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Sample records for hakuyo seigyo system

  1. Study on automatic tuning of ship`s PID regulators; Hakuyo seigyo system no gain jido chosei ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Nakatani, T. [Toyama Mercantile Marine College, Toyama (Japan); Otsu, K.; Moriyoshi, N. [Tokyo Univ. of Mercantile Marine, Tokyo (Japan); Okazaki, T. [Nagoya Institute of Technology, Nagoya (Japan)

    1996-12-31

    Proportional, integral and derivative (PID) controls are used for a steering system and a main engine control unit installed in a vessel. Among them, this paper describes effectiveness of a PID gain tuning method using a limit cycle by means of relay control which is safer and simpler than conventional limit sensitivity methods. The present method was applied to an actual marine control system to conduct an actual vessel experiment. As a result of applying the method to a bow azimuth control system using a rudder, a new azimuth setting was set with an overshoot of 1.6 degrees in a ten-degree azimuth changing experiment. With respect to direction maintaining steering performance, the present method was capable of controlling the direction at a speed loss to about 80% of the ship`s autopilot. As a result of applying the method to a bow azimuth control system using a bow thruster, direction maintaining and changing control was realized in a low speed range in which rudder effect is lost. As a result of applying it to a main engine governor system and performing control of main engine rotation speed, it was found possible to derive control gains in a safe state without applying an excessive load to the main engine both under load and no load conditions. 14 refs., 8 figs., 11 tabs.

  2. Control system for garbage disposition. Gomi shori seigyo system

    Energy Technology Data Exchange (ETDEWEB)

    Matsumoto, S.; Kaneko, H. (Fuji Electric Co. Ltd., Tokyo (Japan))

    1993-06-10

    This paper introduces the latest incinerator instrument control system (IICS), and pneumatic refuse transportation and optimal operation systems for incineration plants. Garbage disposition facilities have introduced discrete control systems and a centralized control system using computers, and structured an overall incineration plant control system containing incineration facilities, electric power generation facilities, and other facilities. The IICS comprises softwares packaging control functions required particularly for garbage disposition and a control system mounting the softwares. The optimal incineration plant operation system governs control data in each plant to execute efficient drives and operations mutually in various plants, and reflects the data to plant operation programs. The pneumatic refuse transportation system has large-diameter pipelines laid in a limited area to collect refuses pneumatically through refuse chutes installed in the area to transport them to a refuse collection center. 4 refs., 8 figs.

  3. Mine train control system by H{infinity} control; H{infinity} seigyo wo mochiita tanko makiage seigyo system

    Energy Technology Data Exchange (ETDEWEB)

    Ouchi, s. [Tokai University, Tokyo (Japan). Faculty of Engineering; Liu, K. [Chiba University, Chiba (Japan). Faculty of Engineering; Sato, S. [Fuji Electric Corporate Research and Development, Ltd., Kanagawa (Japan); Mita, T. [Tokyo Institute of Technology, Tokyo (Japan). Faculty of Engineering

    1998-03-31

    Mine train control system is consisted of a winder, a train which transports many people to minebottom, and a long wire rope which connects a winder and a train. The mine train control system reported in this paper is the system with the longest rope of about 6700m in the world. This system often generate a rolling of train when the train stops at the station when using conventional control. In conventional systems, two mine train control systems of the length of 1/2 of all mining galleries were used in order to ristrict the rolling. In these systems, change time was necessary. However, this change time become unnecessary by using a system with the length of 6700m. When using this system, it is the main subject how to control the bigger rolling . We solved the problem on the rolling control of this system by using H{infinity} control, and got the result that the travel time of the train made 2/3 compared with that of the conventional systems using two mine train control systems, and the train speed of 420m/min which is the maximum speed in the world was achieved. 7 refs., 8 figs.

  4. Improvement of diesel engine performance by hydraulically powered electronic control (mechatronics) system. Hakuyo diesel kikan no mechatronics system ni yoru seino kojo

    Energy Technology Data Exchange (ETDEWEB)

    Sonoda, K.; Nakamura, Y.; Kajima, T.; Sato, S.; Fujii, T.; Tobe, Y. (Kawasaki Heavy Industries, Ltd., Tokyo (Japan))

    1992-07-20

    This paper describes new hydraulically-actuated mechanisms for both fuel injection and inlet/exhaust valve operation of diesel engines through solenoid valves, which obviate the conventional cam-driven system. These mechanisms were integrated with an electronic control unit also developed in this study and they were mounted as a mechatronics system'' on a power-increased single-cylinder engine. This mechatronics system was mainly composed of an injection control. boost and accumulation component, an inlet and exhaust valve control component, a solenoid valve, an electronic control equipment, a hydraulic power unit, and a maneuvering unit. The verification test was carried out for the improvement of diesel engine performance by the hydraulically powered mechatronics system. As a result, it was proved not only that these mechanisms provide stable operating characteristics over a wide range of conditions, but also that the electronic control system allows accurate, smooth response. 3 refs., 23 figs., 2 tabs.

  5. Adaptive control in an aircraft propulsion system and system integration with flight control; Kokukiyo enigne - tekio seigyo gijutsu oyobi hiko seigyo tono togo

    Energy Technology Data Exchange (ETDEWEB)

    Nagatome, S.; Seo, N.; Negoro, T.; Kaneda, S.; Matsushita, T.; Kono, Y.; Kanbe, K.; Fujiwara, K. [Kawasaki Heavy Industries, Ltd., Kobe (Japan)

    2000-04-01

    Aircraft engine controllers incorporating computer technology have enabled the highly automated control of the entire engine system, and consequently have been put to practical use as Full-Authority Digital Electronic Control (FADEC). In future such FADEC technology will be evolved and combined into an Integrated Flight and Propulsion Control (IFPC) system which will automatically optimize the whole aircraft propulsion system. In this paper the application of the adaptive control, part of the IFPC technology, is described. (author)

  6. Instrumentation/control systems for food and medicine plants; Shokuhin yakuhin plant no keisoku seigyo system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-01-10

    The food and medicine industries have been steadily investing facilities for producing new products and improving production efficiency, while coping with the problems associated with superannuated facilities. Fuji Electric has been supplying a new controlling system FOCUS, characterized by its capacity of minimizing cost and openness, since the fall of 1996. It has been adopted by a number of facilities as the monitoring/controlling system, becoming one of the favorite products of the related industries. The FOCUS system developed by the company, which has been supplying a variety of flexible network systems for controlling purposes, easily allows integration of the systems with office LAN`s. This leads to increased proposals for integrated information systems beyond the conventional concept of monitoring/controlling systems, and changed system businesses. (NEDO)

  7. Automatic control systems of daylighting and artificial lighting; Saiko shomei setsubi no seigyo system

    Energy Technology Data Exchange (ETDEWEB)

    Saito, M. [Obayashi Corp., Tokyo (Japan)

    1997-06-05

    Means for controlling illumination include a blind for adjusting the light coming directly from the sun, system for maintaining environmental comfort by controlling light-modulating glass and the like, labor-saving system incorporating a control center governing multiple buildings in the vicinity, and system intended for improved energy efficiency. Energy saving efforts include an occupancy sensor control for the automatic turn-on/off of lighting by detecting the presence or absence of people in a chamber, optimum lighting control using sensors for adjusting illumination to the designed level, time-scheduled control for the turning-on/off of lighting according to the time of the day, daylight utilizing control for adjusting artificial lighting according to the amount of incident daylight, guidance light control system for turning on guidance lights upon sensing a decrease in incident daylight. Other than these, there are controls of lighting for performance and demonstration. Examples of practical application include the system adopted by Museum of Contemporary Art, Tokyo, for keeping incident light homogeneous, and the optimum illumination control and daylight utilizing control of Research & Development Center, The Tokyo Electric Power Co., Ltd. 8 refs., 10 figs.

  8. Berthing control with multi-agent system; Multi agent system ni yoru chakusan seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Ito, H. [Tokyo Univ. (Japan)

    1998-12-31

    The berthing of a ship is a kind of control operations of position, speed and direction of a ship in order to bring a ship alongside a quay. Berthing control is accompanied with a hard problem in which the 6 freedoms of position and speed in 3 directions such as fore and behind, right and left and a revolution must be controlled. In this study, a concept of the agent was introduced as a means of berthing. The agent is a computer program which can be worked in a person`s place. If an autonomous intelligence is carried on each element such as a tugboat or a propeller of ship, the element is able to act based on judgement decided by itself without an instruction from a control center. Thereby, the berthing control system as a multi-agent system having an adaptability and a cooperativeness will be realized. Then the multi-agent system to help berthing was constructed by applying the Muller`s three phase model as a cooperative autonomous agent and by sharing the role of each phase. 8 refs., 12 figs., 1 tab.

  9. Novel control strategies of HVDC system with self-commutated converter. Jireishiki henkanki wo tekiyoshita HVDC sytem ni okeru tanshi seigyo to kyocho seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Tokiwa, Y.; Ichikawa, F.; Suzuki, K. (Tokyo Electric Power Co. Inc., Tokyo (Japan)); Inokuchi, H.; Hirose, S.; Kimura, K. (Toshiba Corp., Tokyo (Japan))

    1992-01-20

    This report describes new control strategies of a self -commutated converter applied to the HVDC systems; that is, the cooperative control for a two-terminal transmission system and the terminal control which is applicable to a multi-terminal system. The DC voltage control with an upper and lower power-limiter showed excellent characteristics when applied to the two- terminal transmission system. A voltage margin method was also introduced as a power flow reversal method. These terminal control methods, if required, are able to change interchange power at the receiving end in the case of fault in the communication system. Moreover, the DC voltage control with two-stage voltage control characteristics was proposed for the multi-terminal HVDC system. with this mehtod, the DC transmission system can be operated continuously and stably cooperating electric power at each terminal even when one terminal is collapsed. The terminal control performance in the above two-terminal HVDC system was tested with a simulator. The result showed favorable performance characteristics at the time of power flow reversal and one terminal start-up during other terminal operation. 5 refs., 16 figs.

  10. Control of mechatronic systems using electrorheological fluids; ER ryutai wo mochiita mekatoronikusu kiki no seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Furusho, J. [The Univ. of Electric Communications, Tokyo (Japan)

    1995-09-10

    ER fluids (electrorheological fluids) are fluids whose rheological properties vary due to an electric field, and at the present, its development is being vigorously carried forward with the objective of its application to various mechanical systems. The ER fluids which are the objects for its development are two kinds, namely ER suspensions and homogeneous fluids using liquid crystals. Concerning the ER suspensions, its study started from the latter half of 1940`s, but the history of studying the homogeneous ER fluids is short. In this article, comparison is made between the ER suspensions and the homogeneous ER fluids. Regarding the comparison in their application fields, several differences are enumerated including that the response time of the ER suspensions to the change of the electric field is considerably faster than the homogeneous fluids using liquid crystals. As examples of the application of the ER suspensions, ER valves, application to automobiles, ER dampers, vibration control of structures, and ER clutches are shown and likewise, as examples of the application of the homogeneous ER fluids, robot arm control, dampers, etc.. Also its application to robotics is described. 51 refs., 8 figs., 1 tab.

  11. Development of an active noise control system with minimized amount of calculation; Shoenzan ryogata active soon seigyo system no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Nakamura, M. [Hitachi, Ltd., Tokyo (Japan); Sasaki, M.; Hori, Y. [Gifu University, Gifu (Japan); Fujisawa, F. [Hachinohe Institute of Technology, Aomori (Japan); Sumida, I. [Chubu University, Nagoya (Japan)

    1997-12-20

    This paper proposes an active noise control system with minimized amount of calculation for periodic noise. A modified algorithm based on the filtered-x adaptive notch filter is applied on the diesel engine noise generate d in the cabin of an all-terrain vehicle. Diesel engine noise is periodic and includes some harmonic components due to engine rotation. Numerical simulation results using measured data indicated that the proposed system could be controlled by using fewer calculations compared to the conventional system. The controller was made using an eight bit microcomputer without a digital signal processor and installed in the vehicle. Results of the driving tests achieved a large noise reduction for some harmonic components, second, fourth and sixth order components. This shows that the control system is effective for noise reduction. 5 refs., 8 figs., 6 tabs.

  12. Measurement and control system for a fuel supply plant at an airport; Kuko kyuyu plant no keisoku seigyo system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-01-10

    Air transportation demand is increasing internationally both for passengers and cargoes. A number of Asian countries intend to have a hub airport for Asia, and moving forward building new airports and expanding the existing airports. In the area of airport fuel supply, Fuji Electric has received an order from the Inchon International Airport Public Corporation of Korea a measurement and control system, and is making adjustments at site now. This system is a high-reliability open system which links the controller (ICS-2000), FOCUS, and a UNIX computer by the information LAN and the control LAN according to Ethernet, and duplicates the control LAN. On the other hand, the system has such functions as control of aircraft fuel from receiving from a pipeline to filling it into a storage tank, control of rotation speed of delivery pumps and control of the number thereof for operation, thus attempting automation of fuel supply to aircraft. (translated by NEDO)

  13. Study of design factors of vehicle headlamp control systems; Zenshoto seigyo system no hyoka shuho no kento

    Energy Technology Data Exchange (ETDEWEB)

    Kamishima, H.; Miwa, T.; Sasaki, T.; Imai, M. [Nissan Motor Co. Ltd., Tokyo (Japan); Sumi, T. [Niles Parts Co. Ltd., Tokyo (Japan)

    1997-10-01

    The on-and-off timing of vehicle headlamp control systems varies with weather conditions. Cloudy weather has a wider light energy distribution from visible to infrared radiation than clear weather. Silicon photodiodes, which can detect visible to infrared radiation, have larger output currents on cloudy evenings than on clear evenings under the same brightness conditions. The systems should be designed with such factors in mind as spectral characteristics of windshield, filters, sensor, and eyesight. 4 refs., 9 figs.

  14. Autonomous navigation of the vehicle with vision system. Vision system wo motsu sharyo no jiritsu soko seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Yatabe, T.; Hirose, T.; Tsugawa, S. (Mechanical Engineering Laboratory, Tsukuba (Japan))

    1991-11-10

    As part of the automatic driving system researches, a pilot driverless automobile was built and discussed, which is equipped with obstacle detection and automatic navigating functions without depending on ground facilities including guiding cables. A small car was mounted with a vision system to recognize obstacles three-dimensionally by means of two TV cameras, and a dead reckoning system to calculate the car position and direction from speeds of the rear wheels on a real time basis. The control algorithm, which recognizes obstacles and road range on the vision and drives the car automatically, uses a table-look-up method that retrieves a table stored with the necessary driving amount based on data from the vision system. The steering uses the target point following method algorithm provided that the has a map. As a result of driving tests, useful knowledges were obtained that the system meets the basic functions, but needs a few improvements because of it being an open loop. 36 refs., 22 figs., 2 tabs.

  15. Development of ACC system for heavy-duty trucks; Ogata truck yo shakan seigyo kuruzu control no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Hirayama, S.; Shibata, N. [Hino Motors, Ltd., Tokyo (Japan); Okata, H.; Matsuoka, K. [Denso Corp., Aichi (Japan)

    1999-01-01

    This paper presents ACC (Adaptive Cruise Control) system for heavy duty trucks which is now on the market. The ACC system consists of the distance warning system with a scanning laser radar device and the conventional cruise control system. The ACC is carefully tuned taking the characteristics of heavy-duty trucks into consideration. That has made it possible to achieve lower degree of driver`s fatigue as well as higher ride comfort and easier driving. (author)

  16. Fuzzy decentralized control for three-machine electric power model system; Sanki model keito no fuzzy bunsan seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Kawamoto, S.; Takino, K. [Osaka Prefectural University, Osaka (Japan); Nojiri, K. [Kansai Electric Power Co. Inc., Osaka (Japan)

    1996-11-20

    In order to maintain the high reliability and security of electric power systems, the problem for stabilizing control is thought to be one of important subjects. Also, for the control of complex large scale nonlinear system like power system, decentralized control is preferable to centralized one. Therefore, the field of decentralized technology is much expected for the future power system. In this paper, a three-machine power model system is treated as an example, and first a decentralized system is constructed on a basis of the swing data by looking over the whole system at the largest generator bus. Next, the decentralized system is rewritten into a form of fuzzy system, and the stability theorem is applied to it. Then, feedback gains of the fuzzy control input can be determined under the guarantee of the stability, and the control input is given to the generator. Similarly, for the second generator, the decentralized system is obtained, and so on. Finally, it is shown that the decentralized control is constructed by using swing data based on three different faults, and is also available for another fault in the simulation. 10 refs., 10 figs., 1 tab.

  17. Trends in electronic technologies for industrial electric power control and protection systems; Kanshi seigyo hogo sytem no doko to denshika

    Energy Technology Data Exchange (ETDEWEB)

    Goto, K.; Kurihara, H.; Nakamura, S. [Toshiba Corp., Tokyo (Japan)

    1996-08-01

    For Toshiba`s industrial power receiving and transforming facilities, developments have been made on switchgear multi-relays, transfer systems, concentrated surveillance systems and digital protection relay systems to achieve realization of high-level and close surveillance, control and protection. This paper introduces representative models of these systems and devices. Application of microprocessors and liquid crystal display units is rapidly progressing for surveillance and control devices which are installed in power receiving rooms to monitor and control power receiving and transforming systems from the side of these devices. In the protection relay systems, items of the hardware are standardized, and those of the software are designed in response to protection requirements to provide various relay characteristics and protection sequence functions. Also in the switchgears, combined digital type switchgears are used widely. Systems have been structured being focused mainly not only on functions to collectively monitor and control power systems in factories, but also improve efficiency of output and energy operation such as of steam. 2 refs., 7 figs., 1 tab.

  18. Power control of induction generator by V/F control for wind energy conversion system; Kahensoku furyoku hatsuden system yo yudo hatsudenki no V/F seigyo ni yoru shutsuryoku seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Horiuchi, N.; Kawahito, T. [Takamatsu National College of Technology, Kagawa (Japan)

    1998-10-01

    Converter-excitation of cage induction generator has emerged as a suitable candidate for low cost variable speed Wind Energy Conversion System, because the converter can also transfer output energy from the generator to electrical load. If a suitable control method is applied to the variable voltage and variable frequency excitation of the generator, highly efficient energy conversion will be achieved. The present paper deals with static characteristics of the induction generator, where its output power is controlled using Voltage/Frequency ratio control scheme. The output power is also controlled in accordance with maximum power characteristics of fixed blade pitch wind turbines. High efficiency is achieved by the control over wide shaft speed variation. The paper also develops an analytical method to know these characteristics. 14 refs., 8 figs., 1 tab.

  19. Design and model experiments on thruster assisted mooring system; Futaishiki kaiyo kozobutsu no thruster ni yoru choshuki doyo seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Nakamura, M.; Koterayama, W. [Kyushu Univ., Fukuoka (Japan). Research Inst. for Applied Mechanics; Kajiwara, H. [Kyushu Institute of Technology, Kitakyushu (Japan). Faculty of Computer Science and System Engineering; Hyakudome, T. [Kyushu University, Fukuoka (Japan)

    1996-12-31

    Described herein are dynamics and model experiments of the system in which positioning of a floating marine structure by mooring is combined with thruster-controlled positioning. Coefficients of dynamic forces acting on a floating structure model are determined experimentally and by the three-dimensional singularity distribution method, and the controller is designed by the PID, LQI and H{infinity} control theories. A model having a scale ratio of 1/100 was used for the experiments, where 2 thrusters were arranged in a diagonal line, one on the X-axis. It is found that the LQI and H{infinity} controllers of the thruster can control long-cycle rolling of the floating structure. They allow thruster control which is insensitive to wave cycle motion, and efficiently reduce positioning energy. The H{infinity} control regulates frequency characteristics of a closed loop more finely than the LQI control, and exhibits better controllability. 25 refs., 25 figs.

  20. Design and model experiments on thruster assisted mooring system; Futaishiki kaiyo kozobutsu no thruster ni yoru choshuki doyo seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Nakamura, M.; Koterayama, W. [Kyushu Univ., Fukuoka (Japan). Research Inst. for Applied Mechanics; Kajiwara, H. [Kyushu Institute of Technology, Kitakyushu (Japan). Faculty of Computer Science and System Engineering; Hyakudome, T. [Kyushu University, Fukuoka (Japan)

    1996-12-31

    Described herein are dynamics and model experiments of the system in which positioning of a floating marine structure by mooring is combined with thruster-controlled positioning. Coefficients of dynamic forces acting on a floating structure model are determined experimentally and by the three-dimensional singularity distribution method, and the controller is designed by the PID, LQI and H{infinity} control theories. A model having a scale ratio of 1/100 was used for the experiments, where 2 thrusters were arranged in a diagonal line, one on the X-axis. It is found that the LQI and H{infinity} controllers of the thruster can control long-cycle rolling of the floating structure. They allow thruster control which is insensitive to wave cycle motion, and efficiently reduce positioning energy. The H{infinity} control regulates frequency characteristics of a closed loop more finely than the LQI control, and exhibits better controllability. 25 refs., 25 figs.

  1. Study on molecular controlled mining system of methane hydrate; Methane hydrate no bunshi seigyo mining ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Kuriyagawa, M.; Saito, T.; Kobayashi, H.; Karasawa, H.; Kiyono , F.; Nagaoki, R.; Yamamoto, Y.; Komai, T.; Haneda, H.; Takahashi, Y. [National Institute for Resources and Environment, Tsukuba (Japan); Nada, H. [Science and Technology Agency, Tokyo (Japan)

    1997-02-01

    Basic studies are conducted for the collection of methane from the methane hydrate that exists at levels deeper than 500m in the sea. The relationship between the hydrate generation mechanism and water cluster structure is examined by use of mass spectronomy. It is found that, among the stable liquid phase clusters, the (H2O)21H{sup +} cluster is the most stable. Stable hydrate clusters are in presence in quantities, and participate in the formation of hydrate crystal nuclei. For the elucidation of the nucleus formation mechanism, a kinetic simulation is conducted of molecules in the cohesion system consisting of water and methane molecules. Water molecules that array near methane molecules at the normal pressure is disarrayed under a higher pressure for rearray into a hydrate structure. Hydrate formation and breakdown in the three-phase equilibrium state of H2O, CH4, and CO2 at a low temperature and high pressure are tested, which discloses that supercooling is required for formation, that it is possible to extract CH4 first for replacement by guest molecule CO2 since CO2 is stabler than CH4 at a lower pressure or higher temperature, and that formation is easier to take place when the grain diameter is larger at the formation point since larger grain diameters result in a higher formation temperature. 3 figs.

  2. Robust stabilization control of power system based on the direct control of generator power by series variable impedance unit; Chokuretsu kahen inpidansu wo mochiita hatsudenki denryoku no chokusetsu seigyo ni yoru robasuto keito anteika seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Hojo, M.; Mitani, Y.; Tuji, K. [Osaka University, Osaka (Japan)

    1997-06-20

    Advanced control system design method (whose application is believed to be difficult in practical use) with the advancement of technologies of power system stabilization controllers has received much attention. In particular, demand of stabilizing control system with high robustness is pointed out. Construction of linearization control system is proposed based on direct operating volume of electric output power`s generator using the series variable impedance unit in this paper. The results are summarized as follows. Based on direct control aim of a generator power out of system of controllers with reference to the swing characteristics of power generator under specification, a linearized control is manufactured. Proposed control based on simple construction using variable impedance unit which is connected continuously with transmission line is realized. Linear system which keeps eigen values pointed out by designers who predicts based on the use of proposed controller is obtained. 6 refs., 11 figs., 2 tabs.

  3. Nonlinear system control by extended feedback system with forward model; Jun moderu wo riyoshita kakucho fido bakku kei ni yoru hisenkei system no seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Oyama, E. [Mechanical Engineering Lab., Tsukuba, Ibaraki (Japan); Tachi, S. [Tokyo Univ. (Japan). Faculty of Engineering

    1995-11-30

    For controlling a nonlinear system with unknown characteristics, utilization of learning elements such as multi-layer neural networks has been studied. For such control, the techniques of control by learning an inverse model of the target system have been proposed, but there are many drawbacks to obtain an inverse model. The technique to calculate a control command by using a forward model is based on iterative methods, including the Newton`s method, which are based on local information, and there could be the cases when the precise control command cannot be calculated including the case when it converges to the local optimal solutions. In this paper, as the control technique of a discrete nonlinear system with unknown characteristics, the control method by an extended feedback system utilizing a forward model of the target system and the utilization technique of the inverse model have been proposed and their effectiveness have been shown by simulation. In case when an inverse model is not available or in case when an inverse model has not been learned, the search for the initial value and the iterative methods are repeated in calculating control signals by the extended feedback system, but this will be avoided thanks to the improvement of the computer capacity. 16 refs., 11 figs.

  4. FY1995 distributed control of man-machine cooperative multi agent systems; 1995 nendo ningen kyochogata multi agent kikai system no jiritsu seigyo

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    In the near future, distributed autonomous systems will be practical in many situations, e.g., interactive production systems, hazardous environments, nursing homes, and individual houses. The agents which consist of the distributed system must not give damages to human being and should be working economically. In this project man-machine cooperative multi agent systems are studied in many kind of respects, and basic design technology, basic control technique are developed by establishing fundamental theories and by constructing experimental systems. In this project theoretical and experimental studies are conducted in the following sub-projects: (1) Distributed cooperative control in multi agent type actuation systems (2) Control of non-holonomic systems (3) Man-machine Cooperative systems (4) Robot systems learning human skills (5) Robust force control of constrained systems In each sub-project cooperative nature between machine agent systems and human being, interference between artificial multi agents and environment and new function emergence in coordination of the multi agents and the environment, robust force control against for the environments, control methods for non-holonomic systems, robot systems which can mimic and learn human skills were studied. In each sub-project, some problems were hi-lighted and solutions for the problems have been given based on construction of experimental systems. (NEDO)

  5. Instrumentation/control systems for small- to medium-size steel-making plants; Tekko setsubi chusho plant no keisoku seigyo system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-01-10

    Fuji Electric has realized highly reliable and functional control systems by the dispersion type control system FOCUS, which uses the controller (ICS-2000) enjoying good reputation in controlling industrial plants for a long time and a personal computer with high windows operability, the former for controlling and the latter for MHI responsible for monitoring. The smelting process in a steel-making plant needs a highly reliable system for advanced control to ensure continuous operation. Fuji Electric delivered the FOCUS system to Kubota in 1998, as the smelting furnace instrumentation/control system for the cupola furnace. The system has been in service smoothly. Moreover, a total of four control systems have been delivered, 2 for steel-making furnaces and the other 2 for continuous casting. (NEDO)

  6. Direct control of stabilization for nonlinear systems using power state feedback; Hisenkei system no beki jotai feedback ni yoru chokusetsutekina anteika seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Okubo, S. [Yamagata Univ. (Japan)

    1998-11-30

    The design method for stabilization of nonlinear systems by direct feedback without using evaluation function is shown. This method is a very important controlling method which is the basis for nonlinear system control, and it is expected to be applied to very wide fields. It is made clear that numerical solution is not possible because the number of equations exceeds that of variables in the extended Lyapunov equation which becomes an equation for the design. There is no concept of pole of linear system in nonlinear systems although stabilization of nonlinear system is natural extension of stabilization of linear system in case of using Lyapunov function. Numerical difficulty is avoided by the use of genetic algorithm in the design calculation, and strict designing with finite degree becomes possible as a result. This method can design strictly nonlinear feedback control law of bounded power degree to stabilize globally nonlinear system of odd highest degree polynomial. The effectiveness of this system is shown an instance of numerical calculation. 5 refs., 6 figs.

  7. Fiscal 1997 report on the results of the international standardization R and D. Robot control system; 1997 nendo seika hokokusho kokusai hyojun soseigata kenkyu kaihatsu. Robot seigyo system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    R and D of the robot control system was conducted in the following items: 1) integrated open control system, 2) remote control robot manipulation language, 3) human factor robot use built-in LAN system, 4) built-in actuator driver. In 1), there were some problems to be pointed out around the system, but the effectiveness was confirmed as system architecture of each verification item. In 2), development/design were made of RCML(R-Cube Manipulation Language) as a remote robot manipulation language, telecommunication protocol, and the experimental system, and the international standardization was targeted. In 3), the R and D was conducted of the realtime telecommunication protocol which clears the standards for the distributed control required for construction of human factor robot and the advanced realtime micro-controller, ULSI, which is the one that the protocol was made IC. In 4), an intelligent connector for built-in actuator was developed which enables saving of wiring in robot system and plug-in connection. 13 refs., 186 figs., 53 tabs.

  8. Application of MPEG/ITV surveillance system to plant surveillance and control field; MPEG 2 ITV kanshi system no plant kanshi seigyo bun`ya eno tekiyo

    Energy Technology Data Exchange (ETDEWEB)

    Iijima, W.; Mitera, T. [Meidensha Corp., Tokyo (Japan)

    1999-04-23

    Meidensha, Inc. has realized ITV surveillance function by employing the asynchronous transfer mode (ATM) system as one of the utilization modes of wide area network and by transmitting surveillance and control data, as well as image and voice data. The system has the following features: because this ITV surveillance system has adopted MPEG2 for compression and expansion of image information, high definition image surveillance is possible; because image information is digitized and compressed, both of the data system and voice system can be accommodated in the same network; and because of adoption of environment resistant and high reliability industrial personal computer for the platform of this device, continuous operation is possible for an extended period of time. The ITV surveillance device transmits commands selected on the operation panel to an ITV control server, monitors responses from the ITV control server, and at the same time, decodes the MPEG2 image information from the ITV control server to display the images on the monitor. (NEDO)

  9. Improvement of adaptive fuzzy control for a photovoltaic/wind/diesel generating system; Taiyoko/furyoku/diesel hatsuden system no saitekigata fuzzy seigyo no kairyo

    Energy Technology Data Exchange (ETDEWEB)

    Nagaike, H.; Kenmoku, Y.; Sakakibara, T. [Toyohashi University of Technology, Aichi (Japan); Nakagawa, S. [Maizuru National College of Technology, Kyoto (Japan); Kawamoto, T. [Shizuoka University, Shizuoka (Japan).Faculty of Engineering

    1996-10-27

    The photovoltaic/wind/diesel generating system that uses a storage battery as auxiliary power has been proposed to supply power from the system to the independent area. In this system, it is important to generate no insufficient power from the viewpoint of effective energy utilization and minimize the fuel consumption of a diesel generator. Authors have proposed the adaptive fuzzy control that changes the shape of the membership function of input variables according to the parameter indicating the system state. However, a parameter was rapidly changed in the conventional method. This badly influences the control. Therefore, the way to determine the parameter that indicates the state of this system was improved. Assume that an input value is set to the average value between a certain point of time and the {Delta}t time as the method for determining a parameter. If the {Delta}t value is lower, the change in a membership function is more effective. As a result, a greater fuel reduction effect was obtained. 4 refs., 8 figs., 1 tab.

  10. On the muscle activity control in the hierarchy motor systems. Hierarchy undo system ni okeru kin no kassei seigyo ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Akiba, M.; Miyamoto, Y. (Osaka Industrial University, Osaka (Japan). Faculty of Engineering)

    1991-10-31

    Excitory impulses for motor systems are controlled by the psychophysiological nervous systems in the body either autonomically or voluntarily. Involved in the voluntary control loop are motor cortex, basal gangalia, thalamus, cerebellum, etc. The purpose of this study is to confirm whether it is possible to reduce or emphasize the muscle contraction voluntarily through electromyogram (EMG) feedback training. EMG can indicate the excitory impulses of motor units. In the experiments, electrodes were placed on the skin above muscles. A significant reduction effect was observed for subjects trained in relaxation of the forehead musculature through EMG feedback. Results of the experiments suggested that biofeedback training for relaxation of the forehead tensional muscle might be effective in eliminating muscle contraction, and that feedback training for activation of damaged muscles might be effective in emphasizing muscle contraction. 4 refs., 9 figs.

  11. Starting and stopping control on power conditioner in photovoltaic power system; Taiyoko hatsuden system ni okeru power conditioner no kido teishi seigyo ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Hirose, M.; Ishihara, Y.; Todaka, T.; Harada, K. [Doshisha University, Kyoto (Japan); Oshiro, H.; Nakamura, H. [Japan Quality Assurance Organization, Tokyo (Japan)

    1997-11-25

    Studies are made about the control of the power conditioner over the maximum power point tracking (MPPT) function in a photovoltaic power generation system. The analysis is conducted by means of computer simulation into the effect of a start/stop function added to the control of MPPT and the effect on the generation of power of the setting of parameters in the start/stop function. The reduction in output power due to difference between the actual operation point and the optimum operation point is evaluated by use of a load matching correction factor. In this simulation, it is assumed that the solar cell array consists of 13 rows in 5 parallel columns, is capable of a normal output of 3.149kW, has a panel tilted at 30 degrees, and faces due south. The power conditioner is assumed to be a system rated at 3kVA, equipped with system interconnection and back flow features. As a result, it is learned that the stop voltage should be set at 180V or lower and the steady voltage near 185.5V for a good result and that there is not much need after all for the start/stop technique. 2 refs., 8 figs., 2 tabs.

  12. Power system stabilizing control by superconducting magnetic energy storage using neural network; Newral network wo mochiita chodendo energy chozo sochi ni yoru keito anteika seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Osawa, Y.; Kanemitsu, T.; Kawakami, T.; Shintaku, M.; Arai, K. [Kobe University, Kobe (Japan)

    1993-10-20

    In order to solve the difficulty of realizing power system stabilization using non-linear optimal control, this paper discusses a power system stabilization control by superconducting magnetic energy storage (SMES) using a neural network. This system consists of a kind of feedback control system that derives an optimal stabilizing control on various initial system operating conditions and failure conditions applied with the maximum principles, and learns the best stabilization using the control as tutorial signals and using the neural network. The object model system is a one-unit infinite busbar system, whose generator terminal is installed with the SMES. With respect to the system learning using the neural network, the network output to the learned failure patterns has agreed with the tutorial signals nearly completely. As a result of simulating example systems, it was confirmed that the operating conditions within a reasonable range and failure conditions were learned well, control effects close to the optimal control were shown, and the oscillation suppressing effect of the SMES can be utilized effectively. 11 refs., 13 figs., 4 tabs.

  13. Application of computer technology for control system in distribution network; Haiden keito un`yo seigyo eno denshi gijutsu no tenkai

    Energy Technology Data Exchange (ETDEWEB)

    Sugiyama, H. [Chubu Electric Power Co. Inc., Nagoya (Japan)

    1996-09-20

    This paper describes the course of history and the future trend in a transmission line automation system. A system to remotely control section switches was begun installation around 1985. The system was intended to reduce number of personnel and amount of time required for works at sites, perform immediate system operation, acquire a real-time site information for a distribution network operation instructor, and have the instructor make quick, proper and accurate determination by using the acquired information. This system remotely monitors and controls section switches in distribution lines, and consists of a `parent station equipment` installed in a sales office, a `child station equipment` installed in combination with the section switches, and a `communications transmission path`. The parent station equipment is a computer system. The child station equipment is installed at every section switch to link the parent station equipment with the section switches. Pair cables are used in signal transmission. A map information indication and automatic execution system of wide area operation handling type has now begun operation. The system is expected of wider use in the future as a system applicable to urban areas where distribution networks are congested. 6 refs., 8 figs.

  14. SVC control method to improve the stability of power systems applying fuzzy control. Fuzzy seigyo wo riyoshita SVC ni yoru denryoku keito no anteika seigyoho

    Energy Technology Data Exchange (ETDEWEB)

    Uezato, K.; Senju, T.; Shiroma, T. (University of the Ryukyus, Okinawa (Japan))

    1994-03-01

    The SVC (static var compensator) control method featured by fuzzy control is proposed to improve the stabilization of power systems. The method is applicable to a simple single-machine infinite bus system, and SVC is allocated at the center of a transmission line to keep the line terminal voltage constant. The SVC controller is composed of the PI controller to keep the terminal voltage constant and the fuzzy controller-1 parallel to the PI controller for determining SVC admittances to suppress system fluctuation. The fuzzy controller-2 switches control between stabilizing control during system fluctuation and constant voltage control in normal operation. The fuzzy rules are remarkably simple because those are constructed qualitatively on the basis of sliding mode control. System fluctuation can be also reduced rapidly by using not only the terminal information such as terminal voltage and power flow on an interconnection line but also the generator information such as load angle and slip. 10 refs., 24 figs., 7 tabs.

  15. Temperature control of a heat exchanger for the photosensitive materials coating and drying process; Kanko zairyo tofu kanso purosesu ni okeru kucho system no ondo seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Kido, K.; Sato, N.; Shimoji, M. [Konica Co. Ltd., Tokyo (Japan). Production Engineering Center; Nakanishi, E. [Kansai Univ., Suita, Osaka (Japan). Faculty of Engineering

    1997-11-01

    A feedforward/feedback control system was developed to maintain the temperature profile of air in an air conditioning system for photosensitive material coating and drying. The feedforward control was attained based on a heat exchanger dynamic model using the flow rate of hot water as the manipulated variable and the air temperature as the controlled variable, while feedback control was performed by means of optimum control theory based on a linearized heat exchanger dynamic model. To evaluate the performance of the control system developed in this study, simulation and experimental studies were carried out where a stepwise change of set values is performed in order to maintain uniform production quality for each product grade. It is shown that the control system under consideration successfully controls air temperature in an air conditioning system for photosensitive material coating and drying. 4 refs., 7 figs.

  16. Improvement of power system stability by high speed power control of adjustable speed machine; Kahensokuki no koshutsuryoku seigyo ni yoru denryoku keito no anteido kojo

    Energy Technology Data Exchange (ETDEWEB)

    Nojiri, K.; Kikuchi, T.; Nakagawa, H. [Kansai Electric Power Co. Inc., Osaka (Japan); Goto, M. [Hitachi, Ltd., Tokyo (Japan); Nohara, H. [Hitachi Nuclear Engineering Co. Ltd., Tokyo (Japan)

    1997-01-20

    Large capacity adjustable speed machines (ASMs) at pumped storage power station have been put into full operation and the operating characteristics of ASM have been highly evaluated from the view point of power system operation. The output power (input power) of ASM can be controlled very quickly by applying a vector control scheme to the excitation control. This quick responsive feature of ASM can make it possible to improve the stability of the neighbor sub-power system. For improvement of transient stability, the output power of ASM is reduced very quickly in order to control the acceleration of neighbor generators during and after transmission line faults. For improvement of dynamic stability, the output power of ASM is modulated in accordance with the stabilizing signals detected from the swing of generator rotor or the power flow fluctuation on the transmission line. This paper describes the design concepts and method of control system for improving the transient and dynamic stability and proposes a power system stabilizing control system. The effects of the proposed stabilizing control system have been verified by a power system simulator. 9 refs., 15 figs., 1 tab.

  17. H{infinity} control with exact linearization for AC drive system with CSI; Genmitsuna senkeika wo mochiita denryugata inverter kudo yudo dendokikei no H{infinity} seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Bai, Z.; Ide, K.; Yong, Z.; Tsuji, T. [Kyushu Institute of Technology, Kitakyushu (Japan)

    1994-11-20

    This paper reports the following method for controlling the vector of a current system inverter driven induction motor. The method deals with parameter variation in the control object and modeling error by using the H{infinity} control on its approximated linear model (in the vicinity of the equilibrium point), and handles disturbances including load variation by broadening the effective region in the linear model via close linearization of the state space. The paper explains specifically a design of a speed controller through modeling the control system of the induction motor including the current system inverter (connected to a converter), close linearization of the resultant nonlinear model (using rotation angle speed of the induction motor and DC link current as the state vectors, and using the output voltage of the converter as a scaler input), and application of the H{infinity} theory. In addition, the paper presents the result of an experiment that verified good control performance of the designed controller. 11 refs., 8 figs., 1 tab.

  18. Maximizing output power of wind turbine generator by output current control. Shutsuryoku denryu seigyo ni yoru furyoku hatsuden system no denryoku saidaika

    Energy Technology Data Exchange (ETDEWEB)

    Kawahito, T. (Takamatsu National College of Technology, Kagawa (Japan)); Suzuki, T. (Tokushima University, Tokushima (Japan))

    1994-03-20

    This paper reports a method in a wind power generation system to control output current from a generator so that it fits automatically the wind turbine characteristics where the turbine characteristics are unknown and the generator characteristics are known. The paper details the following methods: a method that rotation speed of a wind turbine is observed to make the output current from the generator proportional to a square of the turbine rotation speed, and optimize the proportion coefficient so that the generator output at an equilibrium operation point of this system (wind turbine generated torque is in equilibrium with the generator driven torque) is maximized; and a method to derive an optimal proportion coefficient in discrete time control using a digital computer. The paper then describes the following matters: a simulation that assumes a pseudo natural wind velocity has verified the effectiveness of this control method; discovering an optimal proportion coefficient has required about ten minutes; and the way this control method handles fluctuation in wind velocity has a room of further improvement. 16 refs., 10 figs., 1 tab.

  19. Extra-low-noise refrigerator with active noise control system, GR-W40NVI. Nodo seigyo choseiongata reizoko GR-W40NVI

    Energy Technology Data Exchange (ETDEWEB)

    Sekiguchi, Y.; Nakanishi, K.; Saruta, S. (Toshiba Corp., Tokyo (Japan))

    1991-04-20

    Aiming at lowering the noise down to a domestic background noise level, development was made of GR-W40NVI, extra-low-noise refrigerator with an active noise control system. The active control for lowering the noise is methodically to artificially generate sound, reverse in phase against the noise to be generated, silence it by acoustic wave interference, and theoretically reduce the acoustic pressure to zero. Such a technology was applied to the refrigerator morphologically as follows: In order to silence the noise, generated by the compressor and three-dimensionally diffused, by a simple structure, duct structure is applied for the noise to be diffused in one direction only, by acoustically insulating and confining the compressor with exception of its thermal exhaust opening. In order to lower the noise, generated by the compressor and amplified in zonal region, the active control is applied against the low frequency noise, while the conventional acoustic insulation/absorption technology is done against the high frequency noise. In order to quickly and accurately prepare sound, reverse in phase against the noise under fluctuation, signal processing is made by using digital signal processor (DSP), hardware exclusively for it. As a result, the noise was lowered by about 7dB (1/5) for the basic type of refrigerator. 12 figs.

  20. Robust control of wire-driven system using linear DC motor; Linear DC motor ni yoru wire kudokei no robust seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Ikeda, M. [Asahi Chemical Industry Co. Ltd., Tokyo (Japan); Hashimoto, H. [The University of Tokyo, Tokyo (Japan). Institute of Industrial Science

    1994-10-20

    The driving system and its control method were studied to miniaturizing the robot and multiplying its degree of freedom. Through designing the composition of force-transferring device driven by wire and actuator done by thin linear motor, the space can be saved by separating the places needing the force-transferring device and those doing the actuator. However, the driving by wire has the unknown stiffness, backlash, friction and other hardly controllable elements. Three types of robust control, observer-based control, sliding-mode control and H{infinity} control were applied and mutually compared. The H{infinity} control was a H{infinity} norm which was adopted, with optimization, into the evaluation function to measure the objective transfer function. Enabling the comparatively easy designing of high-gain controller to comply with the objective, the H{infinity} control theory was known to be effectively applicable even to the objective having the backlash, friction and resonance point. The present control was robust also against the fluctuation in load. 10 refs., 15 figs., 2 tabs.

  1. Development of large scale wind energy conservation system. Development of control techniques for assembly-type wind power generating systems; Ogata furyoku hatsuden system no kaihatsu. Shugogata furyoku hatsuden system no seigyo gijutsu no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Takita, M. [New Energy and Industrial Technology Development Organization, Tokyo (Japan)

    1994-12-01

    Described herein are the results of the FY1994 research program for development of control techniques for assembly-type wind power generating systems. The study on optimum system configuration produces 50 to 100kW wind power units for screening small-size wind power plant types, and, at the same time, surveys performance of commercial units and experiences of 9 makers capable of producing the above units. As a result, 3 MICON`s units (output: 100kW, active YAW control, monopole tower, maximum wind speed: 60m/s) are selected. The study on optimum operational techniques integrates 2 medium-size power units into a power line, showing a service factor of 30.2% on the annual average, monthly varying in a range from 11.8 to 45.0%. These units, installed in Miyako Island, were attacked by 3 typhoons of wind velocity of 25m/s or higher in 1994, and the only damage recorded is that of the anemoscope/anemometer. It is found that No.1 unit is located at a better geographical point than the No.2 unit, to produce a higher output. 3 figs., 3 tabs.

  2. Traffic supervisory/control system for Kobe-Awaji- Naruto expressway of Honshu-Shikoku Bridge Authority; Honshu Shikoku Renrakukyo Kodan nonyu no Kobe Awaji Naruto jidoshado kotsu kansei shisetsu seigyo system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Toshiba delivered the traffic supervisory/control system for Kobe-Awaji-Naruto expressway of Honshu-Shikoku Bridge Authority opened in May 1998. This traffic supervisory system rapidly exactly collects and services the information on the expressway of 89km including Akashi Kaikyo bridge and O-Naruto bridge. The facility control system totally efficiently maintains and controls various facilities for lighting and air circulation of tunnels on the expressway. The previous control system transmitted road information on traffic volume and traffic congestion to offices by using specific lines and terminals, while this system with a monitoring function using intranet can easily service such information by existing PCs. (translated by NEDO)

  3. Traffic supervisory/control system for Kobe-Awaji- Naruto expressway of Honshu-Shikoku Bridge Authority. Honshu Shikoku Renrakukyo Kodan nonyu no Kobe Awaji Naruto jidoshado kotsu kansei shisetsu seigyo system

    Energy Technology Data Exchange (ETDEWEB)

    1999-03-01

    Toshiba delivered the traffic supervisory/control system for Kobe-Awaji-Naruto expressway of Honshu-Shikoku Bridge Authority opened in May 1998. This traffic supervisory system rapidly exactly collects and services the information on the expressway of 89km including Akashi Kaikyo bridge and O-Naruto bridge. The facility control system totally efficiently maintains and controls various facilities for lighting and air circulation of tunnels on the expressway. The previous control system transmitted road information on traffic volume and traffic congestion to offices by using specific lines and terminals, while this system with a monitoring function using intranet can easily service such information by existing PCs. (translated by NEDO)

  4. Tracking control of maximum power point for windmill power system by identification of output characteristic; Shutsuryoku tokusei no dotei joho ni motozuku furyoku hatsuden system no saidai shutsuryokuten tansaku seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Senju, T.; Uezato, K. [University of the Ryukyus, Okinawa (Japan); Tokumura, M. [Okinawa Electric Power Co. Inc., Okinawa (Japan)

    1996-11-20

    In recent years, exploitation of natural energy by saving fossil energy is being reconsidered. One of the expected sources of natural energy for the future is wind energy, which has been actively studied as a substitute source of energy for the world. However, the wind energy is influenced by geographic and weather conditions. So that the generating power varies with time. Therefore, in order to make the windmill generator system to extract available maximum power from wind energy. This paper proposes a tracking control method of maximum power operating point using the recursively least square method with forgetting factor. The proposed method is simple since it identifies the system parameters and controls the actual rotor speed by means of a PI controller. The system parameters are identified by using the information for generating power and windmill speed. We verify the effectiveness of the proposed control method with numerical simulations and experimental. 11 refs., 12 figs., 3 tabs.

