• Journal of Electrochemical Science and Technology
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• 제10권3호
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• pp.329-334
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• 2019

Sn-Cu alloy powders were prepared via a simple chemical reduction method for the negative electrode materials in lithiumion batteries. The addition of Cu can suppress the growth of Sn particles during synthetic process. Furthermore, the Cu also acts as a matrix phase against the volume change during cycling. With increasing amount of the Cu, a stable $Cu_6Sn_5$ phase formed in the Sn-Cu alloy and its cycle performance greatly enhanced depending on the Cu content. To promote the generation of the $Cu_6Sn_5$ phase, the synthesis temperature is raised to $60-100^{\circ}C$ from the ambient temperature. The Sn-Cu alloy powders prepared at elevated temperatures showed remarkable cycle performances. The Sn-Cu alloy powder obtained at $60^{\circ}C$ exhibited a significantly high volumetric capacity of over 2,000 mAh/cc at the 50th cycle.

• 한국정보통신학회논문지
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• 제12권7호
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• pp.1308-1313
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• 2008

무선 애드혹 네트워크에서 동작하는 많은 프로토콜들은 이웃 노드에 대한 정보를 중요하게 사용한다. 이웃 노드에 대한 정보는 Hello 메시지를 주고받음으로써 알 수 있다. 자신기 존재를 알리고 싶은 노드는 주기적으로 Hello 패킷을 전송한다. 하지만, 이러한 Hello 패킷의 전송은 무선 애드혹 네트워크에 큰 제어 부하로 작용하게 된다. 이 논문에서는 Hello 패킷뿐만 아니라 방송 패킷을 활용하여 이웃 노드 정보를 주고받는 방법을 고찰한다. 분석과 컴퓨터 시뮬레이션을 통하여 방송 패킷을 활용하는 기법이 Hello 패킷만을 사용하는 방식에 비하여 상당한 효과를 보인다는 것을 분석한다. Hello 패킷의 전송 주기와 방송 패킷의 전송기가 같다면 42% 정도의 부하 절감 효과가 있다.

• 대한물리의학회지
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• 제7권4호
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• pp.401-409
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• 2012

PURPOSE: The purpose of this study is to assess the difference in the effect of provision of feedback on knowledge of performance and knowledge of result in the training using somesthetic video game aimed at enhancement of balance of hemiparalysis patients due to stroke. METHODS: 20 stroke patients participated in the study. The participants were randomly divided into 2 groups, namely, the knowledge of performance feedback group (KP group, n=10) and the knowledge of result feedback group (KR group, n=10). Both groups received somesthetic video game training 5 times (30 minutes each) a week for total of 4 weeks. The KP group received feedback on the patterns of movement in execution of somesthetic video game. The KR group received feedback on the scores acquired following execution of somesthetic video game. Verification of the significance of the data was performed through paired t-test and independent t-test. RESULTS: Both groups displayed significant reduction in the movement of center of pressure (COP) and Timed up and Go (TUG), and significant increase in the Berg Balance Scale (BBS) following the training. Although the movement of COP was reduced for the KP group in comparison to the KR group, it was not statistically significant, and there was significant reduction in TUG and significant increase in BBS. CONCLUSION: The above results illustrate that provision of feedback on knowledge of performance is more effective than feedback on knowledge of result in somesthetic video game training for the purpose of enhancement of balance in stroke patients. Therefore, provision of feedback on knowledge of performance is necessary in somesthetic video game training for stroke patients.

• International Journal of Quality Innovation
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• 제8권2호
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• pp.69-87
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• 2007

High-tech industries in Taiwan exist in an environment with diverse product requirements and intense cost reduction and information integration stress. They must develop new operational directions to increase industry competitiveness. Therefore, Taiwan's high-tech industries must continue R&D and creativity, establish knowledge sharing mechanisms and improve new product development (NPD) performance. This research analyzed and explored the influences of knowledge management (KM) and knowledge sharing mechanisms introduced by Taiwan's high-tech industries on new product development performance. The relationship between knowledge management capabilities and NPD performance is studied. This research considers the intervening industry and corporate position variables. Taiwan's high-tech industries have gradually entered the era of IT region integration and application with competitive advantage creation based upon core techniques. The in-depth study of knowledge management and knowledge sharing introduced by the high-tech industry revealed double meanings in academic and practical applications. The research results showed the following: (1) the stronger the knowledge management capabilities of Taiwan's high-tech industries, the more significant the NPD performance. (2) The better the knowledge sharing mechanism in Taiwan's high-tech industries, the more significant the NPD performance. (3) Corporate scale is not necessarily the critical factor in NPD success and the influence of corporate scale on NPD performance did not show significant differences. (4) The stronger the degree of leading corporate techniques, the more significant the NPD performance.

