WorldWideScience

Sample records for technology agricultural aircraft

  1. A study of the cost-effective markets for new technology agricultural aircraft

    Science.gov (United States)

    Hazelrigg, G. A., Jr.; Clyne, F.

    1979-01-01

    A previously developed data base was used to estimate the regional and total U.S. cost-effective markets for a new technology agricultural aircraft as incorporating features which could result from NASA-sponsored aerial applications research. The results show that the long-term market penetration of a new technology aircraft would be near 3,000 aircraft. This market penetration would be attained in approximately 20 years. Annual sales would be about 200 aircraft after 5 to 6 years of introduction. The net present value of cost savings benefit which this aircraft would yield (measured on an infinite horizon basis) would be about $35 million counted at a 10 percent discount rate and $120 million at a 5 percent discount rate. At both discount rates the present value of cost savings exceeds the present value of research and development (R&D) costs estimated for the development of the technology base needed for the proposed aircraft. These results are quite conservative as they have been derived neglecting future growth in the agricultural aviation industry, which has been averaging about 12 percent per year over the past several years.

  2. Hydrogen aircraft technology

    Science.gov (United States)

    Brewer, G. D.

    1991-01-01

    A comprehensive evaluation is conducted of the technology development status, economics, commercial feasibility, and infrastructural requirements of LH2-fueled aircraft, with additional consideration of hydrogen production, liquefaction, and cryostorage methods. Attention is given to the effects of LH2 fuel cryotank accommodation on the configurations of prospective commercial transports and military airlifters, SSTs, and HSTs, as well as to the use of the plentiful heatsink capacity of LH2 for innovative propulsion cycles' performance maximization. State-of-the-art materials and structural design principles for integral cryotank implementation are noted, as are airport requirements and safety and environmental considerations.

  3. Commercial aircraft composite technology

    CERN Document Server

    Breuer, Ulf Paul

    2016-01-01

    This book is based on lectures held at the faculty of mechanical engineering at the Technical University of Kaiserslautern. The focus is on the central theme of societies overall aircraft requirements to specific material requirements and highlights the most important advantages and challenges of carbon fiber reinforced plastics (CFRP) compared to conventional materials. As it is fundamental to decide on the right material at the right place early on the main activities and milestones of the development and certification process and the systematic of defining clear requirements are discussed. The process of material qualification - verifying material requirements is explained in detail. All state-of-the-art composite manufacturing technologies are described, including changes and complemented by examples, and their improvement potential for future applications is discussed. Tangible case studies of high lift and wing structures emphasize the specific advantages and challenges of composite technology. Finally,...

  4. Study of future world markets for agricultural aircraft

    Science.gov (United States)

    Gobetz, F. W.; Assarabowski, R. J.

    1979-01-01

    The future world market for US-manufactured agricultural aircraft was studied and the technology needs for foreign markets were identified. Special emphasis was placed on the developing country market, but the developed countries and the communist group were also included in the forecasts. Aircraft needs were projected to the year 2000 by a method which accounted for field size, crop production, treated area, productivity, and attrition of the fleet. A special scenario involving a significant shift toward aerial fertilization was also considered. An operations analysis was conducted to compare the relative application costs of various existing and hypothetical future aircraft. A case study was made of Colombia as an example of a developing country in which aviation is emerging as an important industry.

  5. Agricultural Technology, Risk, and Gender

    DEFF Research Database (Denmark)

    Arndt, Channing; Tarp, Finn

    2000-01-01

    Interactions between agricultural technology improvements, risk-reducing behavior, and gender roles in agricultural production in Mozambique are examined. The analysis employs a computable general equilibrium (CGE) model that explicitly incorporates key features of the economy. These include......: detailed accounting of marketing margins, home consumption, risk, and gender roles in agricultural production. Our results show that agricultural technology improvements benefit both male and female occupants of rural households. Due to economic interactions, agricultural technology improvements...

  6. Agricultural Technology, Risk, and Gender

    DEFF Research Database (Denmark)

    Arndt, Channing; Tarp, Finn

    2000-01-01

    Interactions between agricultural technology improvements, risk-reducing behavior, and gender roles in agricultural production in Mozambique are examined. The analysis employs a computable general equilibrium (CGE) model that explicitly incorporates key features of the economy. These include...

  7. Agricultural Technology Opportunities.

    Science.gov (United States)

    North Carolina State Board of Education, Raleigh. Agricultural Technology Education Section.

    Agricultural education programs available through North Carolina's newly created system of industrial education center, technical institutes, and community colleges are described. The information is for use by administrators, and teachers of adult agricultural courses and counselors of high school dropouts and graduates. It describes the need for…

  8. Aerial imaging with manned aircraft for precision agriculture

    Science.gov (United States)

    Over the last two decades, numerous commercial and custom-built airborne imaging systems have been developed and deployed for diverse remote sensing applications, including precision agriculture. More recently, unmanned aircraft systems (UAS) have emerged as a versatile and cost-effective platform f...

  9. Aircraft propulsion systems technology and design

    National Research Council Canada - National Science Library

    Oates, Gordon C

    1989-01-01

    ... propulsion technology planned by Gordon C. Gates. Other titles: Aerothermodynamics of gas turbine and rocket propulsion (c!988); Aerothermodynamics of aircraft engine com.ponents (c!985). Includes b...

  10. Agriculture: access to technology limited.

    Science.gov (United States)

    1997-01-01

    From country to country and even regionally, the roles of women in agriculture vary, but most of their labor is in unpaid subsistence production and their contributions tend to be underestimated, according to the results of the [UN] Secretary-General's report. Depending on circumstances, they have complementary roles with men, sharing or dividing tasks in the production of crops, care of animals, and forestry management. In sub-Saharan Africa, for example, women contribute 60-80% of labor in food production for both household consumption and sale, while in Malaysia the women account for only 35% of the agricultural labor force, and in Ireland the participation rate is only 10.4%. Although women make this important amount of labor contributions to agricultural production, "development policies tend to favor export crops to earn foreign exchange and the agricultural research tends to address the improvement of production and technologies for commercial production". This results in limited access for women to technical knowledge and innovations, including irrigation, machinery, farming techniques and extension services. This is strengthened by the fact that most of the extension services target farmers who own land and can obtain credit to invest in input and technology. full text

  11. Improving transient analysis technology for aircraft structures

    Science.gov (United States)

    Melosh, R. J.; Chargin, Mladen

    1989-01-01

    Aircraft dynamic analyses are demanding of computer simulation capabilities. The modeling complexities of semi-monocoque construction, irregular geometry, high-performance materials, and high-accuracy analysis are present. At issue are the safety of the passengers and the integrity of the structure for a wide variety of flight-operating and emergency conditions. The technology which supports engineering of aircraft structures using computer simulation is examined. Available computer support is briefly described and improvement of accuracy and efficiency are recommended. Improved accuracy of simulation will lead to a more economical structure. Improved efficiency will result in lowering development time and expense.

  12. Technology Usage of Tennessee Agriculture Teachers

    Science.gov (United States)

    Coley, Michael D.; Warner, Wendy J.; Stair, Kristin S.; Flowers, James L.; Croom, D. Barry

    2015-01-01

    This study examined the accessibility and use of instructional technologies by agriculture teachers in Tennessee. Data were collected using a survey instrument to investigate teachers' adoption of technology, sources of acquired technology skills, accessibility and use of technological equipment, and barriers to technology integration. The study…

  13. Technologies for climate change adaptation. Agriculture sector

    Energy Technology Data Exchange (ETDEWEB)

    Zhu, X. (ed.) (UNEP Risoe Centre, Roskilde (Denmark)); Clements, R.; Quezada, A.; Torres, J. (Practical Action Latin America, Lima (Peru)); Haggar, J. (Univ. of Greenwich, London (United Kingdom))

    2011-08-15

    This guidebook presents a selection of technologies for climate change adaptation in the agriculture sector. A set of 22 adaptation technologies are showcased. These are based primarily on the principles of agroecology, but also include scientific technologies of climate and biological sciences complemented by important sociological and institutional capacity building processes that are required for climate change to function. The technologies cover: 1) Planning for climate change and variability. 2) Sustainable water use and management. 3) Soil management. 4) Sustainable crop management. 5) Sustainable livestock management. 6) Sustainable farming systems. 7) Capacity building and stakeholder organisation. Technologies that tend to homogenise the natural environment and agricultural production have low possibilities of success in environmental stress conditions that are likely to result from climate change. On the other hand, technologies that allow for, and promote diversity are more likely to provide a strategy which strengthens agricultural production in the face of uncertain future climate change scenarios. The 22 technologies showcased in this guidebook have been selected because they facilitate the conservation and restoration of diversity while also providing opportunities for increasing agricultural productivity. Many of these technologies are not new to agricultural production practices, but they are implemented based on the assessment of current and possible future impacts of climate change in a particular location. agroecology is an approach that encompasses concepts of sustainable production and biodiversity promotion and therefore provides a useful framework for identifying and selecting appropriate adaptation technologies for the agriculture sector. The guidebook provides a systematic analysis of the most relevant information available on climate change adaptation technologies in the agriculture sector. It has been compiled based on a literature

  14. Problems of Agricultural Technological Innovation in China and Countermeasures

    Institute of Scientific and Technical Information of China (English)

    Hongbo; LIU; Ren; LIU; Huazhen; LIU

    2013-01-01

    Major problems of agricultural technological innovation in China were summarized as below: first,poor agricultural science and technology system; second,deficient technological promotion system; third,shortage of agricultural professionals; fourth,serious shortage of science and technology input. In view of these problems,the following suggestions were given to improve the innovation of agricultural technology in China. ( 1) Restructuring agricultural research institutes,establishing cooperative innovation centers,improving agricultural technological innovation system; ( 2) Specifying the direction of research projects,improving scientific research level of technicians,so as to improve the agricultural technological innovation capacity; ( 3) Improving promotion and service stations in towns,organizing technological service teams of agricultural universities and colleges,establishing agricultural technological promotion systems; ( 4) Increasing input in agricultural technological innovation by attracting government input,enterprise investment and other financial support; ( 5) Cultivating more talents of agricultural technology,training leading agricultural technicians,grassroots agricultural service staff and practical talents.

  15. Impact of Advanced Propeller Technology on Aircraft/Mission Characteristics of Several General Aviation Aircraft

    Science.gov (United States)

    Keiter, I. D.

    1982-01-01

    Studies of several General Aviation aircraft indicated that the application of advanced technologies to General Aviation propellers can reduce fuel consumption in future aircraft by a significant amount. Propeller blade weight reductions achieved through the use of composites, propeller efficiency and noise improvements achieved through the use of advanced concepts and improved propeller analytical design methods result in aircraft with lower operating cost, acquisition cost and gross weight.

  16. Industrialized Development Models of Agricultural Scientific and Technological Achievements

    Institute of Scientific and Technical Information of China (English)

    Wanjiang; WANG

    2015-01-01

    Industrialization of agricultural scientific and technological achievements has become an extremely important part in agricultural structural adjustment and agricultural economic development. Basic models for industrialization of China’s agricultural scientific and technological achievements should be:( i) integrating scientific and technological development and production relying on large enterprises;( ii) integrating scientific research and development with agricultural scientific and technological achievements and scientific research institutions as support;( iii) spindle type transformation;( vi) agricultural scientific and technological demonstration area;( v) technology extension network.

  17. Agricultural-industrial technological paths

    Energy Technology Data Exchange (ETDEWEB)

    Magalhaes, Paulo Sergio Graziano; Nogueira, Luiz Augusto Horta; Cantarella, Heitor; Rossetto, Raffaella; Franco, Henrique C. Junqueira; Braunbeck, Oscar

    2012-07-01

    The chapter approaches the identification of relevant parameters, sugarcane planting, soil preparation and compaction, mechanical harvesting, straw recovery, use of residues, soil carbon sequestration, greenhouse gases emission,l other effects, production of coal as an alternative for C storage, use of biofuels (bioethanol and biodiesel) in agriculture and transport of sugarcane, estimation of diesel consumption in the sugarcane industry, scenarios considered for the use of biofuels, modelling the impacts of the adoption of biofuels - fuel consumption and emissions, energy and impact of biofuels use in bioethanol production, impact of adoption of biofuels on emissions in bioethanol production, and increase in the scale (milling capacity) of the sugar and bioethanol mills.

  18. New technologies in agricultural biotechnology

    Directory of Open Access Journals (Sweden)

    Andras Szekacs

    2016-12-01

    Full Text Available Technologies that emerged during the last decade as new tools occasionally represent fundamentally new means of genome modification, which, in addition to the scientific novelty, faces legislators with new challenge by giving a new meaning to both the biochemical/molecular biological and legal meaning to genetically modified organisms (GMOs. Emerging plant genetic technologies are categorized as zinc finger nuclease (ZFN technology; oligonucleotide directed mutagenesis; cisgenesis and intragenesis; RNA-dependent DNA methylation by RNA interference; grafting on GM rootstock; reverse breeding; agro-infiltration; and synthetic genomics. Although all these methods apply biotechnology processes to create new plant varieties, it debated whether all result in GMOs according to the current legal definition. Official risk assessment of these technologies is a task of outstanding weight of the authority.

  19. JPL Robotics Technology Applicable to Agriculture

    Science.gov (United States)

    Udomkesmalee, Suraphol Gabriel; Kyte, L.

    2008-01-01

    This slide presentation describes several technologies that are developed for robotics that are applicable for agriculture. The technologies discussed are detection of humans to allow safe operations of autonomous vehicles, and vision guided robotic techniques for shoot selection, separation and transfer to growth media,

  20. High Technology in the Vocational Agriculture Classroom.

    Science.gov (United States)

    Camp, William G.

    While many aspects of high technology may be directly applicable in the vocational agricultural classroom, the primary thrust of high technology into such programs, at least in the short range, will be centered around the microcomputer. Because of its cost and availability, the microcomputer will continue to play an ever increasing role in…

  1. Marketing margins and agricultural technology in Mozambique

    DEFF Research Database (Denmark)

    Arndt, Channing; Jensen, Henning Tarp; Robinson, Sherman

    2000-01-01

    Improvements in agricultural productivity and reductions in marketing costs in Mozambique are analysed using a computable general equilibrium (CGE) model. The model incorporates detailed marketing margins and separates household demand for marketed and home-produced goods. Individual simulations...... of improved agricultural technology and lower marketing margins yield welfare gains across the economy. In addition, a combined scenario reveals significant synergy effects, as gains exceed the sum of gains from the individual scenarios. Relative welfare improvements are higher for poor rural households...

  2. Prototype-Technology Evaluator and Research Aircraft Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The Area-I team has developed and flight tested the unmanned Prototype-Technology Evaluation and Research Aircraft or PTERA ("ptera" being Greek for wing, or...

  3. BICARBONATE OF SODA BLASTING TECHNOLOGY FOR AIRCRAFT WHEEL PAINTING

    Science.gov (United States)

    This evaluation addressed product quality, waste reduction/pollution prevention and economics in replacing chemical solvent strippers with a bicarbonate of soda blasting technology for removal of paint from aircraft wheels. The evaluation was conducted in the Paint Stripping Sho...

  4. Mathematical Modeling of the Agriculture Crop Technology

    Directory of Open Access Journals (Sweden)

    D. Drucioc

    1999-02-01

    Full Text Available The organized structure of computer system for economic and ecological estimation of agriculture crop technologies is described. The system is composed of six interconnected blocks. The linear, non-linear and stochastic mathematical models for machinery sizing and selection in farm-level cropping system is presented in the mathematical model block of computer system.

  5. Technology transfer and catch-up; Lessons from the commercial aircraft industry

    NARCIS (Netherlands)

    Steenhuis, H.J.; de Bruijn, E.J.; Heerkens, Johannes M.G.

    2007-01-01

    This paper analyses the technology development and technology transfer strategies in the aircraft manufacturing industry for four industrially developing countries. It is concluded from four case studies that technology catch-up is extremely difficult due to aircraft technology characteristics.

  6. Work and technological innovation in organic agriculture.

    Science.gov (United States)

    Tereso, M J A; Abrahão, R F; Gemma, S F B; Montedo, U B; Menegon, N L; Guarneti, J E; Ribeiro, I A V

    2012-01-01

    Organic agriculture is a sustainable cultivation ecologically, economically and socially. Several researches in organic agriculture have been made from technical perspectives, economic traits or related to ecological aspects. There are practically no investigations into the nature of the technology used in organic agriculture, especially from an ergonomic perspective. From the activity analysis, this study aimed to map the technology used in the production of organic vegetables. Properties producing organic vegetables were selected representing the State of São Paulo. It was applied an instrument (questionnaire and semi-structured interview) with their managers and it was made visual records to identify adaptations, innovations and technological demands that simultaneously minimize the workload and the difficulties in performing the tasks and increase work productivity. For some of the technological innovations a digital scanner was used to generate a virtual solid model to facilitate its redesign and virtual prototyping. The main results show that organic farmers have little technology in product form. The main innovations that enable competitive advantage or allow higher labor productivity occur in the form of processes, organization and marketing.

  7. Diagnosing Management of Agricultural Research and Technology Development under the Agricultural Innovation Framework

    Directory of Open Access Journals (Sweden)

    2014-06-01

    Full Text Available This study aimed at identifying and analyzing issues and challenges on the agricultural research and technology development under the national innovation framework. The survey consisted of two groups: agricultural researchers of Agriculture-Research and Education Organization and all faculty members of public agricultural faculties of Ministry of Scientific, Research and Technology. Using Cochran sampling formula and multi-stage sampling method, 188 researchers and 205 faculty members were selected in order to fill in the survey questionnaire. Using the SPSS, collected data analyzed based on explanatory factor analysis. Totally, factor analysis of three sets of issues and challenges on the agricultural research and technology development under the national innovation framework led to extract 13 factors, including agricultural structure and policy, infrastructure and resources of agricultural development, supportive services for agricultural development (level of agricultural development, investment and capacity building in research and technology, management of research and technology development, research and technology productivity, research culture, networks for research and technology development (level of national innovation system, agricultural research policy, impacts and effectiveness of agricultural research and technology development, integrated management of research and technology, institutional development for agricultural research and technology and systematic synergy of agricultural research and higher education (level of agricultural innovation system. Totally, these three sets of factors explained 64%, 75% and 73% of the total variances. Finally, using conceptual clustering for the extracted factors, a conceptual model of issues and challenges of agricultural research and technology development under the national innovation framework was presented.

  8. The impact of technology on fighter aircraft requirements

    Science.gov (United States)

    Dollyhigh, S. M.; Foss, W. E., Jr.

    1985-01-01

    Technology integration studies were made to examine the impact of emerging technologies on fighter aircraft. The technologies examined included advances in aerodynamics, controls, structures, propulsion, and systems and were those which appeared capable of being ready for application by the turn of the century. A primary impetus behind large increases in figher capability will be the rapid increase in fighter engine thrust-to-weight ratio. High thrust-weight engines, integrated with other advanced and emerging technologies, can result in small extremely maneuverable fighter aircraft that have thrust-weight ratios of 1.4+ and weight one-half as much as today's fighters. Future fighter aircraft requirements are likely to include a turn capability in excess of 7g's throughout much of the maneuver envelope, post-stall maneuverability, STOVL or VTOL, and a single engine for low cost.

  9. Study on Modern Agriculture Equipment and Technology Coordinating Innovation

    Institute of Scientific and Technical Information of China (English)

    Weilong; WANG; Zulin; DA

    2013-01-01

    As the material foundation of agriculture modernization, the modernization level of agricultural equipment and technology is the significant signal of agricultural modernization, and the advancement of agricultural modernization is the important content of building a well-off society in an all-around way. Upgrading key technology research ability and promoting agricultural mechanization and industry development not only can shorten the gap between agricultural development level in China and that in developed countries, but also can advance the modernization process of China.

  10. Aircraft Engine Technology for Green Aviation to Reduce Fuel Burn

    Science.gov (United States)

    Hughes, Christopher E.; VanZante, Dale E.; Heidmann, James D.

    2013-01-01

    The NASA Fundamental Aeronautics Program Subsonic Fixed Wing Project and Integrated Systems Research Program Environmentally Responsible Aviation Project in the Aeronautics Research Mission Directorate are conducting research on advanced aircraft technology to address the environmental goals of reducing fuel burn, noise and NOx emissions for aircraft in 2020 and beyond. Both Projects, in collaborative partnerships with U.S. Industry, Academia, and other Government Agencies, have made significant progress toward reaching the N+2 (2020) and N+3 (beyond 2025) installed fuel burn goals by fundamental aircraft engine technology development, subscale component experimental investigations, full scale integrated systems validation testing, and development validation of state of the art computation design and analysis codes. Specific areas of propulsion technology research are discussed and progress to date.

  11. A NASA study of the impact of technology on future multimission aircraft

    Science.gov (United States)

    Samuels, Jeffrey J.

    1992-01-01

    A conceptual aircraft design study was recently completed which compared three supersonic multimission tactical aircraft. The aircraft were evaluated in two technology timeframes and were sized with consistent methods and technology assumptions so that the aircraft could be compared in operational utility or cost analysis trends. The three aircraft are a carrier-based Fighter/Attack aircraft, a land-based Multirole Fighter, and a Short Takeoff/Vertical Landing (STOVL) aircraft. This paper describes the design study ground rules used and the aircraft designed. The aircraft descriptions include weights, dimensions and layout, design mission and maneuver performance, and fallout mission performance. The effect of changing technology and mission requirements on the STOVL aircraft and the impact of aircraft navalization are discussed. Also discussed are the effects on the STOVL aircraft of both Thrust/Weight required in hover and design mission radius.

  12. Agricultural R&D, technology and productivity.

    Science.gov (United States)

    Piesse, J; Thirtle, C

    2010-09-27

    The relationships between basic and applied agricultural R&D, developed and developing country R&D and between R&D, extension, technology and productivity growth are outlined. The declining growth rates of public R&D expenditures are related to output growth and crop yields, where growth rates have also fallen, especially in the developed countries. However, growth in output value per hectare has not declined in the developing countries and labour productivity growth has increased except in the EU. Total factor productivity has generally increased, however it is measured. The public sector share of R&D expenditures has fallen and there has been rapid concentration in the private sector, where six multinationals now dominate. These companies are accumulating intellectual property to an extent that the public and international institutions are disadvantaged. This represents a threat to the global commons in agricultural technology on which the green revolution has depended. Estimates of the increased R&D expenditures needed to feed 9 billion people by 2050 and how these should be targeted, especially by the Consultative Group on International Agricultural Research (CGIAR), show that the amounts are feasible and that targeting sub-Saharan Africa (SSA) and South Asia can best increase output growth and reduce poverty. Lack of income growth in SSA is seen as the most insoluble problem.

  13. An Overview of Aircraft Integrated Control Technology

    Science.gov (United States)

    1994-09-01

    and stability augmentation, high hf’ system, steering and brak - ing 22 ’ . An F-15B research aircraft, modified with all-moving canard control...0.2 0.4 0.6 0.8 1.0 1.2 1.4 MACH NUMBER The IFPC system responds to pilot inputs with an automatic blend of aerodynamic control surfaces and thrust...decoupling airframe translation and rotation movements). In general, it was found that a blended combination of direct force and conventional control

  14. Sensor Technology and Futuristic Of Fighter Aircraft

    Directory of Open Access Journals (Sweden)

    Emmanuel Rugambage Ndayishimiye

    2016-08-01

    Full Text Available The Next Generation fighter Aircraft seeks a fighter with higher abilities in areas such as reach, persistence, survivability, net-centricity, situation awareness, human system integration and weapons effects. The future system will have to counter foe armed with next generation advanced electronic attack, sophisticated integrated air defense systems, directed energy weapons, passive detection, integrated self-protection and cyber-attack capabilities. It must be capable to operate in the anti-access area-denial (A2/AD environment that will exist in the next coming years.

  15. NASA Fixed Wing Project: Green Technologies for Future Aircraft Generation

    Science.gov (United States)

    Del Rosario, Ruben; Koudelka, John M.; Wahls, Rich; Madavan, Nateri

    2014-01-01

    Commercial aviation relies almost entirely on subsonic fixed wing aircraft to constantly move people and goods from one place to another across the globe. While air travel is an effective means of transportation providing an unmatched combination of speed and range, future subsonic aircraft must improve substantially to meet efficiency and environmental targets.The NASA Fundamental Aeronautics Fixed Wing (FW) Project addresses the comprehensive challenge of enabling revolutionary energy efficiency improvements in subsonic transport aircraft combined with dramatic reductions in harmful emissions and perceived noise to facilitate sustained growth of the air transportation system. Advanced technologies and the development of unconventional aircraft systems offer the potential to achieve these improvements. Multidisciplinary advances are required in aerodynamic efficiency to reduce drag, structural efficiency to reduce aircraft empty weight, and propulsive and thermal efficiency to reduce thrust-specific energy consumption (TSEC) for overall system benefit. Additionally, advances are required to reduce perceived noise without adversely affecting drag, weight, or TSEC, and to reduce harmful emissions without adversely affecting energy efficiency or noise.The paper will highlight the Fixed Wing project vision of revolutionary systems and technologies needed to achieve these challenging goals. Specifically, the primary focus of the FW Project is on the N+3 generation; that is, vehicles that are three generations beyond the current state of the art, requiring mature technology solutions in the 2025-30 timeframe

  16. Resource Allocation of Agricultural Science and Technology R&D

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    The status quo of resource allocation of agricultural science and technology R&D(research and development)both at home and abroad,including the amount and function of agricultural science and technology research funds,human resources in the resources of agricultural science and technology R&D,the efficiency of resource allocation of agricultural science and technology R&D,the management system of agricultural scientific innovation and the operation status of scientific funds,is analyzed.The problems in the current resource allocation of agricultural science and technology R&D are put forward,including unreasonable resource allocation;low efficiency,and low efficiency of the transformation of agricultural scientific achievements.The highly effective resource allocation of agricultural science and technology R&D is analyzed from the aspects of resource allocation structure,environment,channel,spatial layout and industrial chain.

  17. Airframe technology for aircraft energy efficiency. [economic factors

    Science.gov (United States)

    James, R. L., Jr.; Maddalon, D. V.

    1984-01-01

    The economic factors that resulted in the implementation of the aircraft energy efficiency program (ACEE) are reviewed and airframe technology elements including content, progress, applications, and future direction are discussed. The program includes the development of laminar flow systems, advanced aerodynamics, active controls, and composite structures.

  18. The Building of Grass-roots Agricultural Technology Extension System

    Institute of Scientific and Technical Information of China (English)

    Wen; YANG; Jian; HUANG

    2013-01-01

    Based on the survey of 154 farmers in Guiyang City, we analyze the basic situation of building of grass-roots agricultural technology extension system in Guiyang City. Then we point out some problems in the building of grass-roots agricultural technology extension system in Guiyang City: the function of grass-roots agricultural technology extension center weakens; the content of agricultural technology extension is difficult to adapt to farmers’ needs for technology; the extension mode of agricultural technology departments does not adapt to the needs of modern agriculture. In order to perfect the building of grass-roots agricultural technology extension system, the countermeasures and recommendations are put forth as follows: strengthening the input of funds, and ensuring that the basic work of public welfare agricultural technology extension is smoothly carried out; innovating upon the system, and improving the function of grass-roots agricultural technology extension center; implementing management on agricultural technology extension personnel’s performance, and promoting the extension efficiency; strengthening the building of extension team in rural areas, and cultivating high-quality agricultural technology extension personnel; exploring the advanced service mode to meet farmers’ needs.

  19. Measuring Research on County Agricultural Technological Innovation Ability Index

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Taking the mechanism of technological construction guidance theory and mode which consists of "objective-construction-evaluation-construction-objective" as a starting point, on the basis of county agricultural technological innovation ability and its index definition, this paper researches the constructing system of county agricultural technological innovation ability. Firstly, on the basis of defining county agricultural technological innovation ability and the definition of index, according to the principle of purposefulness, scientificity, systematicness, integration of dynamic state and static state, integration of quantitativeness and qualitativeness and so on, we construct the multi-level measuring system of county agricultural technological innovation ability, including 4 first-level indices, namely technological innovation environment, technological innovation basis, technological innovation ability, and technological innovation efficiency; 15 second-level indices, such as technological policy, technological system mechanism, technological institution construction, ability of innovation subject, ability of industrial expansion, scale merit, technological contribution rate. Moreover, this system has 45 third-level indices. Then, by using unascertained mathematics method and AHM method, we establish the multi-level unascertained composite measuring model of county agricultural technological innovation ability index. Finally, by using the survey data of one county in Hebei Province, and the established county agricultural technological innovation ability index model, we get the county agricultural technological innovation ability index of 0.711 by calculation, that is, the innovation ability is at the intermediate level, namely the modern agricultural sub-stage. The empirical research proves the correctness and applicability of this model.

  20. Aircraft technology portfolio optimization using ant colony optimization

    Science.gov (United States)

    Villeneuve, Frederic J.; Mavris, Dimitri N.

    2012-11-01

    Technology portfolio selection is a combinatorial optimization problem often faced with a large number of combinations and technology incompatibilities. The main research question addressed in this article is to determine if Ant Colony Optimization (ACO) is better suited than Genetic Algorithms (GAs) and Simulated Annealing (SA) for technology portfolio optimization when incompatibility constraints between technologies are present. Convergence rate, capability to find optima, and efficiency in handling of incompatibilities are the three criteria of comparison. The application problem consists of finding the best technology portfolio from 29 aircraft technologies. The results show that ACO and GAs converge faster and find optima more easily than SA, and that ACO can optimize portfolios with technology incompatibilities without using penalty functions. This latter finding paves the way for more use of ACO when the number of constraints increases, such as in the technology and concept selection for complex engineering systems.

  1. NASA Fixed Wing Project: Green Technologies for Future Aircraft Generation

    Science.gov (United States)

    DelRosario, Ruben

    2014-01-01

    The NASA Fundamental Aeronautics Fixed Wing (FW) Project addresses the comprehensive challenge of enabling revolutionary energy efficiency improvements in subsonic transport aircraft combined with dramatic reductions in harmful emissions and perceived noise to facilitate sustained growth of the air transportation system. Advances in multidisciplinary technologies and the development of unconventional aircraft systems offer the potential to achieve these improvements. The presentation will highlight the FW Project vision of revolutionary systems and technologies needed to achieve the challenging goals of aviation. Specifically, the primary focus of the FW Project is on the N+3 generation that is, vehicles that are three generations beyond the current state of the art, requiring mature technology solutions in the 2025-30 timeframe.

  2. Analysis on Technology Roadmap of Agricultural Equipment Industry in Chongqing

    Institute of Scientific and Technical Information of China (English)

    Chongjing; TAN; Jin; YE; Shi; YANG

    2014-01-01

    Since the subsidizing agricultural machine purchase was launched in 2004,the agriculture equipment industry in Chongqing has progressed by leaps and bounds,but it is still faced with a few urgent problems,which requires the coordination of stakeholders,with an aim to establish a clear direction of the development of industry and a technology route. With planting industry as an example,this paper applies the principle and method of industry technology roadmap to analyse the market demand,industry target,technology barrier and R & D demand of agricultural equipment industry in Chongqing. Based on the results,the top technology R & D items of agricultural equipment industry in Chongqing are obtained. Finally,the following suggestions are put forward: integrating resources,constructing platform and improving innovation ability; constructing agricultural industry park and promoting clustered development of agricultural equipment industry; strengthening finance and taxation support; strengthening construction of agricultural mechanization infrastructure; substantially developing socialized service of agricultural machinery.

  3. Advances in Vessel and Aircraft Technologies

    Science.gov (United States)

    2010-05-25

    for robots, the Ministry of Economy , Trade and Industry (METI) of the Japanese government has urged the robotics community to strive towards the...Univ., Tokyo Institute of Technology, Tsukuba Univ., Tohoku Univ., Kobe Univ., 11 Osaka Univ., Kyoto Univ., Ritsumeikan Univ., Hiroshima Univ

  4. Accessibility and Usage of Technology by North Carolina Agriculture Teachers

    Science.gov (United States)

    Williams, Maegen R.; Warner, Wendy J.; Flowers, James L.; Croom, D. Barry

    2014-01-01

    This study examined the integration of technology into the instructional process in North Carolina agricultural education classrooms. The study used survey research methodology to collect information on the availability of instructional technology and the frequency of instructional technology use by North Carolina agriculture teachers. The study…

  5. International Conference on Information Technology and Agricultural Engineering (ICITAE 2011)

    CERN Document Server

    Sambath, Sabo; Information Technology and Agricultural Engineering

    2012-01-01

    This volume comprises the papers from 2011 International Conference on Information Technology and Agricultural Engineering (ICITAE 2011).  2011 International Conference on Information Technology and Agricultural Engineering (ICITAE 2011) has been held in Sanya, China, December 1-2, 2011. All the papers have been peer reviewed by the selected experts. These papers represent the latest development in the field of materials manufacturing technology, spanning from the fundamentals to new technologies and applications. Specially, these papers cover the topics of Information Technology and Agricultural Engineering. This book provides a greatly valuable reference for researchers in the field of Information Technology and Agricultural Engineering who wish to further understand the underlying mechanisms and create innovative and practical techniques, systems and processes. It should also be particularly useful for engineers in information technology and agriculture who are responsible for the efficient and effective ...

  6. Mixed Reality-based Interactive Technology for Aircraft Cabin Assembly

    Institute of Scientific and Technical Information of China (English)

    LI Shiqi; PENG Tao; WANG Junfeng; XU Chi

    2009-01-01

    Due to the narrowness of space and the complexity of structure, the assembly of aircraft cabin has become one of the major bottlenecks in the whole manufacturing process. To solve the problem, at the beginning of aircraft design, the different stages of the lifecycle of aircraft must be thought about, which include the trial manufacture, assembly, maintenance, recycling and destruction of the product. Recently, thanks to the development of the virtual reality and augmented reality, some low-cost and fast solutions are found for the product assembly. This paper presents a mixed reality-based interactive technology for the aircraft cabin assembly, which can enhance the efficiency of the assemblage in a virtual environment in terms of vision, information and operation. In the mixed reality-based assembly environment, the physical scene can be obtained by a camera and then generated by a computer. The virtual parts, the features of visual assembly, the navigation information, the physical parts and the physical assembly environment will be mixed and presented in the same assembly scene. The mixed or the augmented information will provide some assembling information as a detailed assembly instruction in the mixed reality-based assembly environment. Constraint proxy and its match rules help to reconstruct and visualize the restriction relationship among different parts, and to avoid the complex calculation of constraint's match. Finally, a desktop prototype system of virtual assembly has been built to assist the assembly verification and training with the virtual hand.

  7. Small transport aircraft technology propeller study

    Science.gov (United States)

    Black, B. M.; Magliozzi, B.; Rohrbach, C.

    1983-01-01

    A study to define potential benefits of advanced technology propeller for 1985-1990 STAT commuter airplanes was completed. Two baselines, a Convair, 30 passenger, 0.47 Mach number airplane and a Lockheed, 50 passenger, 0.70 Mach number airplane, were selected from NASA-Ames sponsored airframe contracts. Parametric performance, noise level, weight and cost trends for propellers with varying number of blades, activity factor, camber and diameter incorporating blade sweep, tip proplets, advanced composite materials, advanced airfoils, advanced prevision synchrophasing and counter-rotation are presented. The resulting DOC, fuel burned, empty weight and acquisition cost benefits are presented for resizings of the two baseline airplanes. Six-bladed propeller having advanced composite blades, advanced airfoils, tip proplets and advanced prevision synchrophasers provided the maximum DOC improvements for both airplanes. DOC and fuel burned were reduced by 8.3% and 17.0% respectively for the Convair airplane and by 24.9% and 41.2% respectively for the Lockheed airplane. The larger reductions arose from a baseline definition with very heavy fuselage acoustic treatment. An alternate baseline, with a cabin noise 13dB in excess of the objective, was also studied.

  8. Combustion technology overview. [the use of broadened property aircraft fuels

    Science.gov (United States)

    Niedzwiecki, R. W.

    1980-01-01

    An overview of combustor technology developments required for use of broadened property fuels in jet aircraft is presented. The intent of current investigations is to determine the extent to which fuel properties can be varied, to obtain a data base of combustion - fuel quality effects, and to determine the trade-offs associated with broadened property fuels. Subcomponents of in-service combustors such as fuel injectors and liners, as well as air distributions and stoichiometry, are being altered to determine the extent to which fuel flexibility can be extended. Finally, very advanced technology consisting of new combustor concepts is being evolved to optimize the fuel flexibility of gas turbine combustors.

  9. A Study of Agricultural Technology Extension and Synchronous Development of Agricultural Modernization,Urbanization and Industrialization in China

    Institute of Scientific and Technical Information of China (English)

    Bibo HU

    2016-01-01

    Through the study of relationship between agricultural technology extension and the development of agricultural modernization,urbanization and industrialization,it is found that agricultural technology extension is an important means to achieve synchronous development of agricultural modernization,urbanization and industrialization. Based on the sample data in China during 1978-2011,we perform the empirical analysis using VAR model and cointegration analysis and impulse response methods. The results show that there is a long-term positive equilibrium relationship between agricultural technology extension and the development of agricultural modernization,urbanization and industrialization,and agricultural technology extension plays a role in promoting agricultural modernization,urbanization and industrialization to varying degrees. Finally,it is concluded that there is a need to establish efficient agricultural technology extension mechanism and diversified agricultural technology extension investment mechanism to make agricultural technology extension better promote China’s agricultural modernization,urbanization and industrialization.

  10. Technology transfer and catch-up; Lessons from the commercial aircraft industry

    NARCIS (Netherlands)

    Steenhuis, Harm-Jan; Bruijn, de Erik J.; Heerkens, Hans

    2007-01-01

    This paper analyses the technology development and technology transfer strategies in the aircraft manufacturing industry for four industrially developing countries. It is concluded from four case studies that technology catch-up is extremely difficult due to aircraft technology characteristics. Base

  11. The Danish technology foresight on environmentally friendly agriculture

    DEFF Research Database (Denmark)

    2013-01-01

    A premise that is necessary for agriculture to develop into an environmentally friendly direction is that research is undertaken into environmentally friendly technologies and methods and how they can be brought into use. There is a need for a prioritised research effort that focuses on those...... without any plan or with some thought. Therefore the National Forest and Nature Agency in Denmark initiated the Green Technological foresight on environmentally friendly agriculture with the aim of examining the agricultural environmental challenges and suggesting technological and structural solutions....... problems which are related to minimising environmental problems affected by the agricultural production’s negative influence on the surroundings, improving animal welfare and finding new ways and products for agriculture. Future directions of agriculture can derive with or without dialogue; it can occur...

  12. Constraints Faced by Stakeholders under Agriculture Technology Management Agency (ATMA

    Directory of Open Access Journals (Sweden)

    J. Yoga Narasimhalu Naidu

    2017-09-01

    Full Text Available Agriculture Technology Management Agency (ATMA is a registered society in India with key stakeholders enmeshed with various agricultural activities for sustainable agricultural development in the state, with focus at district level. It is a hotbed for integrating research, extension and marketing activities and decentralizing day-to-day management of the public Agricultural Technology Development and Dissemination System. The present study was carried out in Andhra Pradesh state to explore the constraints faced by the extension functionaries at each level of decentralized management. Moreover, constraints perceived by the farmers with the support of ATMA in realizing their needs were also studied.

  13. Aircraft gas turbine low-power emissions reduction technology program

    Science.gov (United States)

    Dodds, W. J.; Gleason, C. C.; Bahr, D. W.

    1978-01-01

    Advanced aircraft turbine engine combustor technology was used to reduce low-power emissions of carbon monoxide and unburned hydrocarbons to levels significantly lower than those which were achieved with current technology. Three combustor design concepts, which were designated as the hot-wall liner concept, the recuperative-cooled liner concept, and the catalyst converter concept, were evaluated in a series of CF6-50 engine size 40 degree-sector combustor rig tests. Twenty-one configurations were tested at operating conditions spanning the design condition which was an inlet temperature and pressure of 422 K and 304 kPa, a reference velocity of 23 m/s and a fuel-air-ration of 10.5 g/kg. At the design condition typical of aircraft turbine engine ground idle operation, the best configurations of all three concepts met the stringent emission goals which were 10, 1, and 4 g/kg for CO, HC, and Nox, respectively.

  14. Texas Agricultural Science Teachers' Attitudes toward Information Technology

    Science.gov (United States)

    Anderson, Ryan; Williams, Robert

    2012-01-01

    The researchers sought to find the Agricultural Science teachers' attitude toward five innovations (Computer-Aided Design, Record Books, E-Mail Career Development Event Registration, and World Wide Web) of information technology. The population for this study consisted of all 333 secondary Agricultural science teachers from Texas FFA Areas V and…

  15. Advanced Aerodynamic Technologies for Future Green Regional Aircraft

    Directory of Open Access Journals (Sweden)

    Catalin NAE

    2014-04-01

    Full Text Available Future Green Regional Aircraft (GRA will operate over airports located in the neighborhood of densely populated areas, with high frequency of takeoff/ landing events and, hence, strongly contribute to community noise and gaseous emissions. These issues currently limit further growth of traffic operated by regional airliners which, in the next future, will have to face even more stringent environmental normative worldwide and therefore re-designed to incorporate advanced active aerodynamic technologies. The new concept behind GRA is based on several mainstream technologies: airframe low-noise (LN, aerodynamic load control (LC and load alleviation (LA. These technologies integrate relevant concepts for hybrid and natural laminar flow (HLC/NLF wing, active control of wing movables and aeroelastic tailoring for LC/LA functions, passive means (micro-riblets for turbulent flow drag reduction, innovative gapless architectures (droop nose, morphing flap beside conventional high-lift devices (HLDs, active flow control through synthetic jets, low-noise solutions applied to HLDs (liners, fences, and to fuselage-mounted main and nose landing gears (bay/doors acoustic treatments, fairings, wheels hub cap. The paper deals with the technological readiness level (TRL assessment of the most promising technologies and overall integration in the new generation of GRA, as a highly optimized configuration able to meet requirements for FlighPath 2050.

  16. Green technological foresight on environmental friendly agriculture: Executive summary

    DEFF Research Database (Denmark)

    Borch, K.; Christensen, S.; Jørgensen, U.

    2005-01-01

    manifested. The foresight makes the decision-makers more aware of those challenges and possibilities that exist in the long-term. The foresight is in this case carried out in dialogue with a widely combined panel ofexperts and agricultural players, where one has placed the environmental challenges......Risø and the co-operators have on behalf of the Forest and Nature Agency completed a technological foresight on environmentally friendly agriculture based on green technologies. A technological foresight is a systematic dialogue on how one prepares forfuture challenges, which have not yet......, and The Co-operative Retail and Wholesale Society of Denmark. The purpose has been to thoroughly examinethose environmental challenges which agriculture is up against in the future - and point towards technological and structural solutions as to how agriculture will develop from 2004 to 2024 with dialogue...

  17. Small Engine Technology (SET) Task 24 Business and Regional Aircraft System Studies

    Science.gov (United States)

    Lieber, Lysbeth

    2003-01-01

    This final report has been prepared by Honeywell Engines & Systems, Phoenix, Arizona, a unit of Honeywell International Inc., documenting work performed during the period June 1999 through December 1999 for the National Aeronautics and Space Administration (NASA) Glenn Research Center, Cleveland, Ohio, under the Small Engine Technology (SET) Program, Contract No. NAS3-27483, Task Order 24, Business and Regional Aircraft System Studies. The work performed under SET Task 24 consisted of evaluating the noise reduction benefits compared to the baseline noise levels of representative 1992 technology aircraft, obtained by applying different combinations of noise reduction technologies to five business and regional aircraft configurations. This report focuses on the selection of the aircraft configurations and noise reduction technologies, the prediction of noise levels for those aircraft, and the comparison of the noise levels with those of the baseline aircraft.

  18. Adoption of improved agricultural technologies disseminated via ...

    African Journals Online (AJOL)

    STORAGESEVER

    2008-05-02

    May 2, 2008 ... attitude, knowledge, skills and aspiration of the receivers. In Nigeria, various ... livestock/crop enterprises, agroforestry and engineering. Through this radio .... respondent), X1 = age of the farmer (in years), X2 = level of formal education .... on appropriate agricultural practice and techniques. The result also ...

  19. A NASA study of the impact of technology on future carrier based tactical aircraft - Overview

    Science.gov (United States)

    Wilson, S. B., III

    1992-01-01

    This paper examines the impact of technology on future carrier based tactical aircraft. The results were used in the Center for Naval Analysis Future Carrier Study. The NASA Team designed three classes of aircraft ('Fighter', 'Attack', and 'Multimission') with two different technology levels. The Multimission aircraft were further analyzed by examining the penalty on the aircraft for both catapult launch/arrested landing recovery (Cat/trap) and short take-off/vertical landing (STOVL). The study showed the so-called STOVL penalty was reduced by engine technology and the next generation Strike Fighter will pay more penalty for Cat/trap than for STOVL capability.

  20. Aircraft

    Science.gov (United States)

    Hibbs, Bart D.; Lissaman, Peter B. S.; Morgan, Walter R.; Radkey, Robert L.

    1998-01-01

    This disclosure provides a solar rechargeable aircraft that is inexpensive to produce, is steerable, and can remain airborne almost indefinitely. The preferred aircraft is a span-loaded flying wing, having no fuselage or rudder. Travelling at relatively slow speeds, and having a two-hundred foot wingspan that mounts photovoltaic cells on most all of the wing's top surface, the aircraft uses only differential thrust of its eight propellers to turn. Each of five sections of the wing has one or more engines and photovoltaic arrays, and produces its own lift independent of the other sections, to avoid loading them. Five two-sided photovoltaic arrays, in all, are mounted on the wing, and receive photovoltaic energy both incident on top of the wing, and which is incident also from below, through a bottom, transparent surface. The aircraft is capable of a top speed of about ninety miles per hour, which enables the aircraft to attain and can continuously maintain altitudes of up to sixty-five thousand feet. Regenerative fuel cells in the wing store excess electricity for use at night, such that the aircraft can sustain its elevation indefinitely. A main spar of the wing doubles as a pressure vessel that houses hydrogen and oxygen gasses for use in the regenerative fuel cell. The aircraft has a wide variety of applications, which include weather monitoring and atmospheric testing, communications, surveillance, and other applications as well.

  1. Aircraft

    Science.gov (United States)

    Hibbs, B.D.; Lissaman, P.B.S.; Morgan, W.R.; Radkey, R.L.

    1998-09-22

    This disclosure provides a solar rechargeable aircraft that is inexpensive to produce, is steerable, and can remain airborne almost indefinitely. The preferred aircraft is a span-loaded flying wing, having no fuselage or rudder. Travelling at relatively slow speeds, and having a two-hundred foot wingspan that mounts photovoltaic cells on most all of the wing`s top surface, the aircraft uses only differential thrust of its eight propellers to turn. Each of five sections of the wing has one or more engines and photovoltaic arrays, and produces its own lift independent of the other sections, to avoid loading them. Five two-sided photovoltaic arrays, in all, are mounted on the wing, and receive photovoltaic energy both incident on top of the wing, and which is incident also from below, through a bottom, transparent surface. The aircraft is capable of a top speed of about ninety miles per hour, which enables the aircraft to attain and can continuously maintain altitudes of up to sixty-five thousand feet. Regenerative fuel cells in the wing store excess electricity for use at night, such that the aircraft can sustain its elevation indefinitely. A main spar of the wing doubles as a pressure vessel that houses hydrogen and oxygen gases for use in the regenerative fuel cell. The aircraft has a wide variety of applications, which include weather monitoring and atmospheric testing, communications, surveillance, and other applications as well. 31 figs.

  2. Technologies for Climate Change Mitigation - Agriculture Sector

    DEFF Research Database (Denmark)

    Uprety, D.C.; Dhar, Subash; Hongmin, Dong

    This guidebook describes crop and livestock management technologies and practices that contribute to climate change mitigation while improving crop productivity, reducing reliance on synthetic fertilizers, and lowering water consumption. It is co-authored by internationally recognised experts...... in the areas of crops, livestock, emissions, and economics, and we are grateful for their efforts in producing this cross disciplinary work. This publication is part of a technical guidebook series produced by the UNEP Risø Centre on Energy, Climate and Sustainable Development (URC) as part of the Technology...... to understand their technology needs in a cohesive manner, and prepare Technology Action Plans (TAPs) accordingly. The TNA project is funded by the Global Environment Facility (GEF) and is being implemented by UNEP and the URC in 36 developing countries....

  3. The Relationship between Low-carbon Agriculture and Agricultural Science and Technology Based on Gray Relational Theory

    Institute of Scientific and Technical Information of China (English)

    TAO Ai-xiang

    2012-01-01

    The agricultural energy consumption per unit of GDP is selected as an indicator for measuring the development level of low-carbon agriculture. Using gray relational theory, I analyze the relationship between development level of agricultural science and technology and development level of low-carbon agriculture in China. The results show that the correlation between the two is prominent; the number of agricultural science and technology talents, the number of agricultural science and technology patents, and the number of agricultural science and technology input are three major factors influencing the development of low-carbon agriculture. On this basis, I propose to take further effective measures, and put forth corresponding recommendations, in order to improve the level of agricultural science and technology.

  4. Aircraft noise reduction technology. [to show impact on individuals and communities, component noise sources, and operational procedures to reduce impact

    Science.gov (United States)

    1973-01-01

    Aircraft and airport noise reduction technology programs conducted by NASA are presented. The subjects discussed are: (1) effects of aircraft noise on individuals and communities, (2) status of aircraft source noise technology, (3) operational procedures to reduce the impact of aircraft noise, and (4) NASA relations with military services in aircraft noise problems. References to more detailed technical literature on the subjects discussed are included.

  5. Economics of technological change - A joint model for the aircraft and airline industries

    Science.gov (United States)

    Kneafsey, J. T.; Taneja, N. K.

    1981-01-01

    The principal focus of this econometric model is on the process of technological change in the U.S. aircraft manufacturing and airline industries. The problem of predicting the rate of introduction of current technology aircraft into an airline's fleet during the period of research, development, and construction for new technology aircraft arises in planning aeronautical research investments. The approach in this model is a statistical one. It attempts to identify major factors that influence transport aircraft manufacturers and airlines, and to correlate them with the patterns of delivery of new aircraft to the domestic trunk carriers. The functional form of the model has been derived from several earlier econometric models on the economics of innovation, acquisition, and technological change.

  6. Economics of technological change - A joint model for the aircraft and airline industries

    Science.gov (United States)

    Kneafsey, J. T.; Taneja, N. K.

    1981-01-01

    The principal focus of this econometric model is on the process of technological change in the U.S. aircraft manufacturing and airline industries. The problem of predicting the rate of introduction of current technology aircraft into an airline's fleet during the period of research, development, and construction for new technology aircraft arises in planning aeronautical research investments. The approach in this model is a statistical one. It attempts to identify major factors that influence transport aircraft manufacturers and airlines, and to correlate them with the patterns of delivery of new aircraft to the domestic trunk carriers. The functional form of the model has been derived from several earlier econometric models on the economics of innovation, acquisition, and technological change.

  7. The Strategic Consideration for Expanding the New Technological Revolution of Agriculture in Hunan

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    @@At the birth of the 21st century, the global technological revolution of agriculture has occured. The new breakthroughs of biological technology in agriculture are being obtained on end Information technology, nuclear technology, new-material technology and other new high technologies are being adopted in agriculture on a larger and larger scale. As a big province of agriculture, it is imperative for Hunan to develop the new agricultural high technology,promote the new technological revolution of agriculture and realize the modernization of agriculture by taking the opportunity and facing the challenges in the new century.

  8. A NASA study of the impact of technology on future sea based attack aircraft

    Science.gov (United States)

    Hahn, Andrew S.

    1992-01-01

    A conceptual aircraft design study was recently completed evaluating carrier-based, subsonic attack aircraft using contemporary and future technology assumptions. The study examined a configuration matrix that was made up of light and medium bomb loads, one and two man crews, internal and external weapons carriage, as well as conventional and flying wing planforms. Use of common technology assumptions, engine cycle simulation code, design mission, and consistent application of methods allow for direct comparison of the aircraft. This paper describes the design study ground rules and the aircraft designed. The aircraft descriptions include weights, dimensions, layout, design mission, design constraints, maneuver performance, and fallout mission performance. The strengths, and weaknesses of each aircraft are highlighted.

  9. Smart Sensing Technology for Agriculture and Environmental Monitoring

    CERN Document Server

    2012-01-01

    The book focuses on the different aspects of sensing technology, i.e. high reliability, adaptability, recalibration, information processing, data fusion, validation and integration of novel and high performance sensors specifically aims to monitor agricultural and environmental parameters.   This book is dedicated to Sensing systems for Agricultural and Environmental Monitoring  offers to variety of users, namely, Master and PhD degree students, researchers, practitioners, especially Agriculture and Environmental engineers. The book will provide an opportunity of a dedicated and a deep approach in order to improve their knowledge in this specific field.

