• Educational Technology International
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• 제9권1호
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• pp.97-114
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• 2008

This research has three purposes: The first purpose is to verify whether SGRs(Student-Generated Rubrics) are effective for learner achievement in higher education or not. The second one is to analyze the agreements between an instructor's evaluations and peer group assessments with SGRs in real classroom situation. The final purpose is to propose the possibility of students' more objective self-evaluation with the use of SGRs. It appears that rubrics are effective tools to improve learner achievement in adult education and to promote the agreement between the instructor's and peer's evaluations, even though learners do not develop SGRs. In addition, this research has demonstrated that most students are not very accurate self-assessors, and they often overestimate themselves. This study can be helpful for novice instructors, especially for those who try to assess their students more fairly, to develop the SGRs as an evaluation tool appropriate for their own situation, and to give more reliable feedback to students.

• 아동학회지
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• 제32권4호
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• pp.135-146
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• 2011

The purpose of this study was to explore the relationship between young children's play characteristics, interactive peer play and Preschool children's behavior. The subjects of this consisted of 235 3- to 5-year-old children resident in Gyeonggi Province. Collected data were analyzed with SPSS statistical software. The results of this study were as follows : First, there was a significant relationship between play characteristics, interactive peer play and Preschool children's behavior. Second, in terms of the degree of play characteristics in evidence, interactive peer play appears to be a reliable predictor of young children's behavior.

• 한국IT서비스학회:학술대회논문집
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• 한국IT서비스학회 2008년도 추계학술대회
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• pp.157-160
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• 2008

The recent successes of systems like Google, Wikipedia and InnoCentive suggest that the time is now ripe for more such systems. Thus, we want to explore these systems and exploit them from a viewpoint of social psychology prior to technological progress. First of all, we examine the difference between 'wisdom of crowds' and 'crowd psychology'. There are two classes, which are for senior management major students. Conditions of two are same, except a class time. Forty five students in one class are tested for this experiment. They form a group with five people and are divided into 9 groups. In a case of a morning class, peer-to-peer evaluations are given to individuals in a class when a group presentation for a final project is given. On the other hand, in a case of afternoon class, peer-to-peer evaluations are given to each group in a class. The result is quite fruitful. The first is that an expert's evaluation for a project agrees with students, who are beginners in this field in the degree of more than 95%. However, in the case of afternoon class, students' group evaluation turns out to agree with an expert's one less than 53%. Morning class experiment result proves the truth of collective intelligence again. It tunrs out independent and confidential opinions are more cost effective and give right answers to questions than group opinions.

• 한국정보시스템학회지:정보시스템연구
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• 제32권3호
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• pp.133-150
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• 2023

Purpose This study aims to develop classification models using a decision tree algorithm to identify core keywords and rules influencing online consumer review evaluations for the robot vacuum cleaner on Amazon.com. The difference from previous studies is that we analyze core keywords that affect the evaluation results by dividing the subjects that evaluate online consumer reviews into self-evaluation (star ratings) and peer evaluation (helpfulness votes). We investigate whether the core keywords influencing star ratings and helpfulness votes vary across different products and whether there is a similarity in the core keywords related to star ratings or helpfulness votes across all products. Design/methodology/approach We used random under-sampling to balance the dataset. We progressively removed independent variables based on decreasing importance through backwards elimination to evaluate the classification model's performance. As a result, we identified classification models that best predict star ratings and helpfulness votes for each product's online consumer reviews. Findings We have identified that the core keywords influencing self-evaluation and peer evaluation vary across different products, and even for the same model or features, the core keywords are not consistent. Therefore, companies' producers and marketing managers need to analyze the core keywords of each product to highlight the advantages and prepare customized strategies that compensate for the shortcomings.

• 한국통신학회논문지
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• 제41권6호
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• pp.631-639
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• 2016

현재 Wi-Fi Alliance에서 발표한 Wi-Fi Peer-to-Peer Technical Specification (v1.4, 2014) 기술은 Wi-Fi Direct 접속을 위하여 개발되었으며, 최근 출시되는 대부분의 스마트폰과 TV, 모니터, 셋톱박스, 게임콘솔 등의 장치에서 상용화되고 있다. 하지만, 위 기술 표준에서 정의되는 초기 접속 절차는 5~10 초의 시간이 소모되며, 이는 해당 기술의 성능과 더불어 사용의 편의성 측면에서도 문제가 될 수 있다. 이러한 문제는 현재 표준 기술의 Scan 절차와 Find 절차로 구성된 초기 Discovery 절차의 비효율성으로 인하여 발생되며, 본 고는 이와 같은 문제를 해결하기 위하여 Wi-Fi Direct 절차를 구성하는 Scan 및 Find 절차를 재구성하여 Discovery 소요 시간을 단축시키고 접속 환경에 대한 효율을 향상시켰으며, 객관적 검증을 위하여 성능분석과 실험을 진행하였다.

• Journal of Preventive Medicine and Public Health
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• 제49권4호
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• pp.183-196
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• 2016

Objectives: There is no systematic review on economic evaluations of telemedicine in Japan, despite over 1000 trials implemented. Our systematic review aims to examine whether Japan's telemedicine is cost-saving or cost-effective, examine the methodological rigorousness of the economic evaluations, and discuss future studies needed to improve telemedicine's financial sustainability. Methods: We searched five databases, including two Japanese databases, to find peer-reviewed articles published between January 1, 2000 and December 31, 2014 in English and Japanese that performed economic evaluations of Japan's telemedicine programs. The methodological rigorousness of the economic analyses was assessed with a well-established checklist. We calculated the benefit-to-cost ratio (BCR) when a reviewed study reported related data but did not report the BCR. All cost values were adjusted to 2014 US dollars. Results: Among the 17 articles identified, six studies reported on settings connecting physicians for specialist consultations, and eleven studies on settings connecting healthcare providers and patients at home. There are three cost-benefit analyses and three cost-minimization analyses. The remaining studies measured the benefit of telemedicine only, using medical expenditure saved or users' willingness-to-pay. There was substantial diversity in the methodological rigorousness. Studies on teledermatology and teleradiology indicated a favorable level of economic efficiency. Studies on telehomecare gave mixed results. One cost-benefit analysis on telehomecare indicated a low economic efficiency, partly due to public subsidy rules, e.g., a too short budget period. Conclusions: Overall, telemedicine programs in Japan were indicated to have a favorable level of economic efficiency. However, the scarcity of the economic literature indicates the need for further rigorous economic evaluation studies.

