[청년의 눈으로 본 협동조합 ①] 글로벌 맥락에서의 협동조합 연구, 「ICA 국제 학술 컨퍼런스와 EURICSE 방문기」

이예나 한국협동조합연구소 2015 협동조합네트워크 Vol.- No.69

사업자협동조합의 비즈니스 모델 분석과 적용: 국내・외 사례분석을 중심으로

이예나,이상훈 한국협동조합학회 2019 韓國協同組合硏究 Vol.37 No.2

한국의 사업자협동조합은 협동조합기본법에 근거하여 설립된 협동조합 중 가장 큰 비중을차지한다. 그러나 양적 성장에 비하여 사업자협동조합의 질적인 운영 수준은 그리 양호하지 못하다. 이러한 상황을 개선하기 위해서는 사업자협동조합의 비즈니스 모델에 대한 충분한 이해가 필요하다는 인식 하에, 본 연구에서는 사업자협동조합의 비즈니스 모델을 분석하고 진단할 수 있는 분석틀을 제시하고자 한다. 분석틀에서는 비즈니스 모델 캔버스의 구성원리를 적용하여, 사업자협동조합이 조합원의 비즈니스 모델에 제공할 수 있는 가치제안을 효율성 제고를 통한 비용구조의 개선, 고객접점 확대 및 관계강화를 통한 수익구조 개선, 핵심 가치제안 자체의 수준 제고 또는 새로운 가치제안 창출 등 세 가지로 구분하였다. 또한 이를 기존 사례들에 적용해 본 결과, 성공적으로 운영되는 사업자협동조합은 사업자인 조합원들에게 분명한 가치제안을 제공하고 있음을 알 수 있었다. 본 연구의 분석틀은 사업자협동조합들의 비즈니스 모델을 진단하는 데에 유용한 도구로써 장기적으로 조합의 설립목적을 달성하고 지속가능성을 높이는 데 기여할 수 있다. The type of entrepreneurs’ cooperatives takes the greatest number of cooperatives in Korea established based on the Framework Act on Cooperative. Compared to its growth in the number and support from the government, the business status of each entrepreneurs’ cooperative is quite insufficient. To improve this situation, the researchers recognize that it is necessary to understand the business model for entrepreneurs’ cooperatives. Thus, the researchers suggest the framework for entrepreneurs’ cooperatives to check and analyze their own business model. With reference to the structure of a business model canvas, the framework classifies the type of entrepreneurs’ cooperative’s value proposition into three: improving cost structure of member’s business by increasing efficiency, improving revenue structure of member’s business through better channel and customer relationship, and strengthening the level of key value propositions or creating new value propositions of the member’s business. The study also applies this framework to three entrepreneurs’ cooperatives and analyzes their business model. As a result, the study discovered that successful entrepreneurs’ cooperatives have clear value proposition to their members. The framework suggested could work as a useful checking tool for entrepreneurs’ cooperatives and contribute to achieving their purpose as well as enhancing sustainability in the long term.

Carbon-Fiber Based Microelectrode Array Embedded with a Biodegradable Silk Support for In Vivo Neural Recording

이예나,공찬호,장진우,전상범 대한의학회 2019 Journal of Korean medical science Vol.34 No.4

Background: Recently, carbon fibers have been utilized to develop a depth-type microelectrode array for chronic neural recording. Since the diameter of carbon fibers is smaller than the conventional electrodes made of metal wires or microfabricated silicon, the carbon fiber electrodes showed an improved capability for chronic neural recording with less tissue damages. However, the carbon fiber based microelectrodes have a limitation of short insertion depth due to a low stiffness. Methods: We proposed a carbon fiber based microelectrode array embedded with a mechanical support structure to facilitate the penetration into the deeper brain. The support is made of biodegradable silk fibroin to reduce the reactive tissue responses. The 4-channel carbon fiber based microelectrode arrays were fabricated and accessed in terms of electrochemical impedance, recording capability for 1-month implantation in rat hippocampi. The electrodes with tungsten supports were fabricated and tested as a control group. Immunohistochemical analysis was performed to identify the reactive glial responses Results: The carbon fiber based electrode arrays with silk supports showed about 2-fold impedance increase 2 weeks after implantation while the number of active electrodes decreased simultaneously. However, after 1 month, the electrode impedance decreased back to its initial value and the percentage of active electrodes also increased above 70%. Immunohistochemical staining clearly showed that the electrodes with silk supports induced less reactive glial responses than that with tungsten supports. Conclusion: The proposed carbon fiber based microelectrode array is expected to be used for long-term in vivo neural recording from deep brain regions with the minimized reactive tissue response.

