• 생명과학회지
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• 제20권11호
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• pp.1640-1647
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• 2010

혈전성 질환을 예방, 개선할 수 있는 안전한 항혈전제를 개발하기 위해, 일반적으로 항혈전 효과가 있다고 알려진 식용 해조류 35종(갈조류 17종, 홍조류 11종 및 녹조류 7종)을 대상으로 메탄올 추출물을 조제하고, 이들의 thrombin time (TT), prothrombin time (PT), activated partial thromboplastin time (aPTT)을 평가하였다. 트롬빈 저해(TT)의 경우 35종 중에서 감태, 곰피, 대황, 넓패, 패, 알송이모자반 및 야마다모자반에서 강력한 활성을, 프로트롬빈 저해(PT)의 경우 트롬빈 저해활성이 나타난 7종 중 야마다모자반을 제외한 6종에서 강력한 활성을 확인하였으며, 혈액응고인자 저해(aPTT)에서는 감태, 곰피, 대황, 넓패, 패, 알송이모자반 및 톳에서 강력한 활성이 나타났다. 선별된 8종의 시료를 대상으로 다양한 농도에서 항혈전 활성을 평가한 결과 알송이모자반에서 가장 강력한 활성을 확인하였으며, 곰피, 대황 및 넓패가 효과적이었다. 항혈전 활성과 해조류 추출물의 총 flavonoid, 총 polyphenol, 총당 및 환원당 함량과의 상관 관계를 검토한 결과, 활성물질은 flavonoid성 물질로 추측되었으며, 선별된 8종은 총 flavonoid 함량 및 총 polyphenol 함량이 매우 높은 특징을 나타내었다. 본 연구 결과는 경제적이면서 대량공급이 가능한 식용 해조류로부터 신규의 안전한 항혈전제 개발이 가능함을 제시하며, 야마다모자반과 톳은 트롬빈 또는 혈장내 응고 인자에 대한 특이 저해제로 개발 가능함을 제시하고 있다.

• 디지털융복합연구
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• 제11권7호
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• pp.255-260
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• 2013

본 연구는 커뮤니케이션 매체의 중독여부에 따른 정신건강과 매체사용의 차이를 알아보고자 시도하였다. 자료수집은 2012년 3월 12일부터 5월 13일까지 대학생 250명을 대상으로 면접 및 설문조사를 하였다. 연구결과는 첫째, 이동전화 사용시간의 경우 2시간 이상이 중독군은 39.2%, 비중독군은 4.0%로 중독군이 유의하게 높게 나타났다($X^2$=8.51, p=.00). 둘째, 우울정도는 자주 우울한 경우가 중독군이 비중독군보다 4.0배 유의하게 높았다(OR=4.0, 95% Cl=2.4-36.9). 이러한 결과를 토대로 볼 때 커뮤니케이션 매체의 중독적 사용을 해소하기 위해 체계적이고 주기적인 교육 및 긍정적인 측면 등의 다양한 환경을 조성하는 것이 필요하다고 본다.

• International Journal of Computer Science & Network Security
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• 제22권11호
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• pp.177-183
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• 2022

Thanks to the informatization of society, complex and high-tech devices are being introduced in all areas of human life, and the latest technologies are being actively improved in the modern, globalizing world. The article deals with the issues of using information and communication technologies in legal activities. It also covers the main types of such activities: law-making, law enforcement, and interpretive activity. Since there is an increase in the flow and accumulation of legal information, it is practically impossible to use traditional methods of working with legal information. The article considers and analyzes the role of information and communication technologies in modern legal activity. It is necessary to reveal the principles, concepts, conditions, and factors of their development and develop theoretical and practical recommendations for the use of such technologies in order to solve legal tasks. The authors of the article raise the issues of increasing the efficiency of legal activity, as well as the integration of information technologies into practical legal activity and their use for collecting, storing, searching, and issuing legal and reference information. Much attention is paid to the specific use of automated data banks and information retrieval systems in legal practice that ensure the accumulation, systematization, and effective search for legally important information. The development of such technologies leads to the creation of comfortable conditions for a lawyer in the course of their professional activity. Currently, legal activity cannot exist without telecommunication technologies, legal reference systems, and electronic programs. The authors believe that due to the use of the latest information technologies, the time for making legal decisions has significantly accelerated, the process of searching and systematizing evidence has been worked out, and it has become possible to quickly and efficiently find information on adopted laws and legal acts.

