• Title/Summary/Keyword: Priority-based control

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Prioritizing Freeway Segments for Variable Speed Limit (VSL) Operations based on Traffic Safety (교통안전을 고려한 고속도로 가변제한속도 운영구간 우선순위 결정 연구)

  • Choi, Sae-Ro-Na;Lee, Kee-Yong;Oh, Cheol
    • Journal of Korean Society of Transportation
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    • v.30 no.3
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    • pp.57-70
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    • 2012
  • Variable speed limit(VSL) is a useful speed management tool for alleviating traffic congestion and enhancing traffic safety. The purpose of this study is to identify promising freeway segments for safety enhancement through VSL operations. An ordered probit model was adopted to capture factors affecting freeway crash severity that can be used to support decision making for selecting the promising segments. Pseudo elasticity and marginal effects, which are outcomes of the ordered probit analysis, were used to determine priority of promising segments for traffic safety. The results of this study would be useful in installing VSL systems and developing traffic control and operations strategies in practice.

A Study on the Critical Success Factors for the Efficient Management of Defense Acquisition Program (효율적인 무기체계 획득을 위한 사업 관리 핵심성공요인 연구)

  • Jeon, Nam-Hee;Kim, Byung-Sam;Kim, Dong-Ho;Gim, Gwang-Yong
    • Journal of the military operations research society of Korea
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    • v.36 no.2
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    • pp.53-69
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    • 2010
  • The long-term purpose of Military Acquisition Program Management (MAPM) is to fulfill requested performance, budget, and timing of military capability building. The Defense Acquisition Program Administration was established in 2006 and it adopted Integrated Control System. Moreover, there have no much studies done to examine the condition of Defense Capability Improvement Project in Korea through an empirical research although there are sixty one organizations are operating currently under Defense Capability Improvement Project. The objective of this study is to recognize Military Acquisition Program Management as a single project and to critically review relationship between Critical Success Factors (CSF) and Military Acquisition Program Management. Accordingly, three determinants to lead to successful Military Acquisition Program Management are "Communication" "User Participation" and "User Requirement." This study also demonstrates that Critical Success Factors have distinctive influences on successful Military Acquisition Program Management based on characteristic, size and phase of project. In retrospect, it is meaningful that Integrated Project Team (IPT) could classify priority of management according to characteristic, size and phase of project in the course of implementation.

The Effects of Group Art Therapy Using Fabric Medium on Emotional Intelligence of Middle School Students (섬유매체를 활용한 집단미술치료가 중학생의 정서지능에 미치는 효과)

  • Park, Chi-Hong;Kim, Gab-Sook
    • Journal of Families and Better Life
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    • v.28 no.3
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    • pp.61-71
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    • 2010
  • This thesis seeks to inquire into the effect of group art therapy using a fabric medium on the emotional intelligence of middle school students. This application of fabrics to group art therapy is helpful in terms of gender roles and equality from an educational aspect and can help activate and control positive sentiment. Therefore, it was believed to have a positive effect on emotional intelligence. The subjects were 28 boys and girls who were students of the Supportive Project for the Priority Region of Educational Welfare Investment. The measurement tool is a revision of the emotional intelligence test of Mun Yong-Rin (1997), which itself was based on the emotional intelligence model of Mayer and Salovey (1997). The data materials are analyzed by SPSS (ver. 17.0 for Windows). To test the homogeneity of the groups, the Mann-Whitney U test was carried out, and to analyze the effect of this program, the Wilcoxon signed ranks test was carried out. The results are as follows. This program had a positive effect on the emotional intelligence of both male and female students, especially on their empathy and activation of thinking among the subcategories. This study has significance in that it verifies the effect of the improvement of emotional intelligence by way of group art therapy using fabrics, adding a fabric medium to the art medium. As the subject group was restricted to 28 adolescents in the Supportive Project, it is not easy to generalize the achievement to the entiresphere of group art therapy.

