• Title/Summary/Keyword: slack control

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Mitigation of Budgetary Slack Behavior Through Islamic Religiosity and Budget Control: An Empirical Study of Indonesian Local Companies

  • LAKASSE, Syarifuddin;HAMZAH, Muh. Nasir;ABDULLAH, M. Wahyuddin;SYAHRUDDIN, Syahruddin
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.8
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    • pp.355-363
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    • 2021
  • This study aims to obtain empirical evidence about the cognitive effect of Islamic religiosity and budget control in reducing budgetary slack behavior. This study involved 176 managers as respondents in 10 local companies in Eastern Indonesia. Managers who are respondents in thus study work and are spread across 14 provinces in Indonesia. Probability sampling method has been used for this study from the total population with certain criteria. Data analysis has been done using Warp PLS-SEM technique. The results showed that Islamic religiosity cognitive and budget control had a direct negative effect on budgetary slack behavior. The two variables also fully mediate the relationship between participatory budgeting and budget-based compensation schemes on the behavior of budgetary slack in a negative and significant way. These results mean that the two variables are proven to reduce budgetary slack behavior. This empirical evidence at the same time corrects the agency theory's assumptions about opportunistic human nature and always maximizes every potential economic profit. In addition, the results also show that Islamic religiosity cognitive is stronger in reducing budgetary slack behavior. These results can be used to improve the company's budget control system by incorporating elements that motivate religious goals so that it is more effective in reducing budgetary slack behavior.

Slack Control for Laying a Submarine Cable (해저 케이블의 포설을 위한 여장제어)

  • Yang, Seung-Yun
    • Journal of Institute of Control, Robotics and Systems
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    • v.7 no.6
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    • pp.502-508
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    • 2001
  • In this paper, slack is computed from a comparison of the cable pay out rate and the ship ground speed in accordance with laying conditions, and the speed controller of the cable engine based on an H(sub)$\infty$ servo control id designed for adjusting the cable engine in order to lay a desired amount of slack. The controller is designed for robust tracking of the cable engine under disturbances. The performance of the designed controller is evaluated by computer simulation, and, consequently, a feasibility study for laying the submarine cable stably is done through analyzing simulation results.

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A Study on the Curvilinear Relationship Between Slack and Innovation : Focus on Moderating Effect of Network Diversity (조직의 여유자원과 혁신간의 비선형관계에 관한 연구 : 네트워크 다양성 조절효과)

  • Kang, Sora;Han, Su Jin
    • Journal of Information Technology Applications and Management
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    • v.27 no.6
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    • pp.181-196
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    • 2020
  • Based on the resource-based perspective, this study seeks to understand the relationship between the organizational slack and innovation, and to demonstrate that there exists a difference in the influence of the organizational slack according to the type of innovation by dividing the types of innovation into exploratory and exploitative innovations. They also want to understand the role that network diversity plays in the relationship between organizational slack and innovation. For this purpose, hypothesis and research models were presented based on resource-based perspectives and empirical analysis was conducted on 171 companies. The analysis confirmed that the impact of organizational slack on exploitative innovation is linear, not non-linear, as expected. In other words, the more resources available, the more productive the enterprise is, and the more resources available to the organization have a positive impact on the innovation. On the other hand, exploratory innovation represented an inverse U-shaped relationship between organizational slack and nonlinearity as expected. The control effect of network diversity was only seen in the relationship between organizational slack and exploratory innovation. Through this study, it provides implications such as the importance of network diversity, which is a relationship between companies, and the difference in the utilization of organizational slack according to the type of innovation.

Laying control of a submarine cable (해저 케이블의 포설제어)

  • 양승윤;조상훈;최준호;정찬희
    • Journal of the Korea Institute of Military Science and Technology
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    • v.4 no.1
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    • pp.73-82
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    • 2001
  • In this Paper, slack is computed from a comparision of the cable pay out rate and the ship ground speed in accordance with laying conditions, and the speed controller of the cable engine based on an $H^{\infty}$ servo control is designed for adjusting the cable engine in order to lay a desired amount of slack. The controller is designed to have the robust tracking property of the cable engine under disturbances. The performance of the designed controller is evaluated by computer simulation, and, consequently, a feasibility study for laying the submarine cable stably is done through analyzing simulation results.

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Optimistic Concurrency Control considering Slack Time in RTDB (RTDB에서의 여유시간을 고려한 낙관적 동시성 제어 기법 연구)

  • 김병곤;이순미;임해철
    • Proceedings of the Korean Information Science Society Conference
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    • 1998.10b
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    • pp.66-68
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    • 1998
  • 실시간 데이터베이스 시스템에 있어서 동시성 제어는 제한시간을 달성하기 위한 중요한 요소중의 하나이다. 본 연구에서는 효율적인 실시간 데이터베이스 동시성 제어를 위한 알고리즘을 제안하다. 이 알고리즘은 실시간 데이터베이스에 적합한 낙관적 동시성 제어 기법(Optimistic Concurrency Control)을 근간으로 하며, 종료 트랜잭션의 여유시간(slack time)을 고려하여 좀더 많은 수행 트랜잭션의 마감시간 달성에 목표를 두었다.

