Monday, March 17, 2008

Smart Cards

A smart card, chip card, or integrated circuit card (ICC), is defined as any pocket-sized card with embedded integrated circuits that can process information. This implies that it can receive input that is processed - by way of the ICC applications - and delivered as an output. There are two broad categories of ICCs. Memory cards contain only non-volatile memory storage components, and perhaps some specific security logic. Microprocessor cards contain volatile memory and microprocessor components. The card is made of plastic, generally PVC, but sometimes ABS. The card may embed a hologram to avoid counterfeiting.
Most advanced smart cards are equipped with specialized cryptographic hardware that let you use algorithms such as RSA and DSA on board. Today's cryptographic smart cards are also able to generate key pairs on board, to avoid the risk of having more than one copy of the key. Since by design there usually isn't a way to extract private keys from a smart card.
Such smart cards are mainly used for digital signature and secure identification. The most common way to access cryptographic smart card functions on a computer is to use a PKCS#11 library provided by the vendor. On Microsoft Windows platforms the CSP API is also adopted.
The most widely used cryptographics in smart cards excluding the GSM so-called "crypto algorithm" are 3DES (Triple DES) and RSA. The key set is usually loaded (DES) or generated (RSA) on the card at the personalization stage.

Thursday, March 13, 2008

Naturopathic medicine

Naturopathic medicine (also known as naturopathy) is a complementary and alternative medicine. Naturopathic practice may include different modalities such as manual therapy, hydrotherapy, herbalism, acupuncture, counseling, environmental medicine, aromatherapy, orthomolecular medicine, nutritional counseling, homeopathy, and chiropractic. Practitioners emphasize a holistic approach to patient care. Naturopathy has its origins in a variety of world medicine practices, including the Ayurveda Nature Cure of Europe. It is practiced in many countries but subject to different standards of regulation and levels of acceptance.
Naturopathic practitioners prefer not to use invasive surgery, or most synthetic drugs, preferring "natural" remedies, for instance relatively unprocessed or whole medications, such as herbs and foods. Practitioners from accredited schools are trained to use diagnostic tests such as imaging and blood tests before deciding upon the full course of treatment. If the patient does not respond to these treatments, they are often referred to physicians who utilize standard medical care to treat the disease or condition.
Naturopathic practitioners find it difficult to obtain financing for research due to the lack of prior research in many areas and the fact that whole substances from nature, such as herbs, cannot be patented and are therefore not a profitable investment. Proponents claim that this is slowly changing as naturopathic physicians develop research programs to help build up a foundation for evidence based treatment.
Naturopathic modalities may be controversial (e.g. homeopathy, which several studies have indicated to be ineffective), or have proven effectiveness only for very specific conditions (eg: acupuncture, aromatherapy). Some of these modalities and remedies are known to be harmful if not used properly or under the care of a trained practitioner

Wednesday, March 5, 2008

Sustainability

Sustainability is a characteristic of a process or state that can be maintained at a certain level indefinitely. The term, in its environmental usage, refers to the potential longevity of vital human ecological support systems, such as the planet's climatic system, systems of agriculture, industry, forestry, and fisheries, and human communities in general and the various systems on which they depend in balance with the impacts of our unsustainable or sustainable design.
In recent years an academic and public discourse has led to this use of the word sustainability in reference to how long human ecological systems can be expected to be usefully productive. In the past, complex human societies have died out, sometimes as a result of their own growth-associated impacts on ecological support systems. The implication is that modern industrial society, which continues to grow in scale and complexity, will also collapse.
The implied preference would be for systems to be productive indefinitely, or be "sustainable." A side discourse relates the term sustainability to longevity of natural ecosystems and reserves (set aside for other-than-human species), but the challenging emphasis has been on human systems and anthropogenic problems, such as anthropogenic climate change, or the depletion of fossil fuel reserves.
Despite differences, a number of common principles are embedded in most charters or action programs to achieve sustainable development, sustainability or sustainable prosperity. Dealing transparently and systemically with risk, uncertainty and irreversible. Ensuring appropriate valuation, appreciation and restoration of nature.
Conservation of biodiversity and ecological integrity.
  • Ensuring inter-generational equity.
  • Recognizing the global integration of localities.
  • A commitment to best practice.
  • No net loss of human capital or natural capital.
  • The principle of continuous improvement.
  • The need for good governance.

