• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.12
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• pp.2835-2842
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• 2013

In this paper, service differentiation scheme using optical buffer that is reduced in size with slow-light technology in optical burst switching networks is presented. In suggested scheme, each outport has buffer to store high-class burst only in case that all its wavelengths are occupied. When all wavelengths are being used, a new arriving high-class burst goes into the buffer and waits until a burst is serviced. As soon as a burst is serviced with a wavelength, the high-class burst at buffer is allocated to the free wavelength. In case that low-class burst is arriving under the same situation, it is not stored at the buffer but discarded. An analytical model is derived to analyze the performance of the suggested scheme and compare its performance with the conventional scheme such as preemption and deflection as well as no service differentiations.

• The Journal of the Society of Korean Medicine Diagnostics
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• v.19 no.3
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• pp.173-184
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• 2015

Objectives The purpose of this study is to understand formation courses of the ten types of LBP (十種腰痛) in Korean medicine through reviewing classic literatures. Methods We summarized sentences describing syndrome differentiation of LBP directly in Uibujeonrok (醫部全錄) and Donguibogam (東醫寶鑑), and then organized similarities and differences among diagnostic factors described in the classic literatures. Results In most of the classics LBP was classified according to the cause but the causes varied depending on the classic literatures. Cheonkeumbang (千金方) tried to suggest a reasonable classification of LBP in a relatively early age. In Dangyesimbeop (丹溪心法) the causes of LBP were divided into 6 factors; qi movement stagnation (氣鬱), dampness-heat (濕熱), kidney deficiency (腎虛), static blood (瘀血), sprain (挫閃) and phlegm accumulation (積痰). It had a lot of influence on the classic literatures published later. Donguibogam was also influenced by the Dangyesimbeop and the ten types of LBP in Donguibogam was similar to the information on the classification shown in Uihakipmun (醫學入門) and Uijongpildok (醫宗必讀). Conclusions We verified universality of the ten types of LBP; kidney deficiency, phlegm-retained fluid (痰飮), food accumulation (食積), sprain, static blood, wind (風), cold (寒), dampness (濕), dampness-heat and qi (氣).

• 한국경영정보학회:학술대회논문집
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• 2008.06a
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• pp.454-471
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• 2008

This study suggests the dynamic pricing model which reveals the organic relationship between ASP (Application Service Provider) price and the related factors, using system dynamics methodology. Basically, we applied the law of supply and demand for analyzing price changes. Then, we deducted ASP price, focusing on fixed cost and variable cost. We also researched the customer's buying behavior according to version differentiation policy. In the version policy, we set up the proposition about customer's satisfaction and willingness-to-pay, using option system. As a result, this research designed the simulation model which analyzes the changes of the sales according to version differentiations and customer's willingness-to-pay. Through this research, we can find effective version differentiation strategies. This paper also found that the larger the number of package, the greater the demand and customer's willingness-to-pay. The increase of the number of package causes the increase of the sales. The increase of the sale is not exactly relative to the number of package. Drawing S-curve, the sales was increased. This dynamic pricing model suggests the ground that the ASP price changes based on the existing version differentiation theory and the demand of customers can affect the changes of the sales. We expect that this model suggests a clear standard of ASP pricing by combining real cases.

• Korean Institute of Interior Design Journal
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• v.13 no.6
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• pp.91-98
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• 2004

The purpose of this study was to investigate the residents' awareness toward the differentiation of design factors in apartments in order to offer the information helpful to housing designers. Documentary research and questionnaire survey methods were used in this study. In this survey, internet web survey was carried out using questionnaire tool that was extracted in the Preliminary survey. This web survey was carried out on 124 housewives from January 6 2004 to January 20 2004. Data were analyzed with the SPSS PC+ window version 11.0. The major results of this study are as follows. 1) Residents' educational level is high and they are so young nuclear family and they live in Seoul and metropolitan area. 2) They want 85$m^2$ type apartment and the dress room that is so large. 3) Although they have evaluate very Important factors to architectural design which are apartment plan design, space design, interior design, storage design, equipment and high-tech system design, it seems that they are interested in interior design among the design factors in apartments. 4) There is significant difference the evaluation of importance toward the differentiation of design factors in apartments according to housing size when they move to go.

• Journal of Internet Computing and Services
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• v.7 no.1
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• pp.151-164
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• 2006

The DCF of IEEE 802.11 standard coordinates transmissions onto the shared communication channel based on CSMA/CA protocol. Currently, 802,11 is the most widely deployed wireless LAN standard. In this paper, for 802.11-based wireless LAN we propose a service differentiation scheme adopting different contention window sizes and retransmission schemes for two different types of data packets and we present a Markov model for the state of a given station under a finite load traffic condition. We then derive an algorithm to find the transmission probability and the throughput. The proposed model is validated through simulation under various system settings.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.42 no.2
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• pp.49-61
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• 2019

