• Journal of the Korean Wood Science and Technology
• /
• v.14 no.2
• /
• pp.43-49
• /
• 1986

In the light of real situation of Korean timber resources, it is no wonder that Korean economy depends on a lot of imported timber, however, we only need to draw attention how have they kept the balance of payment in the field of forest products trade for the last few decades, until the second oil crisis in 1979. Afterwards, the gap between imports and exports of forest products in terms of value has been widened so far, on account of various reasons inside and outside. However, according to national economic policy to drive more active exportation, new policy and strategy to expend world market of forest products urgently expectable in order to shorten the gap between imports and exports of forest products in the future. On the other hand, the current timber importation policy should be reconsidered, not only to support optimum domestic timber price level so as to compensate timber producers' cost but also to make suitable economic environment to induce new investments in the field of private forestry sector.

• Korean journal of applied entomology
• /
• v.18 no.1 s.38
• /
• pp.49-53
• /
• 1979

Paddy lands around industrial areas in Gyeonggi and Jeonbuk provinces are increasingly concerned about pollution by heavy metals. This stimulated the quantitative analysis of copper, zinc, lead and cadmium in the soil from the aress concerned. Results obtained are summarized as follows: 1. Heavy metal contents of the soil from Sue-Myun, Siheung-Gun, Gyunggi province were 20.95 ppm of Cu, 226.46 ppm of Zn, 84.17 ppm of Pb, and 2.62 ppm of Cd, respectively. Those of Anyang, Kimpo, and Jeonbuk areas were as low as the natural background levels, about 10 ppm. 2. The contentration of heavy metals of the river valley soils tended to increase from upper stream to the lower. This seemed to be caused by the fact tat disposed water from plants flows to the lower stream and metals contained in the water accummlate in the soils around the lower stream. 3. Cadmium content was exceptionally lower than 0.2 ppm in all the areas tested. The present concentartion of cadmium is not of the extent to which any injury could occur to rice plants.

• Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
• /
• 2000.11a
• /
• pp.82-82
• /
• 2000

16세기부터 씌워진 과실봉지는 초기 병해충을 방지할 목적만으로 사용되었지만, 현재는 방균과 방충의 효과와 함께 자연현상의 최적화를 위한 차광성, 발수성, 투기성 및 투습성 등 을 조절하며 과실의 외관과 과중 및 당도에까지 영향을 미치는 바 과실봉지의 기능성 부여 를 위해서는 고도의 기술력이 요구되고 있다 하겠다. 실제 과실봉지를 적용하는 한 예로서 “배”를 들 수 있는데, 그 중 황금배는 흑반병, 각 종 병충해 및 동녹으로 인한 상품가치의 하락으로 현재 수요를 충족시키지 못하고 있는 실 정이다. 과피의 비정상적인 코르크화로 인해 발생하는 동녹은 과피의 물리적 할렬과 생리적 장해에 의해 발생하는 것으로 알려져 있다. 과실이 비대해짐에 따라 과피의 기공(과점)이 할 렬하면서 코르크화가 진행되는데 그 발생정도나 시기는 배의 품종에 따라 다르나 일반적으 로 코르크화는 기상조건, 특히 습도와 밀접한 관련이 있다. 황금배의 재배에 봉지를 적용하면 과피의 코르크화가 억제되는데 봉지 내의 대기 환경 이 외기보다 안정적으로 유지되고 직사광선이나 농약 및 마찰로부터 과실을 보호해 주기에 동녹이 어느 정도 방지될 수 있다. 만일 과실이 외부로부터 받는 자극을 적절히 조절하는 기능성 봉지가 제 역할을 다해줄 수 있다면 동녹을 방지하여 외관을 개선함은 물론, 배의 성장에 적합한 미시대기 조건을 제공함에 따라 보다 높은 당도를 지닌 대과의 재배가 가능 하다고 판단된다. 그러나 기존의 황금배봉지는 동녹의 정도를 완화시킬 뿐 완전히 방지할 수 없었으며, 봉지를 적용한 재배조건에서의 동녹 발생기구를 정확히 이해하지 못했었기에 효과적으로 봉지의 기능을 개선하는 것이 불가능하였다. 과실의 미려도는 과실의 맛과 함께 그 가치를 결정짓는 중요한 물성으로서 우리나라 황 금배 재배환경과 특성에 알맞은 배봉지의 제작이 선결될 때, 배 품질의 향상, 안정된 공급이 가능하게 될 것이며 아울러 농가의 수입증대와 수출 경쟁력 강화가 이루어질 수 있을 것으 로 판단된다. 이러한 측면에서 황금배 재배농가가 당면한 동녹발생의 문제점을 효과적으로 해결하고 아울러 기타 과실의 재배용 봉지의 기능성 부여를 위한 새로운 과실 봉지 처리 기 술의 개발이 절실히 요구되고 있다. 상기한 측면에서 본 연구에서는 과실봉지를 적용했을 때 봉지 내의 미시대기 조건이 봉 지의 특성에 따라 변화되는 양상을 파악하기 위해서 실험실적으로 field 조건을 모사하고 봉 지 내의 온도 및 습도를 측정 분석하였다. 아울러 봉지 종류간에 동녹발생 정도가 상이한 점에 예의 주시하여 다양한 봉지의 적용실험을 통해 최적의 과실봉지 조건을 탐색하였다.

