1011 research outputs found
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Birational properties of algebraic curves on elliptic ruled surfaces
Get PDFpublisherThe purpose of this paper is to study numerical properties of algebraic curves C on elliptic ruled surfaces X. Let (S,D) be a non-singular minimal model of the pair (X,C). Defining n to be 4g(D)-D2-4, where g(D) denotes the genus of D, we establish the inquality C･F≦2n where F is a general fiber of the elliptic surface which has the structure of affine bundle of degree -1.departmental bulletin pape
Reduction of Exhaust Pollutants from a Diesel Engine by Water Injection into the Exhaust Flow and Exhaust Gas Recirculation.
Get PDFpublisherIn order to reduce the emissions of nitrogen oxides and particulates from diesel engines, exhaust gas recirculation, EGR, combined with water injection into the exhaust is proposed and has been evaluated using a pre-camber engine. In this method, exhaust gas in which particulates were separated by water injection is fed into the intake air charge. The results show that exhaust black smoke is decreased remarkably by injecting water into the exhaust strearn, and it is expected that a greater black smoke reduction might be attained with less amount of water with finer atomization and better distribution. In the case of the combination of water injection and EGR, simultaneous reduction of NO and black smoke can be achieved at low load condition. At higher load, however, black smoke deteriorates with increasing the amount of recirculated gas due to the decreasing of oxygen concentration in the intake gas, so that EGR rate should be kept at low level for the purification of diesel exhaust.departmental bulletin pape
A Tentative Plan of Semi-Special Cultivated Physics Education Ⅱ
Get PDFpublisherA improvement of physics education in college is proposed for the sake of making more students fascinate in physics. The interesting events in science should be abundantly taken up in the subject of physics. Two terms of the extreme physical properties and big-bang are exemplified among many items in different fashion from ordinary one.departmental bulletin pape
A Practice System for building a Web Page on a PC Server using Free Wares
Get PDFpublisherA practice system was developed for building a web page on a PC server using free ware. It was found that this system, which(except for the OS) required only free ware, is not only easily be set up by beginners, but may be used by advanced programers as well, to build complex web sites. It also turns out that the system works well under a simple standard PC environment without a LAN card or modem.departmental bulletin pape
Case Study of The Teaching of Computer Programming that Utilizes The Feedback To The Students
Get PDFpublisherThe teaching of computer programming is important in the department of computer sciences. But the lectures related to computer programming are weak subjects for many students. To conquer such a sitiuation, this report, presents the method to teach about computer programming. The point of this method is using the web technology and the reports which return to the students, to make the teacher communicate with each student. This method was successful in yielding some students who wrestle with programming actually. But it is difficult to succeed by this method in the case that one teacher is in charge of many students.departmental bulletin pape
Introduction of A Self-taught Subject in The Department of Electronics and Computer Engineering
Get PDFpublisher平成12年度に行われたカリキュラムの大改定に伴って，情報工学科には自発的学習科目が大幅に取り入れられた．その中で，最も低学年に導入された「情報課題演習」科目の導入および実施経緯のレポートである．この科目は，まったく新しい概念の科目であり，ノウハウの蓄積がないため，この1年間，その実施は試行錯誤の連続であった．
前年度の早い時期から，この科目の授業形態をどうするかの議論から始めて，課題テーマ集め，各研究室配属，学習時間や場所の確保，成果発表会等々実際に行った具体的な実施方法，成果，実施上の問題点等の詳細な報告である．departmental bulletin pape
Application of Compact Pneumatic System for Robot Contest
Get PDFpublisherA drive system of robot must be lightweight and compact in robot contest of national college. We think that it is useful to use pneumatic system as a drive mechanism of the robot. Because a pneumatic system has a large ratio between generated force and weight. A peripheral device that needs to drive preumatic actuator is more compact than hydraulic systems.
This paper describe to apply pneumatic drive system for the robot which has limits of size and weight. The robot consists of pneumatic cylinders, compressors, valves and tanks. In order to execute some subject of robot competition, we tested 3 stage pneumatic cylinders which have a long stroke of 1.8 m for lifting robot's body. And, we designed compact peripheral device which can drive tested pneumatic actuator. As the results of develepment and experiments, we can realize the robot which can be driven by lightweight pneumatic system. We could modify the performance of the lifting the robot’s body by using plastic air tank.departmental bulletin pape
An Information Education Environment of the Elementary and Secondeary School in a Town -An on-the-spot Investigation and an Active Support-
Get PDFpublisherNew Japanese government guidelines for teaching, which will take effect next April, require various information education in almost all subjects of the elementary and secondary education. We firsthand survey a computer and communication environment utilized for the information education of elementary schools at Kagamino Town located in the north of Okayama prefecture. Based on the collected data, we point out several problems to put the guidelines into force, then carry out supporting activities to solve the problems.departmental bulletin pape
Posture Control of a Mechanically Unstable Robot -Simulation with Computational Mechanics Program and Control Experiment-
Get PDFpublisherStudies on transportation with moving robot have been performed in recent year. In case of high stature robot, it is feared to fall down when the robot accepts the object. Therefore, the unstable robot has to maintain its posture by control. For the study of posture control, we take up the inverted pendulum robot as the representative unstable robot. The robot consists of an inverted pendulum type body and two coaxial parallel wheels. This paper describes the controllability of the experimental robot manufactured for the study and new simulation method with computational mechanics program. The posture of the experimental robot is regulated by the state feedback control. And it is evident that the presented simulation method can deal with the slip between the wheel and floor. So, this simulation is very useful in investigating the posture control scheme.departmental bulletin pape
English Society Seen through the Comedies of T.Otway ＆ A.Behn
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