Tag Archives: google

7 Things You Should Know About Tor | Electronic Frontier …

Posted: September 25, 2016 at 7:19 am

Updated: July 1st at 6:30PM to add information about traffic correlation attacks.

We posted last week about the Tor Challengeand why everyone should use Tor. Since we started our Tor Challenge two weeks ago we have signed up over 1000 new Tor relays. But it appears that there are still some popular misconceptions about Tor. We would like to take this opportunity to dispel some of these common myths and misconceptions.

One of the many things that we learned from the NSA leaks is that Tor still works. According to the NSA “Tor Stinks”slides revealed by the Guardian last year, the NSA is still not able to completely circumvent the anonymity provided by Tor. They have been able to compromise certain Tor users in specific situations. Historically this has been done by finding an exploit for the Tor Browser Bundle or by exploiting a user that has misconfigured Tor. The FBIpossibly in conjunction with the NSAwas able to find one serious exploit for Firefox that lead to the takedown of Freedom Hosting and exploit of its users. Firefox was patched quickly, and no major exploits for Firefox affecting Tor users appear to have been foundsince. As the Tor developers noted in 2004, if someone is actively monitoring both your network traffic and the network traffic of the Internet service you’re communicating with, Tor can’t prevent them from deducing that you’re talking to that service. Its design does assume that at least one side of the connection isn’t being monitored by whomever you’re trying to stay private from.

We can conclude from this that Tor has probably not been broken at a cryptographic level. The best attacks on Tor are side-channel attacks on browser bugs or user misconfiguration and traffic correlation attacks.

One of the most common misconceptions we hear is that Tor is only used by criminals and pedophiles. This is simply not true! There are many types of people that use Tor. Activists use it to circumvent censorship and provide anonymity. The military uses it for secure communications and planning. Families use Tor to protect their children and preserve their privacy. Journalists use it to do research on stories and communicate securely with sources. The Tor Project website has an excellent explanation of why Tor doesn’t help criminals very much. To paraphrase: Criminals can already do bad things since they will break laws they have much better tools at their disposal than what Tor offers, such as botnets made with malware, stolen devices, identity theft, etc. In fact using Tor may help you protect yourself against some of these tactics that criminals use such as identity theft or online stalking.

You are not helping criminals by using Tor any more than you are helping criminals by using the Internet.

Another common opinion that we hear is that Tor was created by the military and so it must have a military backdoor. There is no backdoor in the Tor software. It is true that initial development of Tor was funded by the US Navy. However, it has been audited by several very smart cryptographers and security professionals who have confirmed that there is no backdoor. Tor is open source, so any programmer can take a look at the code and verify that there is nothing fishy going on. It is worked on by a team of activists who are extremely dedicated to privacy and anonymity.

As far as EFF is aware, no one in the US has been sued or prosecuted for running a Tor relay. Furthermore we do not believe that running a Tor relay is illegal under US law. This is, of course, no guarantee that you won’t be contacted by law enforcement, especially if you are running an exit relay. However EFF believes this fact so strongly that we are running our own Tor relay. You can find out more about the legalities of running a Tor relay at the Tor Challenge Legal FAQ. However, if you are going to use Tor for criminal activity (which the Tor project asks that you not do) you can create more problems for yourself if you get prosecuted. Criminal activity also brings more scrutiny on to Tor making it worse for the public as a whole.

You might think that because it is privacy software Tor must be hard to use. This is simply not true. The easiest way to get started with Tor is to download the Tor Browser Bundle. This is a browser that comes pre-configured to use Tor in a secure manner. It is easy to use and is all you need to start browsing with Tor. Another easy way to use Tor is with Tails. Tails is a live operating system that runs on a DVD or thumb drive. Tails routes your entire Internet connection through Tor. And when you shut it down, Tails forgets everything that was done while it was running.

It is true that Tor is slower than a regular Internet connection. However, the Tor developers have been doing a lot of hard work to make the Tor network faster. And it is faster today than ever before. One of the best things that can be done to speed up the Tor network is to create more relays. If you would like to contribute to making the Tor network faster, you can check out our Tor Challenge

Tor is not perfect; you can destroy your own anonymity with Tor if you use it incorrectly. That’s why it is important to always use Tor Browser Bundle or Tails and make sure that you keep your software up to date. It is also important to remember that if you log into services like Google and Facebook over Tor, those services will still be able to see your communications within their systems. Additionally Tor users should be mindful of the fact that an adversary who can see both sides of their connection may be able to perform a statistical analysis to confirm that the traffic belongs to you.

Tor is some of the strongest anonymity software that exists. We think that it is important to dispel misconceptions about it so that the public can be more informed and confident in its usefulness. There are many great reasons to use Tor and very few reasons not to. So get started with Tor, and take back your privacy online.

