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New Fuel Reducing Ship Coating Could Save the U.S. Navy Millions of Dollars

Thanks to work that’s being sponsored by The Office of Naval Research (ONR) the U.S. Navy could be about to save millions of dollars on their fuel costs. It comes in the form of an “omniphobic” coating that’s being developed currently by Dr. Anish Tuteja, an associate professor of materials science and engineering at the University of Michigan. 

The coating can repel oil, water, alcohol, and even peanut butter and could be the answer to improve operational efficiency across the whole naval fleet. What’s of most interest to the U.S. Navy is how the special coating can reduce friction drag when the ships are moving through the water. 


“A significant percentage of a ship’s fuel consumption [up to 80 percent at lower speeds and 40-50 percent at higher speeds] goes toward maintaining its speed and overcoming friction drag,” said Dr. Ki-Han Kim, a program officer in ONR’s Sea Warfare and Weapons Department. “If we could find a way to drastically reduce friction drag, vessels would consume less fuel or battery power, and enjoy a greater range of operations.” 

And that’s where Tuteja’s omniphobic coating comes in. Just imagine two ships are sailing along at the same speed. One deals with friction drag as the other is covered in a special coating that allows the water to bend and slide off the hull. The vessel that’s coated will use less fuel as it won’t have as much water resistance to battle with while maintaining speed. 

This isn’t the first repellent coating to ever exist, but many others just don’t live up to the job. For example, when water is placed in a pan coated with Teflon, it will form into little droplets and roll off the pan. Cooking oil, however, will spread everywhere. “Researchers may take a very durable polymer matrix and a very repellent filler and mix them,” says Tuteja. “But this doesn’t necessarily yield a durable, repellent coating. Different polymers and fillers have different miscibilities.”

Mathew Boban, a graduate student research assistant at the University of Michigan, pours hexadecane oil onto a glass slide covered with an omniphobic coating. The petroleum-based, highly viscous oil slides easily off the glass. The Office of Naval Research is sponsoring efforts to see how omniphobic coatings might reduce friction drag–resistance created by the movement of a hull through water–on ships, submarines, and unmanned underwater vessels. CREDIT – Robert Coelius, Michigan Engineering Communications & Marketing


Tuteja and his team engineered the omniphobic coating by first studying a huge database of chemical substances to predict how any two would behave if mixed, based on their molecular properties. Finally, after analyzing hundreds of different combinations, they found the mix they were looking for. The rubber-like combination they discovered can be dipped, brushed, sprayed or spin-coated onto a number of different surfaces. It binds tightly and has the ability to withstand both denting and scratching. And, the coating is optically clear.

As well as being used to reduce friction drag, Tuteja also sees the coating being used for protecting expensive equipment such as antennas, radars, and sensors from adverse weather. ONR is also sponsoring other types of coating research that will help prevent ice from forming on ships that have to operate in the colder climates of the world. 


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New NASA Mission to Focus on Interstellar Space Particles of the Outer Solar System

A new, upcoming NASA mission’s been selected that will take a deep look into and map the many tiny particles streaming to Earth from interstellar space. It’s called the Interstellar Mapping and Acceleration Probe (IMAP) mission and it’s due to launch in 2024.

The IMAP mission will help researchers gain a deeper understanding of the boundary of the heliosphere. This is where a constant flow of particles emitted from our Sun collides with other galactical material. As a result, it limits how much harmful cosmic radiation gets into the heliosphere. Those particles that do make it through will be scrutinized by IMAP.


“This boundary is where our Sun does a great deal to protect us,” explained Dennis Andrucyk, deputy associate administrator for NASA’s Science Mission Directorate in Washington. “IMAP is critical to broadening our understanding of how this ‘cosmic filter’ works. The implications of this research could reach well beyond the consideration of Earthly impacts as we look to send humans into deep space.”

The team is also looking to learn more about how cosmic rays are generated within the heliosphere as part of their mission. To do this they will position the spacecraft around one million miles or so from the Earth at an angle pointing towards the Sun. This allows the probe to monitor the interactions taking place between the solar wind and the interstellar medium that’s found in the outer solar system. 


