• Bulletin of the Korean Chemical Society
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• v.31 no.3
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• pp.624-629
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• 2010

The synthesis and evaluation of a novel calix[4]arene-based fluorescent chemosensor 1 for the detection of I. is described. The fluorescent changes observed upon addition of various anions show that 1 is selective for I. over other anions. Addition of I. results in ratiometric measurements with 1 : 1 complex ratio.

• Korean Journal of Crystallography
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• v.10 no.1
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• pp.13-19
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• 1999

저합금강인 SCM415강에 대한 플라즈마 질화의 변수에 따른 질화특성을 관찰하여 최적공정을 확립한 후 기존의 질화법인 염욕질화와 가스질화 되어진 시편과 피로특성을 비교하였다. 가스조정비는 질소대 수소의 비가 3:1일 때 가장 높은 표면강도를 가지며, 온도는 높아질수록 표면강도는 낮아지고 유효경화깊이는 깊어지는 것을 알 수 있었다. 또한 질화시간이 증가될수록 표면경도는 낮아지고 유효경화깊이는 깊어졌다. 본 플라즈마 질화장비에서의 최적공정조건은 공정온도 500℃, 공정시간 4시간, 질소와 수소의 비가 3:1으로 관찰되었고, 이 때 표면경도는 1181 Hv, 화합물층의 깊이 17 ㎛, 유효경화깊이 450 ㎛로 측정되었다. 가스질화 되어진 시편의 표면경도는 945 Hv, 유효경화깊이 250 ㎛였고, 염욕질화 되어진 시편의 경우는 각 846 Hv, 300㎛으로 관찰되었다. 또한 플라즈마 질화공정을 거친 질화강과 가스질화, 염욕질화 되어진 질화강의 피로특성을 평가한 결과 플라즈마 질화강이 가스질화, 염욕질화 되어진 질화강에 비하여 1.5∼2배의 우수한 피로특성을 나타내었다.

• IEIE Transactions on Smart Processing and Computing
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• v.3 no.6
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• pp.388-392
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• 2014

This paper proposes an early termination method of a block vector search for fast encoding of high efficiency video coding (HEVC) screen content coding (SCC). In the proposed algorithm, two blocks indicated by two block vector predictors (BVPs) were first employed as an intra block copy (IBC) search. If the sum of absolute difference (SAD) value of the block is less than a threshold defined empirically, an IBC BV search is terminated early. The initial threshold for early termination is derived by statistical analysis and it can be modified adaptively based on a quantization parameter (QP). The proposed algorithm is evaluated on SCM-2.0 under all intra (AI) coding configurations. Experimental results show that the proposed algorithm reduces IBC BV search time by 29.23% on average while the average BD-rate loss is 0.41% under the HEVC SCC common test conditions (CTC).

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.13
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• pp.283-302
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• 2000

The firms aim to acquire services and costs advantage from logistics outsourcing strategy. But it is very important to select optimum service provider. A checklist of the criteria for the evaluation of service providers follows : service quality, low cost, logistics information system, service network, financial stability, investments in plant and equipment, management attitude and lookout for the future strategic fit, cultural and psychological barriers etc. Also, a 8-step implement of logistics outsourcing strategy will be of help for maximizing benefits of logistics outsourcing. It follows : 1-step : logistics environment analysis, 2-step : check service provider availability, 3-step : logistics outsourcing determinant analysis, 4-step : select of optimum service provider, 5-step : contract with optimum service provider, 6-step : identify of remaining barriers, 7-step : performance of logistics outsourcing, 8-step : evaluation.

• Information Systems Review
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• v.3 no.1
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• pp.191-203
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• 2001

The purpose of this research is to investigate success factors for supply chain management. According to the statistical analysis of 98 survey data, we find that the success factors mentioned in this literature(Supplier-Buyer relations, Inter-organizational Coordination, Planning & Control, Information Technology) positively affect the corporate performance. This research also indicates that supply chain management should be implemented according to dependent industrial characteristics and external conditions. We used three key environmental factors: (1) The product exchanged and its technology, (2) the competitive condition in downstream market, (3) capabilities of the suppliers available.

