• Title/Summary/Keyword: IS Performance

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A Study on Performance Assessment Methods by Using Fuzzy Logic

  • Kim, Kwang-Baek;Kim, Cheol-Ki;Moon, Jung-Wook
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.3 no.2
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    • pp.138-145
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    • 2003
  • Performance assessment was introduced to improvement of self-directed learning and method of assessment for differenced learning as the seventh educational curriculum is enforced. Performance assessment is overcoming limitation about problem solving ability and higher thinking abilities assessment that is problem of a written examination and get into the spotlight by way for quality of class and school normalization. But, performance assessment has problems about possibilities of assessment fault by appraisal, fairness, reliability, and validity of grading, ambiguity of grading standard, difficulty about objectivity security etc. This study proposes fuzzy performance assessment system to solve problem of the conventional performance assessment. This paper presented an objective and reliable performance assessment method through fuzzy reasoning, design fuzzy membership function and define fuzzy rule analyzing factor that influence in each sacred ground of performance assessment to account principle subject. Also, performance assessment item divides by formation estimation and subject estimation and designed membership function in proposed performance assessment method. Performance assessment result that is worked through fuzzy performance assessment system can pare down burden about appraisal's fault and provide fair and reliable assessment result through grading that have correct standard and consistency to students.

Position Estimation Method of Entertainment Robot in Performance Stage (공연무대를 이용한 엔터테인먼트 로봇의 위치추정 방법)

  • Kang, Chul U.;Ko, Seok J.
    • IEMEK Journal of Embedded Systems and Applications
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    • v.9 no.3
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    • pp.151-156
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    • 2014
  • In this paper, we propose a position estimation method of an entertainment robot in a performance stage. A position information is needed to produce contents of an entertainment robot performance. First, the performance stage is realized by a CD (cadmium sulfide) sensor matrix with a constant distance. Then the proposed position estimation uses ON/OFF information of a CD sensor in a performance stage. We confirmed that the position of the robot is detected with an maximum 4cm in position evaluation experiments. The robot was traveling to the final target position in the walking experiment with 75cm and 120cm path plan. Ultimately, the effectiveness of the proposed estimation is assessed by experimental results of a robot in performance stage. Also, in the proposed system installed by a robot performance contents, there is no necessity to mount a position estimation device on a robot; therefore an advantage of our system is that an entertainment robot commercialized by robot vendor can be utilized in our performance stage directly.

A DEA-Based Portfolio Model for Performance Management of Online Games (DEA 기반 온라인 게임 성과 관리 포트폴리오 모형)

  • Chun, Hoon;Lee, Hakyeon
    • Journal of Korean Institute of Industrial Engineers
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    • v.39 no.4
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    • pp.260-270
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    • 2013
  • This paper proposes a strategic portfolio model for managing performance of online games. The portfolio matrix is composed of two dimensions: financial performance and non-financial performance. Financial performance is measured by the conventional measure, average revenue per user (ARPU). In terms of non-financial performance, five non-financial key performance indicators (KPIs) that have been widely used in the online game industry are utilized: RU (Register User), VU (Visiting User), TS (Time Spent), ACU (Average Current User), MCU (Maximum Current User). Data envelopment analysis (DEA) is then employed to produce a single performance measure aggregating the five KPIs. DEA is a linear programming model for measuring the relative efficiency of decision making unit (DMUs) with multiple inputs and outputs. This study employs DEA as a tool for multiple criteria decision making (MCDM), in particular, the pure output model without inputs. Combining the two types of performance produces the online game portfolio matrix with four quadrants: Dark Horse, Stop Loss, Jack Pot, Luxury Goods. A case study of 39 online games provided by company 'N' is provided. The proposed portfolio model is expected to be fruitfully used for strategic decision making of online game companies.

