• Title/Summary/Keyword: precedence

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Study on the optimum operation system of Sequencing Batch Reactor (연속 회분식 반응조의 최적 운전시스템에 관한 연구)

  • Eom, Tae Kyu;Ko, Eun Joo
    • Journal of Korean Society of Water and Wastewater
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    • v.13 no.4
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    • pp.54-61
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    • 1999
  • SBR process used to evaluate the removal of organics, nitrogen and phosphorus on the basis of a report of research on a precedence at various operation cycle and condition change. Effluent concentration of COD were 50mg/l, 50mg/l, 90mg/l respectively, The removal rates of COD were nearly over 95% at Run 1, 2 and 4. But at Run 3, Effluent concentration of COD was 255.0mg/l, The removal rate of COD was 87% at Run 3. As Oxic/Anoxic rate was fixed and operating cycle of Oxic/Anoxic was changed, the removal rates of T-N were 74.7%, 46.9%, 28.5%, 63.3% respectively at Run 1~4. The case of Run 1 was best result. The removal rates of T-P was appeared in proportion to T-N removal rates and rest of $NO_2-N$. The removal rates of T-P were 51.2%, 35.5%, 41.5%, 51.9% respectively. The removal rates of COD, T-N, T-P were influenced on the change of SBR operation cycle. As organic loading rate was $1.43kgCOD/m^3day$ and C/N ratio was 3.0, operation cycle of Run 1 was best condition of T-N removal rates and T-P removal.

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A Basic Survey Study on the Research Tendency for Green Interior Architecture (친환경 실내건축 연구 성향에 관한 조사 분석 연구)

  • Chong, Jae-Uk
    • Korean Institute of Interior Design Journal
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    • v.20 no.6
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    • pp.11-18
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    • 2011
  • Including interior architecture, diverse fields of study for eco-friendly environment is in progress due to the world's crisis consciousness of global environment. And nevertheless, practical use of the research results are still low and systematical problems of the studies are inevitable reality. Thus, this study focused on to the enbodiment of green interior architecture study understanding the problems of precedence studies to make suggestion for the future direction and balancing green interior architecture study seeking for better motivation. Analysing results of the precedent studies indicates that the existing studies loss its diversity and concentrated in the narrow based directions. For the enbodiment of green interior architecture, not simply immerse existing planning method found from case study, the study need to perform in overall areas of green interior architecture and diversify its direction. Besides space designer, user's consciousness are also important results to form a new paradigm of eco-friendly environment. For the applications and use of the study results as the design factor in green interior architecture, first and the most important stept is to innovate attitude towards the nature and shift of consciousness through education as well as the relative studies of design and planning realm to drive both technical, and non-technical design factors are highly demanded.

Employee Performance Optimization Through Transformational Leadership, Procedural Justice, and Training: The Role of Self-Efficacy

  • KUSUMANINGRUM, G.;HARYONO, Siswoyo;HANDARI, Rr. Sri
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.12
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    • pp.995-1004
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    • 2020
  • This study aims to analyze the effect of transformational leadership (TL), procedural justice (PJ), and training (T) on employee performance (EP) mediated by self-efficacy (SE). The object of this research is Rumah Sakit Umum Daerah (RSUD) M.Th. Djaman, a hospital in Sanggau Regency, while the subjects are the institution's staff. Data collection search uses purposive sampling with a total of 120 samples. Data are obtained through questionnaires distributed directly to respondents using the Google Form application. Data analysis techniques used in this study include standard error of mean (SEM) with AMOS software version 24.00. Methods use to test validity and reliability of data include Confirmatory Factor Analysis (CFA), Construct Reliability (CR) and VE. The results of the analysis show that only training has a significant effect on self-efficacy, and self-efficacy has a significant effect on employee performance. Also, self-efficacy is proven to mediate the role of training on employee performance; the other hypotheses are not significant. Training is the most prominent positive factor affecting self-efficacy and self-efficacy has a significant effect on employee performance at RSUD M.Th. Djaman. The results of this study can be used as a reference by management in determining what policy priorities should take precedence.

