• International Journal of Computer Science & Network Security
• /
• 제22권5호
• /
• pp.143-148
• /
• 2022

Brain tumor classification is an important process that allows doctors to plan treatment for patients based on the stages of the tumor. To improve classification performance, various CNN-based architectures are used for brain tumor classification. Existing methods for brain tumor segmentation suffer from overfitting and poor efficiency when dealing with large datasets. The enhanced CNN architecture proposed in this study is based on U-Net for brain tumor segmentation, RefineNet for pattern analysis, and SegNet architecture for brain tumor classification. The brain tumor benchmark dataset was used to evaluate the enhanced CNN model's efficiency. Based on the local and context information of the MRI image, the U-Net provides good segmentation. SegNet selects the most important features for classification while also reducing the trainable parameters. In the classification of brain tumors, the enhanced CNN method outperforms the existing methods. The enhanced CNN model has an accuracy of 96.85 percent, while the existing CNN with transfer learning has an accuracy of 94.82 percent.

• 농촌계획
• /
• 제29권3호
• /
• pp.69-78
• /
• 2023

Rural spaces are experiencing an increasing demand for novel functionalities and adaptations driven by technological advancements in agriculture and rural areas. This study aimed to investigate the public perception of rural spaces in the context of evolving agricultural technologies, specifically focusing on photovoltaic power generation, and the ensuing competition among various functions of rural spaces. A survey was conducted with a participant sample of 330, revealing that the majority of respondents prioritize agricultural production as the primary function of farmland. Furthermore, the survey results indicated that the installation of solar panels on farmland is perceived as a complex issue that affects multiple aspects, such as the landscape, local economy, ecological environment, climate change, and income. Additionally, disparities in responses to landscape-related questions were observed based on age, perception of agricultural land functions, and opinions on technological adoption. This finding suggests that the landscape is poised to become a significant factor in future agricultural and rural transformations. The findings of this survey can provide valuable contributions to the preparation of changes catalyzed by advancements in agricultural technology. Moreover, they offer guidance on the key factors that need to be taken into account when introducing new functions to rural spaces.

• 한국프랜차이즈경영연구
• /
• 제8권1호
• /
• pp.5-18
• /
• 2017

Purpose - Although literature has established the relevance of entrepreneurial orientation(EO) in the performance of conventional firms, the constraining nature of franchise arrangement makes one wonders if the same relationship holds for companies operating under the business model. Research design, data, and methodology - Using Nigeria - a country with high potential for franchise growth - as a context, this study aims to explore the relevant entrepreneurial orientation skills exhibited by franchisees and show the extent to which these skills influence their business performance and intention to remain. 26 franchisees purposively selected from six local franchise brands in Nigeria were interviewed. Result and Conclusions - The three classic entrepreneurial orientation factors of innovativeness, proactiveness and risk-taking were found to have varying influence on franchisees' business outcomes. This study answers the calls for more in-depth understanding of the relationship between EO and firm performance generally and, franchise firm performance in particular. The value of this effort lies in the fact that it strengthens theory and updates literature on the subject. Based on the findings, specific recommendations are offered to help improve the practice of franchising in Nigeria.

• 해양환경안전학회지
• /
• 제17권1호
• /
• pp.1-6
• /
• 2011

인간이 환경을 보전 복원하고자 하는 목적은 자연이 인간에게 제공하는 환경서비스를 지속적으로 공급받기 위함이다. 이러한 측면에서 유류오염에 대응하고 복원하는 근본적인 목적은 인간의 생활 및 생산환경의 지속성을 유지하기 위한 것이라 할 수 있다. 즉, 유류유출의 사회경제적 피해영향 및 복원정도 모니터링은 손상된 자연환경의 기능 회복에 중요한 요소이다. 하지만 사회경제적 영향평가는 직간접적 관련자들의 이해와 직결되어 있어 적절한 조사 및 평가 방법을 선택하는 것이 어렵고 결과를 해석하는 것도 어렵다. 본 연구에서는 허베이 스피리트호 유류유출 사고를 대상으로 생활 및 생산환경 피해 모니터링의 주요 지표인 수산, 관광부문의 영향평가를 위해 기존의 문헌 및 통계자료조사 외에 지역주민 체감조사를 병행하였다. 조사 결과, 복원의 수준은 40~50 % 수준이고, 복원정도는 둔화 혹은 감소하고 있는 것으로 나타났으며, 체감조사결과가 문헌 및 통계자료 조사결과 보다 2~10 점 정도 낮은 것으로 평가되었다. 결론적으로 기존의 사회경제적 영향평가를 위해 기본적으로 수행하여 왔던 문헌 및 통계자료를 통한 분석이 피해영향 복원의 지표로 삼기에는 한계가 있음을 보여주었고, 실제 피해지역 주민들이 체감하는 영향과 복원정도에 대한 분석의 필요성을 제기하였다.