  10. Practice and Exploration of Leisure Agriculture Construction in Inner Mongolia Agriculture and Animal Husbandry Science and Technology Park

    Institute of Scientific and Technical Information of China (English)

    Huaidong; WANG; Ming; LI; Lazhu; HAO; Maoyue; GE

    2013-01-01

    This article introduces the basic information about Inner Mongolia Agriculture and Animal Husbandry Science and Technology Park, and the practice concerning leisure agriculture; summarizes the experience obtained. Finally, some ideas are put forth for further construction and development of leisure agriculture in science and technology park as follows: making unified layout and rational planning; integrating the local tourism resources, to establish the system of leisure agriculture; creating features of leisure agriculture in the park; establishing the brand of leisure-oriented training base in science and technology park; carrying out exploration into operation mode of leisure agriculture in the park.

  11. Development Mode and Recommendations for Industrialization of Tropical Agricultural Science and Technology

    Institute of Scientific and Technical Information of China (English)

    Meihuan; QIU; Minxia; LIN; Xiaodong; ZHANG; Hongyi; ZHANG; Zhunian; WANG

    2014-01-01

    Industrialization of tropical agricultural science and technology is an essential part of tropical agricultural technological innovation.This paper firstly analyzed development mode of industrialization of tropical agricultural science and technology in Chin and then came up with recommendations for developing industrialization of tropical agricultural science and technology.

  12. Aviation Maintenance Technology. General. G102 Fundamentals of Aircraft Maintenance. Instructor Material.

    Science.gov (United States)

    Oklahoma State Board of Vocational and Technical Education, Stillwater. Curriculum and Instructional Materials Center.

    These instructor materials for an aviation maintenance technology course contain four instructional modules. The modules cover the following topics: identifying basic components of aircraft, performing aircraft cleaning and corrosion control, interpreting blueprints and drawing sketches, identifying structural materials, and performing basic…

  13. Remote sensing with simulated unmanned aircraft imagery for precision agriculture applications

    Science.gov (United States)

    Hunt, E. Raymond; Daughtry, Craig S.T.; Mirsky, Steven B.; Hively, W. Dean

    2014-01-01

    An important application of unmanned aircraft systems (UAS) may be remote-sensing for precision agriculture, because of its ability to acquire images with very small pixel sizes from low altitude flights. The objective of this study was to compare information obtained from two different pixel sizes, one about a meter (the size of a small vegetation plot) and one about a millimeter. Cereal rye (Secale cereale) was planted at the Beltsville Agricultural Research Center for a winter cover crop with fall and spring fertilizer applications, which produced differences in biomass and leaf chlorophyll content. UAS imagery was simulated by placing a Fuji IS-Pro UVIR digital camera at 3-m height looking nadir. An external UV-IR cut filter was used to acquire true-color images; an external red cut filter was used to obtain color-infrared-like images with bands at near-infrared, green, and blue wavelengths. Plot-scale Green Normalized Difference Vegetation Index was correlated with dry aboveground biomass ( ${mbi {r}} = 0.58$ ), whereas the Triangular Greenness Index (TGI) was not correlated with chlorophyll content. We used the SamplePoint program to select 100 pixels systematically; we visually identified the cover type and acquired the digital numbers. The number of rye pixels in each image was better correlated with biomass ( ${mbi {r}} = 0.73$ ), and the average TGI from only leaf pixels was negatively correlated with chlorophyll content ( ${mbi {r}} = -0.72$ ). Thus, better information for crop requirements may be obtained using very small pixel sizes, but new algorithms based on computer vision are needed for analysis. It may not be necessary to geospatially register large numbers of photographs with very small pixel sizes. Instead, images could be analyzed as single plots along field transects.

  14. TECHNOLOGICAL IMPERATIVE IMPACT OF GLOBALIZATION ON INTERNATIONAL AGRICULTURAL ECONOMY

    Directory of Open Access Journals (Sweden)

    А. Кozlova

    2014-09-01

    Full Text Available The article highlights the factors influencing agricultural production towards global market. The study consists basic fundamental imperatives of globalization on the agricultural sector in international economic relations. The article analyzes the strategic priorities of the international agricultural sector, which includes financial and credit support, legal aspects, processes and integration of organizational structures. Technological imperatives require a large structural and institutional turn in the Ukrainian economy on the basis of current trends in the global economy, scientific and technical potential. There is a growing importance of organizing and conducting international level in the field of technological forecasting. This type of prediction is considered as backbone component in strategic forecasting and economic development programming.

  15. Comparing the development of agricultural technology and information technology in rural Vietnam

    OpenAIRE

    Kaila, Heidi

    2015-01-01

    This paper presents a descriptive analysis on the ownership of different types of technology - both agricultural machinery and information technology - within households in rural areas of Vietnam. We find that there has been little development in the ownership of agricultural machinery, but a rapid expansion of information technology, especially phones. Households without phones or internet access are more likely to be poor, female-headed, have less education, and rely more on transfers. When...

  16. Practice and Exploration of Leisure Agriculture Construction in Inner Mongolia Agriculture and Animal Husbandry Science and Technology Park

    OpenAIRE

    Wang, HuaiDong; Li, Ming; Hao, Lazhu; Ge, Maoyue

    2013-01-01

    This article introduces the basic information about Inner Mongolia Agriculture and Animal Husbandry Science and Technology Park, and the practice concerning leisure agriculture; summarizes the experience obtained. Finally, some ideas are put forth for further construction and development of leisure agriculture in science and technology park as follows: making unified layout and rational planning; integrating the local tourism resources, to establish the system of leisure agriculture; creating...

  17. Advancing Technology: GPS and GIS Outreach Training for Agricultural Producers

    Science.gov (United States)

    Flynn, Allison; Arnold, Shannon

    2010-01-01

    The use of the Global Positioning System (GPS) and Global Information Systems (GIS) has made significant impacts on agricultural production practices. However, constant changes in the technologies require continuing educational updates. The outreach program described here introduces the operation, use, and applications of GPS receivers and GIS…

  18. Lending Officers' Decisions to Recommend Innovative Agricultural Technology.

    Science.gov (United States)

    McIntosh, Wm. Alex; Zey-Ferrell, Mary

    1986-01-01

    Path analysis examines an analytical model of decision making by lending officers of 211 Texas banks when recommending agricultural technology to farmer-clients. Model analyzes effects of loan officers' ascribed/achieved personal characteristics and perceptions of organizational constraints during three stages of decision process: using…

  19. Application of CRISPR technology in genome editing in agriculture -swine

    Science.gov (United States)

    Decades of selective breeding in agricultural species has led to the derivation of stronger and fitter animals with improved production traits. However, often co-segregating with beneficial traits are less desirable traits. With the plethora of genome data and annotation, has come the technology t...

  20. Prototype-Technology Evaluator and Research Aircraft (PTERA) Flight Test Assessment Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The Area-I team has developed and fabricated the unmanned Prototype-Technology Evaluation and Research Aircraft or PTERA ("ptera" being Greek for wing, or...

  1. Experimental research on photocatalytic oxidation air purification technology applied to aircraft cabins

    DEFF Research Database (Denmark)

    Sun, Yuexia; Fang, Lei; Wyon, David Peter

    2008-01-01

    The experiment presented in this report was performed in a simulated aircraft cabin to evaluate the air cleaning effects of two air purification devices that used photocatalytic oxidation (PCO) technology. Objective physical, chemical and physiological measurements and subjective human assessments...

  2. Design, cost, and advanced technology applications for a military trainer aircraft

    Science.gov (United States)

    Hill, G. C.; Harper, M.

    1975-01-01

    The potential impact is examined of advanced aerodynamic and propulsive technologies in terms of operating and acquisition costs on conceptual mission and performance requirements for a future undergraduate jet pilot trainer aircraft.

  3. Analysis of the frontier technology of agricultural IoT and its predication research

    Science.gov (United States)

    Han, Shuqing; Zhang, Jianhua; Zhu, Mengshuai; Wu, Jianzhai; Shen, Chen; Kong, Fantao

    2017-09-01

    Agricultural IoT (Internet of Things) develops rapidly. Nanotechnology, biotechnology and optoelectronic technology are successfully integrated into the agricultural sensor technology. Big data, cloud computing and artificial intelligence technology have also been successfully used in IoT. This paper carries out the research on integration of agricultural sensor technology, nanotechnology, biotechnology and optoelectronic technology and the application of big data, cloud computing and artificial intelligence technology in agricultural IoT. The advantages and development of the integration of nanotechnology, biotechnology and optoelectronic technology with agricultural sensor technology were discussed. The application of big data, cloud computing and artificial intelligence technology in IoT and their development trend were analysed.

  4. Innovative mechanical technologies for agricultural and forest quality productions

    Directory of Open Access Journals (Sweden)

    Raffaele Cavalli

    2008-04-01

    Full Text Available The quality of agricultural and forest products are related to the productive process in which innovative mechanical technologies are used. The innovation should be considered at product, process and enterprise level, the last one being considered as changes into enterprise organization, included services diversification. In the field of machinery used for agricultural products, from soil tillage to harvesting and post-harvesting processes the innovation dealing with products, but also with energy use, environmental protection, work safety has been important due to the mechanical technology output. In the forest sector working systems in which operations are carried out in totally mechanized way, with small turn to semi-mechanized operations, are growing. They are innovations that should change the relationship with young generation which could consider the mechanical technologies attractive for a working activity until now evaluated not much desiderable.

  5. Innovative mechanical technologies for agricultural and forest quality productions

    Directory of Open Access Journals (Sweden)

    Raffaele Cavalli

    2011-02-01

    Full Text Available The quality of agricultural and forest products are related to the productive process in which innovative mechanical technologies are used. The innovation should be considered at product, process and enterprise level, the last one being considered as changes into enterprise organization, included services diversification. In the field of machinery used for agricultural products, from soil tillage to harvesting and post-harvesting processes the innovation dealing with products, but also with energy use, environmental protection, work safety has been important due to the mechanical technology output. In the forest sector working systems in which operations are carried out in totally mechanized way, with small turn to semi-mechanized operations, are growing. They are innovations that should change the relationship with young generation which could consider the mechanical technologies attractive for a working activity until now evaluated not much desiderable.

  6. Group Innovation Ability of Agricultural Technological Innovation Strategic Alliance

    Institute of Scientific and Technical Information of China (English)

    Chishun; MA; Jintian; YU

    2013-01-01

    Agricultural technological innovation strategic alliance, as an important form of strategic alliance, has steadily strengthened the collaborative management among organizations and raised competitive power with the backing of improved group innovation ability. This article studies innovation ability from individual innovation ability to the group innovation ability. Firstly, basic connotation of group innovation ability is to be concluded through the comparison of individual and group innovation ability. Secondly, evaluation index system is to be established based on the influencing factors of the group innovation ability of agricultural technological innovation strategic alliance and evaluation is based on three dimensions, namely organization technological innovation ability, alliance collaborative innovation ability as well as innovation environment. Furthermore, basic methods for promoting the group innovation ability of alliance are to be proposed.

  7. Risks in the Transformation of Scientific and Technological Achievements concerning Tropical Agriculture

    Institute of Scientific and Technical Information of China (English)

    Shachen OUYANG; Zhiqiang LUO; Dong LIU; Shuhe PU

    2016-01-01

    The transformation of scientific and technological achievements concerning tropical agriculture has the characteristics of high risk and high return. Based on the characteristics of transformation of scientific and technological achievements concerning tropical agriculture,this paper analyzes the risk factors during the transformation of scientific and technological achievements concerning tropical agriculture. In accordance with the current situation of low transformation rate of scientific and technological achievements concerning tropical agriculture in China,this paper proposes the measures to avoid the risks in the transformation of scientific and technological achievements concerning tropical agriculture and enhance the transformation rate of scientific and technological achievements concerning tropical agriculture.

  8. Development Path for Agricultural Modernization of Shaanxi Province from the Perspective of Technological Progress

    Institute of Scientific and Technical Information of China (English)

    Lufeng; DUAN

    2013-01-01

    The lag in technological innovation is a bottleneck for modern agricultural development,so technological progress is an inevitable path to break this bottleneck. On the basis of introducing theory of technological progress,this study presents 4 paths for promoting agricultural modernization development in line with current situations of agricultural development and technological progress in Shaanxi Province.

  9. On Agricultural Scientific Research Institutions Supporting and Serving Technological Innovation Entities

    Institute of Scientific and Technical Information of China (English)

    Xiaoqiang; CHU; Bingqiang; XU; Hanchun; QIN; Guoyan; SHAN; Peiqun; LIN; Guixiu; HUANG

    2015-01-01

    This paper firstly analyzed current situation of agricultural technological innovation system in China and obstacles restricting agricultural enterprises to become technological innovation entities. It discussed exploration and practice of Chinese Academy of Tropical Agricultural Sciences in supporting and serving technological innovation entities. Finally,it came up with ideas and approaches for supporting and serving technological innovation entities in the new trend,to provide a new idea and practice for agricultural scientific research institute supporting and serving technological innovation entities.

  10. Technological Innovations in Agricultural Tractors: Adopters’ behaviour towards new technological trajectories and future directions

    OpenAIRE

    Ester Ferrari; Luigi Bollani; Mario Coccia; Eugenio Cavallo

    2013-01-01

    Latest advancements in tractors engineering have allowed farmers to increase productivity, and simultaneously to reduce operator’s hazards. However, little attention has been given to farmers’ behaviour and attitude toward the adoption of technological innovations concerning agricultural tractors. The study explores farmers’ behaviours on agricultural tractors current and future technological trajectories. A main case study concerning Italy is analyzed. Results show three different behaviours...

  11. Traceability System For Agricultural Productsbased on Rfid and Mobile Technology

    Science.gov (United States)

    Sugahara, Koji

    In agriculture, it is required to establish and integrate food traceability systems and risk management systems in order to improve food safety in the entire food chain. The integrated traceability system for agricultural products was developed, based on innovative technology of RFID and mobile computing. In order to identify individual products on the distribution process efficiently,small RFID tags with unique ID and handy RFID readers were applied. On the distribution process, the RFID tags are checked by using the readers, and transit records of the products are stored to the database via wireless LAN.Regarding agricultural production, the recent issues of pesticides misuse affect consumer confidence in food safety. The Navigation System for Appropriate Pesticide Use (Nouyaku-navi) was developed, which is available in the fields by Internet cell-phones. Based on it, agricultural risk management systems have been developed. These systems collaborate with traceability systems and they can be applied for process control and risk management in agriculture.

  12. Group Innovation Ability of Agricultural Technological Innovation Strategic Alliance

    OpenAIRE

    Ma, Chishun; Yu, Jintian

    2013-01-01

    Agricultural technological innovation strategic alliance, as an important form of strategic alliance, has steadily strengthened the collaborative management among organizations and raised competitive power with the backing of improved group innovation ability. This article studies innovation ability from individual innovation ability to the group innovation ability. Firstly, basic connotation of group innovation ability is to be concluded through the comparison of individual and group innovat...

  13. THE ROLE OF RELIGION AND AGRICULTURAL TECHNOLOGY IN SOCIAL TRANSFORMATION

    Directory of Open Access Journals (Sweden)

    M. Endy Saputro

    2013-04-01

    Full Text Available Tujuan penelitan ini adalah untuk mengungkapkan bagaimana agama dan teknologi pertanian dapat memberdayakan masyarakat dan mendorong sebuah transformasi sosial. Survei dan wawancara diterapkan guna mendapatkan data yang dibutuhkan dalam penelitian. Objek penelitian ini adalah komunitas petani di Banjarnegara yang tergabung dalam organisasi petani yang difasilitasi oleh organisasi massa islam Muhammadiyah. Hasil penelitian menunjukkan bahwa agama, dalam hal ini ajaran agama yang dipegang erat oleh organisasi massa Islam (Muhammadiyah dapat meningkatkan kondisi ekonomi sebuah komunitas petani di Banjarnegara. Muhammadiyah memfasilitasi komunitas petani tersebut untuk menerapkan teknologi pertanian yang tepat sehingga dapat meningkatkan hasil panen secara signifikan. Hal tersebut menunjukkan bahwa agama dan teknologi pertanian memainkan peranan penting dalam memberdayakan masyarakat dan membawa transformasi sosial bagi komunitas petani di Banjarnegara. The objective of this study is to reveal how religion and agricultural technology can empower a peasant community and foster a social transformation. Survey and interview were implemented to gain the data. The object of the study was a community of peasants in Banjarnegara district that belong to a peasant organization facilitated by Muhammadiyah. The results show that religion, in this case is religious teaching tightly-hold by an Islamic mass organization (Muhammadiyah, can improve the economic condition of a community of peasants in Banjarnegara. Muhammadiyah facilitated the peasants community to apply a proper agricultural technology which can improve the crops significantly.  The study conclude that religion and agricultural technology play a great role in empowering society and bring about social transformation for peasants community in Banjarnegara.

  14. Aviation Maintenance Technology. Airframe. A204. Aircraft Welding. Instructor Material.

    Science.gov (United States)

    Oklahoma State Board of Vocational and Technical Education, Stillwater. Curriculum and Instructional Materials Center.

    This teacher's guide is designed to aid teachers in leading students through a module on aircraft welding on airframes. The module contains four units that cover the following topics: (1) gas welding and cutting; (2) brazing and soldering; (3) shielded metal arc welding; and (4) gas tungsten arc welding. Each unit follows a standardized format…

  15. REPAIR TECHNOLOGY OF THE COMPOSITE WING OF A LIGHT PLANE DAMAGED DURING AN AIRCRAFT CRASH

    Directory of Open Access Journals (Sweden)

    Andrzej ŚWIĄTONIOWSKI

    2016-09-01

    Full Text Available The increasing use of composite structures in aircraft constructions has made it necessary to develop repair methods that will restore the component’s original design strength without compromising its structural integrity. In this paper, the complex repair technology of the composite wing of a light plane, which was damaged during an aircraft crash, is described. The applied repair scheme should meet all the original design requirements for the plane structure.

  16. Application of active control technology to aircraft ride smoothing

    Science.gov (United States)

    Jacobson, I. D.; Lapins, M.

    1975-01-01

    Prototype Ride Smoothing System (RSSs) were synthesized for flight testing aboard the National Aeronautics and Space Administration General Purpose Airborne Simulator (GPAS). The systems were designed to meet comprehensive criteria including passenger comfort and aircraft handling qualities considerations. System performance estimates based on analytic expressions were compared to estimates derived from digital calculations. The effect of RSSs on pilot workload during ILS approach in turbulence was examined in a fixed-base simulator. A limited number of flights were conducted to verify predicted RSS performance. Results of these experiments indicate that RSSs reduce pilot workload and increase passenger comfort while maintaining handling qualities.

  17. Comparing the development of agricultural technology and information technology in rural Vietnam

    DEFF Research Database (Denmark)

    Kaila, Heidi Kristiina

    This paper presents a descriptive analysis on the ownership of different types of technology—both agricultural machinery and information technology—within households in rural areas of Vietnam. We find that there has been little development in the ownership of agricultural machinery, but a rapid...... expansion of information technology, especially phones. Households without phones or internet access are more likely to be poor, female-headed, have less education, and rely more on transfers. When controlling for a number of household characteristics including income, households that already own technology...

  18. Comparing the development of agricultural technology and information technology in rural Vietnam

    DEFF Research Database (Denmark)

    Kaila, Heidi Kristiina

    This paper presents a descriptive analysis on the ownership of different types of technology—both agricultural machinery and information technology—within households in rural areas of Vietnam. We find that there has been little development in the ownership of agricultural machinery, but a rapid...... expansion of information technology, especially phones. Households without phones or internet access are more likely to be poor, female-headed, have less education, and rely more on transfers. When controlling for a number of household characteristics including income, households that already own technology...

  19. Comparative Research on Sino-US Agricultural Innovation Model in Science and Technology

    Institute of Scientific and Technical Information of China (English)

    Chunjiang; ZHU; Surendra; P.Singh; Sammy; L.Comer

    2013-01-01

    This research was conducted to provide a comparative analysis of China’s and US’s agricultural innovation in science and technology and offer some guidance on the construction of agricultural innovation system in science and technology in China. The countermeasures are proposed with a hope to shorten China’s and US’s gap of agricultural innovation in science and technology by analyzing agricultural innovation model features in science and technology of the United States. The advantages of United States model of agricultural innovation in science and technology include sound legal framework safeguard, complete scientific and technological innovation system, high quality and talented personnel, sufficient technical development and extension funding, and extensive applications of modern agricultural high-tech. There is a gap in agricultural innovation between China and the United States. Agriculture innovation in science and technology in China should improve in several aspects such as agricultural legislation, construction of sound agricultural innovation system in science and technology, building first-class agricultural innovation and extension teams, establishing diversified channels for investment, and improving the applications of high technology in agriculture.

  20. Research Situation and Development Trend of Resource Recycling Technology for Agricultural Wastes

    Institute of Scientific and Technical Information of China (English)

    DU Yan-yan; ZHAO Yun-hua

    2012-01-01

    Rational utilization of agricultural waste resources is of great significance to reducing environmental pollution, improving rural ecological environment, and developing agricultural circular economy. Besides, in the context of global energy crisis, the research of resource utilization technology for agricultural wastes will exert considerable influence on survival and living of human beings. We firstly discuss about general situations of agricultural waste resources in China, research and application situations of agricultural waste recycling technology both at home and abroad. On the basis of development trend of agricultural waste recycling, we put forward countermeasures for agricultural waste recycling in China.

  1. A Bayesian Based Search and Classification System for Product Information of Agricultural Logistics Information Technology

    OpenAIRE

    2011-01-01

    Part 1: Decision Support Systems, Intelligent Systems and Artificial Intelligence Applications; International audience; In order to meet the needs of users who search agricultural products logistics information technology, this paper introduces a search and classification system of agricultural products logistics information technology search and classification. Firstly, the dictionary of field concept word was built based on analyzing the characteristics of agricultural products logistics in...

  2. Experimental research on photocatalytic oxidation air purification technology applied to aircraft cabins

    DEFF Research Database (Denmark)

    Sun, Yuexia; Fang, Lei; Wyon, David P.

    2005-01-01

    The experiment presented in this report was performed in a simulated aircraft cabin to evalu-ate the air cleaning effects of two air purification devices using Photocatalytic Oxidation (PCO) technology. Objective physical, chemical and physiological measurements and subjec-tive human assessments...

  3. Military aircraft and missile technology at the Langley Research Center: A selected bibliography

    Science.gov (United States)

    Maddalon, D. V.

    1980-01-01

    A compilation of reference material is presented on the Langley Research Center's efforts in developing advanced military aircraft and missile technology over the past twenty years. Reference material includes research made in aerodynamics, performance, stability, control, stall-spin, propulsion integration, flutter, materials, and structures.

  4. Advanced Fiber Optic-Based Sensing Technology for Unmanned Aircraft Systems

    Science.gov (United States)

    Richards, Lance; Parker, Allen R.; Piazza, Anthony; Ko, William L.; Chan, Patrick; Bakalyar, John

    2011-01-01

    This presentation provides an overview of fiber optic sensing technology development activities performed at NASA Dryden in support of Unmanned Aircraft Systems. Examples of current and previous work are presented in the following categories: algorithm development, system development, instrumentation installation, ground R&D, and flight testing. Examples of current research and development activities are provided.

  5. Impact of emerging technologies on future combat aircraft agility

    Science.gov (United States)

    Nguyen, Luat T.; Gilert, William P.

    1990-01-01

    The foreseeable character of future within-visual-range air combat entails a degree of agility which calls for the integration of high-alpha aerodynamics, thrust vectoring, intimate pilot/vehicle interfaces, and advanced weapons/avionics suites, in prospective configurations. The primary technology-development programs currently contributing to these goals are presently discussed; they encompass the F-15 Short Takeoff and Landing/Maneuver Technology Demonstrator Program, the Enhanced Fighter Maneuverability Program, the High Angle-of-Attack Technology Program, and the X-29 Technology Demonstrator Program.

  6. Advanced technology payoffs for future rotorcraft, commuter aircraft, cruise missile, and APU propulsion systems

    Science.gov (United States)

    Turk, M. A.; Zeiner, P. K.

    1986-01-01

    In connection with the significant advances made regarding the performance of larger gas turbines, challenges arise concerning the improvement of small gas turbine engines in the 250 to 1000 horsepower range. In response to these challenges, the NASA/Army-sponsored Small Engine Component Technology (SECT) study was undertaken with the objective to identify the engine cycle, configuration, and component technology requirements for the substantial performance improvements desired in year-2000 small gas turbine engines. In the context of this objective, an American turbine engine company evaluated engines for four year-2000 applications, including a rotorcraft, a commuter aircraft, a supersonic cruise missile, and an auxiliary power unit (APU). Attention is given to reference missions, reference engines, reference aircraft, year-2000 technology projections, cycle studies, advanced engine selections, and a technology evaluation.

  7. Digital Aircraft Sheet Metal Part Manufacturing System and Its Key Technology

    Institute of Scientific and Technical Information of China (English)

    Wang; Junbiao; Liu; Chuang

    2007-01-01

    The architecture of digital sheet metal manufacturing system is proposed based on the classification of sheet metal manufacturing information.The essence of digital manufacturing is the definition,management and transfer of information,and the key technologies are brought forward and described.It is pointed out that knowledge-based manufacturing elements design is necessary to make digital technology efficient.The management of all kinds of sheet metal manufacturing element information is to build single source of manufacturing data.Multi-state model-based digital transfer and coordination method is designed to provide a foundation for digital manufacturing of aircraft sheet metal part.The application of digital sheet metal manufacturing is exemplified with an aircraft sheet metal part.The application result is compared to that of the traditional analog transfer technology.It is shown that the developed technology can improve part quality,shorten manufacturing time and lower manufacturing cost.

  8. Existing Problems and Recommendations for Cultivation of Agricultural Science and Technology Talents in China

    Institute of Scientific and Technical Information of China (English)

    Hongxin; LI; Qunzhen; QU

    2014-01-01

    China is a large agricultural country. Healthy and rapid development of agriculture plays an important role in overall socialist construction of China. To realize sustainable agricultural development,cultivation of agricultural science and technology innovation talents should be strengthened. Through analyzing existing problems in cultivation of agricultural science and technology innovation talents and combining actual situation of China’s agricultural development,this paper came up with pertinent recommendations for strengthening China’s agricultural science and technology talent cultivation,including improving agricultural science and technology innovation talent cultivation system,implementing " government- industry- university- institute" talent cultivation mode,speeding up construction of experimental teaching demonstration center,and applying human resource theories.

  9. Adapting Strategic Aircraft Assets to a Changing World: Technology Insertion to Provide Flexibility

    Science.gov (United States)

    1994-09-01

    PROCESSOR L ALTm AMSS-- A MtAAn S Sute m DEU DATAI A RT HF-- Hgh Frquen- AIRCRAFT nrNTERC SUBSYST MSM St Legend: ALT- Altimeter AMSS- Altitude Motion Sensor...these are superior computer systems. To put this information in perspective, note that most 1992 consumers would not want to buy 1982 computer (8088...technology; instead, they would want to buy the latest technology, such as a 486. If they owned the older 8088, they would remember that it

  10. Fundamentals of Manufacturing Technologies for Aircraft Engine Parts Made of TiAl Based Alloys

    Directory of Open Access Journals (Sweden)

    Szkliniarz W.

    2016-09-01

    Full Text Available The study presents fundamentals of manufacturing technologies for aircraft engine construction elements, made of light, intermetallic TiAl based alloy, which is characterized by high relative strength and good creep and oxidation resistance. For smelting of alloy, the vacuum metallurgy methods were used, including application of induction furnace equipped with special crucibles made of isostatic-pressed, high-density graphite. To produce good quality construction element for aircraft engine, such as low-pressure turbine blade, there were methods of gravity casting from a very high temperature to the preheated shell moulds applied.

  11. Development of pressure containment and damage tolerance technology for composite fuselage structures in large transport aircraft

    Science.gov (United States)

    Smith, P. J.; Thomson, L. W.; Wilson, R. D.

    1986-01-01

    NASA sponsored composites research and development programs were set in place to develop the critical engineering technologies in large transport aircraft structures. This NASA-Boeing program focused on the critical issues of damage tolerance and pressure containment generic to the fuselage structure of large pressurized aircraft. Skin-stringer and honeycomb sandwich composite fuselage shell designs were evaluated to resolve these issues. Analyses were developed to model the structural response of the fuselage shell designs, and a development test program evaluated the selected design configurations to appropriate load conditions.

  12. Productivity growth and technological progress in the Brazilian agricultural sector

    Directory of Open Access Journals (Sweden)

    Marcelo Farid Pereira

    2002-12-01

    Full Text Available Starting in the 1970's, the Brazilian agricultural sector has experienced an important process of modernization, whose principal effects include advances in technological progress and gains in productivity. The primary objective of this paper is to analyze technological progress and total productivity growth in the Brazilian agricultural sector during the period from 1970 to 1996. The methodology used here is based on the Malmquist productivity index and techniques in mathematical programming called Data Envelopment Analysis. The results show that significant progress was made in this sector of the economy but concentrated in only some regions of the country.O setor agropecuário brasileiro passou por um processo de modernização a partir dos anos 70, conseqüentemente, espera-se que exista uma contrapartida de progresso tecnológico e de ganhos de produtividade para o setor. Diante de tal fato tem-se como objetivo, neste estudo, avaliar o progresso tecnológico e o crescimento da produtividade total dos fatores (PTF do setor agropecuário brasileiro ao longo do período de 1970 a 1996. A metodologia utilizada foi baseada no índice Malmquist de produtividade e nas técnicas de programação matemática denominadas de Análise de Envoltória de Dados (DEA. Os resultados alcançados foram condizentes com estudos prévios e apontam para progresso técnico e ganhos de produtividade para o setor, porém concentrados em algumas regiões.

  13. An assessment of propeller aircraft noise reduction technology

    Science.gov (United States)

    Metzger, F. Bruce

    1995-01-01

    This report is a review of the literature regarding propeller airplane far-field noise reduction. Near-field and cabin noise reduction are not specifically addressed. However, some of the approaches used to reduce far-field noise produce beneficial effects in the near-field and in the cabin. The emphasis is on propeller noise reduction but engine exhaust noise reduction by muffling is also addressed since the engine noise becomes a significant part of the aircraft noise signature when propeller noise is reduced. It is concluded that there is a substantial body of information available that can be used as the basis to reduce propeller airplane noise. The reason that this information is not often used in airplane design is the associated weight, cost, and performance penalties. It is recommended that the highest priority be given to research for reducing the penalties associated with lower operating RPM and propeller diameter while increasing the number of blades. Research to reduce engine noise and explore innovative propeller concepts is also recommended.

  14. Examining iPod Use by Texas Agricultural Science and Technology Teachers

    Science.gov (United States)

    Murphrey, Theresa Pesl; Miller, Kimberly A.; Roberts, T. Grady

    2009-01-01

    The purpose of this study was to establish baseline data regarding the adoption of iPods and similar technologies by agricultural science and technology teachers. The population consisted of all agricultural science and technology teachers in Texas. A sample of 310 was randomly drawn from the population. Study findings reveal that while…

  15. Orientation of Government’s Role in Building the Technology System of Circular Agriculture

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    This article expounds the economic characteristics of circular agricultural technology.Since the circular agricultural technology has characteristics and externality of public goods,the government participation is necessary in building the technology system of circular agriculture,in order to avoid "free rider" behavior in the consumption of public goods and internalize externality.We analyze the orientation of government’s role in building the technology system of circular agriculture:the government is the leader,designer,organizer and regulator in building the technology system of circular agriculture;the government orientates the four roles precisely in building the technology system of circular agriculture,to ensure that they do not cross the line,but be indispensable all the while.

  16. Aircraft-based CH4 flux estimates for validation of emissions from an agriculturally dominated area in Switzerland

    Science.gov (United States)

    Hiller, Rebecca V.; Neininger, Bruno; Brunner, Dominik; Gerbig, Christoph; Bretscher, Daniel; Künzle, Thomas; Buchmann, Nina; Eugster, Werner

    2014-04-01

    For regional-scale investigations of greenhouse gas budgets the spatially explicit information from local emission sources is needed, which then can be compared with flux measurements. Here we present the first validation of a section of a spatially explicit CH4 emission inventory of Switzerland. The validation was done for the agriculturally dominated Reuss Valley using measurements from a low-flying aircraft (50-500 m above ground level). We distributed national emission estimates to a grid with 500 m cell size using available geostatistical data. Validation flux measurements were obtained using the eddy covariance (EC) technique and the boundary layer budgeting (BLB) approach that only uses the mean concentrations of the same aircraft transects. Inventory estimates for the flux footprint of the aircraft measurements were lowest (median 0.40 μg CH4m-2s-1), and BLB fluxes were highest (1.02 μg CH4m-2s-1) for the Reuss Valley, with EC fluxes in between (0.62 μg CH4m-2s-1). Flux estimates from measurements and inventory are within the same order of magnitude, but measured fluxes were significantly larger than the inventory emission estimates. The differences are larger than the uncertainties associated with storage of manure, temperature dependence of emissions, diurnal cycle of enteric fermentation by cattle, and the limitations of the inventory that only covers ≥90% of all expected methane emissions. From this we deduce that it is not unlikely that the Swiss CH4 emission inventory estimates are too low.

  17. Technological heterogeneity, technical efficiency and subsidies in Czech agriculture

    Directory of Open Access Journals (Sweden)

    Kateřina MATULOVÁ

    2016-06-01

    Full Text Available This paper deals with an analysis of technological heterogeneity and technical efficiency in individual sectors of Czech agriculture after the EU enlargement in 2004. A parametric approach was used – Stochastic Frontier Analysis (SFA to address the research questions. Specifically, it is employed the Random Parameter Model specification, in which sector dummies are used to capture the intersectoral as well as intrasectoral differences in technology. The results show there is significant heterogeneity among the studied sectors (i.e., combined, plant, animal and other production. The analysis showed that Capital and Material are being substituted more and more for Labour in all sectors, especially in animal production. This result is to be expected, as the technology in this sector is labour-saving. However, it was found out that land elasticity is quite low in plant production and combined production; since Land is a production factor that significantly determines the level of final output, this result is quite strange. One possible explanation may be the policy of distributing subsidies among farmers, when the land is kept but used in a more extensive way. The intrasectoral differences in technology are statistically significant for all inputs. Average technical efficiency is highest in other production and lowest in animal production, while it is approximately at the same level in plant production and combined production. It was discovered that diversification (combined production of activities lowers the level of technical efficiency compared to specialisation (plant production, but on the other hand it does allow for alleviation of the negative impacts of specialization (animal production by optimizing the production program. Finally, the analysis did confirm a statistically significant positive relationship between SAPS subsidies and technical efficiency. Organic farming has a negative impact on technical efficiency and the influence of

  18. Unmanned aircraft systems in wildlife research: Current and future applications of a transformative technology

    Science.gov (United States)

    Christie, Katherine S.; Gilbert, Sophie L.; Brown, Casey L.; Hatfield, Michael; Hanson, Leanne

    2016-01-01

    Unmanned aircraft systems (UAS) – also called unmanned aerial vehicles (UAVs) or drones – are an emerging tool that may provide a safer, more cost-effective, and quieter alternative to traditional research methods. We review examples where UAS have been used to document wildlife abundance, behavior, and habitat, and illustrate the strengths and weaknesses of this technology with two case studies. We summarize research on behavioral responses of wildlife to UAS, and discuss the need to understand how recreational and commercial applications of this technology could disturb certain species. Currently, the widespread implementation of UAS by scientists is limited by flight range, regulatory frameworks, and a lack of validation. UAS are most effective when used to examine smaller areas close to their launch sites, whereas manned aircraft are recommended for surveying greater distances. The growing demand for UAS in research and industry is driving rapid regulatory and technological progress, which in turn will make them more accessible and effective as analytical tools.

  19. Data and analysis procedures for improved aerial applications mission performance. [agricultural aircraft wing geometry

    Science.gov (United States)

    Holmes, B. J.; Morris, D. K.; Razak, K.

    1979-01-01

    An analysis procedure is given and cases analyzed for the effects of wing geometry on lateral transport of a variety of agricultural particles released in the wake of an agricultural airplane. The cases analyzed simulate the release of particles from a fuselage centerline-mounted dry material spreader; however, the procedure applies to particles released anywhere along the wing span. Consideration is given to the effects of taper ratio, aspect ratio, wing loading, and deflected flaps. It is noted that significant lateral transport of large particles can be achieved using high-lift devices positioned to create a strong vortex near the location of particle release.

  20. Use of cyanobacterial diazotrophic technology in rice agriculture

    Energy Technology Data Exchange (ETDEWEB)

    Tiwari, D.N.; Kumar, A.; Mishra, A.K. [Banaras Hindu Univ., Varanasi (India)

    1991-12-31

    Diazotrophic cyanobacteria are photoautotrophic organisms that require sunlight as a sole energy source for the fixation of carbon and nitrogen. Therefore, they have great potential as biofertilizers, and their use will decrease fuel demand for fertilizer production. The agronomic potential of heterocystous cyanobacteria, either free-living or in symbiotic association with water fern Azolla, has long been recognized. This has led to the development of small scale biotechnology involving the use of paddy soils with appropriate cyanobacterial strains as biofertilizers in rice culture, as has been reported from China, Egypt, Philippines, and India. Besides increasing soil fertility and sustaining rice yield, these forms are also reported to benefit rice seedlings by producing growth-promoting substances, the nature of which is said to resemble gibberellins. Whereas the incorporation of nif genes into the rice plants by using tissue culture and modern genetic tools remain one of the ambitious research goals, the use of cyanobacterial diazotrophic technology in rice agriculture offers an immediate or even long-term alternative to synthetic nitrogen fertilizers, particularly in developing countries and the world as a whole. However, one of the weaknesses in this technology is the heavy application of several toxic agrochemicals, especially herbicides, which are reported in most cases as inhibitors of cyanobacterial diazotrophic growth, and in some cases as mutagenic. Naturally, a successful biotechnology requires the selection of suitable diazotrophic strains, as biofertilizers, that could tolerate the field-dose concentrations of herbicides and secrete ammonia.

  1. Method of Choosing the Information Technology System Supporting Management of the Military Aircraft Operation

    Directory of Open Access Journals (Sweden)

    Barszcz Piotr

    2014-12-01

    Full Text Available The paper presents a method of choosing the information technology system, the task of which is to support the management process of the military aircraft operation. The proposed method is based on surveys conducted among direct users of IT systems used in aviation of the Polish Armed Forces. The analysis of results of the surveys was conducted using statistical methods. The paper was completed with practical conclusions related to further usefulness of the individual information technology systems. In the future, they can be extremely useful in the process of selecting the best solutions and integration of the information technology systems

  2. Cost benefit study of advanced materials technology for aircraft turbine engines

    Science.gov (United States)

    Hillery, R. V.; Johnston, R. P.

    1977-01-01

    The cost/benefits of eight advanced materials technologies were evaluated for two aircraft missions. The overall study was based on a time frame of commercial engine use of the advanced material technologies by 1985. The material technologies evaluated were eutectic turbine blades, titanium aluminide components, ceramic vanes, shrouds and combustor liners, tungsten composite FeCrAly blades, gamma prime oxide dispersion strengthened (ODS) alloy blades, and no coat ODS alloy combustor liners. They were evaluated in two conventional takeoff and landing missions, one transcontinental and one intercontinental.

  3. Agricultural Science and Technology Teachers' Perceptions of iPod and Mp3 Technology Integration into Curricular and Cocurricular Activities

    Science.gov (United States)

    Murphrey, Theresa Pesl; Miller, Kimberly A.; Roberts, T. Grady

    2009-01-01

    The purpose of this study was to describe agricultural science and technology teachers' reaction to iPod and mp3 technology use and potential use in both curricular and cocurricular activities. A total of 112 unique respondents provided written responses to open-ended questions. Study findings reveal that agricultural science and technology…

  4. The influence of engine technology advancements on aircraft economics

    Science.gov (United States)

    Witherspoon, J. W.; Gaffin, W. O.

    1973-01-01

    A technology advancement in a new powerplant has both favorable and unfavorable effects. Increased bypass ratio and compression ratio, coupled with high turbine temperatures, improve performance but also increase engine price and maintenance cost. The factors that should be evaluated in choosing an engine for airline use are discussed. These factors are compared for two engines that might be considered for future 150 to 200 passenger airplanes: an all-new turbofan and a quiet derivative of an existing first generation turbofan. The results of the performance and cost evaluations of the example engines are reduced to common units so they can be combined.

  5. The influence of engine technology advancements on aircraft economics

    Science.gov (United States)

    Witherspoon, J. W.; Gaffin, W. O.

    1973-01-01

    A technology advancement in a new powerplant has both favorable and unfavorable effects. Increased bypass ratio and compression ratio, coupled with high turbine temperatures, improve performance but also increase engine price and maintenance cost. The factors that should be evaluated in choosing an engine for airline use are discussed. These factors are compared for two engines that might be considered for future 150 to 200 passenger airplanes: an all-new turbofan and a quiet derivative of an existing first generation turbofan. The results of the performance and cost evaluations of the example engines are reduced to common units so they can be combined.

  6. Modeling the impact of improved aircraft operations technologies on the environment and airline behavior

    Science.gov (United States)

    Foley, Ryan Patrick

    The overall goal of this thesis is to determine if improved operations technologies are economically viable for US airlines, and to determine the level of environmental benefits available from such technologies. Though these operational changes are being implemented primarily with the reduction of delay and improvement of throughput in mind, economic factors will drive the rate of airline adoption. In addition, the increased awareness of environmental impacts makes these effects an important aspect of decision-making. Understanding this relationship may help policymakers make decisions regarding implementation of these advanced technologies at airports, and help airlines determine appropriate levels of support to provide for these new technologies. In order to do so, the author models the behavior of a large, profit-seeking airline in response to the introduction of advanced equipage allowing improved operations procedures. The airline response included changes in deployed fleet, assignment of aircraft to routes, and acquisition of new aircraft. From these responses, changes in total fleet-level CO2 emissions and airline profit were tallied. As awareness of the environmental impact of aircraft emissions has grown, several agencies (ICAO, NASA) have moved to place goals for emissions reduction. NASA, in particular, has set goals for emissions reduction through several areas of aircraft technology. Among these are "Operational Improvements," technologies available in the short-term through avionics and airport system upgrades. The studies in this thesis make use of the Fleet-Level Environmental Evaluation Tool (FLEET), a simulation tool developed by Purdue University in support of a NASA-sponsored research effort. This tool models the behavior of a large, profit-seeking airline through an allocation problem. The problem is contained within a systems dynamics type approach that allows feedback between passenger demand, ticket price, and the airline fleet composition

  7. Modern and prospective technologies for weather modification activities: A look at integrating unmanned aircraft systems

    Science.gov (United States)

    Axisa, Duncan; DeFelice, Tom P.

    2016-09-01

    Present-day weather modification technologies are scientifically based and have made controlled technological advances since the late 1990s, early 2000s. The technological advances directly related to weather modification have primarily been in the decision support and evaluation based software and modeling areas. However, there have been some technological advances in other fields that might now be advanced enough to start considering their usefulness for improving weather modification operational efficiency and evaluation accuracy. We consider the programmatic aspects underlying the development of new technologies for use in weather modification activities, identifying their potential benefits and limitations. We provide context and initial guidance for operators that might integrate unmanned aircraft systems technology in future weather modification operations.

  8. Anti-aliasing in Aircraft Cockpit Display System Based on Modified Bresenham Algorithm and Virtual Technology

    Directory of Open Access Journals (Sweden)

    Dan Sun

    2014-06-01

    Full Text Available In this paper, an improved Bresenham algorithm is proposed in order to improve the display effect of the digital instrument display systems in aircraft and aviation simulators with following the ARINC 661 specification. According to the algorithm, the pixel brightness is calculated according to the proportional relation of the distance to the pixel for realizing the anti-aliasing. In Combine with areal sampled and double buffer image processing technology, the idea can increase the operation efficiency compared with the traditional method. In accordance with the analysis of the ARINC 661, the air data system instrument is implemented in the VAPS. Experimental results reveal that the improved algorithm and digital image processing technology can indeed solve display distortion problems more effectively and accurately, the display effect is improved obviously. The implemented schemes can achieve the airborne electronic display system on the high performance and satisfy aircraft airworthiness requirements and standards

  9. Experimental research on photocatalytic oxidation air purification technology applied to aircraft cabins

    DEFF Research Database (Denmark)

    Sun, Yuexia; Fang, Lei; Wyon, David P.

    2005-01-01

    The experiment presented in this report was performed in a simulated aircraft cabin to evalu-ate the air cleaning effects of two air purification devices using Photocatalytic Oxidation (PCO) technology. Objective physical, chemical and physiological measurements and subjec-tive human assessments ...... observed after the first 3¼ hours of exposure. After 6 hours of expo-sure, a positive effect of using either PCO units on symptoms of dizziness and claustrophobia were observed....

  10. Technological Innovation Characteristics and Capacity Enhancement Ways for the Agricultural Science and Technology Enterprises in Beijing City

    Institute of Scientific and Technical Information of China (English)

    Ping LI; Ruimei WANG; Xun ZHENG

    2016-01-01

    From the perspective of innovation mechanism,capital,personnel,achievements and conversion,this study analyzes the current situation of technological innovation in Beijing agricultural science and technology enterprises,and summarizes the characteristics including single financing channel of R&D funds,low conversion rate of innovative products,unbalanced distribution of technology and innovative talents,the underestimated position of enterprises as the main body of technological innovation,the large gap of innovation achievements between developed provinces and Beijing.At last,this study puts forward the ways to improve technological innovation ability in Beijing agricultural science and technology enterprises as follows:developing technological innovation strategies;improving the R&D expenditure and expanding the financing channels;perfecting the mechanism of professional personnel training in agricultural technology innovation;enhancing the level of innovation performance management;establishing and improving the corporate culture of innovation and cultivating technology innovation spirit.

  11. Agriculture

    Science.gov (United States)

    The EPA Agriculture Resource Directory offers comprehensive, easy-to-understand information about environmental stewardship on farms and ranches; commonsense, flexible approaches that are both environmentally protective and agriculturally sound.

  12. Design of Prototype-Technology Evaluator and Research Aircraft (PTERA) Configuration for Loss of Control Flight Research Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The Area-I team has developed and fabricated the unmanned Prototype-Technology Evaluation and Research Aircraft or PTERA ("ptera" being Greek for wing, or...

  13. Technology Innovation Mode of Agricultural Leading Enterprise——Based on the Virtual Organization Mode

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Based on the definition of technology innovation of agricultural leading enterprises by domestic and foreign experts and scholars,technology innovation of agricultural enterprises is a process of new market increment,which uses new knowledge,technology,process and production mode,produces new products,offers new services and realizes commercialization. Characteristics of agricultural technology innovation are introduced,such as obvious regionality,relatively high risk,long-term periodicity and public attribute. Predicament for technology innovation of leading enterprises is analyzed,such as technical constraints,financial constraints and personnel constraints. Technological Innovation Mode can be classified into three modes of independent innovation,imitative innovation and cooperative innovation by the method of technology innovation. Among them,since there are some defects in the technology innovation process,independent innovation and imitative innovation are generally not used for the innovation of agricultural enterprises. Cooperative Innovation Mode can rely on foreign aid,can realize complementary advantages and achievement sharing,and can be widely applied in the agricultural innovation enterprise. Virtual organization in cooperation innovation mode is described,which makes up for technology,capital and human resources barriers in the process of agricultural enterprise innovation. Therefore,this mode is popular among the agricultural innovation enterprise.

  14. Technologies for Highly Manoeuvrable Aircraft (Les Technologies pour les Aeronefs a Haute Manoeuvrabilite)

    Science.gov (United States)

    1994-03-01

    creation de touiion. grouette de Ia derive avec l’incidence (classique de la configuration nmonoddrive dorsale ) a Pu dire retrouv&~ 6.2...msultiplicatiori efte deflct chan eily bieliited of ith eonn pored by the gravity constant dividJed by aircraft speed results in the thr hut changig tabe

  15. Aeroelastic Tailoring of Transport Aircraft Wings: State-of-the-Art and Potential Enabling Technologies

    Science.gov (United States)

    Jutte, Christine; Stanford, Bret K.

    2014-01-01

    This paper provides a brief overview of the state-of-the-art for aeroelastic tailoring of subsonic transport aircraft and offers additional resources on related research efforts. Emphasis is placed on aircraft having straight or aft swept wings. The literature covers computational synthesis tools developed for aeroelastic tailoring and numerous design studies focused on discovering new methods for passive aeroelastic control. Several new structural and material technologies are presented as potential enablers of aeroelastic tailoring, including selectively reinforced materials, functionally graded materials, fiber tow steered composite laminates, and various nonconventional structural designs. In addition, smart materials and structures whose properties or configurations change in response to external stimuli are presented as potential active approaches to aeroelastic tailoring.

  16. HAWAII PUBLIC OPINION ON AGRICULTURAL PRODUCTS DERIVED FROM GENETICALLY MODIFIED ORGANISM (GMO) TECHNOLOGY

    OpenAIRE

    Ferguson, Carol; Chan-Halbrendt, Catherine; Wen, Na

    2002-01-01

    This article studied Hawaii public opinion on agricultural products and processes using GMO technology. We used telephone to interview the people in each island of Hawaii. We found out that the favorability rating toward the attributes of GMO technological application differ based on the nature of GMO benefits. And sociodemographic variables played a significant difference in the preference of using GMO technology on producing agricultural products and process. Most significant associations w...

  17. Economic evaluation of GPS technology in Serbian agriculture

    OpenAIRE

    Marković, Dragan; Pokrajac, Slobodan; Simonović, Vojislav; Marković, Ivana

    2013-01-01

    This paper examined the level of savings in the application of the most modern technical systems for satellite guidance and control over performing agricultural operations throughout the season. The exemplary property was Agricultural Corporation Belgrade (PKB), which covers about 21.000 hectares of arable land. The effects of plot shape and direction of movement of tractor-attachment units in calculating the savings from reduced overlapping of adjacent passes were studied. The analysis was c...

  18. Agricultural Technology--A Real Industry-Education Partnership [and] John Deere Ag Tech in New York.

    Science.gov (United States)

    Bamford, Paul J.; Ginsburg, Alan

    1995-01-01

    Bamford describes the partnership between John Deere and colleges in the United States and Canada to train technicians in the latest agricultural technology. Ginsburg discusses the John Deere Agricultural Technology program at State University of New York-Cobleskill. (JOW)

  19. Technologies for adaptation to climate change. Examples from the agricultural and water sectors in Lebanon

    DEFF Research Database (Denmark)

    Trærup, Sara Lærke Meltofte; Stephan, Jean

    2015-01-01

    for integrating adaptation technologies into the planning and implementation of on-going and future projects. Based on local-level data from a technology needs assessment project in Lebanon, this paper presents two examples of the economic feasibility of implementing adaptation technologies in the agricultural...

  20. Technology for future low-pollution air-craft gas turbines. Technologie fuer kuenftige schadstoffarme Luftfahrtgasturbinen

    Energy Technology Data Exchange (ETDEWEB)

    Weyer, H.B. (Inst. fuer Antriebstechnik, Deutsche Forschungsanstalt fuer Luft- und Raumfahrt e.V. (DLR), Koeln (Germany))

    1992-01-01

    The author highlights the state of the art and development of aviation and the resulting atmospheric pollution with a special reference to civilian air traffic at cruising altitude. The propagation and long-term chemical effect of power-unit exhaust gases are not discussed; these complex processes of diffusion and atmospheric chemistry are dealt with in papers of their own. The author focusses on future aviation technologies which will improve the pollutivity and profitability of air-craft while maintaining their high level of operational safety. (orig.)

  1. Variable pitch fan system for NASA/Navy research and technology aircraft

    Science.gov (United States)

    Ryan, W. P.; Black, D. M.; Yates, A. F.

    1977-01-01

    Preliminary design of a shaft driven, variable-pitch lift fan and lift-cruise fan was conducted for a V/STOL Research and Technology Aircraft. The lift fan and lift-cruise fan employed a common rotor of 157.5 cm diameter, 1.18 pressure ratio variable-pitch fan designed to operate at a rotor-tip speed of 284 mps. Fan performance maps were prepared and detailed aerodynamic characteristics were established. Cost/weight/risk trade studies were conducted for the blade and fan case. Structural sizing was conducted for major components and weights determined for both the lift and lift-cruise fans.

  2. How to Apply Data Mining Technology to the Study of Agricultural Information Data Resources?

    Institute of Scientific and Technical Information of China (English)

    Xindong; WANG; Haoyue; XU; Qian; GAO; Haiyan; CAI; Junhai; LU; Min; LI

    2013-01-01

    This paper makes a brief description of the definition and methods of data mining.It describes the characteristics of agricultural data(value delivery,specialization,spatio-temporal bidimensionality)and the status of application of data mining technology in agriculture.

