Understanding Continuous Use of Virtual Communities : A Comparison of Technical and Social Perspectives

함주연(Juyeon Ham),이재남(Jae-Nam Lee),이정(Jung Lee) 한국IT서비스학회 2013 한국IT서비스학회지 Vol.12 No.4

The aim of this study is to find the model that best explains members' continued use intention in virtual communities by comparing technical and social perspectives applied in IS context. With the eight major variables identified from prior studies. four alternative models were formulated : 1) A base model from Information Systems (IS) continuance perspective. 2) IS continuance model with technology-acceptance perspective. 3) IS continuance model with social-capital perspective, and 4) IS continuance model with socio-technical combined perspective. The adequacies of these four models with different perspective highlighted were tested using survey data collected from virtual community users in Korea. The findings indicated that the IS continuance model and social-capital perspective is the most efficient model that best explains the members' continued use intention in virtual communities.

도보여행 안전정보의 유형별 중요도 및 우선순위 도출: 오픈데이터 활용을 중심으로

함주연 ( Juyeon Ham ),최수정 ( Sujeong Choi ),구철모 ( Chulmo Koo ) 한국지식경영학회 2018 지식경영연구 Vol.19 No.1

The tourism industry is now changing to smart tourism, which maximizes tourists’ overall tourism experience with the use of advanced mobile technologies and emphasizes the utilization of tourism information. Despite the quantitative expansion of the tourism industry, there is a lack of academic and practical discussion on tourism safety. Especially, in the context of walking tourism, tourists are more likely to be exposed to natural or social disasters and emergencies. Therefore, it is necessary to build a system that can provide walking tourists with safety information not only on dangerous factors which are anticipated to be confronted during a walking trip in advance but also on specific dangers in real time. Under the circumstances, this study seeks to identify the types of tourism safety information that can be offered by using publicly available open data, drawing on the safety information framework on the walking tourism that is presented in Choi et al. (2017)’s study. More specifically, this study focuses on the use of open data which is provided by the Korean government. Furthermore, this study verifies the types of safety information that are most urgently needed in walking travel situations. Specifically, this study aims to derive the importance and priority of each type of safety information for a walking trip by applying the analytic hierarchy process (AHP) analysis. For this, we collected 35 questionnaires from walking tour operators (practitioners) and walking tourists. The main results are as follows. First, natural disaster information is the most important factor in the top-level factor of safety information for walking tourists, followed by social disaster, life safety, and exhibition (security crisis) information. Second, information on natural disasters, environmental pollution, and weather is considered to be important at the sub-level factor. Lastly, the noteworthy result of this study is that the importance of each type of safety information varies depending on the walking tour operators (practitioners) and the walking tourists. That is, there is a recognition difference between the operator (practitioner) and the user in the importance and priority of the safety information of the walking trip. Therefore, it is necessary to develop policies and services reflecting the opinions of potential users when providing safety information so that the most importantly recognized information can be provided first.

학교선별뇨검사를 통하여 조기에 발견된 Oligomeganephronia의 4년 추적 관찰 1례

함주연,구남향,임현이,김기혁,배기수,Ham Ju-Yeon,Koo Nam-Hyang,Lim Hyun-Yi,Kim Kee-Hyuck,Pai Ki-Soo 대한소아신장학회 2003 Childhood kidney diseases Vol.7 No.2

Oligomeganephronia는 선천적인 신형성 부전으로 신원의 수가 감소되고 보상성으로 사구체가 비대해진 질환으로 지금까지 전 세계적으로 약 60례만이 보고될 정도로 매우 드문 질환이다. 저자들은 학교선별뇨검사상 현미경적 혈뇨를 보였던 환아에서 신생검을 통하여 oligomeganephronia를 조기에 진단하고, 4년간 신부전증 및 성장부전의 진행 소견과 함께 사구체 경화증의 발생으로 사구체 용적이 감소하는 소견을 관찰할 수 있었기에, 이를 문헌 고찰과 함께 보고하는 바이다. Oligmeganephronia is congenital hypoplasia of kidney with renal pathology showing very small number of nephrons with compensatory hypertrophy of the remaining glomeruli. A 7-year-old girl was referred to our nephrology clinic due to hematuria detected on school screening urinalysis and diagnosed as chronic renal failure and oligomeganephronia on renal biopsy. We are reporting the clinical and histomorphometric changes for the four years follow-up with review of literatures.

