• 제목/요약/키워드: Important Performance Analysis

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도착관리시스템 궤적 예측 모듈의 성능 개선을 위한 궤적 예측 정확도 분석 방법 연구 (Study on Trajectory Prediction Accuracy Analysis Method for Performance Improvement of a Trajectory Prediction Module of Arrival Manager)

  • 오은미;김현경;은연주;전대근
    • 한국항공운항학회지
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    • 제23권3호
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    • pp.28-34
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    • 2015
  • An analysis method of trajectory prediction has been suggested and the developed trajectory prediction module, which is an important functional component of the Arrival Manager (AMAN) of Jeju airport, has been tested by applying the suggested method. The objective of this method is to improve prediction performance of the trajectory prediction module. The trajectory prediction module predicts the trajectories based on the real-time track data and flight plans. Therefore, the suggested analysis method includes the simulation framework which is based on real-time playback, recording, and graphic display systems for testing. Besides, the definition of time error, which is a important index for the time based scheduling system, such as AMAN, is included in the suggested analysis method. An example of arrival time prediction accuracy improvement through the suggested analysis method has also been presented.

마이크로 가스터빈 설계 및 운전 성능 분석 : 제2부 - 압축기와 터빈 성능저하에 의한 엔진 운전 및 성능변화 (Analysis of Design and Operation Performance of Micro Gas Turbine : Part 2 - Variations in Engine's Operation and Performance Caused by Performance Degradation of Compressor and Turbine)

  • 김정호;김민재;김동섭
    • 한국유체기계학회 논문집
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    • 제18권4호
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    • pp.30-35
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    • 2015
  • This study analyzed the variations in the performance and operation of a 200 kW class micro gas turbine according to performance degradation of compressor and turbine. An in-house code, developed by the present authors and presented in the first part of these series of papers, were used for the analysis. The degradation of compressor and turbine were simulated by modifications in the their performance maps: mass flow rate, pressure ratio and efficiency were decreased from the reference values. Firstly, the variations in the operating conditions (air flow rate, pressure ratio) were predicted for the full load condition. Then, the same analysis were performed for a wide partial load operating range. The change in engine's performance (power output and efficiency) due to the component degradation was predicted. In addition, the change in the compressor surge margin, which is an important indicator for safe engine operation, was evaluated.

주택성능등급 인정 사례의 부문별 평가 결과 분석 (Analysis on Results evaluated by "Housing Performance Grading System" in Korea)

  • 이성옥
    • KIEAE Journal
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    • 제10권6호
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    • pp.55-66
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    • 2010
  • The government is enacted "Housing Performance Grading Indication System" from qualitative housing supply policy and performance of housing under the background of looking for new plan to secure good housing stock and housing performance. This system consists of 5 main performance section, 14 performance categories and 20 detailed performance items. 5 main performance parts are sound insulation related grading(Light-weight impact sound insulation, heavy-weight floor impact sound insulation, noise emission in bathroom, airborne sound insulation for wall between units), Long-life housing related grading(flexibility, remodeling & maintenance, durability), environment related grading(landscape, indoor air quality and ventilation, energy performance), Living environment related grading(common resident facilities such as playground and consideration for the socially underprivileged such as the aged), Fire fire prevention grading(fire fire prevention). The purpose of this research is to analyze characteristics and assessment results of 20 detailed performance items on "Housing Performance Grading Indication System" which was enforced 240 cases from Jan 9th, 2006 to Sep 30th, 2010. The analysis of approval condition of detailed performance items will be important comments for understanding the current domestic level and development of technology.

지방공무원 인사혁신정책의 상대적 우선순위분석 (Analysis of Relative Priority of Local Civil Servant's Personnel Innovation Policy)

  • 이택구
    • 한국콘텐츠학회논문지
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    • 제18권3호
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    • pp.550-556
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    • 2018
  • 본 연구는 지방공무원 인사혁신에 대한 정책우선순위를 통해 인적자원관리의 방향성을 모색하기 위해 AHP 분석을 실시하였다. 연구결과는 다음과 같다. 첫째, 측정영역에서는 인사교류시스템, 보직관리시스템, 채용관리시스템, 교육훈련시스템 중에서 인사교류시스템이 가장 중요한 평가요소로 분석되었다. 둘째, 평가항목의 관점에서 보면, 인사교류시스템에서는 직무와 성과중심의 인사관리 전환, 보직관리시스템에서는 전문직위제 지정 및 확대, 채용관리시스템에서는 민간에서 시행중인 인성, 적성 검사도입, 교육훈련시스템에서는 맞춤형 교육과정프로그램 개발 등이 가장 중요하게 평가되었다.