  3. Adoption of Information and Communication Technologies (ICTs) by Agricultural Science and Extension Teachers in Abuja, Nigeria

    Science.gov (United States)

    Alabi, Olugbenga Omotayo

    2016-01-01

    This study examined adoption of Information and Communication Technologies (ICTs) by agricultural science and extension teachers in Abuja, Nigeria. Specifically, the objectives are to: identify the background and demographic characteristics of agricultural science and extension teachers in the study area; examine the factors influencing adoption…

  4. THE ECONOMIC IMPACT OF IMPROVED AGRICULTURAL TECHNOLOGY ON CASSAVA PRODUCTIVITY IN KOGI STATE OF NIGERIA

    Directory of Open Access Journals (Sweden)

    Ilemona Adofu

    2013-07-01

    Full Text Available This paper assessed the economic impact of improved agricultural technologies on cassava productivity in Kogi State, Nigeria. The results are drawn from a household survey covering the agricultural season of 2009/2010. The data obtained from interview schedule was subjected to descriptive and inferential statistical analysis. Descriptive statistics for this study include frequency, percentages and means. The hypothesis was tested using chisquare. The result shows that 79.33% of the respondents adopt the use of improved variety within the period under study. The analysis done on the revenue of the respondents before and after the adoption of the improved agricultural technology shows that revenue of farmers after the adoption of innovations are better off than revenue generated before adoption by N27,750 on the average per farmer. This result shows that the impact of improved agricultural technologies on cassava productivity is positive. Additionally, the results attest to the importance of increasing agricultural productivity in tandem with improvements on the adoption and use of improved agricultural technologies and its availability to the reach of farmers with the farmers’ ability to store food. This findings is consistence with Idachaba and Ayoola, (1995 who observed that improved agricultural helped in increasing agricultural productivity.

  5. Urban Elementary Students' Conceptions of Learning Goals for Agricultural Science and Technology

    Science.gov (United States)

    Trexler, Cary J.; Hess, Alexander J.; Hayes, Kathryn N.

    2013-01-01

    Nationally, both science and agricultural education professional organizations have identified agriculture as a fundamental technology to be studied by students, with the goal of achieving an understanding of the agri-food system necessary for democratic participation. Benchmarks representing the content that K-12 children need to understand about…

  6. Agriculture in the xxi century: transgenic plants role in agricultural sector´s technological development

    Directory of Open Access Journals (Sweden)

    Rodrigo Artunduaga Salas

    2011-12-01

    Full Text Available The new advances in biotechnology, especially in the completion of the Arabidopsis thaliana, genome sequence has profound implications for human health as well as plant biology and agriculture. It will permit us to know the action of all the genes involved in the key growing and development processes of plants. Modification of the structure of genes will allow the regulation of the expression of some characteristics such as the size of the leaves or the dynamics of the roots and fruits growth. In this way, the commercialization of the products of the new biotechnologies will influence in this century´s nations, agricultural production, productivity and food supply. The challenges and opportunities for the countries of Latin America and the Caribbean (LAC are enormous, due to the rich base of their flora, fauna and microorganisms resources, which are essential to the pharmaceutical and feeding industries. The international Community recognizes the benefits of Biotechnology, but it also advocate more inquiry into the impacts of advanced agricultural biotechnologies on the environment, food system, structure of agriculture, rural communities, and population health.The countries of LAC should continue the development and improvement of the regulatory framework for preventing or minimizing the possible risks of the use and management of the transgenic organisms in their territory, and therefore, be able to make use of their potential benefits, ensuring the protection of public health and the environment.

  7. A methodology to enable rapid evaluation of aviation environmental impacts and aircraft technologies

    Science.gov (United States)

    Becker, Keith Frederick

    Commercial aviation has become an integral part of modern society and enables unprecedented global connectivity by increasing rapid business, cultural, and personal connectivity. In the decades following World War II, passenger travel through commercial aviation quickly grew at a rate of roughly 8% per year globally. The FAA's most recent Terminal Area Forecast predicts growth to continue at a rate of 2.5% domestically, and the market outlooks produced by Airbus and Boeing generally predict growth to continue at a rate of 5% per year globally over the next several decades, which translates into a need for up to 30,000 new aircraft produced by 2025. With such large numbers of new aircraft potentially entering service, any negative consequences of commercial aviation must undergo examination and mitigation by governing bodies so that growth may still be achieved. Options to simultaneously grow while reducing environmental impact include evolution of the commercial fleet through changes in operations, aircraft mix, and technology adoption. Methods to rapidly evaluate fleet environmental metrics are needed to enable decision makers to quickly compare the impact of different scenarios and weigh the impact of multiple policy options. As the fleet evolves, interdependencies may emerge in the form of tradeoffs between improvements in different environmental metrics as new technologies are brought into service. In order to include the impacts of these interdependencies on fleet evolution, physics-based modeling is required at the appropriate level of fidelity. Evaluation of environmental metrics in a physics-based manner can be done at the individual aircraft level, but will then not capture aggregate fleet metrics. Contrastingly, evaluation of environmental metrics at the fleet level is already being done for aircraft in the commercial fleet, but current tools and approaches require enhancement because they currently capture technology implementation through post

  8. Determinants of agricultural water saving technology adoption: an empirical study of 10 provinces of China

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    In recent years,China has been faced by an increasingly severe water shortage due to the continua growth of demand on water resources.Although the Chinese government has been actively promoting the agricultural water-saving technology adoption,it is ill-informed of the adoption degree of the current agricultural water saving technologies as well as the function of the governmental policies.Therefore,this paper analyzes the aforesaid problems based on investigative data of 10 provinces in China.The results demonstrate that although there is a rapid increase of adopted agricultural water-saving technologies,the actual adoption area is rather limited.Moreover,the governmental policies and scarcity of water resources are the determinants of agricultural water-saving technology adoption.Ultimately,the paper proposes some policy suggestions.

  9. Designing and Realization of Database Platform of County Agricultural Production Technology in Yunnan Province

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    According to the objective reality in Yunnan Province,such as great difference of weather,a great proportion of minorities,technological backwardness of agricultural production,low conversion rate of research accomplishments,and a limited number of agricultural technical personnel,ASP.NET technique and SQL Server 2005 database technique are adopted.Database platform of county agricultural production technology in Yunnan Province is established by using B/S structure.This platform includes presentation layer,application layer,and data layer,involving regional information,technology column information,technology classification information,technology content and other databases.It has six functional modules,namely information browse,system management,regional maintenance,technical section maintenance,category maintenance and technical information release,integrating crop cultivation,livestock breeding,economic forest management,plant protection,agricultural products processing,agricultural machinery use and other agricultural technical information.This platform can exchange information dynamically with the client,perform the query request from users,and send the result to users.This database platform has friendly interface,profuse information,high pertinency and so on,which offers rich and reliable information resources to farmers,agricultural technical personnel,and government.At present,this platform has been popularized in some areas of Yunnan Province and has obtained good results.

  10. Aircraft Loss of Control: Problem Analysis for the Development and Validation of Technology Solutions

    Science.gov (United States)

    Belcastro, Christine M.; Newman, Richard L.; Crider, Dennis A.; Klyde, David H.; Foster, John V.; Groff, Loren

    2016-01-01

    Aircraft loss of control (LOC) is a leading cause of fatal accidents across all transport airplane and operational classes. LOC can result from a wide spectrum of precursors (or hazards), often occurring in combination. Technologies developed for LOC prevention and recovery must therefore be effective under a wide variety of conditions and uncertainties, including multiple hazards, and the validation process must provide a means of assessing system effectiveness and coverage of these hazards. This paper provides a detailed description of a methodology for analyzing LOC as a dynamics and control problem for the purpose of developing effective technology solutions. The paper includes a definition of LOC based on several recent publications, a detailed description of a refined LOC accident analysis process that is illustrated via selected example cases, and a description of planned follow-on activities for identifying future potential LOC risks and the development of LOC test scenarios. Some preliminary considerations for LOC of Unmanned Aircraft Systems (UAS) and for their safe integration into the National Airspace System (NAS) are also discussed.

  11. Application of methane fermentation technology into organic wastes in closed agricultural system

    Science.gov (United States)

    Endo, Ryosuke; Kitaya, Yoshiaki

    Sustainable and recycling-based systems are required in space agriculture which takes place in an enclosed environment. Methane fermentation is one of the most major biomass conversion technologies, because (1) it provides a renewable energy source as biogas including methane, suitable for energy production, (2) the nutrient-rich solids left after digestion can be used as compost for agriculture. In this study, the effect of the application of methane fermentation technology into space agriculture on the material and energy cycle was investigated.

  12. Agricultural and Food Processing Applications of Pulsed Power Technology

    Science.gov (United States)

    Takaki, Koichi; Ihara, Satoshi

    Recent progress of agricultural and food processing applications of pulsed power is described in this paper. Repetitively operated compact pulsed power generators with a moderate peak power have been developed for the agricultural and the food processing applications. These applications are mainly based on biological effects and can be categorized as decontamination of air and liquid, germination promotion, inhabitation of saprophytes growth, extraction of juice from fruits and vegetables, and fertilization of liquid medium, etc. Types of pulsed power that have biological effects are caused with gas discharges, water discharges, and electromagnetic fields. The discharges yield free radicals, UV radiation, intense electric field, and shock waves. Biologically based applications of pulsed power are performed by selecting the type that gives the target objects the adequate result from among these agents or byproducts. For instance, intense electric fields form pores on the cell membrane, which is called electroporation, or influence the nuclei.

  13. NASA-UVa Light Aerospace Alloy and Structures Technology Program: Aluminum-Based Materials for High Speed Aircraft

    Science.gov (United States)

    Starke, E. A., Jr. (Editor)

    1996-01-01

    This report is concerned with 'Aluminum-Based Materials for High Speed Aircraft' which was initiated to identify the technology needs associated with advanced, low-cost aluminum base materials for use as primary structural materials. Using a reference baseline aircraft, these materials concept will be further developed and evaluated both technically and economically to determine the most attractive combinations of designs, materials, and manufacturing techniques for major structural sections of an HSCT. Once this has been accomplished, the baseline aircraft will be resized, if applicable, and performance objectives and economic evaluations made to determine aircraft operating costs. The two primary objectives of this study are: (1) to identify the most promising aluminum-based materials with respect to major structural use on the HSCT and to further develop those materials, and (2) to assess these materials through detailed trade and evaluation studies with respect to their structural efficiency on the HSCT.

  14. Discussion on Modern Agricultural Science and Technology Demonstration Garden with the Guiding of Agricultural Ecotourism-analyzing Conception Planning for Modern Agricultural Science and Technology Demonstration Field of Ten Thousands’ Mu Coffee and Nuts of Huaqiaoba

    Directory of Open Access Journals (Sweden)

    Yang Liu

    2013-03-01

    Full Text Available Modern agricultural science and technology demonstration fields emerge and flourish with the increasing of the adjustment of agricultural industrial structure and the rising of characteristic ecotourism. The study tried to discuss the modern agricultural science and technology demonstration garden with the guiding of agricultural ecotourism by analyzing conception planning for modern agricultural science and technology demonstration field of ten thousands’ Mu coffee and nuts in Huaqiaoba, Mangshi, Dehong, Yunnan. The planning respected current situation of natural ecology, established a tourism theme image of “planting coffee trees and also drawing golden phoenixes” in view of SWOT analyzing of ecotourism, put forward a planning idea of “nature and ecology, culture and human, science and technology and modern” and especially expounded the structure of total planning layout of “one axis, one circle, one nucleus, sixteen areas and twenty four points” and the contents of specific functional areas around three key functions: coffee planting demonstration, agricultural ecotourism, industrial leisure vacation.

  15. Technology adaptation and employment in the agricultural tools and equipment industry of Bangladesh.

    OpenAIRE

    Ahmad QK; Rahman KM; Islam Kmn; Ali ME

    1984-01-01

    ILO pub-WEP pub. Working paper on employment and choice of technology in agricultural machinery and other small scale industries in Bangladesh - examines industrial structure, industrial workers' age, sex, educational level, on the job training and working conditions; reviews capital investment, productivity, sources and availability of raw materials, financing and marketing problems; discusses technology transfer. Statistical tables.

  16. Precision Agriculture Technologies Positively Contributing to GHG Emissions Mitigation, Farm Productivity and Economics

    Directory of Open Access Journals (Sweden)

    Athanasios Balafoutis

    2017-07-01

    Full Text Available Agriculture is one of the economic sectors that affect climate change contributing to greenhouse gas emissions directly and indirectly. There is a trend of agricultural greenhouse gas emissions reduction, but any practice in this direction should not affect negatively farm productivity and economics because this would limit its implementation, due to the high global food and feed demand and the competitive environment in this sector. Precision agriculture practices using high-tech equipment has the ability to reduce agricultural inputs by site-specific applications, as it better target inputs to spatial and temporal needs of the fields, which can result in lower greenhouse gas emissions. Precision agriculture can also have a positive impact on farm productivity and economics, as it provides higher or equal yields with lower production cost than conventional practices. In this work, precision agriculture technologies that have the potential to mitigate greenhouse gas emissions are presented providing a short description of the technology and the impacts that have been reported in literature on greenhouse gases reduction and the associated impacts on farm productivity and economics. The technologies presented span all agricultural practices, including variable rate sowing/planting, fertilizing, spraying, weeding and irrigation.

  17. Impact of Agricultural Extension Services on Technology Adoption and Crops Yield: Empirical Evidence from Pakistan

    Directory of Open Access Journals (Sweden)

    Akhter Ali

    2013-11-01

    Full Text Available The present study was carried out in the rice-wheat area of Pakistani Punjab. The data for the study was collected from three main districts of central Punjab Province i.e. Gujranwala, Sheikhupura and Hafizabad. In total 234 farmers were interviewed. The impact of agricultural extension services was estimated on adoption of new improved technologies and crop yields. The propensity score matching approach for impact evaluation was employed in the current study to correct for potential sample selection biasedness that may arise due to systematic differences between the farmers having benefited from agricultural extension services and not benefited from agricultural extension services. The empirical results indicate that agricultural extension services play a significant role in adoption of improved agricultural technologies like laser leveling, rice and wheat varieties. The farmers having benefitted from agricultural extension services were also getting higher rice and wheat yields. The results also indicates that mostly the large farmers are getting benefits from agricultural extension services and small scale farmers have less access to agricultural extension services.

  18. STRUCTURAL AND TECHNOLOGICAL ANALYSIS OF THE AIRCRAFT LIQUID-GAS SYSTEMS

    Directory of Open Access Journals (Sweden)

    Mr. Dmitrii G. Kolykhalov

    2016-09-01

    Full Text Available Тhis article is devoted to the gas-liquid systems of the aircraft and their structural and technological analysis. The paper shows the characteristics of pipelines, considers the types of working fluids and gases and covers the range of perceived internal pressures. The paper presents the classification of pipelines of flying vehicles from the point of view of their working conditions, taking into account the perceived internal pressure. The article also shows the classification scheme of major groups and types of pipe connections and fittings. The article focuses on the scheme of permanent joints made with soldering and welding, as well as the split of mobile and fixed joints of different types. The authors study the combined connections. The authors have also developed classification schemes of aircraft piping systems that depend on the system pressure. A classification scheme of piping connections, depending on the method of connection, mobility, presence of seals is singled out. The research is ilustrated with examples of compounds of different types.

  19. Aircraft corrosion and crack inspection using advanced magneto-optic imaging technology

    Science.gov (United States)

    Thome, David K.; Fitzpatrick, Gerald L.; Skaugset, Richard L.; Shih, William C.

    1996-11-01

    A next generation magneto-optic imaging system, the MOI 303, has recently been introduced with the ability to generate real-time, complete, 2D eddy current images of cracks and corrosion in aircraft. The new imaging system described features advanced, digital remote control operation and on- screen display of setup parameters for ease of use. This instrument gives the inspector the capability to more rapidly scan large surfaces areas. The magneto-optic/eddy current imaging technology has already been formally approved for inspection of surface cracking on an aircraft fuselage. The improved magneto-optic imager is now poised to aid rapid inspection for corrosion and subsurface cracking. Previous magneto-optic imaging systems required the inspector to scan the surface twice for complete inspection coverage: a second scan was necessary with the imager rotated about 90 degrees from the orientation of the first pass. However, by providing eddy current excitation simultaneously from two orthogonal directions, complete, filled-in magneto-optic images are now generated regardless of the orientation of the imager. THese images are considerably easier to interpret and evaluate. In addition, there is a synergism obtained in applying eddy current excitation simultaneously in multiple directions: better penetration is obtained and the resulting images have better signal to noise levels compared to those produced with eddy current excitation applied only in one direction. Examples of these improved images are presented.

  20. Technological Approaches to Sustainable Agriculture at a Crossroads: An Agroecological Perspective

    Directory of Open Access Journals (Sweden)

    Miguel A. Altieri

    2017-02-01

    Full Text Available Most efforts to improve agricultural production remain focused on practices driven by an intensification agenda and not by an agroecological one. Agroecology transcends the reformist notion of organic agriculture and sustainable intensification proponents who contend that changes can be achieved within the dominant agroindustrial system with minor adjustments or “greening” of the current neoliberal agricultural model. In the technological realm, merely modifying practices to reduce input use is a step in the right direction but does not necessarily lead to the redesign of a more self sufficient and autonomous farming system. A true agroecological technological conversion calls into question monoculture and the dependency on external inputs. Traditional farming systems provide models that promote biodiversity, thrive without agrochemicals, and sustain year-round yields. Conversion of conventional agriculture also requires major social and political changes which are beyond the scope of this paper.

  1. Synthetic Vision System Commercial Aircraft Flight Deck Display Technologies for Unusual Attitude Recovery

    Science.gov (United States)

    Prinzel, Lawrence J., III; Ellis, Kyle E.; Arthur, Jarvis J.; Nicholas, Stephanie N.; Kiggins, Daniel

    2017-01-01

    A Commercial Aviation Safety Team (CAST) study of 18 worldwide loss-of-control accidents and incidents determined that the lack of external visual references was associated with a flight crew's loss of attitude awareness or energy state awareness in 17 of these events. Therefore, CAST recommended development and implementation of virtual day-Visual Meteorological Condition (VMC) display systems, such as synthetic vision systems, which can promote flight crew attitude awareness similar to a day-VMC environment. This paper describes the results of a high-fidelity, large transport aircraft simulation experiment that evaluated virtual day-VMC displays and a "background attitude indicator" concept as an aid to pilots in recovery from unusual attitudes. Twelve commercial airline pilots performed multiple unusual attitude recoveries and both quantitative and qualitative dependent measures were collected. Experimental results and future research directions under this CAST initiative and the NASA "Technologies for Airplane State Awareness" research project are described.

  2. Impact of environmental constraints and aircraft technology on airline fleet composition

    Science.gov (United States)

    Moolchandani, Kushal A.

    This thesis models an airline's decisions about fleet evolution in order to maintain economic and regulatory viability. The aim is to analyze the fleet evolution under different scenarios of environmental policy and technology availability in order to suggest an optimal fleet under each case. An understanding of the effect of aircraft technologies, fleet size and age distribution, and operational procedures on airline performance may improve the quality of policies to achieve environmental goals. Additionally, the effect of decisions about fleet evolution on air travel is assessed as the change in market demand and profits of an abstracted, benevolent monopolist airline. Attention to the environmental impact of aviation has grown, and this has prompted several organizations such as ICAO (and, in response, NASA) to establish emissions reduction targets to reduce aviation's global climate impact. The introduction of new technology, change in operational procedures, etc. are some of the proposed means to achieve these targets. Of these, this thesis studies the efficacy of implementation of environmental policies in form of emissions constraints as a means to achieve these goals and assesses their impact on an airline's fleet evolution and technology use (along with resulting effects on air travel demand). All studies in this thesis are conducted using the Fleet-level Environmental Evaluation Tool (FLEET), a NASA sponsored simulation tool developed at Purdue University. This tool models airline operational decisions via a resource allocation problem and uses a system dynamics type approach to mimic airline economics, their decisions regarding retirement and acquisition of aircraft and evolution of market demand in response to the economic conditions. The development of an aircraft acquisition model for FLEET is a significant contribution of the author. Further, the author conducted a study of various environmental policies using FLEET. Studies introduce constraints on

  3. Technology-Driven and Innovative Training for Sustainable Agriculture in The Face of Climate Change

    Science.gov (United States)

    Wishart, D. N.

    2015-12-01

    Innovative training in 'Sustainable Agriculture' for an increasingly STEM-dependent agricultural sector will require a combination of approaches and technologies for global agricultural production to increase while offsetting climate change. Climate change impacts the water resources of nations as normal global weather patterns are altered during El Nino events. Agricultural curricula must incorporate awareness of 'climate change' in order to find novel ways to (1) assure global food security; (2) improve soil productivity and conservation; (3) improve crop yields and irrigation; (4) inexpensively develop site specific principles of crop management based on variable soil and associated hydrological properties; and (5) improve precision farming. In February 2015, Central State University (CSU), Ohio became an 1890 Land-Grant institution vital to the sustainability of Ohio's agricultural sector. Besides agricultural extension, the agriculture curriculum at CSU integrates multidisciplinary courses in science, technology engineering, agriculture, and mathematics (STEAM). The agriculture program could benefit from a technology-driven, interdisciplinary soil science course that promotes climate change education and climate literacy while being offered in both a blended and collaborative learning environment. The course will focus on the dynamics of microscale to mesoscale processes occurring in farming systems, those of which impact climate change or could be impacted by climate change. Elements of this course will include: climate change webinars; soil-climate interactions; carbon cycling; the balance of carbon fluxes between soil storage and atmosphere; microorganisms and soil carbon storage; paleoclimate and soil forming processes; geophysical techniques used in the characterization of soil horizons; impact of climate change on soil fertility; experiments; and demonstrations.

  4. Economic effects of propulsion system technology on existing and future transport aircraft

    Science.gov (United States)

    Sallee, G. P.

    1974-01-01

    The results of an airline study of the economic effects of propulsion system technology on current and future transport aircraft are presented. This report represents the results of a detailed study of propulsion system operating economics. The study has four major parts: (1) a detailed analysis of current propulsion system maintenance with respect to the material and labor costs encountered versus years in service and the design characteristics of the major elements of the propulsion system of the B707, b727, and B747. (2) an analysis of the economic impact of a future representative 1979 propulsion system is presented with emphasis on depreciation of investment, fuel costs and maintenance costs developed on the basis of the analysis of the historical trends observed. (3) recommendations concerning improved methods of forecasting the maintenance cost of future propulsion systems are presented. A detailed method based on the summation of the projected labor and material repair costs for each major engine module and its installation along with a shorter form suitable for quick, less detailed analysis are presented, and (4) recommendations concerning areas where additional technology is needed to improve the economics of future commercial propulsion systems are presented along with the suggested economic benefits available from such advanced technology efforts.

  5. Aircraft Electric Secondary Power

    Science.gov (United States)

    1983-01-01

    Technologies resulted to aircraft power systems and aircraft in which all secondary power is supplied electrically are discussed. A high-voltage dc power generating system for fighter aircraft, permanent magnet motors and generators for aircraft, lightweight transformers, and the installation of electric generators on turbine engines are among the topics discussed.

  6. Analysis the Impact of Technology Spillovers on Total Factor Productivity of Agricultural Sector in Iran

    Directory of Open Access Journals (Sweden)

    Mostafa Baniasadi

    2016-09-01

    Full Text Available Introduction: The growth of agricultural production and natural resources are from primary objectives of any political system, because this section has a vital role in providing food security. According to the production theories, production growth will come from two sources; more use of production factors within the framework of existing technologies and second, with using more advanced and more efficient production methods and effective use of production factors. In fact, the second one is tied to the concept of productivity. New and efficient technologies are the most important factor for productivity growth. Technology was enhanced through internal and external sources. External sources include spillover technology from developed countries into another country. Empirical evidence on the impact of spillover technology on productivity growth of indigenous producer is vague. One perspective proposes that FDI, technology transferred from developed countries has positive effects on developing countries and another perspective is against it. This paper explores the role of technological spillover on total factor productivity (TFP growth in agricultural sectors of Iran uses time series data during 1971-2011. Materials and Methods: In this study, Kendrick model was used to calculate total factor productivity. After calculating productivity, affective factors on it, were examined through ARDL model. The aim of this study is examination of technology spillover on the productivity of agricultural sectors. The degree of technology diffusion grows with increase in technology distance between the hosts and the foreign countries. The greater the technology distance, the more difficult it becomes for developing countries to boost independent innovation. To calculate the index of technology spillover, commercial partners should be considered that are more advanced in science and technology than Iran. For this purpose, commercial partners in this study are

  7. Suitability Evaluation on the Information Service System of "Agricultural Science and Technology 110" in Sichuan Province, China

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Method of fuzzy comprehensive evaluation is used to carry out suitability evaluation on the information service system of "Agricultural Science and Technology 110" in Sichuan Province, China. Analytic hierarchy process (AHP) and expert consultation method are used to determine the evaluation index system and index weight. Suitability effect of the information service system of "Agricultural Science and Technology 110" is taken as the target layer. The five indices at criterion layer are the organizational mode of agricultural information service, the support system of agricultural information resources, the agricultural information transfer system, the capital source of agricultural information service, and the support system of agricultural information service. And the index layer includes the talent team of agent service, the interaction between the subject and object, the accuracy of agricultural information, the convenience of agricultural information transfer, the adequacy of fund, the efficiency in the use of fund, the status of information infrastructure and so on. Evaluation result shows that the information service system of "Agricultural Science and Technology 110" in Sichuan Province is suitable for the rural economic development at present. The major factors restricting the information service system are the lack of continuity, the weak infrastructure of agricultural information infrastructure, and the relatively low education level of agricultural producers. Therefore, we should further explore and improve the operation mechanism of agricultural information service, expand the capital source of agricultural information service, strengthen the construction of agricultural infrastructure, and ensure the continuous operation of information service system.

  8. New technological methods for protecting underground waters from agricultural pollution

    Science.gov (United States)

    Mavlyanov, Gani

    2015-04-01

    The agricultural production on the irrigated grounds can not carry on without mineral fertilizers, pesticides and herbicides. Especially it is shown in Uzbekistan, in cultivation of cotton. There is an increase in mineralization, rigidity, quantity of heavy metals, phenols and other pollutions in the cotton fields. Thus there is an exhaustion of stocks of fresh underground waters. In the year 2003 we were offered to create the ecological board to prevent pollution to get up to a level of subsoil waters in the top 30 centimeter layer of the ground. We carried out an accumulation and pollution processing. This layer possesses a high adsorbing ability for heavy metals, mineral oil, mineral fertilizers remnants, defoliants and pesticides. In order to remediate a biological pollution treatment processing should be take into account. The idea is consisted in the following. The adsorption properties of coal is all well-known that the Angren coal washing factories in Tashkent area have collected more than 10 million tons of the coal dust to mix with clays. We have picked up association of anaerobic microorganisms which, using for development, destroys nutrients of coal waste pollutions to a harmless content for people. Coal waste inoculation also are scattered by these microorganisms on the field before plowing. Deep (up to 30 cm) plowing brings them on depth from 5 up to 30 cm. Is created by a plough a layer with necessary protective properties. The norm of entering depends on the structure of ground and the intensity of pollutions. Laboratory experiments have shown that 50% of pollutions can be treated by the ecological board and are processed up to safe limit.

  9. High technology in developing countries: Analysis of technology strategy, technology transfer, and success factors in the aircraft industry

    NARCIS (Netherlands)

    Steenhuis, Harm-Jan; Bruijn, de Erik J.

    2004-01-01

    Economical development is highly related to technological development. It is therefore not surprising that many of the industrially developing nations follow explicit strategies to increase their technological competence level. Industrially developing countries may even pursue a strategy of developi

  10. High technology in developing countries: Analysis of technology strategy, technology transfer, and success factors in the aircraft industry

    NARCIS (Netherlands)

    Steenhuis, H.J.; de Bruijn, E.J.

    2004-01-01

    Economical development is highly related to technological development. It is therefore not surprising that many of the industrially developing nations follow explicit strategies to increase their technological competence level. Industrially developing countries may even pursue a strategy of

  11. Diverse Applications of Electronic-Nose Technologies in Agriculture and Forestry

    Directory of Open Access Journals (Sweden)

    Alphus D. Wilson

    2013-02-01

    Full Text Available Electronic-nose (e-nose instruments, derived from numerous types of aroma-sensor technologies, have been developed for a diversity of applications in the broad fields of agriculture and forestry. Recent advances in e-nose technologies within the plant sciences, including improvements in gas-sensor designs, innovations in data analysis and pattern-recognition algorithms, and progress in material science and systems integration methods, have led to significant benefits to both industries. Electronic noses have been used in a variety of commercial agricultural-related industries, including the agricultural sectors of agronomy, biochemical processing, botany, cell culture, plant cultivar selections, environmental monitoring, horticulture, pesticide detection, plant physiology and pathology. Applications in forestry include uses in chemotaxonomy, log tracking, wood and paper processing, forest management, forest health protection, and waste management. These aroma-detection applications have improved plant-based product attributes, quality, uniformity, and consistency in ways that have increased the efficiency and effectiveness of production and manufacturing processes. This paper provides a comprehensive review and summary of a broad range of electronic-nose technologies and applications, developed specifically for the agriculture and forestry industries over the past thirty years, which have offered solutions that have greatly improved worldwide agricultural and agroforestry production systems.

  12. Diverse applications of electronic-nose technologies in agriculture and forestry.

    Science.gov (United States)

    Wilson, Alphus D

    2013-02-08

    Electronic-nose (e-nose) instruments, derived from numerous types of aroma-sensor technologies, have been developed for a diversity of applications in the broad fields of agriculture and forestry. Recent advances in e-nose technologies within the plant sciences, including improvements in gas-sensor designs, innovations in data analysis and pattern-recognition algorithms, and progress in material science and systems integration methods, have led to significant benefits to both industries. Electronic noses have been used in a variety of commercial agricultural-related industries, including the agricultural sectors of agronomy, biochemical processing, botany, cell culture, plant cultivar selections, environmental monitoring, horticulture, pesticide detection, plant physiology and pathology. Applications in forestry include uses in chemotaxonomy, log tracking, wood and paper processing, forest management, forest health protection, and waste management. These aroma-detection applications have improved plant-based product attributes, quality, uniformity, and consistency in ways that have increased the efficiency and effectiveness of production and manufacturing processes. This paper provides a comprehensive review and summary of a broad range of electronic-nose technologies and applications, developed specifically for the agriculture and forestry industries over the past thirty years, which have offered solutions that have greatly improved worldwide agricultural and agroforestry production systems.

  13. Diverse Applications of Electronic-Nose Technologies in Agriculture and Forestry

    Science.gov (United States)

    Wilson, Alphus D.

    2013-01-01

    Electronic-nose (e-nose) instruments, derived from numerous types of aroma-sensor technologies, have been developed for a diversity of applications in the broad fields of agriculture and forestry. Recent advances in e-nose technologies within the plant sciences, including improvements in gas-sensor designs, innovations in data analysis and pattern-recognition algorithms, and progress in material science and systems integration methods, have led to significant benefits to both industries. Electronic noses have been used in a variety of commercial agricultural-related industries, including the agricultural sectors of agronomy, biochemical processing, botany, cell culture, plant cultivar selections, environmental monitoring, horticulture, pesticide detection, plant physiology and pathology. Applications in forestry include uses in chemotaxonomy, log tracking, wood and paper processing, forest management, forest health protection, and waste management. These aroma-detection applications have improved plant-based product attributes, quality, uniformity, and consistency in ways that have increased the efficiency and effectiveness of production and manufacturing processes. This paper provides a comprehensive review and summary of a broad range of electronic-nose technologies and applications, developed specifically for the agriculture and forestry industries over the past thirty years, which have offered solutions that have greatly improved worldwide agricultural and agroforestry production systems. PMID:23396191

  14. NASA-UVa light aerospace alloy and structures technology program supplement: Aluminum-based materials for high speed aircraft

    Science.gov (United States)

    Starke, E. A., Jr. (Editor)

    1995-01-01

    This report on the NASA-UVa light aerospace alloy and structure technology program supplement: Aluminum-Based Materials for High Speed Aircraft covers the period from July 1, 1992. The objective of the research is to develop aluminum alloys and aluminum matrix composites for the airframe which can efficiently perform in the HSCT environment for periods as long as 60,000 hours (certification for 120,000 hours) and, at the same time, meet the cost and weight requirements for an economically viable aircraft. Current industry baselines focus on flight at Mach 2.4. The research covers four major materials systems: (1) Ingot metallurgy 2XXX, 6XXX, and 8XXX alloys, (2) Powder metallurgy 2XXX alloys, (3) Rapidly solidified, dispersion strengthened Al-Fe-X alloys, and (4) Discontinuously reinforced metal matrix composites. There are ten major tasks in the program which also include evaluation and trade-off studies by Boeing and Douglas aircraft companies.

  15. System Analyses of Pneumatic Technology for High Speed Civil Transport Aircraft

    Science.gov (United States)

    Mavris, Dimitri N.; Tai, Jimmy C.; Kirby, Michelle M.; Roth, Bryce A.

    1999-01-01

    The primary aspiration of this study was to objectively assess the feasibility of the application of a low speed pneumatic technology, in particular Circulation Control (CC) to an HSCT concept. Circulation Control has been chosen as an enabling technology to be applied on a generic High Speed Civil Transport (HSCT). This technology has been proven for various subsonic vehicles including flight tests on a Navy A-6 and computational application on a Boeing 737. Yet, CC has not been widely accepted for general commercial fixed-wing use but its potential has been extensively investigated for decades in wind tunnels across the globe for application to rotorcraft. More recently, an experimental investigation was performed at Georgia Tech Research Institute (GTRI) with application to an HSCT-type configuration. The data from those experiments was to be applied to a full-scale vehicle to assess the impact from a system level point of view. Hence, this study attempted to quantitatively assess the impact of this technology to an HSCT. The study objective was achieved in three primary steps: 1) Defining the need for CC technology; 2) Wind tunnel data reduction; 3) Detailed takeoff/landing performance assessment. Defining the need for the CC technology application to an HSCT encompassed a preliminary system level analysis. This was accomplished through the utilization of recent developments in modern aircraft design theory at Aerospace Systems Design Laboratory (ASDL). These developments include the creation of techniques and methods needed for the identification of technical feasibility show stoppers. These techniques and methods allow the designer to rapidly assess a design space and disciplinary metric enhancements to enlarge or improve the design space. The takeoff and landing field lengths were identified as the concept "show-stoppers". Once the need for CC was established, the actual application of data and trends was assessed. This assessment entailed a reduction of the

  16. Drainage filter technologies to mitigate site-specific phosphorus losses in agricultural drainage discharge

    DEFF Research Database (Denmark)

    Kjærgaard, Charlotte; Heckrath, Goswin Johann; Canga, Eriona;

    Losses of phosphorus (P) in drainage waters contribute an estimated 33% to the total agricultural P load in Denmark. Mitigating agricultural P losses is challenging, as critical P losses comprise only a very small fraction of actual soil P contents and are not directly related to fertilizer P input...... in drainage. The Danish “SUPREME-TECH” project (2010-2016) (www.supreme-tech.dk) aims at providing the scientific basis for developing cost-effective filter technologies for P in agricultural drainage waters. The project studies different approaches of implementing filter technologies including drainage well...... the occurrence of surface-induced precipitation processes. The P-retention efficiency of granular drainage filters and constructed wetlands was compared for treating drainage water, and a subcatchment analysis illustrated the potential of implementing such measures....

  17. The Future Role of Instructional Technology in Agricultural Education in North Carolina and Virginia.

    Science.gov (United States)

    Alston, Antoine J.; Miller, W. Wade; Williams, David L.

    2003-01-01

    A stratified random sample of agriculture teachers in North Carolina (n=210) and Virginia (n=170) returned 85 and 110 usable surveys respectively. Teachers were undecided about future uses of instructional technology although they perceived benefits. Accessing Internet lesson plans was a primary use. Hardware/software costs were the principal…

  18. Diffusion and Adoption of Innovations in Fertilizer-Related Agricultural Production Technology in Developing Countries.

    Science.gov (United States)

    Byrnes, Kerry J.

    This monograph reviews a wide range of research literature on the diffusion and adoption of innovations in agricultural production technology in the developing countries, with particular emphasis on the practice of using commercially purchased, inorganic fertilizer as a source of plant nutrients. It is intended that the report's documentation of…

  19. Problems and Solutions of Chinese Agricultural Science and Technology Service System

    Institute of Scientific and Technical Information of China (English)

    Doudou ZHANG; Pengling LIU

    2012-01-01

    Abstract Problems in agricultural science and technology service system were ana- lyzed, such as system problem, investment and worker quality, and based on this countermeasures were proposed, so as to promote the development of modern agri- culture and construction of new countryside.

  20. Recovery of valuable nitrogen compounds from agricultural liquid wastes: potential possibilities, bottlenecks and future technological challenges.

    NARCIS (Netherlands)

    Rulkens, W.H.; Klapwijk, A.; Willers, H.C.

    1998-01-01

    Agricultural liquid livestock wastes are an important potential source of valuable nitrogen-containing compounds such as ammonia and proteins. Large volumetric quantities of these wastes are produced in areas with a high livestock production density. Much technological research has been carried out

  1. New information and communication technologies in agriculture - factors, drivers and application possibilities

    Directory of Open Access Journals (Sweden)

    Róbert Szilágyi

    2012-06-01

    Full Text Available The new ICT technologies are not only fast developed but, in addition, are giving birth to newer systems and tools. The Internet network have become essential communication tools in business processes recently. Using the Internet by means of mobile appliances increases the possibilities. The agriculture has some speciality in information technology. The ICT adoption in the agriculture and main drivers has been examined. For the successful application the key lessons have to understand. To get a draft overview of Hungarian position there is part about it. In this part there are data about household communication devices the individuals ICT usage by age. The region differences in information technologies can be seen also. The final part of the paper there are some technology and application examples. The new devices like tablets and new services like Cloud Computing have great potential in agriculture. Cloud Computing provides better resource management and effective cost control. However, the business assessment of these technologies must not be done only on the basis of the technology and taken out of its environment randomly since the whole area is very complex.

  2. Technological Innovation of Agricultural Products Processing Enterprises from the Perspective of Modern Marketing——A Case of Agricultural Products Processing Enterprises in Hubei Province,China

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    The science and technology development of agricultural products processing enterprises in Hubei Province is analyzed.From the perspective of modern marketing,problems in the research and development work of agricultural products processing enterprises are analyzed from the aspects of market,personal training and technology radiation,which are mainly the lack of close connection with market.Countermeasures for the technological innovation of agricultural products processing enterprises are put forward,such as establishing modern enterprise culture with innovative features,strengthening the market benefits of brand,constructing a comprehensive customer orientation information platform,scientifically predicting and developing the market,doing well in market positioning of enterprise,selecting corresponding technology innovation strategy,taking technological innovation strategy as the basis,realizing the transformation from "4P" marketing combination to "4C",cultivating technical personnel,and realizing the integration of professional skill and marketing ability.

  3. Agricultural pathogen decontamination technology-reducing the threat of infectious agent spread.

    Energy Technology Data Exchange (ETDEWEB)

    Betty, Rita G.; Bieker, Jill Marie; Tucker, Mark David

    2005-10-01

    Outbreaks of infectious agricultural diseases, whether natural occurring or introduced intentionally, could have catastrophic impacts on the U.S. economy. Examples of such agricultural pathogens include foot and mouth disease (FMD), avian influenza (AI), citrus canker, wheat and soy rust, etc. Current approaches to mitigate the spread of agricultural pathogens include quarantine, development of vaccines for animal diseases, and development of pathogen resistant crop strains in the case of plant diseases. None of these approaches is rapid, and none address the potential persistence of the pathogen in the environment, which could lead to further spread of the agent and damage after quarantine is lifted. Pathogen spread in agricultural environments commonly occurs via transfer on agricultural equipment (transportation trailers, tractors, trucks, combines, etc.), having components made from a broad range of materials (galvanized and painted steel, rubber tires, glass and Plexiglas shields, etc), and under conditions of heavy organic load (mud, soil, feces, litter, etc). A key element of stemming the spread of an outbreak is to ensure complete inactivation of the pathogens in the agricultural environment and on the equipment used in those environments. Through the combination of enhanced agricultural pathogen decontamination chemistry and a validated inactivation verification methodology, important technologies for incorporation as components of a robust response capability will be enabled. Because of the potentially devastating economic impact that could result from the spread of infectious agricultural diseases, the proposed capability components will promote critical infrastructure protection and greater border and food supply security. We investigated and developed agricultural pathogen decontamination technologies to reduce the threat of infectious-agent spread, and thus enhance agricultural biosecurity. Specifically, enhanced detergency versions of the patented

  4. An Investigation of Factors Affecting Utilization of Information Technology (IT by Agricultural Students

    Directory of Open Access Journals (Sweden)

    Masoud Rezaei

    2012-03-01

    Full Text Available The present study was carried out with the aim of investigating factors affecting utilization of information technology by students of agriculture. A survey approach was used in this study and a questionnaire was developed to gather the data. The study population was postgraduate students (MS and PhD of economic and agricultural development faculty in Tehran University who were selected by applying random sampling technique. Sample size for students was 61 persons. Data was analyzed by using SPSS/WIN software. The results of the research indicated that there was a positive significant relationship between using of information technology by students and their age, average, prior experience, information technology skills, innovativeness, perceived ease of use, attitude and self-efficacy. The relationship between computer anxiety and using of IT was negative. Stepwise Regression Analysis showed that innovativeness and attitude predict 53.2 percent of variations of IT use by students.

  5. Study on the Factors Influencing the Level of Innovation in Agricultural Science and Technology Projects

    Institute of Scientific and Technical Information of China (English)

    Jing; SUN; Baofeng; CHEN

    2015-01-01

    This paper carries out a questionnaire survey of persons in charge of the agricultural project in the " Eleventh Five-Year National Support Program" on the level of innovation in projects and the factors influencing innovation. After the linear regression analysis of the survey data,it is found that the factors influencing the innovation in agricultural science and technology projects include the level of innovation in scientific achievements,efficiency of research methods and creation of innovation environment. Through the variance analysis of the level of innovation and its influencing factors related to different innovators,it is found that there are differences in the statistical significance of level of innovation in projects among universities,research institutes,research and extension departments directly under the government,and enterprises; there are no significant differences in the understanding of factors influencing innovation,that is,different innovators basically have the same understanding of factors influencing innovation,but the assessment on level of innovation in projects completed is different to some extent.On this basis,this paper proposes the recommendations for further strengthening the level of innovation in agricultural science and technology projects in order to provide a theoretical reference and practical basis for the project managers to effectively improve the level of agricultural science and technology project management,and enhance the level of innovation in projects.

  6. RNAi technologies in agricultural biotechnology: The Toxicology Forum 40th Annual Summer Meeting.

    Science.gov (United States)

    Sherman, James H; Munyikwa, Tichafa; Chan, Stephen Y; Petrick, Jay S; Witwer, Kenneth W; Choudhuri, Supratim

    2015-11-01

    During the 40th Annual Meeting of The Toxicology Forum, the current and potential future science, regulations, and politics of agricultural biotechnology were presented and discussed. The meeting session described herein focused on the technology of RNA interference (RNAi) in agriculture. The general process by which RNAi works, currently registered RNAi-based plant traits, example RNAi-based traits in development, potential use of double stranded RNA (dsRNA) as topically applied pesticide active ingredients, research related to the safety of RNAi, biological barriers to ingested dsRNA, recent regulatory RNAi science reviews, and regulatory considerations related to the use of RNAi in agriculture were discussed. Participants generally agreed that the current regulatory framework is robust and appropriate for evaluating the safety of RNAi employed in agricultural biotechnology and were also supportive of the use of RNAi to develop improved crop traits. However, as with any emerging technology, the potential range of future products, potential future regulatory frameworks, and public acceptance of the technology will continue to evolve. As such, continuing dialogue was encouraged to promote education of consumers and science-based regulations.

  7. Euler Technology Assessment program for preliminary aircraft design employing SPLITFLOW code with Cartesian unstructured grid method

    Science.gov (United States)

    Finley, Dennis B.

    1995-01-01

    This report documents results from the Euler Technology Assessment program. The objective was to evaluate the efficacy of Euler computational fluid dynamics (CFD) codes for use in preliminary aircraft design. Both the accuracy of the predictions and the rapidity of calculations were to be assessed. This portion of the study was conducted by Lockheed Fort Worth Company, using a recently developed in-house Cartesian-grid code called SPLITFLOW. The Cartesian grid technique offers several advantages for this study, including ease of volume grid generation and reduced number of cells compared to other grid schemes. SPLITFLOW also includes grid adaptation of the volume grid during the solution convergence to resolve high-gradient flow regions. This proved beneficial in resolving the large vortical structures in the flow for several configurations examined in the present study. The SPLITFLOW code predictions of the configuration forces and moments are shown to be adequate for preliminary design analysis, including predictions of sideslip effects and the effects of geometry variations at low and high angles of attack. The time required to generate the results from initial surface definition is on the order of several hours, including grid generation, which is compatible with the needs of the design environment.

  8. Technology transfer between aircraft and rotor blade manufacturing; Technologietransfer zwischen Flugzeugbau und Rotorblattbau

    Energy Technology Data Exchange (ETDEWEB)

    Apmann, H. [Premium Aerotec GmbH (Germany)

    2011-02-15

    Aircraft construction and rotor blade production do have some basic things in common. Among these are the material to be processed, the dimensions, as well as the component requirements. Therefore, a possible technology exchange is obvious. Common points like the application of tools and handling units for fibre material, self-tempering systems, tolerance management, component and process development as well as transport assignments, demonstrate the common subjects, but also the differences of both areas. Therefore, both branches can learn from each other and profit from the respective experiences. An example of a successful cross-sectoral cooperation is shown. Curing tools made of steel for the production of rotor blade components have been generated on the basis of the experience and the existent know-how in the production systems area of Premium Aerotec GmbH (a worldwide leading supplier of aircraft structures). The essential advantages of such a steel-curing tool, like the faster heat transfer between heat- and cooling medium and component, higher stability time of the mould, more robust characteristics compared with loads etc. are shown in the production result. By the application of this tool, the production time of the components could be nearly halved. The given tolerances are kept and the process security is raised substantially. Due to the shorter production time the productivity is increased considerably and the growing requirements of the market can be met. Based on the example of this tool, which is used successfully in the serial production for rotor blade components, it's obvious how fast cross-sectoral experiences can lead to a common aim and success. On the basis of this experience further developments in the areas of tools, handling systems and process development are currently carried out. Among others, a new system for tempering of steel moulds, which at the same time will be equipped with a surface coating of the cover sheets, is being

  9. A Systems Engineering Approach to Aircraft Kinetic Kill Countermeasures Technology: Development of an Active Aircraft Defense System for the C/KC-135 Aircraft. Volume 1

    Science.gov (United States)

    1995-12-01

    developed using the software packages MATLAB® and 60 SIMULINK T (MATLAB® With SIMULINK T , 1995). The top level block diagram of ACME is presented in...Patterson AFB OH. Personal interview. 18 April 1995. 7. Burggraf, L. Professor of Chemistry , Air Force Institute of Technology, Wright- Patterson AFB OH

  10. International Pacific Air and Space Technology Conference and Aircraft Symposium, 29th, Gifu, Japan, Oct. 7-11, 1991, Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    1991-01-01

    Various papers on air and space technology are presented. Individual topics addressed include: media selection analysis: implications for training design, high-speed challenge for rotary wing aircraft, high-speed VSTOL answer to congestion, next generation in computational aerodynamics, acrobatic airship 'Acrostat', ducted fan VTOL for working platform, Arianespace launch of Lightsats, small particle acceleration by minirailgun, free-wake analyses of a hovering rotor using panel method, update of the X-29 high-angle-of-attack program, economic approach to accurate wing design, flow field around thick delta wing with rounded leading edge, aerostructural integrated design of forward-swept wing, static characteristics of a two-phase fluid drop system, simplfied-model approach to group combustion of fuel spray, avionics flight systems for the 21st century. Also discussed are: Aircraft Command in Emergency Situations, spectrogram diagnosis of aircraft disasters, shock interaction induced by two hemisphere-cylinders, impact response of composite UHB propeller blades, high-altitude lighter-than-air powered platform, integrated wiring system, auxiliary power units for current and future aircraft, Space Shuttle Orbiter Auxiliary Power Unit status, numerical analysis of RCS jet in hypersonic flights, energy requirements for the space frontier, electrical system options for space exploration, aerospace plane hydrogen scramjet boosting, manual control of vehicles with time-varying dynamics, design of strongly stabilizing controller, development of the Liquid Apogee Propulsion System for ETS-VI.

  11. Communications Technology Assessment for the Unmanned Aircraft System (UAS) Control and Non-Payload Communications (CNPC) Link

    Science.gov (United States)

    Bretmersky, Steven C.; Bishop, William D.; Dailey, Justin E.; Chevalier, Christine T.

    2014-01-01

    The National Aeronautics and Space Administration (NASA) Glenn Research Center (GRC) is performing communications systems research for the Unmanned Aircraft System (UAS) in the National Airspace System (NAS) Project. One of the goals of the communications element is to select and test a communications technology for the UAS Control and Non-Payload Communications (CNPC) link. The GRC UAS Modeling and Simulation (M/S) Sub Team will evaluate the performance of several potential technologies for the CNPC link through detailed software simulations. In parallel, an industry partner will implement a technology in hardware to be used for flight testing. The task necessitated a technical assessment of existing Radio Frequency (RF) communications technologies to identify the best candidate systems for use as the UAS CNPC link. The assessment provides a basis for selecting the technologies for the M/S effort and the hardware radio design. The process developed for the technical assessments for the Future Communications Study1 (FCS) was used as an initial starting point for this assessment. The FCS is a joint Federal Aviation Administration (FAA) and Eurocontrol study on technologies for use as a future aeronautical communications link. The FCS technology assessment process methodology can be applied to the UAS CNPC link; however the findings of the FCS are not directly applicable because of different requirements between a CNPC link and a general aeronautical data link. Additional technologies were added to the potential technologies list from the State of the Art Unmanned Aircraft System Communication Assessment developed by NASA GRC2. This document investigates the state of the art of communications as related to UAS. A portion of the document examines potential communications systems for a UAS communication architecture. Like the FCS, the state of the art assessment surveyed existing communications technologies. It did not, however, perform a detailed assessment of the

  12. Analysis of Impact Factors on Agricultural SMEs′ Technological Innovation Capacity——Case Study of Wenzhou City

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    The paper investigates impact factors of agricultural SMEs′ technological innovation by questionnaire on the survey of more than 100 agricultural SMEs of Wenzhou City of Jiangsu Province. It selects 14 major factors that influence agricultural SMEs′ technological innovation, they are capital source, enterprise culture, support from leaders, government policy support, effect of key research personnel, communication inside organization, enterprise strategy, technological development level, organizing and coordination inside organization, related information acquisition capacity, external cooperation, association and communication with consumers, change of external market and incentive measures to research personnel. Putting these factors in introductionance ordering by scores, we find out comparatively big impact factors influence agricultural SMEs′ technological innovation among them, they are technological development level, incentive measures to research personnel, capital source, government policy support and enterprise strategy. The paper also puts forward corresponding measures and suggestions: further enhance innovation consciousness and improve technological innovation level of agricultural SMEs; increase incentive measures, strengthen construction of talents team of technological innovation; express scientific research strength of local scientific research institutes and agricultural institution of higher learning, realize integration of industries, universities and research; sound government guiding and pushing mechanism, improve new policy environment of agricultural SMEs′ technological innovation.

  13. Community Essay: Seeking a dialogue: a targeted technology for sustainable agricultural systems in the American Corn Belt

    Directory of Open Access Journals (Sweden)

    Laura Christianson

    2011-09-01

    Full Text Available This Community Essay aims to start a dialogue on the role of targeted environmental technologies in “sustainable agriculture.” Using the new water-quality technology of denitrification bioreactors as a specific example, we focus on the question: are edge-of-field technologies such as bioreactors simply band-aid approaches to sustainable agriculture? Or can they be part of a comprehensive paradigm shift? Denitrification bioreactors are a novel approach for reducing the amount of nitrate in on-farm agricultural drainage, a pollutant that has caused water-quality concerns at both local and national scales. We first address whether or not denitrification bioreactors might qualify singularly as a "sustainable technology" within the conceptual continuum of weak to strong sustainability. Then we introduce a broader perspective on the potential role that targeted technologies might play in multifunctional agricultural landscapes. We suggest that denitrification bioreactors are one technology that can, in a small way, mediate a shift in agrarian paradigms. A transition toward sustainability is a long and gradual process requiring the incorporation of a wide range of approaches including targeted technologies and multifunctional landscapes. While the issues presented here are hardly exhaustive, it is our hope that this commentary spurs broader dialogue within the sustainable agriculture community about the role of technology in the future of agriculture. We are seeking to encourage broader philosophical reflection on work being done in the name of a sustainable agriculture.