• International Journal of Advanced Culture Technology
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• 제9권4호
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• pp.18-28
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• 2021

This study surveyed how retirees' evaluation of starting food service business affects the effectiveness their new business and quality of life, based on personal factors such as entrepreneurship and business-starting capability and environmental factors by using questionnaires. Bootstrapping was carried out in order to find out factors affecting rapidly changing new business environments and retirees' initial intent to start a business so as to verify basic hypothesis about relation between retirees' evaluation of starting food service business (social, economic, and psychological effects) and the effectiveness of their new business and quality of life and confirm whether the effectiveness of the new business acts as a medium between the evaluation of starting food service business and quality of life. In addition, PLS-MGA was performed in order to verify whether the correlations among test factors can be varied according to the kind of job the target retirees had. Having examined the basic thesis, it was found that social and economic factors had significant positive effect on the effectiveness of the new business, and social and psychological factors had significant positive effect on the quality of life. Having analyzed whether the effectiveness of new business acted as a media between evaluation of starting food service business and quality of life, there was no significant effect as a medium. Having studied whether the kind of job of the retirees controlled or affected the relations among evaluation of starting food service business, effectiveness of new business and quality of life, the results were as follows: in the office job retiree group, the greater economic factor led to increase of effectiveness of new business, while social and psychological factors influenced the quality of life; In the physical labor group, the higher social factor resulted in higher effectiveness of new business, which showed significant positive effect on the quality of life. Having researched about which element is considered to be most important in starting food service business, the most important element was found to be dish/menu, followed by staff management, accounting management, business management, and service education. Having analyzed relation between accomplishment and important consideration for starting food service business, "managers with entrepreneurship," "appropriate distribution of time to prepare for starting business," and "operation of practical field education programs" showed higher importance compared to the degree of satisfaction, so it is needed to more concentrate on the above matters. This study intends to raise retirees' awareness of starting business and help them live better life based on the analysis results, and further suggest detailed mechanism and specific operations of factors affecting retirees' decision making on starting business, such that they can use the information as basic materials to make better choices that can lead to successful business.

• 한국학교ㆍ지역보건교육학회지
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• 제22권4호
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• pp.25-37
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• 2021

Objectives: Reportedly, the main influential factors on students' adaptation to their college life were social support, stress, adaptation resilience, self-esteem, and satisfaction with their major. This study tried to find the actual influence of these factors on dental hygiene students, and to find an intervention plan for improving their adaptation to college life and preventing their dropout. Methods: An online questionnaire survey had been conducted with 270 dental hygiene students from June 21 to July 2, 2021. The collected data were analyzed with the use of SPSS Program Version 22.0. Results: Firstly, students living together with their family, those satisfied with their major, and those doing a club activity related to their major scored high points in terms of the adaptation to college life. In addition, the adaptation points were high in those whose school entrance motivation was arbitrary, and in those who entered in the dental hygiene department in consideration of their aptitude. Secondly, college life stress was high in those whose entrance motivation was in other persons' will, those who entered in the department due to their school record and occupation, rather than aptitude, those who were also doing a part-time job, and those whose economic level was low. Thirdly, adaptation resilience, social support, and self-esteem were high in those who were highly satisfied with their major, those who entered in the department in consideration of aptitude, and those whose economic level was high. Fourthly, the biggest influential factor on their adaptation to college life was college life stress, followed by self-esteem, satisfaction with major, and adaptation resilience in order. Conclusion: Given all the results, it is necessary to analyze dental hygiene students' levels of stress, self-esteem, social support, and adaptation resilience from the beginning of their entrance, and to operate a school life adaptation program in line with school years. If any customized support and training are given to these students to deal with a variety of stress situations resiliently and wisely and achieve their jobs successfully, it is expected to improve their self-esteem and adaptation resilience, and thereby increase their adaptation to college life.