View post:
7 Things You Should Know About Tor | Electronic Frontier …

Posted in Tor Browser | Comments Off on 7 Things You Should Know About Tor | Electronic Frontier …

What is DNA? | DNA Encyclopedia

Posted: September 14, 2016 at 1:08 am

In order to truly answer the question of What is DNA? one has to go back to the elementary or high school biology classes.

DNA is the complex chemical that carries genetic information.

DNA dictates life in two manners:

There are elements called chromosomes in each cell of the human body. To be more precise, each cell contains 23 pairs of chromosomes.

Youll be astonished to know that some 50 to 100 thousand genes are held within these chromosomes. Since each of these genes could take value from one of the two values of its parent cells, hence you can imagine the possible variability in this structure.

These genes are made up of what is called DNA that is Deoxyribose Nucleic Acids. Apart from these genes that carry essential genetic information and only account for 2% of DNAs structure, the rest of the 98% of DNA is still a mystery.

Biologists call it junk DNA as there are no known proteins or traits that are coded or built by this part of DNA. This junk DNA, as well as the genetic information-carrying part only, varies in structure owing to the presence of four nucleotide bases throughout the DNA in differing order and sequence.

Think of these four nucleotide bases in DNA as letters that form an alphabet. Just like the way the order of letters determines the meaning of the word that is formed, the sequence of these nucleotide bases concludes what information is available for the production of proteins that consequently take an active part in the formation and growth of the body.

Most of the DNA is present within the nucleus of the cells. This is known as nuclear DNA. Mitochondria also hold a modest quantity of DNA, which is termed as mitochondrial DNA. The latter is useful in tests related to someones distant maternal lineage.

What is great about DNA is that it has a very autonomous self-replication mechanism in action. The replication process makes use of the two strands of DNA. Each of these strands acts as a template and after going through a series of steps is converted into dual stranded DNA once again. This replication is very important because when the cell divides, the newly formed cell requires the same set of instructions for it to function and grow and the replicated DNA serves this purpose.

Summing up the answer for what is DNA, it could easily be said that its a well-designed program spanning thousands of lines of codes that has instructions for everything that the cell needs to perform.

DNA, no matter how short the acronym sounds, is a vast topic that requires serious dedication of time and energy before one can grasp what it is and how it affects the life within and around us.

This article sets the foundations for a series of articles in which we will cover various aspects of DNA, the concepts, the technology and its applications. Right now, without going into the peculiar details, we are only going to briefly introduce these topics. You can think of it as a short glossary for DNA terminology.

Learning about DNA starts with a sound knowledge of what is it made up of and how these chemicals interact with each other to form a structure that builds a DNA molecule. You have to look carefully at what essential functions DNA performs in the cell that it is located in, by the way, its present in each cell of human as well as a body of living organisms.

In most basic terms, DNA is the master plan of life that works all the way from inception to growth. It holds all of the hereditary information and passes it from generation to generation.

Once you have encountered the double helix structure of DNA, as proposed by James Watson and Francis Crick in 1953, you should move on to advance topics like DNA replication. DNA replication tells us that each DNA is able to produce an exact copy of itself and this is made possible with the help of DNA polymerase, an enzyme that takes an active role in the process. Youll also come across DNA synthesis, which is an artificial technique to produce copies of DNA and is based on the concept of DNA replication.

While DNA holds all of the information required for the cell to perform its actions and produce the essential proteins, it is important to note that DNA doesnt interfere directly with the elements of cytoplasm outside the cell nucleus and disseminates this useful information through a messenger RNA. This is done through a process called DNA transcription.

The buzz words that have really boosted the popularity of DNA among the masses are DNA cloning and DNA testing. Who has not heard of Dolly, the first ever cloned animal? DNA testing, owing to a large number of social, commercial and forensic uses, has drawn the attention towards further studies and research in DNA.

DNA is the short term for Deoxyribonucleic Acid. Almost every cell in an individuals body has the same DNA, as the DNA is located in the cell nucleons. People, most of the times, learn what is DNA and its importance for the human body, in school.

Anyway, properly understanding what DNA is, is always important, mostly if you are working in areas in which DNA results have importance on the evolution of some cases. For starter, to understand what is DNA, you need to know that it contains all the information used in the development and functioning of all living organisms.

What is the structure of DNA, is also a common question that people seem to ask?

Human DNA consists of about 3 billion bases and more than 99 percent of them are the same, for all individuals. Another important aspect of what is DNA is that it can replicate and make copies of itself. The use of DNA linked information has become more important in science and medicine, as researchers have found that it can be used to cure diseases, or better said to avoid babies from inheriting diseases their parents are suffering from. This currently, is considered to be a major goal for scientists, who are searching for treatments, cure and also for prevention when it comes to genetic conditions. DNA becomes even more important for people who think that such risks are higher in their particular cases.

Researchers aim to detect individuals who are predisposed to develop such diseases and that means that scientists can find treatments, to be used for the purpose to prevent genetic conditions. DNA is simple to understand, but the way DNA functions is more complex.

