디지털융합 시대의 소비자 행동과 매체 활용에 관한 탐색적 연구 : 미래소비자 대상 표적집단면접법에 의한 정성적 접근

박기호(Kiho Park),김연정(Yeon-Jeong Kim) 한국IT서비스학회 2010 한국IT서비스학회지 Vol.9 No.4

In the age of digital convergence, it is expected that quality of life of human beings can be improved by converged devices and services. Researches concerning change of buying patterns and consumer behaviors in these contexts have to be progressed actively. To investigate future trend of consumer behaviors, we used focus group interview for qualitative approach in the first step and then conducted questionnaire survey for experts in order to get validity and feasibility of research results. As result of research we suggested eight propositions by FGI for 20s target consumers. Additionally, on the basis of qualitative research, by questionnaire survey for 22 experts two perspectives of positive and negative views In future trends were proposed. Results can give lots of implications and research motivations to academia, practices and workers in public policies who have interests in change of consumer behaviors, thinking styles, and life style under digital convergent environment.

지열에너지와 진공 막 증류법을 활용한 해수담수화 연계형 공정의 경제성 분석

박기호(Kiho Park),김진현(Jin Hyun Kim),김혁수(Hyuk Soo Kim),이관영(Kwan-Young Lee),양대륙(Dae Ryook Yang),김경남(Kyung Nam Kim) 한국청정기술학회 2014 청정기술 Vol.20 No.1

최근 도서지역 지하수의 염분증가로 인해 지하수가 점차 생활용수로 부적합해 짐에 따라 해수담수화의 필요성이 크게 대두되고 있다. 이러한 해수담수화를 수행하기 위해서는 많은 에너지 비용이 들어가는데, 최근 에너지가격의 상승으로 경제성 확보가 어려운 실정이다. 지열에너지를 활용한 연계형 플랜트가 문제를 해결하는 중요한 방법이 될 수 있다. 지열시스템은 지구 내부의 온도를 이용하는 방법으로서 항상 온도가 일정하며 24시간 활용할 수 있어 이용률이 높다는 장점이 있기때문이다. 본 연구에서는 지열을 보조열원으로 활용한 진공 막 증류법 해수담수화 플랜트를 설계하고, 지열과 연계하지 않은 일반 진공 막 증류법 해수담수화 플랜트와 경제성 비교분석을 했다. 그 결과 할인율 5%일 경우 지열연계형이 $23,822,409 만큼 더 높은 순현재가치값을 가지며, 운영기간 5.36년을 분기점으로 두 플랜트의 현금흐름이 역전되어 지열연계형 플랜트가 일반 진공 막 증류법 해수담수화 플랜트보다 더 큰 경제성을 갖는 결과를 얻었다. 또한 민감도 분석에서 주요 변수들 간의 결과값 비교를 한 결과, 스팀이용비용의 변동폭이 가장 큰 영향을 미친 점에 비추어 스팀비용이 높은 지역일수록 지열에너지 연계형 플랜트가 경제적이고 효과적인 솔루션인 것으로 증명되었다. Because of the water scarcity caused by the increase of salinity in the underground water, seawater desalination stands out as one of the most promising solution. As there are so much energy costs in operating desalination plants, new hybrid process which is more effective should be researched. A geothermal VMD (vacuum membrane distillation) hybrid process is a competitive alternative for seawater desalination. Because geothermal energy has significant characteristics of high capacity factor to operate the power plant at full capacity for 24 hour per day, it can be a priority heat source of VMD superior to any other renewable energies such as solar and wind power. In this study, we design a geothermal VMD hybrid process, analyze it economically and finally compare the result with a case of conventional VMD process. Geothermal VMD hybrid process generates $23,822,409 of NPV (net present value) more than the conventional VMD process in case of 5% discount rate. The break-even point between these processes is 5.36 year. Sensitivity analysis indicates that steam cost is the most decisive influence variable to the economic outcome.

