We present a functional simulation tool of the network processor developed at the Pontifical Catholic University of Minas Gerais, Brazil. It started during an undergraduate research project. The instruction set and mi...
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We present a functional simulation tool of the network processor developed at the Pontifical Catholic University of Minas Gerais, Brazil. It started during an undergraduate research project. The instruction set and microarchitecture of this type of processor are specialized and dedicated to work in network layers. Our main goals are improving and optimizing the learning activities related to the network processor for engineering and computer science users.
Prober is a functional and performance analysis tool for parallel programs, developed during an undergraduate research project. In this paper we show the new expanded version of Prober, in which some features from dif...
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Prober is a functional and performance analysis tool for parallel programs, developed during an undergraduate research project. In this paper we show the new expanded version of Prober, in which some features from different software tools are aggregated. It can be used as a single tool to aid the developer in the performance analysis of parallel programs. Our main goal is to provide a new version of Prober, with additional features. Among them we can highlight: the interpretation of user scripts, a user-level support library, the generation of speedup and efficiency graphics, batch execution and a new user interface. In order to show, verify and analyze the use of the new version of Prober, we did performance tests in a parallel image convolution program. We added performance measuring routines to collect performance data within different internal code segments; built a set of scripts to specify the performance tests; ran the set of scripts in batch mode; used Prober to generate graphics and statistics based on the collected performance data; and analyzed the results using Prober as an aid tool.
We present a new learning method of microprocessor architecture based on design and verification using functional simulation. Our main goals are to improve and optimize the learning process, motivating students to stu...
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We present a new learning method of microprocessor architecture based on design and verification using functional simulation. Our main goals are to improve and optimize the learning process, motivating students to study and learn theoretical and practical aspects of microprocessor architecture, using functional simulators to validate the microprocessor design and to construct knowledge; and develop research activities during an undergraduate course. Our method is based on learning, constructivism theory, problem based learning, group projects, design of academic microprocessors as motivation for theory study/learning and verification of designed microprocessors through functional simulators developed by students. To validate the proposed method we analyze two microprocessors and functional simulators: a digital signal processor using ASIP and RISC concepts, and a RISC ASIP home automation processor. They were developed in a computer architecture course (computer science, PUC-Minas, Brazil) as the application of this method. In the conclusion students and professor analyze the results, highlighting the main differences, advantages and disadvantages of the new method.
In this paper we analyze the teaching and learning of parallel processing through performance analysis using a software tool called Prober. This tool is a functional and performance analyzer of parallel programs that ...
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In this paper we analyze the teaching and learning of parallel processing through performance analysis using a software tool called Prober. This tool is a functional and performance analyzer of parallel programs that we proposed and developed during an undergraduate research project. Our teaching and learning approach consists of a practical class where students receive explanations about some concepts of parallel processing and the use of the tool. They do some oriented and simple performance tests on parallel programs and analyze their results using Prober as a single aid tool. Finally, students answer a self-assessment questionnaire about their formation, their knowledge of parallel processing concepts and also about the usability of Prober. Our main goal is to show that students can learn concepts of parallel processing in a clearer, faster and more efficient way using our approach.
In asynchronous wind micropower generation, two aspects must be associated for maximum generated power: turbine alignment and load control. An algorithm to simultaneously control the load current and the wind turbine ...
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ISBN:
(纸本)0780366069
In asynchronous wind micropower generation, two aspects must be associated for maximum generated power: turbine alignment and load control. An algorithm to simultaneously control the load current and the wind turbine shaft direction is presented aiming at maximized use of the available wind energy. This algorithm allows the tracking for the maximum power, without any direct measurement of both wind intensity and/or wind direction. With this purpose, two additional subroutines were written as a part of the main program of control, based on an heuristic forward chaining method of artificial intelligence, known as hill climbing. Both subroutines are executed alternatively and they share the same data acquisition circuits of the conventional control system. A DC motor is used to properly yaw the turbine while a power converter copes with the load current. As a result one has a simplified, robust and efficient control for use in small wind energy systems.
Surviving and growing in a world characterized by competitiviness in a global scale and by continued and unexpected changes, has been a paradigm for the organizations. With the globalization process, which is a realit...
