• 음성과학
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• 제14권4호
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• pp.53-64
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• 2007

This paper attempts to verify the theoretical claims in Syntax ($Bo{\check{s}}kovi{\acute{c}}$ & Lasnik, 2003; Kim, 1999, 2004) about the phrasing in English that-clauses, presenting an acoustic experiment conducted to observe the patterns of edge tones at the boundaries of that. In the experiment, two different that clauses, complement and relative clauses, were varied in forms (that-retention, that-deletion, adverb insertion before that) and length. Results showed that edge tones, if occurred, mostly showed up before the complement clauses in that-deletion sentences (67%), and that their positions polarized in adverb insertion sentences (56% before toot and 44% after toot). In the relative clauses, phrasing mostly occurred before toot as opposed to after toot in that-retention (73%) and adverb insertion sentences (87%). Additionally, phrasing tends to occur more frequently as the sentences get longer. The results suggest that the previous claims based on syntax are not consistent with the results of the current phonetic experiment. This may be interpreted as stating that syntactic boundaries do not always indicate phonetic phrasing, and that there may be some other factors to determine phrasing patterns, for example, rhythmic phrasing operating at the surface level of speech.

• Asia pacific journal of information systems
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• 제14권1호
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• pp.185-209
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• 2004

The purpose of this study is to propose and test a model of customer retention in Internet shopping malls when switching barriers and comprehensive customer value exist in terms of economic and experiential aspects. The literature about customer retention propose that switching barriers are important factors other than satisfaction influencing customers' intention to remain with a specific supplier. The switching barriers mean anything that makes customers' defection difficult or costly and are consisted of perceived switching costs, attractiveness of alternatives and virtual relationships. The Customer Value Scale by Mathwick(2001) is applied to this study as economic value, shopping efficiency, service excellence, aesthetic appeal and playfulness(Zeithaml, 1988; Holbrook, 1994). The analyses showed partial support for the affirmative effect of customer values and switching costs and full support for the affirmative Influence of satisfaction on repurchase intention in the Internet shopping mall environment. But the attractiveness of alternatives and virtual relationship did not have a significant Influence like the result of Jones(1998)'s study of the service industry.

• Nuclear Engineering and Technology
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• 제32권4호
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• pp.379-394
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• 2000

As an in-vessel retention (IVR) design concept in coping with a severe accident in the nuclear power plant during which time a considerable amount of core material may melt, external cooling of the reactor vessel has been suggested to protect the lower head from overheating due to relocated material from the core. The efficiency of the ex-vessel management may be estimated by the thermal margin defined as the ratio of the critical heat flux (CHF）to the actual heat flux from the reactor vessel. Principal factors affecting the thermal margin calculation are the amount of heat to be transferred downward from the molten pool, variation of heat flux with the angular position, and the amount of removable heat by external cooling In this paper a thorough literature survey is made and relevant models and correlations are critically reviewed and applied in terms of their capabilities and uncertainties in estimating the thermal margin to potential failure of the vessel on account of the CHF Results of the thermal margin calculation are statistically treated and the associated uncertainties are quantitatively evaluated to shed light on the issues requiring further attention and study in the near term. Our results indicated a higher thermal margin at the bottom than at the top of the vessel accounting for the natural convection within the hemispherical molten debris pool in the lower plenum. The information obtained from this study will serve as the backbone in identifying the maximum heat removal capability and limitations of the IVR technology called the Cerium Attack Syndrome Immunization Structures (COASISO) being developed for next generation reactors.

• 대한소아치과학회지
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• 제23권4호
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• pp.800-817
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• 1996

In this study, we tried to evaluate the effect of Amalgambond liner application on the degree of marginal leakage and retention of amalgam restoration by comparing with that of the Copalite and All-bond 2. The results obtained from this experiment were as follows; 1. Tensile strength representing the bond between amalgam and tooth structure was the highest in Amalgambond, and All-Bond 2, Copalite in descending order. There were statistically significant difference between each group(P<0.05). 2. The degree of microleakage in Amalgambond was lower than that of All-Bond 2, and Copalite, but no stastically significant difference could be found (P>0.05). 3. The liner such as Amalgambond or All-Bond 2 were evaluated to be superior to the conventional Copalite in bond strength as well as in microleakage. But the result of this study could not show the superiority of one material over the others; Amalgambond and All-bond 2. Besides the results of the study, other factors, such as practical convenience, should be considered in determining the selection of material. The support of welldesigned clinical studies on this subject are in demand.