• Journal of Korean Society of Forest Science
• /
• v.95 no.1
• /
• pp.73-81
• /
• 2006

This study has the object of deriving schemes for not only securing safety of chestnuts, which is the most important forest product in terms of both production and exportation, to consumers with implementing persistent production of them in harmony with the environment, but also producing environmentally friendly chestnuts that can contribute to the increase of a farm household's income through price differentiation from other chestnuts, which are grown by generally accepted ways. In order to do this, I performed an analysis of the reality and outcome from the management of farm households that produce environmentally friendly chestnuts. The result of the analysis demonstrated some problems such as poor establishment of farming skills in a beginning stage, administrative problems with weeding operations and prevention of blight, difficulty in ensuring distribution channels and high production cost. Therefore, propelling productive expansion of environmentally friendly chestnuts after resolving these problems requires many supports and ideas: establishment and diffusion of farming skill system under the cooperation of civil and government organizations, construction of environmentally friendly INM (Integrated Nutrient Management) and IPM (Integrated Pest Management), creation of production areas for improving productivity, introduction of 'Institution of Income Conservation for Environmentally-Friendly Production' that can help farmers to preserve integrity of income on their switchover to production of environmentally friendly chestnuts from generally-grown chestnuts, and finally strong and persistent promotion of environmentally friendly chestnuts towards existing farmers and consumers.

• Journal of Korea Technology Innovation Society
• /
• v.14 no.3
• /
• pp.431-465
• /
• 2011

Focusing on open innovation which is regarded as an important framework for strengthening technological innovation capabilities, in this study empirical analysis is conducted on Korean manufacturing companies, particularly based on the survey results of 149 domestic manufacturing companies that carry out innovation activities in order to identify influence factors for open innovation activities. Analysis on the influence factors of open innovation activities categorized into characteristics of environment, firm-specific characteristics, and characteristics of institutions revealed that characteristics of environment in terms of the degree of market competition and technological changes influence outside-in open innovation activities. Such results suggest that companies respond to increased market competition or technological changes by promoting research and development (R&D) and maintaining or acquiring market competitiveness through introduction of external technology and utilization of external information by means of research collaboration, user innovation, and so on. In terms of firm-specific characteristics, outside-in open innovation activities are influence by R&D personnel, R&D investment, number of international business, export, and openness of corporate culture while inside-out open innovation activities are influenced by characteristics of international organization and CEO's capabilities. In order for companies to strengthen outside-in open innovation activities emphasis on research personnel, R&D input factors such as research funds are necessary whereas to increase inside-out open innovation activities organization solely responsible for international affairs should be established while the CEO needs to focus on open and cooperative entrepreneurship rather than internal technological innovation activities. In terms of characteristics of institutions, outside-in innovation activities are influenced by technological networking whereas inside-out innovation activities are influenced by networking for development of technology and the presence in industrial cluster. This means that the government needs to establish industrial clusters and try to expand technological networking to facilitate open innovation activities.

• Journal of Agricultural Extension & Community Development
• /
• v.21 no.1
• /
• pp.219-244
• /
• 2014

Agricultural extension service in Ethiopia was started in early 1950s with mandate of transferring local research outputs and technologies to farmers, and importing technologies and improved practices from abroad. Extension service provided in this early time was limited to areas surrounding the experiment stations. Since then, Ethiopian Agricultural extension service has passed through at least five stages: the land grant extension system, the Comprehensive Package Programs, the Minimum Package Projects, the Peasant Agricultural Development Program, and the Participatory Demonstration and Training Extension System (PADETS). The comprehensive package extension program was initially implemented in selected pilot areas and eventually to be scaled up to cover about 90% of the farming community within 15-20 years time. The program used demonstration plots managed by development agents and used to train farmers organized through various field days. However, since all of these programs were operational in only small areas, the vast majority of the country was out of their reach. Through Participatory Demonstration and Training Extension System, the extension service in Ethiopia has come under the spotlight and government debates and external reviews are putting additional scrutiny on the system. Despite this long history, the system is still in its infancy in terms of coverage, communication and institutional pluralism. Currently in Ethiopia the Agricultural extension is provided primarily by the public sector, operating in a decentralized manner through which extension is implemented at the district level. Therefore, the main focus of this paper is to scrutinize the past, the present and the future Agricultural extension system in Ethiopia.