  5. Study on the optimal control of the ground thermal storage system in the greenhouse. Part 4; Onshitsu ni okeru taiyo energy dochu chikunetsu system ni okeru saiteki seigyo ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Zheng, M. [Sanko Air Conditioning Co. Ltd., Osaka (Japan); Nakahara, N. [Kanagawa University, Yokohama (Japan)

    1996-10-27

    Three types of weight in both energy saving and optimum room temperature environment were changed to obtain the optimal control solution of the ground thermal storage system in a greenhouse. The relation diagram between the optimal solution of a performance function, and the state constraints and control function constraints was created in consideration of the energy term in a control function value area and the room temperature environment. As a result, the whole image of the performance function could be grasped in consideration of the energy term with inequality constraints and the room temperature environmental term in this study. The rate of a weighting factor in the performance function significantly influences the optimal solution. The influence on the optimal solution also changes when the optimal room temperature schedule differs. The influence that three types of rising algorithm exert on the convergence and converging speed was investigated. Superiority or inferiority occurs according to the space properties of a performance function. A zigzag method is most disadvantageous. The constraints can be converged to the optimal solution using an SUMT outer point method irrespective of the initial value. 6 refs., 6 figs., 4 tabs.

  6. Resolution of digital servo control system using single-bit digital signal processing; 1 bit digital shingo shori wo mochiita seigyo no bunkaino to johoryo ni tsuite no simulation

    Energy Technology Data Exchange (ETDEWEB)

    Tojo, K.; Kurosawa, M.; Oka, K.; Higuchi, T. [The University of Tokyo, Tokyo (Japan)

    1998-05-01

    The application of single-bit digital signal processing to mechanical control system has already been proposed by the authors. Multi-bit A/D converter has been improved to the high level. But it is difficult to make more high resolution A/D by latest semiconductor technologies. There is single-bit digital signal which is generated by a delta-sigma modulator. Single-bit digital signal has small quantized error around low frequency. Then with this single-bit digital signal processing, high resolution on controlling such a narrow band width mechanical system will be realized. In this paper, resolution of analog, multi-bit and single-bit control systems are estimated with simulation. According to simulations` results, single-bit control system has higher resolution than multi-bit system in the condition of equal bit rate. 5 refs., 17 figs., 1 tab.

  7. Fundamental study on stabilizing control method for electric power system using distributed circuit model; Bunpu teisu kairo moderu ni yoru denryoku keito doyo mogi to anteika seigyo ni kansuru kisoteki kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Hamada, A.; Kawasaki, K. [Shikoku Electric Power Co., Inc., Kagawa (Japan); Takigawa, K. [Shikoku Reserch Institute Inc., Kagawa (Japan); Ariyoshi, H. [Ehime University, Ehime (Japan)

    1997-06-20

    To grasp the electric power system disturbance, the detailed simulation model of the electric power system is applied, however, it is not so easy to grasp the disturbance characteristics of a large scale electric power system in the broader aspects. On the other hand, from a shut down test of generator and electric load in the electric power system, it is well known that the power disturbance is transmitted from the test point to the other points with constant delay time. The phenomena shows that the electric power system has a similar dynamic characteristic to the distributed constant circuit. In this paper, the electric power system is expressed with the distributed constant circuit so that the main disturbance characteristics are obtained without difficulty. Moreover, the possibility of suppressing the disturbance is discussed by employing active sink method, and distributed constant circuit model and lumped constant circuit model are compared with the viewpoint of eigenvalue and its propriety is showed. Further, as an example, active sink method, the effectiveness of distributed constant model in the suppressing control of electric power system disturbance, is showed. 7 refs., 12 figs., 1 tab.

  8. Stabilizing control of a triple type inverted pendulum system based on the loop shaping design procedure; Loop seikei sekkei shuho ni motozuku chokuretsu 3 ju gata toritsu shinshi kei no anteika seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Kawatani, R.; Murata, T.; Heltha, F.; Bushimata, S. [Nagaoka University of Technology, Nagaoka.]|[Niigata (Japan)

    1997-08-31

    As the inverted pendulum system has (1) distinct and easy-understanding for the beginner control aim, (2) simple, easy-making and low-cost apparatus constitution, (3) comparatively correct acquirement of the state space model, and so forth, the system is one of experimental apparatus best known in the field of control. This is used in a wide range for verification of the theory constructed newly. Hitherto, as various forms of the pendulum system are constructed for different control aims, difficulty of stabilization control in experiment is widely different by number and arrangement of the pendulum constructing the system. In this paper, design of the stabilization controller was conducted by using Loop Shaping Design Procedure (LSDP). And, one trial of the stabilization control system design method for triple type pendulum systems was described, and actual possibility of the stabilization was shown. In future, it is necessary to investigate realization possibility and rational design method of the stabilization control for the pendulum system with more complex constitution. 3 refs., 5 figs., 1 tab.

  9. Tracking control of maximum power point for windmill power system by identification of output characteristics; Shutsuryoku tokusei no dotei ni motozuku furyoku hatsuden sytem no saidai shutsuryokuten tansaku seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Senju, T.; Uezato, K. [Univ. of the Ryukyus, Okinawa (Japan). College of Engineering; Tokumura, M. [Okinawa Electric Power Co. Inc., Okinawa (Japan)

    1995-09-30

    In recent years, exploitation of natural energy by saving fossil energy is being reconsidered. One of the expected sources of natural energy for the future is wind energy, which has been actively studied as a substitute energy for the world. However, wind energy is influenced by geographic and weather conditions, so the generating power varies with time. Therefore, in order to make the windmill generator system to extract available maximumpower from wind energy, this paper proposes a tracking control method of maximum power operating point using the recursively least square method with forgetting factor. The proposed method is simple since it identifies mechanical parameters and it controls the actual rotor speed by means of a PI controller. System parameters are identified by using generator power and windmill speed. Simulation and experiment results verify the effectiveness of the proposed control method. 8 refs., 57 figs., 11 tabs.

  10. Fiscal 1998 research report. R and D on super metal (Al system mesoscopic texture-controlled material); 1998 nendo seika hokokusho. Super metal no gijutsu kaihatsu (aluminium kei mesoscopic soshiki seigyo zairyo no gijutsu kaihatsu)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    For development of Al materials with superior industrial characteristics (strength, corrosion resistance), this research has promoted development of large-size Al system materials with mesoscopic crystalline texture by high- strain accumulation control technology, and recovery and recrystallization control technology. In this fiscal year, (1) basic study on high-strain accumulation control technology, (2) study on a formation mechanism of ultra- fine crystal grains, and (3) development of a machining process were made. In (1), basic study on low-temperature rolling and study on rolling by rollers having different peripheral speeds were made. In (2), study on refining of recrystallized grains of 5000-base and 7000-base alloys was made. In (3), a low-temperature rolling equipment, and a ultra-rapid heating device were introduced. For the whole R and D project on super metal, the main research facilities such as a low-temperature rolling body for high- strain accumulation and a high-strain accumulative structure formation equipment (melt rolling equipment) for uniform nucleus formation in recrystallization were introduced to gain a firm foothold for the future application research. (NEDO)

  11. Boiler for ships; Hakuyo boira

    Energy Technology Data Exchange (ETDEWEB)

    Shimoda, F. [Mitsubishi Heavy Industries, Ltd., Tokyo (Japan)

    1999-07-20

    In this paper, production and technology trend of boiler for ships in 1998 are described. The actual results of main boiler are as follows. As the main boiler for LNG ships, 4 boilers produced by Mitsui Engineering and Shipbuilding for Qatar Project, 8 produced by Kawasaki Heavy Industries for South Korea and 10 produced by Mitsubishi Heavy Industries for domestic use and South Korea. 1998 was an active year for the main boiler for ships. The auxiliary boiler of steam pressure of 16k to 25k equipping for tanker ships was 115 (4,441t/h of steam quantity in total), it greatly increased in comparison with 88 (3,172t/h) produced in the proceeding year. Donkey boilers of steam pressure of 6k to 10k equipping for container ships and bulk cargo was 147 (672t/h), and it substantially decreased in comparison with 274 (693t/h) of the proceeding year, but capacity per boiler increased. The gas exhaust economizer for turbo power generation plants was 6 produced for VLCC. (NEDO)

  12. Study on a constant-tip-speed-ratio operation of wind power generation system. Effect of load control system on dynamic behavior; Furyoku hatsuden system no hensoku seigyo unten ni kansuru kenkyu. Fuka seigyokei ga system no rikigakuteki kyodo ni oyobosu eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Wakui, T.; Yamaguchi, K. [Waseda University, Tokyo (Japan); Tanzawa, Y. [Nippon Institute of Technology, Saitama (Japan); Hashizume, T.; Ota, E. [Waseda University, Tokyo (Japan). School of Science and Engineering

    1998-06-01

    The effect that the set data of the load control system in a wind power generation system exerts on the dynamic behavior of a system was investigated. The wind power generation system consists of a hybrid wind turbine with combined Darrieus and Savonius rotors, load with a generator and battery in the center, and a controller. A constant-tip-speed ratio operation that holds the circumferential speed ratio in which the power coefficient is maximized irrespective of the change in wind velocity was used to extract and convert the wind energy more effectively. In a high-wind velocity area, the system is operated at a fixed speed, and the increase in rotation is suppressed to protect the wing strength. In a large system, the response characteristics are only slightly improved by the limited load operation range and influenced rotor inertial. Power cannot be fully extracted even if the control system is changed in setting, and the applicability to the wind situation remains low. During the actual operation, the adjustment value of the control system should be set so that the output operation is satisfactorily possible in the specified load operation range, that is, the change in the instantaneous value of an effective power coefficient indicates almost flat gain characteristics in frequency characteristics. 14 refs., 10 figs., 2 tabs.

  13. Active noise control technology. Active soon seigyo gijutsu

    Energy Technology Data Exchange (ETDEWEB)

    Eguchi, M.; Kokubo, F.; Tanaka, S.; Yao, K. (Sharp Corp., Osaka (Japan))

    1994-05-10

    The signal processing method of the Active Noise Control (ANC) system was studied. The principle of ANC is to output secondary sound waves having opposite phase, identical amplitude from the control point of the sound wave of the primary sound source, and eliminate the noise by interference. As application fields, there are air conditioner ducts and compressors as one dimensional noise source, and automobile and axial fan as three dimensional noise source. In order to improve the stability of coefficient renewal algorithm of Adaptive Digital Filter (ADF), for generation of opposite phase noise, DC-LMS algorithm which can control the rise in gain of specified frequency zone was proposed. Furthermore, with the purpose of reducing the amount of operation, the introduction of lattice type AR filter was tested for the stability of the filter in IIR-ADF (Infinite Impulse Response Adaptive Digital Filter) and its application process. The applicability studies of these improved methods on the noise inside of ducts were actually measured, and the effect was verified. For the multi-channel control of 3 dimensional noise source, reference scanning method to reduce the filter operation was proposed. In the partial space noise eliminating experiment, it was made clear that it possesses equivalent effect to error scanning method. 11 refs., 14 figs., 1 tab.

  14. Studies on the practical use of learning feed-forward control system to ship maneuvering motion. 2. Experimental verification of follow-up control system; Senpaku soju undo no gakushugata feed forward seigyo hoshiki no jitsuyoka ni kansuru kenkyu. 2. Jissen jikken ni yoru mokuhyochi tsuiju seigyokei no kensho

    Energy Technology Data Exchange (ETDEWEB)

    Iwamoto, S.; Yamamoto, Y. [Kyushu University, Fukuoka (Japan); Ogawa, Y. [Kyushu University, Fukuoka (Japan). Faculty of Engineering

    1998-06-01

    Development has been demanded on a maneuvering motion control system with fine and high accuracy as a navigation aiding system for ship operators. In order to use practically the learning feed-forward control system which has been proposed by the authors, a target value follow-up control system was experimented first by using an actual ship. The experiment revealed that the result of simulation derived at the control system design phase agreed well both qualitatively and quantitatively with the result of the actual ship experiment. Performance of the learning feed-forward control system in the actual ship can be estimated sufficiently from the simulation result. A learning feed-forward control system for follow-up control to desired value (LFFCD) as the base of the learning feed-forward control system can be practically used sufficiently because of the following reasons: high-accuracy control which cannot be obtained by feedback control is possible; the system can be adapted well to non-linearity such as large angle turning because of its learning function; and a case of estimation error in ship body characteristics can also be responded by the learning function. 6 refs., 14 figs., 1 tab.

  15. Fiscal 1998 research report. R and D on the nanometer-controlled optical disk system / Magnetic domain- response 3-D optical memory technology (Development of rational use technology of energy); 1998 nendo nanometa seigyo hikari disk system no kenkyu kaihatsu seika hokokusho (jiku oto sanjigen hikari memory gijutsu). Energy shiyo gorika gijutsu kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    This report describes the fiscal 1998 result on the magnetic domain-response 3-D optical memory of the nanometer-controlled optical disk system. The magnetic domain response technology is a next-generation optical disk technology which copies fine bits recorded on a recording layer on a read-out layer while magnifying them, and detects the bit smaller than a read out optical spot as large signal level. Magnetic domain-response read out of a fine magnetic domain of 0.12{mu}m in mark length and 0.60{mu}m in track width recorded by optical pulse magnetic field modulation was attempted under the conditions of conventional wavelength (around 680nm) and NA (0.55), and succeeded in expanding unobservable signals up to saturated amplitudes. This is equivalent to a 2-D recording density of 10Gbit/in{sup 2}. Crosstalk-free read out was also verified. As for R and D on the magnetic circular polarization enhanced multiple read out system, the 2-wavelength read out system was fabricated by using 515nm Ar laser light and 780nm semiconductor laser light. It was verified in 2- wavelength read out test that the multi-wavelength read out system is reasonable theoretically. (NEDO)

  16. Improvement of the efficiency characteristics on the photovoltaic generation system based on a generation control circuit. Part 3. Research on architectural systematization of energy conversion devices; Dosaten seigyo kairo wo mochiita taiyo denchi hatsuden koritsu no kaizen. 3. Energy henkan no kenchiku system ka ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Shimizu, T.; Ito, N.; Kimura, G.; Fukao, S.; Sunaga, N.; Tsunoda, M.; Muro, K. [Tokyo Metropolitan University, Tokyo (Japan)

    1996-10-27

    In introducing a photovoltaic power generation system to urban homes, the general practice is to install a large number of solar cell panels on the roof. However, as is often the case, a part of the solar cell panels is in the shadows (partial shadows) of neighboring homes, electric poles, cables and trees. Under the circumstances, studies were made on the numerous changes in the lowered generating capacity of individual solar cells by the partial shadows. Developed by the authors were the generation point control principle, in which the generation point was individually controlled on serially connected plural solar cell modules, and a practical circuit system based on that principle with the effects verified in a field test. In the test, the generated power of the system was 476W without partial shadows, and was 323W with partial shadows and without the operation of the generation point control circuit, increasing to 406W with partial shadows and with the operation of the circuit. As a result, compared with the case where no generation point control circuit was employed, the effectiveness of the proposed circuit was evident. 3 refs., 10 figs., 1 tab.

  17. Hydrogen utilization international clean energy system (WE-NET). Subtask 8. Development of hydrogen combustion turbines (development of combustion control technology); Suiso riyo kokusai clean energy system (WE-NET). Subtask 8. Suiso nensho turbine no kaihatsu nensho seigyo gijutsu no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    The paper described the fiscal 1996 developmental results of hydrogen burning turbine combustion technology in the hydrogen utilization international clean energy system (WE-NET) project. A test was conducted on an annular type combustor where oxygen is mixed with steam (inert gas) at burner and fired with hydrogen. Appropriate flame shape and cooling/dilution vapor distribution were attempted, and various data on combustion were measured for improvement. Mixture and flame holding were improved by developing a can type combustor (1) where oxygen is diluted with steam after firing oxygen and hydrogen around burner and by strengthening circulation in the combustor. Improvement such as appropriate steam distribution, etc. is needed. A can type combustor (2) was tested in which the premixed oxygen and hydrogen is supplied from scoop and fired with hydrogen. By supplying part of oxygen from the primary scoop, the residual hydrogen and oxygen concentration around the stoichiometric ratio can be reduced. Concentration of the residual oxygen can be measured by the absorption light method, but it is difficult to adopt the non-contact measuring method to hydrogen. An outlook for the gas temperature measuring method was obtained. 12 refs., 121 figs., 27 tabs.

  18. Leading research on cell proliferation regulation technology; Saibo zoshoku seigyo gijutsu no sendo kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    For developing intelligent material, animal test alternative model, bio-cell analysis equipment, self-controlling bio-reactor and medical material, development of functional cells was studied by cell proliferation regulation technology. In fiscal 1996, the expression analysis and separation technology of specific gene for cell proliferation, and the intracellular regulation technology were surveyed from the viewpoint of intracellular regulation. The cell proliferation regulation technology by specific regulating material of cells, extracellular matrix, coculture system and embryonic cell was surveyed from the viewpoint of extracellular regulation. In addition, based on these survey results, new cell culture/analysis technology, new bio-material, artificial organ system, energy saving bio-reactor, environment purification microorganism, and animal test alternative model were surveyed as applications to industrial basic technologies from a long-term viewpoint. The approach to cell proliferation regulation requires preparation of a concrete proliferation regulation technology system of cells, and concrete application targets. 268 refs., 43 figs., 4 tabs.

  19. Controlled release/removal technology; Seigyo hoshutsu {center_dot} jokyo gijutsu

    Energy Technology Data Exchange (ETDEWEB)

    Tojo, K. [Kyushu Inst. of Tech., Fukuoka (Japan)

    2000-02-05

    The controlled release is to control optimally releasing velocity of active ingredient in medication or agricultural chemicals for therapy or vermin control. The novel transdermal therapeutic system can be developed considering diapause term of medication setting type or time pharmacology by storing information of time lag for medication permeability in medication keeping layer. Furthermore by resent iontophoresis technology using electric fields for controlling drug permeability through the skin, migration volume of active ingredient to blood can be controlled pulsed shape by On- Off of electric fields. In another hand, it comes to be clarified that drugs in the body can be extracted by contrarotating operation of electrodes. From now, effective removal system of barren materials from organism or time controlling therapeutic system with feed buck function can be realized by being optimal novel technology of medical engineering therapy. (NEDO)

  20. Development of a platoon driving AHS; AHS jikkensha ni okeru gunsoko seigyo no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Seto, Y.; Inoue, H. [Nissan Motor Co. Ltd., Tokyo (Japan)

    1997-10-01

    Nissan and the Public Work Research Institute of the Ministry of Construction are developing an Automated Highway System. We are investigating a longitudinal control system in AHS. In this paper, a vehicle control method using two actuators an engine and a brake, is described. Experimental and simulated results are shown. A Platoon driving control method using road-to-vehicle and vehicle-to-vehicle communication is described. And the influence of the communication on the control performance is shown by experiments and simulation. The effects of the communication device and control device mentioned above are verified by experimental results in an AHS field test conducted in September 1996 on a dosed highway. 5 refs., 8 figs.

  1. Dynamic characteristics and control of jet engines. Jet engine no dynamics to seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Sugiyama, N. (National Aerospace Lab., Chofu, Tokyo (Japan))

    1993-06-10

    The recent controller of a jet engine is called as Full Authority Digital Engine Controller (FADEC). This means that the whole operation from starting to shut down of an engine is carried out by the electric digital control. Many studies on the control of a jet engine by the electric digital control have been conducted since the past, this advantages were also clarified, but, since the reliability of electrical machines was low, this was not put into use at once. However, FADEC became possible since the technical reform concerning to the increasing reliability and environment-resisting property, small type with low weight and low cost of electrical machines was performed. In this paper, FADEC system was summarized, in connection with this system, studies on the dynamics and multi-variables control of a jet engine were described. 15 refs., 11 figs., 1 tab.

  2. Active control of aerodynamic noise; Active control ni yoru furyoku soon no seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Nishimura, M. [Mitsubishi Heavy Industries, Ltd., Tokyo (Japan)

    1996-10-01

    This paper introduces summary and examples of active noise control (ANC) and active flow control (AFC) as the aerodynamic noise control techniques. The ANC is a technique to generate noise of a reverse phase which cancels the original noise. Noise reduced especially effectively by the ANC is noise from fans and ducts used for engine air supply and exhaust. The ANC is effective in low frequencies, and when used with a passive method, a compact exhaust silencer can be realized, which has high noise reducing performance over the whole frequency band and has low pressure loss. Signal processing in active noise reduction system is always so adjusted that noise is discharged from a secondary noise source in which signals detected by a detection microphone is given a digital filter treatment, and output from an error microphone is minimized. The AFC has been incapable of realizing a reverse phase over a wide frequency band when depended on analog treatment. However, the authors have developed an adaptive type feedback control system, and verified that the system can be applied to any frequency variation and control it in a stable manner. 15 refs., 9 figs., 1 tab.

  3. Biped locomotion control with compliance; Compliance wo mochiita nisoku soko robot no undo seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Kawaji, S.; Ogasawara, K.; Iimori, J. [Kumamoto University, Kumamoto (Japan)

    1995-12-20

    Realization of stable walking motion of biped locomotive robot is one of difficult control problems, but it is very interesting both theoretically and practically from the view point of motion control. The authors have already reported that the locomotion rhythm plays an important role in walking motions, and confirmed experimentally that the control method based on the locomotion rhythm is effective. But, many uncertainties, e.g., the changes of robot dynamics and the interaction between the robot and the floor, may make the locomotion rhythm irregular. In this paper, we introduce the compliance into the control system in order to modify the original reference locomotion rhythm for stable walking under the existence of the uncertainties. Concretely a compliance control system for the contact leg is designed to modify the rhythm by changing the posture of the leg corresponding to the force acting from the body so that the robot may keep the equilibrium state dynamically. Finally the simulation results are given to illustrate the effectiveness of the proposed compliance control system. 21 refs., 12 figs., 3 tabs.

  4. Investigational report on the trend of control technology; Seigyo gijutsu doko chosa hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-06-01

    For the purpose of corresponding to changes of the industrial structure and making full use of the control technology, the paper investigated the state of the application. High-grade automation in the manufacturing industry has reached the spread of use at big companies for these 10 years. The hierarchical structure of business/process/DCS has been completed, and the optimal control and the advanced control have been realized. The development and spread to the much wider field is anticipated. The soft structure system is needed for equipment improvement in view of the life cycle of equipment and toward the elimination of bottlenecking. For the design of the control system, commercial tools began to be much used, and it is expected in future to accumulate and recycle the knowledge/knowhow for effective design work. Further, strict simulation models based material balance and heat balance have also been on the rise, and the advance in technology is expected. Because of the total productivity of the production equipment, the control technology is anticipated not only for the pursuit of controllability but for the use as supporting technology in the operation/driving/failure diagnosis for working out, carrying out and evaluating the optimum operation plan. 18 refs., 99 figs., 100 tabs.

  5. Leading research on artificial techniques controlling cellular function; Saibo zoshoku seigyo gijutsu no sendo kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    Advanced research and its applicability were surveyed to apply the advanced functional cells to industry. The basic target was set to develop, produce, control and utilize the functional cells, such as intelligent materials and self-regulation bioreactors. The regulation factors regarding apotosis, which is a process of cell suicide programmed within the cell itself of multicellular organisms, cell cycle and aging/ageless were investigated. Furthermore, the function of regulatory factors was investigated at the protein level. Injection of factors regulating cellular function and tissue engineering required for the regulation of cell proliferation were investigated. Tissue engineering is considered to be the intracellular regulation by gene transduction and the extracellular regulation by culture methods, such as coculture. Analysis methods for cell proliferation and function of living cells were investigated using the probes recognizing molecular structure. Novel biomaterials, artificial organ systems, cellular therapy and useful materials were investigated for utilizing the regulation techniques of cell proliferation. 425 refs., 85 figs., 9 tabs.

  6. Active noise control and application; Active soon seigyo gijutsu to sono tekiyorei

    Energy Technology Data Exchange (ETDEWEB)

    Muto, M.; Hayashi, M.; Kawai, T.; Sato, F.; Kanbe, K. [Ishikawajima-Harima Heavy Industries Co. Ltd., Tokyo (Japan); Inoue, Y.; Takada, K.

    1995-11-01

    The recent rapid progress of electronic devices and signal processing techniques has allowed the practical application of active noise control(ANC) for reduction of noise. The principle of ANC is to cancel a noise by an anti-noise which has the same amplitude of the noise but the inverse phase. For noise reduction in gas ducts, the one dimensional ANC theory can be applied. However, there are still several technical issues particulars to individual plants to be studied and solved. This paper describes the ANC system using the hydraulically actuated speaker which has been developed at IHI, and applications to reduction of low frequency sound emitted at the exit of a stack from a large induction fan. Another application for tractor cabin is also described, indicating successful noise reduction. 6 refs., 12 figs.

  7. Development of active control technique for engine noise. Engine soon no active seigyo gijutsu no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Uchida, H.; Nakao, N.; Butsuen, T. (Mazda Motor Corp., Hiroshima (Japan))

    1994-03-31

    As a measure to reduce engine noise in a car, the active noise control (ANC) technique to eliminate noise by another noise of antiphase has been studied. The conventional filtered-x LMS control algorithm has been generally applied to the ANC, but a large quantity of arithmetic operation used for filtering is practically problematic. This paper proposes the new algorithm of which control effects and practicability have been improved by utilizing periodicity of engine noise and by introducing the idea of error scanning. This algorithm requires only 30-50% of the arithmetic operation of the above LMS method. Concerning the actual system structure, arrangement and the number of microphones have been examined based on the detailed measurement results of the spatial distribution of noise in a car. As a result, the suitable arrangement of only three microphones to reduce noise in the whole interior space of a car is found. Through the experiments, maximum noise reduction of 8dB (A scale) has been achieved at each seat position. 7 refs., 9 figs., 1 tab.

  8. Application of the multistage prediction adaptive control gambit method to the cement plant raw material mixing control; Semento puranto genryo chogo seigyo eno tadan yosoku tekio seigyo. Shuho no oyo

    Energy Technology Data Exchange (ETDEWEB)

    Ozaki, Kenji [Kawasaki Heavy Industries, Ltd., Kobe (Japan)

    1999-04-05

    Mixing control system of the cement plant makes composition fluctuation of the acceptance raw material to be the probability disturbance, and the mixture ratio of control word and 4 kinds of raw material is made to be manipulated variable in respect of hydraulic modulus (HM), silicon percentage of victory (SM), iron modulus (IM). It was shown that the non-intervention between manipulated variable and controlled variable was approximately possible using the static predistorter, while being the multivariable stochastic control system of two input and ternate force, is shown. Besides, it comes out, and the combination conjunction cotton control system is presented in respect of dynamic adaptive control by Extended Horizon Adaptive Control based on the multistage prediction and static predistorter. That it has the performance which in addition, it is robust for the characteristic fluctuation of the object including the dead time for conventional control system and adaptive control based on the prediction still more tracking and regulation performance of three indexes it compares compare excellence were confirmed by the simulation, and the prior verification of the application effectiveness to the real machine was carried out. (translated by NEDO)

  9. Fundamental study of noise reduction by active noise control. Active soon seigyo ni yoru soon taisaku no kiso kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Sugiyama, T.; Naganawa, A. (Chubu Electric Power Co. Inc., Nagoya (Japan))

    1994-05-01

    Fundamental experiments were conducted on active noise control as sound insulation fence. This control method generates a sound source with the same amplitude and opposite phase as noise, and reduces noise through the interference of acoustic wave from the source. However, this method has too many problems with the three-dimensional sound field to be actually exploited in this environment. The following experiments were conducted to apply the active noise control to the sound insulation fence: one method of installing a geometric path along the inner side of the sound insulation fence used the acoustic delay process generated on the source side to attenuate the sound pressure level on top of the fence through interference of routing difference sound. The other method used an additional sound source attached to the bottom of the geometric path above to obtain a higher attenuation than using the simple sound insulation fence. At the second step, the active control duct model was used for the test. Then, the three-dimensional model test was conducted for active control of the sound insulation fence. The results of these fundamental experiments have indicated that each method can reduce the relative sound pressure level and the active noise control system using the acoustic phase difference can effectively reduce noise with dominant components in a low frequency band. There are still several problems with the three-dimensional mock-up model. 4 refs., 18 figs., 2 tabs.

  10. Historical development of ERF and application to mechanical; ER ryutai no seigyo eno oyo to sono rekishi

    Energy Technology Data Exchange (ETDEWEB)

    Saito, T. [Tokyo Engineering Univ., Tokyo (Japan); Sugimoto, N. [Ministry of Lab., Tokyo (Japan). Industrial Safety Inst.

    1995-09-10

    In this article, the history of research on ER fluids (electrorheological fluid-ERF) is briefly introduced and in commenting on its application to mechanical technology, the principle model of action of ER actuator and the improvement of control performance of pneumatic cylinder are explained as examples of application of the peculiar nature of ERF to control systems. In 1947, W. M. Winslow introduced for the first time a big viscosity change shown by ERF in his U.S. patent, since then this phenomenon has been called the Winslow effect. In 1960`s, the regular research of ERF started, reached its peak in 1970`s and in 1980`s its application to vibration control technology became flourishing. In this article, the properties of ERF, problematical points upon its application to equipment and the present state of ERF application studies are described. Furthermore, concerning the true merits of ERF as work output transistors, they are divided into the electricity-work output conversion property and the ERF transistor model for detailed explanation and the article ends up with the application of pneumatic cylinder to low velocity control. 19 refs., 9 figs.

  11. Result of verifying controllability of the total adaptive generation controller for brushless exciter; Brushless reijikiyo hatsudenki saiteki seigyo hoshiki no seigyosei kensho kekka

    Energy Technology Data Exchange (ETDEWEB)

    Morioka, Y. [Kansai Electric Power Co. Inc., Osaka (Japan)

    1998-11-10

    Discussions were given on effects of the total adaptive generation controller (STAGEC) for a brushless exciter. The STAGEC unifies exciting and speed governing systems, and uses the optimal regulator theory as a multi-input and multi-output system. Therefore, it requires a numerical model for objects to be controlled, and considered the control lagging. In addition, as an evaluation function to express a parameter for its optimizing performance, such a function was used as the one minimizing deviation from the targeted value of active power and terminal voltage similarly to conventional AVR and governors, in consideration of practical application of the system. The advanced performance system analyzer (APSA) was used to verify the system controllability by simulating the Kiso and Kansai trunk line. Generators other than those in the regular power transmission systems were paralleled as required. Installing the brushless TAGEC increased the critical transmission power by 40 to 45 MW (10 to 12%), and installing it on both generators increased the power by 50 MW (13%). These results reveal that the transmission capacity can be improved greater than with conventional brushless AVRs with PSS, and the capacity can be further increased by synergetic effect provided by the system if it is installed on a multiple number of generators. (NEDO)

  12. On-line temperature control of fluidized bed incinerator using fuzzy algorithm; Fuzzu seigyo donyu ni yoru ryudosogata shokyakuro unten no jidoka

    Energy Technology Data Exchange (ETDEWEB)

    Okayasu, S.; Kuratani, T.; Imai, H. [Ajinomoto Co. Inc., Tokyo (Japan)

    1995-03-15

    Automatic control of incinerators for their stable operation has been desired for the preservation of the environment in the factory. An on-line fuzzy control system has been successfully introduced for temperature control of the fluidized bed of incinerator for industrial wastes. In this case, manual control can be applied to the plant instead of a PID control system, because of the complexity of the waste materials and the large delay in detection of the temperature change in the fluidized bed sand. On the basis of analyzing the dynamic performance of the process and the know-how of skilled operators, membership functions and fuzzy control rules are selected, then determined carefully for the system. Introduction of the system resulted in almost the same performance as manual control. Subsequently the operators are freed from manual operation in the control room for an hour. 6 refs., 5 figs., 4 tabs.

  13. Fixed position holding control for self-propulsion barges under disturbance condition; Gairanka ni okeru jiko baji no teiten hoji seigyo ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Kijima, K.; Murata, W.; Furukawa, Y. [Kyushu University, Fukuoka (Japan). Faculty of Engineering

    1996-04-10

    In direct hoisting work in suspension bridge construction, since a cable crane directly hoists a bridge beam block put on a barge on the sea, precise fixed position holding function is required for a barge. The control system was then designed on the basis of an ILQ control theory, and the effect of change in time constant as design parameter on fixed position holding performance was studied. In addition, the critical disturbance for fixed position holding control was studied through numerical simulation under various disturbance conditions using the above designed control system. As a result, in the design of control systems on the basis of an ILQ control theory, the precise control system could be designed by diminishing, in particular, the time constant for state variable around a z axis among time constants according to the extent of disturbance. The control performance was largely affected by response delay period from sensing of disturbance to beginning of control. 3 refs., 7 figs., 2 tabs.

  14. Study on heavy duty truck stability control by braking force control; Seidoryoku seigyo ni yoru truck no sharyo kyodo anteika ni taisuru ichikosatsu

    Energy Technology Data Exchange (ETDEWEB)

    Matsuda, K.; Shinjo, H.; Harada, M.; Ohata, K.; Sakata, K. [Mitsubishi Motors Corp., Tokyo (Japan)

    1997-10-01

    Now a days we are discussing about the vehicle stability control system which freely controls the braking force of each wheel to apply the yaw t and decelerate the vehicle. The system drastically improve the vehicle cornering performance and stabilize the vehicle behavior in its critical area. This paper discusses a point to notice in case of applying this technique for heavy duty trucks, and describes the possibility of the stabilization for vehicle cornering behavior about heavy duty truck. 3 refs., 10 figs., 2 tabs.

  15. Stabilizing control of crystal size distribution in continuous crystallization processes; Renzoku shoseki purosesu ni okeru kessho ryukei bunpu no anteika seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Naito, K.; Sotowa, K.; Kano, M.; Hasebe, S.; Hashimoto, I. [Kyoto Univ. (Japan). Faculty of Engineering

    1998-03-01

    The sustained oscillation of the crystal size distribution (CSD) in continuous crystallization process is analyzed by simulation using a detailed model. CSD can not be used as a controlled variable because of its distributed nature. Therefore, the method of selecting representability indices for CSD and the stabilizing control of CSD based on those indices are investigated. A multi-loop scheme is proposed, wherein a system with the third moment of large crystal and the rate of product flow from the continuous crystallizer used as the controlled variable and the operating variable, respectively, is added to the SISO control system which employs microcrystal population density as the controlled variable and the microcrystal flow rate as the operating variable. The controlling performances of the newly proposed multi-loop scheme and the SISO control scheme are compared. It is confirmed that the proposed controlling method is effective when the constrain from the microcrystal flow rate is strict. 6 refs., 14 figs., 2 tabs.

  16. Development of combustion management concept for natural-aspirated small diesel engine; Shizen kyuki kogata diesel engine no nensho seigyo concept no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Wada, T.; Kawano, T.; Shoji, M.; Kuniyosh, M.; Yamashita, O.; Nagao, A. [Mazda Motor Corp., Tokyo (Japan); Yoshikawa, S. [Zexel Corp., Tokyo (Japan)

    1997-10-01

    We have developed a combustion management concept for natural-aspirated small IDI diesel engines and achieved higher power, lower exhaust emissions and more comfort. The concept is related to improvements of intake volumetric efficiency, EGR effect, mixture formation caused by combustion chamber and spray characteristics, engine management system and after treatment device. This paper describes the concept and experimental results. 3 refs., 14 figs., 1 tab.

  17. Exact linearization and its application to trajectory control articulated vehicles. Genmitsuna senkeika to sono ken'in sharyo no kido seigyo eno oyo

    Energy Technology Data Exchange (ETDEWEB)

    Sanpei, M. (Chiba University, Chiba (Japan). Faculty of Engineering)

    1992-08-10

    When generally designing a stabilized controller for a nonlinear system, a linear control theory is often applied after linearizing it using some forms of method. This paper introduces an exact linearization method using equations of state for better control, and shows examples of its application to track control of traction vehicles. As opposed to the conventional linearization method in which a nonlinear equation is Taylor developed for primary approximation, this method conceives basically that dx/dt = f (x) + g (x) u [where x'' and u'' are the state and the input respectively, and each term on the right hand side represents a vector field] takes a coordinate conversion and feedback composed of (x) = T (x); u = [alpha] (x) + [beta] (x) v [where [xi] and v'' are a new state variable and a new input respectively] relative to the above formula. The method further makes the coordinate conversion and the feedback agree exactly with a linear state equation in the [xi] coordinate system. The method applied to the following control when vehicles hauled by a tractor retreat on straight tracks prevented successfully jack knives from occurring. 22 refs., 8 figs.

  18. Study on load levelling by means of the control of air conditioner operation; Kuchoki kado seigyo ni yoru fuka heijunka ni kansuru ichikosatsu

    Energy Technology Data Exchange (ETDEWEB)

    Sasaki, H. [Hiroshima University, Hiroshima (Japan); Sadakuni, S. [Japan Broadcasting Corp., Tokyo (Japan)

    1995-04-20

    The recent drastic increase in the number of air conditioners has caused sharp and narrow peaks in summer seasons due to the inherent temperature sensitive characteristics. The authors proposed to reduce the peak power demand by controlling air conditioner operations, verifying its effectiveness on peak demand clipping. However, the former study has shortcomings in that any qualitative treatment of room temperatures or pleasant feeling was not attempted and it did not provide a way of assessing peak demand clipping in a power system as a whole. In this paper, we shall first propose a new control method that can compromise pleasant feeling and reduction in power demand. Although air conditioners are used to pursue `pleasant feeling`, this contradicts to reduce power consumption and further more the concept of `pleasant feeling` is very vague. Hence, `Weber-Fechner`s law` is utilized to quantify the pleasant feeling which is treated as fuzzy quantity. Fuzzy co-ordination method is used to compromise power demand curtailment and pleasantness. In the second part of this paper, we shall propose an approach of assessing the amount of peak load clipping when the newly proposed control strategy is adopted in a real size power system: A decrease in the required generation capacity is estimated provided that the Loss of Load Probability (LOLP) is maintained at the same level before and after the application of the new control strategy. The reduction can be regarded as a dividend of load management. 5 refs., 9 figs., 5 tabs.

  19. Fiscal 1998 research report on micro-particle control process technology; 1998 nendo micro ryushi seigyo process gijutsu no chosa kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    For establishment of process technology realizing control of forms and structures of micro-particles on practical equipment, research was made on related elementary technologies and current technologies. The research was promoted aiming at synthesis of micro-particles from nanometer to micrometer in size and their application to functional materials, establishment of the methodology for correlating the microstructure and function of micro-particle materials with fabrication process, and establishment of a common-base technology system in chemical technology aiming at fabrication of functional materials. As for the common- base technology, to clarify its importance, research was made on the fabrication method and dispersion mechanism of nano- particles, particle arraying method by coating, device fabrication technique by coating, and one-step synthesis and coating of nano-particles. As for the project research, synthesis of monodispersed nano-particles at large production rates, fabrication of thin films and bulk materials by arraying and coating. (NEDO)

  20. Repeated magnetization with temperature control in a high-Tc superconducting bulk; Ondo seigyo wo tomonatta koon chodendo baaruku tai no dotai no kurikaeshi no chakuji ho

    Energy Technology Data Exchange (ETDEWEB)

    Kamijo, H.; Fujimoto, H. [Railway tech. Research Inst., Tokyo (Japan)

    2000-05-29

    It examines applicability of the hulk magnet which uses magnetize-ingly the high-temperature superconductivity bulk body to the superconducting magnet for levitation system railway. It must be magnetized to the superconductive bulk body in respect of as much as possible large magnetic flux in order to obtain the powerful bulk magnet. Therefore, large coil for the impression magnetic field and power are required, and there is a problem of the growth of large electromagnetic mosquito even in the magnetizing process. Then, it is trying the method for magnetizing large magnetic field to the superconductive bulk body by comparatively small impression magnetic field by the method for repeatedly carrying out field cool and pulse magnetizing, while it gradually lowers the temperature of the superconductive bulk body from the critical temperature. (NEDO)

  1. Vibration suppression of robot arm feedforward control with on-line parameter identification; Online kansei dotei ni yoru robot arm no feedforward shindo yokusei seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Iwasaki, M.; Kuze, Y.; Otsuka, K.; Matsui, N. [Nagoya Institute of Technology, Nagoya (Japan)

    1997-12-20

    Generally, robot arms with flexible joints are multi-mass resonant systems, thus causing mechanical vibration. Since the vibration deteriorates the arm position control accuracy, the vibration suppression is indispensable to achieve the high performance arm motion. The authors have already proposed a feedforward vibration suppression scheme using an optimal control command shaping. The scheme is suitable for practical industrial use because of its simple control algorithm, however, there still remains a problem inherent in feedforward techniques that parameter setting errors in controller have significant effects on the suppression control accuracy. This paper presents an adaptive feedforward control of the vibration suppression with on-line mechanical parameter identifier, based on the proposed command shaping. In this scheme, the on-line identification of arm inertia using a method of least squares is performed during acceleration in arm motion. The identified parameter is used during deceleration to suppress the residual vibration. Experimental results using a prototype show the effectiveness of the proposed control. 9 refs., 10 figs., 2 tabs.

  2. Studies on surface structures and mechanism of photocatalytic action of semiconductor oxides; Handotai hikari shokubai no hyomen kozo seigyo to sayo kiko kaimei ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Takeuchi, H.; Sona, S.; Koike, H.; Hori, H.; Negishi, N.; Kohara, H.; Ibusuki, A. [National Institute for Resources and Environment, Tsukuba (Japan); Vakhtin, A.; Borovkov, V. [New Energy and Industrial Technology Development Organization, Tokyo, (Japan)

    1997-02-01

    Studies are made to define the working mechanism of semiconductor photocatalysts such as TiO2 and to establish designing guidelines for improving on their activity and functions. TiO2 in the air actively produces oxygen seeds for the oxidation and removal of NOx, etc. It is desired that a catalyst have a specific surface area large enough to retain the product of its action. To meet the need, a thin-film photocatalyst which is an aggregate of TiO2 crystals is produced by burning a film of a sol/gel system of reaction doped with macromolecules. This product has a larger specific surface area and is higher in pollutant-removing performance, and may be put into practical use. In another experiment, metal-carrying particles TiO2 suspended in water are employed for the reduction of CO2. Though the main product of catalysts carrying Pt or Pd is methane, a photocatalyst carrying RuO2 produces acetic acid mainly and loses less activity with the passage of time. A hybrid photocatalyst is composed of an organic pigment and inorganic semiconductor, synthesized through a covalent bond between a sililated-surface thin TiO2 film and porphyrin. It is confirmed that the newly developed process brings about an increase in electron migration efficiency. 3 figs.

  3. Report of the 14th IFAC symposium on automatic control in aerospace; Dai 14 kai IFAC `koku uchu ni okeru jido seigyo symposium` shusseki hokoku

    Energy Technology Data Exchange (ETDEWEB)

    Nakasuka, S. [The University of Tokyo, Tokyo (Japan)

    1999-04-05

    This is the report of the 14th International Federation of Automatic Control (IFAC) symposium on automatic control in aerospace, held on August 24 to 28 1998 at National Seoul University, ROK, by the author who participated in the symposium. This symposium is held by the IFAC`s Aerospace Technical Committee once in every 3 years for automatic control mainly for aerospace, in particular navigation, guidance and control of aircraft, satellites, rockets and the like. A total of 65 papers were presented to 25 sessions, with a total of 106 attendees. There were a number of attendees from Japan, and Russia sent an unusually large number of attendees. The general lectures covered the topics of, e.g., attitude and orbit control of satellites and the like, control of aircraft, guidance and control of missiles, navigation of aircraft and space aircraft, space robotics, failure diagnosis, basic theories on control, and system development. Reports on development and results of actual projects accounted for the majority in the sessions for control of satellites, rockets and the like. (NEDO)

  4. Research and development of photovoltaic power system. Characterization and control of surface/interface recombination velocity of crystalline silicon thin films; Taiyoko hatsuden system no kenkyu kaihatsu. Silicon kessho usumaku ni okeru hyomen kaimen saiketsugo sokudo no hyoka to seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Hasegawa, H. [Hokkaido University, Sapporo (Japan). Faculty of Engineering

    1994-12-01

    This paper reports the result obtained during fiscal 1994 on characterization and control of surface/interface recombination velocity of crystalline silicon thin films. To optimize design and manufacture of solar cells, it is necessary to identify correctly resistance factor (or doping) of bulk of materials, bulk minority carrier life, and recombination velocity on surface, passivation interface and electrode interface. A group in the Hokkaido University has been working since a few years ago on development of non-contact and non-destructive photo-luminescence surface level spectroscopy (PLS{sup 3}). A new non-contact C-V method was also introduced. Using these methods, basic discussions were given on possibility of separate measurements on surface/interface and bulk characteristics of solar cell materials. The PLS{sup 3} method and the non-contact C-V method were used for experimental discussions on evaluation of silicon mono-crystalline and poly-crystalline materials. Discussions were given on separate evaluations by using the DLTS method. 10 figs., 2 tabs.

  5. New injector for controllable transient spray characteristics in DI diesel engine. 2nd report. ; Controllability of injection rate and penetration characteristics of new pilot injector. Diesel funmu no katoteki seigyo wo mokuteki to shita inzekuta ni kansuru kenkyu. 2. ; Nozuru kaiben'atsu kahengata pilot inzekuta ni yoru funsharitsu seigyo to penetoreshon tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Yoshizu, F. (Zexel Corp., Tokyo (Japan))

    1994-04-25

    The author of this report has studied a spray control system which can make the transient control of spray in the direct injection diesel engine, and has designed and test-manufactured a variable nozzle injection valve opening pressure pilot injector. In this report, in order to obtain the basic data necessary for designing the above new type pilot injector, the effect of the operating condition of the pump on the control of injection rate has been evaluated using a conventional asymmetrical nozzle. Also in the operational condition at which the pilot injection has been obtained, the effect of the seat diameter and lift of the Dodge plunger on the injection rate and the penetration characteristics of the pilot injector has been elucidated. Part of the obtained knowledge is as follows; the injection quantity and separation can be maintained at almost constant values against the variation of the injection quantity, but against the rotating speed of the pump, they depend on the selection of the seat diameter of the Dodge plunger. By changing the above seat diameter and lifting amount, the above injection quantity and separation can be controlled. 3 refs., 11 figs., 1 tab.