The discovery of DNA, in fact, revolutionized both science and medicine, having numerous effects on other linked domains, such as legal and social areas. Samples of DNA are, all the times, taken from the scene of a crime, and it is a safe way to find and convict criminals, being an accepted and trusted evidence in court.

What is DNA can be easily answered when you understand that it transfers hereditary information from one generation to another, determining, at the same time, the structure of cells.

Download this Infographic as PDF

Views: 1,509

Share on Facebook Share

200

Share on Google Plus Share

2

Share on Pinterest Share

2

Share on LinkedIn Share

0

Go here to read the rest:
What is DNA? | DNA Encyclopedia

Posted in DNA | Comments Off on What is DNA? | DNA Encyclopedia

Technology – Blue Sky Innovation – Chicago Tribune

Posted: August 27, 2016 at 7:13 pm

The Cincinnati Zoo has deleted its Twitter account, a day after the zoo asked the internet to please stop making so many jokes and memes about Harambe, the gorilla who was shot and killed there in May after a child entered his enclosure. “We deactivated our Twitter accounts,” zoo spokeswoman Michelle…

Pinterest is buying Instapaper, the app that lets you save an article to read later, as it works to understand the technology behind recommending stories for people. The acquisition of Instapaper, which has expertise in saving, curating and analyzing articles, aligns with Pinterest’s goal to provide…

Backpack makers like to consider their products “enablers,” company executives say, especially of active lifestyles. No matter where you go or what you do, a reliable backpack can keep your stuff safe and sound right there with you. Now, backpacks are enabling your smartphone addiction. Traditionally,…

Twitter is making a “quality filter” available to all users, allowing them to hide tweets that contain threats, appear to be automated or spammy. The feature was previously only available to users with “verified” accounts, which are typically celebrities, public figures or journalists, and who…

The option to hail a ride in a self-driving car, which was science fiction just a few years ago, will soon be available to Uber users in Pittsburgh, the first time the technology has been offered to the general public. Within weeks, the company announced Thursday, customers will be able to opt…

Twitter said Thursday it has suspended 360,000 accounts since mid-2015 for violating its policies banning the promotion of terrorism and violent extremism. The San Francisco-based company said in a blog post that it has also made progress in preventing users who were suspended from immediately…

Michael Udall earned three years worth of tuition and a hefty medal whenhis college video game team won a national tournament in April. Thathaul marksthe first of what the Arizona State junior hopes are many accomplishments in a storied e-sports career. But Udall covets one achievementnot…

Today, the software economy makes hailing a ride incredibly easy. Tap a button, and a driver will arrive at your door to whisk you away. But in just a few years, the car may show up without any driver inside at all. Ford said Tuesday that it wants to be first to roll out a completely automated…

Google nailed email with the 2004 introduction of Gmail. Now it’s the No. 1 form of electronic correspondence in the U.S. But as traditional email falls out of favor with a growing sliver of the population, Google has struggled to make its messaging tools relevant or introduce new ones that resonate…

Like many in Silicon Valley, technology entrepreneur Bryan Johnson sees a future in which intelligent machines can do things like drive cars on their own and anticipate our needs before we ask. What’s uncommon is how Johnson wants to respond: Find a way to supercharge the human brain so that we…

Read this article:

Technology – Blue Sky Innovation – Chicago Tribune

Posted in Technology | Comments Off on Technology – Blue Sky Innovation – Chicago Tribune

Offshore Fishing Charters in Florida

Posted: August 25, 2016 at 4:34 pm

Saltwater Fishing Charters by Lagooner Fishing Guides

Thursday August 25, 2016

Canaveral Florida host some of the best charter Captains in the world and Lagooner Fishing Guide Captain Richard Bradley is right in amongst them. If the weather’s nice and the seas are fair you’ll experience the Atlantic Ocean on Florida’s East Coast offering awesome King Mackerel action, seasonal mahi mahi or dorado, cobia, sailfish, grouper, snapper and tripletail like the ones displayed above this summer. There are days when the fish are biting so hard that you literally can’t cast a second rod because the first one’s already hooked up and running around the boat at breakneck speeds!

“Fishing offshore near Cape Canaveral between Daytona Beach and Fort Pierce, Florida has so much variety for anglers.” Explains Captain Richard Bradley “If you are vacationing in Orlando or near it’s theme parks Disney, Universal Studios, you’ll not want to miss a day of action on the water catching fish and soaking up Florida’s sunshine.”

Picking an offshore fishing destination is easy in Central Florida as Port Canaveral is absolutely the best bet with the large variety of fish and habitat. Choosing a Charter Fishing Captain is just as easy too… Captain Richard Bradley has over 40 years fishing experience out of Port Canaveral and Cocoa Beach area and is well qualified and full time. “If you’re choosing a Charter Captain, look for a full time, licensed and insured Captain” explains Captain Gina. “We see so many part time illegal fishing guides in our area that have no clue about how to take care of their customers and make a difference in a fishing day. Safety and success are our main concern and it’s not just about making a boat payment or extra money for us, it’s about making a lively hood and doing it RIGHT.” Our website reflects what we believe so take a look around and you’ll see quality in everything we do.