Strategies for Minimizing Glial Response to Chronically-implanted Microelectrode Arrays for Neural Interface

이예나,전상범 대한의용생체공학회 2014 Biomedical Engineering Letters (BMEL) Vol.4 No.2

For several decades, the intracortical penetrating microelectrodearrays have been widely employed for the purpose of neuralrecording and stimulation in nervous system. However, thelong-term application is limited due to the tissue reaction tothe implanted electrode array. The tissue response includesthe degeneration of nerve cells as well as the formation ofdense glial sheath adjacent the implanted electrode calledgliosis. The glial encapsulation deteriorates the capacity ofelectrodes to communicate with neurons by electricallyisolating the devices from the neighboring brain regions. Toexamine and overcome these critical obstacles of microelectrodearray for chronic applications, a number of studies have beenperformed to date including the reduction of electrode geometry,the use of flexible materials for electrode substrates, thepharmacological suppression of the cellular reaction, and theoptimized surgical techniques. In this review, the studies toclarify the mechanism of the glial response in central nervesystem (CNS) will be described and a variety of strategiesfor minimizing the glial responses in CNS will be examined.

건강한 청년 성문화 조성을 위한 ‘성(性)장톡’ 소통 툴킷(Tool-Kit) 개발 -정부⋅대학⋅기업 연계를 중심으로-

이예나,이하은,구유리 한국디자인문화학회 2022 한국디자인문화학회지 Vol.28 No.4

Due to the social atmosphere that neglects sexual communication, young people are having difficulty in sexual self-assertion, such as not being able to demand active contraception. These difficulties cause social problems such as unwanted pregnancy, experience of artificial abortion, and the occurrence of sexual mediated diseases due to unprepared sexual intercourse. To solve this problem, the purpose of the study was to establish correct sexual values of young people and improve their ability to make healthy sexual decisions. In this study, the theoretical review of youth sex culture, the current status and limitations of sex education at home and abroad were analyzed, and based on this, surveys, in-depth interviews, and co-creation workshops were conducted to set the problem of sex culture and desirable direction of sex culture. In addition, through in-depth interviews with experts, specific areas for improving youth sex culture were confirmed. By synthesizing the previous survey, five personas were designed according to behavioral mapping and a journey map was produced. Based on the pain points of the persona derived from the travel map, a four-step process was established to diagnose, establish, practice, and plan. The results and contents of the study are as follows. First, a ‘Couple Growthtalk.’ toolkit in the form of a workbook was produced. The toolkit consists of four stages: activities to establish sexual values and activities for sexual decision-making, and was produced with an emphasis on improving sexual communication between lovers. Second, through the support of the Seoul Metropolitan Government’s governance project, the ‘Couple Growthtalk.’ toolkit in the form of an easy-to-access mobile web has been actually implemented, and it can be expected to spread through the Kakao Talk sharing function. Third, for the ‘Couple Growthtalk.’ toolkit, we tried to increase the participation of young people by producing promotional videos in collaboration with companies. Based on the previous text, This study has theoretical significance in that it discovered sexual communication problems of youth sex culture that were not covered in previous studies and derived solutions through service design methodology, and has practical significance in that a real prototype for a healthy youth sex culture was implemented by the collaboration of government-company-individual through the Bottom- Up method that young people work as a main body. This is expected to help the growth of a society of healthy sex culture where the happiness and safety of young people are realized in the future. 성적 의사소통을 금기시하는 사회적 분위기로 인해 청년들은 적극적인 피임을 요구하지 못하는 등 성적 자기주장의 어려움을 겪고 있다. 이러한 어려움은 원하지 않은 임신과 인공유산 경험, 준비되지 않은 성교로 인한 성매개성 질환 발생 등의 사회적 문제를 야기한다. 이를 해결하기 위해, 본 연구는 청년의 올바른 성적가치관의 형성과 건강한 성적 의사 결정을 내릴 수있는 능력 향상을 목적으로 한다. 이를 위해 청년 성문화의 이론적 고찰과 국내외 성교육 현황을 분석하였고, 이를 바탕으로 설문조사, 심층 인터뷰 그리고코크레이션 워크숍을 진행하여 수요자가 생각하는 현성문화의 문제점과 바람직한 성문화의 방향성을 설정하였다. 또한, 전문가 심층 인터뷰를 통해 구체적인청년 성문화의 개선 필요 영역을 종합하여 행동 매핑에 따라 5명의 퍼소나를 설계하고 여정 맵을 제작하였다. 여정 맵에서 도출한 퍼소나의 페인 포인트를 바탕으로 진단하기, 확립하기, 연습하기, 계획하기 4단계의 프로세스를 구축하였다. 연구 결과 및 내용은 다음과 같다. 첫째, 워크북 형태의 ‘성장톡’ 툴킷을 제작하였다. 툴킷은 성적 가치관을 성립하기 위한 활동과 성적 의사 결정을 위한 활동으로 총 4가지 단계로 구성되며, 연인 간 성적 의사소통 향상에 중점을 두어 제작하였다. 둘째, 서울시거버넌스 사업의 지원을 통해 접근성이 용이한 모바일 웹 형태의 ‘성장톡’ 툴킷을 실제 구현하였으며, SNS 공유기능을 통해 확산을 기대할 수 있다. 셋째, ‘성장톡’ 홍보영상을 제작하기 위해 기업과 협업하여청년들의 참여를 높이고자 하였다. 본 연구는 선행연구에서 다루어지지 않았던 청년성문화의 성적 의사소통 문제를 발견하고 서비스 디자인 방법론을 통해 솔루션을 도출했다는 점에서 이론적 의의가 있다. 또한, 정부-기업-개인이 협업하여바텀-업(Bottom-Up) 방식으로 청년이 주체가 되어건강한 청년 성문화를 위해 실제 프로토타입을 구현했다는 점에서 실무적 의의가 있다. 이는 향후에 청년의 행복과 안전이 구현되는 건강한 성문화 발전에 기여할 것으로 기대된다.