This is the fifth mission of its kind to add to the NASA Solar Terrestrial Probes (STP) Program. Others included in the portfolio are the Solar Terrestrial Relations Observatory (STEREO) mission; the Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics (TIMED) mission; the Magnetospheric Multiscale (MMS) mission; and the solar remote sensing mission Hinode.

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MIT Researchers Develop New Way to Communicate With Implants Within the Body

Researchers from MIT have been working alongside scientists from Brigham and Women’s Hospital to develop an innovative way to communicate with implants buried deep inside the body. Powered by radio frequency waves, these implants could be used to treat disease, monitor conditions, and deliver drugs to various parts of the body all through using light or electricity to stimulate the brain.

When tested in animals, it was found that the waves were able to power devices that were situated 10cm deep in tissue, from as far away as one meter. “Even though these tiny implantable devices have no batteries, we can now communicate with them from a distance outside the body. This opens up entirely new types of medical applications,” says Fadel Adib, senior author of the paper and an assistant in MIT’s Media Lab. 


As there’s no need for a battery, these devices can be minuscule. In this particular study, the prototype the researchers used was about the size of a grain of rice. However, they’re quite adamant it could be made even smaller. Implantable medical devices could be the way forward for monitoring, diagnosing, and treating patients for a multitude of diseases.

Giovanni Traverso is an assistant professor at Brigham and Women’s Hospital, Harvard Medical School, a research affiliate at MIT’s Koch Institute for Integrative Cancer Research, and another author of the paper. In his lab, they are currently working on different ingestible systems that could be used to monitor a patient’s vital signs or deliver drugs when they need it most.

Those implants which deliver an electrical pulse in the brain are used in a technique referred to as deep brain stimulation. Currently, those devices are powered by pacemaker-like implants, but thanks to Traverso and colleagues that could soon be a thing of the past if wireless brain implants are used.


Until now, researchers have found it difficult to develop battery-free devices, meaning they’ve always been big and bulky. But to overcome that the researchers came up with a new system called “In Vivo Networking”, or IVN for short. This system depends on a number of antennas to emit different frequency radio waves. As the radio waves travel they combine with one another in various ways. At certain points where the waves overlap they’re capable of producing enough energy to power an implanted sensor.

“We chose frequencies that are slightly different from each other, and in doing so, we know that at some point in time these are going to reach their highs at the same time,” says Adib. “When they reach their highs at the same time, they are able to overcome the energy threshold needed to power the device.”

The researchers don’t even need to know where in the body the sensor is located for the system to work. Because the power is transmitted over a large area, multiple devices can be powered simultaneously. Whenever the sensors get a burst of power, at the same time, they get a signal telling them to send that information back to the antenna. The researchers say that this signal could also be used to initiate the release of a drug, a pulse or light, or a burst of electricity. 


When sensors are buried deep within the body, around 10cms, the researchers found that they could send power from as far away as one meter when carrying out a test on pigs. If the sensor was placed just under the skin’s surface it could be powered from as far away as 38 meters.  The next step for the team is to make the delivery of power even more efficient and effective over greater distances.    

Image Source: 3D Human body in a loop.

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HPE0-S37: The Verified Way to Pass the Exam

The HPE0-S37 certification exam assesses your basic knowledge of the most popular server solutions and innovations of HPE. Your ability to describe infrastructure management solutions on the clouds and on-site, as well as to understand the tool management system used to prepare a ProLiant system deployment will also be tested. The ideal applicants for this test are those who would like to get the HPE ATP Server Solutions certification or those who have already purchased previous versions of the certificate. Any individual can take the exam, however, a minimum 1 year of experience with HPE server solutions and server technologies is recommended. It is also important for candidates to have knowledge of standard server technology training, practice, and industry experience.


General Overview of the HPE0-S37 Exam

This HPE exam contains 60 multiple-choice questions which you are required to complete within 1 hour 30 minutes. The passing score is 70 percent.

The exam objectives help you know the areas to focus on during your exam preparation process. Here are the objectives of theHPE0-S37test:

  • Understanding core server technologies and architectures
  • Understanding features, functions, and benefits of HPE server solutions and products
  • Positioning HPE server solutions and analyzing the server market to customers
  • Planning and developing HPE server solutions

Tips for Passing the HPE0-S37 Exam

This exam will help you master HPE solutions and you need to prepare for it in the best way possible. Here are tips for passing this certification exam:

  • Take your training seriously

Passing this exam is dependent on how well you master the concepts that are taught to you. Because the concepts are unique to HPE servers and solutions, you need to be able to train in order for you to capture the unique specifications of their solutions in your mind. This means that you cannot skip any stage in your training. You need to ensure you train on everything that is listed in your coursework before you start preparing for the exam.

