• 정보교육학회논문지
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• 제26권2호
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• pp.85-95
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• 2022

본 연구는 COVID-19 팬데믹 상황에서 LMS로써 MS Teams를 도입하여 온라인 강의를 진행하는 과정에서 나타난 예비교사의 학습행태와 학업성취도 간의 관계를 살펴보고자 하였다. MS Teams와 연동된 MS Insights가 제공하는 MS Teams 방문일수, 과제 제출 기한 엄수, 소통에 대한 변인을 중심으로 수강성적과의 상관관계 및 매개효과를 알아보았다. 학습행태 변인과 학업성취도 간 피어슨 상관관계 분석의 결과, 예비교사의 학업성취도는 MS Teams 방문 일수 및 온라인 과제 제출 기한의 엄수와 유의한 정적 상관관계를 보였다. MS Teams내 질문, 게시글, 답변 작성 빈도와 학업성취도 간의 관련성은 유의한 상관이 없었다. MS Teams의 학습행태 변인들이 학업성취도에 미치는 영향에 대한 다중회귀분석 결과, 과제 제출 기한의 관리 변인에 있어서 학업성취도를 설명할 수 있었다.

• 한국콘텐츠학회논문지
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• 제22권7호
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• pp.30-45
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• 2022

본 연구에서는 텍스트마이닝을 활용해 한국과 미국의 온라인 뉴스와 포럼에서 산업수학과 관련한 이슈를 파악하고, 그 결과를 비교 분석하였다. 이를 위해 한국의 주요 포털 사이트인 네이버의 뉴스 기사, 클리앙의 게시글과 댓글, 그리고 미국의 New York Times와 CNN의 뉴스 기사, Reddit의 게시글과 댓글에서 산업수학과 관련한 텍스트 데이터를 수집하여 구조적 토픽모델링 분석을 수행하였다. 주요 분석결과는 다음과 같다. 첫째, 한국의 뉴스는 산업수학의 필요성과 정부의 지원 측면에 대해, 미국에서는 산업수학이 활용되는 다양한 분야에 대해 다루는 것으로 나타났다. 둘째, 한국에서는 온라인 뉴스와 포럼에서 각기 다른 주제로 동일한 개수의 이슈가 나타났지만, 미국에서는 온라인 포럼보다 뉴스 기사에서 더 많은 이슈를 다루고 있는 것으로 나타났다. 이를 토대로 한국에서 산업수학이 정착하는 데 있어 연구자들에게는 학술적, 그리고 정부에는 실무적 시사점을 제시하였다.

• IEIE Transactions on Smart Processing and Computing
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• 제3권5호
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• pp.298-305
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• 2014

In this study, a novel Randomly Shifted Certification Authority Authentication protocol was used in ad hoc networks to provide authentication by considering the MAC layer characteristics. The nodes achieve authentication through the use of public key certificates issued by a CA, which assures the certificate's ownership. As a part of providing key management, the active CA node transfers the image of the stored public keys to other idle CA nodes. Finally the current active CA randomly selects the ID of the available idle CA and shifts the CA ownership by transferring it. Revoking is done if any counterfeit or duplicate non CA node ID is found. Authentication and integrity is provided by preventing MAC control packets, and Enhanced Hash Message Authentication Code (EHMAC) can be used. Here EHMAC with various outputs is introduced in all control packets. When a node transmits a packet to a node with EHMAC, verification is conducted and the node replies with the transmitter address and EHMAC in the acknowledgement.

• International Journal of Advanced Culture Technology
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• 제5권4호
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• pp.51-56
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• 2017

In every Summer and Winter, there open soccer transfer markets. And these markets draw huge attention from soccer fans and other ordinary people all around world. This phenomenon might indicate great interest of people from the amount of news, blog articles, public messages and replies from online community and forums about popular players and clubs of many leagues. Especially, transfer markets in the year 2017 have generated many gossips than before. In this research, we performed keyword analysis and ranking of news and messages collected and analyzed from online news sites and online forum sites, in order to investigate who and what clubs are mainly discussed.