Impact of Psychological Capital on Job Performance and Job Satisfaction: A Case Study in Vietnam

  • NGO, Trung Thanh
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.5
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    • pp.495-503
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    • 2021
  • Business leaders have made great efforts to increase their organizations' competitive capability, and raising employees' job performance is considered as one of the essential solutions. Thus, it is vital to properly identify factors that affect the job performance since this will be the basis for managers to propose recommendations to increase employees' job performance. The study seeks to investigate the relationships between psychological capital, job satisfaction, and job performance of employees in Vietnam, a developing country in South-East Asia. In this study, psychological capital is considered as a high-order construct. The mixed research method is used in this study. Qualitative research method is used to form the official survey questionnaire. Quantitative research method is used for investigating the relationships between concepts. Research data are collected from 848 interviewees via both face-to-face and email surveys. The findings show that psychological capital has positive relationships with job satisfaction and job performance. Job satisfaction also has a positive impact on job performance. In particular, job satisfaction shows the mediating role in the impact of employees' psychological capital on their job performance. Based on the results, the study also provides recommendations related to psychological capital and job satisfaction assisting managers to increase employees' job performance.

Network Cooperation, Innovation, Internationalization and Economic Performance of SMEs: An Exploratory Study

  • Singh, Rashmeet;Subrahmanya, MH Bala
    • Asian Journal of Innovation and Policy
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    • v.7 no.3
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    • pp.461-488
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    • 2018
  • This paper explores the relationship between network cooperation, innovation, internationalization and economic performance of manufacturing small and medium enterprises (SMEs) of engineering goods industry located in Bangalore city, India. At the outset, it is observed that SMEs receive the maximum assistance in the realm of product specifications. Moreover, they do not resort to manufacturing new products as much as they resort to product modifications or process improvements. Further, it is found (using Chi-square test of independence) that higher the network assistance received from an external network, greater is the innovation performance of SMEs. Subsequently, using analysis of variance (ANOVA), export intensity (proxy for internationalization performance) of SMEs is found to have a significant positive association with both the degree of their network cooperation and of their innovation performance. Lastly, it is observed that higher the degree of each of network cooperation, innovation performance and internationalization performance, better is the economic performance (measured by total sales turnover) of SMEs. These results have significant implications for the policy makers of the country to give due attention to network cooperation, innovation and internationalization as the means of enhancing the economic performance of SMEs.

Performance-based seismic analysis and design of code-exceeding tall buildings in Mainland China

  • Jiang, Huanjun;Lu, Xilin;Zhu, Jiejiang
    • Structural Engineering and Mechanics
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    • v.43 no.4
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    • pp.545-560
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    • 2012
  • Design codes provide the minimum requirements for the design of code-compliant structures to ensure the safety of the life and property. As for code-exceeding buildings, the requirements for design are not sufficient and the approval of such structures is vague. In mainland China in recent years, a large number of code-exceeding tall buildings, whether their heights exceed the limit for the respective structure type or the extent of irregularity is violated, have been constructed. Performance-based seismic design (PBSD) approach has been highly recommended and become necessary to demonstrate the performance of code-exceeding tall buildings at least equivalent to code intent of safety. This paper proposes the general methodologies of performance-based seismic analysis and design of code-exceeding tall buildings in Mainland China. The PBSD approach proposed here includes selection of performance objectives, determination of design philosophy, establishment of design criteria for structural components and systems consistent with the desirable and transparent performance objectives, and seismic performance analysis and evaluation through extensive numerical analysis or further experimental study if necessary. The seismic analysis and design of 101-story Shanghai World Financial Center Tower is introduced as a typical engineering example where the PBSD approach is followed. The example demonstrates that the PBSD approach is an appropriate way to control efficiently the seismic damage on the structure and ensure the predictable and safe performance.