• Journal of Nutrition and Health
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• 제50권5호
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• pp.472-482
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• 2017

본 연구는 광주광역시와 전라남도에 거주하는 건강한 성인 남성 200명을 대상으로 나트륨 저감화 행동변화단계에 따른 식행동 특성 및 영양교육의 효과를 분석하였으며 주요 결과는 다음과 같았다. 행동 유지단계 대상자의 연령은 고려전단계와 고려 준비단계 대상자에 비해 유의적으로 높았다. 운동과 외식의 빈도 및 짠 음식의 선호도에서 행동변화단계에 따른 유의한 차이가 있었다. 고나트륨 함유 식품의 섭취빈도는 우동, 라면 등 국물음식과 순대의 섭취에서 나트륨 저감화 행동변화 변화단계에 따른 유의적 차이가 있었다. 식행동 점수는 행동 유지 대상자가 고려전, 고려 준비 대상자에 비해 유의하게 높았으며, 나트륨 저감화 영양교육에 의해 고려전단계와 고려 준비단계의 식행동의 점수가 유의적으로 개선되었다. 섭취빈도 관련 식행동 점수에서 행동 유지 대상자는 고려전, 고려 준비 대상자에 비해 유의적으로 높았으나 영양교육에 의한 개선 효과는 없었다. 전체 대상자의 나트륨 관련 영양 지식은 나트륨 저감화 영양 교육 후 정답률이 모든 행동단계 대상자에서 유의적으로 향상되었으며, 대상자들의 행동단계가 고려전단계는 큰 폭으로 감소하고, 행동 유지단계는 증가하였다. 이상의 연구 결과를 종합해 보면 나트륨 저감화를 실천하는 대상자들에 비해 고려전, 고려 준비단계 대상자들은 식행동 및 영양지식이 바람직하지 않은 성향이었으나 나트륨 저감화 영양교육에 의해 식행동과 영양지식이 개선되었다. 본 연구는 단 1회의 나트륨 저감화 단기 교육에 의한 평가로, 그 결과를 일반화하기에 제한점이 있다. 따라서 나트륨 저감화 행동변화단계에 따른 영양교육의 효과를 다양하게 분석하기 위한 추후 연구가 필요할 것이다.

• 대한지역사회영양학회지
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• 제18권6호
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• pp.626-643
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• 2013

This study was performed to evaluate the differences in blood pressure, sodium intake and dietary behavior changes according to the extent of session attendance on sodium reduction education program for pre-hypertensive adults in a public health center. Sodium reduction education program consisted of 8 sessions for 8 weeks. Fifty three patients who completed the pre and post nutritional assessments were classified into 2 groups according to the session attendance rate. Nineteen participants who attended the education program 3 times or less (${\leq}3$) were categorized into the less attendance (LA) group and 34 participants attended 4 times or more (${\geq}4$) into the more attendance (MA) group. Blood pressure, anthropometric measurements, serum lipid profile, nutrient intakes including sodium, nutrition knowledge and dietary behavior score were assessed before and after the nutrition education program. Mean sodium intakes (p<0.001), systolic/diastolic blood pressure (p<0.001), and weight (p<0.001) were significantly decreased in the MA group after sodium reduction education program. Compared to the MA group, mean sodium intakes, systolic/diastolic blood pressure were not significantly changed after the education program even with significantly increased nutrition knowledge (p<0.05) and dietary behavior score (p<0.01) in the LA group. It appears that pre-hypertensive adults need to attend the sodium reduction education program for at least 4 times or more to gain beneficial effects from the intervention. Positive feedback of healthcare team or offering more cooking classes may be needed to raise the attendance rate in the sodium reduction education program.