  • Go through all the course materials

After your training is complete, you need to look for all materials in your course and ensure that you go through them. These materials will give you a blueprint of the exam and help you familiarize yourself with the questions that will be asked in terms of their design and format. You will also get the exam objectives which will help you structure your study to focus on areas that are relevant to the test. When you know what to expect, you are likely to prepare well for it and that is the idea.

  • The questions are experience based

HPE exams are experience based that means most of the questions you will be dealing with will require you to use your work experience to come up with solutions to the problems you encounter in the exam. Every time you try answering practice questions, try to visualize yourself in the work environment and choose an answer that reflects what you would do if that was the case.


  • Read the HPE Preparation Guide

HPE offers the candidates a preparation guide to give them a detailed approach in preparing for their exams. You need to get this guide and read it carefully and follow the preparation steps that have been laid down. The exam content comes from HPE and it is wise for you to follow their recommendations because they are responsible for the questions you will encounter. This will make you comfortable when you approach the test as you have an idea of what is expected of you.

  • Constantly check the HPE Press

If you are preparing for an exam offered by HPE, you need to visit the HPE Press for you to get details of the exam. You will be comfortable using the study materials and the HPE books listed there because they come from a source you can trust. Any notifications concerning changes in the exam can also be found here. This is the place you can get any concerns about the exam addressed and feel confident when you are about to take it.

  • Take advantage of exam simulators

Exam simulators should be your best friend at this point. This is the only way you can determine your readiness for the exam. The questions in the exam are more alike to the questions in the actual exam and you will be practicing for the exam in the best way possible. When you look at it closely, the score you get from practice exams comes close to the score you attain in the actual exam hence you need to take it seriously. The difference in the margin occurs when you go back and polish on the areas that you did not answer correctly. Practice exams also enable you to get used to the exam environment so that you will be comfortable sitting for the exam when the time comes. Another thing is that you will be able to manage your time well by gauging how well you did in terms of answering the questions within the set time. The best practice tests are from the website Prepaway: https://www.prepaway.com/hpe0-s37-exam.html

  • Ask for help from experts

You may experience challenges when studying and that should not limit your potential for passing the exam. There are accredited training institutions with instructors that will help you navigate those challenges and you need to take advantage of that. Going for the test with so many uncertainties will not help you at all. You will only be raising your anxiety levels and even the little content that has registered in your brain will begin to disappear. You need confidence for you to be your best self and do the exam to the best of your ability. Get your concerns addressed before you take the exam to increase your passing chances.

Conclusion

HPE has study materials for you to help you prepare for the exam and you should check their website to ensure you get the right materials. Develop a system that works for you and latch on to the recommendations in the HPE Prep Guidebook so that you do it right.


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NASA’s Curiosity Rover Discovers New Evidence to Suggest Life on Mars Did Once Exist

A new piece of evidence has been discovered by NASA’s Curiosity rover that suggests there was once life on the Red Planet. On top of that, new evidence has emerged that relates to the search for current alien life. It may not be life itself, but these findings are a significant discovery nonetheless and are a good sign for future Mars missions.

“With these new findings, Mars is telling us to stay the course and keep searching for evidence of life,” says Thomas Zurbuchen, associate administrator for the Science Mission Directorate at NASA Headquarters. “I’m confident that our ongoing and planned missions will unlock even more breathtaking discoveries on the Red Planet.”


Curiosity is of yet to determine the source of the organic molecules. But even without this knowledge, it will present clues as to the planetary conditions in ancient times. While there’s no evidence to suggest life on Mars exists now, there is strong evidence that says it did in the past including a water lake that’s situated inside Gale Crater.

“The Martian surface is exposed to radiation from space. Both radiation and harsh chemicals break down organic matter,” explains Jen Eigenbrode of NASA’s Goddard Space Flight Center and lead author of the two scientific papers. “Finding ancient organic molecules in the top five centimeters of rock that was deposited when Mars may have been habitable, bodes well for us to learn the story of organic molecules on Mars with a future mission that will drill deeper.”


