• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.10 no.12
• /
• pp.2308-2314
• /
• 2006

Internet Technology allowed general commerce to have proceeded actively, and now it is sharply evolving into Mobile Commerce. Mobile Commerce came into an inheritance of the Electronic Commerce, thought the feature to be different form is various as well. Many researches that analyzed the feature of Electronic Commerce were carried out but those were processed according to its location and field only. This study extracted and analyzed the factor that considered the several positions for Mobile Commerce so that it can reflect diverse the demands from those related to Mobile Commerce. It sought the new characteristic which is different from the Electronic Commerce, and took account of the successful factor for Mobile Commerce which includes the position in a user, a developer and an operator. In addition AHP (Analytics Hierarchy Process) was used in order to evaluate the subject characteristic applied to each related to through more objective methods. The analysis results identified in this study such as the quality trust and understandability for an information duality might be the one of the chief elements of success in Mobile Commerce which applies at the present.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.7 no.7
• /
• pp.1533-1546
• /
• 2013

Wireless multicast is considered as an effective transmission mode for the future mobile social contact services supported by Long Time Evolution (LTE). Though wireless multicast has an excellent resource efficiency, its performance suffers deterioration from the channel condition and wireless resource availability. Cognitive Radio (CR) and Device to Device (D2D) are two solutions to provide potential resource. However, resource allocation for cognitive wireless multicast based on D2D is still a great challenge for LTE social networks. In this paper, a joint sub-carriers and power allocation model based on D2D for general cognitive radio multicast (CR-D2D-MC) is proposed for Orthogonal Frequency-Division Multiplexing (OFDM) LTE systems. By opportunistically accessing the licensed spectrum, the maximized capacity for multiple cognitive multicast groups is achieved with the condition of the general scenario of imperfect spectrum sensing, the constrains of interference to primary users (PUs) and an upper-bound power of secondary users (SUs) acting as multicast source nodes. Furthermore, the fairness for multicast groups or unicast terminals is guaranteed by setting a lower-bound number of the subcarriers allocated to cognitive multicast groups. Lagrange duality algorithm is adopted to obtain the optimal solution to the proposed CR-D2D-MC model. The simulation results show that the proposed algorithm improves the performance of cognitive multicast groups and achieves a good balance between capacity and fairness.

• The KIPS Transactions:PartC
• /
• v.13C no.6 s.109
• /
• pp.795-802
• /
• 2006

The Electronic Commerce with development was advanced information technique in transaction from at the election, and now it is sharply evolving into Mobile Commerce capable of Electronic commerce while the user moves. Mobile Commerce has some feature in Electronic Commerce, but has the different feature. analyzed the feature of Mobile Commerce were carried out, but those were processed according to its location and field only and special of view. This study sought the new characteristic which is different from the existing Electronic Commerce, and took account of the successful factor for Mobile Commerce which includes the position in a user, a developer and an operator. In addition, AHP (Analytic Hierarchy Process) was used in order to evaluate the extract factor applied to each related to through more objective methods. The analysis results identified in this study such as the quality trust and the accessibility to understanding for an content duality might be the one of the chief elements of success in Mobile Commerce which applies at the present.

• The Journal of Korean Medicine
• /
• v.26 no.3 s.63
• /
• pp.43-54
• /
• 2005

Backgrounds : Many people think that ski disease has littel influence on the quality of life in patient, but various studios show that skin disease may produce a range of impacts on QOL. Nevertheless, there is much to be learned about the association between the duality of life and skin disease in the area of Oriental dermatology. Objectives : This study was conducted fe investigate the impact of the various skin diseases on QOL and explore prognostic factors that influence outcomes. Methods : 103 patients were recruited who filled out more than $90\%$ of the skindex-29 questionnaire. The function of sum scores and three domain scores with each skin disease were investigated, as well as the correlation of each domain scores. Results : The disease with the lowest qualify of life was atopic dermatitis. followed by eczematous dermatitis, seborrheic dermatitis and acne vulgaris in order. The sum scales showed significant correlation with three domain scores in atopic dermatitis, urticaria, allergodermia, acne vulgaris, psoriasis and seborrheic dermatitis, The correlation of all three domain scores was significant in atopic dermatitis, urticaria, allergodermia, and psoriasis. Conclusions : Tn this study, skin disease affects the quality of life in physical, social, and psychological factors- Thus, we must consider the quality of life as well as clinical severity inpatients with skin disease.