• Child Health Nursing Research
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• 제15권2호
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• pp.171-181
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• 2009

Purpose: Fever is a common problem in children. Misconceptions about fever are exacerbated by variations in knowledge and practice of pediatric nurses. The purposes of this study were to identify the knowledge and attitude toward fever and its management and to identify the relationship between knowledge and attitude. Methods: A descriptive correlation study was conducted with 114 pediatric nurses in G city. Self-administered questionnaire was used for data collection. Data were analyzed using descriptive statistics, t-test or ANOVA and Pearson correlation analysis. Results: The mean percent of correct responses for physiology of fever, fever management and antipyretics was 51.3%. Knowledge of antipyretics was lower than knowledge of other items with 29.2% correct. Both positive and negative attitudes were discovered. Pediatric nurses' in this study reported negative attitudes toward beneficial effects of fever and positive attitudes toward use of antipyretics to prevent febrile convulsions and reduction of temperatures as low as $38.3^{\circ}C$. There was no statistically significant correlation between knowledge and attitude related to fever management. Conclusion: The findings suggest that improvements are needed in management practices of pediatric nurses. Educational interventions to increase knowledge of fever management by pediatric nurses and to strengthen positive attitudes about childhood fever are recommended.

• 지식경영연구
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• 제2권1호
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• pp.83-94
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• 2001

It is a challenging task to introduce and apply a theoretical concept like KM (Knowledge Management) to the corporate management by formulating such notion into a computer-based system. Apart from that, a company who suffers financially will be very much reluctant to employ KM, a solution that will not make an immediate impact on profit generation. Nonetheless, the perception of life-long workplace is being replaced by that of life-long career in today's society, and consequently it has become a key importance for the management to minimizing the Joss of valuable knowledge that results from frequent shift of manpower. Furthermore, knowledge is now regarded as a key to corporate competitiveness as its value has become a more important factor than that of physical resource in estimating a company's value. It is therefore necessary to transform such implicit knowledge that one possesses in his/her mind to a formation so that a company can achieve the ultimate goal of implementing KM: increase of profit and cost reduction. The objective of this research is to look into the case examples of the way in which Samsung Electronics implemented KM and help set the direction for those companies who consider employing KM into their corporate system.

• 기본간호학회지
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• 제21권2호
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• pp.174-182
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• 2014

Purpose: This study was done to investigate the probability of stroke, knowledge of stroke, and health-promoting lifestyle among stroke risk groups. Method: A descriptive correlational design was used. Data for 110 patients were analyzed. The probability of stroke was calculated using the Stroke Risk Profile from the Framingham Heart Study (2013), knowledge of stroke was measured using a questionnaire developed by Yoon et al. (2001), and health-promoting lifestyle was measured using the HPLP-II, developed by Walker et al. (1995). Results: The average probability of stroke was 11.74, knowledge of stroke, 67.88, and health-promoting lifestyle, 2.27. Probability of stroke showed significant differences according to gender. Knowledge differed according to patients' salaries. Health-promoting lifestyle showed significant differences according to gender. There were no significant correlations between probability of stroke and knowledge of stroke or probability of stroke and health-promoting lifestyle, but there was a significant correlation between knowledge of stroke and health-promoting lifestyle. Conclusion: Results indicate the necessity of active education to increase knowledge related to stroke which will contribute to an increase in health-promoting behaviors and make primary prevention a reality in the reduction of risk of stroke among stroke risk groups.

• 지식경영연구
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• 제11권4호
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• pp.41-66
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• 2010

This research examines the effect of the relatedness and the gap between Resources and mechanisms on effectiveness of inter-organizational knowledge transfer. According to the literature, there has been a competing theory between two claims; one is that inter-organizational knowledge transfer will be more effective due to the reduction of the transaction cost as the relatedness increases. And the other is that the mutual complementarity of different organizational characteristics will increase synergy. In total, the relatedness and the gap of the Resource and mechanism makes the inverted U-shaped relationship with the inter-organizational knowledge transfer. As the result of empirical analysis about 109 Korean-based Joint Ventures entered country, it shows that the relatedness of parent company's production Resources, learning mechanisms, and coordination mechanisms made the inverted U-shaped relations with the inter-organizational knowledge transfer and the gap of production Resources and adjustment mechanism formed the same relationship. However, the U-shaped relationship has been established in the relatedness of market Resources, but the gap of market Resources and the learning mechanism was not statistically significant. Through this study, I can draw a best conclusion that the inter-organizational knowledge transfer will be more effective when the relatedness and the gap of management resources and mechanisms is in optimal level. However, when it comes to market Resources, it can be inferred that the result could be the opposite because the partner country's market environment would be different.