• 한국문헌정보학회지
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• 제57권3호
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• pp.163-190
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• 2023

본 연구는 기술수용모델을 활용하여 기술준비도와 기술수용요인이 인공지능 기반 기술에 대한 공공도서관 사서의 사용의도에 미치는 영향을 분석하였다. 이를 위하여 공공도서관 사서를 대상으로 설문조사를 실시하였으며 총 202명의 설문 데이터를 통계 분석에 활용하였다. 가설검증 결과 첫째, 지각된 유용성에 낙관성은 유의한 정(+)의 영향을 미치는 것으로 나타났고 불편함은 유의한 부(-)의 영향을 미치는 것으로 나타났다. 지각된 용이성에 낙관성과 혁신성은 유의한 정(+)의 영향을 미치는 것으로 나타났으며 불편함은 유의한 부(-)의 영향을 미치는 것으로 나타났다. 둘째, 지각된 용이성은 지각된 유용성에 유의한 정(+)의 영향을 미치는 것으로 나타났으며 지각된 유용성과 지각된 용이성은 모두 사용의도에 유의한 정(+)의 영향을 미치는 것으로 나타났다. 셋째, 사용의도에 낙관성은 유의한 정(+)의 영향을 미치는 것으로 나타났으며, 불안감은 유의한 부(-)의 영향을 미치는 것으로 나타났다. 본 연구는 인공지능 기반 기술에 대한 공공도서관 사서의 인식을 실증적으로 분석하여 향후 인공지능 기술의 도서관 활용에 대한 기초적인 자료를 제공할 수 있을 것으로 기대한다.

• Journal of Pharmaceutical Investigation
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• 제41권1호
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• pp.31-36
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• 2011

$5HT_{2C}$ receptor among fourteen 5-HT subtypes plays important roles in several disorders such as depression, anxiety, epilepsy, schizophrenia and sleep disorders. The purpose of the study is to investigate pharmacokinetic parameters and bioavailability of a newly synthesized selective agonist of $5-HT_{2C}$ receptor, KOPC-20010 (KP10) in rats after intravenous and oral administration for the development of therapeutic anti-obesity agents. KP10 was administered orally (40 mg/kg) or intravenously (20 mg/kg), blood was collected via a catheter, and analyzed by GC/MSD. The calibration curve of KP10 in plasma and urine showed high linearity ($r^2$ >0.999). The retention times of KP10 in plasma and urine were 8.7 and 9.7 min, respectively. After oral administration of 40 mg/kg, pharmacokinetic parameters were calculated as follows; $C_{max}$ value was $1242.9{\pm}1195.5$ ng/mL at $1.1{\pm}0.6$ hr ($T_{max}$). $AUC_{0->24hr}$ and $AUC_{0>{\infty}}$ were $8034.2{\pm}960.7$ and $10464.1{\pm}681.5\;ng{\cdot}hr/mL$, respectively. The terminal half-life was $21.9{\pm}7.6$ hr. $AUC_{0->24hr}$ and $AUC_{0>{\infty}}$ were $4292.4{\pm}523.0$ and $6111.2{\pm}756.2\;ng{\cdot}hr/mL$, respectively, after 20 mg/kg of intravenous administration. The terminal half-life after intravenous administration was $25.1{\pm}9.4$ hr. Bioavailability of KP10 was determined to 86%. The excretion amount into the urine within 48 hr was approximately 4.7 to 6.7% of the dose administered. These data may be beneficial to the anti-obesity drug development of KP10.

• Design & Manufacturing
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• 제13권4호
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• pp.10-16
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• 2019

Semiconductor chip is bonded to the substrate by melting solder bumps. In general, the chip bonding is applied by a Reflow process or a Thermo-Compression(TC) bonding process. In this paper, we introduce a Laser Assisted Thermo-Compression bonding (LATCB) process to improve the anxiety of the existing process(Reflow, TC bonding). In the LATCB process, the chip is bonded to the substrate by irradiating a laser with a uniform energy density in the same area as the chip to melt only the solder bumps and press the chip with a Transparent Compression Module (TCM). The TCM consists of a fused silica header for penetrating the laser and pressurizing the chip, and a piezoelectric actuator (P.A.) coupled to both ends of the header for micro displacement control of the header. In addition, TCM is a structure that can pressurize the chip and deliver it to the chip and solder bumps without losing the energy of the laser. Fused silica, which is brittle, is vulnerable to deformation, so the header may be damaged when an external force is applied for pressurization or a displacement differenced is caused by piezoelectric actuators at both ends. On the other hand, in order to avoid interference between the header and the adjacent chip when pressing the chip using the TCM, the header has a notch at the bottom, and breakage due to stress concentration of the notch is expected. In this study, the thickness and notch length that the header does not break when the external force (500 N) is applied to both ends of the header are optimized using structural analysis and Coulomb-Mohr failure theory. In addition, the maximum displacement difference of the P.A.s at both ends where no break occurred in the header was derived. As a result, the thickness of the header is 11 mm, and the maximum displacement difference between both ends is 8 um.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2006년도 학술대회 1부
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• pp.937-944
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• 2006

