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#ME AND BRAND: UNDERSTANDING THE BRAND-SELFIE POSTERS ON SOCIAL MEDIA
Yongjun Sung,Jung-Ah Lee,Sejung Marina Choi,Eunice Kim 글로벌지식마케팅경영학회 2016 Global Marketing Conference Vol.2016 No.7
As consumers take greater control over products and brands they consume, electronic word-of-mouth (eWOM) and user-generated content (UGC) are now being considered as one of the most critical product sources for consumers. Most notable in recent years has been the widespread emergence of eWOM in social media. The proliferation of a variety of social networking sites (SNSs), propelled by the development of mobile technologies (e.g., smartphones), has allowed consumers to share, more quickly and easily than ever before, product information, reviews, and consumption experiences. Perhaps one of the newest and most effective ways to communicate brand information and experiences in digital environments is the ‘brand-selfie.’ Every day, millions of selfies (i.e., a photograph that one has taken of oneself, typically with a smartphone or webcam and shared via social media) are taken and then posted on a variety of SNSs all over the world, providing people the opportunity to show multiple facets of the self (Bazarova et al., 2013). Further, there are consumers who voluntarily post selfies with brands/products they possess (so called brand-selfies) and brand-related hashtags (e.g., your #brand). Through brand-selfies, consumers not only express themselves by connecting with and extending through brands, but also influence peer consumers’ brand attitudes and purchase decisions by sharing brand information. In order to better understand how the selfie can succeed on SNSs as a new form of eWOM, in the present study, we attempt to identify key predictive variables that may lead consumers to post brand-selfies and engage eWOM in social media. We do so by comparing how such variables differ between those who post brand-selfies and those who do not. Specifically, this study examines whether brand-selfie-posting behavior is influenced by two individual difference factors (i.e., narcissism and materialism), and whether it is associated with consumers’ beliefs that SNSs are brand/product information sources. Using a survey administered by an online panel, a total of 305 participants who had had the experience of taking and posting selfies on SNSs participated. Discriminant analysis identified the characteristics of consumers who post brand-selfies, and those who do not. Findings suggest that narcissism, materialism, and belief that SNSs are a brand/productinformation source are significant factors in stimulating SNS users’ brand-selfie posting behaviors, and that they could be used to differentiate between brand-selfie posters and no-brand-selfie posters. Of these factors, consumers’ perceptions of SNSs as a source of brand/product information best predicted brand-selfie posting behaviors, followed by materialism and narcissism. Areas for future research are discussed.
( Yongjun Choi ),( Jeongwon Ryu ),( Sang Rak Lee ) 한국축산학회 2020 한국축산학회지 Vol.62 No.1
Organic waste used as a feedstock in the anaerobic digestion (AD), it includes carbon and nitrogen. Carbon and nitrogen have an effect on the various digestive characteristics during AD, however, the study is rare about those of the interaction. This study investigates the influence of carbon type and carbon to nitrogens (C/N ratios) on the AD characteristics of organic waste. Experimental treatments involved a combination of three carbon types with three C/ N ratios. The AD tests were carried out using a 125-mL serum bottle at a constant temperature of 37℃ and moisture 95% for 18 days. Degradation pattern shows the difference among three-carbon treatments, the starch group was faster than other groups. Maximum methane production date was similar between starch (9.96 ± 0.05 day) and xylan group (10.0 ± 0.52 day), those of the cellulose group (14.6 ± 1.80 day) was slower than other groups (p < 0.05). The lag phase was only affected by the carbon type (p < 0.05). Ammonia nitrogen was mainly affected by nitrogen concentration regardless of carbon type (p < 0.05). This study showed that xylan is useful as feedstock in order to decrease the lag phase, and it showed that ammonia was independently affected by the nitrogen concentration.
Control over the emission properties of impregnated dispenser cathodes via surface pore density
Yongjun Hong,Seong Lee,Jin-Woo Shin,Sung Ho Lee,Joon-Ho So 한국물리학회 2016 Current Applied Physics Vol.16 No.10
Metal injection molding (MIM) was used to fabricate impregnated dispenser cathodes. The emission properties of tungsten cathodes were adjusted by controlling the number of exposed surface pores via mechanical polishing after completion of the impregnation process with 4BaO:CaO:Al2O3 (4:1:1) at 1600 ~ 1900C. The average distance between neighboring pores decreased as the number of pores increased. Three cathode samples having various surface pore densities were compared. Emission improved as the surface pore density increased. An average distance between exposed pores of 3.32 mm resulted in an emission current of 2.14 A (7.57 A/cm2) at 1030Cbr, corresponding to a work function of 1.92 eV, which is comparable to that of an M-type cathode. Thus, control of the surface pore density of impregnated cathodes provides a simple, cost-effective means to produce high current density thermionic electron guns.
