• Title/Summary/Keyword: Control mechanisms

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Effective Control Mechanisms in a BPO(Business Process Outsourcing) Arrangement

  • Kim, Hyang-Bin;Kim, Gyeung-Min
    • 한국IT서비스학회:학술대회논문집
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    • 2003.11a
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    • pp.167-174
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    • 2003
  • BPO(Business Process Outsourcing) is defined as outsourcing the management and operation of the IT intensive business process to another company that has specialty in managing the process. In the outsourcing arrangement, the design of the effective control mechanisms is essential to the success of the outsourcing. The purpose of this study is to investigate the effective control mechanisms between two organizations in a BPO arrangement. The specific research questions put forth are as follows: (1)What are the control issues in relation to BPO? (2)How the control mechanisms in the successful BPO arrangement are designed? and (3)What kind of effect or change do the designed control mechanisms have on the buyer's job process in terms of BPO? The results of this study found that the following mechanisms are effected in BPO setting: (1)Automation (2)Standardization & Modularity (3)Embedding (4)Balanced control (5)control segmentation (6)hierarchy (7)output/behavior control 8)back-end control 9)informal control.

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Congressional Control of Bureaucracy in the United States: Ex Ante vs. Ex Post Control Mechanisms

  • Park, Hong Min
    • American Studies
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    • v.43 no.1
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    • pp.115-143
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    • 2020
  • The U.S. Congress has been known to effectively control the bureaucracy. On one hand, Congress adjusts the degree of discretion provided to the bureaucracy when making agencies or legislation: ex ante control. On the other hand, it also performs the oversight activities to punish or correct undesirable behaviors of bureaucrats: ex post control. While the dynamics of each control mechanism is widely examined theoretically, few have attempted to empirically investigate this with a special attention to partisan politics in Congress. I attempt to fill this gap by measuring the two types of control mechanisms, testing theoretical assertions, and analyzing the dynamics under the two control mechanisms.

Structural control of a steel jacket platform

  • Abdel-Rohman, Mohamed
    • Structural Engineering and Mechanics
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    • v.4 no.2
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    • pp.125-138
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    • 1996
  • This paper deals with the application of certain active and passive control mechanisms to control the dynamic response of a steel jacket platform due to wave-induced forces. The forces are estimated using the nonlinear Morison equation which provides nonlinear self-excited hydrodynamic forces. The influence of these forces on the response of a structure without and with vibration control mechanisms is demonstrated using a steel jacket platform as a simple example.

An Empirical Study on B2B Governance Mechanisms and Relationship Outcomes in Franchise Systems (B2B 거래관계에서 통제메커니즘과 관계성과에 대한 연구 : 프랜차이즈 채널을 중심으로)

  • Yi, Ho-Taek
    • Journal of Distribution Science
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    • v.16 no.11
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    • pp.65-72
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    • 2018
  • Purpose - The purpose of this research is to investigate the effect of ex ante governance mechanisms that can be exercised by franchisers on franchise contract compliance and various relationship outcomes. There are many previous studies on control mechanisms in inter-firm relationship, however, most studies focus on ex post governance mechanisms and identify the effects of behavior control and outcome control on performances. Based on transaction cost theory and agency theory, this study defines the ex ante governance mechanisms of franchisers as contractual completeness and extra contractual incentives. The author have examined the two ex ante control mechanisms on contract compliance, recontract intention, multi-shop running intention and opportunistic behaviors of franchisee. Research design, data, and methodology - In this study, 137 questionnaires of food and beverage franchise stores were collected through a specialized research company. The reliability and validity of the variables were analyzed using SPSS 18.0 and AMOS 18.0 programs and hypotheses were verified through the structural equation modeling. Results - As a result of hypothesis testing, contractual completeness and extra contractual incentives have a positive effect on the contract compliance of the franchisee. It is shown that franchisee's contract compliance has a positive effect on recontract intention and multi-shop running intention and has a negative effect on opportunistic behaviors. Conclusions - This study examines the ex ante governance mechanisms such as contractual completeness and extra contractual incentives, which is relatively rare compared to ex post governance mechanism in B2B relationship. According to the results of this research, these two tools can be used as ex ante control mechanisms for franchise headquarters to use their franchisees. In addition, franchisee's contract compliance affects various relationship outcomes between franchisor and franchisees.

Protein and RNA Quality Control by Autophagy in Plant Cells

  • Yoon, Seok Ho;Chung, Taijoon
    • Molecules and Cells
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    • v.42 no.4
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    • pp.285-291
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    • 2019
  • Eukaryotic cells use conserved quality control mechanisms to repair or degrade defective proteins, which are synthesized at a high rate during proteotoxic stress. Quality control mechanisms include molecular chaperones, the ubiquitin-proteasome system, and autophagic machinery. Recent research reveals that during autophagy, membrane-bound organelles are selectively sequestered and degraded. Selective autophagy is also critical for the clearance of excess or damaged protein complexes (e.g., proteasomes and ribosomes) and membrane-less compartments (e.g., protein aggregates and ribonucleoprotein granules). As sessile organisms, plants rely on quality control mechanisms for their adaptation to fluctuating environments. In this mini-review, we highlight recent work elucidating the roles of selective autophagy in the quality control of proteins and RNA in plant cells. Emphasis will be placed on selective degradation of membrane-less compartments and protein complexes in the cytoplasm. We also propose possible mechanisms by which defective proteins are selectively recognized by autophagic machinery.

