• Title/Summary/Keyword: two dimensions

Search Result 2,011, Processing Time 0.134 seconds

A Study on Development of Multi-item Scale for Assessing Airline Cabin Service Quality (항공객실서비스 품질 측정 모형 개발에 관한 연구)

  • Kim, Yoonjin;Kim, Youn Sung
    • Journal of Korean Society for Quality Management
    • /
    • v.45 no.3
    • /
    • pp.483-501
    • /
    • 2017
  • Purpose: Recognizing the limitations of the previous researches that measured the quality of airline service quality only with partial evaluation items of cabin service quality. the purpose of this study is to standardize and develop assessment of the airline cabin service quality with considering the characteristics of cabin service and customer needs. Methods: The proposed method of this paper was the empirical items of airline cabin service quality was derived through reviewing and comparing the previous researches, industrial indicators like Skytrax and KS-SQI and NCS. Results: The result of this research proposed CSQ (Cabin SERVQUAL) which could consist of seven dimensions, separated by five direct customer satisfaction factors and two indirect factors required for providing customer service. Conclusion: The developed CSQ can be used for airline service quality measurement which will achieve establishing a strategy to improve customer satisfaction and satisfaction of Airline's employee.

Application of Fractal Dimension for Morphological Analysis of Wear Particle (마멸입자 형태해석을 위한 Fractal 차원의 적용)

  • 오동석;조연상;서영백;박흥식;전태옥
    • Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
    • /
    • 1998.10a
    • /
    • pp.115-123
    • /
    • 1998
  • The morphological analysis of wear particle is a very effective means for machine condition monitoring and fault diagnosis. In order to describe morphology of various wear particle, the wear test was carried out under different experimental conditions. And fractal descriptors was applied to boundary and surface of wear particle with image processing system. These descriptors to analyze shape and surface wear particle are shape fractal dimension and surface fractal dimension. The shape fractal dimension can be derived from the boundary profile and surface fractal dimension can be determined by sum of intensity difference of surface pixel. The morphology of wear particles can be effectively obtained by two fractal dimensions.

  • PDF

Dimensions of Structural Elements in Fusiform Ray of Sitka Spruce (Picea sitchensis (Bong.) Carr.) Affecting Radial Permeability

  • Usta, Ilker
    • Journal of the Korean Wood Science and Technology
    • /
    • v.33 no.5 s.133
    • /
    • pp.1-6
    • /
    • 2005
  • The anatomical structure of fusiform ray was examined by scanning electron microscopy (and microscopic images were analysed by image analyser) to explain the differences in radial fluid uptake between the extremes in the radial treatment data, i.e. between the selected trees of QCI (Queen Charlotte Islands in Rhondda, South Wales) and SO (South Oregon in Dalby, North-East England) planted in the UK. The ray structure of these two seed origins was examined microscopically and different patterns of ray composition were observed. The most important anatomical features influencing radial permeability were the nature of fusiform ray, and the condition of the resin canals, epithelial cells and intercellular spaces in particular.

Relational Aggression Strategies of Young Children in 'Sansae Class' (산새반 유아들의 관계적 공격전략 분석)

  • Jung, Eun-Jeong;Lee, Hee-Yeong;Lee, Kyeong-Hwa
    • Korean Journal of Child Studies
    • /
    • v.31 no.3
    • /
    • pp.183-198
    • /
    • 2010
  • The purpose of this study was to interpret relational aggression strategies in 4 year old young children's interactions in 'Sansae class' in terms of two-fold dimensions of proactivity and reactivity. Following an ethnographical approach, participative observation on young children and in-depth interviews with the teacher were employed, over the course of 30 sessions of 3 hours duration. The results are as follows; proactive relational aggression was more frequently observed in girls, and their major strategies employed against someone they disliked were ignoring them, distorting play-rules, and so on. Major strategies of reactive relational aggression in girls were largely manipulative in nature, for example, 'threatening their friend' and 'withdrawal of friendship'.

Analysis of Installation Methods of Earth Continuity Conductor on Underground Power Cable Systems (지중송전계통 병행지선 설치 방안 검토)

  • Kang, J.W.;Jung, C.K.;Yoon, H.H.;Yoon, J.K.;Kim, D.J.;Kim, J.S.
    • Proceedings of the KIEE Conference
    • /
    • 2008.07a
    • /
    • pp.468-469
    • /
    • 2008
  • In this paper, the effects of earth continuity conductor are deeply analyzed for reducing the level of induced sheath voltage at the single point bonded sections. The various installation conditions of an earth continuity conductor are considered including conductor dimensions, its spacing from the three phase cables, and utilization of two earth continuity conductors when the grounding fault occurs on real power cable systems. Finally, the transient characteristics including reduction effects of induced sheath voltage are proved by EMTP simulations. The optimal installation condition of earth continuity conductor is also proposed based on those results.

