This study examines how advertising can be used by premium private labels to develop perceived luxuriousness and, in turn, purchase intention. The findings suggest perceived image and quality relative to regular private labels and a leading national brand as well as store-brand image congruity as key factors and support the store-type effect. Introduction Private labels (PLs) are receiving increased attention in line with their significant growth (Schnittka, 2015). Braak, Geyskens, and Dekimpe (2014) pointed out the evolving trend of more PLs offering high quality at a high price in comparison to their low-quality, low-price heritage. Among multiple tiers of PLs, PPLs exclusively aim at a premium tier of the market and try to offer the value comparable to that of top-tier NBs (Jost 2014). Acknowledging differentiated natures of PPLs, this paper analyzes what advertising strategies make consumers perceive a PPL to be luxurious and in turn, increase purchase intention. Cue utilization theory and categorization theory are used as a basis for hypotheses. Our research is an effort to shed light on adequate design of the advertising message for the successful introduction of a PPL. Theoretical Background Premium Private Label and Perceived Luxuriousness For a PPL, being able to offer outstanding value as compared to top-tier NBs is a critical issue (Geyskens, Gielens & Gijsbrechts 2010). To investigate whether a PPL is successfully positioned, we suggest the construct of perceived luxuriousness as a key variable. We define a brand's luxuriousness as its ability to satisfy multifaceted needs of consumers with its products which is not limited to functional needs (Lee, Ko, Kee & Kim, 2015), through five value dimensions (Vigneron & Johnson, 2004). Consequently, we employ the brand luxury index (BLI) to measure perceived luxuriousness (Vigneron & Johnson, 2004). Cue Utilization Theory According to cue utilization theory, when making purchases, consumers use diverse extrinsic and intrinsic cues, and make the assumption that such cues will help them make the most reasonable purchase decision (Richardson, Dick & Jain, 1994). Referring to cues, consumers decide to buy the product only if it is perceived as a better choice than the alternatives in terms of overall value that it conveys. These cues are often displayed and reinforced via advertising (Yi, 1993). Categorization Theory According to categorization theory, when exposed to advertising messages for a new brand, consumers are expected to call up information available in memory that is classified into categories (Carrillat, Harris, & Lafferty, 2010). Punj & Moon (2002) demonstrated that a successful strategy for new brands is to associate itself with a successful existing brand to be included in the consideration set while differentiating itself from other brands. Hypotheses Development Image Similarity Perceived similarity between brands and products has been discussed at various levels and scopes. It has been illustrated that shared physical attributes (Aaker & Keller, 1990) and shared abstract image (Park, Milberg & Lawson, 1991) between product lines moderate the probability of being perceived as similar by consumers. Considering the disparate positions between PPLs and RPLs, we suggested that RPLs are useful as a disparate option that may in turn emphasize the premium position of a PPL (Palmeira & Thomas, 2011). H1a. Image similarity between a PPL and a RPL, as reinforced by advertising, will have a negative effect on the perceived luxuriousness of the PPL. If a PPL can associate itself with the experiential value of a high-positioned NB, it is more likely that the PPL will be perceived as luxurious by signaling comparability (Sayman et al., 2002). H1b. Image similarity between a PPL and a NB, as reinforced by advertising, will have a positive effect on the perceived luxuriousness of the PPL. If the different positions of a RPL and a PPL are not perceived by consumers, consumers might judge the PPL as simply a similar but expensive option and would not be willing to purchase it (Huang & Huddleston, 2009). H2a. Image similarity between a PPL and a RPL, as reinforced by advertising, will have a negative effect on the purchase intention for the PPL. Closer associations between a PPL and a top-tier NB built through advertising lead to enhanced familiarity with the PPL and perceptions of reduced risks (Erdem, Zhao & Valenzuela, 2004). H2b. Image similarity between a PPL and a NB, as reinforced by advertising, will have a positive effect on the purchase intention for the PPL. Quality Superiority Perceived quality is defined by Aaker (1991) as: “the customer’s perception of the overall quality or superiority of a product or service with respect to its intended purpose, relative to alternatives”. Consumers’ abstract beliefs regarding the product’s quality can be deduced from “credence quality attributes” (Ophuis & Trijp, 1995). The quality of products is evaluated relatively, compared with alternatives. Nueno and Quelch, (1998) pointed out that there are a few characteristics shared by premium brands, and excellent quality is one of them. H3a. Quality superiority of a PPL compared to RPL, as reinforced by advertising, will have a positive effect on the perceived luxuriousness of PPL. H3b. Quality superiority of a PPL compared to NB, as reinforced by advertising, will have a positive effect on the perceived luxuriousness of PPL. According to Sethuraman, Tellis, and Briesch (2011), consumer perceptions of quality of a PL are evaluated based on quality differentials and play a dominant role when consumers make purchase decisions. Indeed, the perceived quality differential between a PL and a NB has been found to influence the share of the PL (Erdem et al., 2004). H4a. Quality superiority of a PPL compared to a RPL, as reinforced by advertising, will have a positive effect on the purchase intention of the PPL. H4b. Quality superiority of a PPL compared to a NB, as reinforced by advertising, will have a positive effect on the purchase intention of the PPL. Image Congruity between a Store and a