• 대한산업공학회지
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• 제39권4호
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• pp.298-312
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• 2013

This paper compares efficiency results and performance targets for academic departments in a local private college using DEA (Data Envelopment Analysis). Because of an aging society, a smaller school-age population entering colleges, and enhanced accreditation standards by the government, colleges and universities are not recruiting and retaining sufficient students and therefore are struggling for survival. In contrast to popular four-year undergraduate universities concentrated in Seoul and its satellite cities, retaining students is critical for the survival of local private colleges in poor or remote regions. Therefore, it is very important to identify the factors involved in the retention of students in the various departments of a college. However, given the different characteristics of the departments, it is difficult to identify one unique or robust set of standards to evaluate their performance. The purpose of this paper is to maximize student retention capabilities by ensuring that additional resources are assigned to efficient DMUs, while, inefficient DMUs are given benchmarked targets. Based on previous studies and college accreditation standards, this paper presents indices to be used in evaluating the efficiency of academic departments in a college. In evaluating relative efficiency, this paper uses the output-oriented BCC model. To define target levels to be achieved for efficient DMU, a multi-stage DEA procedure is used.

• 한국물환경학회지
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• 제22권3호
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• pp.540-545
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• 2006

The anaerobic digester supernatant (ADS) with high $NH_4-N$ concentration often results in a $NH_4-N$ overloading to the mainstream process of municipal wastewater treatment plant (MWTP). The nitrogen removal from the ADS is therefore important in order to achieve a stable mainstream process performance as well as to prevent $NH_4-N$ overloading due to ADS. Recently because of several advantages compared to the full nitrification, many works have shown interests in controlling the build-up of $NO_2-N$ in nitritation processes. The application of nitritation could save the aeration power compared to the full nitrification processes. In addition, the denitrification of $NO_2-N$ could reduce organic carbon requirements compared to the $NO_3-N$ denitrification. The purpose of this research was to find out the characteristics of the ADS nitritation and $NO_2-N$ accumulating factors from the laboratory reactor study. As a result based on the long-term laboratory experiment, it can be concluded that the degree of nitritation was closely related with the availability of alkalinity, free ammonia (FA), solid retention time (SRT) and solid concentration in the nitritation reactor.

• 동의생리병리학회지
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• 제20권6호
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• pp.1375-1387
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• 2006

Through abdominal diagnoses, deficiency and excess, and cold and heat of the eight principles for differentiating syndromes can be determined, pathogens such as fluid retention, dry stool, retention of undigested food, abdominal mass, blood stagnation, stagnation of Gi, deficiency of Kidney Yang, and, spermatorrhea can be identified, nature and stages of the symptoms can be understood and then pathogenesis analyzed. Abdominal diagnosis can be one of primary factors in deciding treatment, expecting prognosis and treatment effect, and choosing herbal prescriptions. Representative herbs for epigastric stuffiness/fullness are Radix Ginseng, Pericarpium Citri, etc; for fullness of epigastrium, Rhizoma Pinelliae, Pericarpium Citri, Rhizoma Rhei, etc.; for severely rigid epigastrium, Radix Glycyrrhizae, Radix Ginseng, etc.; for epigastric pain, Rhizoma Pinelliae, Pericarpium Citri, etc.; for epigastric fullness and rigidity, Rhizoma Coptidis, Radix Ginseng, etc.; for feeling of obstruction in the epigastirum, Radix Bupleuri, Radix Ginseng, etc.; for palpitation in the epigastrium, Radix Glycyrrhizae, Ramulus Cinnamomi, etc. It is essential to rightly diagnose through comprehensive analysis of the data gained by the four methods of diagnosis, and in doing this, further studies on how to utilize abdomen diagnosis for clinical practice.

