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The infection of computer systems with malicious software is an enduring problem of computer security. Avoiding an infection in the first place is a hard task, as computer systems are often vulnerable to a multitude of attacks. However, to explore and control an infected system, an attacker needs to establish a communication channel with the victim. While such a channel can be easily established to...
The term malware is coined to name any software with malicious intentions. One of the methods malware writers use for hiding their creations is executable packing. Packing consists of encrypting or hiding the real code of the executable in such a way that it is decrypted or unhidden in its execution. Widespread solutions to this issue first try to identify the packer used and next apply the corresponding...
According to the principle of phase lock loop, a software phase lock loop (SPLL) for photovoltaic (PV) grid-connected power system has been designed, which used to decrease the phase differ between PV output current signal and utility voltage signal, so to make power factor close to 1. For this kind of software phase lock loop, the implementation scheme is given in detail, and combine with the program...
According to the performance test requirements for the progress of IRFPA detector, a high performance DAQ system based on VXI and USB bus is designed and implemented. A variety of system ultra-low noise suppression measures effectively reduce the test system noise level, which has been proved by our preliminary test results. We use field programmable gate array (FPGA) to implement logic control. In...
In this paper we will discuss several approaches that can be used to develop an oracle in chatting software. This oracle is meant to give early warning to the chatting software user about their chatting partner based on their communication. The approaches include expert rule, data mining, ontology as well as simple text processing. Even though the issue of privacy and free-information in cyber world...
This traffic lights with fuzzy controller is designed based on PLC, assigned the traffic character of cross, fuzzy handled the traffic, apply the merit of PLC enough, according to traffic control standard. This controller can decrease the delay time of a vehicle through a cross, increase the ability of vehicle, display the traffic and the rate of break rules and regulations in the terminal, made it...
The In Situ Object Counting Software (ISOCS), a mathematical method developed by CANBERRA, is a well established technique for computing High Purity Germanium (HPGe) detector efficiencies for a wide variety of source shapes and sizes. In the ISOCS method, the user needs to input the geometry related parameters such as: the source dimensions, matrix composition and density, along with the source-to-detector...
Nuclear material measurements using the ISOCS technique are playing an increasing role in IAEA verification activities. The ISOCS capabilities include: a high sensitivity to the presence of U and Pu; the ability to detect very small amounts of material; and the ability to measure items of different shapes and sizes. In addition, the numerical absolute efficiency calibration of a germanium detector...
The purpose of the FP7 UNCOSS project (Underwater Coastal Sea Surveyor, http://www.uncoss-project.org) is to develop a neutron-based underwater explosive sensor to detect unexploded ordnance lying on the sea bottom. The Associated Particle Technique is used to focus the inspection on a suspicious object located by optical and electromagnetic sensors and to determine if there is an explosive charge...
The compact neutron spectrometer project was initiated to develop a device able to study fast neutrons produced by fusion reactions in a tokamak. The goal is to provide a fully characterized BC501A detector using a digital acquisition system developed by ENEA. The pulse height resolution and the response matrix of the detector are determined using experimental data acquired at the PTB facility. To...
In this paper, we use an FPGA platform and a high level synthesis tool, called Impulse C, to speedup a statistical Line Of Reaction (LOR) estimation for a high-resolution Positron Emission Tomography (PET) scanner. The estimation algorithm provides a significant improvement over conventional methods, but the execution time is too long to be practical for clinic applications. Impulse C allows us to...
Static analysis tools have been widely used to detect potential defects without executing programs. It helps programmers raise the awareness about subtle correctness issues in the early stage. However, static defect detection tools face the high false positive rate problem. Therefore, programmers have to spend a considerable amount of time on screening out real bugs from a large number of reported...
In this paper, we propose a new semantic clone detection technique by comparing programs' abstract memory states, which are computed by a semantic-based static analyzer. Our experimental study using three large-scale open source projects shows that our technique can detect semantic clones that existing syntactic- or semantic-based clone detectors miss. Our technique can help developers identify inconsistent...
This paper describes the performance and characteristics of AT89C52 micro controller, and the author has designed a kind of noise detector, which has the character of low-cost, high precision, miniature, using AT89C52 micro controller as the core component. The detector is used in the workplace, squares and other public places to detect the size of the noise, providing the basis for control of noise.
Modern systems on chip (SoCs) are rapidly becoming complex high-performance computational devices, featuring multiple general purpose processor cores and a variety of functional IP blocks, communicating with each other through on-die fabric. While modular SoC design provides power savings and simplifies the development process, it also leaves significant room for a special type of hardware bugs, interaction...
Wheel set wear online measurement is important for the safety running of train vehicle. Measuring principle based on structure light imaging and machine vision was put forward. The main components included structure light source, CCD and wheel detector. Calibration error of CCD and wheel detector will greatly influence the precision of the wear measurement. A calibration system was designed for the...
The sIGAle code is developed by CEA LIST at the request of CEA DEN to analyse spectra measured with CdZnTe detectors. sIGAle is a specific automatic analysis software which allows a complete analysis of the spectrum, with automatic calibration, identification of radionuclides present in the spectrum, determination of fluence rates for each significant peak and, if the transfer function is known, calculation...
This paper provides information about device for overhead contact line height and stagger measurement. This device was developed in Department of mechatronics and electronics, University of Žilina in collaboration with Railways Researched and Developed Institute in Vrútky. The device is determined for overhead contact line continuous measurement. The based measured parameters are overhead contact...
The authors proposed the new approach to non-uniformity correction of microbolometer focal plane arrays in thermal cameras. This approach includes thermal drift compensation with the use of a filter, which is translucent for IR radiation, and it enables compensation of microbolometers' gain non-uniformity. The thermal drift correction coefficients are updated periodically without interrupting the...
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