POPULARITY
7 episodes with tdma
2 episodes with tdma
3 episodes with tdma
15 episodes with tdma
rWotD Episode 2870: Orthogonal Time Frequency Space Welcome to Random Wiki of the Day, your journey through Wikipedia’s vast and varied content, one random article at a time.The random article for Thursday, 13 March 2025 is Orthogonal Time Frequency Space.Orthogonal Time Frequency Space (OTFS) is a 2D modulation technique that transforms the information carried in the Delay-Doppler coordinate system. The information is transformed in a similar time-frequency domain as utilized by the traditional schemes of modulation such as TDMA, CDMA, and OFDM. It was first used for fixed wireless, and is now a contending waveform for 6G technology due to its robustness in high-speed vehicular scenarios.This recording reflects the Wikipedia text as of 00:16 UTC on Thursday, 13 March 2025.For the full current version of the article, see Orthogonal Time Frequency Space on Wikipedia.This podcast uses content from Wikipedia under the Creative Commons Attribution-ShareAlike License.Visit our archives at wikioftheday.com and subscribe to stay updated on new episodes.Follow us on Mastodon at @wikioftheday@masto.ai.Also check out Curmudgeon's Corner, a current events podcast.Until next time, I'm standard Emma.
Scanner School - Everything you wanted to know about the Scanner Radio Hobby
Digital modes, like P25, NXDN, DMR and others will use FDMA, TDMA, or both allow multiple transmissions to share a single frequency at the same time. FDMA or Frequency Division Multiple Access divides a current carrier frequency into multiple parts, allowing for multiple users to operate on the same time on the same frequency. TDMA or Time Division Multiple Access divides a current transmission over time, allowing for 2 or more users to share a the same frequency at the same time, depending on the digital protocol that is used. The ability for these digital transmissions to place multiple users on the same frequency allows for better management of the limited radio spectrum resource. Not only does this allow for more frequencies to be distributed, but allows for end licenses to do more with a single radio license. Learn the differences between FDMA and TDMA in this week's podcast. ====================================
The best way to train first responders: Hello Smart Firefighting Community! Welcome to another episode of covering real world innovations via interviews with fire service and technology industry experts that empower YOU to develop your very own Smart Firefighting strategy! Thanks for joining our 16 part FRST Challenge Mini Series recorded at the competition! Tracking and situational awareness has long been a problem for first responders. That's why the FRST Challenge competition is designed to pinpoint 3D tracking technologies that provide one-meter accuracy for first responders in indoor environments, crucial for enhancing their safety during rescue operations. The 6 finalist teams competed in localization and ruggedization tests at Muscatatuck Urban Training Center from October 23-27, 2023. Winning teams gain access to funding, business support, and live field testing opportunities to evolve their solutions for real-world application. In this episode: Explore Ravenswood's breakthroughs in Time-Space-Position-Information (TSPI) for ultra-realistic training scenarios Discover how a multi-layer TDMA network can support tens of thousands of live entities for comprehensive simulations Learn about the synergy of open-architecture systems and modular software in enhancing first responder capabilities Hear from Andrew Power - the Production Manager at Ravenswood Solutions. Andrew manages Ravenswood's Production and Training as a Service programs, including proposals, project management, personnel management, regulatory compliance, delivery and sustainment of products. So click play now to hear what he has to share, and stay tuned for the rest of our mini series! Head to www.smartfirefighting.com to discover how SFF accelerates innovation for emergency responders, to find out when our next event is, or review our curated resources! Facebook | Instagram | Twitter | LinkedIn
Our guest this week is Austin Federa. Austin is head of strategy and communications at Solana Foundation, responsible for setting the direction of the Solana Foundation and working with projects and developers building in the Solana ecosystem. Austin discusses Solana's pragmatic engineering culture and the need for developers to focus on building things that are truly only possible on Solana. He also highlights the Foundation's role in supporting infrastructure-level initiatives and turning R&D into stable, standardized solutions. Finally, he stresses the importance for founders to focus on revenue and business models during the bear market and to build outside of the United States. Show Notes:0:55 - Starting with Solana6:42 - Pragmatism at Solana11:15 - Labs vs. Foundation17:36 - Exciting new things at Solana21:52 - Things Austin is personally excited about 26:19 - Contributing to Solana31:47 - Who is a builder you admire in the Solana ecosystem? Full Transcript:Brian Friel (00:00):Hey everyone, and welcome to the Zeitgeist, the show. We highlight the founders, developers, and designers who are pushing the Web3 space forward. I'm Brian Friel, developer relations at Phantom, and I'm super excited to introduce our guest, Austin Federa, the head of strategy and communications at the Solana Foundation. Austin, welcome to the show. Austin Federa (00:25):Hey, thanks for having me. Brian Friel (00:26):I'm super excited to talk to you today. As I was saying just before recording, I think this is the first time I'm recording someone who's actually a podcast pro, so I have a lot to learn from you. Thank you for making time. Austin, before we get into everything about Solana today, I'd love to just learn a little bit about you, how you got started at Solana. And I remember when I first joined Solana, you were the head of communications, and I think at the time there wasn't a clear split between labs and foundation. Since then, a lot has changed and maybe you could go in a little bit of that of how your role has evolved as well. Austin Federa (00:56):Yeah, definitely. So I originally joined in January of '21 out of Bison Trails. So Bison Trails was getting acquired by Coinbase to become Coinbase Cloud. I'd worked there for a little over a year running a bunch of the product marketing there and those sorts of things. And just with the transition over to Coinbase, it was like, oh, you don't want to go work for Coinbase, do you? And I was like, no, probably not. And so it was one of those things where it was somewhere in between one of the people who didn't make the cut and one of the people who they were like, you're just not going to be successful here. And I was like, that's a fairly accurate read. I got tons of great friends who are still working at Coinbase, but for me it just wasn't really the right spot. So I was talking to a bunch of L1s and L2s about coming over. (01:41):And so, one of the big things we'd done at Bison Trails is we had built out almost all of the world's Eth2 staking infrastructure. And I mean almost all the world's Bison Trails infrastructure ran solidly over 50% of the Eth2 network when the Beacon Chain launched, and still at that point in January of '21. Now this didn't matter from a decentralization standpoint because the Beacon Chain wasn't actually a thing. It was just a place you could stake. There wasn't actually user transactions or anything of value on it besides some Eth. But I was pretty heavily in the EVM world at that point. And so I was going around and talking to a bunch of different protocols. I was talking to a bunch of L2s and scaling solutions and these sorts of things, and I was talking to Polkadot as well and some of those type of other L1s. (02:25):And a friend of mine who I worked with back at Republic years ago, Ben Sparango was like, "Hey, what are you up to?" And I was like, "Ah, I'm kind of between stuff right now. I'm interviewing a bunch of places. I don't really feel super passionate about it. I was like, maybe I should leave crypto. I kind of like this industry a lot, but I don't know. We'll see." And he is like, "You should talk to Raj and Toly." I was like, "Of Solana?" He goes, "Yeah, yeah, I joined Solana a few months ago. It's great. You should come talk to us." And I was like, "I don't know, man. I worked with 20 different protocols when I was at Bison Trails and none of them were Solana. Solana was the weird thing that was hard to run and no one understood how to build software for it, but we supported it at Bison Trails because there was people who were trying to run infrastructure for it. (03:04):And he is like, "No, just come and talk to them." And we just finished up this big project with Masari, which was the state of Eth2 was basically the report that we just helped them write and put out. And I had a lot of questions and I thought the questions were just things that I was getting wrong. I thought it was me who was not understanding the model under which Eth2 was going to work. This is back at the time when you're going to have Parallax, execution shards on the network and all this sorts of thing. And I was like, I don't understand how DeFi is going to work here. The minute you break what now we call the global state, but the minute you start moving data into segregated places, that means the data has to be moved before it can interact. (03:45):And if there's one thing we all know about computer science, it's that copying is expensive and takes a lot of time. And so I got on the call with Anatoly, and I was just talking about Eth2 stuff and asking him some questions about what he thought about this stuff. And he's like, "Oh yeah, there's no composability in charting." And I was like, "You're the first person who's told me this. Tell me more." 'Cause I've been talking to a bunch of people who were talking about like, oh, well, it's just harder and it's like... He runs me through the whole thing about like Solana's, a single global state machine, really fast blockchain, what all these advantages were here. And all this stuff, for me, I was like, oh, this makes perfect sense. All of the things that I have been thinking and feeling about the undefined world of what the new state... Now I would sort of call it the cosmofication of Ethereum, what that process was like. (04:32):I wasn't an idiot and I wasn't just not smart enough to understand what folks were talking about. Folks just were talking ahead of the problems they'd solved. And this is not to say that we're never going to have composability uncharted ecosystems, but it took video game designers almost a decade to figure out how to program for multi-core processors. And that took a long time to figure. Out for me, this sort of decision to come and join the Solana Labs at that point was really practical. It was like, I don't know if this weird wacky idea is going to work, but I know I'm going to learn a hell of a lot here from these folks who are doing something very different than the rest of the industry. And the very different than the rest of the industry is usually where the cool stuff's happening. Brian Friel (05:15):I think that is the most perfect intro for this because it hits on so many themes. I want to dive in with you. Austin Federa (05:21):Great. Brian Friel (05:21):One theme that you kind of hit on right there, and this is before we even get into what you currently do as your role and everything, which we should definitely hit on, but I think that resonates pretty well with what Phantom saw originally. Because Phantom also coming from EVM background and the founders were all Zero X folks, seeing that, hey, there is this thing, it's maybe the redheaded stepchild of crypto right now, but these people who are marching into their own beat. This is like 2021, very early 2020 at this point. But basically what I would say it was a very non-consensus bet to do things differently and built out its own genuine kernel of developer ecosystem, which has just evolved into all this craziness today we can talk about. (06:00):But I think one of the key principles of that that I've noticed in my time in Solana is just the level of pragmatism and the reality of, Hey, these are problems today. We have users today, and how do we ship and iterate on these things and not talk about a problem that might be 10 years from now, which may or may not be solved, but actually addresses the problem today. And I think there's a lot that is going on in Solana about this across just all sorts of stuff. We should dive into all of that. Austin Federa (06:27):Oh yeah. Brian Friel (06:28):But I love that framing, and I'm curious, is that level of pragmatism... Who do you think that's set by? I feel like that's almost something an Anatoly thing, but is that an explicit choice that Solana Foundation or Solana Labs is choosing to bring into the ecosystem? Austin Federa (06:42):So one of the things I think is really important when you're looking at any software system is to look at philosophies that the people building it have. And a lot of the places you see that philosophy is in their background. And so if you look at Anatoly and Stephen Akridge and a bunch of the other early founders of the Solana project, their expertise was all in embedded systems. A bunch of these folks came from Qualcomm or very similar companies to Qualcomm, and they were trying to figure out how you could cram the best user experience possible on a flip phone or a proto smartphone onto a chip. And they had to do all these crazy low level optimizations to get this stuff to work. And Solana's not super, super low level, but one of the major things there was saying, we're going to combine the consensus layer with the virtual machine. (07:38):And that's not for some