  14. Design and implementation of a GPS guidance system for agricultural tractors using augmented reality technology.

    Science.gov (United States)

    Santana-Fernández, Javier; Gómez-Gil, Jaime; del-Pozo-San-Cirilo, Laura

    2010-01-01

    Current commercial tractor guidance systems present to the driver information to perform agricultural tasks in the best way. This information generally includes a treated zones map referenced to the tractor's position. Unlike actual guidance systems where the tractor driver must mentally associate treated zone maps and the plot layout, this paper presents a guidance system that using Augmented Reality (AR) technology, allows the tractor driver to see the real plot though eye monitor glasses with the treated zones in a different color. The paper includes a description of the system hardware and software, a real test done with image captures seen by the tractor driver, and a discussion predicting that the historical evolution of guidance systems could involve the use of AR technology in the agricultural guidance and monitoring systems.

  15. Analysis the Impact of Technology Spillovers on Total Factor Productivity of Agricultural Sector in Iran

    OpenAIRE

    Mostafa Baniasadi; Seyed Abd-Almajid Jala’ee Esfandabadi

    2016-01-01

    Introduction: The growth of agricultural production and natural resources are from primary objectives of any political system, because this section has a vital role in providing food security. According to the production theories, production growth will come from two sources; more use of production factors within the framework of existing technologies and second, with using more advanced and more efficient production methods and effective use of production factors. In fact, the second one is ...

  16. Study on the Policies,Science and Technology Support to Impel the Development of Recreational Agriculture in Hainan

    Institute of Scientific and Technical Information of China (English)

    Shuhe; PU; Fuyou; WANG

    2014-01-01

    The current situation of the recreational agriculture development in Hainan was analyzed. The problems of imperfect security system,unsound policies and regulations,scant government support,low enthusiasm for developing recreational agriculture,lacking science and technology support and less special competitive products in Hainan were discussed. Through the reference of foreign countries and Taiwan Area policy support and legislative experience on recreational agriculture,it was recommended to perfect the policy system,develop the leading role of the government,enhance the legislation and supervision,pay attention to science and technology support,in order to promote the healthy sustainable development of recreational agriculture in Hainan.

  17. Technological change in irrigated agriculture in a semiarid region of Spain

    Science.gov (United States)

    Philip, Jean-Marc; Sánchez-Chóliz, Julio; Sarasa, Cristina

    2014-12-01

    Technological change plays a decisive role in irrigated agriculture, which is particularly challenging in semiarid regions. The main objective of this paper is to assess four kinds of alternative technological improvements aimed at dealing with future water availability, especially in the case of extreme events like drought. We evaluate these technologies for a better understanding of what form should be applied in irrigated agriculture in a context of limits on natural resources. We develop a dynamic computable general equilibrium (CGE) model, whose production structure distinguishes between rainfed and irrigated crops, and between a variety of irrigated crops. Land use changes are also evaluated. As well as technological change, we consider the Water Framework Directive (EC 2000/60), which establishes water cost recovery as a key goal. Thus, we assess strategies that combine irrigation water pricing strategies and improved technology. Our results show that policy strategies that focus on fostering technical progress can mitigate the long-term economic effects of downward trends in water supplies, even in drought years. The study also confirms that the absence of price volatility achieved through a water pricing strategy could improve the sustainable use of water.

  18. Technology and Infrastructure Considerations for E-Commerce in Chinese Agriculture

    Institute of Scientific and Technical Information of China (English)

    GENG Shu; REN Tian-zhi; WANG Mao-hua

    2007-01-01

    Information technology (IT) was one of the most intensively studied and extensively applied technologies in the 20th century and its research and application will be even more accelerated in the 21st century. The impact of IT is more farreaching than any one may have had imagined, encompassing all facets and sectors of society. Economically, e-commerce generated more than $1.5 trillion in the US in 2004 and is projected to be 30, 15 and 2.6% of the total manufacturing, whole sales and retail sales in the US in 2006 respectively. IT research in agriculture has so far been particularly applied to such fields as precision farming and bioinformatics and in extension and farming practices. As such, its potential application in agricultural e-commerce has only begun to be explored. The United States Department of Agriculture has identified four different functions that e-commerce firms perform in the agricultural sector. They are: (1) information distribution, (2) input supply, (3) commodity trading floor, and (4) logistics/supply chain management. Unlike other industrial products, agricultural products are much more diverse and difficult to process and handle. For instance, fruits and vegetables are perishable and have to reach the market and the hands of consumers within a short period of time. One of the problems for IT applications in agriculture is the lack of standard measures in characteristics and quality of perishable produce and processing foods. Standards are pre-requisites for effective IT application and e-commerce. According to the Global Commerce Initiative, standards bring scalability, portability and affordability to the business process. Standards speed up the supply chain and reduce errors and protect technology investments and ensure system to system interaction and interoperability. Because the complexity of issues involved in standardization, the process of standardization must involve the input and discussion from all segments of the society. Being

  19. Sustainable technological development in chemistry. Improving the quality of life through chemistry and agriculture

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-08-01

    The importance of agricultural products, their potential conversion to energy sources and their applications for fibre-reinforced construction materials is emphasized. Another potentially important technology is the conversion of sunlight into electricity such as occurs in the leaves of plants. Parallels with nature exist, even though conversions with inorganic materials have, until now, been promising. The ability to control chemical reactions is the subject throughout all the following chapters. The goal is to achieve high reaction efficiencies and to use fewer basic materials, both of which will lead to a reduction in environmental stress. Sustainable developments in chemistry can be described by two approaches: (1) Improvements in society, with challenges for chemistry; and (2) Improvement in the chemical sector itself. Both approaches are dealt with in this report. Five areas for development have been chosen in the discussions for `DTO-Chemie`: Integrated plant conversion (IPC), in particular Valorisation of plant parts for raw materials and energy; Biomass conversion (C1 Chemistry), in particular Technologies for (among others) C1-based chemicals and energy carriers; Photovoltaic cells (PSC), in particular Technologies for the conversion of solar light into electricity; Process Technology in Fine chemistry (PFC), in particular Methodology of manufacturing processes for Fine chemicals; and Sustainable Construction Materials (FRC); in particular Techniques for using fibre-reinforced composites in construction applications. These areas can be viewed as clusters of technologies, with a strong chemistry and agricultural component, which are necessary for achieving a sustainable future. Furthermore, it is important to recognise that technology requires a progressive development (technology lifecycle). The five areas of technology development are tested against a number of criteria: (1) Sustainability / leap / volume; (2) Horizon 2050; (3) Commitment from industry

  20. 飞机单机寿命监控技术评述%Review of Individual Aircraft Life Monitoring Technology

    Institute of Scientific and Technical Information of China (English)

    宋日晓; 姚卫星

    2014-01-01

    单机寿命监控对挖掘每一架飞机的寿命潜力,保证飞机结构的使用安全,延长飞机服役期限具有重要的意义。飞机单机寿命监控从技术方式上分为四种:定期检查和维修,飞参数据监控,危险部位应变监控与飞参数据监控相结合,以智能材料为基础和结构的监控。首先回顾了飞机寿命监控的时间发展历程,并对每个阶段监控方式的优缺点进行了比较,表明随着硬件技术的进步监控方式在不断的进步,精度也越来越高;然后总结了在单机寿命监控发展过程中使用的四种监控技术方式及其优缺点,通过对几种技术方式的分析,认为依赖于智能材料的飞机健康监测系统的监控将是未来单机寿命监控的发展方向。%Individual aircraft life monitoring is of important significance for tapping the potential of each aircraft’s life ,to ensure safe use of the aircraft structure and extend aircraft service period .At present ,individ‐ual aircraft life monitoring can be divided into four categories according to the technology way :regular inspec‐tion and maintenance;monitoring based on flight parameter ;combination of the monitoring based on strain of dangerous parts and the monitoring based on flight parameter ;monitoring based on smart materials and struc‐tures .Firstly the development of aircraft life monitoring is reviewed ,technology advantages and disadvantages of each stage are compared .It shows that with the hardware technology being constantly in progress ,the moni‐toring technology is in progress too ,and the accuracy is increasing .Then the four ways of monitoring technolo‐gy ,its advantages and disadvantages ,used to monitor the development process of individual aircraft life ,are summed up .Through the analysis of several technical methods of aircraft health monitoring system ,it can be concluded that the monitoring method rely on the smart materials will be the

  1. Precision Agriculture. Reaping the Benefits of Technological Growth. Resources in Technology.

    Science.gov (United States)

    Hadley, Joel F.

    1998-01-01

    Technological innovations have revolutionized farming. Using precision farming techniques, farmers get an accurate picture of a field's attributes, such as soil properties, yield rates, and crop characteristics through the use of Differential Global Positioning Satellite hardware. (JOW)

  2. Precision Agriculture. Reaping the Benefits of Technological Growth. Resources in Technology.

    Science.gov (United States)

    Hadley, Joel F.

    1998-01-01

    Technological innovations have revolutionized farming. Using precision farming techniques, farmers get an accurate picture of a field's attributes, such as soil properties, yield rates, and crop characteristics through the use of Differential Global Positioning Satellite hardware. (JOW)

  3. ACCELERATION DEVELOPMENT OF CORN ICM TECHNOLOGY INNOVATION AT SEVERAL AGROECOSYSTEM AGRICULTURE DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    M.P. Sirappa

    2014-02-01

    Full Text Available Technology innovation of corn integrated crop management (ICM is formed of concept with integrated a variety of technology component which synergy interdependent so disperse local problem, increasing eficiency input, take care of and increasingsoil fertility. Agriculture Agency of Research Development agitating for assemble new superior varieties which have a highest production, early ripening, resistent main pest and disease, tolerance of marginal domain, and yield quality which accord with consumer preference. A new superior variety which admissible for agroecosystem rain field are Lamuru, Srikandi Kuning-1, Srikandi Putih-1, Bima-1, dan Semar-10; For dry land wet climate are Bisma, Lamuru, Srikandi Kuning-1, Srikandi Putih-1, Bima-1 and Semar-10; For acid dry land wet climate are Sukmaraga; and for dry land and dry climate are Lamuru, Srikandi Kuning-1 and Srikandi Putih-1. For necessity silage, development directed towards varieties of Bisma, Lamuru, Bima-1, and Semar-10, whereas for food matter are Srikandi Kuning-1 and Srikandi Putih-1. Several strategy for accelerate of corn development, especially varieties which producting by Agriculture Agency of Research Development for farmer are trough survey or PRA, verification and evaluation technology production, field encountered, socialization of technology production, and management of seed measuring.

  4. Multiple-scale Proximal Sensor and Remote Imagery Technology for Sustaining Agricultural Productivity During Climate Change

    Science.gov (United States)

    Corwin, D. L.; Scudiero, E.

    2016-12-01

    Changes in climatic patterns have had dramatic influence on agricultural areas worldwide, particularly in irrigated arid-zone agricultural areas subjected to recurring drought, such as California's San Joaquin Valley. Climate change has impacted water availability, which subsequently has impacted soil salinity levels in the root zone, especially on the west side of the San Joaquin Valley (WSJV). Inventorying and monitoring the extent of climate change on soil salinity is crucial to evaluate the extent of the problem, to recognize trends, and to formulate state-wide and field-scale irrigation management strategies that will sustain the agricultural productivity of the WSJV. Over the past 3 decades, Corwin and colleagues at the U.S. Salinity Laboratory have developed proximal sensor (i.e., electrical resistivity and electromagnetic induction) and remote imagery (i.e., MODIS and Landsat 7) methodologies for assessing soil salinity at multiple scales: field (0.5 ha to 3 km2), landscape (3 to 10 km2), and regional (10 to 105 km2) scales. The purpose of this presentation is to provide an overview of these scale-dependent salinity assessment technologies. Case studies for the WSJV are presented to demonstrate at multiple scales the utility of these approaches in assessing soil salinity changes due to management-induced changes and to changes in climate patterns, and in providing site-specific irrigation management information for salinity control. Land resource managers, producers, agriculture consultants, extension specialists, and Natural Resource Conservation Service field staff are the beneficiaries of this information.

  5. 精准农业技术概述%Overview of Precision Agriculture Technology

    Institute of Scientific and Technical Information of China (English)

    王福义

    2012-01-01

    在农产品国际市场竞争日趋激烈的时代,只有采用更先进的技术手段,才能适应不断变化的外部环境。为高效利用各类农业资源和改善环境.简述精准农业的定义及其技术流程,详细介绍精准农业的主要内容及其支持技术,为该项技术的广泛应用提供有益的参考。%This article explains the definition of precision agriculture and its technical flow and expounds on the major contents of precision agriculture and its supportive technology for the aim of making full use of various agricultural resources and improving environment and providing reference for the application of this technology.

  6. National Forestry Research Plan and Strategic Plan of the Agricultural Science and Technology Program (Colciencias

    Directory of Open Access Journals (Sweden)

    Mónica María Baquero Parra

    2011-06-01

    Full Text Available This paper aims to share the national research priorities in agriculture and forestry areas with the scientific community, based on the lines of research identified by the Agricultural Science and Technology Program for the 2010-2019 Strategic Plans by Colciencias. The Strategic Agriculture Plan has determined that the research priorities are Colombia to manage the supply chain, nutrition, rural poverty, quality and innocuousness, as well as the slow production transformation: cost of opportunity and insufficient, decontextualized research. Each of the aforementioned problems is briefly described in the document. As far as the National Plan of Forestry Research is concerned, the following three main topics were suggested: to strengthen a national genetic improvement of tree species that contribute to productivity and the increase of environmental services; to identify and characterize areas, species and potential products for reforestation programs; and to identify species, arrangements and densities that optimize the goods that may be obtained from a forest plantation and its environmental services for the top priority social and agro-ecological conditions of the country. The information regarding the two National Strategic Plans is expected to be disclosed during the first semester of 2011, so that the Administrative Department of Science, Technology and Innovation (Colciencias can support the research projects that meet the expectations of the identified priorities.

  7. Tailoring conservation agriculture technologies to West Africa semi-arid zones: Building on traditional local practices for soil restoration

    NARCIS (Netherlands)

    Lahmar, R.; Bationo, B.A.; Lamso, N.D.; Guéro, Y.; Tittonell, P.A.

    2012-01-01

    Low inherent fertility of tropical soils and degradation, nutrient deficiency and water stress are the key factors that hamper rainfed agriculture in semi-arid West Africa. Conservation Agriculture (CA) is currently promoted in the region as a technology to reduce soil degradation, mitigate the effe

  8. Ergonomics Perspective in Agricultural Research: A User-Centred Approach Using CAD and Digital Human Modeling (DHM) Technologies

    Science.gov (United States)

    Patel, Thaneswer; Sanjog, J.; Karmakar, Sougata

    2016-06-01

    Computer-aided Design (CAD) and Digital Human Modeling (DHM) (specialized CAD software for virtual human representation) technologies endow unique opportunities to incorporate human factors pro-actively in design development. Challenges of enhancing agricultural productivity through improvement of agricultural tools/machineries and better human-machine compatibility can be ensured by adoption of these modern technologies. Objectives of present work are to provide the detailed scenario of CAD and DHM applications in agricultural sector; and finding out means for wide adoption of these technologies for design and development of cost-effective, user-friendly, efficient and safe agricultural tools/equipment and operator's workplace. Extensive literature review has been conducted for systematic segregation and representation of available information towards drawing inferences. Although applications of various CAD software have momentum in agricultural research particularly for design and manufacturing of agricultural equipment/machinery, use of DHM is still at its infancy in this sector. Current review discusses about reasons of less adoption of these technologies in agricultural sector and steps to be taken for their wide adoption. It also suggests possible future research directions to come up with better ergonomic design strategies for improvement of agricultural equipment/machines and workstations through application of CAD and DHM.

  9. Tailoring conservation agriculture technologies to West Africa semi-arid zones: Building on traditional local practices for soil restoration

    NARCIS (Netherlands)

    Lahmar, R.; Bationo, B.A.; Lamso, N.D.; Guéro, Y.; Tittonell, P.A.

    2012-01-01

    Low inherent fertility of tropical soils and degradation, nutrient deficiency and water stress are the key factors that hamper rainfed agriculture in semi-arid West Africa. Conservation Agriculture (CA) is currently promoted in the region as a technology to reduce soil degradation, mitigate the effe

  10. Ergonomics Perspective in Agricultural Research: A User-Centred Approach Using CAD and Digital Human Modeling (DHM) Technologies

    Science.gov (United States)

    Patel, Thaneswer; Sanjog, J.; Karmakar, Sougata

    2016-09-01

    Computer-aided Design (CAD) and Digital Human Modeling (DHM) (specialized CAD software for virtual human representation) technologies endow unique opportunities to incorporate human factors pro-actively in design development. Challenges of enhancing agricultural productivity through improvement of agricultural tools/machineries and better human-machine compatibility can be ensured by adoption of these modern technologies. Objectives of present work are to provide the detailed scenario of CAD and DHM applications in agricultural sector; and finding out means for wide adoption of these technologies for design and development of cost-effective, user-friendly, efficient and safe agricultural tools/equipment and operator's workplace. Extensive literature review has been conducted for systematic segregation and representation of available information towards drawing inferences. Although applications of various CAD software have momentum in agricultural research particularly for design and manufacturing of agricultural equipment/machinery, use of DHM is still at its infancy in this sector. Current review discusses about reasons of less adoption of these technologies in agricultural sector and steps to be taken for their wide adoption. It also suggests possible future research directions to come up with better ergonomic design strategies for improvement of agricultural equipment/machines and workstations through application of CAD and DHM.

  11. Applications and case studies of the next-generation sequencing technologies in food, nutrition and agriculture.

    Science.gov (United States)

    Liu, George E

    2009-01-01

    The next-generation sequencing technologies are able to produce millions of short sequence reads in a high-throughput, cost-effective fashion. The emergence of these technologies has not only facilitated genome sequencing but also started to change the landscape of life sciences. Here, I survey their major applications ranging from whole-genome sequencing and resequencing, single nucleotide polymorphism (SNP) and structural variation discovery, to mRNA and noncoding RNA profiling and protein-nucleic acid interaction assay. These case studies in structural, functional and comparative genomics, metagenomics, and epigenomics are providing a more complete picture of the genome structures and functions. In the near future, we will witness broad impacts of these next-generation sequencing technologies for solving the complex biological problems in food, nutrition and agriculture. In this article, recent patents based information is also included.

  12. A reappraisal of transport aircraft needs 1985 - 2000: Perceptions of airline management in a changing economic, regulatory, and technological environment

    Science.gov (United States)

    Spencer, F. A.

    1982-01-01

    Views of the executives of 24 major, national, regional, and commuter airlines concerning the effect of recent regulatory, economic, and technological changes on the roles they see for their airlines, and consequent changes in their plans for acquiring aircraft for the 1985 to 2000 period were surveyed. Differing perceptions on the economic justification for new-technology jets in the context of the carriers' present and projected financial conditions are outlined. After examining the cases for new or intermediate size jets, the study discusses turboprop powered transports, including the carriers' potential interest in an advanced technology, high-speed turboprop or prop-fan. Finally, the implications of foreign competition are examined in terms of each carrier's evaluation of the quality and financial offerings, as well as possible 'Buy American' policy predisposition.

  13. TECHNOLOGY FOR THE PREPARATION OF LIVESTOCK WASTEWATER FOR IRRIGATION OF AGRICULTURAL CROPS

    Directory of Open Access Journals (Sweden)

    Domashenko Y. E.

    2015-02-01

    Full Text Available In the article the authors propose various techniques for the preparation of livestock waste for agricultural use, particularly for irrigation. We have considered resource-saving environmentally safe technology for processing livestock waste pig farms based on the use of the reagent preparation phosphogypsum – residuals of phosphoric acid and fertilizers. The technology was tested and endorsed at the operating company LLC "Aksai field" of the Rostov region. Also based on this technology, we have offered the following technical solution: livestock wastewater is exposed to the vortex field with movable ferromagnetic particles, which contributes to more complete disinfecting effect. Further improvement of the technological scheme of training for livestock waste allowed to get more modern technical solution, including sewage treatment acidifying reagent is a suspension of phosphogypsum and slightly basic by oxychloride brand Aqua-Aurat. With the aim of reducing the cost and simplifying the technology of training we offered using a reagent, obtained from natural raw materials - silica-coagulant on the basis of nepheline instead of the low-base oxychloride brand Aqua-AuraTM. Aluminosilicate coagulant on the basis of nepheline may be used at high values of COD up to 2000 mg O/l and TBOD to 1500 mg O/l, which is a limitation for the use of such coagulants in the preparation of livestock wastewater pig farms. All the proposed technologies are based on the positions of resource and energy efficiency and environmental safety

  14. U.S. aerospace industry opinion of the effect of computer-aided prediction-design technology on future wind-tunnel test requirements for aircraft development programs

    Science.gov (United States)

    Treon, S. L.

    1979-01-01

    A survey of the U.S. aerospace industry in late 1977 suggests that there will be an increasing use of computer-aided prediction-design technology (CPD Tech) in the aircraft development process but that, overall, only a modest reduction in wind-tunnel test requirements from the current level is expected in the period through 1995. Opinions were received from key spokesmen in 23 of the 26 solicited major companies or corporate divisions involved in the design and manufacture of nonrotary wing aircraft. Development programs for nine types of aircraft related to test phases and wind-tunnel size and speed range were considered.

  15. Importance of Program Development Competencies for Agricultural Extension Agents' Performance in Process of Technology Transfer

    Directory of Open Access Journals (Sweden)

    Neda Tiraieyari

    2010-01-01

    Full Text Available Problem statement: The movement of technology from lab to the field has been a challenge for agricultural extension agents. In this study researchers focused on program development competencies for agricultural extension agents in process of technology transfer and discuss the importance of these competencies by determining the relationship between these competencies and performance of extension agents. Approach: The study employed stratified random sampling technique. The sample consisted of 210 extension agents in four states of Malaysia. The data were analyzed using descriptive statistics, Pearson correlation and multiple regression analysis. Results: Extension agents perceived themselves competent in developing program planning, program implementation and program evaluation. The findings supported the positive relationship between competencies and extension agents’ performance. Therefore hypothesis of the study was supported. The results of multiple regressions showed program development competencies explained 0.448 of variance of extension agents’ performance. Conclusion/Recommendations: It can be concluded that performance of extension agents is expected to increase if they have program development competencies. Results supported the importance of these competencies for performance of extension agents in process of technology transfer. Hence to keep extension agents competent and to further improve their performance, these competencies must be considered and upgraded. Continuous assessment of extension agents’ competencies and performance is recommended.

  16. Aviation Maintenance Technology. Airframe. A203. Aircraft Fabric Covering, Painting, and Finishing. Instructor Material.

    Science.gov (United States)

    Oklahoma State Board of Vocational and Technical Education, Stillwater. Curriculum and Instructional Materials Center.

    This teacher's guide is designed to aid teachers in leading students through a module on airframe building and repair, including fabric covering, painting, and finishing. The module contains two units that cover the following topics: (1) inspecting, testing, and installing aircraft fabric coverings and (2) applying dope, paint, and trim. Each unit…

  17. Perceptions of Paddy Farmers towards Sustainable Agricultural Technologies: Case of Haraz Catchments Area in Mazandaran province of Iran

    Directory of Open Access Journals (Sweden)

    A. Bagheri

    2008-01-01

    Full Text Available Sustainable agriculture has defined and described in many ways. Despite the diversity in conceptualizing sustainable agriculture, there is a consensus on three basic dimensions of the concept, namely, ecological soundness economically viable and socially acceptable. The dimensions of ecological soundness refers to the preservation and improvement of the natural environment. Environmental issues emerge from the human use of natural resources. Farmers' decisions to adopt a new agricultural technology depend on complex factors. One of the factors is farmers' perception. The objective of this study was to investigate perceptions of paddy farmers towards applying sustainable agricultural technologies and to identify factors influencing their perceptions. The results of the study show that farmers had good perception about sustainable technologies such as diversification and rotation, application of manure but in general, they preferred modern technologies to local ones. They perceived agrochemicals as the best means to combat against pests and to increase rice production. Their perception of intangible impacts of modern technologies was weak. It was found that there should be a relationship between a numbers of socio-economic factors, such as human capital factors, information sources use, extension participation and landholding size and the perception towards selected sustainable agricultural technologies. Also, educational level, contact with agricultural experts and extension participation were best predictors of their perceptions.

  18. Approach Choice and Innovative Model Design of Grass-root Agricultural Technology Promotion under the View of New Countryside

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    This paper introduces the approach types of agricultural technology promotion we can choose in the process of new countryside construction, and there are mainly 6 types, namely government-domination-oriented approach, market-development-oriented approach, university (scientific research institution)-education-oriented approach, farmers’ participation-oriented approach, direct-training-oriented approach and individual-service-oriented approach, including 20 models. The problems existing in the grass-root agricultural technology promotion in the process of new village construction are analyzed as follows: the awareness of innovation is not strong; scientific research, education, and promotion are disjointed; the construction of specific work system lags behind; the structure of promotion team is irrational, and the quality of promotion personnel is yet to be promoted; the cultural quality of farmers is low, and the cooperative organizations are not sound; the working conditions are poor, and the basic security is inadequate; the investment channel is simple and the supply amount is badly short; the methods of agricultural technology promotion do not adapt to the requirements of new situation. According to the characteristics and internal requirements of grass-root agricultural technology promotion, we creatively design an overall working model, and put forward new measures from objective of grass-root agricultural technology promotion, service object, service content, organization work and scope, method, role of agricultural technology personnel and so on.

  19. Putting agricultural equipment and digital technologies at the cutting edge of agroecology

    Directory of Open Access Journals (Sweden)

    Bellon Maurel Véronique

    2017-05-01

    Full Text Available The agro-ecological transition is an ambitious challenge. It can be met by implementing the fundamentals of agroecology (use of biodiversity, integration of agriculture in landscapes, closure of flow loops in the context of a broad and renewed offer of technologies: agro-equipment, biotechnology, digital technologies… This article explores the role that agro-equipment and digital services can play in this transition. These technologies contribute through various levers to the agro-ecological transition: by improving farming efficiency (more service rendered for the same environmental impact, by precision farming (adaptation of the operations to the needs of the plant or the animal based on a monitoring–diagnosis–recommendation cycle and by the development of specialized machinery helping the farmer to achieve “flow loop-closing” (at the plot level, by maintaining the soil quality, or at the farm level, with the recycling of organic effluents or to take advantage of biodiversity (e.g., with agro-equipment adapted to mixed crops. The technological bricks that are requested and for which advances are expected are: sensors (to measure plant or animal needs and associated digital technologies (information transfer, data processing, precision technologies for input application, robotics, specialized machines to manage soil cover and weeds, or for agroforestry. The brakes and engines for innovation in agro-equipment are studied. The brakes are the generally small structure of the farm manufacturing companies, the deficit of the demand from farmers and the complexity − either real or perceived − of these equipments. To encourage innovation, several levers are to be used: involving users in the design of agro-equipments, creating financial incentives for innovative equipment purchase, and training end-users, prescribers and dealers to the high potential of these new technologies. In conclusion, putting agro-equipment and digital technology

  20. Nanotechnology and patents in agriculture, food technology, nutrition and medicine - advantages and risks: worldwide patented nano- and absorber particles in food nutrition and agriculture.

    Science.gov (United States)

    Benckiser, Gero

    2012-12-01

    The keywords nanotechnology, super absorber, agriculture, nutrition, and food technology exhibited 28,149 positive matches under more than 68 million patents worldwide. A closer look at the first 500 nanotechnology, agriculture, nutrition and biotechnology related patents, published during 2011-2012, unveiled that 64% are parts of machines and control devices while about 36% comprise metal oxides, fertilizers, pesticides and drugs, which are compounds and often applied in combination with inorganic or organic super absorbing polymeric structures. The latter compounds are in the focus of this special issue.

  1. 电动飞机技术进展%Advances in Electric Aircraft Technology

    Institute of Scientific and Technical Information of China (English)

    赵长辉; 陈立玮; 卢黎波; 张勤满; 孙璐

    2012-01-01

    电动飞机是一种环保、节能、高效的新型航空器.为支持电动飞机发展,需要系统总结和分析电动飞机的设计方法和设计技术.首先,简要介绍了电动飞机的发展概况和技术进展,通过统计数据展示各类电动飞机性能提高的情况并说明其性能不足的方面.重点归纳和分析各类电动飞机的总体设计方法,包括太阳能、蓄电池(锂电池)、燃料电池及常规动力飞机平台改装的电动飞机,以及设计工具和设计支持系统.最后分析电动飞机的设计技术,包括气动力和总体布局、电动力系统、结构和材料等方面.%Electric aircraft is a new type of aircraft, with extraordinary advantages of environment friendly, high efficiency, energy saving etc., which may have important impact on the future development of aviation, and a good prospect. Design methodology and techniques of electric aircraft are outlined in this paper. A brief introduction of the electric aircraft development since the 1970's is given firstly, followed by an analysis of its performance through related data, and its shortcomings. Then the conceptual design methodology of different types of electric aircraft (solar powered, battery powered, fuel cell powered, retrofitted) is summarized and analyzed in detail, together with related design tools and support systems. Specific techniques of electric aircraft design, including the aerodymanic configuration and the general layout, the electric propulsion system, the structure and the materials, are discussed finally.

  2. Systematic mapping study of information communication technology research for agriculture (in case of developing Countries)

    DEFF Research Database (Denmark)

    Zewge, Amanuel; Dittrich, Yvonne

    2015-01-01

    Context: A rural community in a developing country is a socially complex and infrastructural weak environment that demands clear understanding of the social, economical, cultural, and political precondition before implementing information commutation technology (ICT) innovations. Objective: This ...... for an ongoing discourse to fill identified gaps from software engineering, computer science or information system research perspective. Keywords: design method, information system, development, agriculture....... with number of contributions but still there is long ways to go. The review shows that currently there are limited knowledge areas in methods, user interface design, and theory in how to design information system for rural community settings. Conclusion: This paper first presents an overview of research......Context: A rural community in a developing country is a socially complex and infrastructural weak environment that demands clear understanding of the social, economical, cultural, and political precondition before implementing information commutation technology (ICT) innovations. Objective...

  3. Application of pilot technologies for energy utilization of agricultural residues in Northern Greece

    Directory of Open Access Journals (Sweden)

    Zabaniotou Anastasia A.

    2007-01-01

    Full Text Available The enormous potential of agro biomass can be exploited to produce sustainable bioenergy. Proper management and further exploitation of this potential could lead to economically profitable approximations and solutions for the agricultural industry and even energy production industry. Gasification in-situ with energy production or pyrolysis of the above mentioned residues, under a non-oxidizing atmosphere for alternative fuels production could be a solution to the environmental problems that land filling or conventional combustion could create. The present work focuses on combustion and pyrolysis of cotton gin residues in Greece, as an alternative way of energy production. The purpose of presentation of a case study of the two alternatives methods (combustion and gasification or pyrolysis, by using cotton ginning waste as biofuel, is to show the appropriateness of new bioenergy sources by coupling them with energy production technologies. These technologies can be applied in northern Greece as well as in other Balkan or Mediterranean countries. .

  4. Survey of Fire Detection Technologies and System Evaluation/Certification Methodologies and Their Suitability for Aircraft Cargo Compartments

    Science.gov (United States)

    Cleary, T.; Grosshandler, W.

    1999-01-01

    As part of the National Aeronautics and Space Administration (NASA) initiated program on global civil aviation, NIST is assisting Federal Aviation Administration in its research to improve fire detection in aircraft cargo compartments. Aircraft cargo compartment detection certification methods have been reviewed. The Fire Emulator-Detector Evaluator (FE/DE) has been designed to evaluate fire detection technologies such as new sensors, multi-element detectors, and detectors that employ complex algorithms. The FE/DE is a flow tunnel that can reproduce velocity, temperature, smoke, and Combustion gas levels to which a detector might be exposed during a fire. A scientific literature survey and patent search have been conducted relating to existing and emerging fire detection technologies, and the potential use of new fire detection strategies in cargo compartment areas has been assessed. In the near term, improved detector signal processing and multi-sensor detectors based on combinations of smoke measurements, combustion gases and temperature are envisioned as significantly impacting detector system performance.

  5. An intellectual property sharing initiative in agricultural biotechnology: development of broadly accessible technologies for plant transformation.

    Science.gov (United States)

    Chi-Ham, Cecilia L; Boettiger, Sara; Figueroa-Balderas, Rosa; Bird, Sara; Geoola, Josef N; Zamora, Pablo; Alandete-Saez, Monica; Bennett, Alan B

    2012-06-01

    The Public Intellectual Property Resource for Agriculture (PIPRA) was founded in 2004 by the Rockefeller Foundation in response to concerns that public investments in agricultural biotechnology benefiting developing countries were facing delays, high transaction costs and lack of access to important technologies due to intellectual property right (IPR) issues. From its inception, PIPRA has worked broadly to support a wide range of research in the public sector, in specialty and minor acreage crops as well as crops important to food security in developing countries. In this paper, we review PIPRA's work, discussing the failures, successes, and lessons learned during its years of operation. To address public sector's limited freedom-to-operate, or legal access to third-party rights, in the area of plant transformation, we describe PIPRA's patent 'pool' approach to develop open-access technologies for plant transformation which consolidate patent and tangible property rights in marker-free vector systems. The plant transformation system has been licensed and deployed for both commercial and humanitarian applications in the United States (US) and Africa, respectively.

  6. Science, technique, technology: passages between matter and knowledge in imperial Chinese agriculture.

    Science.gov (United States)

    Bray, Francesca

    2008-09-01

    Many historians today prefer to speak of knowledge and practice rather than science and technology. Here I argue for the value of reinstating the terms science, techniques and technology as tools for a more precise analysis of governmentality and the workings of power. My tactic is to use these three categories and their articulations to highlight flows between matter and ideas in the production and reproduction of knowledge. In any society, agriculture offers a wonderfully rich case of how ideas, material goods and social relations interweave. In China agronomy was a science of state, the basis of legitimate rule. I compare different genres of agronomic treatise to highlight what officials, landowners and peasants respectively contributed to, and expected from, this charged natural knowledge. I ask how new forms of textual and graphic inscription for encoding agronomic knowledge facilitated its dissemination and ask how successful this knowledge proved when rematerialized and tested as concrete artefacts or techniques. I highlight forms of innovation in response to crisis, and outline the overlapping interpretative frameworks within which the material applications of Chinese agricultural science confirmed and extended its truth across space and time.

  7. Modeling Intention to Use Information Technology (IT Among Agricultural Teachers in Agricultural Vocational Schools in Kurdistan Province

    Directory of Open Access Journals (Sweden)

    Adel Sulaimany

    2012-03-01

    Full Text Available : The purpose of this descriptive – co-relational study was to determine factors influencing intention to use IT among agricultural vocational teachers using Theory of Planned Behavior (TPB in Kurdistan province. Data was collected using researcher-made questionnaire. The validity was confirmed using a panel of experts and reliability was assessed using Cronbach's alpha yielding 0.7 for all sections. The population consisted of agricultural vocational teachers in Kurdistan province (N =71. All teachers participated in the study. Regression analysis revealed that self-efficacy, subjective norms, and attitude towards using IT explained 58% variance in intention to use IT. The result of this study has implications for agricultural vocational system in Kurdistan province in that attitude, subjective norm, and self-efficacy should be further enhanced if teachers are to continue using IT in their educational activities.

  8. China’s Approach to Technology Acquisition: Part 1. The Aircraft Industry

    Science.gov (United States)

    1975-02-01

    Manchuria , the Japanese had established an air- craft engineering industry there, the Manchu Airplane Manufacturing Company, with plants in Shenyang...Kungchuling, and Harbin . The facili- ties were modern, employed a work force of close to 10,000; and pro- duced combat aircraft and engines for the...Japanese Army. At the end of World War II when Soviet forces overran the Japanese in Manchuria , the Russians systematically stripped these plants of

  9. Follow on Research for Multi-Utility Technology Test Bed Aircraft at NASA Dryden Flight Research Center (FY13 Progress Report)

    Science.gov (United States)

    Pak, Chan-Gi

    2013-01-01

    Modern aircraft employ a significant fraction of their weight in composite materials to reduce weight and improve performance. Aircraft aeroservoelastic models are typically characterized by significant levels of model parameter uncertainty due to the composite manufacturing process. Small modeling errors in the finite element model will eventually induce errors in the structural flexibility and mass, thus propagating into unpredictable errors in the unsteady aerodynamics and the control law design. One of the primary objectives of Multi Utility Technology Test-bed (MUTT) aircraft is the flight demonstration of active flutter suppression, and therefore in this study, the identification of the primary and secondary modes for the structural model tuning based on the flutter analysis of MUTT aircraft. The ground vibration test-validated structural dynamic finite element model of the MUTT aircraft is created in this study. The structural dynamic finite element model of MUTT aircraft is improved using the in-house Multi-disciplinary Design, Analysis, and Optimization tool. In this study, two different weight configurations of MUTT aircraft have been improved simultaneously in a single model tuning procedure.

  10. Energy technology impacts on agriculture with a bibliography of models for impact assessment on crop ecosystems

    Energy Technology Data Exchange (ETDEWEB)

    Rupp, E.M.; Luxmoore, R.J.; Parzyck, D.C.

    1979-09-01

    Possible impacts of energy technologies on agriculture are evaluated, and some of the available simulation models that can be used for predictive purposes are identified. An overview of energy technologies and impacts on the environment is presented to provide a framework for the commentary on the models. Coal combustion is shown to have major impacts on the environment and these will continue into the next century according to current Department of Energy projections. Air pollution effects will thus remain as the major impacts on crop ecosystems. Two hundred reports were evaluated, representing a wide range of models increasing in complexity from mathematical functions (fitted to data) through parametric models (which represent phenomena without describing the mechanisms) to mechanistic models (based on physical, chemical, and physiological principles). Many models were viewed as suitable for adaptation to technology assessment through the incorporation of representative dose-response relationships. It is clear that in many cases available models cannot be taken and directly applied in technology assessment. Very few models of air pollutant-crop interactions were identified, even though there is a considerable data base of pollutant effects on crops.

  11. FACTORS INFLUENCING A NEW INFORMATION AND COMMUNICATION TECHNOLOGY ADOPTION IN MALAYSIA’S AGRICULTURE COMMUNITY: APPLYING THE SUSTAINABLE LIVELIHOODS APPROACH

    OpenAIRE

    Wei, Lee Heng; Osman, Mohd Azam; Idrus, Rosnah; Sabudin, Maziani; Shiang-Yen, Tan

    2012-01-01

    ICT intervention in agriculture sector is creating new challenges and opportunities for promoting sustainable farming in Malaysia. This study draws on a research program which is driven by a top research university in Malaysia collaboration with a local agriculture agency in developing a Mobile Community for Farmers. The Mobile Community is a web-based application that deploys Short Messaging Service (SMS)-based technology to assist the farming community in improving their management of farm...

  12. On the use of agricultural system models for exploring technological innovations across scales in Africa: A critical review

    OpenAIRE

    Rötter, Reimund P.; Sehomi, Fanou L.; Höhn, Jukka G.; Niemi, Jarkko K.; Van Den Berg, Marrit

    2016-01-01

    The major challenge of the 21st century is to achieve food security under, roughly, a doubling in food demand by 2050 compared to present, and producing the additional food under marked shifts in climatic risks and with environmentally sound farming practices. Sustainable intensification of agricultural production is required that meets the dual goal of improved environmental sustainability and economic efficiency. Ex ante evaluation of technological innovations to support agricultural produc...

  13. Prospects of Russian Agriculture development under global climate and technological changes

    Science.gov (United States)

    Valentini, Riccardo; Vasenev, Ivan

    2015-04-01

    Despite the great progresses of the last century in the agricultural sector and food supply, still about 820 million of people in developing countries are facing food scarcity and malnutrition. More than 180 million children are underweight. Except in Africa, 80 percent of the production gains came from increased yields in major cereal crops. The area cultivated has actually begun to decline in some regions. From now on, however, even Africa, which has always relied on cultivation of new land for production increases, will have to count on yield gains or pay high financial and ecological costs for expansion into areas not yet cultivated. The global scenario is changing fast. The technological, climatic and human-induced factors are creating long-lasting effects on the lives of people and on economic activities around the globe. In particular, climate change and/or variability is exacerbating rural increasing heat stress to natural habitats and human settlements, increasing climatic extremes, including drought and impacting food production. Agriculture of any kind is strongly influenced by the availability of water. Climate change will modify rainfall, evaporation, runoff, and soil moisture storage. Changes in total seasonal precipitation or in its pattern of variability are both important. The occurrence of moisture stress during flowering, pollination, and grain-filling is harmful to most crops and particularly so to corn, soybeans, and wheat. Increased evaporation from the soil and accelerated transpiration in the plants themselves will cause moisture stress; as a result there will be a need to develop crop varieties with greater drought tolerance. These climate change effects are particularly harmful in tropical regions of South America, Africa and South East Asia where food production is feeding a large part of world countries and poses serious risks to global food security in the future. Despite global projected climate change will affect a general decline of

  14. PREDICTING E-LEARNING APPLICATION IN AGRICULTURAL HIGHER EDUCATION USING TECHNOLOGY ACCEPTANCE MODEL

    Directory of Open Access Journals (Sweden)

    Masoud REZAEI

    2008-01-01

    Full Text Available E-learning is significant breakthrough in teaching and learning. Internet or web technologies are important because they facilitate and enhance communications among instructors and learners and provide tools to encourage creativity and initiative. If internet-based learning environments are to benefit students, then it is important from the student’s perspective that they are not seen as overly complex and hard to use. The introduction of e-learning may hinder the learning process if the technology is perceived as being complex and not useful to enhanced performance, and thus a distraction to learning. In line with acceptance studies, this research proposed and tested students’ acceptance behavior of agricultural higher education for application of e-learning using technology acceptance model. Results demonstrated that there was positive relationship between students’ intention to use e-learning and its perceived usefulness, internet experience, computer self-efficacy and affect. Instead computer anxiety and age had negative relationship with students’ intention to use e-learning.

  15. Embracing the emerging precision agriculture technologies for site-specific management of yield-limiting factors.

    Science.gov (United States)

    Melakeberhan, H

    2002-09-01

    Precision agriculture (PA) is providing an information revolution using Global Positioning (GPS) and Geographic Information (GIS) systems and Remote Sensing (RS). These technologies allow better decision making in the management of crop yield-limiting biotic and abiotic factors and their interactions on a site-specific (SSM) basis in a wide range of production systems. Characterizing the nature of the problem(s) and public education are among the challenges that scientists, producers, and industry face when adapting PA technologies. To apply SSM, spatio-temporal characteristics of the problem(s) need to be determined and variations within a field demonstrated. Spatio-temporal characteristics of a given pathogen or pest problem may be known but may not be the only or primary cause of the problem. Hence, exact cause-and-effect relationships need to be established by incorporating GIS, GPS, and RS-generated data as well as possible interactions. Exploiting the potential of PA technologies in sustainable ways depends on whether or not we first ask ''Are we doing the right thing?'' (strategic) as opposed to ''Are we doing it right?'' (tactical).

  16. Applying an Enhanced Technology Acceptance Model to Knowledge Management in Agricultural Extension Services

    Directory of Open Access Journals (Sweden)

    Olusegun Folorunso

    2008-04-01

    Full Text Available This research investigates the applicability of Davis's Technology Acceptance Model (TAM to agriculturist's acceptance of a knowledge management system (KMS, developed by the authors. It is called AGROWIT. Although the authors used previous Technology Acceptance Model user acceptance research as a basis for investigation of user acceptance of AGROWIT, the model had to be extended and constructs from the Triandis model that were added increased the predictive results of the TAM, but only slightly. Relationships among primary TAM constructs used are in substantive agreement with those characteristic of previous TAM research. Significant positive relationships between perceived usefulness, ease of use, and system usage were consistent with previous TAM research. The observed mediating role of perceived usefulness in the relationship between ease of use and usage was also in consonance with earlier findings. The findings are significant because they suggest that the considerable body of previous TAM-related information technology research may be usefully applied to the knowledge management domain to promote further investigation of factors affecting the acceptance and usage of knowledge management information systems such as AGROWIT by farmers, extension workers, and agriculture researchers.

  17. Linking Technology Capabilities to Marketing Requirements: Case of Indonesian Aircraft Industry

    Directory of Open Access Journals (Sweden)

    Yulianto Suharto

    2014-08-01

    Full Text Available Abstract. The relationship between strategic technology planning and the overall business strategy has been one of the growing fields that attract much interest both from academics and industrials point of view. The increasingly important role that technology plays in today’s business success is well established.Strategic technology planning activities--within a corporate level--are often implemented by applying integrated planning instrument, which allow firms to consider both technology-oriented and product-oriented aspects. This paper is an attempt to explore the role of strategic planning in the high tech industry using a specific case of aerospace industry in Indonesia.  In order to compete effectively inthe open global marketplace, the company must learn to integrate technology managementwith strategic planning. In other words, all top managers have to linktheir technology capabilities to marketing requirements.Keywords:  technology planning; business strategy; technology capability; marketing requirement; strategic mix 

  18. Linking Technology Capabilities to Marketing Requirements: Case of Indonesian Aircraft Industry

    OpenAIRE

    Yulianto Suharto

    2014-01-01

    Abstract. The relationship between strategic technology planning and the overall business strategy has been one of the growing fields that attract much interest both from academics and industrials point of view. The increasingly important role that technology plays in today’s business success is well established.Strategic technology planning activities--within a corporate level--are often implemented by applying integrated planning instrument, which allow firms to consider both technology-ori...

  19. Benefits of agricultural technology innovation capacity to peasant farmers in rural poor areas: The case of DBN-Group, China

    Directory of Open Access Journals (Sweden)

    Mathias Agri Eneji

    2012-09-01

    Full Text Available DaBeiNong (DBN Technology Group Co Ltd is a private enterprise, at the cutting edge of the agricultural high-tech industry in China. It has developed its innovative capabilities through Research and Development (R&D activities, skilled R&D personnel, new products, services, processes and markets. This study contributes to knowledge by identifying and constructing a model of the enterprise innovation capacity; the inputs and outputs of innovation in DBN and 9 other agricultural high-tech enterprises in China. We analyzed the enterprise technology innovation capacity and offered recommendations. Two sets of questionnaires were used; for the peasant farmers, and for the agricultural enterprises. We used the rank factors on an ordinal scale and simple percentages. We used econometric model to analyze seven factors of agricultural enterprise innovation capacity. The results show that R&D is strategic to Agricultural Enterprise Innovation Capacity (AETIC. However, the benefits to the peasant farmers need to be further intensified, and stepped up from its present average level. We found that enterprises with higher capital and larger sales have more R&D investment than those with smaller sales. Promoting agricultural research and rural development is crucial to pro-poor growth, given the potential for smallholder agriculture to rapidly absorb and adopt innovations.

  20. Application of Evolutionary Encryption 2D Barcode Generation Technology in Agricultural Product Quality and Safety Traceability System

    Institute of Scientific and Technical Information of China (English)

    Xiaojun; ZHONG; Zhijie; LAI; Yan; CHEN; Jianxin; QIAN; Xiaocong; HONG; Caiyi; LI

    2014-01-01

    Two-dimensional(2D) barcode technology is an electronic tagging technology based on combination of computer and optical technology. It is an important way of information collection and input. 2D barcode technology has been widely used in various fields of logistics,production automation,and e-commerce,but it also has brought about a series of safety problems. Based on evolutionary encryption technology,this paper improved algorithm of traditional 2D barcode generation,to improve forgery- proof performance of 2D barcode. This algorithm is applied to agricultural products quality and safety traceability system and the results show that it is effective.

  1. Use of precision agriculture technology to investigate spatial variability in nitrogen yields in cut grassland.

    Science.gov (United States)

    Bailey, J S; Wang, K; Jordan, C; Higgins, A

    2001-01-01

    Spatial variability in N uptake and utilisation by swards within uniformly managed field units could be responsible for a significant proportion of the NH3, N2O, NO3- and NOx (NO and NO2) 'pollutants' generated by agriculture and released to the environment. An investigation was commenced, therefore, to quantify, map and explain the spatial variability in sward N yield in a 'large' silage field and to assess the potential for managing this variability using some of the latest precision agriculture technology. Sward dry matter (DM) and N yields were predicted from the results of plant tissue analyses using mathematical models. Sward N yields were found to vary greatly across the field seemingly because of differences in net soil N mineralisation, but the pattern of variability appeared to remain constant with time. Conventional soil analysis of a range of soil chemical and physical properties, however, failed to explain this variability. It was concluded that the N-yield distribution map might be used in place of soil analysis as the basis for varying the rates of N application to different parts of the field with the twin objectives of maximising fertiliser use efficiency and minimising N emissions to air and water.

  2. Democracy and the governance of uncertainty. The case of agricultural gene technologies.

    Science.gov (United States)

    Pellizzoni, L

    2001-09-14

    The use of genetically modified organisms (GMOs) in agriculture and food production is the object of an intense and divisive debate. Drawing on a study on the public perception of agricultural gene technologies carried out in five European countries, the article deals with the policy aspects of the issue, and more precisely on the relation between institutions, experts and the public in a context of deep uncertainty. A theoretical framework is developed and compared with the study findings, suggesting that issues like the GMOs one represent a strong case for a more participatory policy-making. My conclusions suggest a style of governance based on the principles of deliberative democracy, as a suitable approach to the confrontation of different viewpoints and forms of knowledge. This appears to be the best way to improve the overall quality of policy-making: in this I include its legitimacy, the degree of public trust, and also the actual quality of its products. Strengthening the role of the public sphere seems more effective than simply increasing direct decision-making by the populace, and it offers an alternative to the 'elitist' solutions to the crisis of representative democracy.

  3. Agricultural and Food Processing Applications of Pulsed Power and Plasma Technologies

    Science.gov (United States)

    Takaki, Koichi

    Agricultural and food processing applications of pulsed power and plasma technologies are described in this paper. Repetitively operated compact pulsed power generators with a moderate peak power are developed for the agricultural and the food processing applications. These applications are mainly based on biological effects and can be categorized as germination control of plants such as Basidiomycota and arabidopsis inactivation of bacteria in soil and liquid medium of hydroponics; extraction of juice from fruits and vegetables; decontamination of air and liquid, etc. Types of pulsed power that have biological effects are caused with gas discharges, water discharges, and electromagnetic fields. The discharges yield free radicals, UV radiation, intense electric field, and shock waves. Biologically based applications of pulsed power and plasma are performed by selecting the type that gives the target objects the adequate result from among these agents or byproducts. For instance, intense electric fields form pores on the cell membrane, which is called electroporation, or influence the nuclei. This paper mainly describes the application of the pulsed power for the germination control of Basidiomycota i.e. mushroom, inactivation of fungi in the soil and the liquid medium in hydroponics, and extraction of polyphenol from skins of grape.

  4. The Mode Reform of Cultivating Marketing Talents in Agricultural Vocational Colleges Based on the Perspective of Agricultural Enterprises——A Case Study of Wenzhou Vocational College of Science and Technology

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    We conduct survey on the characteristics of demand of agricultural enterprises for agricultural marketing talents from the following 6 aspects:the professional marketing talents needed urgently by the agricultural enterprises,the amount of demand of agricultural enterprises for the marketing talents,the jobs offered by the agricultural enterprises,the educational background of agricultural marketing talents favored by the agricultural enterprises,the requirements posed by the agricultural enterprises on the work experience of agricultural marketing talents,and the quality requirements posed by the agricultural enterprises on the agricultural marketing talents.We analyse the problems existing in the cultivation mode of marketing talents in agricultural vocational colleges as follows:the feature of major is not outstanding;the contradiction between supply and demand is prominent;it is disconnected with the practical needs of agricultural enterprises;the cultivation form of practical ability is simple.On the basis of this,taking Wenzhou Vocational College of Science and Technology as an example,we advance the new mode of cultivating inter-disciplinary talents integrating "marketing technique+technique marketing",and establish characteristic agricultural course combo system on the basis of vocational position orientation.In the meantime,we propose that we should conduct close college-enterprise cooperation with the local leading agricultural enterprises.This cultivation mode reform of talents is favorable for the agricultural enterprises,especially small and medium-sized agricultural enterprises to foster "marketable" agricultural marketing talents,elevate the comprehensive competitiveness of small and medium-sized agricultural enterprises,serve the local economy,and promote the development of modern agriculture,and China’s agriculture,farmer,and countryside.

  5. New frontiers of multidisciplinary research in STEAM-H (science, technology, engineering, agriculture, mathematics, and health)

    CERN Document Server

    Springer Proceedings in Mathematics & Statistics : Volume 90

    2014-01-01

    This highly multidisciplinary volume contains contributions from leading researchers in STEAM-H disciplines (Science, Technology, Engineering, Agriculture, Mathematics and Health). The volume explores new frontiers in multidisciplinary research, including: the mathematics of cardiac arrhythmia; brain research on working memory; penalized ordinal regression to classify melanoma skin samples; forecasting of time series data; dynamics of niche models; analysis of chemical moieties as anticancer agents; study of gene locus control regions; qualitative mathematical modelling; convex quadrics and group circle systems; remanufacturing planning and control; complexity reduction of functional differential equations; computation of viscous interfacial motion; and differentiation in human pluripotent stem cells. An extension of a seminar series at Virginia State University, the collection is intended to foster student interest and participation in interdisciplinary research, and to stimulate new research. The content wi...

