• 제목/요약/키워드: Scientific productivity

검색결과 119건 처리시간 0.034초

Impact of the Mekong River Flow Alteration on the Tonle Sap Lake in Cambodia

  • Lee, Giha;Kim, Joocheol;Jung, Kwansue;Lee, Hyunseok
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2015년도 학술발표회
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    • pp.231-231
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    • 2015
  • Rapid development in the upper reaches of the Mekong River, in the form of construction of large hydropower dams and reservoirs, large irrigation schemes, and rapid urban development, is putting water resources under stress. Many scientific reports have pointed out that cascade dams along the Mekong River lead to serious problems: not only hydrologically but also a decline of agricultural productivity due to a decrease of sediment supply in the Mekong Delta and a change of fish amount due to drastic change of the water environment. Cambodia and Vietnam, located in the lowest Mekong basin, are gravely affected by radical changes of hydrologic regime due to Mekong River developments. In particular, the Tonle Sap Lake in Cambodia is very sensitive to the flood cycle and flow variation of the Mekong River as well as inflow water quality from the Mekong River. More than 50% of Cambodian GDP depends on the primary industries such as agriculture, fishing, and forestry, and the Tonle Sap Lake plays an important role to support the national economy in Cambodia. In addition, Cambodian people usually take nourishment from the fish of Tonle Sap Lake. This research aims to assess the impacts of the Mekong river flow alternation on the hydrologic regime of the Mekong River - Tonle Sap Lake. We carried out rainfall-runoff-inundation simulation using CAESER-LISFLOOD for integrated water resource management in the Tonle Sap Basin and then analyze flood inundation variation of the Tonle Sap Lake due to the scenarios. Furthermore, the simulated inundation maps were compared to MODIS satellite images for model verification and hydrologic prediction.

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Current Status and Future Prospect of Sericultural Science and Technology in the World

  • Junliang Xu;Hua, Yue-Jin
    • 한국잠사학회:학술대회논문집
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    • 한국잠사학회 1997년도 Progress and Future Development of Sericultural Science and Technology 40th Anniversary Commemoration Symposium
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    • pp.1-21
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    • 1997
  • Silk is praised "Queen of Fiber", which wrote a glorious page in the history of human adornment culture. Thanks to the development of science and technology, silk production has been increased dramatically during last half century. Nowadays, as "Healthy Fiber" silk lets all the globe to be forming the "Silk Boom" Like in other scientific fields, a great deal of progress has been made in sericultural science and technology, which also accelerated the development of multipurpose utilization of sercultural recourses. The main tendency of the sericulture development is raising the quality of cocoon, and at the same time, increasing the output per unit mulberry area and labor production efficiency. The chief measure of raising the cocoon quality is breeding and selecting the new mulberry and silkworm varieties, preventing and curing the diseases and pests and improving the environment of mounting, and the symble for increasing the labor productivity is carrying out the technological system of saving labor and operation ease, and enlarging the production scale. As a natural protein fiber, silk will be still a favorite with human in the next century, because its structure and properties can not be replaced by other any fiber. The 21st century is the biological time, and measures of developing sericulture will use the achievement on the field of molecular biology and biotechnology to carry out the molecular breeding, development regulating, silkworm rearing industrializing, exploiting the new silk and its new usage, utilizing the sericultural resources, and producing the special protein from silkworm as a host of expressing exogenous genes so that make the sericulture to contribute more what it can do for the human being.

농업-ICT 융·복합 기술 동향 및 표준화 추진방향 (A study on standardization strategy based on technological trends of agriculture-ICT convergence)

  • 민재홍;박주영;강신각
    • 한국정보통신학회:학술대회논문집
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    • 한국정보통신학회 2014년도 춘계학술대회
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    • pp.715-718
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    • 2014
  • 현재 국내 농업은 많은 발전을 이루었지만 지구 온난화 등으로 발생하는 재난 재해 극복, FTA 등으로 인한 수입 농산물 극복, 미국 유럽 등의 선진국 중심의 과학화된 실용화 기술에 대한 대처 등 농업을 주체로 하는 다양한 산업에서 국제 경쟁력을 확보하기 위한 노력이 지속되어야 할 분야이다. 한편 국내 ICT 기술은 세계 최고 수준임으로 기존의 농업기술에 정보화기술, 자동제어 기술 등 IT 고유의 기술을 융합시켜 농업의 생산 유통 소비 전 과정에 걸쳐 생산성향상, 효율성 증대, 품질향상 등과 같은 고부가가치를 창출 방안 모색이 필요하다. 따라서 본 논문에서는 국내 농업의 현황, 농업-ICT 융합 도입 및 기술 현황, 표준화 동향 등을 분석하여 우리나라가 선도할 농업-ICT 융합 기술 분야를 도출하고 향후 표준화 및 활성화 방안을 제시하고자 한다.