elegant principle of software architecture. That's because it's faster and yes, it's harder. And yes, there's a lot of other problems that come with that, but at the end of the day, the pragmatism comes from the background of folks who actually had to ship chips that companies were going to build software on that would interact in the real world and be the basis of all of this mobile revolution. And so there's other approaches that are very sort of come from the academic computing world where it's as long as we can define the perfect software system, in theory, the problem is just finding the execution place to do it on. And there are some chains that have been more successful than others with that. But I think at the end of the day, the thing Solana has going for it is this sort of ruthless pragmatism. It's a desire to build software in a way that doesn't let perfect [inaudible 00:08:33] of the good, but also keeps its values front and center. (08:36):And one of those major values is if you know you have to do the hard thing, do the hard thing first. And that is the thing I will routinely tell people internally is the only way you eat an elephant is one bite at a time. And that is kind of the way we go through all of this stuff. It's so easy to talk yourself into waterfall releases. It's so easy to talk yourself into, well, when this thing comes out, then this and this and this, and this can all come out and then we'll have this end state of this. And it's like you're making assumptions about what the blockchain industry's going to look like 18 months from now. I don't think any human is ever successfully predicted what the blockchain industry would look like six months from now, let alone three times that. So there's all this stuff about not working with entrenched assumptions, picking software architecture systems that feel like they're persistent. I would say that the software philosophy that Solana core engineering builds on is closer to brand philosophy than it is like technical philosophy. It's very interesting. Brian Friel (09:36):Yeah, I couldn't agree more. I mean, being [inaudible 00:09:39], I think we have a front seat to that too, as the ecosystem changes as the leadership basically, like you said, just takes the hard challenge first and says, this is something that we have to face. Let's tackle it now. Here's an open proposal, here's how we can do it. I'm looking back at what Solana was even just a year ago, one of the dev advocates on our team on it put out this tweet that said, "Things we didn't have a year ago on Solana Wallet's standard." Austin Federa (10:02):Oh, I love it. Brian Friel (10:03):Which is like looking at the state of other blockchains trying to be an ejected wallet there, it's a mess. Solana takes that hand on, makes a chain agnostic wallet standard for that version transactions, which like high level, massively refactoring how transactions can be done such that you can just access way more accounts on Solana DeFi doing multi hops exchange. Jupiter, the perfect example of that. Priority fees on the network, I mean elegant state level hotspot fee markets that don't impact the rest. Anyone else on Solana. Programmable NFTs, state compression, quick, stake weighted QoS. (10:37):I mean, not to mention Saga, new token programs. There's just so much going on right now. From where you sit, and maybe this can get into a little bit of the labs versus foundation discussion that we want to get into too, is how do all these ideas come to life mean? Some of these are community driven, like Metaplex having their own programmable NFTs. But a lot of these also are Solana engineers who are just on the front lines with their own proposals. Jordan Sexton has an idea he's doing it. How much of that is top down driven? How much of that is bottom up? And how much of this is a labs versus foundation? How do you see all this kind of how it plays out? Austin Federa (11:16):So before we even get to that, one of, I think the most interesting examples of pragmatism is how little work wallets have to do on Solana. This is super different. On Ethereum, the wallet has to build the transaction, that is a part of the thing. And on Solana, the DAPs have to build the transactions. Because the DAPs know more about what they're building than the wallet does. So why would the wallet build a transaction? The wallet's role is to verify that the transaction is what the DAP says it is, right? But it's those little tiny things where it's like how do we make it easier for people to build something like Phantom in six months as opposed to nine months? (11:55):And that's kind of one component that falls into that. But you were saying these sort of ideas about where do these things come from. A lot of it comes from best practices in other ecosystems about things people are talking about. I think one of the things that Ethereum is far ahead of Solana on is formal verification. And formal verification is not something that we came up with or claimed to have come up with. (12:20):It's like, oh, this is a really strong thing in another ecosystem that we should take and bring into this. Proof of history is just time division multiple access. It's TDMA, it's literally what 2G cell phone technology run on. But you've applied that to a blockchain with a leader schedule now and suddenly you have an incredibly fast blockchain. I think one of the best things to think about is Solana is full of out-of-the-box solutions to very conventional problems. And those out-of-the-box solutions will often come from engineers who are working on this stuff. They'll often come from engineers who are not working on this stuff. The number of suggestions that have come from someone's like, oh, I'm trying to build this thing, and someone like over lunch or over a Zoom on something else is like, what if you just do it this way instead? And they're like, okay. (13:08):And then they go down that... It's sort of this idea that there's not an intellectual purity test. You don't have to subscribe to a philosophy of how something should be built in order to have an idea here. P NFTs came entirely from community demand for them. That was a direct response to sort of a problem. The wallet standard is again, it's like it's really annoying that developers have to integrate calls for every wallet into their DAP. Wouldn't it be so much easier if there could just be one thing they could call and all the wallets in your Chrome Exchange could be like, hello, here I am. And that was an incredible easy turnkey thing that didn't require creating a whole separate product, a whole separate company to just connect wallets or adapt wallets if we should say it that way. And that's where these kind of things come from. (13:58):Now sometimes this leads to suboptimal user experiences too. I would say that we have three excellent explorers on Solana for what you want to do with that explorer. And you don't go to Solscan for the same things you go to Solana FM for and you don't go to the explorer.solana.com for the same things you go to those other ones for. And so there is sometimes this sort of fracturing that occurs because everyone has great ideas and they feel very comfortable building them before we've had a committee meeting or faculty meeting or something to decide what the right path forward is. As much as possible, the goal is to move fast and see what's adopted and the stuff that's adopted then gets tons of resources thrown behind it from the community. Brian Friel (14:48):Yeah, I do think that's incredibly refreshing though for crypto. I mean, especially an industry that's still... I think as a whole macro level iterating a lot. The meta is constantly changing. Some pattern that I've noticed is with P NFTs is a lot of times Solana will hit a new meta or figure out a new problem well before other ecosystems because of this rapid iteration and experimentation. And it's almost like, hey, Solana's figured it out. Let's take the learnings from there and tell everyone else and get up to speed on that. Austin Federa (15:16):Oh yeah. And tell everyone else we thought of it ourselves. That's also the other thing. And we see this all the time, not in a way that people are like, but all of the tricks that Monad is doing to try and speed up EVM, they're all the things that Solana did. Except they're trying to do it with an underlying architecture that it's a lot harder on because transactions on Solana have to specify their accounts, their instructions, their memory, their compute, before they get accepted and executed. So the work of transaction simulation on Solana is a lot more about just reading what the data says and being like, yes, these things say what they actually say they say, and then you can simulate balance changes and all that sort of stuff. But that is a very different problem than trying to stochastically model what an EVM transaction is going to do. (16:05):And if you're trying to do out of order processing of EVM transactions, I'm not going to say it can't work because a lot of people thought Token Ring was the only protocol that could possibly make the internet work. And the idea of just throwing packets randomly at a router and being good luck, well, that sounded insane, and that is exactly how the internet works. You just randomly throw packets at routers and most of them get there somehow. It's pretty astonishing. Like packet collision's super rare nowadays, even though everyone's just screaming at the top of their lungs constantly for bandwidth, and that's wild. (16:37):So who knows if the stuff will actually work on that side. But the cool thing I think that's going on in Solana is this lack of ideological purity around how something has to be done, and it's more of a purity around what the outcome has to be. There's so many analogies here, but the United States, we talk about equality of opportunity all the time, and that is actually a much harder thing to do than equality of outcome. And so I think with Solana, it's like if you focus on the outcome that you want and not the process by which you get there, you will find a better way to get there. Brian Friel (17:12):I love that. So from where you sit on the foundation side now head of strategy at Foundation, you mentioned that there's all these engineers, some at Solana, some not at Solana, who basically have these problems. They come up with pragmatic solutions. What's the role of the Solana Foundation on all of this? And is there any big bets in particular that you're excited about or you guys are making for this year on Solana? Austin Federa (17:36):Yeah, So the Foundation is a Swiss nonprofit foundation that exists to further the adoption and advancement of the Solana blockchain. And so this is the entity that gives grants. This is the entity that if you've ever sort of interacted with a granting apparatus, breakpoint, hacker houses, developer boot camps, those are all run out of the Solana Foundation. That's its role for being in the world. And so the initiatives that we are working on are really infrastructure level. They always have been, and I think they will continue to be throughout this year. So a great example of this are fee markets, like you mentioned, right? Local fee markets. That was technically shipped in September, but I would argue it practically wasn't shipped until December. And that was because there wasn't a method at that point for an RPC, for a wallet, a DAP, anything to hit up an RPC and say, how much do you think I should prioritize a fee if I really want to make sure this transaction gets through? (18:34):And without the ability to guesstimate, you don't have anything, right? That is not a functional, usable, shipped thing without developers actually being able to implement it. And that's kind of the difference I would describe between the work that gets done through let's just say Solana Labs and core engineering there and the work the Foundation's supporting. A lot of the work that core engineering does and a bunch of, obviously not all, there's core engineers all over the place, but a number of the core engineers are on Solana Labs' payroll. And those individuals, they're focused on the core engineering, right? (19:09):They're like, we shipped fee markets. We're good. At the Foundation, we're like, wait a minute, wait a minute. There's so much work to actually be done to turn this into a standard that every DAP and wallet can use without spending days writing custom code. And so I would say that's kind of the place that the Foundation comes in is it's not directing what work gets done, but it's sort of the process of taking stuff that feels like it's either R&D or it's super hot production engineering. And turning it into something that's more stable, that's more standardized, that's more universally understood, and doing that in a way that there's feedback collected from many people in the ecosystem, in addition to the whole granting apparatus. Brian Friel (19:47):So the developer relations team sits at the foundation level no longer at the labs level? Austin Federa (19:52):Yes, very much. You were saying earlier like, oh, these things maybe weren't as separate before they actually were just as separate. They were just very few people worked for Foundation. So because most of the work at that point was just sort of kick out as much as you can get out the door. There were folks at Foundation giving grants and stuff like that, but a lot of that sort of work that we do today, it wasn't necessary to do it yet because the thing didn't exist yet, at that stage. When I joined, there were 36 programs on the network that had daily transactions through them. Brian Friel (20:25):Wow. Austin Federa (20:26):Absolutely nothing. And now we're over like 1200 easily. And I just think that's such an interesting change to see over such a quick period of time. Brian Friel (20:35):Oh, for sure. It stood out to me too, that... I