The Regional category contains English language sites about geographical regions of the world. See the Regional Guidelines for detailed editor notes on how to organize a particular Regional category.

Business consultants are individuals or firms with expertise in business procedures, practices and policy. Organizations of all types use consultants, and these consultants examine these organizations from a broad operational perspective applying a variety of skills to achieve a specific outcome, solution, or result. Through analysis and study, consultants provide problem resolution and prevention solutions related to business operations, infrastructure, and performance. Consultants have many roles, varying from a supportive one within an existing team, to providing temporary leadership over an identified problem area, to other independent activities conducted at the request of the organization. This category has been divided into three areas to reflect the many functions and roles within the business consulting profession. The top level is divided by some of the various specialty or focus areas typical to the business consulting industry (e.g., business formation, financial, management, manufacturing, outsourcing, etc.). The second level contains a variety of industry specific subcategories (e.g., construction, energy, engineering, science and industry, security, etc.). Within the lowest level is a list of closely related "See also" categories that may contain other types of consultants. Before you submit your site please take the time to look around the category to ensure that your site is appropriate to this category. Also, be sure to review the general guidelines for the Business categories. The editors reserve the right not to list your site, and to delete it after its addition. Multiple submissions may be considered when appropriate (for example, a site that contains valuable resources pertinent to multiple subcategories) but repeated submissions, especially to inappropriate categories, will not be tolerated. Please, submit only to those categories most appropriate to the content of your site.

Artificial Intelligence is a field of science that has several goals. The first, often called "weak" AI, is the effort to design and implement computer systems that can perform tasks requiring intelligence when performed by humans. AI in computer games, knowledge based systems and such are typical examples of this branch. The second, less tangible branch, often called "strong" AI, is the research that ultimatly aims to build artificial systems that display real intelligence. It does this by trying to understand or model the nature of human intelligence. Both branches are multidisciplinary, in that they have close relations with the fields of computer science, philosophy, medicine, psychology, biology and linguistics.

Computer programming is the art of writing software, instructions for computers to follow. At the base level, as understood by the computer, these instructions are written in machine code, or binary, pure numbers, quite difficult for humans to read and write. At a slightly higher level, these codes correspond to assembly language, short mnemonics for individual computer operations, that still correspond one to one with what the machine actually does. This is still unstructured, terse, and difficult to read or write in. Most programming is done in higher level, compiled languages, or even interpretedthat look like a cross between English and Algebra, and allow various abstractions depending on the language, such as encapsulation, function calls, data hiding, and more, to enable people reading and writing programs to deal with the vast quantity of information that the computer actually handles. Respectively, a compiler program translates these languages to machine code to be executed directly, or a separate interpreter program itself takes these statements and executes them as an intermediary.

Cognitive science topics which may span one or more specific sciences including psychology and medicine. Sites, works and indices that assume a scientific model in their processes, references or information gathering and summary.

This category is about mathematical logic and foundations of mathematics. (So it roughly corresponds to category 03-XX in the 1991 Mathematical Sciences Classification.) Major related subjects outside mathematics are computer science at one end, and philosophical logic at the other. If you are looking for basic, non-technical information on logic, you may want to look at the subcategories Encylopedia Articles and Educational Resources. If you think your site or one that you have come across fits here: please submit it. If not sure give it to us anyway ... we will do our best to find where it belongs.

Material science is concerned with understanding the properties of materials and how to create new ones.

"Physics is the study and application of the fundamental laws of nature, including the laws of motion, gravity, electromagnetism, heat, and microscopic interactions. These laws govern the behavior of objects at all scales, from the smallest subatomic particles to the entire observable universe. In between, physicists study nuclear reactions, the interactions of atoms with light, properties of solids, chaotic dynamics of fluids, and the evolution of stars and galaxies, among many other applications."

If this doesn't tickle your fancy, there is always the quote from Rutherford: "In science, there is only physics; all the rest is stamp collecting."

Science is constantly reshaping itself through unexpected observations, new ideas, and revisions to old theories. While terms like "anomalies" or "alternative" may seem pejorative from an orthodox perspective, from an historical view these are the topics are the very life-blood of science. We must have heretics and revolutionaries challenging our beliefs, and advancing the state of the believable, otherwise science will stagnate into dogma.

An accident reconstructionist is someone qualified to analyze the many different aspects of n accident and render an opinion on how and why the accident happened. The reconstructionist may also offer an opinion on how the accident may have been avoided. A reconstructionist will not, generally, determine a level of fault or guilt to one party over another. Every accident results from the interplay of a wide variety of factors. For example, in a traffic accident, a reconstructionist may have to assess the role of vehicle speed, time, distance, ambient lighting, seat belt use, air bags, component failure, brakes, human factors, alcohol as a factor, collision avoidance, crashworthiness and tire failures just to name a few possible factors. It is advisable to consult with an attorney if you have been involved in an accident that resulted in injuries.