• Title/Summary/Keyword: number system

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Bus Information System Providing Passenger Number Information (승차인원정보를 제공하는 버스정보시스템)

  • Hwang, Hun-Gyu;Lee, Jang-Se
    • The Journal of the Korea Contents Association
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    • v.9 no.12
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    • pp.31-38
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    • 2009
  • The objective of this paper is to propose the bus information system that provides bus passenger number. Recently, we use a bus conveniently through introduction of bus information system offering location-based information. However, we need additional information for decision making in order to use a bus comfortably. To do this, first, we analyzed the needs of providing passenger number; second, we adopted GPS and RFID type's transportation card to get location and passenger number. Finally, we implemented the system displaying that information by three types, and tested it. Our proposed system has advantages to use a bus comfortably and to manage a bus efficiently by providing bus passenger number which is the important element for decision making as well as location based information provided by existing bus information systems.

Hypercube Diagnosis Algorithm for Large Number of Faults (다중의 결함을 갖는 하이퍼큐브 진단 알고리즘)

  • Rhee, Chung-Sei
    • Convergence Security Journal
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    • v.9 no.2
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    • pp.1-6
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    • 2009
  • Most diagnosis algorithms have been done using the characteristic of t-diagnosable system based on PMC model. But as parallel systems grow fast, more faulty units occur in the system. Previous researches are done on the assumption of small number of faulty units in the system. There have been little studies on the system where number of faulty units exceed t. In this study, we assume the number of faulty units exceed t and there exist small number of nodes where the correctness of diagnosis can't be decided, then we propose an algorithm which increase the maximum number of faulty units in diagnosis system.

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Parallel Modular Multiplication Algorithm to Improve Time and Space Complexity in Residue Number System (RNS상에서 시간 및 공간 복잡도 향상을 위한 병렬 모듈러 곱셈 알고리즘)

  • 박희주;김현성
    • Journal of KIISE:Computer Systems and Theory
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    • v.30 no.9
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    • pp.454-460
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    • 2003
  • In this paper, we present a novel method of parallelization of the modular multiplication algorithm to improve time and space complexity on RNS (Residue Number System). The parallel algorithm executes modular reduction using new table lookup based reduction method. MRS (Mixed Radix number System) is used because algebraic comparison is difficult in RNS which has a non-weighted number representation. Conversion from residue number system to certain MRS is relatively fast in residue computer. Therefore magnitude comparison is easily Performed on MRS. By the analysis of the algorithm, it is known that it requires only 1/2 table size than previous approach. And it requires 0(ι) arithmetic operations using 2ㅣ processors.

The Study on Modification Methods of Residents Registration Number System (주민등록번호제도 변경방안에 관한 연구 : 주요 쟁점에 대한 인식조사를 중심으로)

  • Choi, Seong-Rak;Lee, Hye-Young
    • The Journal of the Korea Contents Association
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    • v.16 no.11
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    • pp.128-138
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    • 2016
  • On 23th December in 2015, Constitutional court of Korea decided the Resident Registration Act which could not changed one's Resident Registration Number was Unconformable to Constitution. And declared that the Resident Registration Act had to amend the article. This study analyzes the issues and preferences of people about the modification methods of Resident Registration Number System. In result, the residents agree on the autonomy of residents registration number change and prefer not including personal information to including personal information in registration number system. And the residents want to operate the Second number system besides resident registration number. However, they don't want to pay the change cost of resident registration number system. This results give a few of implications when the change methods of resident registration system would be prepared.

Analysis of Number System introduced in the 7th National Mathematics Curriculum and Mathematics Text Books of Korea (제 7차 수학과 교육과정과 교과서에 제시된 수 체계 도입에 관한 연구)

  • 김흥기
    • The Mathematical Education
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    • v.42 no.3
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    • pp.265-274
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    • 2003
  • To learn number system is a basic thing in school mathematics. In this paper, we analyze how number system is introduced in the 7th national curriculum and text books according to it. We found that the method of introducing number system is quite different from the former curriculum and former text books. There are many negative effects on the transition when compared with those of United States of America. There are many gaps between elementary school mathematics and middle school mathematics about levels and skills to deal with numbers. It is desirable to distinguish the negative sign from subtraction and to keep the concepts of commutativity and associativity of operations from the beginning. We also suggest to change the introducing timing and extension methods of number system in 7th grade mathematics.

