• Title/Summary/Keyword: Conflicts Control

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Bounding Worst-Case Performance for Multi-Core Processors with Shared L2 Instruction Caches

  • Yan, Jun;Zhang, Wei
    • Journal of Computing Science and Engineering
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    • v.5 no.1
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    • pp.1-18
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    • 2011
  • As the first step toward real-time multi-core computing, this paper presents a novel approach to bounding the worst-case performance for threads running on multi-core processors with shared L2 instruction caches. The idea of our approach is to compute the worst-case instruction access interferences between different threads based on the program control flow information of each thread, which can be statically analyzed. Our experiments indicate that the proposed approach can reasonably estimate the worst-case shared L2 instruction cache misses by considering the inter-thread instruction conflicts. Also, the worst-case execution time (WCET) of applications running on multi-core processors estimated by our approach is much better than the estimation by simply assuming all L2 instruction accesses are misses.

A Study on the Optimal Algorithm to Find the Minimum Numbers of Sharing Resources in Semiconductor Production Systems (반도체 생산 시스템에서의 최소 공유 장비를 구하는 최적 알고리즘에 관한 연구)

  • 반장호;고인선
    • 제어로봇시스템학회:학술대회논문집
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    • 2000.10a
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    • pp.61-61
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    • 2000
  • Since FMS(Flexible Manufacturing System) such as semiconductor production systems have the characteristic that each device has to be commonly used in several stages, it is difficult to find an optimal solution. In this paper, we proposed the new algorithm which can get the optimal ratio of sharing resources. We will implement the proposed algorithm to semiconductor production systems. We introduce the optimal algorithm, which is modeled and analyzed by ExSpect, a petri net based simulation tool. When there exist conflicts of sharing resources, the scheduling method is adopted, which gives a priority to the most preceded process. The suggested algorithm can be used not only in semiconductor production systems but also in various FMS.

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A Study on the Performance Analysis of Process Model with Resource Constraints in Concurrent Engineering Environment (동시공학 환경에서 자원제약이 있는 프로세스 모델의 성능분석에 관한 연구)

  • 강동진;이상용;유왕진;정용식
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.22 no.51
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    • pp.231-240
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    • 1999
  • A major concern in Concurrent Engineering is the control and management of workload in a period of process. As a general rule, leveling the peak of workload in certain period is difficult because concurrent processing is comprised of various processes, including overlapping, paralleling looping and so on. Therefore, the workload management with resource constraints is so beneficial that effective methods to analyze design process are momentous. This study presents the Timed Petri Nets approach of precedence logic networks, and provides an alternative for users to analyze constraint processes to resolve conflicts of resources. Another approach to Continuous Time Markov Chain using Stochastic Petri Nets is also proposed. These approaches are expected to facilitate resolving resource constrained scheduling problems more systematically in Concurrent Engineering environment.

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Financial Innovation and Investor Wealth: A Study of the Poison Put in Convertible Bonds

  • Nanda, Vikram;Yun, Young-Keol
    • The Korean Journal of Financial Studies
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    • v.3 no.1
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    • pp.267-299
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    • 1996
  • The takeover boom of the 1980s was accompanied by a series of innovations in debt contracts, including the poison put that allows bonds to be redeemed in the event of a corporate control change. The poison put was included in a large majority of convertible debt offerings, shortly after the first issues with such provisions. We attempt to understand the factors that contributed to the widespread adoption of this innovation in convertible bonds and the consequences for shareholder wealth. Our, findings suggest that by reducing the potential for bondholder-shareholder conflicts and by conveying positive information about future takeover prospect'5, poison puts result in significant benefits to issuing firm shareholders, particularly if the firm is under takeover speculation. There are, however, no benefits when a firm has adopted anti-takeover measures prior to the offering. There is weaker evidence that existing bondholders do worse when poison puts are present.

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Franchisee's Cognition on Franchise-contract in Foodservice Industry (외식 프랜차이지의 가맹 계약 법률 인식에 관한 연구)

  • Park, Jae-Ho;Cheon, Hee-Sook
    • Culinary science and hospitality research
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    • v.12 no.4 s.31
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    • pp.46-62
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    • 2006
  • This study researched unequal trades and analyzed the difference of legal relation control between the franchisor and the franchisee in foodservice industry. The purpose of this study was the preparatory process for basic data to establish a statute law for the franchisee in foodservice industry. We made up a questionnaire for 53 franchisees in March 2004 and analysed spss 10.0. This result was as follows. First, the special office was needed for publicity activities of law related franchise and the investigation of a right in the written contract for a franchisee. Second, there should be the conformation and objective criteria of monopolistic goodwill in legal proceedings. Third, the larger the scale of franchisees was, the less efficiently the conflicts between franchisors and franchisees were controlled.

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Train Scheduling and Rescheduling In Pakistan

  • Abid, Malik Muneeb;Khan, Muhammad Babar
    • International Journal of Railway
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    • v.6 no.1
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    • pp.7-12
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    • 2013
  • This paper provides an overview of Pakistan Railways scheduling and rescheduling. First of all, Pakistan Railways is introduced with its brief history and importance in this country. Assets of this network with passengers and freight using this are given. Current hope less situation is leading to privatization of this system as well as promoting short distance traveler to use road and Government efforts to retain is also presented. Train scheduling in Pakistan is being done manually, based on manual time distance graph preparation and resolution of conflicts based on manager's experience and ability. In Real-time management of this traffic Lahore head office is connected with six control stations in the Pakistan, decision for resolution of any disturbance is coordinated among them. It is recommended that computer aided tools must be developed for this system to help traffic managers and it is needed to invest on the segments to increase their speed limits which might attract passengers to use this mode of transportation with high priority.