A Study on the Assessment and Performance Indicator criteria for Repair Convenience of Apartment Building (II) - Public sector - (공동주택 수리용이성 주택 성능등급 인정 실태연구(II) - 공용공간을 중심으로 -)

  • Lim, Seok-Ho;Ji, Jang-Hun;Kim, Soo-Am
    • Journal of the Korean housing association
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    • v.20 no.6
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    • pp.57-65
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    • 2009
  • In Korea, Housing Performance Rating Indication System was first adopted in 2006. Main purpose of the System is on developing criteria which can systematically measure the level of housing performance. Among the five categories of Housing Performance Rating Indication System, Repair Convenience is closely related to Remodeling which has been widely recognized as an alternative to the building reconstruction. Especially, as the actual housing supply level in Korea is reaching almost 100%, it is crucial to expand Long-life Housing through the effective maintenance and management. In addition, consumers should have an access to the performance ratings of apartment buildings on which they can rely on in choosing their own housings. And for construction companies, a performance code enacted by government will provide them with a standard that they can utilize in determining performance level of buildings that they build. This study examines data which has been obtained from the recent application of Housing Performance Rating Indication System and Repair Convenience category is main concern. Findings from the study will provide vital information in improving current Housing Performance Rating Indication System.

An Experimental Study on the Performance Evaluation of a Small-Sized Centrifugal Compressor (소형 원심압축기의 성능평가에 대한 실험적 연구)

  • Cho, Sung-Kook;Kang, Shin-Hyoung
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.22 no.8
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    • pp.1052-1063
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    • 1998
  • The performance database of small-sized centrifugal compressors is needed for the design of high performance machines and also for the verification of design tools and analysis software. An impeller is designed, manufactured and tested. The effects of several parameters on the evaluation of performance are investigated and the performance test of parallel diffuser is also carried out. The proper estimation of static pressure, total temperature and blockage at the impeller exit is important for performance evaluation. 4 method in cooperation with 3-D calculation is suggested. The measured performances are in a good agreement with the predicted results. However, there are some discrepancies in efficiency.

Analysis of a Vehicle Performance Using Taguchi Method: How does a Torque Converter Affect the Vehicle Performance\ulcorner (다구찌 방법을 이용한 토크 컨버터의 차량 연비 및 가속성능에 미치는 영향 분석)

  • Lee, Chin-Woo;Lim, Won-Sik;Park, Yeong-Il;Lee, Jang-Moo
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.26 no.6
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    • pp.1085-1091
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    • 2002
  • General vehicle is evaluated by its acceleration, fuel economy, NVH (Noise, Vibration and Harshness) and subjective (such as launching feel) performance. The first step to enhance its performance is to know how much each component affects on the vehicle performance. It is very important to know what is the key factor of the component among many specifications. Hydraulic torque converter can be expressed by means of its performance curve (torque ratio and capacity factor). In this paper, the key factor of torque converter, which affect vehicle performance, are explored by using Taguchi method. Moreover, general sensitivity analysis method is compared with Taguchi's experiment.

Analysis of the Performance of Magnetic Abrasive Deburring according to Powder Characteristics (분말 특성에 따른 자기연마에 의한 Deburring성능분석)

  • Chae Jong-Won;Ko Sung-Lim;Baron Yuri M.
    • Journal of the Korean Society for Precision Engineering
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    • v.21 no.12
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    • pp.37-43
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    • 2004
  • The performance of magnetic abrasive finishing fur surface is evaluated by the characteristic curve. The characteristic curve is generated by experiment in surface finishing. For experiment, new magnetic inductor is designed and manufactured. 15 kinds of powders are provided to find the relationship between powder characteristic and finishing performance. As powder, Fe-TiC. Polymer-TiC and Fe-NbC are used with different size. The size of abrasives and location are also important factor for the performance. From characteristic curve, two index are obtained, which specify the initial finishing performance and endurance of finishing performance. It is proved that the performance index can be applied to select proper powder for efficient deburring. It is shown that the characteristic curve can be used as good tools for evaluating powder performance in surface finishing and deburring.