• 간호행정학회지
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• 제15권2호
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• pp.233-243
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• 2009

Purpose: The purposes of the study were to examine whether nurses' followership style influence organizational effectiveness and to test the model of organizational effectiveness including the factors of nursing organizational culture, leadership style, and followership style. Methods: Data were collected from July 10th to september 20th in 2006 from 451 nurses working in four acute care hospitals. Data analysis were performed by Chi-square test, ANOVA, Duncan test, Pearson Correlation, and maximum likelihood estimation, using the SAS and LISREL 8.30 program. Results: The findings showed that the types of nurses' followership were classified as passive (21.1%), alienated (8.2%), conformist (16.4%), pragmatist (35.9%), and effective style (18.4%). There was significant difference in the organizational effectiveness among the nurses with different followership styles. In testing the path model, transformational, transactional leadership directly influenced followership style. Followership directly influenced organizational effectiveness. Conclusion: The overall fitness of the model was good, evidenced by general fitness index (GFI)=.94, adjusted goodness of fitness index (AGFI)=.82, and root mean square residual (RMSEA)=.06. Based on the findings, it is recommended to develop a program for enhancing effective followership in nursing organization.

• International Journal of Automotive Technology
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• 제8권5호
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• pp.637-650
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• 2007

A new on-line fault detection and isolation(FDI) scheme has been proposed for engines using an adaptive neural network classifier; this paper investigates the robustness of this scheme by evaluating in a wide range of operational modes. The neural classifier is made adaptive to cope with the significant parameter uncertainty, disturbances, and environmental changes. The developed scheme is capable of diagnosing faults in the on-line mode and can be directly implemented in an on-board diagnosis system(hardware). The robustness of the FDI for the closed-loop system with crankshaft speed feedback is investigated by testing it for a wide range of operational modes, including robustness against fixed and sinusoidal throttle angle inputs, change in load, change in an engine parameter, and all changes occurring simultaneously. The evaluations are performed using a mean value engine model(MVEM), which is a widely used benchmark model for engine control system and FDI system design. The simulation results confirm the robustness of the proposed method for various uncertainties and disturbances.

• KIEAE Journal
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• 제17권5호
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• pp.43-50
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• 2017

Purpose: Residential cooking(gas or electricity) emits many air pollutants. For Removal of these contaminants, range hood is play an important role in the cooking activities. However, deterioration about performance of range hood can be occur in used range hood which is not verified on performance by testing balancing and adjusting in apartment. So, purpose of this study is to improve the range hood against cooking-generated contaminations. Method: To improve hood, survey of range hood which mounted in apartment have to conduct at first. In this study, the survey was conducted for 3 steps. First, Visual inspection for conditions of range hood. Second, questionnaire of operating and maintenance method. Third, interview with user about need for improvement, complainant. Finally, we integrated the survey for range hood and introduced the probable cause of deterioration through this comprehensive survey. Result: Result of measurement for air volume for range hood, A measured air volume has reduced by 41.4, 38.0, 32.0% each step from rated air volume. There are lots of reasons of this phenomenon including to maintenance, air path of duct, lower-cost devices, exhaust ports. For solve this problem, guideline about operating hood, user in apartment will have to supply with maintenance information at first.

• 대한음성학회지:말소리
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• 제35_36호
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• pp.175-188
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• 1998

Database segmented and labeled up to phoneme level plays an important role in phonetic research and speech engineering. However, it usually requires manual segmentation and labeling, which is time-consuming and may also lead to inconsistent consequences. Automatic segmentation and labeling can be introduced to solve these problems. In this paper, we investigate a method to improve the performance of automatic segmentation and labeling system, where Spectral Variation Function(SVF), modification of silence model, and use of energy variations in postprocessing stage are considered. In this paper, SVF is applied in three ways: (1) addition to feature parameters, (2) postprocessing of phoneme boundaries, (3) restricting the Viterbi path so that the resulting phoneme boundaries may be located in frames around SVF peaks. In the postprocessing stage, positions with greatest energy variation during transitional period between silence and other phonemes were used to modify boundaries. In order to evaluate the performance of the system, we used 452 phonetically balanced word(PBW) database for training phoneme models and phonetically balanced sentence(PBS) database for testing. According to our experiments, 83.1% (6.2% improved) and 95.8% (0.9% improved) of phoneme boundaries were within 20ms and 40ms of the manually segmented boundaries, respectively.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2005년도 춘계학술대회 논문집
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• pp.253-257
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• 2005

A tube hydroformability testing system was designed and fabricated so as to observe the forming process and to apply forming condition along arbitrarily pre-programmed internal pressure-axial feed path. The forming limit diagram of A6063 extruded tube, of 40.6 mm outer diameter and 2.25 mm thickness, was successfully obtained through free bulging and T-forming tests except the region of high positive minor strain. It is found that the data points marked on the FLD are mostly located near the strain paths from the finite element analysis excluding the cases of large axial feed. There exist data points even in the area beyond the uniaxial tension mode, since the reduction in thickness decreases due to the axial feed. The forming limit from T-forming test was considerably lower than that from free bulge test. It seems because the deformation is localized at the pole.