  6. Propulsion Control and Health Management (PCHM) Technology for Flight Test on the C-17 T-1 Aircraft

    Science.gov (United States)

    Simon, Donald L.; Garg, Sanjay; Venti, Michael

    2004-01-01

    The C-I 7 T-l Globemaster III is an Air Force flight research vehicle located at Edwards Air Force Base. NASA Dryden and the C-17 System Program Office have entered into a Memorandum of Agreement to permit NASA the use of the C-I 7 T-I to conduct flight research on a mutually coordinated schedule. The C-17 Propulsion Control and Health Management (PCHM) Working Group was formed in order to foster discussion and coordinate planning amongst the various government agencies conducting PCHM research with a potential need for flight testing, and to communicate to the PCHM community the capabilities of the C-17 T-l aircraft to support such flight testing. This paper documents the output of this Working Group, including a summary of the candidate PCHM technologies identified and their associated benefits relative to NASA goals and objectives.

  7. Creating a Test Validated Structural Dynamic Finite Element Model of the Multi-Utility Technology Test Bed Aircraft

    Science.gov (United States)

    Pak, Chan-Gi; Truong, Samson S.

    2014-01-01

    Small modeling errors in the finite element model will eventually induce errors in the structural flexibility and mass, thus propagating into unpredictable errors in the unsteady aerodynamics and the control law design. One of the primary objectives of Multi Utility Technology Test Bed, X-56A, aircraft is the flight demonstration of active flutter suppression, and therefore in this study, the identification of the primary and secondary modes for the structural model tuning based on the flutter analysis of X-56A. The ground vibration test validated structural dynamic finite element model of the X-56A is created in this study. The structural dynamic finite element model of the X-56A is improved using a model tuning tool. In this study, two different weight configurations of the X-56A have been improved in a single optimization run.

  8. TIGER -- A technology to improve the delivery capability of nuclear bombs and the survivability of the delivery aircraft

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1980-12-31

    The TIGER (Terminal guided and Extended-Range) Program was initiated in 1972 to study improved delivery capabilities for stockpiled tactical nuclear bombs. The Southeast Asia conflict fostered the development of air-delivered standoff conventional weapons utilizing terminal guidance systems. SNL initiated the TIGER program to determine if current nuclear bombs could be provided with a similarly accurate standoff capabilities. These conventional weapon delivery techniques, while allowing highly accurate attack, generally require entering the target area at high altitude to establish line of sight to the target. In parallel with the TIGER program, system studies analyzed this concept and showed marked improvement in aircraft and weapon survivability with moderate standoff (10--20 km) if low level deliveries (60 m) could be accomplished. As a result of this work, the TIGER program was redirected in early 1974 to demonstrate a standoff bomb with good accuracy (90 m CEP) when delivered from low flying aircraft. This program redirection resulted in the selection of an inertial guidance system to replace the earlier terminal guidance systems. This program was called the Extended-Range Bomb (ERB). In May 1974, a joint Air Force/DOE study identified the desirability of having a single tactical weapon which could be employed against either fixed, preselected targets, or mobile battlefield targets. Studies conducted on the ERB system showed that the inertially guided weapon could fly not only the standoff mission but also a return-to-target mission against the mobile battlefield targets whose locations are not known accurately enough to use a standoff delivery. The ERB program evolved from these initial investigations into an exploratory program to develop the hardware and demonstrate the technology required to fly standoff and return-to-target trajectories. The application of this technology in the form of field retrofit kits to the B61 bomb is called TIGER II.

  9. TIGER -- A technology to improve the delivery capability of nuclear bombs and the survivability of the delivery aircraft

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1980-12-31

    The TIGER (Terminal guided and Extended-Range) Program was initiated in 1972 to study improved delivery capabilities for stockpiled tactical nuclear bombs. The Southeast Asia conflict fostered the development of air-delivered standoff conventional weapons utilizing terminal guidance systems. SNL initiated the TIGER program to determine if current nuclear bombs could be provided with a similarly accurate standoff capabilities. These conventional weapon delivery techniques, while allowing highly accurate attack, generally require entering the target area at high altitude to establish line of sight to the target. In parallel with the TIGER program, system studies analyzed this concept and showed marked improvement in aircraft and weapon survivability with moderate standoff (10--20 km) if low level deliveries (60 m) could be accomplished. As a result of this work, the TIGER program was redirected in early 1974 to demonstrate a standoff bomb with good accuracy (90 m CEP) when delivered from low flying aircraft. This program redirection resulted in the selection of an inertial guidance system to replace the earlier terminal guidance systems. This program was called the Extended-Range Bomb (ERB). In May 1974, a joint Air Force/DOE study identified the desirability of having a single tactical weapon which could be employed against either fixed, preselected targets, or mobile battlefield targets. Studies conducted on the ERB system showed that the inertially guided weapon could fly not only the standoff mission but also a return-to-target mission against the mobile battlefield targets whose locations are not known accurately enough to use a standoff delivery. The ERB program evolved from these initial investigations into an exploratory program to develop the hardware and demonstrate the technology required to fly standoff and return-to-target trajectories. The application of this technology in the form of field retrofit kits to the B61 bomb is called TIGER II.

  10. A Review of Wireless Sensor Technologies and Applications in Agriculture and Food Industry: State of the Art and Current Trends

    Directory of Open Access Journals (Sweden)

    Ignacio Robla

    2009-06-01

    Full Text Available The aim of the present paper is to review the technical and scientific state of the art of wireless sensor technologies and standards for wireless communications in the Agri-Food sector. These technologies are very promising in several fields such as environmental monitoring, precision agriculture, cold chain control or traceability. The paper focuses on WSN (Wireless Sensor Networks and RFID (Radio Frequency Identification, presenting the different systems available, recent developments and examples of applications, including ZigBee based WSN and passive, semi-passive and active RFID. Future trends of wireless communications in agriculture and food industry are also discussed.

  11. Aircraft Noise Prediction

    OpenAIRE

    2014-01-01

    This contribution addresses the state-of-the-art in the field of aircraft noise prediction, simulation and minimisation. The point of view taken in this context is that of comprehensive models that couple the various aircraft systems with the acoustic sources, the propagation and the flight trajectories. After an exhaustive review of the present predictive technologies in the relevant fields (airframe, propulsion, propagation, aircraft operations, trajectory optimisation), the paper add...

  12. A strategy for climate evaluation of aircraft technology: an efficient climate impact assessment tool – AirClim

    Directory of Open Access Journals (Sweden)

    A. Stenke

    2007-08-01

    Full Text Available Climate change is a challenge to society and to cope with requires assessment tools which are suitable to evaluate new technology options with respect to their impact on climate. Here we present AirClim, a model which comprises a linearisation of the processes occurring from the emission to an estimate in near surface temperature change, which is presumed to be a reasonable indicator for climate change. The model is designed to be applicable to aircraft technology, i.e.~the climate agents CO2, H2O, CH4 and O3 (latter two resulting from NOx-emissions and contrails are taken into account. It employs a number of precalculated atmospheric data and combines them with aircraft emission data to obtain the temporal evolution of atmospheric concentration changes, radiative forcing and temperature changes. The linearisation is based on precalculated data derived from 25 steady-state simulations of the state-of-the-art climate-chemistry model E39/C, which include sustained normalised emissions at various atmospheric regions. The results show that strongest climate impacts from ozone changes occur for emissions in the tropical upper troposphere (60 mW/m²; 80 mK for 1 TgN emitted, whereas from methane in the middle tropical troposphere (–2.7% change in methane lifetime; –30 mK per TgN. The estimate of the temperature changes caused by the individual climate agents takes into account a perturbation lifetime, related to the region of emission. A comparison of this approach with results from the TRADEOFF and SCENIC projects shows reasonable agreement with respect to concentration changes, radiative forcing, and temperature changes. The total impact of a supersonic fleet on radiative forcing (mainly water vapour is reproduced within 5%. For subsonic air traffic (sustained emissions after 2050 results show that although ozone-radiative forcing is much less important than that from CO2 for the year 2100. However the impact on temperature is of comparable size

  13. Additional Development and Systems Analyses of Pneumatic Technology for High Speed Civil Transport Aircraft

    Science.gov (United States)

    Englar, Robert J.; Willie, F. Scott; Lee, Warren J.

    1999-01-01

    In the Task I portion of this NASA research grant, configuration development and experimental investigations have been conducted on a series of pneumatic high-lift and control surface devices applied to a generic High Speed Civil Transport (HSCT) model configuration to determine their potential for improved aerodynamic performance, plus stability and control of higher performance aircraft. These investigations were intended to optimize pneumatic lift and drag performance; provide adequate control and longitudinal stability; reduce separation flowfields at high angle of attack; increase takeoff/climbout lift-to-drag ratios; and reduce system complexity and weight. Experimental aerodynamic evaluations were performed on a semi-span HSCT generic model with improved fuselage fineness ratio and with interchangeable plain flaps, blown flaps, pneumatic Circulation Control Wing (CCW) high-lift configurations, plain and blown canards, a novel Circulation Control (CC) cylinder blown canard, and a clean cruise wing for reference. Conventional tail power was also investigated for longitudinal trim capability. Also evaluated was unsteady pulsed blowing of the wing high-lift system to determine if reduced pulsed mass flow rates and blowing requirements could be made to yield the same lift as that resulting from steady-state blowing. Depending on the pulsing frequency applied, reduced mass flow rates were indeed found able to provide lift augmentation at lesser blowing values than for the steady conditions. Significant improvements in the aerodynamic characteristics leading to improved performance and stability/control were identified, and the various components were compared to evaluate the pneumatic potential of each. Aerodynamic results were provided to the Georgia Tech Aerospace System Design Lab. to conduct the companion system analyses and feasibility study (Task 2) of theses concepts applied to an operational advanced HSCT aircraft. Results and conclusions from these

  14. Cost/benefit analysis of advanced materials technologies for future aircraft turbine engines

    Science.gov (United States)

    Stephens, G. E.

    1980-01-01

    The materials technologies studied included thermal barrier coatings for turbine airfoils, turbine disks, cases, turbine vanes and engine and nacelle composite materials. The cost/benefit of each technology was determined in terms of Relative Value defined as change in return on investment times probability of success divided by development cost. A recommended final ranking of technologies was based primarily on consideration of Relative Values with secondary consideration given to changes in other economic parameters. Technologies showing the most promising cost/benefits were thermal barrier coated temperature nacelle/engine system composites.

  15. Modern and prospective technologies for weather modification activities: Developing a framework for integrating autonomous unmanned aircraft systems

    Science.gov (United States)

    DeFelice, T. P.; Axisa, Duncan

    2017-09-01

    This paper builds upon the processes and framework already established for identifying, integrating and testing an unmanned aircraft system (UAS) with sensing technology for use in rainfall enhancement cloud seeding programs to carry out operational activities or to monitor and evaluate seeding operations. We describe the development and assessment methodologies of an autonomous and adaptive UAS platform that utilizes in-situ real time data to sense, target and implement seeding. The development of a UAS platform that utilizes remote and in-situ real-time data to sense, target and implement seeding deployed with a companion UAS ensures optimal, safe, secure, cost-effective seeding operations, and the dataset to quantify the results of seeding. It also sets the path for an innovative, paradigm shifting approach for enhancing precipitation independent of seeding mode. UAS technology is improving and their application in weather modification must be explored to lay the foundation for future implementation. The broader significance lies in evolving improved technology and automating cloud seeding operations that lowers the cloud seeding operational footprint and optimizes their effectiveness and efficiency, while providing the temporal and spatial sensitivities to overcome the predictability or sparseness of environmental parameters needed to identify conditions suitable for seeding, and how such might be implemented. The dataset from the featured approach will contain data from concurrent Eulerian and Lagrangian perspectives over sub-cloud scales that will facilitate the development of cloud seeding decision support tools.

  16. Usage of info-communication technologies at agricultural SME's in the Hungarian North-Plain region

    Directory of Open Access Journals (Sweden)

    Adam Pentek

    2012-06-01

    Full Text Available The ICT technologies are present in every area of life its role is indisputable, that is why they have become important production resource for the enterprises. In this aspect, the situation of the SMEs (small- and medium sized enterprises is difficult, as the utilisation of these technologies does not reach the desired level neither in Hungary, nor in the European Union. In this paper we will present the result of a research. This survey measure of the e-activity of the SME’s at 2010 in the North-Plan region in Hungary. Based on survey’s data by the help of the cluster analysis we will try to answer the following question: From the side of the SME’s which is the most useful electronic method in each part of the business process. The cluster analysis based on the types of communication channels, business partners and the business processes helps the companies to define the communication developments in the agriculture. The way we see it can show the way to the decision makers to develop their companies’ e-business even thought they have scarce resources.

  17. Antibiotic resistance genes fate and removal by a technological treatment solution for water reuse in agriculture.

    Science.gov (United States)

    Luprano, Maria Laura; De Sanctis, Marco; Del Moro, Guido; Di Iaconi, Claudio; Lopez, Antonio; Levantesi, Caterina

    2016-11-15

    In order to mitigate the potential effects on the human health which are associated to the use of treated wastewater in agriculture, antibiotic resistance genes (ARGs) are required to be carefully monitored in wastewater reuse processes and their spread should be prevented by the development of efficient treatment technologies. Objective of this study was the assessment of ARGs reduction efficiencies of a novel technological treatment solution for agricultural reuse of municipal wastewaters. The proposed solution comprises an advanced biological treatment (Sequencing Batch Biofilter Granular Reactor, SBBGR), analysed both al laboratory and pilot scale, followed by sand filtration and two different disinfection final stages: ultraviolet light (UV) radiation and peracetic acid (PAA) treatments. By Polymerase Chain Reaction (PCR), the presence of 9 ARGs (ampC, mecA, ermB, sul1, sul2, tetA, tetO, tetW, vanA) were analysed and by quantitative PCR (qPCR) their removal was determined. The obtained results were compared to the reduction of total bacteria (16S rDNA gene) and of a faecal contamination indicator (Escherichia coli uidA gene). Only four of the analysed genes (ermB, sul1, sul2, tetA) were detected in raw wastewater and their abundance was estimated to be 3.4±0.7 x10(4) - 9.6±0.5 x10(9) and 1.0±0.3 x10(3) to 3.0±0.1 x10(7) gene copies/mL in raw and treated wastewaters, respectively. The results show that SBBGR technology is promising for the reduction of ARGs, achieving stable removal performance ranging from 1.0±0.4 to 2.8±0.7 log units, which is comparable to or higher than that reported for conventional activated sludge treatments. No reduction of the ARGs amount normalized to the total bacteria content (16S rDNA), was instead obtained, indicating that these genes are removed together with total bacteria and not specifically eliminated. Enhanced ARGs removal was obtained by sand filtration, while no reduction was achieved by both UV and PAA disinfection

  18. Characteristics of “Abstracts of Science and Technology in Japan, Agro-Industries” and Related Agricultural Papers

    Science.gov (United States)

    Kamiya, Shukuko; Sasaki, Toshio

    Japan Agricultural Library Council has cooperated with JICST in making abstracts of “Abstracts of Science and Technology in Japan, Agro-Industries” published by JICST over these five years. Taking this opportunity of starting computerized edition of the Title and changing the coverage the author and others reviewed the abstracting work so far. The outline of the Title is first described. Then the number of journals and citations covered in it by subject are compared with those of Japan Agriculture Literature Article Index of which main users are agricultural scientists and researchers and which is used as reference tool of selecting papers to be included in English titles. The characteristics and points to be improved are explained. Characteristics of agriculture literature, which are seen through making English abstracts are also described.

  19. Application of Bar Code Technology in Aircraft Spare Parts Management%条码技术在航材管理中的应用

    Institute of Scientific and Technical Information of China (English)

    李卫灵; 郭星香; 刘臣宇; 周斌

    2011-01-01

    为提高航材管理的自动化管理水平,提出在航材管理中使用二维QR条码技术,并阐述了编码方案和业务流程改造方案.%Application of barcode technology will greatly enhance the level of automation of the aircraft spare parts management. This paper discusses the use of the QR code in the aircraft spare parts management, then explains the scenario of coding and working procedure reengineering.

  20. The Design of Technological Instructions for an Assembling the Aircraft Engine

    Directory of Open Access Journals (Sweden)

    Martin Novák

    2016-04-01

    Full Text Available This article is about a design of new technological instructions for an aviation industry. The goal of the new technological instructions is to replace the old ones. The old instructions are less clear and less suitable for new workers. A change and an upgrade of the new instructions is shown on the technological instructions for disassembling of free turbine´s blades during general overhaul. The free turbine is from the M601 engine. The new instructions should be more efficient and enhanced general overhaul.

  1. Airline return-on-investment model for technology evaluation. [computer program to measure economic value of advanced technology applied to passenger aircraft

    Science.gov (United States)

    1974-01-01

    This report presents the derivation, description, and operating instructions for a computer program (TEKVAL) which measures the economic value of advanced technology features applied to long range commercial passenger aircraft. The program consists of three modules; and airplane sizing routine, a direct operating cost routine, and an airline return-on-investment routine. These modules are linked such that they may be operated sequentially or individually, with one routine generating the input for the next or with the option of externally specifying the input for either of the economic routines. A very simple airplane sizing technique was previously developed, based on the Brequet range equation. For this program, that sizing technique has been greatly expanded and combined with the formerly separate DOC and ROI programs to produce TEKVAL.

  2. Assessment of Computer Technology Availability, Accessibility and Usage by Agricultural Education Student Teachers in Secondary Schools in Botswana

    Science.gov (United States)

    Hulela, K.; Rammolai, M.; Mpatane, W.

    2014-01-01

    This study examines the availability, accessibility and usability of computer as a form of information and communication technologies (ICTs) by student teachers in secondary schools. 44 out of 51 student teachers of Agriculture responded to the questionnaire. Means and percentages were used to analyze the data to establish the availability,…

  3. Perceptions of Constraints Affecting Adoption of Women-in-Agriculture Programme Technologies in the Niger Delta, Nigeria

    Directory of Open Access Journals (Sweden)

    Iniobong A. Akpabio

    2012-09-01

    Full Text Available The study focused on constraints affecting the adoption ofinnovative agricultural technologies disseminated by theWomen-in-Agriculture (WIA unit of the Akwa Ibom AgriculturalDevelopment Programme (AKADEP to its women clientele.The study also ascertained the awareness and adoption levelsof such introduced technologies. Findings revealed that respondentswere aware of 61.9% of introduced technologies,while only 33.3% were fully adopted. The study also identifiedseven factors responsible for the non-adoption of womenfarmers’ related technologies. The three highest ranking constrainingfactors were revealed as; high cost of inputs, lowincome level of women farmers and lack of regular contactwith WIA extension agents. Reasons have been proffered forthe relatively low technologies’ adoption levels. Recommendationshave also been made to enhance the technologyadoption level. These include the necessity to introduce onlysocio- economically and culturally compatible technologies toWIA clientele, a wholesale focus on follow-up activities afterinitial group based technology introduction activities, and theattachment of a credit scheme to the WIA program.

  4. Demonstration and Radiation Extension mode of Agricultural Technology——A Case of the Science and Technology Project of High Yield in Hebei Province

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Firstly,relying on the science and technology project of high yield in Hebei Province,connotation of agricultural technology demonstration and extension mode and the high yield grain project in Hebei Province is introduced.Extension mode of agricultural technology demonstration and radiation is constructed.Agricultural technology demonstration and radiation mode includes the radiation center,primary irradiation and secondary irradiation.Secondly,management system and operational mechanism of agricultural technology demonstration and radiation mode are discussed,mainly expressed in establishing leading group in each demonstration county(city),carrying out leader contract responsibility system,establishing expert advisor steering group and setting up core experts group for subject,establishing technical experts group for subject,setting up leading group in the radiation area,carrying out chief expert responsibility system and technician matrix responsibility system,establishing the operating mechanism of "open,flow,competition and collaboration" with "test area-expert two-way selection" as the core content.Finally,countermeasures to improve the agricultural technology demonstration and radiation mode is put forward,such as establishing the rural technology demonstration base,strengthening cooperation with enterprises,and adopting flexible technical training,so as to promote the spread of agricultural high-tech,to increase the contribution rate of agricultural technology,and to offer ideas for agricultural technology extension model at the new era.

  5. The economic and environmental consequences of implementing nitrogen-efficient technologies and management practices in agriculture.

    Science.gov (United States)

    Zhang, Xin; Mauzerall, Denise L; Davidson, Eric A; Kanter, David R; Cai, Ruohong

    2015-03-01

    Technologies and management practices (TMPs) that reduce the application of nitrogen (N) fertilizer while maintaining crop yields can improve N use efficiency (NUE) and are important tools for meeting the dual challenges of increasing food production and reducing N pollution. However, because farmers operate to maximize their profits, incentives to implement TMPs are limited, and TMP implementation will not always reduce N pollution. Therefore, we have developed the NUE Economic and Environmental impact analytical framework (NUE) to examine the economic and environmental consequences of implementing TMPs in agriculture, with a specific focus on farmer profits, N fertilizer consumption, N losses, and cropland demand. Our analytical analyses show that impact of TMPs on farmers' economic decision-making and the environment is affected by how TMPs change the yield ceiling and the N fertilization rate at the ceiling and by how the prices of TMPs, fertilizer, and crops vary. Technologies and management practices that increase the yield ceiling appear to create a greater economic incentive for farmers than TMPs that do not but may result in higher N application rates and excess N losses. Nevertheless, the negative environmental impacts of certain TMPs could be avoided if their price stays within a range determined by TMP yield response, fertilizer price, and crop price. We use a case study on corn production in the midwestern United States to demonstrate how NUE can be applied to farmers' economic decision-making and policy analysis. Our NUE framework provides an important tool for policymakers to understand how combinations of fertilizer, crop, and TMP prices affect the possibility of achieving win-win outcomes for farmers and the environment.

  6. Building political and financial support for science and technology for agriculture

    Science.gov (United States)

    Beachy, Roger N.

    2014-01-01

    The high rate of return on investments in research and development in agriculture, estimated at between 20- and 40-fold, provides a strong rationale for increasing financial support for such research. Furthermore, the urgency to provide sufficient nutrition for a growing population amid growing demands for an expanding bioeconomy, while facing population growth and changing global weather patterns heightens the urgency to expand research and development in this field. Unfortunately, support by governments for research has increased at a fraction of the rate of increases in support of research for health, energy, etc. Although there have been significant increases in investments by the private sector over the past two decades, much of the foundational research that supports private-sector activities is generated in the public sector. To achieve the greatest benefits of breakthroughs in research, it may be necessary to reconfigure research funding and technology transfer mechanisms in order to more rapidly apply discoveries to local needs as well as to global challenges. Some changes will likely require significant organizational, administrative and operational changes in education and research institutions. PMID:24535386

  7. Grassland Degradation, Construction and the Economic-technological Strategies of Sustainable Development of Grassland-agriculture

    Institute of Scientific and Technical Information of China (English)

    WANG Hua; YU Hua-ying; OKAMOTO Chinobu; WANG Yu-sheng

    2004-01-01

    Natural grassland in the West of Northeastern China is located in 40° 0′ - 43° 5′ N latitude and 117° 0′ -127° 5′ Elongitude. It lies in the Lisp River Valley, the Songhua River Valley and Nen River Valley. About 130 years ago, this region had rich natural grassland resources, was numerically 26.67 millions in hectare of grasslands.Since the last stage of Qing Dynasty, the grassland has been destroyed seriously in 3 times. Up to now, this region only preserved about 2 millions in hectare of the grasslands. In addition, 3.33 millions in hectare of the grasslands have changed from primary grassland to desertification, salinizatio-nalkalinization and degeneration grasslands in the form of patches of bare soil (their simple form of a name is "3 kinds of degeneration grasslands"). This paper indicaed that in any period both grasslands destruction and its restoration were relevant to economic changes and economic systems,particularly to market economy in that time. The following agricultural economic-technological strategies have been production bases of concentrated feed crops and coarse herbage crops.

  8. Genetically modified crops: the fastest adopted crop technology in the history of modern agriculture

    Directory of Open Access Journals (Sweden)

    Khush Gurdev S

    2012-09-01

    Full Text Available Abstract The major scientific advances of the last century featured the identification of the structure of DNA, the development of molecular biology and the technology to exploit these advances. These breakthroughs gave us new tools for crop improvement, including molecular marker-aided selection (MAS and genetic modification (GM. MAS improves the efficiency of breeding programs, and GM allows us to accomplish breeding objectives not possible through conventional breeding approaches. MAS is not controversial and is now routinely used in crop improvement programs. However, the international debate about the application of genetic manipulation to crop improvement has slowed the adoption of GM crops in developing as well as in European countries. Since GM crops were first introduced to global agriculture in 1996, Clive James has published annual reports on the global status of commercialized GM crops as well as special reports on individual GM crops for The International Service for the Acquisition of Agri-biotech Applications (ISAAA. His 34th report, Global Status of Commercialized Biotech/ GM crops: 2011 [1] is essential reading for those who are concerned about world food security.

  9. Effectiveness of sloping agricultural land technology on soil fertility status of mid-hills in Nepal

    Institute of Scientific and Technical Information of China (English)

    Kiran Lamichhane

    2013-01-01

    Hedgerows with intercropping systems were established at the ICIMOD test and demonstration site at Godawari to assess the effective-ness of Sloping Agricultural Land Technology (SALT) in reducing run-off water volume, controlling soil loss, increasing crop production, and improving soil fertility in the mid-hills of Nepal. Runoff water volume (1996-2002), soil loss (1996-2002) and maize yield (1995-2001), and soil fertility-related parameters were assessed on SALT models with three factors:the type of nitrogen-fixing plant, the farmers’ practice, and fertilizer use. Results showed a significant effect of Alnus nepalensis and/or Indigofera dosua on runoff water volume, soil loss, crop produc-tion, soil water retention, and soil nutrients (NPK). Farmers’ practice and fertilization did not play a significant role in reducing runoff water and soil loss. However, farmers’ practice significantly increased crop produc-tion. Therefore, integrating soil conservation approaches on SALT sys-tems enhances stable economic output to hills and mountain farmers.

  10. Building political and financial support for science and technology for agriculture.

    Science.gov (United States)

    Beachy, Roger N

    2014-04-05

    The high rate of return on investments in research and development in agriculture, estimated at between 20- and 40-fold, provides a strong rationale for increasing financial support for such research. Furthermore, the urgency to provide sufficient nutrition for a growing population amid growing demands for an expanding bioeconomy, while facing population growth and changing global weather patterns heightens the urgency to expand research and development in this field. Unfortunately, support by governments for research has increased at a fraction of the rate of increases in support of research for health, energy, etc. Although there have been significant increases in investments by the private sector over the past two decades, much of the foundational research that supports private-sector activities is generated in the public sector. To achieve the greatest benefits of breakthroughs in research, it may be necessary to reconfigure research funding and technology transfer mechanisms in order to more rapidly apply discoveries to local needs as well as to global challenges. Some changes will likely require significant organizational, administrative and operational changes in education and research institutions.

  11. Encouraging and Discouraging Factors in Application of Information and Communication Technologies in Agricultural Extension in Isfahan Province of Iran

    Directory of Open Access Journals (Sweden)

    Gholamreza Pezeshki Rad

    2015-09-01

    Full Text Available The benefits of Information and Communication Technologies (ICTs for agricultural extension purposes and activities are obvious. The main objective of this article is to identify encouraging and discouraging factors in application of ICTs in agricultural extension in Isfahan province of Iran. This study investigated areas of ICTs application by Extension Workers (EWs, too. The research design was a descriptive method. The population includes 320 Isfahan province EWs that 200 person were choose by census and stratified sampling methods. In our contribution we focused on finding. Face and content validity of the questionnaire was established using a panel of experts consisting of faculty members in the Departments of Agricultural Education and Extension, Tarbiat Modares University and extension officers in the Isfahan Province Agricultural Jihad Organization. Cronbach's Alpha to estimate the reliability of the instrument was among 82.6 - 87.8. On the ranking of principal areas of applying ICTs by EWs in extension “typing letters/report”, and “prepare and protect file on process basic agricultural and rural information”, and “access to the latest agricultural news and information”, had most usage. The main result of the study revealed that the EWs in the study approximately use ICT quite a bit. For EWs ICT Encouraging Items Principal FactorAnalysis extracted four factors which accounted for 76.24% of the total variance. And Factor analysis for EWs ICT discouraging Items extracted six factors which accounted for 62.84% of the total variance.

  12. International technology transfer: building theory from a multiple case-study in the aircraft industry

    NARCIS (Netherlands)

    Steenhuis, Harm-Jan; Bruijn, de Erik J.

    2005-01-01

    International technology transfer occurs frequently in international operations, for example in cases of foreign direct investment where companies set-up existing manufacturing lines in new locations. It also occurs in situations of international outsourcing where a new supplier receives product and

  13. Barriers to the adoption and diffusion of technological innovations for climate-smart agriculture in Europe: evidence from the Netherlands, France, Switzerland and Italy

    NARCIS (Netherlands)

    Long, T.B.; Blok, V.; Coninx, I.

    2016-01-01

    Climate-smart agriculture (CSA) is one response to the challenges faced by agriculture due to climate change. As with other sustainability transitions, technological innovation is highlighted as playing a critical role, however, the adoption and diffusion of technological innovations in OECD countri

  14. Enhanced Vision Flight Deck Technology for Commercial Aircraft Low-Visibility Surface Operations

    Science.gov (United States)

    Arthur, Jarvis J., III; Norman, R. Michael; Kramer, Lynda J.; Prinzel, Lawrence J., III; Ellis, Kyle K. E.; Harrison, Stephanie J.; Comstock, J. Ray

    2013-01-01

    NASA Langley Research Center and the FAA collaborated in an effort to evaluate the effect of Enhanced Vision (EV) technology display in a commercial flight deck during low visibility surface operations. Surface operations were simulated at the Memphis, TN (FAA identifier: KMEM) air field during nighttime with 500 Runway Visual Range (RVR) in a high-fidelity, full-motion simulator. Ten commercial airline flight crews evaluated the efficacy of various EV display locations and parallax and mini cation effects. The research paper discusses qualitative and quantitative results of the simulation experiment, including the effect of EV display placement on visual attention, as measured by the use of non-obtrusive oculometry and pilot mental workload. The results demonstrated the potential of EV technology to enhance situation awareness which is dependent on the ease of access and location of the displays. Implications and future directions are discussed.

  15. Euler Technology Assessment for Preliminary Aircraft Design: Compressibility Predictions by Employing the Cartesian Unstructured Grid SPLITFLOW Code

    Science.gov (United States)

    Finley, Dennis B.; Karman, Steve L., Jr.

    1996-01-01

    The objective of the second phase of the Euler Technology Assessment program was to evaluate the ability of Euler computational fluid dynamics codes to predict compressible flow effects over a generic fighter wind tunnel model. This portion of the study was conducted by Lockheed Martin Tactical Aircraft Systems, using an in-house Cartesian-grid code called SPLITFLOW. The Cartesian grid technique offers several advantages, including ease of volume grid generation and reduced number of cells compared to other grid schemes. SPLITFLOW also includes grid adaption of the volume grid during the solution to resolve high-gradient regions. The SPLITFLOW code predictions of configuration forces and moments are shown to be adequate for preliminary design, including predictions of sideslip effects and the effects of geometry variations at low and high angles-of-attack. The transonic pressure prediction capabilities of SPLITFLOW are shown to be improved over subsonic comparisons. The time required to generate the results from initial surface data is on the order of several hours, including grid generation, which is compatible with the needs of the design environment.

  16. The impact of fuels on aircraft technology through the year 2000

    Science.gov (United States)

    Grobman, J.; Reck, G. M.

    1980-01-01

    In the future, it may be necessary to use jet fuels with a broader range of properties in order to insure a more flexible and reliable supply and to minimize energy consumption and processing costs at the refinery. This paper describes research being conducted to (1) determine the potential range of properties for future jet fuels, (2) establish a data base of fuel property effects on propulsion system components, (3) evolve and evaluate advanced component technology that would permit the use of broader property fuels and (4) identify technical and economic trade-offs within the overall fuel production-air transportation system associated with variations in fuel properties.

  17. Agricultural Innovation - Multiple grounds for technology policies in the Red River Delta of Vietnam

    NARCIS (Netherlands)

    Nguyen Van Linh,

    2001-01-01

    Food security, a lingering concern although is not as critical as in the past, remains one of the most important strategies for agricultural development in Vietnam. In conjunction with this strategy, productivity is very much a concern of the government. However, growth in agricultural productivity

  18. AGRICULTURAL CHEMICALS TECHNOLOGY, A SUGGESTED TWO-YEAR POST HIGH SCHOOL CURRICULUM AND COURSE OUTLINES.

    Science.gov (United States)

    HALTERMAN, JERRY; AND OTHERS

    DATA REVEALED BY STUDIES OF AGRICULTURAL BUSINESS TRAINING NEEDS CONDUCTED IN SEVERAL STATES PROMPTED THE DESIGN OF AN INSTRUCTIONAL MATERIALS SERIES TO ASSIST STATE AND LOCAL VOCATIONAL EDUCATION LEADERS IN DEVELOPING PROGRAMS TO PREPARE YOUTH AND ADULTS FOR EMPLOYMENT AND ADVANCEMENT IN OFF-FARM AGRICULTURAL OCCUPATIONS. THIS DOCUMENT, THE…

  19. Agricultural innovation : multiple grounds for technology policies in the Red River Delta of Vietnam

    NARCIS (Netherlands)

    Nguyen Van Linh,

    2001-01-01

    Food security, a lingering concern although is not as critical as in the past, remains one of the most important strategies for agricultural development in Vietnam. In conjunction with this strategy, productivity is very much a concern of the government. However, growth in agricultural

  20. Mulching as a mitigation agricultural technology against land degradation in the wake of climate change

    Directory of Open Access Journals (Sweden)

    Bhanooduth Lalljee

    2013-12-01

    Full Text Available The sloping topography of the island of Rodrigues (an outer island dependency of the Republic of Mauritius makes it very prone to soil erosion, and loss of fertile topsoil. Climate variability and climate change in the form of increasing temperatures, long periods of drought followed by short periods of torrential rains are exacerbating this situation. Mulching is a cheap, affordable, sustainable agricultural technology for sustainable soil and land management and reducing soil erosion, which can be adopted by small as well as large farmers. The present work on mulching was carried out in Rodrigues in farmers’ fields that were prone to severe soil erosion (8% slope Banana (Musa sp leaves, coconut (Cocos nucifera leaves, and vetiver (Vetiveria zizanoides grass, at 0 t ha −1, 10 t ha −1, 20 t ha −1 and 40 t ha −1, were used as natural organic mulches after seeding the plots with maize in a randomised block design with four replicates. Runoff and sediment were collected from the treated and control plots, and analysed for total sediments, total runoff, and nutrient content (N, P, K. Results showed that all the mulches tested contributed to lowering of soil and nutrient losses, albeit in varying amounts. Coconut leaves mulch was found to be the most efficient, followed by vetiver and then banana leaves. Percentage mitigation in soil and nutrient erosion was found to be 28. 9% for banana leaves at 10 t ha −1, and 57. 3% for coconut leaves at 40 t ha −1. The reduction of soil and nutrient losses was attributed to the mechanical barrier provided by the mulches, and also to the reduction in the momentum of raindrops acting on the soil aggregates. Mulching also contributed to increasing infiltration rate, lowering temperature and therefore lowering evaporation.

  1. Investigation study for technological application of alternative methods for the energy exploitation of biomass/agricultural residues in Northern Greece

    Directory of Open Access Journals (Sweden)

    Zabaniotou Anastasia A.

    2007-01-01

    Full Text Available Biomass energy potential is addressed to be the most promising among the renewable energy sources, due to its spread and availability worldwide. Apart form that, biomass has the unique advantage among the rest of renewable energy sources, to be able to provide solid, liquid, and gaseous fuels that can be stored, transported, and utilized, far away from the point of origin. For the northern region of Macedonia in Greece, biomass utilization is considered to be a major issue, due to the considerably intensive regional agricultural activities. Wood by-products, fruit cores, rice husk and cotton gin waste provide a promising energy source for the region. The energy potential of the available agricultural biomass produced in the region is much enough to cover the 10% of the annual oil consumption utilized for thermal applications. However, the cost of energy utilization of biomass is considerably high due to the high cost of the logistics concerning the collection, transport, and storage of biomass. The available utilization technologies developed, to handle efficiently all different species of biomass, cover a wide technological range. One of the most promising technologies involving thermal treatment of biomass and the production of a gaseous fuel (biogas for industrial heat applications and electricity production, is the thermo chemical conversion. In the present work, an investigation concerning biomass potential for energy production in the region of central Macedonia in Greece, utilizing several locally produced biomass species, is conducted. Emphasis is put on the energy utilization of agricultural by-products and residues. Agricultural sector is of great importance due to the considerably intensive agricultural activities in the region of Central Macedonia. .

  2. The Quantum Computing Conscious Universe and The Extended Deep Ecology Hypothesis: Implications for Medicine, Agriculture and Technology

    OpenAIRE

    Monendra Grover

    2011-01-01

    The human consciousness has been proposed to have several levels of consciousness, some of which are higher than others. I propose that the universe also has several levels of consciousness. To quantify the states of consciousness I propose the term consciousness vector. I further propose a extended deep ecology hypothesis which states that all human activity, including in the fields of medicine, agriculture and technology should be targeted so as to achieve the highest levels of consciousnes...

  3. THOUGHTS ON DEMONSTRATION AND SPREAD OF AGRICULTURAL SCIENCE AND TECHNOLOGY IN AGRICULTURAL SCIENTIFIC RESEARCH UNITS%农业科研单位对农业科技示范推广工作的认识与思考

    Institute of Scientific and Technical Information of China (English)

    佟瑞平; 耿东梅; 李云伏

    2011-01-01

    This article discussed the important role of agricultural scientific research unit in science and technology innovation and diversified agricultural technology service system, and how to correctly handle the relationship between scientific research and demonstration expansion, summarized the major methods in spreading agricultural technology in the units of agricultural scientific research, and put forward the main problems and work proposal.%文章论述了农业科研单位在科技创新和多元化农技推广服务体系的重要作用,以及如何正确处理科研与示范推广的关系等问题,总结了农业科研单位在农技推广的主要做法,并提出了主要问题和工作建议。

  4. Analysis of economic indicators for GPS technologies application in Agricultural Corporation Belgrade (PKB)

    OpenAIRE

    Marković, Dragan; Krstić, Dragan; Simonović, Vojislav; Marković, Ivana

    2012-01-01

    This paper examined the level of savings in the application of modern technical systems for satellite guidance and control over performing agricultural operations throughout the season. The exemplary property was Agricultural Corporation Belgrade (PKB), which covers about 21.000 hectares of arable land. The effects of plot shape and direction of movement of tractor-attachment units in calculating the savings from reduced overlapping of adjacent passes were studied. The analysis was carried ou...

  5. Making rainfed agriculture sustainable through environmental friendly technologies in Pakistan: A review

    Directory of Open Access Journals (Sweden)

    Mirza B. Baig

    2013-09-01

    Full Text Available Pakistan is an agricultural country spreading over an area of about 79. 6 million hectares (Mha with an arid and semi arid climate. Of 79. 6 Mha, about 23 Mha is suitable for crop production and nearly 25 percent of the total cultivated area is designated for rainfed agriculture. Unfortunately, rain-fed agriculture is constrained with multifarious problems such as moisture stress, soil erosion and crusting, nutrient deficiency, depletion and poor nutrient use efficiency, and weed infestation limiting the yield potential of these lands. In addition, deforestation and poor crop husbandry techniques are commonly noticed features. To meet the food requirements, farmers bring all the available pieces of lands under plough including steep slopes. Farming on steep slopes if not managed on scientific lines, results in severe erosion. The problems faced by the farmers are due to the unsustainable practices they adopt to practice dryland agriculture, limiting the productive potential of these important ecosystems. However, their potential can be improved by adopting suitable rainwater harvesting techniques; employing scientific soil and water conservation methods and using sustainable agricultural practices. This paper highlights some important issues associated with the rainfed agriculture of Pakistan. Working strategies for realizing optimum and sustainable yields have been outlined while conserving both land and water resources.

  6. 民用飞机预研项目存在问题及对策%Problems and Countermeasures in Advanced Research Projects for Civil Aircraft Technology

    Institute of Scientific and Technical Information of China (English)

    舒秀丽

    2015-01-01

    In this paper, three common problems are pointed out and dissected in advanced research projects for civil aircraft technology in China and three corresponding countermeasures being successfully implemented are pro-posed. These countermeasures are:establishment and application of innovation information repository supporting the setting-up of advanced research projects to reflect correct demand traction, effective formation and operation of the Integrated Project Team for effective project implementation and enhanced Technology Readiness Assessment promo-ting the application of research achievements. Good results of the application of the above-mentioned countermeas-ures are being achieved in the setting-up and implementation of three "serialized" advanced civil aircraft cockpit technology research projects, which break through the bottleneck of the advanced researches' leading and support-ing role to civil aircraft product development and provide a reference to advanced research projects in other indus-tries as well as in different civil aircraft technical fields.%指出我国民用飞机预研项目常见的三类问题并加以剖析,相应提出三项对策付诸实践:建创新信息库助正确需求牵引,组综合项目团队( IPT)助预研高效实施,抓技术成熟度评估( TRA)促研究成果应用. 上述对策在民用飞机驾驶舱技术领域三个系列化预研项目的立项和实施中显现成效,突破制约民用飞机预研引领和支撑民用飞机产品研发的瓶颈,可供民用飞机各技术领域和其他产业的预研项目借鉴.

  7. Effect of advanced aircraft noise reduction technology on the 1990 projected noise environment around Patrick Henry Airport. [development of noise exposure forecast contours for projected traffic volume and aircraft types

    Science.gov (United States)

    Cawthorn, J. M.; Brown, C. G.

    1974-01-01

    A study has been conducted of the future noise environment of Patric Henry Airport and its neighboring communities projected for the year 1990. An assessment was made of the impact of advanced noise reduction technologies which are currently being considered. These advanced technologies include a two-segment landing approach procedure and aircraft hardware modifications or retrofits which would add sound absorbent material in the nacelles of the engines or which would replace the present two- and three-stage fans with a single-stage fan of larger diameter. Noise Exposure Forecast (NEF) contours were computed for the baseline (nonretrofitted) aircraft for the projected traffic volume and fleet mix for the year 1990. These NEF contours are presented along with contours for a variety of retrofit options. Comparisons of the baseline with the noise reduction options are given in terms of total land area exposed to 30 and 40 NEF levels. Results are also presented of the effects on noise exposure area of the total number of daily operations.

  8. A paleo-aerodynamic exploration of the evolution of nature's flyers, man's aircraft, and the needs and options for future technology innovations

    Science.gov (United States)

    Kulfan, Brenda M.

    2009-03-01

    Insights and observations of fascinating aspects of birds, bugs and flying seeds, of inspired aerodynamic concepts, and visions of past, present and future aircraft developments are presented. The evolution of nature's flyers, will be compared with the corresponding evolution of commercial aircraft. We will explore similarities between nature's creations and man's inventions. Many critical areas requiring future significant technology based solutions remain. With the advent of UAVs and MAVs, the gap between "possible" and "actual" is again very large. Allometric scaling procedures will be used to explore size implications on limitations and performance capabilities of nature's creations. Biologically related technology development concepts including: bionics, biomimicry, neo-bionic, pseudo-mimicry, cybernetic and non-bionic approaches will be discussed and illustrated with numerous examples. Technology development strategies will be discussed along with the pros and cons for each. Future technology developments should include a synergistic coupling of "discovery driven", "product led" and "technology acceleration" strategies. The objective of this presentation is to inspire the creative nature existing within all of us. This is a summary all text version of the complete report with the same title that report includes approximately 80 figures, photos and charts and much more information.

  9. Lightning hazards to aircraft

    Science.gov (United States)

    Corn, P. B.

    1978-01-01

    Lightning hazards and, more generally, aircraft static electricity are discussed by a representative for the Air Force Flight Dynamics Laboratory. An overview of these atmospheric electricity hazards to aircraft and their systems is presented with emphasis on electrical and electronic subsystems. The discussion includes reviewing some of the characteristics of lightning and static electrification, trends in weather and lightning-related mishaps, some specific threat mechanisms and susceptible aircraft subsystems and some of the present technology gaps. A roadmap (flow chart) is presented to show the direction needed to address these problems.

  10. 信息传播技术与农业推广%Information Dissemination Technology and Agricultural Extension

    Institute of Scientific and Technical Information of China (English)

    杨书成; 杨振兴; 贾新宇

    2011-01-01

    简述了农业传播方式的分类、农业传播的变迁,着重分析了信息传播技术与农业推广相互沟通效果的途径、方案;指出农业推广人员要提高人际沟通能力,与农民相互学习,选择合适的传播方式和沟通渠道,并运用好创新扩散理论、团体规范和群体压力理论;最后提出信息传播技术与农业推广的现实意义.%The paper described the classification of the ways and the history of the agricultural spreading with emphysis on analysis of the information communication technology and communication way and effect. It was pointed out that it was highly necessary for the agricultural extension personnel to improve interpersonal communication ability, to leam from fanners, to choose appropriate mode of transmission and communication channels, to have a good use of innovation diffusion theory, group norms and group pressure theory. Besides, the current significance of agricultural information communication technology and the practical significance was proposed.

  11. Initiating rain water harvest technology for climate change induced drought resilient agriculture: scopes and challenges in Bangladesh

    Directory of Open Access Journals (Sweden)

    Hasan Muhammad Abdullah

    2015-12-01

    Full Text Available Bangladesh is primarily an agrarian economy. Agriculture is the single largest producing sector of the economy since it comprises about 18.6% of the country's GDP and employs around 45% of the total labor force. The performance of this sector has an overwhelming impact on major macroeconomic indicators like employment generation, poverty alleviation, human resource development and food security. The agriculture sector is extremely vulnerable to disaster and climate induced risks. Climate change is anticipated to aggravate the frequency and intensity of extreme weather events in Bangladesh. Drought is one of the major setbacks for the agriculture and its development. Therefore, disaster and climatic risk, especially drought management in agriculture is a major challenge for Bangladesh in achieving sustainable agricultural development. There are some regions in Bangladesh where every steps of agriculture from field preparation to ripening of crops dependents on rainfall. Consequently, drought affects annually 2.5 million ha in kharif (wet season and 1.2 million ha in dry season. Water is a natural resource with spatial scarcity and availability. Additionally, Cross-country anthropogenic activities caused a severe negative impact on water resources and eco-systems of Bangladesh in the recent years. The rivers and cannels dry up during the dry season and make the people completely dependent on groundwater (Abdullah, 2015. Accordingly the contribution of groundwater as a source of irrigation has increased and surface water has declined. It is now inevitable to look for alternate water source for agriculture. Water harvest technologies (WHTs can play an important role in this regard. WHTs can provide an additional source of water for crop production at the most critical stages of the growing season, thereby increasing yields and food security. The study is consists of drought scenario analysis, GIS based drought mapping and systematic literature

  12. Factors Influencing Agricultural Leadership Students' Behavioral Intentions: Examining the Potential Use of Mobile Technology in Courses

    Science.gov (United States)

    Strong, Robert; Irby, Travis L.; Dooley, Larry M.

    2013-01-01

    Mobile technology is pervasive at institutions across the U.S. The study was framed with self-efficacy theory, self-directed learning theory, and the unified theory for acceptance and use of technology. The purpose of this study was to assess undergraduate students' behavioral intention towards mobile technology acceptance in agricultural…

  13. THE USE OF CHEMICALS AS INSECTICIDES--PLANTS. AGRICULTURAL CHEMICALS TECHNOLOGY, NUMBER 2.

    Science.gov (United States)

    Ohio State Univ., Columbus. Center for Vocational and Technical Education.

    THIS GUIDE IS ONE OF A SERIES DESIGNED TO PROVIDE GROUP INSTRUCTION AND INDIVIDUAL OCCUPATIONAL EXPERIENCE FOR POST-SECONDARY STUDENTS PREPARING FOR EMPLOYMENT AS AGRICULTURAL CHEMICAL TECHNICIANS. IT WAS DEVELOPED BY A NATIONAL TASK FORCE ON THE BASIS OF STATE STUDY DATA. THE OBJECTIVES ARE TO DEVELOP (1) INTEREST, APPRECIATION, AND UNDERSTANDING…

  14. Explaining growth in Dutch agriculture: prices, public R&D, and technological change

    NARCIS (Netherlands)

    Jongeneel, R.A.; Ge, L.

    2005-01-01

    This paper analyzes the sources of growth of Dutch agriculture (arable, meat, and dairy sectors). Because the time series data (1950-1997) are non-stationary and not cointegrated, it is argued that a model estimated in first differences should be used. Estimated price elasticities turn out to be ver

  15. THE USE OF CHEMICALS AS FERTILIZERS. AGRICULTURAL CHEMICALS TECHNOLOGY, NUMBER 1.

    Science.gov (United States)

    Ohio State Univ., Columbus. Center for Vocational and Technical Education.

    THE PURPOSE OF THIS GUIDE IS TO ASSIST TEACHERS IN PREPARING POST-SECONDARY STUDENTS FOR AGRICULTURAL CHEMICAL OCCUPATIONS. ONE OF A SERIES OF EIGHT MODULES, IT WAS DEVELOPED BY A NATIONAL TASK FORCE ON THE BASIS OF DATA FROM STATE STUDIES. SUBJECT MATTER AREAS ARE (1) CHEMICAL NUTRITION OF PLANTS, (2) PLANT GROWTH, (3) TERMINOLOGY,…

  16. Low Energy Technology. A Unit of Instruction in Florida Agriculture. Crop Protection with Integrated Pest Management.

    Science.gov (United States)

    Florida Univ., Gainesville. Inst. of Food and Agricultural Sciences.

    This unit of instruction on integrated pest management was designed for use by agribusiness and natural resources teachers in Florida high schools and by agricultural extension agents as they work with adults and students. It is one of a series of 11 instructional units (see note) written to help teachers and agents to educate their students and…

  17. Improving access to big data in agriculture and forestry using semantic technologies

    NARCIS (Netherlands)

    Lokers, Rob; Randen, Van Yke; Knapen, Rob; Gaubitzer, Stephan; Zudin, Sergey; Janssen, Sander

    2015-01-01

    To better understand and manage the interactions of agriculture and natural resources, for example under current increasing societal demands and climate changes, agro-environmental research must bring together an ever growing amount of data and information from multiple science domains. Data that

  18. The Use of Future Internet Technologies in the Agriculture and Food Sectors: Integrating the Supply Chain

    NARCIS (Netherlands)

    Kaloxylos, A.; Wolfert, J.; Verwaart, T.; Maestre Terolc, C.; Brewster, C.; Robbemond, R.M.; Sundmaker, H.

    2013-01-01

    The Future Internet is expected to greatly influence how the food and agriculture sector is currently operating. In this paper, we present the specific characteristics of the agri-food sector focusing on how information management in this area will take place under a highly heterogeneous group of ac

  19. Beyond land application: Emerging technologies for the treatment and reuse of anaerobically digested agricultural and food waste.

    Science.gov (United States)

    Sheets, Johnathon P; Yang, Liangcheng; Ge, Xumeng; Wang, Zhiwu; Li, Yebo

    2015-10-01

    Effective treatment and reuse of the massive quantities of agricultural and food wastes generated daily has the potential to improve the sustainability of food production systems. Anaerobic digestion (AD) is used throughout the world as a waste treatment process to convert organic waste into two main products: biogas and nutrient-rich digestate, called AD effluent. Biogas can be used as a source of renewable energy or transportation fuels, while AD effluent is traditionally applied to land as a soil amendment. However, there are economic and environmental concerns that limit widespread land application, which may lead to underutilization of AD for the treatment of agricultural and food wastes. To combat these constraints, existing and novel methods have emerged to treat or reuse AD effluent. The objective of this review is to analyze several emerging methods used for efficient treatment and reuse of AD effluent. Overall, the application of emerging technologies is limited by AD effluent composition, especially the total solid content. Some technologies, such as composting, use the solid fraction of AD effluent, while most other technologies, such as algae culture and struvite crystallization, use the liquid fraction. Therefore, dewatering of AD effluent, reuse of the liquid and solid fractions, and land application could all be combined to sustainably manage the large quantities of AD effluent produced. Issues such as pathogen regrowth and prevalence of emerging organic micro-pollutants are also discussed. Copyright © 2015 Elsevier Ltd. All rights reserved.