PPL At the individual level, a generalized store image is determined by each consumer’s beliefs about retailer-specific attributes (Lee & Hyman, 2008). If the positive store image can be transferred through a number of positive associations between the store image and a PL, it will help consumers evaluate a newly encountered PL more favorably (Collins-Dodd & Lindley, 2003). As Dubois, Laurent, and Czellar (2001) demonstrated, consistent value shared between a parent brand and an extension will further strengthen the luxurious position. H5a. Image congruity between a store and a PPL will have a positive effect on the perceived luxuriousness of the PPL. Furthermore, with congruity consumers will see a brand which maintains the standards and preserve its essence as authentic and are likely to form positive responses toward a brand (Choi, Ko, Kim & Mattila, 2015). Lee and Hyman (2008) illustrated that the congruity between beliefs about a store and a PL would lead to a relatively favorable attitude toward a PL product. H5b. Image congruity between a store and a PPL will have a positive effect on the purchase intention of the PPL. Perceived Luxuriousness and Purchase Intention Sethuraman et al. (2011) illustrated that both quality and non-quality values matter in purchase decisions of a PL. For a PPL aiming at signaling an outstanding position, representations of added value are critical to form purchase intentions (Fionda & Moore, 2008). Thus: H6. Perceived luxuriousness of a PPL will have a positive effect on the purchase intention of the PPL. Store type Effect Consumers evaluate retailers differently and their subjective evaluation of the retailer is also expected to affect evaluations of products sold in the retailer (Grace and O’cass, 2005; Pappu and Quester 2008). The more upscale image and positioning of department stores are regarded to allow products they sell to be perceived as luxurious through more diverse appeals. In turn, purchase intentions are to be facilitated with ease, relatively. Proposition 1: According to store type, relative perception of luxuriousness of a PPL will be different. Proposition 2: According to store type, relative purchase intention of a PPL will be different. Methods Experiments were conducted among undergraduate-level students (aged 20-29) at a large Korean university, as they have relatively common traits and increasing experience with private labels (Trendmonitor, 2015). A total of 339 self-administered questionnaires were distributed, out of which 324 were used for analysis: 166 for department stores, 158 for hypermarkets. A purchase scenario of a cashmere sweater as well as an advertisement of the PPL sweater with information about each brand’s product (i.e. the material, the manufacturer, the distributor, and the advertisement) was given. For robust results, the experiment was conducted via two media types, online and paper. Analysis and Results Structural Model Testing We used structural equation modeling (AMOS 21) to test the proposed theoretical framework and propositions (see Figure 1). All estimates indicate an acceptable fit. Individual Hypothesis Testing The results indicate that image similarity between a PPL and a RPL negatively influences the perceived luxuriousness of the PPL (supporting H1a), but image similarity between the PPL and a NB positively influences the perceived luxuriousness of the PPL (supporting H1b). Although image similarity between a PPL and a RPL has no direct influence on the purchase intention of the PPL (H2a is rejected), image similarity between the PPL and a NB positively influences the perceived luxuriousness of the PPL (supporting H2b). Quality superiority of the PPL compared to the RPL positively influences both the perceived luxuriousness and purchase intention of the PPL (supporting both H3a and H4a), but quality superiority of the PPL compared to the NB does not have a significant effect (H3b and H4b are rejected). Congruity between the PPL and store is found to influence the perceived luxuriousness of the PPL (supporting H5a) but has no direct influence on the purchase intention (H5b is rejected). Meanwhile, the hypothesized effect of the perceived luxuriousness of PPL on purchase intention is supported (H6). Proposition Testing The data for each store type, department store (n =166) and hypermarket (n=158), was analyzed separately via multi-group analysis to assess store type effects on the modeled relationships. The findings for department stores indicate that the effects of image similarity between a PPL and a RPL on perceived luxuriousness, image similarity between the PPL and a NB on the purchase intention, quality superiority of the PPL compared to the RPL on the perceived luxuriousness as well as the purchase intention, and image congruity between the PPL and the store on the perceived luxuriousness are significant. Meanwhile, the findings for hypermarkets represent that the effects of image similarity between the PPL and NB on perceived luxuriousness and quality superiority of the PPL compared to the RPL on the perceived luxuriousness of the PPL are significant. For both store types, overall perceived luxuriousness turned out to be positively related to purchase intention. Conclusion The findings of this study have implications for a PPL aiming at positioning itself in consumers’ minds as luxurious, vis-à-vis a RPL and a NB. In regard to the perceived brand images, using advertising, efforts to differentiate a PPL from a RPL and to equate a PPL with the top-tier NB appears to be a reasonable strategy. Moreover, using advertising to emphasize superior quality compared to the RPL is likely to be effective whereas to compare it to a NB will not. Also, image congruity between a store and a PPL would allow the PPL to be perceived as luxurious as it aims to be. Furthermore, the results lead to a rationale for disparate strategies between two store types. As a follow-up study, we are planning to examine how direct manipulation of the comparative advertising messages influences consumers’ perceived luxuriousness and purchase intentions of a PPL.

