• Journal of Korean Society of Steel Construction
• /
• v.27 no.5
• /
• pp.483-491
• /
• 2015

Shear resistance of BESTOBEAM, which has angle as shear connector and was developed with purpose of easy construction, was tested. With the test results shear resistance design equation was proposed. Unlike angle connector of Eurocode 4, BESTO BEMA shear connector behaves like fixed-end beam. Therefor longer span of the shear connector the lower shear resistance it has. As a result, shear resistance of BESTOBEAM shear connector according to its length tends to decrease as its length gets longer. The authors proposed design equation of angle shear connector sased on the test results. The results from the test and the proposed equation match within 10% error range. Therefore the proposed equation can be used for designing shear connector of BESTOBEAM.

• 한국지구과학회:학술대회논문집
• /
• 2006.02a
• /
• pp.83-88
• /
• 2006

본 연구에서는 교사 스스로 느끼는 평가에 대한 거부감을 최소화하면서 바람직한 평가 전문성 신장 방향과 방법을 제공할 수 있도록 과학교사를 대상으로 한 학생 평가 전문성 자기 진단 프로그램을 개발하였다. 이 프로그램은 자기반성적 관점에서 과학교사 스스로 자신의 학생 평가 전문성을 진단할 수 있는 도구와 이를 이용하여 얻은 진단 결과를 바탕으로 학생 평가 전문성 수준을 가늠해 볼 수 있는 학생 평가 전문성 등급 평정 척도와 학생 평가 전문성 신장을 위한 안내로 구성되어 있다. 이 프로그램을 개발하기 위해 본 연구에서는 과학교사의 학생 평가 전문성의 개념을 탐색하고, 바람직한 학생 평가 전문성 신장의 방향과 방법을 모색하였다. 또한 과학교사의 학생 평가 전문성 요소를 추출하여 범주별로 정리한 다음 학생 평가 전문성 요소별로 구체적인 수준과 상태를 제시한 과학교사의 학생 평가 전문성 기준을 마련하였다. 마련된 기준을 근거로 과학교사의 학생 평가 전문성 자기 진단 프로그램을 개발하였다. 이를 위해 문헌연구와 더불어 수차례의 과학교육전문가 검토 및 협의, 학교 현장 교사들의 검토 및 협의를 거치면서 수정${\cdot}$보완하는 과정을 거쳤다. 본 연구에서 개발한 과학교사의 학생 평가 전문성 자기 진단 프로그램에는 진단 내용에 과학교사의 평가에 관한 지식과 더불어 실무적인 능력과 실제로 행하고 있는 평가의 실천 내용이 포함될 수 있도록 노력하였다. 또한 교사 스스로 자신의 평가 전문성 수준을 가늠해 볼 수 있도록 전형적인 응답 유형과 채점 기준, 해설 및 평가 전문성 등급 평정 척도를 제시했고 진단 결과를 바탕으로 평가 전문성의 부족한 부분을 보완하고 신장시킬 수 있도록 간략한 전문성 신장을 위한 처방과 평가 지향에 따른 교사의 전형적인 유형을 제시하여 자기 진단 프로그램을 사용하는 교사가 전문성 개선 방향과 방법을 설정하는 데 도움을 주고자 했다. 본 연구는 과학교사 자신의 학생 평가 전문성에 대한 환심을 높이고, 이를 진단하고 신장시키는 데 도움을 줄 수 있을 뿐만 아니라, 과학교사의 학생 평가 전문성 신장을 위한 방안을 마련하려는 데에도 좋은 시사점을 제공할 것으로 판단된다. 이를 위해 과학교사의 학생 평가 전문성 진단 프로그램에 제시된 전문성 평정 기준을 좀 더 객관화하고 보완할 수 있도록 많은 교사들에게 이 프로그램을 사용해 보게 하고 그 결과를 분석하는 후속 연구가 필요하다. 또한, 본 연구에서는 진단 운항을 제작하는 데 있어 지구과학 내용을 소재로 사용하였으나 본 연구에 제시된 진단 문항 제작에 관한 해설을 참고하여 다른 과학교과 내용을 소재로 한 진단 문항 제작도 필요할 것으로 보인다.