Although people's anxiety about the environmental problem has been getting higher, they are not provided good quality of knowledge about the environment. Based on this situation, Ecoblog can be a new type of online community to educate the public in ecological knowledge. Especially, Ecoblog can be utilized as a method of "preventive education", and it will contribute to reduce great amounts of environmental budget to restore contaminated environment to previous condition. Ecoblog also utilizes the concept of blog which user can create and append their site with chosen themes. A weblog or a blog is a non-commercial webpage regularly updated through the use of a blogging software which allows the user to "publish" kinds of amalgamations of text and graphics to the page as posts. The technology offered in Ecoblog is utilizing the concept of 4D place and game metaphor in order to provide users the sense of participation, interaction and immersion among them and the growing community. Thus, it requires applying the CAAD technology by implementing semantically well-defined building data model as a core database to create a 4D virtual community. This research focuses on defining a 4d spatial framework suitable for developing an online ecological community. Through our study, the state-of-the-art of online community has been studied at the first step. Second, the scenario of using EcoBlog described with content, visualization and navigation are defined based on the critical features derived at the first step. Finally, a 4d spatial framework composed of semantic building data model, content and rule database is constructed to propose factors that are necessary to establish an ecological virtual community. In conclusion, our framework could enhance the comprehension and interaction between users and virtual buildings in the ecological community by integrating the concept of game design, 4D CAD and semantic data model. Such framework can be applied to any online community for an educational purpose.

• 대한방사선기술학회지:방사선기술과학
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• 제30권1호
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• pp.61-65
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• 2007

최근 유아들을 위한 병원 환경개선에 관심이 높아지고 있다. 이는 병원이라는 거부감을 최소화하여 환자의 의료서비스에 만족을 높이고자 하는데 있다. 방사선과 또한 기존의 촬영실을 개선하여 유아들의 심리적 안정에 도움을 주어 검사와 치료과정에 긍정적인 결과를 도출하고자 한다. 따라서 본 연구는 방사선과 X선 촬영실 내부 환경의 변화를 통해 유아의 심리적 환경이 어떻게 변화되었는지를 연구하였다. 연구대상은 만 5세 유아 94명을 대상으로 유아촬영실이 환경 변화에 따른 심리적 변화를 측정도구를 통해 분석하였으며, 그 결과 환경개선 이후의 면접설문조사에서 긍정적인 결과를 얻을 수 있었다. 연구결과 유아촬영실의 환경은 심리적 측면에서 매우 중요하며 검사과정에서도 유아들에게 긍정적이며 협조적인 태도를 초래하여 의료서비스의 질을 향상시키는데 도움이 될 것으로 사료된다.

• 셀메드
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• 제5권1호
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• pp.6.1-6.10
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• 2015

Fumaria indica Linn. (Syn: Fumaria parviflora, Fumariaceae) is a wildly grown weed, mentioned and recommended in classical Ayurvedic texts for treatments of variety of ailments including dermatological diseases, topical diseases, cardiovascular complaints, circulatory disease, fever and headache etc. The present pilot study was designed to experimentally verify the possibility that fumarates are the major bioactive principles of Fumaria indica extracts involved in their stress response modulating activities, and to estimate pharmacologicallyactive dose ranges of fumarates and standardized methanolic extract of Fumaria indica (MFI). Effect of single, 5 and 10 daily oral doses of pure fumaric acid (FA), monomethyl fumarate (MMF), dimethyl fumarate (DMF) and MFI was quantified in well validated rodent models viz. apomorphine induced cage climbing, stress induced hyperthermia, and elevated plus-maze tests. Obtained results reveal high efficacy of MFI and pure fumarates possess qualitatively analogous activity profiles in all the three tests. There were no significant difference in the potencies of pure FA, MMF and DMF in the three tests, whereas efficacy of MFI in the elevated plus maze test for anxiolytics was higher than in the other two tests. Efficacies of all the four test agents in all the three tests increased with increasing number of days of oral treatments. Results of these pilot experiments should be helpful for more rational selections of pharmacologically interesting dose ranges and treatment regimens of fumarates and Fumaria indica extracts for further more holistic explorations of their diverse therapeutic potentials.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 2001년도 The Seoul International Simulation Conference
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• pp.231-236
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• 2001

