• 한국IT서비스학회지
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• 제14권1호
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• pp.115-128
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• 2015

As the life expectancy of human beings gets longer and our society changes into highly competitive arena, the implementation of online adult learning is growing, and therefore the learners in self-regulated scaffolding learning environments is becoming an important topic. This study is to investigate the main effects of scaffolding and self-regulation and the interaction effect on discussion participation and comprehension in online learning environments. To do this, ninety-nine adults taking online learning courses with the open university in Korea were investigated. Adult learners were divided into one of the four groups (no scaffolding, conceptual, strategic, and conceptual and strategic scaffoldings). Regarding self-regulation, learners were divided into two groups (low and high self-regulated) based on the mean score of subjective report of self-regulated learning. The results are as follows : First, 'strategic scaffolding' is more effective than 'conceptual scaffolding' in discussion participation (F=2.772, p < .05) and comprehension test (F=7.156, p < .05). Second, high self-regulated learners more actively participate than low self-regulated learners in discussion (F=6.230, p < .05), and achieve higher scores (F=4.863, p < .05). Third, there is no interaction effect between scaffolding strategies and the level of self-regulation. The theoretical and practical implications of these findings are discussed.

• Journal of Korean Neurosurgical Society
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• 제57권2호
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• pp.100-107
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• 2015

Objective : To report a minimally invasive treatment option using percutaneous pedicle screw fixation with adjuvant treatment for metastatic thoraco-lumbar and lumbar spinal tumors. Methods : This is a retrospective study of charts of patients with spinal metastases. All were older than 18 years of age and were considered to have more than 3 months of life expectancy. The patients had single or two level lesions, and compression fracture or impending fracture. Exclusion criterion was metastasis showing severe epidural compression with definite neurological symptoms. Usually spinal segments from one level above to below pathology were stabilized. Visual analog scale (VAS) score for pain assessment and Frankel scale for neurological deficit were used, while pre- and post-operative performance status was evaluated using the Eastern Cooperative Oncology Group (ECOG). Results : Twelve patients (nine men, three women; median age 54.29 years) underwent surgery. All patients presented with back pain with/without radicular pain. There were no early complications and perioperative mortalities. Following surgery, a significant difference between average pre- and post-operative VAS scores was found (p=0.003). Overall, 91.8% of patients (11/12) experienced improvement in their ECOG score post-operatively. The mean ambulation time was 196.9 days [95% confidence interval (CI), 86.2-307.6 days; median, 97 days]. During follow-up, nine patients died and the mean overall survival time in enrolled twelve patients was 249.9 days (95% CI, 145.3-354.4 days; median, 176 days). Conclusion : Minimally invasive treatment using percutaneous pedicle screw fixation with adjuvant treatment is a good alternative treatment option for potential instability of the thoraco-lumbar and lumbar spinal metastasis.

• Asian Pacific Journal of Cancer Prevention
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• 제16권9호
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• pp.3923-3926
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• 2015

Background: Lung cancer is a fatal malignancy with high mortality and short survival time. The aim of this study was to estimate survival rates of Iranian patients with lung cancer and its associate predictive factors. Materials and Methods: The study was conducted on 355 patients admitted to hospitals of West Azerbaijan in the year 2007. The patients were followed up by phone calls until the end of June 2014. The survival rate was estimated using the Kaplan-Meier method and log-rank test for comparison. The Cox's proportional hazard model was used to investigate the effect of various variables on patient survival time, including age, sex, Eastern Cooperative Oncology Group (ECOG) performance, smoking status, tumor type, tumor stage, treatment, metastasis, and blood hemoglobin concentration. Results: Of the 355 patients under study, 240 died and 115 were censored. The mean and median survival time of patients was 13 and 4.8 months, respectively. According to the results of Kaplan-Meier method, 1, 2, and 3 years survival rates were 39%, 18%, and 0.07%, respectively. Based on Cox regression analysis, the risk of death was associated with ECOG group V (1.83, 95% CI: 1 Conclusions: The survival time of the patients with lung cancer is very short. While early diagnosis may improve the life expectancy effective treatment is not available.