As the technological gap amongst manufacturers decreases, the life cycle of products has shortened, and competition accelerates due to the development of technology, incumbent manufacturing companies face growth limitations. In order to overcome such business issues, manufacturing companies are increasingly interested in changes in business models and innovations, especially in the direction of providing services where they can maintain the competitive advantage of their products. In such context, this empirical study examines managerial leadership, differentiation strategies, and products and services pricing as 'servitization factors', which can be driving forces for moving into a new era of growth for Korean SMEs, focusing on the mediating effects of servitization competency. The results are as follows : First, it was confirmed that executive leadership, differentiation strategy, and information & communication technology capability have a direct effect on service sales. Second, the process competency, partnership competency, and ICT competency, which are presented as the service competence of SMEs, were found to play an important role in inducing service sales in managerial leadership, differentiation strategy, product and services pricing. It also emphasized the role of the public policy such as helping to foster SMEs as key partners in the expansion of social facilities and establishing platforms through ICT and data utilization for the convergence of manufacturing services.

• Proceedings of the Korean Society of Crop Science Conference
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• 2022.04a
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• pp.110-110
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• 2022

Rice is the world's most important food crop and a major source of nutrition for about two thirds of populations. Northern Vietnam is one of the most important centers of genetic diversity for cultivated rice. In this study, we determined the genetic diversity and population structure of 79 rice landraces collected from northern Vietnam and 19 rice accessions collected from different countries. In total, 98 rice accessions could be differentiated into japonica and indica with moderate genetic diversity and a polymorphism information content of 0.382. We also detected subspecies-specific markers to classify rice (Oryza sativa L.) into indica and japonica. Additionally, we detected five marker-trait associations and rare alleles that can be applied in future breeding programs. Most interestingly, analysis of molecular variance (AMOVA) found genetic differentiation was related to geographical regions with an overall PhiPT (analog of fixation index FST) value of 0.130. More emphasis was given to provide signatures and infer explanations about the role of geographical isolation and environmental heterogeneity in genetic differentiation among regions in landraces from northern Vietnam. Our results suggest that rice landraces in northern Vietnam have a dynamic genetic system that can create different levels of genetic differentiation among regions, but also maintain a balanced genetic diversity between regions.

• The Transactions of the Korea Information Processing Society
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• v.5 no.4
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• pp.1005-1013
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• 1998

In this paper, we describe technologies of Intranet administrator and user application used in the PEC(Protocol Engineering Center) Office Intranet system which provides platform independent application framework using Internet/Intranet standard technologies for distribution of Web documents and real-time multimedia information. The PEC Office is composed of administrator applications to support environments for administration of all applications including group/user add, update, and delete facilities and construction of user directory and user applications to support schedule sharing, virtual library, job report, output management, budget management, and real-time audio/video broadcasting services. These applications allow differentiation and customization services according to department and title employed per users.

• Journal of Physiology & Pathology in Korean Medicine
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• v.18 no.3
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• pp.701-712
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• 2004

This study investigated reliability of Oriental OB & GY Questionnaires, evaluated the items and correlation relation of differentiation of syndromes of Oriental OB&GY Questionnaires which was used by Dong-Eui OB&GY. We analyzed the results of 553 outpatients's Questionnaires from April 2002 to February 2004. The reliability of Oriental OB&GY Questionnaires above 95% was stagnated blood most, above 90% deficiency of blood, deficiency of Um, heat syndrome, dampness, kidney, liver, heart, spleen, with the exception of phlegm all that was above 80%. The frequency diagnosed of items of differentiation of syndromes dampness, hear, stagnation of Ki was most, the average of item of differentiation of syndromes stagnation of Ki, dampness, deficiency of Ki was most. Correlation coefficient of deficiency of Ki, deficiency of blood, deficiency of Um, cold syndrome, heat, stagnated blood, heart, spleen, kidney, dryness, stagnation of Ki, liver with more than pure question was above 0.8, phlegm was under 0.5. The frequency diagnosed of items of the differentiation of syndromes was not which is related to repeated question and physiology and pathology of oriental medicine.

• Journal of Biomedical Engineering Research
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• v.25 no.4
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• pp.309-314
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• 2004

in this study, hybrid bioreactor was used to apply physical stimuli in cell culture. Effect of the applied physical stimuli on the growth and differentiation of MC3T3-El cell in a three-dimensional Chitosan scaffold were studied by using the hybrid bioreactor. The hybrid bioreactor for physical stimulus was specially designed to apply uniaxial cyclic compressive and shear strain. Physical stimulus was applied over a period of 14 days with 150 cycles per day at a frequency of 0.5Hz. Strain magnitude was 2.5% of the scaffold size. Control group and physically stimulated group of the MC3T3-El tell were incubated and harvested at the indicated times (Day 6, 8, 10, 12, 14). The total amount of protein, which obtained information of cell growth, was determined by Lowey method. Alkaline phosphatase activity was examined by ELISA. Physically stimulated group using the hybrid bioreactor was increased in alkaline phosphatase activity comparing with control group. The nodule formation and calcium deposit of the physical stimuli group which resulted in cell differentiation was faster than that of control group.