Offshore of Cocoa Beach and Port Canaveral’s beaches are countless reefs, rocks, ridges and wrecks for the fishing enthusiast to explore. Hiring an experienced and knowledgeable local fishing guide offers the best opportunity for anglers to hookup with many of the local species of saltwater fish like the powerful Jack Crevelle or aerobatic tarpon. Venturing further offshore offers anglers deeper water species like Snapper, Grouper, Sailfish and Dolphin. Simply ask your Charter Fishing Captain what’s biting and follow his lead to the best bite in Central Florida’s offshore waters.

Hello, I’m Captain Gina Bradley from East Central Florida in Cocoa Beach. My husband, Captain Richard takes me offshore fishing all summer long for hard fighting and reel striping action that really makes for a wonderful day for this outdoors girl.

You really can’t go wrong on Florida’s east coast during the summer. The temperatures on the ocean are cooler than inshore and the fishing is fabulous and fast paced on most days. Captain Richard is an expert and knows how to put his anglers on the fish and you’ll enjoy his enthusiasm and love for the outdoors.

Call me today and set up your offshore fishing trip in Central Florida Today!

Captain Gina Bradley Lagooner Booking Agent / 321-868-4953

It’s Summer….! Offshore fishing in the summer in this part of Florida can be the most fun a family or serious anglers can have. Whether you’re looking to sightfish for cobia or live bait for king mackerel and other offshore game fish, it’s usually calm and hot in the summer months out of Port Canaveral. Typically summer fishing tends to slow down in the mid summer in the lagoons and gets really good offshore so it’s a great time to change the scene and head out to the deep blue abyss for some hard fighting action.

Reviewed by Captain Richard Bradley on Last modified: January 19 2016 19:26:13.

Published by: Captain Richard Bradley of Lagooner Fishing Guides

Lagooner Fishing Guides Cocoa Beach’s premier saltwater fishing guide with over 25 years of charter fishing experience in his native waters. Telephone: 321-868-4953 Website: http://www.lagooner.com

Currencies Accepted USD in the form of Cash, Credit Card, Debit Card

FaceBook | Google+ | Twitter | YouTube

home index

Visit link:

Offshore Fishing Charters in Florida

Posted in Offshore | Comments Off on Offshore Fishing Charters in Florida

Astronauts Taking Spacewalk to Install New Space Station …

Posted: August 21, 2016 at 11:08 am

First-time flier Kate Rubins and veteran spacewalker Jeff Williams will venture outside the International Space Station this morning (Aug. 19) to install a massive, crucial piece of machinery:a vital new docking port that will allow private space taxis to link up with the station on future missions.

The spacewalk is slated to begin at 8:05 a.m. EDT (1205 GMT), NASA officials said during a news briefing. You can watch the spacewalk live here on Space.com, courtesy of NASA TV.

This spacewalk marks a first for Rubins, and the fourth of Williams’ career. The two astronauts plan to spend about 6.5 hours outside the station installing this new heavy piece of machinery, known as an International Docking Adapter (IDA), which arrived at the station on July 20 aboard a SpaceX Dragon cargo spacecraft. [The Most Memorable Spacewalks in History (Photo Gallery)]

The IDA being installed today is the first of two devices that will be attached to the space station as part of a new international standard that allows a variety of vehicles to dock with the orbiting lab independently rather than being grappled with the station’s robotic arm.

Williams, Expedition 48’s commander, will head out first, and Rubins will hand off a bag of IDA installation tools before stepping outside the station.

“This EVA [spacewalk] that we are going to be doing on Friday represents a very significant milestone on the path to establishing a commercial crew capability on board the ISS,” Kenny Todd, the station’s mission operations integration manager, said at the news briefing Monday (Aug. 15). “We’re very excited to put this piece of hardware on the front of the station.”

Astronauts Kate Rubins and Jeff Williams are all set to venture outside the International Space Station (ISS) tomorrow (Aug. 19) to install the first International Docking Adapter. This addition to the ISS will allow future private space vehicles to hook up to the station.

Multiple previous spacewalks paved the way for today’s installation. During four EVAs (extravehicular activity) performed earlier this year, and in 2015, astronauts routed cables for the docking adapter and installed a control panel, among other maintenance tasks.

On Wednesday (Aug. 17), the ground robotics team successfully removed the IDA from the Dragon spacecraft’s trunk using the space station’s robotic arm, and positioned it 3 feet (0.9 meters) from the front of the port. This morning, prior to the start of the spacewalk, the ground crew used the arm to move the IDA closer to the port, so that it would be ready to be installed by Williams and Rubins.