• 한국건축시공학회지
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• 제11권6호
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• pp.627-633
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• 2011

철근 콘크리트 구조물의 염해 내구수명 산정을 위해서는 비래염분량 평가가 필수적이다. 현재까지 국내에서도 국외에서 개발된 포집기를 주로 사용해 왔으나 포집기 자체의 결함으로 포집 정확도에 문제가 있다는 지적이 일어왔었다. 본 연구 결과 기존의 포집기는 후풍의 영향을 배제할 수 없어 실제 포집기를 통과하면서 거즈에 부착된 비래염분은 후풍의 영향에 의해 이탈되어 포집량이 낮게 평가됨과 동시에 방향성, 즉 남쪽에서 불어오는 비래염분도 북향하고 있는 포집기에 포집되어 방향에 대한 구분이 없어지는 현상을 해석적, 실험적으로 규명하고, 문제해결형 개량형 포집기를 개발하였다. 또 해안지역에서 실측에 사용하여 높이별 비래염분량 측정과 동시에 포집기의 성능검증을 실시하였다.

• 디지털융복합연구
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• 제18권8호
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• pp.151-167
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• 2020

본 연구는 농업드론 서비스의 사용의도에 미치는 영향 요인들을 살펴보고자 하였다. 농업 관련 종사인 324명의 설문결과를 SPSS v22.0 및 PROCESS macro v3.4를 사용하여 분석하였다. 통합기술수용이론에 의한 기술수용요인이 농업드론 서비스의 사용의도에 미치는 영향과 인지된 혜택의 매개효과를 분석하였다. 분석결과, 첫째, 기술수용요인은 인지된 혜택과 농업드론 서비스 사용의도에 정(+)의 영향을 미치는 것으로 나타났다. 둘째, 경제적 혜택은 성과기대를 제외한, 편의적 혜택은 사회적 영향을 제외한 기술수용요인과 농업드론 서비스 사용의도 간을 매개하는 것으로 나타났으나 실용적 혜택은 유의한 매개효과가 나타나지 않았다. 향후 농업 또는 드론 교육을 받은 사람이나 드론 자격소지자를 대상으로 추가 연구가 필요하다고 본다.

• 대한안전경영과학회지
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• 제12권3호
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• pp.121-128
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• 2010

This is to show some basic data for introducing both circulated aggregate and recycled powder producing waste concrete. Standard-mixing design for 24MPa has been basically used and added and replaced normal aggregate with recycled powder made of waste concrete. In addition, polycarboxylate high-range water reducing agent has been used because recycled powder is missing adhesive strength and it is not compare with cement's adhesive strength. Compressive strength with powder mixture of 2%, 4%, 6%, 8%, and 10% has been decreased down to 80% of normal concrete material strength without recycled powder mixture. $200^{\circ}C$, $400^{\circ}C$ and $600^{\circ}C$ heated concrete were compressively tested in order to find out concrete strength resistant to high temperature. heat capacity was also tested, based on the expectancy of its low conductivity. In addition, thermal conduction test was tested in order to find out concrete insulation. According to this test, when concrete was tested by fire resistance, it using the circulation aggregate was same resulted by concrete using the natural aggregate. also, recycle powder was not effecting insulation performance. but it is fit to standard on concrete insulation of building law.

• Journal of Information Science Theory and Practice
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• 제4권4호
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• pp.49-63
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• 2016

The emergence of the World Wide Web (WWW) has changed the scholarly publishing system. Today, Open Access (OA) scholarly publishing offers free access and wide dissemination for research findings anytime and anywhere as an additional value for scholarly content. Despite the potentials of OA publishing, its adoption and use is still low.This paper determines factors influencing the adoption and use of OA publishing by academic staff in universities in Nigeria using an adapted Unified Theory of Acceptance and Use Technology (UTAUT). The study applies methodological triangulation by combining quantitative and qualitative approaches. The empirical data were collected from 317 academic staff in universities in southwest Nigeria. The questionnaire forms were analyzed using the Statistical Package for Social Sciences (IBM-SPSS) 19.0 version to generate descriptive statistics, Analysis of Variance, and Hierarchical Multiple Regression. Thematically, analysis also applies to the interviews. The results show that awareness, attitude, performance expectancy, Internet self-efficacy, and facilitating conditions significantly influenced the adoption and use of OA publishing. The study also reveals that due to lack of OA policy, most of the respondents did not know about OA. The findings further establish that all predictors and moderating variables jointly contributed 64.4% total variance towards the adoption and use of OA publishing. One of the implications of this study is that there is a need for adequate facilities to support adoption and use of OA publishing. The findings inform the proposed framework for improving and evaluating the adoption and use of OA publishing. The findings also have theoretical, societal, and methodological significance to all stakeholders.

