CCTV systems are divided into simple and complex, multi-chamber, with different image processing. Simple CCTV systems are used for the primitive, momentary monitor the situation at the facility in real time scale. For sufficiently strong demands for control of the protected object in several zones apply multi-chamber system of surveillance, equipped, for example, multiple cameras, connected through the quad, multiplexer or video recorder for one or two video monitor. In such cases, use is usually up to 16 surveillance cameras, as more difficult to work a camera operator on monitoring the situation in each area of surveillance. The optimum observation of an 8-camera one operator. A simple surveillance system consists of two elements: the camera and video monitor connected a communication line to transmit the signal from the camera on a video monitor. Such a system is a basic element for video surveillance systems, video surveillance and video surveillance of any complexity. Video system can be colored or black & white (B / W).
The vast majority of applied color video. The most important characteristic of video is its resolving power, ie, the ability to display the finest detail. Ordinary resolution is 420 TV lines. The monitor should have a higher resolution, so as not to degrade the overall system resolution. It is advisable to choose a monitor with a resolution of 600-800 TV lines. The most important quality television systems for the protection of objects is the possibility of recording and documenting long-term surveillance of events occurring on protected objects. For this purpose, video on specialized recorders or other recording devices that can operate in continuous mode and recording mode on a regular schedule or event, with a mandatory record current time and date. Thus, systems of video – this is video surveillance systems with video have a great help the security services in an objective assessment of the situation at the facility, identifying control objects, as well as allow the quality of operators.
We cannot send text books because do not match programmes. We take into account profile and needs Center or target community: universal literature in Castilian; dictionaries and encyclopedias; manuals from disclosure: Sociology, politics, economics, law, pedagogy, methodology of language, literature, philosophy, psychology, universal history, universal geography, social assistance, anthropology, mathematics, physics, chemistry, geology, paleontology, Botany, zoology, medicine, technology, computer science; books of travel, music, art or film; children’s and youth literature. In these years, solidarity has sent more than half a million well selected books from among more than one million copies received. Without social volunteers of all ages, never we had failed to classify and distribute books that are donated for subsequent shipment by thematic fields and select books in bad condition for subsequent recycling. A work which strengthens also the ecological conscience of our work social. We also repair those books which have small defects and separate outdated or books with a profile not suitable for shipping. For years is a record for easy location and subsequent selection of the books that make up the shipment. Thanks to modern techniques, we have a computer record containing information relating to the content of each of the shipments.
None of this would be possible without participating in the collection of books in colleges, universities, and institutions as town halls, communities and newspapers that give us those who have already read. It is a task of social awareness that allows you to publicize educational problems of impoverished countries and educate others about the need to cooperate in development projects. The task of the volunteer person is not only a work for cultural purposes, but that branch out its implications in multiple fields of development, cooperation, values education and improving conditions, medium and long term, of the countries impoverished. Education is the strongest of all the values of the future, and the reading is one of the basic pillars of education.