The International Docking Adapter as seen before its launch to the International Space Station.

The new IDA, which measures 7.8 feet (2.4 m) in diameter, will allow for larger crews to launch from all different places around Earth and dock with the space station automatically. Boeing and SpaceX have contracts with NASA to send astronauts to the space station in 2017.

If all goes according to plan, the spacewalkers will complete some additional tasks after hooking up the IDA. Williams and Rubins will install thermal covers, as well as set up mirrors that will allow future space taxis to autonomously navigate, align and connect with the space station properly. The team will also route some additional cables for the second docking adapter, which is expected to fly up to the space station next year.

The International Space Station is the largest structure in space ever built by humans. Let’s see how much you know about the basics of this science laboratory in the sky.

0 of 10 questions complete

Cosmic Quiz: Do You Know the International Space Station?

The International Space Station is the largest structure in space ever built by humans. Let’s see how much you know about the basics of this science laboratory in the sky.

On Sept. 1, a second EVA will be conducted to perform more work on the IDA, during which astronauts will retract one of the station’s thermal radiators.

Williams and Rubins are part of a six-member space station crew. They arrived at the station on July 9, and are joined by Japanese astronaut Takuya Onishi and Russian cosmonauts Oleg Skripochka, Alexey Ovchinin and Anatoly Ivanishin.

Visit Space.com later today for complete coverage of the spacewalk and a final wrap-up of the day’s orbital activities.

Follow Samantha Mathewson @Sam_Ashley13. Follow us @Spacedotcom, Facebook and Google+. Original article on Space.com.

Original post:
Astronauts Taking Spacewalk to Install New Space Station …

Posted in Space Station | Comments Off on Astronauts Taking Spacewalk to Install New Space Station …

How to Use MDMA (Molly ) – How to Use Psychedelics

Posted: August 10, 2016 at 9:17 pm

MDMA is a truly remarkable medicine for working with difficult emotional experiences. The clinical results have far exceeded other interventions for a range of uses (see the research section at the bottom of this page).

MDMA is a synthetic psychedelic, first developed by the pharmaceutical company Merck in 1912. It has been widely studied since then, particularly for psychotherapeutic uses. With the rate of academic research growing rapidly, it is likely that MDMA will become FDA approved for therapeutic use within the next few years, and MAPS.org is focused on moving it through the approval process. MDMA is being widely tested for post-traumatic stress, with results that surpass any other existing treatment method.

MDMA is a particularly appealing psychedelic for therapists and researchers because the subjective mental experience feels fairly stable, while creating a dramatic increase in emotional openness and a reduction in fear and anxiety.

Before you begin, be sure to read our safety section and see the special safety considerations for MDMA at the bottom of this page.

Because MDMA has anti-anxiety and anti-fear effects, it is generally considered safe to use a full dose your first time and each time you use MDMA (generally 75mg – 125mg depending on the individual). It is important to measure the dose carefully. Milligram-precision scales cost about 20 dollars (heres an Amazon search for milligram scale).

Some therapy protocols add a booster dose of about 60mg of MDMA 2-3 hours after the first dose to extend the period of therapeutic effects and provide more time for deep exploration.

MDMA will typically be in the form of a powder, pill, or crystal. Again, be sure that you are receiving pure MDMA, not mixed with other drugs or stimulants like caffeine. ‘Molly’ is another term for pure MDMA, distinguished from ‘Ecstasy’ which often contains MDMA but is not pure MDMA. If the MDMA is in pill form, youll have to be confident of the reported dosage, as fillers are added to create a pill and weighing the pill will not indicate the MDMA content. As always, do not take any MDMA if you are unsure of quantity or purity.

Once the MDMA has worn off, be sure that you drink lots of water and get a long peaceful sleep at night. MDMA can be mentally tiring and you need to rejuvenate.

Most people find that they have an afterglow from their MDMA experience that can last days or weeks, improving their mood and outlook and keeping them very open to others.

On the other hand, some people feel mentally drained by MDMA and have a foggy headed feeling for a day or two afterwards. Others will feel emotionally drained, and have a depressed mood for up to a week after the experience. Sometimes, these feelings begin two days after the experience, but not the day after. To combat this, some people who feel sensitive to that after-effect will take 5-HTP or L-Tryptophan (both are common supplements available from any source) for a few days after MDMA in an attempt to restore their serotonin levels. People who do feel drained after an MDMA session generally report that precise the MDMA dose can affect how they feel afterwards. Too much may leave them more drained than necessary. This is another reason to start with a modest, precisely measured dose to begin.

Nearly everyone, no matter how they feel the following week, finds that the thoughts, feelings, and emotional release that they experience on MDMA persists afterwards. In particular, any realizations that they had during the experiences tend to prove real and lasting.

