• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.36 no.10
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• pp.939-946
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• 2008

Euler codes or Navier-Stokes codes for compressible flows suffer severe degradation in convergence as Mach number approaches zero. The convergence problem arose from the wide disparity in characteristic speeds can be solved using preconditioning methods without large modifications. In this paper, a preconditioned RANS(Reynolds Averaged Navier-Stokes) solver is developed for analysis of low Mach number flows. In order to validate the method, computational examples are chosen and the results are compared with the experimental data and the existing computed results showing a good accuracy and convergence characteristics for steady inviscid, laminar and turbulent flows at low Mach number.

• Korean Institute of Interior Design Journal
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• v.19 no.5
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• pp.226-233
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• 2010

This study is to analyze and determine the emotional design on domestic rec-education space, in order to propose a way to design children rec-education space. A study is on reviewing needs and verify categories of emotional design through interior design of rec-education space, A study procedure will begin with theoretical proofing of children rec-education and move on to needs of emotional design in interior design and types of analysis for it. With this procedure, we will project adequate way for emotional characteristics in rec-education space and will analyze types of it from interior design of rec-education space in nine different domestic brands. With this background, we like to present methods and reveal characteristics of it. The conclusion on this study is described as followed. First, children rec-education space has positively carried types of emotional characteristics: experimental, continuity, and symbolism. Second, Some precondition; application through types of pattern, experimentation on light in space, continuity on linear interior space composition, symbolism in abstract implementation, and physical control over designed subject, has low effectiveness on creating emotional space by applying such scale matters. Third, the actual interior design subject matters and supporting facilities' textural accommodation is inadequately built for their majority, children, whether it is direct or indirect for contact. Forth, Even though to carry emotional space needs some kinds of story telling and prerequisite sequential space composition, there are lack of applicable space compositions. For this reason, it needs on going study in emotional space for children rec-education space. Last, there are needs for researching a depth understanding and presenting different characteristics of emotional interior design by brands.

• Journal of Internet Computing and Services
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• v.12 no.3
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• pp.57-67
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• 2011

Trust is generally assumed to be an important precondition for people's adoption of e-government services. This study analyzes the direct and indirect impact of information privacy, interactivity, subjective norms and words-of-mouth on perceived trust of e-government services and trust toward government. The Partial Least Square(PLS) was applied to the citizen survey data for hypotheses testing. PLS permits the simultaneous testing of cause-effect hypotheses while also allowing evaluation of the measurement model. Statistical results indicate that interactivity, subjective norms and words-of-mouth positively affects perceived trust of e-government services, which in turn affects the level of political efficacy and the trust toward the government. Interactivity has been found to affect words-of-mouth as well. However, information privacy has no significant effect on the trust of e-government services.

• The Journal of Korean Medicine
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• v.29 no.2
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• pp.60-70
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• 2008

Objectives: The aim of the present investigation was to determine whether the finger photoplethysmography (PPG) of the young will become analogous to those of the old when the PPG harmonic components in the young decrease. Methods: The PPG was measured in 46 old men (21 males and 25 females) over the age of 60 years and 10 young men (5 males and 5 females). We acquired the representative pulse waveform of old men by averaging the PPG waveforms measured in the old men. after the PPG harmonic components in the young men were diminished with notch filtering, we compared the representative pulse waveform of old men and those of the young men. Results: The PPG waveform of the young males became analogous to the representative pulse waveform of the old as the PPG harmonic components in the young were diminished with notch filtering. Especially after the second harmonic component in the young was diminished with notch filtering, increase of the Pearson's correlation coefficient was prominent. On the other hand, the Pearson's correlation coefficient between the PPG waveforms of the young females and that of the old deceased after the second harmonic component diminished in the young. Conclusions: Decrease of the second harmonic component may be a precondition of typical age-related change of the pulse waveform in the healthy male.

• The Journal of the Korea Contents Association
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• v.13 no.5
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• pp.223-233
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• 2013

As the injunctive effect on the real estate gets announced in public once the seizure register gets exercised in terms of auction and the action of disposal by the real estate owner afterwards becomes nullified in the relationship with a seizure creditor or a successful bidder, the register performed by the cause of disposal action that cannot confront with the seizure or provisional seizure, becomes cancelled in virtue of a registration officer's office. Accordingly, in case of being a singular successor who relatively loses property in a relationship toward the successful bidder due to the injunctive effect of provisional seizure, the identity with building owner and land owner as the precondition of establishing legal superficies according to the custom must be decided based on the time of provisional seizure. The Supreme Court Decision 2010Da52140 delivered on October 18, 2012 has great significance from the fact that it has settled inconsistency in existing precedent cases with such purpose.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.44
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• pp.3-29
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• 2009

