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        검색결과 1,258

        481.
        2015.10 구독 인증기관·개인회원 무료
        The longevity and fecundity of Naranga aenescens adult were investigated at temperatures of 15.0, 17.5, 20.0, 22.5, 25.0, 27.5, 30.0, and 32.5°C. Adult longevity was influenced by temperature but there was no temperature effect of fecundity. Longevity decreased with increasing temperature: it was highest at 15°C (22.2 ± 3.51 days) and lowest at 32.5°C (6.2 ± 0.32 days). Total fecundity was highest at 25°C (1693 eggs) and lowest at 15.0°C (1115 eggs). The oviposition period was longest at 20°C (8.8 ± 0.57 days) and shortest at 32.5°C (4.1 ± 0.21 days). The oviposition model presented in this study consisted of two reproductive components (total fecundity and age-specific oviposition rate) and a survival component (age-specific survival rate). The relationship between adult developmental rate and temperature was described by the Logan 6 model (r2=0.98, p<0.0001).The age-specific survival rate was explained by a exponential function (r2=0.98, p<0.00001). The age-specific cumulative oviposition rate was described by the two-parameter Weibull function (r2=0.95, p<0.00001). Temperature-dependent fecundity was estimated using the Briere-2 model (r2=0.91, p<0.0125). Daily egg production of N. aenescens in relation to adult age and temperature was estimated.
        482.
        2015.10 구독 인증기관·개인회원 무료
        The Citrus Leafminer (CLM) larvae creates shallow tunnels in leaves of citrus (orange, mandarins, lemons, grapefruit, etc) and commonly attacks citrus young leaves. They spread almost worldwide (North America, Asia, Australia, etc) and difficult to control by chemicals due to their small size and their behavior of leaf rolling. Due to difficult of managing, our interest is preparing pheromone to control; Z7Z11-16;Al is known as the sex pheromone of this species in Japan. While blending Z7Z11-16;Al and Z7Z11E13-16;Al (3:1 ratio) is known as the pheromone of this insect in North America. Even though commercialized and mass produced already in overseas, there had been almost no report in Korea about synthetic studies and field screening results. The control of the regio-isomers is very important in this kind of pheromone synthesis. Our strategy is the regio-selective Wittig olefination reaction between E-pent-2-enyl(triphenylphsphonium)bromide (phosphonium salt) and the counterpart aldehyde using sodium hexamethyldisilazide (NaHMDS) as a base. All the spectroscopic data (1H, 13C, GC-Mass, etc) are nicely matched with the previously reported values. The field screening in the Jeju island is currently ongoing and will be reported.
        483.
        2015.10 구독 인증기관·개인회원 무료
        More Roller-compacted concrete (RCC) is a dry concrete consisted of same materials as conventional concrete with different proportioning which requires compaction effort in order to reach its final form. Thus, both hydration and aggregate interlock play important roles in its strength augmentation. Flexural strength, an important factor in pavement design and fatigue cracking resistance, can be difficult to be obtained at in-situ and may be subjected to high variability. Even though its compressive strength is relatively high compared to conventional concrete with similar binder content, the relationship between compressive strength and flexural or tensile strength were not well defined. The goal of this research is to compare the relationship between compressive strength and flexural strength as well as the relationship between compressive strength and splitting tensile strength of RCC with those of conventional concrete using various equations suggested in other researches and also to determine new regression equations for estimating RCC’s flexural and splitting tensile strength. The positive result of RCC’s flexural strength was found; it was higher than majority of predicted values from conventional concrete for the same compressive strength. In contrast, RCC’s splitting tensile strength was relatively low compared to that of conventional concrete for the same compressive strength. Power equations were learned to be suitable for relationship between compressive and flexural strengths as well as relationship between compressive and splitting tensile strengths.
        484.
        2015.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The high plateaus in west China may provide suitable sites for astronomical observations with the institute's middle-range telescopes and possibly with larger telescopes. Under China-Japan collaborations for site survey in west China, we have been conducting searches for good sites and monitoring their characteristics over several years. As recent results of our site survey show, sites in west Tibet are revealed with a high possibility of good astronomical observations. Weather characteristics at Gar in Ali, Tibet, show its high clear-sky ratios, especially in winter, com- parable to Mauna Kea, Hawaii. But it has some wind problem in winter, where stronger wind speeds, over 20m/sec, occur frequently even though the sky is clear. To find calmer sites, we have conducted numerical simulations for the Ali area using the Japan Meteorological Agency NonHydrostatic Model. We have found another site, named ZoZo Hill, near Gar. We will continue to monitor the Gar site to clarify weather characteristics over the whole year and hopefully start to negotiate for site monitoring at ZoZo Hill this year.