Virtual Reality (VR) is a new technology that enables humans to communicate with a computer, It allows the user to see, hear, fuel and interact in a three-dimensional virtual world created graphically. Virtual Reality Therapy (VRT), based on this sophisticated technology, has been recently used in the treatment of subjects diagnosed with acrophobia. Acrophobia is a disorder that is characterized by marked anxiety upon exposure to heights, avoidance of heights, and a resulting impairment in functioning. Conventional virtual reality systems for the treatment of acrophobia have limitations, such as overly expensive devices or somewhat unrealistic graphic scenes. The goal of this study is to develop an inexpensive and more realistic virtual environment in which to perform an exposure therapy fur acrophobia. It runs on a personal computer, and a virtual scene ova bunge-jump tower in the middle of a large city. The virtual scenario includes an open tin surrounded by props beside a tower, which allows the patient to feel a sense of heights. The effectiveness of the VR environment was evaluated through the clinical treatment of a subject who was suffering from the fear of heights. Based on pre- and post- questionnaires and subjective comments from the subject. This virtual reality environment proved to be an effective and realistic tool fur the treatment of acrophobia.

• 융합보안논문지
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• 제16권5호
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• pp.33-40
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• 2016

신용카드는 기능면에서 현금과 유사하게 사용되어지는 지불수단으로서 이를 이용하는 사용자가 지속적으로 증가해 왔다. 인터넷 및 전자상거래의 발전에 따라 신용카드는 지급결제 수단으로서의 역할이 더욱 증대되었다. 그러나 정보의 집중화 및 온라인화로 인하여 발생하는 위험 또한 급격히 증가함에 따라 신용카드의 부정사용 역시 증가하고 있다. 부정사용의 유형별로는 카드사와 금융당국의 대응방안 마련으로 도난 분실은 감소하고 위변조와 명의도용이 증가하고 있다. 최근 개인정보유출과 간편결제 시행에 따른 금융보안규제 완화로 카드 부정사용에 대한 소비자의 불안감이 커지고 있고 카드 부정사용의 증가는 사회적 비용을 초래할 뿐만 아니라 신용시스템에 대한 금융소비자의 신뢰를 떨어뜨리므로 이에 대한 대책이 필요하다. 따라서 본 논문에서는 카드 운영 체계의 보안문제점을 살펴보고 부정사용을 방지할 수 있는 방안으로 IC단말기로의 조속한 전환, 새로운 보안기술의 도입, 당국의 관리 감독 강화 등을 제시하고자 한다.

• 문화기술의 융합
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• 제6권3호
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• pp.75-82
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• 2020

본 연구는 코로나 19상황에서 대학신입생들의 자아탄력성 정도에 따른 우울감과 심리적 정서 차이를 파악하기 위해 시도되었다. 2020년 4월 6일부터 13일까지 온라인을 통해 설문조사를 실시하였으며, 불충분한 설문을 제외하고 총 220부의 설문자료를 활용하여 결과를 분석하였다. 분석결과, 자아탄력성이 평균미만인 경우가 평균이상인 경우에 비해 신입생들의 우울감 뿐 아니라 코로나 19로 인한 심리적 정서인 불안, 초조, 답답함, 무기력, 분노, 두려움, 혼란, 불신 등 모든 정서에 있어서 통계적으로 유의미하게 더 높은 것을 알 수 있었다. 이러한 결과를 바탕으로 재학생들의 심리적 안정과 정신적 건강을 회복하고 유지할 수 있도록 돕기 위한 대학의 역할과 대처 방안을 몇 가지 제안하였다.

• 핵의학기술
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• 제16권2호
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• pp.87-98
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• 2012

Purpose : This study aims to examine hospital employees' subjective symptoms of VDT syndrome (Video display terminal syndrome) and figure out their effects on health conditions and correlations. Materials and Methods : This study used a structured self-administering questionnaire and gained data from 125 subjects. The questionnaire consists of total 62 questions, and they went through real number, percentage, ${\chi}^2$-terst, t-test, one-way ANOVA, and logistic regression analysis. Results : Regarding the difference in the types of subjective symptoms of VDT syndrome by jobs, there was statistically significant difference in ophthalmic symptoms, systemic symptoms, and musculoskeletal symptoms. About the correlation between the subjective symptom points of VDT syndrome by the types of symptoms, there was statistically significant correlation all in skin trouble, backache, upper limb muscle pain, lower limb muscle pain, fatigue in the head and eyes, and depression or anxiety disorders. There was significant correlation between the subjective symptom points of VDT syndrome and subjective health conditions. Conclusion : Hospital employees' subjective health conditions had significant correlation with subjective symptom points of VDT syndrome. This result shows that as radiologists' and also other hospital employees' working conditions change into VDT environment, VDT syndrome gradually appears more and more. This implies that it is needed to designate not only radiologists but also all the other hospital employees as jobs exposed to the working environment of VDT syndrome and provide preventive measures, education, and publicity for it afterwards.