Integrated Design of Rotary UAV Guidance and Control Systems Utilizing Sliding Mode Control Technique

  • Hong, You-Kyung;Kim, You-Dan
    • International Journal of Aeronautical and Space Sciences
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    • v.13 no.1
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    • pp.90-98
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    • 2012
  • In this paper, the Integrated Guidance and Control (IGC) law is proposed for the Rotary Unmanned Aerial Vehicle (RUAV). The objective of the IGC law is to consider the nonlinear dynamic characteristics of the RUAV and to design a guidance law which takes into consideration the nonlinear relationship between kinematics and dynamics. In order to control the RUAV system, sliding mode control scheme is adopted. As the RUAV is an under-actuated system, a slack variable approach is used to generate the available control inputs. Through the Lyapunov stability theorem, the stability of the proposed IGC law is proved. In order to verify the performance of the IGC law, numerical simulations are performed for waypoint tracking missions.

Improvement of Variable Renewable Energy Penetration of Stand-Alone Microgrid Hosting Capacity by Using Energy-Storage-System Based on Power Sensitivity

  • CHOI, DongHee
    • Journal of Advanced Information Technology and Convergence
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    • v.10 no.2
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    • pp.91-101
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    • 2020
  • Recently, the demand for high penetration of variable renewable energy (VRE) penetration in a power system is increased. In consequence, distribution systems including microgrids confront the increased installation of VRE-based distributed generation. Despite of the high demand of VRE-based distributed generation in a distribution system, the installation of photovoltaic (PV) system in a distribution system has been restricted by various problems. In other words, the hosting capacity for high VRE penetration in a distribution system is limited. This paper analyzes the improvements of hosting capacity VRE penetration of stand-alone microgrid (SAMG) with energy storage system (ESS) by considering virtual-slack (VS) control based on power sensitivity. With the pre-defined power sensitivity, the ESS operates as virtual slack in the SAMG by controlling its bus voltage and phase angle indirectly. Therefore, the ESS enables the increase of VRE penetration in the SAMG. The proposed VS control is realized by analyzing the ESS as a virtual slack in power flow analysis based on power sensitivity. Then its validity is demonstrated with the case study on the SAMG in South Korea with practical data.

Optimization of Fuel-cell stack design using CFD-ACE (CFD-ACE를 이용한 연료 전지 냉각판의 최적 설계)

  • 홍민성;김종민
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 2003.10a
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    • pp.14-18
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    • 2003
  • Feul-cell system consists of fuel reformer, stack and energy translator. Among these parts, slack is a core part which produces electricity directly. In order to set a stack module, fabrication of appropriate stack, design of water flow path in stack, and control of coolant are needed. Especially, water or air is used as a coolant to dissipate heat. The different temperature of each electric cells after cooling and the high temperature of the stack affect the performance of the stack, Therefore, it is necessary that the relationship between coolant, healing rate, width of slack, properties of stack, and the shape of water flow path must be understood. For the optimal design, the computational simulation by CFD-ACE has been conducted and the resulting database has been constructed.

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Effectiveness of a Vehicle Restraint System in Frontal Crash (정면 충돌시 차량 구속 시스템의 효과)

  • Lee, Dong-Jae;Oh, Kwang-Seok;Son, Kwon
    • 제어로봇시스템학회:학술대회논문집
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    • 2000.10a
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    • pp.314-314
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    • 2000
  • This study deals with the analysis of the effectiveness of a safer belt in frontal crash. ATB, Articulated Total Body, program is used as a dynamics solver of the occupant model. ATB is a public code, however, the program is somewhat cumbersome to use due to lack of sufficient user interface. A preprocessor and a postprocessor are, therefore, developed for a user friendly graphic interface in Windows environment. Dialog boxes are used for an interface with GEBOD, Generator of Body Data, for human anthropometry and with ADAMS for vehicle dynamics. It is found through three test simulations that simulated results are in good agreement with those obtained by ATB. The effect of the initial slack of safety belt is investigated for frontal crash using the developed program.

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A Frequency Selection Algorithm for Power Consumption Minimization of Processor in Mobile System (이동형 시스템에서 프로세서의 전력 소모 최소화를 위한 주파수 선택 알고리즘)

  • Kim, Jae Jin;Kang, Jin Gu;Hur, Hwa Ra;Yun, Choong Mo
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.4 no.1
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    • pp.9-16
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    • 2008
  • This paper presents a frequency selection algorithm for minimization power consumption of processor in Mobile System. The proposed algorithm has processor designed low power processor using clock gating method. Clock gating method has improved the power dissipation by control main clock through the bus which is embedded clock block applying the method of clock gating. Proposed method has compared power consumption considered the dynamic power for processor, selected frequency has considered energy gain and energy consumption for designed processor. Or reduced power consumption with decreased processor speed using slack time. This technique has improved the life time of the mobile systems by clock gating method, considered energy and using slack time. As an results, the proposed algorithm reduce average power saving up to 4% comparing to not apply processor in mobile system.