  6. Development of a high efficiency membrane complex methane production unit. ; Development of instrumentation and control system technology. Koseino bunrimaku fukugo methane gas seizo sochi kaihatsu. ; Keisoku seigyo gijutsu no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Nakayama, S. (Mitsubishi Electric Corp., Tokyo (Japan))

    1990-10-01

    There is first reported on the development of a technique for estimating the activity of microorganisms used for methane fermentation (referred to as methane bacteria for brevity). A device has been developed that takes pictures expressing fluoroscopic images of methane bacteria floating in waste water, to each of which a fluorescent enzyme be belongs. A picture processing device connected to the above device removes various sorts of noises from these pictures so that they provide images which make it possible to evaluate the density of methane bacteria in the water. It is noted that there is proper correlation between enumerated data obtained by use of these devices and quantities representing the activity of methane bacteria, such as the rate of methane production, the rate of biochemical generation of heat, and others. There is next reported on a method of controlling methane fermentation process by use of a mathematical model. A process model has been developed, which may be used for controlling the operation of a small-scale test plant. Various parameters which are introduced into the model are estimated by means of the Kalman filter method so that the model can provide results agreeing with experimental data. Based on an analysis using this model, it is noted that the operation of a membrane complex reactor of suspension type is effectively controlled by regulating the concentration of suspension solids entering the membrane unit. 2 refs., 12 figs.

  7. Study of the development of high resolution sub-surface fluid monitoring system using Accurately Controlled Routine Operated Seismic Sources (ACROSS); Seimitsu seigyo shingen ni yoru chika ryutai koseido monitoring no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Kumazawa, M.; Ogawa, K.; Fujii, N.; Yamaoka, K.; Kumagai, H.; Takei, Y. [Nagoya University, Nagoya (Japan). Faculty of Science; Ishihara, K.; Nakaya, m. [New Energy and Industrial Technology Development Organization, Tokyo, (Japan)

    1997-02-01

    Fourier seismology capable of determining quantities related to elastic wave velocity dispersibility and non-elastic damping is under development, and studies are under way for the development of a sub-surface probing technology utilizing this seismology. It is deemed that the above-said quantities are related to the occurrence of earthquakes, behavior of sub-surface water, and migration of magma. In this method, precisely controlled sinusoidal waves are radiated and the received spectral data is subjected to cepstrum analysis, advantageous over other methods in that it achieves a high S/N ratio in a non-destructive way, facilitates deep structure analysis, and capable of monitoring changes with the elapse of time in such a structure. A newly-developed high-mobility transportable quake generator is described, which covers a wider frequency range and aims at the short-distance exploration of sub-surface conditions. Important components of the quake generator include an eccentric mass bearing capable of dealing with high-speed rotation enabling high frequency oscillation, variable mechanism for the primary moment of inertia, exciter and ground surface coupler allowing operations on a soft ground, and torque cancelling mechanism for the excitation of SH waves only. 3 figs.

  8. Concrete dam construction using computerized aggregate plant (CAP). ; Automatic production control using image processing. Jidoka kotsuzai plant (CAP) ni yoru concrete dam seko. ; Gazo shori wo chushinnishita seisanryo no jido seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Aso, K.; Wakiyama, I.; Kita, Y. (Hazama Gumi, Ltd., Tokyo (Japan))

    1992-10-25

    For an aggregate plant that crushes and sorts out rocks using crushers and screens, a computerized aggregate plant (CAP) was structured utilizing the latest micro computers and communications technology. While local automations have been carried out in other plants using relays and sequencers, this CAP development has been targeted at further economic optimization and manpower saving with the main aims placed on machine control using operation control and feedback control based on the quantity control method. The system consists of the crushing control system to adjust automatically the vibration feeders by detecting empty-full levels in the hoppers and load current in the crushers; the image processing system to analyze still images photographed by a CCD camera and measure amount of aggregates transported and grain shapes the automatic damper system to adjust amounts of materials unloaded from and charged into the crushers using a computer; and the system to link batcher plants with the aggregate plant. The system was given verification tests at several dam sites. 7 figs., 5 tabs.

  9. Improvement of vibration and noise by applying analysis technology. Development of active control technique of engine noise in a car cabin. Kaiseki gijutsu wo oyoshita shindo-soon no kaizen. Shashitsunai engine soon akutibu seigyo gijutsu no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Uchida, H.; Nakao, N.; Butsuen, T. (Matsuda Motor Corp., Hiroshima (Japan). Technology Research Inst.)

    1994-06-01

    It is difficult to reduce engine noise which is principal noise in a car cabin without producing an adverse effect on low cost production. Active noise control technique (ANC) has been developed to reduce engine noise compatible with low cost production. This paper discusses its control algorithm and the system configuration and presents experimental results. The filtered-x least mean square method is a well-known ANC algorithm, however, it often requires large amount of calculation exceeding the present capacity of a digital signal processor. An effective ANC algorithm is developed by the use of the repetitiveness of the engine noise. This paper describes the basic theory of the control algorithm, the extension to a multiple input and output system, the system configuration and experimental results. A noise control system with three microphones is designed with consideration of the spatial distribution of the noise and reduces noise in the whole cabin by 8dB(A) in the largest case. Active noise control technique is applicable to many areas and can be used for the reduction of noise and vibration other than engine noise. 5 refs., 7 figs., 1 tab.

  10. HYFLEX (Hypersonic Flight Experiment). Results of flight testing (Navigation, guidance and control of HYFLEX vehicle and actual reentry flight trajectory); Gokuchoonsoku hiko jikken (HYFLEX) ni tsuite. Hiko kekka wo chushin ni (koho yudo seigyo to jitsuhiko keiro)

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, K.; Takizawa, M. [National Aerospace Laboratory, Tokyo (Japan); Ishimoto, S.; Morito, T. [National Space Development Agency of Japan, Tokyo (Japan); Tsujioka, M.; Shimura, K. [Mitsubishi Heavy Industries, Ltd., Tokyo (Japan)

    1997-11-05

    The HYFLEX vehicle is the first reentry testing vehicle with an airframe generating lift in Japan. Establishment of guidance and control technology is one of the purposes. For the design of flight trajectory, in order to satisfy the constraint of J-1 rocket during launching and the heat resistance performance of HYFLEX, the altitude 110 km and ground speed 3.9 km/s were determined as an apogee condition of the reentry trajectory. For the trajectory design on the ground surface, were considered the insurance of radar tracking and telemetry transfer from the Ogasawara Tracking Station and the load reduction for development cost and attitude control system. The navigation, guidance and control system is composed of an inertia sensor unit, an on-board computer, and an on-board software (OBS). The attitude is controlled by the elevon at the rear end of airframe and the gas jet. The design requirements include an accuracy of flight trajectory and a stable flight by attitude control. In response to these requirements, OBS was divided into function units, i.e., navigation, guidance, and control, which were individually designed. The flight experiments were conducted as scheduled. 12 refs., 3 figs., 1 tab.

  11. FY 1995 annual report on development of techniques for creating high-quality crystalline materials for low-loss power controlling components; 1995 nendo teisonshitsu denryoku seigyo soshiyo kohinshitsu kessho zairyo sosei gijutsu kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-09-01

    The R and D project is implemented for manufacturing high-quality semiconductor crystalline materials of large size and uniform characteristics, in order to improve semiconductors as components for controlling power systems, and reduce power loss. The semiconductor melts, in particular silicon melt, is highly reactive, readily reacting with the atmosphere and crucible holding the melt, and it is difficult to collect their thermal properties. Therefore, an electro-magnetic levitation furnace working under a microgravity is used, to dispense with a crucible for measurement of their properties in the absence of thermal convection. The preliminary tests using the furnace produce surface tensions of the melts, because Ge is less reactive than silicon, stable in the form of a GeSbTe compound, and not wettable with Al{sub 2}O{sub 3}, MgO, SiO{sub 2} or Si{sub 3}N{sub 4}. The measurement of electric resistance of InSb indicates that InSb has characteristics of a semiconductor when it is solid and a metal when it is liquid, as is the case with Si. The program codes are developed by each researcher, and combined with each other to establish the comprehensive thermal flow analysis program, which includes all of the aspects of the internal CZ furnace structure for growing the crystals. (NEDO)

  12. Achievement report for fiscal 1998 on area consortium research and development business. Area consortium for venture business development by building base for small business (computer-controlled PCM-aided constant-temperature cracking and multimetal-smelting Technology); 1998 nendo venture kigyo ikuseigata chiiki consortium kenkyu kaihatsu (chusho kigyo sozo kibangata). Computer seigyo ni yoru PCM koon seigyo bunkai obyobi multi smelting giho no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Treatment of domestically produced waste of electrical appliances is studied, for which an energy-efficient constant-temperature cracking unit (medium/low-temperature cracking furnace) working on the PCM (phase change material) technology and a multimetal smelter (high-temperature cracking furnace) are combined. The system is to recover, regenerate, and reuse the valuables efficiently at low cost without allowing any waste out, and a resources cycle is established beyond the thermal cycle, which will to promote the recycling of used resources. As one of promising PCM materials, Al-Si excellent in thermal response is selected, and kept at 578-579 degrees C for one hour. The result obtained indicates that, once the PCM is molten, homogenous conditions may be restored semipermanently by heating but supplementarily to cover the lost heat, and that therefore it is a promising candidate for a heat source. Data are also collected about temperature control and auxiliary materials to be injected, necessary for collection from the smelter, and some metal was recovered. With a PCM layer enclosing the heated material, a computer-aided automatic control system is realized capable of adjusting the temperature to stay at a constant level. (NEDO)

  13. DC servo motor control using digital signal processors; Digital keisoku seigyo. 6. DSP wo mochiita DC servo motor seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Sato, T. [Max Co. Ltd., Tokyo (Japan)

    1999-03-15

    A digital control development effort is introduced, citing a case of DSP (digital signal processor)-aided DC servo motor control for the flat head type pen plotter. In a real plotter, a complicated nonlinear problem will arise because the natural frequency varies dependent upon the pen position. For the inhibition of such vibration which occurs during acceleration and deceleration, nonlinear elements have to be taken into consideration at the designing stage. In this report, the effort is focused on motor axis control only, and the DC servo control problem is solved as a linear problem. A DSP board type DS1102 of the dSPACE Corporation is named for this work. Using this board, the C code is automatically generated out of a control block constructed through SIMULINK, and a real-time test is conducted after downloading the code to the DSP processor. Since the quantity of DC servo motor rotation is quantized in an encoder, the result would contain much error and cause instability in the control if the quantity as obtained was subjected to differential calculus. Such being the case, velocity data for the control in this report are acquired by use of an observer. (NEDO)

  14. Evaluation on reliability and safety of marine diesel engine and mechatronics. Hakuyo diesel kikan to mechatronics no shinraiseiter dot anzensei hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Kido, H. (Kaigi Univ., Kobe (Japan)); Hashimoto, T. (Kobe Univ. of Mercantile Marine, Kobe (Japan))

    1992-06-01

    Reliability and safety are evaluated for main diesel engines, generator diesl engines, their mechatronics and auxiliary machines on ships. The evaluation is based no statistical analysis of field data collected from outland navigation by MO diesel engine the period of 1983-1988. Evaluation indexes are used for analysis, such as failure rate (total number of failure/total navigation hour), mean maintenance man power: mh (total maintenance man power for determined period/total number of failure), manning index: MI (maintenance manpower for repairing failure occurred during 1000 hour navigation). With respect of total failure of ship plant as a whole, the failure rate decreased from 13.2 to 7.4, namely almost to half and mh was tending to increase from 5.5 to 5.8, while MI decreased from 73.0 to 43.1. With respect to heavy failure which is regarded as a scale of safety, the failure rate remained within a range of 0.7-0.5 and mh showed down-up movement like 30{yields}10.4{yields}18.8, while MI moved like 18.6{yields}5{yields} 10.9 . 3 refs., 9 figs., 3 tabs.

  15. FY 1998 annual report on the development of plasma-aided surface treatment processes by in-situ controlling (second year); 1997 nendo in-situ seigyo ni yoru plasma riyo hyohi shori process no kaihatsu seika hokokusho (dai 2 nendo)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    This R and D project is aimed at stable production of high-quality, important machine members, which are difficult to sufficiently achieve the required properties by a single material, by carburization while minimizing use of expensive alloy metals, where high-temperature carburizing time is reduced by a plasma-aided system to save energy, and, at the same time, the conventional oil-hardening system is replaced by a He gas cooling/recycling system to solve the environmental problems involved in the former. The exhaust gases released from the plasma-aided system are adequately treated to prevent the problems caused thereby. The conditions of the plasma itself and treated surfaces are sensed in-situ, and the data are fed back to the process controlling system, to keep the treated object stable and high in quality, while minimizing energy consumption. The FY 1998 efforts were directed to studies on methods for sensing the plasma and treated surfaces, and specifications of a mini-plant for the demonstration tests, and to collection of characteristic data for development of some new products to be produced. (NEDO)

  16. Studies on power augmentation of horizontal axis wind turbine with variable speed control. 2nd Report. Determination of optimum slip due to second-power torque control; Kahensoku unten ni yoru field suiheijiku fusha no koseinoka ni kansuru kenkyu. 2. Jijo torque seigyo ni yoru saiteki suberi no kettei

    Energy Technology Data Exchange (ETDEWEB)

    Shimizu, Y.; Takada, M.; Maeda, T. [Mie University, Mie (Japan). Faculty of Engineering; Kamikawa, H.; Marumo, T. [Mie University, Mie (Japan)

    1998-03-01

    An inverter-assisted variable speed power generation system is subjected to a field test and the optimum slip for optimum operation against changing wind velocities is determined. The system is a horizontal-axis wind turbine of the up-wind type provided with three variable-pitch blades. The rotor is 8.2m in diameter, the rotation axis is positioned 12.7m above the ground, and the output is rated at 8kW. The rotation of the rotor is multiplied nine times by a step-up gear using a timing belt, and drives the 8-pole/3-phase squirrel-cage 8kW induction generator whose rotation is rated at 900rpm. The generated AC power is converted into DC by transistors before being charged into storage batteries. In the experiment, power is generated at variable speeds using the inverter and four types of second-power torque control are tested, different from each other in the magnitude of slips. After an overall evaluation of the amount of generated power and system efficiency, it is found that a slip of -2.0% is the optimum for the control of power generation in this type of wind turbine. 1 ref., 8 figs.

  17. Production of gerbera throughout a year by utilizing water heat accumulating heat pumps. Practical application of control of culture medium temperature by rock wool cultivation, and technology to produce gerbera throughout a year; Mizu chikunetsushiki heat pump wo riyoshite gabera wo shunen seisan. Rokku uruko ni yoru baichion seigyo to gabera no shunen seisan gijutsu no jitsuyoka

    Energy Technology Data Exchange (ETDEWEB)

    Aoki, M. [Kansai Electric Power Co. Inc., Osaka (Japan)

    1999-03-10

    In order to utilize electric power more effectively in agriculture, technology to produce gerbera throughout a year by using rock wool cultivation has been established, by which culture medium temperature is cooled (heated) by using heat pumps. Once implanted, gerbera can provide flowers for two years, and demand for its cut flowers is increasing year after year. However, because high temperature in summer can create deformed flowers, reducing the rate of acceptable flower production, cut flower production is suspended during summer at the present. Therefore, nighttime electric power was utilized to accumulate cold (warm) water in a heat accumulation tank, circulate the water, and control the rock wool culture medium temperature to 20 to 25 degrees C which is suitable for growth of the plant. This system has made it possible to reduce greenhouse warming cost in winter. A non-control area had the average culture medium temperature vary to 30 degrees C or higher in summer and 15 degrees C in winter, while the control area maintained the temperature at 22 {+-} 1 degrees C both in summer and winter. The control area created not too great difference in flow quality as flower diameter and weight as compared to that in the non-control area, but had better flower stalk length with less deformed flower production, enhanced the acceptable product rate, and attained annual yield as great as 1.4 times. The assignment to the system is cost reduction. (NEDO)

  18. systems

    Directory of Open Access Journals (Sweden)

    Alexander Leonessa

    2000-01-01

    Full Text Available A nonlinear robust control-system design framework predicated on a hierarchical switching controller architecture parameterized over a set of moving nominal system equilibria is developed. Specifically, using equilibria-dependent Lyapunov functions, a hierarchical nonlinear robust control strategy is developed that robustly stabilizes a given nonlinear system over a prescribed range of system uncertainty by robustly stabilizing a collection of nonlinear controlled uncertain subsystems. The robust switching nonlinear controller architecture is designed based on a generalized (lower semicontinuous Lyapunov function obtained by minimizing a potential function over a given switching set induced by the parameterized nominal system equilibria. The proposed framework robustly stabilizes a compact positively invariant set of a given nonlinear uncertain dynamical system with structured parametric uncertainty. Finally, the efficacy of the proposed approach is demonstrated on a jet engine propulsion control problem with uncertain pressure-flow map data.

  19. Report of the results of the fiscal 1997 regional consortium R and D project. Regional consortium energy field / Development of the plasma use surface treatment process by in-situ control (first fiscal year); 1997 nendo chiiki consortium kenkyu kaihatsu jigyo. Chiiki consortium energy bun`ya / in-situ seigyo ni yoru plasma riyo hyohi shori process no kaihatsu (daiichi nendo) seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    The paper described the fiscal 1997 result of the development. To know of in-plasma phenomena such as carburization and nitriding, a basic plasma experimental device was fabricated for quantitative measurement of reaction activity species. For the study of reaction control between plasma and substrate, a rotary analyzer type ellipsometer was fabricated as a method to detect composition and thickness of the deposit on the substrate surface. For He gas cooling after carburization and hardening, basic specifications for He gas refining/circulating system were confirmed. For perfect non-hazardous processing of exhaust gas from plasma carburization furnace, conducted was the thermodynamic computation of the process. Priority in order of the functions to be possessed as specifications for basic design of mini plant is plasma carburization, He gas cooling, and in-situ measurement. To make the most of the plasma use surface treatment as substitutes for expensive alloy elements, sliding parts/die-cast mold raw materials were carburized to measure the hardness. The Cr carbide coating technology by plasma CVD is also under study as an application example except carburization. 47 refs., 59 figs., 31 tabs.

  20. `Research and Development of Technology for Controlling the Structure of Multiple-Function Component,` local research and development of important technology for fiscal 1997. 2. Technological development of advanced surface treatment for methane-powered aircraft engine components (Laser-aided advanced treatment system (technology)); 1997 nendo juyo chiiki gijutsu kenkyu kaihatsu `fukugo kino buzai kozo seigyo gijutsu no kenkyu kaihatsu`. 2. Methane nenryo kokukiyo engine buzai no kodo hyomen kako gijutsu kaihatsu (laser oyo senshin kako system gijutsu)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    Surface reforming technologies, such as laser-aided Ti alloying, are studied for developing erosion-resistant materials for the fore section of a methane-fueled aircraft engine. In the formation of intermetallic compound film, the laser plasma hybrid spraying is applied for the formation of a film which is 100-400 times higher than Ti6Al4V in terms of resistance to erosion. For the quantitative evaluation of bond strength, a boundary shear testing jig is built. When the laser irradiating conditions are optimized, the boundary shear strength is elevated to 150-230MPa. NiAl film is studied for realizing resistance to high-temperature oxidation, and then a perfect NiAl film is obtained, which is done by use of a mechanical alloying powder mixed on the atomic level. In the manufacture of ceramic cermet film, a powder is studied, in which powder SiC and Al2O3, excellent in high-temperature oxidation characteristics and fracture toughness, are the parent materials which are coated by NiCr. It is found that an excellent oxidation-resistant film will be manufactured by use of this powder. 40 refs., 132 figs., 12 tabs.

  1. FY 1993 report of the results of the R and D of the important regional technology - Laser application advanced processing system technology. II. R and D of the composite functional member structure control technology (Development of the high grade surface processing technology of methane fueled aircraft use engine members); 1993 nendo juyo chiiki gijutsu kenkyu kaihtsu (fukugo kino buzai kozo seigyo gijutsu no kenkyu kaihatsu (methane nenryo kokukiyo engine buzai no kodo hyomen kako gijutsu kaihatsu). 2. Laser oyo senshin kako system gijutsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-03-01

    In the fields of aerospace, energy, etc., the development is expected of materials for engine members which are reliable and durable for a long time under the severe environment. Materials are developed which are erosion-resistant under the non-erosion environment of the front of engine of methane fueled aircraft. The basic experiment was commenced on the fabrication of micro-fine surface of Ti-6Al-4V alloys, etc. by superimposed laser beam irradiation. As a technology to fabricate the composite surface layer by supplying alloy components on the material surface, the development was started of a technology to form hard coating by irradiating laser to the Ti alloy surface put with metal elements and compounds on. Literature survey was made of the laser surface reforming technology of Ti alloys, etc. using JOIS. As to the fabrication of the composite surface layer, it was found out that the layer is easy to be brittle together with hardness. In the experiment on the micro-fine surface fabrication, it was found out that as a characteristic of light collector, the integration mirror is flat in strength distribution. Concerning the fabrication of the composite surface layer, it is a must to make it gradient because micro cracks are generated with the rising surface hardness. (NEDO)

  2. Surface design of powder by precise modification; Kotai hyomen no seimitsuna kaishitsu seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Chikazawa, Masatoshi

    1999-01-01

    The progress of the recent technology is it in high performance, the one manufactured by development of the high function material. It is skillful, and the nature of this effective material is greatly influenced by the various materialities of the raw material powder and a function again. Therefore, the moment it diversifies all the more from now on, a demand for the raw material powder is thought to become more precise control than the thing of the materiality of the powder and the function. Precise quality function technology on the surface of the powder which should make the materiality of the purpose and a functional expression possible is very important to meet such a requirement. Quality silica powder is used as the sample, and you must investigate about the micro-mechanism of the water control by effective based quality of surface from such a position. (NEDO)

  3. Study of active noise control in ducts. Kanrokei ni okeru nodoteki soon seigyo hoho no kento

    Energy Technology Data Exchange (ETDEWEB)

    Nakao, Yoshiatsu

    1988-08-01

    On an active control to reduce noise in ducts, the theoretical and experimental studies of the energies ratio of the noise and the cancelling sound which should be produced by a speaker, were carried out. In case the cancelling sound was produced by the speaker which was set in the branch duct, the energies ratio varied with the setting position, the length and the cross section of the branch duct and the frequency of the noise. As the non-dimensional length of the branch duct was drawing near 0.5, the energies ratio became small. But when the non-dimensional length was 0, the ratio did not become smaller than 1. The experimental test confirmed that it was possible to reduce the noise by the cancelling sound which energies ratio was as small as about one hundredth of the noise. In case the noise was the pure sound, and the wave-length was over one fourth of the duct diameter, it was possible to reduce the noise more than 40 dB. And in case the wave-length was one eighth the reduction quantity was about 20 dB. Therefore, in case the noise is the pure sound or close to the pure sound, it is possible to apply the active noise control. 5 references, 23 figures.

  4. Optical technology applied to jet engine; Jet engine seigyo eno hikari gijutsu no tekiyo

    Energy Technology Data Exchange (ETDEWEB)

    Nakajima, T.; Ebina, K.; Endo, M. [Ishikawajima-Harima Heavy Industries Co. Ltd., Tokyo (Japan)

    1997-09-01

    Pyrometer that can be mounted on an aircraft engine is developed for measuring engine turbine blade temperatures. Energy radiated from the blade surface is collected by a lens and then forwarded to a photoelectric conversion photodiode through a heat-resistant optical fiber. A cleaning/purging mechanism is provided in case the lens collects dirt that will attenuate the signal for the indication of a temperature that is lower than the true temperature (in a cold shift phenomenon). The pyrometer is tested on an engine, when a measurement accuracy of {+-}10degC is attained without cold shift taking place. It responds to changes more swiftly than conventional types, which justifies its application to the control of engines. Since it works effectively to connect a bunch of optical fibers, rather than conventional electric wires, to the printed circuit board for guiding optical signals to a printed circuit board in a digital control unit, an optical backplane structure is developed. This structure is designed to be an optical waveguide type which can incorporate into itself some mechanisms of synthesizer, optical waveguide coupler, and light filter, in case of need for handling multiple transmission. The pyrometer is tested on an aircraft engine in operation at high and low temperatures, and demonstrates satisfying light-receiving and light-emitting properties. 4 refs., 10 figs.

  5. Reality and limitations in application of adaptive control. Tekio seigyo no jissai to tekiyo genkai

    Energy Technology Data Exchange (ETDEWEB)

    Tomizuka, M. (Univ. of Calif., Berkeley (United States of America))

    1990-08-10

    Approximately 20 years have passed since adaptive control transformed from art to science as it sprouted up with a stability theory as a core thereof. In the meantime, many application cases have been reported, and the expectation for the adaptive control is uprising. In this report, the reality and the application limitation of the adaptive control from the standpoint of how to use it are described. Described items are as follows: Discrete type adaptive control based on pole placement - direct method. structure of the controller. adaptive control rule and parameter identification algorithm. problems inapplication - Examination of linearity. Model dimensions. Zero point of the control target. Influence of external disturbance. Adaptive feed forward control. Introduction of integral action. Influence of noise. It is important that the simplification of the whole algorithm and adaptation of the theory are made by fully utilizing the foresighted informations on the control targets by not only simply applying a genearalized theory to practice. 14 refs., 3 figs.

  6. Study of fast control of optical polarization; Henko jotai no kosoku seigyo hoshiki no kento

    Energy Technology Data Exchange (ETDEWEB)

    Kurono, M. [Central Research Institute of Electric Power Industry, Tokyo (Japan)

    1996-03-01

    To develop a control method of SOP (state of optical polarization) for coping with the polarization fluctuation velocity of OPGW (optical ground wire), fast control techniques of optical polarization was investigated using electro-optic devices. Based on the results, polarization control equipment was designed. Birefringence in the applied electric field is utilized for the polarization control using electro-optic devices. High electric field region with long configuration by the electric fields intersecting at right angles to the optical pass is effective for enhancing the voltage sensitivity. A z-propagation bulk-type LN (LiNbO3; lithium niobate) crystal was employed, to examine size and voltage which can ensure the phase shift angle required for the polarization control. As a result, the size of 40 mm length and 1 mm thickness and the voltage of about 500 V at the wavelength of 1.55 {mu}m were obtained, which was feasible to be installed. A structure of the element with four electrodes on each face was proposed. When the applied voltage was controlled, the principal axis angle of birefringence was a half of the electric field rotating angle, and the phase shift angle was in proportion to the strength of electric field. It was theoretically clarified that the simultaneous controls of the both can be performed. Thus, the fast polarization control coping with the polarization fluctuation velocity of OPGW was revaluated. 30 refs., 7 figs., 4 tabs.

  7. Development and demonstration of optical polarization controller; Hikari henpa seigyo sochi no kaihatsu to jissho

    Energy Technology Data Exchange (ETDEWEB)

    Kurono, M. [Central Research Institute of Electric Power Industry, Tokyo (Japan)

    1997-04-01

    If fiber transmission light can be controlled in a stabilized polarization state, realization of coherent optical communication is anticipated. In the case of adopting it to OPGW, however, it is necessary to compensate high speed polarization variation caused by lightning strike. But this was difficult in the conventional method. Accordingly, a high speed polarization control method was proposed which uses an electric effect of lithium niobate (LN) crystals. In the study, a polarization control unit was manufactured based on the method proposed and the performance was demonstrated. As a result of measuring output light with input light changed in every state of polarization, the object horizontal polarization component obtained a stabilized light intensity at {+-}0.1dB, and a light intensity of the component slipped out of the horizontal polarization was suppressed under -20dB. To cope with the polarization variation by lightning strike, it is necessary to make the control delay 10{mu}sec or below, and improvement in processing unit, etc. may make it possible since LN crystals respond below 1{mu}sec. High speed control of the infinitely continuing arbitrary polarization variation became possible. 14 refs., 19 figs.

  8. CO2 absorption characteristics of monoethanol amine aqueous solution and recovery of CO2 from marine engine exhaust; Monoethanol amine suiyoeki no CO2 kyushu tokusei to hakuyo kikan no CO2 kaishu

    Energy Technology Data Exchange (ETDEWEB)

    Ikame, M.; Suga, S.; Hiraoka, K.; Kumakura, T. [Ship Research Inst., Tokyo (Japan)

    1994-04-13

    Investigations were made on characteristics of CO2 absorption into monoethanol amine aqueous solution under normal pressure as a method of recovering CO2, the CO2 concentration and effect of the accompanying gases. Furthermore, assuming a large marine diesel engine using methanol as a fuel, the experimental result was used to discuss a size of the CO2 absorbing device. Assuming exhaust gases from a methanol-fueled diesel engine and steam reformed gas of methanol, from which CO2 is to be recovered, the experiment used two kinds of accompanying gases, N2 and H2, and the CO2 concentrations of 5% to 25% by volume. The relationship between the CO2 material balance and the substance movement between gas and liquid based on the double boundary film theory was put into order to derive an experiment equation. This equation was capable of expression with an error of less than {plus_minus}35%. This paper indicates by using the experimental result a method to derive the size of an absorbing and filling layer for CO2 in exhaust gases from a methanol fueled marine diesel engine. Given an example, the volume of the filling layer in the absorption column is required to be about 12% of the engine volume of 770m{sup 3}, and the absorption flow rate to be 65.4kg/s. 4 refs., 6 figs., 1 tab.

  9. systems

    Directory of Open Access Journals (Sweden)

    Patrick L. Brockett

    1978-01-01

    Full Text Available Suppose S={{Xnj,   j=1,2,…,kn}} is an infinitesimal system of random variables whose centered sums converge in law to a (necessarily infinitely divisible distribution with Levy representation determined by the triple (γ,σ2,M. If {Yj,   j=1,2,…} are independent indentically distributed random variables independent of S, then the system S′={{YjXnj,j=1,2,…,kn}} is obtained by randomizing the scale parameters in S according to the distribution of Y1. We give sufficient conditions on the distribution of Y in terms of an index of convergence of S, to insure that centered sums from S′ be convergent. If such sums converge to a distribution determined by (γ′,(σ′2,Λ, then the exact relationship between (γ,σ2,M and (γ′,(σ′2,Λ is established. Also investigated is when limit distributions from S and S′ are of the same type, and conditions insuring products of random variables belong to the domain of attraction of a stable law.

  10. system

    Science.gov (United States)

    Garcilazo, H.; Valcarce, A.; Vijande, J.

    2017-07-01

    Using local central Yukawa-type Malfliet-Tjon interactions reproducing the low-energy parameters and phase shifts of the nn system, and the latest updates of the nΛ and ΛΛ Nijmegen ESC08c potentials, we study the possible existence of a bound state. Our results indicate that the is unbound, being just above threshold. We discuss the role played by the 1 S 0 nn repulsive term of the Yukawa-type Malfliet-Tjon interaction. Supported by COFAA-IPN (México), Ministerio de Economía, Industria y Competitividad and EU FEDER (FPA2013-47443, FPA2015-69714-REDT, FPA2016-77177), Junta de Castilla y León (SA041U16) and Generalitat Valenciana PrometeoII/2014/066

  11. SYSTEM

    Directory of Open Access Journals (Sweden)

    K. Swarnalatha

    2013-01-01

    Full Text Available Risk analysis of urban aquatic systems due to heavy metals turns significant due to their peculiar properties viz. persis tence, non-degradab ility, toxicity, and accumulation. Akkulam Veli (AV, an urba n tropical lake in south India is subjected to various environmental stresses due to multiple waste discharge, sand mining, developmental activities, tour ism related activitie s etc. Hence, a comprehensive approach is adopted for risk assessment using modified degree of contamination factor, toxicity units based on numerical sediment quality guidelines (SQGs, and potentialecological risk indices. The study revealed the presence of toxic metals such as Cr, C d, Pb and As and the lake is rated under ‘low ecological risk’ category.

  12. Achievement report for fiscal 1998 on area consortium research and development business. Area consortium for venture business development by building base for small business (high-efficiency superhigh-accuracy grinding technology by nano-scale in-process measurement and control using novel grinding wheel); 1998 nendo venture kigyo ikuseigata chiiki consortium kenkyu kaihatsu (chusho kigyo sozo kibangata). Shingata kensaku toishi wo mochiita nano in-process keisoku seigyo ni yoru konoritsu choseimitsu kensaku kako gijutsu no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    The aim is to develop a superflat grinding system for functional devices such as hard disks and magnetic heads. Cast iron powder is used as bonding material high in reacting with diamond for an increase in the anchoring power. A chemical reaction occurs to realize a strong bond between the two, producing a precision grinding wheel long in life and high in efficiency. A wheel with some hollows is also developed in which the grits have to bear more load because of the hollows, this achieving grinding efficiency five times higher than that of other types of the same grit size. A system is developed, provided with a constant pressure mechanism for the grinding direction and constant travel mechanism normal to the work surface. Using the constant pressure system, the grinding speed depends on the wheel grinding capability, and then the wheel is allowed to exhibits its best. The system suffers less clogging than the conventional ones. The specific grinding energy which is the index of the match between the wheel and the work may be determined, and this enables prompt condition optimization. It is proved that the wheel with hollows is remarkably higher in grinding capability than wheels of the same grit size on the market. The two are found to be alike in achieving top-class finish in terms of surface coarseness and flatness. (NEDO)

  13. Fiscal 1997 project on the R and D of industrial scientific technology under consignment from NEDO. Report on the results of the R and D of technologies to invent original high-functional materials (development of precise structure control materials for enhancement of oil refining); 1997 nendo sangyo kagaku gijutsu kenkyu kaihatsu jigyo Shin Energy Sangyo Gijutsu Sogo Kaihatsu Kiko itaku. Dokusoteki kokino zairyo sosei gijutsu no kenkyu kaihatsu (sekiyu seisei kodoka seimitsu kozo seigyo zairyo kaihatsu) seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    The paper described the R and D of technologies for creating original high-functional materials under the R and D system of industrial scientific technology. Japan chemical Innovation Institute (JCII) is conducting intensive joint researches under consignment from NEDO with private companies, universities and national research institutes. Among those, the paper reported the fiscal 1997 results of the following two researches conducted as development of precise structure control materials for enhancement of oil refining: precision catalytic polymerization and multi-dimensional space polymer. As to the precision catalytic polymerization, the paper is aimed at developing base technologies for the molecular weight and stereoregularity by which remarkable improvement in performance of addition polymerization type polymer can be expected, and on the development of a polymerization catalyst which arbitarily controls the primary structure such as end group structure and of a precision addition polymerization process. Subthemes are addition polymerization with limit and oriented catalytic polymerization. In relation to multi-dimensional space polymer, the paper is aimed at developing highly selective polymerization technology of aromatic compounds using enzyme related catalysts and synthesis technology of regular structure polymer, and synthesis technology of new polymer group having a new chain pattern except covalent bond/new polymer group having characteristics in three-dimensional space geometric structure. 244 refs,, 160 figs., 94 tabs.

  14. Function development through microstructure control. Control of crystal axis orientation of zinc oxide and its optical properties; Soshiki seigyo ni yoru kino hatsugen. Sanka aen no haikosei seigyo to kogakuteki kino

    Energy Technology Data Exchange (ETDEWEB)

    Fujitsu, S. [Shonan Institute of Technology, Kanagawa (Japan); Watanabe, Y. [Science University of Tokyo, Tokyo (Japan)

    1998-04-01

    Described herein are light beam deflectors of thin piezoelectric films, and synthesis, photoconductance and nonlinear optical measurement of light-distributing, transparent zinc oxide, viewed from application of zinc oxide to optical purposes. Supersonic waves, when passing through a transparent medium, leaves compressional waves of strain, causing cyclic changes in refractive index. This phenomenon can be used for diffraction of light. A light beam deflector is one of the examples of using this phenomenon applied to a thin piezoelectric film of zinc oxide. The authors have developed a process to synthesize transparent, polycrystalline zinc oxide of high C-axis orientation. A seed of sintered zinc oxide is placed at the center of an electrical oven, and a substrate in the temperature-gradient zone. The seed evaporates, when heated to around 1200degC, to leave the zinc oxide crystal grains on the substrate, which grow preferentially in the C-axis direction at around 300{mu}m/h. Zinc oxide is known as a compound of anisotropy in properties by crystal orientation, and shows piezoelectric and photoconducting properties. 8 refs., 7 figs.

  15. Boundary layer control and profile drag of stationkeeping airships; Teiryugata hikosen no kyokaiso seigyo to keijo teiko

    Energy Technology Data Exchange (ETDEWEB)

    Matsuuchi, K.; Yamamura, N. [University of Tsukuba, Tsukuba (Japan); Eguchi, Y. [Honda Motor Co. Ltd., Tokyo (Japan); Adachi, T. [Osaka Sangyo Univ., Osaka (Japan); Onda, M. [Mechanical Engineering Lab., Tokyo (Japan)

    1997-03-25

    Our aim is to optimize the aerodynamic shape of airships, which cruise at high Reynolds number. A cryogenic wind tunnel is used to achieve the desired flow. In the present paper we discuss the drag coefficient for airship models incorporating suction slots, for the purpose of boundary layer control. The pressure distributions on the models are measured over a wide range of Reynolds number for various suction discharges. By integrating the pressure distributions, it was found that the profile drag could be reduced using boundary layer control as low as the theoretical limit. Furthermore, the flow patterns around the models can be classified into four categories. The relationship between suction and surface velocity was also examined, which is critical in understanding drag reduction. 7 refs., 12 figs., 2 tabs.

  16. Optimum differential terms for lateral motion control performance on the vehicle; Yokoundo seigyo seino ni oyobosu hisenkei bibunko no saitekika

    Energy Technology Data Exchange (ETDEWEB)

    Miyamori, A. [Japan Consumer Information Center, Tokyo (Japan); Nakaya, H. [Shibaura Institute of Technology, Tokyo (Japan)

    1997-10-01

    As general knowledge, the lateral control performance of vehicle improves as differential terms increases. But subjective rating has its limits of effect. The coefficient of differential terms and saturated steer angle velocity were set up using the experimental vehicle in several steps. Consequently, the optimum range, that subjective and objective rating were compatible, were made clear. 4 refs., 6 figs., 1 tab.

  17. Simulation of speed control in acceleration mode of a heavy duty vehicle; Ogatasha no kasokuji ni okeru shasoku seigyo simulation

    Energy Technology Data Exchange (ETDEWEB)

    Endo, S.; Ukawa, H. [Isuzu Advanced Engineering Center, Ltd., Tokyo (Japan); Sanada, K.; Kitagawa, A. [Tokyo Institute of Technology, Tokyo (Japan)

    1997-10-01

    A control law of speed of a heavy duty vehicle in acceleration mode is presented, which is an extended version of a control law in deceleration mode proposed by the authors. The control law is based on constant acceleration strategy. Using the control law, target velocity and target distance can be performed. Both control laws for acceleration and deceleration mode can be represented by a unified mathematical formulae. Some simulation results are shown to demonstrate the control performance. 7 refs., 9 figs., 2 tabs.

  18. Study on the advanced orientation control technology of biopolymers; Seitai kobunshi zairyo no kodo haiko hairetsu seigyo gijutsu no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    Creation of new functional organic materials for the medical application has been investigated under the microgravity. Facilities of the Japan Microgravity Center were used for this study. For the high-speed synthesis of uniform polymer particles under the microgravity condition for ten seconds, appropriately good results were obtained in the oxidation polymerization of pyrroles. For the synthesis of organic conductive thin films by the electrolytic polymerization, the resistance of electrolyte became larger in the microgravity field. It was required to set conditions so as to enhance the effects of microgravity environment. For the orientation control and thin film formation of proteins, the bacteriorhodopsin was examined. It was found that the microgravity improved the quality of electrocoatings. When the surface tension and viscosity of coating liquid were appropriately controlled under the microgravity, thin films were able to be prepared by utilizing a change from 1g to {mu}g. When the high viscosity fluid is placed in the artificial two-dimensional space composing of two parallel plates, and the low viscosity fluid, such as air, is injected into the above, the interface grows in the finger shaped pattern, namely, viscous fingering. The influence of gravity on this phenomenon was also investigated. 11 refs., 45 figs., 5 tabs.

  19. Controllability of arc jet from arc horns with slits. Slit tsuki arc horn no arc jet seigyo tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Sunabe, K.; Inaba, T.; Fukagawa, H. (Central Research Institute of Electric Power Industry, Tokyo (Japan)); Kito, Y. (Nagoya University, Nagoya (Japan))

    1993-09-20

    To improve the corona discharge characteristics, test preparation was made of hollow rod form horns with slits for the overhead power transmission line use. Two types of horn electrode were prepared. The first horn electrode is of a hollow hemisphere fitted with and divided by slits on its tip. The second horn electrode is the first one which is further fitted with rod form electrode at the center of its tip. In experiment, relation was obtained between the deflection angle of arc jet and arc current, electrode diameter, etc., through an observation of arc jet by high speed camera. Melting loss of electrode was also made clear. The following knowledge was obtained: For the first horn electrode, the deflection angle can be limited to a narrow range by a division with slits, e.g., within 30 degrees under the condition of 5kA in arc current, 4 in number of sectors and 200mm in diameter. For the second horn electrode, the deflection angle can be limited to within 20 degrees under the condition of 5kA in arc current and 4 in number of sectors. The arc current is also limited to below 5kA by an addition of 50mm diameter central electrode. As a conclusion for the first electrode, the arc jet control characteristics excels in the stronger arc current range than 5kA, while for the second electrode, they are effective in the weaker arc current range than 5kA. 6 refs., 19 figs., 1 tab.

  20. Controllability of arc jet from arc horns with slits. Suritto tsuki aku hon no aku jetto seigyo tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Sunabe, Kinya; Fukagawa, Hirotada.; (Central Research Inst. of Electric Power Industry, Tokyo, Japan)

    1989-05-01

    New horns in jumper of steel tower for ultra-super high tension transmission line were developed to experiment the retaining performance of the arc jet. A type horn has the hemispherical tip with slits and B type horn has additionally the electrode in the central part. If the division number of slits are 4 or 6 in the A type horn, the occurrence distribution of the angle(theta)between two axes of the arc jet and of the electrode can be limited between 16 and 12 degree respectively at conditions of the electrode of 200mm diameter and 5kA arc current. Especially, the arc jet controllability is superior at heavy current area of 5kA or more. The thickness of diameter cannot result any difference. The slit division number in the B type cannot result any difference. That is, theta can be limited to less than 20 degree at the rate of 90% or more at 5kA or less but theta widens to 40 degree at 10kA or more. This means that B type is excellent in smaller current area where theta can be limited to the tip area around the central electrode. It may appear better that the horn has the flat tip shape, 4 to 6 slits, thick central electrode and large gap between the external electrode. 3 refs., 23 figs., 1 tab.

  1. Optimal control of reflux ratio for batch distillation; Bacchi joryu ni okeru kanryuhi no saiteki kido to seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Morimoto, Jun [Sankyo Corp., Tokyo (Japan); Suzuki, Mutsumi [Tohoku University, Miyagi (Japan). Department of Chemical Engineering

    1999-03-10

    To obtain maximum production under minimum utility-cost, the optimal operation of reflux ratio is considered for a batch distillation process. Pontryagin's maximum principle is one of the solutions to calculate such an optimal operation, but it requires extensive trial and error. In this paper, a faster algorithm is proposed to modify the initial values of Hamilton's multiplier. With the rapid growth of computer power, this algorithm will provide a way to realize the real-time optimization and control of the reflux ratio. To reduce the on-line calculation, a control table for the optimal operation can by calculated off-line as a function of state variables. These control methods provide the real optimal operation for a given evaluation function. (author)

  2. Research on crystal growth by using pressure as a control parameter; Atsuryoku seigyo ni yoru kessho seicho ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-10-31

    This research project aims to establish a technique for crystal growth using pressure as a principal control parameter, and combining it with a microgravity condition, to develop a novel process material fabrication. Since the solubility of materials depends on pressure, it is possible to control a supersaturated condition for crystal growth by changing pressure. The growth condition can be controlled precisely, which is not possible by conventional methods that vary temperature and other factors. On the other hand, because a concentration diffusing field is formed autonomically around crystals in association with their growth, density convection is generated under gravity as a result of difference in the concentrations, making the growth conditions severely complex and uncontrollable. Ideal crystal growth condition control may be possible if the pressure control is performed under micro-gravity by which generation of the density convection can be suppressed. Realization has been achieved on in-situ observation by using high-magnification microscope which uses a diamond anvil cell, development of a hydraulic type optic pressure cell, and a high- speed crystal growing technology by means of pressure control utilizing the cell. New findings were also obtained on effects of pressure on crystal forms, and the pressure induced solid phase transfer mechanism. 67 refs., 49 figs., 3 tabs.

  3. Further advancement of chassis-dynamometer measurement and control technology; Kodoka suru chassis dinamo keisoku seigyo gijutsu

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, Y. [Meidensha Corp., Tokyo (Japan)

    1999-03-01

    A new chassis-dynamometer was developed and put into the practical use in 1992. Currently this chassis-dynamometer, in which rollers are mounted on the AC-dynamometer shaft end, is being used in the majority of passenger car testing application. This paper present bow the associated measurement and control technology was upgraded and discusses the future trend in this field. (author)

  4. Fiscal 1997 project on the R and D of industrial scientific technology under consignment form NEDO. Report on the results of the R and D of technologies to invent original high-functional materials (technical development of structure control materials / R and D of molecular harmonized materials); 1997 nendo sangyo kagaku gijutsu kenkyu kaihatsu jigyo Shin Energy Sangyo Gijutsu Sogo Kaihatsu Kiko itaku. Dokusoteki kokino zairyo sosei gijutsu no kenkyu kaihatsu (kozo seigyo zairyo gijutsu kaihatsu) bunshi kyocho zairyo no kenkyu kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    By establishing microtechnology using molecular-level bottoming-up (molecular harmonization) by imitating the system of living organism, the paper described the R and D of molecular harmonized materials aiming at developing high-functional/high-performance materials such as high-performance catalyst, photo-information functional materials and sensing materials. Under consignment from NEDO, Japan Chemical innovation Institute started the 5-year plan in fiscal 1997. Self-assembled molecular films, in which organic molecules are orderly arranged by self-assembly, aim at developing new memory/optical/sensing materials. Mesophase materials which are such materials as liquid crystal showing the intermediate state between solid and liquid, develop optical/photoconductive materials using precise molecular orientation controllability. Macroporous materials are such substances as zeolite having molecular size micro pores. The paper aims at establishment of synthesis techniques of them and development of high-performance catalyst, etc. using them. In the comprehensive investigational research, conducted was a survey of the trend overseas in addition to a study of subjects in question. Further, the supporting basic study was reconsigned to universities, etc. 57 refs., 62 figs., 17 tabs.