Wednesday, February 20, 2008

Pottery

Pottery is the ceramic ware made by potters. In everyday usage the term is taken to encompass a wide range of ceramics, including earthenware, stoneware, and porcelain. The places where such wares are made are called potteries. For a description of the nature of the material, It usually falls into three main classes—porous-bodied pottery, stoneware, and porcelain. Raw clay is transformed into a porous pottery when it is heated to a temperature of about 500°C. This pottery, unlike sun-dried clay, retains a permanent shape and does not disintegrate in water. Stoneware is produced by raising the temperature, and porcelain is baked at still greater heat. In this process part of the clay becomes vitrified, or glassy, and the strength of the pottery is increased. Pottery is formed while clay is in its plastic form. Either a long piece of clay is coiled and then smoothed, or the clay is centered upon a potter's wheel (used in Egypt before 4000 B.C.) that spins the clay while it is being shaped by the hand, or thrown. Decoration may be incised, and the piece is allowed to dry to a state of leather hardness before firing it in a kiln. The type of finish, depending on the kind or number of glazes, dictates the total number of firings. When slip and graffito are used, they are applied before the first firing. There are two types of fires—reducing and oxidizing. The former removes oxygen while the latter, a smokeless fire, adds it. Reduction and oxidation change the color of the fired clay and gave early potters their palette of red, buff, and black. This is about the pottery

Tuesday, February 5, 2008

Apartment search in Texas

I would love to give some tips for the people who are going for apartment search dallas. They are at first you need to remember that few things about apartment hunting will ever change. Renters still need to visit apartments, fill out lease applications, however, is the expanded role of the Internet in the search process. As renters become more technologically savvy, they are turning to the Internet more frequently to get information about prospective apartments before visiting the community or completing an application. What the Internet brings to the apartment search is information, and it can take hours to sift through it all. With so much information available, it can be all too easy to get side tracked by non-essential details in cyberspace.

Whether you're considering a move across town, across the country, or even overseas, the Internet's global reach makes it possible to conduct an apartment search anywhere in the world without ever leaving your seat. These apartment search sites will ask you for your preferences for location, size, price and amenities. Once you enter this data, the site will present you with a list of apartments that fit your criteria. You can then browse the listings and determine which apartments are worth a visit while quickly eliminating those apartments that don't fit your needs. In addition, these apartment search sites generally have links to additional rental resources, such as moving companies, utilities, roommate matching services, and rental insurance companies etc. and this had made the people easy to have a comfortable search. Especially big states like Texas where you cannot go and search for the apartments manually.

Thursday, January 10, 2008

Obesity a serious threat

Obesity is at epidemic levels in the United States, and with the spread of Western culture it is fast becoming a global problem. It is estimated that over 300 million people are overweight, worldwide; and that number is rising. When I go around in my neighborhood I find many people irrespective of age – from a 7-year-old kid to a 70 year old are obese.

The prevalence of overweight and obesity in the United States makes obesity a leading public health problem. The United States has the highest rates of obesity in the developed world. From 1980 to 2002, obesity has doubled in adults and overweight prevalence has tripled in children and adolescents. From 2003-2004, "children and adolescents aged 2 to 19 years, 17.1% were overweight...and 32.2% of adults aged 20 years or older were obese." The prevalence in the United States continues to rise.

I started thinking how it would be if the same rate of oversization of US continues. It is shocking. Nearly one fourth of the adults in the United States are obese.Awareness of these health issues can help in understanding why it is important to maintain a healthy weight. After all, if you know what being overweight can do to your health, then you have more reasons to maintain an ideal weight.

Thursday, January 3, 2008

Father Of Modern Management - Peter F Drucker

Peter Ferdinand Drucker was born in November 19, 1909 and died in November 11, 2005. He was a writer, management consultant and university professor. His writing focused on management-related literature. Peter Drucker made famous the term knowledge worker and is thought to have unknowingly ushered in the knowledge economy, which effectively challenges Karl Marx's world-view of the political economy. George Orwell credits Peter Drucker as one of the few writers who predicted the German-Soviet Pact of 1939.

Drucker in 1937, moved to the United States, where he became a university professor as well as a freelance writer and business guru. In 1943 he became a naturalized citizen of the United States. He taught at New York University as a Professor of Management from 1950 to 1971. Drucker came to California in 1971, where he developed the country's first executive MBA program for working professionals at Claremont Graduate University. From 1971 to his death he was the Clarke Professor of Social Science and Management at Claremont Graduate University. The university's management school was named the Peter F. Drucker Graduate School of Management in his honor in 1987. He taught his last class at the school in the Spring of 2002. Drucker died November 11, 2005 in Claremont, California of natural causes. He was 95.

U.S. President George W. Bush awarded the Presidential Medal of Freedom Drucker on July 9, 2002. He was the Honorary Chairman of the Peter F. Drucker Foundation for Nonprofit Management, now the Leader-to-Leader Institute, from 1990 through 2002. His most controversial work was on compensation schemes, in which he said that senior management should not be compensated more than twenty times the lowest paid employees. This attracted criticism from some of the same people who had previously praised him. Mr. Drucker was inducted into the Junior Achievement U.S. Business Hall of Fame in 1996.