Surviving and growing in a world characterized by competitiviness in a global scale and by continued and unexpected changes, has been a paradigm for the organizations. With the globalization process, which is a reality, the technological evolution and the complexity of the modern world, new needs have appeared in the working position realm, The concrete fact is that transformations alter the work-man, man-machine, man-productive system relations besides the kinds of workers. The man-machine relation is really important in the organizational environment because the technological advances may motivate the worker as well as scare and unqualify him. So, no ergonomics analysis through working signs may be an excellent tool to help in the adaptation of the worker to the working position and also detect and settle the points which must be emphasized and modified to obtain the organizational efficiency.
作者：
CALOGERO, RMCMANUS, DRobert Calogero graduated from the University of Maryland with a Bachelor of Science in Electrical Engineering in February 1965. He entered the Magnetic Defense Section of Propulsion
Power and Auxiliary Systems Division of the Naval Ship Engineering Center where he had previously served as a summer student engineering aid. In December 1968 he transferred to the Maintenance Management Branch of NAVSHIPS where he assumed responsibility as Manager of the Operational Sequencing System. Calogero is presently in the Engineering Administration Program offered at the George Washington University and is a member of the Association of Senior Engineers of the Naval Ships Systems Command. Donald McManus graduated from the Maine Maritime Academy in 1954
and received his Bachelor of Marine Science Degree Commission in the U. S. Naval Reserve and a USCG Marine Engineer's license. After graduation he sailed as a licensed engineer aboard steam and diesel powered tankers and “dry cargo” vessels engaged in worldwide commercial trade. Upon release from active duty in 1958 he was employed for the next eight and one-half years at the Sun Shipbuilding and Drydock Co. Chester Pa. in various engineering capacities. McManus came to the Naval Ship Engineering Center in December 1966 and is presently employed as a Marine Engineer in the Control Section of Machinery Arrangement and Controls Branch. He is a member of the Association of Senior Engineers of the Naval Ship Systems Command.
The many varied types of engineering plants extent in today's modern Navy requires an ever creasing range and depth of operational knowledge by engineering personnel at all levels of shipboard operations. The Engi...
The many varied types of engineering plants extent in today's modern Navy requires an ever creasing range and depth of operational knowledge by engineering personnel at all levels of shipboard operations. The engineering Operational Sequencing System (EOSS) provides each of these levels with the required information to enable the engineering plant to respond to any demands placed upon it which are within its design capability. The engineering Operational Sequencing System is a set of systematic and detailed written procedures utilizing charts, instructions and diagrams which provide the information required for the operation of a shipboard propulsion plant. The purpose of this paper will be to define and discuss the EOSS; to describe the system background, current status and future implementation plans.
作者：
BENNETT, RAWSONUSN Chief of Naval ResearchTHE AUTHOR was born on June 16
1905. in Chicago Illinois. He was appointed to the U. S. Naval Academy Annapolis. Maryland from California in 1923. Graduated and commissioned Ensign on June 2 1921 he subsequently advanced to the rank of Captain to date from March 20 1945. In December 1955 he was appointed Rear Admiral to date from January 3 1956. Following graduation in 1927 he joined the USS California flagship of the Battle Fleet. Later in 1928. he was assigned communication duty on the staff of Commander Battle Fleet serving as such until August 1930. In November of that year he reported on board the USS Isabel for duty on Asiatic Station and in October 1932 was transferred to the USS Rochester. He completed his Asiatic tour of duty in the USS Houston in 1933. Detached from this vessel he returned to the United States and joined the USS Idaho. After 7 years of sea duty he returned to Annapolis Maryland for postgraduate instruction in radio (electronic) engineering. He completed the course in May 1936 and was assigned to the University of California Berkeley for additional postgraduate work receiving the Master of Science degree in Electrical Engineering after which he reported aboard the USS Concord. Continuing sea duty he joined the staff of Commander Destroyer Division Nineteen (later redesignated Destroyer Fifty) in April 1938 and served as Radio and Sound Officer until June 1941. Starting in July 1939 he set up the technical program of the first fleet Sound School at San Diego California. In July 1941 he reported to the Bureau of Ships Navy Department Washington D.C. There he served first as Head of the Underwater Sound Design Section of the Radio Division and later Head of Electronics Design Division from 1943 to 1946. He was awarded the Legion of Merit “for exceptionally meritorious conduct” during this tour of duty. Upon leaving the Bureau of Ships in August 1946 he reported as Director of the U. S. Navy Electronics Laboratory Point Loma
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