• Membrane and Water Treatment
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• v.10 no.4
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• pp.251-257
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• 2019

Fabricating hydrophobic porous membrane is important for exploring the applications of membrane distillation (MD). In the present paper, poly(vinylidene fluoride) (PVDF) hollow fiber membrane was modified by coating polydimethylsiloxane (PDMS) on its surface. The effects of PDMS concentration, cross-linking temperature and cross-linking time on the performance of the composite membranes in a vacuum membrane distillation (VMD) process were investigated. It was found that the hydrophobicity and the VMD performance of the PVDF hollow fiber membrane were obviously improved by coating PDMS. The optimal PDMS concentration, cross-linking temperature and cross-linking time were 0.5 wt%, $80^{\circ}C$, and 9 hr, respectively.

• Journal of the Korean Society of Clothing and Textiles
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• v.34 no.1
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• pp.27-39
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• 2010

In addition, an intense competition depending on the diversity of consumer demands women's clothing brands show changes in market organization such as diversification of the circulation market and general market depression in this rapidly changing fashion environment. Companies tend to use fashion VMD (a marketing-strategic approach) as a differentiation method to create a fashion brand shop image as brand differentiation becomes difficult due to generalization of techniques. This study analyzes forms and types of VMD recognized by consumers within this marketing communication environment and Q methodology was adapted to analyze the subjective internal order of individuals. First, a set of stimuli that presented the brand name and another without it were prepared (two sets in total) to examine the effects in the presentation of the brand name. Stimulants with the brand name were presented to the subjects by the same method after an experiment through stimuli without the brand name presented. As a result, VMD recognition factors were classified into 4 Q factors in cases of stimuli without brand names and 2 factors in cases of stimuli with brand names. This indicates that among brand functions, the role of simplifying information management and grasping the thoughts of consumers was applied. This study has a practical value of presenting VMD directions of each brand image based on the factors discovered.

• Asian Pacific Journal of Cancer Prevention
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• v.16 no.18
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• pp.8307-8311
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• 2016

Lung cancer is one particular type of cancer that is deadly and relatively common than any other. Treatment is with chemotherapy, radiation therapy and surgery depending on the type and stage of the disease. Focusing on drugs used for chemotherapy and their associated side effects, there is a need to design and develop new anti-lung cancer drugs with minimal side effects and improved efficacy. The pharmacophore model appears to be a very helpful tool serving in the designing and development of new lead compounds. In this paper, pharmacophore analysis of 10 novel anti-lung cancer compounds was validated for the first time. Using LigandScout the pharmacophore features were predicted and 3D pharmacophores were extracted via VMD software. A training set data was collected from literature and the proposed model was applied to the training set whereby validating and verifying similar activity as that of the most active compounds was achieved. Therefore pharmacophore develoipment could be recommended for further studies.

• Fashion & Textile Research Journal
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• v.16 no.3
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• pp.386-395
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• 2014

This study was to identify underlying dimension of marketing strategy, and to examine effect of the marketing strategic factors on store affect, brand attitude, and brand loyalty in global and domestic SPA brands. Based on pilot study, four SPA brands of which consumers were most aware were selected: Korean SPAs (e.g., Codes-Combine, Basic House) and global brands (e.g., Zara and Uniqlo). A self-administered questionnaire was developed based on literatures. By using intercept survey, 421 respondents were obtained from consumers shopping at the selected SPA retail stores located in cities (Seoul, Daejon, Chongju) in Korea. Result showed that SPA brand marketing strategy consisted of four factors: Product differentiation, store location, in-store VMD, and price value. The marketing strategic factors had partially significant effects on brand attitude, store affect and store loyalty. However, there was significant differences in those effects between global and Korean SPA brands. Specifically, the effect of in-store VMD on brand attitude was higher in Korean SPA brands, whereas the effect of price value was higher in global SPA brand. Also, the price value was significant predictor of store affects in global SPAs, while in-store VMD was significant predictor of store loyalty in Korean SPA brands. This study discussed a managerial implication for creating brand attitude and emotional responses, which obtains comparative advantages in the competing marketplace.

• Membrane and Water Treatment
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• v.10 no.4
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• pp.287-298
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• 2019

Lotus leaf has a special dual micro and nano surface structure which gives its highly hydrophobic surface characteristics and so-called self cleaning effect. In order to endow PVDF hollow fiber membrane with this special structure and improve the hydrophobicity of membrane surface, PVDF hollow fiber composite membranes was obtained through the immersion coating of poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) dilute solution on the outside surface of PVDF support membrane. The prepared PVDF composite membranes were used in the vacuum membrane distillation (VMD) for the desalination. The effects of PVDF-HFP dilute solution concentration in the dope solution and coating time on VMD separation performance was studied. Membranes were characterized by SEM, WCA measurement, porosity, and liquid entry pressure of water. VMD test was carried out using $35g{\cdot}L^{-1}$ NaCl aqueous solution as the feed solution at feed temperature of $30^{\circ}C$ and the permeate pressure of 31.3 kPa. The vapour flux reached a maximum when PVDF-HFP concentration in the dilute solution was 5 wt% and the coating time was kept in the range of 10-60 s. This was attributed to the well configuration of micro-nano rods which was similar with the dual micro-nano structure on the lotus leaf. Compared with the original PVDF membrane, the salt rejection can be well maintained which was greater than 99.99 % meanwhile permeation water conductivity was kept at a low value of $7-9{\mu}S{\cdot}cm^{-1}$ during the continuous testing for 360 h.