• 농촌계획
• /
• 제29권1호
• /
• pp.51-57
• /
• 2023

Although user satisfaction and activation are noting new, factors related to user emotion have been a part of the important subject shared by most people for management. But few studies have known in culture and welfare facilities using closed rural schools. The samples were collected through self-completed a questionnaires, a total of 322 users data were identified by SPSS 25.0 and frequency and descriptive analysis, correlation analysis and multiple regression analysis were performed. The main results are as follows: 1) General user satisfaction of culture and welfare facilities using closed rural schools reach a total or 8.52 points(out of a total of 10 points), 2) significant factors related to user satisfaction are comparative satisfaction, recognition of contribution to the local economy, age, job. A key insight from these results is that most users are satisfied with the culture and welfare facilities using closed rural schools. And relationship between user satisfaction and a variety of variables indicates the essential for differentiation and utilization of services. It is necessary to implement several practical and political strategies taking the context and the needs of users as a way of enhancing the urban and rural welfare services.

• 한국언론정보학보
• /
• 제75권
• /
• pp.83-144
• /
• 2016

<그것이 알고 싶다>는 지상파 영역의 대표적인 시사고발 프로그램으로 그간에 적지 않은 사회적 반향과 관심 그리고 '공분'을 매개해 왔다. 특히 한국 사회 내 주요한 사회적 부조리와 미제사건, 그리고 병리적인 사안들에 관한 기민하고 완성도 높은 스토리텔링의 힘과 미스터리 코드를 통한 정련된 탐구는 이 프로그램이 구축한 특징이자 '전매특허'라고 간주되기도 한다. 한편 지상파 영역의 대표적인 시사 탐사 프로그램들이 심각한 정체와 부진을 보이며 또한 힘이 상당히 소진된 상황에서, 이 프로그램은 적지 않은 수용자들의 관심을 견인하면서 홀로 고군분투하고 있다는 평가를 받기도 한다. 이 글의 목적은 <그것이 알고 싶다>의 역할과 내부 구성원들이 수행하는 노동의 특성, 그리고 제작진이 대면하는 제도적인 압박과 영향을 다면적으로 조명하는 데 있다. 이 작업은 기존의 텍스트 분석만이 아닌, <그것이 알고 싶다>를 만든 경험을 가진 생산주체들의 관점과 경험을 분석의 주요한 자원으로 삼는 생산자연구를 시도한다. 또한 시사고발 프로그램의 공적인 역할과 위기상황이라는 사회정치적인 맥락성 속에서, <그것이 알고 싶다>의 성취와 한계를 상세하게 탐구하고자 한다. 이러한 작업을 수행하면서 이 프로그램의 특성과 명암을 다루는 일련의 관련 기사들과 매체비평, 그리고 언론학자들의 의견서를 보완적으로 참고하였다.

• 한국IT서비스학회지
• /
• 제11권4호
• /
• pp.25-37
• /
• 2012

In recent year, the u-City construction projects which integrate IT technology into urban infrastructures are being pushed forward by many local governments. These projects contain various purposes in an aspect of regional economy : to reinforce a competitiveness of region by increasing efficiency of urban managements and to revitalize regional economy by stimulating the regional high-tech industries that related to u-City construction. In this context, regional economic impact assessment of u-City construction projects is particularly important because, it give us information about effectiveness of u-City construction policy as a stimulus of regional high-tech industries and the policy feasibility of u-City construction projects that can be a base of public projects. However, it is challenging to assess the impact of u-City projects on regional economy properly due to a lack of understanding about industrial classification, and specific industrial inputs related to u-City construction. In this study, we suggest u-City industrial classifications, and specific-industrial inputs induced by u-City construction projects based on associated legislations, business report for a u-City construction, and results from previous studies. Using these classification and industrial input, we also investigate the regional economic impacts of a u-City construction project in Wha-sung and Dong-tan cities employing Input-output analysis. The empirical results suggests that u-City industries have relatively high in production inducement, and value added inducement compared to input of other industrial sectors. These results indicate that regional economic impact of a Wha-sung and Dong-tan u-City construction project are relatively high, but economic impacts of u-City construction projects vary according to the regional industrial structure, and the specific expense accounts of u-City construction projects.