SNS 사용자의 이용습관과 감정적 요인 관점에서 기업 SNS 계정의 지속적 사용의도에 관한 연구

함주연 ( Juyeon Ham ),유현선 ( Hyun Sun Ryu ),지성훈 ( Sung Hun Ji ),이재남 ( Jae Nam Lee ) 한국지식경영학회 2014 지식경영연구 Vol.15 No.3

Since social network service (SNS) has been widely used as a effective way for people to connect and communication with each other, the use of corporate SNS account also has increased. However, compared to a private SNS account, only few people have a continuous relationship with their corporate SNS account because the use of corporate SNS account tends to be one-time and temporary activity whenever the users just need events and information. Given the psychological side effects of using SNS, the relative lack of empirical studies on the impacts of emotional factor in SNS prevents the deeper understanding of the intention to continuous using corporate SNS account. Therefore, this study aims to explore key determinants of the intension to continuous using the corporate SNS account from a habit and emotional perspective. To bridge research gap, we attempt to divide emotional factor into the following 5 factors based on Mehrabian and Russell model (1974): intimacy, enjoyment (positive factor), privacy concern, anxiety (negative factor), arousal (arousal factor) and (dominant factor). The basic model is proposed to explore the effects of habit and emotional factors on the intension to continuous using the corporate SNS account. We then examine how the effects of habit and emotional factors differ depending on social media types (e.g., facebook and twitter). The results indicates that habit is related to emotional factors, and each emotional factor differently influences the intension to continuous using the corporate SNS account. The results also confirm that the effects of the habit and emotional factors on the intension to continuous using the corporate SNS account differ according to social media types. This study provides practical and useful guidance and the strategic marketing insight for managers in maintaining and improving the intension to continuous using the corporate SNS account.

Tc-99m MAG3 Scan의 배뇨 후 배설상으로 진단된 역류성 신병증 1례

김홍국,유재은,함주연,윤석남,배기수,Kim Hong-Guk,Yu Je-Yun,Ham Ju-Yeon,Yun Suk-Nam,Pai Ki-Soo 대한소아신장학회 2003 Childhood kidney diseases Vol.7 No.2

저자들은 우측 옆구리 통증과 발열을 주소로 내원한 12년 8개월 된 여아에서 복부초음파 검사와 $^{99m}Tc-MAG3$ Scan의 후면 관류상 및 배뇨후 지연 배설상으로 진단된 중등급 이상의 방광요관역류와 동반된 역류성 신병증 증례를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. 또한 요로 감염증 및 신병증이 있는 환아들의 경우 심한 역류와 역류성 신병증의 조기발견과 신속한 대처를 위해 고식적 검사와 배뇨 후 지연 배설영상검사를 시행하기에 앞서 비침습적인 $^{99m}Tc-MAG3$ Scan을 시행할 것을 제안하는 바이다. $^{99m}Tc-MAG3$ Scintigraphic Scan is sensitive at depicting focal parenchymal abnormalities and can be used for the measurement of overall renal function. We experienced a 12-year-old girl presenting with fever and flank pain. On the ultrasonogram and post-voiding delayed image of $^{99m}Tc-MAG3$ scintigraphic scan, severe right cortical atrophy and hydronephrosis with vesicoureteral reflux were detected. We could demonstrate the reflux nephropathy by these two diagnostic work-up without conventional voiding cystourethrography.

정보기술 아웃소싱에서 기업 내부 및 외부의 정보기술 거버넌스 정렬이 기업성과에 미치는 영향에 대한 연구

박지훈(Park, Jihun),함주연(Ham, Juyeon),구윤모(Koo, Yunmo),이재남(Lee, Jae-Nam) 한국서비스경영학회 2016 서비스경영학회지 Vol.17 No.5

Given that Information Technology(IT) is fundamental to a firm’s survival and growth, firms face the critical challenge of integrating, building, and reconfiguring IT resources so as to obtain competitive advantage and superior performance. Many of IT research have separately focused on the effects of internal and external IT governance. However, few studies investigated the alignment between internal and external IT governance and its effect on firm performance. To address this research gap, this study identifies internal and external IT governance types based on prior literature, proposes three optimal alignments between both types of IT governance, and hypothesizes their effects on firm performance. The proposed hypotheses are then empirically tested using 142 Korean firms that have implemented IT outsourcing. Results show that a centralized-based alignment(i.e., centralized and independent), a decentralized-based alignment(i.e., decentralized and arm"s-length), and a hybrid- based alignment(i.e., hybrid and embedded) lead to the highest firm performance. This study offers requisite guidance to practitioners in choosing outsourcing alignments by conducting a holistic analysis of the effects of various alignments on firm performance.