• The Journal of the Acoustical Society of Korea
• /
• v.30 no.5
• /
• pp.295-302
• /
• 2011

The purpose of this study was to develop Korean Consonant Perception Test (KCPT), that is a phonemic level including elementary data to evaluate speech and consonant perception ability of the normal and the hearing impaired qualitatively and quantitatively. KCPT was completed with meaningful monosyllabic words out of possible all Korean monosyllabic words, considering articulation characteristics, the degree of difficulty, and the frequency of the phonemic appearance, after assembling a tentative initial and final consonants testing items using four multiple-choice method which were applied to the seven final consonant regulation and controlled with the familiarity of the target words. Conclusively, the final three hundred items were developed including two- and one-hundred items for initial and final testing items, respectively, with the evaluation of the 20 normal hearing adults. Through this process, the final KCPT was composed upon the colloquial frequency following identification of no speakers' variances statistically and elimination of the highly difficult items. The 30 hearing impaired were tested with KCPT and found that the half lists, A and B, were not different statistically and the initial and final testing items were appropriate for evaluating initial and final consonants, respectively.

• Knowledge Management Research
• /
• v.21 no.3
• /
• pp.123-140
• /
• 2020

In call centers where customers contact a firm's customer service without face-to-face interaction, customer service representatives (CSRs) determine its service competitiveness. In other words, a firm's service excellence relies on its CSRs. Drawing on the concept of agility from service and information technologies studies, this study conceptualizes customer response capability as a variable consisting of customer response expertise and customer response agility, and further verifies its effects on customer service performance. Moreover, this study examines whether a firm's digital and human knowledge resources are related to CSRs' customer response capability. To empirically test the proposed hypotheses, the partial least squares analysis is conducted with a total of 371 responses collected on CSRs from two insurance call centers. The findings indicate that a firm's digital and human knowledge resources enhance CSRs' customer response expertise and customer response agility, thereby increasing customer service performance. The results draw the conclusion that CSRs' customer response capability is a key antecedent of superior customer service.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.19 no.10
• /
• pp.2367-2372
• /
• 2015

One of various low-density parity-check(LDPC) codes that has been adopted in many communication standards due to its error correction ability is a quasi-cyclic LDPC(QC-LDPC) code, which leads to comparable decoder complexity. One of the main blocks in the QC-LCDC code decoder is a multi-size circular shifter(MSCS) that can perform various size rotation. The MSCS can be implemented with many structures, one of which is based on Banes network. The Benes network structure can perform the normal MSCS operation efficiently, but it cannot use the properties coming from specifications like rotation sizes. This paper proposesd a scheme where the Benes network structure can use the rotation size property with the modification of the control signal generation. The proposed scheme is applied to the MSCS of IEEE 802.16e WiMAX QC-LDPC decoder to reduce the number of MUXes and the critical path delay.

• The KIPS Transactions:PartD
• /
• v.18D no.6
• /
• pp.451-460
• /
• 2011

The ability to trace change history and dependency relations of software artifacts which are continuously changed has been recognized as an important factor that support quality management activities such as verification, validation, and testing in software system development process. General software configuration management systems provide tracing information for artifacts only within the configuration management system, and it does not go further to changes that occur within personal workspace. This paper provides a solution that helps tracing down not only changes of configuration items but also change history of artifacts existent in personal workspace through the integration of configuration management system and personal workspace. Furthermore, in cases of artifacts which are included in a configuration item, this paper provides a solution that support tracing dependency relations between the artifacts by identifying their version links. For the integration of configuration management system and personal workspace, a revision of configuration item is connected to the artifact's version of the workspace by the tagging mechanism, and traceability for change history and dependency relations of artifacts can be managed more effectively through integrated change process.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.35 no.2C
• /
• pp.172-181
• /
• 2010

In this paper, we propose an adaptive block quantization method. The propose method perfrect reconstructs side information without high complexity in the encoder side, as transmitting motion vectors from a decoder to an encoder side. Also, at the encoder side, residual signals between reconstructed side information and original frame are adaptively quantized to minimize parity bits to be transmitted to the decoder. The proposed method can effectively allocate bits based on bit error rate of side information. Also, we can achieved bit-saving by transmission of parity bits based on the error correction ability of the LDPC channel decoder, because we can know bit error rate and positions of error bit in encoder side. Experimental results show that the proposed algorithm achieves bit-saving by around 66% and delay of feedback channel, compared with the convntional algorithm.