Identification of Novel Mutations in Adenosine Deaminase Gene in Korean Leukemia Patients

Kiho Park(박기호) 한국생명과학회 2010 생명과학회지 Vol.20 No.3

백혈병은 조혈모세포의 비정상적인 증식에 의해 일어나서 질환이고, adenosine deaminase (ADA) 유전자는 백혈병의 약물 작용점으로 중요하다. 이러한 연구의 일환으로 한국인 백혈병 환자 20명의 ADA 유전자의 변이를 조사하기 위해 혈액 genomice DNA를 추출하여 염기서열을 결정하였다. 그 결과 nonsense 변이인 F101F 하나, missense 변이 E260K, D8Y 각각 하나, 그리고 외국에서는 보고되지 않은 것으로 정상인에서 IVS6-52에 GC가 도입된 것을 확인하였다. 백혈병 환자와 유전자 변이간에 통계학적인 차이점은 없지만 이러한 연구는 앞으로 백혈병의 진단 마크 개발에 도움이 될 것으로 사료된다. Leukemia is the abnormal increase of hematopoietic progenitor cells in tissues, resulting in anemia, increased susceptibility to infection and impaired blood clotting. The adenosine deaminase (ADA) gene is an important druggable target for the treatment of leukemia patients. Genetic and molecular analyses were performed to determine the effects of ADA gene mutations in 20 leukemia patients in the Korean population. To analyze the relationship between genotype and phenotype, the ADA genomic DNAs - including 1,092 bp of 12 exons and partial intron sequences flanking each exon - were sequenced and compared. In this study, the known mutations in other diseases, more than 50 mutations already reported in patients with severe combined immunodeficiency disease (SCID) and autism, were not found, but two novel mutations in leukemia patients were discovered. They include one nonsense mutation (A>C at nt position 478, F101F) and one missense mutation (G>A at nt position 778, E260K). One missense mutation (G>A at nt position 22, D8Y) was also detected in 20 normal control patients (allelic frequency of 7.5%). Interestingly, subjects in the Korean population retained 2 bp insertion at the intron 6 (IVS6-52insGC), something that has never been shown in other populations. The genetic study to find out the correlation between the mutant alleles and leukemia patients revealed no association statistically (p>0.05). The mutation found in leukemia needs further study to determine its possibility as a molecular marker for the diagnosis of leukemia.

소셜 네트워크 시대의 세대 간 소통 증감 인식차이에 대한 탐색적 연구

박기호(Kiho Park) 한국데이타베이스학회 2017 Journal of information technology applications & m Vol.24 No.1

Due to development of smart and network technologies, social network service (SNS) has become popular in daily life. With increasing use of SNS, the scope of communication has been widened. Lots of activities can be easily shared daily on SNS. Differing with opinions about more activated communication on SNSs, some people have viewpoints that, in some cases, communications may be decreased among SNS users. This research is to investigate whether there may be the differences among generations in the social network age. Major concerns of study are as follows. First, there may be differences in age related to the decrease of communication activities. On the other hand, there may be differences among generations related to the increase of communication. Two research steps have been adopted that the FGI (focus group interview) was to understand. Defining actual communication status was the first step, and an empirical approach, a survey to verify hypotheses, was performed as the second step. Key findings of the study were that older generations perceived communication has been decreased. Research results can provide implications regarding characteristics of SNS communication.

정보시스템 연령별 조직성과와 영향요인간 관계 연구

박기호(Kiho Park) 한국IT서비스학회 2006 한국IT서비스학회지 Vol.5 No.2

  The e-business strategies ultimately pursue creating the maximal value for customers through the competitive advantages and business opportunities newly created on the basis of information technologies. For the realization of e-business strategies, the successful implementation and operation of e-business system must be the crucial activities in and out of an organization. Therefore, in physical world, there were lots of interests that what kind of key factors can lead the success of e-business system. Moreover, in the field of academia also, there have been many research results for investigating and finding out the key success factors for e-business system. However, the perceptual level of the significance of key success factors that organization members perceive can be changed over each phase of system life cycle such phases as introduction, growth, maturity, and decline.<BR>  This study investigated that there might be significant differences in the perceptual level regarding importance of success factors among phases of system life cycle.