  5. Fiscal 1997 project on the R and D of industrial scientific technology under consignment from NEDO. Report on the results of the R and D of technologies to invent original high-functional materials (technical development of structure control materials / R and D of multi-stimuli-responsive materials); 1997 nendo sangyo kagaku gijutsu kenkyu kaihatsu jigyo Shin Energy Sangyo Gijutsu Sogo Kaihatsu Kiko itaku. Dokusoteki kokino zairyo sosei gijutsu no kenkyu kaihatsu (kozo seigyo zairyo gijutsu kaihatsu) kodo shigeki oto zairyo no kenkyu kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    The paper described multi-stimuli-responsive materials out of the technology developments for creating original high-functional materials under the system of R and D of industrial scientific technologies. These are materials which repeatedly reproduce functions such as separation, penetration and movement in response to stimuli by imitating living organisms. In relation to polymer multi-stimuli-responsive materials, various copolymers were synthesized using N-acetyl (meta) acrylamide, of which the synthesis method was established in the previous fiscal year, as a main component, and thermal responsive polymer with upper critical solution temperature which becomes a base of separation functional materials was searched for. By immobilizing it with molecular recognition ligand, measured was thermal dependence of affinity of the immobilized matter to albumin. Also studied were molecular recognition cell adhesion/separation functional materials. Concerning composite multi-stimuli-responsive materials, with the use of silica microcapsule surface-immobilized with silane coupling agent, studied were the optimum conditions for immobilizing thermo-responsive polymer to the surface of the capsule. Using motion functional materials by ion exchange resin, obtained was motion functionality which is satisfactory at the state of practical use. 94 refs., 82 figs., 16 tabs.

  6. System Budgets

    DEFF Research Database (Denmark)

    Jeppesen, Palle

    1996-01-01

    The lecture note is aimed at introducing system budgets for optical communication systems. It treats optical fiber communication systems (six generations), system design, bandwidth effects, other system impairments and optical amplifiers.......The lecture note is aimed at introducing system budgets for optical communication systems. It treats optical fiber communication systems (six generations), system design, bandwidth effects, other system impairments and optical amplifiers....

  7. Advanced arc-welding robot with laser sensor technology and its application field; Laser sensor wo mochiita yosetsu robot no seigyo gijutsu no kaihatsu to tekiyo

    Energy Technology Data Exchange (ETDEWEB)

    Kugai, K.; Izawa, A. [Daihen Corporation, Osaka (Japan); Muto, S.; Mori, T. [NTT Fanet Systems Corp., Tokyo (Japan)

    1998-05-01

    A welding robot with a laser vision sensor was developed. The sensor used in this welding robot consists of a sensor head, a sensor controller, and a profile control board. The sensor controller calculates shapes of welding lines in the reference coordinates of a robot by processing different measurements, and the control board calculates them by using two-dimensional cross section information measured by the sensor. Distance from the sensor to the measurement point is measured as a result of the spot light injected from the sensor head being diffused and reflected on groove surface, part of which is collected to form an image. In addition, cross section shape of the groove is measured by giving the mirror a reciprocal arc movement in a direction perpendicular to the groove to move the mirror over the measurements points while making measurement. Influence of the arc light can be reduced by making the laser light flash sufficiently quicker than the changing speed of flashing of the arc light, and by removing information available when the light is cancelled from information available when it is lit. Extraction of points from an image as the sensor`s technological feature is performed by using the relationship between edge points and intersecting points in partial curve approximation. 10 figs., 1 tab.

  8. Control of population of excited nitrogen molecules by mixing hydrogen in low pressure discharge; Chisso jun`antei reiki bunshi mitsudo no quenching ni yoru seigyo no kento

    Energy Technology Data Exchange (ETDEWEB)

    Uematsu, K.; Yumoto, M.; Sakai, T. [Musashi Institute of Technology, Tokyo (Japan)

    1998-06-01

    The authors have studied on surface treatment of PTFE by a low pressure discharge. It is deduced that excited nitrogen molecules contribute to introduce polar components on the surface. To confirm the speculation, we tried to change population of metastable nitrogen N2 (A{sup 3}{Sigma}u{sup +}) by quenching precursor N2 (B{sup 3}{pi}g), with hydrogen molecule. The decrease of relaxation time which indicates a change of excited molecule and measured by emission spectroscopy using a time after glow method was obtained. As a result, the relaxation times of N2 (B{sup 3}{pi}g) and N2 (A{sup 3}{Sigma}u{sup +}) decreased to 55% and 20% respectively, when mixing ratio of hydrogen was 3%. It was also deduced that hydrogen atom may take a part in a quenching process of N2 (A{sup 3}{Sigma}u{sup +}). 14 refs., 11 figs., 1 tab.

  9. Application of photo-excitation reaction on titanium oxide thin film for control of wettability; Sanka chitann hakumakujo no hikari reiki hanno no nuresei seigyo eno oyo

    Energy Technology Data Exchange (ETDEWEB)

    Watanabe, T.; Nakajima, A.; Hashimoto, K. [The Univ. of Tokyo, Tokyo (Japan); Takada, Y. [Kyushu Univ., Fukuoka (Japan)

    2000-03-31

    It is clarified that the photo-excitation hydrophilic reaction increasing wettability remarkably is induced by changing surface structure of titanium oxide radiated light. There are already many examples being in practical use of coating products applied hydrophilic reaction of titanium oxide surface such as drip-proof side millers for automobiles, self-cleaning building materials, and the like. When surface of titanium oxide having high activities for oxidisation and decomposition is coated organic materials and radiated light, wettability of surface changes as organic materials are decomposed. If it is possible to change wettability shaping pattern drastically by radiating light, the possibility of application for printing materials will be developed. After increasing contact angle by coating water and oil repellent on the titanium oxide thin film, images can be shaped by radiating light into pattern for changing surface of titanium oxide to be ultra hydrophilicity as decomposition of repellent. At that time, contact angle is 150 degree in water, 80 degree in oil, for not radiated aria, and is 0 degree in water and oil for radiated aria. Application for control technology of wettability keeps possibility of broader development to itself, not staying ability of self-cleaning and drip-proof. (NEDO)

  10. RCK-10BG jar type induction-heating rice cooker controlled by a VF inverter; VF inveter seigyo no IH hoongama RCK-10BG

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    The highly reputed induction-heating (IH) type, forged, thick-wall rice cooker is further developed by reducing body size by approximately 30% from that of the conventional one and controlling it with a voltage-feedback (VF) inverter to keep its cooking performance unaffected even when voltage decreases. It has the following major features: forged, thick-wall cooker, based on the proprietary technique of `powerful convection in the forged body,` to reproduce taste of rice cooked by a cooking stove; built-in `VF inverter` to keep an optimum power level even when voltage decreases (the first in the industry); `photocatalytic panel` to decompose stain by light from a fluorescent lamp or the like (the first in the industry); `hollow, inner container of high-density, thermally insulating plastic` to improve heat-sealing effect for saving energy (the first in the industry); and compact body closely in contact with the inner cooker. (translated by NEDO)

  11. Tape transport control and estimation of reel inertia for magnetic tape drives; Jiki tape kudokei ni okeru reel kansei moment suitei to tape soko seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Yanagihara, N.; Terayama, T.; Sakai, K.; Owada, N. [Hitachi, Ltd., Tokyo (Japan)

    1998-04-01

    The moment of inertia of the tape reel of VTR varies depending on the reel size and the volume of the tape winding around the reel. Due to the variation, the tension control of the tape in the reel-to-reel drive is difficult. To overcome this problem, the paper presents a new method to identify the tape reel without using additional sensors. Based on this identification scheme, the tape transport control is also presented to achieve the precise tension/speed control. This real-time identification approaches are presented for spinning and running. When the tape reels start spinning up, the tape speed is changed stepwise, by which the inertia of the reel can be estimated using the variation of the tape tension at each reel. The process is repeated to improve the accuracy of identification. Under running condition, the changing inertia can be calculated from the tape radii of two reels. The changing tape radius can be detectable with the speed of capstan. The validity of the proposed method has been approved by experiments using VTR. 6 refs., 14 figs., 4 tabs.

  12. Regulation of gene expression by carbohydrates. Part 1. Phosphoenolpyruvate carboxykinase gene; Tansui kabutsu ni yoru idenshi hatsugen seigyo ( 1 ). Phosphoenolpyruvate san carboxykinase idenshi ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Oda, H. [Nagoya Univ. (Japan)

    1998-09-01

    Focusing on Phosphoenolpyruvate carboxykinase (PEPCK), recent knowledge on the transcription regulating function by carbohydrates via hormone is introduced. PEPCK exists mainly in the liver, kidney, adipose tissue, and small intestine, and the synthetic rate of PEPCK protein is regulated virtually by the transcription of PEPCK gene. Most part of the change is regulated via insulin and glucagon, and glucagon accelerates transcription while insulin suppresses transcription. Suppression by insulin becomes smaller in transgenic mice having reporter genes which lack RE containing part, but sufficient suppression of PEPCK gene expression by high carbohydrate diet is observed. Fasting and high protein diet increase glucagon concentration in the blood to increase cAMP concentration in cells. High PEPCK gene expression is observed with diabetes, which is the main cause for the increase in the value of blood glucose in diabetes. 20 refs., 2 figs.

  13. Discrete tone noise on two-dimensional wing. Active control for discrete tone; Nijigen seishiyoku kara hasseisuru risan shuhasu soon no kenkyu. Risan shuhasu soon no nodo seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Nakashima, S. [Mitsubishi Electric Corp., Tokyo (Japan); Akishita, S. [Ritsumeikan University, Kyoto (Japan). Faculty of Science and Engineering

    1996-01-25

    The active noise control of discrete tones generated in a uniform jet flow on a two-dimensional wing was investigated. Discrete tone noise is generated by a self-excited feedback loop formed by the acoustic field and the unstable boundary layer. In this work, we conducted an active control experiment using a flap driven by piezoceramic levers, which can vibrate with a phase delayed from the velocity fluctuation signal on the suction side. When the flap motion lags the pressure fluctuation at the trailing edge with a phase angle of 180 degrees, it was found that the discrete tone noise was reduced by a maximum of about 7 dB, the flow fluctuation intensities in the boundary layer on the suction side were reduced by about half, and the correlation area of the flow fluctuation at the trailing edge decreased. This confirms that discrete tone generation is caused by the feedback loop and that the discrete tone generation is actively reduced by trailing edge control. 10 refs., 14 figs.

  14. Charging and discharging time control of electric vehicles for the purpose of load leveling; Fuka heijunka wo mokuteki to suru denki jidosha no juhoden jikan seigyo hosaku

    Energy Technology Data Exchange (ETDEWEB)

    Koyanagi, F.; Uriu, Y. [Seikei University, Tokyo (Japan)

    1998-05-01

    By ZEV regulation of the California government in 1990, not only the United States but also European countries and Japan are largely interested in replacing gasoline car by electric vehicle. Electric utilities expect that the electric vehicle improves the difference between the daytime and nighttime of a recent demand as a new market of electric power demand. There are some reports that indicates on the danger which generates the new peaks as the electric vehicles spread through the market in charging start hour. As the countermeasure for avoiding this problem, the authors propose that 1) inverse load flow by discharging of the contract private use EV is carried out as an energy shift in daytime, 2) the regional charging time shift method is introduced in the midnight charging time zone, in this paper. Therefore, the energy actual consumption of the automobile was investigated, and future demand was predicted by the mathematical consumption modeling. Especially, it is described a strategy of optimum introduction on scheme of effective electric vehicle for energy shift in section 2.2. And authors point out the necessity of market regulation for EV. 14 refs., 10 figs., 1 tab.

  15. Cultivation of spirulina platensis and its growth behavior controlling cultivation medium; Baiyoeki sosei no seigyo ni yoru spirulina platensis no baiyo oyobi sono zoshoku kyodo

    Energy Technology Data Exchange (ETDEWEB)

    Kobayashi, K.; Fujita, K. [Babcock-Hitachi K.K., Tokyo (Japan)

    1996-01-20

    Cultivation of Spirulina platensis while controlling pH and nitrate ion in the culture medium was investigated in order to obtain a high density culture. In the cultivation of Spirulina platensis using sodium bicarbonate as a carbon source, the pH value increased during growth of Spirulina, and then the growth stopped at a pH value of more than 12. The cell concentration reached 2.2g/l by maintaining a pH range of 8.5 to 10.0 using CO2 gas without controlling the nitrate ion concentration. By controlling the pH and adding nitrate to a concentration of 2.0g/l, the cell concentration reached 4.2g/l at 350 hours. It was found that the cell concentration was about four times that of the culture without controlling pH and nitrate. 4 refs., 6 figs.

  16. Optimum orbit and control of reflux ratio in the batch distillation; Bacchi joryu ni okeru kanryuhi no saiteki kido to seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Morimoto, Jun; Susuzki, Mutsumi [Tohoku University, Miyagi (Japan)

    1999-06-05

    In the batch distillation, optimum orbit of reflux ratio exists under evaluation function of utility cost minimum and product quantity maximum. Enormous repeat calculation was necessary in order to calculate such optimum orbit by maximum principle. In this paper, calculation method which corrects initial value of the Hamilton accompanying function is proposed. Optimum orbit is calculated by this calculation method and advance on recent computer in the real time, and there is it, and it would be able to control the reflux ratio. And, it is also possible reflux ratio optimum state variable control table beforehand. These control method become an operation which is truly optimum for evaluation function. (translated by NEDO)

  17. Light beam control by refractive index change in a modified purple membrane; Hen`i shimaku no kussetsuritsu henka wo riyoshita hikari bimu seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Takei, H.; Shimizu, N. [Hitachi Ltd., Tokyo (Japan)

    1996-04-01

    A purple membrane extracted from bacterial halobacterium salinarium is a membrane prepared by two-dimensionally crystallizing bacteriorhodopsin (bR) which is a photo-sensitive protein. When retinal chromophore in the bR absorbs photons, isomerization occurs, so that light cycle of bR comprising a light intermediate of different absorption spectrum occurs. Since this purple membrane has a high stability and a high repetition durability, a study of the application of the same to a rewritable holographic recording medium has been made in recent years. This paper describes an example in which the refractive index variation of a purple membrane the optical characteristics of which varies due to variation is applied to light beam control. The paper introduces a Fabry-Perot resonator as an optical element capable of carrying out light control by utilizing refractive index variation. The paper further describes the possibility of materialization of an optical logic comprising a combination of light-irradiation refractive index variation and a Fabry-Perot resonator and having nonlinear input/output characteristics such as the bistablity owing to the feedback effect in the resonator. 7 refs., 3 figs.

  18. Resistance test of high-speed ship by means of attitude control method. Part 2; Shisei seigyo hoshiki ni yoru kosokutei no teiko shiken. 2

    Energy Technology Data Exchange (ETDEWEB)

    Hayashida, S. [Nagasaki Institute of Applied Science, Nagasaki (Japan)

    1996-04-10

    The previous paper has proposed a resistance test method by controlling the attitude of a high-speed model ship using a personal computer without making a data base. For this method, the fluid force acting on the hull of model ship is measured, to change its attitude based on the measurement, and then, the fluid force is measured again, to change the attitude again. The traveling attitude is created by repeating this, to measure the force acting on the hull. Since the attitude is changed by calculating using the fluid force measured, various factors can be considered in the calculation process. For example, a test with an arbitrary displacement in an arbitrary position of center of gravity can be conducted in spite of actual displacement and position of center of gravity of the model ship. A test for a high-speed ship was conducted through this method, to obtain nearly satisfactory results compared with a usual resistance test. Occasionally, a lot of repetitions were required to satisfy the balancing condition of the force. In this study, the improvement of testing efficiency has been planned by modifying the analyzing program. 5 refs., 7 figs., 1 tab.

  19. System Identification

    NARCIS (Netherlands)

    Keesman, K.J.

    2011-01-01

    Summary System Identification Introduction.- Part I: Data-based Identification.- System Response Methods.- Frequency Response Methods.- Correlation Methods.- Part II: Time-invariant Systems Identification.- Static Systems Identification.- Dynamic Systems Identification.- Part III: Time-varying

  20. Gradient systems and mechanical systems

    Institute of Scientific and Technical Information of China (English)

    Fengxiang Mei; Huibin Wu

    2016-01-01

    All types of gradient systems and their properties are discussed. Two problems connected with gradient sys-tems and mechanical systems are studied. One is the direct problem of transforming a mechanical system into a gradi-ent system, and the other is the inverse problem, which is transforming a gradient system into a mechanical system.

  1. Thermal systems; Systemes thermiques

    Energy Technology Data Exchange (ETDEWEB)

    Lalot, S. [Valenciennes Univ. et du Hainaut Cambresis, LME, 59 (France); Lecoeuche, S. [Ecole des Mines de Douai, Dept. GIP, 59 - Douai (France)]|[Lille Univ. des Sciences et Technologies, 59 - Villeneuve d' Ascq (France); Ahmad, M.; Sallee, H.; Quenard, D. [CSTB, 38 - Saint Martin d' Heres (France); Bontemps, A. [Universite Joseph Fourier, LEGI/GRETh, 38 - Grenoble (France); Gascoin, N.; Gillard, P.; Bernard, S. [Laboratoire d' Energetique, Explosion, Structure, 18 - Bourges (France); Gascoin, N.; Toure, Y. [Laboratoire Vision et Robotique, 18 - Bourges (France); Daniau, E.; Bouchez, M. [MBDA, 18 - Bourges (France); Dobrovicescu, A.; Stanciu, D. [Bucarest Univ. Polytechnique, Faculte de Genie Mecanique (Romania); Stoian, M. [Reims Univ. Champagne Ardenne, Faculte des Sciences, UTAP/LTM, 51 (France); Bruch, A.; Fourmigue, J.F.; Colasson, S. [CEA Grenoble, Lab. Greth, 38 (France); Bontemps, A. [Universite Joseph Fourier, LEGI/GRETh, 38 - Grenoble (France); Voicu, I.; Mare, T.; Miriel, J. [Institut National des Sciences Appliquees (INSA), LGCGM, IUT, 35 - Rennes (France); Galanis, N. [Sherbrooke Univ., Genie Mecanique, QC (Canada); Nemer, M.; Clodic, D. [Ecole des Mines de Paris, Centre Energetique et Procedes, 75 (France); Lasbet, Y.; Auvity, B.; Castelain, C.; Peerhossaini, H. [Nantes Univ., Ecole Polytechnique, Lab. de Thermocinetiquede Nantes, UMR-CNRS 6607, 44 (France)

    2005-07-01

    This session about thermal systems gathers 26 articles dealing with: neural model of a compact heat exchanger; experimental study and numerical simulation of the thermal behaviour of test-cells with walls made of a combination of phase change materials and super-insulating materials; hydraulic and thermal modeling of a supercritical fluid with pyrolysis inside a heated channel: pre-dimensioning of an experimental study; energy analysis of the heat recovery devices of a cryogenic system; numerical simulation of the thermo-hydraulic behaviour of a supercritical CO{sub 2} flow inside a vertical tube; mixed convection inside dual-tube exchangers; development of a nodal approach with homogenization for the simulation of the brazing cycle of a heat exchanger; chaotic exchanger for the cooling of low temperature fuel cells; structural optimization of the internal fins of a cylindrical generator; a new experimental approach for the study of the local boiling inside the channels of exchangers with plates and fins; experimental study of the flow regimes of boiling hydrocarbons on a bundle of staggered tubes; energy study of heat recovery exchangers used in Claude-type refrigerating systems; general model of Carnot engine submitted to various operating constraints; the free pistons Stirling cogeneration system; natural gas supplied cogeneration system with polymer membrane fuel cell; influence of the CRN coating on the heat flux inside the tool during the wood unrolling process; transport and mixture of a passive scalar injected inside the wake of a Ahmed body; control of a laser welding-brazing process by infrared thermography; 2D self-adaptative method for contours detection: application to the images of an aniso-thermal jet; exergy and exergy-economical study of an 'Ericsson' engine-based micro-cogeneration system; simplified air-conditioning of telephone switching equipments; parametric study of the 'low-energy' individual dwelling; brief synthesis of

  2. Data Systems vs. Information Systems

    OpenAIRE

    Amatayakul, Margret K.

    1982-01-01

    This paper examines the current status of “hospital information systems” with respect to the distinction between data systems and information systems. It is proposed that the systems currently existing are incomplete data dystems resulting in ineffective information systems.

  3. Data Systems vs. Information Systems

    OpenAIRE

    Amatayakul, Margret K.

    1982-01-01

    This paper examines the current status of “hospital information systems” with respect to the distinction between data systems and information systems. It is proposed that the systems currently existing are incomplete data dystems resulting in ineffective information systems.

  4. Multibody Systems

    DEFF Research Database (Denmark)

    Wagner, Falko Jens

    1999-01-01

    Multibody Systems is one area, in which methods for solving DAEs are of special interst. This chapter is about multibody systems, why they result in DAE systems and what kind of problems that can arise when dealing with multibody systems and formulating their corresponding DAE system....

  5. Lymph system

    Science.gov (United States)

    Lymphatic system ... neck, under the arms, and groin. The lymph system includes the: Tonsils Adenoids Spleen Thymus ... JE, Flynn JA, Solomon BS, Stewart RW. Lymphatic system. In: Ball JW, Dains JE, Flynn JA, Solomon ...

  6. Systems effectiveness

    CERN Document Server

    Habayeb, A R

    1987-01-01

    Highlights three principal applications of system effectiveness: hardware system evaluation, organizational development and evaluation, and conflict analysis. The text emphasizes the commonality of the system effectiveness discipline. The first part of the work presents a framework for system effectiveness, partitioning and hierarchy of hardware systems. The second part covers the structure, hierarchy, states, functions and activities of organizations. Contains an extended Appendix on mathematical concepts and also several project suggestions.

  7. Bitcoin System

    Directory of Open Access Journals (Sweden)

    Jan Lánský

    2017-06-01

    Full Text Available Cryptocurrency systems are purely digital and decentralized systems that use cryptographic principles to confirm transactions. Bitcoin is the first and also the most widespread cryptocurrency. The aim of this article is to introduce Bitcoin system using a language understandable also to readers without computer science education. This article captures the Bitcoin system from three perspectives: internal structure, network and users. Emphasis is placed on brief and clear definitions (system components and their mutual relationships. A new system view of the stated terms constitutes author’s own contribution.

  8. Intelligent Systems

    Data.gov (United States)

    National Aeronautics and Space Administration — The autonomous systems (AS) project, led by NASA Ames, is developing software for system operation automation. AS technology will help astronauts make more decisions...

  9. Systems Engineering

    Science.gov (United States)

    Pellerano, Fernando

    2015-01-01

    This short course provides information on what systems engineering is and how the systems engineer guides requirements, interfaces with the discipline leads, and resolves technical issues. There are many system-wide issues that either impact or are impacted by the thermal subsystem. This course will introduce these issues and illustrate them with real life examples.

  10. Retrofitting Systems

    DEFF Research Database (Denmark)

    Rose, Jørgen

    1997-01-01

    This report gives an overview of the different retrofitting possibilities that are available today. The report looks at both external and internal systems for external wall constructions, roof constructions, floor constructions and foundations. All systems are described in detail in respect to use...... and methods, and the efficiency of the different systems are discussed....

  11. Operating systems

    CERN Document Server

    Tsichritzis, Dionysios C; Rheinboldt, Werner

    1974-01-01

    Operating Systems deals with the fundamental concepts and principles that govern the behavior of operating systems. Many issues regarding the structure of operating systems, including the problems of managing processes, processors, and memory, are examined. Various aspects of operating systems are also discussed, from input-output and files to security, protection, reliability, design methods, performance evaluation, and implementation methods.Comprised of 10 chapters, this volume begins with an overview of what constitutes an operating system, followed by a discussion on the definition and pr

  12. Cryogenic Systems

    Science.gov (United States)

    Hosoyama, Kenji

    2002-02-01

    In this lecture we discuss the principle of method of cooling to a very low temperature, i.e. cryogenic. The "gas molecular model" will be introduced to explain the mechanism cooling by the expansion engine and the Joule-Thomson expansion valve. These two expansion processes are normally used in helium refrigeration systems to cool the process gas to cryogenic temperature. The reverse Carnot cycle will be discussed in detail as an ideal refrigeration cycle. First the fundamental process of liquefaction and refrigeration cycles will be discussed, and then the practical helium refrigeration system. The process flow of the system and the key components; -compressor, expander, and heat exchanger- will be discussed. As an example of an actual refrigeration system, we will use the cryogenic system for the KEKB superconducting RF cavity. We will also discuss the liquid helium distribution system, which is very important, especially for the cryogenic systems used in accelerator applications. 1 Principles of Cooling and Fundamental Cooling Cycle 2 Expansion engine, Joule-Thomson expansion, kinetic molecular theory, and enthalpy 3 Liquefaction Systems 4 Refrigeration Systems 5 Practical helium liquefier/refrigeration system 6 Cryogenic System for TRISTAN Superconducting RF Cavity

  13. Expert System

    DEFF Research Database (Denmark)

    Hildebrandt, Thomas Troels; Cattani, Gian Luca

    2016-01-01

    An expert system is a computer system for inferring knowledge from a knowledge base, typically by using a set of inference rules. When the concept of expert systems was introduced at Stanford University in the early 1970s, the knowledge base was an unstructured set of facts. Today the knowledge...... base of expert systems is often given in terms of an ontology, extracted and built from various data sources by employing natural language-processing and statistics. To emphasize such capabilities, the term “expert” is now often replaced by “cognitive,” “knowledge,” “knowledge-based,” or “intelligent......” system. With very few exceptions, general-purpose expert systems have failed to emerge so far. However, expert systems are applied in specialized domains, particularly in healthcare. The increasing availability of large quantities of data to organizations today provides a valuable opportunity...

  14. Recommender systems

    CERN Document Server

    Kembellec, Gérald; Saleh, Imad

    2014-01-01

    Acclaimed by various content platforms (books, music, movies) and auction sites online, recommendation systems are key elements of digital strategies. If development was originally intended for the performance of information systems, the issues are now massively moved on logical optimization of the customer relationship, with the main objective to maximize potential sales. On the transdisciplinary approach, engines and recommender systems brings together contributions linking information science and communications, marketing, sociology, mathematics and computing. It deals with the understan

  15. Material Systems

    DEFF Research Database (Denmark)

    Jensen, Mads Brath; Mortensen, Henrik Rubæk; Mullins, Michael;

    2009-01-01

    This paper describes and reflects upon the results of an investigative project which explores the setting up of a material system - a parametric and generative assembly consisting of and taking into consideration material properties, manufacturing constraints and geometric behavior. The project...... approaches the subject through the construction of a logic-driven system aiming to explore the possibilities of a material system that fulfills spatial, structural and performative requirements concurrently and how these are negotiated in situations where they might be conflicting....

  16. Material Systems

    DEFF Research Database (Denmark)

    Jensen, Mads Brath; Mortensen, Henrik Rubæk; Mullins, Michael

    2009-01-01

    This paper describes and reflects upon the results of an investigative project which explores the setting up of a material system - a parametric and generative assembly consisting of and taking into consideration material properties, manufacturing constraints and geometric behavior. The project...... approaches the subject through the construction of a logic-driven system aiming to explore the possibilities of a material system that fulfills spatial, structural and performative requirements concurrently and how these are negotiated in situations where they might be conflicting....

  17. Intelligent systems

    CERN Document Server

    Irwin, J David

    2011-01-01

    Technology has now progressed to the point that intelligent systems are replacing humans in the decision making processes as well as aiding in the solution of very complex problems. In many cases intelligent systems are already outperforming human activities. Artificial neural networks are not only capable of learning how to classify patterns, such images or sequence of events, but they can also effectively model complex nonlinear systems. Their ability to classify sequences of events is probably more popular in industrial applications where there is an inherent need to model nonlinear system

  18. Energetic Systems

    Data.gov (United States)

    Federal Laboratory Consortium — The Energetic Systems Division provides full-spectrum energetic engineering services (project management, design, analysis, production support, in-service support,...

  19. Systemic darwinism.

    Science.gov (United States)

    Winther, Rasmus Grønfeldt

    2008-08-19

    Darwin's 19th century evolutionary theory of descent with modification through natural selection opened up a multidimensional and integrative conceptual space for biology. We explore three dimensions of this space: explanatory pattern, levels of selection, and degree of difference among units of the same type. Each dimension is defined by a respective pair of poles: law and narrative explanation, organismic and hierarchical selection, and variational and essentialist thinking. As a consequence of conceptual debates in the 20th century biological sciences, the poles of each pair came to be seen as mutually exclusive opposites. A significant amount of 21st century research focuses on systems (e.g., genomic, cellular, organismic, and ecological/global). Systemic Darwinism is emerging in this context. It follows a "compositional paradigm" according to which complex systems and their hierarchical networks of parts are the focus of biological investigation. Through the investigation of systems, Systemic Darwinism promises to reintegrate each dimension of Darwin's original logical space. Moreover, this ideally and potentially unified theory of biological ontology coordinates and integrates a plurality of mathematical biological theories (e.g., self-organization/structure, cladistics/history, and evolutionary genetics/function). Integrative Systemic Darwinism requires communal articulation from a plurality of perspectives. Although it is more general than these, it draws on previous advances in Systems Theory, Systems Biology, and Hierarchy Theory. Systemic Darwinism would greatly further bioengineering research and would provide a significantly deeper and more critical understanding of biological reality.

  20. cardiovascular system

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    6.1 Cardiac arrhythmias 2006037 Electroanatomical systems guided circumferential pulmonary veins ablation for atrial fibrillation: initial experience from comparison between the EnSite -NavX and CARTO system LIU Xu(刘旭 ), et al. Dept Cardiol, Shanghai Chest Hosp, Shanghai, 200030, China. Chin J Cardiol 2005; 33 (22): 975 -978.

  1. Linear Systems.

    Science.gov (United States)

    The report documents a series of seminars at Rome Air Development Center with the content equivalent to an intense course in Linear Systems . Material...is slanted toward the practicing engineer and introduces some of the fundamental concepts and techniques for analyzing linear systems . Techniques for

  2. Immune System

    NARCIS (Netherlands)

    Kuper, C.F.; Ruehl-Fehlert, C.; Elmore, S.A.; Parker, G.A.

    2013-01-01

    Cells of the immune system are found in every organ, from the classic lymphoid organs to tissues such as liver, mucosae, and omental adipose tissue. Toxicity to the immune system may be from a direct or indirect injury to lymphoid organs. The morphological responses range from lymphocyte depletion t

  3. Caste System

    OpenAIRE

    Hoff, Karla

    2016-01-01

    In standard economics, individuals are rational actors and economic forces undermine institutions that impose large inefficiencies. The persistence of the caste system is evidence of the need for psychologically more realistic models of decision-making in economics. The caste system divides South Asian society into hereditary groups whose lowest ranks are represented as innately polluted. ...

  4. Creative Systems

    DEFF Research Database (Denmark)

    Manelius, Anne-Mette; Beim, Anne

    2007-01-01

    Opsamling af diskussioner på konferencen og udstillingen Creative Systems i september/oktober 2007. Konferencen og Udstillingen Creative Systems sætter fokus på systemer som en positiv drivkraft i den kreative skabelsesproces. CINARK inviterede fire internationale kapaciteter, som indenfor hver...... deres felt har beskæftiget sig med udviklingen af systemer. Kieran Timberlake, markant amerikansk tegnestue; Mark West, Professor på University of Manitoba, Canada, og pioner indenfor anvendelse af tekstilforskalling til betonstøbninger; Matilda McQuaid, Arkitekturhistoriker og kurator på udstillingen...... om Extreme Textiles på amerikanske Cooper Hewit Design Museum, samt Professor Ludger Hovestadt, ved ETH, Zürich der fokuserer på udvikling og anvendelse af logaritmiske systemtilgange. Udstillingen diskuterede ud fra deres meget forskellige arbejder, det kreative potentiale i anvendelsen af systemer...

  5. Power system

    Science.gov (United States)

    Hickam, Christopher Dale

    2008-03-18

    A power system includes a prime mover, a transmission, and a fluid coupler having a selectively engageable lockup clutch. The fluid coupler may be drivingly connected between the prime mover and the transmission. Additionally, the power system may include a motor/generator drivingly connected to at least one of the prime mover and the transmission. The power-system may also include power-system controls configured to execute a control method. The control method may include selecting one of a plurality of modes of operation of the power system. Additionally, the control method may include controlling the operating state of the lockup clutch dependent upon the mode of operation selected. The control method may also include controlling the operating state of the motor/generator dependent upon the mode of operation selected.

  6. Reactive Systems

    DEFF Research Database (Denmark)

    Aceto, Luca; Ingolfsdottir, Anna; Larsen, Kim Guldstrand

    A reactive system comprises networks of computing components, achieving their goals through interaction among themselves and their environment. Thus even relatively small systems may exhibit unexpectedly complex behaviours. As moreover reactive systems are often used in safety critical systems......, the need for mathematically based formal methodology is increasingly important. There are many books that look at particular methodologies for such systems. This book offers a more balanced introduction for graduate students and describes the various approaches, their strengths and weaknesses, and when...... they are best used. Milner's CCS and its operational semantics are introduced, together with the notions of behavioural equivalences based on bisimulation techniques and with recursive extensions of Hennessy-Milner logic. In the second part of the book, the presented theories are extended to take timing issues...

  7. Dynamical systems

    CERN Document Server

    Sternberg, Shlomo

    2010-01-01

    Celebrated mathematician Shlomo Sternberg, a pioneer in the field of dynamical systems, created this modern one-semester introduction to the subject for his classes at Harvard University. Its wide-ranging treatment covers one-dimensional dynamics, differential equations, random walks, iterated function systems, symbolic dynamics, and Markov chains. Supplementary materials offer a variety of online components, including PowerPoint lecture slides for professors and MATLAB exercises.""Even though there are many dynamical systems books on the market, this book is bound to become a classic. The the

  8. Physical Systems

    CERN Document Server

    Belkind, Ori

    2012-01-01

    Based on the concept of a physical system, this book offers a new philosophical interpretation of classical mechanics and the Special Theory of Relativity. According to Belkind's view the role of physical theory is to describe the motions of the parts of a physical system in relation to the motions of the whole. This approach provides a new perspective into the foundations of physical theory, where motions of parts and wholes of physical systems are taken to be fundamental, prior to spacetime, material properties and laws of motion. He defends this claim with a constructive project, deriving b

  9. Creative systems

    DEFF Research Database (Denmark)

    Beim, Anne

    2007-01-01

    At udvikle systemer har altid været et væsentligt element i den arkitektoniske skabelsesproces. Systemer er ikke nødvendigvis begrænsninger, men kan ses som positive faktorer i skabelses og fremstillinsprocessen. Center for Industriel Arkitektur, Cinark, har afholdt en international konference, en...... workshop og en udstilling under overskriften; Creative Systems. Artiklen præsenterer de fire oplægsholdere Matilda McQuaid, Mark West, Stephen Kieran og Ludger Hovestadt og en række diskussionstemaer....

  10. Recommender Systems

    CERN Document Server

    Lü, Linyuan; Yeung, Chi Ho; Zhang, Yi-Cheng; Zhang, Zi-Ke; Zhou, Tao

    2012-01-01

    The ongoing rapid expansion of the Internet greatly increases the necessity of effective recommender systems for filtering the abundant information. Extensive research for recommender systems is conducted by a broad range of communities including social and computer scientists, physicists, and interdisciplinary researchers. Despite substantial theoretical and practical achievements, unification and comparison of different approaches are lacking, which impedes further advances. In this article, we review recent developments in recommender systems and discuss the major challenges. We compare and evaluate available algorithms and examine their roles in the future developments. In addition to algorithms, physical aspects are described to illustrate macroscopic behavior of recommender systems. Potential impacts and future directions are discussed. We emphasize that recommendation has a great scientific depth and combines diverse research fields which makes it of interests for physicists as well as interdisciplinar...

  11. Avionics Systems

    Directory of Open Access Journals (Sweden)

    P.M. Soundar Rajan

    2013-03-01

    Full Text Available ‘Avionics’ systems, over the decades, have grown from simple communication radios and navigation equipments to complex integrated equipments primarily infiuenced by dominance of digital technology. Continuous growth in integrated circuit technology, functional integration of complete system on chip, very high speed communication channels and fault tolerant communication protocols have brought remarkable advancements in avionics systems. Further Mechanical and Pneumatic functional blocks are being replaced by digital systems progressively and decisively. New generation aircraft are being built around powerful avionics assets to provide stress free cockpit to the pilot.Defence Science Journal, 2013, 63(2, pp.129-130, DOI:http://dx.doi.org/10.14429/dsj.63.4269

  12. AEG System -

    Data.gov (United States)

    Department of Transportation — The AEG System is used to create, revise, approve, and distribute text of the AEGS and Flight Standard Board (FSB)/Type Rating Report. The MMEL specifies under what...

  13. Bubble systems

    CERN Document Server

    Avdeev, Alexander A

    2016-01-01

    This monograph presents a systematic analysis of bubble system mathematics, using the mechanics of two-phase systems in non-equilibrium as the scope of analysis. The author introduces the thermodynamic foundations of bubble systems, ranging from the fundamental starting points to current research challenges. This book addresses a range of topics, including description methods of multi-phase systems, boundary and initial conditions as well as coupling requirements at the phase boundary. Moreover, it presents a detailed study of the basic problems of bubble dynamics in a liquid mass: growth (dynamically and thermally controlled), collapse, bubble pulsations, bubble rise and breakup. Special emphasis is placed on bubble dynamics in turbulent flows. The analysis results are used to write integral equations governing the rate of vapor generation (condensation) in non-equilibrium flows, thus creating a basis for solving a number of practical problems. This book is the first to present a comprehensive theory of boil...

  14. Health systems

    DEFF Research Database (Denmark)

    Büchner, Vera Antonia; Hinz, Vera; Schreyögg, Jonas

    2016-01-01

    This study investigates potential changes in hospital performance after health system entry, while differentiating between hospital technical and cost efficiency and hospital profitability. In the first stage we obtained (bootstrapped) data envelopment analysis (DEA) efficiency scores. Then......, genetic matching is used as a novel matching procedure in this context along with a difference-in-difference approach within a panel regression framework. With the genetic matching procedure, independent and health system hospitals are matched along a number of environmental and organizational...... characteristics. The results show that health system entry increases hospital technical and cost efficiency by between 0.6 and 3.4 % in four alternative post-entry periods, indicating that health system entry has not a transitory but rather a permanent effect on hospital efficiency. Regarding hospital...

  15. Bitcoin System

    National Research Council Canada - National Science Library

    Jan Lánský

    2017-01-01

    .... Bitcoin is the first and also the most widespread cryptocurrency. The aim of this article is to introduce Bitcoin system using a language understandable also to readers without computer science education...

  16. Systems failure.

    OpenAIRE

    Macleod, Anna

    1998-01-01

    Systems Failure A solo exhibition of new work by Anna Macleod developed in conversation with curator Liz Burns. The Dock, Carrick on Shannon, Co Leitrim. Ireland. 12th February – 17th April 2010. The works for the exhibition Systems Failure include drawings, prints and small constructions that examine the delicate balance that exists between need and aspects of failure rooted in the relationship between humanity and land use. The work seeks to question the relationship between scient...

  17. Nanorobotic Systems

    Directory of Open Access Journals (Sweden)

    Lixin Dong

    2008-11-01

    Full Text Available Two strategies towards the realization of nanotechnology have been presented, i.e., top-down and bottom up. The former one is mainly based on nanofabrication and includes technologies such as nano-lithography, nano-imprint, and etching. Presently, they are still 2D fabrication processes with low resolution. The later one is an assembly-based technique. At present, it includes such items as self-assembly, dip-pen lithography, and directed self-assembly. These techniques can generate regular nano patterns in large scales. To fabricate 3D complex nano devices there are still no effective ways by so far. Here we show our effort on the development of a nano laboratory, a prototype nanomanufacturing system, based on nanorobotic manipulations. In which, we take a hybrid strategy as shown in Fig. 1. In this system, nano fabrication and nano assembly can be performed in an arbitrary order to construct nano building blocks and finally nano devices. The most important feature in this system is that the products can be fed back into the system to shrink the system part by part leading to nanorobots. Property characterization can be performed in each intermediate process. Due to the nanorobotic manipulation system, dynamic measurement can be performed rather than conventional static observations.

  18. System-of-Systems Complexity

    Directory of Open Access Journals (Sweden)

    Hermann Kopetz

    2013-11-01

    Full Text Available The global availability of communication services makes it possible to interconnect independently developed systems, called constituent systems, to provide new synergistic services and more efficient economic processes. The characteristics of these new Systems-of-Systems are qualitatively different from the classic monolithic systems. In the first part of this presentation we elaborate on these differences, particularly with respect to the autonomy of the constituent systems, to dependability, continuous evolution, and emergence. In the second part we look at a SoS from the point of view of cognitive complexity. Cognitive complexity is seen as a relation between a model of an SoS and the observer. In order to understand the behavior of a large SoS we have to generate models of adequate simplicity, i.e, of a cognitive complexity that can be handled by the limited capabilities of the human mind. We will discuss the importance of properly specifying and placing the relied-upon message interfaces between the constituent systems that form an open SoS and discuss simplification strategies that help to reduce the cognitive complexity.

  19. Systems Studies

    Energy Technology Data Exchange (ETDEWEB)

    Graham, R.L.

    1998-03-17

    The Systems Studies Activity had two objectives: (1) to investigate nontechnical barriers to the deployment of biomass production and supply systems and (2) to enhance and extend existing systems models of bioenergy supply and use. For the first objective, the Activity focused on existing bioenergy markets. Four projects were undertaken: a comparative analysis of bioenergy in Sweden and Austria; a one-day workshop on nontechnical barriers jointly supported by the Production Systems Activity; the development and testing of a framework for analyzing barriers and drivers to bioenergy markets; and surveys of wood pellet users in Sweden, Austria and the US. For the second objective, two projects were undertaken. First, the Activity worked with the Integrated BioEnergy Systems (TBS) Activity of TEA Bioenergy Task XIII to enhance the BioEnergy Assessment Model (BEAM). This model is documented in the final report of the IBS Activity. The Systems Studies Activity contributed to enhancing the feedstock portion of the model by developing a coherent set of willow, poplar, and switchgrass production modules relevant to both the US and the UK. The Activity also developed a pretreatment module for switchgrass. Second, the Activity sponsored a three-day workshop on modeling bioenergy systems with the objectives of providing an overview of the types of models used to evaluate bioenergy and promoting communication among bioenergy modelers. There were nine guest speakers addressing different types of models used to evaluate different aspects of bioenergy, ranging from technoeconomic models based on the ASPEN software to linear programming models to develop feedstock supply curves for the US. The papers from this workshop have been submitted to Biomass and Bioenergy and are under editorial review.

  20. Systemic trauma.

    Science.gov (United States)

    Goldsmith, Rachel E; Martin, Christina Gamache; Smith, Carly Parnitzke

    2014-01-01

    Substantial theoretical, empirical, and clinical work examines trauma as it relates to individual victims and perpetrators. As trauma professionals, it is necessary to acknowledge facets of institutions, cultures, and communities that contribute to trauma and subsequent outcomes. Systemic trauma-contextual features of environments and institutions that give rise to trauma, maintain it, and impact posttraumatic responses-provides a framework for considering the full range of traumatic phenomena. The current issue of the Journal of Trauma & Dissociation is composed of articles that incorporate systemic approaches to trauma. This perspective extends conceptualizations of trauma to consider the influence of environments such as schools and universities, churches and other religious institutions, the military, workplace settings, hospitals, jails, and prisons; agencies and systems such as police, foster care, immigration, federal assistance, disaster management, and the media; conflicts involving war, torture, terrorism, and refugees; dynamics of racism, sexism, discrimination, bullying, and homophobia; and issues pertaining to conceptualizations, measurement, methodology, teaching, and intervention. Although it may be challenging to expand psychological and psychiatric paradigms of trauma, a systemic trauma perspective is necessary on both scientific and ethical grounds. Furthermore, a systemic trauma perspective reflects current approaches in the fields of global health, nursing, social work, and human rights. Empirical investigations and intervention science informed by this paradigm have the potential to advance scientific inquiry, lower the incidence of a broader range of traumatic experiences, and help to alleviate personal and societal suffering.

  1. Turbine system

    Energy Technology Data Exchange (ETDEWEB)

    McMahan, Kevin Weston; Dillard, Daniel Jackson

    2016-05-03

    A turbine system is disclosed. The turbine system includes a transition duct having an inlet, an outlet, and a passage extending between the inlet and the outlet and defining a longitudinal axis, a radial axis, and a tangential axis. The outlet of the transition duct is offset from the inlet along the longitudinal axis and the tangential axis. The turbine system further includes a turbine section connected to the transition duct. The turbine section includes a plurality of shroud blocks at least partially defining a hot gas path, a plurality of buckets at least partially disposed in the hot gas path, and a plurality of nozzles at least partially disposed in the hot gas path. At least one of a shroud block, a bucket, or a nozzle includes means for withstanding high temperatures.

  2. System Description:

    DEFF Research Database (Denmark)

    Schürmann, Carsten; Poswolsky, Adam

    2009-01-01

    Delphin is a functional programming language [Adam Poswolsky and Carsten Schürmann. Practical programming with higher-order encodings and dependent types. In European Symposium on Programming (ESOP), 2008] utilizing dependent higher-order datatypes. Delphin's two-level type-system cleanly separates...... data from computation, allowing for decidable type checking. The data level is LF [Robert Harper, Furio Honsell, and Gordon Plotkin. A framework for defining logics. Journal of the Association for Computing Machinery, 40(1):143-184, January 1993], which allows for the specification of deductive systems...

  3. Lubrication system

    Energy Technology Data Exchange (ETDEWEB)

    Wadding, C.; Lagasse, N.L.; Milo, G.T.; Vankamerik, J.G.

    1986-02-11

    This patent describes a lubrication system for controlling the flow of lubricant as a function of the altitude at which a gas turbine engine is operating. This lubrication system is comprised of: 1.) A source of lubricant under pressure; 2.) A unit requiring lubrication; 3.) A movable valve in fluid communication with the source and with the unit for regulating the flow of lubricant from the source to the unit; and 4.) An altitude sensor associated with the movable valve for positioning the movable valve to control the flow of lubricant from the source to the unit, as a function of the altitude at which the engine is operating.

  4. Microbiology System

    Science.gov (United States)

    1992-01-01

    Technology originating in a NASA-sponsored study of the measurement of microbial growth in zero gravity led to the development of Biomerieux Vitek, Inc.'s VITEK system. VITEK provides a physician with accurate diagnostic information and identifies the most effective medication. Test cards are employed to identify organisms and determine susceptibility to antibiotics. A photo-optical scanner scans the card and monitors changes in the growth of cells contained within the card. There are two configurations - VITEK and VITEK JR as well as VIDAS, a companion system that detects bacteria, viruses, etc. from patient specimens. The company was originally created by McDonnell Douglas, the NASA contractor.

  5. [Systemic scleroderma].