The PECL have been drawn up by an independent body of experts from each member state of the european union under a project supported by the european commission and many other organizations. Salient features of the general provisions of the PECL, freedom of contract and pecta sunk servanda, good faith and fair dealing, most of the PECL are non-mandatory. The CISG uses the term fundamental breach in various setting. The concept of fundamental breach is a milestone in its remedial provisions. Its most important role is that it constitutes the usual precondition for the contract to be avoided(Art. 49., Art. 51., Art. 64., Art. 72., Art. 73). In addition, where the goods do not conform with the contract, a fundamental breach can give rise to a requirement to deliver substitute goods. Furthermore, a fundamental breach of contract by the seller leaves the buyer with all of his remedies intact, despite the risk having passed to him(Art. 70). Basically, PECL, PICC generally follows CISG, it was similar to all the regulation's platform though the terms and content sometimes differ. For example regarding to the non-performance and remedies, in the case of non-performance, that is the PECL/PICC term analogous to breach of contract as used in the CISG. Furthermore the PECL/PICC used fundamental non-performance refered to in PECL Art. 8:103 ; PICC Art. 7.1.1. correspond generally to the concept of fundamental breach referred to in CISG Art. 25. The main significance of the fundamental non-performance, in any systems, is to empower the aggrieved party to terminate the contract. The need for uniformity and harmony in international commercial contracts can be expected to lead to growth of international commerce subject to the CISG, PICC, and PECL. It is hoped that the present editorial remarks will provide guidance to improve understanding between the contractual party of different countries in this respect and following key-words.

• Journal of The Korean Association of Information Education
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• v.17 no.3
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• pp.329-337
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• 2013

Introductory programming course using robots that makes good effect to learners. I investigated that the effects on flow at using robots of introductory programming course. According to experiment result, the flow level showed significant change and all of it's element(antecedents, experiences, effects) had changed significantly. This result means that using robots of introductory programming course makes effect that is very positive in flow level of learners. There was strong interrelation by each element of flow in the result of correlation analysis about flow element. In particular, interrelation of antecedents element and experience element was high. Therefore, using robot is precondition of flow, and the level of experience element is high according to level of antecedents, and also experience element elevate the learner's intrinsic satisfaction. The conclusion is that using robots of introductory programming course is helpful enhancing learner's flow level and is positive in study achievements.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.5 no.2
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• pp.269-279
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• 1998

In nursing research that the data is collected through clinical observation, analysis of clinical recording or coding of interpersonal interaction in clinical areas, testing and reporting interrater reliability is very important to assure reliable results. Procedures for interrater reliability in these studies should follow two steps. The first step is to determine unitizing reliability, which is defined as consistency in the identification of same data elements in the record by two or more raters reviewing the same record. Unitizing reliability have been rarely reported in previous studies. Unitizing reliability should be tested before progressing to the next step as precondition. Next step is to determine interpretive reliability. Cohen's kappa is a preferable method of calculating the extent of agreement between observer or judges because it provides beyond-chance agreement. Despite its usefulness, kappa can sometimes present paradoxical conclusions and can be difficult to interpret. These difficulties result from the feature of kappa which is affected in complex ways by the presence of bias between observers and by true prevalence of certain categories. Therefore, percentage agreement should be reported with kappa for adequate interpretation of kappa. The presence of bias should be assessed using the bias index and the effect of prevalence should be assessed using the prevalence index. Researchers have been reported only global reliability reflecting the extent to which coders can consistently use the whole coding system across all categories. Category-by-category reliability also need to be reported to inform the possibility that some categories are harder to use than others.

• KDI Journal of Economic Policy
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• v.14 no.4
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• pp.63-77
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• 1992

This paper examined interactions between stock price and key macroeconomic variables over the period of 1975-1992. It has been found that more than 60% of real stock price changes can be well explained by movements in key macroeconomic variables, particularly in net exports and industrial production. On the other hand, real stock price changes were found to have a significant explanatory power for plant and equipment investments for the sample period of 1975-1985 during which the stock market was stable. In contrast, no significant linkage between stock price changes and investments emerged over the subsample period of 1986-92 despite the sharp expansion of the stock market in terms of trade volume. Based on such findings, two major policy implications were derived; (i) the government's intervention in the stock market to stabilize stock prices would be ineffective unless the stable economic growth supports the market fundamental, and (ii) the stock price stability is a precondition for the stock market to play a key role in mobilizing resources to finance the firm's long-term capital.

• Journal of the Korean Home Economics Association
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• v.47 no.7
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• pp.97-107
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• 2009

This study investigated the impact of long-term relationship orientation on emotional characteristic in fashion stores and relationship characteristic between middle-aged and senior women and salespeople. This study employed survey method with questionnaire. Data were collected from 579 women who were from the age of forty to seventy. The data were analyzed using statistic methods(SPSS 15.0 and Amos 5.0) such as frequency analysis, cronbach $\alpha$, exploratory factor analysis, second-order confirmatory factor analysis, confirmatory factor analysis and structural equation modelling. The findings of this study were concluded as follows; Firstly, the income significantly affected on emotional characteristics(p < 0.01), but had no significant effect on long-term relationship orientation(p < 0.05). The higher income, the more respondents exhibited positive attitude and sensitive emotional characteristics as a sense of sight, hearing, smell, tactile and feeling to salespeople in the fashion stores. The path of structural equation was implemented as income variables $\rightarrow$ emotional characteristics $\rightarrow$ (relationship with salespeople variables $\rightarrow$ )commitment $\rightarrow$ long-term relationship orientation which turned out to be statistically significant at the 95% confidence level. Secondly, senior group(55~70yrs) was more positive relationship with salespeople compared to middle-aged group(40~54yrs). The precondition of get satisfaction and feeling of being cared from the salespeople were critical for long-term relationship orientation. The path of structural equation was carried out as age variables $\rightarrow$ relationship with salespeople variables $\rightarrow$ commitment $\rightarrow$ long-term relationship orientation which turned out to be statistically significant at the 95% confidence level.