This study improved the work efficiency by supplementing the shortcomings of the manual process by developing a double tube feeding device, and the following results were obtained by conducting the production capacity, production length, and defect rate tests. Developed a double tube production system to enable the simultaneous production of two tubes, increasing the production volume by about 1.5 times. The product length has been improved from semi-automatic to automated, and the production capacity has been improved from 16 to 25 pieces per hour (based on 15m). Developed a double-tube input straight line automatic adjustment feeder, which resulted in reducing the defect rate to less than 1%.

When treating the 3rd instar larvae of the diamondback moth (DBM), Plutella xylostella, with sublethal doses (LC10) of chlorantraniliprole, indoxacarb and spinosad via leaf dipping, their tolerance to insecticides was significantly enhanced. By analyzing the differentially expressed genes (DEGs), we found a number of genes that respond commonly or specifically to the test insecticides. With the criteria of p value < 0.05 and Log2FC > 1/ < -1, a total of 476, 367 and 410 genes were determined to respond specifically to chlorantraniliprole, indoxacarb and spinosad, respectively. Gene Ontology (GO) analysis revealed that the cuticle reorganization is commonly associated in all treatments and the oxidative stress-related process is also shown in all insecticides except spinosad. Finally, the DEGs seemingly related with enhanced tolerance were chosen for further characterization, and reliability of the transcriptome data were confirmed by quantitative PCR. The functional categories of these DEGs included mostly detoxification related genes, cuticle proteins, energy metabolism and transcriptional regulation. While the commonly responding DEGs suggest that they are likely involved in defense against common intoxication process, the DEGs specifically responded to each insecticide suggests the presence of unique tolerance mechanisms to each insecticide depending on their different structure and mode of action. Their possible roles in the tolerance/resistance development were discussed.

First Mover Advantage is already well known. It is when a company gains a position in a certain market or industry, or when it establishes a strong entry barriers through a distribution channel or a monopoly of resources. It is a concept that has been attracting attention for a long time in marketing and strategy. However, although it is possible for the starter to enjoy these various benefits, it is also true that there is a corresponding price. Therefore, the risks and costs that the starter may bear, and thus the relative benefits enjoyed by the latter, can be significant. Late Mover Advantage and so on. The fact that latecomers can enjoy a variety of benefits as well as the profits of the starters is an important consideration that must be taken into account by many companies considering entry into the market. In general, there is a very high risk of overinvestment in technology and market uncertainty. For example, China has skipped wired networks and went wireless, and many African countries have skipped wired communications and built infrastructure for wireless communications. In other words, companies that hastened to invest in fixed-line facilities in order to preoccupy the African telecom market are in a state of failure rather than expecting the interests of the starters. Another thing is that the starter has to bear more risks and costs than the latter, such as the uncertainty of demand, the risk of changing consumer preferences, and the cost of training new consumers. Also, because imitation is generally less costly than development, a latecomer entering through imitation may be in a better position if patents or other technical defenses are not available. Especially, if latecomers have excellent management ability and financial power such as excellent marketing ability, it is relatively easy to catch up with the first candidate.

Introduction The Fourth Industrial Revolution brings a great change in the retail market through combining new digital technologies, such as data clouding, Artificial Intelligence, and Virtual Reality(VR) technology. The Alibaba group, which is in charge of 90% market share in China, announced a new Virtual Reality (VR) shopping mall, Buyplus, and Alibaba expected that VR will improve shoppers’ engagement and will experience the joy of shopping mall at home. The potential power of VR shopping mall in Korea is recently acknowledged by the Korean government and Korean government developed the full scale VR shopping mall for the first time in Korea. The VR shopping mall is expected to be a new paradigm of distribution channel industry by incorporating some advanced digital technologies. Conceptual Background In previous study, Pelet et al. (2017) investigated the optimal flow experience enhanced by the telepresence in social media. The overall flow provides a unique immersion experience for social media users, also the frequency of use and time distortion were affected during the use of the system. Choi and Choi (2016) conducted a study and they showed that telepresence was one of the important factors in the new technology-based marketing environment. Limioid Theory is explaining a psychological process when user enters into a new situation. Users have to decide how to expand and act on their own in a new situation, so users quickly fall into new situation and want to transit successfully (Huang & Liao, 2017). Virtual Reality shopping with new technology will bring a new marketing paradigm in the future. The purpose of this study is to analyze users’ telepresence and other underlying factors of behavioral intention of VR shopping. To achieve this primary goal, first, we investigated the factors of VR shopping psychology—such as telepresence, challenge, body ownership, and control for VR shopping. We also tried to investigate the factors of perceived value VR shopping - such as playfulness and usefulness by applying the Flow Theory and Virtual Liminoid Theory. Second, we analyzed the relationships between the factors of perceived value and the behavior intention VR shopping by applying the Technology Acceptance Model (TAM). This study suggests the moderating effects of technology readiness and time distortion between telepresence and playfulness. Model Testing and Conclusion In this study, we developed the virtual reality supermarket which is operated by headmounted VR glasses and body sensors with the help of VR technology start-up company. Total 120 university students participated and experienced the VR shopping. By using the structural equation model, research hypotheses were tested and most research hypotheses were statistically significant and accepted. The final research model also showed the statistical significance with the goodness-of-fit indices. We tried to analyze the moderating effects of time distortion and technology readiness between telepresence and playfulness. We also found that there is a moderating effect of time distortion between body control and playfulness. As a result of model testing, we found that playfulness and usefulness are the major mediators between the underlying factors of VR shopping and behavioral intention of VR shopping. The results of this study about VR shopping explain how retail and marketing managers can operate VR shopping store in the technology-based future retail environment. The managerial implications of the study results for the corporate marketing managers and the limitations of the study were also discussed.

To identify genes that commonly respond to the treatment of different insecticides and are responsible for the toleranceenhancement, transcriptomic profiles of larvae treated with sublethal doses of the five insecticides were compared withthat of untreated control. A total of 117,181 transcripts with a mean length of 662 bp were generated by de novo assembly,of which 35,329 transcripts were annotated. Among them, 125, 143, 182, 215 and 149 transcripts were determined tobe up-regulated whereas 67, 45, 60, 60 and 38 genes were down-regulated following treatments with these five insecticides.The most notable examples of commonly responding over-transcribed genes were two cytochrome P450 genes and ninecuticular protein genes. In contrast, several genes composing the mitochondrial energy generation system were significantlydown-regulated in all treated larvae. Considering the distinct structure and mode of action of the five insecticides tested,the differentially expressed genes identified in this study appear to be involved in general chemical defense at the initialstage of intoxication. Their possible roles in the tolerance/resistance development were discussed.