Real-Time Characteristics Analysis and Improvement for OPRoS Component Scheduler on Windows NT Operating System (Windows NT상에서의 OPRoS 컴포넌트 스케줄러의 실시간성 분석 및 개선)

  • Lee, Dong-Su;Ahn, Hee-June
    • Journal of Institute of Control, Robotics and Systems
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    • v.17 no.1
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    • pp.38-46
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    • 2011
  • The OPRoS (Open Platform for Robotic Service) framework provides uniform operating environment for service robots. As an OPRoS-based service robot has to support real-time as well as non-real-time applications, application of Windows NT kernel based operating system can be restrictive. On the other hand, various benefits such as rich library and device support and abundant developer pool can be enjoyed when service robots are built on Windows NT. The paper presents a user-mode component scheduler of OPRoS, which can provide near real-time scheduling service on Windows NT based on the restricted real-time features of Windows NT kernel. The component scheduler thread with the highest real-time priority in Windows NT system acquires CPU control. And then the component scheduler suspends and resumes each periodic component executors based on its priority and precedence dependency so that the component executors are scheduled in the preemptive manner. We show experiment analysis on the performance limitations of the proposed scheduling technique. The analysis and experimental results show that the proposed scheduler guarantees highly reliable timing down to the resolution of 10ms.

A study on the clothing conformity behavior of female consumers - focused on the vanity and clothing consumption value - (성소비자의 의복 동조행동에 대한 연구 - 허영심, 의복소비가치를 중심으로 -)

  • Lim, Kyung-Bock
    • Journal of the Korea Fashion and Costume Design Association
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    • v.20 no.1
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    • pp.137-150
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    • 2018
  • The purpose of this study is to closely describe the meaning of the clothing conformity behavior of female consumers in today's society. In this process, the vanity scale was used as a precedence variable, on the other hand, clothing consumption value and information search behavior was used as outcome variable, which has an effect on the clothing conformity behavior. The subjects were 300 females who live in Seoul and Kyung-gi. The data were analyzed by Cronbach's ${\alpha}$, Factor analysis, Regression and ANOVA using SPSS program. The results were as follows. First, the vanity scale was classified into four factors, a concern and a positive view for each achievement and appearance. Clothing consumption value was divided into five factors; fashion, appearance attractiveness, emotional, social and functional clothing consumption value. Clothing conformity behavior was classified into three factors; normal, informational, and identified conformity factor. Second, various vanity scales influenced the clothing conformity behavior factors. In particular, concern for achievement and appearance were more important factors to clothing conformity behavior. Among six clothing consumption values, fashion was a more significant factor affected by clothing conformity behavior. Also, various conformity behaviors influenced the information search behaviors. Finally, according to age, school record, and pocket money, there were significant differences in clothing conformity behaviors and vanity factors.

The Development of Self Directed Astronomy Learning Program Based On the Web (웹을 기반으로 한 자기 주도적 천문학 학습 프로그램 개발)

  • Yoo, Kyoung-Ae;Ko, Byung-Oh
    • Journal of The Korean Association of Information Education
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    • v.5 no.3
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    • pp.432-442
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    • 2001
  • It is necessary to Self Directed Astronomy Learning based on web to bring up individuality and creativity. Accordingly, the contents of this study is constructed by Astronomy which connects with our life but unable to observe actually. The contents is dynamic animation for learner's interest. The learners are able to decide their grade for themselves through the on-line evaluation according to their precedence learning. The Learner is able to evaluate by multiple-choice provide feedback by realtime. The contents is learned by themselves and introduced by the familiar contents in the real life, that is presented as the subject of experiment or observation connected with learning contents in the life.

