Most of the companies that benefit from their history of so-called "commercial security" base their business on the knowledge of legislation and they are aware of the importance of ČSN for their business. But closer attention should be given by those who see security as mere business.

A light pipe prototype with a concentrating mirror parabolic head was tested for temperature profiles under solar radiation. The purpose of the testing is to find maximal temperature and estimate potential risks with overheating in the position of the pipe installation into roof structures and materials.

The article deals with the economic assessment of energy saving measures as a further continuation of the topic of reconstruction of HVAC systems in apartment buildings. Selection of economical lifespan for selected elements and functional parts with preventive maintenance costs is provided. Finally, an example of the apartment building evaluation is given.

The first article of the series on energetic reconstruction HVAC systems in residential buildings is focused on the preparation of project with minimum necessary information that should be prior to any commencement reconstruction. In current practice this part is significantly neglected.

In the media, the issue of ICT convergence with other fields is mainly described only from a technological point of view. The practical impact on designing and designing buildings is however no longer mentioned. How do you perceive the words project and project documentation you?

The security services of centralized surveillance appeared in our country in the 1970s. In today's article we will return to the area of ​​alarm and security systems using the permanent exhibition of the Police Museum of the Czech Republic.

This article describes the basic principles of Internet of Things and deals in detail with the types of networks for Internet of Things in the Czech Republic and their advantages and disadvantages.

Electrochemical capacitors (supercapacitors, ultracapacitors) are electrotechnic components which are able to accumulate, hold and bring back a lot of electricity (compared to conventional capacitors). For accumulation of electricity they use two principles: electric bilayer and reversible chemical reactions.

On June 16, 2017, the Ministry of Industry and Trade announced a grant call for proposals under the Operational Program Entrepreneurship and Innovation for Competitiveness, the Energy Savings Program, which offers subsidies for photovoltaic systems with / without accumulation to cover their own electricity consumption of business entities.

Do you have a CCTV installed in your apartment building? What will happen to you in 2018, when the new European legal framework for the protection of personal data, which is the General Regulation 2016/679, comes into force.

Indoor environment quality is being more and more discussed topic. Technologies for indoor monitoring are becoming affordable and thus can be installed as autonomous monitoring and indicative systems. It can be used also in connection with ventilation system. In this article there are summarized the most important quantities related to the indoor air quality with its limit values. Particular technologies of sensors are mentioned and new sensor platform for complex monitoring of indoor environment with possible usage for controlling systems affecting indoor environment is introduced.

The paper describes briefly the problems of temperature measurements during fire tests. To verify the standard requirement an experiment was conducted with three K type thermocouples (TC) of different diameters of wires and lengths of connected cables. TCs were inserted gradually into the el. heating furnace heated at the temperature of 800 ° C with records over time until reaching maximal steady state temperature; TCs were subsequently removed from the furnace and again with recording temperatures during cooling to the room temperature. The results are shown in the table and graphs. The experiments have confirmed that the sensitivity /response of TC to fluctuating temperatures of the gaseous medium depends on the diameter of the TC. It is obvious that these findings could have practical use in the field of fire protection.

This paper describes extinguishing experiments to verify the possibility of increasing the efficiency of extinguishing low, medium and high pressure water mist charging by the electric field of high DC voltage. The experimental results confirmed the effects of the electrical voltage, the configuration of electrodes (anode, cathode), the volumetric water flow rate, water pressure and the type of mist nozzle. Higher extinguishing effect electrically charged water mist to extinguish showed a shorter times to extinguishment, a smaller volume of water to extinguish the fire and extinguishing a higher percentage of successful attempts. Benefit: faster and more efficient fire- fighting with less risk of injury and less consequential damages in a protected space.

One of the main trend of the 21^st century in the field of electronic products and information technology is uniquely accessing of devices via the Internet and their remote monitoring and control. Such devices are generally called as smart. In general awareness will begin to receive designation as a smart city, smart street, smart building, smart TV, smart thermostat, smart refrigerator, or even smart light bulb. The flip side of that has not still been publicly spoken is the cyber security of these devices against hacker attacks from the Internet.

The natural radioactivity lives mankind throughout its development. The effects of radiation to some extent they can influence the evolutionary history of life on Earth. It is therefore important to determine what values the natural radioactivity would reach different locations of the world.

Turnstile, a device designed to physically limit passage for just single person at a time. In the past it was often just a mechanical gate while today it is a full-featured electromechanical device with its own control and evaluation logic.

Turnstile, a device designed to physically limit passage for just single person at a time. In the past it was often just a mechanical gate while today it is a full-featured electromechanical device with its own control and evaluation logic.

Turnstile, a device designed to physically limit passage for just single person at a time. In the past it was often just a mechanical gate while today it is a full-featured electromechanical device with its own control and evaluation logic.