• Journal of Sasang Constitutional Medicine
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• v.18 no.1
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• pp.62-74
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• 2006

1. Objectives This is a statistical study on the Reliability and Validity of the Revised Questionnaire for the Sasang Constitution classification(QSCC II +). 2. Methods To analyze the reliability; we gathered the results of the QSCC II + of 266 people. Each person took the questionnaire three times, and the interval of the examinations were about one year. With the results, we used stratified analysis to check up the consistency rate of three examinations, and analyzed the tendency of agreement by crosstabs to get the kappa value. For the validity, we gathered the results of the QSCC II + of 587 people who were Taeumin, Soyangin, Soeumin. They took the questionnaire once, and SCM specialists strictly examined to diagnose their Sasang constitutions. We compare their results of the QSCC II + to the diagnostic result of their Sasang constitutions, and analyzed by crosstabs to get the rate of accuracy of the QSCC II +, and the kappa value for the measure of agreements. 3. Results and Conclusions The expected rate to get the same results was 54.5% in Soyangin, 68.1% in Taeumin, 65.7% in Soeumin, and kappa value was $0.311{\sim}0.414$, which means the reliability of the QSCC II + is analytically significant. The accuracy of the results of QSCC II +, compared to the diagnosis of the SCM specialists, was 58.4%, but increased up to 60.8%, and validity also became moderately good(K=0.412) by age limitation. Because in the 70's results of the QSCC II + isn't likely to agree to the diagnosis of the SCM specialists.

• Korean Journal of Food Science and Technology
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• v.20 no.2
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• pp.164-169
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• 1988

Protoplast susion between Zygosaccharmoyces rouxii M-12 and Saccharimyces cerevusuare M-43 were investigated for breeding of a new brewing yeat strain for soy sauce. Auxotrophic mutants of Zygosaccharomyces rouxii ZRM-83 ($Met^-,\;Thr^-$) and Saccharomyces cerevisiae SCM-46 ($Lys^-,\;Arg^-$) were selected by treatment of 3.0% ethylmethane sulfonate and nutritional complementary method. Protoplast of both strains were more effective by treatment of 0.05mg/ml zymolase 20T for 60min. Fusion effeciency was much higher by treatment of 30% PEG 6,000 for 30min and fusion frequencies were $10^{-4}{\sim}10^{-5}$. These fusants originated from two protoplasts had properties of big cell size and much DNA content.

• Journal of Sasang Constitutional Medicine
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• v.19 no.2
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• pp.73-81
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• 2007

1. Objectives This study was to investigate correlation between the diagnosis of Sasang Constitutional Medicine(SCM) and the differentiation of syndromes according to the state of Qi, Blood, Body Fluid, Phlegm retention and the five viscera in storke inpatients. 2. Methods Stroke inpatients were investigated through questionaire of differentiation of syndromes and QSCC2. The results were analyzed statistically by one-way ANOVA on SPSS 12. 3. Results and Conclusions 1) Soeumin had a high grade on Qi-insufficiency than other consititutions. 2) Soyangin had a low grade on Qi-insufficiency, spleen disease than other consititutions. 3) There were not significant results in the investigation item of the sweating, constipation, diarrhea, anorexia, abdominal pain among the constitutions.

• Journal of the Korean Society of Manufacturing Technology Engineers
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• v.6 no.2
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• pp.112-118
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• 1997

Characteristics of AE(Acoustic Emission) signal is related to cutting conditions, tool materials, and tool geometry in metal cutting. Relation between AE signal and tool wear was investigated experimentally. Experiment is carried out by interrupted cutting for SCM420 workpiece with TiN coating tool on HSS material. AE RMS voltage and count per event were increased according to tool wear. The major results are as follows : 1) AE RMS value is nearly constant as cutting speed changes, but is rapidly increase as feed rate increases. 2) AE RMS value and Count per Event increase as tool wear increases. 3) It is more effective to monitor tool wear by Incremental rate of AE RMS value than by Incremental rate of count per event.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.16 no.11
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• pp.994-1000
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• 2003

In this study, gel polymer electrolytes (GPE) with semi-interpenerating network of poly (methyl methacrylate) and hexanediol dimethacrylate were synthesized and their electrochemical performances were evaluated. LiCoO$_2$/GPE/graphite cells were prepared and their performances depending on discharge currents and temperatures were evaluated. The precursor containing 5 vol% curable mixture had a low viscosity relatively. GPE showed good electrochemical stability up to potential of 4.8 V vs. Li/Li$\^$+/. Ionic conductivity of the gel polymer electrolyte at room temperature and -20$^{\circ}C$ was ca. 5.9 and 1.4${\times}$10$\^$-3/ Scm$\^$-1/, respectively. LiCoO$_2$/GPE/graphite cells showed good rate capability, low-temperature performance and cycleability.