• 기술혁신연구
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• 제7권1호
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• pp.151-175
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• 1999

This study develops principles for determining and managing costs applicable to grants and cooperative agreements for basic research. We investigated financial management policies of funding agencies and foundations in the United States, United Kingdom, Canada, Germany, Japan and Korea. Also we surveyed opinions of researchers and research fund administrators in Korean universities. Based on our review of funding agencies and our survey, the recommended management policies for grants and cooperative agreements are as follows: (1) Cost Structure. Cost of a sponsored agreement is comprised of the allowable direct costs and allocable portion of the allowable indirect costs. Direct costs can be further divided into salaries and wages, equipment, and other direct costs. (2) Salaries and Wages. Salaries and wages applied to a grant are paid for services rendered to the project during the period of performance of the particular agreement. In order to give researchers financial incentive, researcher allowance can be paid up to 30% of his/her regular salary. (3) Equipment. Any property purchased with grants which has an acquisition cost of 5,000,000 won or more per item and a normal life expectancy of two years or more is defined as equipment. Expenditures for special purpose equipment are allowable provided the acquisition of items is necessary for the research supported by the grant. (4) Other Direct Costs. Other direct costs are comprised of travel (both domestic and foreign), materials, other costs. Other costs may not exceed 30% of total other direct costs. (5) Indirect Costs. Since there is no clear consensus on indirect costs and additional budget is necessary to support actual indirect costs, the practical policy at the moment is to give a research support expense in lieu of indirect costs. In the future, however, some form of actual indirect costs should be supported. This study develops principles for determining and managing costs applicable to grants and cooperative agreements funded by the Ministry of Science and Technology. This research can be applied to other governmental agencies to give consistency and uniformity in administration of grants and cooperative agreements.

• 한국게임학회 논문지
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• 제21권3호
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• pp.67-78
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• 2021

본 논문은 게임 플레이어들의 공익성 게임에 대한 참여 유발과 공익성 게임에 대한 인식 및 참여 동기에 대한 연구이다. 본 연구의 연구 대상은 중국 대륙에서 공익성 게임의 테스트로 참여했던 게임 유저들로 총 300명의 설문지를 배부했으며, 데이터 처리는 SPSS 24.0과 AMOS 24.0을 적용해 분석하여 신뢰성 분석, 유효성 분석, 상관분석, 구조 방정식 모델 검증 등을 진행하였다. 가설 검증결과에 따라 공익성 게임에서 신뢰 감지는 유저의 공익성 게임에 영향을 미치는 가장 중요한 동기 부여 요소였다. 성과 기대에서 가장 주요한 영향 요인은 자아실현에 대한 욕구와 소외계층에 대한 관심이었다. 인지된 위험과 사회적 영향은 유저의 공익성 게임 행위에 영향을 미치는 동기 요인이었다. 위험 감지는 유저의 참여 의도에 분명한 반(-)향 영향을 미쳤다.

• 디지털융복합연구
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• 제17권2호
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• pp.127-134
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• 2019

본 연구에서는 관광객을 대상으로 스마트폰 모바일뱅킹 서비스에 대한 행동 의도에 미치는 영향 요인들을 탐색하고자 한다. 모바일 인터넷 기술의 발전과 스마트 폰의 보급으로 인해 스마트폰 기반의 모바일뱅킹에 대한 관심과 보급이 대중화되고 있다. 이러한 상황에서 본 연구에서는 독립변수로서 기대 성과, 사회적 영향, 촉진 조건, 인지된 재정적 비용, 습관, 인지된 보안 수준을, 그리고 종속변수로서 사용자의 이용행동의도 사이의 관계를 분석하였다. 본 연구에서는 제주국제공항에서 중국 관광객을 대상으로 203명의 응답자를 대상으로 분석을 실시하였고, Smartpls 3.0으로 독립변수들의 영향 정도를 파악하였다. 분석 결과 인지된 보안 수준 및 습관이 행동 의도에 긍정적인 영향을 미침을 알 수 있었다. 특히 인지된 보안을 최근에 스마트폰 기반 모바일뱅킹의 중요한 이슈라는 점에서 본 연구 결과에 부합된다. 본 연구는 관광객 대상으로 스마트폰 기반 모바일 뱅킹 서비스의 행위 요인에 대한 분석이라는 점에서 의의를 가진다.