• 대한전자공학회논문지
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• 제27권4호
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• pp.484-490
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• 1990

In speech coding scheme, because information bits have different error sensitivities over channel errors, the channel coder for combining with speech coding should be realized by the variable coding rate considering the bit importance of speech information bits. In realizing the 4 kbps channel coder for 12kbps speech, this paper have chosen the channel coding method by analyzing the hard-decision post-decoding error rate of RCPC(Rate Compatible Punctured Convolutional) codes and bit error sensitivity of 12 kbps speech. Under the coherent QPSK and Rayleigh fading channel, the performance analysis has showed that 10dB gain was obtained in speech SEGSNR by 4-level uneuqal error protection, which was compared with the caseof no channel coding at 7dB channel SNR.

• 토지주택연구
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• 제8권3호
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• pp.103-111
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• 2017

This study is aimed to identify the LHI policies in the research process that reflect the diversity of job positions and workplace using a statistical method such as IPA. To collect the sample data questionnaire survey was carried out in 400 staffs in LH including researchers to investigate dissemination of research results and improve factor regard with research. The dissemination of research results is positioned as a important key factor for the determination of research institute policy. From this reason, satisfaction survey was performed for defining the procedure of research system and the dissemination of research findings. The answers give stimulate participation for investigational activity and share some perceptions with research vision a dominant position. Futhermore, select the research theme which is a important association with pending issues at the planning phase is to reinforce the availability of research findings. Lastly, promote research findings intensively is cause availability of research results to increase also.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2011년도 춘계학술대회 초록집
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• pp.136.1-136.1
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• 2011

An energy modeling analysis method currently has been considered as a new approach for energy policy research, because the importance of renewable energy use has been emphasized more and more. This study used RETScreen model as a clean energy decision making methodology for adaptation to climate change and elimination of various pollutions. This modeling method includes five step standard analysis; energy model, cost analysis, GHG analysis, financial analysis, and sensitivity & risk analysis and it also assesses both conventional and modern energy sources and technologies. This methodology for the photovoltaic(PV) energy modeling is used to evaluate the energy production, financial performance and GHG emissions reduction of photovoltaic projects. In addition, the PV application systems are classified into three basic applications; On-grid system, Off-grid system and water pumping system. This study assesses the renewable energy techno-economic modeling method with the feasibility analysis result of 10 MW PV power plant in Abu Dhabi in United Arab Emirates. Furthermore this study stresses the importance of renewable energy model research by applying to domestic PV power plant which is now in preparation.

• 한국콘텐츠학회논문지
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• 제14권6호
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• pp.307-318
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• 2014

이 연구에서는 일반인이 건강증진 메시지 디자인과 관련하여 핵심정보 제시, 내용의 유용성, 형식, 직관성의 중요성을 어떻게 인식하는지와 현재 식품의약품안전처에서 발간하는 웹진의 텍스트와 시각자료가 위 네 가지 측면에서 얼마나 효과적으로 디자인되었다고 인식하는지를 조사하였다. 그리고 이러한 인식에 영향을 미치는 개인특성 변인이 무엇인지를 탐색적으로 연구하였다. 이를 위해 294명의 성인들을 대상으로 설문조사를 실시하였으며, 중요도 및 실행도 분석(Importance-Performance Analysis)을 실시하였다. 그 결과 연구참여자들은 텍스트 디자인에서 내용의 유용성을, 시각자료 디자인에서 핵심정보 제시를 가장 중요한 항목으로 인식하였으며, 텍스트와 시각자료 모두 형식 측면에서의 실행도가 가장 높게 나타났다. 시각자료의 핵심정보 제시와 직관성은 가장 중점적으로 개선해야 할 원리인 것으로 나타났다. 그리고 개인의 건강관심도가 건강증진 메시지 디자인 원리의 중요도와 실행도 인식에 가장 큰 영향을 미치는 것으로 나타났다. 이러한 연구결과에 기반하여 효과적인 건강증진 메시지 개발을 위한 원리와 전략에 대해 논의하였다.