The second paper focused on the discovery of seasonal variations in Mars methane levels over a period of nearly three Mars years (just short of six Earth years). They found that in warm, summer months methane levels are at their peak, while in winter they drop back again. According to Chris Webster of NASA’s Jet Propulsion Laboratory (JPL) and lead author of the second paper, it’s the first time we’ve ever seen anything repeatable like this when it comes to methane, and the only reason we did is that of Curiosity’s longevity.

Rock samples taken from the Martian soil were analyzed by Curiosity’s Sample Analysis at Mars (SAM) instrument suite. The results showed both fragments of sulfur and organic carbon concentrations that are around 100 times greater than that of the surface.

In 2013, organic molecules containing chlorine were detected by SAM. And now, with the discovery of methane, scientists are confident that NASA’s Mars 2020 rover alongside ESA’s (European Space Agency’s) ExoMars rover will find even more organics out there.


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5 Things You Didn’t Know About The Human Psychology

The human mind is absolutely fascinating, and understanding its workings and functions has been, and will remain, a task pursued by many who are interested in its intricate design. 

The way our mind works raises many questions; we do things without knowing we’re doing them, we act in ways that are unusual at times, and we think we know something when we actually don’t. 

In this article, we are going to look at five things we got wrong about human psychology as proved by Science. 

  1. We don’t actually multitask – it’s practically impossible

All these years we’ve been telling people how great of a “multitasker” we are, we’ve been lying to ourselves more than we did to others. The thing is that what we think constitutes as “multitasking” is actually far different from the actual meaning. When we think we are multitasking, what we’re actually doing is context-switching, i.e. switching back-and-forth between one task and another, and not doing them both at the same time. 

What happens in the brain is truly fascinating. When the brain is occupied with one task, the prefrontal cortex is the one that receives the signal from the anterior part of the brain and communicates it to the rest of the brain so that the task is commenced and completed. However, according to a study conducted in Paris entitled Divided Representation of Concurrent Goals in the Human Frontal Lobes, when the brain is given a second task to do, it splits up, and each hemisphere works on its own. This means that instead of being used at its full capacity, the brain had to split its resources and painfully switch back between the first and second task. 

This increased the error rate by 50% and took them twice as long to complete their tasks. The worst instance, however, was when a third task was introduced. According to the study, the volunteers could not handle juggling three tasks at once, and kept forgetting one of their tasks and made three times as many errors as they did while dual-tasking.

This shows that contrary to what we might believe, giving ourselves more than one task to handle at once, is far from being efficient. Think about that the next time you plan on overloading your brain! 

Source: The Mind Unleashed, ‘10 Surprising Facts About How Our Brain Works’


  1. Our brain “rewrites” monotonous speech of boring people

A study conducted by scientists at the University of Glasgow’s Institute of Neuroscience and Psychology. revealed that the moment our brain hears “monotonously-spoken words”, it is immediately triggered to “rewrite” the speech to make it more interesting and expressive. Scientists argue that the brain does this as soon as it senses that we are about to drift away in our thoughts as a result of a boredom. It creates an “inner voice” as a way to “cope” with, and muffle the boring speech. The principal author of the research, Dr. Bo Yao, explains that the brain is very “picky” about the kind of speech it hears:

 “You may think the brain need not produce its own speech while listening to one that is already available. But, apparently, the brain is very picky about the speech it hears. When the brain hears monotonously-spoken direct speech quotations which it expects to be more vivid, the brain simply ‘talks over’ the speech it hears with more vivid speech utterances of its own. By doing so, the brain attempts to optimize the processing of the incoming speech, ensuring more speedy and accurate responses.”

The research, entitled “Brain ‘Talks Over’ Boring Quotes”, involved the scanning of the brains of 18 participants using functional magnetic resonance imaging (fMRI) to detect brain activity while Each participant listened to a number of audio clips of short stories containing direct or indirect speech quotations. Some of the quotations were spoken vividly, and others monotonously. The fMRI results showed changes in the oxygen levels in the blood demonstrated that the activity in certain areas of the brain associated with human speech, i.e. the brain’s auditory cortex, increased when people listened to the direct speech quotes that were spoken monotonously. 

