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Fundamentals Evolution of the term The word tactics originates in the Greek taxis, meaning order, arrangement, or disposition—including the kind of disposition in which armed formations used to enter and fight battles. From this, the Greek historian Xenophon derived the term tactica, the art of drawing up soldiers in array. Likewise, the Tactica, an early 10th-century handbook said to have been written under the supervision of the Byzantine emperor Leo VI the Wise, dealt with formations as well as weapons and the ways of fighting with them. The term tactics fell into disuse during the European Middle Ages. Until then, authors had considered fighting to be almost the sum total of war; now, however, it began to be regarded as merely one part of war. The art of fighting itself continued to carry the name tactics, whereas that of making the fight take place under the most favourable circumstances, as well as utilizing it after it had taken place, was given a new name: Since then, the terms tactics and strategy have usually marched together, but over time each has acquired both a prescriptive and a descriptive meaning.

Organisation of OKDIA

History of Technology Heroes and Villains – A little light reading Here you will find a brief history of technology. Initially inspired by the development of batteries, it covers technology in general and includes some interesting little known, or long forgotten, facts as well as a few myths about the development of technology, the science behind it, the context in which it occurred and the deeds of the many personalities, eccentrics and charlatans involved.

You may find the Search Engine , the Technology Timeline or the Hall of Fame quicker if you are looking for something or somebody in particular. Scroll down and see what treasures you can discover. Background We think of a battery today as a source of portable power, but it is no exaggeration to say that the battery is one of the most important inventions in the history of mankind. Volta’s pile was at first a technical curiosity but this new electrochemical phenomenon very quickly opened the door to new branches of both physics and chemistry and a myriad of discoveries, inventions and applications.

Travel the World from Home with Our Passport to Love. Are you looking for an anniversary or birthday gift idea for your spouse? Maybe you’re looking to spice up date night, or you want to travel the world on a super tight budget.

History Galton whistle, one of the first devices to produce ultrasound Acoustics , the science of sound , starts as far back as Pythagoras in the 6th century BC, who wrote on the mathematical properties of stringed instruments. Echolocation in bats was discovered by Lazzaro Spallanzani in , when he demonstrated that bats hunted and navigated by inaudible sound and not vision.

Francis Galton in invented the Galton whistle , an adjustable whistle which produced ultrasound, which he used to measure the hearing range of humans and other animals, demonstrating that many animals could hear sounds above the hearing range of humans. The first technological application of ultrasound was an attempt to detect submarines by Paul Langevin in The piezoelectric effect , discovered by Jacques and Pierre Curie in , was useful in transducers to generate and detect ultrasonic waves in air and water.

The Mosquito is an electronic device that uses a high pitched frequency to deter loitering by young people. Animals Bats use ultrasounds to navigate in the darkness. A dog whistle , a whistle which emits sound in the ultrasonic range, used to train dogs and other animals Bats use a variety of ultrasonic ranging echolocation techniques to detect their prey. This includes many groups of moths , beetles , praying mantids and lacewings.

Upon hearing a bat, some insects will make evasive manoeuvres to escape being caught.

Environment

History Galton whistle, one of the first devices to produce ultrasound Acoustics , the science of sound , starts as far back as Pythagoras in the 6th century BC, who wrote on the mathematical properties of stringed instruments. Echolocation in bats was discovered by Lazzaro Spallanzani in , when he demonstrated that bats hunted and navigated by inaudible sound, not vision. Francis Galton in invented the Galton whistle , an adjustable whistle that produced ultrasound, which he used to measure the hearing range of humans and other animals, demonstrating that many animals could hear sounds above the hearing range of humans.

The first technological application of ultrasound was an attempt to detect submarines by Paul Langevin in The piezoelectric effect , discovered by Jacques and Pierre Curie in , was useful in transducers to generate and detect ultrasonic waves in air and water.

Latest environmental news, features and updates. Pictures, video and more.

The concept was originally derived in ecology and has been transferred to analyse human industrial society. This marks the edge of The Net Energy Cliff and it is clear that new Green technologies designed to save humanity from CO2 may kill humanity through energy starvation instead. Fossil fuels remain comfortably away from the cliff edge but march closer to it for every year that passes. The Cheetah symbolises an energy system living on the edge. I had never contemplated the concept before and I was immediately struck by its importance.

If we used more energy to get the energy we need to survive then we will surely perish. But recently I have received this via email from Nate: A new tier of people are aware of EROI but it is still very fringe idea? Are we wrong to believe that ERoEI is a fundamentally important metric of energy acquisition or is it simply that the work done to date is not sufficiently rigorous or presented in a way that economists and policy makers can understand.

At this point I will cast out a bold idea that money was invented as a proxy for energy because ERoEI was too complex to fathom. On the grand scheme of things: Before asking the IEA or whomever to start using ERoEI, the community producing these estimates must come down to a common, accepted methodology for its assessment. And while I disagree with Luis on a number of issues, on this statement I totally concur.

So what has gone wrong?