조직내 정보시스템의 수명주기에 따른 성공관련 요인 변화

박기호(Kiho Park) 호서대학교 사회과학연구소 2015 社會科學硏究 Vol.34 No.1

e-비즈니스 시스템 도입시 성공요인에 대한 많은 연구가 진행되어 왔다. 기존의 많은연구에서 시스템 도입이전,개발단계 혹은 도입초기의 핵심성공요인에 대한 제안은 많으나 시스템의 도입이후 사용 연한 즉 시스템 연령(system age)이 증가하는과정에서 단계별 성공요인에 대한 연구는 많지 않은 실정이다. 본 연구는 e-비즈니스 시스템의 핵심성공요인이 시스템 연령의 증가에 따라 달라 질수 있다는 가정 하에 시스템 연령별 성공요인의 변화를 탐색하고자 하였다. 연구를 위한 표본으로 48개 기업을 대상으로 315명의 설문응답 결과를 분석하였다. 대상기업은 e-비즈니스시스템(ERP, SCM, CRM)을 사용 중인 기업으로 하였으며, 시스템 사용자와 개발자를 중심으로 조사를 실시하였다. 시스템 연령 구분은 시스템 도입 후 사용기간이 1년 미만(1기), 1-2년 미만(2기), 2-4년 미만(3기), 4년 이상(4기)으로 구분하여 분석하였다. 분석결과 시스템 연령별 조직의 성과에 유의한 영향을 미치는 요인의 종류가 달라지는 것을 확인하였다. 본 연구의 결과는 기업들이 시스템 도입이후 운영과정에서 시스템 성과를 극대화하기 위해 역량을 집중해야할 분야가 무엇인지에 대한 시사점을 줄 수 있을 것이다. To increase the maximal value for customers through competitive advantages and business opportunities newly created on the basis of information technologies is ultimate goal of e-business strategies. For the realization of e-business strategies, the successful implementation and operation of e-business system must be the crucial activities in and out of an organization. Therefore, in physical world, there were lots of interests that what kind of key factors can lead the success of e-business system. Moreover, in the field of academia also, there have been many research results for investigating and finding out the key success factors for e-business system. However, the perceptual level of the significance of key success factors that organization members perceive can be changed over each phase of system life cycle such phases as introduction, growth, maturity, and decline. This study investigated that there might be significant differences in the perceptual level regarding importance of success factors among phases of system life cycle.

사회적 매체(Social Media) 사용빈도가 온∙오프라인 의사소통 증감에 미치는 영향 : 정보교환양의 매개효과에 관한 탐색적 연구

박기호(Park Kiho) 동국대학교 경영연구원 2021 경영과 사례연구 Vol.43 No.1

본 연구는 사회적 매체(실시간 대화앱과 생활공유서비스) 시대에 사회적 매체의 사용빈도가 온오프라인 의사소통 증감에 영향을 미치는 여부와 정보교환량의 매개 효과를 규명하고자 한다. 연구의 동기 및 의문점으로는 첫째, 사회적 매체의 사용빈도가 정보교환의 양에 영향을 줄 것인가? 둘째, 사회적 매체의 사용빈도가 온오프라인 의사소통에 영향을 미칠 것인가? 셋째, 정보교환의 양이 오프라인 의사소통에 영향을 미칠 것인가? 넷째, 사회적 매체의 사용빈도가 의사소통에 영향을 미칠 수 있도록 정보교환의 양이 매개 효과가 있을 것인가? 라는 의문점을 가지고 연구를 진행하였다. 연구 방법은 1단계는 탐색적으로 의사소통 실태에 대해 정성조사 기법인 FGI(focus group interview)를 실시하고, 2단계는 실증분석을 위해 설문 조사하여 실증연구를 진행하였다. 위계적 회귀분석과 경로 분석을 한 결과 사회적 매체의 사용빈도가 증가할수록 정보교환의 양은 증가하였다. 또한, 사회적 매체의 사용빈도가 증가할수록 온라인 의사소통은 증가하였으나 오프라인 의사소통과는 무관하였다. 사회적 매체의 정보교환양은 사용빈도와 온라인 의사소통 간에 부분적인 매개 효과를 보였다. 사회적 매체 사용빈도가 정보교환양 변수보다 온라인 의사소통에 더 큰 영향을 미쳤다. 본 연구에서는 사회적 매체의 사용이 오프라인 의사소통에 통계적 유의성을 보이지 않았음으로 사회적 매체의 등장이 오프라인 의사소통에 부정적 혹은 긍정적 영향을 미친 것으로 보긴 어렵다. The purpose of this study was to investigate whether the frequency of use of social media affects quantity of communication and the mediation effect of information interchange in the age of social media. As a result of hierarchical regression and path analysis, the amount of information interchange was increased as the frequency of use of social media increased. Also, as the frequency of use of social media increased, communication activities were increased, but it was not related to offline communication. The amount of information interchange in social media has a partial mediating effect on frequency of use and communication increase. The frequency of social media use had a greater impact on online communication than information interchange. In this study, the use of social media did not show any statistical significance for offline communication, so it is hard to think that social media had a negative or positive effect on offline communication. This study suggests implications for academia and industry to understand the communication characteristics of the social network service age.