think I mentioned the earlier conversation too. It's like this kernel of genuine developer interest that basically no other blockchain ecosystem I think has outside of Ethereum where it's people who are very much specialized, Solana centric as Chase loves to say too in Glass, but really just thinking about what's only possible in Solana? How can I iterate on this and expand on this? That's super invigorating to be a part of, and that's my favorite part of the ecosystem, essentially. Yeah, Austin Federa (21:04):We love it. Brian Friel (21:05):On that note, there is this meme now, is recording this in April 2023 of only possible on Solana and these things that everything we talked about, this pragmatic engineering culture of basically what's the outcome, what's the end user experience that we really want, and finding ways to ship that. There's a lot going on right now. I mean, I think Saga is an awesome example of this. It's like, how could we take a phone that just is the most kick ass crypto experience you could possibly have on mobile, but there's all sorts of stuff. There's compressed NFTs and state compression, what that means, DPIN is this new thing. There's all existing, DeFi, just normal FTs payments infrastructure. What are you personally most excited about and are any key themes in the year ahead that you think people should look into now that really highlights the strengths of Solana? Austin Federa (21:52):So the decentralized physical infrastructure layer is a really interesting story for me personally. And I think there's so much that goes on with that that goes into that, whatever kind of language you want to use to describe that. I am just super excited about what that looks like. And for me personally, the stuff I'm most excited about on Solana is you really don't have a choice to build it anywhere else that you need a fast composable ecosystem that has the capacity to go up to tens of thousands of transactions per second for a base fee of $.000025 and that's rare. You really can't find that in a lot of other places or a lot of other applications. And so for me, that's like some of the coolest stuff on Solana. Now, in terms of what's coming this year, I think we're going to see Fire Dancer rolling out on testnet probably in Q4. (22:40):That's going to be really interesting to see how that performs when it's intermingled with the other clients on the network. So that's going to be very interesting. There's a ton of work being done to make custom contracts easier to deploy on Solana. This is a project called Interfaces. This is out of necessity. The Token 22, which is code name, it definitely won't be called that once it's released. Token 22 is this new token program coming to the network. And it brings all sorts of things like interest baresing tokens. You can charge fees to use contracts directly in the contract. (23:11):There's a lot of really interesting stuff that comes to it, but it adds a second token program to the network. And that second token program means you need to suddenly have a way that a wallet can instantly say, Hey, which program should I look at for this arbitrary piece of data on chain? And because of that, it means if you've built support for two, you can build support for 20,000. So there's little pieces like that that are coming, but I really think this is going to be another infrastructure year, but instead of it being base level infrastructure, it's going to be something closer to developer tooling. I'm not sure I would call Interface is developer tooling, but it's definitely usability tooling. That means it's easier to develop novel things for the Solana ecosystem. Brian Friel (23:55):Yeah, I see that as well. The conversation shift towards interfaces is really exciting too, because Solana's account model and program model has some implicit instruction in that where, okay, this is the canonical token program. Austin Federa (24:08):It's perfect. What are you talking about? Brian Friel (24:09):Yeah, it's perfect. What are you talking about? And I think that just leans even more into those pragmatic values kind of shipping. And that's like, Hey, if we do have these interfaces where all of a sudden any wallet can take any of these token programs, any NFT exchange you can list on, you can list your NFTs through them. Opening up that design space, a deeper infrastructure level, I think would be really exciting. Austin Federa (24:31):Yeah. This will support everything from if you are a... No offense, but if you're a super corporate NFT project and you want to make sure that you have certain protections or certain things or whatever, you might want to deploy your own version of an NFT contract. And right now it's really hard to do that. It's not hard to deploy the contract, it's hard to get the ecosystem on board with the contract you've deployed. Brian Friel (24:55):You have to knock on every door to get a custom integration. Austin Federa (24:59):And we're seeing this with compression, right? Compression is awesome. It's been picked up by a ton of wallets. There's not an NFT marketplace that supports it yet. Brian Friel (25:08):Not yet, but I have heard soon. So maybe, and by the time that this podcast is released. Austin Federa (25:13):Who's adding it? Brian Friel (25:14):I have heard Tensor. Austin Federa (25:15):Interesting. Brian Friel (25:16):As an alpha drop. Austin Federa (25:17):They've been making moves. Brian Friel (25:18):They're making moves, but I would not be surprised if Magic Eden and others would be following suit at some point. But if we can open up an interface, some sort of interface standard where we can get buy-in, do the hard work up front to get all these different companies to buy into some sort of interface together, it's going to unlock a lot of really cool potential on Solana. Austin Federa (25:38):Absolutely. Brian Friel (25:39):One other thing I want to ask too is, you mentioned a few things kind of implicitly there. One of my questions was going to be like there's all these exciting things happening where we should we be investing now to unlock all this. But I guess there's also... I've noticed on Solana, and particularly Solana Twitter, there's this part of what this pragmatic culture has attracted is a culture of doers and people who show up and they want to contribute and they want to lend their time. And a lot of developers who maybe not even be working in the Solana ecosystem who are just excited and passionate about it. If you could speak to those people, where do you think they should be focusing their time and energy? What is Solana most in need from external contributors at this time? Austin Federa (26:19):It's a really good question. I mean, the problem there is I don't think the advice that I would give external contributors is good advice for their project at this point. It's great advice for Solana. The advice for Solana, I'd say is keep building strong open source tooling and foundations so we can make it easier for new developers to get involved. Anything you build that fits into the Lego thesis super strong, please keep doing it. What I would actually give as advice for founders in this space right now is that we're probably in a bear for at least another 12 months, and it's going to be a climb out of this thing. And you should be spending time thinking about revenue. You should be spending time thinking about business models. Not a lot, not enough to go raise a massive series beyond, but enough that you're extending your runway by a few months that if you have to raise a bridge round, you can show, hey, actually we do have revenue. (27:23):Here's our revenue numbers. Give us a little bit of money. Because I think this is a really hard time in the capital markets. It's really easy to be like the bear is a great time for building. That's true. The bear is a great time for building. It's a terrible time for payroll though. And that's kind of something they just remember as you kind of go through the process. Now, what does Solana need? I mean, I'm going to tell you my vision of how Solana could not win. And the way Solana doesn't win is if these incremental small scaling solutions for EVM, that 400 transactions per second, you can do an EVM right now if you really try. Maybe we just don't come up with transaction heavy use cases that anyone truly wants for a while. And that's a situation where all this horsepower that's been brought to bear on something like Solana isn't actually needed for what things people want to build on blockchains. (28:20):Now, I don't think that's true, but that's the thing to think about. What Solana needs is for people to embrace only possible on Solana and to build more things that are truly only possible to be built on Solana. Because as much as I love NFT projects, very few of them are only possible on Solana. This is the great thing about XNFTs. Those are truly only possible in Solana right now. But let's see teams going out there and saying, okay, a 10,000 drop is cool. What if we do a million, 10 million, a hundred million? Yeah, they're going to be cheaper. Yeah, the dynamics are going to change. Something's going to change, right? But this is the thing that I think is so interesting about this space is everyone has internalized this financialization, Bitcoinification view of all crypto. Like, Bitcoin's value is scarcity, period, end of day. (29:20):That's great. Props to Bitcoin, nothing since Bitcoin is Bitcoin. Like Magic The Gathering is not worth less money every time they print a new trading card pack. The Pokemon company is not worth less money every time they sell a new Pikachu plush. There are models here that people just seem emotionally afraid to try. I think Clano is getting pretty close to this and they're doing some very cool stuff with how they're doing some collection expanding. On the NFT side though, I think people need to get away from the idea that their value proposition is scarcity and figure out ways to do like LVMH and Louis Vuitton have done where they have something that is still high end, that is still hard to get but is not fixed cap. And sort of see where that maybe heads from there. On the DeFi side, start building outside of the United States, translate your projects, websites into Vietnamese and Turkish. (30:18):Don't think your growth is going to come from the United States in the next year or two because the regulations here are really uncertain right now. And it's a bit of a tricky time for folks to be in the United States. But I went to Turkey and I went to Vietnam, and folks are using crypto, and they're using crypto because in Turkey it's significantly more stable than their actual native currency. And that's a crazy thing to be thinking about, but that's true. So let's embrace that. Let's actually think of this stuff and make sure that the work that's being done truly actually supports this kind of stuff. And I think that's kind of one of the most important things to think about from the perspective of a founder at this point. Brian Friel (30:57):Yeah, I think there's been a key theme here throughout this whole conversation of basically going back to first principles and thinking, what's the outcomes that we want? Originally, I think Solana's tagline, even blockchain at Nasdaq speed, we were promised flying cars. We got Twitter, we got the greatest JPEG trading engine in the world on Solana, but how can we continue to iterate on this and what are things we can only do on Solana? All those examples you brought up I think are awesome examples. I really appreciate that you guys are continuing to challenge the ecosystem and to push and to not be afraid to try new things, and that's where the unlocks happen. Austin Federa (31:30):Yeah, of course. I think that's incredibly important and powerful here. Brian Friel (31:34):Well, Austin, this has been an awesome conversation. Thank you so much. One closing question we ask all our guests. Keeping line with the last question of the things you're excited about is who is a builder that you admire in the Solana ecosystem? Austin Federa (31:48):I mean, there's so many, it's hard to pick one. There's the easy answers of Armani and those folks and Mango Max. And I think the truth is that the folks who are doing some of the most interesting work are the ones who are bug fixing, who are going in and saying, ah, I ran into this problem with this tool set that I've seen someone else build. Let me go spend a little time trying to fix this thing up. And I don't have anyone particular to name in that, but it's very easy to be like, holy shit, Armani and X NFTs. Wow. And it's like, that is incredibly important. You know what else is really important? The dude that went in and made RPCs 20% more efficient for certain types of calls. And I think those are equally important things, and I wish we did a little bit more celebrating of the maintenance work in addition to all of our celebrating of the true innovations only possible on Solana. Brian Friel (32:40):Mert is going to love that, that you said their call that out, so. Austin Federa (32:44):There we go. Brian Friel (32:44):Maybe we can put Mert, Triton, all those folks, everyone, all the infrastructure that does the unsexy blocking and tackling that maybe really is the true glass eating on Solana, all of those guys. Austin Federa (32:56):Totally. I mean, there's a bunch of devs that work in Mango that are actually part of core engineering now, and they just fix a bunch of stuff because they're just like, we were trying to build our next version of Mango and we kept running into these problems, so we just started fixing stuff. Brian Friel (33:10):No one knows it better than them. Yeah. Austin Federa (33:12):Exactly. So it's good. Brian Friel (33:13):That's amazing. Well, Austin, I'm really excited for the next year Solana, thank you so much for coming on the podcast. Austin Federa (33:20):Definitely. Thank you. This is fun.