• 지역사회간호학회지
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• 제23권2호
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• pp.165-178
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• 2012

Purpose: The aim of this study was to analyze the tasks of managers who were working in the Customized Visiting Health Services (CVHS) and to prioritize analyzed tasks according to performance frequency, perceived importance, and difficulty. Methods: Job analysis method by Hartley (1999) was used for task analysis and performance frequency, perceived importance, and difficulty were used for prioritize as criteria. A total of 85 managers in the CVHS of public health centers nationwide were recruited through e-mail and mail survey. Using SPSS/WIN 15.0, descriptive statistics, such as frequency distribution, means, median, and standard deviation, were conducted to examine each subject's general characteristics, the frequency, importance, and difficulty of the tasks as well as to prioritize the each task. Results: The job description of the managers revealed 12 duties, 35 tasks, and 104 task elements. Of the 85 managers, 84.8% were classified as nurses, 40.5% were home health care specialists, and 32.9% were social workers. Their coretasks were management of client cases, budget management, and management of work performance and quality assurance. Conclusion: Considering the analyzed managers' tasks and core tasks, we need to examine each manager's role precisely and provide various educational programs for improving overall manager competence.

• 한국조경학회지
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• 제30권2호
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• pp.12-22
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• 2002

This study examines the visitors'evaluations of tourism resources in Insa-dong, which the Seoul metropolitan government has improved recently. This study adopted the method of Importance-Performance Analysis by collecting data through questionnaires. A random sampling of visitors to Insa-dong was conducted in June and July,2001. The survey included questions on the physical and psychological components of Insa-dong's tourism resources. In the case of physical components, eight factors(ancient arts shop, art gallery, atelier, calligraphy shop, pottery arts, traditional tea house, antique shop, traditional clothes) out of thirteen were categorized as 'keeping up the good work'. None of the Physical components was shown as 'low priority'or'possible overkill'. In particular, four factors(restaurant, heritage, Korean-style house and alley, traditional cultural festival) need to be impoved most urgently in terms of visitors'satisfaction. Survey results realize them as high priority in importance but low in performance, thereby designated as, 'concentrate here'. An image of the 'street' showed to be high in importance and identical in performance, so can be categorized between'keeping up the good work'and 'concentrate here'. The results show that unusual outdoor spaces and the festivals of Insa-dong have a significant meaning to the visitors. In the case of psychological components, three factors(general atmosphere experience of unusual atmosphere, appropriateness of stroll time) out of seventeen were categorized as 'keeping up the good work'. Ore factor (shopping) was designated as 'low priority'and not found to be 'possible overkill'. Thirteen factors (various events, possibility of various activity, various flood, richness of play, new experience, education cultural inheritance, parking facilities, resting places, green spaces, meeting places, guide map and information, cleanliness of facilities/convenience) need to be improved mast urgently in terms of visitors' fulfillment. They are perceived as areas of 'concentrate here'. This confirms that attractive events are essential for the recent visitor satisfaction. Furthermore, visitors are not satisfied with its amenity and acccss in Insa-dong despite the improvements. In conclusion, positive impressions, both physical and psychological, should be maintained while factors mentioned to be lacking should be prioritized in order of necessity to improve the image of Insa-dong and solutions need to be found and implemented. The results of this study would be helpful in the planning and management of nsa-dong considering the visitors'requirements.

• Computers and Concrete
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• 제30권2호
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• pp.113-126
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• 2022

Reinforced concrete bearing walls (RCBWs) are one of the most applicable structural systems. Therefore, vulnerability analysis and rehabilitation of the RCBW system are of great importance. In the present study, in order to the more precise investigation of the performance of this structural resistant system, pushover and nonlinear time history analyses based on several assumptions drawing upon experimental research were performed on several models with different stories. To validate the nonlinear analysis method, the analytical and experimental results are compared. Vulnerability evaluation was carried out on two seismic hazard levels and three performance levels. Eventually, the need for seismic rehabilitation with the basic safety objective (BSO) was investigated. The obtained results showed that the studied structures satisfied the BSO of the seismic rehabilitation guidelines. Consequently, according to the results of analyses and the desired performance, this structural system, despite its high structural weight and rigid connections and low flexibility, has integrated performance, and it can be a good option for earthquake-resistant constructions.