• 유통과학연구
• /
• 제14권4호
• /
• pp.127-134
• /
• 2016

Purpose - Value chain in agriculture refers to direct and indirect activities related to value-added process from raw materials to final products in agricultural industries. In recent years, value chain analysis has become more important in the area of agricultural development. This article reviews the concept and importance of value chain analysis in the context of agricultural development and attempts to suggest improvement strategies. Research design, data, methodology - A literature survey was conducted for value chain analysis for agricultural development. The case of agro-value chain in Cambodia was deeply analyzed based upon interviews with government officers and related experts. Results - It seems that agro-value chain in developing countries are not well developed and does not carry out appropriate functions, compared to developed countries. Because value adding facilities, such as storage, processing and packing plants, milling plants, and etc. are not sufficiently constructed, the quality of agricultural products is low. Especially developing countries may loose opportunities to increase value of their product by exporting their agricultural products as raw materials to neighboring countries. Value adding process is also mainly controlled by traders in local markets or wholesale markets in urban areas. Farmers therefore can get lower share of final value of agricultural products compared to the shares paid to traders. Lastly it is argued that governments of developing countries do not play an active role in developing value chains and do not carry out coordinating functions in an effective and efficient manner. Conclusions - The first step to improve agro-value chain in developing countries is to identify and analyze value chain structure of agricultural products and to make development strategies and implementation programs. For improving value chain of agricultural products in developing countries, it is required to provide not only plans for constructing hardwares, such as wholesale markets, storage facilities, processing and packing plants, and etc., but also plans for improving softwares, such as measures for improving product quality and safety, setting up grade and standard, providing market information, and nurturing producer cooperatives.

• 농촌계획
• /
• 제27권4호
• /
• pp.43-54
• /
• 2021

This study analysed changes in rural tourism between before and after COVID-19 using LDA topic analysis. In order to understand the changes in rural tourism, blog data including the keyword 'Gochang-gun travel' was used. As a result of LDA topic analysis with blog data retrieved, the study found nine topics in 2019 and 2020. 2019 and 2020 are, generally, consistent in topics, but the three topics related to rural experiential tourism that appeared in 2019 did not appear in 2020. In 2020, three new topics emerged: Beach vacations and campings. New travel activities of noncontact with other people(Untact tourism in Korean context) in the COVID-19 era, and The negative impacts on travel businesses and behaviours from COVID-19. Especially, the adverse effects of COVID-19 have made an enormous decline in rural experience tourism destinations and cancellation of local festivals. On the other hand, new tourism activities have emerged due to COVID-19. Those activities have included camping, drive-thru destinations, and cycling. Ecological and natural tourist sites such as Ungok Wetland, Seonunsan Mountain, Seonunsa Temple, and Gusipo Beach appeared. These tourist destinations have a quiet atmosphere and less density place noncontacting with other people when visiting. Also, because overseas travel has become difficult, long-term stay travel in rural areas has appeared. This study indicates that COVID-19 has less impacted rural tourism than other tourism destinations with these positive and negative impacts.

• 벤처창업연구
• /
• 제15권6호
• /
• pp.43-54
• /
• 2020

본 연구는 한 국가와 주변 지역 간 제도적 거리가 해외벤처투자 (Cross-border Venture Capital investment)에 미치는 영향을 연구한다. 상대적으로 벤처투자 경험이 풍부한 국가의 벤처캐피탈은 해외벤처투자를 통하여 해외의 유망한 스타트업을 발굴하고 투자 기회를 선점할 유인이 있으며, 해당 국가의 스타트업의 국제화에도 일조한다고 알려져 있다. 해외벤처투자는 투자자와 스타트업 간의 물리적 거리와 문화적 차이에 따른 정보 비대칭 등의 위험요소가 크기 때문에 해외로 진출하는 벤처캐피탈의 경우 현지화나 현지 투자자와의 파트너십을 통하여 불확실성을 최소화하고자 한다. 그럼에도 불구하고 해외벤처투자에 수반되는 리스크가 상당하기 때문에 벤처투자자는 주로 제도적으로 모국과 유사한 경제에 투자한다고 알려져 있다. 그러나, 기존의 문헌 연구는 주로 모국과 투자국간의 거리와 양국간 투자흐름의 상관관계를 횡단면적으로 분석 (Cross-sectional analysis)했기 때문에 제도적 거리가 해외투자에 미치는 인과관계를 살펴보기란 쉽지 않다. 이 연구는 1999년 유로화 출범시 영국이 유로존에 가입하지 않으며 영국을 둘러싼 주변국가와의 제도적 거리가 증가한 역사적 배경을 사용하여 그 인과관계를 추정하고자 한다. 영국과 유럽대륙의 투자자에 의한 해외벤처투자를 살펴본 결과 유로존 도입 이후 두 지역간 해외벤처투자 흐름이 감소하는 것으로 나타났다. 최근 몇 년 동안 정치적, 경제적 불확실성 및 보호무역주의가 증가하며 탈국제화가 진행되는 추세인 바, 국가 간 제도적 거리가 해외벤처투자에 미치는 영향을 살펴보는 것이 시의적으로 의의를 줄 수 있다고 사료된다.