Battery and Energy Technologies

Placental mesenchymal dysplasia PMD is a benign condition that can be confused with a molar pregnancy by ultrasound scanning and gross examination. It is characterised by enlargement of the placenta with multiple bunch of grape-like vesicles. The condition is often underdiagnosed and underreported case due to lack of awareness. Cases are rare and are said to occur in just 0. PMD usually features a normal foetus.

Many people have been finding love online, but others have not been so fortunate. In fact, romance scams actually cost Americans more money than any other kind of internet fraud. Find out more so you don’t get taken advantage of online.

Harris started the world’s first dental school in Bainbridge, Ohio , and helped to establish dentistry as a health profession. It opened on 21 February , and today is a dental museum. Studies show that dentists that graduated from different countries, [14] or even from different dental schools in one country, [15] may make different clinical decisions for the same clinical condition.

For example, dentists that graduated from Israeli dental schools may recommend the removal of asymptomatic impacted third molar wisdom teeth more often than dentists that graduated from Latin American or Eastern European dental schools. In most western countries, to become a qualified dentist one must usually complete at least four years of postgraduate study; [21] within the European Union the education has to be at least five years.

Dentists usually complete between five and eight years of post-secondary education before practising.

The Jungle Book: 5 best tours to Rudyard Kipling’s India

The Nigerian dating scams target the lonely and vulnerable. The most common comment of victims who think they have found the love of their life is “I can’t believe I was so stupid! The Nigerian dating scams are hugely profitable. The Nigerians call them ‘maghas’ which is slang for gullible white people.

1. (a.k.a. ) is the best online dating site in Thailand. If I only had money to spend on one site, this is the site that I would spend it on.

With the Kipling classic set to return to the big screen, we look at locations that inspired Kipling’s books, including some of India’s best national parks for seeking the elusive Bengal tiger: Kanha, Pench and other notable national parks. Best for Kipling links: A new film version of The Jungle Book, based on the work of Rudyard Kipling, one of the giants of English literature, is due to hit the screens shortly. On this unforgettable tour you will trace the world that shaped him.

Next tour departs February Run with our trusted partner, Wild Frontiers.

PIXMA MX410

See Article History Tactics, in warfare, the art and science of fighting battles on land, on sea, and in the air. It is concerned with the approach to combat; the disposition of troops and other personalities; the use made of various arms, ships, or aircraft; and the execution of movements for attack or defense. This article discusses the tactics of land warfare.

The Energy Return on Energy Invested (ERoEI or EROI) of any energy gathering system is a measure of that system’s efficiency. The concept was originally derived in ecology and has been transferred to analyse human industrial society.

It is one of the most popular websites in China and on the entire web. Jiayuan Dating Site Jiayuan has a whopping million members. And there are a lot of pages, because Jiayuan is packed with different features. There are multiple ways to search and communicate with members, many games to play, a matchmaking service, guides, blogs, customer support, dating events, and even a page dedicated to financial advice. With so many features and users, this has to be a great site.

But unless you speak Chinese, this will be a difficult, potentially frustrating experience for you. Sign up Process Start with your gender, birthday, location, and marital status, and go on to fill in your basic information and choose a password and username. Finish by selecting three labels to describe yourself e.

Ultrasound

This part is very useful both for Prelims and Mains. Best book to study this section is D. For Basic Structure, These two articles might help you.

Cybercrime is a criminal activity which is carried on by the use of computers and the Internet. Some of the common cyber crimes are hacking, cyber stalking, denial of service attack(DoS), virus dissemination, software piracy, credit card fraud & phishing.. To tackle the issue of cyber crimes, CIDs (Criminal Investigation Departments) of various cities opened up Cyber Crime Cells in different.

Now, can you imagine living without your cell phone? According to the Pew Internet Project’s research study related to mobile technology, 56 percent of Americans have a smartphone, and 29 percent of cell phone owners describe their device as something they can’t imagine living without. I’ve often said that if your cell phone was waterproof, it would end up in the shower with you. That’s how dependent and attached we’ve become to our smartphones.

Enter the popular world of mobile dating. Singles are finding themselves living in an instant-gratification world of push notifications, as they embrace mobile dating apps from their favorite dating sites, or try the new mobile-friendly apps to make new friends, casually hook-up, or find a serious relationship. As love continues to blend together with technology in everyday life, a variety of flavors of dating apps are helping to speed up the process for online daters. Several new apps, considered social networking apps or social discovery apps, were featured in this year’s Mobile Dating BootCamp.

The convenience of dating from your mobile phone not only results in meeting more people, but it also speeds up the process from initial contact to meeting in person, and it allows you to connect through Facebook to see if you have friends in common, which gives instant credibility to your potential date. From hook-ups to marriage, here are 10 mobile dating apps that I recommend to help singles in their quest to find the perfect date.

First, let’s start with the household names of the dating sites that you’re probably already familiar with.

Philippines Hospital Costs- ER Admission, X-Ray, CT Scan, Ultrasound, Lab & More ✅