Estimating the Burden of Cancers Attributable to Smoking Using Disability Adjusted Life Years in Indonesia

  • Kristina, Susi Ari;Endarti, Dwi;Sendjaya, Natalia;Pramestuty, Octy
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.3
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    • pp.1577-1581
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    • 2016
  • Tobacco use is a well-established risk factor for many types of cancers. Recent data on selected cancer incidence and mortality related to smoking in the Indonesian population are provided in this study. Morbidity and mortality data were derived from GLOBOCAN 2012 and the population attributable fraction (PAF) was estimated using the standard methodology developed by the World Health Organization. Using these data, we calculated disability adjusted life year (DALY) values for smoking-related cancer. The DALY was estimated by summation of the years lived with disability (YLD) and years life lost due to premature death (YLL). The cancer cases related to smoking in Indonesia numbered 45,132, accounting for 35,580 cancer deaths. The morbidity and mortality of lung cancer can be considered as the highest priority in both men and women. Furthermore the greatest YLD due to smoking in Indonesian men and women were from pancreas and lung cancers. For YLL among men, the highest years lost were from lung and liver cancers. On the other hand, among women lung oral cavity and lip were most important. Based on the DALY indicator, burden priorities for Indonesian men were lung cancer (298,980), liver cancer (60,367), and nasopharynx (46,185), while among Indonesian women they were lung cancer (34,119), cervix uteri (9,213) and pancreas cancer (5,433). In total, Indonesian burden of cancers attributed to smoking was 638,682 DALY. This study provides evidence about the burden of cancers caused by smoking as a rational basis for initiating national tobacco control policies in Indonesia.

Hybrid Link State Update Algorithm in QoS Routing (하이브리드 QoS 라우팅 링크 상태 갱신 기법)

  • Cho, Kang Hong
    • Journal of the Korea Society of Computer and Information
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    • v.19 no.3
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    • pp.55-62
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    • 2014
  • This paper has proposed Hybrid QoS Routing Link State Update(LSU) Algorithm that has had a both advantage of LSU message control in periodic QoS routing LSU algorithm and QoS routing performance in adaptive LSU algorithm. Hybrid LSU algorithm can adapt the threshold based network traffic information and has the mechanism that calculate LSU message transmission priority using the flow of statistical request bandwidth and available bandwidth and determine the transmission of the message according to update rate per a unit of time. We have evaluated the performance of the proposed algorithm and the existing algorithms on MCI simulation network using the performance metric as the QoS routing blocking rate and the mean update rate per link, it thus appears that we have verified the performance of this algorithm that it can diminish to 10% of the LSU message count.

An Empirical Study on the Forwarder's Satisfaction to Service Quality (해공복합운송 서비스품질이 포워더의 만족에 미치는 영향)

  • Choi, Dong-Oh
    • Journal of Korea Port Economic Association
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    • v.28 no.2
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    • pp.195-211
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    • 2012
  • As the globalisation of corporate's managemental environment, all parts of logistics such as procurement, production and sales are globalized. The ways of transportation in Korea and Japan, where are difficult to use land-transportation, are sea-transportation and air-transportation. Sea & air is a way of the international transportation which is combined by Sea and Air to reduce the transportation fee and shorten the delivery time. The main body of multimodal transportation service is the corporate, actual carrier who undertakes the actual transport. It is essential to establish service quality to maintain their going concern. In other words, the actual carrier has to emphasize the importance of service quality to forwarder tan any other business conditions. In this study, we examine the determinants of service quality for actual carrier in multimodal transportation. Through the multi-regression analysis based on SERVPERF by Cronin and Taylor (1992), we analyze the service quality dimensions of actual carrier. Also we examine the relations between the determinants and customer's satisfaction. Using statistical hypothesis testing, the determinants of service quality are reliability, responsiveness, assurance, tangibles, and we could look into the factors which the actual carrier should control with priority.