Most remarkably, painful emotional associations with life experiences — traumas, breakups, divorces, etc — are dramatically reduced if that issue has been explored during the experience. You will find that when you think about that same painful experience after exploring it on MDMA, you will not have the same flood of emotional pain and tension that you would have had beforehand. The memory will be intact but the emotional strings will be looser.

Even for extreme emotional trauma, this holds true. In a recent research study for patients with PTSD, 83% of patients experienced reduced symptoms after just 3 MDMA sessions combined with therapy, vs. only 25% of patients who had therapy alone. Quite simple, MDMA is the most effective treatment for PTSD ever developed. Compare this level of success to traditional anti-depressants which have strong side effects and are dosed every day for years at a time (for a total of hundreds or thousands of doses) and which have very low rates of effectiveness, often just slightly above placebo.

In addition to our standard safety suggestions, there are three particularly important precautions for MDMA use:

Psychedelics have been misunderstood and misrepresented for decades. That’s changing. Please help us share safe, responsible information on using psychedelics by sending this page to friends, and posting to Facebook, Twitter, and Google:

View original post here:

How to Use MDMA (Molly ) – How to Use Psychedelics

Posted in Psychedelics | Comments Off on How to Use MDMA (Molly ) – How to Use Psychedelics

Jitsi – Mensajera instantnea segura de texto, audio y …

Posted: at 9:07 pm

Pgina de inicio

Requisitos del sistema

Versin utilizada en esta gua

ltima revisin de este captulo

Licencia

Lo que usted obtiene:

GNU Linux, Mac OS, Microsoft Windows y otros programas compatibles.:

Jitsi est disponible para GNU Linux y Mac OS, as como para MS Windows (y prximamente para Android OS). A continuacin se recomiendan otros programas con los que Jitsi se puede comunicar usando el cifrado independiente OTR o ZRTP:

Para mensajes de texto: Pidgin (MS Windows y GNU Linux), Miranda (MS Windows), Adium (Mac OS X), ChatSecure (Android OS y iOS, conocido anteriormente como Gibberbot).

Para llamadas de voz: CSipSimple (Android OS), Linphone (GNU Linux, MS Windows, Mac OS X, Android OS, iOS y otros).

1.1 Cosas que debera saber acerca de esta herramienta antes de comenzar

Jitsi es compatible con diferentes tipos de cuentas y protocolos de comunicacin y, por lo tanto, puede comunicarse con contactos que utilicen otros programas. Algunos de esos programas ofrecen funciones similares para mejorar la seguridad de su comunicacin (como los programas mencionados en la seccin anterior), y soportan el cifrado independiente de texto y voz (OTR y ZRTP). Otros programas podran no tener implementadas estas funciones, especialmente los propios (por ejemplo, el chat de Facebook o Google Talk). Sin embargo, con Jitsi podr comunicarse de todas formas con contactos que utilicen dichos programas propios, slo que sin los beneficios adicionales de las funciones de seguridad de Jitsi.

Sin importar si se comunica mediante texto, voz o vdeo, los proveedores de servicios como Facebook Chat, Google Talk, Yahoo! Messenger, Skype o Viber tienen acceso a sus sesiones de comunicacin y pueden ofrecer el acceso a terceros, tales como corporaciones o gobiernos. Jitsi le permite comunicarse de manera segura y privada usando sus cuentas existentes con la ayuda de un cifrado adicional. Esto hace que el contenido de sus comunicaciones sea inaccesible para los proveedores de cuentas y posibles terceros. Para poder proteger sus sesiones de chat y conversaciones privadas, Jitsi utiliza mtodos criptogrficos, inclusive Off-the-Record (OTR) para conversaciones de texto, y ZRTP/SRTP para llamadas de voz.

Otra diferencia a notar entre Jitsi y programas como Skype es que Jitsi permite que los usuarios sigan usando sus cuentas existentes con un proveedor de servicio distinto, independiente de los desarrolladores del programa. Esto tambin significa que necesita configurar una cuenta antes de poder utilizar Jitsi.

Nota: Jitsi utiliza el lenguaje de programacin Java, de forma que el programa Java debe estar instalado en el equipo para que funcione. Se sabe que Oracle Java tiene varias vulnerabilidades de seguridad que pueden permitir que usuarios remotos tomen control del equipo e instalen spyware para acceder o controlar todos sus datos y comunicaciones. Se recomienda ampliamente que minimice el nmero de programas que tienen permitido utilizar Java en su equipo. Mire cmo desactivar complementos asociados con Java en Firefox y consulte los pasos para deshabilitar Java en todos los navegadores del equipo. Sin embargo, como ver ms adelante en este captulo, a pesar del uso de Java, hay una serie de beneficios de seguridad al utilizar Jitsi.

Read more here:
Jitsi – Mensajera instantnea segura de texto, audio y …

Posted in Jitsi | Comments Off on Jitsi – Mensajera instantnea segura de texto, audio y …

How to Safely Use LSD – How to Use Psychedelics

Posted: July 16, 2016 at 11:13 pm

LSD is the most widely studied psychedelic, with hundreds of published research papers (see below). An LSD experience is similar in many ways to psilocybin mushrooms, but often individuals feel like they are better able to direct and control the experience.

