• 농촌지도와개발
• /
• 제18권1호
• /
• pp.101-128
• /
• 2011

The purpose of this study is to find out the effectiveness of instructional method using by a motion picture at cognitive and affective learning domain, and students' preferences for instructional methods in middle school career education. The nonequivalent control group pretest-posttest research design was applied to an experimental group and to a control group. A pair of 75students from four classes participated in an experiment. The results show higher learning achievements both of cognitive and affective domains in experimental group than in control group. Higher students' preferences for instructional methods were found in experimental group than in control group. It is concluded that a motion picture could give a more concrete experience and a more pleasure to students than traditional lecture. Higher learning achievements in cognitive and affective learning domain of career education and higher preferences were came out in consequence of using a motion picture.

• 성인간호학회지
• /
• 제20권4호
• /
• pp.548-560
• /
• 2008

Purpose: This study was conducted to develop a simulation-based education course and to evaluate the results after the application for second year nursing students. Methods: This study was a non-equivalent control pre-post design. Based on the clinical situation scenarios about patients with COPD and MI, a total of two simulation-based learning modules was developed. Pretest and posttest was conducted to evaluate the difference in critical thinking disposition, problem solving, and clinical competence between two groups of 102 students for the experimental group, 2007 and 90 students for the control group, 2006. The experimental group conducted a clinical performance evaluation in the final test, on December 10, 2007. Results: In the experimental group, knowledge related to learning objectives was significantly increased and core intervention was performed almost exactly, but the same result was not observed in domains of analysis of laboratory test, and nursing education for patients. Self-evaluated clinical competence and problem solving level were significantly more improved in the experimental group than control group, but critical thinking disposition level wasn't. Conclusion: In conclusion, a simulation-based education course needs to utilize self-directed learning module like computer-based learning through web contents and MicroSim and video productions for improving nursing students' critical thinking.

• 한국융합학회논문지
• /
• 제6권6호
• /
• pp.81-86
• /
• 2015

u-헬스케어에서는 무선 센서와 에드혹 네트워크를 통해 사용자의 건강 정보, 응급 정보를 수집, 분석하고 있으며 상호 운용이 가능한 전자 헬스 정보의 기록 및 전송을 위하여 동적인 액세스 제어를 수행하고 있다. 네트워크 시스템을 이용한 u-헬스케어의 경우 상호 운용 가능한 전자 건강 기록과 민감한 환자 의료 정보 전송은 개인 정보 보호 및 보안에 대한 문제점을 해결하기 위하여 키 관리 체계를 사용하고 있으나 동적인 액세스 제어에서는 그룹 키 관리가 어려우며 그룹에서 접근 맴버를 추가하거나 삭제할 경우에 매번 그룹 키를 변경해야하는 문제점을 가지고 있다. 따라서 본 논문에서는 유비쿼터스 헬스 케어의 동적 액세스를 수행하는 네트워크 환경에서 헬스 정보 교환을 위한 융합형 키 관리 체계방식을 제안한다.

• Spatial Information Research
• /
• 제20권6호
• /
• pp.99-107
• /
• 2012

최근 건설데이터를 활용하는 BIM과 공간데이터를 활용하는 GIS 간의 통합 및 연계를 시도하려는 연구가 많이 이루어지고 있다. 하지만, BIM과 GIS의 데이터모델이 서로 너무 다른 특징을 가지고 있어 두 데이터모델 간의 통합을 통한 상호운용은 매우 어려운 실정이다. 따라서 본 연구에서는 BIM과 GIS의 효율적인 상호운용성을 시스템적으로 확보하기 위한 BIM과 GIS 상호운용 플랫폼을 설계하여 제시한다. 그리고 기존의 상용 소프트웨어들을 분석하여 본 연구에서 제안한 플랫폼에 필요한 요소기술과 기능들을 정의하여 제시한다.

• 한국지역사회생활과학회지
• /
• 제26권4호
• /
• pp.749-760
• /
• 2015

This study establishes a safe and healthy farm certification system for Korean farmers and presents the certification system and assessment items. Existing certification systems for safety and health were compared through a review of local and international studies as well as an examination of advanced examples. Then the certification system and assessment items were objectively verified through an expert evaluation process. As a result, four domains of certification participation, implementation, certification evaluation, and post management were identified as components of the certification system. For assessment measures, 6 categories, 21 factors, and 96 items were derived. The results are expected to be used as basic data in establishing a foundation for the implementation and operation of a certification system appropriate for distinct characteristics of the Korean agricultural sector.