    Science.gov (United States)

    Hunzelmann, N

    2013-04-01

    Systemic scleroderma is a chronic autoimmune disease affecting the skin, internal organs and the musculoskeletal system. The presence of Raynaud phenomenon, anti-nuclear antibodies and pathologic capillaroscopy are early signs of the disease. Limited cutaneous SSc, diffuse cutaneous SSc and SSc-overlap syndromes are the main clinical subtypes. Multidisciplinary care is mandatory. Follow-up examinations should be performed at least annually in order to recognize in a timely fashion treatable organ involvement such as pulmonary arterial hypertension. Besides symptomatic treatment of organ involvement, immunosuppressive therapy is indicated for a progressive inflammatory course.

  6. Computer systems

    Science.gov (United States)

    Olsen, Lola

    1992-01-01

    In addition to the discussions, Ocean Climate Data Workshop hosts gave participants an opportunity to hear about, see, and test for themselves some of the latest computer tools now available for those studying climate change and the oceans. Six speakers described computer systems and their functions. The introductory talks were followed by demonstrations to small groups of participants and some opportunities for participants to get hands-on experience. After this familiarization period, attendees were invited to return during the course of the Workshop and have one-on-one discussions and further hands-on experience with these systems. Brief summaries or abstracts of introductory presentations are addressed.

  7. Irrigation System

    Science.gov (United States)

    1984-01-01

    Under contract with Marshall Space Flight Center, Midwest Research Institute compiled a Lubrication Handbook intended as a reference source for designers and manufacturers of aerospace hardware and crews responsible for maintenance of such equipment. Engineers of Lindsay Manufacturing Company learned of this handbook through NASA Tech Briefs and used it for supplemental information in redesigning gear boxes for their center pivot agricultural irrigation system.

  8. Immune System

    Science.gov (United States)

    ... and mature there to become B cells or leave for the thymus gland, where they mature to become T cells. B lymphocytes and T lymphocytes have separate jobs to do: B lymphocytes are like the body's military intelligence system, seeking out their targets and sending defenses to ...

  9. Bricks / Systems

    DEFF Research Database (Denmark)

    and systems. The basis for this theme is the work conducted at the Utzon(x) Research Group at Aalborg University, in combination with the rich tradition and implementation of masonry work in Denmark, which has attracted increasing attention from architectural practitioners and researchers alike. How should...

  10. Multiagent systems

    National Research Council Canada - National Science Library

    Sycara, Katia P

    1998-01-01

    ... of such multiagent systems (MASs) are a core set of issues and research questions that have been studied over the years by the distributed AT community. In this article, I present some of the critical notions in MASs and the research work that has addressed them. I organize these notions around the concept of problem-solving coherence,...

  11. System Dynamics

    Science.gov (United States)

    Morecroft, John

    System dynamics is an approach for thinking about and simulating situations and organisations of all kinds and sizes by visualising how the elements fit together, interact and change over time. This chapter, written by John Morecroft, describes modern system dynamics which retains the fundamentals developed in the 1950s by Jay W. Forrester of the MIT Sloan School of Management. It looks at feedback loops and time delays that affect system behaviour in a non-linear way, and illustrates how dynamic behaviour depends upon feedback loop structures. It also recognises improvements as part of the ongoing process of managing a situation in order to achieve goals. Significantly it recognises the importance of context, and practitioner skills. Feedback systems thinking views problems and solutions as being intertwined. The main concepts and tools: feedback structure and behaviour, causal loop diagrams, dynamics, are practically illustrated in a wide variety of contexts from a hot water shower through to a symphony orchestra and the practical application of the approach is described through several real examples of its use for strategic planning and evaluation.

  12. Systems chemistry

    NARCIS (Netherlands)

    Ludlow, R. Frederick; Otto, Sijbren

    2008-01-01

    The study of complex mixtures of interacting synthetic molecules has historically not received much attention from chemists, even though research into complexity is well established in the neighbouring fields. However, with the huge recent interest in systems biology and the availability of modern a

  13. Transport system

    NARCIS (Netherlands)

    Drenth, K.F.

    1999-01-01

    The transport system comprises at least one road surface (2) and at least one vehicle (4) on wheels (6). The road surface (2) has a substantially bowl-shaped cross section and the vehicle (4) is designed so that the wheels (6) run directly on the road surface (2) while the road surface (2) acts as a

  14. Solar system

    CERN Document Server

    Homer, Charlene

    2007-01-01

    Thrill young astronomers with a journey through our Solar System. Find out all about the Inner and Outer Planets, the Moon, Stars, Constellations, Asteroids, Meteors and Comets. Using simplified language and vocabulary, concepts such as planetary orbits, the asteroid belt, the lunar cycle and phases of the moon, and shooting stars are all explored.

  15. Quorum Systems

    DEFF Research Database (Denmark)

    Förster, Klaus-Tycho

    2017-01-01

    What happens if a single server is no longer powerful enough to service all your customers? The obvious choice is to add more servers and to use the majority approach (e.g. Paxos, Chapter 2) to guarantee consistency. However, even if you buy one million servers, a client still has to access more ...... study the theory behind overlapping sets, known as quorum systems....

  16. Immune System

    Science.gov (United States)

    A properly functioning immune system is essential to good health. It defends the body against infectious agents and in some cases tumor cells. Individuals with immune deficiencies resulting from genetic defects, diseases (e.g., AIDS, leukemia), or drug therapies are more suscepti...

  17. Systems Chronotherapeutics

    Science.gov (United States)

    Innominato, Pasquale F.; Dallmann, Robert; Rand, David A.; Lévi, Francis A.

    2017-01-01

    Chronotherapeutics aim at treating illnesses according to the endogenous biologic rhythms, which moderate xenobiotic metabolism and cellular drug response. The molecular clocks present in individual cells involve approximately fifteen clock genes interconnected in regulatory feedback loops. They are coordinated by the suprachiasmatic nuclei, a hypothalamic pacemaker, which also adjusts the circadian rhythms to environmental cycles. As a result, many mechanisms of diseases and drug effects are controlled by the circadian timing system. Thus, the tolerability of nearly 500 medications varies by up to fivefold according to circadian scheduling, both in experimental models and/or patients. Moreover, treatment itself disrupted, maintained, or improved the circadian timing system as a function of drug timing. Improved patient outcomes on circadian-based treatments (chronotherapy) have been demonstrated in randomized clinical trials, especially for cancer and inflammatory diseases. However, recent technological advances have highlighted large interpatient differences in circadian functions resulting in significant variability in chronotherapy response. Such findings advocate for the advancement of personalized chronotherapeutics through interdisciplinary systems approaches. Thus, the combination of mathematical, statistical, technological, experimental, and clinical expertise is now shaping the development of dedicated devices and diagnostic and delivery algorithms enabling treatment individualization. In particular, multiscale systems chronopharmacology approaches currently combine mathematical modeling based on cellular and whole-body physiology to preclinical and clinical investigations toward the design of patient-tailored chronotherapies. We review recent systems research works aiming to the individualization of disease treatment, with emphasis on both cancer management and circadian timing system–resetting strategies for improving chronic disease control and

  18. Exploring Enterprise, System of Systems, and System and Software Architectures

    Science.gov (United States)

    2016-06-13

    2009 Carnegie Mellon University Exploring Enterprise, System of Systems, and System and Software Architectures Software Engineering Institute...TITLE AND SUBTITLE Exploring Enterprise, System of Systems, and System and Software Architectures 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c...Carnegie Mellon University, Software Engineering Institute,Pittsburgh,PA,15213 8. PERFORMING ORGANIZATION REPORT NUMBER 9. SPONSORING/MONITORING AGENCY

  19. Systemic Architecture

    DEFF Research Database (Denmark)

    Poletto, Marco; Pasquero, Claudia

    2012-01-01

    design protocols developed to describe the city as a territory of self-organization. Collecting together nearly a decade of design experiments by the authors and their practice, ecoLogicStudio, the book discusses key disciplinary definitions such as ecologic urbanism, algorithmic architecture, bottom......This is a manual investigating the subject of urban ecology and systemic development from the perspective of architectural design. It sets out to explore two main goals: to discuss the contemporary relevance of a systemic practice to architectural design, and to share a toolbox of informational......-up or tactical design, behavioural space and the boundary of the natural and the artificial realms within the city and architecture. A new kind of "real-time world-city" is illustrated in the form of an operational design manual for the assemblage of proto-architectures, the incubation of proto...

  20. Decentralized Systems.

    Science.gov (United States)

    1980-12-31

    source of interrupts can be generated at each element. These interrupts can be used to sample local state information I or to maintain a measure of...adjoining identifiers or system words. 2.7.2 Synonymous Symbols For convience some operators have a number of different representations They are...of this perfor- Sr tance measure for the programs sampled . The programs executed included the Sieve of Eratosthenes described in section 2.1, a

  1. Imaging System

    Science.gov (United States)

    1995-01-01

    The 1100C Virtual Window is based on technology developed under NASA Small Business Innovation (SBIR) contracts to Ames Research Center. For example, under one contract Dimension Technologies, Inc. developed a large autostereoscopic display for scientific visualization applications. The Virtual Window employs an innovative illumination system to deliver the depth and color of true 3D imaging. Its applications include surgery and Magnetic Resonance Imaging scans, viewing for teleoperated robots, training, and in aviation cockpit displays.

  2. Blackboard Systems.

    Science.gov (United States)

    1986-06-01

    article stated that although the importance of context, syntax, semantics, and phonological rules in the recognition of speech was accepted, no system had...of, from the lowest to the highest level: parametric, segmental, phonetic , phonemic, syllabic, lexical, phrasal, and conceptual levels (see Figure 3...from classification (classifying acoustic segments into phonetic classes), to recognition (recognizing words) to generation and 42SCe (25] for a

  3. Systemic Assurance

    Science.gov (United States)

    2015-07-31

    simulations, cyber-physical robotic systems, and extremely large commercial Java programs. An important goal is to develop incrementally compostable...randomness and stochastic behavior, both as integral to algorithm design and as a consequence of multi- threading , (3) Concurrency and distribution, as the...should be involved in all four threads of the effort: Baseline Analysis of Codified Best Practices The baselining analysis for existing practices has

  4. Security system

    Science.gov (United States)

    Baumann, Mark J.; Kuca, Michal; Aragon, Mona L.

    2016-02-02

    A security system includes a structure having a structural surface. The structure is sized to contain an asset therein and configured to provide a forceful breaching delay. The structure has an opening formed therein to permit predetermined access to the asset contained within the structure. The structure includes intrusion detection features within or associated with the structure that are activated in response to at least a partial breach of the structure.

  5. Gasification system

    Science.gov (United States)

    Haldipur, Gaurang B.; Anderson, Richard G.; Cherish, Peter

    1983-01-01

    A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

  6. Propulsion Systems

    Science.gov (United States)

    2011-03-31

    definition we are choosing x to be aligned with the direction of flight. Thus, accounting for the possible rotation of the axes, the acceleration in...Monopropellants. In a monopropellant system, like the name suggests, there is one propellant which decomposes exothermically as it passes through a catalytic...it comes into contact with the catalyst bed. Subsequently, the ammonia decomposes into nitrogen and hydrogen in an endothermic reaction lowering the

  7. Law system and legislation system

    OpenAIRE

    Boshno, Svetlana

    2013-01-01

    This paper is a continuation of publication of the «Jurisprudence» textbook by Svetlana Vladimirovna Boshno. Law system is a key element of general theory of law. The major fundamentals of its construction are subject matter and method of legal regulation. Of great importance is the division of legal regulation methods into mandative and dispositive ones. The paper articulates the concepts of institute and branch of law demonstrated through various examples. An important classification of bra...

  8. Linear systems

    CERN Document Server

    Bourlès, Henri

    2013-01-01

    Linear systems have all the necessary elements (modeling, identification, analysis and control), from an educational point of view, to help us understand the discipline of automation and apply it efficiently. This book is progressive and organized in such a way that different levels of readership are possible. It is addressed both to beginners and those with a good understanding of automation wishing to enhance their knowledge on the subject. The theory is rigorously developed and illustrated by numerous examples which can be reproduced with the help of appropriate computation software. 60 exe

  9. Dynamical systems

    CERN Document Server

    Birkhoff, George D

    1927-01-01

    His research in dynamics constitutes the middle period of Birkhoff's scientific career, that of maturity and greatest power. -Yearbook of the American Philosophical Society The author's great book€¦is well known to all, and the diverse active modern developments in mathematics which have been inspired by this volume bear the most eloquent testimony to its quality and influence. -Zentralblatt MATH In 1927, G. D. Birkhoff wrote a remarkable treatise on the theory of dynamical systems that would inspire many later mathematicians to do great work. To a large extent, Birkhoff was writing about his o

  10. Nuclear systems

    CERN Document Server

    Todreas, Neil E

    2011-01-01

    Principal Characteristics of Power ReactorsIntroductionPower CyclesPrimary Coolant SystemsReactor CoresFuel AssembliesAdvanced Water- and Gas-Cooled Reactors (Generation III And III+)Advanced Thermal and Fast Neutron Spectrum Reactors (Generation IV)ReferencesProblemsThermal Design Principles and ApplicationIntroductionOverall Plant Characteristics Influenced by Thermal Hydraulic ConsiderationsEnergy Production and Transfer ParametersThermal Design LimitsThermal Design MarginFigures of Merit for Core Thermal PerformanceThe Inverted Fuel ArrayThe Equivalent Annulus ApproximationReferencesProble

  11. Expert Systems: What Is an Expert System?

    Science.gov (United States)

    Duval, Beverly K.; Main, Linda

    1994-01-01

    Describes expert systems and discusses their use in libraries. Highlights include parts of an expert system; expert system shells; an example of how to build an expert system; a bibliography of 34 sources of information on expert systems in libraries; and a list of 10 expert system shells used in libraries. (Contains five references.) (LRW)

  12. Expert Systems: What Is an Expert System?

    Science.gov (United States)

    Duval, Beverly K.; Main, Linda

    1994-01-01

    Describes expert systems and discusses their use in libraries. Highlights include parts of an expert system; expert system shells; an example of how to build an expert system; a bibliography of 34 sources of information on expert systems in libraries; and a list of 10 expert system shells used in libraries. (Contains five references.) (LRW)

  13. Systemic Planning

    DEFF Research Database (Denmark)

    Leleur, Steen

    This book presents principles and methodology for planning in a complex world. It sets out a so-called systemic approach to planning, among other things, by applying “hard” and “soft” methodologies and methods in combination. The book is written for Ph.D and graduate students in engineering......, business and other fields, and it is useful for all professionals, across a wide range of employment areas, who share an interest in renewing planning practice. Such an endeavour is seen as both important and timely, recognising that many complex planning tasks necessitate organisations – be they public...... or private – to engage in planning to prepare proactive decision-making....

  14. Model Systems

    Directory of Open Access Journals (Sweden)

    Francisco Rodríguez-Trelles

    1998-12-01

    Full Text Available Current efforts to study the biological effects of global change have focused on ecological responses, particularly shifts in species ranges. Mostly ignored are microevolutionary changes. Genetic changes may be at least as important as ecological ones in determining species' responses. In addition, such changes may be a sensitive indicator of global changes that will provide different information than that provided by range shifts. We discuss potential candidate systems to use in such monitoring programs. Studies of Drosophila subobscura suggest that its chromosomal inversion polymorphisms are responding to global warming. Drosophila inversion polymorphisms can be useful indicators of the effects of climate change on populations and ecosystems. Other species also hold the potential to become important indicators of global change. Such studies might significantly influence ecosystem conservation policies and research priorities.

  15. Cognitive Systems

    DEFF Research Database (Denmark)

    and its relation and potential over current artificial intelligence architectures. Machine learning models that learn from data and previous knowledge will play an increasingly important role in all levels of cognition as large real world digital environments (such as the Internet) usually are too complex...... to be modeled within a limited set of predefined specifications. There will inevitably be a need for robust decisions and behaviors in novel situations that include handling of conflicts and ambiguities based on the capability and knowledge of the artificial cognitive system. Further, there is a need......, cognitive psychology, and semantics. However, machine learning for signal processing plays a key role at all the levels of the cognitive processes, and we expect this to be a new emerging trend in our community in the coming years. Current examples of the use of machine learning for signal processing...

  16. Systemic Planning

    DEFF Research Database (Denmark)

    Leleur, Steen

    This book presents principles and methodology for planning in a complex world. It sets out a so-called systemic approach to planning, among other things, by applying “hard” and “soft” methodologies and methods in combination. The book is written for Ph.D and graduate students in engineering......, business and other fields, and it is useful for all professionals, across a wide range of employment areas, who share an interest in renewing planning practice. Such an endeavour is seen as both important and timely, recognising that many complex planning tasks necessitate organisations – be they public...... or private – to engage in planning to prepare proactive decision-making....

  17. Turbocompound system

    Energy Technology Data Exchange (ETDEWEB)

    Fox, L.D.

    1986-05-06

    A turbocompound system is described for improving the performance of an internal combustion engine without substantially increasing an end viewed profile of the engine to which it is mounted in use. The system consists of: (a) an exhaust driven turbocharger means having an exhaust manifold means extending in an axial direction for collecting exhaust gases from engine cylinders and delivering the gases to an outlet end thereof, exhaust turbine means for extracting energy from the exhaust gases, the exhaust turbine means being provided with an inlet connected to the outlet end of the manifold and an outlet for discharging the exhaust gases, compressor means coupled to the exhaust turbine means for providing a supply of charge air under pressure to an air outlet thereof for delivery to air intake means of an internal combustion engine in use; (b) a power turbine means for extracting additional energy from the exhaust gases, the power turbine means having an intake connected to the outlet of the exhaust turbine means, and mounting means on a side of the power turbine means facing in a direction parallel to the axial direction of the exhaust manifold means that is constructed for being mounted, in use, on an end of an engine adjacent one end of a crankshaft of the engine; and (c) coupling means connected to the power turbine means for transferring mechanical energy produced by the power turbine means, the coupling means extending from the power turbine means to a power take-off end in a direction parallel to the axial length of the exhaust manifold means by an amount that is sufficient for enabling the power take-off end to be connected, in use, to an opposite end of the engine crankshaft from the one end thereof in a manner for transferring the mechanical energy produced by the power turbine means adjacent the one end of the crankshaft to the opposite end of the crankshaft without having to pass therethrough.

  18. Technologies adopted in the lean-burn GA15DE engine for improving combustion and controlling the air-fuel ratio; Kogata 4 kito lean burn engine (GA15DE) ni okeru nensho kaizen oyobi seigyo gijutsu ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Saito, K.; Matsumura, M. [Nissan Motor Co. Ltd., Tokyo (Japan)

    1994-10-07

    This paper summarizes an automotive engine with improved fuel consumption, having realized lean combustion. The lean-burn engine is such an engine that can be operated in an air-fuel ratio compatible in the combustion stability limit and the NOx emission limit by means of combustion improvement, and achieved improvement in fuel consumption as the result. The engine can be expected of higher fuel consumption improving effect than the EGR of the conventional engines because of the lean-burn mechanism. The newly developed lean-burn engine is characterized by less change in its specifications from the basic specifications. Lean fuel burning requires creating a gas mixture condition that is easy to ignite and acquiring a gas flowing field which spreads quickly upon ignition. To achieve these goals, swirl control valves and phase difference cams were disposed. Further, long-discharge coils are used to improve the ignitability. In order to operate the tertiary catalyst more effectively, an A/F sensor that operates in the catalytic area was adopted for the air-fuel ratio feedback control in place of an O2 sensor. The mileage of a vehicle equipped with the lean-burn engine was increased by 17.8% to 20.5 km/l. 2 refs., 13 figs., 2 tabs.

  19. FY1995 study on high speed manipulation of photons and electrons by nanostructures for photonic devices of next generation; 1995 nendo handotai nano kozo ni yoru chokosoku hikari denshi seigyo to jisedai hikari device no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    In this project, we manipulate interaction between photons and electrons in semiconductor nanostructures to study fundamental understanding of electron-photon interaction in ultra-small space and Ultrafast time domain. In addition, on the basis of these results, we explore the optoelectronics nanostructure devices of the next generation. In this research project, we developed new techniques for fabricating quantum dot structures. First, quantum dots of 10nm were grown in two-dimensional V-grooved structures which were formed on SiO{sub 2} patterned substrates by MOCVD. In the same V-grooves, vertical quantum wires were also formed. As the second new technique, we developed self-assembling growth technique for the quantum dots utilizing Spinodal phase separation. In order to investigate the quantum dots using nano-scale characterization technique, we developed low-temperature scanning near-filed optical microscope. Luminescence from as single quantum dot and a single quantum wire were obtained. In addition, luminescence from a single quantum dot through tunneling current excitation by STM was also successfully obtained. Furthermore, micro-photoluminescence measurement achieved time and spatially resolved photoluminescence from a single quantum dot. This micro-photoluminescence also revealed electron dynamics in mesoscopic structures and point contact structures through carrier drag effect. Finally we have succeeded in fabricating vertical microcavity quantum dot lasers by MOCVD and obtained picosecond pulses form the devices. (NEDO)

  20. Control of surface wettability by light illumination: surface wettability control utilizing photo-induced surface reaction of titanium oxide; Hikari de nure wo seigyosuru - sanka chitan no hikari reiki hanno wo riyoshtia nure seigyo gijutsu

    Energy Technology Data Exchange (ETDEWEB)

    Watanabe, T.; Hashimoto, K. [The Universityof Tokyo (Japan)

    1999-02-15

    We report photo-generation of highly hydrophilic surface of titanium dioxide. The photo-induced hydrophilicizing is achieved by photo-generation of Ti{sup 4+} to Ti{sup 3+} at definite sites on the surface, resulting in preferential adsorption of hydroxyl groups on corresponding oxygen vacant sites. We also report the photo-generation of titanium dioxide amphiphilic surface on definite photo illumination condition. The unique character of this surface is ascribed to the microstructure of hydrophilic and oreophilic domain. The hydrophilic or amphiphilic titanium dioxide coating can be applied for antifogging mirror or glass and also self-cleaning paint for various industrial materials. Several commercial applications including antifogging automobile side-view mirror or self-cleaning exterior ceramic tile has been starting to hit the market. (author)

  1. Drag reduction of high altitude airships by active boundary layer control. Effect of a cusp on the reduction; Nodo kyokaiso seigyo ni yoru koso hikosen no teiko teigen. Cusp ni yoru teigen koka

    Energy Technology Data Exchange (ETDEWEB)

    Yamamura, N. [Nissan Motor Co. Ltd., Tokyo (Japan); Matsuuchi, K.; Yamazaki, S.; Sasaki, A. [University of Tsukuba, Tsukuba (Japan); Onda, M. [Mechanical Engineering Lab., Tokyo (Japan)

    1998-02-25

    The aerodynamic character of station-keeping airships at high Reynolds numbers is examined. The boundary layer developing on the surface is sucked by an axial flow fan through a slot located at the rear part of the airship and the sucked gas is blown out as a jet. To know the effect of the cusp two models with and without a cusp attached to the inlet of the suction slot were used. The flow field near the inlet, in particular the pressure on the surface, was measured as the suction discharge was varied. We obtained the form drag by integrating the pressure distribution in a wide range of Reynolds number and of suction discharge. Taking into account the jet thrust and the calculated friction drag, we finally determined the total drag and evaluated the role of the cusp. It was found that the cusp plays an efficient role in reducing the drag. 7 refs., 12 figs.

  2. Stabilizing control of continuous DTB crystallizer. Influence of undissolved fine crystals in external heater; DTB gata renzoku shosekiki no anteika seigyo. Gaibu kanetsuki ni okeru bisho kessho tokenokori no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Naito, Kiyoshi; Sotowa, Ken' ichi; Kano, Manabu; Hasebe, Shinji; Hashimoto, Iori [Kyoto University, Kyoto (Japan). Dept. of Chemical Engineering

    1999-01-10

    In the study of modeling and control of continuous DTB crystallizers, it has been common practice to assume complete dissolution of fine crystals in an external heater (fines dissolver). However, complete dissolution of fine crystals is not always guaranteed because the dissolution rate is finite. In this work, a model of an external heater is developed by taking account of the finite dissolution rate of the crystals. The model is used to study the influence of incomplete dissolution of fine crystals on the stabilizing control of the crystal size distribution (CSD). It is found to be difficult to suppress the sustained oscillation of CSD by using the conventional SISO controllers, which regulate the amount of fines crystals by manipulating the fines flow rate. This is because when the fines flow rate is very large, an increase in the fines flow rate can reduce the amount of crystal dissolution in the external heater. It is demonstrated that instability can be avoided by imposing an upper limit on the fines flow rate. Furthermore, it is shown that the upper limit can be predicted by using the results of open-loop simulation. (author)

  3. Study on the application of digital signal processor (DSP) to adaptive control. 2. Active noise control to noise from a duct; DSP ni yoru tekio seigyo. 2. Duct kaikotan no soon eno active noise control

    Energy Technology Data Exchange (ETDEWEB)

    Kino, N.; Kitagawa, T.; Aoki, K. [Shizuoka Industrial Research Institute of Shizuoka prefecture, Shizuoka (Japan)

    1995-09-01

    Recent developments in signal processing technology, computer and LSI technology, especially DSP technology have made it possible to process sampled and quantized sound signals in real time. So sound field processing technology and sound field control technology have been made rapid progress. Active noise control technology is one of the sound field control technologies. And it can be applied to low frequency noise reduction problems that we couldn`t cope with in usual way. So we developed an experimental device of active noise control. We report how we developed this device and refer to the experimental results about a random frequency noise in this report. 5 refs., 18 figs., 1 tab.

  4. FY1995 development of a clean CVD process by evaluation and control of gas phase nucleation phenomena; 1995 nendo kisokaku seisei gensho no hyoka to seigyo ni yoru clean CVD process no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    The purpose of this study is to develop a high-rate and clean chemical vapor deposition (CVD) process as a breakthrough technique to overcome the problems that particles generated in the gas phase during CVD process for preparation of functional thin films cause reduced product yield and deterioration of the films. In the CVD process proposed here, reactant gas and generated particles are electrically charged to control the motion of them with an electric field. In this study, gas-phase nucleation phenomena are evaluated both theoretically and experimentally. A high-rate, ionized CVD method is first developed, in which reactant gas and generated particles are charged with negative ions generated from a radioisotope source and the UV/photoelectron method, and the motion of the charged gas and particles is controlled with an electric field. Charging and transport processes of fine particles are then investigated experimentally and theoretically to develop a clean CVD method in which generated particles are removed with the electric forces. As a result, quantitative evaluation of the charging and transport process was made possible. We also developed devices for measuring the size distribution and concentration of fine particles in low pressure gas such as those found in plasma CVD processes. In addition, numerical simulation and experiments in this study for a TEOS/O{sub 3} CVD process to prepare thin films could determine reaction rates which have not been known so far and give information on selecting good operation conditions for the process. (NEDO)

  5. Achievement report for fiscal 1998. Research and development of super-functional environment-resistant materials by controlling trace metal ion implantation; 1998 nendo seika hokokusho. Gokubiryo kinzoku ion chunyu seigyo ni yoru chokino taikankyo zairyo no kenkyu kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    The aim was to develop reliable materials high in resistance to hostile environments, greatly improved in their resistance to oxidation, abrasion, and corrosion at high temperatures. To achieve the goal, trace quantities of high melting point metals were implanted into the compound formed on the substrate surface or deep into the substrate material. This year's research and development is outlined below. Important technologies in the ion process involved materials which at high temperatures were very resistant to oxidation, abrasion, and corrosion. The high-temperature oxidation resistant material was studied for use with the automobile supercharger rotor. The study on the high-temperature abrasion resistant material involved Ti-N thin coatings: the optimization of coating conditions, slidability at room temperature, and slidability in a high-temperature atmosphere. As for the high-temperature corrosion resistant material, studies were made to use it for refuse-fueled power generation. The TiAl material was also studied: the effect of ion implantation on the improvement of its high-temperature oxidation resisting capability, analysis into oxidized alloy surface properties, ion implantation into complicatedly shaped items and the optimum material for them, and the surface treatment by ion beams for improving resistance to high-temperature corrosion. (NEDO)

  6. Development of new technologies for high quality thin film and its application to energy engineering; Hikari seigyo to sokudo senbetsu ni yoru chokinshitsu usumaku no seisaku to energy bun`ya eno tekiyo

    Energy Technology Data Exchange (ETDEWEB)

    Hijikata, K.; Inoue, T.; Nagasaki, T.; Suzuki, Y.; Sato, I. [Tokyo Institute of Technology, Tokyo (Japan); Nakabeppu, O. [The University of Tokyo, Tokyo (Japan). Faculty of Engineering

    1997-02-01

    This paper describes laser irradiation and velocity selective deposition experiments for fabricating high quality thin films. For the formation of Ag thin film by vacuum deposition method, YAG laser was irradiated to atoms or clusters parallel or perpendicular to the NaCl single crystal substrate, to deposit them on the substrate. For another experiment, Ag atoms selected in the given velocity were deposited on the (001) NaCl substrate by passing the molecular beam through the velocity selector. When laser was not irradiated, the thin film showed a random structure. Epitaxial growth was accelerated by the laser irradiation. When the selective velocity was set in 353 m/s at the constant intensity of molecular beam, the diffraction pattern of the thin film showed net pattern. When the selective velocity was set in 529 m/s, a structure in which ring pattern was overlapped on the net pattern was obtained. 2 figs.

  7. Effective entrapment of protein into polylactide microcapsule by solvent evaporation of W/O/W emulsion; W/O/W emarushon no ekichu kansoho ni yoru pori nyusan maikurokapuseru eno tanpakushitsu no naiho seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Shiomori, K.; Kawano, Y. [Miyazaki University, Miyazaki (Japan). Dept. of Applied Chemistry; Kiyoyama, S. [Miyakonojo National College of Technology, Miyazaki (Japan). Dept. of Chemical Science and Engineering; Yoshizawa, H. [Okayama University, Okayama (Japan). Dept. of Environmental Chemistry and Materials; Uemura, Y.; Hatate, Y. [Kagoshima University, Kagoshima (Japan). Dept. of Applied Chemistry and Chemical Engineering

    2000-01-10

    Entrapment of bovine serum albumin into microcapsule using polylactic acid as a wall material was carried out by solvent evaporation of a W/O/W emulsion prepared by a two-step emulsification method. Effects of the conditions in the first step emulsification, which gave a W/O emulsion, and the concentrations of additives in the inner and outer aqueous phases on the entrapment efficiency and the morphology of the microcapsule are discussed. The entrapment efficiency of albumin decreases with increasing in the hold up of dispersion phase in the first step W/O emulsion preparation, and the concentration of additives in the inner aqueous phase. On the other hand, by ultrasonic treatment for W/O emulsion and an increase in the concentration of additives in the outer aqueous phase, entrapment efficiency of the protein increases. Permeation of water from the outer in to the inner aqueous phase by osmotic pressure difference, which causes the coalescence of the inner aqueous phase droplets and a decrease in the capsule wall thickness, decreases the entrapment efficiency. By considering these factors, almost all the amount of albumin dissolved in the inner aqueous phase can be entrapped in the capsule, and it is possible to control the entrapment of water soluble core materials in the preparation of microcapsules by the solvent evaporation method. (author)

  8. Metallurgy of multifilamentary superconductors. Fabrication of new materials by designing structure and controlling diffusion reaction; Kyokusai tashin chodendosen no metaraji. Kozo sekkei/kakusan hanno seigyo ni yoru shinzairyo no sosei

    Energy Technology Data Exchange (ETDEWEB)

    Takeuchi, T. [National Research Inst. for Metals, Tsukuba, Ibaraki (Japan)

    1996-03-20

    Multifilamentary structure aimed to keep the stability of superconducting condition has made possible the control of diffusion reaction, phase stability, introduction of pinning center (heterogeneity point) and so forth because of the design possibility of metallurgical parameters like boundary arrangement/density and so forth. These controls are of course important for the other materials except superconducting materials. In this report, firstly, the originally role of the multifilamentary structure is outlined from electromagnetic point of view. Secondly, bronze method which is the production method of Nb3Sn compounds wire and is an appropriate method for the fabrication of multifilamentary structure is introduced. This method is a collection of elemental tecnologies for the metallurgy of multifilamentary materials like material design, plastic fabrication, diffusion heat treatment, composition control and so forth. New material can be fabricated by controlling diffusion reaction when this multifilamentary structure is applied positively. Further, high performance of superconductivity is possible by the optimization of the distribution of the heterogeneous point, pinning point of magnetic flux line. 11 refs., 6 figs., 1 tab.

  9. Systems engineering simplified

    CERN Document Server

    Cloutier, Robert; Bone, Mary Alice

    2015-01-01

    IntroductionOverviewDiscussion of Common TerminologyThe Case for Systems EngineeringA Brief History of Systems EngineeringSystem ExamplesSummaryThe System Life CycleManaging System Development-The Vee ModelSystem ProductionSystem Utilization and SupportSystem Retirement and DisposalOther Systems Engineering Development ModelsSpiral ModelAgile Model for Systems EngineeringSystem of InterestAbstraction and DecompositionIntegrationDeveloping and Managing RequirementsCyclone Requiremen

  10. Cardiovascular System

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    7.1 Heart failure2007175 Effects of recombinant human brain natriuretic peptide on aldosterone and endothelin-1 in treatment of heart failure. FU Yao(付尧),et al. Dept Cardiol, 1st Affili Hosp, China Med Univ, Shenyang 110001. Chin Cir J 2007;22(1):35-37. Obiective To study the efficacy and the effects of recombinant human brain natriuretic peptide(rhBNP) on aldosterone and endothelin-1 in the treatment of congestive heart failure(CHF).Methods A randomized, open, controlled clinical trial was conducted in 35 patients with CHF. Eighteen received rhBNP and 17 were treated with nitroglycerin as controls. The changes hemodynamic indexes, the plasma concentrations of K+, Na+, aldo-sterone(ALD) and endothelin-1 (ET-1) in order to examine the efficacy and mechanism of rhBNP. Results Between experiment and control groups significant differences were found in the decreasing of PCWP, PAP and plasma concentration of Na+, ALD, ET-1, and in the increasing of plasma concentration of K+ (P<0.05~0.01). Conclusion The mechanism of rhBNP may be associated with the overactivation of renin-angiotension-aldosterone system, and the inhibited production of endothelin-1.

  11. Systems Biology and Health Systems Complexity in;

    NARCIS (Netherlands)

    Donald Combs, C.; Barham, S.R.; Sloot, P.M.A.

    2016-01-01

    Systems biology addresses interactions in biological systems at different scales of biological organization, from the molecular to the cellular, organ, organism, societal, and ecosystem levels. This chapter expands on the concept of systems biology, explores its implications for individual patients

  12. System safety education focused on system management

    Science.gov (United States)

    Grose, V. L.

    1971-01-01

    System safety is defined and characteristics of the system are outlined. Some of the principle characteristics include role of humans in hazard analysis, clear language for input and output, system interdependence, self containment, and parallel analysis of elements.

  13. Respiratory System

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    8.1 Respiratory failure2007204 Comparison of the effects of BiPAP ventilation combined with lung recruitment maneuvers and low tidal volume A/C ventilation in patients with acute respiratory distress syndrome. WANG Xiaozhi(王晓芝),et al. Dept Respir & Intensive Care Unit, Binzhou Med Coll, Binzhou 256603. Chin J Tuberc Respir Dis 2007;30(1):44-47. Objective To compare the effects of BiPAP ventilation combined with lung recruitment maneuvers(LRM) with low tidal volume A/C ventilation in patients with acute respiratory distress syndrome (ARDS). Methods A prospective, randomized comparison of BiPAP mechanical ventilation combined with lung recruitment maneuvers(test group) with low tidal volume A/C ventilation (control group) was conducted in 28 patients with ARDS. FiO2/PaO2 ratio, respiratory system compliance(Cs), central venous pressure (CVP), duration of ventilation support were recorded at 0 h, 48 h and 72 h separately. The ventilation associated lung injury and mortality at 28 d were also recorded. Results The FiO2/PaO2 ratio were (298±16) and (309±16) cm H2O, Cs were (38.4±2.2) and (42.0±1.3) ml/cm H2O, CVP were (13.8±0.8) and (11.6±0.7) cm H2O in the test group at 48 h and 72 h separately. In the control group, FiO2/PaO2 ratio were (212±12) and (246±17) cm H2O, Cs were (29.5±1.3) and (29.0±1.0) ml/cm H2O, CVP were 18.6±1.1 and (16.8±1.0) cm H2O. The results were better in the test group as compared with the control group (t=10.03-29. 68, all P<0.01). The duration of ventilation support in the test group was shorter than the control group [(14±3) d vs (19±3)d, t=4.80, P<0.01]. The mortality in 28 d and ventilation associated lung injury were similar in the two groups. Conclusion The results show that combination of LRM with BiPAP mode ventilation, as compared with the control group, contributes to the improved FiO2/PaO2 ratio, pulmonary compliance, stable homodynamic and shorter duration of ventilation support in patients with ARDs.

  14. Quality management system

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Mu Sung

    2009-08-15

    This book deals with ISO9001 quality management system which includes summary of this system such as classification of quality, principle of quality management, and definition, requirement and procedure of quality management system, introduction of ISO9001 system like model of ISO9001 quality management system, ISO certificate system, structure of ISO9001 standard, requirement of ISO9001 quality management system, process approach and documentation of system, propel cases of ISO9001 quality management system.

  15. Systems theory of interconnected port contact systems

    NARCIS (Netherlands)

    Eberard, D.; Maschke, B.M.; Schaft, A.J. van der

    2005-01-01

    Port-based network modeling of a large class of complex physical systems leads to dynamical systems known as port-Hamiltonian systems. The key ingredient of any port-Hamiltonian system is a power-conserving interconnection structure (mathematically formalized by the geometric notion of a Dirac struc

  16. Protecting Information in Systems of Systems

    NARCIS (Netherlands)

    Trivellato, Daniel; Zannone, Nicola; Etalle, Sandro

    2011-01-01

    Systems of Systems (SoS) are dynamic, distributed coalitions of autonomous and heterogeneous systems that collaborate to achieve a common goal. While offering several advantages in terms of scalability and flexibility, the SoS paradigm has a strong impact on system interoperability and on the securi

  17. Advanced Systems Theory Applied to AMB Systems

    NARCIS (Netherlands)

    Balini, H.M.N.K.

    2011-01-01

    In this thesis we look at the application of advanced systems theoretic algorithms for an experimental Active Magnetic Bearing System (AMB). These systems are inherently unstable and therefore require a feedback controller. Accurate modeling of these systems with input-output data is hindered due to

  18. Square conservation systems and Hamiltonian systems

    Institute of Scientific and Technical Information of China (English)

    王斌; 曾庆存; 季仲贞

    1995-01-01

    The internal and external relationships between the square conservation scheme and the symplectic scheme are revealed by a careful study on the interrelation between the square conservation system and the Hamiltonian system in the linear situation, thus laying a theoretical basis for the application and extension of symplectic schemes to square conservations systems, and of those schemes with quadratic conservation properties to Hamiltonian systems.

  19. A Security Framework for Systems of Systems

    NARCIS (Netherlands)

    Trivellato, Daniel; Zannone, Nicola; Etalle, Sandro

    2011-01-01

    Systems of systems consist of a wide variety of dynamic, distributed coalitions of autonomous and heterogeneous systems that collaborate to achieve a common goal. While offering several advantages in terms of scalability and flexibility, this new paradigm has a strong impact on system

  20. Understanding Patterns for System of Systems Integration

    DEFF Research Database (Denmark)

    Kazman, Rick; Schmid, Klaus; Nielsen, Claus Ballegård

    2013-01-01

    of systems integration patterns. These characteristics at the same time support the architecting process by highlighting important issues a SoS architect needs to consider. We discuss the consolidated template and illustrate it with an example pattern. We also discuss the integration of this novel pattern......Architecting systems of systems is well known to be a formidable challenge. A major aspect in this is defining the integration among the systems that constitute the system of systems. In this paper, we aim to support the SoS architect by systematically developing a way to characterize system...

  1. Concept and System of Personification Control System

    Institute of Scientific and Technical Information of China (English)

    Bai,Fengshuang; Yin,Yixin; Tu,Xuyan; Zhang,Ying

    2006-01-01

    This paper provides the system and conception of the Personification Control System (PCS) on the basis of Intelligent Control System based on Artificial life (ICS/AL), Artificial Emotion, Humanoid Control, and Intelligent Control System based on Field bus. According to system science and deciding of organize of biology, the Pyramid System of PCS are created. Then Pyramid System of PCS which is made up of PCS1/H, PCS1/S, PCS1/O, PCS1/C and PCS1/G is described.

  2. Networked control of microgrid system of systems

    Science.gov (United States)

    Mahmoud, Magdi S.; Rahman, Mohamed Saif Ur; AL-Sunni, Fouad M.

    2016-08-01

    The microgrid has made its mark in distributed generation and has attracted widespread research. However, microgrid is a complex system which needs to be viewed from an intelligent system of systems perspective. In this paper, a network control system of systems is designed for the islanded microgrid system consisting of three distributed generation units as three subsystems supplying a load. The controller stabilises the microgrid system in the presence of communication infractions such as packet dropouts and delays. Simulation results are included to elucidate the effectiveness of the proposed control strategy.

  3. D0 Cryo System Control System Autodialer

    Energy Technology Data Exchange (ETDEWEB)

    Urbin, J.; /Fermilab

    1990-04-17

    The DO cryogenic system is controlled by a TI565-PLC based control system. This allows the system to be unmanned when in steady state operation. System experts will need to be contacted when system parameters exceed normal operating points and reach alarm setpoints. The labwide FIRUS system provides one alarm monitor and communication link. An autodialer provides a second and more flexible alarm monitor and communication link. The autodialer monitors contact points in the control system and after receiving indication of an alarm accesses a list of experts which it calls until it receives an acknowledgement. There are several manufacturers and distributors of autodialer systems. This EN explains the search process the DO cryo group used to fmd an autodialer system that fit the cryo system's needs and includes information and specs for the unit we chose.

  4. Integrated library systems.

    Science.gov (United States)

    Goldstein, C M

    1983-07-01

    The development of integrated library systems is discussed. The four major discussion points are (1) initial efforts; (2) network resources; (3) minicomputer-based systems; and (4) beyond library automation. Four existing systems are cited as examples of current systems.

  5. Freshwater systems; Frisch gezapft

    Energy Technology Data Exchange (ETDEWEB)

    Meyer, J.P.

    2008-06-09

    Increasingly, providers of solar systems are also offering freshwater systems, although these are more costly than combined storage systems. The contribution discusses the pros and cons of these systems as well as the freshwater quality. (orig.)

  6. System design specification Brayton Isotope Power System (BIPS) Flight System (FS), and Ground Demonstration System (GDS)

    Energy Technology Data Exchange (ETDEWEB)

    1976-06-14

    The system design specification for ground demonstration, development, and flight qualification of a Brayton Isotope Power System (BIPS) is presented. The requirements for both a BIPS conceptual Flight System (FS) and a Ground Demonstration System (GDS) are defined.

  7. Situation awareness with systems of systems

    CERN Document Server

    Tretmans, Jan; Borth, Michael

    2013-01-01

    This book discusses various aspects, challenges, and solutions for developing systems-of-systems for situation awareness, using applications in the domain of maritime safety and security.  Topics include advanced, multi-objective visualization methods for situation awareness, stochastic outlier selection, rule-based anomaly detection, an ontology-based event model for semantic reasoning, new methods for semi-automatic generation of adapters bridging communication gaps, security policies for systems-of-systems, trust assessment, and methods to deal with the dynamics of systems-of-systems in run-time monitoring, testing, and diagnosis. Architectural considerations for designing information-centric systems-of-systems such as situation awareness systems, and an integrated demonstrator implementing many of the investigated aspects, complete the book.

  8. System of systems modeling and analysis.

    Energy Technology Data Exchange (ETDEWEB)

    Campbell, James E.; Anderson, Dennis James; Longsine, Dennis E. (Intera, Inc., Austin, TX); Shirah, Donald N.

    2005-01-01

    This report documents the results of an LDRD program entitled 'System of Systems Modeling and Analysis' that was conducted during FY 2003 and FY 2004. Systems that themselves consist of multiple systems (referred to here as System of Systems or SoS) introduce a level of complexity to systems performance analysis and optimization that is not readily addressable by existing capabilities. The objective of the 'System of Systems Modeling and Analysis' project was to develop an integrated modeling and simulation environment that addresses the complex SoS modeling and analysis needs. The approach to meeting this objective involved two key efforts. First, a static analysis approach, called state modeling, has been developed that is useful for analyzing the average performance of systems over defined use conditions. The state modeling capability supports analysis and optimization of multiple systems and multiple performance measures or measures of effectiveness. The second effort involves time simulation which represents every system in the simulation using an encapsulated state model (State Model Object or SMO). The time simulation can analyze any number of systems including cross-platform dependencies and a detailed treatment of the logistics required to support the systems in a defined mission.

  9. Computer System Design System-on-Chip

    CERN Document Server

    Flynn, Michael J

    2011-01-01

    The next generation of computer system designers will be less concerned about details of processors and memories, and more concerned about the elements of a system tailored to particular applications. These designers will have a fundamental knowledge of processors and other elements in the system, but the success of their design will depend on the skills in making system-level tradeoffs that optimize the cost, performance and other attributes to meet application requirements. This book provides a new treatment of computer system design, particularly for System-on-Chip (SOC), which addresses th

  10. Smart electromechanical systems the central nervous system

    CERN Document Server

    Kurbanov, Vugar

    2017-01-01

    This book describes approaches to solving the problems of developing the central nervous system of robots (CNSR) based on smart electromechanical systems (SEMS) modules, principles of construction of the various modules of the central nervous system and variants of mathematical software CNSR in control systems for intelligent robots. It presents the latest advances in theory and practice at the Russian Academy of Sciences. Developers of intelligent robots to solve modern problems in robotics are increasingly addressing the use of the bionic approach to create robots that mimic the complexity and adaptability of biological systems. These have smart electromechanical system (SEMS), which are used in various cyber-physical systems (CPhS), and allow the functions of calculation, control, communications, information storage, monitoring, measurement and control of parameters and environmental parameters to be integrated. The behavior of such systems is based on the information received from the central nervous syst...

  11. Linking Political Systems and War Systems

    DEFF Research Database (Denmark)

    Harste, Gorm

    2009-01-01

    Decisive parts of the Western political system have demonstrated a seemingly surprising misinterpretation of military might. As Madelaine Albright has suggested, the mighty perceived themselves as "almighty". Political power seems to have invested in instrumental coercive power relations and found...... military coercion to be the appropriate mean. Using the system theory and the theory of systemic risks displayed by the German sociologist Niklas Luhmann the article demonstrates how military systems due to their own autonomy and autopoiesis do not fit into the idea of political government....... The Clausewitzian ideal of a political system that could continue its power games by means of war was moderated by Clausewitz' own analysis of "friction". How can a political system be so blind towards the possibilities of another system? What are the risks of systemic blind spots? The argument of the paper...