공개공지의 질적 수준 향상 및 활성화를 위한 중요 설계요소 분석 - 설계자와 이용자의 인식차이를 중심으로 - (An Analysis of Important Design Factors for Rising of Qualitative Level and Revitalization in the Public Open Spaces)

  • 채두병;이주형;송희열
    • 한국주거학회논문집
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    • 제21권3호
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    • pp.95-104
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    • 2010
  • The purpose of this study was to found that the important design reform points for improvement of the public open space quality. For this purpose, surveyed the users of the public open space and the experts working for the public open space planning for the design elements of the public open spaces in terms of importance and satisfaction. The scope of the study was limited to Mapo-gu, Seoul and the buildings constructed since 1992 were sampled. the data collected were subject to Importance-Performance Analysis. As a result, 'waste boxes, vending machines and other amenities', 'characteristic floor and pedestrian environment', 'designs and their layout in harmony with the surrounding and landscape facilities', 'facilities checking and patrol for safety' and 'entire area of the public open space'. Based on the above findings, the following reform measures are put forwards for improvement of the public open space quality; First, the public open spaces should be equipped with sufficient amenities. Second, it is necessary to check the facilities regularly, while enhancing the safety through patrols. Third, it is essential to reflect user's needs in public open space planning, while applying the important design elements to the public facilities. Fourth, in order to create a comfortable pedestrian environment within the public open space, it is deemed necessary to divide the space into the passages for passers-by and the recesses for uses. Fifth, it is necessary to amend the Building Code to the effects that the radio of the landscaped area to the entire area can be readjusted together with the night lighting facilities. Sixth, it is desirable to give the weights to the important design elements for the public open spaces, so that the quality public open spaces can benefit from the incentives. In addition, regular maintenance and management should be ensured by policies.

Influence of TBM operational parameters on optimized penetration rate in schistose rocks, a case study: Golab tunnel Lot-1, Iran

  • Eftekhari, A.;Aalianvari, A.;Rostami, J.
    • Computers and Concrete
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    • 제22권2호
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    • pp.239-248
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    • 2018
  • TBM penetration rate is a function of intact rock properties, rock mass conditions and TBM operational parameters. Machine rate of penetrationcan be predicted by knowledge of the ground conditions and its effects on machine performance. The variation of TBM operational parameters such as penetration rate and thrust plays an important role in its performance. This study presents the results of the analysis on the TBM penetration rates in schistose rock types present along the alignment of Golab tunnel based on the analysis of a TBM performance database established for every stroke through different schistose rock types. The results of the analysis are compared to the results of some empirical and theoretical predictive models such as NTH and QTBM. Additional analysis was performed to find the optimum thrust and revolution per minute values for different schistose rock types.

슬래브축열 시스템 설계인자의 감도해석 (A Sensitivity Analysis of Design Factors of Air-Conditioning System with Slab Thermal Storage)

  • 정재훈
    • 대한설비공학회:학술대회논문집
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    • 대한설비공학회 2008년도 동계학술발표대회 논문집
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    • pp.590-595
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    • 2008
  • In this paper, the sensitivity analysis was examined about the main factors that compose an air-conditioning system with slab thermal storage by using the analytic solution. Those factors are the insulation performance of floor slab surface, the slab thickness, the heat capacity of floor slab, the air change rate, and the insulation performance of the wall. The slab thickness and heat capacity of floor slab that minimize heating loads was gained by sensitivity analysis. It is became clear that the insulation performance of slab surface, high airtightness and high heat insulation are important design factors in air conditioning system with slab thermal storage.