This study employs the resource-based view to understand how product strategy influence export performance. According to the organizational learning perspective, moreover, the ability to manage existing assets and capabilities and the development of new capabilities are arguably among the most relevant innovation success factors. Based on these theoretical backgrounds, a model is proposed to analyze the effects of cost leadership and differentiation strategy on export performance, as well as the moderating effects of exploitative and exploratory innovation capability. Using survey data from Korean exporters, the findings indicate that the cost leadership and differentiation strategy enhance export performance. While exploitative innovation capability strengthens the relationship between cost leadership strategy and export performance, exploratory innovation capability enhances the link between differentiation strategy and export performance. Introduction The trade-off between cost leadership strategy and differentiation strategy is of importance and presents a key challenge to exporters because it is intrinsically related to innovation (Gebauer, 2008; O’Cass et al., 2014). Nevertheless, resources are limited, and firms must make choices in their allocation and determine the extent to which they will emphasize one strategy over another (Danneels, 2007; Lant, Milliken, & Batra, 1992). Although the individual roles of product strategies or innovation capabilities on export performance have attracted considerable attention (e.g., Hortinha, Lages, & Lages, 2011; Lages, Silva, & Styles, 2009; Molina-Castillo, Jimenez-Jimenez, & Munuera-Aleman, 2011), few studies have assessed their integrating impact - that is, the difference in the strengths of the relationships between cost leadership or differentiation strategy and innovation. Drawing on resource based view, we examine how innovation capabilities related with the relationship between cost leadership and differentiation strategies and exporters’ performance. Thus, we consider the moderating role of two distinct capabilities - exploratory innovation and exploitative innovation - on the relationships between product strategies and export performance. Exploratory innovation includes activities aimed to enter new product-market domains, while exploitative innovation activities improve existing product-market domains (He &Wong, 2004). The objectives of this study are to explore (1) impacts of cost leadership strategy and differentiation strategy on export performance, (2) moderating effects of exploitative and exploratory innovation capability on the relationship between product strategy and export performance, and (3) these relationships in the context of Korean exporters. The Korean exporting firms are more concentrated on international markets because of limited size of domestic market (Nugent & Yhee, 2002). These characteristics of Korean exporters are more useful to examine the effect of product strategy and product innovation capability of firms on export performance in international markets. Conceptual Background Product Strategy and Competitive Advantage Porter (1980) argues that a firm can achieve a higher level of performance over a rival in one of two ways: either it can supply an identical product or service at a lower cost, or it can supply a product or service that is differentiated in such a way that the customer is willing to pay a price premium that exceeds the additional cost of the differentiation. A cost leadership strategy is designed to produce goods or services more cheaply than competitors by stressing efficient scale of operation. When a firm designs, produces, and sells a comparable product more efficiently than its competitors as well as its market scope is industry-wide, it means that the firm is carrying out the cost leadership strategy successfully (Campbell-Hunt, 2000). Thus, the primary thing for a firm seeking competitively valuable way by reducing cost is to concentrate on maintaining efficiency through all activities in order to effectively control every expense and find new sources of potential cost reduction (Dess & Davis, 1984). The differentiation strategy provides value to customers with the unique attributes or perceptions of uniqueness, and characteristics of a firm’s product other than cost. The firm pursuing differentiation seeks to be unique in its industry along some dimension that is valued by customers, which means investing in product R&D and marketing (Porter, 1980). Rather than cost reduction, a firm using the differentiation needs to concentrate on investing in and developing such things that are distinguishable and customers will perceive (Gebauer, 2008). Overall, the essential success factor of differentiation in terms of strategy implementation is to develop and maintain innovativeness, creativeness, and organizational learning within a firm (Dess & Davis, 1984; O’Cass et al., 2014; Porter, 1985). Innovation Capability in International Markets A firm’s ability to compete in the long term may lie in its ability to integrate product strategy and its existing capabilities, while at the same time developing fundamentally new ones (Lavie & Rosenkopf, 2006). Simultaneous investments in the exploitation of existing product innovation capabilities and the exploration of new ones may help create a competitive advantage (Soosay & Hyland, 2008). Organizational learning represents the development of knowledge that influences behavioral changes and leads to enhanced performance (Crossan, Lane, & White, 1999; Fiol & Lyles, 1985). Product innovation is a tool for organizational learning and, thus, a primary means of achieving its strategic renewal (Danneels, 2002; Dougherty, 1992; O’Cass et al., 2014). Exploration pertains more to new knowledge - such as the search for new products, ideas, markets, or relationships; experimentation; risk taking; and discovery - while exploitation pertains more to using the existing knowledge and refining what already exists; it includes adaptation, efficiency, and execution (March, 1991). Exploration and exploitation compete for the same resources and efforts in the firm. With a focus on exploring potentially valuable future opportunities, the firm decreases activities linked to improving existing competences (Levinthal & March, 1993; March, 1991). In contrast, with a focus on exploiting existing products and processes, the firm reduces development of new opportunities. However, firms must develop both exploratory and exploitative capabilities because returns from exploration are uncertain, often negative, and attained over the long run, while exploitation generates more positive, proximate, and predictable returns (Levinthal & March, 1993; March, 1991; Özsomer & Gençtürk, 2003). Researchers have shown that both types of learning are essential to enhancing firm performance (Leonard-Barton, 1992; March, 1991). In this study, we use exploration and exploitation to describe two innovation-related capabilities that are critical elements on the relationship between product strategies and export performance. International markets are turbulent and diverse with respect to customer needs, cultures, and competitiveness; therefore, innovation assumes a primary role (Kleinschmidt, De Brentani, & Salomo, 2007). Firms can leverage their innovations by securing business opportunities in those markets and thus increase their innovative capabilities (Knight & Cavusgil, 2004). Through exploratory innovation, firms develop new competences and thus enhance superior export performance by product strategies (Teece, Pisano, & Shuen, 1997). Exploitation activities are also important to exporters because they facilitate the lower-risk extension of export operations. By searching for solutions in the existent competence base, exploitative innovation increases efficiency and productivity. Accordingly, this study based on organizational learning perspective to support the idea that innovation capabilities are a vehicle for a product strategy, and achieving superior export performance. We advance the literature by allowing for a role of product strategies while also considering moderating effects of innovation capabilities. Moreover, we provide insights into how choices about emphasizing one product strategy over another relates the balance between exploration and exploitation. Hypotheses Product Strategy and Export Performance Porter’s cost leadership and differentiation strategies have been linked to the achievement of superior performance