The purpose of this study was to measure the job aspiration and examine the relationship between that and job satisfaction for wage-earners using the fourth Korean Working Conditions Survey(KWCS). We use the stochastic frontier model for measuring the job aspiration and testing its effect on the job satisfaction. Fstochastic frontier model is introduced to explain that each company potentially produces less than it might due to a degree of job aspiration, measured by decomposing the residuals. In this model framework, it can be regard that the upper bound of the job satisfaction is the ideal frontier, and the bias between the ideal condition and the reality is the job aspiration. If this concept is applicable to the job aspiration, we can measure this bias and investigate a relationship with the job satisfaction. We find that there exists the job aspiration, and it is significantly negatively correlated with the job satisfaction. This result supports that if job aspiration increases, job satisfaction level decreases.

This study estimates the classification criteria which distinguishes the types of omega-3 health functional foods, fish oils and fish oil usages through 13C-NMR spectra and fatty acids contents analysis. The major fatty acids of omega-3, eicosapentaenoic acid (EPA, C20:5) and docosahexaenoic acid (DHA, C22:6) are being analyzed. 10 ethyl ester (EE) forms and 10 triglyceride (TG) forms are the most common types of fish oils for 20 omega-3 products. Gas chromatography (GC) analysis generally shows the matching EPA and DHA contents of the products listed on the notation. But EE form contents of EPA and DHA are higher and are more varied than the TG form. Most of the samples of EPA/DHA ratio show different content ratios of indicated on the products when comparing with standards. The 13C-NMR analysis of EPA and DHA on sn-1,3 and sn-2 carbonyl peak position with fish oil triglycerides display whether the reconstituted triglycerides (rTG) are being confirmed or not. As a result of the 9 TG form, the 10 TG products showed similar values: EPA sn-1, 3; 13.46~15.66, sn-2; 3.00~4.52, DHA sn-1, 3; 2.43~4.40, sn-2; 3.84~6.36. But one product showed lower contents (EPA: sn-1, 3; 5.88, sn-2; 2.86, DHA sn-1, 3; 2.29, sn-2; 5.95) of EPA, thus it can be considered a different type of oil and only matched six products according to the label. This study is intended to provide basic materials which identify the status for the types and quality of omega-3 fish oil products according to fatty acids profiles and the 13C-NMR spectrum confirmed the location specificity of EPA and DHA.

유비쿼터스 컴퓨팅 환경은 새로운 기술로 구현된 환경으로 그에 적합한 새로운 사용성 평가가 필요하다. 그러나 기존의 사용성 평가를 그대로 도입할 수 없으므로 이에 대한 연구가 수반되어야 하고 심리적인 변인도 함께 고려되어야 할 것이다. 이를 위해서는 기기적 측면의 사용성 평가만이 아니라 서비스 시나리오도 함께 이루어져야 한다. 따라서 본 연구는 시나리오적 측면에서 사용성 요인을 분류하고 기기적 측면에서 심리적인 요인인 통제감을 중심으로 진행되었다. 연구 1에서 현존하는 사용성 요인을 유사성과 어플리케이션 시나리오에 따라 중 요성을 재분류 한 결과 10개의 그룹이 생성되었다. 연구 2에서는 구체적으로 유비쿼터스 환경에서 기기의 친밀감과 복잡성이 통제감의 환상을 유발시킬 수 있는지 실험해보았다. 그 결과, 기기의 친밀감과 복잡성이 통제감의 환상을 유발시키는 변인으로 밝혀졌다.