Source: Telegraph.co.uk, ‘Brain rewrites monotonous speech of boring people’ 

3. People can become addicted to anything – good and bad 

The idea that addiction is caused due to the nature of the thing, it being bad like drugs, for instance, is a long-held belief that is the time we address properly. When we talk about addiction, most of the time, we are referring to the usual drugs, alcohol, gambling, etc. But what we don’t talk about, is the reality that people can become addicted to things that do not actually seem “negative” at face value. 

What do we mean by this? Well, what we mean is basically, that people can become addicted to just about anything – good or bad. A person can become addicted to fitness to the point of causing more harm to the body than good. A person can become so addicted to work, that it could destroy his mental well-being and relationships with other people. But, if this is true, which it is, then how exactly does the psychology behind addiction work?

A study conducted by two psychologists in the 1950s, entitled The Neuroscience of Pleasure, shows the results of an experiment carried out by two psychologists on lab mice. In simple words, the two psychologists, James Olds and Peter Milner, implanted a few electrodes on the mice and placed them in cages containing a switch. Every time the mice pressed the switch, an electrical simulator would send their brain a positive stimulus. Quickly, the mice understood that the switch was the reason behind the “feel-good” sensation and so naturally, they started pressing the switch consistently and continuously. In fact, the psychologists recorded up to 7,000 presses an hour and also noticed that the mice were skipping food and water in the process. 


Does this sound familiar? 

Sounds just like what humans do when they’re addicted to something like playing on the Xbox. How many times have we read news about a teenager or even adult, skipping bathroom breaks and meals in order not to “pause the game”. Does that mean that playing video games is bad or will inevitably cause addiction? The answer is no of course! When we are doing something that gives us pleasure or satisfaction, our brains will naturally release dopamine, giving us the same “feel-good” sensation experienced by the lab mice, and so in order to prolong the sensation, we simply repeat the same activities over and over again. So whether we are gambling, eating chocolate, playing video games or hitting the gym – it all comes down to self-control. 

We do what we do out of selfish reasons, to “feel good”, but it is our responsibility to keep ourselves in check and stop ourselves from ending up in a never-ending loop of indulgence. The truth is, anything can become harmful if taken to the extreme. 

Source: Casinos.co, ‘Psychology of Gambling’  

4. Your brain actually wants fewer choices than you might think

This idea has actually been around quite a number of years. Whilst there have been several pieces of research on the topic of “choice”, many usually refer to one particular study that was conducted back in 1995, entitled The Art of Choosing, and it involves jam. Professor Iyengar together with her research assistants set up a booth of samples of Wilkin & Sons jams in a California gourmet market. Every now and then, the team switched between offering a selection of 24 jams to a selection of six jams – and something very interesting was revealed. 

First of all, they found out that, regardless of the number of jams on offer, people tended to taste only two jams. Therefore, the number did not increase with the greater selection of jams available on offer. Secondly, although 60% of customers were attracted to the stand with the 24 jams on display, only 3% of them actually purchased a jar of jam. On the other hand, although 40% of people were drawn to the stand with the smaller assortment of jars, 30% of them actually purchased a jar! 

This experiment thus raised the question of whether having too many choices can actually cause paralysis and indecision, rather than give people the freedom to have more choice. As appealing as it may be to have a variety of selection, Professor Iyengar claimed that “in reality, people might find more and more choice to actually be debilitating.”

Source: New York Times, ‘Too Many Choices: A Problem That Can Paralyze’

5. According to Scientists, it takes 66 days for us to form a habit

Contrary to what many of us have believed all this time, habits are not born but are created by us. In his paper entitled “The Power of Habit,” Charles Duhigg explains how every habit, be it good, bad or insignificant, starts with a psychological pattern called a “habit loop”. 

According to an interview with National Public Radio, Duhigg claimed that there are three steps involved in the “habit loop”. The first step is when there is a trigger that tells your brain to allow you to engage in a particular act of behavior. The second step is the behavior itself taking place and gradually becoming a routine. The third step is the “reward”, i.e. something that your brain likes and helps it remember the ‘habit loop’ in the future. 