by many studies (Campbell-Hunt, 2000; Dess & Davis, 1984). A firm that successfully pursues a cost leadership strategy emphasizes “aggressive construction of efficient-scale facilities, vigorous pursuit of cost reductions from experience, tight cost and overhead control, avoidance of marginal customer accounts, and cost minimization in areas like R&D, service, sales force, advertising, and so on” (Porter, 1980: 35). A firm can, therefore, gain a competitive advantage over its rivals by having significantly lower cost structures in an industry without ignoring other areas such as product and service quality (Amoako-Gyampah & Acquaah, 2008). Thus, the maintenance of a strong competitive position for an organization pursuing a cost leadership strategy places a premium on efficiency of operations and scale economies that enable them to achieve and sustain their performance for a considerable period of time. In addition, with a cost leadership strategy, firms focus on reducing costs through operational efficiency. For example, they might exploit existing facilities and learn how to reduce costs through automation, modernization, capacity utilization, or economies of scale. Efficiency, control, planning, and variance reduction represent the key elements of a cost leadership strategy, and a typical example of a cost leadership strategy involves the implementation of an experience curve, on which cumulative production determines reductions in unit production costs. Firms engage in economies of scale and/or scope when they apply their knowledge and facilities from existing product lines to product line extensions. The associated positional advantage is a cost advantage pertaining to the firms’ value offering and is based on the product’s price–perceived value proposition in the export market. Hypothesis 1: Cost leadership strategy is positively associated with export performance. A firm that pursues a differentiation strategy may attempt to create a unique image in the minds of customers that its products are superior to those of its competitors (Miller, 1988). A firm creates these perceptions through advertising programs, marketing techniques and methods, and charging premium prices. Moreover, a firm may pursue a differentiation strategy by creating a perception in the minds of customers that its products possess characteristics that are unique from those of its competitors in terms of differences in design, physical attributes/features, and durability (Gebauer, 2008). Differentiation strategy aims to generate more outwardly focused product innovations that offer customers product differences that shape a distinctive value offering that is more responsive to their needs (Hughes, Martin, Morgan, & Robson, 2010; O’Cass et al., 2014). The associated positional advantage is a product or market differentiation advantage pertaining to the superior brand, quality, design, and product features that differentiate the firms’ value proposition from its competitors in the export market. Hypothesis 2: Differentiation strategy is positively associated with export performance. Moderating Effects of Innovation Capability From the generation of new ideas through to the launch of a new product, exploration and exploitation play a vital role in product innovation (Rothaermel & Deeds, 2004). Organizations can decide to use existing organizational competences to realize short-term results, or create new competences that may foster the development of innovations in the longer term (Atuahene-Gima, 2005). Both types of capabilities are considered to be dynamic in nature (Winter, 2003), given that their purpose is to transform existing resources into new functional competences that provide a better match for the firm's environment (Voss, Sirdeshmukh, & Voss, 2008). Although both exploitative and exploratory capabilities related to cost leadership and differentiation strategies, because of those different roles of capabilities in innovation process, the effects of those innovation capabilities on the relationship between product strategy and export performance might be different. In case of cost leadership strategy, firms focus on using and developing existing capabilities, promoting improvements in existing components and building on existing technological elements (Benner & Tushman, 2003; Rust et al., 2002). Similarly, exploitative innovation is aimed at improving existing product-market domains. The cost leadership strategy creates value through existing competences or competences that have been slightly modified (Voss et al., 2008). It promotes a routine-based and repetitive approach to organizational changes (Rust et al., 2002). Because exploitative innovation builds on existing knowledge and extends existing products and services for existing customers (Soosay & Hyland, 2008), exploitative capabilities helps firms pursuing cost leadership strategy to reap the benefits of improvement they make to their products and to continue making incremental improvements (Brucks, Zeithaml, & Naylor, 2000), which are designed to allow the firm to continue its superior performance (Griffin, 1997). Hypothesis 3: Exploitative innovation capability moderates the relationship between cost leadership strategy and export performance positively. Compared to cost leadership strategy, differentiation strategy is characterized by radical change, risk and experimentation and that allows for the creation of new methods, relationships, and products. Because exploration focuses mainly on trying to create variety, to adapt and hence exploit ever-decreasing windows of opportunity (Soosay & Hyland, 2008), this capability is more beneficial to the kind of product innovativeness to the firm (Augusto & Coelho, 2009). When exporters pursue differentiation strategy for acquiring new knowledge and developing new products and services, exploratory capability helps to engage new insight into the design of new features and benefits of a given product, that product is guaranteed to contain new ideas (Cho & Pucik, 2005; Yalcinkaya et al., 2007). In contrast with exploitation aimed at improving existing product-market domains, explorative innovation requires fundamental changes in the way an organization operates and represents a clear departure from existing practices (Menguc &Auh, 2006). Hypothesis 4: Exploratory innovation capability moderates the relationship between differentiation strategy and export performance positively. Discussion Focusing on product strategy through the application of the RBV has provided theoretical insights as well as empirical evidence as to which capabilities are required to achieve these critical product strategy outcomes. The support from this study provides further evidence of the usefulness of applying the RBV to the export setting and should encourage researchers to examine the other aspects of export strategy. Based on organizational learning perspective, in addition, this study found that exploratory and exploitative innovation capability are essential to the firm because they act as vehicles for renewing product strategy to achieve superior export performance. By considering product strategy with exploration and exploitation simultaneously, we present a new perspective of the roles of these product strategies in the development of firms’ innovation capabilities. Our results indicate that cost leadership and differentiation strategy are pivotal in ensuring a proper balance between exploratory and exploitative innovations. One of the main implications for managers is that both exploratory and exploitative product competences should consider in parallel when developing product strategy. The findings underscore the need for managers to invest in cost leadership and differentiation strategy to ensure the development of exploration and exploitation. Therefore, resource allocation decisions should, consider the firm's needs for innovation capabilities and, on the other hand, be guided by the firm’s product strategy. Exporters operate in highly complex environments, characterized by high levels of technological and market uncertainties and highly diverse and dispersed customers (Kleinschmidt et al., 2007; Mohr & Sarin, 2009). Therefore, in addition to the product strategy toward the development of innovations using state-of-the-art technologies, managers of these firms need a similarly strong focus on understanding both current and potential exporting markets. By acknowledging the need for product strategy, managers can ensure the balanced innovation capabilities.