LSD studies have shown success in treating depression, anxiety, smoking cessation, and many other psychological conditions. LSD consistently produces powerful long-term improvements in these conditions, even with just a single dose.

Before you begin, be sure to read our safety section and see the special safety considerations for LSD at the bottom of this page.

LSD is a powerful chemical and taking the correct dose is essential. Because LSD is active at very, very small quantities and because it is typically delivered on small pieces of paper, it is difficult to independently assess the dose (this issue is less of a problem with mushrooms or MDMA). Taking too much LSD can lead to feelings of dissociation and alienation.

Be sure that you know the dose that you are taking. A single dose or tab of LSD can vary widely in strength, so make sure you know the quantity in micrograms. A 100ug dose is a good starting point if you have never taken LSD before and should provide a calm and opening experience. If you are interested in deeper psychological work or spiritual exploration, and have a lot of experience at lower does, you may decide to move up to 400 or 500ug, but only do so if you are very comfortable with lower doses. Do not use LSD unless you are very confident of the quality and dose that you have. Its best to use a source that someone you know has also used and can vouch for.

LSD will typically be delivered on small pieces of paper that the LSD is diffused onto. It may also be provided in liquid or pill form, or even diffused into a sugar cube.

Typically, people feel very free and open in the days following an LSD experience. Remember that you need at least 12 hours before you try to sleep, so if you begin too late in the day, you may have some trouble falling asleep and could be a little tired the next day.

Most people find that they have an afterglow from their LSD experience that can last days or weeks, improving their mood and outlook and keeping them very open to others. Ideas and issues that you explored during the experience will have a new clarity too them. Emotionally difficult topics, memories, and experiences are likely to feel much safer and will bring up less fear when you remember them. You are likely to feel better able to tackle challenging emotional experiences in your life.

LSD has been shown in many research settings to dramatically reduce anxiety, depression, and other psychological challenges with just a single dose. However, you may wish to repeat the experience a few times to further explore and address any emotional and psychological issues that you are working with.

In addition to our standard safety guidelines, there are two particularly important precautions for LSD use:

Psychedelics have been misunderstood and misrepresented for decades. That’s changing. Please help us share safe, responsible information on using psychedelics by sending this page to friends, and posting to Facebook, Twitter, and Google:

Read more:

How to Safely Use LSD – How to Use Psychedelics

Posted in Psychedelics | Comments Off on How to Safely Use LSD – How to Use Psychedelics

Intro to Artificial Intelligence Course and Training Online …

Posted: July 5, 2016 at 11:42 pm

Featured Celebrate our 5th birthday with a 55% discount! Enroll through this link by 7/10/16 & the discount will automatically apply.

Watch Video

Artificial Intelligence (AI) is a field that has a long history but is still constantly and actively growing and changing. In this course, youll learn the basics of modern AI as well as some of the representative applications of AI. Along the way, we also hope to excite you about the numerous applications and huge possibilities in the field of AI, which continues to expand human capability beyond our imagination.

Note: Parts of this course are featured in the Machine Learning Engineer Nanodegree and the Data Analyst Nanodegree programs. If you are interested in AI, be sure to check out those programs as well!

Artificial Intelligence (AI) technology is increasingly prevalent in our everyday lives. It has uses in a variety of industries from gaming, journalism/media, to finance, as well as in the state-of-the-art research fields from robotics, medical diagnosis, and quantum science. In this course youll learn the basics and applications of AI, including: machine learning, probabilistic reasoning, robotics, computer vision, and natural language processing.

Some of the topics in Introduction to Artificial Intelligence will build on probability theory and linear algebra. You should have understanding of probability theory comparable to that covered in our Intro to Statistics course.

See the Technology Requirements for using Udacity.

Peter Norvig is Director of Research at Google Inc. He is also a Fellow of the American Association for Artificial Intelligence and the Association for Computing Machinery. Norvig is co-author of the popular textbook Artificial Intelligence: A Modern Approach. Prior to joining Google he was the head of the Computation Sciences Division at NASA Ames Research Center.

Sebastian Thrun is a Research Professor of Computer Science at Stanford University, a Google Fellow, a member of the National Academy of Engineering and the German Academy of Sciences. Thrun is best known for his research in robotics and machine learning, specifically his work with self-driving cars.

This class is self paced. You can begin whenever you like and then follow your own pace. Its a good idea to set goals for yourself to make sure you stick with the course.

This class will always be available!

Take a look at the Class Summary, What Should I Know, and What Will I Learn sections above. If you want to know more, just enroll in the course and start exploring.

Yes! The point is for you to learn what YOU need (or want) to learn. If you already know something, feel free to skip ahead. If you ever find that youre confused, you can always go back and watch something that you skipped.