A study on the control-in-the-small characteristics of a planar parallel mechanism (평면형 병렬 메카니즘의 국소적 제어 특성에 관한 연구)

  • Kim, Whee-kuk;Cho, Whang;Kim, Jae-Seoub
    • Journal of Institute of Control, Robotics and Systems
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    • v.4 no.3
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    • pp.360-371
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    • 1998
  • In this paper, output precision characteristics of a planar 6 degree-of-freedom parallel mechanisms are investigated, where the 6 degree-of-freedom mechanism is formed by adding an additional link along with an actuated joint in each serial subchain of the planar 3 degree-of-freedom parallel mechanism. Kinematic analysis for the parallel mechanism is performed, and its first-order kinematic characteristics are examined via kinematic isotropic index, maximum and minimum input-output velocity transmission ratios of the mechanisms. Based on this analysis, two types of planar 6 degrees-of-freedom parallel manipulators are selected. Then, dynamic characteristics of the two selected planar 6 degree-of-freedom parallel mechanisms, via Frobenius norms of inertia matrix and power modeling array, are investigated to compare the magnitudes of required control efforts of both three large actuators and three small actuators when the link lengths of three additional links are changed. It can be concluded from the analysis results that each of these two planar 6 degrees-of-freedom parallel mechanisms has an excellent control-in-the-small characteristics and therefore, it can be very effectively employed as a high-precision macro-micro manipulator when both its link lengths and locations of small and large actuators are properly chosen.

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Weight Control Mechanisms and Antiobesity Functional Agents (체중조절 기전과 항비만 기능성물질)

  • Ahn, In-Sook;Park, Kun-Young;Do, Myoung-Sool
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.36 no.4
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    • pp.503-513
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    • 2007
  • The obese population has been increasing worldwide and obesity has become one of the socioeconomic problems. Obesity raises more concerns as more studies regarding its direct and indirect relativity to several diseases such as type II diabetes, hypertension, etc. are published. Since leptin, an important signal in the chronic control of food intake and energy expenditure, was discovered in 1994, there has been a great accumulation of knowledge on fighting obesity by facilitating pharmacological and nutritional strategies on the molecular level of the body weight control system. In particular, evidences are accumulating that particular food components affect our physiological function and gene expressions which are associated with body weight control. In this study, we review the four mechanisms for weight control and antiobesity functional agents such as HCA, L-carnitine, CLA, chitosan, calcium supplements capsaicin contained in red pepper, and oriental herbal mixture. We also describe about the efficacy and working mechanism of these functional agents on the basis of antiobesity mechanisms.

Access Control for Secure Access Path (안전한 접근 경로를 보장하기 위한 접근 제어)

  • Kim, Hyun-Bae
    • Journal of The Korean Association of Information Education
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    • v.1 no.2
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    • pp.57-66
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    • 1997
  • The primary purpose of security mechanisms in a computer systems is to control the access to information. There are two types of access control mechanisms to be used typically. One is discretionary access control(DAC) and another is mandatory access control(MAC). In this study an access control mechanism is introduced for secure access path in security system. The security policy of this access control is that no disclosure of information and no unauthorized modification of information. To make this access control correspond to security policy, we introduce three properties; read, write and create.

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Mobility Analysis of Closed-Chain Mechanisms with Lack of Geometric Generality

  • Yi, Byung-Ju;Yi, Dong;Kim, Whee-Kuk
    • 제어로봇시스템학회:학술대회논문집
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    • 2002.10a
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    • pp.117.5-117
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    • 2002
  • . Mobility analysis for overconstrained mechanisms is not clearly explained. . Aims at mobility analysis of overconstrained mechanisms . Representative screws is employed as a tool . A method to identifying the representative screw is introduced . Mobility analysis for several overconstrained parallel mechanisms and mobile robots

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Performance Analysis of ATM Switch Using Dynamic Priority Control Mechanisms (동적 우선순위 제어방식을 사용한 ATM 스위치의 성능분석)

  • 박원기
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.22 no.4
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    • pp.855-869
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    • 1997
  • In this paper, we proposed two kids of dynamic priority control mechanisms controlling the cell service ratio in order to improve the QOS(Quality of Service). We also analyse theoretically the characteristics of cell loss probability and mean cell delay time by applying the proposed priority control mechanisms to ATM switch with output buffer. The proposed priority control mechanisms have the same principles of storing cells into buffer but the different principles of serving cells from buffer. The one is the control mechanism controlling the cell service ratio according to the relative cell occupancy ratio of buffer, the other is the control mechanism controlling the cell service ratio according to both the relative cell occupancy ratio of buffer and the average arrival rate. The two service classes of our concern are the delay sensitive class and the loss sensitive class. The analytical results show that the proposed control mechanisms are able to improve the QOS, the characteristics of cell loss probability and mean cell delay time, by selecting properly the relative cell occupancy ratio of buffer and the average arrival rate. conventional DLB algorithm does not support synchronous cells, but the proposed algorithm gives higher priority to synchronous cells. To reduce synchronous cell loss rate, the synchronous cell detector is used in the proposed algorithm. Synchronous cell detector detects synchronous cells, and passes them cells to the 2nd Leaky-Bucket. So it is similar to give higher priority to synchronous cells. In this paper, the proposed algorithm used audio/video traffic modeled by On/Off and Two-state MMPP, and simulated by SLAM II package. As simulation results, the proposed algorithm gets lower synchronous cell loss rate than the conventional DLB algorithms. The improved DLB algorithm for multimedia synchronization can be extended to any other cells which require higher priority.

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