The objectives of this study are to examine the genetic variation in oriental fruit flies (Diptera: Tephritidae) and to use it as a barcode for the origin elucidation, in preparation for the their incursions into Korea. About 1,600 specimens of B. dorsalis sp. complex and B. correcta were collected from 10 countries, the Indochina peninsula, the Philippines, Taiwan and South China. A total of 182 cytochrome c oxidase (COI) sequences were obtained and aligned from these regional specimens. Three sequences from the Genebank reference were also included. Six hundreds base pair fragments were aligned and trimmed and used for a barcode. The phylogenetic tree was generated using the neighbor-joining method with 1,000 bootstrap replicates. There were two distinct groups in the phylogenetic tree, Bactrocera dorsalis sp. complex and B. correcta. Three specimen, intercepted in the hand-carried mango at the airport inspection and collected in the confiscated mango, smuggled from Vietnam were included for a test. The DNA from the airport were 100% identical to that of one of various Vietnam specimens, and that from the confiscated mango was mostly similar to those of Vietnam, suggesting the usefulness of the barcode for the origin elucidation tool of oriental fruit fly.

The lantern fly, Lycorma delicatula (White), was firstly introduced at least around ten years ago in the Korean Peninsula, and is now distributed throughout the mainland. We collected 37 L. delicatula isolates, totally 762 individuals from various locations in Korea, China, and Japan. Our results, based on molecular comparison showed multiple introductions of L. delicatula into Korea from China as followed; 1) The population which was spreaded and prevalent in a wide area after 2008 was identical to that of Shanghi, suggesting that main routes was the seedlings of Ailanthus altissima imported a few times from Shanghi into Incheon port in 2004~2005. 2) The populations in Changwon and Samcheok collected in 2011 were from Beijing and Tianjin, respectively. 3) The population in Cheonan collected in 2006 was different from other populations.