NEW TREND OF FIRE SCIENCE AND EIRE PROTECTION TECHNOLOGY

  • Sugahara, Shinichi
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 1997.11a
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    • pp.19-26
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    • 1997
  • Firesafety design engineerings have been mainly derived from complicated rearrangement of descriptive specifications in codes or regulations through a great number of lessons from fire disasters. In this paper, the author refers to some recent developments in the field of building fire protection. At first, the author expresses his viewpoints concerning performance-based design codes, which have been popular throughout the world as a symbol of freedom from restricted usage of building materials and components prescrived in regulation or bylaws, in spite of some conflicts between objects-oriented design method and industrial mass production. Secondly, the author introduces several innovative fire protection methods adopted for large or void spaces in building complex. Finally, the author forcasts a next development of firesafety science and technology, aimed at securing personal safety in hyperscale urban areas.

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Development and Evaluation of the Marital Equality Education Program for Women Farmers and their Husband (농촌 부부평등교육 프로그램 개발 및 효과검증)

  • 최규련
    • Journal of Families and Better Life
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    • v.20 no.3
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    • pp.73-85
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    • 2002
  • The purpose of this study was to develop and evaluate the Marital Equality Education Program for women farmers and their husband. Based on the empirical research result of 980 women farmers as basic study for developing this program, marital equality theory, system theory, strong family perspective, stress coping theory, anger control theory, modified Couple Communication Program, marriage enrichment methods, 7 session program was developed. The contents of every session were Reviewing Marriage Relationships, Coping Role Stress, Marital Equality, Self Expression & Speaking, Understanding Spouse & Listening, Anger Control& Resolving Conflict, and Enhancing Marital Relations. The effectiveness of this program was evaluated by pretest, post test, and follow-up 1 month later through 35 rural couples(women farmers and their husband) and it was analyzed by paired t-test and qualitative evaluation was also investigated. The major results were as follows : This program was effective in improving their self-esteem, marital satisfaction, coping role stress & conflicts, and husband's egalitarian role attitude & practice. The results suggested the program had also Positive impacts on the marital equality and relationships. Future research and practical implications were added.

A Study of the Relations between the Profession and the State: Focusing on the Korean Oriental Medicine Doctors' Organization (전문직과 국가의 관계 -한국 한의사 조직을 중심으로-)

  • Eam Hyun Sup;Lee Hyun Ji;Shin Soon Shik
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.16 no.1
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    • pp.58-61
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    • 2002
  • The degree of doctors' autonomy is decided by the relations between the profession and the state. The exclusive right required by doctors is based on knowledge, but it is most often decided by the relations between the profession and the state. The critical factor affecting the status of the medical profession is the span of its control on medical related areas. Therefore, the status of doctors depends on the degree of institutionalization and the span of their control. The status of Korean Oriental Medicine doctors has been largely affected by the governments medical policies. The dramatic change of the status of Korean Oriental Medicine in modern Korea dearly shows the effects of medical policy on the status of a medical system. Under the plural medical system every medical group lobbies for more favorable medical policies. Korean Oriental Medicine doctors have secured an enhanced status in government and expanded the range of medical insurance coverage. Also, they have accomplished the standardization of knowledge in their efforts to expand it. These achievements are the most important aspects of the professionalization of Korean Oriental Medicine. Therefore, we can conclude that the conflicts between Korean Oriental Medicine doctors and government representatives have had significantly positive effects on the professionalization of Korean Oriental Medicine.

A study on Restructuring the Street Network for the Improvement of Traffic Problems in Metropolitan Central Area (대도시 도심교통문제의 개선을 위한 가로망체계의 개편방안에 관한 연구)

  • 임강원;임강원
    • Journal of Korean Society of Transportation
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    • v.5 no.2
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    • pp.81-95
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    • 1987
  • In line with the continued growth of car ownership, the traffic problems in central area of metropoles such as Seoul would become increasingly degraded. comparing with most western cities, the problems in Seoul are characterized by the improportionately high rates of intersection delay, station congestion, traffic accidents caused by weaving conflicts and pedestrian congestion. It is caused by the lack of flexibility I street network, which is prerequisite for upholding the efficacy of traffic management and control, resulted from the simplicity of network graph in terms of connectivity, street density and distribution by width. This pattern has been resulted from the prolonged policy pursuing the street-widening of the nagging bottleneck in such a short period since the 1950s, comparing that most western cities had undergone over several centuries an age of horse-and-vehicle transportation. In order to improve the expected traffic problems in central area over the coming periods of motorization, it is imperative to restructure the street network in Central Seoul so that the efficacy of traffic management and control may be operative. Based upon the long-range planning the street network should be restructured by stages so that cenral traffic may be controled by one-way operation and most through-traffic be detoured around fringe area.

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