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Intercomparison Exercise at Harshaw 6600, DVG-02TM, and D-Shuttle Dosimeters for the Individual Monitoring of Ionizing Radiation

  • Kim, Dmitriy Spartakovich;Murayama, Kentaro;Nurtazin, Yernat;Koguchi, Yasuhiro;Kenzhin, Yergazy;Kawamura, Hiroshi
    • Journal of Radiation Protection and Research
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    • 제44권2호
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    • pp.79-88
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    • 2019
  • Background: The main goal of experiments is to compare various operational and technical characteristics of D-Shuttle semiconductor personal dosimeters of the Japanese company "Chiyoda Technol Corporation" and Harshaw thermoluminescent dosimeters (TLD) manufactured by "Thermo Fisher Scientific" and DTL-02 of the Russian Research and Production Enterprise (RPE) "Doza" by their occupational and calibration exposure at various dose equivalents from 0.5 to 20 mSv of gamma-radiation. Materials and Methods: Besides dosimeters DTL-02, D-Shuttle and Harshaw TLD, there were also used: (1) the primary reference radionuclide source Hopewell Designs IAEA: G10-1-12 with $^{137}Cs$ isotope (an error is not more than 6% and activity is 20 Ci), and (2) the verification device UPGD-2M of RPE "Doza" and installed in the National Center for Expertise and Certification of the Republic of Kazakhstan (Kapchagai, the National Center for Expertise and Certification). Results and Discussion: The main results of researches are the following: (1) TLDs for Harshaw 6600 and DVG-02TM have an approximately equal measurement accuracy of the individual dose equivalents in the range from 0.5 to 20 mSv of gamma-radiation. (2) Advantages of dosimeters for Harshaw 6600 are due to the high measurement productivity and opportunity to indicate the dose on the skin $H_p$(0.07). Advantages of DVG-02TM consist of operation simplicity and lower cost than of Harshaw 6600. (3) D-Shuttles are convenient for use in the current and the operational monitoring of ionizing radiation. Measurement accuracy and 10% linearity of measurements are ensured when D-Shuttle is irradiated with dose equivalents below 1 mSv at the equivalent dose rate not higher than $3mSv{\cdot}hr^{-1}$. This allows using D-Shuttle at a routine technological activity. Conclusion: The obtained results of experiments demonstrate advantages and disadvantages of D-Shuttle semiconductor dosimeters in comparison with two TLD systems of DVG-02TM and Harshaw 6600.

Innovative Approaches to Training Specialists in Higher Education Institutions in the Conditions of Distance Learning

  • Oksana, Vytrykhovska;Alina, Dmytrenko;Olena, Terenko;Iryna, Zabiiaka;Mykhailo, Stepanov;Tetyana, Koycheva;Oleksandr, Priadko
    • International Journal of Computer Science & Network Security
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    • 제22권12호
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    • pp.116-124
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    • 2022
  • Information and communication technologies used in the social sphere are born due to the development of computer technologies. The main task of the distance learning process in higher education institutions is not to provide information, but to teach how to obtain and use it. The purpose of the article: to identify innovative approaches in the training of specialists in higher education institutions in the context of distance learning. Various innovative approaches to organizing the work of students of higher educational institutions in the context of distance learning are considered. Based on the conducted research, it is concluded that each of the approaches described by us outlines the study of the phenomenon of professional training of a specialist in the condition of distance learning. All the described approaches significantly contribute to the improvement of professional training of specialists, encourage students to self-improvement, professional development and enrich their professional competence in modern conditions. The emergence and spread of innovative technologies means not only a change in the activity itself and its inherent means and mechanisms of its implementation, but also a significant restructuring of goals, value orientations, specific knowledge, skills and abilities. Therefore, the current stage of the development of civilization, scientific and technological progress requires the emergence of such specialists who would have broad humanitarian thinking, would have good psychological training, would be able to build professional activities according to laws that take into account the relationship between economic productivity and creativity, as well as the desire of the individual for constant renewal, self-realization. Only such qualities will help you master the specifics of innovative technologies well. We see the prospects in the study of innovative approaches to training specialists in higher education institutions in the condition of distance learning in foreign countries.