The oriental fruit fly, Bactrocera dorsalis (Hendel), has potential of serious damage to various vegetables or fruits, especially genus of Citrus, such as mandarin orange and tangerine in Korea, where its larvae do damages. Animal and Plant Quarantin Agency of Korea and Animsl Systematics Laboratory of Kunans National University have collected the samples of oriental fruit fly in East Asian countries, Vietnam, Philippines, Myanmar, China, Cambodia, India and Nepal. To confirm genetic differences and structure of B. dorsalis population samples collected from those countries, we analyzed 192 individuals from 28 locations over 7 countries using 15 microsatellite loci. In total samples, number of different alleles, number of effective alleles and Shannon's Information Index were 6.421±0.364 (standard error, SE), 3.664±0.137 (SE) and 0.902±0.030 (SE), respectively. Grand means (±SE) of observed and expected heterozygosity over all loci and populations were 0.534 (±0.018) and 0.597 (±0.017), respectively. Among all populations, Fst values ranged from 0.016 to 0.705 with averaging 0.194 (±0.026).

The blueberry gall midge, Dasineura oxycoccana (Johnson), is a serious insect pest of blueberries and cranberries in North America. which was firstly found and identified on blueberris in Sanju-city, Gyeongsangbuk-do, Korea. For epidemiological investigation of this pest, DNA barcoding and microsatellite markers were used. First, mitochondrial COⅠ(658 bp) was analyzed with 292 D. oxycoccana individuals, which were 163 individuals from 32 regions in 25 counties, Korea and 102 individuals from 10 regions in 4 states, USA and 26 individuals from USA, Canada and UK in GenBank. Genetic distance of seven individuals from Cheonan and two from Bonghwa was 10.5% and that of two individuals from Sunchang and New Jersey was 16.6%, which are considered to be different species within the genus Dasineura. Second, population genetics of 632 D. oxycoccana individuals 29 locations was analyzed using 12 microsatellites newly developed by next-generation sequencing. The results showed that some of the populations in Korea genetically close to those in USA. Fst of Hweongseong, Bonghwa, Jeju populations compared to remaining local pops. were ranged from 0.15 to 0.24, whereas average Fst between Georgia, Michigan, and New Jersey pops. were 0.14. The origins of Hweongseong, Bonghwa and Jeju populations were assessed as Michigan, Florida (southern part of Georgia), respectively.

With the fast pace of technological change, the role of innovation on a firm’s survival has received increased scholarly attention. This study investigates the relationship between a firm’s strategic orientations, exploration and exploitation, on innovation activity. Also, the synergy effects of four types of innovation: product, process, marketing, and organizational innovation are examined with the consideration of the level of innovativeness and the firm’s industrial category. The OECD Oslo Manual (2005) and the standard of OECD (2011) classification are used as a main source to define four different types of innovation and the industry category into high-tech and low-tech. This study uses data from 856 firms taken from the Korea Innovation Survey (KIS) 2014 which is the Korean version of the Community Innovation Survey (CIS). Since most of the measures are composed of multiple items, their reliability and the underlying dimensions of each measure are tested by principal component analysis (PCA). Structural equation modeling (SEM) is then used to carry out a simultaneous test the relationships among the constructs. The moderating effects of marketing and organizational innovation are examined through multi group analysis. Results indicate that exploration and exploitation have positive impacts on the product innovation and process innovation respectively. Also, a new process encourages firms to develop radical product innovation. In case of the moderating effect of marketing and organizatioanl innovation, there are some differences between high-tech and low-tech industry. For high-tech firms, the positive relationship between a new product and firm performance is increased with the introduction of marketing innovation. In case of low-tech firms, process innovation has direct and positive impacts on a firm’s performance with organizational innovation. The findings show that the synergy effect of innovation exists and its significance could be changed depending on an industrial category.

Our study aims to investigate the mechanisms leading to focal firm’s innovation performance through the coopetitive relationships. Specifically, we argue focal firm’s two capabilities, coopetition capability and NPD capability, play a crucial role as a mediator of interfirm coopetition and its innovation performance. In order to provide new evidence on this subject, we contribute to this stream by developing a conceptual model. We argue that coopetitive behaviors of partners will influence the focal firm’s coopetition capability, which will then influence the focal firm’s NPD capability, although we assume NPD capability will have an impact on coopetition capability as well. We also argue NPD capability will not only lead to new product advantages, NPD process advantages as well, as a result of them, financial performance at the end. This paper reports the development of this model.

Premium private label brands (PPLBs) are receiving increased attention in line with their significant growth. Private label brands (PLBs) have been evolving from offering low quality at a low price to high quality at a higher price. Among multiple tiers of PLB, PPLBs are assumed to be in an exclusive tier and compete with top-tier national brands. In consumers’ minds, PPLBs are perceived and evaluated in reference to alternatives represented by regular private label brands (RPLBs) and top-tier national brands (NBs). Thus, for PPLBs, being able to provide outstanding value that is perceived in relation with competitive alternatives is a critical issue. In addition, related marketing entities such as a store type are assumed to affect consumers’ perceptions and evaluations. Based on cue utilization theory and categorization theory, this research aims to identify key relationships influencing the perceived luxuriousness and eventual purchase intention of PPLB products. This research analyzes what strategies make consumers perceive a PPLB to be luxurious and in turn, increase purchase intention. The empirical study consists of a survey conducted among college students in their 20s in Korea. The data were analyzed to test the theoretical framework using a confirmatory factor analysis and structural equations.

