• International journal of advanced smart convergence
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• 제6권4호
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• pp.33-40
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• 2017

In this paper, complex quadruplet zeros of microwave filter systems are investigated. For the cascaded systems the chain matrices are most conveniently used to derive the voltage transfer function of Laplace transform with cascaded two-port subsystems. The convenient relations of transfer function and chain matrix are used in order to find the transmission zeros. Starting from a ladder network, we introduced a crossed-coupled lumped element, in order to show the improved response of bandpass filter. By solving the transmission zero characteristic equation derived from the cascaded subsystems, we found the zeros of filter system with externally cross-coupled lumped elements. With the cross-coupled elements of capacitors, the numerator polynomial of system transfer function is used to locate the quadruplet zeros in complex plane. When the two pairs of double are on the zeros -axis, with the perturbed values of element, we learned that the transition band of lowpass filter is improved. By solving the characteristic equation of cascaded transfer function, we can obtain the zeros of the cross-coupled filter system, as a result of perturbed values on lumped element.

• 유통과학연구
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• 제14권2호
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• pp.5-12
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• 2016

Purpose - The present study examines the interrelationship between various components constituting shopping experience in the context of the Indian shopping malls. Research design, data, and methodology - Extracting components of shopping experience from the literature review, the study used Interpretive Structural Modelling (ISM) to propose a conceptual model. The study adopted a mixed methods research involving theoretical constructs from past research, qualitative assessment of relationship between the constructs and imposing definite order and direction to qualitative relations based on mathematical computations. Results - Proposed model indicates that the five components of shopping experience (ambience, physical infrastructure, convenience, marketing focus and safety and security) do not converge directly into shopping experience. Rather, they operate following a hierarchy of influences in which marketing focus plays the role of the initiator. Conclusions - This model points at the order of preference of different components of shopping experience and can be a useful guide for retail industry, especially mall developers and supermarket/hypermarket, may use the findings in key decisions about development of physical infrastructure, which are based on marketing focus.

• 패션비즈니스
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• 제8권3호
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• pp.10-19
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• 2004

The purpose of this research is to reveal the antimicrobial activity of pet-dog clothes by investigating the bacteria resistance of 4 kinds of pet-dog clothes materials. 1. Investigation Results of Pet-Dog Clothes 64.7% of 150 survey participants, revealed they had pet-dog clothes. Hand laundering was 67.0%, while the laundering of both human and animal clothes was 9.2%. The greatest washing frequency was once every 2 weeks. So, the subjects didn't seem to think high of hygienic matters. Even though no if any relations were reported by 34.7% of the subjects, there were some experiences like sneezing or coughing (41.3%), slight itching (20.7%), and acute skin allergies. There were such hugging methods as heart to heart to the center (22.7%), face to face and around the mouth (16.7%), and below the heart with the dog's face outward (15.3%). Thus, hugging the dog near the pet-lover's face seems to be the cause of respiratory diseases including sneezes and coughs. 2. Results of the Anti-Bacteria Experiment of Pet-Dog Clothes Materials According to the analysis of the germs collected and cultured in this study to reveal the properness of pet-dog clothes materials, they were bacteria or bacilli in shapes. Spore growth was active in the order of such experimental materials as artificial leather > cotton > cotton/ nylon > polyester (finest thread). In terms of germ groups, the order was polyester(finest thread) > cotton > cotton/ nylon > artificial leather.

• 대한한방부인과학회지
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• 제19권4호
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• pp.174-204
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• 2006

Purpose : The purpose of the present study was to know the correlation between PMS and personal factors as preceding research in order to make counter plan against PMS. Methods : Writer surveyed total 325 females(working 160 females and non-working 165 females) and made a statistical analysis in order to know the correlation between PMS and personal factors. Results : Factors that influence on PMS were caffeine intake, experience about taking contraceptive or not, family relations, annual income, now working or not, now taking exercise or not, stress, body mass index, experience of childbirth, color of menstruation, grade of menstrual pain, style of menstrual pain. Conclusion : Hereafter, we hope that this survey help Oriental Gynecological Clinic for treating PMS.

• 한국IT서비스학회지
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• 제12권1호
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• pp.201-213
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• 2013

The use of online shopping mall has been increasing rapidly, which reflects the convenience and economic benefits associated with its usage. As with traditional offline businesses, internet businesses have to manage customer relations to provide better services in order to ensure their business sustainability. In this regard, identifying the influencing factors to reuse intention of online shopping mall is very important. In this paper, we aim to examine the effects of perceived and individual variables on intention to reuse in the context of online shopping mall. In order to analyze the antecedents, we selected perceived and individual factors such as shopping enjoyment, concentration, perceived variety and maximizing tendency. For empirical analysis, we surveyed real users of online shopping mall. As a result, all antecedents showed significant influence on intention to reuse except perceived variety and among the variables the concentration has top standardized coefficient. In addition, perceived variety has significant effect on shopping enjoyment but not on concentration. Maximizing tendency is related to shopping enjoyment and concentration significantly. The results of this research can be useful guidelines for online shopping mall providers.