        3,000원
        485.
        2015.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Polarbear is a ground-based experiment located in the Atacama desert of northern Chile. The experiment is designed to measure the Cosmic Microwave Background B-mode polarization at several arcminute resolution. The CMB B-mode polarization on degree angular scales is a unique signature of primordial gravitational waves from cosmic in ation and B-mode signal on sub-degree scales is induced by the gravitational lensing from large-scale structure. Science observations began in early 2012 with an array of 1,274 polarization sensitive antenna-couple Transition Edge Sensor (TES) bolometers at 150 GHz. We published the first CMB-only measurement of the B-mode polarization on sub-degree scales induced by gravitational lensing in December 2013 followed by the first measurement of the B-mode power spectrum on those scales in March 2014. In this proceedings, we review the physics of CMB B-modes and then describe the Polarbear experiment, observations, and recent results.
        3,000원
        486.
        2015.09 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        In photovoltaic power generation where minority carrier generation via light absorption is competing against minority carrier recombination, the substrate thickness and material quality are interdependent, and appropriate combination of the two variables is important in obtaining the maximum output power generation. Medici, a two-dimensional semiconductor device simulation tool, is used to investigate the interdependency in relation to the maximum power output in front-lit Si solar cells. Qualitatively, the results indicate that a high quality substrate must be thick and that a low quality substrate must be thin in order to achieve the maximum power generation in the respective materials. The dividing point is 70 μm/5 × 10−6 sec. That is, for materials with a minority carrier recombination lifetime longer than 5 × 10−6 sec, the substrate must be thicker than 70 μm, while for materials with a lifetime shorter than 5 × 10−6 sec, the substrate must be thinner than 70 μm. In substrate fabrication, the thinner the wafer, the lower the cost of material, but the higher the cost of wafer fabrication. Thus, the optimum thickness/lifetime combinations are defined in this study along with the substrate cost considerations as part of the factors to be considered in material selection.
        4,000원
        487.
        2015.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        We identify a strong lensing galaxy in the cluster IRC 0218 that is spectroscopically confirmed to be at z = 1:62, making it the highest-redshift strong lens galaxy known. The lens is one of the two brightest cluster galaxies and lenses a background source galaxy into an arc and a counterimage. With Hubble Space Telescope (HST) grism and Keck/LRIS spectroscopy, we measure the source redshift to be zS = 2:26. Using HST imaging, we model the lens mass distribution with an elliptical power-law pro le and account for the effects of the cluster halo and nearby galaxies. The Einstein radius is θE = 0.38+0.02-0.01" (3.2+0.2 -0.1 kpc) and the total enclosed mass is Mtot(< θE) = 1.8+0.2 -0.1 X 1011 M⊙. We estimate that the cluster environment contributes ~ 10% of this total mass. Assuming a Chabrier IMF, the dark matter fraction within θE is fChab DM = 0.3+0.1 -0.3, while a Salpeter IMF is marginally inconsistent with the enclosed mass (fSalp DM = -0.3+0.2 -0.5).
        3,000원
        488.
        2015.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In our previous work, we investigated the orbital dynamics of Asteroid 1934 CT (or 1989 AC or 4179 Toutatis) from epoch 2012-Jul-24 (JDE2456132.5) using the Mercury program package. Asteroid 4179 Toutatis has an Earth and Mars crossing orbit with semimajor axis a = 2.5292 AU and eccentricity e = 0.6294, and therefore the perihelion distance is q = 0.9373 AU and the aphelion distance is Q = 4.1211 AU. After more than 300,000 years, asteroid 4179 Toutatis will escape from the Solar System, but during this time, it will have close-encounters with other planets from Venus to Uranus. As a continuation of this project, we investigated its energy changes in each close encounter. We also determine the energy of this asteroid when it escapes from the Solar System. The result is that during its orbital evolution, the energy of this asteroid changes and gives us negative, zero and positive values.
        3,000원
        489.