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The Design and Implementation of Learning Structure for Tutorial Web Courseware (개인교수형 웹 코스웨어의 학습구조 설계 및 구현)

  • Ahn, Sung-Hun;Kim, Dong-Ho;Kim, Tae-Young
    • Journal of The Korean Association of Information Education
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    • v.3 no.2
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    • pp.85-93
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    • 2000
  • The good courseware must have the me끼ts of computer and must be designed according to principles of instruction. Therefore, we propose a model of learning structure for tutorial web courseware on the basis of elaboration theory that can give us the suitable design strategies of contents for web courseware. This model is suited to the level learning and individual learning because it is constructed of six factors - epitome, precedence learning, basis learning, depth learning, summarizer, synthesizer. We also make a tutorial web courseware to apply this model and evaluate effects in comparison with the existing tutorial web coursewares.

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DEVELOPMENT OF TIMING ANALYSIS TOOL FOR DISTRIBUTED REAL-TIME CONTROL SYSTEM

  • Choi, J.B.;Shin, M.S.;M, Sun-Woo
    • International Journal of Automotive Technology
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    • v.5 no.4
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    • pp.269-276
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    • 2004
  • There has been considerable activity in recent years in developing timing analysis algorithms for distributed real-time control systems. However, it is difficult for control engineers to analyze the timing behavior of distributed real-time control systems because the algorithms was developed in a software engineer's position and the calculation of the algorithm is very complex. Therefore, there is a need to develop a timing analysis tool, which can handle the calculation complexity of the timing analysis algorithms in order to help control engineers easily analyze or develop the distributed real-time control systems. In this paper, an interactive timing analysis tool, called RAT (Response-time Analysis Tool), is introduced. RAT can perform the schedulability analysis for development of distributed real-time control systems. The schedulability analysis can verify whether all real-time tasks and messages in a system will be completed by their deadlines in the system design phase. Furthermore, from the viewpoint of end-to-end scheduling, RAT can perform the schedulability analysis for series of tasks and messages in a precedence relationship.

Characteristics of surface pollutants on stone materials and its cleaning measures in Gyeongju Soekbinggo (경주석빙고 구성석재에 형성된 표면오염물의 특징과 그 제거방안)

  • Do, Jinyoung
    • 한국문화재보존과학회:학술대회논문집
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    • 2005.03a
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    • pp.71-88
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    • 2005
  • With biological organism brown pollutants layers are thickly formed on inner stone materials in Gyeongjuseokbinggo(Ice storage in Gyeongju). Some simples were taken from this layer and its chemical composition, mineral composition, salt and microstructures were analyzed. This study shows that the pollutants layer can be removed easily, because it attached softly in stone surface. But because of its serious weathering state the stone surface also can be removed during the removing process. The origins of brown layer are assumed to be the soil in the mound over the Seokbinggo and the coarse sandy soil in the entrance. For the preservation of the Seokbinggo Waterproof and replacement of the coarse sandy soil should take precedence over the remove works. Subsequently moistureproof works should be enforced.

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Investment Scheduling of Maximizing Net Present Value of Dividend with Reinvestment Allowed

  • Sung, Chang-Sup;Song, Joo-Hyung;Yang, Woo-Suk
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2005.05a
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    • pp.506-516
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    • 2005
  • This paper deals with an investment scheduling problem of maximizing net present value of dividend with reinvestment allowed, where each investment has certain capital requirement and generates deterministic profit. Such deterministic profit is calculated at completion of each investment and then allocated into two parts, including dividend and reinvestment, at each predetermined reinvestment time point. The objective is to make optimal scheduling of investments over a fixed planning horizon which maximizes total sum of the net present values of dividends subject to investment precedence relations and capital limit but with reinvestment allowed. In the analysis, the scheduling problem is transformed to a kind of parallel machine scheduling problem and formulated as an integer programming which is proven to be NP-complete. Thereupon, a depth-first branch-and-bound algorithm is derived. To test the effectiveness and efficiency of the derived algorithm, computational experiments are performed with some numerical instances. The experimental results show that the algorithm solves the problem relatively faster than the commercial software package (CPLEX 8.1), and optimally solves the instances with up to 30 investments within a reasonable time limit.

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