• 소성∙가공
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• 제24권3호
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• pp.176-180
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• 2015

The current study is concerned with the prediction of fracture strains for DP980 steel sheets over a wide range of loading paths. The use of DP980 steel is increasing significantly in automotive industries for enhanced safety and higher fuel efficiency. The material behavior of advanced high-strength steels (AHSSs) sheets sometimes show unpredictable and sudden fracture during sheet metal forming. A modified Lou-Huh ductile fracture criterion is utilized to predict the formability of AHSSs because the conventional forming limit diagram (FLD) constructed based on necking is unable to evaluate the formability of AHSSs sheets. Fracture loci were extracted from three dimensional fracture envelopes by assuming the plane-stress condition to evaluate equivalent plastic strains at the onset of fracture for a wide range of loading paths. Three different types of specimens -- pure shear, dog-bone and plane strain grooved -- were utilized for tensile testing to calibrate the fracture model of DP980 steel sheets. Fracture strains of each loading path were evaluated such that there shows little deviation between fracture strains predicted from the fracture model and the experimental measurements. From the comparison, it is clearly shown that the three dimensional fracture envelopes can accurately predict the onset of the fracture of DP980 steel sheets for complicated loading conditions from compressive loading to shear loading and to equibiaxial tensile loading.

• 소프트웨어공학소사이어티 논문지
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• 제24권2호
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• pp.35-45
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• 2011

금질 기법을 이용한 테스트 데이터 자동 생성 기법은 오랫동안 연구되어 왔으며, 효율적인 테스트 데이터 생성 방법 중 하나이다. 그러나 인풋 도메인이 넓을 경우, 기존의 담금질 기법은 이웃 선택 기법의 한계 때문에 나쁜 성능을 보였다. 이러한 한계를 극복하기 위해, 우리는 새로운 이웃 선택 기법인 분기 거리 이웃 선택 방법을 제안한다. 제안된 기법의 성능을 검증하기 위해서 우리는 분기 거리 이웃 선택 기법, 기존의 이웃 선택 기법 그리고 랜덤 테스트 데이터 생성 기법을 비교하는 실험을 수행하였다. 실험 결과 제안된 기법이 2가지 기법에 비해 우수한 성능을 보임을 알 수 있었다.

• 아태비즈니스연구
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• 제11권4호
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• pp.167-176
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• 2020

Purpose - In this study, we tried to find that the relationship between the perception of customers on the airline service quality, customer satisfaction, and intention to reuse in Chinese low-cost carriers industry. Design/methodology/approach - We conducted the empirical study for hypotheses testing using the survey data of experienced users in Chinese low-cost carriers service. In this study, reliability and factor analysis were conducted using SPSS 26.0, the path analysis was performed using AMOS 24. Findings - We found that the customer's perception of aviation operation, reservation/ ticketing, online information service provided by Chinese low-cost carriers are positively associated with customer satisfaction. In addition, it was confirmed that customer satisfaction is positively related to the intention to reuse. Research implications or Originality - Based on the results of analysis, it was confirmed that the basic sub-services of the airline are also important in the low-cost carriers services market.

• The Journal of Asian Finance, Economics and Business
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• 제8권4호
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• pp.181-191
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• 2021

The aim of the study is to empirically investigate and analyze the influence of public welfare, audit findings, and follow-up of audit recommendations on audit opinion with the disclosure level of financial reports as an intervening variable using agency theory and signaling theory. To achieve this purpose, a quantitative research method was employed. Population of this study is Provincial Government Financial Reports in Indonesia for fiscal years 2016 to 2018. There were 84 financial reports that met the criteria of purposive sampling. The data were gathered from the websites of the Audit Board of the Republic of Indonesia and the Indonesian Central Bureau of Statistics. In this study, the hypothesis-testing tool is path analysis using the Statistical Package for Social Sciences version 15. Based on the multiple regression analysis, the results show that audit findings, public income, and the disclosure level of financial reports significantly influenced audit opinion. Besides, the follow-up of audit recommendations and public health significantly influenced audit opinion through the disclosure level of financial reports. This study suggests that, in order to have better audit opinion, local governments need to improve public welfare, follow-up audit finding, and disclose more details in financial report.

• 한국치위생학회지
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• 제20권6호
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• pp.925-936
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• 2020

Objectives: This study proposes a hypothetical model for job stress, job satisfaction, organizational commitment, and turnover intention through social exchange relations (LMX, TMX) and political skills (LPS) for dental hygienists working in dental clinics hygienists. Methods: A self-administrated questionnaire was administered from April 1 to May 12, 2020, with 171 dental clinic hygienists participating in Seoul, Busan and Gyeongnam. The data were analyzed using SPSS and AMOS statistical analysis programs. Results: First, in the hypotheses testing, a total of 7 of 18 hypotheses were supported. Second, the relatonship between leader-member exchange (LMX) or team-member exchange (TMX) and turnover intention, a full mediating effect of job stress or job satisfaction or organizational commitment on that exchange was found. However, the leader's political skills on the path to turnover intention were not statistically significant. Conclusions: It is considered that education to enhance job skills, support for leisure activities, and time to communicate opinions with each other should be provided to create an organizational culture that satisfies all members, thereby lowering the intention to turnover.