Sintering of porous ceramic of diatomite according to molding pressure and PEG content

이예나,안석환,남호석,남기우 한양대학교 세라믹연구소 2018 Journal of Ceramic Processing Research Vol.19 No.6

Diatomite powder, a naturally occurring porous raw material, was used to make ceramic materials with porosity and highstrength. The sintering behavior of the diatomite powder at various sintering temperatures suggests that diatomite monolithswith a high porosity and strength can be prepared at 1100 oC. The compressive strength of the sintered diatomite monolithsincreased as the sintering temperature increased, and the molding pressure of 2MPa and the binder of 18.6 wt.% wereexcellent. When the sintering temperature rises, the diatomite powder is melted, and its pores gradually disappear. SEMimages show that strengthening begins with the formation of inter-particle bonds at a low sintering temperature.

3차원 Arbitrary Lagrangian-Eulerian 기법을 사용한 자유 대기 중 폭발 해석의 최적 격자망 크기 산정

이예나,이태희,박다원,최영준,홍정욱,Yena Lee,Tae Hee Lee,Dawon Park,Youngjun Choi,Jung-Wuk Hong 한국전산구조공학회 2023 한국전산구조공학회논문집 Vol.36 No.6

폭발 수치해석 기법 중 Arbitrary Lagrangian-Eulerian(ALE)는 구조물의 파괴뿐만 아니라 폭발 이후 충격파의 전파 과정까지 관찰할 수 있는 장점이 있다. 그러나 동적 해석 시 유한요소 모델의 격자망 크기가 일정 수준 이하로 감소하게 되면 해석 결과의 신뢰도가 부정확해진다. 본 연구에서는 ALE 수치해석 기법을 활용하여 대기의 격자망 크기가 해석의 정확도에 미치는 영향을 조사한다. 다양한 조건의 격자망 크기와 폭발 중량을 갖는 대기 중 폭발모델을 구축하고, 폭발 중심으로부터 거리에 따른 폭발압력을 관찰한다. 수치해석과 실험에서 얻은 최대 폭발압력 결과에 대해 평균 제곱 오차를 계산하여 최적의 격자망 크기를 제안하고, 제안된 크기를 바탕으로 폭발물 중량과 대기의 최적 격자망 크기에 대한 상관관계를 분석한다. 본 연구는 다양한 중량을 가진 폭발물 해석에서 최적의 격자망 크기를 제공함으로써 신뢰성이 향상된 폭발 수치해석 모델 개발에 도움이 될 것으로 기대한다. The arbitrary Lagrangian-Eulerian (ALE) method has been extensively researched owing to its capability to accurately predict the propagation of blast shock waves. Although the use of the ALE method for dynamic analysis can produce unreliable results depending on the mesh size of the finite element, few studies have explored the relationship between the mesh size for the air domain and the accuracy of numerical analysis. In this study, we propose a procedure to calculate the optimal mesh size based on the mean squared error between the maximum blast pressure values obtained from numerical simulations and experiments. Furthermore, we analyze the relationship between the weight of explosive material (TNT) and the optimal mesh size of the air domain. The findings from this study can contribute to estimating the optimal mesh size in blast simulations with various explosion weights and promote the development of advanced blast numerical analysis models.