  20. Comparative assessment of agricultural technology generating practices in universities and research institutes in north central zone of Nigeria

    Directory of Open Access Journals (Sweden)

    Gbolagade Benjamin Adesiji

    2017-06-01

    Full Text Available To understand the technology generating practices among universities and research institutes in north central zone of Nigeria, this study examined sources of funds for technology generating activities, compared agro-technology generating practices and identified constraining factors hindering technology generating practices. One hundred and fifty-two academic staff were randomly selected from universities and one hundred and thirty-six respondents were drawn from research institutes. Validated questionnaires with reliability coefficient of r = 0.92 were used to elicit data. Data were analyzed using descriptive statistics, Likert-scale, T-test and Factor analysis. Majority (93.4% of universities’ respondents used their personal funds to generate new technology compared to their counterparts in research institutes. The most widely employed mechanism for generating agricultural technologies was joint radio programmes (mean = 3.38 while the least was biotechnology (mean = 2.57. Major areas of differences in technology generation between the two institutions were the physical distance (t = 13.54; P < 0.05, farmers participation in field research trials (t = 8.50; P < 0.05, farmers co-finance of adaptive research trials (t = 3.77; P < 0.05 and adequate research facilities and incentives to workers (t = 2.05; P < 0.05. Factors constraining technology generation for universities were poor access to knowledge and information on new innovation (r = 0.815 while for research institutes it was limited physical resources (ICT, Telephone (r = 0.801. It was recommended therefore that respondents should look into options of writing alternate fund proposals and submitting to a wider range of funding bodies. Governance of innovation could be strengthened through the formation of a formal technological linkage advisory council.

  1. Scientific Research Program for Power, Energy, and Thermal Technologies. Task Order 0001: Energy, Power, and Thermal Technologies and Processes Experimental Research. Subtask: Thermal Management of Electromechanical Actuation System for Aircraft Primary Flight Control Surfaces

    Science.gov (United States)

    2014-05-01

    commercial aircraft utilize a cable and pulley scheme. In both setups, trim units, feel units, and power control units (PCUs) provide the pilot with...drives a mechanical transmission typically made up of a reduction gear box and a ball/roller screw (linear actuator) or flanged housing (rotary hinge... gear box or ball screw mechanism. Therefore it becomes the point of interest for TMS adaption. Current EMAS technology employs permanent magnet

  2. Ammonia Emissions from the Agriculture Sector of Argentina in a Context of Changing Technologies and Practices

    Science.gov (United States)

    Dawidowski, L. E.

    2015-12-01

    Agriculture is a key sector of the Argentinean economy, accounting for 6 to 8 5% of the GDP in the last ten years. Argentina switched in the 90´s from an articulated co-evolution between extensive livestock and crop farming, with annual rotation of crops and livestock, to intensive decoupled practices. Under these new production schemes, ecosystems were supplied with more nutrients, generating increasing levels of wastes. Other changes have also occurred, associated with the shift of the agricultural frontier and the consequent reduction in the cattle stock. In addition, changes related to climate through the strong increase in rainfall in the 80s and 90s in the west Pampas, helped to boost agricultural development. The agriculture sector accounts for practically all NH3 emissions in Argentina, however no inventory has been thus far available. To bridge this gap and particularly to have accurate input information to run coupled atmospheric chemistry models for secondary inorganic aerosols, we estimated 2000-2012 NH3 emissions, both at national and spatially disaggregated levels. Of particular interest for us was also temporal disaggregation as crops growing and temperature exhibit strong seasonal variability. As no NH3 inventory was available we also estimated related N2O emissions to verify our estimates with those of national GHG emission inventory (NEI). National NH3 emissions in 2012 amounted to 309.9 Gg, use of fertilizers accounted for 43.6%, manure management 18,9%, manure in pasture 36,0% and agricultural waste burning 1.5%. Our N2O estimates are in good agreement with the GHG-NEI. NH3 estimates in the EDGAR database for 2008 are 84.0% higher than ours for this year, and exhibit more significant differences per category, namely 113,6% higher for use of fertilizers and about 500% higher for agricultural waste burning. Urea dominates national NH3 emissions, accounting for 32,8% of the total and its use for wheat and corn crops dominates the trend.

  3. Farmers’ Behaviors on Agricultural Technology Inputs and the Influencing Factors of Their Behaviors——Based on the Investigation of 276 Rural Households in Deyang City, Sichuan Province

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    On the basis of expounding farmers’ behaviors on agricultural technology inputs studied by the foreign scholars; relying on the investigation data of 276 rural households in Deyang City, Sichuan Province and by using the Logistic Regression model, the farmers’ behaviors on agricultural technology inputs and the influencing factors on their behaviors are analyzed. The results show the main factors that influence farmers; behaviors on agricultural inputs are whether they have the assistance of agricultural technology personnel; the choices of plantation; non-agricultural income; area of land management; the expectation on land ownership, whether it has township enterprises and the proportion of the non-agricultural labor forces and some other factors. The influencing degree of these factors descends from strong to weak. On the strength of the study results, the countermeasures on increasing local farmers’ inputs on agricultural technology are put forward from the aspects of stabilizing rural land property, establishing scientific land transfer mechanism and intensifying the governmental functions of agro-technical station.

  4. [Application of THz technology to nondestructive detection of agricultural product quality].

    Science.gov (United States)

    Jiang, Yu-ying; Ge, Hong-yi; Lian, Fei-yu; Zhang, Yuan; Xia, Shan-hong

    2014-08-01

    With recent development of THz sources and detector, applications of THz radiation to nondestructive testing and quality control have expanded in many fields, such as agriculture, safety inspection and quality control, medicine, biochemistry, communication etc. Compared with other detection technique, being a new kind of technique, THz radiation has low energy, good perspectivity, and high signal-to-noise ratio, and thus can obtain physical, chemical and biological information. This paper first introduces the basic concept of THz radiation and the major properties, then gives an extensive review of recent research progress in detection of the quality of agricultural products via THz technique, analyzes the existing shortcomings of THz detection and discusses the outlook of potential application, finally proposes the new application of THz technique to detection of quality of stored grain.

  5. Agriculture Teachers’ Use of Interactive Whiteboards (IWBs: Teachers’ Perceptions of Innovativeness and Technology Integration

    Directory of Open Access Journals (Sweden)

    J. C. Bunch

    2015-02-01

    Full Text Available The purpose of this descriptive-correlational study was to assess the level of innovativeness of Oklahoma secondary agricultural education teachers regarding their use of the interactive whiteboard (IWB. The study also sought to determine if relationships existed between teachers’ IWB innovativeness scores and selected personal and professional characteristics. The findings of this study revealed that as a teacher’s age and years of teaching experience increased, his or her perceived level of innovativeness regarding use of interactive whiteboards (IWBs decreased. Therefore, younger and less experienced teachers were further advanced in Rogers’s (2003 innovation-decision process. In addition, this study found that a majority of the agriculture teachers were in the implementation and confirmation stages of the innovation-decision process. Implications and recommendations point to creating professional development experiences for teachers in the knowledge and persuasion stages of the innovation-decision process to learn about effective use of IWBs, to acquire procedural or “how-to” knowledge of the IWB, and to have opportunities to practice using it. Additional research should examine how the use of IWBs affects student learning and achievement in school-based agricultural education.

  6. Applications and Case Studies of the Next-Generation Sequencing Technologies in Food, Nutrition and Agriculture.

    Science.gov (United States)

    Next-generation sequencing technologies are able to produce high-throughput short sequence reads in a cost-effective fashion. The emergence of these technologies has not only facilitated genome sequencing but also changed the landscape of life sciences. Here I survey their major applications ranging...

  7. Technologies of the '80s: Their Impact on Vocational Agriculture Occupations.

    Science.gov (United States)

    Jaffe, J. A., Ed.; And Others

    This report is one of seven that identify major new and emerging technological advances expected to influence major vocational education program areas and to describe the programmatic implications in terms of skill-knowledge requirements, occupations most directly affected, and the anticipated diffusion rate. Chapter 1 considers technology as…

  8. 农业信息技术与精确农业的发展%Development of Agricultural Information Technology and Precision Agriculture

    Institute of Scientific and Technical Information of China (English)

    彭望禄; PierreRobert

    2001-01-01

    介绍了美国精确农业发展现状及当前进行的主要工作,阐述精确农业就是信息农业的概念。着重介绍SSCM(根据田间具体情况作物管理系统)系统和YieldMap产量图在精确农业发展中的作用及GIS与精确农业的不可分关系%This paper describes the status of development of precision agriculture in the US and the profile of precision agriculture center. From these the concept of precision agriculture that precision agriculture is information agriculture is emphasized. The site-specific crop management and yield map analysis are important to precision agriculture. Geographic information system has close relation with precision agriculture. Finally, the recent issues of precision agriculture are listed. All above will likely be helpful for the development of precision agriculture in China.

  9. Development and demonstration of energy saving technologies in agriculture; Udvikling og demonstration af energibesparende teknologi til landbruget

    Energy Technology Data Exchange (ETDEWEB)

    Pedersen, Joergen; Trenel, P.; Krogh Hansen, T.; Andersen, Mathias

    2010-07-01

    The energy consumption for agriculture is approx. 10% of the total corporate energy use in Denmark and is therefore a major source of total CO2 emission. This project aims to show that there is great potential for reducing energy use in agriculture. The project focused on saving energy in pig production, as this is the largest branch of production in farming and also the most energy consuming. The energy consumption in selected herds has been monitored with high accuracy making it possible to track down energy consumption, on system level, minute by minute. The energy consumption for light, ventilation and heating systems has been followed in various sections of different farms to compare the level of consumption. In the project 4 technologies were developed and tested. The results are: 1) Two new EC (electronically commuted) fans for livestock facilities makes it possible to reduce power consumption for ventilation with over 50% compared with frequency controlled fans; 2) An intelligent shelter for two climate stables was developed to regulate heat in the piglet pens. The system showed a 43% energy saving for heating compared to identical climate stables with normal floor heating; 3) An hour-based energy management system called Elspot was tested. The Elspot module can automatically activate and deactivate electrically powered equipment according to the energy price. The study found that farms can reduce their spending on electricity by 25% using the Elspot module on a feed mill; 4) A web interface for energy monitoring was designed specifically for farmers. This system makes it possible for farmers to monitor their energy consumption at and benchmark this against normative values or new technologies. The initial goal of the project was to develop and demonstrate solutions that could potentially reduce energy consumption in agriculture by 20%. Since the work was done only with energy saving technologies in livestock production, this corresponds to an energy

  10. Ascendancy of agricultural biotechnology in the Australian political mainstream coexists with technology criticism by a vocal-minority

    Science.gov (United States)

    Tribe, David

    2014-01-01

    Australia is a federation of States. This political structure necessitates collaborative arrangements between Australian governments to harmonize national regulation of gene technology and food standards. Extensive political negotiation among institutions of federal government has managed regulation of GM crops and food. Well-developed human resources in Australian government provided numerous policy documents facilitating a transparent political process. Workable legislation has been devised in the face of criticisms of gene technology though the political process. Conflicts between potential disruptions to food commodity trade by precautionary proposals for environmental protection were one cause of political tensions, and differences in policy priorities at regional political levels versus national and international forums for negotiation were another. Australian policy outcomes on GM crops reflect (a) strong economic self-interest in innovative and productive farming, (b) reliance on global agricultural market reforms through the Cairns trade group and the WTO, and (c) the importance of Codex Alimentarius and WTO instruments SPS and TBT. Precautionary frameworks for GM food safety assurance that are inconsistent with WTO obligations were avoided in legislation. Since 2008 the 2 major parties, Australian Labor Party (ALP) and the Liberals appear to have reached a workable consensus at the Federal policy level about an important role for agricultural biotechnology in Australia's economic future. PMID:25437242

  11. Ascendancy of agricultural biotechnology in the Australian political mainstream coexists with technology criticism by a vocal-minority.

    Science.gov (United States)

    Tribe, David

    2014-07-01

    Australia is a federation of States. This political structure necessitates collaborative arrangements between Australian governments to harmonize national regulation of gene technology and food standards. Extensive political negotiation among institutions of federal government has managed regulation of GM crops and food. Well-developed human resources in Australian government provided numerous policy documents facilitating a transparent political process. Workable legislation has been devised in the face of criticisms of gene technology though the political process. Conflicts between potential disruptions to food commodity trade by precautionary proposals for environmental protection were one cause of political tensions, and differences in policy priorities at regional political levels versus national and international forums for negotiation were another. Australian policy outcomes on GM crops reflect (a) strong economic self-interest in innovative and productive farming, (b) reliance on global agricultural market reforms through the Cairns trade group and the WTO, and (c) the importance of Codex Alimentarius and WTO instruments SPS and TBT. Precautionary frameworks for GM food safety assurance that are inconsistent with WTO obligations were avoided in legislation. Since 2008 the 2 major parties, Australian Labor Party (ALP) and the Liberals appear to have reached a workable consensus at the Federal policy level about an important role for agricultural biotechnology in Australia's economic future.

  12. The sustainability of changes in agricultural technology: The carbon, economic and labour implications of mechanisation and synthetic fertiliser use.

    Science.gov (United States)

    Gathorne-Hardy, Alfred

    2016-12-01

    New agricultural technologies bring multiple impacts which are hard to predict. Two changes taking place in Indian agriculture are a transition from bullocks to tractors and an associated replacement of manure with synthetic fertilisers. This paper uses primary data to model social, environmental and economic impacts of these transitions in South India. It compares ploughing by bullocks or tractors and the provision of nitrogen from manure or synthetic urea for irrigated rice from the greenhouse gas (GHG), economic and labour perspective. Tractors plough nine times faster than bullocks, use substantially less labour, with no significant difference in GHG emissions. Tractors are twice as costly as bullocks yet remain more popular to hire. The GHG emissions from manure-N paddy are 30 % higher than for urea-N, largely due to the organic matter in manure driving methane emissions. Labour use is significantly higher for manure, and the gender balance is more equal. Manure is substantially more expensive as a source of nutrients compared to synthetic nutrients, yet remains popular when available. This paper demonstrates the need to take a broad approach to analysing the sustainability impacts of new technologies, as trade-offs between different metrics are common.

  13. Adoption of precision agriculture technologies in India and in some developing countries: Scope, present status and strategies

    Institute of Scientific and Technical Information of China (English)

    Pinaki Mondal; Manisha Basu

    2009-01-01

    Rapid socio-economic changes in some developing countries, including India, are creating new scopes for application of precision agriculture (PA). The implications of dramatic shifts for economic development, urbanization and energy consumption in some devel-oping countries are immense. High-tech nature of traditional PA technologies developed in advanced countries created a real challenge for engineers to search suitable PA technologies for developing countries. It is expected that application of balanced soft and hard PA technologies based on the need of specific socio-economic condition of a country will make PA suitable for developing countries also. 'Soft' PA depends mainly on visual observation of crop and soil and management decision based on experience and intuition, rather than on statistical and scientific analysis. 'Hard' PA utilizes all modern technologies such as GPS, RS, and VRT. Three components, namely, 'single PA technology', 'PA technology package' (for the user to select one or combination) and 'integrated PA technology', have been identified as a part of adoption strategies of PA in the developing countries. Therefore, the objective of this paper is to find out the scope, the present status and the strategies for adoption of PA in India and in some developing countries. Application of PA in cash crop, plan-tation crop, etc. has been discussed. Application of some medium and low-tech PA tools such as chlorophyll meter and leaf colour chart. in small farms has been included. This exhaustive review of the present status of PA in India and in some developing countries is expected to help to find out the adoption trend and direction of future research. Detailed strategy for the adoption of PA in India has also been proposed.

  14. Aircraft Carriers

    DEFF Research Database (Denmark)

    Nødskov, Kim; Kværnø, Ole

    There are many indications that China is actively researching the design of an aircraft carrier. It is unknown whether China will initiate the actual acquisition of a carrier, but the indications that are available of their research into aircraft carriers and carrier-capable aircraft, as well...... as their purchases of aircraft carrier systems, makes it more than likely that the country is preparing such an acquisition. China has territorial disputes in the South China Sea over the Spratly Islands and is also worried about the security of its sea lines of communications, by which China transports the majority...... of its foreign trade, as well as its oil imports, upon which the country is totally dependent. China therefore has good reasons for acquiring an aircraft carrier to enable it to protect its national interests. An aircraft carrier would also be a prominent symbol of China’s future status as a great power...

  15. Aircraft Operations Classification System

    Science.gov (United States)

    Harlow, Charles; Zhu, Weihong

    2001-01-01

    Accurate data is important in the aviation planning process. In this project we consider systems for measuring aircraft activity at airports. This would include determining the type of aircraft such as jet, helicopter, single engine, and multiengine propeller. Some of the issues involved in deploying technologies for monitoring aircraft operations are cost, reliability, and accuracy. In addition, the system must be field portable and acceptable at airports. A comparison of technologies was conducted and it was decided that an aircraft monitoring system should be based upon acoustic technology. A multimedia relational database was established for the study. The information contained in the database consists of airport information, runway information, acoustic records, photographic records, a description of the event (takeoff, landing), aircraft type, and environmental information. We extracted features from the time signal and the frequency content of the signal. A multi-layer feed-forward neural network was chosen as the classifier. Training and testing results were obtained. We were able to obtain classification results of over 90 percent for training and testing for takeoff events.

  16. Applying an Enhanced Technology Acceptance Model to Knowledge Management in Agricultural Extension Services

    OpenAIRE

    Olusegun Folorunso; Shawn Oluwafemi Ogunseye

    2008-01-01

    This research investigates the applicability of Davis's Technology Acceptance Model (TAM) to agriculturist's acceptance of a knowledge management system (KMS), developed by the authors. It is called AGROWIT. Although the authors used previous Technology Acceptance Model user acceptance research as a basis for investigation of user acceptance of AGROWIT, the model had to be extended and constructs from the Triandis model that were added increased the predictive results of the TAM, but only sli...

  17. Survey of the World Agricultural Documentation Services, Draft; Prepared on Behalf of the FAO Panel of Experts on "AGRIS" (International Information System for the Agricultural Sciences and Technology).

    Science.gov (United States)

    Buntrock, H.

    The purpose of the survey was: (1) to evaluate existing agricultural information services and (2) to propose possible frameworks for an improved world-wide agricultural information service. The principal statistical results of the survey are summarized in the following figures which are based on data collected in nearly all instances for the year…

  18. The Design and Realization of Agricultural Technology Information Database%农业知识库的设计与实现

    Institute of Scientific and Technical Information of China (English)

    金钟明; 李永可; 李悦

    2014-01-01

    通过对数据库技术及农业信息分类技术的研究,设计农业知识数据库结构,并开发农业知识采集系统,为农业知识采集提供录入接口。农业知识库的设计为农业知识检索系统开发奠定基础。实际应用证明,该知识库为农业信息检索系统开发提供了很好的支持。%Through the research on database technology and techniques for classification of agricultural information, designing the structure of agricultural technology database and developing the agricultural information acquisition system, provides the in⁃put interface for the agricultural knowledge acquisition. The design of agricultural database building a foundation for the develop⁃ing of agricultural knowledge retrieval system. The practical application proves that, the agricultural knowledge database provid⁃ing a good support for the development of agricultural information retrieval system.

  19. Applications of Information and Communication Technology for Improvements of Water and Soil Monitoring and Assessments in Agricultural Areas—A Case Study in the Taoyuan Irrigation District

    Directory of Open Access Journals (Sweden)

    Yu-Pin Lin

    2017-01-01

    Full Text Available In order to guarantee high-quality agricultural products and food safety, efforts must be made to manage and maintain healthy agricultural environments under the myriad of risks that they face. Three central system components of sustainable agricultural management schemes are real-time monitoring, decision-making, and remote access. Information and Communications Technology (ICT systems are a convenient means of providing both these and other functions, such as wireless sensor networking, mobile phone applications, etc., to agricultural management schemes. ICT systems have significantly improved in recent years and have been widely used in many fields, including environmental monitoring and management. Moreover, ICT could benefit agricultural environment management by providing a platform for collaboration between researchers and stakeholders, thereby improving agricultural practices and environments. This article reviews and discusses the way in which ICT can efficiently improve monitoring systems and risk assessments of agricultural environment monitoring, as well as the technological and methodological improvements of ICT systems. Finally, we develop and apply an ICT system, referred to as the agricultural environment protection system—comprised of a cloud, six E-platforms, three mobile devices, automatic monitoring devices, indigenous wireless sensor nodes, and gateways in agricultural networks—to a case study in the Taoyuan irrigation district, which acts as a pilot area in Taiwan. Through the system, we use all available information from the interdisciplinary structured cloud database to classify the focal area into different agricultural environmental risk zones. We also conducted further analysis based on a hierarchical approach in order to classify the agricultural environments in the study area, to allocate additional sampling with resin packages and mobile devices, as well as to assist decision makers and stakeholders. The main

  20. Tongwei agricultural machinery popularization and application of new technology%通渭县农业机械新技术的推广与应用

    Institute of Scientific and Technical Information of China (English)

    牛鹏翼

    2014-01-01

    在农业现代化的发展过程中,农业机械是推动农业现代化的重要因素,是增强农业综合竞争力、实现农业产业升级的关键一环。甘肃省通渭县在农业发展过程中,大力推进农业机械的现代化程度,结合地区实际情况,不断引进与吸收新型农业技术,实现了农业机械化的快速发展。文章着眼通渭县农业机械应用现状,分析了农业机械新技术推广面临的问题,并进一步提出了解决措施。%In the process of the development of agricultural modernization, agricultural machinery is an important factor in promoting agricultural modernization, is to enhance comprehensive competitiveness of agriculture and realize a key link of agricultural industry upgrading. Author in gansu province in the process of agricultural development, promote the modernization of agricultural machinery, in combination with the practical situation of area, constantly introduce and absorb the new agricultural technology, has realized the rapid development of agricultural mechanization. Tongwei agricul-tural machinery application situation, analyzing the problem faced by the agricultural machinery technology promotion, and further puts forward the solutions.

  1. NASA-UVA Light Aerospace Alloy and Structure Technology Program Supplement: Aluminum-Based Materials for High Speed Aircraft

    Science.gov (United States)

    Starke, E. A., Jr.

    1997-01-01

    This is the final report of the study "Aluminum-Based Materials for High Speed Aircraft" which had the objectives (1) to identify the most promising aluminum-based materials with respect to major structural use on the HSCT and to further develop those materials and (2) to assess the materials through detailed trade and evaluation studies with respect to their structural efficiency on the HSCT. The research team consisted of ALCOA, Allied-Signal, Boeing, McDonnell Douglas, Reynolds Metals and the University of Virginia. Four classes of aluminum alloys were investigated: (1) I/M 2XXX containing Li and I/M 2XXX without Li, (2) I/M 6XXX, (3) two P/M 2XXX alloys, and (4) two different aluminum-based metal matrix composites (MMC). The I/M alloys were targeted for a Mach 2.0 aircraft and the P/M and MMC alloys were targeted for a Mach 2.4 aircraft. Design studies were conducted using several different concepts including skin/stiffener (baseline), honeycomb sandwich, integrally stiffened and hybrid adaptations (conventionally stiffened thin-sandwich skins). Alloy development included fundamental studies of coarsening behavior, the effect of stress on nucleation and growth of precipitates, and fracture toughness as a function of temperature were an integral part of this program. The details of all phases of the research are described in this final report.

  2. Biotechnology and the developing world. Finding ways to bridge the agricultural technology gap.

    Science.gov (United States)

    Platais, K W; Collinson, M P

    1992-03-01

    Biotechnology is a controversial subject that involves a range of scientific principles from basic tissue culture to genetic manipulation. Proponents include private sector capitalists, public sector researchers, and developing nation governments. Opponents include environmental organizations and social organizations involved in protecting the rights of developing nations. Biotechnology is being presented as the next step after the Green Revolution and the only way that the people of the developing world will be able to feed themselves in the next half century. Research by industrialized nations world wide total an estimated $11 billion with 66% being contributed by the private sector. Biotechnology represents somewhat of a dilemma. Since the majority of the work is being done by the private sector the interests of shareholders and profit are greater done by the private sector the interests of shareholders and profit are greater than that of public welfare or safety. The Consultative Group on International Agricultural Research (CGIAR) is one public sector group that is concerned about this problem. The countries of the developing world fall into 2 categories in relation to use of biotechnology: (1) those that have the potential to adapt imported biotechnologies to local conditions; (2) those that have little or no applied research capacity to effectively use biotechnologies. Currently only Brazil, China, India, and Thailand belong in the 1st category, all other developing countries fall into the 2nd. CGIAR believes it can help in 2 ways: (1) it can provide a bridge for needed information and germplasm between developed and developing countries; (2) it can help to ensure that the agricultural needs of developing countries are not lost. In 1990 CGIAR's plant and animal biotechnology research totaled $14.5 million which was less than 5% of the total CGIAR budget. Networking and institutions building are areas that CGIAR focuses on in an attempt to increase its affect

  3. Trends in multi-pollutant emissions from a technology-linked inventory for India: II. Residential, agricultural and informal industry sectors

    Science.gov (United States)

    Pandey, Apoorva; Sadavarte, Pankaj; Rao, Anand B.; Venkataraman, Chandra

    2014-12-01

    Dispersed traditional combustion technologies, characterized by inefficient combustion and significant emissions, are widely used in residential cooking and "informal industries" including brick production, food and agricultural product processing operations like drying and cooking operations related to sugarcane juice, milk, food-grain, jute, silk, tea and coffee. In addition, seasonal agricultural residue burning in field is a discontinuous source of significant emissions. Here we estimate fuel consumption in these sectors and agricultural residue burned using detailed technology divisions and survey-based primary data for 2010 and projected between 1996 and 2015. In the residential sector, a decline in the fraction of solid biomass users for cooking from 79% in 1996 to 65% in 2010 was offset by a growing population, leading to a nearly constant population of solid biomass users, with a corresponding increase in the population of LPG users. Emissions from agriculture followed the growth in agricultural production and diesel use by tractors and pumps. Trends in emissions from the informal industries sector followed those in coal combustion in brick kilns. Residential biomass cooking stoves were the largest contributors to emissions of PM2.5, OC, CO, NMVOC and CH4. Highest emitting technologies of BC were residential kerosene wick lamps. Emissions of SO2 were largely from coal combustion in Bull's trench kilns and other brick manufacturing technologies. Diesel use in tractors was the major source of NOx emissions. Uncertainties in emission estimates were principally from highly uncertain emission factors, particularly for technologies in the informal industries.

  4. Predicting E-Learning Application in Agricultural Higher Education Using Technology Acceptance Model

    Science.gov (United States)

    Rezaei, Masoud; Mohammadi, Hamid Movahed; Asadi, Ali; Kalantary, Khalil

    2008-01-01

    E-learning is significant breakthrough in teaching and learning. Internet or web technologies are important because they facilitate and enhance communications among instructors and learners and provide tools to encourage creativity and initiative. If internet-based learning environments are to benefit students, then it is important from the…

  5. Aircraft Design

    Science.gov (United States)

    Bowers, Albion H. (Inventor); Uden, Edward (Inventor)

    2016-01-01

    The present invention is an aircraft wing design that creates a bell shaped span load, which results in a negative induced drag (induced thrust) on the outer portion of the wing; such a design obviates the need for rudder control of an aircraft.

  6. Improving livestock for agriculture - technological progress from random transgenesis to precision genome editing heralds a new era.

    Science.gov (United States)

    Laible, Götz; Wei, Jingwei; Wagner, Stefan

    2015-01-01

    Humans have a long history in shaping the genetic makeup of livestock to optimize production and meet growing human demands for food and other animal products. Until recently, this has only been possible through traditional breeding and selection, which is a painstakingly slow process of accumulating incremental gains over a long period. The development of transgenic livestock technology offers a more direct approach with the possibility for making genetic improvements with greater impact and within a single generation. However, initially the technology was hampered by technical difficulties and limitations, which have now largely been overcome by progressive improvements over the past 30 years. Particularly, the advent of genome editing in combination with homologous recombination has added a new level of efficiency and precision that holds much promise for the genetic improvement of livestock using the increasing knowledge of the phenotypic impact of genetic sequence variants. So far not a single line of transgenic livestock has gained approval for commercialization. The step change to genome-edited livestock with precise sequence changes may accelerate the path to market, provided applications of this new technology for agriculture can deliver, in addition to economic incentives for producers, also compelling benefits for animals, consumers, and the environment.

  7. Suppression of Ammonia Volatilization from Urea-Based Fertilizers Using Urease Inhibitors: A Reasonably Available Control Technology for Agriculture?

    Science.gov (United States)

    Robarge, W. P.

    2015-12-01

    Ammonia loss from fertilizers can impact formation of atmospheric aerosols, as well as contribute to nitrogen (N) deposition in terrestrial and aquatic ecosystems. Urea is the predominant form of N fertilizer used worldwide due to its high N content (46.6% N) and low cost. Once in contact with soil or vegetation, urea is hydrolyzed to ammonium via naturally occurring urease enzymes. Losses of N from surface applied urea as ammonia can exceed 30%. To address this issue, various physical and chemical mechanisms have been incorporated into granular urea. The most common approach is incorporation of urease inhibitors such as N-(n-butyl) thiophosphoric triamide (NBPT). We have been investigating ammonia volatilization from urea granules (+/- urease inhibitors) in various field and laboratory controlled experiments for the past several years. Laboratory experiments are conducted with a customized growth chamber system designed to continuously measure ammonia volatilization. Field measurements are conducted using a passive sampler technology with an acid-coated trap in PVC cylinders, or annular denuder technology using flow-through PVC chambers. Daily exchanges of acid-coated denuder tubes enhance the sensitivity of ammonia volatilization measurements for the urease-inhibitor treated product. Loss of N from commercial urea granules has ranged from 6 - ~ 35%, depending on ambient temperature. This loss typically occurs within the first 5-10 days under field conditions. Some urease-inhibitors can minimize loss of N via volatilization (technology for use in agriculture to reduce ammonia emissions.

  8. High-Throughput 3-D Monitoring of Agricultural-Tree Plantations with Unmanned Aerial Vehicle (UAV) Technology.

    Science.gov (United States)

    Torres-Sánchez, Jorge; López-Granados, Francisca; Serrano, Nicolás; Arquero, Octavio; Peña, José M

    2015-01-01

    The geometric features of agricultural trees such as canopy area, tree height and crown volume provide useful information about plantation status and crop production. However, these variables are mostly estimated after a time-consuming and hard field work and applying equations that treat the trees as geometric solids, which produce inconsistent results. As an alternative, this work presents an innovative procedure for computing the 3-dimensional geometric features of individual trees and tree-rows by applying two consecutive phases: 1) generation of Digital Surface Models with Unmanned Aerial Vehicle (UAV) technology and 2) use of object-based image analysis techniques. Our UAV-based procedure produced successful results both in single-tree and in tree-row plantations, reporting up to 97% accuracy on area quantification and minimal deviations compared to in-field estimations of tree heights and crown volumes. The maps generated could be used to understand the linkages between tree grown and field-related factors or to optimize crop management operations in the context of precision agriculture with relevant agro-environmental implications.

  9. High-Throughput 3-D Monitoring of Agricultural-Tree Plantations with Unmanned Aerial Vehicle (UAV Technology.

    Directory of Open Access Journals (Sweden)

    Jorge Torres-Sánchez

    Full Text Available The geometric features of agricultural trees such as canopy area, tree height and crown volume provide useful information about plantation status and crop production. However, these variables are mostly estimated after a time-consuming and hard field work and applying equations that treat the trees as geometric solids, which produce inconsistent results. As an alternative, this work presents an innovative procedure for computing the 3-dimensional geometric features of individual trees and tree-rows by applying two consecutive phases: 1 generation of Digital Surface Models with Unmanned Aerial Vehicle (UAV technology and 2 use of object-based image analysis techniques. Our UAV-based procedure produced successful results both in single-tree and in tree-row plantations, reporting up to 97% accuracy on area quantification and minimal deviations compared to in-field estimations of tree heights and crown volumes. The maps generated could be used to understand the linkages between tree grown and field-related factors or to optimize crop management operations in the context of precision agriculture with relevant agro-environmental implications.

  10. Agricultural Technology Extension of India and Inspiration to China%印度的农业技术推广及对我国的启示

    Institute of Scientific and Technical Information of China (English)

    刘冬梅; 李俊杰

    2013-01-01

      印度与中国在农业发展上较为相似,印度在建立农业技术推广体系过程中的成功之处和遇到的问题对我国具有参考价值。本文详细阐述了印度主要的农业推广主体及其在农业推广中发挥的作用,分析了印度农业技术推广中存在的主要问题,并提出了完善我国农业技术推广体系的建议。%The agriculture development of China is similar with India's. India's successes and the problems in the process of establishment of agricultural technology popularization system have reference to China. The paper was expounded main agri-cultural extension body and its role to play in agricultural extension, and analyzed the main problems in the Indian agricul-tural technology promotion. Finally, the paper was put forward suggestions of improving agricultural technology popularization system of China.

  11. The Quantum Computing Conscious Universe and The Extended Deep Ecology Hypothesis: Implications for Medicine, Agriculture and Technology

    Directory of Open Access Journals (Sweden)

    Monendra Grover

    2011-02-01

    Full Text Available The human consciousness has been proposed to have several levels of consciousness, some of which are higher than others. I propose that the universe also has several levels of consciousness. To quantify the states of consciousness I propose the term consciousness vector. I further propose a extended deep ecology hypothesis which states that all human activity, including in the fields of medicine, agriculture and technology should be targeted so as to achieve the highest levels of consciousness of the universe (or the highest magnitude of the consciousness vector. The elementary particles have been proposed to have consciousness which is “lost” in bigger chunks of non living mater due to quantum decoherence. The non-living matter may also become quantum coherent in the higher states of consciousness of the universe. Thus I envisage that higher levels of consciousness of universe would include non living matter which may become conscious in the described state of consciousness of universe.

  12. Welfare Effects of Agricultural Technology adoption: the case of improved groundnut varieties in rural Malawi

    OpenAIRE

    Simtowe, Franklin; Kassie, Menale; Asfaw, Solomon; Shiferaw, Bekele A.; Monyo, Emmanuel; Siambi, Moses

    2012-01-01

    This paper applies a program evaluation technique to assess the causal effect of the adoption of improved groundnut technologies on consumption expenditure and poverty measured by headcount, poverty gap and poverty severity indices. The paper is based on a cross-sectional farm household level data collected in 2008 from a sample of 594 households in rural Malawi. A sensitivity analysis is conducted to test the robustness of the propensity score based results using the rbounds test and the mea...

  13. Genetically modified crops: the fastest adopted crop technology in the history of modern agriculture

    OpenAIRE

    2012-01-01

    Abstract The major scientific advances of the last century featured the identification of the structure of DNA, the development of molecular biology and the technology to exploit these advances. These breakthroughs gave us new tools for crop improvement, including molecular marker-aided selection (MAS) and genetic modification (GM). MAS improves the efficiency of breeding programs, and GM allows us to accomplish breeding objectives not possible through conventional breeding approaches. MAS is...

  14. Analyses of Aircraft Responses to Atmospheric Turbulence

    OpenAIRE

    Van Staveren, W.H.J.J.

    2003-01-01

    The response of aircraft to stochastic atmospheric turbulence plays an important role in aircraft-design (load calculations), Flight Control System (FCS) design and flight-simulation (handling qualities research and pilot training). In order to simulate these aircraft responses, an accurate mathematical model is required. Two classical models will be discussed in this thesis, that is the Delft University of Technology (DUT) model and the Four Point Aircraft (FPA) model. Although they are well...

  15. Agricultural Libraries and Information.

    Science.gov (United States)

    Russell, Keith W., Ed.; Pisa, Maria G., Ed.

    1990-01-01

    Eleven articles address issues relating to agricultural libraries and information, including background on agricultural libraries and information, trend management, document delivery, reference services, user needs and library services, collection development, technologies for international information management, information sources,…

  16. Application of Modern Manufacturing Technology in Agricultural Machinery Manufacture%现代制造技术在农业机械制造业中的应用

    Institute of Scientific and Technical Information of China (English)

    李晓明; 齐忠军

    2014-01-01

    In recent years, modern manufacturing technology is widely used in agricultural machinery; it speeds up the development of relative enterprises. The article expounds the status of digit-controlled lathe、virtual reality technology and digital technology application in agricultural machinery manufacture, it provides a reference for promoting the development of agricultural machinery manufacture industry.%近年来,现代制造技术被广泛运用到农业机械中,并且成为企业发展壮大的关键因素。阐述数控机床、虚拟现实技术以及数字化技术在农业机械制造业中的应用现状,为促进农业机械制造业的发展提供参考。

  17. Applying nitrogen site-specifically using soil electrical conductivity maps and precision agriculture technology.

    Science.gov (United States)

    Lund, E D; Wolcott, M C; Hanson, G P

    2001-10-16

    Soil texture varies significantly within many agricultural fields. The physical properties of soil, such as soil texture, have a direct effect on water holding capacity, cation exchange capacity, crop yield, production capability, and nitrogen (N) loss variations within a field. In short, mobile nutrients are used, lost, and stored differently as soil textures vary. A uniform application of N to varying soils results in a wide range of N availability to the crop. N applied in excess of crop usage results in a waste of the grower"s input expense, a potential negative effect on the environment, and in some crops a reduction of crop quality, yield, and harvestability. Inadequate N levels represent a lost opportunity for crop yield and profit. The global positioning system (GPS)-referenced mapping of bulk soil electrical conductivity (EC) has been shown to serve as an effective proxy for soil texture and other soil properties. Soils with a high clay content conduct more electricity than coarser textured soils, which results in higher EC values. This paper will describe the EC mapping process and provide case studies of site-specific N applications based on EC maps. Results of these case studies suggest that N can be managed site-specifically using a variety of management practices, including soil sampling, variable yield goals, and cropping history.

  18. Applying Nitrogen Site-Specifically Using Soil Electrical Conductivity Maps and Precision Agriculture Technology

    Directory of Open Access Journals (Sweden)

    E.D. Lund

    2001-01-01

    Full Text Available Soil texture varies significantly within many agricultural fields. The physical properties of soil, such as soil texture, have a direct effect on water holding capacity, cation exchange capacity, crop yield, production capability, and nitrogen (N loss variations within a field. In short, mobile nutrients are used, lost, and stored differently as soil textures vary. A uniform application of N to varying soils results in a wide range of N availability to the crop. N applied in excess of crop usage results in a waste of the grower’s input expense, a potential negative effect on the environment, and in some crops a reduction of crop quality, yield, and harvestability. Inadequate N levels represent a lost opportunity for crop yield and profit. The global positioning system (GPS-referenced mapping of bulk soil electrical conductivity (EC has been shown to serve as an effective proxy for soil texture and other soil properties. Soils with a high clay content conduct more electricity than coarser textured soils, which results in higher EC values. This paper will describe the EC mapping process and provide case studies of site-specific N applications based on EC maps. Results of these case studies suggest that N can be managed site-specifically using a variety of management practices, including soil sampling, variable yield goals, and cropping history.

  19. Structural Dynamics of Maneuvering Aircraft.

    Science.gov (United States)

    1987-09-01

    AD-RI92 376 STRUCTURAL DYNAMICS OF MANEUVERING RIRCRAFT(U) CONRAD I TECHNOLOGIES INC KING OF PRUSSIA PR M M REDDI SEP 97 CTI-8601 NRDC-88014-69...REPORT NO. NADC-8014-60 STRUCTURAL DYNAMICS OF MANEUVERING AIRCRAFT M. Mahadeva Reddi .4 Conrad Technologies, Inc. 650 S. Henderson Rd. D T IQ King of...NO A0 CCESSION NO. R02303001 107601 11. TITLE (Include Security Classfication) (u) STRUCTURAL DYNAMICS OF MANEUVERING AIRCRAFT 12. PERSONAL AUTHORS) M

  20. Overview of Electric Propulsion System Technology for Aircraft%飞机的电动力系统技术概述

    Institute of Scientific and Technical Information of China (English)

    赵长辉; 卢黎波; 陈立玮; 高奇; 孙璐

    2011-01-01

    Electric powered system is a new type of aircraft electric propulsion system, which has advantage of environment friendly and high efficiency. It may promote revolutionary development of aircraft. Key component/subsystem technology, i.e. solar cell, Li-ion battery, fuel cell, and electric motor are introduced. Design technology of electric propulsion system is analyzed. The contents are layout of five type of electric propulsion system, layout of fuel cell subsystem, key technology of subsystem. Finally, the problems of integrated optimization and disadvantage of the electric propulsion system are pointed out.%电动力系统是一种使用电能的新型飞机推进系统,具有环境友好、高效节能等优点,有望推动飞机实现革命性发展。本文介绍太阳电池、锂离子电池、燃料电池、电机等关键部件/子系统技术的现状、关键技术,并给出统计数据;重点分析了电动力系统的设计技术,包括蓄电池(锂电池)、太阳电池和燃料电池三种纯电动力系统以及基于活塞动力和基于电动力两种混合动力系统等五种电动力系统的布局、燃料电池子系统布局、子系统关键技术等。最后,指出电动力系统发展中需要解决的集成优化等技术课题以及性能不足的问题。

  1. Use of clean coal technology by-products as agricultural liming techniques

    Energy Technology Data Exchange (ETDEWEB)

    Stehouwer, R.C.; Sutton, P.; Dick, W.A. [Ohio Agricultural Research and Development Center, Wooster, OH (United States). Dept. of Agronomy

    1995-03-01

    Dry flue gas desulfurization (FGD) by-products are mixtures of coal fly-ash, anhydrite (CaCO{sub 4}), and unspent lime- or limestone-based sorbent. Dry FGD by-products frequently have neutralizing values greater than 50% CaCO{sub 3} equivalency and thus have potential for neutralizing acidic soils. Owing to the presence of soluble salts and various trace elements, however, soil application of dry FGD by-products may have adverse effects on plant growth and soil quality. The use of a dry FGD by-product as a limestone substitute was investigated in a field study on three acidic agricultural soils (pH 4.6, 4.8, and 5.8) in eastern Ohio. The by-product (60% CaCO{sub 3} equivalency) was applied in September, 1992, at rates of 0, 0.5, 1.0, and 2.0 times the lime requirement of the soils, and alfalfa (Medicago sativa L.) and corn (Zea mays L.) were planted. Soils were sampled immediately after FGD application and three more times every six months thereafter. Samples were analyzed for pH and water soluble concentrations of 28 elements. Soil pH was increased by all FGD rates in the zone of incorporation (0--10 cm), with the highest rates giving a pH slightly above 7. Within one year pH increases could be detected at depths up to 30 cm. Calcium, Mg, and S increased, and Al, Mn, and Fe decreased with increasing dry FGD application rates. No trace element concentrations were changed by dry FGD application except B which was increased in the zone of incorporation. Dry FGD increased alfalfa yield on all three soils, and had no effect on corn yield. No detrimental effects on soil quality were observed.

  2. Technology Acceptance Model (TAM As a Predictor Model for Explaining Agricultural Experts Behavior in Acceptance of ICT

    Directory of Open Access Journals (Sweden)

    Amir Alambaigi

    2016-06-01

    Full Text Available This study aimed to develop Technology Acceptance Model (TAM model to explain adoption of information technologies process. a Descriptive – correlation study was conducted and data were collected through a survey. Statistical population was West Azerbaijan Agricultural Extension agents who 120 of them were selected randomly using the Krejcie and Morgan table. A questionnaire was employed to measure the variables in the model. Its validity was confirmed by a panel of experts. The Cronbach's alpha coefficient ranged between from 0.704 to 0.816 show satisfied reliability. For data processing, partial leastsquares (PLS method as a new approach to structural equation modeling was used. The results showed that among three variables for development oftechnology acceptance model including Job relevance, experience and organization willingness to invest, the first and second show significant effects.Thus,Job relevance and experience as an external variable was added to the basic TAM. Other relations between variablesin basic technology acceptance model in current study were also seen significant. Our developed TAM can explain 64% of the actual behavior of employee in information technology utilization. TAM is one of the most influential extensions of Ajzen and Fishbein’s theory of reasoned action (TRA in the literature. The theories behind it assume that when a person forms an intention to act, that s/he will be free to act without limitation. While In the real world there will be many constraints, such as limited freedom to act. For example, people in organized working environments are forced to use most of the relevant applications irrespective of their opinion or attitude. In this research mentioned model was used as a strong model to predict actual use behavior that affected by three variables namely Job relevance, experience and organization willingness to invest.

  3. Safety and Certification Considerations for Expanding the Use of UAS in Precision Agriculture

    Science.gov (United States)

    Hayhurst, Kelly J.; Maddalon, Jeffrey M.; Neogi, Natasha A.; Vertstynen, Harry A.

    2016-01-01

    The agricultural community is actively engaged in adopting new technologies such as unmanned aircraft systems (UAS) to help assess the condition of crops and develop appropriate treatment plans. In the United States, agricultural use of UAS has largely been limited to small UAS, generally weighing less than 55 lb and operating within the line of sight of a remote pilot. A variety of small UAS are being used to monitor and map crops, while only a few are being used to apply agricultural inputs based on the results of remote sensing. Larger UAS with substantial payload capacity could provide an option for site-specific application of agricultural inputs in a timely fashion, without substantive damage to the crops or soil. A recent study by the National Aeronautics and Space Administration (NASA) investigated certification requirements needed to enable the use of larger UAS to support the precision agriculture industry. This paper provides a brief introduction to aircraft certification relevant to agricultural UAS, an overview of and results from the NASA study, and a discussion of how those results might affect the precision agriculture community. Specific topics of interest include business model considerations for unmanned aerial applicators and a comparison with current means of variable rate application. The intent of the paper is to inform the precision agriculture community of evolving technologies that will enable broader use of unmanned vehicles to reduce costs, reduce environmental impacts, and enhance yield, especially for specialty crops that are grown on small to medium size farms.

  4. Design Method and Key Technologies of US Energy Optimized Aircraft%美国能量优化飞机设计方法与关键技术

    Institute of Scientific and Technical Information of China (English)

    王子熙

    2014-01-01

    With the enhanced functions, the modern combat aircrafts are facing increasingly serious problem of power and heat consumption, the INVENT plan and the EOA concept which USA intends to solve the problem are developed. For the plan, it’s background and development plan and the EOA’s main object are introduced. The MRIP which is an important aircraft system energy design method is analyzed through building the “tip-to-tail” model, and the key technologies of EOA design are elaborated.%随着功能的增强,现代作战飞机将面临严重的功率和热耗问题。美国为解决这这一问题开发了综合飞行器能量技术(INVENT)计划,提出了能量优化飞机(EOA)概念。针对INVENT计划,介绍了背景、发展规划及EOA的主要目标。通过建立“从头到尾”(tip-to-tail)模型,分析了飞机系统能量设计的重要方法-MRIP,阐述了EOA设计时的关键技术。

  5. SOME AGRICULTURAL AND ECONOMIC ASPECTS OF ENERGY SAVING PRODUCTION TECHNOLOGIES OF MAIZE

    Directory of Open Access Journals (Sweden)

    K TAKÁCS-GYÖRGY

    2002-05-01

    Full Text Available The performance parameters, energetic characteristics and cost factors of direct drilling were evaluated by longterm trials carried out in Osztopán and Gödöllő regions. The effect of direct drilling, disking, ploughing, and soil loosening combined with disking and ploughing on the soil conditions, yields and cost factors was evaluated and based on the examination results. The economic comparisons were done by gross margin analyses of various technologies. Reducing the number of field applications is limited by the risk of soil compactions and weed infestations. From an economic part of view cost saving aspects of the various cultivation methods mentioned above cannot be justified in comparison with the ploughing methods. The lowest gross margin value was 61.79 EUR t-1, direct drilling and the highest was 67.34 EUR t-1, with ploughing but it was due to the great difference between the yield as well (6.89 and 4.03 t.ha-1. The results we achieved during our research are valid only in the given conditions, they could be recalculated and complemented under other soil and agro-ecological conditions. Our purpose was to emphasise the necessity of economical calculations before making decisions on changing technology. Our suggestion is: combined application of the traditional and energy saving methods, regarding the local conditions as well.

  6. 现代智能农业技术引领农业现代化进程初探%Discussing on Development of Agriculture Modernization Supporting by Modern Intelligent Agriculture Technologies

    Institute of Scientific and Technical Information of China (English)

    陈一飞; 高万林; 齐凯; 刘柏成

    2014-01-01

    在我国发展农业现代化无疑要结合本国国情,因此有许多发展方向和目标。把发展农业现代化看成一个大系统工程,并按照大系统理论,将其分解成由3层递阶子系统组成的大系统架构,即底层的农业生产及农产品加工现代化、中层的农业产品经营及社会服务现代化、高层的农业大系统管理与决策现代化,简述了彼此的关系。同时,阐明了现代农业科技中智慧农业和智能农业的关系,最后重点探讨了智能农业在农业生产及加工层面中至关重要的作用,提出了加强以智能农业为主导来提升农业现代化的建议。%In China , development agriculture modernization has many directions and purposes , but all of these should think domestic agricultural situations .Based on complex large system theory , development agriculture modernization can be considered one large system engineering , and which is constructed by three levels hierarchical sub -systems , it in-cludes agricultural production and processing modernization on bottom level , agricultural products trade and social server modernization on middle level , agriculture large system management and decision making modernization .In this paper , the relation among these three levels is discussed .On the other hand , paper also has presented the relation between Wis-dom Agriculture ( WA) and Intelligent Agriculture ( IA) in modern agricultural science and technology , and the IA im-portant function in bottom level of agriculture production and processing is researched .Finally , paper has presented the proposal of enhancing IA dominant function to promote agriculture modernization .

  7. Enhancing agricultural mechanization level through information technology%信息技术提升农业机械化水平

    Institute of Scientific and Technical Information of China (English)

    罗锡文; 廖娟; 邹湘军; 张智刚; 周志艳; 臧英; 胡炼

    2016-01-01

    Since 1978, great progress has been achieved in Chinese agriculture. However, the problems still exist in the development process, such as low labor productivity, high production cost, low land productivity, low yield, low rate of resource utilization and lacking international competitiveness of agricultural products. One important reason for these problems lies in the low agricultural mechanization level in China. The informationization of agricultural machinery is a fundamental way to enhance agricultural mechanization level. In order to keep the sustained growth of agricultural mechanization level and accomplish the agricultural sustainable development in China, it is critical to take full advantages of advanced information technology to improve the design, manufacturing, operation and management of agricultural machinery, and then to enhance the level of agricultural mechanization. This paper mainly introduced: 1) The key information technologies for agricultural machinery design: parametric design, agricultural machinery product design based on knowledge engineering, and concurrent and collaborative design based on product data management; 2) The key information technologies for agricultural machinery manufacturing: flexible manufacturing, computer integrated manufacturing, and virtual and network manufacturing; 3) The key information technologies for agricultural machinery operation: agricultural information acquisition, agricultural machinery navigation, and field management; 4) The key information technologies for agricultural machinery management: agricultural machinery management, and agricultural machinery scheduling. The deficiencies of current information technologies were analyzed, the development trend was summarized for the countries all over the world, and the core issues of enhancing the agricultural mechanization level in China for present information technologies were proposed. In order to further enhance the level of agricultural mechanization

  8. 物联网关键技术在设施农业中应用探讨%Application of key internet of thing technologies in facility agriculture

    Institute of Scientific and Technical Information of China (English)

    贾文珅; 李孟楠; 李雨; 孟蕾; 卢娜; 韩平; 潘立刚; 王纪华

    2016-01-01

    Agriculture Internet of Things (IoT) refers to using a large number of sensor nodes to constitute a monitoring network and use sensors to collect information so that problems can be found and located accurately. Therefore, agriculture IoT makes extensive use of various automated, intelligent, and remote-control production devices. Facility agriculture is a concrete embodiment and symbol of modern agriculture and can generate high efficiency and high profits for agriculture. Therefore, the application of agriculture IoT into facility agriculture will shift the agricultural production mode centered on manual labor and dependent on isolated machines to one centered on information and software. According to the architecture of IoT, facility agriculture IoT is divided into three parts:the perception layer, the transmission layer, and the application layer which corresponds to information perception technology, information transmission technology, and information application technology respectively. Based on the investigation and analysis of the latest developments in Chinese and foreign facility agriculture IoT technologies, this paper summarized the research progress of facility agriculture IoT in information perception technology, information transmission technology, and information application technology, as well as big data and Iot facilities agriculture, etc. Based on the developments in facility agriculture IoT technologies, some constructive suggestions from the aspects of the perception layer, transmission layer, and application layer were put forward.%农业物联网是将大量的传感器节点构成监控网络,通过各种传感器采集信息,以便发现问题,并且准确地确定发生问题的位置,从而大量使用各种自动化、智能化、远程控制的生产设备。而设施农业是现代化农业的具体体现和标志,可以获取农业生产高效率与高收益,因此将农业物联网应用到设施农业中,将突破

  9. Amphibious Aircraft

    Data.gov (United States)

    National Aeronautics and Space Administration — A brief self composed research article on Amphibious Aircrafts discussing their use, origin and modern day applications along with their advantages and disadvantages...

  10. Aircraft Disinsection

    Science.gov (United States)

    Some countries may require aircraft coming from countries where certain insects or insect-borne diseases are present, such as malaria and Zika virus, to be treated with insecticide. Find out about regulation of pesticides for this treatment.