Today we speak to Professor Jan-Willem Alffenaar from Westmead Hospital and the University of Sydney about Therapeutic Drug Monitoring in Tuberculosis. Professor Alffenaar reviews the PK/PD issues with common TB medications, the strengths and weaknesses of TDM and how best to utilise TDM in the treatment of TB patients. REFERENCES1) personalised dosing of TB drugsClinical standards for the dosing and management of TB drugsAlffenaar JW, Stocker SL, Forsman LD, Garcia-Prats A, Heysell SK, Aarnoutse RE, Akkerman OW, Aleksa A, van Altena R, de Onata WA, Bhavani PK. Clinical standards for the dosing and management of TB drugs. The International Journal of Tuberculosis and Lung Disease. 2022 Jun 1;26(6):483-99.Population Pharmacokinetics and Bayesian Dose Adjustment to Advance TDM of Anti-TB Drugs.Sturkenboom MG, Märtson AG, Svensson EM, Sloan DJ, Dooley KE, van den Elsen SH, Denti P, Peloquin CA, Aarnoutse RE, Alffenaar JW. Population pharmacokinetics and Bayesian dose adjustment to advance TDM of anti-TB drugs. Clinical pharmacokinetics. 2021 Jun;60:685-710.2) drug exposure - pathogen susceptibility - treatment outcomeDrug exposure and susceptibility of second-line drugs correlate with treatment response in patients with multidrug-resistant tuberculosis: a multicentre prospective cohort study in China.Zheng X, Forsman LD, Bao Z, Xie Y, Ning Z, Schön T, Bruchfeld J, Xu B, Alffenaar JW, Hu Y. Drug exposure and susceptibility of second-line drugs correlate with treatment response in patients with multidrug-resistant tuberculosis: a multicentre prospective cohort study in China. European Respiratory Journal. 2022 Mar 1;59(3).Drug Exposure and Minimum Inhibitory Concentration Predict Pulmonary Tuberculosis Treatment Response.Zheng X, Bao Z, Forsman LD, Hu Y, Ren W, Gao Y, Li X, Hoffner S, Bruchfeld J, Alffenaar JW. Drug exposure and minimum inhibitory concentration predict pulmonary tuberculosis treatment response. Clinical Infectious Diseases. 2021 Nov 1;73(9):e3520-8.3) TDM frameworkTherapeutic Drug Monitoring of Anti-infective Drugs: Implementation Strategies for 3 Different Scenarios.Kim HY, Byashalira KC, Heysell SK, Märtson AG, Mpagama SG, Rao P, Sturkenboom MG, Alffenaar JW. Therapeutic drug monitoring of anti-infective drugs: implementation strategies for 3 different scenarios. Therapeutic Drug Monitoring. 2022 Feb 1;44(1):3-10.4) point of care TDMA mobile microvolume UV/visible light spectrophotometer for the measurement of levofloxacin in saliva.Alffenaar JW, Jongedijk EM, van Winkel CA, Sariko M, Heysell SK, Mpagama S, Touw DJ. A mobile microvolume UV/visible light spectrophotometer for the measurement of levofloxacin in saliva. Journal of Antimicrobial Chemotherapy. 2021 Feb;76(2):423-9.Levofloxacin pharmacokinetics in saliva as measured by a mobile microvolume UV spectrophotometer among people treated for rifampicin-resistant TB in Tanzania.Mohamed S, Mvungi HC, Sariko M, Rao P, Mbelele P, Jongedijk EM, van Winkel CA, Touw DJ, Stroup S, Alffenaar JW, Mpagama S. Levofloxacin pharmacokinetics in saliva as measured by a mobile microvolume UV spectrophotometer among people treated for rifampicin-resistant TB in Tanzania. Journal of Antimicrobial Chemotherapy. 2021 Jun;76(6):1547-52.
Scanner School - Everything you wanted to know about the Scanner Radio Hobby
Garrett Farwell returns to the podcast today to talk about scanning in California, where he lives. He will break down the systems that he monitors, including a couple of counties like San Francisco, San Mateo, and Alameda counties in California and what he has learned about each County's trunk system using a scanner. What You Need To Know Garrett will talk about three simulcast systems in the San Francisco Bay Area that he has been scannin. The San Francisco city and county system went through a sizable transition last year. This system recently changed from an analog simulcast system but has changed to a P25 system in recent years. On this sytem, the 800 megahertz simulcast site is where all of the voice traffic is available, like police, fire, emergency services. The 700 megahertz simulcast site for the San Francisco TRS seems to be mostly for data packets and information. This does not align with the notes for this trunk system in the Radio Reference Database that states that all TDMA talk groups (P-II) are on the 800-megahertz system, and then all the FDMA talk groups (P-I) are on the 700 Garrett explained how did he conclude that there is not much on the 700 layers by listening to this system and keeping a close ear and eye on the traffic he is monitoring. Another interesting tidbit about the San Francisco TRS is there is a difference between the mobiles and the portables from an encryption perspective. Garrett optimizes his scan lists by avoiding all the full encryption stuff because there is no point in monitoring that. Garrett tends to listen to law enforcement primarily in San Mateo County as well as some of the local law enforcement in the County. The way Mateo County works geographically is we have a mountain range that splits it almost in half, and on the east side of the County, there are a lot of little valleys and areas where I'm sure transmission and reception are difficult. Garrett has concluded that didn't need to scan all the different simulcast systems to hear what he needed. This has helped him to further optimize his scan lists. In Mateo County, the fire response and fire resources are not on the simulcast system. The East Bay regional communication system is primarily located within the East Bay and the San Francisco Bay region. It covers Contra Costa County, Alameda County, and some small parts of Solano County. Garret has been trying to understand how the fire dispatch talk groups are geographically dispatched. So far, Garret has only been primarily using a scanner to monitor and outline each trunk system he monitors. Eventually, Garret would like to start logging the systems with computer software to see more information about how each system is used. ====================================
Même les meilleurs voyages ont une fin... Eh oui, c'est le dernier TDMA de la saison ! Pour cette tournée d'adieu, on vous a préparé votre journal favori, qui ira du musée de la rumba congolaise aux côtes libanaises, endeuillées par un terrible naufrage. Vous retrouverez aussi vos chroniques : Capucine vous parlera de ces algues qui pourraient bientôt débarquer dans vos assiettes dans Vert l'Avenir, Inès vous résume tout ce qu'il faut savoir sur le rachat de Twitter par Elon Musk pour Eclairez-nous, et Thumette vous racontera l'histoire de Bobby Sands, figure de la révolution irlandaise. Et pour cette dernière émission de l'année, nous avons une invitée : Angelica Müller, professeur d'histoire contemporaine à Rio de Janeiro, avec qui on a discuté des enjeux de l'élection présidentielle brésilienne du 2 octobre prochain. Merci encore d'avoir été aussi nombreux et fidèles pour découvrir les actualités méconnues du monde entier. On se retrouve l'année prochaine, et d'ici là, n'oubliez pas : restez curieux !