Its completely free! If youre feeling generous, we would love to have you contribute your thoughts, questions, and answers to the course discussion forum.

Collaboration is a great way to learn. You should do it! The key is to use collaboration as a way to enhance learning, not as a way of sharing answers without understanding them.

Udacity classes are a little different from traditional courses. We intersperse our video segments with interactive questions. There are many reasons for including these questions: to get you thinking, to check your understanding, for fun, etc… But really, they are there to help you learn. They are NOT there to evaluate your intelligence, so try not to let them stress you out.

Learn actively! You will retain more of what you learn if you take notes, draw diagrams, make notecards, and actively try to make sense of the material.

Nanodegree is a trademark of Udacity 20112016 Udacity, Inc.

See more here:

Intro to Artificial Intelligence Course and Training Online …

Posted in Artificial Intelligence | Comments Off on Intro to Artificial Intelligence Course and Training Online …

Famous Users of Psychedelics – How to Use Psychedelics for …

Posted: July 3, 2016 at 6:41 pm

Psychedelics have been used by many of the most creative and successful individuals in our society. Because of the stigma surrounding psychedelics, only a small percentage of these people have spoken publicly about their experiences. Here are a few who have. Right now, this list is just white men! We’d love to feature some well-known people of color and women– please let us know if you have any suggestions.

Steve Jobs and his Apple co-Founder Steve Wozniak took LSD many times at the beginning of their career. Their experiences are discussed in Walter Isaacson’s biography of Steve Jobs.

“Taking LSD was a profound experience, one of the most important things in my life. LSD shows you that there’s another side to the coin, and you cant remember it when it wears off, but you know it. It reinforced my sense of what was importantcreating great things instead of making money, putting things back into the stream of history and of human consciousness as much as I could.”

Steve Jobs Founder, Apple

Susan Sarandon discussed ayahuasca and mushrooms in an interview with the Daily Beast.

“Ive done Ayahuasca and Ive done mushrooms and things like that. But I like those drugs in the outdoorsIm not a city-tripper… I like doing it in the Grand Canyon, or in the woods. You want to be prepared and not have responsibilities. It does remind you of your space in the universeyour place in the universeand reframe things for you. I think you can have some very profound experiences.”

Susan Sarandon Actor

Frances McDormand described her experiences with LSD and psychedelic mushrooms in a 2014 interview with the Daily Beast.

“I really, really enjoyed LSD. And I really enjoyed mushrooms very much. Its unfortunate, I think, that drugs were not handled properly. Politically, theyve been used to separate the economic classes. Thankfully, its all getting fixed now with the marijuana laws. But with LSD, because it was countercultural, and because it was used as an experimental drug, it was not marketed properly. It if had been marketed properly, we would have it…. We needed a PR person for that LSD! It was very profound. Very profound.”

Frances McDormand Actor

Tim Ferriss is a multi-bestselling author of the Four-Hour Workweek and the Four-Hour Body. He has spoken repeatedly about his use of psychedelics and his advice about what he considers a safe and productive approach.

“The billionaires I know, almost without exception, use hallucinogens on a regular basis,” Ferriss said. “[They’re] trying to be very disruptive and look at the problems in the world … and ask completely new questions.” – Tim Ferris, CNN.com

In this video he addresses the subject in depth:

Cary Grant was used LSD with his therapist many times and was an advocate. Vanity Fair wrote about his experiences in detail in this article from 2010.

“The Curious Story Behind the New Cary Grant headlined the September 1, 1959, issue of Look magazine, and inside was a glowing account of how, because of LSD therapy, “at last, I am close to happiness.” He later explained that “I wanted to rid myself of all my hypocrisies. I wanted to work through the events of my childhood, my relationship with my parents and my former wives. I did not want to spend years in analysis.”

Vanity Fair

Kary Mullis won the Nobel Prize in Chemistry in for dramatically improving the technique of polymerase chain reaction (PCR), which is an essential tool of modern biology research. Albert Hofmann, the inventor of LSD, was told by Kary that LSD had helped him develop his PCR invention (Wired, 2008).

“Back in the 1960s and early ’70s I took plenty of LSD. A lot of people were doing that in Berkeley back then. And I found it to be a mind-opening experience. It was certainly much more important than any courses I ever took.”

Kary Mullis California Monthly, 1994

“What if I had not taken LSD ever; would I have still invented PCR?” He replied, “I don’t know. I doubt it. I seriously doubt it.”

Kary Mullis BBC Horizon Interview, 1997

Psychedelics have been misunderstood and misrepresented for decades. That’s changing. Please help us share safe, responsible information on using psychedelics by sending this page to friends, and posting to Facebook, Twitter, and Google:

Read this article:

Famous Users of Psychedelics – How to Use Psychedelics for …

Posted in Psychedelics | Comments Off on Famous Users of Psychedelics – How to Use Psychedelics for …