  11. Soil ecology and agricultural technology; An integrated approach towards improved soil management for sustainable farming

    Science.gov (United States)

    Pulleman, Mirjam; Pérès, Guénola; Crittenden, Stephen; Heddadj, Djilali; Sukkel, Wijnand

    2014-05-01

    Intensive arable food production systems are in need of smart solutions that combine ecological knowledge and farm technology to maximize yields while protecting natural resources. The huge diversity of soil organisms and their interactions is of crucial importance for soil functions and ecosystem services, such as organic matter incorporation and break down, nutrient mineralization, soil structure formation, water regulation and disease and pest control. Soil management decisions that take into account the soil biodiversity and associated functions are thus essential to (i) maintain soil productivity in the long term, (ii) reduce the dependency on external inputs and non-renewables such as fossil fuels, and (iii) make agroecosystems more resilient against biotic and abiotic stresses. Organic farming systems and reduced tillage systems are two approaches that aim to increase soil biodiversity and general soil quality, through improved management of organic matter but differ in their emphasis on the use of chemical inputs for crop protection or soil disturbance, respectively. In North-western Europe experience with and knowledge of reduced tillage systems is still scarce, both in conventional and organic farming. Our study targeted both conventional and organic farming and aimed at 1) documenting reduced tillage practices within different agroecological contexts in NW Europe; 2) evaluating the effects of reduced tillage systems on soil biodiversity and soil ecosystem services; 3) increase understanding of agroecological factors that determine trade-offs between different ecosystem services. Earthworm species and nematode taxa were selected as indicator organisms to be studied for their known response to soil management and effects on soil functions. Additionally, soil organic matter, physical soil parameters and processes, and crop yields have been measured across multiple sites. Data have been collected over several cropping seasons in long term field experiments

  12. Agricultural Industry Advanced Vehicle Technology: Benchmark Study for Reduction in Petroleum Use

    Energy Technology Data Exchange (ETDEWEB)

    Roger Hoy

    2014-09-01

    Diesel use on farms in the United States has remained relatively constant since 1985, decreasing slightly in 2009, which may be attributed to price increases and the economic recession. During this time, the United States’ harvested area also has remained relatively constant at roughly 300 million acres. In 2010, farm diesel use was 5.4% of the total United States diesel use. Crops accounting for an estimated 65% of United States farm diesel use include corn, soybean, wheat, hay, and alfalfa, respectively, based on harvested crop area and a recent analysis of estimated fuel use by crop. Diesel use in these cropping systems primarily is from tillage, harvest, and various other operations (e.g., planting and spraying) (Figure 3). Diesel efficiency is markedly variable due to machinery types, conditions of operation (e.g., soil type and moisture), and operator variability. Farm diesel use per acre has slightly decreased in the last two decades and diesel is now estimated to be less than 5% of farm costs per acre. This report will explore current trends in increasing diesel efficiency in the farm sector. The report combines a survey of industry representatives, a review of literature, and data analysis to identify nascent technologies for increasing diesel efficiency

  13. Malawi - Conservation Agriculture

    Data.gov (United States)

    Millennium Challenge Corporation — The randomized control trial impact evaluation tests different strategies for communicating information about agricultural technologies to smallholder maize farmers...

  14. Existing Problems and Countermeasures of Ag-ricultural Technology Po-pularization System in China%我国农业技术推广体系存在的问题与对策

    Institute of Scientific and Technical Information of China (English)

    吴守军; 刘士国

    2015-01-01

    针对我国农业技术推广体系存在的主要问题,如农业科技推广队伍结构不合理、农业科技投入不足、农业科技成果转化效率不高等,提出了促进农业技术推广工作的建议,包括加强对现有农业科技人员的技术培训,加大农业科技推广资金投入及建立高效的成果转化机制等,为农业技术推广工作提供了借鉴。%Aiming at existing problems of agricultural technology popularization system in China, such as unreasonable structure of popularizing agricultural sci-ence and technology team, inadequate a-gricultural science and technology, low agricultural science and technology achievements transformation efficiency and others. Moreover, the countermea-sures for promoting agricultural tech-nology popularization system in our country were put forward from the fol-lowing aspects, including strengthening the technical training of the existing a-gricultural science and technology per-sonnel, increasing funding for agricultur-al science and technology promotion and establishing efficient mechanism of achievements, et al. The results provided references for agricultural technology promotion.

  15. A quantitative and constraint-specific method to assess the potential impact of new agricultural technology : the case of frost resistant potato for the Altiplano (Peru and Bolivia)

    NARCIS (Netherlands)

    Hijmans, R.J.; Condori, B.; Carrillo, R.; Kropff, M.J.

    2003-01-01

    A quantitative and constraint-specific approach to assess the potential impact of new agricultural technology is described and applied to frost resistant potato cultivars for the Altiplano (Peru and Bolivia). The approach uses geo-referenced databases and a simulation model. Calculations are made fo

  16. Appropriateness of Recommended Agricultural Water-Management Technologies as Perceived by the Personnel of Research and Extension System: A Study in the Eastern Region of India

    Science.gov (United States)

    Ghosh, Souvik; Verma, H. N.; Chandra, Dinesh; Nanda, P.

    2005-01-01

    The key to agricultural development in the eastern region of India, where problems of excess water and water scarcity coexist, is the scientific management of water resources with the adoption of recommended water-management technologies. A vast networking of infrastructure for the development and dissemination of water-management technologies…

  17. The College of Tropical Agriculture at the University of Hawaii: A Case Study in the U.S. Application of Science and Technology to Development in Developing Countries.

    Science.gov (United States)

    Schlie, Theodore W.; And Others

    Presented is a case study of a college program focused upon the application of science and technology to development in less developed countries. The activities described are those of the University of Hawaii's College of Tropical Agriculture. This program's history, components, problems, and future prospects are discussed in an attempt to learn…

  18. Appropriateness of Recommended Agricultural Water-Management Technologies as Perceived by the Personnel of Research and Extension System: A Study in the Eastern Region of India

    Science.gov (United States)

    Ghosh, Souvik; Verma, H. N.; Chandra, Dinesh; Nanda, P.

    2005-01-01

    The key to agricultural development in the eastern region of India, where problems of excess water and water scarcity coexist, is the scientific management of water resources with the adoption of recommended water-management technologies. A vast networking of infrastructure for the development and dissemination of water-management technologies…

  19. The Experience of Training Pilots over the Age of 40 Transitioning to Technologically Advanced Aircraft: A Grounded Theory

    Science.gov (United States)

    Kolmos, John A.

    2017-01-01

    Older adults face many challenges in the workplace, one being the advancement of technologies both in hardware and software development. The purpose of the study was to understand the learned experiences of older adults integrating advanced technologies into their critical decision-making work experience because of training. Literature claimed a…

  20. Robots for Aircraft Maintenance

    Science.gov (United States)

    1993-01-01

    Marshall Space Flight Center charged USBI (now Pratt & Whitney) with the task of developing an advanced stripping system based on hydroblasting to strip paint and thermal protection material from Space Shuttle solid rocket boosters. A robot, mounted on a transportable platform, controls the waterjet angle, water pressure and flow rate. This technology, now known as ARMS, has found commercial applications in the removal of coatings from jet engine components. The system is significantly faster than manual procedures and uses only minimal labor. Because the amount of "substrate" lost is minimal, the life of the component is extended. The need for toxic chemicals is reduced, as is waste disposal and human protection equipment. Users of the ARMS work cell include Delta Air Lines and the Air Force, which later contracted with USBI for development of a Large Aircraft Paint Stripping system (LARPS). LARPS' advantages are similar to ARMS, and it has enormous potential in military and civil aircraft maintenance. The technology may also be adapted to aircraft painting, aircraft inspection techniques and paint stripping of large objects like ships and railcars.

  1. Plan of Using Modern Agriculture High-New Information Technology for Building Stable Nation Commercial Grain and Green Agriculture Base of China

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The North-East China is nation commercial grain base of China. It provides important grain supply for other areas of the country every year. The nation and modern farmers are looking for advanced technological solutions to increase production and preserve environment. Considering of this aim,this paper introduce a new planning that using 3S technology to develop precision farming, explaining its technology frame, operation steps and advantages. On the other hand,this paper also introduce the concept of precision farming and discusses the role of 3S technology as a data collection,management and analysis tool.

  2. THE ROLE AND PLACE OF THE «NATIONAL PLAN FOR SCIENCE AND TECHNOLOGY IN THE AIRCRAFT INDUSTRY FOR THE PERIOD UP TO 2025 AND THE SUBSEQUENT PROSPECT» IN STRATEGIC PLANNING DOCUMENTS

    Directory of Open Access Journals (Sweden)

    V. A. Hariton

    2014-01-01

    Full Text Available A brief overview of the strategic planning documents in the aviation industry, defined the legal status of the developed "National Plan for Science and Technology in the aircraft industry for the period up to 2025 and the subsequent prospect" assesses its role and place in the strategic planning documents, the relationship with the main documents. Disclosed structure of the National Plan and the goal of scientific and technological potential, defined by the National Plan.

  3. Study on Key Technologies in Agriculture Internet of Things%农业物联网中关键技术研究进展

    Institute of Scientific and Technical Information of China (English)

    赵湘宁

    2011-01-01

    Internet of Things, loT, is a new technical hierarchy system combined by several information technologies. IoT is known as the third wave of global information industry after computer and Internet. The applications of IoT in agriculture are required by the modern agriculture development. This paper introduces the IoT's concept, the system framework, the development, and the applications in agriculture. Furthermore, this paper analyses the key technologies of agriculture IoT, including the sensor networking technology, the identification technology, communication technology and the intelligent processing technology, and points out the existing challenges and development directions of the above technologies.%物联网是由多项信息技术融合而成的新型技术体系,被称为继计算机、互联网之后,世界信息产业的第三次浪潮。农业物联网技术的应用是现代农业发展的需要,也是现代农业发展的方向。该文首先对物联网的概念和体系架构进行分析,介绍了物联网的发展及其在农业方面的应用,接着根据物联网体系结构,分析了农业物联网中的传感器网络技术身份识别技术、通信技术、智能处理技术等关键技术,并指出各种技术中存在的挑战及发展方向。

  4. 社会资本与可持续农业技术扩散研究%Analysis on the Social Capital and Sustainable Agricultural Technology Diffusion

    Institute of Scientific and Technical Information of China (English)

    张群

    2012-01-01

    In the process of realizing sustainable agricultural technology diffusion, a social network within farmers and farmers, farmers and agribusiness or agricultural associations, research institutions was formed. The accumulated social capital could eliminate the constraints of the small - scale agriculture, help farmers to obtain credit, purchase new technology and adopt new technologies, decrease the opportunism in the use of green technology, reduce the constraints for the new technology use, then accelerate the spread of sustainable agricultural - technology. Therefore , we should not only pay attention to the role of market and government, but also focus on building and accumulating social capital during the process of realizing rural sustainable development technology diffusion.%在实现可持续的农业技术扩散的过程中,区域内农户与农户之间及农户与涉农企业或者农业协会、科研机构的联系所形成的社会网络,所积累的社会资本能够消除单个农户规模小的制约,有助于农户获得信用贷款,引进和购买新技术.社会资本能够减少技术采用中的机会主义,降低采用可持续发展的新技术的制约,从而加快绿色农业技术的扩散.因此,在实现农村可持续发展的技术扩散过程中,除了发挥市场和政府的作用以外,也要注重社会资本的构建和积累.

  5. Technology choice and development in Brazil: An assessment of Brazil's alternative fuel program and the agriculture, manufacturing, energy, and service sectors

    Science.gov (United States)

    Nolan, Lucy A.

    Technology choice profoundly affects a country's development process because capital-intensive and labor-intensive technologies have different socioeconomic linkages within the economy. This research examines the impacts of technology choice through the use of a social accounting matrix (SAM) framework. SAM-based modeling determines the direct and indirect effects of technology choice on development, particularly poverty alleviation in Brazil. Brazil's alternative fuel program was analyzed as a special example of technology choice. Two ethanol production technologies and the gasoline sector were compared; to make the study more robust, labor and capital intensive technologies were evaluated in the production of agriculture, manufacturing, energy, and services. Growth in these economic sectors was examined to assess the effects on employment, factor and household income, energy intensity, and carbon dioxide costs. Poverty alleviation was a focus, so income to unskilled agriculture labor, unskilled non-agriculture labor, and income to rural and urban households in poverty was also analyzed. The major research finding is that overall, labor-intensive technologies generate more employment, factor and household income, environmental and energy benefits to Brazil's economy than capital-intensive technologies. In addition, labor-intensive technologies make a particular contribution to poverty alleviation. The results suggest that policies to encourage the adoption of these technologies, especially in the agriculture and renewable energy sectors, are important because of their intersectoral linkages within the economy. Many studies have shown that Brazil's fuel ethanol program has helped to realize multiple macroeconomic objectives. However, this is the first empirical study to quantify its household income effects. The ethanol industry generated the most household income of the energy sectors. The research confirms a key finding of the appropriate technology literature

  6. Hydrogen Storage for Aircraft Applications Overview

    Science.gov (United States)

    Colozza, Anthony J.; Kohout, Lisa (Technical Monitor)

    2002-01-01

    Advances in fuel cell technology have brought about their consideration as sources of power for aircraft. This power can be utilized to run aircraft systems or even provide propulsion power. One of the key obstacles to utilizing fuel cells on aircraft is the storage of hydrogen. An overview of the potential methods of hydrogen storage was compiled. This overview identifies various methods of hydrogen storage and points out their advantages and disadvantages relative to aircraft applications. Minimizing weight and volume are the key aspects to storing hydrogen within an aircraft. An analysis was performed to show how changes in certain parameters of a given storage system affect its mass and volume.

  7. Biogeosystem technique as a method to overcome the Biological and Environmental Hazards of modern Agricultural, Irrigational and Technological Activities

    Science.gov (United States)

    Kalinitchenko, Valery; Batukaev, Abdulmalik; Zinchenko, Vladimir; Zarmaev, Ali; Magomadov, Ali; Chernenko, Vladimir; Startsev, Viktor; Bakoev, Serojdin; Dikaev, Zaurbek

    2014-05-01

    Modern challenge for humanity is to replace the paradigm of nature use and overcome environmental hazards of agronomy, irrigation, industry, and other human activities in biosphere. It is utterly reasonable to stop dividing biosphere on shares - the human habitat and the environment. In the 21st century it is an outdated anthropocentrism. Contradicting himself to biosphere Humankind has the problems. The new paradigm of biosphere control by methods of Biogeosystem technique is on agenda of Humankind. Key directions of Biogeosystem technique. Tillage. Single rotary milling 20…30-50…60 sm soil layer optimizes the evolution and environment of soil, creates a favorable conditions for the rhizosphere, increases the biological productivity of biosphere by 30-50% compared to the standard agricultural practices for the period up to 40 years. Recycle material. Recycling of mineral and organic substances in soil layer of 20…30-50…60 sm in rotary milling soil processing provides wastes clean return to biosphere. Direct intrasoil substances synthesis. Environmentally friendly robot wasteless nanotechnology provides direct substances synthesis, including fertilizers, inside the soil. It eliminates the prerequisites of the wastes formation under standard industrial technologies. Selective substance's extraction from soil. Electrochemical robotic nanotechnology provides selective substances extraction from soil. The technology provides recovery, collection and subsequent safe industrial use of extracted substances out of landscape. Saving fresh water. An important task is to save fresh water in biosphere. Irrigation spends water 4-5 times more of biological requirements of plants, leads to degradation of soil and landscape. The intrasoil pulse continuous-discrete paradigm of irrigation is proposed. It provides the soil and landscape conservation, increases the biological productivity, save the fresh water up to 10-20 times. The subsurface soil rotary processing and

  8. 基于物联网技术的智能农业应用系统%Intelligent agriculture application system based on IOT technology

    Institute of Scientific and Technical Information of China (English)

    林元乖; 龙顺宇; 杨伟

    2013-01-01

    Based on the development of modern agriculture intelligent and actual demands, an IOT based intelligent agriculture application system was designed. The technologies used in the system includes Zigbee technology, wireless networking, sensor technology, RFID ntechnology, MCU intelligent control, bar code recognition, embedded TCP/IP technology, GSM communication technology, GPRS communication technology, GPS global positioning technology, DTU remote transmission technology, TTS speech synthesis technology and adaptive gateway switching technology. This environmental monitoring system is composed of the agricultural products and nurturing platform subsystem, agricultural products transportation management and control subsystem, and agricultural products sales and distribution management subsystem. Those three subsystems are remotely interacted to solve some of the practical problems such as intelligent monitoring and cultivation, transportation, sale, stage. The scientific cultivation of crops, precision transportation and smart product traceability were realized ultimately.%  立足现代农业智能化发展和实际需求,合理选用ZigBee技术、无线组网技术、传感器技术、RFID技术、单片机智能控制技术、条码识别技术、嵌入式TCP/IP技术、GSM通讯技术、GPRS通讯技术、GPS全球定位技术、DTU远程传送技术、TTS语音合成技术、自适应网关切换技术等物联网关键技术,设计了一种基于物联网技术的智能农业应用系统。该系统包括农业产品环境监测与培育平台系统、农业产品运输管理与控制系统、农业产品销售与分配管理系统等三个子系统,可通过远程交互方式来解决农作物的智能监测和培育、运输、销售等阶段的一些实际问题,最终实现农作物的科学培育、精准运输、产品溯源等智能农业应用。

  9. Vision System for Aircraft Based on Augmented Reality Technology%基于增强现实技术的飞行视景系统

    Institute of Scientific and Technical Information of China (English)

    张仟新; 张钰鹏

    2016-01-01

    提出一种基于增强现实技术的新型飞行视景系统。该系统利用机载图像设备及飞机位姿传感器,计算飞机获得的真实空间兴趣点的三维信息,并据此实时叠加相应的可视化信息,最终形成虚实融合的图像显示在飞机的显示设备中,便于飞行员能同时感知飞机外部的真实环境和相应位置上的关键信息。这套系统具有数据量小、显示直观的特点,能为飞行员提供更加有效的信息,具有广阔的应用前景。%This paper proposes a new vision system for aircraft based on augmented reality technology. The proposed system uses airborne image capturing device and aircraft attitude sensors to compute the three-dimensional information of interested point, then generates corresponding virtual information, and finally displays image merging of real and virtual worlds, by which pilot can understand the computer-generated key information while viewing the flight environment. The system has the advantages of small quantity of data storage and understandable information presentation, which is very useful for pilot to make a faster judgment and has a promising future in avionics application.

  10. 顺应论视角下的农业科技英语翻译%Agricultural Science and Technology English Translation in the Perspective of Adaptation Theory

    Institute of Scientific and Technical Information of China (English)

    张景发; 廖信伟

    2012-01-01

    With the further deepening of reform and opening up and socialist modernization,the life sciences to obtain a rapid development,especially agricultural biotechnology development by leaps and bounds,increasing the degree of internationalization.English translation of agricultural science and technology to become an important bridge between Chinese and foreign exchange of agricultural technology,starting from the point of view of the Adaptation Theory to explore the English translation of agricultural science and technology.%随着改革开放和社会主义现代化建设的进一步深入,生命科学获得了迅猛的发展,尤其是农业生物技术发展更是突飞猛进,国际化程度越来越高。农业科技英语翻译成为中外农业技术交流的重要桥梁,本文从顺应论的角度出发对农业科技英语的翻译进行探讨。

  11. Euler Technology Assessment for Preliminary Aircraft Design-Unstructured/Structured Grid NASTD Application for Aerodynamic Analysis of an Advanced Fighter/Tailless Configuration

    Science.gov (United States)

    Michal, Todd R.

    1998-01-01

    This study supports the NASA Langley sponsored project aimed at determining the viability of using Euler technology for preliminary design use. The primary objective of this study was to assess the accuracy and efficiency of the Boeing, St. Louis unstructured grid flow field analysis system, consisting of the MACGS grid generation and NASTD flow solver codes. Euler solutions about the Aero Configuration/Weapons Fighter Technology (ACWFT) 1204 aircraft configuration were generated. Several variations of the geometry were investigated including a standard wing, cambered wing, deflected elevon, and deflected body flap. A wide range of flow conditions, most of which were in the non-linear regimes of the flight envelope, including variations in speed (subsonic, transonic, supersonic), angles of attack, and sideslip were investigated. Several flowfield non-linearities were present in these solutions including shock waves, vortical flows and the resulting interactions. The accuracy of this method was evaluated by comparing solutions with test data and Navier-Stokes solutions. The ability to accurately predict lateral-directional characteristics and control effectiveness was investigated by computing solutions with sideslip, and with deflected control surfaces. Problem set up times and computational resource requirements were documented and used to evaluate the efficiency of this approach for use in the fast paced preliminary design environment.

  12. 客机座舱气态污染物及其净化技术现状%Review of gaseous pollutants in aircraft cabin and purification technologies

    Institute of Scientific and Technical Information of China (English)

    陆义; 裴晶晶; 韩旭; 刘鲁萌; 刘俊杰

    2014-01-01

    介绍了客机座舱环境的特点与飞机环境控制系统中的通风净化系统,给出了国外关于机舱内空气质量的实际调查结果,总结了目前新风中臭氧处理的方法及可能面临的问题,对可用于回风中挥发性有机化合物处理的几种技术及其利弊进行了分析对比,探讨了机舱空气净化技术的发展方向。%Presents the characteristics of aircraft cabin environment and the ventilation purification system of its environmental control system.Gives survey results of cabin air quality,and summarizes ozone treatment methods in cabin outdoor air systems and potential problems.Analyses and compares several technologies that can be used for removal of volatile organic compounds in cabin return air systems. Discusses the developing orientation of cabin air purification technology.

  13. Management and Evaluation of Public Welfare Agricultural Science and Technology Projects%公益性农业科技项目的管理和评价

    Institute of Scientific and Technical Information of China (English)

    杨闯; 王敬华

    2011-01-01

    The public welfare agricultural science and technology projects play a leading and supporting role on the development of modern agriculture.The connotation,feature,function orientation,management mode at home and abroad,evaluation principle and evaluation types of public welfare agricultural science and technology projects were reviewed and analyzed in the paper.Measures to strengthen the management and evaluation of public welfare agricultural science and technology projects and to do the job better were put forward,which includes promoting construction of research team and the innovation system,promoting international cooperation and exchanges,innovating evaluation mechanism for public welfare agricultural science and technology projects.%公益性农业科技项目对现代农业的发展起着引领与支撑作用。文章对公益性农业科技项目的内涵、特点、功能定位、国内外的管理模式、评价原则和评价类型进行了综述和分析,提出了促进科研团队与创新体系建设、促进国际合作与交流、创新公益性农业科技项目评价机制等措施,以期进一步做好公益性农业科技项目管理和评价工作。

  14. Aircraft Data Acquisition

    OpenAIRE

    Elena BALMUS

    2016-01-01

    The introduction of digital systems instead of analog ones has created a major separation in the aviation technology. Although the digital equipment made possible that the increasingly faster controllers take over, we should say that the real world remains essentially analogue [4]. Fly-by-wire designers attempting to control and measure the real feedback of an aircraft were forced to find a way to connect the analogue environment to their digital equipment. In order to manage the implications...

  15. Cost/benefit studies of advanced materials technologies for future aircraft turbine engines: Materials for advanced turbine engines

    Science.gov (United States)

    Stearns, M.; Wilbers, L.

    1982-01-01

    Cost benefit studies were conducted on six advanced materials and processes technologies applicable to commercial engines planned for production in the 1985 to 1990 time frame. These technologies consisted of thermal barrier coatings for combustor and high pressure turbine airfoils, directionally solidified eutectic high pressure turbine blades, (both cast and fabricated), and mixers, tail cones, and piping made of titanium-aluminum alloys. A fabricated titanium fan blisk, an advanced turbine disk alloy with improved low cycle fatigue life, and a long-life high pressure turbine blade abrasive tip and ceramic shroud system were also analyzed. Technologies showing considerable promise as to benefits, low development costs, and high probability of success were thermal barrier coating, directionally solidified eutectic turbine blades, and abrasive-tip blades/ceramic-shroud turbine systems.

  16. Aircraft cybernetics

    Science.gov (United States)

    1977-01-01

    The use of computers for aircraft control, flight simulation, and inertial navigation is explored. The man-machine relation problem in aviation is addressed. Simple and self-adapting autopilots are described and the assets and liabilities of digital navigation techniques are assessed.

  17. 中国农业航空植保产业技术创新发展战略%Technology innovation development strategy on agricultural aviation industry for plant protection in China

    Institute of Scientific and Technical Information of China (English)

    周志艳; 臧英; 罗锡文; Lan Yubin; 薛新宇

    2013-01-01

    Based on the review of the current status and perspectives of worldwide agricultural aviation (AA) and completive analysis of the technology demand, the development strategies of aviation plant protection in China were recommended. The main restricting factors to the development of AA industry in China were pointed out, which including the imperfect policies and regulations of AA at present, lack of supporting core technologies, qualified AA professionals, understanding on AA, public support to the development of AA, and defective social service system in AA, etc. And then the countermeasures to promote the rapid and healthy development of AA in China were put forward, which including the adoption of multi-type and multi-operation models to improve the applicability of AA, increasing the capital investment to enhance the core technologies research, fortifying targeted policies to strengthen and standardize the management of AA. Finally, the demand prediction of agricultural aircraft type in China was conducted by using empiric estimation demand prediction method. The demand prediction analysis shows that the AA industry in China has not really started, and the market will dramatically increase. In the coming 15 years, the AA aircraft type in China will mainly include manned fixed-wing aircraft, manned helicopter, gasoline-powered unmanned aerial vehicle (UAV), battery-power UAV and others, and the working area to the whole cultivated area of all of these aircraft type will be about 5%by the end of 2015, 20%by 2020, 40%by 2025, 50%by 2030 respectively. It was estimated about 46.5 billion RMB of the new investment on AA aircraft type in next 15 years. With the relevant system and supporting core technologies improving continuously, the AA industry will get a healthy, orderly and rapid development in China.%农业航空是现代农业的重要组成部分和反映农业现代化水平的重要标志之一。该文在分析中国农业现代化建设中对航空植保

  18. Aircraft noise prediction

    Science.gov (United States)

    Filippone, Antonio

    2014-07-01

    This contribution addresses the state-of-the-art in the field of aircraft noise prediction, simulation and minimisation. The point of view taken in this context is that of comprehensive models that couple the various aircraft systems with the acoustic sources, the propagation and the flight trajectories. After an exhaustive review of the present predictive technologies in the relevant fields (airframe, propulsion, propagation, aircraft operations, trajectory optimisation), the paper addresses items for further research and development. Examples are shown for several airplanes, including the Airbus A319-100 (CFM engines), the Bombardier Dash8-Q400 (PW150 engines, Dowty R408 propellers) and the Boeing B737-800 (CFM engines). Predictions are done with the flight mechanics code FLIGHT. The transfer function between flight mechanics and the noise prediction is discussed in some details, along with the numerical procedures for validation and verification. Some code-to-code comparisons are shown. It is contended that the field of aircraft noise prediction has not yet reached a sufficient level of maturity. In particular, some parametric effects cannot be investigated, issues of accuracy are not currently addressed, and validation standards are still lacking.

  19. Review of High-lift Device Technology Development on Large Aircrafts%大型飞机增升装置技术发展综述

    Institute of Scientific and Technical Information of China (English)

    李丽雅

    2015-01-01

    高效的增升装置是现代大型飞机研制中的关键技术之一。详细介绍了增升装置的原理和现代大型飞机常用的增升装置类型及其支撑与驱动机构。增升装置设计是一个多学科多目标的问题,从气动性能要求、噪声要求和结构重量要求几个方面介绍了增升装置的设计目标。研究了增升装置的发展历程和气动计算与实验方法,最后提出了增升装置的发展趋势和新技术。%Efifcient high-lift device is one of the most important technologies in modern large aircraft research. High-lift theory was introduced in detail, including several types of common high-lift devices as well as their supporting and driving mechanisms. Since high-lift system design involves multidisciplinary and multi-objective issues, this paper introduced several design objectives of high-lift system in terms of aerodynamic performance, noise requirement and structural weight. Also, the development history of high-lift devices was studied, as well as the CFD technology and experiment approach. At last, this paper presented the development tendency of high-lift device and some promising technologies.

  20. The UK Released a Strategy for Agricultural Technologies to Increase Its Agricultural Competitiveness%英国实施《农业技术战略》以提高农业竞争力

    Institute of Scientific and Technical Information of China (English)

    杨艳萍; 董瑜

    2015-01-01

    英国政府于 2013 年 7 月发布了一份《农业技术战略》政策报告,旨在解决英国农业科技成果转化的瓶颈问题,以提高英国农业产业竞争力。该报告从农业科技投入、农业食品供应链和全球市场等方面,对英国农业现状进行了分析,并提出了相应的行动计划和成果评价考核指标。随后,英国政府启动了相关的配套设施和研究项目,以促进农业科技成果的转化。通过对上述各方面内容进行详细介绍和分析,以期为我国农业科技成果转移、转化等相关工作提供参考。%The British government released a policy reportA UKStrategy forAgriculturalTechnology in July 2013. In this strategy, the bottleneck in translating high quality agricultural research into practical applications was focused on to strengthen the agricultural competitiveness of th UK. Moreover, the current situations of the British agriculture were analyzed in detail in this report, including the investment in agri-tech, the food and farming supply chain, and the global markets. In addition, the corresponding actions and indicators for assessing this strategy were also proposed in the policy report. A variety of programs have been implemented since the strategy was released to improve the transformation for agricultural science and technology achievements. Herein, we present detailed summary of this strategy and introduction of related programs. That will be a useful reference for the transformation of agricultural S&T achievements in our country.

  1. Study of the technological production at the State University of Londrina (UEL: mapping the area of Agricultural Sciences by Platform Lattes

    Directory of Open Access Journals (Sweden)

    Natan Tiago Batista Serzedello

    2011-06-01

    Full Text Available Introduction: Technological products and processes employed to solve society’s practical problems comprise technological production, which is the essential means to measure the technological development of the environment in which the institution is inserted. This research aimed to verify the State University of Londrina’s (UEL technological production in the field of Agro-Sciences. Method: The methodological approach was to identify and analyze technological production through the curricula of the 51 professors granted with scholarships by UEL’s  Scientific Initiation Program (PROIC available at the Lattes Platform. The data collected for analysis was charted and categorized according to technological production typology. Results: Of the 65 registered items in the researchers´curricula lattes refer to the technological production. Those items were mapped in order to describe the types identified. It was observed that the most innovative specialties are Agronomy, Forestry and Forest Engineering, Agricultural Engineering, Animal Science, Veterinary Medicine, Fisheries Resources and Fishing Engineering, Science and Food Technology. Conclusions: The production  resulting from research activities of technological development, has spread through the production literature, primarily journal articles. Researchers build partnerships in the same Department, or with others within and outside the University, interacting and sharing experiences, knowledge and equipment. This practice improves a technological production that is more likely to be successful. A considerable percentage of articles are published in Open Archives Initiative(OAI journals, allowing free access and encourages the dissemination of research results.

  2. Commercial Aircraft Protection

    Energy Technology Data Exchange (ETDEWEB)

    Ehst, David A. [Argonne National Lab. (ANL), Argonne, IL (United States)

    2016-10-26

    This report summarizes the results of theoretical research performed during 3 years of P371 Project implementation. In results of such research a new scientific conceptual technology of quasi-passive individual infrared protection of heat-generating objects – Spatial Displacement of Thermal Image (SDTI technology) was developed. Theoretical substantiation and description of working processes of civil aircraft individual IR-protection system were conducted. The mathematical models and methodology were presented, there were obtained the analytical dependencies which allow performing theoretical research of the affect of intentionally arranged dynamic field of the artificial thermal interferences with variable contrast onto main parameters of optic-electronic tracking and homing systems.

  3. Optics in aircraft engines

    Science.gov (United States)

    Vachon, James; Malhotra, Subhash

    The authors describe optical IR&D (independent research and development) programs designed to demonstrate and evaluate optical technologies for incorporation into next-generation military and commercial aircraft engines. Using a comprehensive demonstration program to validate this technology in an on-engine environment, problems encountered can be resolved early and risk can be minimized. In addition to specific activities related to the optics demonstration on the fighter engine, there are other optical programs underway, including a solenoid control system, a light off detection system, and an optical communication link. Research is also underway in simplifying opto-electronics and exploiting multiplexing to further reduce cost and weight.

  4. Definition of 1992 Technology Aircraft Noise Levels and the Methodology for Assessing Airplane Noise Impact of Component Noise Reduction Concepts

    Science.gov (United States)

    Kumasaka, Henry A.; Martinez, Michael M.; Weir, Donald S.

    1996-01-01

    This report describes the methodology for assessing the impact of component noise reduction on total airplane system noise. The methodology is intended to be applied to the results of individual study elements of the NASA-Advanced Subsonic Technology (AST) Noise Reduction Program, which will address the development of noise reduction concepts for specific components. Program progress will be assessed in terms of noise reduction achieved, relative to baseline levels representative of 1992 technology airplane/engine design and performance. In this report, the 1992 technology reference levels are defined for assessment models based on four airplane sizes - an average business jet and three commercial transports: a small twin, a medium sized twin, and a large quad. Study results indicate that component changes defined as program final goals for nacelle treatment and engine/airframe source noise reduction would achieve from 6-7 EPNdB reduction of total airplane noise at FAR 36 Stage 3 noise certification conditions for all of the airplane noise assessment models.

  5. Entire 3D and Quick Response Trial-manufacture Technology for Aircraft%飞机全三维快速响应试制应用技术

    Institute of Scientific and Technical Information of China (English)

    孙聪

    2013-01-01

      提出了在飞机研制中采用全三维快速响应试制技术,以全三维数字化设计数模为核心,三维设计、三维制造、三维检验的技术体系。这种技术体系设计/工艺高度并行,单一数据源时时共享,并作为唯一依据贯穿飞机研制全生命周期,“边设计、边制造”,制造技术前移。在新型研发平台上建立了以设计与制造一体化为核心的快速试制技术体系,在新技术应用上上了一个台阶,重量控制精准、试制流程简捷、技术体系先进、技术手段实用,实现了“好、快、廉”的设计目标。%The entire 3D and quick response trial-manufacture technology is based on the entire 3D digital model design including 3D design, 3D manufacture and 3D checking. The technology features concurrent and collaborative digital design and manufacture, unique real-time data source shared throughout the entire process of aircraft development, realies design and manufacturing simultaneously, and brings manufacturing forward. The trial-manufacture technology with the core of design/manufacture integration was established on a platform, which turns out to be a precise weight control, an easy and fast trial-manufacture, advanced technology system and a practical technical means. The technology can achieve the design goal of “good performance, rapid manufacturing, low cost”.

  6. POISSON COUNT MODELS TO EXPLAIN THE ADOPTION OF AGRICULTURAL AND NATURAL RESOURCE MANAGEMENT TECHNOLOGIES BY SMALL FARMERS IN CENTRAL AMERICAN COUNTRIES

    OpenAIRE

    Ramirez, Octavio A.; Schultz, Steven D.

    2000-01-01

    Evaluations of the factors influencing the adoption of agricultural and natural resource management technologies among small farmers in developing countries have been mostly limited to qualitative discussions or simple descriptive statistics resulting in superficial and inconclusive findings. This study introduces the use of Poisson Count Regressions as a statistically appropriate procedure to analyze certain common types of adoption data. It uses them to assess the impact of key socio-econom...

  7. 移动微学习在农业科技教育中的应用%Application of Mobile Micro-learning in the Agricultural Technology Education

    Institute of Scientific and Technical Information of China (English)

    高政; 徐妲; 陈硕

    2014-01-01

    移动微学习方式是一种随着技术发展产生的一种新型学习方式,改变了传统农村科技教育模式,将学习内容微小化,符合农民学习时间不固定、学习场所不集中、学习风格差异化的特点,这种学习方式非常适合在农村推广应用。移动微学习在内容设计上有其独特性,应遵循模块短小、目标简明、内容实用的原则开展学习活动。%The agriculture technology education is the key problem of rural modernization development, but the process of agriculture technology knowledge spreading and popularizing is not smooth going. As the development of mobile electronic devices, mobile micro-learning has become a very popular adult informal learning method. This article analyzed the learning characteristics of peasant, the result proved that it is feasible to introduce mobile micro-learning theory into the agriculture technology. And discussed the teaching methods and content design principles of mobile micro-learning.

  8. Aircraft recognition and tracking device

    Science.gov (United States)

    Filis, Dimitrios P.; Renios, Christos I.

    2011-11-01

    The technology of aircraft recognition and tracking has various applications in all areas of air navigation, be they civil or military, spanning from air traffic control and regulation at civilian airports to anti-aircraft weapon handling and guidance for military purposes.1, 18 The system presented in this thesis is an alternative implementation of identifying and tracking flying objects, which benefits from the optical spectrum by using an optical camera built into a servo motor (pan-tilt unit). More specifically, through the purpose-developed software, when a target (aircraft) enters the field of view of the camera18, it is both detected and identified.5, 22 Then the servo motor, being provided with data on target position and velocity, tracks the aircraft while it is in constant communication with the camera (Fig. 1). All the features are so designed as to operate under real time conditions.

  9. 基于物联网技术的设施农业自动控制系统%Networking technology based automatic control system of agricultural facilities

    Institute of Scientific and Technical Information of China (English)

    李金莹; 张日升; 杨宏业; 宣传忠

    2014-01-01

    针对农户对基于物联网技术农业大棚的迫切需求,通过农业大棚与物联网技术、WIFI与3G等通信技术相互结合的方式,完成了农业大棚系统总体构架设计的每个模块功能与器件选型,实现了设施农业自动控制系统的整体功能,这样既减少了用户的人力与精力投入,又提高了产品的质量与品质,为用户获得了更多的增值创收;同时通过基于物联网技术的设施农业大棚的推广应用,给经销商带来了源源不断的收益;也促使了当地政府更好的服务于三农,很好的塑造了地方农业品牌与产业升级,更大程度的惠及了广大农户。%Aiming at the urgent demand of farmers on the Internet of things technology based agricultural greenhouse, the greenhouse and the technology of the Internet of things, WIFI and 3G communication technology in conjunction with each other, to complete the function of architecture design of agricultural greenhouse system each module and device selection, the facility agriculture overall function of the automatic control system, thus reducing human and energy user input, and improve the quality of products and quality, for the user to gain more value-added income;at the same time, through the promotion of application of the Internet of things technology facilities based on agricultural greenhouse, brought a revenue stream to the dealer; also prompted the local government to better serve the agriculture, good shape. Brand agricultural and industrial upgrading, greater benefit farmers.

  10. 基于anti-windup技术的四旋翼模糊PID控制%Fuzzy PID Control of Quad-Rotor Aircraft Based on Anti-windup Technology

    Institute of Scientific and Technical Information of China (English)

    耿玉豪; 肖文生; 崔俊国; 王鸿雁

    2016-01-01

    When quad-rotor aircraft is trapped in the great disturbance of wind, windup phenomenon may appear for simple PID controller, under the combined action of integration element and saturation limit element. Thus may lead to deterioration of system’s dynamic responses, and big overshoot or imbalance of quad-rotor. A dynamics simulation model is established for the quad-rotor aircraft, and the causes of windup phenomenon are analyzed. An anti-windup PID controller with fuzzy variable parameters is designed to alleviate the windup phenomenon. Contrastive analysis is made to the controller with the existing fuzzy PID controller and the anti-windup PID controller with constant parameters. The results of simulation indicate that, the fuzzy PID controller based on anti-windup technology can effectively restrain the windup phenomenon, and speed up the attitude adjustment process of quad-rotor.%四旋翼飞行器在受到风力等大扰动的情况下,单纯的PID控制受到积分环节和饱和限幅环节的共同作用,容易产生windup现象,系统动态响应变差,造成飞行器大超调甚至失调。通过建立四旋翼飞行器的动力学仿真模型,分析了windup现象产生的原因,设计了参数模糊可变的anti-windup PID控制器,用于缓解windup现象。对比分析了该控制器与现有的模糊PID控制器、参数为定值的anti-windup PID控制器的性能,仿真结果表明,基于anti-windup技术的模糊PID控制器,能够更加有效地抑制windup现象,加快飞行器的姿态调节过程。

  11. Systematic observations of Volcán Turrialba, Costa Rica, with small unmanned aircraft and aerostats (UAVs): the Costa Rican Airborne Research and Technology Applications (CARTA) missions

    Science.gov (United States)

    Pieri, D. C.; Diaz, J. A.; Bland, G.; Fladeland, M. M.; Abtahi, A.; Alan, A., Jr.; Alegria, O.; Azofeifa, S.; Berthold, R.; Corrales, E.; Fuerstenau, S.; Gerardi, J.; Herlth, D.; Hickman, G.; Hunter, G.; Linick, J.; Madrigal, Y.; Makel, D.; Miles, T.; Realmuto, V. J.; Storms, B.; Vogel, A.; Kolyer, R.; Weber, K.

    2014-12-01

    For several years, the University of Costa Rica, NASA Centers (e.g., JPL, ARC, GSFC/WFF, GRC) & NASA contractors-partners have made regular in situ measurements of aerosols & gases at Turrialba Volcano in Costa Rica, with aerostats (e.g., tethered balloons & kites), & free-flying fixed wing UAVs (e.g., Dragon Eye, Vector Wing 100, DELTA 150), at altitudes up to 12.5Kft ASL within 5km of the summit. Onboard instruments included gas detectors (e.g., SO2, CO2), visible & thermal IR cameras, air samplers, temperature pressure & humidity sensors, particle counters, & a nephelometer. Deployments are timed to support bimonthly overflights of the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) onboard the NASA Terra satellite (26 deployments to date). In situ observations of dilute plume SO2 concentrations (~1-20ppmv), plume dimensions, and associated temperature, pressure, & humidity profiles, validate detailed radiative transfer-based SO2 retrievals, as well as archive-wide ASTER band-ratio SO2 algorithms. Our recent UAV-based CO2 observations confirm high concentrations (e.g., ~3000ppmv max at summit jet), with 1000-1500ppmv flank values, and essentially global background CO2 levels (400ppmv) over distal surroundings. Transient Turrialba He detections (up to 20ppmv) were obtained with a small (~10kg) airborne mass spectrometer on a light aircraft—a UAV version (~3kg) will deploy there soon on the UCR DELTA 500. Thus, these platforms, though small (most payloads measurements of potential eruption hazards, as well as of volcano processes. Because they are economical, flexible, and effective, such platforms promise unprecedented capabilities for researchers and responders throughout Central and South America, undertaking volcanic data acquisitions uniquely suited to such small aircraft in close proximity to known hazards, or that were previously only available using full-sized manned aircraft. This work was carried out, in part, at the Jet

  12. Proceedings of the first International workshop on robotics and associated high-technologies and equipment por agriculture (RHEA-2011)

    OpenAIRE

    RHEA Consortium

    2011-01-01

    These proceedings are the result of the work developed by the RHEA consortium throughout the first year of the RHEA project (Robot fleets for highly effective agriculture and forestry management-FP7-NMP 245986). RHEA comprises a number of research centres, universities, and companies funded by the European Commission through the Seventh Framework Programme to develop robotic fleets for weed control and pesticide management in agriculture and forestry.

  13. Globalization, the rise of biotechnology and catching up in agricultural innovation: The case of Bt technology in India

    OpenAIRE

    Iizuka, M.; Thutupalli, A.

    2014-01-01

    The agricultural sector has played an important role in the provision of food, foreign exchange and sustainable energy to many developing countries. This sector, however, has not been considered as a driving force of innovation as compared to other productive sectors. However, recent economics and international business literature suggests that the agricultural sector (1) has become knowledge intensive with the rise of biotechnology (Bt); and (2) is a sector where firms in developing countrie...

  14. 基于功能分区的国家农业科技园区规划研究--以望城国家农业科技园为例%Study on National Agricultural Science and Technology Park Planning Based on Functional Areas---Wangcheng National Agricultural Science and Technology Park as Example

    Institute of Scientific and Technical Information of China (English)

    喻璐颖; 杨君

    2016-01-01

    国家级农业科技园是当前正在迅速兴起的实现农业现代化的有效形式之一,兼顾农产品生产、农业高新技术示范、种苗繁育技术示范培训及旅游观光等多种功能。湖南望城国家农业科技园是我国第一批批准成立的国家级农业科技园。自2011年望城县撤县变区后,望城区成为长沙市的重要组成部分,也成为了全国唯一一个以整个行政区域作为科技园区的国家级农业科技园,而其功能定位与分区、产业结构等则需要与长沙市区进行匹配整合协调。本文以望城国家级农业科技园为例,根据其既是行政区又是农业园区的特点,协调相关规划,对其功能定位以及功能分区进行研究探讨,并据此指导园区的规划布局。%National agricultural science and Technology Park is one of the effective forms to realize agricultural modernization which growing rapidly at present. Combining a variety of functions about agricultural production, Agricultural high-tech demonstration, Training of seedling breeding technology demonstration and tourism. Hunan Wangcheng national agricultural science and Technology Park is the first batch was approved in our country. From 2011 withdraw county into administrative region, Wangcheng region become an important part in the city of Changsha, and also become the only one national agricultural science and Technology Park which as science and Technology Park in the whole administrative areas, so the function orientation and partition, industrial structure etc. must coordinate matching integration with urban area of Changsha. Wangcheng national agricultural science and Technology Park as an example in this paper, on the basis of the characteristics of both administrative region and the agricultural park, coordinate related planning, studying its function orientation and the functional partition, and to guide the park planning and layout.

  15. 76 FR 31823 - Regulation of Fractional Aircraft Ownership Programs and On-Demand Operations; Technical Amendment

    Science.gov (United States)

    2011-06-02

    ... Afghanistan, Agriculture, Air traffic control, Aircraft, Airmen, Airports, Aviation safety, Canada, Cuba, Ethiopia, Freight, Mexico, Noise control, Political candidates, Reporting and recordkeeping...

  16. Using Soil Conservation Strategies in the Development of Learning Activities for the Students of Roi - Et College of Agriculture and Technology

    Directory of Open Access Journals (Sweden)

    Jariya Kanchanwong

    2017-06-01

    Full Text Available The purposes of this research were 1 to study nutrient content in soil samples taken from Roi - Et College of Agriculture and Technology Campus, 2 to study the social factors, economic factors and technological factors the effect on soil conservation of Roi - Et College of Agriculture and Technology students, 3 the development of soil conservation activities Learning package efficiency of 80/80, 4 to Study and to compare the knowledge, attitudes and skills regarding soil conservation of students of Roi - Et College of Agriculture and Technology. The student activities package of learning soil conservation was enrolled by 40 people in its club. These people were selected by purposive sampling. The instruments were used in this research as follows; 1 scientific analysis, 2 social questionnaire on economic and technological factors affecting soil conservation, 3 test of knowledge about soil conservation, 4 test of attitudes about soil conservation, 5 test of skill about soil conservation. The experimental research was designed to use students as key informants. The statistics analysis was used in the research as follows: frequency, percentage, average, standard deviation, test results, assumptions which included a dependent t-test statistical at the significance level of 0.05. The results of the study were as follows: 1 The study found that the amount of soil nutrient content (N: P: K around cultivated plants in an area of converted agriculture land have the significance: Soil checks collected in plots from soil containing morning glory, chrysanthemums, marigolds, corn and cassava, and had neutral pH. 2 The results of the analysis determing the factors that affected the conservation of soil found economic factors were at a high level Social factors and technology factors were moderate thus leading the approach that has come to create of learning activities package in soil conservation. 3 The results showed that the efficiency of the manual was 83

  17. Factors Influencing the Use of and Attitude of using Information and Communication Technologies (ICTs in Agricultural Extension, a Study in the Isfahan Province of Iran

    Directory of Open Access Journals (Sweden)

    Zahra Haji Hashemi

    2014-03-01

    Full Text Available Information and communication technologies (ICTs are increasingly influencing human beings and are changing our attitudes towards these technologies. The purpose of this article is to understand the factors influencing the use of ICTs in agricultural extension through a descriptive research method. The populations were 320 individuals of agricultural Extension Workers (EWs of Isfahan province that 200 people selected as a research sample. The reliability of self-completion questionnaire according to pilot test and calculating Cronbach's alpha for four part of the instrument was 82.6 - 87.8. The results revealed that the EWs have a positive attitude toward using ICT. They mostly viewed it as a useful tool for extension, which can potentially save money and time and extension. On the ranking of principal areas of applying ICTs by EWs “typing letters/report”, “prepare and protect file on process basic agricultural and rural information”, had most usage. The main result of the study revealed that the EWs approximately use ICT quite a bit. Also, the EWs with high school diploma degree used ICT less than the EWs with MSc degree and the EWs with 5 years and less experience had higher ICT application than the EWs with 15-16 year experience.

  18. The Connotation of Green Maintenance Technology of Agricultural Machinery and Implementation%农业机械绿色维修技术的内涵与实施

    Institute of Scientific and Technical Information of China (English)

    霍玉华

    2015-01-01

    The agricultural machinery maintenance technology is a modern maintenance mode considering the environ-mental impact and resource use efficiency.Agricultural machinery green maintenance environment realizes effective economic and social benefits by using advanced technology and method,which not only improves the use of mechanical cycle and life span,reduces cost and increases the added value of agricultural machinery products,even can drive the comprehensive devel-opment and the revitalization of industry,or enterprise.%农业机械绿色维修技术,就是综合考虑环境影响和资源利用效率的现代维修模式。农机绿色维修采用先进的技术和方法实现环境、经济和社会效益三者的有效平衡和协调,不仅提高了机械的使用周期和寿命,降低了成本还增加了农业机械的产品附加值,甚至可以带动整个行业或企业的全面发展和振兴。

  19. 基于转变农业发展方式的基层农业技术推广路径选择%Research on the choices to agricultural technology extension ways based on the changing of agricultural development means

    Institute of Scientific and Technical Information of China (English)

    邵腾伟; 吕秀梅

    2013-01-01

    This article establishes models and gives examples to explain why the effect of traditional bureaucracy broadcasting of agricultural technology extension is getting worse, while the experience broadcasting can effectively meet the farmers' needs of agricultural technology, and the effect of agricultural technology extension is better. The research is helpful for improvement on the service of agricultural technology extension.%理论并实证了我国现行以组织传播路径为主的农业技术推广效果差,而以体验传播路径为主的农业技术推广将有效衔接科技部门的技术创新与农民的技术需求,因而推广效果好.研究成果可为改进我国农业技术推广服务提供决策参考.

  20. 搞好农机技术推广的对策和措施%A Study on Countermeasures and Measures to Do well in The Promotion of Agricultural Machinery Technology

    Institute of Scientific and Technical Information of China (English)

    邓芬

    2015-01-01

    As a great traditional agricultural country,our country has accumulated rich experience in agricultural production, and has possessed competent production skills,in the long-term agricultural production process,the mechanization level has not been effectively promoted,there are still many defects and shortcomings,which seriously hindered the development of agricultural technology,as a result,to do well in the promotion of agricultural machinery technology,improve agricultural technology,improve the promotion system,improve agricultural technology level,are necessity for the development of modern agriculture.%作为传统农业大国,我国在农业生产方面已经积累了丰富的经验,具备了较强的生产技能,在长期的农业生产过程中,机械化水平尚未得到有效提升,还存在很多缺陷和不足,严重阻碍了我国农业技术的发展,所以,搞好农机技术的推广工作,完善推广体系,提升农机技术水平,是现代化农业发展的必经之路.

  1. Improvements in Aircraft Gas Turbine Engines for the 90s

    Directory of Open Access Journals (Sweden)

    Arun Prasad

    1993-10-01

    Full Text Available The gas turbine propulsion system has been playing the most significant role in the evolution and development of present-day aircraft, and has become the limiting technology for developing most new aircraft. However, the jet engine still remains the preferred propulsion choice. Aircraft gas turbines in one form or the other, viz. turbojet, turbofan, turboprop or turboshaft, have been used in commercial passenger aircraft, high performance military aircraft and in rotary wing aircraft (helicopters. The emphasis in engine development programmes world over seems to be in reducing fuel consumption, increasing thrust and in reducing weight.

  2. Implementation monitoring temperature, humidity and mositure soil based on wireless sensor network for e-agriculture technology

    Science.gov (United States)

    Sumarudin, A.; Ghozali, A. L.; Hasyim, A.; Effendi, A.

    2016-04-01

    Indonesian agriculture has great potensial for development. Agriculture a lot yet based on data collection for soil or plant, data soil can use for analys soil fertility. We propose e-agriculture system for monitoring soil. This system can monitoring soil status. Monitoring system based on wireless sensor mote that sensing soil status. Sensor monitoring utilize soil moisture, humidity and temperature. System monitoring design with mote based on microcontroler and xbee connection. Data sensing send to gateway with star topology with one gateway. Gateway utilize with mini personal computer and connect to xbee cordinator mode. On gateway, gateway include apache server for store data based on My-SQL. System web base with YII framework. System done implementation and can show soil status real time. Result the system can connection other mote 40 meters and mote lifetime 7 hours and minimum voltage 7 volt. The system can help famer for monitoring soil and farmer can making decision for treatment soil based on data. It can improve the quality in agricultural production and would decrease the management and farming costs.

  3. Globalization, the rise of biotechnology and catching up in agricultural innovation: The case of Bt technology in India

    NARCIS (Netherlands)

    Iizuka, M.; Thutupalli, A.

