• Proceedings of the KSR Conference
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• 2008.06a
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• pp.1032-1038
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• 2008

KTX train system is composed of TORNAD* network for transmitting information of train's internal equipments and OBCS which proceed information within train. OBCS of one trainset consisted of 28 equipments takes intelligent and dynamic composition according to equipment handling, train command and control flow. Each OBCS which is installed within trainset handle and supervise mutually action information about equipments, transmit it to driver to transmit information about train operation and preventive management. This mutual supervision and information transmission use KTX TORNAD* network system. TORNAD* network system is the one which is uniquely developped by GEC ALSTHOM, the KTX trainset manafacturing provider and this field is excluded from technical know-how transfer item. Through the research on analysis method of KTX TORNAD* system data structure which is operating on Seoul-Pusan Line, I hope that this thesis can contribute to train network system's standardization after applying it to improvement of train network system maintenance, enhancing quality of train service and applying it to future Korean rolling stock network system development.

• Journal of Electrical Engineering and Technology
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• v.9 no.5
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• pp.1753-1761
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• 2014

Due to the inherent inhomogeneous and anisotropy nature of the composite materials, the detection of internal defects in these materials with non-destructive techniques is an important requirement both for quality checks during the production phase and in service inspection during maintenance operations. The estimation of the time-of-arrival (TOA) and/or time-of-flight (TOF) of the ultrasonic echoes is essential in ultrasonic non-destructive testing (NDT). In this paper, we used split-spectrum processing (SSP) combined with matching pursuit signal decomposition (MPSD) to develop a dedicated ultrasonic detection system. SSP algorithm is used for Signal-to-Noise Ratio (SNR) enhancement, and the MPSD algorithm is used to decompose backscattered signals into a linear expansion of chirplet echoes and estimate the chirplet parameters. Therefore, the combination of SSP and MPSD (SSP-MPSD) presents a powerful technique for ultrasonic NDT. The SSP algorithm is achieved by using Gaussian band pass filters. Then, MPSD algorithm uses the Maximum Likelihood Estimation. The good performance of the proposed method is experimentally verified using ultrasonic traces acquired from three specimens of carbon fibre reinforced polymer multi-layered composite materials (CFRP).

• Journal of the Korean Institute of Landscape Architecture International Edition
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• no.2
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• pp.57-64
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• 2004

Nowadays the parks in Shanghai tend to develop towards two directions. Small and medimn parks are being gradually transformed from closed management to open management, while large ones emphasize their nature of theme and nature of functions. Simultaneously, the number of large and open public green spaces has been significantly increased. Although the public green space does not adopt the management pattern for parks, there is almost no difference between public green space and ordinary parks so far as the functions and scales are concerned. Due to the fact that there is no obvious boundary between a public park and a public green space, this paper raises a suggestion to coordinate continuously their management and functions so that the distribution of and the connection between the urban green spaces can be more rational and more definite and a sound green network can be formed. Starting from the viewpoint of emphasizing accessibility to green spaces and enhancing the angle of linking green spaces, we aim at transforming a park system to a multifunctional green system, extending the effects and service radius of large green spaces, and strengthening the internal connections with the surrounding areas so that a high-quality green space can be formed with the connection of the green space network.

• Journal of Korean Academy of Nursing
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• v.49 no.5
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• pp.613-630
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• 2019

Purpose: This study aimed to develop a scale measuring the Patient-Centered Nursing Culture (PCNC) and provide a basic tool to improve PCNC in Korea. Methods: A conceptual framework and construct factors were extracted through extensive literature review and in-depth interviews with nursing professionals. In total, 59 items were derived based on the pilot survey. Data were collected from 357 nurses working at general hospitals and analyzed for verifying the reliability and validity of the scale. Results: Nine factors containing 54 items were extracted from the exploratory factor analysis to verify the construct validity. The nine factors were top management leadership, policy and procedure, education and training, middle management leadership, supportive teamwork, nursing workplace environment, professional competence, patient-centered nursing activity, and nurses' values. These items were verified by convergent, discriminant, and concurrent validity testing. The internal consistency reliability was acceptable (Cronbach's ${\alpha}=.96$). Conclusion: The developed PCNC scale is expected to be used as the tool for the development of theory and improvement of PCNC, the empirical testing for cause and effect of PCNC, the development of interventions, education and training programs for improving PCNC, and indicators for evaluation or accreditation of hospital service quality.

• Journal of Wellbeing Management and Applied Psychology
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• v.4 no.2
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• pp.26-34
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• 2021

Purpose: The ultimate purpose of this study is to analyze this survey to understand the overall contents of college career guidance and psychological counseling, and to utilize it to improve the quality of learning and provide career guidance. Research design, data and methodology: The research period and survey subject are approximately one month from 2020.12.01(Tue) to 2021.01.03(Sun). Convenience sampling was conducted using a structured questionnaire composed of a 5-point Likert scale and 5 open-ended questions. As the analysis method, descriptive statistics such as reliability analysis and frequency analysis of Cronbach's α coefficient of internal consistency were mainly used. Data Analysis Statistical program was analyzed using SPSS 25 version. Results: The item with the highest score is that the counseling and counseling-related non-specialized programs offered by the Student Counseling Center are helpful for school life (3.56 points). Conversely, the lowest question is that seminars accompanied by priests are helpful for study (3.38 points). Conclusions: The average score of 5 questions in the career guidance and psychological counseling areas is 3.38 out of 5.