  12. Situation Awareness with Systems of Systems

    NARCIS (Netherlands)

    Laar, P. van de; Tretmans, J.; Borth, M.

    2013-01-01

    This book discusses various aspects, challenges, and solutions for developing systems-of-systems for situation awareness, using applications in the domain of maritime safety and security. Topics include advanced, multi-objective visualization methods for situation awareness, stochastic outlier

  13. Linking Political Systems and War Systems

    DEFF Research Database (Denmark)

    Harste, Gorm

    2009-01-01

    Decisive parts of the Western political system have demonstrated a seemingly surprising misinterpretation of military might. As Madelaine Albright has suggested, the mighty perceived themselves as "almighty". Political power seems to have invested in instrumental coercive power relations and found...... military coercion to be the appropriate mean. Using the system theory and the theory of systemic risks displayed by the German sociologist Niklas Luhmann the article demonstrates how military systems due to their own autonomy and autopoiesis do not fit into the idea of political government....... The Clausewitzian ideal of a political system that could continue its power games by means of war was moderated by Clausewitz' own analysis of "friction". How can a political system be so blind towards the possibilities of another system? What are the risks of systemic blind spots? The argument of the paper...

  14. Engine Auxiliary System Guideline: Lubricating Oil Systems

    OpenAIRE

    Linna, Joni

    2015-01-01

    This thesis was done for Wärtsilä Technical Services organization, the purpose of this work was to gather and structure information about the lubricating oil systems from the company’s internal databases, interviews with system specialists and from different literature sources covering Ship Power and Power Plant products. The outcome was a guideline, covering typical power plant and marine system descriptions, all components used in the lubricating oil system with their functional description...

  15. COMPARISON TRADITIONAL SYSTEMS OF TUNNEL FORMWORK SYSTEM

    OpenAIRE

    ERKAN, İbrahim Hakkı; Yılmaz, Ülkü Sultan; Türken, Hakan

    2011-01-01

    Tunnel formwork systems became the most widespread construction technology preferred in recent years in Turkey due to rapidity and economy. In this study, before all else, a brief information was given about the types and construction techniques of tunnel formwork systems. Then a reinforced concrete building sample was firstly modeled as it was constructed with the tunnel formwork system and secondly modeled as it was formed by a frame system with shear walls constructed by the traditional re...

  16. LCLS XTOD Attenuator System System Concept Report

    Energy Technology Data Exchange (ETDEWEB)

    Kishiyama, K; Roeben, M; Trent, J; Ryutov, D; Shen, S

    2006-04-12

    The attenuator system for the Linac Coherent Light Source (LCLS) X-ray Transport, Optics and Diagnostics (XTOD) system has been configured and analyzed by the Lawrence Livermore National Laboratory's New Technologies Engineering Division (NTED) as requested by the SLAC/LCLS program. The system layout, performance analyses and selection of the vacuum components are presented in this System Conceptual Review (SCR) report. Also included are the plans for prototype, procurement, mechanical integration, and the cost estimates.

  17. Designing information systems

    CERN Document Server

    Blethyn, Stanley G

    2014-01-01

    Designing Information Systems focuses on the processes, methodologies, and approaches involved in designing information systems. The book first describes systems, management and control, and how to design information systems. Discussions focus on documents produced from the functional construction function, users, operators, analysts, programmers and others, process management and control, levels of management, open systems, design of management information systems, and business system description, partitioning, and leveling. The text then takes a look at functional specification and functiona

  18. Modeling learning technology systems as business systems

    NARCIS (Netherlands)

    Avgeriou, Paris; Retalis, Symeon; Papaspyrou, Nikolaos

    2003-01-01

    The design of Learning Technology Systems, and the Software Systems that support them, is largely conducted on an intuitive, ad hoc basis, thus resulting in inefficient systems that defectively support the learning process. There is now justifiable, increasing effort in formalizing the engineering o

  19. Non linear system become linear system

    Directory of Open Access Journals (Sweden)

    Petre Bucur

    2007-01-01

    Full Text Available The present paper refers to the theory and the practice of the systems regarding non-linear systems and their applications. We aimed the integration of these systems to elaborate their response as well as to highlight some outstanding features.

  20. Expert Systems for auditing management information systems

    Directory of Open Access Journals (Sweden)

    Gheroghe Popescu

    2007-05-01

    Full Text Available Expert systems are built with the help of: specialised programming languages or expert system generators (shell. But this structure was reached after tens of years of work and research, because expert systems are nothing but pragmatic capitalisation of the results of research carried out in artificial intelligence and theory of knowledge.

  1. General Systems Theory and Instructional Systems Design.

    Science.gov (United States)

    Salisbury, David F.

    1990-01-01

    Describes basic concepts in the field of general systems theory (GST) and identifies commonalities that exist between GST and instructional systems design (ISD). Models and diagrams that depict system elements in ISD are presented, and two matrices that show how GST has been used in ISD literature are included. (11 references) (LRW)

  2. The complement system in systemic autoimmune disease

    NARCIS (Netherlands)

    Chen, Min; Daha, Mohamed R.; Kallenberg, Cees G. M.

    2010-01-01

    Complement is part of the innate immune system. Its major function is recognition and elimination of pathogens via direct killing and/or stimulation of phagocytosis. Activation of the complement system is, however, also involved in the pathogenesis of the systemic autoimmune diseases. Activation via

  3. Optical system defect propagation in ABCD systems

    DEFF Research Database (Denmark)

    McKinley, W.G.; Yura, H.T.; Hanson, Steen Grüner

    1988-01-01

    We describe how optical system defects (tilt/jitter, decenter, and despace) propagate through an arbitrary paraxial optical system that can be described by an ABCD ray transfer matrix. A pedagogical example is given that demonstrates the effect of alignment errors on a typical optical system....... © 1988 Optical Society of America...

  4. Observing System Evaluations Using GODAE Systems

    Science.gov (United States)

    2009-09-01

    Journal of Marine Systems 35...dimensional temperature fields: A first approach based on simulated observations. Journal of Marine Systems 46:85-98. Langland, R.H., and N.L. Baker...capabilities of multisatellite altimeter missions: First results with real data in the Mediterranean Sea. Journal of Marine Systems 65:190-211.

  5. Modeling learning technology systems as business systems

    NARCIS (Netherlands)

    Avgeriou, Paris; Retalis, Symeon; Papaspyrou, Nikolaos

    2003-01-01

    The design of Learning Technology Systems, and the Software Systems that support them, is largely conducted on an intuitive, ad hoc basis, thus resulting in inefficient systems that defectively support the learning process. There is now justifiable, increasing effort in formalizing the engineering

  6. Biomedical signals and systems

    CERN Document Server

    Tranquillo, Joseph V

    2013-01-01

    Biomedical Signals and Systems is meant to accompany a one-semester undergraduate signals and systems course. It may also serve as a quick-start for graduate students or faculty interested in how signals and systems techniques can be applied to living systems. The biological nature of the examples allows for systems thinking to be applied to electrical, mechanical, fluid, chemical, thermal and even optical systems. Each chapter focuses on a topic from classic signals and systems theory: System block diagrams, mathematical models, transforms, stability, feedback, system response, control, time

  7. Psychology of system design

    CERN Document Server

    Meister, D

    2014-01-01

    This is a book about systems, including: systems in which humans control machines; systems in which humans interact with humans and the machine component is relatively unimportant; systems which are heavily computerized and those that are not; and governmental, industrial, military and social systems. The book deals with both traditional systems like farming, fishing and the military, and with systems just now tentatively emerging, like the expert and the interactive computer system. The emphasis is on the system concept and its implications for analysis, design and evaluation of these many di

  8. Operating System Security

    CERN Document Server

    Jaeger, Trent

    2008-01-01

    Operating systems provide the fundamental mechanisms for securing computer processing. Since the 1960s, operating systems designers have explored how to build "secure" operating systems - operating systems whose mechanisms protect the system against a motivated adversary. Recently, the importance of ensuring such security has become a mainstream issue for all operating systems. In this book, we examine past research that outlines the requirements for a secure operating system and research that implements example systems that aim for such requirements. For system designs that aimed to

  9. Lighting system with thermal management system

    Science.gov (United States)

    Arik, Mehmet; Weaver, Stanton; Stecher, Thomas; Seeley, Charles; Kuenzler, Glenn; Wolfe, Jr., Charles; Utturkar, Yogen; Sharma, Rajdeep; Prabhakaran, Satish; Icoz, Tunc

    2013-05-07

    Lighting systems having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system is configured to provide an air flow, such as a unidirectional air flow, through the housing structure in order to cool the light source. The driver electronics are configured to provide power to each of the light source and the thermal management system.

  10. Lighting system with thermal management system

    Energy Technology Data Exchange (ETDEWEB)

    Arik, Mehmet; Weaver, Stanton Earl; Stecher, Thomas Elliot; Seeley, Charles Erklin; Kuenzler, Glenn Howard; Wolfe, Jr, Charles Franklin; Utturkar, Yogen Vishwas; Sharma, Rajdeep; Prabhakaran, Satish; Icoz, Tunc

    2016-10-11

    Lighting systems having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system is configured to provide an air flow, such as a unidirectional air flow, through the housing structure in order to cool the light source. The driver electronics are configured to provide power to each of the light source and the thermal management system.

  11. Systems Measures of Water Distribution System Resilience

    Energy Technology Data Exchange (ETDEWEB)

    Klise, Katherine A. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Murray, Regan [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Walker, La Tonya Nicole [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2015-01-01

    Resilience is a concept that is being used increasingly to refer to the capacity of infrastructure systems to be prepared for and able to respond effectively and rapidly to hazardous events. In Section 2 of this report, drinking water hazards, resilience literature, and available resilience tools are presented. Broader definitions, attributes and methods for measuring resilience are presented in Section 3. In Section 4, quantitative systems performance measures for water distribution systems are presented. Finally, in Section 5, the performance measures and their relevance to measuring the resilience of water systems to hazards is discussed along with needed improvements to water distribution system modeling tools.

  12. Intelligent test integration system

    Science.gov (United States)

    Sztipanovits, J.; Padalkar, S.; Rodriguez-Moscoso, J.; Kawamura, K.; Purves, B.; Williams, R.; Biglari, H.

    1988-01-01

    A new test technology is described which was developed for space system integration. The ultimate purpose of the system is to support the automatic generation of test systems in real time, distributed computing environments. The Intelligent Test Integration System (ITIS) is a knowledge based layer above the traditional test system components which can generate complex test configurations from the specification of test scenarios.

  13. Autonomous photovoltaic lighting system

    OpenAIRE

    Ahmed A. A. Hafez; Montesinos Miracle, Daniel; Sudrià Andreu, Antoni

    2012-01-01

    This paper introduces a comparison between the conventional and Photovoltaic (PV) lighting systems. A simple sizing procedure for a PV stand-alone system was advised. The paper also proposes a novel PV lighting system. The proposed system is simple, compact and reliable. The system operation was investigated by thoroughly mathematical and simulation work.

  14. Mapping biological systems to network systems

    CERN Document Server

    Rathore, Heena

    2016-01-01

    The book presents the challenges inherent in the paradigm shift of network systems from static to highly dynamic distributed systems – it proposes solutions that the symbiotic nature of biological systems can provide into altering networking systems to adapt to these changes. The author discuss how biological systems – which have the inherent capabilities of evolving, self-organizing, self-repairing and flourishing with time – are inspiring researchers to take opportunities from the biology domain and map them with the problems faced in network domain. The book revolves around the central idea of bio-inspired systems -- it begins by exploring why biology and computer network research are such a natural match. This is followed by presenting a broad overview of biologically inspired research in network systems -- it is classified by the biological field that inspired each topic and by the area of networking in which that topic lies. Each case elucidates how biological concepts have been most successfully ...

  15. Operating System Performance Analyzer for Embedded Systems

    Directory of Open Access Journals (Sweden)

    Shahzada Khayyam Nisar

    2011-11-01

    Full Text Available RTOS provides a number of services to an embedded system designs such as case management, memory management, and Resource Management to build a program. Choosing the best OS for an embedded system is based on the available OS for system designers and their previous knowledge and experience. This can cause an imbalance between the OS and embedded systems. RTOS performance analysis is critical in the design and integration of embedded software to ensure that limits the application meet at runtime. To select an appropriate operating system for an embedded system for a particular application, the OS services to be analyzed. These OS services are identified by parameters to establish performance metrics. Performance Metrics selected include context switching, Preemption time and interrupt latency. Performance Metrics are analyzed to choose the right OS for an embedded system for a particular application.

  16. Systems Architecture for a Nationwide Healthcare System.

    Science.gov (United States)

    Abin, Jorge; Nemeth, Horacio; Friedmann, Ignacio

    2015-01-01

    From a national level to give Internet technology support, the Nationwide Integrated Healthcare System in Uruguay requires a model of Information Systems Architecture. This system has multiple healthcare providers (public and private), and a strong component of supplementary services. Thus, the data processing system should have an architecture that considers this fact, while integrating the central services provided by the Ministry of Public Health. The national electronic health record, as well as other related data processing systems, should be based on this architecture. The architecture model described here conceptualizes a federated framework of electronic health record systems, according to the IHE affinity model, HL7 standards, local standards on interoperability and security, as well as technical advice provided by AGESIC. It is the outcome of the research done by AGESIC and Systems Integration Laboratory (LINS) on the development and use of the e-Government Platform since 2008, as well as the research done by the team Salud.uy since 2013.

  17. Autonomic Nervous System Disorders

    Science.gov (United States)

    Your autonomic nervous system is the part of your nervous system that controls involuntary actions, such as the beating of your heart ... breathing and swallowing Erectile dysfunction in men Autonomic nervous system disorders can occur alone or as the result ...

  18. Calo trigger acquisition system

    CERN Multimedia

    Franchini, Matteo

    2016-01-01

    Calo trigger acquisition system - Evolution of the acquisition system from a multiple boards system (upper, orange cables) to a single board one (below, light blue cables) where all the channels are collected in a single board.

  19. Brain and Nervous System

    Science.gov (United States)

    ... Your 1- to 2-Year-Old Brain and Nervous System KidsHealth > For Parents > Brain and Nervous System Print ... brain is quite the juggler. Anatomy of the Nervous System If you think of the brain as a ...

  20. for hybrid dynamical systems

    Directory of Open Access Journals (Sweden)

    Wassim M. Haddad

    2001-01-01

    Full Text Available In this paper we develop a unified dynamical systems framework for a general class of systems possessing left-continuous flows; that is, left-continuous dynamical systems. These systems are shown to generalize virtually all existing notions of dynamical systems and include hybrid, impulsive, and switching dynamical systems as special cases. Furthermore, we generalize dissipativity, passivity, and nonexpansivity theory to left-continuous dynamical systems. Specifically, the classical concepts of system storage functions and supply rates are extended to left-continuous dynamical systems providing a generalized hybrid system energy interpretation in terms of stored energy, dissipated energy over the continuous-time dynamics, and dissipated energy over the resetting events. Finally, the generalized dissipativity notions are used to develop general stability criteria for feedback interconnections of left-continuous dynamical systems. These results generalize the positivity and small gain theorems to the case of left-continuous, hybrid, and impulsive dynamical systems.

  1. Bridge Management Systems

    DEFF Research Database (Denmark)

    Thoft-Christensen, Palle

    In this paper bridge management systems are discussed with special emphasis on management systems for reinforced concrete bridges. Management systems for prestressed concrete bridges, steel bridges, or composite bridges can be developed in a similar way....

  2. Manned systems technology discipline

    Science.gov (United States)

    Bretoi, Remus

    1990-01-01

    Viewgraphs on manned systems technology discipline for Space Station Freedom are presented. Topics covered include: crew-systems interfaces and interactions; crew training; on-board systems maintenance and support; habitability and environment; and computational human factors.

  3. System Software 7 Macintosh

    CERN Multimedia

    1991-01-01

    System 7 is a single-user graphical user interface-based operating system for Macintosh computers and was part of the classic Mac OS line of operating systems. It was introduced on May 13, 1991, by Apple Computer. It succeeded System 6, and was the main Macintosh operating system until it was succeeded by Mac OS 8 in 1997. Features added with the System 7 release included virtual memory, personal file sharing, QuickTime, QuickDraw 3D, and an improved user interface. This is the first real major evolution of the Macintosh system, bringing a significant improvement in the user interface, improved stability and many new features such as the ability to use multiple applications at the same time. "System 7" is the last operating system name of the Macintosh that contains the word "system". Macintosh operating systems were later called "Mac OS" (for Macintosh Operating System).

  4. Game Information System

    CERN Document Server

    Warnars, Spits; Kingdom, United; 10.5121/ijcsit.2010.2310

    2010-01-01

    In this Information system age many organizations consider information system as their weapon to compete or gain competitive advantage or give the best services for non profit organizations. Game Information System as combining Information System and game is breakthrough to achieve organizations’ performance. The Game Information System will run the Information System with game and how game can be implemented to run the Information System. Game is not only for fun and entertainment, but will be a challenge to combine fun and entertainment with Information System. The Challenge to run the information system with entertainment, deliver the entertainment with information system all at once. Game information system can be implemented in many sectors as like the information system itself but in difference’s view. A view of game which people can joy and happy and do their transaction as a fun things.

  5. Central Nervous System Vasculitis

    Science.gov (United States)

    ... Nervous System (CNS) Vasculitis Central Nervous System (CNS) Vasculitis Central nervous system (CNS) vasculitis is inflammation of ... CNS (PACNS). What is the cause of CNS Vasculitis? How the vessels in the brain become inflamed ...

  6. Immune System Quiz

    Science.gov (United States)

    ... Know About Puberty Train Your Temper Quiz: Immune System KidsHealth > For Kids > Quiz: Immune System Print A A A How much do you know about your immune system? Find out by taking this quiz! About KidsHealth ...

  7. What Are Expert Systems?

    Science.gov (United States)

    d'Agapeyeff, A.

    1986-01-01

    Intended for potential business users, this paper describes the main characteristics of expert systems; discusses practical use considerations; presents a taxonomy of the systems; and reviews several expert system development projects in business and industry. (MBR)

  8. The Trinity System

    Energy Technology Data Exchange (ETDEWEB)

    Archer, Billy Joe [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Vigil, Benny Manuel [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-01-13

    This paper describes the Trinity system, the first ASC Advanced Technology System (ATS-1). We describe the Trinity procurement timeline, the ASC computing strategy, the Trinity specific mission needs, and the Trinity system specifications.

  9. Marketing reporting system

    Directory of Open Access Journals (Sweden)

    Hanić Hasan M.

    2004-01-01

    Full Text Available The main components of a developed and good organized marketing information system are: internal reporting system, marketing reporting system, market research system and analytical marketing system. Marketing reporting system provides data and information about changes in business and micro marketing environment. This component of MIS ensures that marketing managers are up-to-date with what is going on, and to be informed about changes in company marketing environment.

  10. Marketing reporting system

    OpenAIRE

    Hanić Hasan M.

    2004-01-01

    The main components of a developed and good organized marketing information system are: internal reporting system, marketing reporting system, market research system and analytical marketing system. Marketing reporting system provides data and information about changes in business and micro marketing environment. This component of MIS ensures that marketing managers are up-to-date with what is going on, and to be informed about changes in company marketing environment.

  11. Small test SDHW systems

    DEFF Research Database (Denmark)

    Vejen, Niels Kristian

    1999-01-01

    Three small test SDHW systems was tested in a laboratory test facility.The three SDHW systems where all based on the low flow principe and a mantle tank but the design of the systems where different.......Three small test SDHW systems was tested in a laboratory test facility.The three SDHW systems where all based on the low flow principe and a mantle tank but the design of the systems where different....

  12. Small test SDHW systems

    DEFF Research Database (Denmark)

    Vejen, Niels Kristian

    1999-01-01

    Three small test SDHW systems was tested in a laboratory test facility.The three SDHW systems where all based on the low flow principe and a mantle tank but the design of the systems where different.......Three small test SDHW systems was tested in a laboratory test facility.The three SDHW systems where all based on the low flow principe and a mantle tank but the design of the systems where different....

  13. Law System in Japan

    OpenAIRE

    Andreea Lorena Ponaru

    2007-01-01

    This article attempts to present and explain the main features of the japanese law system. Japanese Law system was reformed during the domination of Tokugawa shogun family. In 1870, Foreign Governmental Systems Study Office was founded. By judicial sentences many french laws were introduced in Japanese law system. Roma-Tokyo-Berlin Alliance (1936) introduced a strong German influence in the law system. The Japanese judicial system has known five periods. In the first (1869-1888) were introduc...

  14. Battery systems engineering

    CERN Document Server

    Rahn, Christopher D

    2012-01-01

    A complete all-in-one reference on the important interdisciplinary topic of Battery Systems Engineering Focusing on the interdisciplinary area of battery systems engineering, this book provides the background, models, solution techniques, and systems theory that are necessary for the development of advanced battery management systems. It covers the topic from the perspective of basic electrochemistry as well as systems engineering topics and provides a basis for battery modeling for system engineering of electric and hybrid electric vehicle platforms. This original

  15. Airports Geographic Information System -

    Data.gov (United States)

    Department of Transportation — The Airports Geographic Information System maintains the airport and aeronautical data required to meet the demands of the Next Generation National Airspace System....

  16. Control system design method

    Science.gov (United States)

    Wilson, David G [Tijeras, NM; Robinett, III, Rush D.

    2012-02-21

    A control system design method and concomitant control system comprising representing a physical apparatus to be controlled as a Hamiltonian system, determining elements of the Hamiltonian system representation which are power generators, power dissipators, and power storage devices, analyzing stability and performance of the Hamiltonian system based on the results of the determining step and determining necessary and sufficient conditions for stability of the Hamiltonian system, creating a stable control system based on the results of the analyzing step, and employing the resulting control system to control the physical apparatus.

  17. Aeronautical Information System -

    Data.gov (United States)

    Department of Transportation — The Aeronautical Information System (AIS) is a leased weather automated system that provides a means of collecting and distributing aeronautical weather information...

  18. Cognitive Medical Multiagent Systems

    Directory of Open Access Journals (Sweden)

    Barna Iantovics

    2010-01-01

    Full Text Available The development of efficient and flexible agent-based medical diagnosis systems represents a recent research direction. Medical multiagent systems may improve the efficiency of traditionally developed medical computational systems, like the medical expert systems. In our previous researches, a novel cooperative medical diagnosis multiagent system called CMDS (Contract Net Based Medical Diagnosis System was proposed. CMDS system can solve flexibly a large variety of medical diagnosis problems. This paper analyses the increased intelligence of the CMDS system, which motivates its use for different medical problem’s solving.

  19. RECURSIVE SYSTEM IDENTIFICATION

    Institute of Scientific and Technical Information of China (English)

    Han-Fu Chen

    2009-01-01

    Most of existing methods in system identification with possible exception of those for linear systems are off-line in nature, and hence are nonrecursive.This paper demonstrates the recent progress in recursive system identification.The recursive identifi-cation algorithms are presented not only for linear systems (multivariate ARMAX systems) but also for nonlinear systems such as the Hammerstein and Wiener systems, and the non-linear ARX systems.The estimates generated by the algorithms are online updated and converge a.s.to the true values as time tends to infinity.

  20. Neural Systems Laboratory

    Data.gov (United States)

    Federal Laboratory Consortium — As part of the Electrical and Computer Engineering Department and The Institute for System Research, the Neural Systems Laboratory studies the functionality of the...

  1. Credit Management System

    Data.gov (United States)

    US Agency for International Development — Credit Management System. Outsourced Internet-based application. CMS stores and processes data related to USAID credit programs. The system provides information...

  2. Integrated Systems Health Management for Intelligent Systems

    Science.gov (United States)

    Figueroa, Fernando; Melcher, Kevin

    2011-01-01

    The implementation of an integrated system health management (ISHM) capability is fundamentally linked to the management of data, information, and knowledge (DIaK) with the purposeful objective of determining the health of a system. It is akin to having a team of experts who are all individually and collectively observing and analyzing a complex system, and communicating effectively with each other in order to arrive at an accurate and reliable assessment of its health. In this paper, concepts, procedures, and approaches are presented as a foundation for implementing an intelligent systems ]relevant ISHM capability. The capability stresses integration of DIaK from all elements of a system. Both ground-based (remote) and on-board ISHM capabilities are compared and contrasted. The information presented is the result of many years of research, development, and maturation of technologies, and of prototype implementations in operational systems.

  3. Epilogue: Systems Approaches and Systems Practice

    Science.gov (United States)

    Reynolds, Martin; Holwell, Sue

    Each of the five systems approaches discussed in this volume: system dynamics (SD), the viable systems model (VSM), strategic options development and analysis (SODA), soft systems methodology (SSM) and critical systems heuristics (CSH) has a pedigree. Not in the sense of the sometimes absurd spectacle of animals paraded at dog shows. Rather, their pedigree derives from their systems foundations, their capacity to evolve and their flexibility in use. None of the five approaches has developed out of use in restricted and controlled contexts of either low or high levels of complicatedness. Neither has any one of them evolved as a consequence of being applied only to situations with either presumed stakeholder agreement on purpose, or courteous disagreement amongst stakeholders, or stakeholder coercion. The compilation is not a celebration of abstract ‘methodologies', but of theoretically robust approaches that have a genuine pedigree in practice.

  4. Systems engineering for very large systems

    Science.gov (United States)

    Lewkowicz, Paul E.

    Very large integrated systems have always posed special problems for engineers. Whether they are power generation systems, computer networks or space vehicles, whenever there are multiple interfaces, complex technologies or just demanding customers, the challenges are unique. 'Systems engineering' has evolved as a discipline in order to meet these challenges by providing a structured, top-down design and development methodology for the engineer. This paper attempts to define the general class of problems requiring the complete systems engineering treatment and to show how systems engineering can be utilized to improve customer satisfaction and profit ability. Specifically, this work will focus on a design methodology for the largest of systems, not necessarily in terms of physical size, but in terms of complexity and interconnectivity.

  5. Metadata Management System for Healthcare Information Systems

    OpenAIRE

    Patil, Ketan Shripat

    2011-01-01

    The Utah Department of Health (UDOH) uses multiple and diverse healthcare information systems for managing, maintaining, and sharing the health information. To keep track of the important details about these information systems such as the operational details, data semantics, data exchange standards, and personnel responsible for maintaining and managing it is a monumental task, with several limitations. This report describes the design and implementation of the Metadata Management System (MD...

  6. L-system fractals

    CERN Document Server

    Mishra, Jibitesh

    2007-01-01

    The book covers all the fundamental aspects of generating fractals through L-system. Also it provides insight to various researches in this area for generating fractals through L-system approach & estimating dimensions. Also it discusses various applications of L-system fractals. Key Features: - Fractals generated from L-System including hybrid fractals - Dimension calculation for L-system fractals - Images & codes for L-system fractals - Research directions in the area of L-system fractals - Usage of various freely downloadable tools in this area - Fractals generated from L-System including hybrid fractals- Dimension calculation for L-system fractals- Images & codes for L-system fractals- Research directions in the area of L-system fractals- Usage of various freely downloadable tools in this area

  7. Distributed computer control systems

    Energy Technology Data Exchange (ETDEWEB)

    Suski, G.J.

    1986-01-01

    This book focuses on recent advances in the theory, applications and techniques for distributed computer control systems. Contents (partial): Real-time distributed computer control in a flexible manufacturing system. Semantics and implementation problems of channels in a DCCS specification. Broadcast protocols in distributed computer control systems. Design considerations of distributed control architecture for a thermal power plant. The conic toolset for building distributed systems. Network management issues in distributed control systems. Interprocessor communication system architecture in a distributed control system environment. Uni-level homogenous distributed computer control system and optimal system design. A-nets for DCCS design. A methodology for the specification and design of fault tolerant real time systems. An integrated computer control system - architecture design, engineering methodology and practical experience.

  8. Forming different planetary systems

    Institute of Scientific and Technical Information of China (English)

    Ji-Lin Zhou; Ji-Wei Xie; Hui-Gen Liu; Hui Zhang; Yi-Sui Sun

    2012-01-01

    With the increasing number of detected exoplanet samples,the statistical properties of planetary systems have become much clearer.In this review,we summarize the major statistical results that have been revealed mainly by radial velocity and transiting observations,and try to interpret them within the scope of the classical core-accretion scenario of planet formation,especially in the formation of different orbital architectures for planetary systems around main sequence stars.Based on the different possible formation routes for different planet systems,we tentatively classify them into three major catalogs:hot Jupiter systems,standard systems and distant giant planet systems.The standard systems can be further categorized into three sub-types under different circumstances:solar-like systems,hot Super-Earth systems,and subgiant planet systems.We also review the theory of planet detection and formation in binary systems as well as planets in star clusters.

  9. Site systems engineering: Systems engineering management plan

    Energy Technology Data Exchange (ETDEWEB)

    Grygiel, M.L. [Westinghouse Hanford Co., Richland, WA (United States)

    1996-05-03

    The Site Systems Engineering Management Plan (SEMP) is the Westinghouse Hanford Company (WHC) implementation document for the Hanford Site Systems Engineering Policy, (RLPD 430.1) and Systems Engineering Criteria Document and Implementing Directive, (RLID 430.1). These documents define the US Department of Energy (DOE), Richland Operations Office (RL) processes and products to be used at Hanford to implement the systems engineering process at the site level. This SEMP describes the products being provided by the site systems engineering activity in fiscal year (FY) 1996 and the associated schedule. It also includes the procedural approach being taken by the site level systems engineering activity in the development of these products and the intended uses for the products in the integrated planning process in response to the DOE policy and implementing directives. The scope of the systems engineering process is to define a set of activities and products to be used at the site level during FY 1996 or until the successful Project Hanford Management Contractor (PHMC) is onsite as a result of contract award from Request For Proposal DE-RP06-96RL13200. Following installation of the new contractor, a long-term set of systems engineering procedures and products will be defined for management of the Hanford Project. The extent to which each project applies the systems engineering process and the specific tools used are determined by the project`s management.

  10. Hot Spot Removal System: System description

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-09-01

    Hazardous wastes contaminated with radionuclides, chemicals, and explosives exist across the Department of Energy complex and need to be remediated due to environmental concerns. Currently, an opportunity is being developed to dramatically reduce remediation costs and to assist in the acceleration of schedules associated with these wastes by deploying a Hot Spot Removal System. Removing the hot spot from the waste site will remove risk driver(s) and enable another, more cost effective process/option/remedial alternative (i.e., capping) to be applied to the remainder of the site. The Hot Spot Removal System consists of a suite of technologies that will be utilized to locate and remove source terms. Components of the system can also be used in a variety of other cleanup activities. This Hot Spot Removal System Description document presents technologies that were considered for possible inclusion in the Hot Spot Removal System, technologies made available to the Hot Spot Removal System, industrial interest in the Hot Spot Removal System`s subsystems, the schedule required for the Hot Spot Removal System, the evaluation of the relevant technologies, and the recommendations for equipment and technologies as stated in the Plan section.

  11. SYSTEMS APPROACH FOR CONTEMPORARY COMPLEX TOURISM SYSTEMS

    Directory of Open Access Journals (Sweden)

    Tadeja Jere Jakulin

    2016-09-01

    Full Text Available Systems approach represents thinking outside the box and is connected to the transformation of common linear approach and thinking. Western society followed rules of classical western science, which form many centuries took analysis as mainstream of thinking and researching. One can find perfect and logical explanation for this. In the past, classical science researched matter and reached optimal results with analysis and analytical thinking. Nowadays more and more scientists research intangible world around matter and cooperate with prevailed, fastest growing service industry such as tourism. Following paper presents systems approach in tourism, which defines wideness, co-dependency among tourism system elements, and "big picture" point of view. In a frame of systems methodology, we will show the importance of systems approach in order to understand complexity in the area of tourism. At once an excellent example of the analytical approach will be shown in so called "the tip of the iceberg" theory, where events represent analytical thinking and structure or base of the iceberg represents systems approach. Complexity of the tourism systems will be explained and a model of a common tourism system developed. We claim that the analysis, in the past, caused technological progress; it caused the development of western science, which we now know it. It led to the discoveries but for dealing with contemporary complex challenges is not sufficient. Today a systems approach is suitable enough for dealing with complex question in the area of tourism and of course in global society.

  12. Novel central nervous system drug delivery systems.

    Science.gov (United States)

    Stockwell, Jocelyn; Abdi, Nabiha; Lu, Xiaofan; Maheshwari, Oshin; Taghibiglou, Changiz

    2014-05-01

    For decades, biomedical and pharmaceutical researchers have worked to devise new and more effective therapeutics to treat diseases affecting the central nervous system. The blood-brain barrier effectively protects the brain, but poses a profound challenge to drug delivery across this barrier. Many traditional drugs cannot cross the blood-brain barrier in appreciable concentrations, with less than 1% of most drugs reaching the central nervous system, leading to a lack of available treatments for many central nervous system diseases, such as stroke, neurodegenerative disorders, and brain tumors. Due to the ineffective nature of most treatments for central nervous system disorders, the development of novel drug delivery systems is an area of great interest and active research. Multiple novel strategies show promise for effective central nervous system drug delivery, giving potential for more effective and safer therapies in the future. This review outlines several novel drug delivery techniques, including intranasal drug delivery, nanoparticles, drug modifications, convection-enhanced infusion, and ultrasound-mediated drug delivery. It also assesses possible clinical applications, limitations, and examples of current clinical and preclinical research for each of these drug delivery approaches. Improved central nervous system drug delivery is extremely important and will allow for improved treatment of central nervous system diseases, causing improved therapies for those who are affected by central nervous system diseases.

  13. Recommender Systems for Social Tagging Systems

    CERN Document Server

    Balby Marinho, Leandro

    2012-01-01

    Social Tagging Systems are web applications in which users upload resources (e.g., bookmarks, videos, photos, etc.) and annotate it with a list of freely chosen keywords called tags. This is a grassroots approach to organize a site and help users to find the resources they are interested in. Social tagging systems are open and inherently social; features that have been proven to encourage participation. However, with the large popularity of these systems and the increasing amount of user-contributed content, information overload rapidly becomes an issue. Recommender Systems are well known appl

  14. Power system protection 2 systems and methods

    CERN Document Server

    1995-01-01

    The worldwide growth in demand for electricity has forced the pace of developments in electrical power system design to meet consumer needs for reliable, secure and cheap supplies. Power system protection, as a technology essential to high quality supply, is widely recognised as a specialism of growing and often critical importance, in which power system needs and technological progress have combined to result in rapid developments in policy and practice in recent years. In the United Kingdom, the need for appropriate training in power system protection was recognised in the early 1960s with t

  15. STEP electronic system design

    Science.gov (United States)

    Couch, R. H.; Johnson, J. W.

    1984-01-01

    The STEP electronic system design is discussed. The purpose of the design is outlined. The electronic system design is summarized and it is found that: an effective conceptual system design is developed; the design represents a unique set of capabilities; makes efficient use of available orbiter resources; the system capabilities exceed identified potential experiment needs.

  16. Nonlinear Hamiltonian systems

    DEFF Research Database (Denmark)

    Jørgensen, Michael Finn

    1995-01-01

    It is generally very difficult to solve nonlinear systems, and such systems often possess chaotic solutions. In the rare event that a system is completely solvable, it is said to integrable. Such systems never have chaotic solutions. Using the Inverse Scattering Transform Method (ISTM) two...

  17. Product Service Systems

    DEFF Research Database (Denmark)

    Departing from Product Development models based on physical artefacts. Moving towards integrated Product Development and System Operations models suited Product/Service-systems......Departing from Product Development models based on physical artefacts. Moving towards integrated Product Development and System Operations models suited Product/Service-systems...

  18. Medical imaging systems

    Science.gov (United States)

    Frangioni, John V

    2013-06-25

    A medical imaging system provides simultaneous rendering of visible light and diagnostic or functional images. The system may be portable, and may include adapters for connecting various light sources and cameras in open surgical environments or laparascopic or endoscopic environments. A user interface provides control over the functionality of the integrated imaging system. In one embodiment, the system provides a tool for surgical pathology.

  19. Measuring Systemic Risk

    DEFF Research Database (Denmark)

    Acharya, Viral V.; Heje Pedersen, Lasse; Philippon, Thomas

    We present a simple model of systemic risk and we show that each financial institution's contribution to systemic risk can be measured as its systemic expected shortfall (SES), i.e., its propensity to be undercapitalized when the system as a whole is undercapitalized. SES increases...

  20. Universal Index System

    Science.gov (United States)

    Kelley, Steve; Roussopoulos, Nick; Sellis, Timos; Wallace, Sarah

    1993-01-01

    The Universal Index System (UIS) is an index management system that uses a uniform interface to solve the heterogeneity problem among database management systems. UIS provides an easy-to-use common interface to access all underlying data, but also allows different underlying database management systems, storage representations, and access methods.

  1. Hybrid intelligent engineering systems

    CERN Document Server

    Jain, L C; Adelaide, Australia University of

    1997-01-01

    This book on hybrid intelligent engineering systems is unique, in the sense that it presents the integration of expert systems, neural networks, fuzzy systems, genetic algorithms, and chaos engineering. It shows that these new techniques enhance the capabilities of one another. A number of hybrid systems for solving engineering problems are presented.

  2. Central Dental Evacuation Systems.

    Science.gov (United States)

    1982-05-01

    20 High-Vacuum Oral Evacuation System (HIVAC) for Oral Surgery, Periodontics, and Endodontics Treatment Rooms..................... 20...handpiece. Inlets to this system are required throughout the dental facility for all disciplines of patient treatment where coolant and irrigation liquids...System (HIVAC) for Oral Surgery, Periodontics, and Endodontics Treatment Rooms The HIVAC system is designed to build and sustain high vacuum pressures

  3. CDMA systems capacity engineering

    CERN Document Server

    Kim, Kiseon

    2004-01-01

    This new hands-on resource tackles capacity planning and engineering issues that are crucial to optimizing wireless communication systems performance. Going beyond the system physical level and investigating CDMA system capacity at the service level, this volume is the single-source for engineering and analyzing systems capacity and resources.

  4. System Performance and Testing

    NARCIS (Netherlands)

    Frei, U.; Oversloot, H.

    2004-01-01

    This chapter compares and contrasts the system performance of two widely used solar thermal systems using testing and simulation programs. Solar thermal systems are used in many countries for heating domestically used water. In addition to the simple thermosiphon systems, better designed pumped syst

  5. Expert Systems: An Overview.

    Science.gov (United States)

    Adiga, Sadashiv

    1984-01-01

    Discusses: (1) the architecture of expert systems; (2) features that distinguish expert systems from conventional programs; (3) conditions necessary to select a particular application for the development of successful expert systems; (4) issues to be resolved when building expert systems; and (5) limitations. Examples of selected expert systems…

  6. Information Systems Security Audit

    Directory of Open Access Journals (Sweden)

    Gheorghe Popescu

    2007-12-01

    Full Text Available The article covers:Defining an information system; benefits obtained by introducing new information technologies; IT management;Defining prerequisites, analysis, design, implementation of IS; Information security management system; aspects regarding IS security policy; Conceptual model of a security system; Auditing information security systems and network infrastructure security.

  7. ERP–systems

    OpenAIRE

    Shustova I.

    2016-01-01

    In this work, we analyzed the existing ERP–systems of foreign and domestic manufacturers. Popular ERP–systems in the Republic of Belarus were considered. The leading ERP-systems in the domestic market and their features were described in detail. Finally, we described the steps that must be taken to select the most suitable ERP-system for a particular company.

  8. Type Systems for Bigraphs

    DEFF Research Database (Denmark)

    Elsborg, Ebbe; Hildebrandt, Thomas; Sangiorgi, Davide

    of controls and a set of reaction rules, collectively a bigraphical reactive system (BRS). Possible advantages of developing bigraphical type systems include: a deeper understanding of a type system itself and its properties; transfer of the type systems to the concrete family of calculi that the BRS models...

  9. Product Service Systems

    DEFF Research Database (Denmark)

    Departing from Product Development models based on physical artefacts. Moving towards integrated Product Development and System Operations models suited Product/Service-systems......Departing from Product Development models based on physical artefacts. Moving towards integrated Product Development and System Operations models suited Product/Service-systems...

  10. Information Systems Security Audit

    OpenAIRE

    Gheorghe Popescu; Veronica Adriana Popescu; Cristina Raluca Popescu

    2007-01-01

    The article covers:Defining an information system; benefits obtained by introducing new information technologies; IT management;Defining prerequisites, analysis, design, implementation of IS; Information security management system; aspects regarding IS security policy; Conceptual model of a security system; Auditing information security systems and network infrastructure security.

  11. ERP–systems

    OpenAIRE

    Shustova I.

    2016-01-01

    In this work, we analyzed the existing ERP–systems of foreign and domestic manufacturers. Popular ERP–systems in the Republic of Belarus were considered. The leading ERP-systems in the domestic market and their features were described in detail. Finally, we described the steps that must be taken to select the most suitable ERP-system for a particular company.

  12. On generalized Volterra systems

    Science.gov (United States)

    Charalambides, S. A.; Damianou, P. A.; Evripidou, C. A.

    2015-01-01

    We construct a large family of evidently integrable Hamiltonian systems which are generalizations of the KM system. The algorithm uses the root system of a complex simple Lie algebra. The Hamiltonian vector field is homogeneous cubic but in a number of cases a simple change of variables transforms such a system to a quadratic Lotka-Volterra system. We present in detail all such systems in the cases of A3, A4 and we also give some examples from higher dimensions. We classify all possible Lotka-Volterra systems that arise via this algorithm in the An case.

  13. Multiobjective Collaborative Optimization of Systems of Systems

    Science.gov (United States)

    2005-06-01

    operationally independent. (System-ysem 1)..y Design ,I ’"esignReqm ts ... .em (Sy stem 1) S stems F S Funcion Overlap Reqmts...te m...284. Maier, M.W. & Rechtin, E. (2002). The art of systems architecting. (2nd ed.). Boca Raton, FL: CRC Press LLC. Marglin, S. (1967). Public

  14. The Solar System as an Exoplanetary System

    CERN Document Server

    Martin, Rebecca G

    2015-01-01

    With the availability of considerably more data, we revisit the question of how special our Solar System is, compared to observed exoplanetary systems. To this goal, we employ a mathematical transformation that allows for a meaningful, statistical comparison. We find that the masses and densities of the giant planets in our Solar System are very typical, as is the age of the Solar System. While the orbital location of Jupiter is somewhat of an outlier, this is most likely due to strong selection effects towards short-period planets. The eccentricities of the planets in our Solar System are relatively small compared to those in observed exosolar systems, but still consistent with the expectations for an 8-planet system (and could, in addition, reflect a selection bias towards high-eccentricity planets). The two characteristics of the Solar System that we find to be most special are the lack of super-Earths with orbital periods of days to months and the general lack of planets inside of the orbital radius of Me...

  15. Variable Structure Systems and Systems Zeros

    OpenAIRE

    El-Ghezawi, O.M.E.; S. A. Billings; Zinober, A.S.I.

    1981-01-01

    The analysis of variable structure systems in the sliding mode yields the concept of equivalent control which leads naturally to a new method for determining the zeros and zero directions of linear multivariable systems. The analysis presented is conceptually easy and computationally attractive.

  16. Applications of membrane systems in distributed systems

    Institute of Scientific and Technical Information of China (English)

    Aneta Binder; Rudolf Freund; Georg Lojka; Marion Oswald

    2007-01-01

    Based on the biological model of cell-to-cell communication proposed by A. Rustom et al. (Science, 2004, 303: 1007-1010), we investigate the possibilities to apply P systems with dynamic channels transporting membrane vesicles for describing processes in distributed systems.

  17. Performance, Performance System, and High Performance System

    Science.gov (United States)

    Jang, Hwan Young

    2009-01-01

    This article proposes needed transitions in the field of human performance technology. The following three transitions are discussed: transitioning from training to performance, transitioning from performance to performance system, and transitioning from learning organization to high performance system. A proposed framework that comprises…

  18. [Universal coaxial anesthetic system].

    Science.gov (United States)

    Ungerer, M J; le Roux, F P

    1978-02-25

    A true universal co-axial anaesthetic system has been designed. This system may be used either as a Mapleson A circuit during spontaneous ventilation or as a Mapleson D circuit during controlled ventilation. Conversion to either system may be conveniently carried out by interchanging the pop-off valve and fresh gas inlet, without disconnecting the system from the patient. Resistance to flow of both tubes has been measured and was found to be within acceptable limits. The efficiency of this system in a Mapleson A arrangement was compared with that of a conventional Magill circuit during spontaneous breathing in 2 conscious volunteers. It was shown that no significant difference exists between these systems eith regard to rebreathing, and that the universal co-axial system may be used as efficiently and economically as the Magill circuit during spontaneous ventilation. The co-axial system can be easily connected to a circle system, combining the advantages of the two systems.

  19. Dynamical system synchronization

    CERN Document Server

    Luo, Albert C J

    2013-01-01

    Dynamical System Synchronization (DSS) meticulously presents for the first time the theory of dynamical systems synchronization based on the local singularity theory of discontinuous dynamical systems. The book details the sufficient and necessary conditions for dynamical systems synchronizations, through extensive mathematical expression. Techniques for engineering implementation of DSS are clearly presented compared with the existing techniques.  This book also:  Presents novel concepts and methods for dynamical system synchronization Extends beyond the Lyapunov theory for dynamical system synchronization Introduces companion and synchronization of discrete dynamical systems Includes local singularity theory for discontinuous dynamical systems Covers the invariant domains of synchronization Features more than 75 illustrations Dynamical System Synchronization is an ideal book for those interested in better understanding new concepts and methodology for dynamical system synchronization, local singularity...

  20. Intrusion Detection System: Security Monitoring System

    Directory of Open Access Journals (Sweden)

    ShabnamNoorani,

    2015-10-01

    Full Text Available An intrusion detection system (IDS is an ad hoc security solution to protect flawed computer systems. It works like a burglar alarm that goes off if someone tampers with or manages to get past other security mechanisms such as authentication mechanisms and firewalls. An Intrusion Detection System (IDS is a device or a software application that monitors network or system activities for malicious activities or policy violations and produces reports to a management station.Intrusion Detection System (IDS has been used as a vital instrument in defending the network from this malicious or abnormal activity..In this paper we are comparing host based and network based IDS and various types of attacks possible on IDS.

  1. Measuring Systemic Risk

    DEFF Research Database (Denmark)

    Acharya, Viral V.; Heje Pedersen, Lasse; Philippon, Thomas

    2017-01-01

    We present an economic model of systemic risk in which undercapitalization of the financial sector as a whole is assumed to harm the real economy, leading to a systemic risk externality. Each financial institution’s contribution to systemic risk can be measured as its systemic expected shortfall...... of components of SES to predict emerging systemic risk during the financial crisis of 2007–2009....

