A Breif Look at the Wireless Spy Camera

Spy cameras and security cameras have been out for many years. Until recent times these devices had several flaws ranging from size, usability and their general cost. All these factors made owning a spy camera a tricky prospect that often left people choosing to make do without.

Thankfully today's technology has allowed major advancements in spy camera and security systems and has introduced the concept of wireless spy cameras. These cameras are not only much smaller than their predecessors but are far more versatile and come at only a fraction of the cost. Today, anybody can own ones of these brilliant devices.

Wires and cables have always presented a problem when trying to hide a spy camera. Even perfectly visible security cameras struggle with wiring issues. It is no surprise that this was one of the first features they offered a solution to.
By inserting battery packs into the new range of wireless spy cameras they enabled each camera to act independently of any power supply offering numerous advantages, such as protection from power cuts, and versatility in placement.
When you couple this with the new methods of recording and transmitting data wirelessly you are left with a completely independent device open for all kinds of use. Wireless spy cameras transmit and record data in one of two ways.

1. Transmitter / Receiver

Transmitter and receiver models work with a small transmitter, transmitting everything it record to a nearly by receiver. The receiver is hooked up to a device such as a VCR or DVD recorder. More and more receivers are being connected to DVR (Digital video Recording) devices. These devices are custom built to work with spy cameras and save the recording as nice compact digital files that can be played almost anywhere.

2. Built in Memory

A small portion of these camera contain an in built memory system. These wireless spy cameras are aimed more at single camera systems as fetching the device to play it back can be a quite annoying task. These units are able to act completely independently as long as you have access to a pc or television set to play the footage back on later.

These advances have allowed spy camera to be completely wireless and they now offer the most diverse surveillance techniques available today. Whatever your surveillance needs, look in to wireless spy cameras for an answer to your problem.

Key Facts About Avian Influenza (Bird Flu) and Avian Influenza A (H5N1) Virus

Avian influenza is an infection caused by avian (bird) influenza (flu) viruses. These influenza viruses occur naturally among birds. Wild birds worldwide carry the viruses in their intestines, but usually do not get sick from them. However, avian influenza is very contagious among birds and can make some domesticated birds, including chickens, ducks, and turkeys, very sick and kill them.

Infected birds shed influenza virus in their saliva, nasal secretions, and feces. Susceptible birds become infected when they have contact with contaminated secretions or excretions or with surfaces that are contaminated with secretions or excretions from infected birds. Domesticated birds may become infected with avian influenza virus through direct contact with infected waterfowl or other infected poultry, or through contact with surfaces (such as dirt or cages) or materials (such as water or feed) that have been contaminated with the virus.

Infection with avian influenza viruses in domestic poultry causes two main forms of disease that are distinguished by low and high extremes of virulence. The “low pathogenic” form may go undetected and usually causes only mild symptoms (such as ruffled feathers and a drop in egg production). However, the highly pathogenic form spreads more rapidly through flocks of poultry. This form may cause disease that affects multiple internal organs and has a mortality rate that can reach 90-100% often within 48 hours.

How GIS Maps Are Used Today

GIS refers to technology known as geographic information systems. These systems capture, analyze, and present data based on location. The presentation is usually in the form of a map, but can also be output in other forms for analysis or to convey information. These systems are used by many industries, state and local government authorities, the Federal government and the military. Most of the systems are fairly similar, with the exception of the military which has different uses for the data. The use of GIS mapping has actually been around since the 1960's with the early computers. However, due to the massive amounts of data involved in these applications, there use did not become more widespread until the early 1980's.

This is when the computing resources became significantly faster at an affordable price. The earliest application of GIS technology was in Canada for a mapping project conducted by the federal Department of Forestry and Rural Development. The technology was used to develop detail mapping of rural land throughout Canada. The government was interested in determining where land was available for various purposes including agriculture, recreation and forestry. With the introduction of less costly and higher powered technology, the uses of GIS maps has grown significantly.
The applications have gone beyond simply presenting a map of land by type of use, to characteristics and demographics about the land. In the retail environment, companies will develop maps integrated with census and other data, to identify locations for building new stores or conducting various marketing activities. Governments can create maps to identify where services are needed, for example, locating areas where that are underserved by physicians or hospitals.

Law enforcement agencies have been using GIS to create maps identifying areas with criminal activity in order to increase patrols in that area. Events like 9/11 and Hurricane Katrina have allowed emergency responders to identify escape routes and relocation facilities. The advantage of GIS mapping is that it produces output, in the forms of map and other data, in a single place. By linking this data, it provides an easy to understand representation of the information. As computing capabilities increase the available applications will also grow.