Interception data pertaining to Coleoptera, Hemiptera, Lepidoptera, Diptera, Thysanoptera, and Hymenoptera collected at the Korean quarantine border were cross-checked with incursion data from 1996–2014. Overall, 114,636 interception records of 1,075 species belonging to the six orders were detected, while 33 species were confirmed as incursion species in Korea. Among the 33 species, only 14 (42.42%) were recorded as being intercepted at the quarantine border. These results indicate recent incursion species in Korea are not subject to inspection at Korean border. Among the 33 incursion species, 30 (90.90%) are agricultural pests, and 10 species (30.30%) are Hemiptera. Two factors, green house cultivation and parthenogenesis of exotic species, are suggested as reasons for successfully mounting an incursion into Korea. Taken together, the results of this study revealed that border inspections do not provide useful information to protect against occurrences of exotic species incursion and the current quarantine system needs improvement. In addition, it is necessary to consider how interception data might be collected in the future to improve its predictive power with respect to predicting incursion risk.

To improve photocatalytic efficiency, graphene/Ag/TiO2 nanotube catalyst was synthesized, and its surface characteristics and photocatalytic activity investigated. For deposition of Ag nanoparticles on the TiO2 nanotubes, a polymer compound containing CH3COOAg/poly(Llactide) was utilized, and the silver particles were precipitated by reducing the silver ions during the annealing process. Graphene deposition on the Ag/TiO2 nanotubes was achieved using an electrophoretic deposition process. Based on the dye degradation results, it was determined that the photocatalytic efficiency was significantly affected by deposition of silver particles and graphene on the TiO2 catalyst. Highly efficient destruction of the dye was obtained with the new graphene/Ag/TiO2 nanotube photocatalyst. This may be attributed to a synergistic effect of the graphene and Ag nanoparticles on the TiO2 nanotubes.

본 연구에서는 스테인리스강을 사용하여 전형적인 3-전극 시스템의 순환전류전압법으로 트리에탄올아민(TEA) 용액 중에서 전류-전압 곡선을 측정하였다. 스테인리스강은 작업 전극으로, Ag/AgCl 전극은 기준 전극으로, 그리고 백금 선은 상대 전극으로 각각 사용하였고, 그 결과, 트리에탄올아민 용액에서의 스테인리스강의 C-V 특성은 순환전류전압법으로부터 산화전류에 기인한 비가역 공정으로 나타났다. 부식억제제의 확산계수의 효과는 농도 증가에 따라 감소하였다. 그리고 부식억제 효과는 농도 0.5 N의 NaClO4, 2.5x10-3 M TEA용액에서 가장 컸으며, 1.5 N NaClO4, 1.0x10-3 M TEA용액에서 가장 낮았다.

Surface modified carbon felts were utilized as an electrode for the removal of inorganic ions from seawater. The surfaces of the carbon felts were chemically modified by alkaline and acidic solutions, respectively. The potassium hydroxide (KOH) modified carbon felt exhibited high Brunauer-Emmett-Teller (BET) surface areas and large pore volume, and oxygencontaining functional groups were increased during KOH chemical modification. However, the BET surface area significantly decreased by nitric acid (HNO3) chemical modification due to severe chemical dissolution of the pore structure. The capability of electrosorption by an electrical double-layer and the efficiency of capacitive deionization (CDI) thus showed the greatest enhancement by chemical KOH modification due to the appropriate increase of carboxyl and hydroxyl functional groups and the enlargement of the specific surface area.

This study explores influencing factors for firms’ willingness to participate in open innovation. We identify commitment and trust, switching cost, and IT infrastructure as the key predecessors. The study further examines how these variables affect the firms’ participation in open innovation using datasets from the UK biotechnology industry.