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Optimum Inspection and Replacement Policy in Redundant System

  • Yun, Won Young;Cha, Myung Soo
    • Journal of Korean Society for Quality Management
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    • v.19 no.2
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    • pp.78-85
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    • 1991
  • In this paper, an inspection and replacement policy in a redundant system is considered. It is assumed that the state of the redundant system is known by inspection. When the system is inspected, it is preventively replaced only if the number of failed units exceeds the predetermined limit. Otherwise, the system is inspected after a inspection interval which depends on the number of failed units. We obtain the optimal number of redundant units, inspection intervals and replacement limit minimizing the expected cost rate.

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A Design Problem of a System Working at Both Primary Service and Secondary Service (주서비스와 보조서비스를 갖는 시스템 설계)

  • Kim, Sung-Chul
    • Korean Management Science Review
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    • v.28 no.3
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    • pp.15-29
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    • 2011
  • In this paper, we consider a system working at both primary service and secondary service. A server can switch between the primary service and the secondary service or it can be assigned to secondary service as a dedicated server. A service policy is characterized by the number of servers dedicated to the secondary service and a rule for switching the remaining servers between two services. The primary service system is modelled as a Markovian queueing system and the throughput is a function of the number of servers, buffer capacity, and service policy. And the secondary service system has a service level requirement strategically determined to perform the service assigned. There is a revenue obtained from throughput and costs due to servers and buffers. We study the problem of simultaneously determining the optimal total number of servers, buffers, and service policy to maximize profit of the system subject to both an expected customer waiting time constraint of the primary service and a service level constraint of the secondary service and develop an algorithm which can be successfully applied with the small number of computations.

A Case Study on Determining the Number of Spare Modules in Power Plant Control System Used for Long Term (장기사용 발전소 제어시스템의 예비모듈 수 결정 사례)

  • 정창기;신윤오;박정원;함중걸
    • Journal of Korean Society for Quality Management
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    • v.28 no.1
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    • pp.210-219
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    • 2000
  • When an electronic control system has been used for long time, the electronic control system becomes obsolete and no longer In production. In this case, the existing control system should replace by new system due to shortage of spare modules. However, if the proper number of spare modules are stocked, it may be possible and more economical than to replace by new system to extend the usage period of the existing control system. In this case, it is an important problem to determine the proper number of spare modules. In this paper, a method to determine the proper number of spare modules is presented with an application example.

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A Study on Active Control of the Radiated Duct Noise with Insufficient Number of Control Dources and Microphones (덕트 내부의 고차모드 수보다 적은 수의 제어음원과 마이크로폰을 이용한 덕트 방사소음 제어에 관한 연구)

  • 윤두병;김양한;정균양;조대승
    • Journal of KSNVE
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    • v.8 no.2
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    • pp.283-288
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    • 1998
  • If one wants to control the noise from a duct, then one must have sufficient number of sensors and actuators so that the control system is observable and controllable. A number of sensors and actuators for control of radiating noise from a duct have to be incorporated with the number of modes which one wants to control. These considerations motivated the present study that considers a control system which has less microphones and actuators than required. In this work, by theoretical analysis and numerical simulation, the control performance and robust reliability of such a kind of control system is investigated in terms of sound-field variables and control system variables. Then the possibility of implementation of the robust radiation power control system is verified by theoretical analysis and numerical simulation. In addition, the control performance of the control system is verified by experiment.

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DIFFERENTIALS OF THE BICOMPLEX FUNCTIONS FOR EACH CONJUGATIONS BY THE NAIVE APPROACH

  • Kang, Han Ul;Kim, Min Ji;Shon, Kwang Ho
    • Honam Mathematical Journal
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    • v.39 no.2
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    • pp.307-315
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    • 2017
  • In this paper, we aim to compare the differentials with the regularity of the hypercomplex valued functions in Clifford analysis. For three kinds of conjugation of the bicomplex numbers, we define the differentials of the bicomplex number functions by the naive approach. And we investigate some relations of the corresponding Cauchy-Riemann system and the conditions of the differentiable functions in the bicomplex number system.