• Wind and Structures
• /
• 제11권6호
• /
• pp.455-478
• /
• 2008

The present study aims to estimate the wind ventilation performance for pedestrian level domains from the air quality point of view. Three typical models of a dense urban area were considered and numerically simulated in order to examine the effects of the geometry of such models on wind flow characteristics, which in turn affect the air quality, within the pedestrian domain of a street canyon located within this area. The calculated flow fields were employed to estimate the exceedance probabilities within the study domain using a new approach: air exchange rate within the domain. The study has been applied to nine cities in Japan: Tokyo, Osaka, Sapporo, Niigata, Fukuoka, Nagoya, Sendai, Yokohama, and Kyoto, based on their mean wind velocity data. The results demonstrated that the exceedance probability analysis of the pedestrian wind environment could be a valuable tool during the design stage of inhabited areas for the evaluation of pollutant-removal efficiency by the applied wind. Also, the calculated probabilities demonstrated substantial dependence on both the geometry of building arrays and the wind conditions of the nine cities.

• 정보처리학회논문지C
• /
• 제11C권3호
• /
• pp.309-318
• /
• 2004

Mobile IP에서 이동노드와 서버간의 안전한 통신을 제공하고 급증하는 사용자 인증 서비스 요구를 만족시키기 위해 AAAv6기반 다이어미터(Diameter) 기술이 사용자 인증에 사용되고 있다. 따라서 이 논문에서는 사용자 인증기능 수행을 위한 서버들의 최적 성능 지표를 구하고자 도메인간의 이동성을 가지는 AAAv6 인증 모델중의 하나인 EAF-TLS기반의 서버 성능 평가 모델을 설계한다. 그리고 DSA/RSA암호 알고리즘을 이용하여 사용자 인증 기능을 수행하는 각 서버의 최적 성능지표를 도출하여 AAAv6의 운영을 최적화 시킬 수 있는 환경을 제시한다.

• 종양간호연구
• /
• 제12권1호
• /
• pp.1-11
• /
• 2012

Purpose: This study reviewed articles related to breast cancer, cognitive function and chemotherapy available in 4 databases. Methods: The researcher reviewed 32 pieces of literature that were published between January 2001 and November 2011. Results: Within the last decade, several studies have investigated whether adjuvant treatment of breast cancer affects cognitive function. A number of prospective studies have reported inconsistent results regarding whether chemotherapy affects cognitive function. Approximately half of the studies reported subtle cognitive decline in a wide range of domains among some breast cancer patients following chemotherapy, and others did not. Conclusion: Breast cancer patients receiving adjuvant chemotherapy showed the most deterioration and the most persistent decline in cognitive function. Since cognitive impairment is subtle, if evident at all, discrepant findings are due to hormonal, physiological, psychological or temporal confounding variables and differences in study design. Especially, that chemotherapy may impair memory, executive function, attention and visuospatial function in women with breast cancer.

• 디지털산업정보학회논문지
• /
• 제12권1호
• /
• pp.81-87
• /
• 2016

Cloud computing technologies are utilized and merged in various domains. Cloud computing technology-based personal cloud service technologies provide mobility and free access by using user centered storages and smart devices such like smart phones and table PCs. Therefore, we should overcome limits on the storage by solving the capacity problems of devices to provide security services in the personal cloud environments It can be addressable to provide the convenience of various security technologies. However, there are some security threats inherited from existing cloud environments and the possibilities of information leakage when devices are lost or stolen. Therefore, we designed a framework for providing secure cloud services by adding objects, such as user authorization, access tokens, set permissions by key generation, and key management assignments, for user management in personal cloud environments. We analyzed the stability of the proposed framework in terms of irreverent use and abuse, access to insiders, and data loss or leakage. And we evaluated the proposed framework in terms of the security with access control requirements in personal cloud environments.

• 한국진공학회:학술대회논문집
• /
• 한국진공학회 2011년도 제41회 하계 정기 학술대회 초록집
• /
• pp.205-205
• /
• 2011

The self-assembly of ${\gamma}$-phenylalanine on Au(111) at 150 K was investigated using scanning tunneling microscopy (STM). Phenylalanine can potentially form two-dimensional (2D) molecular networks through hydrogen bonding (through the carboxyl and amino groups) and ${\pi}-{\pi}$ stacking interactions (via aromatic rings). We found that ${\gamma}$-phenylalanine molecules self-assembled on Au(111) surfaces into well-ordered structures such as ring-shaped clusters (at low and intermediate coverages) and 2D molecular domains (intermediate and monolayer coverages), whereas ${\alpha}$-phenylalanine molecules formed less-ordered structure on Au(111). The self-assembly of ${\gamma}$- but not ${\alpha}$-phenylalanine may be related to the flexibility of the carboxyl and amino groups in the molecule. Moreover, as expected, the 2D molecular network of ${\gamma}$-phenylalanine on Au(111) was mediated by a combination of hydrogen bonding and ${\pi}-{\pi}$ stacking interactions.