• 농촌지도와개발
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• 제12권2호
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• pp.137-150
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• 2005

여성농업인이 결코 남성보다 적지 않게 농업에 종사하고 있으며, 농가소득에 기여를 함에도 노동에 대한 가치가 인정되지 않고 있다. 농업주종사 여성의 82% 이상이 농업농촌기본법상의 '연간 90일 이상 농업에 종사'하여 실제 농업인이지만, 이를 증명하기 곤란한 상태이다. 이러한 농업인 증명의 어려움으로 정부 정책 및 제도, 상재해 보험 보상시 여성농업인 노동에 대한 가치가 반영되지 못하고 있다. 본 연구에서는 개인의 기록이 법정에서 증거자료로 인정된 사례와 법률관계자 자문에 따라 실제 농업에 종사하나 증명이 곤란한 여성 등 가족종사자의 농업인 증명이 가능한 생활일지를 개발하였다. 생활일지 사용자의 편리성을 향상을 위한 현장적용 시험 결과에서 생활일지 기록 습관은 회계관리, 경영활동 및 효율적인 시간관리 등 여성의 전문농업경영 능력을 향상 시킬 수 있을 것으로 나타났다. 실제 농업종사자를 직업인 인정이 가능한 법으로 정비되고 제도적 지원이 더 궁극적인 목표이지만, 현실적으로 농업인 범위에서 제외되는 농업종사자를 위한 지위인정 방안이 시급히 마련되어야 한다는 측면에서 생활일지 개발의 의미가 있는 것이다. 이러한 생활일지의 목적이 실생활에서 반영되어 여성농업인의 노동을 증명하는 자료로써 활용해야 할 것이며, 적극적으로 판례를 만들어가는 노력이 필요할 것이다. 더불어 이러한 생활일지 기록활동은 경제활동 주체로서의 자기인식과 농업경영과 관련된 지식 및 자료의 축적에 도움을 제공함으로써, 여성 농업인의 농업경영능력 향상에 기여를 할 것으로 기대된다.

• 유통과학연구
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• 제16권3호
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• pp.79-86
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• 2018

Purpose - Many retail stores tend to use scarcity-laden message in order to influence consumers, where scarcity refers to insufficiency of product supply or time of availability. For example, inside stores, the displayed products are often accompanied by scarcity message such as 'exclusive offer, limited time only.' According to past research, scarcity has a positive effect on product evaluation, since scarcity can acts as a signal of consumer demand, and thus product quality. Prior studies argue that consumers face a scarce product, they logically infer that other consumers buying the product in large numbers cause the scarcity. We propose that scarcity can be interpreted as a sales tactic artificially created by retail stores in order to increase sales of product. Research design, data, and methodology - We use a persuasion knowledge perspective framework to develop our hypotheses. In the present research, we show that product curation type is a key variable that moderates consumer response to scarcity, and thus the scarcity effect on product evaluation. Results - In this research, we showed when scarcity-laden message was used inside the store using consumer-centric curation message, scarcity had a positive effect on product evaluation. In contrast, when scarcity-laden message was used inside the store using marketer-centric curation message, the positive of scarcity message on product evaluation was diluted. Conclusions - Our study makes two important contributions to the literature on consumer response to scarcity. First, we identify a variable - namely, product curation type - that determines when either 'scarcity = good' or 'scarcity = marketing tactic' interpretation is likely to be dominant. Second, we cite persuasion knowledge perspective to explain the moderating function of product curation type in a retail store-related scarcity context. This research is relevant to practitioners, such as brand manager, retail environment manager, and advertising agencies, for the effective use for the scarcity-laden message in retail. The proposed moderator can operate in many real-life situations in retail where consumers are exposed to scarcity. And curation message related to scarcity has been facilitated by the inner-retail activities. These factors of the marketplace indicate that the boundary conditions of scarcity can have a significant effect on real-life consumer judgment.