조직 내 구성원간 스마트워크 수용태도 차이에 대한 탐색적 연구

박기호(Kiho Park) 한국데이타베이스학회 2013 Journal of information technology applications & m Vol.20 No.4

Through smart work using by smart technologies, many organizations wish to change traditional working styles. Lots of organizations, however, wish to do work with smartness through adoption of smart work technologies, those are not sure whether smart work will be successful or not till now. Viewpoints of members concerning efficiency and effectiveness from smart work who operate the organizations may be different. Therefore, hopefully, this research tried to investigate whether differences among members of organizations by empirical and exploratory approach. Totally, 118 questionnaires had been collected and performed test of mean difference between groups. As a result, some items such as working place, working methods, flexible time and tension of smartwork showed significant differences among groups and non-leader and leader groups. And, furthermore, from this research I believe that we can have a few insights for successful smart working environment in organizations. For successful smart work, organizations have to try to overcome or minimize differences among members of organization.

국내 우울증 평가도구 타당화 연구의 체계적 고찰-진단적 타당성을 중점으로 : 한국형 우울 선별 도구 개발을 위한 예비 연구

정수연,김신향,박기호,제갈은주,이원혜,최윤영,이승환,최기홍,Jung, Sooyun,Kim, Shin-Hyang,Park, Kiho,Jaekal, Eunju,Lee, Won-Hye,Choi, Younyoung,Lee, Seung-Hwan,Choi, Kee-Hong 대한불안의학회 2017 대한불안의학회지 Vol.13 No.2

Reliable and valid diagnostic screening tools in the primary care setting enable accurate estimation of depression in individuals at risk or in need of treatment, and provide patients with an opportunity to receive optimal treatments. Although there have been extensive studies on screening tools for depression used in domestic mental health settings, there is little consideration and lack of a thorough review of the diagnostic validity of screening tools. In the current review, we selected 13 representative screening tools for depression which were evaluated in a total of 19 validation studies conducted in Korea. We summarized DSM-5 target domains, diagnostic indices, sensitivity, specificity, cut-off scores, and diagnostic validity information for each tool. Finally, the depression measurement expert group was constituted to evaluate the current status of screening tools for depression, and their recommendations for a new screening tool were summarized. This study was conducted as part of the Mental Health Technology Development project to develop the Korean screening tool for depression (K-DEP).

실란 커플링제 프로필트리메톡시실란에 의해 표면 개질된 CaCO₃ 나노입자가 에멀젼과 기포 안정성에 미치는 영향에 관한 연구

이예진 ( Yejin Lee ),박기호 ( Kiho Park ),임종주 ( Jongchoo Lim ) 한국공업화학회 2020 공업화학 Vol.31 No.1

본 연구에서는 실란 커플링제 프로필트리메톡시실란(propyltrimethoxysilane, PTMS)을 사용하여 CaCO₃ 나노입자의 표면을 개질하였으며, 개질된 CaCO₃ 나노입자를 에멀젼 유화제 및 기포 안정화제로의 적용 가능성을 시험하고자 나노입자 표면의 소수성 변화가 기포와 에멀젼의 안정성에 미치는 영향에 관하여 살펴보았다. PTMS에 의한 CaCO₃ 나노입자의 표면 개질은 FT-IR, TGA, DSC 분석을 통하여 확인하였으며, XRD 및 XPS 분석을 통하여 나노입자 표면의 원소 분석을 실행하였다. 또한 부상 시험과 접촉각 측정을 통하여 PTMS 농도가 CaCO₃ 나노입자의 표면 개질에 미치는 영향에 관하여 살펴보았다. In this study, surface modification of CaCO₃ nanoparticles by a silane coupling agent propyltrimethoxysilane (PTMS) was conducted and the effect of surface hydrophobicity on the stability of foam and emulsion was studied in order to test the potential applicability as a foam stabilizer or an emulsifier. The surface modification of CaCO₃ nanoparticles by PTMS was confirmed by FT-IR, DSC and TGA analysis. The atomic concentration of CaCO₃ particle surface treated by PTMS has been also identified by using XRD and XPS analyses. Both floating tests and contact angle measurements were also performed to examine the effect of PTMS concentration on the surface modification of CaCO₃ nanoparticles.