Breaking habits once we have formed them is very hard because we are able to do other things without thinking about our habit. We can engage in our habit while simultaneously doing something else. For instance, we can easily start biting our nails while watching a movie, without us even realizing it. According to a study entitled How are habits formed: Modelling habit formation in the real world released in the European Journal of Social Psychology, Phillippa Lally, and her team surveyed 96 people over the span of 12 weeks and determined that the average time it took for the participants to develop a new habit was 66 days. 

This means that a habit is not born out of anywhere in a span of a few days. It takes more than two months to develop a habit. So the next time you try to break a habit, don’t give up after the first week! If developing a habit takes time, then naturally, breaking a habit requires its time as well. If it takes you 66 days to develop a habit, then you can take focus your time and energy for 66 days to break a habit. 

Source: EiteDaily.com, ‘Scientists Say It Only Takes 66 Days To Change Your Life If You’re Strong Enough’


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Understanding the Complexities of the Brain

As humans, we have the ability to alter out behavioral responses based on internal beliefs and external instructions. When tapping your foot in time to music, for example, your brain has to quickly process that incoming sound and then use its internal knowledge to remember how the song goes. 

In a recent study, a group of MIT neuroscientists successfully identified the strategy in which the brain employs to do this. The discovery was made by applying a dynamic systems analysis to learn the logic behind the evolution of activity within large populations of neurons. “The brain can combine internal and external cues to perform novel computations on the fly,” says Mehrdad Jazayeri, senior author of the study and the Robert A. Swanson Career Development Professor of Life Sciences. “What makes this remarkable is that we can make adjustments to our behavior at a much faster time scale that the brain’s hardware can change.” 


Previous studies conducted by Jazayeri and colleagues revealed that the brain initiates the movement by changing the speed at which neural activity patterns evolve. They also found that the speed in which this is adjusted to is controlled by two factors within the brain: external sensory inputs and adjustments of the internal states relating to the corresponding task.

Cognitive flexibility is the ability to quickly adapt to new pieces of information. Neuroscientists are under the impression that this cognitive flexibility occurs within the brain’s higher cortical regions, yet very little is known about how it’s done. In a similar way to how switches and dials are able to change certain outputs on electrical circuits, the MIT team figured that the brain also transforms beliefs and instructions into internal states and inputs that control the way in which neural circuits behave.

To test this theory, the researchers performed a flexible timing task called “ready, set, go”, while recording the neural activity in the frontal cortex. The test involved the animal seeing two visual flashes – a “ready” and a “set” flash. These are separated by intervals of varying time, and sometime after “set”, the animal initiates a “go” movement. The aim for the animal is to initiate the movement that’s the same time or 1.5 times the length of the “ready-set” interval. 


Completing the research enabled Jazayeri and his team to discover how the brain is able to adjust to various inputs and conditions experienced in the frontal cortex in order to flexibly control movement. Another success to come from the study was the development of new mathematical tools in which to analyze large amounts of data extracted from neuron readings. 

The next mission for the researchers is to try and find out which part of the brain is sending the information to the frontal cortex. They would also like to discover what happens in these neurons when they have to learn a particular task quickly. “We haven’t connected all the dots from behavioral flexibility to neurobiological details. But what we have done is to establish an algorithmic understanding based on the mathematics of dynamical systems that serve as a bridge between behavior and neurobiology,” says Jazayeri.


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Top Blogs for Technophobes Who Need Tips

Do you feel like you have been left behind by the constant influx of new technology? For a lot of people, it feels like everybody else is tech savvy except for them. Most of the technology tip sites out there seem to require a base tech knowledge before you can start. Wouldn’t it be great if there was somewhere for non-tech minded people to get information on how to correctly use their latest gadgets? The internet is too vast to make finding these kinds of sites easy, especially for those with an aversion to such things. Fortunately, we have collected some of the best blogs for non-geeks in need of tech help below.


Lifehacker claims to help you “Do everything better”. It is a long-running blog dedicated to software and life hacks, containing tips for using Windows, Mac OS and Linux as well as Android and IOS. It draws from many authors with articles and videos teaching strategies for problem-solving ranging from little time savers to how to unsend that horrible thing you just messaged.

Howtogeek.com describes itself as “dedicated to explaining the “hows” and the “why’s” of today’s technology and news”. The blog is updated throughout the day contributing to a massive archive of tech tips and the in-depth nature of the explanations prove useful for anyone from a geek to a complete noob. The blog contains the usual computer and mobile phone operating systems as well as gaming, office and photography tutorials.