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Development of data analysis tool for combat system integration

  • Shin, Seung-Chun;Shin, Jong-Gye;Oh, Dae-Kyun
    • International Journal of Naval Architecture and Ocean Engineering
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    • 제5권1호
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    • pp.147-160
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    • 2013
  • System integration is an important element for the construction of naval combat ships. In particular, because impeccable combat system integration together with the sensors and weapons can ensure the combat capability and survivability of the ship, the integrated performance of the combat system should be verified and validated whether or not it fulfills the requirements of the end user. In order to conduct systematic verification and validation, a data analysis tool is requisite. This paper suggests the Data Extraction, Recording and Analysis Tool (DERAT) for the data analysis of the integrated performance of the combat system, including the functional definition, architecture and effectiveness of the DERAT by presenting the test results.

한국거주 외국인 채식주의자의 한국음식 선호도 및 한식선택속성 (Survey of Preferences and Choice in Korean Cuisine of Foreigners who are Vegetarian)

  • 이시은;서모란;정희선
    • 한국식품조리과학회지
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    • 제30권5호
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    • pp.579-587
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    • 2014
  • Korean food is being recognized for its excellence. This paper attempts to provide material for the popularization of Korean cuisine with respect to foreign nationals living in Korea who are vegetarian by studying their Korean cuisine knowledge and preferences. The results of an Importance-Performance Analysis showed that though the importance values of traditional spice use such as garlic and the consideration of ingredient price were high, their performance values were low. Thus, these were areas identified as needing major improvement. Repeated measured data analysis was performed to determine variations in the perception of major factors for the development of Korean cuisine. The results indicated that simplification of seasoning was the most important factor followed by diversification of food ingredients, resale of vegetables in small quantities, ease of obtaining Korean cuisine recipes, and popularization of herbal and temple food, in that order. The least important factor in developing Korean cuisine was determined to be the reduction in levels of salt. Conjoint analysis was performed on the choices affection the selection of Korean cuisine, and price was found to be the most important factor. It was also determined that the effectiveness in the combination of fusion style, health oriented, concurrently served, medium to low price Korean cuisine was highest in preference. The next highest preferred combination was traditional style, health oriented, concurrently served, medium to low price Korean cuisine. The most significant factor to keep in mind in developing Korean dishes for foreign vegetarians was determined to be price. Furthermore, it was important to not simply reduce caloric intake but to use healthy ingredients and cooking methods.

IPA를 활용한 농촌다움에 대한 거주민의 인식 및 평가 - 고창군 지역 리더그룹을 중심으로 - (Residents' Perception and Evaluation of New Ruralism Using IPA - Focusing on the Regional Leader Group in Gochang-gun -)

  • 김용진;손용훈
    • 농촌계획
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    • 제28권1호
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    • pp.99-108
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    • 2022
  • This study measured the importance and satisfaction of the values related to 'New Ruralism' using the IPA(Importance-Performance Analysis) technique by the rural leaders' group. In the result, the satisfaction value was evaluated lower in the importance of 'landscape and ecological resource conservation', 'settlement environment', and 'population' related items. On the other hand, the items of 'tourism resource management', 'landscape damage', and 'landscape and ecological resource conservation' showed high satisfaction. Therefore, the leaders' group of Gochang-gun perceived the importance of local tourism image, landscape damage prevention, settlement environment, and rural landscape in 'New Ruralism' management. However, the leaders' group valued lower in the items of population, ecological value and natural and historical tourist sites. This seems to be a characteristic of the leaders' group mainly engaged in agriculture. Through factor analysis, the six items excluded from the analysis were considered important factors in 'New Ruralism' in Gochang-gun through a review of previous studies. Still, the leaders' group of Gochang-gun did not recognize them as important items in the rural resource. However, these items will be able to contribute to the development of 'New Ruralism' in Gochang-gun, and it is necessary to improve the awareness of the leader group. Even if local governments or experts present an ideal goal for rural development, it is difficult to achieve the goals if there is a difference from the perception of residents. Therefore, it is important to understand the perception of 'New Ruralism' of the leaders' group who plays an important role in regional development projects.