스마트관광: 철학적 사유와 학문 정체성

구철모(Chulmo Koo),함주연(Juyeon Ham),노성결(Shengjie Lu),정남호(Namho Chung) 한국경영학회 2020 한국경영학회 통합학술발표논문집 Vol.2020 No.8

여행의 변화된 패러다임과 스마트폰 사용에 익숙한 관광객의 요구사항은 점차 다양해지고 있다. 이처럼 변화하는 관광객의 요구에 부합하기 위해 등장한 개념이 스마트관광이다. 그러나 스마트관광에 대한 개념과 정의는 연구자의 관점에 따라 다르게 설명되고 있으며, 연구 주제와 분야에 대한 종합적이고 포괄적인 이해가 부족한 상황이다. 따라서 본 연구에서는 스마트관광의 철학적 고찰과 학문적 정체성에 대한 이해를 바탕으로 스마트관광에 대한 개념을 정리하고, 기존 연구동향을 파악함으로써 향후 스마트관광의 전망과 연구방향을 제시하고자 한다.

스마트 관광 시대에 국내 도보여행을 위한 안전정보 프레임워크 개발 및 적용

최수정 ( Choi Su-jeong ),함주연 ( Ham Ju-yeon ),구철모 ( Koo Chul-mo ) 한국정보시스템학회 2017 情報시스템硏究 Vol.26 No.3

Purpose This study aims to propose a framework for safety in domestic walking tourism, which defines the scope and type of safety information for tourists. Also, the framework provides a systematic classification for safety information in walking tourism. As the importance of safety in walking tourism due to the frequent occurrence of crimes and unexpected accidents increases, it is necessary to provide tourists with safety information on walking courses rapidly and systematically. However, most administrators (e.g., local governments) have mainly focused on providing tour information on walking courses through Internet websites or mobile apps, overlooking the safety issue. Besides, there is a lack of understanding of safety not only in walking tourism but also in the whole tourism industry. Design/methodology/approach This study proposes the framework that covers all possible safety-related information in walking tourism. Furthermore, to validate its availability, this study analyzes eight major platforms which offer tour information to tourists by applying the framework. Findings The major findings of this study are as follows. First, all platforms considered in this study do not provide any information on tourism safety, focusing on the provision of tour information. Second, three platforms currently provide an SOS function which means post-safety information. That is, no safety information is provided to prevent safety issues in advance. Finally, despite the increase of social concerns, all platforms do not provide safety information on public order and diseases in the social disaster classification as well as environmental pollution in the natural disaster classification. The details and implications of the findings are presented.

전시회 광고의 정보 품질과 매체 신뢰도가 광고태도 및 전시회 참관의도에 미치는 영향에 대한 연구: 전시회 유형을 중심으로

김윤정 ( Yoonjeong Kim ),함주연 ( Juyeon Ham ),구철모 ( Chulmo Koo ) 한국지식경영학회 2018 지식경영연구 Vol.19 No.3

Under exhibition circumstances, exhibition advertising by organizer is a mean to promote exhibition service to exhibitors and visitors while general advertising is to promote products and services to consumers. The objective of this research is to suggest advertising strategies by seeing differences in the impact of information quality and media credibility on visitor intention depending on the types of exhibition. This study adopted Elaboration Likelihood Model to measure the impact of central and peripheral cues on advertising attitude and its consequence on visitor intention. We further examined how these influence processes were moderated by exhibition types of B2B and B2C. We conducted survey from B2B and B2C exhibitions respectively, and analyzed structural equation model and moderator regression. We found that first, among factors of information quality as a central cue, argument strength has a positive impact on attitude towards advertising. Second, we also found among factors of media credibility as a peripheral cue, media trustworthiness has a positive impact on attitude towards advertising. Lastly, this study revealed that a type of exhibition moderates the central and peripheral routes towards advertising attitude, showing that B2C visitors are influenced by factors of information quality, and B2B visitors rather by media credibility. This study yields implications in that it gives marketers of organizer a background to set different marketing strategies depending on the types of exhibition.

계층적 멀티스케일 하이브리드 나노물질을 이용한 투명 유연 전극소자 공정

김권규(Kyun Kyu Kim),고승환(Seung Hwan Ko),이필립(Phillip Lee),함주연(Jooyeun Ham),이진환(Jinhwan Lee) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.11

Future electronics are expected to ultimately be in the form of wearable electronics. To realize wearable electronics, the electric components should be soft, flexible, and even stretchable to be human-friendly. Here we present a novel method of hierarchical multiscale hybrid nanocomposites of Carbon nanotube and Silver nanowire for highly, stretchable, or transparent conductors. The hybird nanocomposites presents enhanced electrical conductivity and optical transparency of relatively bigger Ag nanowire backbone providing efficient multiscale electron transport path with the local CNT percolation network. The highly elastic hybrid nanocomposite conductors and highly transparent flexible conductors can be mounted on any non-planar or soft surfaces to realize human-friendly electronics interface for future wearable electronics.