• 한국보건간호학회지
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• 제33권2호
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• pp.270-283
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• 2019

Purpose: The aim of this study was to identify the job insecurity, job satisfaction, and organizational commitment of non-regular visiting nurses working at public health centers, and evaluate the effects of job insecurity on the job satisfaction and organizational commitment. Methods: This study was a descriptive survey study. One hundred forty-three visiting nurses, who were non-regular hired by 16 public health centers in B city, were selected using a convenient sampling method. Results: The results were analyzed using SPSS/Win 21.0. A feeling of helplessness (among job insecurity factors) and retention intention significantly affected the job satisfaction of non-regular visiting nurses, and their explanation power was 20%. Retention intention, a feeling of helplessness, and age significantly influenced the organizational commitment, and their explanation power was 26%. Conclusion: Therefore, it would be necessary to stabilize the employment type, provide appropriate promotion and compensation for nurses according to their work performance, and reduce the number of non-regular employees to increase the job satisfaction and organizational commitment of non-regular visiting nurses.

• 한국염색가공학회지
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• 제19권1호
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• pp.31-36
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• 2007

There are several factors in the degradation of textiles. The crucial factors in textile weakening are humidity, dust, smoke, sunlight, microorganisms and so on. Especially silk fabrics are more susceptible to microorganisms than other fabrics, because they are mainly consisted of proteins. In this study, we investigated the activities for degrading casein and silk fibers with 2 strains, Bacillus cereus TX1 and Pseudomonas fluorescens TX 2, isolated from domestic museums. They were compared to those of standard control strains, Klebsiella pneumoniae and Staphylococcus aureus, usually used for the antibiotic test of fabrics. The caseinolytic activities of K. pneumoniae and S. aureus were higher than those of isolated strains. But in the cases of silk fiber degrading, B. cereus TX 1 showed the highest activity on both silk 1 and silk 2. Therefore, caseinolytic activities were not coincident with the activity to degrade silk fibers. All strains degraded silk 1(strength retention 100%) better than silk 2(strength retention 50%). It means that bacteria mainly participate in the early stage of degrading silk fabrics, but as time goes by, the importance of bacteria for degrading silk fabrics would decreased. Even though the importance of bacteria may decrease, controlling bacterial activity is necessary to preserve historic silk fabrics.

• 한국치위생학회지
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• 제15권3호
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• pp.435-442
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• 2015

Objectives: The purpose of this study was to investigate the influencing factors of removable dentures satisfaction in the elderly. Methods: A self-reported questionnaire was filled out by 256 elderly in Jeollanam-do from September 1, 2013 to June 30, 2014. The questionnaire consisted of general characteristics of the subjects, denture related characteristics systemic health characteristics and dental health behavior. Removable dentures satisfaction was adapted from Ban. The questionnaire for Removable dentures satisfaction included general treatment satisfaction, masticatory function satisfaction, denture retention satisfaction, aesthetic satisfaction measured by Likert 5 scale. Cronbach's alpha was 0.850 in the study. Data were analyzed for a t-test, one-way ANOVA and multiple regression analysis by using SPSS(SPSS 18.0, USA) program. Results: According to subjective and systemic health condition and oral health condition, there was a statistically significant increase in general satisfaction of treatment, masticatory satisfaction of function, denture satisfaction of retention, aesthetic satisfaction. The overall satisfaction for removable denture showed a significant improvement. In the multiple regression analysis, variation of removable denture satisfaction was positively associated with oral health status{good(b=0.736, p=0.000)}, denture treatment services{dental hospital clinic(b=0.327, p=0.023)}, and systemic health status{good(b=0.241, p=0.047)}. Conclusions: Satisfaction of removable dentures may have a positive impact on oral health condition, hospital type, and associated systemic disease. It is necessary to develop incremental care programs for oral health and systemic health and to make public opinion to encourage the program.