• 아동학회지
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• 제34권2호
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• pp.83-99
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• 2013

The premise underpinning this research is that cognitive evaluation is the starting point of children's emotional experience. It then went on to investigate how parents' person-oriented guidance affects children's emotional intelligence. Additionally, children's ego-resilience was analyzed as a variable that affects children's emotional intelligence and as a mediator between parents' person-oriented guidance and children's emotional intelligence. A purposive sampling was conducted in 4 elementary schools in metropolitan areas and made use of 466 students in 4th and 5th grade as research subjects. The results are summarized as follows：firstly, the more frequently parents used person-oriented guidance, the more children exhibited higher levels of ego-resilience and emotional intelligence. Secondly, vitality, peer relations, optimism, curiosity, emotional regulation, maternal person-oriented guidance were found to affect emotional intelligence in the order of relative significance of that influence. Thirdly, children's ego-resilience was found to intermediate parents' person-oriented guidance and children's emotional intelligence. In conclusion, individual children's evaluations of parental verbal stimuli was found to influence children's emotional intelligence, especially more significantly through the mediation of children's ego-resilience.

• 한국통신학회논문지
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• 제39C권2호
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• pp.151-163
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• 2014

위치기반 서비스, 상황인지 서비스 등 다양한 응용 서비스들은 최근 개발되고 있는 웨어러블 디바이스와의 상호작용을 통해 착용자에게 다양한 서비스를 제공한다. 하지만 기존의 웨어러블 디바이스의 경우 서비스 사용을 위한 사용자의 의도적인 조작이 필요한 한계가 있어 단말 조작이 서툰 사용자들의 경우 서비스를 이용하는데 제약이 있다. 따라서 착용자가 누구든지 간에 응용 서비스를 이용할 수 있도록 사용자의 의도적인 설정과정 없이 이웃하는 단말들 간의 자율적인 통신이 필요하다. 본 논문에서는 블루투스 저에너지(BLE) 프로토콜 기반의 이동 단말의 실내 위치인지를 위한 B-LIDx 프로토콜과 이웃하는 단말들 간의 무설정 기회기반 직접 사물통신을 지원하는 B-PniP을 제안한다. 또한 실제 환경에서 이동 단말의 위치를 인지하는데 걸리는 시간과 B-PniP 서비스 사례별 서비스 소요 시간 측정을 통해 제안 프로토콜의 성능을 평가하였다.

• 패션비즈니스
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• 제21권6호
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• pp.31-46
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• 2017

This study views the people's propensity to rely on others' evaluations as the interpersonal trust online despite a lack of personal interactions. Therefore, this study explores the underlying dimensions of interpersonal trust and examines how interpersonal trust influences trust in the e-tailer and behavioral intent. Data of 395 adults who had purchased apparel goods online were collected nationwide using an online questionnaire. Exploratory and confirmative factor analysis identified five underlying constructs of interpersonal trust online such as peer identification, ability, integrity, shared lifegoals, and benevolence. A structural equation modeling test was conducted to examine the relationships between interpersonal trust, trust in the e-tailer, and behavioral intent. Interpersonal trust influenced on trust in the e-tailer, specifically on trust in the e-tailer's competence which subsequently increased a customer's behavioral intent such as attitude toward the e-tailer and shopping intention. Although no direct effect of interpersonal trust on the behavioral intent was found, interestingly, the effects of the interpersonal trust on the e-tailer trust which derived the behavioral intent to purchase. This result suggests that marketers devise a more effective system and environment that can encourage the interpersonal trust between customers to build a strong trust in e-tailers. It also provides a theoretical framework of online trust in the way of classifying interpersonal trust and trust in e-tailers.

• Earthquakes and Structures
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• 제16권4호
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• pp.487-499
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• 2019

Energy-based seismic design of structures has gradually become prominent in today's structural engineering investigations because of being more rational and reliable when it is compared to traditional force-based and displacement-based methods. Energy-based approaches have widely taken place in many previous studies and investigations and undoubtedly, they are going to play more important role in future seismic design codes, too. This paper aims to compute the maximum earthquake energy input to elastic single-degree-of-freedom (SDOF) systems for selected real ground motion records. A data set containing 100 real ground motion records which have the same site soil profiles has been selected from Pacific Earthquake Research (PEER) database. Response time history (RTH) analyses have been conducted for elastic SDOF systems having a constant damping ratio and natural periods of 0.1 s to 3.0 s. Totally 3000 RTH analyses have been performed and the maximum mass normalized earthquake input energy values for all records have been computed. Previous researchers' approaches have been compared to the results of RTH analyses and an approach which considers the pseudo-spectral velocity with Arias Intensity has been proposed. Graphs of the maximum earthquake input energy versus the maximum pseudo-spectral velocity have been obtained. The results show that there is a good agreement between the maximum input energy demands of RTH analysis and the other approaches and the maximum earthquake input energy is a relatively stable response parameter to be used for further seismic design and evaluations.