목적 : 본 연구의 목적은 최근 주목받고 있는 가상현실을 이용한 뇌졸중 환자의 중재방법에 대해 알아보고 체계적으로 분석, 정리하는 것이다. 연구방법 : 자데이터 베이스인 한국 학술 연구 정보 서비스(RISS), Google scholar, 국가 전자 정보 도서관(NDSL)에서 2009년부터 2017년까지 게시된 논문을 검색하였다. 검색용어는 ‘가상현실’, ‘뇌졸중’으로 검색하였고 각 전자데이터 베이스 763건에서 최종 7건을 선정하였다. 수집된 7개의 연구는 PICO 분석방법을 통해 체계적으로 제시하였다. 결과 : 본 연구를 위해 수집한 연구는 신체기능 중재와 심리 및 인지기능 중재로 구분하여 결과를 제시하였다. 신체기능을 위한 연구 중 상지에서는 손의 기민성 및 전반적인 상지기능에서 유의미한 결과를 보였고, 하지에서는 균형능력, 보행기, 근력에서 유의한 차이를 보였다. 또한 심리 및 인지기능에서는 스트레스와 몰입, 우울감, 실행기능에서 통계적으로 유의한 결과를 보였다. 결론 : 본 연구는 가상현실 중재를 뇌졸중 환자에게 적용하였을 때의 결과를 신체기능과 심리 및 인지기능 영역으로 나누어 고찰하였다. 본 연구를 토대로 뇌졸중 환자의 가상현실 중재결과에 대한 기초자료로 사용되어 임상적인 중재 효과를 살펴보기 위한 근거자료로 활용될 수 있을 것이다.

The effect of particle size distribution on green and sintered properties of Fe-Cr-Mo prealloy powder was investigated in this study. For the study, prealloyed Fe-Cr-Mo powders with different particle sizes were mixed as various ratios and cold compacted at various pressure and sintered at for 30 min, atmosphere in the continuous sintering furnace. The results shows that the powders with large particle size distribution have high compressibility and low ejection force. However the green strength are much less than those with small particle size distribution. Tensile prperties of the sintered specimes with large particles size also have high strength and elongation.

In this study, the effect of milling time on the microstructure and phase transformation behaviors of Ni-12 wt.%B powders was investigated using vibratory ball milling process. X-ray diffraction patterns showed that the phase transformation of mixed Ni-B elemental powder occurred after 50 hours of milling, with a formation of nickel boride phases. Through the study of microstructures in mechanical alloying process, it was considered that ball milling strongly accelerates solid-state diffusions of the Ni and B atoms during mechanical alloying process. The results of X-ray photoelectron spectroscopy showed that most of B atoms in the powder were linked to Ni with a formation of nickel boride phases after 200 hours of milling. It was finally concluded that mechanical alloying using ball milling process is feasible to synthesize fine and uniform nickel boride powders.

Cemented tungsten carbide has been used in cutting tools and die materials, and is an important industrial material. When the particle size is reduced to ultrafine, the hardness and other mechanical properties are improved remarkably. Ultrafine cemented carbide with high toughness and hardness is now widely used. The objective of this study is synthesis of nanostructured WC-Co powders by liquid phase method of tungstate. The precursor powders were obtained by freezen-drying of aqueous solution of soluble salts, such as ammonium metatungstate, cobalt nitrate. the final compositions were WC-10Co. In the case of liquid phase method, it can be observed synthesis of WC-10Co. The properties of powder produced at various temperature, were estimated from the SEM, BET and C/S analyser.

Wear behaviors of gas atomized and extruded Al-Si alloys were investigated using the dry sliding wear apparatus. The wear tests were conducted on Al-Si alloy discs against cast iron pins and vice versa at constant load of 10N with different sliding speed of 0.1, 0.3, 0.5m/s. In the case of Al-Si alloy discs slid against the cast iron pins, the wear rate slightly increased with increasing the sliding speed due to the abrasive wear occurred between Al-Si alloy discs and cast iron pins. Conversely, in the case of cast iron discs against Al-Si alloy pins, the wear rate decreased with increasing the sliding speed up to 0.3m/s. However, the wear rate increased with increasing the sliding speed from 0.3m/s to 0.5m/s. It could be due to adhesive wear behavior and abrasive wear behavior_between cast iron discs and Al-Si alloy pins.

Previous studies have suggested that individuals need to invest in the accumulation of career competencies. To demonstrate how to acquire career competencies, a model consisting of the knowing why, knowing how, and knowing whom competencies was actively discussed in the previous studies. This study seeks to identify the relationships among these competencies based on three ways of knowing, and their effects on perceived work performance. Furthermore, this study tried to identify the importance of each of these competencies in predicting perceived individual performance in the business workplace environment. The findings showed that the knowing why, knowing how, and knowing whom competencies all have a statistically significant positive influence on perceived individual work performance. Also, the study results showed the relative importance of the three competencies for perceived work performance. Specifically, the study results showed that the effects of the knowing why and knowing whom competencies are greater than the effect of the knowing how competency. The theoretical and practical implications of the study results were provided, including empirical evidence of the validity of the career capital model, the appropriateness of the career competency model based on the three ways of knowing, and assignment of resources for the acquisition of career competencies.

The study aims to define the career competency of HRD practitioners based on an intelligent career framework. This intelligent career framework has been described as having been achieved by the accumulation of career capital through the three ways of knowing, including knowing why, knowing how, and knowing with whom. The data were collected from the interviews with 15 HRD practitioners. Semi-structured interviews were used to collect data from the HRD practitioners. For the orientation about the interview, the researcher explained the importance of gathering data about the personal experiences of the respondents on their work and career. After that explanation, the researcher asked several questions based on the pre-structured interview guide. The data collected were qualitatively analyzed on the basis of the intelligent career framework. Based on the analysis of the interviews, the subcategories of each way of knowing competency were identified. For the knowing why, identity, credibility, and career clarity were identified. The subcategories of knowing how are remaining updates, hard skills, and soft skills, while the subcategories of knowing with whom are personal networking and professional networking. The interdependency among the three career competencies was found. The findings provide theoretical implications of applying an intelligent career framework.

Sustainable development is a key issue in the 21st Century and ecotourism is an alternative area of sustainable development. Ecotourism marketing is also a part of societal marketing which emphasizes social contributions. This study investigated the factors which affected ecotourist satisfaction and behavioral intentions. The sample for this study was composed of 212 ecotourists who visited the Upo area. This is one of the most well-known educational ecotourism sites in Korea and it has been registered at the Ramsar Convention for the conservation of wetlands since 1998. This study demonstrated that expectation factors did not significantly influence satisfaction. Second, the performance factors of physical attributes, eco-interpretation, eco-experience, and usability did significantly influence satisfaction. Third, the expectation factor of accessibility was significantly related to disconfirmation. Fourth, all performance factors significantly influenced disconfirmation. Fifth, it was found that disconfirmation significantly influenced satisfaction. Finally, satisfaction significantly influenced the intention to revisit and recommend the site to others. Managerial implications and future studies are discussed.

It has been believed that supplementation of human diets with soybean products markedly reduces human cancer mortality rates. Specifically the black colored soybean has been considered as having a medicinal effect since ancient times in Korea. Six genotypes of black colored soybean and a normal variety were investigated for their biological effect. While the isoflavone content of black colored soybean was higher than the normal soybean, saponin content of the seeds was not different among varieties. In the case of antioxidant activity, black colored soybean showed over 3 times increase in the active effect than the control variety. When feeding soybean extract, a general change of alcohol resolving effect, such as alcohol dehydrogenase activity, was observed in the blood and liver of rats.