• 디지털융복합연구
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• 제18권6호
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• pp.217-223
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• 2020

본 연구는 기업이 개별 기업수명주기에 따라 선택하는 구조조정 전략이 재무적 곤경에 직면할 경우에 기업회생에 긍정적인 영향을 줄 수 있다는 증거를 제시하는 것을 목적으로 한다. 본 연구는 2001년부터 2016년까지 한국거래소에 상장되어 있는 기업의 3,593개 표본을 대상으로 로짓회귀분석을 실시하였다. 기업수명주기별로 구조조정 전략의 선택에 차이가 있다는 실증분석결과, 기업 수명주기에서 성장기에 속한 재무적 곤경 기업은 사업 및 자산구조조정을 이용하여 기업을 회생시키고, 쇠퇴기에 속한 재무적 곤경 기업은 재무적구조조정을 이용하여 기업을 회생시키는 것으로 확인되었다. 국내 기업들의 구조조정이 증가하는 상황에서 본 연구의 결과는 기업의 수명주기에 따라 적합한 구조조정의 전략을 선택하는 것이 중요함을 시사한다.

• Investigative Magnetic Resonance Imaging
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• 제22권1호
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• pp.65-70
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• 2018

The objective of this study was to describe a radiofrequency (RF) coil design for in vivo sodium magnetic resonance imaging (MRI) for use in small animals. Accumulating evidence has indicated the importance and potential of sodium imaging with improved magnet strength (> 7T), faster gradient, better hardware, multi-nucleus imaging methods, and optimal coil design for patient and animal studies. Thus, we developed a saddle-shaped sodium volume coil with a diameter/length of 30/30 mm. To evaluate the efficiency of this coil, bench-level measurement was performed. Unloaded Q value, loaded Q value, and ratio of these two values were estimated to be 352.8, 211.18, and 1.67, respectively. Thereafter, in vivo acquisition of sodium images was performed using normal mice (12 weeks old; n = 5) with a two-dimensional gradient echo sequence and minimized echo time to increase spatial resolution of images. Sodium signal-to-noise ratio in mouse kidneys (renal cortex, medulla, and pelvis) was measured. We successfully acquired sodium MR images of the mouse kidney with high spatial resolution (approximately 0.625 mm) through a combination of sodium-proton coils.

• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 2017년도 춘계공동학술대회
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• pp.122-122
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• 2017

Recently, environmental problems have become an area of growing interests. In-situ monitoring of water quality is fundamental to most environmental applications. The accurate measurement of nitrate concentrations is fundamental to understanding biogeochemistry in aquatic ecosystems. Several studies have reported that one of the most feasible methods to measure nitrate concentration is the use of Ion Selective-electrodes (ISEs). The ISE application to water monitoring has several advantages, such as direct measurement methodology, high sensitivity, wide measurement range, low cost, and portability. However, the ISE methods may yield inconsistent results where there was a difference in temperature between the calibration and measurement solutions, which is associated with the temperature dependence of ionic activity coefficients in solution. In this study, to investigate the potential of using the combination of a temperature sensor and nitrate ISEs for minimizing the effect of temperature on real-time nitrate sensing in natural water, a prototype of on-site water monitoring system was built, mainly consisting of a sensor chamber, an array of 3 ISEs, an waterproof temperature sensor, an automatic sampling system, and an arduino MCU board. The analog signals of ISEs were obtained using the second-order Sallen-key filter for performing voltage following, differential amplification, and low pass filtering. The performance test of the developed water nitrate sensing system was conducted in a monitoring station of drinking water located in Jeongseon, Kangwon. A temperature compensation method based on two-point normalization was proposed, which incorporated the determination of temperature coefficient values using regression equations relating solution temperature and electrode signal determined in our previous studies.