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Kholodnykh P.V.,Great Technology
Proceedings of the 2017 IEEE Russia Section Young Researchers in Electrical and Electronic Engineering Conference, ElConRus 2017 | Year: 2017

The article discusses the use of structure-logical methods for finding vulnerabilities in the networks of generation and transmission of electricity. It is shown how to use special software to perform such analysis and assess the reliability and availability of energy transfer from sources to consumers without the need to construct fault trees or reliability block diagrams. In addition, the paper proposes a list of fault-tolerance indicators in order to assess the impact of different ratio failures on the efficiency of the power system and to obtain an estimate of survivability. The analysis consists of the following steps: preparation of structure-logical model of the object, automatic generation of logic equations, solving the system of equations, obtaining of list of the minimal cut sets failures and calculating estimates of reliability and survivability. © 2017 IEEE.


Zimmerman M.,Great Technology
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2017

Systems that require multiple coordinated sensors (including sensor fusion) used for ISR, navigation in degraded environments, or infrared countermeasures are constantly trying to increase throughput to carry higher resolution images and video in real-Time and with low latency. The need for ever higher throughput challenges system designers on every level, including the physical interface. Simply moving video efficiently from point to point or within a network in itself is a challenge. ARINC 818, the Avionics Digital Video Bus continues to expand into real-Time video applications because of its low latency, robustness, and high throughput capabilities. © 2017 SPIE.


Plastination is a process of preservation of anatomical specimens by a delicate method of forced impregnation with curable polymers like silicone, epoxy or polyester resins with vast applications in medical fields of study. Plastination is a technique of tissue preservation developed by Dr. Gunther von Hagens in 1977. In this process, water and lipids in biological tissues are replaced by curable polymers (silicone, epoxy, polyester) which are hardened, resulting in dry, odorless and durable specimens. In this technique it is possible for us to treat every part of the body and tissues to preserve it for educational purposes. Nowadays there are new and vast varieties of applications for plastination in the educational and cultural areas. This invention has been recognized as an artistic phenomena among many authors. This article will pay attention to the history, basic principles of methods and also various applications of the plastination during the brief period of its creation.


Hyman P.,Great Technology
Communications of the ACM | Year: 2012

As college tuitions soar, various online models vie to educate college students worldwide-at no cost. © 2012 ACM 0001-0782/12/12.


Patent
Great Technology | Date: 2010-02-24

A light emitting diode lamp includes a housing having a first side mounted with a conductive connecting head, and a second side opposite to the first side. The second side of the housing has a first mounting surface, and a tapered protrusion projecting outwardly from the first mounting surface and having at least one inclined second mounting face inclined with respect to the first mounting surface. A lighting unit includes a plurality of first light emitting diodes mounted on the first mounting surface of the housing, and a plurality of second light emitting diodes mounted on the second mounting face of the housing. A driving unit is disposed in the housing and is coupled to the lighting unit and the conductive connecting head for activating the lighting unit. A transparent cap body is mounted on the second side of the housing for covering the lighting unit.


The present invention discloses methods and devices for transmitting/obtaining identification information and positioning by visible light signal. The method for transmitting identification information of a light source by visible light signal, the method comprising: modulating, on the basis of the identification information to be transmitted, a driving signal of the light source to obtain a modulated driving signal for driving the light source to emit visible light signal having its level changed between a peak level and a bottom level with varied frequencies at different time points; and emitting the visible light signal having its level changed between a peak level and a bottom level with varied frequencies at different time points on the basis of the modulated driving signal, so as to transmit identification information corresponding to the varied numbers of bright or dark stripes shown in one or more images obtained from the visible light signal at one or more time points, which numbers are corresponding to the varied frequencies.


A pulse compression method for CHIRP signal and a wireless transceiver thereof; pulse compression processing of a cycle C_(k) has the following steps: analytically obtaining all instantaneous frequency components of instantaneous signals and then isolating out a corresponding amplitude; using storage spaces M_(n) to store the amplitude and phase of each of the instantaneous frequency components; setting T_(n) as a length of time from t_(n) to an end time of the corresponding cycle; calculating T_(n) according to formula T_(n) =T-t_(n); using another set of storage spaces M_(T) to rearrange amplitudes of the different instantaneous frequency components; storing the amplitude of each of the instantaneous frequency components in a set of T_(n) value corresponding storage spaces of M_(T) space; and accumulating overlapping amplitudes of instantaneous frequency components into another space in the storage spaces M_(T).


The present invention discloses methods and devices for transmitting/obtaining identification information and positioning by visible light signal. The method for transmitting identification information of a light source by visible light signal, the method comprising: modulating, on the basis of the identification information to be transmitted, a driving signal of the light source to obtain a modulated driving signal for driving the light source to emit visible light signal having its level changed between a peak level and a bottom level with varied frequencies at different time points; and emitting the visible light signal having its level changed between a peak level and a bottom level with varied frequencies at different time points on the basis of the modulated driving signal, so as to transmit identification information corresponding to the varied numbers of bright or dark stripes shown in one or more images obtained from the visible light signal at one or more time points, which numbers are corresponding to the varied frequencies.


The present invention discloses methods and devices for transmitting/obtaining information by visible light signal. The method for transmitting information by visible light signal from a light source comprising: modulating, on the basis of the information to be transmitted, a driving signal of the light source to obtain a modulated driving signal for driving the light source to emit visible light signal having its level changed between a peak level and a bottom level with varied frequencies at different time points; and emitting the visible light signal having its level changed between a peak level and a bottom level with varied frequencies at different time points on the basis of the modulated driving signal, so as to transmit information corresponding to the varied numbers of bright or dark stripes shown in one or more images obtained from the visible light signal at one or more time points, which numbers are corresponding to the varied frequencies.


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