• 물과 미래
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• 제15권1호
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• pp.57-62
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• 1982

본 연구에서는 1차원 부정류를 나타내는 Saint Venant의 편미분방정식을 Preissmann의 Implicit 기법에 의하여 유한차분방정식을 구성한 후에 Double sweep 알고리죽을 적용하여 해석하는 문제를 다루었으며, 본 차분방정식의 안정성과 정도를 검토하였고 $C_r$, $\theta$ 및 Chezy 계수 등의 영향을 1차원 Seiche 운동에 관한 수치실험을 통하여 분석하여 보았는 바, 그 내용은 다음과 같다. 1. 보조관계식을 활용함으로써 Double sweep 알고리즘의 적용이 가능하였다. 2. 해석결과에 가장 큰 영향을 미치는 인자는 $C_r$, $\theta$ 및 Chezy 계수인 바, 높은 정도의 결과를 얻기 위해서 $C_r$은 1보다 너무 큰 값은 피해야 될 것이며, $\theta$의 적합한 범위는 0.6<$\theta$<1.0이였다. 3. 본 모형은 1차원 장파의 전파에 적용하였던 바 안정된 결과를 보였다.

• 한국유체기계학회 논문집
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• 제2권2호
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• pp.64-73
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• 1999

The three-dimensional numerical study of a water jet pump was carried out to investigate the relationship between performance and the geometric variables of nozzle space, area ratio, and throat length. Because of the complex geometry, the multiblock technique was adopted for numerical analysis and a special treatment for transferring data from each of the block interfaces was implemented in order to maintain the conserved properties. To validate the present code, flow passing through a square duct with a 90-deg bend was computed, our results show good accordance with other experimental and computational results. The numerical simulation was done with the flow of the water jet pump having a 180-deg bend in order to calculate the performance at different operating conditions. The performance of the water jet pump can be improved by study of parameters which clarify the relations between the geometric variables and the flow characteristics of vortex strength and location.

• 한국실내디자인학회논문집
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• 제20권2호
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• pp.94-101
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• 2011

As the existing paradigm of consumption has changed, companies have been actively engaged in targeting culture-oriented emotion, creating added values through appealing to customers' emotion and improving the values of culture and art. Each company has created differentiated space and inner space to lead trends, and has provided space for various experiences as an innovative marketing area to attract customers and promote consumption. In this aspect, we should focus on space marketing which considers cultural background or emotion as a main target Therefore, this study selected a cultural program as a strategic means to identify space marketing in terms of experience. The study speculated marketing in terms of space experience and analysed space for cultural programs with differentiated experiences in order to use the results as basic data for identifying the marketing values of the cultural programs and their uses. The results of the study are presented as follows: when space experience is a factor of marketing and the cultural program is a tactic in terms of marketing, their specific relations are speculated through a certain module. The order of using the cultural program for space experience, features of space representation and tactics for experience were different and the strategies evoked very complicated and mixed experiences.

• 한국항해항만학회지
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• 제35권4호
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• pp.335-342
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• 2011

The purposes of this study were to analyze the effects of a marine leisure exhibition event(MLEE)'s appraisal attributes on visitors' satisfaction and rep-visit intention and thus provide fundamental information that facilitates developing effective marketing and operational strategies for a MLEE. In order to accomplish such purposes, this study employed a survey with a total of 300 visitors to a MLEE hosted by G Province. Questionnaires were developed on the basis of related studies and modified to reflect the study context. Then, such questionnaires were verified to be valid and reliable through content validity, factor analysis and internal consistency analysis. Valid 286 questionnaires were analyzed with correlation analysis and multiple regression analysis on significance level of .05. Following findings were derived from current study. First of all, the appraisal attributes of a MLEE had a significant effect on visitors' satisfaction and among them only the factor of event program had a unique relation with the levels of satisfaction. In addition, the appraisal attributes of the MLEE also had a significant effect on visitors' rep-visit intention behavior and among them event program, transportation and employee factors had unique relations with the performance variable in order. In conclusion, all the research hypotheses that had been set up through previous studies were confirmed in this study.

• Industrial Engineering and Management Systems
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• 제16권1호
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• pp.129-140
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• 2017

This research was conducted in order to solve the problem of selecting an operational strategy for projects in project-based organizations by designing a fuzzy expert system. In the current research, we first determined the contributing parameters in operational strategy of project-based organizations based on existing research literature and experts' opinion. Next, we divided them into two groups of model inputs and outputs and the rules governing them were determined by referring to research literature and educational instances. In order to integrate rules, the revised Ternary Grid (revised TG) and expert opinions were applied according to a hybrid algorithm. The Ultimate rules were provided in Fuzzy Inference System format (FIS). In this FIS, proper manufacturing decisions are recommended to the user based on selected competitive priority and also project properties. This paper is the first study in which rules and relations governing the parameters contributing operational strategy in project-based organizations are acquired in a guided integrated process and in the shape of an expert system. Using the decision support system presented in this research, managers of project-based organizations can easily become informed of proper manufacturing decisions in proportion with selected competitive priority and project properties; and also be ensured that theoretical background and past experiences are considered.