The emergence of peer to peer systems such as online auction websites is a major element in e-commerce yet relatively little is known about what influences its adoption and use in different parts of the world. Using an extended Technology Acceptance Model (TAM), user attitudes and behaviors from three national environmental contexts, Korea, Germany and New Zealand, are examined and compared to determine the factors influencing the adoption and usage of this system. The key questions this paper addresses are: Are there national differences affecting the ability for the TAM to predict OAWS acceptance, and if so, in what way? And are differences observed between heavy and light user motivations and perceptions of the medium and how these differ across national environments? Answers to these questions will increase the understanding for future marketers and developers of peer-to-peer systems. An extended TAM model was developed from which a number of hypothesized relationships are posited. We use the Davis, Bagozzi and Warshaw (1989) core TAM model extended by our arguing for two key influencing factors on a user’s attitude to using a new technology, perceived risk and computer affinity. We contend the drivers of perceived risk are: perceived enjoyment, trust in intermediary, perceived reputation system effectiveness, and positive past experience. Additionally we address the limited understanding in the literature of the national environment effects on technology acceptance. National cultural effects such as uncertainty avoidance and individualism, along with technological heritage and country innovativeness may need to be understood to determine potential differences in consumer activity and the robustness of the theoretical model. We also considered usage behavior to be important. Research for example, identifies heavy users as influencers on other potential adopters; thus important targets for developers and marketers of new technologies. Results suggest that although the core TAM is somewhat robust for the three nations along with the extended model for the respondents from South Korea, there are some key differences in the extended model between New Zealand and Germany. Specifically the relationships: Positive Past Experience and Perceived Risk are not supported in NZ or Germany, and “computer affinity” and “attitude to using” unsupported in Germany. We similarly found differences in the attitudes of light and heavy users between the samples, especially the Korean sample with the others. Our findings highlight that national environmental variations, especially between the “eastern” and “western” samples are important, which could be attributed to both uncertainty avoidance and individualism. Key conclusions and recommendations will be given.

Surveillance for subtropical moths through the inanimate pathway in the Korean Peninsula was investigated during the past seven years using the light trap in Baengnyeong and Daecheong islands, located near the Northern Limit Line (NLL) in the West Sea. Each record typically includes the taxonomic identify, its country of origin, and information related to inanimate pathway. A total of 2,201 individuals were detected, comprising 25 families, 441 species of Lepidoptera. The most dominant species was Chionarctia nivea (Noctuidae) with 44 individuals, followed by a crambid moth, Ostrinia furnacalis with 37 individuals. Among them, two species of subtropical moths, including Ischyja manlia Cramer and Spirama sp. belonging to the family Noctuidae, and they are mostly distributed in the subtropical area from the southern part of China to Borneo or Java. Interestingly, the other three species, Acronicta pruinosa (Guenée), Marumba spectabilis (Butler), and Spodoptera pecten Guenée were distributed in the southern regions, however, due to the effects of global warming, biotic province is now considered that may be certified moving northwards. Thus, it is very important to our weather conditions and further study on the surveillance of subtropical or/and southern species is needed, considering its possible status as a pest insect.

The genus Panonychus has been reported only two species, P. ulmi and P. citri, in Korea. Two new species, P. mori Yokoyama, 1929 and P. caglei Mellot, 1968 were firstly identified from jujube orchards in Gyeongsan and kudzu vine in Byunsan peninsula in Korea. Morphological differences among four species have been described especially in aedeagus shape. Comparison of nucleotide sequences of both the internal transcribed spacer 2 (ITS2) region of nuclear ribosomal RNA gene and the mitochondrial cytochrome oxidase subunit I (COI) gene were compared between four species. Phylogenetic analysis of ITS2 and COI sequences using neighbor-joining method showed that P. mori and P. caglei were most similar to each other and more closely related to P. ulmi than P. citri. In addition, species-specific primer sets of each species were designed based on ITS2 sequencesand can be used to diagnose species in this genus.

Lepidopteran hitchhikers were investigated in vessel at five major ports of Korea in 2013. These moths were collected by International Plant-Quarantine Accreditation Board (IPAB) during inspection on vessels for Asian Gypsy Moth (AGM). The results typically include the taxonomic identification, their origin localities, and information related to commodities and ship’s route. A total of 1,026 individuals were detected in vessels and identified with 236 species belonging to 21 families. Although most of the species are already known to the Korean fauna, the following three species are unknown: Lymantria xylina Swinhoe (Lymantriidae), Glyphodes actorionalis Walker (Crambidae), and Histia flabellicornis nigrinus Jordan (Zygaenidae). Interestingly, H. flabellicornis nigrinus Jordan was detected for two consecutive years. Although this species is not an important pest, it will be need to necessarily continual monitoring. L. xylina Swinhoe which is a great potential forest pest, was detected four times (16 specimens) at Busan port of entry. Therefore, it is necessary to provide comprehensive border surveillance monitoring and a valuable historical record of the array of lepidopteran hitchhikers transported to the Korea through inanimate pathway, in order to counter further potential importance of hitchhikers on international vessels at Korea.

Six unknown hitchhiking moths intercepted at the Korean port of entry were detected from an international vessel by the personnels of the International Plant-Quarantine Accreditation Board (IPAB) in 2012. Among them, there was a noctuid moth, Noctua pronuba (Linnaeus), which is a quarantine pest in Korea. Other five species are three erebids (Lophocampa maculata Harris, Lemyrarhodo philodes (Hampson), and Trigonodes cephise (Cramer)), one sphingid (Hippotion rosetta Swinhoe), and one zygaenid (Histia flabellicornis nigrinus Jordan). They are mostly distributed in the subtropical regions. In addition to these hitchhiking moths from the vessel, other interception records from inanimate pathways are provided here on the bases of Pest Information System, Animal and Plant Quarantine Agency (QIA). Thus, it is necessary to monitor inanimate pathways and to adopt comprehensive border surveillance system, in order to protect further invasions of alien insect species.