• The Research Journal of the Costume Culture
• /
• v.13 no.5 s.58
• /
• pp.743-755
• /
• 2005

The Purpose of the study was to compare clothing shopping motives, fashion information sources, evaluation criteria of apparel products, store selection criteria, apparel buying places, and purchasing experience and country of origin place on imported clothing. The total of 371 consumers, college female students in Korea and Japan were sampled in both countries. ANOVA, factor analysis, Duncan's multiple range test, t-test, frequency, and percentage as analysis methods were used. The results of the study were as follows. According to the comparative analysis of clothing purchasing behavior by factors, the result showed that both of them had more personal motives than social ones, regarding clothing purchasing motives. The clothing purchasing motives of students in Korea was higher than it of students in Japan. In the use of information sources, the students of both countries considered the information by consumer very importantly. Next to it, they highly regarded the information by marketer. The students in Korea used all informations more than the students in Japan. In the clothing selection, both of them considered criteria esthetics very importantly. The students in Korea considered 'brand name', 'versatility', and 'pleasing to others' as important, but the students in Japan considered 'price' and 'prestige' very importantly. For store selection criteria, Korean students considered 'duality guaranteed', 'service', and 'their and other's experience' as important but Japanese students regarded 'price' and 'variety of products' as important. A department store was the most highly preferred among clothing purchasing stores. After it, for Korean students, fashion mall, renowned brand stores, discount store were considered in order of preference, for Japan, speciality stores, fashion mall, renowned brand stores are preferred. Regarding imported clothing, Korean students, in order of preference, preferred the goods of America, Italy, France, England, etc. Japan students preferred the goods of America, Italy, China, France, etc.

• Journal of Korean Society of Transportation
• /
• v.27 no.1
• /
• pp.191-200
• /
• 2009

This study develops composite indicators that is capable of estimating QOS (Quality of Service) of pedestrians by enhancing estimation for Level of Service in present transporting spaces for pedestrians that merely concerns quantitative indicators such as pedestrian flow rate, pedestrian stoppage. This paper conducts survey questionnaire to collect data. It utilizes AHP(Analytic Hierarchy Process) and ANP(Analytic Network Process). The main results show that: first, ANP is better analytic methods than AHP due to the fact that pedestrians feel repetition when they judge level of service. Second, qualitative factors such as pedestrian behaviors, maintenance, scenary for pedestrians and environments should be considered. Importance of qualitative factors is higher in residential area than other areas. I expect that using qualitative indicators and quantitative indicators is appropriate in order to estimate pedestrians' QOS.

• Korean Journal of Fisheries and Aquatic Sciences
• /
• v.6 no.3_4
• /
• pp.101-111
• /
• 1973

To study the effect of freezing rate on the duality of frozen abalone(Haliotis gigantea, GMELIN) liquid nitrogen spray freezing, air blast freezing, semi-air blast freezing, and still air freezing were carried out. The rheological change, protein denaturation, and free water content of frozen and thawed abalone were examined at the period of 0, 1, 2, and 3 month during cold Storage at $-20^{\circ}C$. The results are summarized as follows : 1. The onset and duration of rigor mortis of fresh abalone was faster and shorter as compared to that of fishes. 2. There was no difference in compression value and shear value between freezing methods but they varied with a slight decrease in storage period. 3. Gradual decrease in extractibility of salt soluble protein was observed in all samples except those frozen with liquid nitrogen. 4. The free water of the foot muscle remained constant during the storage while that of the adductor muscle tended to increase. 5. A significant correlation was observed among the changes of panel texture and free water (P< 0.01), protein denaturation (P<0.05), and compression value (P<0.01).