Epidemiology and Trend of Cancers in the Province of Kerman: Southeast of Iran

  • Keyghobadi, Naeimeh;Rafiemanesh, Hosein;Mohammadian-Hafshejani, Abdollah;Enayatrad, Mostafa;Salehiniya, Hamid
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.4
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    • pp.1409-1413
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    • 2015
  • Background: According to increase in elderly populations, and change in lifestyle and cancer-causing behavior, the global burden of cancer is increasing. For prevention and control of disease, knowledge of population statistics of cancers and their trends is essential. This study aimed to investigate the epidemiology and trends of cancer in the province of Kerman: southeast of Iran. Materials and Methods: This analytical and cross-sectional study was carried out based on cancer registry data at the Disease Management Center of the Health Ministry from 2004 to 2009 in the province of Kerman in Iran. Common cancers were defined as the number of reported cases and standardized incidence rates. To compute the annual percentage change (APC), joinpoint 4.1.1.1 software was applied. Results: Of 10,595 registered cases, 45.3% (4802 cases) were in women and 56.7% (5,793 cases) occurred in men. The standardized incidence rates for both females and males were increasing during the six years studied. The most common cancers in both sexes during six years of studied were skin (13.4%), breast (9.35%), bladder (7.8%), stomach (7.45%), leukemia (7.05%), colorectal(5.57%), lung(4.92%), trachea(3.51%) and prostate(2.48%). Conclusions: Our findings revealed that the cancer incidence is demonstrating increasing trends in both sexes in the province of Kerman. This may be because of changes in lifestyle, increasing exposure to risk factors for cancer and increase of life expectancy. If this is the case, increasing public awareness of cancer risk factors is a high priority, together with introduction of large-scale screening techniques.

Design of the Automotive Gateway Based on a Mapping Table (매핑 테이블 기반의 자동차용 게이트웨이 설계)

  • Oh, Se-Chun;Kim, Eui-Ryong;Kim, Young-Gon
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.41 no.12
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    • pp.1959-1968
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    • 2016
  • The recent automobiles, a number of ECU inside the vehicle has been used. Also, each ECU is connected to different types of networks in accordance with the characteristics. Therefore, efficient data exchange between discrete network has emerged as a very important element. The gateway is responsible for the ability to exchange data between discrete network. In this study, we propose the new gateway algorithm to provide the structure of the mapping table to improve the efficiency of data exchange between discrete network. Also it provides a structure of a new gateway algorithm with a function of adjusting the priority of the data to be transmitted to another network arbitrarily. Moreover, the proposed gateway structure may simultaneously convert the transmission data input from a particular network to multiple networks. Another advantage is easy to change the entire data structure only if we change the table structure in the gateway.

Priority-based Intelligent Uplink Random Access Scheme for Fourth-generation Cellular Systems and Its Standardization (4세대 이동통신시스템을 위한 우선순위 기반 지능적 상향링크 랜덤 접속 방법 및 표준화)

  • Moon, Jung-Min;Lee, Ho-Won;Cho, Dong-Ho
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.36 no.12B
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    • pp.1623-1635
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    • 2011
  • Fourth-generation (4G) cellular communication systems must provide different quality-of-service (QoS) to users according to the service type, membership class, and usage case of each user. For the purpose of user's QoS differentiation, we propose an enhanced uplink random access scheme for bandwidth request. More specifically, we divide a bandwidth request channel into two parts: One is a primary region and the other is a secondary region. Then, each region has a unique minimum access class that allows only specific users to perform random access through that region. By doing so, we can reduce collision probability and increase the success probability of bandwidth request. From the perspective of standardization, we presented this scheme in the IEEE 802.16m Session #66 held on March 2010. As a result, the concept of the proposed scheme and required messages were defined in the 802.16m standard.

Design of Shared Memory Controller Device Driver in Embedded System (임베디드 시스템에서의 공유 메모리 컨트롤러 디바이스 드라이버 설계)

  • Moon, Ji-Hoon;Oh, Jae-Chul
    • The Journal of the Korea institute of electronic communication sciences
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    • v.9 no.6
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    • pp.703-709
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    • 2014
  • In the AMP(Asymmetric Multiprocessing) based dual core using core-specific operating system in a single processor system, shared memory method is used to send data between processors in dual core. To used shared memory in different operating systems, there is a problem of needing to solving the issue of message communication and synchronization between the two operations systems. In this paper, separate memory controller was used for data sharing between different processor cores in dual core environment. This controller can designate two slave ports to allow simultaneous access from two processors, and in the case of process data simultaneously by two processors, priority order of slave ports is determined through memory mediator. When sending data from A to B processor, SRAM area was logically separated into 8 pages. It allowed using memory area from multiple processes with the size of 4KByte per page, and control register with the size of 4Byte was used to discern the usability of current page.