Qualcomm is the world's largest fabless semiconductor designer. The name Qualcomm is a mashup of Quality and Communications and communications has been a hallmark of the company since its founding. They began in satellite communications and today most every smartphone has a Qualcomm chip. The ubiquity of communications in our devices and everyday lives has allowed them a $182 billion market cap as of the time of this writing. Qualcomm began with far humbler beginnings. They emerged out of a company called Linkabit in 1985. Linkabit was started by Irwin Jacobs, Leonard Kleinrock, and Andrew Viterbi - all three former graduate students at MIT. Viterbi moved to California to take a job with JPL in Pasadena, where he worked on satellites. He then went off to UCLA where he developed what we now call the Viterti algorithm, for encoding and decoding digital communications. Jacobs worked on a book called Principles of Communication Engineering after getting his doctorate at MIT. Jacobs then took a year of leave to work at JPL after he met Viterbi in the early 1960s and the two hit it off. By 1966, Jacobs was a professor at the University of California, San Diego. Kleinrock was at UCLA by then and the three realized they had too many consulting efforts between them, but if they consolidated the request they could pool their resources. Eventually Jacobs and Viterbi left and Kleinrock got busy working on the first ARPANET node when it was installed at UCLA. Jerry Heller, Andrew Cohen, Klein Gilhousen, and James Dunn eventually moved into the area to work at Linkabit and by the 1970s Jacobs was back to help design telecommunications for satellites. They'd been working to refine the theories from Claude Shannon's time at MIT and Bell Labs and were some of the top names in the industry on the work. And the space race needed a lot of this type of work. They did their work on Scientific Data Systems computers in an era before that company was acquired by Xerox. Much as Claude Shannon got started thinking of data loss as it pertains to information theory while trying to send telegraphs over barbed wire, they refined that work thinking about sending images from mars to earth. Others from MIT worked on other space projects as a part of missions. Many of those early employees were Viterbi's PhD students and they were joined by Joseph Odenwalder, who took Viterbi's decoding work and combined it with a previous dissertation out of MIT when he joined Linkabit. That got used in the Voyager space probes and put Linkabit on the map. They were hiring some of the top talent in digital communications and were able to promote not only being able to work with some of the top minds in the industry but also the fact that they were in beautiful San Diego, which appealed to many in the Boston or MIT communities during harsh winters. As solid state electronics got cheaper and the number of transistors more densely packed into those wafers, they were able to exploit the ability to make hardware and software for military applications by packing digital signal processors that had previously taken a Sigma from SDS into smaller and smaller form factors, like the Linkabit Microprocessor, which got Viterbi's algorithm for encoding data into a breadboard and a chip. The work continued with defense contractors and suppliers. They built modulation and demodulation for UHF signals for military communications. That evolved into a Command Post Modem/Processor they sold, or CPM/P for short. They made modems for the military in the 1970s, some of which remained in production until the 1990s. And as they turned their way into the 1980s, they had more than $10 million in revenue. The UC San Diego program grew in those years, and the Linkabit founders had more and more local talent to choose from. Linkabit developed tools to facilitate encoded communications over commercial satellites as well. They partnered with companies like IBM and developed smaller business units they were able to sell off. They also developed a tool they called VideoCipher to encode video, which HBO and others used to do what we later called scrambling on satellite signals. As we rounded the corner into the 1990s, though, they turned their attention to cellular services with TDMA (Time-Division Multiple Access), an early alternative to CDMA. Along the way, Linkabit got acquired by a company called MACOM in 1980 for $25 million. The founders liked that the acquirer was a fellow PhD from MIT and Linkabit stayed separate but grew quickly with the products they were introducing. As with most acquisitions, the culture changed and by 1985 the founders were gone. The VideoCipher and other units were sold off, spun off, or people just left and started new companies. Information theory was decades old at this point, plenty of academic papers had been published, and everyone who understood the industry knew that digital telecommunications was about to explode; a perfect storm for defections. Qualcomm Over the course of the next few years over two dozen companies were born as the alumni left and by 2003, 76 companies were founded by Linkabit alumni, including four who went public. One of the companies that emerged included the Linkabit founders Irwin Jacobs and Andrew Viterbi, Begun in 1985, Qualcomm is also based in San Diego. The founders had put information theory into practice at Linkabit and seen that the managers who were great at finance just weren't inspiring to scientists. Qualcomm began with consulting and research, but this time looked for products to take to market. They merged with a company called Omninet and the two released the OmniTRACS satellite communication system for trucking and logistical companies. They landed Schneider National and a few other large customers and grew to over 600 employees in those first five years. It remained a Qualcomm subsidiary until recently. Even with tens of millions in revenue, they operated at a loss while researching what they knew would be the next big thing. Code-Division Multiple Acces, or CDMA, is a technology that allows for sending information over multiple channels so users can share not just a single frequency of the radio band, but multiple frequencies without a lot of interference. The original research began all the way back in the 1930s when Dmitry Ageyev in the Soviet Union researched the theory of code division of signals at Leningrad Electrotechnical Institute of Communications. That work and was furthered during World War II by German researchers like Karl Küpfmüller and Americans like Claude Shannon, who focused more on the information theory of communication channels. People like Lee Yuk-wing then took the cybernetics work from pioneers like Norbert Weiner and helped connect those with others like Qualcomm's Jacobs, a student of Yuk-wing's when he was a professor at MIT. They were already working on CDMA jamming in the early 1950s at MIT's Lincoln Lab. Another Russian named Leonid Kupriyanovich put the concept of CMDA into practice in the later 1950s so the Soviets could track people using a service they called Altai. That made it perfect for perfect for tracking trucks and within a few years was released in 1965 as a pre-cellular radiotelephone network that got bridged to standard phone lines. The Linkabit and then Qualcomm engineers had worked closely with satellite engineers at JPL then Hughes and other defense then commercial contractors. They'd come in contact with work and built their own intellectual property for decades. Bell was working on mobile, or cellular technologies. Ameritech Mobile Communications, or Advanced Mobile Phone System (AMPS) as they were known at the time, launched the first 1G network in 1983 and Vodaphone launched their first service in the UK in 1984. Qualcomm filed their first patent for CDMA the next year. That patent is one of the most cited documents in all of technology. Qualcomm worked closely with the Federal Communications Commission (FCC) in the US and with industry consortiums, such as the CTIA, or Cellular Telephone Industries Association. Meanwhile Ericsson promoted the TDMA standard as they claimed it was more standard; however, Qualcomm worked on additional patents and got to the point that they licensed their technology to early cell phone providers like Ameritech, who was one of the first to switch from the TDMA standard Ericsson promoted to CDMA. Other carriers switched to CDMA as well, which gave them data to prove their technology worked. The OmniTRACS service helped with revenue, but they needed more. So they filed for an initial public offering in 1991 and raised over $500 billion in funding between then and 1995 when they sold another round of shares. By then, they had done the work to get CDMA encoding on a chip and it was time to go to the mass market. They made double what they raised back in just the first two years, reaching over $800 million in revenue in 1996. Qualcomm and Cell Phones One of the reasons Qualcomm was able to raise so much money in two substantial rounds of public funding is that the test demonstrations were going so well. They deployed CDMA in San Diego, New York, Honk Kong, Los Angeles, and within just a few years had over a dozen carriers running substantial tests. The CTIA supported CDMA as a standard in 1993 and by 1995 they went from tests to commercial networks. The standard grew in adoption from there. South Korea standardized on CDMA between 1993 to 116. The CDMA standard was embraced by Primeco in 1995, who used the 1900 MHz PCS band. This was a joint venture between a number of vendors including two former regional AT&T spin-offs from before the breakup of AT&T and represented interests from Cox Communications, Sprint, and turned out to be a large undertaking. It was also the largest cellular launch with services going live in 19 cities and the first phones were from a joint venture between Qualcomm and Sony. Most of PrimeCo's assets were later merged with AirTouch Cellular and the Bell Atlantic Mobile to form what we now know as Verizon Wireless. Along the way, there were a few barriers to mass proliferation of the Qualcomm CDMA standards. One is that they made phones. The Qualcomm Q cost them a lot to manufacture and it was a market with a lot of competition who had cheaper manufacturing ecosystems. So Qualcomm sold the manufacturing business to Kyocera, who continued to license Qualcomm chips. Now they could shift all of their focus on encoding bits of data to be carried over multiple radio channels to do their part in paving the way for 2G and 3G networks with the chips that went into most phones of the era. Qualcomm couldn't have built out a mass manufacturing ecosystem to supply the world with every phone needed in the 2G and 3G era. Nor could they make the chips that went in those phones. The mid and late 1990s saw them outsource then just license their patents and know-how to other companies. A quarter of a billion 3G subscribers across over a hundred carriers in dozens of countries. They got in front of what came after CDMA and worked on multiple other standards, including OFDMA, or Orthogonal frequency-Division Multiple Access. For those they developed the Qualcomm Flarion Flash-OFDM and 3GPP 5G NR, or New Radio. And of course a boatload of other innovative technologies and chips. Thus paving the way to have made Qualcomm instrumental in 5G and beyond. This was really made possible by this hyper-specialization. Many of the same people who developed the encoding technology for the Voyager satellite decades prior helped pave the way for the mobile revolution. They ventured into manufacturing but as with many of the designers of technology and chips, chose to license the technology in massive cross-licensing deals. These deals are so big Apple sued Qualcomm recently for a billion in missed rebates. But there were changes happening in the technology industry that would shake up those licensing deals. Broadcom was growing into a behemoth. Many of their designs sent from stand-alone chips to being a small part of a SoC, or system on a chip. Suddenly, cross-licensing the ARM gave Qualcomm the ability to make full SoCs. Snapdragon has been the moniker of the current line of SoCs since 2007. Qualcomm has an ARM Architectural License and uses the ARM instruction set to create their own CPUs. The most recent incarnation is known as Krait. They also create their own Graphics Processor (GPU) and Digital Signal Processors (DSPs) known as Adreno and Hexagon. They recently acquired Arteris' technology and engineering group, and they used Arteris' Network on Chip (NoC) technology. Snapdragon chips can be found in the Samsung Galaxy, Vivo, Asus, and Xiaomi phones. Apple designs their own chips that are based on the ARM architecture, so in some ways compete with the Snapdragon, but still use Qualcomm modems like every other SoC. Qualcomm also bought a new patent portfolio from HP, including the Palm patents and others, so who knows what we'll find in the next chips - maybe a chip in a stylus. Their slogan is "enabling the wireless industry," and they've certainly done that. From satellite communications that required a computer the size of a few refrigerators to battlefield communications to shipping trucks with tracking systems to cell towers, and now the full processor on a cell phone. They've been with us since the beginning of the mobile era and one has to wonder if the next few generations of mobile technology will involve satellites, so if Qualcomm will end up right back where they began: encoding bits of information theory into silicon.
Pour cette dernière émission avant les vacances, le TDMA vous propose une édition allégée ! On commence comme toujours par le journal : en Europe & Amérique du Nord, un enfant autiste britannique reçoit des centaines de cartes d'anniversaires, une entreprise crée des chaussures à partir d'émissions de CO2, et le Canada fait appel à la délation pour lutter contre la criminalité. Et en Amérique latine, les autorités colombiennes saisissent des centaines d'arachnides trafiquées illégalement, un musée en l'honneur de Fidel Castro ouvre à Cuba, et le système de santé vénézuélien continue de s'effondrer. Dans Vert l'avenir, l'entreprise pétrolière Shell poursuit ses explorations controversées au large de l'Afrique du Sud. Et dans Eclairez-nous, Inès expliquera le conflit qui fait rage entre le président de la République démocratique du Congo et le président de l'entreprise minière publique, alors que le cobalt congolais devient indispensable à la transition écologique. Bonne écoute, et à très vite !