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.36 no.12C
• /
• pp.764-773
• /
• 2011

Despite enormous performance gain with multi-antenna transmission in the single cell environment, its gain diminishes out in the multi-cell environment due to interference. It is also very hard to solve the efficient downlink beamforming with low complexity in multi-cell environment. First, this paper shows that the asymptotically sum rate optimal downlink beamformings at low and high SNR are maximum ratio transmit (MRT) and zero forcing (ZF) beamforming in the multi-cell system, respectively. Secondly, exploiting the asymptotically optimal downlink beamforming, we develop simple two types of near optimal downlink beamforming schemes having the form of minimum mean squared error (MMSE) beamforming obtained from the dual uplink problem. For each type, three different subclasses are also considered depending on the computational complexity. The simulation results show that the proposed near optimum algorithms provide the trade-off between the complexity and the performance.

• The Journal of Industrial Distribution & Business
• /
• v.10 no.7
• /
• pp.71-82
• /
• 2019

Purpose - This study aims to identify the priorities of medical service quality improvement by customer satisfaction characteristics and potential customer satisfaction improvement (PCSI) index based on the dualistic quality classification of Kano Model (1984) for Comprehensive Health Screeening Center in General Hospitals and Centers only for Comprehensive Health Screening and suggest a direction for future improvement. Research design, data, and methodology - Through advanced research on health screening medical service quality, this study set four service quality factors, including tangible, human, process and supportive factors, and 39 measurement items. Based on these items, the study used 117 questions, which consist of dualistic quality factors, customer satisfaction coefficients, positive and negative questions for PCSI index and questions for current satisfaction. 300 effective samples were collected for adults in their 20s who experienced health screening service in Seoul, Gyeonggi-do and Incheon within the past two years. Collected data were input in the quality evaluation duality table to categorize quality factors and calculate customer satisfaction coefficients by Timko(1993). The study also analyzed PCSI index in comparison with current satisfaction and identified priorities in quality improvement. Results - It was found that the most urgent factors to improve the quality in both groups were adequate waiting hours and emergency response for complications, which are process factors classified as unitary quality. It is urgently needed to improve the quality as the PCSI index was high in supportive factors (complaint response team) as attractive quality in Comprehensive Health Screening Center in General Hospitals and in process factors (prevention of infection) as unitary quality in Centers only for Comprehensive Health Screening. As the PCSI index was low in space use as a tangible factor, it was found that the current level can be maintained instead of improvement. Conclusions - To improve the health screening medical service quality, it is required to focus on process factors (adequate waiting hours, emergency response for complications, prevention of infection) and supportive factors (complaint response team) among service qualities perceived by users. It is proposed to ensure continuous efforts to manage and reinforce priorities as a direction for future improvement in health screening service.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.8 no.1
• /
• pp.9-14
• /
• 1979

The consumption of catchup is increasing due to the raising of income level and food industry and westernization of dietary life followed by economic growth. In this paper I picked up three kinds of food produced by two foreign food companies and three kinds of food by two domestic companies. The average results by experimentation on the nutritive ingredients and the standard quality was as follows; A. Nutritve ingredients; 1) Water content a) Domestic 68.3% b) Foreign 69.1% 2) Protein content a) Domestic 2.2 g b) Foreign 2.1 g 3) Fat content a) Domestic 0.1 g b) Foreign 0.1 g 4) Carbohydrate content a) Domestic 25.1 g b) Foreign 24.6 g 5) Mineral content (Ash) a) Domestic 4.4 g b) Foreign 3.9 g 6) Calcium content a) Domestic 33.5 mg b) Foreign 24.2 mg 7) Phosphorus content a) Domestic 16.1 mg b) Foreign 24.2 mg 8) Vitamin C content a) Domestic 14.6mg b) Foreign 16.0 mg B. Standard quality 1) Remains after evaporation a) Domestic 41.7% b) Foreign 38.4% 2) Free mineral acid content a) Domestic none b) Foreign none 3) Tar chromatophore a) Domestic $trace(Acid)^+$ b) Foreign none 4) Heavy metalic $elements^*$ 5) Sodium chloride content a) Domestic 3.3% b) Foreign 3.3% 6) pH level a) Domestic 3.83 b) Foreign 3.76 + The tar chromatophore elements could not be accurately measured by chromatography. * The heavy metalic elements were both under safety levels in the domestic and foreign products.