낭비수준과 외부위험에 영향을 받는 공급망 성과 평가 (Evaluation of Supply Chain Performance Affected by Waste Level and External Risk)

  • 최종문;김채복
    • 예술인문사회 융합 멀티미디어 논문지
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    • 제6권6호
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    • pp.395-402
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    • 2016
  • 과학기술의 발전과 수요의 변화로 인해 기업들은 빠른 환경변화에 직면하고 있다. 기업들은 이러한 환경변화에 대응하기 위해 공급망의 역량을 강화하기 위해서 노력하고 있다. 개선과정에서는 공급망의 참여자들 간의 협력적인 관계가 중요하며, 기업들은 내부적 활동을 다른 조직들에게 외주를 지고 프로세스 상에서의 낭비를 제거하기 위해 노력하고 있으며, 결과적으로 공급망은 지속적으로 간결하고 효과적인 상태가 되어간다. 본 연구는 외부 위험 하에서 낭비수준의 정도가 공급망 성과에 미치는 영향을 확인하고자 한다. 본 연구의 결과는 낭비 수준이 공급망 성과에 음의 영향을 미치고 있음을 보여준다. 또한 공급망 성과에 대한 낭비수준의 영향을 조직이 직면한 위험상황에 따라서 다르게 나타나고 있음을 보여준다. 즉 낭비의 수준이 높을수록 위험은 낭비수준과 공급망 성과 사이에서 조절효과가 있다. 이는 공급망 성과를 개선하기 위해서 내부적 효율성을 강화하는 것이 중요하지만, 외부적 위험을 적절히 관리하는 것이 우선적으로 선행되어야 함을 시사한다.

A Review of the Application of Constructed Wetlands as Stormwater Treatment Systems

  • Reyes, Nash Jett;Geronimo, Franz Kevin;Guerra, Heidi;Jeon, Minsu;Kim, Lee-Hyung
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2022년도 학술발표회
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    • pp.162-162
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    • 2022
  • Stormwater management is an essential component of land-use planning and development. Due to the additional challenges posed by climate change and urbanization, various stormwater management schemes have been developed to limit flood damages and ease water quality concerns. Nature-based solutions (NBS) are increasingly used as cost-effective measures to manage stormwater runoff from various land uses. Specifically, constructed wetlands were already considered as socially acceptable green stormwater infrastructures that are widely used in different countries. There is a large collection of published literature regarding the effectiveness or efficiency of constructed wetlands in treating stormwater runoff; however, metadata analyses using bibliographic information are very limited or seldomly explored. This study was conducted to determine the trends of publication regarding stormwater treatment wetlands using a bibliometric analysis approach. Moreover, the research productivity of various countries, authors, and institutions were also identified in the study. The Web of Science (WoS) database was utilized to retrieve bibliographic information. The keywords ("constructed wetland*" OR "treatment wetland*" OR "engineered wetland*" OR "artificial wetland*") AND ("stormwater*" or "storm water*") were used to retrieve pertinent information on stormwater treatment wetlands-related publication from 1990 up to 2021. The network map of keyword co-occurrence map was generated through the VOSviewer software and the contingency matrices were obtained using the Cortext platform (www.cortext.net). The results obtained from this inquiry revealed the areas of research that have been adequately explored by past studies. Furthermore, the extensive collection of published scientific literature enabled the identification of existing knowledge gaps in the field of stormwater treatment wetlands.

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서식적합도와 생태지표를 이용한 거제한산만 굴양식장의 입식밀도 산정 (Estimation of Stocking Density using Habitat Suitability Index and Ecological Indicator for Oyster Farms in Geoje-Hansan Bay)