• Management & Information Systems Review
• /
• v.32 no.5
• /
• pp.157-174
• /
• 2013

In this research I investigate different firm characteristics between environment-friendly companies which are awarded by the Government and companies which violate environmental regulations. I set up three hypotheses in terms of managers' environmental attitude and firms' characteristic in technical, financial and structural aspects, considering environmental experts' opinions and findings of previous papers. Main research findings are as follows. First, both acquisition of the ISO 14001 certificate and ownership structure are used as proxy of top management attitude towards environmental decision-making. It is hypothesized that it is found that the certificates of ISO 14001 is a good proxy to represent top management environmental attitude and a firm with the certificate would have less likelihood of violation. Second, it is hypothesized that technical ability affects violation tendency of environmental regulations. It is found that as R&D investment increases, violation likelihood of environmetal regulations decrease. It can be conjectured that R&D investment may improve technical abilities of observing environment regulations. Third, it is investigated whether a firm's financial capability affects violation tendency of environmental regulations. Fourth structural aspects of a firm such as capital intensity, the number of employees and export ratio are investigated. It is found that a firm with more employees per sale amount tends to violate environmental regulations. It is not found any effects of expert ratio nor capital intensity on violation tendency of environmental regulation.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.20 no.4
• /
• pp.470-478
• /
• 2019

As the growth of the domestic defense industry is remarkable regarding technology level and export size, technology protection is necessary. Particularly, there is a need to apply anti-tamper measures to prevent critical technologies from illegally being taken out of weapon systems. However, there is no security protection strategy and system built yet in ROK. Precedent studies discussed the trend analysis and technical research for specific protective techniques, and the application of anti-tamper using limited procedures was provided. Recently, methods of how to select the technology for protection were studied based on risk management. Nonetheless, these studies cannot be associated with the acquisition process for the whole life-cycle, having difficulty with actual development and evaluation of the weapon systems. The objective of our study is to derive the system requirements of the weapon system for which anti-tamper measures have been determined to apply. Specifically, requirements items suitable for the development of anti-tamper weapon systems were derived based on ISO/IEC 19790, the CMVP standard for the development and verification of cryptographic modules. Also, its utilization in technical reviews and test & evaluations was presented. The usefulness of the research results was confirmed through inductive inference and comparative evaluation. The result can be expected to play a role in initiating extensive activities needed for technology protection of the weapon systems.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.22 no.2
• /
• pp.85-91
• /
• 2021

The DAPA (Defense Acquisition Program Administration) has been operating the DQ mark certification since 2012 to certify the superior technology and quality of munitions. On the other hand, the current DQ mark certification can not directly provide DQ mark certification to software because it is impossible to verify the quality of software alone. Therefore, this study analyzed domestic/overseas software quality evaluation/certification standards to find a way to verify the quality of software in the DQ mark certification. Among them, the method of applying the GS certification according to the international standard ISO/IEC 25000 series to the DQ mark certification was suggested as an improvement plan, and DQ mark certification verified the quality of software and provided certification. An attempt was made to expand the certification scope of DQ mark certification. This paper proposes that the DQ mark can be given to the system software by introducing GS certification to the DQ mark certification. To this end, an improved procedure for omitting the factory audit and verification by submitting a GS certificate for product evaluation is proposed. This is expected to increase defense exports using the granted DQ mark and improve the quality of defense software products through GS certification.

• Journal of Mushroom
• /
• v.18 no.4
• /
• pp.339-343
• /
• 2020

This study aimed to optimize total nitrogen (TN) content in the medium and the growth temperature to improve the shelf life of Pleurotus eryngii Keneutari No. 2. We investigated the growth characteristics and changes in the O2/CO2 content in polypropylene film and performed sensory evaluations during cold storage under 1.5%, 1.8%, 2.1%, and 2.4% TN and at temperatures of 9℃, 12℃, and 15℃. The diameter and weight of the fruit bodies tended to increase with increasing nitrogen content, regardless of the growth temperature, and the highest weight per bottle (149.5 g) was obtained at 12℃ and 2.4% TN. Regardless of the nitrogen content, leaf color deepened with decreasing temperature. The gas concentration in the film, which changes depending on storage time, was maintained for the longest period at 9℃ and 2.1% TN. The sensory evaluation revealed no difference between the different nitrogen conditions tested, and the odor, discoloration, and decay were similar at 15℃ and 9℃ until day 28 of storage.