        2015.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Quinto Edward Jay Mansarate. 2015. “Dichotomizing Ideological Representations in President Benigno Aquino III's October 30th Address”. The Sociolinguistic Journal of Korea 23(2). 65~95. On October 30th 2013, Philippine President Benigno S. Aquino III addressed the Filipino people in a 12-minute televised speech, in which he defended the government's spending program, Disbursement Acceleration Program (DAP), against accusations of it being the President's version of lawmakers' Priority Assistance Development Fund (PDAF) or ‘Pork Barrel.’ This paper examined ideological representations through a systematic discourse analysis of the 19-paragraph, 1851-word speech. In particular, the paper examined lexical choices within the bounds of ‘biased lexical items’ in political discourse (van Dijk 2005) and ‘referential strategy’ (Wodak, De Cillia & Reisigl 1999). Analysis of data pointed to the polarization of pronouns representing ‘US’ and ‘THEM.’ Data also revealed that positive-self and negative-others representations were achieved through the use of two strategies in van Dijk's (1998) ideological square: (i) emphasis of good things about ‘US’ and (ii) emphasis of bad things about ‘THEM.’ These strategies framed the President and his administration under good governance and administration accomplishments, while framing the critics and opposition as enemies of good governance and part of a failed past. The President's discursive choices reinforced the underlying ideological implication, ‘the Disbursement Acceleration Program is not pork barrel.’ The paper closes with some implications for future research. (200)
        7,700원
        491.
        2015.06 구독 인증기관·개인회원 무료
        The purpose of this research is to study the evolution of the price of Burgundy wines and to try to identify the reasons for such an evolution. Land prices, rent prices and wine prices in Burgundy will be analysed over the last decades. In terms of results, the price of wine in Burgundy has been observed to rise drastically in recent years as well as the evolution of land and rent prices. A better comprehension of price variations could help wine companies manage their long term profitability, especially if land were considered as an investment (and therefore, part of the company). As a recommendation, marketing tools but also training should be used by craftsmen to build, promote and distribute strong brands in order to remain on the market but also to attract major agents and importers and be distributed worldwide.
        492.
        2015.06 구독 인증기관 무료, 개인회원 유료
        The purpose of this paper is to empirically examine factors affecting customers’ intention to buy apparels through mobile apps. The proposed model was evaluated using survey data collected from 304 mobile app users and assessed by structural equation modeling. Our study contributes to a theoretical understanding of mobile apps usage.
        4,000원
        493.
        2015.06 구독 인증기관 무료, 개인회원 유료
        Introduction In 2011, consumers spent $ 6.6 billion on certified fair-trade products, for a 12% increase worldwide (Thompson, 2012). Fair-trade is a social movement aiming to set fair prices for products, alleviate poverty, and assist producers and workers marginalized by the traditional economic model. Online stores have emerged as an effective marketing channel for fair trade products due to their ability to inform and reach a broad range of customers for very low cost. And this trend piques our interest in examining fair trade online stores. How do online fair trade retail stores rate in terms of usability? This is important because usability constitutes a key factor of online store quality. Usability refers to the perceived ease of navigating and/or making purchases through the retail website (Flavian et al., 2006). Previous studies find evidence that the richness of information related to products, culture, and artisans are criteria for success in fair-trade business (Lee & Littrell, 2005). Incorrect and/or low quality information undermine consumer interest in ethical products and subsequently, reduce credibility of fair trade retailers and their products (Carrigan & Attalla, 2001; Maignan & Ferrell, 2004). Usability is a way to ensure information is presented in a manner that will engender the trust of consumers. Trust is defined as the willingness of a consumer to be vulnerable to the actions of a retailer based on the expectation that the retailer will perform a particular action (cf. Mayer et al., 1995). Trust is known to be an antecedent in building relationships (Rotter, 1971). Fair trade retailers operating online stores must consider two types of trust. One type is customers’ trust toward fair trade retailers. To create such trust, fair trade retailers must convey that the marginal price differences between fair trade products and commercial products will be used to help producers (Castaldo et al, 2009), and must be transparent in communicating the operational processes underlying fair trade retailing. The other type of trust is related to the website and reflects skepticism about completing transactions online (Gefen & Straub, 2003). Compared to a brick-and-mortar store, online customer’s trust is critical since a customer’s perceived risk in purchasing goods online can be reduced by trust (Ha & Stoel, 2008; Pavlou, 2003). Lack of social presence for an online store impedes development of a customer’s trust toward the retailer (Gefen & Straub, 2003). Building upon the existing literature, we posit that a low level of usability, due to its role in developing online interactivity and engagement, will lead to lack of trust building, which is critical in promoting the sale of fair trade products. The purposes of this study are (1) to propose how usability, interactivity, and engagement can improve trust building, and (2) to provide empirical evidence of the lack of usability, interactivity, and engagement in current fair trade online stores. Website usability allowing consumer interactivity and engagement is an essential website attribute for formulating trust. Thus, the goal of this study is to provide suggestions for competitive