On this week's episode of #RollingRocksRadio Scott and Jerry welcome Total Defense Martial Arts' self defense #BJJ coach Scott Allyn. Scott has an undeniable passion for the self defense aspect of Brazilian Jiu Jitsu. We discuss Scott's beginnings in #BJJ, the untold link between Scott coming to TDMA and Episode 11 guest Matt Warner, and the general state of #BJJ today. If you want to contact us with feedback, suggestions, or just to say "Hi" you can e-mail us at rollingrocksradio@protonmail.com Rolling Rocks Radio is also live on the socials. You can find us on Instagram and Twitter and now FACEBOOK! Don't forget Mike from OffYourBackBJJ is offering all our listeners $10 off a $50 dollar or more order. Be sure to head over to https://offyourbackbjj.com/ to check out the spring series preorder and use the code "RollingRocks" for your listener discount! You can find mike on the socials at: Instagram: OffYourBackBJJ Facebook: OffYourBackBJJ Support Total Defense Martial Arts team member Andrew Undercoffer (AKA G. Campbell) and check out his book Dames and Demons, a Steampunk/gumshoe/occult thriller. Available on Amazon in paperback and digital Thanks to the team at Total Defense Martial Arts in Staunton Virginia This episode's music is "But I Am Shafts Of Light" by Maeth. Used under the creative commons licence - Sourced from Free Music Archives --- This episode is sponsored by · Anchor: The easiest way to make a podcast. https://anchor.fm/app
Scanner School - Everything you wanted to know about the Scanner Radio Hobby
What are TDMA Control Channels on P25 trunk systems, and what does this mean for the scanner radio hobby? What You Need To Know P25 TDMA control channels are different from P25 phase two voice channels. Every single P25 system out there up until this point has used an FDMA control channel. A new addition to the P25 suite of standards defines a TDMA control channel for P25 trunking operations similar to the FDMA control channel. The TDMA control channel supports the same functionality as the FDMA control channel. However, with the use of that TDMA control channel, a single 12.5 K Hz channel supports two virtual channels and can be configured to utilize one or both virtual channels for inbound outbound signaling. Before current P25 systems can migrate over to TDMA, they need to only have Phase 2 Talk Groups All session notes with links to the items we talked about can be found on our website at https://www.scannerschool.com/session191 -------------------------------------------------------------- Free SDR Course! Our new free course will introduce you to Software Defined Radios. "The Ultimate Beginner's Guide to Software Defined Radio: Everything you need to know to get started with SDR in an afternoon" is now open for enrollment. Register now at https://courses.scannerschool.com --------------------------------------------------------------- Would you like 1 on 1 help? If you need help with your scanner and are looking for some one on one tutoring, I'd love to help you out. Visit http://www.scannerschool.com/consulting to book your one hour appointment today! --------------------------------------------------------------Help support Scanner School You can help support Scanner School by visiting our support page at http://www.scannerschool.com/support
On today's special episode of #RollimgRocksRadio we're joined by TDMA teammate and head coach of Principle MMA Chris Messina. Chris and his team have a smoker TONIGHT in Tumberville VA to prep for their upcoming debuts in the Outlaw Fight League in June!! Details can be found on Principle MMA's Instagram and as well as The Outlaw Fight League's Facebook page. --- This episode is sponsored by · Anchor: The easiest way to make a podcast. https://anchor.fm/app
Scanner School - Everything you wanted to know about the Scanner Radio Hobby
Free SDR webinar! Our new webinar will introduce you to Software Defined Radios. "Why Every Scanner User Needs an SDR: The #1 Underrated Tool that should be in your setup" will be March 23, 2021. Register now at www.scannerschool.com/webinar --------------------------------------------------------------- Every month I answer your questions on the podcast. You may submit questions at www.scannerschool.com/ask This month I answer: If police and fire stations move to TDMA, does that mean they’re likely to become encrypted soon? Are there any best practices for scanning a partially encrypted digital system? Why would a department or system choose partial encryption? An SDS100 scanner is missing the first seconds of some transmissions. Is there a setting he should check or is this a decoding speed issue? How should you set up a scanner to broadcast the audio over the internet without using the Proscan software? Is it possible to sub a BCD536HP from Sentinel software? All session notes with links to the items we talked about an be found on our website at www.scannerschool.com/session167 --------------------------------------------------------------- Would you like 1 on 1 help? If you need help with your scanner and are looking for some one on one tutoring, I'd love to help you out. Visit www.scannerschool.com/consulting to book your one hour appointment today! Help support Scanner School You can help support Scanner School by visiting our support page at www.scannerschool.com/support
Scanner School - Everything you wanted to know about the Scanner Radio Hobby
Free SDR Training! Check out our new course, "The Ultimate Beginner's Guide to Software Defined Radios: Everything you need to know to get started with SDR in an afternoon." You can enroll for free at https://courses.scannerschool.com --------------------------------------------------------------- Get started with Scanning in 2021 Our "2021 Scanner Radio Crash Course" Webinar will be January 26, 2021 at 8pm Eastern US time. Register for the live webinar or catch the replay at www.scannerschool.com/2021 This webinar will get you started or up to speed on Scanning for 2021. --------------------------------------------------------------- Do you want to get started with scanning or brush up on basics in the new year? In this episode, Phil goes through a rapid-fire rundown of basic terminology and types of scanning from analog to digital transmissions. This is part 1 of this 2021 crash course. What You Will Take Away from This Week's Podcast: Scanning is the ability to cycle through many frequencies per second, or to monitor one or several frequencies, allowing you to monitor several agencies on one radio. What is a frequency and how do we measure it The difference between Hertz, Kilo-Hertz, and Mega-Hertz. AM, FM, and USB Simplex, Duplex, and Repeated Transmissions The benefits of Analog and Digital Transmissions The differences between FDMA and TDMA and what this means for Digital Transmissions P25 is short for Project 25, a set of standards under telecommunications associations. What DMR is and the differences between Tier 1, 2 and 3 NXDN and it's benefits All session notes with links to the items we talked about an be found on our website at www.scannerschool.com/session160 --------------------------------------------------------------- Would you like 1 on 1 help? If you need help with your scanner and are looking for some one on one tutoring, I'd love to help you out. Visit www.scannerschool.com/consulting to book your one hour appointment today! Help support Scanner School You can help support Scanner School by visiting our support page at www.scannerschool.com/support
Hi everyone! Welcome back to FC Media! Who is Noble? Noble is a cloud funding, capital raising consultant for startups and companies. Noble A. DraKoln has been involved in multiple tech startups as a consultant, investor and director. In the early days of the conversion from paging to full digital cellular networks, from TDMA to CDMA, he successfully ran a venture that made mergers and acquisitions in the 900mHz, 150mHz, and 450mHz spectrum's. At the introduction of DVDs he successfully ran and sold off a VHS to DVD conversion studio, and he has been a part of guiding, consulting, and assisting in financing internet startups in both Web 1.0 and Web 2.0 phases. Mr. Drakoln started out as a futures/commodities broker at the age of nineteen trading the E-mini S&P, gold futures contracts, and treasury bond strips. Since that time he has authored the Wiley & Sons published best-selling books Winning the Trading Game and Trade Like a Pro. Over the span of his twenty year career he has traded S&P 500 contracts, various options, and futures for himself and clients. His books have been translated into multiple languages, he has been a keynote speaker around the world, contributing writer to Forbes, Futures Magazine, along with dozens of other financial magazines, and a radio and T.V. financial commentator on Bloomberg and Fox Business News. Noble's consulting service can be found here: https://catalystgrowthadvisors.com/catalyst-growth-advisors/contact-form/ Today we asked Noble the following questions: 1. What is your background? 2. What is 506(c) Exemption? 3. How should Japanese startups raise money when they first launch a business in America? 4. How should Japanese companies choose a Crowdfunding and Capital Raising Consultant like yourself? - what should a successful consultant look like?
In episode two of Capconversation, we meet Dr George Calhoun, professor at Stevens Institute of Technology. Calhoun’s fascinating career journey began in the high-tech segment of the wireless communications industry in the 1980s. He is a co-founder of InterDigital Communications Corporation (NASDAQ: IDCC), where he was involved for twelve years in the pioneering development of digital cellular technology, including the first systems based on TDMA technology (the architecture underlying approximately 80 percent of today's cellular networks).
Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.09.11.293829v1?rss=1 Authors: Lee, J., Leung, V., Lee, A.-H., Huang, J., Asbeck, P., Mercier, P. P., Shellhammer, S., Larson, L., Laiwalla, F., Nurmikko, A. Abstract: Multichannel electrophysiological sensors and stimulators, especially those used for studying the nervous system, are most commonly based on monolithic microelectrode arrays. Such architecture limits the spatial flexibility of individual electrode placement, posing constraints for scaling to a large number of nodes, particularly across non-contiguous locations. We describe the design and fabrication of sub-millimeter size electronic microchips (Neurograins) which autonomously perform neural sensing or electrical microstimulation, with emphasis on their wireless networking and powering. An ~1 GHz electromagnetic transcutaneous link to an external telecom hub enables bidirectional communication and control at the individual neurograin level. The link operates on a customized time division multiple access (TDMA) protocol designed to scale up to 1000 neurograins. The system is demonstrated as a cortical implant in a small animal (rat) model with anatomical limitations restricting the implant to 48 neurograins. We suggest that the neurograin approach can be generalized to overcome many scalability issues for wireless sensors and actuators as implantable microsystems Copy rights belong to original authors. Visit the link for more info
Episode 11 is up and we are stoked to have our first guest, Matt Warner! Matt is a purple belt at Total Defense Martial Arts, an assistant adult coach, kids coach, and lynch pin in the TDMA team. Matt is also a successful horror writer, web designer, and screenplay writer. In this episode we go deep on what it's like being a writer, what brought Matt to the Shenandoah Valley of Virginia, how he found Brazilian Jiu Jitsu, and what BJJ has done for him. We had a great time recording this episode and inside team jokes are abound. Scott and Jerry hadn't seen Matt since March when the Corona lockdown started, so we had a great time seeing out team mate and brother again. If you want to check out any of Matt's books or other media you can find him at MatthewWarner.com Matt also has an author page on Amazon.com - Matthew Warner @ Amazon.com Matt can also be found on the socials Twitter - @MatthewWarnerVA Instashizzle - @MWGrappler FaceBook - Matthew.Warner.160 If you want to contact us with feedback, suggestions, or just to say "Hi" you can e-mail us at rollingrocksradio@protonmail.com Rolling Rocks Radio is also live on the socials. You can find us on Instagram and Twitter Support Total Defense Martial Arts team member Andrew Undercoffer (AKA G. Campbell) and check out his book Dames and Demons, a Steampunk/gumshoe/occult thriller. Available on Amazon in paperback and digital Thanks to the team at Total Defense Martial Arts in Staunton Virginia This episode's music is "But I Am Shafts Of Light" by Maeth. Used under the creative commons licence - Sourced from Free Music Archives --- This episode is sponsored by · Anchor: The easiest way to make a podcast. https://anchor.fm/app
Crowdfunding and Capital Raising Consultant | Publisher of “Accredited Investor Journal” | Author of the best selling books “Trade Like a Pro” and “Winning the Trading Game” |18k+ Followers on LinkedIn Noble A. DraKoln has been involved in multiple tech startups as a consultant, investor and director. In the early days of the conversion from paging to full digital cellular networks, from TDMA to CDMA, he successfully ran a venture that made mergers and acquisitions in the 900mHz, 150mHz, and 450mHz spectrum’s. At the introduction of DVDs he successfully ran and sold off a VHS to DVD conversion studio, and he has been a part of guiding, consulting, and assisting in financing internet startups in both Web 1.0 and Web 2.0 phases. Mr. Drakoln started out as a futures/commodities broker at the age of nineteen trading the E-mini S&P, gold futures contracts, and treasury bond strips. Since that time he has authored the Wiley & Sons published best-selling books Winning the Trading Game and Trade Like a Pro. Over the span of his twenty year career he has traded S & P 500 contracts, various options, and futures for himself and clients. His books have been translated into multiple languages, he has been a keynote speaker around the world, contributing writer to Forbes, Futures Magazine, along with dozens of other financial magazines, and a radio and T.V. financial commentator on Bloomberg and Fox Business News.