  2. Photovoltaic systems and applications

    Energy Technology Data Exchange (ETDEWEB)

    1982-01-01

    Abstracts are given of presentations given at a project review meeting held at Albuquerque, NM. The proceedings cover the past accomplishments and current activities of the Photovoltaic Systems Research, Balance-of-System Technology Development and System Application Experiments Projects at Sandia National Laboratories. The status of intermediate system application experiments and residential system analysis is emphasized. Some discussion of the future of the Photovoltaic Program in general, and the Sandia projects in particular is also presented.

  3. HYBRID VEHICLE CONTROL SYSTEM

    Directory of Open Access Journals (Sweden)

    V. Dvadnenko

    2016-06-01

    Full Text Available The hybrid vehicle control system includes a start–stop system for an internal combustion engine. The system works in a hybrid mode and normal vehicle operation. To simplify the start–stop system, there were user new possibilities of a hybrid car, which appeared after the conversion. Results of the circuit design of the proposed system of basic blocks are analyzed.

  4. Systems Theory and Systems Approach to Leadership

    Directory of Open Access Journals (Sweden)

    Dr.Sc. Berim Ramosaj

    2014-06-01

    Full Text Available Systems theory is product of the efforts of many researchers to create an intermediate field of coexistence of all sciences. If not for anything else, because of the magnitude that the use of systemic thinking and systemic approach has taken, it has become undisputed among the theories. Systems theory not only provides a glossary of terms with which researchers from different fields can be understood, but provides a framework for the presentation and interpretation of phenomena and realities. This paper addresses a systematic approach to leadership, as an attempt to dredge leadership and systems theory literature to find the meeting point. Systems approach is not an approach to leadership in terms of a manner of leader’s work, but it’s the leader's determination to factorize in his leadership the external environment and relationships with and among elements. Leader without followers is unable to exercise his leadership and to ensure their conviction he should provide a system, a structure, a purpose, despite the alternative chaos. Systems approach clarifies the thought on the complexity and dynamism of the environment and provides a framework for building ideas. If the general system theory is the skeleton of science (Boulding: 1956, this article aims to replenish it with leadership muscles by prominent authors who have written on systems theory and leadership, as well as through original ideas. In this work analytical methods were used (by analyzing approaches individually as well as synthetic methods (by assaying individual approaches in context of entirety. The work is a critical review of literature as well as a deductive analysis mingled with models proposed by authors through inductive analysis. Meta-analysis has been used to dissect the interaction and interdependence between leadership approaches.

  5. A distribution management system

    Energy Technology Data Exchange (ETDEWEB)

    Verho, P.; Jaerventausta, P.; Kaerenlampi, M.; Paulasaari, H. [Tampere Univ. of Technology (Finland); Partanen, J. [Lappeenranta Univ. of Technology (Finland)

    1996-12-31

    The development of new distribution automation applications is considerably wide nowadays. One of the most interesting areas is the development of a distribution management system (DMS) as an expansion of the traditional SCADA system. At the power transmission level such a system is called an energy management system (EMS). The idea of these expansions is to provide supporting tools for control center operators in system analysis and operation planning. The needed data for new applications is mainly available in some existing systems. Thus the computer systems of utilities must be integrated. The main data source for the new applications in the control center are the AM/FM/GIS (i.e. the network database system), the SCADA, and the customer information system (CIS). The new functions can be embedded in some existing computer system. This means a strong dependency on the vendor of the existing system. An alternative strategy is to develop an independent system which is integrated with other computer systems using well-defined interfaces. The latter approach makes it possible to use the new applications in various computer environments, having only a weak dependency on the vendors of the other systems. In the research project this alternative is preferred and used in developing an independent distribution management system

  6. A System of Systems Approach to the EU Energy System

    Science.gov (United States)

    Jess, Tom; Madani, Kaveh; Mahlooji, Maral; Ristic, Bora

    2016-04-01

    Around the world, measures to prevent dangerous climate change are being adopted and may change energy systems fundamentally. The European Union (EU) is committed to reducing greenhouse gas emission by 20% by 2020 and by 80-95% by 2050. In order to achieve this, EU member states aim to increase the share of renewables in the energy mix to 20% by 2020. This commitment comes as part of a series of other aims, principles, and policies to reform the EU's energy system. Cost-efficiency in the emissions reductions measures as well as strategic goals under the Resource Efficient Europe flagship initiative which would include a more prudent approach to other natural resources such as water and land. Using the "System of Systems Approach", as from Hadian and Madani (2015), energy sources' Relative Aggregate Footprints (RAF) in the EU are evaluated. RAF aggregates across four criteria: carbon footprint, water footprint, land footprint, and economic cost. The four criteria are weighted by resource availability across the EU and for each Member State. This provides an evaluation of the overall resource use efficiency of the EU's energy portfolio and gives insight into the differences in the desirability of energy sources across Member States. Broadly, nuclear, onshore wind, and geothermal are most desirable under equal criteria weights and EU average weighting introduces only small changes in the relative performance of only few technologies. The member state specific weightings show that most countries have similar energy technology preferences. However, the UK deviates most strongly from the average, with an even stronger preference for nuclear and coal. Sweden, Malta and Finland also deviate from the typical preferences indicating the complexity in play in reforming the EU energy system. Reference Hadian S, Madani K (2015) A System of Systems Approach to Energy Sustainability Assessment: Are All Renewables Really Green? Ecological Indicators, 52, 194-206.

  7. Modeling Power Systems as Complex Adaptive Systems

    Energy Technology Data Exchange (ETDEWEB)

    Chassin, David P.; Malard, Joel M.; Posse, Christian; Gangopadhyaya, Asim; Lu, Ning; Katipamula, Srinivas; Mallow, J V.

    2004-12-30

    Physical analogs have shown considerable promise for understanding the behavior of complex adaptive systems, including macroeconomics, biological systems, social networks, and electric power markets. Many of today's most challenging technical and policy questions can be reduced to a distributed economic control problem. Indeed, economically based control of large-scale systems is founded on the conjecture that the price-based regulation (e.g., auctions, markets) results in an optimal allocation of resources and emergent optimal system control. This report explores the state-of-the-art physical analogs for understanding the behavior of some econophysical systems and deriving stable and robust control strategies for using them. We review and discuss applications of some analytic methods based on a thermodynamic metaphor, according to which the interplay between system entropy and conservation laws gives rise to intuitive and governing global properties of complex systems that cannot be otherwise understood. We apply these methods to the question of how power markets can be expected to behave under a variety of conditions.

  8. Intelligent systems technology infrastructure for integrated systems

    Science.gov (United States)

    Lum, Henry

    1991-01-01

    A system infrastructure must be properly designed and integrated from the conceptual development phase to accommodate evolutionary intelligent technologies. Several technology development activities were identified that may have application to rendezvous and capture systems. Optical correlators in conjunction with fuzzy logic control might be used for the identification, tracking, and capture of either cooperative or non-cooperative targets without the intensive computational requirements associated with vision processing. A hybrid digital/analog system was developed and tested with a robotic arm. An aircraft refueling application demonstration is planned within two years. Initially this demonstration will be ground based with a follow-on air based demonstration. System dependability measurement and modeling techniques are being developed for fault management applications. This involves usage of incremental solution/evaluation techniques and modularized systems to facilitate reuse and to take advantage of natural partitions in system models. Though not yet commercially available and currently subject to accuracy limitations, technology is being developed to perform optical matrix operations to enhance computational speed. Optical terrain recognition using camera image sequencing processed with optical correlators is being developed to determine position and velocity in support of lander guidance. The system is planned for testing in conjunction with Dryden Flight Research Facility. Advanced architecture technology is defining open architecture design constraints, test bed concepts (processors, multiple hardware/software and multi-dimensional user support, knowledge/tool sharing infrastructure), and software engineering interface issues.

  9. Micro Information Systems

    DEFF Research Database (Denmark)

    Ulslev Pedersen, Rasmus; Kühn Pedersen, Mogens

    2014-01-01

    such as medical and manufacturing. These new sensor applications have implications for information systems (IS) and, the authors visualize this new class of information systems as fractals growing from an established class of systems; namely that of information systems (IS). The identified applications...... and implications are used as an empirical basis for creating a model for these small new information systems. Such sensor systems are called embedded systems in the technical sciences, and the authors want to couple it with general IS. They call the merger of these two important research areas (IS and embedded...... systems) for micro information systems (micro-IS). It is intended as a new research field within IS research. An initial framework model is established, which seeks to capture both the possibilities and constraints of this new paradigm, while looking simultaneously at the fundamental IS and ICT aspects...

  10. Rover waste assay system

    Energy Technology Data Exchange (ETDEWEB)

    Akers, D.W.; Stoots, C.M.; Kraft, N.C.; Marts, D.J. [Idaho National Engineering Lab., Idaho Falls, ID (United States)

    1997-11-01

    The Rover Waste Assay System (RWAS) is a nondestructive assay system designed for the rapid assay of highly-enriched {sup 235}U contaminated piping, tank sections, and debris from the Rover nuclear rocket fuel processing facility at the Idaho Chemical Processing Plant. A scanning system translates a NaI(Tl) detector/collimator system over the structural components where both relative and calibrated measurements for {sup 137}Cs are made. Uranium-235 concentrations are in operation and is sufficiently automated that most functions are performed by the computer system. These functions include system calibration, problem identification, collimator control, data analysis, and reporting. Calibration of the system was done through a combination of measurements on calibration standards and benchmarked modeling. A description of the system is presented along with the methods and uncertainties associated with the calibration and analysis of the system for components from the Rover facility. 4 refs., 2 figs., 4 tabs.

  11. Enhanced nurse call systems.

    Science.gov (United States)

    2001-04-01

    This Evaluation focuses on high-end computerized nurse call systems--what we call enhanced systems. These are highly flexible systems that incorporate microprocessor and communications technologies to expand the capabilities of the nurse call function. Enhanced systems, which vary in configuration from one installation to the next, typically consist of a basic system that provides standard nurse call functionality and a combination of additional enhancements that provide the added functionality the facility desires. In this study, we examine the features that distinguish enhanced nurse call systems from nonenhanced systems, focusing on their application and benefit to healthcare facilities. We evaluated seven systems to determine how well they help (1) improve patient care, as well as increase satisfaction with the care provided, and (2) improve caregiver efficiency, as well as increase satisfaction with the work environment. We found that all systems meet these objectives, but not all systems perform equally well for all implementations. Our ratings will help facilities identify those systems that offer the most effective features for their intended use. The study also includes a Technology Management Guide to help readers (1) determine whether they'll benefit from the capabilities offered by enhanced systems and (2) target a system for purchase and equip the system for optimum performance and cost-effective operation.

  12. Nonlinearity of colloid systems oxyhydrate systems

    CERN Document Server

    Sucharev, Yuri I

    2008-01-01

    The present monograph is the first systematic study of the non-linear characteristic of gel oxy-hydrate systems involving d- and f- elements. These are the oxyhydrates of rare-earth elements and oxides - hydroxides of d- elements (zirconium, niobium, titanium, etc.) The non-linearity of these gel systems introduces fundamental peculiarities into their structure and, consequently, their properties. The polymer-conformational diversity of energetically congenial gel fragments, which continu-ously transform under the effect of, for instance, system dissipation heat, is central to the au-thor's hy

  13. Embedded systems handbook networked embedded systems

    CERN Document Server

    Zurawski, Richard

    2009-01-01

    Considered a standard industry resource, the Embedded Systems Handbook provided researchers and technicians with the authoritative information needed to launch a wealth of diverse applications, including those in automotive electronics, industrial automated systems, and building automation and control. Now a new resource is required to report on current developments and provide a technical reference for those looking to move the field forward yet again. Divided into two volumes to accommodate this growth, the Embedded Systems Handbook, Second Edition presents a comprehensive view on this area

  14. Generalized L systems

    Institute of Scientific and Technical Information of China (English)

    陆汝钤; 张文妍

    2002-01-01

    This paper proposes the concept of generalized L systems, GL systems for short, which can describe asynchronized concurrent phenomena. We have proved that the GL systems are proper extensions of the traditional L systems. We have also defined a classification of GL systems and proved a sufficient and necessary condition for the equivalence of two subclasses of GL systems: two quivalent, iff k = j and there exists a common divisor g of all mr and a common divisor h of all ni such that i: mi/g = ni/h.

  15. Cooperating systems: Layered MAS

    Science.gov (United States)

    Rochowiak, Daniel

    1990-01-01

    Distributed intelligent systems can be distinguished by the models that they use. The model developed focuses on layered multiagent system conceived of as a bureaucracy in which a distributed data base serves as a central means of communication. The various generic bureaus of such a system is described and a basic vocabulary for such systems is presented. In presenting the bureaus and vocabularies, special attention is given to the sorts of reasonings that are appropriate. A bureaucratic model has a hierarchy of master system and work group that organizes E agents and B agents. The master system provides the administrative services and support facilities for the work groups.

  16. Microelectronic systems 1 checkbook

    CERN Document Server

    Vears, R E

    2013-01-01

    Microelectronic Systems 1 Checkbook provides coverage of the Business and Technician Education Council level 1 unit in Microelectronic Systems. However, it can be regarded as a basic textbook in microelectronic systems for a much wider range of studies. Each topic considered in the text is presented in a way that assumes the reader has little prior knowledge of electronics. The aim of the book is to provide an introduction to the concept of systems, to differentiate analogue and digital systems, and to describe the nature of microprocessor-controlled systems. An introduction to programming is

  17. Metrics for Multiagent Systems

    Science.gov (United States)

    Lass, Robert N.; Sultanik, Evan A.; Regli, William C.

    A Multiagent System (MAS) is a software paradigm for building large scale intelligent distributed systems. Increasingly these systems are being deployed on handheld computing devices that rely on non-traditional communications mediums such as mobile ad hoc networks and satellite links. These systems present new challenges for computer scientists in describing system performance and analyzing competing systems. This chapter surveys existing metrics that can be used to describe MASs and related components. A framework for analyzing MASs is provided and an example of how this framework might be employed is given for the domain of distributed constraint reasoning.

  18. Introducing Systems Approaches

    Science.gov (United States)

    Reynolds, Martin; Holwell, Sue

    Systems Approaches to Managing Change brings together five systems approaches to managing complex issues, each having a proven track record of over 25 years. The five approaches are: System Dynamics (SD) developed originally in the late 1950s by Jay Forrester Viable Systems Model (VSM) developed originally in the late 1960s by Stafford Beer Strategic Options Development and Analysis (SODA: with cognitive mapping) developed originally in the 1970s by Colin Eden Soft Systems Methodology (SSM) developed originally in the 1970s by Peter Checkland Critical Systems Heuristics (CSH) developed originally in the late 1970s by Werner Ulrich

  19. Simulation of Polygeneration Systems

    Directory of Open Access Journals (Sweden)

    Francesco Calise

    2016-11-01

    Full Text Available This Special Issue aims at collecting the recent studies dealing with polygeneration systems, with a special focus on the possible integration of different technologies into a single system, able to convert one or multiple energy sources into energy services (electricity, heat and cooling and other useful products (e.g., desalinized water, hydrogen, glycerin, ammonia, etc.. Renewable sources (solar, wind, hydro, biomass and geothermal, as well as fossil fuels, feeding advanced energy systems such as fuel cells and cogeneration systems, are considered. Special attention is paid to control strategies and to the management of the systems in general. Studies including thermoeconomic analyses and system optimizations are presented.

  20. Continuous system modeling

    Science.gov (United States)

    Cellier, Francois E.

    1991-01-01

    A comprehensive and systematic introduction is presented for the concepts associated with 'modeling', involving the transition from a physical system down to an abstract description of that system in the form of a set of differential and/or difference equations, and basing its treatment of modeling on the mathematics of dynamical systems. Attention is given to the principles of passive electrical circuit modeling, planar mechanical systems modeling, hierarchical modular modeling of continuous systems, and bond-graph modeling. Also discussed are modeling in equilibrium thermodynamics, population dynamics, and system dynamics, inductive reasoning, artificial neural networks, and automated model synthesis.

  1. Smart SDHW systems

    DEFF Research Database (Denmark)

    Andersen, Elsa

    2000-01-01

    The aim of the project is to develop smart solar domestic hot water (SDHW) systems. A smart SDHW is a system in which the domestic water can bee heated both by solar collectors and by an auxiliary energy supply system. The auxiliary energy supply system heats up the hot-water tank from the top...... periods in a laboratory. Numeric models of the systems have been developed. The models are verified with measured temperatures and energy quantities. In order to verify the good test results in the laboratory two of the smart SDHW systems have been installed in practice. Measurements will bee carried out...

  2. Test System Impact on System Availability

    DEFF Research Database (Denmark)

    Pau, L. F.

    1987-01-01

    The specifications are presented for an imperfect automatic test system (ATS) (test frequency distribution, reliability, false alarm rate, nondetection rate) in order to account for the availability, readiness, mean time between unscheduled repairs (MTBUR), reliability, and maintenance of the sys......The specifications are presented for an imperfect automatic test system (ATS) (test frequency distribution, reliability, false alarm rate, nondetection rate) in order to account for the availability, readiness, mean time between unscheduled repairs (MTBUR), reliability, and maintenance...... of the system subject to monitoring and test. A time-dependent Markov model is presented, and applied in three cases, with examples of numerical results provided for preventive maintenance decisions, design of an automatic test system, buffer testing in computers, and data communications....

  3. Information system development activities and inquiring systems

    DEFF Research Database (Denmark)

    Carugati, Andrea

    2008-01-01

    This article presents a framework that maps information system development (ISD) activities on systems for the creation of knowledge. This work addresses the relevant and persisting problem of improving the chances of ISD success. The article builds upon previous research on knowledge aspects...... provides a new way to see the development of a system in terms of the knowledge created in the process. The main practical implication of the framework is that it improves the managers' ability to guide ISD activities as knowledge activities embedded in a knowledge process, a crucial element in development...... of ISD, abandoning the idea of a monolithic approach to knowledge and presenting a pluralistic approach based on the idea that different inquiring systems can support micro-level ISD activities. The article is divided into two parts. The first part presents the theoretical development of the framework...

  4. Information system development activities and inquiring systems

    DEFF Research Database (Denmark)

    Carugati, Andrea

    2008-01-01

    This article presents a framework that maps information system development (ISD) activities on systems for the creation of knowledge. This work addresses the relevant and persisting problem of improving the chances of ISD success. The article builds upon previous research on knowledge aspects...... provides a new way to see the development of a system in terms of the knowledge created in the process. The main practical implication of the framework is that it improves the managers' ability to guide ISD activities as knowledge activities embedded in a knowledge process, a crucial element in development...... of ISD, abandoning the idea of a monolithic approach to knowledge and presenting a pluralistic approach based on the idea that different inquiring systems can support micro-level ISD activities. The article is divided into two parts. The first part presents the theoretical development of the framework...

  5. Business System Planning Project System Requirements Specification

    Energy Technology Data Exchange (ETDEWEB)

    NELSON, R.E.

    2000-09-08

    The purpose of the Business Systems Planning Project System Requirements Specification (SRS) is to provide the outline and contents of the requirements for the CH2M HILL Hanford Group, Inc. (CHG) integrated business and technical information systems. The SRS will translate proposed objectives into the statement of the functions that are to be performed and data and information flows that they require. The requirements gathering methodology will use (1) facilitated group requirement sessions; (2) individual interviews; (3) surveys; and (4) document reviews. The requirements will be verified and validated through coordination of the technical requirement team and CHG Managers. The SRS document used the content and format specified in Lockheed Martin Services, Inc. Organization Standard Software Practices in conjunction with the Institute of Electrical and Electronics Engineers Standard 8340-1984 for Systems Requirements Documents.

  6. Water Fluoridation Reporting System (Public Water Systems)

    Data.gov (United States)

    U.S. Department of Health & Human Services — The Water Fluoridation Reporting System (WFRS) has been developed to provide tools to assist states in managing fluoridation programs. WFRS is designed to track all...

  7. System Information Distribution in Massive MIMO Systems

    OpenAIRE

    Sörman, Simon

    2016-01-01

    The 5th generation mobile telecommunication system (5G) is currently being specified and developed, with large expectations on throughput and efficiency. While 4G and more specifically LTE might constitute a basis of the design of the network, there are some parts that should be improved. One thing to improve is the static signalling that occurs very frequently in a 4G network, of which system information such as synchronization signals, detection of network frequencies, operators, configurat...

  8. EPICS system: system structure and user interface

    Energy Technology Data Exchange (ETDEWEB)

    West, R.E.; Bartlett, J.F.; Bobbitt, J.S.; Lahey, T.E.; Kramper, B.J.; MacKinnon, B.A.

    1984-02-01

    This paper present the user's view of and the general organization of the EPICS control system at Fermilab. Various subsystems of the EPICS control system are discussed. These include the user command language, software protection, the device database, remote computer interfaces, and several application utilities. This paper is related to two other papers on EPICS: an overview paper and a detailed implementation paper.

  9. Mathematical System Theory and System Modeling

    OpenAIRE

    1980-01-01

    Choosing models related effectively to the questions to be addressed is a central issue in the craft of systems analysis. Since the mathematical description the analyst chooses constrains the types of issues he candeal with, it is important for these models to be selected so as to yield limitations that are acceptable in view of the questions the systems analysis seeks to answer. In this paper, the author gives an overview of the central issues affecting the question of model choice. To ...

  10. SUBSURFACE EMPLACEMENT TRANSPORTATION SYSTEM

    Energy Technology Data Exchange (ETDEWEB)

    T. Wilson; R. Novotny

    1999-11-22

    The objective of this analysis is to identify issues and criteria that apply to the design of the Subsurface Emplacement Transportation System (SET). The SET consists of the track used by the waste package handling equipment, the conductors and related equipment used to supply electrical power to that equipment, and the instrumentation and controls used to monitor and operate those track and power supply systems. Major considerations of this analysis include: (1) Operational life of the SET; (2) Geometric constraints on the track layout; (3) Operating loads on the track; (4) Environmentally induced loads on the track; (5) Power supply (electrification) requirements; and (6) Instrumentation and control requirements. This analysis will provide the basis for development of the system description document (SDD) for the SET. This analysis also defines the interfaces that need to be considered in the design of the SET. These interfaces include, but are not limited to, the following: (1) Waste handling building; (2) Monitored Geologic Repository (MGR) surface site layout; (3) Waste Emplacement System (WES); (4) Waste Retrieval System (WRS); (5) Ground Control System (GCS); (6) Ex-Container System (XCS); (7) Subsurface Electrical Distribution System (SED); (8) MGR Operations Monitoring and Control System (OMC); (9) Subsurface Facility System (SFS); (10) Subsurface Fire Protection System (SFR); (11) Performance Confirmation Emplacement Drift Monitoring System (PCM); and (12) Backfill Emplacement System (BES).

  11. Business system: Sustainable development and anticipatory system

    Directory of Open Access Journals (Sweden)

    Vojko Potočan

    2002-01-01

    Full Text Available The existence and development of humankind depends mainly upon the co-ordinated operation of all areas and levels of human activity. However, in theory and in practice there is no model of operation, which would provide a harmonized and target oriented development. A partial solution is offered by sustainable development, which tries to define and carry out common goals of mankind with a harmonized implementation of human activities at all levels of its living and behaviour. Companies belong to central institutions of modern society which essentially co–create the sustainability of society. The company’s endeavour by simulation to prepare models of their goals concerning their internal and external environment. On the base of systemic treatment, we can define companies as business system, which can survive in a log-run only on the basis of sustainable development. The business system can also be supported by the application of the anticipatory systems. The anticipatory systems can be, in this sense, understood as an entity of the methodological approach, techniques and modes of work. Their characteristics have, a direct impact on the determination of goals, on the orientation of operation, and hence on the achievement of the business system results.

  12. Operating System for Runtime Reconfigurable Multiprocessor Systems

    Directory of Open Access Journals (Sweden)

    Diana Göhringer

    2011-01-01

    Full Text Available Operating systems traditionally handle the task scheduling of one or more application instances on processor-like hardware architectures. RAMPSoC, a novel runtime adaptive multiprocessor System-on-Chip, exploits the dynamic reconfiguration on FPGAs to generate, start and terminate hardware and software tasks. The hardware tasks have to be transferred to the reconfigurable hardware via a configuration access port. The software tasks can be loaded into the local memory of the respective IP core either via the configuration access port or via the on-chip communication infrastructure (e.g. a Network-on-Chip. Recent-series of Xilinx FPGAs, such as Virtex-5, provide two Internal Configuration Access Ports, which cannot be accessed simultaneously. To prevent conflicts, the access to these ports as well as the hardware resource management needs to be controlled, e.g. by a special-purpose operating system running on an embedded processor. For that purpose and to handle the relations between temporally and spatially scheduled operations, the novel approach of an operating system is of high importance. This special purpose operating system, called CAP-OS (Configuration Access Port-Operating System, which will be presented in this paper, supports the clients using the configuration port with the services of priority-based access scheduling, hardware task mapping and resource management.

  13. Integrated Reporting Information System -

    Data.gov (United States)

    Department of Transportation — The Integrated Reporting Information System (IRIS) is a flexible and scalable web-based system that supports post operational analysis and evaluation of the National...

  14. Levonorgestrel Intrauterine System

    Science.gov (United States)

    Levonorgestrel intrauterine system (Mirena, Skyla) is used to prevent pregnancy. The manufacturer states that Mirena brand intrauterine ... to use an intrauterine system to prevent pregnancy. Levonorgestrel is in a class of medications called hormonal ...

  15. Saturated Switching Systems

    CERN Document Server

    Benzaouia, Abdellah

    2012-01-01

    Saturated Switching Systems treats the problem of actuator saturation, inherent in all dynamical systems by using two approaches: positive invariance in which the controller is designed to work within a region of non-saturating linear behaviour; and saturation technique which allows saturation but guarantees asymptotic stability. The results obtained are extended from the linear systems in which they were first developed to switching systems with uncertainties, 2D switching systems, switching systems with Markovian jumping and switching systems of the Takagi-Sugeno type. The text represents a thoroughly referenced distillation of results obtained in this field during the last decade. The selected tool for analysis and design of stabilizing controllers is based on multiple Lyapunov functions and linear matrix inequalities. All the results are illustrated with numerical examples and figures many of them being modelled using MATLAB®. Saturated Switching Systems will be of interest to academic researchers in con...

  16. Central nervous system

    Science.gov (United States)

    The central nervous system is composed of the brain and spinal cord. Your brain and spinal cord serve as the main "processing center" for your entire nervous system. They control all the workings of your body.

  17. Visitor Registration System

    Data.gov (United States)

    US Agency for International Development — Visitor Registration System (VRS) streamlines visitor check-in and check-out process for expediting visitors into USAID. The system captures visitor information...

  18. Human Resource Accounting System

    Science.gov (United States)

    Cerullo, Michael J.

    1974-01-01

    Main objectives of human resource accounting systems are to satisfy the informational demands made by investors and by operating managers. The paper's main concern is with the internal uses of a human asset system. (Author)

  19. Geographical information systems

    DEFF Research Database (Denmark)

    Möller, Bernd

    2004-01-01

    The chapter gives an introduction to Geographical Information Systems (GIS) with particular focus on their application within environmental management.......The chapter gives an introduction to Geographical Information Systems (GIS) with particular focus on their application within environmental management....

  20. Systemic banking crises

    OpenAIRE

    O. Emre Ergungor; James B. Thomson

    2005-01-01

    Systemic banking crises can have devastating effects on the economies of developing or industrialized countries. This Policy Discussion Paper reviews the factors that weaken banking systems and make them more susceptible to crises.

  1. Inductive Monitoring System (IMS)

    Data.gov (United States)

    National Aeronautics and Space Administration — IMS: Inductive Monitoring System The Inductive Monitoring System (IMS) is a tool that uses a data mining technique called clustering to extract models of normal...

  2. Health System Measurement Project

    Data.gov (United States)

    U.S. Department of Health & Human Services — The Health System Measurement Project tracks government data on critical U.S. health system indicators. The website presents national trend data as well as detailed...

  3. Geographical information systems

    DEFF Research Database (Denmark)

    Möller, Bernd

    2004-01-01

    The chapter gives an introduction to Geographical Information Systems (GIS) with particular focus on their application within environmental management.......The chapter gives an introduction to Geographical Information Systems (GIS) with particular focus on their application within environmental management....

  4. Semiotic labelled deductive systems

    Energy Technology Data Exchange (ETDEWEB)

    Nossum, R.T. [Imperial College of Science, Technology and Medicine, London (United Kingdom)

    1996-12-31

    We review the class of Semiotic Models put forward by Pospelov, as well as the Labelled Deductive Systems developed by Gabbay, and construct an embedding of Semiotic Models into Labelled Deductive Systems.

  5. VT DSL Systems 2006

    Data.gov (United States)

    Vermont Center for Geographic Information — (Link to Metadata) The VT DSL Broadband System dataset (DSL2006) includes polygons depicting the extent of Vermont's DSL broadband system as of 12/31/2006. This data...

  6. Absorption heat pump system

    Science.gov (United States)

    Grossman, G.

    1982-06-16

    The efficiency of an absorption heat pump system is improved by conducting liquid from a second stage evaporator thereof to an auxiliary heat exchanger positioned downstream of a primary heat exchanger in the desorber of the system.

  7. Flight Systems Monitor Project

    Data.gov (United States)

    National Aeronautics and Space Administration — This SBIR Phase I project will develop the Flight System Monitor which will use non-intrusive electrical monitoring (NEMO). The electronic system health of...

  8. Generalized adjoint systems

    CERN Document Server

    Serakos, Demetrios

    2015-01-01

    This book defines and develops the generalized adjoint of an input-output system. It is the result of a theoretical development and examination of the generalized adjoint concept and the conditions under which systems analysis using adjoints is valid. Results developed in this book are useful aids for the analysis and modeling of physical systems, including the development of guidance and control algorithms and in developing simulations. The generalized adjoint system is defined and is patterned similarly to adjoints of bounded linear transformations. Next the elementary properties of the generalized adjoint system are derived. For a space of input-output systems, a generalized adjoint map from this space of systems to the space of generalized adjoints is defined. Then properties of the generalized adjoint map are derived. Afterward the author demonstrates that the inverse of an input-output system may be represented in terms of the generalized adjoint. The use of generalized adjoints to determine bounds for ...

  9. Handbook of systems toxicology

    National Research Council Canada - National Science Library

    Casciano, Daniel A; Sahu, Saura C

    2011-01-01

    "In the first handbook to comprehensively cover the emerging area of systems toxicology, the Handbook of Systems Toxicology provides an authoritative compilation of up-to-date developments presented...

  10. Gleason grading system

    Science.gov (United States)

    ... medlineplus.gov/ency/patientinstructions/000920.htm Gleason grading system To use the sharing features on this page, ... score of between 5 and 7. Gleason Grading System Sometimes, it can be hard to predict how ...

  11. Interstitial hydrogen storage system

    Energy Technology Data Exchange (ETDEWEB)

    Gell, H.A.

    1980-09-30

    A metal hydride fuel system is described that incorporates a plurality of storage elements that may be individually replaced to provide a hydrogen fuel system for combustion engines having a capability of partial refueling is presented.

  12. Information retrieval system

    Science.gov (United States)

    Berg, R. F.; Holcomb, J. E.; Kelroy, E. A.; Levine, D. A.; Mee, C., III

    1970-01-01

    Generalized information storage and retrieval system capable of generating and maintaining a file, gathering statistics, sorting output, and generating final reports for output is reviewed. File generation and file maintenance programs written for the system are general purpose routines.

  13. Contingent Information Systems Development

    NARCIS (Netherlands)

    van Slooten, C.; Schoonhoven, Bram

    1996-01-01

    Situated approaches based on project contingencies are becoming more and more an important research topic for information systems development organizations. The Information Services Organization, which was investigated, has recognized that it should tune its systems development approaches to the

  14. Silver recovery system data

    Energy Technology Data Exchange (ETDEWEB)

    Boulineau, B.

    1991-08-26

    In August of 1990 the Savannah River Site Photography Group began testing on a different type of silver recovery system. This paper describes the baseline study and the different phases of installation and testing of the system.

  15. Drinking Water Distribution Systems

    Science.gov (United States)

    Learn about an overview of drinking water distribution systems, the factors that degrade water quality in the distribution system, assessments of risk, future research about these risks, and how to reduce cross-connection control risk.

  16. Renewable Energy Tracking Systems

    Science.gov (United States)

    Renewable energy generation ownership can be accounted through tracking systems. Tracking systems are highly automated, contain specific information about each MWh, and are accessible over the internet to market participants.

  17. Cross Disciplinary Biometric Systems

    CERN Document Server

    Liu, Chengjun

    2012-01-01

    Cross disciplinary biometric systems help boost the performance of the conventional systems. Not only is the recognition accuracy significantly improved, but also the robustness of the systems is greatly enhanced in the challenging environments, such as varying illumination conditions. By leveraging the cross disciplinary technologies, face recognition systems, fingerprint recognition systems, iris recognition systems, as well as image search systems all benefit in terms of recognition performance.  Take face recognition for an example, which is not only the most natural way human beings recognize the identity of each other, but also the least privacy-intrusive means because people show their face publicly every day. Face recognition systems display superb performance when they capitalize on the innovative ideas across color science, mathematics, and computer science (e.g., pattern recognition, machine learning, and image processing). The novel ideas lead to the development of new color models and effective ...

  18. Prosthetic Knee Systems

    Science.gov (United States)

    ... Facebook Google Bookmarks Technorati Yahoo MyWeb Prosthetic Knee Systems Translated into plain language by Helen Osborne of ... Consulting Original article by Bill Dupes Prosthetic knee systems are among the most complex of all components. ...

  19. BioSystems

    Data.gov (United States)

    U.S. Department of Health & Human Services — The NCBI BioSystems Database provides integrated access to biological systems and their component genes, proteins, and small molecules, as well as literature...

  20. Immune System and Disorders

    Science.gov (United States)

    Your immune system is a complex network of cells, tissues, and organs that work together to defend against germs. It ... t, to find and destroy them. If your immune system cannot do its job, the results can be ...

  1. Multiple System Atrophy (MSA)

    Science.gov (United States)

    Diseases and Conditions Multiple system atrophy (MSA) By Mayo Clinic Staff Multiple system atrophy (MSA) is a rare neurological disorder that impairs your body's involuntary (autonomic) functions, including blood ...

  2. Designing automatic resupply systems.

    Science.gov (United States)

    Harding, M L

    1999-02-01

    This article outlines the process for designing and implementing autoresupply systems. The planning process includes determination of goals and appropriate participation. Different types of autoresupply mechanisms include kanban, breadman, consignment, systems contracts, and direct shipping from an MRP schedule.

  3. Voluntary Service System (VSS)

    Data.gov (United States)

    Department of Veterans Affairs — Voluntary Service System (VSS) is a national-level application which replaced the site-based Voluntary Timekeeping System (VTK). VTK was used for many years at the...

  4. Audit Management System

    CERN Document Server

    Alconada, Federico

    2015-01-01

    In the need of renewing their system, the Internal Audit department has given a proposal for building a new one. Taking into consideration the problems of their system they elaborated a requirement's list with the functionalities and features they were expecting from the new management system. This new system would be primarily for the use of the Internal Audit staff but it would also support the follow-up of internal audit recommendations by potentially all CERN staff members.

  5. CCD digital radiography system

    Science.gov (United States)

    Wang, Yi; Kang, Xi; Li, Yuanjing; Cheng, Jianping; Hou, Yafei; Han, Haiwei

    2009-07-01

    Amorphous silicon flat-panel detector is the mainstream used in digital radiography (DR) system. In latest years, scintillation screen coupled with CCD DR is becoming more popular in hospital. Compared with traditional amorphous silicon DR, CCD-DR has better spatial resolution and has little radiation damage. It is inexpensive and can be operated easily. In this paper, A kind of CCD based DR system is developed. We describe the construction of the system, the system performances and experiment results.

  6. System programming languages

    OpenAIRE

    ŠMIT, MATEJ

    2016-01-01

    Most operating systems are written in the C programming language. Similar is with system software, for example, device drivers, compilers, debuggers, disk checkers, etc. Recently some new programming languages emerged, which are supposed to be suitable for system programming. In this thesis we present programming languages D, Go, Nim and Rust. We defined the criteria which are important for deciding whether programming language is suitable for system programming. We examine programming langua...

  7. Rainfed intensive crop systems

    DEFF Research Database (Denmark)

    Olesen, Jørgen E

    2014-01-01

    This chapter focuses on the importance of intensive cropping systems in contributing to the world supply of food and feed. The impact of climate change on intensive crop production systems is also discussed.......This chapter focuses on the importance of intensive cropping systems in contributing to the world supply of food and feed. The impact of climate change on intensive crop production systems is also discussed....

  8. Computational Systems Chemical Biology

    OpenAIRE

    Oprea, Tudor I.; Elebeoba E. May; Leitão, Andrei; Tropsha, Alexander

    2011-01-01

    There is a critical need for improving the level of chemistry awareness in systems biology. The data and information related to modulation of genes and proteins by small molecules continue to accumulate at the same time as simulation tools in systems biology and whole body physiologically-based pharmacokinetics (PBPK) continue to evolve. We called this emerging area at the interface between chemical biology and systems biology systems chemical biology, SCB (Oprea et al., 2007).

  9. Linear system theory

    Science.gov (United States)

    Callier, Frank M.; Desoer, Charles A.

    1991-01-01

    The aim of this book is to provide a systematic and rigorous access to the main topics of linear state-space system theory in both the continuous-time case and the discrete-time case; and the I/O description of linear systems. The main thrusts of the work are the analysis of system descriptions and derivations of their properties, LQ-optimal control, state feedback and state estimation, and MIMO unity-feedback systems.

  10. Logistics Management Information System

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    The logistics information is the logistics manageme nt 's inevitable request. The paper introduces several kinds of logistics informat ion system and their functions in the logistics management, such as the warehous e management system (WMS) in the delivery center, the control system for transpo rtation and delivery, the supply chain management (SCM), the optimization of th e logistics system, etc. In the author's opinion, the development of logistics could been divided into four phases. And the logistic...

  11. Space power systems technology

    Science.gov (United States)

    Coulman, George A.

    1994-01-01

    Reported here is a series of studies which examine several potential catalysts and electrodes for some fuel cell systems, some materials for space applications, and mathematical modeling and performance predictions for some solid oxide fuel cells and electrolyzers. The fuel cell systems have a potential for terrestrial applications in addition to solar energy conversion in space applications. Catalysts and electrodes for phosphoric acid fuel cell systems and for polymer electrolyte membrane (PEM) fuel cell and electrolyzer systems were examined.

  12. Computer system identification

    OpenAIRE

    Lesjak, Borut

    2008-01-01

    The concept of computer system identity in computer science bears just as much importance as does the identity of an individual in a human society. Nevertheless, the identity of a computer system is incomparably harder to determine, because there is no standard system of identification we could use and, moreover, a computer system during its life-time is quite indefinite, since all of its regular and necessary hardware and software upgrades soon make it almost unrecognizable: after a number o...

  13. Open quantum system identification

    CERN Document Server

    Schirmer, Sophie G; Zhou, Weiwei; Gong, Erling; Zhang, Ming

    2012-01-01

    Engineering quantum systems offers great opportunities both technologically and scientifically for communication, computation, and simulation. The construction and operation of large scale quantum information devices presents a grand challenge and a major issue is the effective control of coherent dynamics. This is often in the presence of decoherence which further complicates the task of determining the behaviour of the system. Here, we show how to determine open system Markovian dynamics of a quantum system with restricted initialisation and partial output state information.

  14. Quantum System Identification

    OpenAIRE

    Burgarth, Daniel; Yuasa, Kazuya

    2011-01-01

    The aim of quantum system identification is to estimate the ingredients inside a black box, in which some quantum-mechanical unitary process takes place, by just looking at its input-output behavior. Here we establish a basic and general framework for quantum system identification, that allows us to classify how much knowledge about the quantum system is attainable, in principle, from a given experimental setup. Prior knowledge on some elements of the black box helps the system identification...

  15. Content management systems (CMS)

    OpenAIRE

    Oriahi, Harrison

    2014-01-01

    This thesis describes the three most common and widely used content management systems (CMS) used to power several millions of business websites on the internet. Since there are many other content managements systems online, this report provides some helpful guides on each of the three most used systems and the web design projects that each of them maybe most suitable. There are plenty of options when it comes to selecting a content management system for a development project and this the...

  16. Human Resource Management System

    OpenAIRE

    Navaz, A. S. Syed; Fiaz, A. S. Syed; Prabhadevi, C.; V.Sangeetha; Gopalakrishnan,S.

    2013-01-01

    The paper titled HUMAN RESOURCE MANAGEMENT SYSTEM is basically concerned with managing the Administrator of HUMAN RESOURCE Department in a company. A Human Resource Management System, refers to the systems and processes at the intersection between human resource management and information technology. It merges HRM as a discipline and in particular its basic HR activities and processes with the information technology field, whereas the programming of data processing systems evolved into standa...

  17. Electric Vehicle Propulsion System

    OpenAIRE

    2014-01-01

    Electric vehicles are being considered as one of the pillar of eco-friendly solutions to overcome the problem of global pollution and radiations due to greenhouse gases. Present thesis work reports the improvement in overall performance of the propulsion system of an electric vehicle by improving autonomy and torque-speed characteristic. Electric vehicle propulsion system consists of supply and traction system, and are coordinated by the monitoring & control system. Case of light electric veh...

  18. The DISCUS Hardware System,

    Science.gov (United States)

    1982-07-01

    it physically impossible for one processor to access another’s local program or workspace. It should be noted that the system - generator should handle...this gateway would be complex and how it would be used and linked to the system generator would also be difficult. Because of this it worth asking...which is by no means trivial to write, identified several faults in the system generator and operating system that would have otherwise been

  19. Hybrid Action Systems

    DEFF Research Database (Denmark)

    Ronkko, Mauno; Ravn, Anders P.

    1997-01-01

    a differential action, which allows differential equations as primitive actions. The extension allows us to model hybrid systems with both continuous and discrete behaviour. The main result of this paper is an extension of such a hybrid action system with parallel composition. The extension does not change...... the original meaning of the parallel composition, and therefore also the ordinary action systems can be composed in parallel with the hybrid action systems....

  20. Wireless power transfer system

    OpenAIRE

    Arai, Hiroyuki

    2012-01-01

    This paper presents a survey of recent wireless power transfer systems. The issue of wireless power transfer is to achieve a highly efficient system with small positioning errors of the facilities setting. Several theories have been presented to obtain precise system design. This paper presents a summary of design theory for short range power transfer systems and detailed formulations based on a circuit model and an array of infinitesimal dipoles. In addition to these theories, this paper in...

  1. Spacecraft Energy Storage Systems

    OpenAIRE

    Robinson, Wilf; Hanks, James; Spina, Len; Havenhill, Doug; Gisler, Gary; Ginter, Steve; Brault, Sharon

    1997-01-01

    Flywheel Energy Storage Systems represent an exciting alternative to traditional battery storage systems used to power satellites during periods of eclipse. The increasing demand for reliable communication and data access is driving explosive growth in the number of satellite systems being developed as well as their performance requirements. Power on orbit is the key to this performance, and batteries are becoming increasingly unattractive as an energy storage media. Flywheel systems offer ve...

  2. Unix operating system

    CERN Document Server

    Liu, Yukun; Guo, Liwei

    2011-01-01

    ""UNIX Operating System: The Development Tutorial via UNIX Kernel Services"" introduces the hierarchical structure, principles, applications, kernel, shells, development, and management of the UNIX operation systems multi-dimensionally and systematically. It clarifies the natural bond between physical UNIX implementation and general operating system and software engineering theories, and presents self-explanatory illustrations for readers to visualize and understand the obscure relationships and intangible processes in UNIX operating system. This book is intended for engineers and researchers

  3. Radiant Floor Cooling Systems

    DEFF Research Database (Denmark)

    Olesen, Bjarne W.

    2008-01-01

    In many countries, hydronic radiant floor systems are widely used for heating all types of buildings such as residential, churches, gymnasiums, hospitals, hangars, storage buildings, industrial buildings, and smaller offices. However, few systems are used for cooling.This article describes a floor...... cooling system that includes such considerations as thermal comfort of the occupants, which design parameters will influence the cooling capacity and how the system should be controlled. Examples of applications are presented....

  4. Lithium battery management system

    Science.gov (United States)

    Dougherty, Thomas J [Waukesha, WI

    2012-05-08

    Provided is a system for managing a lithium battery system having a plurality of cells. The battery system comprises a variable-resistance element electrically connected to a cell and located proximate a portion of the cell; and a device for determining, utilizing the variable-resistance element, whether the temperature of the cell has exceeded a predetermined threshold. A method of managing the temperature of a lithium battery system is also included.

  5. Collaborative Micropayment Systems

    NARCIS (Netherlands)

    Parhonyi, R.; Pras, Aiko; Quartel, Dick; Yim, C.H.

    Around the world many different micropayment systems are in use. Because of this variety, content providers and customers may rely on different systems. As a result, customers may be unable to buy content from providers using a different system. This paper proposes a novel approach that allows

  6. Controllability of Quantum Systems

    CERN Document Server

    Schirmer, S G; Solomon, A I

    2003-01-01

    An overview and synthesis of results and criteria for open-loop controllability of Hamiltonian quantum systems obtained using Lie group and Lie algebra techniques is presented. Negative results for open-loop controllability of dissipative systems are discussed, and the superiority of closed-loop (feedback) control for quantum systems is established.

  7. LOFAR Information System

    NARCIS (Netherlands)

    Begeman, K.; Belikov, A. N.; Boxhoorn, D. R.; Dijkstra, F.; Holties, H.; Meyer-Zhao, Z.; Renting, G. A.; Valentijn, E. A.; Vriend, W. -J.

    2011-01-01

    In this paper, we present a newly designed and implemented scientific information system for the LOFAR Long Term Archive. It is a distributed multi-tier storage and data processing system that allows a number of users to process Petabytes of data. The LOFAR Information System is designed on the base

  8. The Quality System

    DEFF Research Database (Denmark)

    Brogaard Buus, Daniel; Eland, Morten Vestergaard; Lystlund, Rasmus

    2015-01-01

    In this article, we present our efforts to try to increase cohesiveness and connectivity between quests generated by a recreation of an existing procedural quest generation system, with an addition of a progressive tier system called Quality System. A study gave strong indications that the Quality...

  9. Endocrine System (For Parents)

    Science.gov (United States)

    ... of or replacing specific hormones can treat many endocrine disorders in children and adolescents, some of which include: ... System Your Child's Growth Female Reproductive System Activity: Endocrine System Word! Hormones Diabetes Center Thyroid Disorders Type 2 Diabetes: What Is It? Your Endocrine ...

  10. Flexible energy systems

    DEFF Research Database (Denmark)

    Lund, Henrik

    2003-01-01

    The paper discusses and analyses diffent national strategies and points out key changes in the energy system in order to achieve a system which can benefit from a high percentage of wind and CHP without having surplus production problems, introduced here as a flexible energy system....