  • 조윤식;이원찬;홍석진;김형철;김정배;박정현
    • 해양환경안전학회지
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    • 제18권3호
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    • pp.185-191
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    • 2012
  • 대부분의 국내 어장들은 반폐쇄성 내만에 집중되어 있으며, 장기 양식과 높은 입식밀도에 의한 연안오염에 매우 취약한 위치를 점하고 있기 때문에, 지속적인 양식을 위하여 어장관리가 매우 중요한 실정이다. 이를 위한 방안으로 적지선정과 생태학적 환경수용력을 함께 고려한 최적 입식밀도 산정이 될 수 있다. 거제한산만 굴양식장의 입식밀도 산정을 위하여 0.0이 비적지, 1.0이 적지임을 나타내는 서식적합도(Habitat suitability index)와 생태지표인 여과압 지표(Filtration pressure indicator)가 이용되었다. 거제만의 서식적합도는 0.75로서 한산만 0.53보다 높았으며, 이는 거제만이 굴양식에 좀 더 적합함을 의미한다. 생태지표는 연안특성에 따라 다른 입식밀도를 나타내었으며, 결과적으로 거제만의 굴양식장에 대하여 현 입식밀도와 비교하여 평균 40%, 한산만은 평균 60% 저감 입식하여야 생태학적 환경수용력을 만족하는 것으로 나타났다. 입식밀도의 산정은 현재 국내 양식업이 직면한 연안오염, 환경악화, 생산성 감소에 대한 해결책을 제공할 수 있으며, 이 연구는 어장관리 정책 설립에 대한 과학적 근거로 활용될 수 있을 것이다.

서식지 적합지수를 이용한 진동만 미더덕과 주름미더덕의 어장적지평가 (Suitable Site Assessment using Habitat Suitability Index for Styela Clava and Styela Plicata in Jindong Bay)

  • 조윤식;홍석진;이원찬;김형철;김정배
    • 해양환경안전학회지
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    • 제19권6호
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    • pp.597-605
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    • 2013
  • 본 연구에서는 미더덕양식장이 밀집되어 있는 남해안의 진동만 10개 정점에 대하여 미더덕과 주름미더덕의 양식순기에 맞추어 계절별(7월, 10월, 1월, 4월)로 실시하였으며, 어장 서식지 적합지수를 위한 어장평가인자로 수온, 클로로필 a, 부유입자물질, 해수유동, 염분, 용존산소 포화도를 이용하였다. 미더덕과 주름미더덕의 성장과 어장환경 상관성을 나타낼 수 있도록 각 인자들에 대한 그래프가 작성되었으며, 서식지 적합지수 산정결과 진동만의 서쪽해역(HSI 0.32~0.41)이 동쪽해역(HSI 0.19~0.27)보다 높은 적합지수를 보였다. 이러한 결과는 미더덕과 주름미더덕의 단위생산량과 유의한 상관성($R^2$=0.834, P<0.01)이 있음을 보였다. 본 연구는 과학적 어장적지평가를 통하여 지속적인 생산성을 위한 어장관리에 기여를 할 수 있을 것으로 판단된다.

자료포락분석을 활용한 장애인복지관의 효율성 분석 (Efficiency analysis of the community welfare centers for people with disabilities using data envelopment analysis)

  • 최경호;신현욱
    • Journal of the Korean Data and Information Science Society
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    • 제26권1호
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    • pp.111-121
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    • 2015
  • 지금까지 장애인복지관 운영에 대해서는 사업 특성상 장애인복지 전반에 관한 긍정적이거나 또는 관대한 인식을 가져왔다. 그런데 장애인복지관이 다양한 산출물을 효율적으로 얻기 위해서는, 합리적이고 과학적인 장애인복지관의 운영과 만족할 만한 수준의 서비스가 수혜자들에게 제공되고 있는지에 대한 실증적인 연구가 필요하다. 이에 본 연구에서는 자료포락분석을 이용하여, 전국 176개 장애인복지관에 대한 상대적인 효율성을 탐색해 보고, 시사점을 도출해 보고자 한다. 그 결과 전체 176개 장애인복지관에 대한 기술 효율성 평균은 0.4488, 순수 기술적 효율성은 0.6040 그리고 규모 효율성은 0.7080인 것으로 나타났다. 자료포락분석을 활용한 장애인복지관 효율성 탐색 결과를 바탕으로 제언과 한계를 제시하면 첫째, 기술 효율성분석을 적용해 보았을 때, DMU2, DMU3, DMU8, DMU9, DMU11, DMU13, DMU14가 평균이상으로 나타났는데, 이는 지역적인 사회 경제적 편차와 함께, 사회복지 시설 예산의 지방 이양에 따른 정책적 요소에 대한 고려가 있어야 할 것으로 보이며, 둘째, 규모의 효율성 분석 결과, DMU1, DMU5, DMU12, DMU16 등의 규모효율성이 낮은 장애인복지관들은 직원수, 세입액, 면적규모 등의 투입요소 규모를 확대함으로써 운영의 효율성 개선이 기대되어지며, 마지막으로 본 연구가 향후 다양한 분야에서 제공되는 재활서비스에 대한 효율성 분석과 성과평가의 계기가 될 것으로 기대된다.