Security cameras

If the seat of a condensed phase explosion and an associated crater can be located, this can be quite helpful. Measurement of crater dimensions can enable an approximate estimate of the amount of explosive involved, and also may focus questioning of witnesses or examination of video footage from security cameras. Crater size depends on the mass and nature of the explosive, the nature of the substrate, and the position of the explosive charge relative to the substrate surface. As a first approximation, the diameter of a crater in a uniform substrate varies as the cube root of the explosive mass for a charge on or above the surface. For charges buried just below the surface, the diameter of the crater is proportional to the mass of explosive raised to the power 7/24 this factor allows for the effect of backfilling of the crater by ejected material. Intuitively (and practically), the diameter of the crater in the surface also decreases with distance of the charge above or below the surface. 

Detect countermeasures allow facility personnel to identify surveillance and incipient attack. Security cameras play an important role in detection, and recent developments in software make it possible to pick unusual behavior out of crowds for more thorough investigation. Entry alarms and proximity alarms are additional detection countermeasures. In extremely sensitive cases, detection countermeasures may be set a distance away from the facility to identify a possible attack before it arrives at the boundary. 

Everyone s in place, sir," Nelson Akroid datavised. "And the AIs have taken command of the security cameras. The hostiles don t know we re here."... 

So we thought about how Edenists would search the asteroid for you. Adamists would use spylenses and hack into the communications net to get at public monitor security cameras. Edenists would use bitek systems, either simulants or affinity-bonded animals. We started looking. And here they are. Spiders. They re everywhere, Alkad. We checked. Ayacucho is totally infested."... 

While consumer applications such as cell phones, notebook computers, camcorders, and cordless tools will be the obvious mass market application for direct methanol fuel cells at a power level up to 100 W, there should be an earlier market for PEM fuel cells in a niche sub-1 kW market. The t)rpe of device that fits this class includes weather stations, signal units, APUs, gas sensors, and security cameras. Companies involved in this area include Plug Power www.plugpower.com and Ballard Power Systems www.ballard.com." ... 

Security cameras should be robustly fixed and cable runs designed so that they cannot be sabotaged by a potential intruder. 

Installing security camera(s) capable of recording robberies or criminal activities. This acts not only as a deterrent, but also as a means to prevent a perpetrator from returning to the establishment or other operations if apprehended. As a complement to the camera(s), height markers displaying measurements from the floor are placed adjacent to the entrance. The camera and the clerk can use these to help identify assailants. 

Search for Reynosa Mexico Gas Explosion 2012 and you will find several sites featuring videos of a vapor cloud fire sweeping across a plant site. Security cameras reeord the seenes of on-site individuals attempting to run to safety. Other reports state 26 individuals were killed. 

Evidence is also collected about the people involved in the collision. Blood samples may be taken to determine the physical condition of the drivers. Driver qualifications and experience are noted. Logbooks of commercial drivers are obtained. Photographs of impact injuries are taken. Statements are obtained from any witnesses to the collision as well as occupants of the vehicles and responding police officers. Video evidence from speed cameras or security cameras on nearby buildings is also obtained. 

Figure 7-4 Security camera, light, and wind sock...

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