  11. LED system reliability

    NARCIS (Netherlands)

    Driel, W.D. van; Yuan, C.A.; Koh, S.; Zhang, G.Q.

    2011-01-01

    This paper presents our effort to predict the system reliability of Solid State Lighting (SSL) applications. A SSL system is composed of a LED engine with micro-electronic driver(s) that supplies power to the optic design. Knowledge of system level reliability is not only a challenging scientific ex

  12. Imaging systems and applications.

    Science.gov (United States)

    Catrysse, Peter B; Imai, Francisco H; Linne von Berg, Dale C; Sheridan, John T

    2013-03-01

    Imaging systems have numerous applications in industrial, military, consumer, and medical settings. Assembling a complete imaging system requires the integration of optics, sensing, image processing, and display rendering. This issue features original research ranging from fundamental theories to novel imaging modalities and provides a systems perspective to imaging.

  13. Personal Food System Mapping

    Science.gov (United States)

    Wilsey, David; Dover, Sally

    2014-01-01

    Personal food system mapping is a practical means to engage community participants and educators in individualized and shared learning about food systems, decisions, and behaviors. Moreover, it is a useful approach for introducing the food system concept, which is somewhat abstract. We developed the approach to capture diversity of personal food…

  14. Control Oriented System Identification

    Science.gov (United States)

    1993-08-01

    The research goals for this grant were to obtain algorithms for control oriented system identification is to construct dynamical models of systems...and measured information. Algorithms for this type of nonlinear system identification have been given that produce models suitable for gain scheduled

  15. Compositional asynchronous membrane systems

    Institute of Scientific and Technical Information of China (English)

    Cosmin Bonchis; Cornel Izbasa; Gabriel Ciobanu

    2007-01-01

    This paper presents an algorithmic way of building complex membrane systems by coupling elementary membranes. Its application seems particularly valuable in the case of asynchronous membrane systems, since the resulting membrane system remains asynchronous. The composition method is based on a handshake mechanism implemented by using antiport rules and promoters.

  16. Small Modular Biomass Systems

    Energy Technology Data Exchange (ETDEWEB)

    None

    2002-12-01

    This fact sheet provides information about modular biomass systems. Small modular biomass systems can help supply electricity to rural areas, businesses, and the billions of people who live without power worldwide. These systems use locally available biomass fuels such as wood, crop waste, animal manures, and landfill gas.

  17. IDC System Specification Document.

    Energy Technology Data Exchange (ETDEWEB)

    Clifford, David J.

    2014-12-01

    This document contains the system specifications derived to satisfy the system requirements found in the IDC System Requirements Document for the IDC Reengineering Phase 2 project. Revisions Version Date Author/Team Revision Description Authorized by V1.0 12/2014 IDC Reengineering Project Team Initial delivery M. Harris

  18. Controllability in nonlinear systems

    Science.gov (United States)

    Hirschorn, R. M.

    1975-01-01

    An explicit expression for the reachable set is obtained for a class of nonlinear systems. This class is described by a chain condition on the Lie algebra of vector fields associated with each nonlinear system. These ideas are used to obtain a generalization of a controllability result for linear systems in the case where multiplicative controls are present.

  19. Information extraction system

    Science.gov (United States)

    Lemmond, Tracy D; Hanley, William G; Guensche, Joseph Wendell; Perry, Nathan C; Nitao, John J; Kidwell, Paul Brandon; Boakye, Kofi Agyeman; Glaser, Ron E; Prenger, Ryan James

    2014-05-13

    An information extraction system and methods of operating the system are provided. In particular, an information extraction system for performing meta-extraction of named entities of people, organizations, and locations as well as relationships and events from text documents are described herein.

  20. LOFAR Information System

    NARCIS (Netherlands)

    Begeman, K.; Belikov, A. N.; Boxhoorn, D. R.; Dijkstra, F.; Holties, H.; Meyer-Zhao, Z.; Renting, G. A.; Valentijn, E. A.; Vriend, W. -J.

    In this paper, we present a newly designed and implemented scientific information system for the LOFAR Long Term Archive. It is a distributed multi-tier storage and data processing system that allows a number of users to process Petabytes of data. The LOFAR Information System is designed on the base

  1. Medical Information Systems.

    Science.gov (United States)

    Smith, Kent A.

    1986-01-01

    Description of information services from the National Library of Medicine (NLM) highlights a new system for retrieving information from NLM's databases (GRATEFUL MED); a formal Regional Medical Library Network; DOCLINE; the Unified Medical Language System; and Integrated Academic Information Management Systems. Research and development and the…

  2. Personal Food System Mapping

    Science.gov (United States)

    Wilsey, David; Dover, Sally

    2014-01-01

    Personal food system mapping is a practical means to engage community participants and educators in individualized and shared learning about food systems, decisions, and behaviors. Moreover, it is a useful approach for introducing the food system concept, which is somewhat abstract. We developed the approach to capture diversity of personal food…

  3. System integration report

    Science.gov (United States)

    Badler, N. I.; Korein, J. D.; Meyer, C.; Manoochehri, K.; Rovins, J.; Beale, J.; Barr, B.

    1985-01-01

    Several areas that arise from the system integration issue were examined. Intersystem analysis is discussed as it relates to software development, shared data bases and interfaces between TEMPUS and PLAID, shaded graphics rendering systems, object design (BUILD), the TEMPUS animation system, anthropometric lab integration, ongoing TEMPUS support and maintenance, and the impact of UNIX and local workstations on the OSDS environment.

  4. Solar tracking system

    Energy Technology Data Exchange (ETDEWEB)

    Okandan, Murat; Nielson, Gregory N.

    2016-07-12

    Solar tracking systems, as well as methods of using such solar tracking systems, are disclosed. More particularly, embodiments of the solar tracking systems include lateral supports horizontally positioned between uprights to support photovoltaic modules. The lateral supports may be raised and lowered along the uprights or translated to cause the photovoltaic modules to track the moving sun.

  5. MILITARY INFORMATION SYSTEMS,

    Science.gov (United States)

    upward are usually indications of how effectively the system is developing or operating. The use of computers in information systems tends to increase...computers into information systems must always begin at the lowest level of aggregation in the job hierarchy. Only those information-processing jobs

  6. Development Expert System

    Institute of Scientific and Technical Information of China (English)

    CAI Heng

    2010-01-01

    The expert system is a high-level technology.It is a sub-field of artificial intelligence.We demonstrated the character and software evaluation,carrying out an initial study of expert system.A good development expert system was developed.

  7. Enterprise Systems Analysis

    Science.gov (United States)

    2017-04-30

    is unavailable until a remediation process fixes the contamination problem. The final infrastructure system is the internet. The internet operates...Enterprise Systems Analysis Technical Report SERC-2017-TR-106 April 30 2017 Principal Investigator: Dr. Michael Pennock, Stevens Institute...Date April 30, 2017 Copyright © 2017 Stevens Institute of Technology The Systems Engineering Research Center (SERC

  8. Lofar information system design

    NARCIS (Netherlands)

    Valentijn, E.; Belikov, A. N.

    2009-01-01

    The Lofar Information System is a solution for Lofar Long Term Archive that is capable to store and handle PBs of raw and processed data. The newly created information system is based on Astro-WISE - the information system for wide field astronomy. We review an adaptation of Astro-WISE for the new t

  9. Types of Data Systems

    Science.gov (United States)

    Gould, Tate; Nicholas, Amy; Ruggiero, Tony; Blandford, William; Thayer, Sara; Bull, Bruce

    2015-01-01

    There are several types of data systems that support data from Part C/619 programs. Although the system types have similarities, each has its own unique characteristics and purposes. The attributes that make one type of data system a particularly good fit for one data-related need or function can be less desirable for another need or function. In…

  10. Energy systems security

    CERN Document Server

    Voeller, John G

    2014-01-01

    Energy Systems Security features articles from the Wiley Handbook of Science and Technology for Homeland Security covering topics related to electricity transmission grids and their protection, risk assessment of energy systems, analysis of interdependent energy networks. Methods to manage electricity transmission disturbances so as to avoid blackouts are discussed, and self-healing energy system and a nano-enabled power source are presented.

  11. Types of Data Systems

    Science.gov (United States)

    Gould, Tate; Nicholas, Amy; Ruggiero, Tony; Blandford, William; Thayer, Sara; Bull, Bruce

    2015-01-01

    There are several types of data systems that support data from Part C/619 programs. Although the system types have similarities, each has its own unique characteristics and purposes. The attributes that make one type of data system a particularly good fit for one data-related need or function can be less desirable for another need or function. In…

  12. The complement system in systemic autoimmune disease.

    Science.gov (United States)

    Chen, Min; Daha, Mohamed R; Kallenberg, Cees G M

    2010-05-01

    Complement is part of the innate immune system. Its major function is recognition and elimination of pathogens via direct killing and/or stimulation of phagocytosis. Activation of the complement system is, however, also involved in the pathogenesis of the systemic autoimmune diseases. Activation via the classical pathway has long been recognized in immune complex-mediated diseases such as cryoglobulinemic vasculitis and systemic lupus erythematosus (SLE). In SLE, the role of complement is somewhat paradoxical. It is involved in autoantibody-initiated tissue damage on the one hand, but, on the other hand, it appears to have protective features as hereditary deficiencies of classical pathway components are associated with an increased risk for SLE. There is increasing evidence that the alternative pathway of complement, even more than the classical pathway, is involved in many systemic autoimmune diseases. This is true for IgA-dominant Henoch Schönlein Purpura, in which additional activation of the lectin pathway contributes to more severe disease. In anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis the complement system was considered not to be involved since immunoglobulin deposition is generally absent in the lesions. However, recent studies, both in human and animal models, demonstrated complement activation via the alternative pathway as a major pathogenic mechanism. Insight into the role of the various pathways of complement in the systemic autoimmune diseases including the vasculitides opens up new ways of treatment by blocking effector pathways of complement. This has been demonstrated for monoclonal antibodies to C5 or C5a in experimental anti-phospholipid antibody syndrome and ANCA-associated vasculitis.

  13. Petascale system management experiences.

    Energy Technology Data Exchange (ETDEWEB)

    Desai, N.; Bradshaw, R.; Lueninghoener, C.; Cherry, A.; Coghlan, S.; Scullin, W. (LCF); ( MCS)

    2008-01-01

    Petascale High-Performance Computing (HPC) systems are among the largest systems in the world. Intrepid, one such system, is a 40,000 node, 556 teraflop Blue Gene/P system that has been deployed at Argonne National Laboratory. In this paper, we provide some background about the system and our administration experiences. In particular, due to the scale of the system, we have faced a variety of issues, some surprising to us, that are not common in the commodity world. We discuss our expectations, these issues, and approaches we have used to address them. HPC systems are a bellwether for computing systems at large, in multiple regards. HPC users are motivated by the need for absolute performance; this results in two important pushes. HPC users are frequently early adopters of new technologies and techniques. Successful technologies, like Infiniband, prove their value in HPC before gaining wider adoption. Unfortunately, this early adoption alone is not sufficient to achieve the levels of performance required by HPC users; parallelism must also be harnessed. Over the last 15 years, beowulf clustering has provided amazing accessibility to non-HPC-savvy and even non-technical audiences. During this time, substantial adoption of clustering has occurred in many market segments unrelated to computational science. A simple trend has emerged: the scale and performance of high-end HPC systems are uncommon at first, but become commonplace over the course of 3-5 years. For example, in early 2003, several systems on the Top500 list consisted of either 1024 nodes or 4096-8192 cores. In 2008, such systems are commonplace. The most recent generation of high-end HPC systems, so called petascale systems, are the culmination of years of research and development in research and academia. Three such systems have been deployed thus far. In addition to the 556 TF Intrepid system at Argonne National Laboratory, a 596 TF Blue Gene/L-based system has been deployed at Lawrence Livermore

  14. 2014 Runtime Systems Summit. Runtime Systems Report

    Energy Technology Data Exchange (ETDEWEB)

    Sarkar, Vivek [US Dept. of Energy, Washington, DC (United States); Budimlic, Zoran [US Dept. of Energy, Washington, DC (United States); Kulkani, Milind [US Dept. of Energy, Washington, DC (United States)

    2016-09-19

    This report summarizes runtime system challenges for exascale computing, that follow from the fundamental challenges for exascale systems that have been well studied in past reports, e.g., [6, 33, 34, 32, 24]. Some of the key exascale challenges that pertain to runtime systems include parallelism, energy efficiency, memory hierarchies, data movement, heterogeneous processors and memories, resilience, performance variability, dynamic resource allocation, performance portability, and interoperability with legacy code. In addition to summarizing these challenges, the report also outlines different approaches to addressing these significant challenges that have been pursued by research projects in the DOE-sponsored X-Stack and OS/R programs. Since there is often confusion as to what exactly the term “runtime system” refers to in the software stack, we include a section on taxonomy to clarify the terminology used by participants in these research projects. In addition, we include a section on deployment opportunities for vendors and government labs to build on the research results from these projects. Finally, this report is also intended to provide a framework for discussing future research and development investments for exascale runtime systems, and for clarifying the role of runtime systems in exascale software.

  15. Reference Materials System: materials policy information system

    Energy Technology Data Exchange (ETDEWEB)

    Bhagat, N.K.; Hoffman, K.C.

    1979-01-01

    The social and economic development of a nation is dependent on a reliable supply of materials and energy and on the efficient utilization of these resources. Decision making in industry and the formulation of government policies require a comprehensive information base encompassing the technical, economic, and environmental factors involved in the flow of materials through production processes and the overall economy. The Reference Materials System (RMS) is a network description of the flow of materials from resource extraction through refinement, production, and transportation processes to the utilization, maintenance, and recycling operations. The system has been employed for the assessment of material production technologies and for the evaluation of substitution possibilities. The RMS provides a framework for integrating engineering and economic information into a comprehensive systems framework. The network flow diagram is quantified in terms of the mass flow of all renewable and nonrenewable materials on an annual basis through each step of the system. A variety of data elements including capital and labor requirements may be organized in this framework to provide a Materials Policy Data Base. This process description of the materials system may also be coupled with economic policy models of the input--output or econometric variety to ensure proper analysis of the role of materials in the overall economy.

  16. Dynamical Systems Conference

    CERN Document Server

    Gils, S; Hoveijn, I; Takens, F; Nonlinear Dynamical Systems and Chaos

    1996-01-01

    Symmetries in dynamical systems, "KAM theory and other perturbation theories", "Infinite dimensional systems", "Time series analysis" and "Numerical continuation and bifurcation analysis" were the main topics of the December 1995 Dynamical Systems Conference held in Groningen in honour of Johann Bernoulli. They now form the core of this work which seeks to present the state of the art in various branches of the theory of dynamical systems. A number of articles have a survey character whereas others deal with recent results in current research. It contains interesting material for all members of the dynamical systems community, ranging from geometric and analytic aspects from a mathematical point of view to applications in various sciences.

  17. Power system relaying

    CERN Document Server

    Horowitz, Stanley H; Niemira, James K

    2013-01-01

    The previous three editions of Power System Relaying offer comprehensive and accessible coverage of the theory and fundamentals of relaying and have been widely adopted on university and industry courses worldwide. With the third edition, the authors have added new and detailed descriptions of power system phenomena such as stability, system-wide protection concepts and discussion of historic outages. Power System Relaying, 4th Edition continues its role as an outstanding textbook on power system protection for senior and graduate students in the field of electric power engineering and a refer

  18. Medical Imaging System

    Science.gov (United States)

    1991-01-01

    The MD Image System, a true-color image processing system that serves as a diagnostic aid and tool for storage and distribution of images, was developed by Medical Image Management Systems, Huntsville, AL, as a "spinoff from a spinoff." The original spinoff, Geostar 8800, developed by Crystal Image Technologies, Huntsville, incorporates advanced UNIX versions of ELAS (developed by NASA's Earth Resources Laboratory for analysis of Landsat images) for general purpose image processing. The MD Image System is an application of this technology to a medical system that aids in the diagnosis of cancer, and can accept, store and analyze images from other sources such as Magnetic Resonance Imaging.

  19. ALFA Detector Control System

    CERN Document Server

    Oleiro Seabra, Luis Filipe; The ATLAS collaboration

    2015-01-01

    ALFA (Absolute Luminosity For ATLAS) is one of the sub-detectors of ATLAS/LHC. The ALFA system is composed by two stations installed in the LHC tunnel 240 m away from each side of the ATLAS interaction point. Each station has a vacuum and ventilation system, movement control and all the required electronic for signal processing. The Detector Control System (DCS) provides control and monitoring of several components and ensures the safe operation of the detector contributing to good Data Quality. This paper describes the ALFA DCS system including a detector overview, operation aspects and hardware control through a SCADA system, WinCC OA.

  20. ALFA Detector Control System

    CERN Document Server

    Oleiro Seabra, Luis Filipe; The ATLAS collaboration

    2015-01-01

    ALFA (Absolute Luminosity For ATLAS) is one of the sub-detectors of ATLAS (A Toroidal LHC Apparatus). The ALFA system is composed by four stations installed in the LHC tunnel 240 m away from the ATLAS interaction point. Each station has a vacuum and ventilation system, movement control and all the required electronics for signal processing. The Detector Control System (DCS) provides control and monitoring of several components and ensures the safe operation of the detector contributing to good Data Quality. This paper describes the ALFA DCS system including a detector overview, operation aspects and hardware control through a SCADA system, WinCC OA.

  1. Leakage resilient password systems

    CERN Document Server

    Li, Yingjiu; Deng, Robert H

    2015-01-01

    This book investigates tradeoff between security and usability in designing leakage resilient password systems (LRP) and introduces two practical LRP systems named Cover Pad and ShadowKey. It demonstrates that existing LRP systems are subject to both brute force attacks and statistical attacks and that these attacks cannot be effectively mitigated without sacrificing the usability of LRP systems. Quantitative analysis proves that a secure LRP system in practical settings imposes a considerable amount of cognitive workload unless certain secure channels are involved. The book introduces a secur

  2. Electric power systems

    CERN Document Server

    Weedy, B M; Jenkins, N; Ekanayake, J B; Strbac, G

    2012-01-01

    The definitive textbook for Power Systems students, providing a grounding in essential power system theory while also focusing on practical power engineering applications. Electric Power Systems has been an essential book in power systems engineering for over thirty years. Bringing the content firmly up-to-date whilst still retaining the flavour of Weedy's extremely popular original, this Fifth Edition has been revised by experts Nick Jenkins, Janaka Ekanayake and Goran Strbac. This wide-ranging text still covers all of the fundamental power systems subjects but is now e

  3. CNEOST Control Software System

    Science.gov (United States)

    Wang, X.; Zhao, H. B.; Xia, Y.; Lu, H.; Li, B.

    2015-03-01

    In 2013, CNEOST (China Near Earth Object Survey Telescope) adapted its hardware system for the new CCD camera. Based on the new system architecture, the control software is re-designed and implemented. The software system adopts the message passing mechanism via WebSocket protocol, and improves its flexibility, expansibility, and scalability. The user interface with responsive web design realizes the remote operating under both desktop and mobile devices. The stable operating of software system has greatly enhanced the operation efficiency while reducing the complexity, and has also made a successful attempt for the future system design of telescope and telescope cloud.

  4. Intelligent Car System

    Directory of Open Access Journals (Sweden)

    Qasim Siddique

    2009-01-01

    Full Text Available In modern life the road safety has becomes the core issue. One single move of a driver can cause horrifying accident. The main goal of intelligent car system is to make communication with other cars on the road. The system is able to control to speed, direction and the distance between the cars the intelligent car system is able to recognize traffic light and is able to take decision according to it. This paper presents a framework of the intelligent car system. I validate several aspect of our system using simulation.

  5. Intelligent Car System

    CERN Document Server

    Siddique, Qasim

    2012-01-01

    In modern life the road safety has becomes the core issue. One single move of a driver can cause horrifying accident. The main goal of intelligent car system is to make communication with other cars on the road. The system is able to control to speed, direction and the distance between the cars the intelligent car system is able to recognize traffic light and is able to take decision according to it. This paper presents a framework of the intelligent car system. I validate several aspect of our system using simulation.

  6. [Automated anesthesia record system].

    Science.gov (United States)

    Zhu, Tao; Liu, Jin

    2005-12-01

    Based on Client/Server architecture, a software of automated anesthesia record system running under Windows operation system and networks has been developed and programmed with Microsoft Visual C++ 6.0, Visual Basic 6.0 and SQL Server. The system can deal with patient's information throughout the anesthesia. It can collect and integrate the data from several kinds of medical equipment such as monitor, infusion pump and anesthesia machine automatically and real-time. After that, the system presents the anesthesia sheets automatically. The record system makes the anesthesia record more accurate and integral and can raise the anesthesiologist's working efficiency.

  7. SNS Cryogenic Systems Commissioning

    Science.gov (United States)

    Hatfield, D.; Casagrande, F.; Campisi, I.; Gurd, P.; Howell, M.; Stout, D.; Strong, H.; Arenius, D.; Creel, J.; Dixon, K.; Ganni, V.; Knudsen, P.

    2006-04-01

    The Spallation Neutron Source (SNS) is under construction at Oak Ridge National Laboratory. The cold section of the Linac consists of 81 superconducting radio frequency cavities cooled to 2.1K by a 2400 watt cryogenic refrigeration system. The major cryogenic system components include warm helium compressors with associated oil removal and gas management, 4.5K cold box, 7000L liquid helium dewar, 2.1K cold box (consisting of 4 stages of cold compressors), gaseous helium storage, helium purification and gas impurity monitoring system, liquid nitrogen storage and the cryogenic distribution transfer line system. The overall system commissioning and future plans will be presented.

  8. A distribution management system

    Energy Technology Data Exchange (ETDEWEB)

    Jaerventausta, P.; Verho, P.; Kaerenlampi, M.; Pitkaenen, M. [Tampere Univ. of Technology (Finland); Partanen, J. [Lappeenranta Univ. of Technology (Finland)

    1998-08-01

    The development of new distribution automation applications is considerably wide nowadays. One of the most interesting areas is the development of a distribution management system (DMS) as an expansion to the traditional SCADA system. At the power transmission level such a system is called an energy management system (EMS). The idea of these expansions is to provide supporting tools for control center operators in system analysis and operation planning. Nowadays the SCADA is the main computer system (and often the only) in the control center. However, the information displayed by the SCADA is often inadequate, and several tasks cannot be solved by a conventional SCADA system. A need for new computer applications in control center arises from the insufficiency of the SCADA and some other trends. The latter means that the overall importance of the distribution networks is increasing. The slowing down of load-growth has often made network reinforcements unprofitable. Thus the existing network must be operated more efficiently. At the same time larger distribution areas are for economical reasons being monitored at one control center and the size of the operation staff is decreasing. The quality of supply requirements are also becoming stricter. The needed data for new applications is mainly available in some existing systems. Thus the computer systems of utilities must be integrated. The main data source for the new applications in the control center are the AM/FM/GIS (i.e. the network database system), the SCADA, and the customer information system (CIS). The new functions can be embedded in some existing computer system. This means a strong dependency on the vendor of the existing system. An alternative strategy is to develop an independent system which is integrated with other computer systems using well-defined interfaces. The latter approach makes it possible to use the new applications in various computer environments, having only a weak dependency on the

  9. Superconductor rotor cooling system

    Science.gov (United States)

    Gamble, Bruce B.; Sidi-Yekhlef, Ahmed; Schwall, Robert E.; Driscoll, David I.; Shoykhet, Boris A.

    2002-01-01

    A system for cooling a superconductor device includes a cryocooler located in a stationary reference frame and a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with a rotating reference frame in which the superconductor device is located. A method of cooling a superconductor device includes locating a cryocooler in a stationary reference frame, and transferring heat from a superconductor device located in a rotating reference frame to the cryocooler through a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with the rotating reference frame.

  10. Measuring Systemic Risk

    DEFF Research Database (Denmark)

    Acharya, Viral V.; Heje Pedersen, Lasse; Philippon, Thomas

    We present a simple model of systemic risk and we show that each financial institution's contribution to systemic risk can be measured as its systemic expected shortfall (SES), i.e., its propensity to be undercapitalized when the system as a whole is undercapitalized. SES increases...... with the institution's leverage and with its expected loss in the tail of the system's loss distribution. Institutions internalize their externality if they are ‘taxed’ based on their SES. We demonstrate empirically the ability of SES to predict emerging risks during the financial crisis of 2007-2009, in particular...

  11. Liver in systemic disease

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Potential causes of abnormal liver function tests include viral hepatitis, alcohol intake, nonalcoholic fatty liver disease, autoimmune liver diseases, hereditary diseases, hepatobiliary malignancies or infection, gallstones and drug-induced liver injury. Moreover, the liver may be involved in systemic diseases that mainly affect other organs. Therefore, in patients without etiology of liver injury by screening serology and diagnostic imaging, but who have systemic diseases, the abnormal liver function test results might be caused by the systemic disease. In most of these patients, the systemic disease should be treated primarily. However, some patients with systemic disease and severe liver injury or fulminant hepatic failure require intensive treatments of the liver.

  12. Information systems project management

    CERN Document Server

    Olson, David

    2014-01-01

    Information Systems Project Management addresses project management in the context of information systems. It deals with general project management principles, with focus on the special characteristics of information systems. It is based on an earlier text, but shortened to focus on essential project management elements.This updated version presents various statistics indicating endemic problems in completing information system projects on time, within budget, at designed functionality. While successful completion of an information systems project is a challenge, there are some things that ca

  13. Benchmarking expert system tools

    Science.gov (United States)

    Riley, Gary

    1988-01-01

    As part of its evaluation of new technologies, the Artificial Intelligence Section of the Mission Planning and Analysis Div. at NASA-Johnson has made timing tests of several expert system building tools. Among the production systems tested were Automated Reasoning Tool, several versions of OPS5, and CLIPS (C Language Integrated Production System), an expert system builder developed by the AI section. Also included in the test were a Zetalisp version of the benchmark along with four versions of the benchmark written in Knowledge Engineering Environment, an object oriented, frame based expert system tool. The benchmarks used for testing are studied.

  14. Building Web Reputation Systems

    CERN Document Server

    Farmer, Randy

    2010-01-01

    What do Amazon's product reviews, eBay's feedback score system, Slashdot's Karma System, and Xbox Live's Achievements have in common? They're all examples of successful reputation systems that enable consumer websites to manage and present user contributions most effectively. This book shows you how to design and develop reputation systems for your own sites or web applications, written by experts who have designed web communities for Yahoo! and other prominent sites. Building Web Reputation Systems helps you ask the hard questions about these underlying mechanisms, and why they're critical

  15. SNS Cryogenic Systems Commissioning

    Energy Technology Data Exchange (ETDEWEB)

    D. Hatfield; F. Casagrande; I. Campisi; P. Gurd; M. Howell; D. Stout; H. Strong; D. Arenius; J. Creel; K. Dixon; V. Ganni; and P. Knudsen

    2005-08-29

    The Spallation Neutron Source (SNS) is under construction at Oak Ridge National Laboratory. The cold section of the Linac consists of 81 superconducting radio frequency cavities cooled to 2.1K by a 2400 watt cryogenic refrigeration system. The major cryogenic system components include warm helium compressors with associated oil removal and gas management, 4.5K cold box, 7000L liquid helium dewar, 2.1K cold box (consisting of 4 stages of cold compressors), gaseous helium storage, helium purification and gas impurity monitoring system, liquid nitrogen storage and the cryogenic distribution transfer line system. The overall system commissioning and future plans will be presented.

  16. Automated PCB Inspection System

    Directory of Open Access Journals (Sweden)

    Syed Usama BUKHARI

    2017-05-01

    Full Text Available Development of an automated PCB inspection system as per the need of industry is a challenging task. In this paper a case study is presented, to exhibit, a proposed system for an immigration process of a manual PCB inspection system to an automated PCB inspection system, with a minimal intervention on the existing production flow, for a leading automotive manufacturing company. A detailed design of the system, based on computer vision followed by testing and analysis was proposed, in order to aid the manufacturer in the process of automation.

  17. Power system state estimation

    CERN Document Server

    Ahmad, Mukhtar

    2012-01-01

    State estimation is one of the most important functions in power system operation and control. This area is concerned with the overall monitoring, control, and contingency evaluation of power systems. It is mainly aimed at providing a reliable estimate of system voltages. State estimator information flows to control centers, where critical decisions are made concerning power system design and operations. This valuable resource provides thorough coverage of this area, helping professionals overcome challenges involving system quality, reliability, security, stability, and economy.Engineers are

  18. Calculus for decision systems

    OpenAIRE

    Samayoa Ranero, Jorge Antonio

    2015-01-01

    The conceptualization of the term "system" has become highly dependent on the application domain. What a physicist means by the term system might be different than what a sociologist means by the same term. In 1956, Bertalanffy [1] defined a system as " a set of units with relationships among them". This and many other definitions of system share the idea of a system as a black box that has parts or elements interacting between each other. This means that at some level of abstraction all syst...

  19. THERMAL DISTRIBUTION SYSTEM EXPERIMENT

    Energy Technology Data Exchange (ETDEWEB)

    KRAJEWSKI,R.F.; ANDREWS,J.W.; WEI,G.

    1999-09-01

    A laboratory experiment has been conducted which tests for the effects of distribution system purging on system Delivery Effectiveness (DE) as defined in ASHRAE 152P. The experiment is described in its configuration, instrumentation, and data acquisition system. Data gathered in the experiment is given and discussed. The results show that purging of the distribution system alone does not offer any improvement of the system DE. Additional supporting tests were conducted regarding experimental simulations of buffer zones and bare pipe and are also discussed.

  20. SYSTEMS ENGINEERING RESEARCH

    Institute of Scientific and Technical Information of China (English)

    Abd-El-Kader SAHRAOUI; Dennis M. BUEDE; Andrew P. SAGE

    2008-01-01

    In this paper, we propose selected research topics that are believed central to progress and growth in the application of systems engineering (SE). As a professional activity, and as an intellectual activity, systems engineering has strong links to such associated disciplines as decision analysis, operation research, project management, quality management, and systems design. When focussing on systems engineering research, we should distinguish between subjects that are of systems engineering essence and others that more closely correspond to those that are more relevant for related disciplines.

  1. Active optical zoom system

    Science.gov (United States)

    Wick, David V.

    2005-12-20

    An active optical zoom system changes the magnification (or effective focal length) of an optical imaging system by utilizing two or more active optics in a conventional optical system. The system can create relatively large changes in system magnification with very small changes in the focal lengths of individual active elements by leveraging the optical power of the conventional optical elements (e.g., passive lenses and mirrors) surrounding the active optics. The active optics serve primarily as variable focal-length lenses or mirrors, although adding other aberrations enables increased utility. The active optics can either be LC SLMs, used in a transmissive optical zoom system, or DMs, used in a reflective optical zoom system. By appropriately designing the optical system, the variable focal-length lenses or mirrors can provide the flexibility necessary to change the overall system focal length (i.e., effective focal length), and therefore magnification, that is normally accomplished with mechanical motion in conventional zoom lenses. The active optics can provide additional flexibility by allowing magnification to occur anywhere within the FOV of the system, not just on-axis as in a conventional system.

  2. Exploration EVA System

    Science.gov (United States)

    Kearney, Lara

    2004-01-01

    In January 2004, the President announced a new Vision for Space Exploration. NASA's Office of Exploration Systems has identified Extravehicular Activity (EVA) as a critical capability for supporting the Vision for Space Exploration. EVA is required for all phases of the Vision, both in-space and planetary. Supporting the human outside the protective environment of the vehicle or habitat and allow ing him/her to perform efficient and effective work requires an integrated EVA "System of systems." The EVA System includes EVA suits, airlocks, tools and mobility aids, and human rovers. At the core of the EVA System is the highly technical EVA suit, which is comprised mainly of a life support system and a pressure/environmental protection garment. The EVA suit, in essence, is a miniature spacecraft, which combines together many different sub-systems such as life support, power, communications, avionics, robotics, pressure systems and thermal systems, into a single autonomous unit. Development of a new EVA suit requires technology advancements similar to those required in the development of a new space vehicle. A majority of the technologies necessary to develop advanced EVA systems are currently at a low Technology Readiness Level of 1-3. This is particularly true for the long-pole technologies of the life support system.

  3. System level ESD protection

    CERN Document Server

    Vashchenko, Vladislav

    2014-01-01

    This book addresses key aspects of analog integrated circuits and systems design related to system level electrostatic discharge (ESD) protection.  It is an invaluable reference for anyone developing systems-on-chip (SoC) and systems-on-package (SoP), integrated with system-level ESD protection. The book focuses on both the design of semiconductor integrated circuit (IC) components with embedded, on-chip system level protection and IC-system co-design. The readers will be enabled to bring the system level ESD protection solutions to the level of integrated circuits, thereby reducing or completely eliminating the need for additional, discrete components on the printed circuit board (PCB) and meeting system-level ESD requirements. The authors take a systematic approach, based on IC-system ESD protection co-design. A detailed description of the available IC-level ESD testing methods is provided, together with a discussion of the correlation between IC-level and system-level ESD testing methods. The IC-level ESD...

  4. The ALHAMBRA photometric system

    CERN Document Server

    Villegas, T Aparicio; Cabrera-Cano, J; Moles, M; Benitez, N; Perea, J; del Olmo, A; Fernandez-Soto, A; Cristobal-Hornillos, D; Husillos, C; Aguerri, J A L; Broadhurst, T; Castander, F J; Cepa, J; Cervino, M; Delgado, R M Gonzalez; Infante, L; Marquez, I; Masegosa, J; Martinez, V J; Prada, F; Quintana, J M; Sanchez, S F

    2010-01-01

    This paper presents the characterization of the optical range of the ALHAMBRA photometric system, a 20 contiguous, equal-width, medium-band CCD system with wavelength coverage from 3500A to 9700A. The photometric description of the system is done by presenting the full response curve as a product of the filters, CCD and atmospheric transmission curves, and using some first and second order moments of this response function. We also introduce the set of standard stars that defines the system, formed by 31 classic spectrophotometric standard stars which have been used in the calibration of other known photometric systems, and 288 stars, flux calibrated homogeneously, from the Next Generation Spectral Library (NGSL). Based on the NGSL, we determine the transformation equations between Sloan Digital Sky Survey (SDSS) ugriz photometry and the ALHAMBRA photometric system, in order to establish some relations between both systems. Finally we develop and discuss a strategy to calculate the photometric zero points of ...

  5. Beam Synchronous Timing Systems

    CERN Document Server

    Peters, A

    2003-01-01

    For many beam diagnostics purposes beam synchronous timing systems are needed in addition to the timing systems supplied by the control systems of the different accelerators. The demands and techniques of different accelerator facilities will be discussed along the following aspects: Bunch and macro pulse synchronous timing systems Solutions for different time scales from ps to ms Coupling to the RF and control systems of the different accelerators Electronics for the beam synchronous timing systems: parameters, techniques, controlling Use of industrial products for bunch synchronous timing systems, e.g. function generators Distribution of the timing signals: electronically via cables, optically via fibres or wireless Coupling to and use of timing standards: IRIG-B, GPS, ? The participants should present and describe solutions from their facilities with some transparencies as a starting point for the discussion.

  6. Synchronization of chaotic systems.

    Science.gov (United States)

    Pecora, Louis M; Carroll, Thomas L

    2015-09-01

    We review some of the history and early work in the area of synchronization in chaotic systems. We start with our own discovery of the phenomenon, but go on to establish the historical timeline of this topic back to the earliest known paper. The topic of synchronization of chaotic systems has always been intriguing, since chaotic systems are known to resist synchronization because of their positive Lyapunov exponents. The convergence of the two systems to identical trajectories is a surprise. We show how people originally thought about this process and how the concept of synchronization changed over the years to a more geometric view using synchronization manifolds. We also show that building synchronizing systems leads naturally to engineering more complex systems whose constituents are chaotic, but which can be tuned to output various chaotic signals. We finally end up at a topic that is still in very active exploration today and that is synchronization of dynamical systems in networks of oscillators.

  7. Quantum system identification.

    Science.gov (United States)

    Burgarth, Daniel; Yuasa, Kazuya

    2012-02-24

    The aim of quantum system identification is to estimate the ingredients inside a black box, in which some quantum-mechanical unitary process takes place, by just looking at its input-output behavior. Here we establish a basic and general framework for quantum system identification, that allows us to classify how much knowledge about the quantum system is attainable, in principle, from a given experimental setup. We show that controllable closed quantum systems can be estimated up to unitary conjugation. Prior knowledge on some elements of the black box helps the system identification. We present an example in which a Bell measurement is more efficient to identify the system. When the topology of the system is known, the framework enables us to establish a general criterion for the estimability of the coupling constants in its Hamiltonian.

  8. Discrete Control Systems

    CERN Document Server

    Lee, Taeyoung; McClamroch, N Harris

    2007-01-01

    Discrete control systems, as considered here, refer to the control theory of discrete-time Lagrangian or Hamiltonian systems. These discrete-time models are based on a discrete variational principle, and are part of the broader field of geometric integration. Geometric integrators are numerical integration methods that preserve geometric properties of continuous systems, such as conservation of the symplectic form, momentum, and energy. They also guarantee that the discrete flow remains on the manifold on which the continuous system evolves, an important property in the case of rigid-body dynamics. In nonlinear control, one typically relies on differential geometric and dynamical systems techniques to prove properties such as stability, controllability, and optimality. More generally, the geometric structure of such systems plays a critical role in the nonlinear analysis of the corresponding control problems. Despite the critical role of geometry and mechanics in the analysis of nonlinear control systems, non...

  9. System floorplanning optimization

    KAUST Repository

    Browning, David W.

    2012-12-01

    Notebook and Laptop Original Equipment Manufacturers (OEMs) place great emphasis on creating unique system designs to differentiate themselves in the mobile market. These systems are developed from the \\'outside in\\' with the focus on how the system is perceived by the end-user. As a consequence, very little consideration is given to the interconnections or power of the devices within the system with a mentality of \\'just make it fit\\'. In this paper we discuss the challenges of Notebook system design and the steps by which system floor-planning tools and algorithms can be used to provide an automated method to optimize this process to ensure all required components most optimally fit inside the Notebook system. © 2012 IEEE.

  10. Ubiquitous Annotation Systems

    DEFF Research Database (Denmark)

    Hansen, Frank Allan

    2006-01-01

    Ubiquitous annotation systems allow users to annotate physical places, objects, and persons with digital information. Especially in the field of location based information systems much work has been done to implement adaptive and context-aware systems, but few efforts have focused on the general...... requirements for linking information to objects in both physical and digital space. This paper surveys annotation techniques from open hypermedia systems, Web based annotation systems, and mobile and augmented reality systems to illustrate different approaches to four central challenges ubiquitous annotation...... systems have to deal with: anchoring, structuring, presentation, and authoring. Through a number of examples each challenge is discussed and HyCon, a context-aware hypermedia framework developed at the University of Aarhus, Denmark, is used to illustrate an integrated approach to ubiquitous annotations...

  11. Multisource energy system project

    Science.gov (United States)

    Dawson, R. W.; Cowan, R. A.

    1987-03-01

    The mission of this project is to investigate methods of providing uninterruptible power to Army communications and navigational facilities, many of which have limited access or are located in rugged terrain. Two alternatives are currently available for deploying terrestrial stand-alone power systems: (1) conventional electric systems powered by diesel fuel, propane, or natural gas, and (2) alternative power systems using renewable energy sources such as solar photovoltaics (PV) or wind turbines (WT). The increased cost of fuels for conventional systems and the high cost of energy storage for single-source renewable energy systems have created interest in the hybrid or multisource energy system. This report will provide a summary of the first and second interim reports, final test results, and a user's guide for software that will assist in applying and designing multi-source energy systems.

  12. System floorplanning optimization

    KAUST Repository

    Browning, David W.

    2013-01-10

    Notebook and Laptop Original Equipment Manufacturers (OEMs) place great emphasis on creating unique system designs to differentiate themselves in the mobile market. These systems are developed from the \\'outside in\\' with the focus on how the system is perceived by the end-user. As a consequence, very little consideration is given to the interconnections or power of the devices within the system with a mentality of \\'just make it fit\\'. In this paper we discuss the challenges of Notebook system design and the steps by which system floor-planning tools and algorithms can be used to provide an automated method to optimize this process to ensure all required components most optimally fit inside the Notebook system.

  13. Space Nuclear Power Systems

    Science.gov (United States)

    Houts, Michael G.

    2012-01-01

    Fission power and propulsion systems can enable exciting space exploration missions. These include bases on the moon and Mars; and the exploration, development, and utilization of the solar system. In the near-term, fission surface power systems could provide abundant, constant, cost-effective power anywhere on the surface of the Moon or Mars, independent of available sunlight. Affordable access to Mars, the asteroid belt, or other destinations could be provided by nuclear thermal rockets. In the further term, high performance fission power supplies could enable both extremely high power levels on planetary surfaces and fission electric propulsion vehicles for rapid, efficient cargo and crew transfer. Advanced fission propulsion systems could eventually allow routine access to the entire solar system. Fission systems could also enable the utilization of resources within the solar system.

  14. MDT DCS Electronics System

    CERN Document Server

    Tsarouchas, Charilaos; Gazis, Evangelos; Tsipolitis, Georgios

    This note has the aim to present the Detector Control System for the Monitor- ing of the electronics values of MDT chambers in ATLAS experiment in CERN. This system is decided to be called in short ELTX. The principal task of DCS is to enable and ensure the coherent and safe oper- ation of the detector. The interaction of detector expers, users or shifters to the detector hardware is also done via DCS. This is the responsible system of moni- toring the operational parameters and the overall state of the detector, the alarm generation and handling, the connection of hardware values to databases and the interaction with the DAQ system. Through this thesis, one can see what ELTX system has to offer as a Detector Control System and in detail, what is the hardware to be controlled and monitored. Moreover it is presented the mainstream of central Atlas DCS concerning the active interfaces.ELTX is a system following these standards.

  15. Combinatorial Hybrid Systems

    DEFF Research Database (Denmark)

    Larsen, Jesper Abildgaard; Wisniewski, Rafal; Grunnet, Jacob Deleuran

    2008-01-01

    As initially suggested by E. Sontag, it is possible to approximate an arbitrary nonlinear system by a set of piecewise linear systems. In this work we concentrate on how to control a system given by a set of piecewise linear systems defined on simplices. By using the results of L. Habets and J. van...... Schuppen, it is possible to find a controller for the system on each of the simplices thus guaranteeing that the system flow on the simplex only will leave the simplex through a subset of its faces. Motivated by R. Forman, on the triangulated state space we define a combinatorial vector field, which...... indicates for a given face the future simplex. In the suggested definition we allow nondeterminacy in form of splitting and merging of solution trajectories. The combinatorial vector field gives rise to combinatorial counterparts of most concepts from dynamical systems, such as duals to vector fields, flow...

  16. Synchronization of chaotic systems

    Energy Technology Data Exchange (ETDEWEB)

    Pecora, Louis M.; Carroll, Thomas L. [U.S. Naval Research Laboratory, Washington, District of Columbia 20375 (United States)

    2015-09-15

    We review some of the history and early work in the area of synchronization in chaotic systems. We start with our own discovery of the phenomenon, but go on to establish the historical timeline of this topic back to the earliest known paper. The topic of synchronization of chaotic systems has always been intriguing, since chaotic systems are known to resist synchronization because of their positive Lyapunov exponents. The convergence of the two systems to identical trajectories is a surprise. We show how people originally thought about this process and how the concept of synchronization changed over the years to a more geometric view using synchronization manifolds. We also show that building synchronizing systems leads naturally to engineering more complex systems whose constituents are chaotic, but which can be tuned to output various chaotic signals. We finally end up at a topic that is still in very active exploration today and that is synchronization of dynamical systems in networks of oscillators.

  17. Thermodynamics of Nonadditive Systems.

    Science.gov (United States)

    Latella, Ivan; Pérez-Madrid, Agustín; Campa, Alessandro; Casetti, Lapo; Ruffo, Stefano

    2015-06-12

    The usual formulation of thermodynamics is based on the additivity of macroscopic systems. However, there are numerous examples of macroscopic systems that are not additive, due to the long-range character of the interaction among the constituents. We present here an approach in which nonadditive systems can be described within a purely thermodynamics formalism. The basic concept is to consider a large ensemble of replicas of the system where the standard formulation of thermodynamics can be naturally applied and the properties of a single system can be consequently inferred. After presenting the approach, we show its implementation in systems where the interaction decays as 1/r(α) in the interparticle distance r, with α smaller than the embedding dimension d, and in the Thirring model for gravitational systems.

  18. Continuous recovery system for electrorefiner system

    Science.gov (United States)

    Williamson, Mark A.; Wiedmeyer, Stanley G.; Willit, James L.; Barnes, Laurel A.; Blaskovitz, Robert J.

    2014-06-10

    A continuous recovery system for an electrorefiner system may include a trough having a ridge portion and a furrow portion. The furrow portion may include a first section and a second section. An inlet and exit pipe may be connected to the trough. The inlet pipe may include an outlet opening that opens up to the first section of the furrow portion of the trough. The exit pipe may include an entrance opening that opens up to the second section of the furrow portion of the trough. A chain may extend through the inlet and exit pipes and along the furrow portion of the trough. The chain may be in a continuous loop form. A plurality of flights may be secured to the chain. Accordingly, the desired product may be continuously harvested from the electrorefiner system without having to halt the electrical power and/or remove the cathode and anode assemblies.

  19. Immune System Inspired Strategies for Distributed Systems

    CERN Document Server

    Banerjee, Soumya

    2010-01-01

    Many components of the IS are constructed as modular units which do not need to communicate with each other such that the number of components increases but the size remains constant. However, a sub-modular IS architecture in which lymph node number and size both increase sublinearly with body size is shown to efficiently balance the requirements of communication and migration, consistent with experimental data. We hypothesize that the IS architecture optimizes the tradeoff between local search for pathogens and global response using antibodies. Similar to natural immune systems, physical space and resource are also important constraints on Artificial Immune Systems (AIS), especially distributed systems applications used to connect low-powered sensors using short-range wireless communication. AIS problems like distributed robot control will also require a sub-modular architecture to efficiently balance the tradeoff between local search for a solution and global response or proliferation of the solution betwee...

  20. Automated Information System (AIS) Alarm System

    Energy Technology Data Exchange (ETDEWEB)

    Hunteman, W.

    1997-05-01

    The Automated Information Alarm System is a joint effort between Los Alamos National Laboratory, Lawrence Livermore National Laboratory, and Sandia National Laboratory to demonstrate and implement, on a small-to-medium sized local area network, an automated system that detects and automatically responds to attacks that use readily available tools and methodologies. The Alarm System will sense or detect, assess, and respond to suspicious activities that may be detrimental to information on the network or to continued operation of the network. The responses will allow stopping, isolating, or ejecting the suspicious activities. The number of sensors, the sensitivity of the sensors, the assessment criteria, and the desired responses may be set by the using organization to meet their local security policies.