• 디지털융복합연구
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• 제17권7호
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• pp.43-47
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• 2019

본 연구는 기존 경쟁력 요인들의 중요도와 만족도의 차이를 통하여 전략적 정책을 파악하는 기존 방법인 중요도-성과도 분석(IPA)을 확장하여 PLS-SEM 기반 IPM(Importance-Performance Map) 방법을 적용하여 정책 방안을 탐색하는데 그 목적이 있다. 이러한 적용을 위해 본 연구에서는 정보기술 융 복합 산업의 전략 요인들 분석하여 글로벌한 세계 경쟁에서 살아남고 파급시킬 수 있는 정책적 방안과 관련된 연구를 대상으로 적용하였다. 본 연구의 대상인 정보기술(IT) 융 복합 산업의 육성은 관련된 산업의 발전과 고용 활성화를 활성화는 효과를 갖고 있다. 따라서 본 연구는 융 복합 산업의 중소기업들의 수출을 활성화하기 위한 방안적 요인을 탐색하는 연구를 대상으로 본 연구방법론의 활용 가능성을 확대하기 위한 목적을 지니고 있다. 이러한 목적을 달성하기 위해 본 연구의 분석 방법론을 적용하였고, 그 분석 결과 IT 융 복합 수출 중소기업에 대한 정책적 방안을 도출하였다. 따라서 본 연구의 분석 결과를 바탕으로 IT 융 복합 산업의 수출 활성화를 위한 요인들을 정책을 수립하고 집행하는 가운데 하나의 전략 수단으로서 본 연구 방법론을 다른 분야의 연구에 활용될 수 있다.

• Journal of Mechanical Science and Technology
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• 제17권6호
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• pp.816-824
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• 2003

In this study, variations of cutting performance with pulse time, open circuit voltage, wire speed and dielectric fluid pressure were experimentally investigated in Wire Electrical Discharge Machining (WEDM) process. Brass wire with 0.25 mm diameter and AISI 4140 steel with 10 mm thickness were used as tool and work materials in the experiments. The cutting performance outputs considered in this study were surface roughness and cutting speed. It is found experimentally that increasing pulse time, open circuit voltage, wire speed and dielectric fluid pressure increase the surface roughness and cutting speed. The variation of cutting speed and surface roughness with cutting parameters is modeled by using a regression analysis method. Then, for WEDM with multi-cutting performance outputs, an optimization work is performed using this mathematical models. In addition, the importance of the cutting parameters on the cutting performance outputs is determined by using the variance analysis (ANOVA).

• The Journal of Asian Finance, Economics and Business
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• 제9권1호
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• pp.93-103
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• 2022

The main purpose of this study was to gauge the patient satisfaction index and subsequently discuss the Importance-Performance (IP) matrix analysis of the inpatient services in the context of the private hospital setting. The Malaysian Customer Satisfaction Index Model was employed as the theoretical framework for the above purposes. This study involving 242 patients in Malaysian's private healthcare sector used a Web-based survey as the main method of data collection. Partial least square structural equation modeling (PLS-SEM) was utilized for data analysis. Using Fornell et al. (1996)'s formula, the resulting patient satisfaction index was slightly lower than the "very satisfied" category, the target level required for positioning as one of the world's premier medical tourism players. The IP matrix showed that medical quality is the main competitive advantage of the private hospitals that can propel their growth in the global healthcare marketplace. The results also indicate that outcome quality, patient rights, and privacy, and service quality are the three quality domains that need to be prioritized for further improvement. On the other hand, the servicescape quality domain needs to be strategized as the unique selling proposition as the performance of the private hospitals in this regard is already extremely good.