• Membrane and Water Treatment
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• v.8 no.3
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• pp.293-310
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• 2017

An ultrasonic assisting vacuum membrane distillation (VMD) system was designed to promote the heat and mass transfer in membrane distillation (MD) process. Both the effects of operating conditions and ultrasonic parameters to permeation flux in this process were investigated; the heat and mass transfer mechanism was also being discussed in this paper. The results showed that the performance of VMD process was improved significantly by ultrasonic assisting. The permeation flux was boosted at a certain feed solution temperature, pressure at permeate side and feed solution velocity whether or not to PP and PTFE. The results also indicated that ultrasonic power and frequency also was the key factor affecting the mass and transfer efficiencies. The feed side transfer coefficient ($K_f$), corresponding to ultrasonic power ($K_f=4.406-0.026{\times}P+7.824{\times}10^{-5}{\times}P^2$) and ultrasonic frequency ($K_f=0.941+0.598{\times}f-0.012{\times}f^2+6.283{\times}10^{-5}f^3$), was obtained and employed in the modeling of ultrasonic assisting VMD process. The modeling results showed that the calculated value of $K_f$ aligned with experimental results well. Both variations of temperature polarization coefficient (TPC) and concentration polarization coefficient (CPC) were studied based on the obtained data. The results showed that both TPC and CPC were improved obviously by the ultrasonic parameters.

• Korean Institute of Interior Design Journal
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• v.22 no.6
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• pp.220-232
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• 2013

Ever-evolving diverse communication tools bring numerous changes and improvements into the lives of humans. It is extremely important to provide visual information when communicating with consumers in the commercial arena because humans acquire over eighty percent of the information around them through sense of sight. One cannot compete with just sheer quality in today's world. Therefore, the applications of digital technology in the visual merchandising became crucial, for it can dramatically improve the market value. Among these applications is digital signage, a new media for esthetic experience. I strongly believe that this would be a new marketing tool for the brand's distinctive and unique publicity. This research has been conducted in order to find out how the fast-growing digital signage, defined by the contents, has become not just a mere digital video clip but an esthetic merchandising tool that can produce various effective marketing strategies; and to discover the characteristics that this application has brought out in the visual merchandising field of fashion stores' global SPA brands. Based on the market case study, analyses have been made for the digital signage types and strategies regarding the visual merchandising expressive elements and for the effects the digital signage application will have on publicity. According to the results, the digital signage has proven to be informative, diversely applicable and contributes greatly to the increase in sales and to the improvement of company and brand image. Thus, it is much more than just a media tool for advertisement.

• Journal of the Korean Society of Costume
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• v.16
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• pp.211-220
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• 1991

The purpose of this study is to examine the effect of the fashion shop display on the clothing purchase made by the sample of 369 adult women living in Seoul area. In this study, the interest and the effect of the display are investigated through such factors of demographic variables as each individual's age, educational career, vocation, average family income a month, and marriage status. And the relationship is also examined between the person's interest paid on the display and the clothing attitude related variables of fashion follow tendency, individuality, and the way of practical economy. An additional examinations are performed in the first reactive factor to be considered at the time of the clothing purchase, and the interrelation between the discontent after purchase and the effect of display before purchase. The major findings of this research, thus, can be summarized as following: 1. Demographic variables of women reflect differences in their interests toward display and accordingly the variety of the display effect as well. Less interest and effect are caused by the effort of display for the women in their senior age. However, a group of the character women and young college women pay relatively more attention to the display and give more effect to the purchase. The examination shows alsp that the unmarried and better-off and better-educated are more sensitive to the effect of the display. 2. The higher is the individuality and the fashion follow tendency, the stronger revealed the interest in the display, while the economic women have less interest in it. 3. The first factor considered at the time of purchase is not absolutely affected significantly by the degree of the display effect in real purchasing act. 4. The discontent after purchase is not related with how much the degree of display effects in the act of real purchase.

• Journal of Biosystems Engineering
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• v.21 no.2
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• pp.117-122
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• 1996

Droplet sizes produced from a mist blower should be adequate to get highly biological effects with a reasonable level of work performance. However the droplet sizes from the conventional nozzles of the mist blower were around VMD 95 to 469$\mu$ which were relatively large as compared with the recommended droplet sizes in liquid flow rate of 17.2 m$/ell$s with air flow rate of 16660$m^3$/s on the maximum travel distance of about 4.0 m. The velocity of air stream at the point where two fluids, air and liquid, impact each other, was tried to maximize as much as possible in order to enhance the atomization performance of a newly designed twin fluid nozzles with the same or better level of performance of the conventional mist blower, The configuration of nozzle orifice should be designed to enlarge the contact area between air and liquid to enhance the atomization.

• Journal of the Korean Society of Clothing and Textiles
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• v.33 no.3
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• pp.500-510
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• 2009

The purpose of this study was to examine the effects of facing plan on store image and preference of young casual fashion store. The subjects were 545 male and female university students in Chungnam province. The measuring instruments were 7 stimuli manipulated by facing plan, an important VMD element, and self-administrated questionnaire consisted of store image, store preference and subject's demographic characteristics. The data were analyzed by t-test, ANOVA and Duncan's multiple range test, using SPSS program. The results were as follows. First, facing type significantly affected consumer' store image; folded type had more neat and elegant image than other facing types, and face out type had most comfort image, whereas sleeve out type had discomfort image. Second, arrangement of facing types also affected store image; style arrangement had more sophisticated image than color arrangement in sleeve out type, and vertical and horizontal arrangement had more neat, sophisticated, attractive and comfort image than separate arrangement in folded type. Third, facing type affected store preference; folded type showed higher store preference than sleeve out type. Forth, arrangement of folded type affected store preference; vertical and horizontal arrangement showed higher store preference than separate arrangement. Fifth, store image and preference were different by subject's sex; male subjects perceived style arrangement as more elegant, characteristic and attractive image, and showed higher store preference than female subjects on separate arrangement of folded type.