e-retailing strategies for fair trade retailers based on results of a benchmarking study comparing websites of commercial and fair trade retailers. Literature Review Website Usability. Usability is created through the use of advanced website attributes that allow greater involvement of customers. Website usability not only influences consumer attitudes but also trust toward the website or company (Childers et al, 2001; Roy et al., 2001). Recently, scholars have suggested usability is related to engagement (Quesenbery, 2003). For instance, insufficient usability may be a factor in failing to engage consumers with the website; conversely, engagement can be sustained when attributes of usability meet user needs (O’Brien & Toms, 2008). Website usability may have a direct impact on enhancing interactivity. Interactivity. Interactivity refers to the extent to which users can participate in communication, user control, and entertainment (cf. McMillan & Hwang, 2002). Based on this notion, two types of interactivity within the e-commerce context are examined: (1) website interactivity concerns the website design and attributes enabling consumer interaction with the site to make decisions and personalize content (Merrilees & Fry, 2003), and (2) social interactivity promotes ‘consumer-to-consumer’ and ‘consumer-to-company’ communicative interactions within virtual social space provided by the retailer (Chan & Li, 2010; Nambisan & Watt, 2011). The outcomes of interactivity are two-fold. First, interactivity promotes customer engagement with brands (Ha & James, 1998). Consumers’ interaction with other consumers and the company (via social interactivity) and navigating and personalizing the website (via website-interactivity) create psychological engagement with the company. Second, interactivity entices consumers to acquire greater amounts of information from the website, which subsequently has a positive impact on trust towards the online retailer (Ballantine, 2005; Chen et al, 2005). Consistent with this view, Merrillees and Fry (2003) claim that the level of perceived interactivity is a predominant determinant in constructing trust in the online domain. Engagement. Consumer engagement behavior refers to the creation of an enduring and meaningful relationship between the company and the consumer (Doorn et al. 2010). Consumer engagement involves a highly interactive and experiential process. Highly engaged consumers integrate product knowledge and exchange information with other consumers (Borle et al. 2007). Engagement behaviors facilitate consumer trust towards products and the company (e.g. Pigg & Crank, 2004). Social engagement, the spontaneous information exchange among users, can justify one’s purchase decision. The consumer-generated content becomes a more trustworthy source of knowledge than the information promoted by the retailer (Chan et al., 2010). The relationship between interactivity and engagement is reciprocal. Consumers highly involved in engaging with others are likely to utilize more website attributes promoting interactivity. Method The data for this study were collected from 28 commercial apparel retailers and 22 fair trade apparel retailers based in the US. The 22 fair trade retailers consisted of 13 for-profits and 9 non-profits. The sample was selected based on previous studies (i.e., Lee, Geistfeld, & Stoel 2007; Halepete & Park, 2006; Park & Stoel, 2002), trade publications, and a Google search. A binary measurement instrument was employed to categorize website content as either ‘available’ or ‘not available’ on both the commercial and fair trade store websites. In order to minimize any bias occurring from subjective evaluation of website content, two graduate students separately coded the data, and compared coding sheets. Differences were discussed until agreement was reached. Frequency counts were used to describe the availability of website and social interactivity related content. Chi-square analysis was used to identify statistically significant differences between commercial and fair trade online retailers. Results To assess website interactivity, we examined six attributes that facilitated convenience for consumers in locating information or customizing website content. They included (1) search engine navigation, (2) picture enlargement, (3) matching item suggestion, (4) log-in to own personal account, (5) styling suggestions by other consumers, and (6) picture rotation function. Analysis (chi-square) confirmed significant differences in availabilities of search engine navigation, picture enlargement, matching item suggestion, and log-in to own personal account. Interestingly, only two commercial retailers and one fair trade company were equipped with a product or styling suggestion technology. The use of 360-degree view of products was not used by any of the sample companies [commercial retailers (n=0); fair trade retailers (n= 0)]. To assess social interactivity, we analyzed attributes that facilitate relationships. The attributes are categorized into the following dimensions: 1) social media utilization, 2) social commerce, and 3) customer engagement. We examined the following five attributes constituting social interactivity: 1) existence of social media sites including Facebook, Twitter, and YouTube, 2) consumer Facebook sharing, 3) link to other retailers’ websites, 4) online chatting, and 5) consumer review section. Analysis showed the differences between commercial and fair trade retailers were all statistically significant. Conclusion & Implications This study examined the differences between commercial and fair trade retailers to evaluate the current status of fair trade retailers in terms of interactivity and engagement in managing their websites. We identified attributes where fair trade retailers lagged and these could hinder trust development with consumers. We address three implications applicable to fair trade retailers, and more broadly, retailers selling ethical products. First, website interactivity attributes that provide effective ways to communicate product, store and fair trade information are critical when the concept of fair trade is still unknown to a large segment of consumers. The