  • PDF

Rao-3 algorithm for the weight optimization of reinforced concrete cantilever retaining wall

  • Kalemci, Elif N.;?kizler, S. Banu
    • Geomechanics and Engineering
    • /
    • v.20 no.6
    • /
    • pp.527-536
    • /
    • 2020
  • The paper represents an optimization algorithm for reinforced concrete retaining wall design. The proposed method, called Rao-3 optimization algorithm, is a recently developed algorithm. The total weight of the steel and concrete, which are used for constructing the retaining wall, were chosen as the objective function. Building Code Requirements for Structural Concrete (ACI 318-05) and Rankine's theory for lateral earth pressure were considered for structural and geotechnical design, respectively. Number of the design variables are 12. Eight of those express the geometrical dimensions of the wall and four of those express the steel reinforcement of the wall. The safety against overturning, sliding and bearing capacity failure were regarded as the geotechnical constraints. The safety against bending and shear failure, minimum and maximum areas of reinforcement, development lengths of steel reinforcement were regarded as structural constraints. The performance of proposed algorithm was evaluated with two design examples.

A Cross-Cultural Study of Holiday Decorations

  • Jin, Jyung Hwa
    • Architectural research
    • /
    • v.1 no.1
    • /
    • pp.17-22
    • /
    • 1999
  • The purpose of this study is to investigate the ways in which cultural beliefs influence the lifestyles of the residents and environmental activities, especially decorations on the fronts during holiday seasons. The relationship between holiday displays and cultural values are investigated in the study. This research conducts a case study of two ethnic neighborhoods to understand cultural identification, attachments and environmental decoration. The neighborhoods were visited and their activities were observed during the holidays including Easter, Thanksgiving, Halloween and Christmas from 1992 to 1995. Exterior decorations were measured by a field survey of the frontal areas of 200 houses. This study confirms that the fronts are recognized and evaluated as cultural communications. The holiday decorations and celebrations are intimately related to cultural dimensions. Distinctive groups use different environmental elements in the celebration of holidays. Each culture is distinguished by its own rituals constituted by the interweaving of space and activities.

  • PDF

Development of Water-Cooled Heat Sink for High-Power IGBT Inverter

  • Han, Min-Sub;Lee, Su-Dong;Hong, Chan-Ook;Yang, Chun-Suk;Kim, Kyung-Seo
    • 한국전산유체공학회:학술대회논문집
    • /
    • 2008.03b
    • /
    • pp.349-353
    • /
    • 2008
  • We present the development of a water-cooled heat sink that provides reliable thermal performance for high-power IGBT inverter. The development process comprises three stages. In the concept design, the thermal performances of two design proposals are considered. The thermal system of each design is particularly analyzed using the compact model. In the detailed design stage, specific dimensions of the heat sink are determined considering the design options under given external restrictions and the results from three-dimensional heat transfer analysis. The prototype of the resultant design is made and tested on the rig for final confirmation. We emphasize the relevant use of the thermal analysis on each stage and also discuss various practical issues involved.

  • PDF

Developing CBR System for Bolt's CAPP (볼트의 자동공정계획수립을 위한 CBR시스템의 개발)

  • Kim, Jin-Baek
    • Asia pacific journal of information systems
    • /
    • v.9 no.2
    • /
    • pp.19-37
    • /
    • 1999
  • Computer aided process planning(CAPP) is a key for implementing CIM. It is bridge between CAD and CAM and translates the design information into manufacturing instructions. Generally, manufacturing is an area where intelligent systems will not be able to rely on methods requiring formalized knowledge. Manufacturing lacks a body of knowledge that is specific, formalized, and rigorous, and which can be coded as rules or procedures. Thus expertise in manufacturing is developed over a period of many years. Case-based reasoning(CBR) offers a new approach for developing intelligent system. In the case-based approach the problem solving experience of the experts is encoded in the form of cases. CBR's retrieval process can be divided to two step. The first step is matching step, and the second step is selection step. For selecting base case, new preference heuristics were introduced using similarity concept. Similarity concept has three has three dimensions, i.e. entity similarity, structural similarity, and goal similarity. In this paper, bolt's process planning was selected an application domain. Following the test result, the new preference heuristics were approved as a useful procedure in CAPP.

  • PDF

An Exploratory Study on the Factors Influencing Informations Systems Integration Performance in Mergers and Acquisitions (기업 인수 및 합병 시 정보시스템 통합성과 결정요인에 관한 탐색적 연구)

  • Kim, Hyo-Gun;Choi, Youn-Joo;Jeong, Seong-Hwi
    • Information Systems Review
    • /
    • v.3 no.2
    • /
    • pp.387-398
    • /
    • 2001
  • Effectively integrating information systems in mergers and acquisitions of large organizations can be critical to merger success. But the general literature on M&A focuses on the financial aspects of the acquisition process, rather than on the subsequent process of integration. This paper analyses the case of information systems integration in a merger of two Korean manufacturing organizations, and explores the factors influencing IS integration in M&A in Korea. To analysis this case and find factors affecting IS integration success, we use MIT'90s schema (framework) by Scott Morton that consists of 5 dimensions (strategy, processes, structure, individuals/roles, and technology). From the results of this case study, we found 13 factors and 14 propositions influencing IS integrations performance in M&A in Korean companies. This research helps the company to avoid mistakes and to manage IS integration in M&A. Also this study provides guide line for further researches.

  • PDF