Crowdfunding and Capital Raising Consultant | Publisher of “Accredited Investor Journal” | Author of the best selling books “Trade Like a Pro” and “Winning the Trading Game” |18k+ Followers on LinkedIn Noble A. DraKoln has been involved in multiple tech startups as a consultant, investor and director. In the early days of the conversion from paging to full digital cellular networks, from TDMA to CDMA, he successfully ran a venture that made mergers and acquisitions in the 900mHz, 150mHz, and 450mHz spectrum’s. At the introduction of DVDs he successfully ran and sold off a VHS to DVD conversion studio, and he has been a part of guiding, consulting, and assisting in financing internet startups in both Web 1.0 and Web 2.0 phases. Mr. Drakoln started out as a futures/commodities broker at the age of nineteen trading the E-mini S&P, gold futures contracts, and treasury bond strips. Since that time he has authored the Wiley & Sons published best-selling books Winning the Trading Game and Trade Like a Pro. Over the span of his twenty year career he has traded S & P 500 contracts, various options, and futures for himself and clients. His books have been translated into multiple languages, he has been a keynote speaker around the world, contributing writer to Forbes, Futures Magazine, along with dozens of other financial magazines, and a radio and T.V. financial commentator on Bloomberg and Fox Business News.
Noble A. DraKoln has been involved in multiple tech startups as a consultant, investor and director. In the early days of the conversion from paging to full digital cellular networks, from TDMA to CDMA, he successfully ran a venture that made mergers and acquisitions in the 900mHz, 150mHz, and 450mHz spectrum's. At the introduction of DVDs he successfully ran and sold off a VHS to DVD conversion studio, and he has been a part of guiding, consulting, and assisting in financing internet startups in both Web 1.0 and Web 2.0 phases. https://www.linkedin.com/in/drakoln/
Dans le TDMA cette semaine : Les réseaux sociaux pour lutter contre les clichés. #Vraie FemmeAfricaine est lancée sur par Bintou Mariam Traoré, journaliste et féministe ivoirienne. En moins de 24 heures, cet hashtag est devenu viral sur le net. Au Japon, la journée de lutte pour les droits des femmes prend une ampleur particulière dans un pays où l’égalité femme-homme est un sujet sensible. En Colombie, le gouvernement a décide de donner accès à Internet aux familles qui ont peu de moyens. Retrouvez bien sur nos chroniques, le rendez-vous histoire, la chronique environnement et la wonderwoman de la semaine, Euzhan Palcy réalisatrice. Bonne écoute et à la semaine prochaine ! sources : Le Temps / Novaya Gazeta / Radio Canada, Le Devoir Afropreunariat / Fip / Socialnetlink / Bénin web TV / Le Monde Afrique / Liberté, Algérie Eco, El Watan / Le commerce du levant, l'Orient le jour / l'Orient le jour, méditérrannée audiovisuel / Le courrier du Vitenam, Japan Times, Daily Times, International the News / VDN, Outre-mer 1ere, RCI / Le Monde /
Au programme de ce TDMA présenté par Léa Delaplace : Au Chili, ça gronde encore dans la rue, sur l’île de Lesbos les voix s’échauffent également tout comme à Gaza. La Chronique Éclairez-nous nous parlera de la Chine qui veut gagner des miettes de territoires extérieurs. On abordera le coronavirus, le cancer et... la grippe. Comme les journalistes sont avides d’argent c’est bien connu, nous entendrons parler du monde bancaire et financier, notamment dans la chronique Histoire. Côté environnement, on parlera neutralité carbone et on finira en beauté avec le portrait d’une photographe, Wonderwoman de la semaine.
Armelle vous présente une nouvelle émission inédite du TDMA. Même durant les jours fériés, les équipes travaillent! Au programme : -Les journaux du Tour du monde; -Éclairez-Nous : Malgré la Coupe du monde remportée par l'Afrique du Sud, l'unité du pays n'est pas au rendez-vous, les tensions raciales subsistent. -Le Rendez-vous histoire : Retour sur les origines du Sahara occidental, une région qui suscite de nombreux débats. -Le Feu vert : une nouvelle étude révèle que les macaques s’adapteraient très bien à la culture d’huile de palme, et permettraient même d’augmenter les rendements. -WonderWoman : Fatima Al Qadiri musicienne et artiste koweïtienne. Dans sa musique, elle aborde différentes thématiques comme la brutalité policière et a signé la musique du film Atlantique, Grand Prix du Festival du Cannes cette année. Réalisation : Anne-Laure Juif/Enzo Maubert Rédaction en chef : Perrine Roguet/Eglantine Puel
Au Japon , une nouvelle étude montre qu'actuellement, plus de japonais sont morts suite à la fermeture des usines nucléaires au Japon (après le tremblement de terre et le tsunami de Tohoku en 2011) que l'accident en lui même. Cette hausse de la mortalité est expliquée par le remplacement du nucléaire par des énergies fossiles, et par la hausse des prix de l'électricité. Une chronique de Baptiste Candas.
Le Tour du Monde de l'Actu du 4 novembre présenté par Léa Delaplace! Au programme : des sauterelles comme sources vitales d'alimentation, des groupes féminins de lutte anti-braconnage, le procès des indépendantistes en Catalogne, la chasse aux sorcières durant la Renaissance ou en encore l'accident nucléaire de Tohoku. Rédaction en chef : Anne-Laure Juif et Perrine Roguet Réalisateur : Enzo Maubert Remerciements : ESJ Lille
5ème saison pour le Tour du monde de l'Actu! Nouvelle équipe, nouvelles voix… mais toujours une heure de podcast hebdomadaire pour décrypter l'actualité internationale !
In this podcast episode, Dustin, Eric and Jeff cover TDMA gender.
Cette semaine, dans le TDMA, nous nous intéressons à la crise des opioïdes aux Etats-Unis avec la chronique Eclairez-nous. Dans nos journaux, au Costa-Rica, la pilule du lendemain pourrait bientôt être légalisée. La différence de prix entre la France et les Outre-Mers a suscité une campagne de la France insoumise : #EtLesOutreMers. En sport, nous vous présentons Pierre-Louis Coste et Amaury Lavergne, figure du Championnat du monde de bodyboard. La chronique Pas-à-pas s'intéresse à la fuite des cerveaux, présentée comme les migrations des élites. Bonne écoute à tous ! Sources : RFI Afrique, Africanews, Jeune Afrique, La Prensa (Panama), Telemetro, Reuters, La Nacion (Costa Rica), El Mundo, The Guardian, Latino USA, France 24 en espagnol, Pagina 12, Clarin, Bangkokpost, World Economic Forum, Asia News, Radio Free Asia, New York Times, Le Figaro, France Inter, Euronews, Les Echos, France 24, Jeune Afrique, France info,
Embarquez dans ce nouveau Tour du Monde de l'Actu ! Notre équipe s'arrête à Madagascar, où des forêts sont menacées par des migrants climatiques. Un hommage est rendu à Alberto Cortez, grand musicien argentin décédé. La japonaise Shiori Ito publie en français "La Boite Noire", son témoignage et une enquête sur les violences sexuelles au Japon. Le journal des sports vous présente Zion Williamson, jeune basketteur nommé récemment joueur de l'année du championnat universitaire. Et deux femmes sont à l'honneur pour ce TDMA. "Eclairez-nous" fait le portrait de Zuzana Caputova, élue présidente slovaque. "Wonderwoman" raconte le parcours de Nakabuye Hilda Flavia, une jeune Ougandaise investie pour le climat. Bonne écoute Sources : Africanews, Jeune Afrique, RFI Afrique, RFI, Balkan Insight Reuters, New York Times, CNN, El Tiempo, El Heraldo, El Espectador, La Razon, El Deber, Clarin, Pagina 12, CNN en espagnol, Bloomberg, TechInsider, Japanfm, La 1ère, France-Antilles, Région Guadeloupe, Usine Nouvelle, RCI, Guadeloupe énergie, Geo.fr, Basketusa.com, Towncarolina.com, Les Inrocks, HOSPODÁRSKÉ NOVINY, Le Monde, Le Figaro
Au programme du Tour du Monde de l'Actu cette semaine, Un vice-président de commune mis en examen pour conduite en état d'ivresse au Pérou, des parents qui préfèrent se séparer de leurs enfants et les envoyer à la campagne plutot que de les laisser vivre dans des villes trop pullées en Mongolie. Dans le journal outre-mer, l'INSEE annonce une démographie doublée en Guyane d'ici 2050. Eclairez-nous vous expliquera pourquoi les locuteurs français sont de moins en moins nombreux au Canada. Et la Wonderwoman de la semaine, Ridhima Pandey. Ce n'est qu'un brève apperçu, plein d'autres infos vous attendent dans le TDMA cette semaine ! sources : RPP, El Pais, El Espectador, Efe,The Guardian, Asahi, Hong-Kong Free Press, CBC, The Strait Times, National Geographic, Quartz,L'orient le jour, unwomen.org, Liberté Algérie, L'expressiondz, el watan, La 1ère, L'OBS, Outremers 360, INSEE, Radio1 Tahiti, ffa, les sports infos, worldcurling.org, beachsoccer.fr, Her's,The Guardian, The Independant, Al Jazeera, Radio Canada, Journal Metro, USA today.