Teknobites.com is a technology news site reporting on software, web apps, and productivity tools. Although it is primarily a news site typing “how to” into the search bar reveals many simple but useful tips and tutorials for the technophobe such as how to increase LCD screen resolution of the Android phone.


Switched on Insurance has its own blog. It contains many hints and tips explained in depth using very straightforward language covering a range of topics such as how to speed up your laptop. The layout of this blog is simple and user-friendly making it ideal for those unfamiliar with using these types of websites.

According to their website, blogtechtips.com is “a website dedicated to improving your skills with learning and using technology”. This is a colorful website containing well-written tech tips covering topics such as creating websites, for repairing gadgets and many how-tos. The articles are all written by the site owner who injects his personality into his articles making it a fun as well as informative read. He uses videos and articles to explain seemingly simple tasks like how to delete a Facebook page.

Armed with the tips available on these websites you will be able to go out and take control of the technology in your life instead of letting it control you.


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Making Everyday Products Smarter Through the Use of Artificial Intelligence 

Twenty-five years ago, artificial intelligence (AI) was still largely a pipe dream for most of us. It was simply something that was talked about in science fiction books and movies. Nowadays, AI is all around us. AI is being used to fulfill customer service roles, enhance manufacturing techniques, and even secure people’s homes. 

Back in 2011, IBM’s Watson became the first ever computer to beat a human player on Jeopardy! But, it’s not really a fair fight when you think about it. “At the time, Watson was connected to a supercomputer the size of a room while the human brain is just a few pounds,” says Jeehwan Kim, the Class ‘47 Career Development Professor and a faculty member of MIT’s Department of Mechanical Engineering and the Department of Materials Science and Engineering. 


“But the ability to replicate a human brain’s ability to learn is incredibly difficult,” says Kim, defending dear Watson. “Machine learning is cognitive computing. Your computer recognizes things without you telling the computer what it’s looking at.” But, machine learning is just one aspect of AI. Smart devices and systems are another examples. In order for any of these devices to work, both the hardware and software much work together. Any radar, cameras, sensors, and light detection all need to be able to effectively feed information back to the computers.

Kim and others at MIT’s Department of Mechanical Engineering are in the process of developing new software that links up to hardware to create intelligent devices. Currently, most neural networks have been developed using the Von Neumann computing method and have been software-based. Kim has been taking a different approach and been using neuromorphic computing methods instead. “Neomorphic computer means portable AI,” says Kim. “So, you build artificial neurons and synapses on a small-scale wafer.”

Instead of using binary signaling to compute information, Kim’s neural network works like an analog device when processing information. The other main difference is the material used to make the artificial synapses. Previously, amorphous materials would be used in neuromorphic chips. The problem with this type of material is that it’s hard to control the ions once voltage has been applied. So instead, Kim and colleagues used a chip made from silicon germanium which allowed them to reduce variability down to just one percent, as well as control the current flowing out of the synapse.

“We envision that if we build up the actual neural network with the material we can actually do handwriting recognition,” says Kim. So far, their neural network has a success rate of 95 percent when asked to identify handwriting samples. “If you have a camera and an algorithm for the handwriting data set connected to our neural network, you can achieve handwriting recognition.” While handwriting recognition may well be the next step for Kim and his team, the possibilities for this kind of technology are endless. It could be used in computers, phones, and even robots to make them all considerably more intelligent. 

As well as making portable products more intelligent there’s also a big push to make homes smarter too, and that’s what Professor Sanjay Sarma and Research Scientist Josh Siegal have set out to do. One evening, Sarma experienced the annoyance of a faulty circuit breaker at home, where it just kept going off. While these breakers, also known as arc-fault circuit interrupters (AFCI), are designed to power down devices when a fire is detected, there was no such issue. 


AFCI trips are both common and incredibly annoying, and Sarma decided to take this annoying problem and create a solution for it. “Think of it as a virus scanner,” says Siegal. “Virus scanners are connected to a system that updates them with new virus definitions over time.” Sarma and Siegal figured that by embedding similar technology into AFCIs would enable them to detect what product was plugged in and learn that it’s a safe object. 