Experiences of Nurses Caring for Hemodialysis Patients: A Qualitative Meta-Synthesis Study

이예나,김은영 한국성인간호학회 2022 성인간호학회지 Vol.34 No.2

Purpose: We aimed to systematically review and synthesize qualitative evidence on the experiences of nurses caring for hemodialysis patients. Methods: We used Noblit and Hare’s meta-ethnography. Seven databases (PubMed, EMBASE, CINAHL, Web of Science, RISS, KISS, National Assembly Electronic Library) were used for the literature search. There were no restrictions placed on publication dates. A total of 10 studies published in English and Korean up until July 2021 were finally selected for review. Results: Three themes were identified from the literature review, which were then divided into six subthemes: acquiring the technical skills of hemodialysis, responsibility for prolonging patients’ lives, and maintaining stable hemodialysis in patients’ daily lives. Conclusion: The results of this study provide basic data that emphasizes the specific role of nurses in the hemodialysis unit, a specialized area of nursing, and can be utilized as educational material for hemodialysis unit nurse education.

The Effect of Storytelling Constructs on Consumer Attitude and Purchase Intention in Consumer Cooperatives

이예나,이상훈 한일경상학회 2014 韓日經商論集 Vol.65 No.-

In marketing field, story can be used as an effective communication tool conveying information of the company. This study aims to explore the potential of storytelling methods as a marketing communication tool for consumer cooperatives, and to analyze the effect of storytelling on consumer - as well as a member of cooperatives - attitude and purchase intention using an empirical study. Generally, consumers recognize that primary products producers have many difficulties in the process of production. This cognition can be basis to elicit consumers’ emotional attitude such as sympathy or empathy. Especially, consumer cooperatives in Korea have various policies to build a close relationship between producers and consumers. Therefore we assume that members of consumer cooperatives develop distinctive producer-consumer relationship and this could serve as a one of conditions under which storytelling–especially emotional one - appeals to consumers more effectively. For these purposes, we set three constructs of storytelling - main character of storytelling, message appealing type, and the object type of the message - as independent variables. We conduct five type of survey, each of which has a different test ad that includes differently combined elements of independent variables. We can summarize the results of the survey as follow. First, any kind of producer’s emotional storytelling has more influence on consumer attitude than producer’s rational one. Second, consumers feel friendlier toward producer’s emotional storytelling of primary product than that of processed product. Third, the relation between consumer attitude and purchase intention was shown positively. By finding conditions to utilize storytelling effectively, this study provides insights to consumer cooperatives and other organizations facing similar marketing condition.

학습 동기가 학업 성취도에 미치는 영향과 자기효능감의 매개 효과

이예나 한국언어연구학회 2019 언어학연구 Vol.24 No.2

The study analyzed the effect of type of learners' learning motivation on their achievement in learning English. The mediating effect of self-efficacy was analyzed as a factor influencing the academic achievement. In addition, the study analyzed the difference in the effects according to the gender, grade, and major of English learners. The results showed that all types of learning motivation, including external motivation, intrinsic motivation, ideal motivation, and inevitable motivation, had a positive influence on academic achievement. The mediating effect of self-efficacy was found to be completely mediating in the process of external motivation affecting academic achievement. In addition, self-efficacy was found to have a full mediating effect even when inevitable motivation affects academic achievement. As a result of analyzing the effect of interaction with learning motivation using three variables--gender, major, and grade--as learner’s characteristics, only gender interacted with learning motivation and affected their grades in English