• Journal of the Korean Regional Science Association
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• v.38 no.1
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• pp.21-32
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• 2022

The purpose of this study is two things. First, it is to develop and demonstrate a sharong taxi platform. To this end, the implications for platform development were derived by analyzing consumers' perceptions of existing taxi services using IPA. As a result, abnormal business activities and safe services in the maintenance area were found to be safe rides and easy rides in the key improvement area. Safety such as usage fee level and driver information provision were derived in the areas subject to improvement, and friendly response and internal and external cleanliness were derived in the areas of excessive investment. The second purpose of this study is to estimate the value given to users for sharing taxi service platforms using the CVM. As a result of estimating the value of the demonstration service of the shared taxi platform developed through this study, the WTP was 3,621 won/per household/per year when expanding throughout Gimhae-si, and 2,515 won/per household/per year. Compared to the willingness to pay for empirical services, only 69.5% of the willingness to pay for the spread project in Gimhae-si. This is the result of a combination of service spread to an unspecified number of people and concerns about service quality due to spatial expansion. This suggests that it is necessary to build data through continuous demonstration and to carefully build a roadmap for spread by upgrading services based on this.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.10
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• pp.6779-6787
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• 2015

The objective of this study is understand the influence of the teaching ethics of preservice childcare teachers on teacher efficacy and professionalism awareness. In order to achieve the study objective, the questionnaires were distributed to 285 preservice childcare teachers in A city. In the results of the study, first, regarding the teaching ethics perceived by preservice childcare teachers, 'the ethics of infants' were the most highly perceived while the 'teaching strategy' on teacher efficacy, and 'social service' and 'professional ethics' on professionalism awareness were the most highly perceived. Second, preservice childcare teachers' teaching ethics, teacher efficacy, and professionalism awareness had statistically significant correlations. Third, preservice childcare teachers' teaching ethics had positive influence on teacher efficacy and professionalism awareness. Based on the results of this study, in order to improve the quality of the childcare service after understanding the importance of preservice childcare teachers' teaching ethics, it would be necessary to have various researches on the internal stability of the systematic education for childcare teachers to have teacher efficacy and professionalism awareness.

• Journal of Acupuncture Research
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• v.32 no.2
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• pp.123-130
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• 2015

Objectives : Primary dysmenorrhea is one of the most common female gynecological diseases. Acupuncture and moxibustion therapy have been used to treat dysmenorrhea in Korea. The aim of this review was to examine the effectiveness of acupuncture and moxibustion therapy for primary dysmenorrhea as described in studies in Korea. Methods : A total of 8 databases were searched, with the search concluding February 15, 2015. These were the Oriental Medicine Advanced Searching Integrated System, DBpia, Korean Studies Information Service System, National Digital Science Library, Korean Traditional Knowledge Portal, Research Information Sharing Service, and Pubmed. Randomized controlled Trails(RCTs) comparing acupuncture or moxibustion therapy with non acupoints stimulation or medication were selected. Data abstraction and assessment of methodology was conducted by authors and disagreements were resolved by discussion. Results : 7 trials were included in this review, with a total of 308 participants. 4 trials reported on acupuncture, 1 trial reported on acupress by magnet, 1 trial reported on pharmacopuncture, and the other trial reported on moxibustion. Quality of methodology was low. 2 trials showed that experimental therapy was effective for pain relief compared to the controlled group. However, 5 trials did not show a significant difference in pain relief. Conclusions : Acupuncture and moxibustion therapy may reduce period pain, however, it is needed for well designed RCTs in Korea.

• Convergence Security Journal
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• v.13 no.4
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• pp.19-25
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• 2013

The increasing demand for fast, flexible and guaranteed Quality of Service (QoS) in core networks has caused to deploy MultiProtocol Label Switching (MPLS) and Generalized MPLS (GMPLS) control plane. In GMPLS control plane, path computation and cooperation processes are one of the crucial element to maintain an acceptable level of service. The Internet Engineering Task Force (IETF) has proposed the Path Computation Element (PCE) architecture. The PCE is a dedicated network element devoted to path computation process and communications between Path Computation Clients (PCC) and PCEs is realized through the PCE Protocol (PCEP). This paper examines the PCE-based path computation architecture to include the design and implementation of PCEP. The functional modules including Finite State Machine (FSM) and related key design issues of each state are presented. In particular we also discuss internal/external protocol interfaces that efficiently control the communication channels.

• The Korean Journal of Health Service Management
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• v.5 no.2
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• pp.209-226
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• 2011

The purpose of this study is to analyze and find out key success factors and marketing strategies of Bumrungrad Hospital in Bangkok, Thailand. The major success factors of Bumrungrad Hospital are as follows; First, Bumrungrad Hospital had professional medical team and board of directors who had the international career. Second, Bumrungrad was supported by Thai government and they were in a cooperative relationship with each other for the development of the medical industry. Third, Bumrungrad appropriately handled the internal and external changes including Asia Financial Crises in 1997 and others. Fourth, Bumrungrad diversified and broaden its business field such as global medical investing and management, medical technology, anti-age medicine and wellness. Marketing strategies of Bumrungrad analyzed are the following four factors. First, Bumrungrad focused on the quality of services by employing professional medical staffs, who have the international certification, and by constructing IT system for hospital management. Second, Bumrungrad has maintained an equalized price policy to attract the customers bothin the domestic and foreign markets. The cost for care has appealed the foreign customers for its comparatively low price, but it focused mainly on the upper middle class in Thailand. Third, it established, managed, and consulted hospitals in the foreign countries including the Philippines and the Arab Emirates. Fourth, it adopted differentiated promotion strategies suitable for the special needs of domestic and foreign customers, and put emphasis on the buzz marketing.