• Journal of information and communication convergence engineering
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• 제14권1호
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• pp.14-20
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• 2016

The AODV protocol uses many RREQ messages and one RREP message in the path-discovery process. This protocol has only one metric, the number of hops. Although it is simple, this protocol is not efficient. To avoid this problem, we propose a new AODV with two auxiliary metrics (AuM-2-AODV). The AuM-2-AODV protocol tries multiple route replies, which reduces the chance of path failure and helps the network obtain a better data rate. It has two auxiliary metrics, the remaining energy of its nodes and the number of HELLO messages received at the nodes. With these two metrics, the reliable path from the source node to the destination node will be chosen. In this paper, the performance of the AuM-2-AODV is evaluated using the NS-3 simulator. The performance results show that AuM-2-AODV provides greater throughput and packet delivery ratio by 20% and up to 50% and about 100% in some cases, respectively, than previous protocols.

• 한국산업경영시스템학회:학술대회논문집
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• 한국산업경영시스템학회 2002년도 춘계학술대회
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• pp.497-505
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• 2002

This paper is a report on the user requirements analysis based on the survey performed during the February and March, 2002. The survey constitutes the preliminary stage of our research on the design of advanced public transportation system(APTS) in ITS service. A random sample of 60 responses were selected from the total of 300 replies that were received for our statistical analysis. We were able to identify what kind of information content Is mostly required by the public transportation users. Some useful guidelines as to how to design the APTS are provided as the conclusion.

• 복식문화연구
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• 제7권3호
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• pp.142-153
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• 1999

The objective of this study was to analysis the pesticide chemical-using of farm workers and working clothes for diminishing the possible damage by their improper chemicals usages. For the data Questionairs were collected 340 from the farm families of the 3 different districts in Yeoju, Kyonggido, and also inquired of the persons in charge of the chemicals and of the laundry in each family. Among the replies, 233 was classified as useful, and analyzed the frequency, the percentage and correlation. The results were as follows : 1. 64.3% of the farmers were using the chemicals for 5∼20 years, of whom 33.6% experienced stopping of chemicals-using for health. 2. The applicators experienced poisoning symptoms such as habitual fatigue, hadache, dizziness, chest discomfort, eye irritation, skin irritation, blurred vision, vomiting, nausea etc. after chemical work. 3. 74.7% answered they did not obtained educational information for the care of chemicals contaminated clothes. 69.1% said they need to obtain educational information about safety awareness of agricultural chemicals.

• Journal of Acupuncture Research
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• 제29권4호
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• pp.81-91
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• 2012

Objectives : There are numerous methods in treating acne scar. On the contrary there are hardly any cases on treating acne scars through Korean medicine. By observing we compared how much acne scar was treated by scar regeneration acupuncture therapy and micro-needle therapy treatment through observing pre and post case photos, KAGS, KCADI and patient satisfaction. Results : By comparing pre and post procedure through acne scar grade criteria, total of 5 patients showed improvement and could see distinct change in skin comparing case photos. After comparing pre and post procedures, total of 5 patients showed improvements in figures of Korean acne index. 4 patients replied very satisfied and 1 replies satisfied on patient satisfaction survey. Conclusions : After observing patients satisfaction, and comparing case photos, acne scar grade criteria, korean acne index, it can be considered that scar regeneration acupuncture therapy and micro-needle therapy done in our clinic to be valid treatment.

• 공학교육연구
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• 제13권5호
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• pp.61-65
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• 2010

As an activity of one working group for the Good Practice program at Kumamoto University, we proposed a questionnaire survey on the degree in which students understand the uppermost points of importance in their classes in addition to the usual type of class questionnaire. Each class lists three uppermost points of importance which are essential for understanding the class content. The degree of understanding is classified into four levels: full, most, insufficient, and not at all understandings. Through the analysis of questionnaire replies, the degree of understanding for bachelor students in the Department of Engineering was discovered to be meaningfully affected by the degree of difficulty, the effectiveness of audiovisual aids, self-study time, and class attendance.

• Journal of Korean Neurosurgical Society
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• 제40권4호
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• pp.309-313
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• 2006

The editorial department of Journal of Korean Neurosurgical Society[JKNS] polled more than 1,210 members of the Korean Neurosurgical Society[KNS] to evaluate the present status of JKNS from a viewpoint of readers or authors. The survey form includes questions about the impressions and opinions of JKNS regarding to its contents, style, and service. There responses were collected by means of e-mail and a total of 107 replies could be gathered during 2 months. Analysis of the responses revealed that majority of members of the KNS recognized the efforts to improve the quality of JKNS during recent years. However, there was also apprehensions and discontent about the quality of articles and review process in some KNS members.