focus of fair trade retailers should remain not only in delivering creative and high quality products, but also well-managed websites that can attract, educate, and engage consumers via interesting cultural products (Lee & Littrell, 2006). In doing so, advanced website interactivity attributes that enhance the convenience of online shopping, increase ease of navigation, and ensure competent delivery of information should be incorporated in fair trade company websites. Second, the lack of use of social media by fair trade retailers is concerning. Word-of-mouth (WOM) communication is innate to social media, and encourages spontaneous communications among consumers. Utilizing various social media platforms is an efficient way to generate consumers’ voluntary exposure to fair trade products at a minimal cost. Encouraging customers to share WOM would be a natural path to increase engagement, and spread the concept of fair trade. Moreover, when a consumer spreads fair trade product information on his or her social media networks, the people who will be viewing the information have already established a relationship with him or her, and such messages are perceived to be more credible than information shared by the company or unknown strangers (Chu & Kim, 2011). In addition, virtual space inviting consumer feedback on the company website or social media sites can stimulate interactions with unknown consumers. The third person point of view by unknown consumers compared to fair trade retailers may be perceived to be unbiased, and consequently accepted as more trustworthy. Third, the concept of social commerce, referring to the practice of featuring links of other company websites on one’s own website, is critical to enhance the overall visibility and traffic to fair trade e-commerce sites. The unique feature distinct to fair trade retailers is their shared use of ‘certified fair trade’ labeling. While commercial apparel retailers promote their brand to generate corporate profits, the vision of fair trade retailers is to promote their products to bring social welfare. Thus, the union of fair trade retailers and collective initiatives can create synergy. Integrating the concept of social commerce with collective initiatives is one practical way to achieve this objective. Considering this common denominator across fair trade retailers, the use of fair trade labeling and links to other fair trade retailers on the website will support greater exposure to potential consumers and engagement with diverse fair trade retailers. Two major challenges fair trade retailers face are that: (1) their small size fails to generate economies of scale, and (2) due to the absence of national chains or organizations managing fair trade stores, brick-and-mortar fair trade stores are not evenly distributed geographically. Therefore, an interactive and engaging online presence for fair trade retailers is critical in resolving these limitations. It is a way to reach a large segment of consumers who do not reside around brick-and-mortar fair trade stores. We hope that interactivity and engagement will increase consumer exposure to fair trade retailers and ultimately increase fair trade sales.
        4,000원
        494.
        2015.06 구독 인증기관 무료, 개인회원 유료
        This study proposes the use of fashion as a tool of psychotherapy for individuals feeling social and psychological pressure due to society’s emphasis on appearances. The concept of fashion therapy was re-established, and theories (cognitive behavioral therapy, person-centered therapy, solution-focused brief therapy) founded on art therapy were introduced. Based on past research, this study developed a process for fashion therapy.
        4,000원
        495.
        2015.06 구독 인증기관 무료, 개인회원 유료
        Network analysis of keywords relevant to three fashion trading areas, Garosu-gil, Dongdaemun, and Itaewon in Seoul, Korea, revealed that ‘associated industry’ is an important factor along with ‘design’ and ‘brand’. Additionally, distinct attributes of each commercial district can serve as differentials to attract consumers; thus, they are necessary factors in order to develop as fashion trading areas.
        4,000원
        496.
        2015.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The efficacy of chemical disinfectants is reduced owing to the inactivation of active ingredients after dilution. This study investigated the effect of time on the efficacy of six different disinfectants, after dilution, against avian influenza virus. When used at the recommended concentration, most disinfectants showed efficacy at a high concentrations in the presence of organic materials immediately after dilution, while sodium dichloroisocyanurate-based products, after dilution, showed reduced efficacy over time at low concentrations in the absence of organic materials. Most disinfectants were neutralized by organic materials; however, this could be compensated for by increasing the product dosage. For successful decontamination in farms, disinfectants should be used at high concentrations in accordance with the manufacturers’ recommendations. Furthermore, the presence of organic materials must be taken into consideration, and diluted disinfectant solution should be prepared no more than a day before use.
        3,000원
        497.
        2015.06 구독 인증기관 무료, 개인회원 유료
        This study explains an agricultural mobile commerce case using Oauth Based Real-Time Information Sharing Technique according to the growth of the agricultural e-commerce market. Considering the characteristics of the agricultural market, it can confirm differential values with the existing agricultural mobile commerce market according to the functions and characteristics of its technique. We compare variables for introducing agricultural mobile commerce with the existing mobile commerce. Trust through information sharing with real-timefarming diaries, suitability and perceived ease of use variables are positively influenced, but influence on completeness and authority of information variables are relatively insufficient. Through this, we explained differential values of agricultural mobile commerce and suggested an applicable business model.
        4,000원