• Journal of KIISE:Software and Applications
• /
• v.41 no.8
• /
• pp.557-568
• /
• 2014

Recently, software projects have been increasing and getting complex. Due to the large number of submitted bug reports, developers' workload increases. Generally in bug triage process, the triagers assign the bug report to fixer (developer) in order to resolve the bug. However, bug reports have been reassigned to other developers because fixers are not suitable. This is why the triagers did not correctly check and understand the bug report and decide the appropriate developers to fix the bug. This results in increase of developers' time and efforts in software maintenance. To resolve these problems, in this paper, we propose a novel method for developer recommendation based on topic model and social network. First, we build a basis of topic(s) from bug reports. Next, when a new bug report (test data set) comes, we select the most similar topic(s) and extract the participated developers from the topic(s). Finally, by applying social network, we analyze the developers' behavior (comment and commit activity) and recommend the appropriate developers. In this paper we compare our work with related studies through performance experiments on open source projects. The results show that our approach is more effective than other studies in bug triage.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.37 no.3
• /
• pp.292-305
• /
• 2013

This study reported present state of clothing technical designers' work duties and working conditions, so as to suggest effective ways to develop professional training methods for them. Technical designers working for vendors and agents were surveyed as they represent the majority of technical designers in Korean clothing industries. Survey participants were 62 technical designers working for 6 clothing vendors and 2 clothing agents, and the survey closely inspected their work qualifications, duties and responsibilities, working conditions and training conditions. Survey was conducted from June $27^{th}$ to July $17^{th}$, 2012. The questionnaire examined frequency analysis and multiple response analysis using SPSS 19.0 Windows after investigating documents and work fields through personal experiences and interviews from technical designers for data collection and analysis. A chi-square test analyzed the preferred type of fitting for technical designers of vendors and agents. The results showed that 32.3% of those surveyed have more than 7 years of work experience and the highest level of education is predominantly a bachelor's degree (57 people, 91.9%). Among the work responsibilities, respondents did sample measuring more than four times a day. Also, the results showed that technical designers needed to qualify: first 'Fitting Technic', second 'Pattern Correction Capability', and third 'English Skills to Communicate with Buyers'; subsequently, education on several technics (such as measuring, grading, and fitting) were required for the job. Current technical designers answered that they need more various work-related education. However, the analyzed results showed that pre work-related training was insufficient. The data shows that technical designers require re-education in 'Pattern Correction Method' (61.3%) and 'Sewing Education' (64.5%).

• Journal of Satellite, Information and Communications
• /
• v.8 no.1
• /
• pp.35-39
• /
• 2013

Space technology is a core technology which is emerging as the most competitive industry in the 21st century. However, it is said that private enterprises may have some limitations to run the space business independently because the space industry requires not only to enormously spend the amount of investment at the beginning stage of business but also to have lots of difficulties to get the amount of investment in the short period of time. Therefore, the advanced countries of having the space industry such as America, Japan, France and so on have been developing the space technologies through the help of their governments to some level at the beginning stage of business. Korea established the space development promotion law in 2005. Also Korea has been making efforts to correct the national space development middle and long term basic plans. However, while Korea becomes the 8th economic country in the world, Korea does not have a large enterprise which has ability to supply the domestic satellite demands, and to export satellites to foreign countries by developing satellites without having any help from foreign companies. Therefore, this paper described the activating scheme of satellite industry to efficiently carry out the Korea's space development mission, and to enforce the global competitive power.