Bienvenue pour ce nouveau TDMA ! Que vont donner les accords de paix en Centrafrique ? Eclairez-vous vous offre les pistes. Du côté des journaux : 4,6 milliards de dollars, c’est le montant de la dette de la Somalie. Le pays est en discussion avec le FMI pour annuler la dette. Portrait du soi-disant « Président Pamatong », un homme politique philippin assez sulfureux. Au Yemen, les malades atteintes de cancer ne peuvent plus avoir accès à des soins spécifiques. Découverte musicale avec Voyage sonore : Betty Davis. Wonderwoman continue sa série sur les figures de l’Antiquité : place à Andromaque. Sources : RFI, Jeune Afrique, abidjan.net, La Nacion, El Nacional, La Prensa, Says, Philstar, The Independent (Singapour), The Japan Times, Radio Free Asia, Reuters, Pacific Daily News, El Watan, Al Post, Liberté , Algérie Focus, l'Orient le jour, RCI, La 1ère, Les sports infos, Ski chrono, IAAF, Culottées sur Betty Davis Bagieu, documentaire Arte sur Betty Davis Nasty Gal, RFI, The Washington Post, Monde Afrique, RTBF, RTL Belgique, Le Soir, Mother Jones, The Guardian, The Huffpost
Au programme des journaux, au Chili, un conflit social oppose les pêcheurs au gouvernement. Une innovation au Japon… les funérailles des chiens-robots sont maintenant possibles. Du côté de la culture, l’art iranien continue de s’exporter, malgré les sanctions. En Guyane, le plan de lutte contre l’orpaillage clandestin est renforcé. Si vous souhaitez chausser vos baskets, le TDMA vous conseille de tester le bossaball, le sepak tekraw ou le swamp football ! Avec la chronique Eclairez-nous, le TDMA vous explique la montée du populisme en Pologne. Bonne écoute ! Sources : Jeune Afrique, News 24, RFI Afrique, Radiookapi, msf.fr, Lemagafrik, France 24 en espagnol, BioBioChile, Teletrece, Ultima Hora, ABC Color, Radio Panama, La Prensa, Telemetro, NHK WORLD, Asia News, The Star Online, Financial Times, Al Jazeera, Haaretz, i24, Middle East Eye, La 1ère, WWF, Bordeaux Gazette, RCI, BBC, The Herald Scotland, The Reykjavik Grapevine, RFI, Der Spiegel
Scanner School - Everything you wanted to know about the Scanner Radio Hobby
DMR - Digital Mobile Radio DMR is a pure digital system, meaning there is no analog. DMR uses TDMA to double the amount of data that can be sent on a single frequency Today we'll discuss the theory of DMR and how conventional DMR works All session notes with links to the items we talked about can be found on our website at www.scannerschool.com/session55 Please support the Scanner School podcast. Visit www.scannerschool.com/support to see how you can help us. Some of the ways you can support us won't cost you any additional money!
Au sommaire de ce TDMA, Eclairez-nous revient sur la polémique autour de la messe en l'honneur Franco en Espagne. Nos journaux s'arrêtent sur la communauté bahaïe au Yemen et vous présentent Viola Desmond, la "Rosa Parks du Canada", la première femme noire à figurer sur un billet de banque en Amérique du Nord. En Chine, découvrez le championnat de dragon bateau. Mais surtout, n'hésitez pas de découvrir en deuxième partie d'émission les résultats des derniers championnat du monde de sauvetage sportif, qui ont eu lieu en Australie. La chronique Pas à Pas fait un stop sur les mesures drastiques prises par le gouvernement en Angola contre les migrations. Le Tour du Monde de l'Actu, c'est aussi un partenariat le Jeu de l'Oie, la revue internationale de Sciences Po Lille. Sources : BusinessNews, AfricaNews, Jeune Afrique, Alsuamaitprize.org, Reussirbusiness, Sowetan Live, HuffPost CNN, Balkan Insight, BBC, Lactualité.com, RFI, The Print, euronews, Asianews, Orient-le Jour, The Times of Israel, Orient XXI, Courrier International, Al Jarida, Channel 10, Amnesty International, La 1ère, France Antilles, ARS Guadeloupe, Opfra, Caledonia, Les sports infos, Fédération française de sauvetage et de secourisme, El Mundo, El diario
Le Tour du Monde de l'Actu repart pour une quatrième saison ! Cette semaine, découvrez notre nouvelle équipe, vos nouveaux rendez-vous : sport, migrations, et retrouvez la bonne humeur du TDMA. Bonne écoute ! Sources : Le Routard, Tunisie en numérique, Public Holidays, RFI, Mediacongo, Actualité.cd, Media Terre, Investir au Cameroun, FODER, The Guardian, Splinter News, BBC, Radio Canada, Newsweek, EFE, Infobae, El Periodico, La Nacion (Chili), El Observador, La Prensa (Panama), O Globo, El Mundo (Salvador), AFP, Xinhuanet, ArabNews, Courrier International, Süddeutsche Zeitung, France-Antilles, Arsm, RCI, MegaZap, La 1ère, Discours de la vie publique, France-Guyane, El pPaís
Scanner School - Everything you wanted to know about the Scanner Radio Hobby
Last week we introduced P25. This week we build on that introduction session and discuss conventional and trunking with P25. This includes Phase 1, Phase 2, and X2-TDMA systems. We also have a few hints and tricks for you to optimize your P25 reception on your Uniden, Whistler, GRE, or Radio Shack scanner radio. You can grab the show notes for today's podcast at www.scannerschool.com/session15 You can also take a look at our glossary for all of the acronyms we used in this session at www.scannerschool.com/glossary We also have a live Facebook Q&A Session every Saturday at 11am. Join us at www.scannerschool.com/facebook 73 Phil / w2lie
Series Eight Episode One of the ICQ Amateur / Ham Radio Podcast has been released. In this episode, Martin M1MRB / W9ICQ is joined by Leslie Buttersfield (G0CIB) and Chris Howard (M0TCH) to discuss the latest Amateur / Ham Radio news. Colin M6BOY rounds up the news in brief, and this episodes feature Martin Butler M1MRB / W9ICQ provides an Introduction to DMR/TDMA. Extremely young YL Intermediate passes Gerry Wells 1929-2014 No change yet for UK Amateur Radio Exams ZS90SARL PZK and IARU Anniversaries CQ Hall of Fame Awards UK HF Propagation Prediction Maps
Speaker: S. Han Abstract: A cyber-physical system (CPS) is a system featuring a tight combination of, and coordination between, the system's computational and physical elements. A large-scale CPS usually consists of several subsystems which are formed by networked sensors and actuators, and deployed in different locations. These subsystems interact with the physical world and execute specific monitoring and control functions. How to organize the sensors and actuators inside each subsystem and interconnect these physically separated subsystems together to achieve secure, reliable and real-time communication is a big challenge. In this talk, I will first present a TDMA-based low-power and secure real-time wireless protocol. This protocol can serve as an ideal communication infrastructure for CPS subsystems which require flexible topology control, secure and reliable communication and adjustable real-time service support. I will describe the network management techniques for ensuring the reliable routing and real-time services inside the subsystems and data management techniques for maintaining the quality of the sampled data from the physical world. To evaluate these proposed techniques, we built up a prototype system and deployed it in different environments for performance measurement. I will also present a light-weighted and scalable solution for interconnecting heterogenous CPS subsystems together through a slim IP adaptation layer. This approach makes the underlying connectivity technologies transparent to the application developers thus enables rapid application development and efficient migration among different CPS platforms.
Speaker: S. Han Abstract: A cyber-physical system (CPS) is a system featuring a tight combination of, and coordination between, the system's computational and physical elements. A large-scale CPS usually consists of several subsystems which are formed by networked sensors and actuators, and deployed in different locations. These subsystems interact with the physical world and execute specific monitoring and control functions. How to organize the sensors and actuators inside each subsystem and interconnect these physically separated subsystems together to achieve secure, reliable and real-time communication is a big challenge. In this talk, I will first present a TDMA-based low-power and secure real-time wireless protocol. This protocol can serve as an ideal communication infrastructure for CPS subsystems which require flexible topology control, secure and reliable communication and adjustable real-time service support. I will describe the network management techniques for ensuring the reliable routing and real-time services inside the subsystems and data management techniques for maintaining the quality of the sampled data from the physical world. To evaluate these proposed techniques, we built up a prototype system and deployed it in different environments for performance measurement. I will also present a light-weighted and scalable solution for interconnecting heterogenous CPS subsystems together through a slim IP adaptation layer. This approach makes the underlying connectivity technologies transparent to the application developers thus enables rapid application development and efficient migration among different CPS platforms.
The Cell Phone Junkie Show #63 1:02:05 Show Notes Still using a TDMA phone, expect to start paying more for the privilege! Also, we've got some good news for the RAZR fans, plus a way to unlock the iPhone?
The Cell Phone Junkie Podcast #6 Show Notes This is show #6 of The Cell Phone Junkie. 25:03 This show talks about cheap EVDO, expensive TDMA, Chocolate and FasTap. Yes, those are all mobile phone terms! The Cell Phone Junkie talks about the Motorola Q for $75, Cingular charging extra for use of the TDMA network and a brief overview of the new HP iPAQ 6925 coming soon from Cingular�hopefully.
© 2020-2025 Ivy Podcast Discovery LLC