The way the neural network is built is by collating thousands of data points together that have been gathered during arcing simulations. Algorithms are then used to help recognize patterns and make probability decisions. The team is quite confident that with just a sound card and a cheap microcomputer they can easily integrate this technology into circuit breakers. 

But, this is just one area in which neural networks could be used to make homes more intelligent. It could also be used to detect if there are any anomalies within the home such as a burst pipe or an intrusion; it could control the temperature within the home, or it could even run a diagnostic to see if anything needs fixing. “We’re developing software for monitoring mechanical systems that are self-learned,” says Siegel. “You don’t teach these devices all the rules, you teach them how to learn the rules.”

AI improves how we interact with devices, products, and environments. It also helps to improve the efficiency of manufacturing and design processes. “Growth in automation along with complementary technologies including 3-D printing, AI, and machine learning compels us to, in the long run, rethink how we design factories and supply chains,” says Associate Professor A. John Hart. “Having 3-D printers that learn how to create parts with fewer defects and inspect parts as they make them will be a really big deal – especially when the products you’re making have critical properties such as medical devices or parts for aircraft engines.”

At another corner of the MIT campus, also on the mission to develop the world of AI, lies Professor Sangbae Kim, and his robotic cheetah. Using LIDAR technologies, this four-legged machine senses its environment and moves accordingly. And as its name suggests, it can even run and leap over things. Kim is hoping to someday team up with Jeehwan Kim and his neural network. Together they could make they cheetah run and jump as well as recognize people, voices, and even gestures. 


While we still may be a way off interacting with robots on an intelligence level, both AI and machine learning have already integrated themselves deep within our lives. Whether it’s using the internet of things to keep our homes safe or it’s using handwriting recognition to protect our information, the benefits of AI are hard to ignore and will only get better and better.

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How deadly is the Exposure to Gamma Radiation?

If we talk in terms of penetration; Gamma Radiation holds the top spot. It is the most penetrative of all energies known to man. This property of gamma rays is used in treating cancer through radiation, exploration of new resources, medical equipment sterilization etc. However, the same attribute of gamma rays makes them a hazard to the human health as well.

Since gamma radiation is ionizing in nature, it has ample amount of energy, even in low doses, to cause breakage of essential bonds or connections in genetic material and cellular components. It is because of this; exposure to gamma radiation can cause significant health effects, which if, collects over time, can be fatal. Though our body can repair any kind of damage if the damage is allowed to collect overtime or a person got exposed accidentally to high doses of radiation; the damage can be irreparable. 


People who are at a risk of exposure to gamma radiation such as firefighters, military, police & EOD personnel, persons working in nuclear industry and astronauts wear radiation shielding equipment while on duty. These radiation shields protect them from the adverse health effects of consistent exposure to gamma radiation. 

Effects of Exposure to Gamma Radiation

  • Burns

The first external effect observed, depending upon the intensity of exposure, is skin burns which are highly painful and hard to treat. 

  • Radiation Sickness

Radiation sickness can be mild or severe depending upon the intensity of the gamma radiation and the duration as well as consistency of the exposure. 

While small doses of gamma radiation are capable to kill any type of body cell; the ones who are most prone are those which develop fast like skin cells, hair cells as well as cells present in the digestive tract. A person might experience nausea and vomiting immediately after a mild exposure which generally advances into severe fatigue in later days. 


Exposure to larger doses of gamma radiation is generally fatal in most cases. Symptoms include severe diarrhea, extreme headache, improper and slow healing of wounds and even organ failure which results in death. The most common cause of deaths due to exposure to radiation is bone marrow failure. Bone marrow is highly vulnerable to gamma radiation and since it is responsible for the production of red as well as white blood cells; its failure means death. 

  • Cancers

Persons who recover after being exposed to gamma radiation, are susceptible to develop cancer, anytime in their later life as the genetic material of some cells might still be damaged. These damaged cells, when they divide can result in a cancerous growth in the entire body. 

Moreover, in the case of a pregnant woman, these genetically damaged cells can cause birth defects in the newborn. 

Recovery from exposure to gamma radiation can never be said as 100%. The presence of genetically mutated and damaged cells can have adverse consequences, even for the upcoming generation of that person making protection from the adverse effects of exposure to gamma radiation highly vital and life-sustaining. 


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