Park Yongjun,Choi Dong Uk,Kim Hyung Ook,Kim Yong Bog,Min Chungki,Son Jung Tack,Lee Sung Ryol,정경욱,Kim Hungdai 대한대장항문학회 2022 Annals of Coloproctolgy Vol.38 No.4
Purpose: Surgery to create a stoma for decompression might be required for unresectable stage IV cancer patients with complete colonic obstruction. The aim of this study was to compare the results of blowhole colostomy with those of loop ostomy. Methods: Palliative ileostomy or colostomy procedures performed at a single center between January 2011 and October 2020, were analyzed retrospectively. Fifty-nine patients were identified during this period. The demographic characteristics and outcomes between the blowhole colostomy group (n=24) and the loop ostomy group (n=35) were compared. Results: The median operative time tended to be shorter in the blowhole colostomy group (52.5 minutes; interquartile range [IQR], 43–65) than in the loop ostomy group (60 minutes; IQR, 40–107), but the difference did not reach statistical significance (P=0.162). The median length of hospital stay was significantly shorter with blowhole colostomy (blowhole, 13 days [IQR, 9–23]; loop, 21 days [IQR, 14–37]; P=0.013). Mean cecum diameter was significantly larger in the blowhole group than in the loop group (8.83±1.91 cm vs. 6.78±2.36 cm, P=0.001), and the emergency operation rate was higher in the blowhole group than in the loop group (22 of 24 [91.7%] vs. 23 of 35 [65.7%], P=0.021). Conclusion: In surgical emergencies, diverting a blowhole colostomy can be safe and effective for palliative management of colonic obstruction in patients with end-stage cancer and might reduce the operative time in emergent situations.
Choi, Yongjun,Lee, Eun Chae,Na, Youngjun,Lee, Sang Rak Asian Australasian Association of Animal Productio 2018 Animal Bioscience Vol.31 No.10
Objective: This study was conducted to investigate the effects of dietary supplementation with fermented and non-fermented brown algae by-products on the laying performance, egg quality, relative organ weight, and blood profile of laying hens. Methods: Hy-Line Brown chickens (n = 180; 70-week-old) were randomly divided into 5 groups with 4 replicates per group (3 hens per cage, 4 cages per replicate), and fed with 5 experimental diets, namely the basal control diet (CON) or the control diet supplemented with 0.5% brown seaweed (BS), 0.5% seaweed fusiforme (SF), 0.5% fermented brown seaweed (FBS), or 0.5% fermented seaweed fusiforme (FSF), for 4 weeks. Results: Egg production rate and egg mass were greater in the BS group than in the other groups (p<0.05), and the SF and FSF groups had greater egg production than the control group (p<0.05). Egg weight was higher in the BS group than in the other groups (p<0.05). There were no differences in eggshell color, egg yolk color, eggshell strength, or eggshell thickness among the groups. There was no difference in Haugh units among the treatment groups, except for the FSF group, which had a significantly lower value (p<0.05). The non-fermented groups had greater relative organ weights, particularly the liver and cecum, than the other groups (p<0.05). Regarding blood profile, the supplemented-diet groups had higher albumin levels than the control group (p<0.05). The FBS group had higher total cholesterol and triglyceride levels than the other groups (p<0.05). The BS and FBS groups had higher glutamic pyruvic transaminase levels than the other groups (p<0.05). Conclusion: This study demonstrated that dietary brown algae supplementation can improve egg-laying performance; however, supplementation with fermented seaweeds had no positive effect on the egg-laying performance of hens.
순회 판매원 문제를 위한 국소 탐색으로 개선된 문화 알고리즘
김용준(Yongjun Kim),조성배(Sung-Bae Cho) 한국정보과학회 2008 한국정보과학회 학술발표논문집 Vol.35 No.2
본 논문에서는 순회 판매원 문제(Traveling Salesman Problem)를 풀기 위한 새로운 방법을 제안한다. 사회적 지성(social intelligence)을 통하여 개체의 진화 방향을 인도하여 보다 나은 전역적인 해를 구하는 문화 알고리즘(Cultural Algorithm)을 활용하고, 국부적 최적화를 수행하는 국소 탐색(Local Search) 방법 을 보완적으로 적용하여 적은 세대의 진화 연산을 통해서도 더 좋은 성능의 해를 찾을 수 있도록 하였다. 문화 알고리즘에 의해 개체들은 단순 진화가 아니라 사회적 지성에 의해 더 좋은 해를 향해 인도되고, 국부 탐색에 의해 가능한 최적의 해에 수렴하게 된다. 따라서, 보다 빠르게 좋은 해에 접근할 수 있다. 다양한 TSP 문제에 적용하여 수행한 실험 결과는 제안한 방법이 매우 효율적인 성능을 나타냄을 보여준다.