    2014-01-01

    The agricultural sector has played an important role in the provision of food, foreign exchange and sustainable energy to many developing countries. This sector, however, has not been considered as a driving force of innovation as compared to other productive sectors. However, recent economics and i

  4. THE USE OF CHEMICALS IN THE FIELD OF FARM ANIMAL HEALTH (NUTRITION, ENTOMOLOGY, PATHOLOGY). AGRICULTURAL CHEMICALS TECHNOLOGY, NUMBER 7.

    Science.gov (United States)

    Ohio State Univ., Columbus. Center for Vocational and Technical Education.

    DEVELOPED BY A NATIONAL TASK FORCE ON THE BASIS OF STATE STUDIES, THIS MODULE IS ONE OF A SERIES DESIGNED TO ASSIST TEACHERS IN PREPARING POST-SECONDARY STUDENTS FOR AGRICULTURAL CHEMICAL OCCUPATIONS. THE SPECIFIC OBJECTIVE OF THIS MODULE IS TO PREPARE TECHNICIANS IN THE FIELD OF THE USE OF CHEMICALS FOR ANIMAL HEALTH. SECTIONS INCLUDE -- (1)…

  5. Potential Impact of Alternative Agricultural Technologies to Ensure Food Security and Raise Income of Farm Households in Rwanda

    NARCIS (Netherlands)

    Bidogeza, J.C.; Berentsen, P.B.M.; Graaff, de J.; Oude Lansink, A.G.J.M.

    2015-01-01

    Rapid population growth and stagnation of agricultural yields in Rwanda have caused a steady decline in food production per capita, a continuous expansion towards the use of marginal land and a strong degradation of land. The challenge of simultaneously achieving food security, rural welfare, land

  6. Impacts of a Faculty Abroad Experience on Teaching Style and Technology Use in a College of Agriculture and Life Sciences

    Science.gov (United States)

    Sandlin, M'Randa R.; Murphrey, Theresa Pesl; Lindner, James R.; Dooley, Kim E.

    2013-01-01

    Faculty abroad programs are becoming a popular method to provide faculty in colleges of agriculture with international experiences so they may internationalize their curricula. These programs also serve to provide experiential faculty development opportunities. Eight faculty members from Texas A&M University participated in a faculty abroad…

  7. Advanced aircraft electric power system

    Energy Technology Data Exchange (ETDEWEB)

    Segrest, J.D.

    1981-01-01

    The role of electric energy in both military and commercial aircraft increases in importance with every advancement in airframe performance and avionic technology. Microcircuits and volatile memories impact power continuity and quality, digital flight control and stability augmentation require high reliability. This paper presents the system concept, hardware development and status of the Navy program.

  8. Unmanned Aircraft Systems - Digital Elevation Model

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The USGS National Unmanned Aircraft Systems (UAS) Project Office utilizes UAS technology for collecting remote sensing data on a local scale. Typical UAS projects...

  9. Model Updating in Online Aircraft Prognosis Systems Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Diagnostic and prognostic algorithms for many aircraft subsystems are steadily maturing. Unfortunately there is little experience integrating these technologies into...

  10. Theme: Future Programs of Agricultural Education.

    Science.gov (United States)

    Lee, Jasper S.; And Others

    1985-01-01

    This issue, focusing on future programs of agricultural education, includes articles on the future of agriculture, bioelectronics, secondary programs, technical education in agriculture, young and adult farmer programs, instructional technology, and expanding opportunities for women. (CT)

  11. 浅谈静液压技术在农业机械中的应用现状与发展趋势%Application status and development trend of hydrostatic technology in agricultural machinery

    Institute of Scientific and Technical Information of China (English)

    陈恒峰; 郭辉; 张学军; 盛会

    2016-01-01

    文中介绍了静液压技术的主要特点,在农业机械中使用静液压技术的优势以及国内外静液压技术在农业机械中应用现状及发展趋势。%This text introduces the main characteristics of hydrostatic technology, explains the advantages of application of hydrostatic technology on agricultural mechinery, reviews the application satus of hydrostatic technology on agricultural mechinery at home and aboard and forcasts the development trend of hydrostatic technology.

  12. Contemporary methods for realization and estimation of efficiency of 3Daudio technology application for sound interface improvement of an aircraft cabin

    Directory of Open Access Journals (Sweden)

    O. N. Korsun

    2014-01-01

    Full Text Available High information load of crew is one of the main problems of modern piloted aircraft therefore researches on approving data representation form, especially in critical situations are a challenge. The article considers one of opportunities to improve the interface of a modern pilot's cabin i.e. to use a spatial sound (3D - audio technology. The 3D - audio is a technology, which recreates a spatially directed sound in earphones or via loudspeakers. Spatial audio-helps, which together with information on danger will specify also the direction from which it proceeds, can reduce time of response to an event and, therefore, increase situational safety of flight. It is supposed that helps will be provided through pilot's headset therefore technology realization via earphones is discussed.Now the main hypothesis explaining the human ability to recognize the position of a sound source in space, asserts that the human estimates distortion of a sound signal spectrum at interaction with the head and an auricle depending on an arrangement of the sound source. For exact describing the signal spectrum variations there are such concepts as Head Related Impulse Response (HRIR and Head Related Transfer Function (HRTF. HRIR is measured in humans or dummies. At present the most full-scale public HRIR library is CIPIC HRTF Database of CIPIC Interface Laboratory at UC Davis.To have 3D audio effect, it is necessary to simulate a mono-signal conversion through the linear digital filters with anthropodependent pulse characteristics (HRIR for the left and right ear, which correspond to the chosen direction. Results should be united in a stereo file and applied for reproduction to the earphones.This scheme was realized in Matlab, and the received software was used for experiments to estimate the quantitative characteristics of technology. For processing and subsequent experiments the following sound signals were chosen: a fragment of the classical music piece "Polovetsky

  13. Empirical support for global integrated assessment modeling: Productivity trends and technological change in developing countries' agriculture and electric power sectors

    Energy Technology Data Exchange (ETDEWEB)

    Sathaye, Jayant A.

    2000-04-01

    Integrated assessment (IA) modeling of climate policy is increasingly global in nature, with models incorporating regional disaggregation. The existing empirical basis for IA modeling, however, largely arises from research on industrialized economies. Given the growing importance of developing countries in determining long-term global energy and carbon emissions trends, filling this gap with improved statistical information on developing countries' energy and carbon-emissions characteristics is an important priority for enhancing IA modeling. Earlier research at LBNL on this topic has focused on assembling and analyzing statistical data on productivity trends and technological change in the energy-intensive manufacturing sectors of five developing countries, India, Brazil, Mexico, Indonesia, and South Korea. The proposed work will extend this analysis to the agriculture and electric power sectors in India, South Korea, and two other developing countries. They will also examine the impact of alternative model specifications on estimates of productivity growth and technological change for each of the three sectors, and estimate the contribution of various capital inputs--imported vs. indigenous, rigid vs. malleable-- in contributing to productivity growth and technological change. The project has already produced a data resource on the manufacturing sector which is being shared with IA modelers. This will be extended to the agriculture and electric power sectors, which would also be made accessible to IA modeling groups seeking to enhance the empirical descriptions of developing country characteristics. The project will entail basic statistical and econometric analysis of productivity and energy trends in these developing country sectors, with parameter estimates also made available to modeling groups. The parameter estimates will be developed using alternative model specifications that could be directly utilized by the existing IAMs for the manufacturing

  14. Taking Technological Innovation as Origin of Modern Agricultural Building:An Example of Heilongjiang Province%科技创新是现代农业建设之本——以黑龙江省为例

    Institute of Scientific and Technical Information of China (English)

    赫修贵

    2012-01-01

    黑龙江省提出了力争用10年左右时间在全国率先实现农业现代化目标。目前,黑龙江省农业现代化进程加速,2011年,粮食产量、商品量和绿色食品产量均居全国第一,科技创新起了巨大作用。黑龙江省农业人才资源丰富,有著名东北农业大学等农业高等院校,是黑龙江省加快农业科技创新的智力源泉。作为中国第一农业大省,加快现代农业建设,必须加快农业科技的自主创新和引进吸收的再创新,必须加快农业科技重点领域的创新,必须加强农业科技教育与人才培养,必须加快基层农业技术推广服务新体系建设,必须加速建立完善农业科技创新管理体制。%Heilongjiang Province strives to use about 10 years' time to achieve the goal of agriculture modernization as the leader role in China.At present,Heilongjiang Province accelerates the process of agricultural modernization.In 2011,the grain output,the amount of goods and green food production ranked the first in China.In this process,science and technology innovation played the tremendous role.Heilongjiang Province has rich human resources in agriculture,where has the famous Northeast Agricultural University and other agricultural institutions,which contribute to provide a source of intelligence for Heilongjiang Province to speed up agricultural science and technology innovation.As China's major agricultural province,to speed up the construction of modern agriculture,we must accelerate the innovation of agricultural science and technology and to absorb the new information based on what we have introduced and then create a new absorption;accelerate the innovation in the field of agricultural science and technology;strengthen the agricultural science and technology education and personnel training;accelerate the grass-root agricultural technology to promote the construction of a new system;and accelerate the establishment and improvement of agricultural

  15. THE DESIGN OF INSTALLATION AGRICULTURE TECHNOLOGY MARKUP LANGUAGE AND SCHEMA%设施农业技术标记语言及其Schema的设计

    Institute of Scientific and Technical Information of China (English)

    陈桦; 杨悦欣; 孙波

    2005-01-01

    详细讨论了如何基于XML来定义一套用于描述设施农业技术的特定领域的标记语言--IATML(Installation Agriculture Technology Markup Language),在元语言XML的基础上对设施农业技术的基本构成元素进行了分析、定义,建立了IATMLSchema,规范了设施农业技术的描述.

  16. Introduction to unmanned aircraft systems

    CERN Document Server

    Marshall, Douglas M; Hottman, Stephen B; Shappee, Eric; Most, Michael Thomas

    2011-01-01

    Introduction to Unmanned Aircraft Systems is the editors' response to their unsuccessful search for suitable university-level textbooks on this subject. A collection of contributions from top experts, this book applies the depth of their expertise to identify and survey the fundamentals of unmanned aircraft system (UAS) operations. Written from a nonengineering civilian operational perspective, the book starts by detailing the history of UASs and then explores current technology and what is expected for the future. Covering all facets of UAS elements and operation-including an examination of s

  17. The Agricultural Technology Progress of Population Production Preference Transformation%人口生产偏好转变下的农业技术进步

    Institute of Scientific and Technical Information of China (English)

    张福; 杨盛

    2012-01-01

    市场化改革以来,中国农村居民的人口生产发生了由高生育率、低人力资本积累率向低生育率、高人力资本积累率的明显转变。这一转变通过农业从业人员数量下降、农村劳动力人力资本水平的提高以及农业物质资本积累的加速,有力地推动了农业技术进步。%Since the market reformed,the population production of China' s rural residents happened the apparent change from high fertility rate, low human capital accumulation to low fertility rate, high human capital accumulation. By the quantity of agricultural labourer declining, the human capital level of the rural labor force raising and the agricultural material capital accumulation accelerating, this transformation effectively promoted the agricultural technology progress.

  18. Strengthen the innovation of agricultural information technology and service capacity of public service information%加强农业信息科技创新与公益信息服务能力的思考

    Institute of Scientific and Technical Information of China (English)

    刘 珺

    2012-01-01

    农业信息科技创新是促进现代农业发展、增加农民收入的重要途径,在农业科技中具有重要的引领和支撑作用。要大力加强农业信息技术的创新,提升农业社会化公共信息服务能力。%The innovation of agricultural information technology which plays an important role on leading and supporting in agricultural science and technology is an important way to promote the development of modem agriculture and to increase farmers' income. We should vigorously strengthen the innovations in agricultal information technology, to enhance capability of public information service for the socialization of agriculture.

  19. 新时期中国农业科技人才激励机制探析%Incentive Mechanism of China's Agricultural Science and Technology Talents in the New Era

    Institute of Scientific and Technical Information of China (English)

    闫晓丽

    2016-01-01

    In recent years, Chinese agriculture has maintained a good momentum of development, and is in the golden period of economic transformation, at the same time, new formats, new mode, new technology and new field of agriculture emerge in an endless stream, which need to encourage new agricultural science and technology talents to develop more high-tech modern agriculture. The talent incentive mechanism is a key factor influencing agricultural science and technology talents to effectively play a role and the construction and development of agricultural science and technology innovation team. Through analyzing the status quo, influence factors and problems of current China's agricultural science and technology talents, the author put forward some main countermeasures for innovating the incentive mechanism of China's agricultural science and technology talents in the new era.%近年来,中国农业保持良好发展势头,目前正处于经济转型的黄金时期,农业新业态、新模式、新技术、新领域层出不穷,亟需激励新型农业科技人才发展更高科技型的现代农业。人才激励机制是影响农业科技人才有效发挥作用及农业科技创新团队建设发展的关键因素,通过分析当前中国农业科技人才现状、影响因素及存在问题,提出了新时期创新农业科技人才激励机制的主要对策。

  20. Information technology and innovative drainage management practices for selenium load reduction from irrigated agriculture to provide stakeholder assurances and meet contaminant mass loading policy objectives

    Energy Technology Data Exchange (ETDEWEB)

    Quinn, N.W.T.

    2009-10-15

    Many perceive the implementation of environmental regulatory policy, especially concerning non-point source pollution from irrigated agriculture, as being less efficient in the United States than in many other countries. This is partly a result of the stakeholder involvement process but is also a reflection of the inability to make effective use of Environmental Decision Support Systems (EDSS) to facilitate technical information exchange with stakeholders and to provide a forum for innovative ideas for controlling non-point source pollutant loading. This paper describes one of the success stories where a standardized Environmental Protection Agency (EPA) methodology was modified to better suit regulation of a trace element in agricultural subsurface drainage and information technology was developed to help guide stakeholders, provide assurances to the public and encourage innovation while improving compliance with State water quality objectives. The geographic focus of the paper is the western San Joaquin Valley where, in 1985, evapoconcentration of selenium in agricultural subsurface drainage water, diverted into large ponds within a federal wildlife refuge, caused teratogenecity in waterfowl embryos and in other sensitive wildlife species. The fallout from this environmental disaster was a concerted attempt by State and Federal water agencies to regulate non-point source loads of the trace element selenium. The complexity of selenium hydrogeochemistry, the difficulty and expense of selenium concentration monitoring and political discord between agricultural and environmental interests created challenges to the regulation process. Innovative policy and institutional constructs, supported by environmental monitoring and the web-based data management and dissemination systems, provided essential decision support, created opportunities for adaptive management and ultimately contributed to project success. The paper provides a retrospective on the contentious planning

  1. Research on Technologies of Knowledge Acquisition for Agricultural Intelligent System%农业智能系统的知识获取技术研究

    Institute of Scientific and Technical Information of China (English)

    熊范纶; 董俊

    2012-01-01

    A series of studies on knowledge acquisition technology for agriculture domain have been accomplished by the authors and their team for a long term. The artificial and automatic/semi-automatic knowledge acquisition methods using intelligent leading, machine learning, data mining and intelligent computing etc. are described. These methods can acquire domain knowledge more effectively, discovery the potential patterns, and refine the knowledge. And the tools for knowledge acquisition are developed. The methods and the tools show that the knowledge acquisition technology plays an important role in information engineering of agriculture.%作者及其团队长期针对农业领域的知识获取技术进行了系列性研究.阐述了运用智能引导、机器学习、数据挖掘、智能计算等技术的人工和自动/半自动的知识获取方法.这些方法能够有效地获取领域知识,发现隐含模式,进行知识精化.研发了知识获取工具.这些方法和工具反映了知识获取技术对农业信息工程所起的重要作用.

  2. High Resolution Airborne Digital Imagery for Precision Agriculture

    Science.gov (United States)

    Herwitz, Stanley R.

    1998-01-01

    The Environmental Research Aircraft and Sensor Technology (ERAST) program is a NASA initiative that seeks to demonstrate the application of cost-effective aircraft and sensor technology to private commercial ventures. In 1997-98, a series of flight-demonstrations and image acquisition efforts were conducted over the Hawaiian Islands using a remotely-piloted solar- powered platform (Pathfinder) and a fixed-wing piloted aircraft (Navajo) equipped with a Kodak DCS450 CIR (color infrared) digital camera. As an ERAST Science Team Member, I defined a set of flight lines over the largest coffee plantation in Hawaii: the Kauai Coffee Company's 4,000 acre Koloa Estate. Past studies have demonstrated the applications of airborne digital imaging to agricultural management. Few studies have examined the usefulness of high resolution airborne multispectral imagery with 10 cm pixel sizes. The Kodak digital camera integrated with ERAST's Airborne Real Time Imaging System (ARTIS) which generated multiband CCD images consisting of 6 x 106 pixel elements. At the designated flight altitude of 1,000 feet over the coffee plantation, pixel size was 10 cm. The study involved the analysis of imagery acquired on 5 March 1998 for the detection of anomalous reflectance values and for the definition of spectral signatures as indicators of tree vigor and treatment effectiveness (e.g., drip irrigation; fertilizer application).

  3. 六盘水市农业科技园区发展现状、问题及路径选择%THE ISSUE AND PATH SELECTION OF THE AGRICULTURE SCIENCE AND TECHNOLOGY PARK OF LIUPANSHUI CITY

    Institute of Scientific and Technical Information of China (English)

    饶华敏

    2015-01-01

    China's urbanization and industrialization process greatly accelerated leading to continued sharp contra-diction between people, food, environment and resource issues increasingly prominent. Traditional extensive mode of agricultural production is facing a great challenge, to intensive and efficient modern production direction of change has become an inevitable trend of China's agricultural development. Agricultural high-tech as the support of agricultural science and technology park in order to increase agricultural productivity, optimize the industrial structure of agriculture, promote agricultural production and new technologies, protection of agricultural ecological environment for the purpose, for the development of agricultural industry has played a positive role in promoting ra-diation. Liupanshui City, Guizhou Province as a strong agriculture, agricultural science and technology park con-struction work has achieved initial results, but is still in the exploratory stage of development, it has not yet formed a complete construction of the park system. Agricultural Science and Technology Park as an important carrier of modern agricultural development, the use of modern agricultural knowledge and technology and the concept of opti-mization of agricultural structure adjustment has played a positive role in promoting agricultural development and farmers' income, the effective realization of the integration of regional resources, promote regional industrial restruc-turing and transformation of economic growth mode. As a new thing, the construction and development of agricul-tural science and technology park is still facing low economic efficiency, management level is not high, technology promotion blocked, poor circulation, and many other financial issues. Liupanshui City, Guizhou Province as a strong agriculture, agricultural science and technology park construction work has achieved initial results, but is still in the exploratory stage of development, it has

  4. Discussion on the Feasibility of Public Service of Agricultural Science and Technology Information Services%我国农业科教信息服务公益化可行性探讨

    Institute of Scientific and Technical Information of China (English)

    白玉宝

    2011-01-01

    According to the development of agricultural science and education,information services and promotion,combined with the agricultural technology development plan of the State Science and Technology,Ministry of Agriculture,the strategy of providing agricultural science and technology information for the agriculture production engager in the new era was discussed.According to China's actual conditions,It was pointed out the urgency of improving the agricultural population quality,as well as the feasibility and necessity of providing the public agricultural information service.%针对目前我国农业科教信息服务发展和推广的现状,结合国家科委、农业部有关农业科技发展规划,探讨了新时期农业科教信息为一线农业提供服务的方式,根据我国的实际国情,提出了未来农业人口整体素质提高的迫切性,实现农业信息服务公益化的可行性和必要性。

  5. Research on the Different Surfaces of Aircraft Space Truss Type Weldment Manufacturing Technology%关于飞机空间异面桁架类焊接件制造技术的研究

    Institute of Scientific and Technical Information of China (English)

    李晓宁; 肖望东; 王声; 黄蓉; 张大均

    2016-01-01

    The winglet rack of a certain type of aircraft is as an example to present a typical spatial plane truss welding manufacturing method and way .Through the description of a certain type of aircraft wing pylon structure characteristic ,in-troduce the process of a certain type of aircraft wing pylons ,industry and trade dress design idea ,and how to use reverse measurement technology to resolve the difficulties in the process of development ,and finally achieve a certain type of aircraft wing pylons delivery and assembly .Its successful development provides the valuable experience for the manufacture of wel-ded assemblies of space plane truss structures ,which is of great reference value for the development of space plane truss type welding parts .%以某型机小翼挂架为例,研究了一种典型的空间异面桁架类焊接件制造方法与途径.通过对某型机小翼挂架结构特点的描述,详细介绍了某型机小翼挂架的工艺方法、工装设计思路,以及如何利用逆向测量技术解决研制过程中的难点,最终实现某型机小翼挂架的交付与装配.它的成功研制为空间异面类桁架结构焊组件的制造提供了宝贵的经验,对空间异面桁架类焊接件的研制具有借鉴与指导意义.

  6. Aircraft health management ground system failure prediction technology based on TTF%基于 TTF的飞机健康管理地面系统预测技术

    Institute of Scientific and Technical Information of China (English)

    高泽海; 宋东; 姜南

    2013-01-01

    为了解决传统飞机的机内自测试和定期维修的不足,应用飞机健康管理技术,通过故障预测,以达到预防性维修目的。研究了基于TTF的飞机健康管理地面系统预测技术,通过建立维护信息( MMSG )和故障信息的预测关系,计算从出现维护信息到出现驾驶舱效应( FDE )的时间间隔TTF( Time to FDE),进行故障预测。设计并实现了飞机健康管理地面系统故障预测系统,并进行了验证。%In order to solve the disadvantages of traditional aircraft built -in-test and regular main-tenance , the application of the aircraft health management technology and the failure prediction , in order to achieve the purpose of preventive maintenance , aircraft health management ground system failure pre-diction techniques based on TTF is researched , through the establishment of maintenance information ( MMSG) and fault information prediction relationship , calculated from the maintenance message appears to occur flight deck effect ( FDE) intervals TTF ( Time to FDE) for failure prediction .Design and imple-mentation of the aircraft health management ground failure prediction system , and verified .

  7. 浅议覆膜保墒旱作节水农业技术%Film Preservation of Soil Moisture Water-saving Agricultural Technology

    Institute of Scientific and Technical Information of China (English)

    邵晓林

    2013-01-01

    Laminating moisture conservation technology is an important scientific and technological support for the development of water-saving agriculture. Including the autumn coated and early spring laminating coating in the modern sense of the soil moisture water-saving agricultural technology in the coating time semi film coverage and film coverage, including in the coating way to stay membranes, including the extension of the cover film using with stubble wintering and a film two years. Compared with the traditional plastic film cover cropping, the modern coating soil moisture water-saving agriculture technology to achieve the basic "five changes": GM crops sowing date coating for the fall or early spring coating change semimembranosus coverage for the whole film coverage, change a film for a film two years with a one-year change ridge surface level multicast double furrow sowing, five changed almost all planting corn planting corn for local conditions, potato, sunflower, melon, millet drought-resistant crops and other characteristics.%覆膜保墒技术是发展旱作节水农业的重要科技支撑。现代意义上的覆膜保墒旱作节水农业技术在覆膜时间上包括秋覆膜和早春覆膜,在覆膜方式上包括半膜覆盖和全膜覆盖,在覆盖膜延期利用上包括留膜留茬越冬和一膜两年用。与传统地膜覆盖种植方式相比,现代覆膜保墒旱作节水农业技术基本实现了“五改”:一是改作物播期覆膜为秋季或早春覆膜,二是改半膜覆盖为全膜覆盖,三是改一膜一年用为一膜两年用,四是改垄面平播为双垄沟播,五是改几乎全部种植玉米为因地制宜种植玉米、马铃薯、向日葵、西甜瓜、谷子等各种特色抗旱作物。

  8. 77 FR 67329 - Information Collection: Agricultural Foreign Investment Disclosure Act

    Science.gov (United States)

    2012-11-09

    ...; ] DEPARTMENT OF AGRICULTURE Farm Service Agency Information Collection: Agricultural Foreign Investment... ADDRESSES. FOR FURTHER INFORMATION CONTACT: Lesa A. Johnson, Agricultural Foreign Investment Disclosure Act... technological collection techniques or other forms of information technology. All comments received in...

  9. SUSTAINABLE DEVELOPMENT INDEX IN AGRICULTURAL SECTOR: A CASE STUDY OF TECHNOLOGY OF COTTON ORGANIC COLOR IN BOM SUCESSO -PB

    Directory of Open Access Journals (Sweden)

    Gesinaldo Ataíde Cândido

    2008-08-01

    Full Text Available This study it has the objective to evaluate the global index of sustentability (IGS of the technology of production of the cotton colored in the state of the Paraíba, in its dimensions social, ambient, economic and institucional. To reach the considered objective a research of study of case was used based on the model considered for González and Carvajal (2002 that it measures the IGS of the producing unit in agroecological system. The results disclose that although to present a considered index of sustentability satisfactory, are necessary that mechanism of participation of the social actors in the decisions of the company is developed, as well as, to develop a research on the repercussion that this technology brings for the involved population, also identifying the social demand of the deriving products of the technology of the cotton in the population.

  10. Heroes of Agricultural Innovation

    NARCIS (Netherlands)

    Weele, van der C.; Keulartz, F.W.J.

    2009-01-01

    New technology has a prominent place in the theory and practice of innovation, but the association between high tech and innovation is not inevitable. In this paper, we discuss six metaphorical heroes of agricultural innovation, starting with the dominant hero of frontier science and technology. At

  11. Heroes of Agricultural Innovation

    NARCIS (Netherlands)

    Weele, van der C.; Keulartz, F.W.J.

    2009-01-01

    New technology has a prominent place in the theory and practice of innovation, but the association between high tech and innovation is not inevitable. In this paper, we discuss six metaphorical heroes of agricultural innovation, starting with the dominant hero of frontier science and technology. At

  12. Development of new technology using nuclear reactor for the research of agricultural environment and expanding of its use

    Energy Technology Data Exchange (ETDEWEB)

    Yuita, Koichi; Yamazaki, Shinichi; Miyagawa, Saburo; Ota, Takeshi; Nakai, Makoto; Sakurai, Yasuhiro; Makino, Tomoyuki; Takahashi, Yoshiaki [National Inst. of Agro-Environmental Sciences, Tsukuba, Ibaraki (Japan)

    1999-02-01

    Direct labeling of heavy metals in humus soil by thermal neutron irradiation was studied. The water elution rate of each element was measured under the various neutron irradiation conditions. The water elution rate of elements were changed by the neutron irradiation time. However, the state of element in soil was not changed by short irradiation time (less than 10 min), so that, the elution rate was the same value as that without irradiation. Six elements (Sc{sup 46}, Cr{sup 51}, Fe{sup 59}, Co{sup 60}, Zn{sup 55} and Eu{sup 152}) were specified. The direct labeling of elements in agricultural materials (sludge compost) made clear that the elution rate of Fe, Co, Cr and Sc decreased with decreasing the dosage of sludge compost in soil. (S.Y.)

  13. Agricultural land management options after the Chernobyl and Fukushima accidents: The articulation of science, technology, and society.

    Science.gov (United States)

    Vandenhove, Hildegarde; Turcanu, Catrinel

    2016-10-01

    The options adopted for recovery of agricultural land after the Chernobyl and Fukushima accidents are compared by examining their technical and socio-economic aspects. The analysis highlights commonalities such as the implementation of tillage and other types of countermeasures and differences in approach, such as preferences for topsoil removal in Fukushima and the application of K fertilizers in Chernobyl. This analysis shows that the recovery approach needs to be context-specific to best suit the physical, social, and political environment. The complex nature of the decision problem calls for a formal process for engaging stakeholders and the development of adequate decision support tools. Integr Environ Assess Manag 2016;12:662-666. © 2016 SETAC.

  14. The rise of Brazilian agriculture

    DEFF Research Database (Denmark)

    Jensen, Hans Grinsted; Vink, Nick; Sandrey, Ron

    2014-01-01

    The purpose of this article is to explore some of the possible lessons for South African agriculture from the Brazilian experience. To this end, the article discusses the performance of Brazilian agriculture in terms of land and labour use, production, and exports. This is followed by aspects...... of Brazilian agricultural policies, namely farmer support, the research and technology transfer system and land issues. The implications for South African agriculture can be summarized as the recognition that history, geography, the development path and agricultural policies all matter. The article...... then identifies five important lessons for agricultural development in South Africa....

  15. 低成本材料技术在美国新型航母上的应用研究%Applied Research of Low Cost Materials and Technologies in American aircraft carrier

    Institute of Scientific and Technical Information of China (English)

    邓贤辉; 郭爱红; 廖志谦

    2012-01-01

    During the period of 2010-2011, NMC has participated in many research projects on low cost materials and technologies applied in American new aircraft carrier, including R&D of advanced material and manufacturing technology, advanced jointing technology, new surface and coating technology,and so on. The research progress of these projects are summarized in this article. The economic and social benefits of improving properties and reducing cost on the aircraft carrier building are expected, which may inspire us in the R&D of advanced material and manufacturing technology for shipbuilding.%本文概述了美国海军金属加工中心(NMC)在2010-2011年间参与开展的新型航空母舰用先进材料、先进制造技术、先进连接技术、新型表面涂装与处理技术等方面开展的低成本材料技术研发工作所取得的进展.预测了研究成果转让给海军应用时,给航空母舰建造提高性能、降低成本所带来的巨大经济效益和社会效益.这将对我国开展舰船用先进材料及制造技术方面的研究与开发工作起重要启示作用.

  16. 四川省农业科技成果转化资金实施效果分析%Analysis on Effect of the Agricultural Science and Technology Achievements Transformation Funds Project in Sichuan Province

    Institute of Scientific and Technical Information of China (English)

    马文广; 邹弈星; 严建华; 郭红

    2012-01-01

    The central government sets up the agricultural science and technology achievements transformation funds from 2001. The funds can promote the transformation and application of agricultural science and technology achievements to in-crease the agricultural production efficiency, strengthen agriculture science and technology content and competitiveness. This paper analyses the effecl of the agricultural science and technology achievements transformation funds during the " e-leventh five-year plan", and reveals the achievement from technology factors flow, industrial competitiveness and ability of research and capital drive, it also puts forward the corresponding countermeasures.%2001年以来,中央设立了农业科技成果转化资金以促进农业科技成果的转化和应用,提高农业生产效率,增强农业科技含量和竞争力.对四川省“十一五”期间农业科技成果转化资金的实施状况进行了分析,重点从科技要素流动、产业竞争力、科研能力和资金带动等方面揭示了取得的成效,据此提出了相应的对策建议.

  17. Propulsion controlled aircraft computer

    Science.gov (United States)

    Cogan, Bruce R. (Inventor)

    2010-01-01

    A low-cost, easily retrofit Propulsion Controlled Aircraft (PCA) system for use on a wide range of commercial and military aircraft consists of an propulsion controlled aircraft computer that reads in aircraft data including aircraft state, pilot commands and other related data, calculates aircraft throttle position for a given maneuver commanded by the pilot, and then displays both current and calculated throttle position on a cockpit display to show the pilot where to move throttles to achieve the commanded maneuver, or is automatically sent digitally to command the engines directly.

  18. 民用飞机阵风载荷及减缓技术的研究%esearch on Gust Load and its Load Alleviation Technology of Civil Aircrafts

    Institute of Scientific and Technical Information of China (English)

    赵继伟; 胡赞远

    2012-01-01

    Due to the characteristic of large ratio wing of civil aircrafts, gust load often composes of the severe conditions of civil aircrafts. And it must be emphasized by all countries' airworthiness regulations. Moreover, owing to the elasticity of the aircraft structure, gust disturbance induces the elastic vibrations, reduces the structure stress, produces the fatigue damage, and even promote flutter. Thus it is of very importance and significance to investigate and research in gust load and gust load alleviation technologies in flight load design. This paper gives a brief introduction of gust load theories and the relevant technologies and also puts forward a type of gust load alleviation of method direct lift control to carry out gust load alleviation of the wing.%由于民用飞机机翼具有大展弦比的特点,因此阵风载荷经常成为民用飞机飞行载荷的严重情况,是各国适航标准重点考察的飞行情况。而且,阵风干扰还会因飞机机体的自身弹性引起结构弹性振动,使飞机结构刚度降低,造成机体疲劳损伤,甚至引起颤振。因此,在民用飞机载荷设计过程中对阵风载荷及其减缓技术进行研究具有非常重要的意义。介绍了民用飞机阵风载荷的原理及相关技术,以及阵风载荷减缓技术中用直接升力控制方法来实现机翼的阵风载荷减缓。

  19. RETURNED MIGRATION AND AGRICULTURAL TECHNOLOGY OF THE MORELIA-QUERÉNDARO VALLEY, MICHOACÁN, MÉXICO

    Directory of Open Access Journals (Sweden)

    Arturo Franco Gaona

    2014-01-01

    Full Text Available The importance of return migration lies in being the final step in the migration process and also in the social, economic, cultural, technological, and physical conditions of the migrants returning to their communities. It is considered that migration allowed the acquisition of new knowledge to be applied in the region. The aims of this research consisted on identifying the working activities done by migrants before and during the migration cycle; the acquisition of technological knowledge in immigrants; and the productive and working activities they are actually doing at the Morelia- Queréndaro Valley. The information was collected by the sampling method called snowball, supported by semi-structured interviews applied to 51 key informants. It was found that before their departure they work as farmers. As American immigrants, they performed activities in the countryside and in the city that required a low technological level. When they return they bring three important elements they have acquired during the process: a knowledge; b remittances; and c technology.

  20. 农业用水权有偿转让经济技术措施研究%Economic Technology of Agricultural Water Right Compensable Transfer

    Institute of Scientific and Technical Information of China (English)

    荣四海

    2009-01-01

    从经济学角度出发,探讨了农业用水权转让的经济管理集成技术,研究内容包括农业初始水权的界定与水权分配、国家政策环境对农业用水权有偿转让的影响、农业用水权有偿转让主要内容、程序步骤等,最后结合河南省群库灌区调查,计算分析了灌区用水量转让、农业用水转移的供水价格与供水年限以及农业用水量转让后对当地工农业经济和农民收入的影响等.研究成果对我国农业用水权有偿转让以及工农业经济发展具有一定的参考价值.%Starting from economic viewpoints, the systematic economic management technology of agricul-tural water right transfer were studied, which include water right initial allocaltion, national policy influ-ence, water right trading, water right trading system, etc. Finally, based on investigation for Qunku Irri-gaiton District, calculation and analysis were carried out for water transfer, water price, water supply pe-riod, industrial and agricultural economic influence. The present fingdings should be an important refer-ence value for agricultural water right compensable transfer and related economic development.

  1. Initiatives and Experiences of EU in Supporting Agriculture Technology Transfer%欧盟促进农业科技成果转化的做法和经验

    Institute of Scientific and Technical Information of China (English)

    曹建如

    2014-01-01

    Agricultural technology extension and technology transfer is an important step in improving innovation of agriculture sector. EU has been vigorously supporting agricultural technology transfer to improve the transformation of R&D results into productivity. On the one hand, through the implementation of Common Agricultural Policy, farmers are encouraged to apply new technologies. On the other hand, through the EU Research Framework Program, initiatives such as Agricultural Technology Platform Programs, Joint Programming Initiatives, and the Agricultural Innovation Partnership are developed to promote agriculture extension and technology transfer. This paper analyzes the initiatives of EU in promoting agricultural extension and technology transfer, and gives some insights: participation of local farmers and agricultural enterprises play an important role in promoting technology transfer. It is necessary for us to follow market rules.%促进农业技术推广和成果转化是提高农业创新能力的重要环节。长期以来,欧盟一直在大力扶持农业研发成果的推广、技术转移和转化。一方面,通过实施共同农业政策的价格补贴等措施保护农民利益,鼓励农民采用新技术和新成果,促进成果转化;另一方面,通过欧盟框架研发计划,实施农业技术平台计划、联合项目计划等,建立包括农民和农业企业在内的利益攸关方(Stakeholder)共同体,推进农业技术转移和成果转化。通过对欧盟农业技术平台等促进成果转化的做法进行研究和分析,得到启示:农业科技成果转化,要注重农民的参与,注重发挥农业企业的作用,要强调顺应市场规律。

  2. Assessing the biophysical and socio-economic potential of Sustainable Land Management and Water Harvesting Technologies for rainfed agriculture across semi-arid Africa.

    Science.gov (United States)

    Irvine, Brian; Fleskens, Luuk; Kirkby, Mike

    2016-04-01

    Stakeholders in recent EU projects identified soil erosion as the most frequent driver of land degradation in semi-arid environments. In a number of sites, historic land management and rainfall variability are recognised as contributing to the serious environmental impact. In order to consider the potential of sustainable land management and water harvesting techniques stakeholders and study sites from the projects selected and trialled both local technologies and promising technologies reported from other sites . The combined PESERA and DESMICE modelling approach considered the regional effects of the technologies in combating desertification both in environmental and socio-economical terms. Initial analysis was based on long term average climate data with the model run to equilibrium. Current analysis, primarily based on the WAHARA study sites considers rainfall variability more explicitly in time series mode. The PESERA-DESMICE approach considers the difference between a baseline scenario and a (water harvesting) technology scenario, typically, in terms of productivity, financial viability and scope for reducing erosion risk. A series of 50 year rainfall realisations are generated from observed data to capture a full range of the climatic variability. Each realisation provides a unique time-series of rainfall and through modelling can provide a simulated time-series of crop yield and erosion risk for both baseline conditions and technology scenarios. Subsequent realisations and model simulations add to an envelope of the potential crop yield and cost-benefit relations. The development of such envelopes helps express the agricultural and erosional risk associated with climate variability and the potential for conservation measures to absorb the risk, highlighting the probability of achieving a given crop yield or erosion limit. Information that can directly inform or influence the local adoption of conservation measures under the climatic variability in semi

  3. Agriculture: Newsroom

    Science.gov (United States)

    Agriculture Newsroom. News releases, reports, and other documents from around EPA that are of interest or direct importance to the environmental management or compliance efforts of the agricultural community.

  4. Moving towards a more electric aircraft

    OpenAIRE

    Rosero García, Javier Alveiro; Ortega Redondo, Juan Antonio; Aldabas Rubira, Emiliano; Romeral Martínez, José Luis

    2007-01-01

    Harry Rowe Mimno Award for the March 2007 AESS Magazine Paper: “Moving Towards A More Electric Aircraft” The latest advances in electric and electronic aircraft technologies from the point of view of an "all-electric" aircraft are presented herein. Specifically, we describe the concept of a "more electric aircraft" (MEA), which involves removing the need for on-engine hydraulic power generation and bleed air off-takes, and the increasing use of power electronics in the starter/generation s...

  5. Multidisciplinary Techniques and Novel Aircraft Control Systems

    Science.gov (United States)

    Padula, Sharon L.; Rogers, James L.; Raney, David L.

    2000-01-01

    The Aircraft Morphing Program at NASA Langley Research Center explores opportunities to improve airframe designs with smart technologies. Two elements of this basic research program are multidisciplinary design optimization (MDO) and advanced flow control. This paper describes examples where MDO techniques such as sensitivity analysis, automatic differentiation, and genetic algorithms contribute to the design of novel control systems. In the test case, the design and use of distributed shape-change devices to provide low-rate maneuvering capability for a tailless aircraft is considered. The ability of MDO to add value to control system development is illustrated using results from several years of research funded by the Aircraft Morphing Program.

  6. Research related to variable sweep aircraft development

    Science.gov (United States)

    Polhamus, E. C.; Toll, T. A.

    1981-01-01

    Development in high speed, variable sweep aircraft research is reviewed. The 1946 Langley wind tunnel studies related to variable oblique and variable sweep wings and results from the X-5 and the XF1OF variable sweep aircraft are discussed. A joint program with the British, evaluation of the British "Swallow", development of the outboard pivot wing/aft tail configuration concept by Langley, and the applied research program that followed and which provided the technology for the current, variable sweep military aircraft is outlined. The relative state of variable sweep as a design option is also covered.

  7. On Regional Development Strategy of International Cooperation for Tropical Agricultural Science and Technology%热带农业科技国际合作区域发展战略研究

    Institute of Scientific and Technical Information of China (English)

    张雪; 蒋昌顺

    2011-01-01

    China's tropical agriculture developed by introducing foreign advanced technology and through the innovation, which is an important development experience for China's tropical agriculture, and reflects its basic law of development as well. This paper analyzes the development trend of the international tropi- cal agriculture, the development of tropical agriculture in China, and then proposes a regional development strategy of international cooperation for tropical agricultural science and technology among China and oth- er countries in Asia, Africa, Latin America and Tropical South Pacific Islands, for better serving our tropi- cal agricultural science and technology innovation and national diplomatic stTategy.%通过分析国际热带农业发展趋势,结合我国热带农业发展情况,探讨中国在亚非拉及南太岛国地区热带农业科技国际合作的区域发展战略.更好地为我国热带农业科技创新和国家外交服务。

  8. Citation Analysis of Dissertations in Molecular Biology and Biotechnology: A Case Study of G. B. Pant University of Agriculture and Technology, India

    Directory of Open Access Journals (Sweden)

    Hema Haldua

    2012-06-01

    Full Text Available Citation analysis and ranking of journals are key aspects of knowledge management and collection development in academic and research libraries. This paper aims to assist the library collection development in order to fulfill the needs of scientists and research scholars. The study covered the period 1998–2010 and used the reference lists of dissertations submitted by the doctoral students of the molecular biology and biotechnology sciences at the G. B. Pant University of Agriculture and Technology, Pantnagar, India. The findings of the study showed that citation analysis is a valid, reliable and practical method to provide reasonably accurate information on the use of molecular biology and biotechnology literature by doctoral students. Publishing research in high-quality journals is an integral part of academic life. Therefore, researchers often refer to journal rankings when making decisions to submit and publish their research findings.

  9. NASA-UVA Light Aerospace Alloy and Structure Technology Program Supplement: Aluminum-Based Materials for High Speed Aircraft. Final report, 1 December 1991-31 March 1996

    Energy Technology Data Exchange (ETDEWEB)

    Starke, E.A. Jr.

    1996-05-01

    This is the final report of the study `Aluminum-Based Materials for high Speed Aircraft` which had the objectives (1) to identify the most promising aluminum-based materials with respect to major structural use on the HSCT and to further develop those materials and (2) to assess the materials through detailed trade and evaluation studies with respect to their structural efficiency on the HSCT. The research team consisted of ALCOA, Allied-Signal, Boeing, McDonnell Douglas, Reynolds Metals and the University of Virginia. Four classes of aluminum alloys were investigated: (1) I/M 2XXX containing Li and I/M 2XXX with Li, (2) I/M 6XXX, (3) two P/M 2XXX alloys and (4) two different aluminum-based metal matrix composites (MMC). The I/M alloys were targeted for a Mach 2.0 aircraft and the P/M and MMC alloys were targeted for a Mach 2.4 aircraft. Design studies were conducted using several different concepts including skin/stiffener (baseline), honeycomb sandwich, integrally stiffened and hybrid adaptations (conventionally stiffened thin-sandwich skins). Alloy development included fundamental studies of coarsening behavior, the effect of stress on nucleation and growth of precipitates, and fracture toughness as a function of temperature were an integral part of this program. The details of all phases of the research are described in this final report.

  10. AIRCRAFT MAINTENANCE HANGAR

    National Research Council Canada - National Science Library

    GEAMBASU Gabriel George

    2017-01-01

    .... The first part of research describes the aircraft maintenance process that has to be done after an updated maintenance manual according with aircraft type, followed by a short introduction about maintenance hangar...

  11. Qualidade da aplicação aérea líquida com uma aeronave agrícola experimental na cultura da soja (Glycine Max L. Liquid aerial pesticide application quality with an experimental agricultural aircraft in soybean crop (Glycine Max L.

    Directory of Open Access Journals (Sweden)

    Elton F. dos Reis

    2010-10-01

    L.. For the application, an experimental agricultural aircraft was used, applying a spray volume of 20 L ha-1. A bright blue food coloring added to the syrup spray was used for the determination of the volumes stored in the leaves of the upper third, middle and bottom of the soybean plants. These leaves were washed, and the volume determined by spectrophotometry. To obtain the drops spectrum were used artificial targets set by water sensitive paper, distributed in the middle and upper third of the plants. Data were submitted to analysis of variance with a single factor, considering the different positions in the plant, and control cards were made from the lower and upper control limits. The aerial application of syrup spray in the soybean crop had lower values of the volumetric median diameter, relative amplitude and coverage on the middle third in relation of the upper third of the soybean crop. There was less of the syrup spray deposition in the lower third. The coverage indicators of the syrup spray showed that aerial application with the evaluated agricultural experimental aircraft is not under statistical process control, in other words, outside of the quality standard.

  12. Titanium alloys Russian aircraft and aerospace applications

    CERN Document Server

    Moiseyev, Valentin N

    2005-01-01

    This text offers previously elusive information on state-of-the-art Russian metallurgic technology of titanium alloys. It details their physical, mechanical, and technological properties, as well as treatments and applications in various branches of modern industry, particularly aircraft and aerospace construction. Titanium Alloys: Russian Aircraft and Aerospace Applications addresses all facets of titanium alloys in aerospace and aviation technology, including specific applications, fundamentals, composition, and properties of commercial alloys. It is useful for all students and researchers interested in the investigation and applications of titanium.

  13. USSR Report, Agriculture

    Science.gov (United States)

    2007-11-02

    rations for ruminant animals. Its preparation from corn of milky-waxy ripeness, assuming the observance of all of the technological requirements, makes...combines of the agricultural chemicals association or on the kolkhozes and sovkhozes for the preservation of liquid preservatives or special means of...Tatar combine of the agricultural chemicals association, liquid preserv- atives are kept in wide-diameter polytheylene pipes.. A storage unit with

  14. Contribution Rate Measurement and Analysis for Agricultural Scientific and Technological Progress in Shanxi%山西农业科技进步贡献率的测算与分析

    Institute of Scientific and Technical Information of China (English)

    张淑辉; 陈建成; 张立中; 张新伟

    2012-01-01

    By elaborating the calculation theory and model of contribution rate for agricultural scientific and technological progress,the author made an analysis of agricultural scientific and technological progress contribution rate from 1991 to 2010 in Shanxi by Cobb-Douglas production function based on SPSS 18.0. The result indicated that the contribution rate of agricultural scientific and technological progress was 28.69% from 1991 to 2010 in Shanxi,the contribution rate of the factor of agricultural scientific and technological progress showed the trend of escalation for agricultural economic growth.%在阐述农业科技进步贡献率测算理论和模型的基础上,运用Cobb-Douglas(C-D)生产函数,利用SPSS 18.0软件对1991-2010年山西省农业科技进步贡献率进行了测算.结果表明,山西省1991-2010年农业科技进步贡献率为28.69%.农业科技进步因素对农业经济增长的贡献率呈上升趋势.

  15. Evaluation and Analysis on the Municipal Innovation Capability of Agricultural Technology in Anhui Province%安徽省各市农业技术创新能力评析

    Institute of Scientific and Technical Information of China (English)

    张德元; 张杰兮

    2013-01-01

    文章以农业技术创新理论为基础,通过选取安徽省各市的14个原始指标构建出农业技术创新能力评价体系,采用主成分分析法和聚类分析法对安徽省各市的农业技术创新能力进行评析和分类,并提出了提升安徽省各市农业技术创新能力的相关对策。并在市级农业技术创新能力的定量分析领域提供了相关理论依据和研究方法,为全面建设安徽省农业技术创新体系夯实了基础。%Based on the theory of agricultural technology innovation and by selecting 14 basic indicators of cities in Anhui prov-ince, this paper designs the evaluation system of innovation capability of agricultural technology. Using principal component analysis and cluster analysis, this paper evaluates and classifies the innovation capability of agricultural technology in the cit-ies of Anhui province,and puts forward the related policy suggestions for improving the innovation level of agricultural technol-ogy. At last,the paper provides the relevant theories and research methods in the field of the quantitative analysis on the munic-ipal innovation capability of agricultural technology and strengthens the construction of agricultural technology innovation sys-tem in Anhui province.

  16. Unmanned aircraft systems

    Science.gov (United States)

    Unmanned platforms have become increasingly more common in recent years for acquiring remotely sensed data. These aircraft are referred to as Unmanned Airborne Vehicles (UAV), Remotely Piloted Aircraft (RPA), Remotely Piloted Vehicles (RPV), or Unmanned Aircraft Systems (UAS), the official term used...

  17. Technology Optimized Test on the Cutter of Agricultural Machine by Flame Spraying and Remelting NiWC Alloy

    Institute of Scientific and Technical Information of China (English)

    HAO Jian-jun; LI Hui-ping; MA Yue-jin; SHEN Yu-zeng

    2004-01-01

    In order to solve the problemof the machine for chopping and returning stubble into soil high-priced and short-lifetime, wear-resistance coating was made on the substrate of 45# steel by flame spraying and remelting NiWC alloy. By means of orthogonal test and multiple factors variance analysis, how the test factors influence the wear-resistance was studied.The technology parameters of flame spraying and remelting NiWC alloy were optimized as follows: coating matching,65% Ni60+ 35% WC; preheat temperature ,450 ℃; acetylene flow, 1000 L/h; spraying distance ,40 mm.

  18. Subsonic Ultra Green Aircraft Research

    Science.gov (United States)

    Bradley, Marty K.; Droney, Christopher K.

    2011-01-01

    This Final Report summarizes the work accomplished by the Boeing Subsonic Ultra Green Aircraft Research (SUGAR) team in Phase 1, which includes the time period of October 2008 through March 2010. The team consisted of Boeing Research and Technology, Boeing Commercial Airplanes, General Electric, and Georgia Tech. The team completed the development of a comprehensive future scenario for world-wide commercial aviation, selected baseline and advanced configurations for detailed study, generated technology suites for each configuration, conducted detailed performance analysis, calculated noise and emissions, assessed technology risks, and developed technology roadmaps. Five concepts were evaluated in detail: 2008 baseline, N+3 reference, N+3 high span strut braced wing, N+3 gas turbine battery electric concept, and N+3 hybrid wing body. A wide portfolio of technologies was identified to address the NASA N+3 goals. Significant improvements in air traffic management, aerodynamics, materials and structures, aircraft systems, propulsion, and acoustics are needed. Recommendations for Phase 2 concept and technology projects have been identified.

  19. Aircraft Lightning Electromagnetic Environment Measurement

    Science.gov (United States)

    Ely, Jay J.; Nguyen, Truong X.; Szatkowski, George N.

    2011-01-01

    This paper outlines a NASA project plan for demonstrating a prototype lightning strike measurement system that is suitable for installation onto research aircraft that already operate in thunderstorms. This work builds upon past data from the NASA F106, FAA CV-580, and Transall C-180 flight projects, SAE ARP5412, and the European ILDAS Program. The primary focus is to capture airframe current waveforms during attachment, but may also consider pre and post-attachment current, electric field, and radiated field phenomena. New sensor technologies are being developed for this system, including a fiber-optic Faraday polarization sensor that measures lightning current waveforms from DC to over several Megahertz, and has dynamic range covering hundreds-of-volts to tens-of-thousands-of-volts. A study of the electromagnetic emission spectrum of lightning (including radio wave, microwave, optical, X-Rays and Gamma-Rays), and a compilation of aircraft transfer-function data (including composite aircraft) are included, to aid in the development of other new lightning environment sensors, their placement on-board research aircraft, and triggering of the onboard instrumentation system. The instrumentation system will leverage recent advances in high-speed, high dynamic range, deep memory data acquisition equipment, and fiber-optic interconnect.

  20. STUDY ON THE FRAMEWORK SYSTEM OF DIGITAL AGRICULTURE

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    China is a great agricultural country with large population, limited soil resources and traditional farming mode, so the central government has been attaching great importance to the development of agriculture and put forward a new agricultural technology revolution - the transformation from traditional agriculture to modern agriculture and from extensive farming to intensive farming. Digital agriculture is the core of agricultural informatization. The enforcement of digital agriculture will greatly promote agricultural technology revolution, two agricultural transformations and its rapid development, and enhance China′ s competitive power after the entrance of WTO. To carry out digital agriculture, the frame system of digital agriculture is required to be studied in the first place. In accordance with the theory and technology of digital earth and in combination with the agricultural reality of China, this article outlines the frame system of digital agriculture and its main content and technology support.

  1. 机器人技术在农业中的应用方向和发展趋势%The Trend of Application and Development of Robot Technology in Agriculture

    Institute of Scientific and Technical Information of China (English)

    毕昆; 赵馨; 侯瑞锋; 王成

    2011-01-01

    Agriculture robotics can better serve the agricultural production by studying agricultural robotics technology further, and then increase agricultural mechanization. The author read a lot of related data and had a further study on agricultural robotics. It is found that the application of agricultural robot is more and more wide. It greatly reduces the labor intensity and increases labor efficiency and makes up the shortage of labor scarcity. However, there are some shortcomings on the application of agricultural robots. The improvement and innovation of agricultural robots will bring greater economic benefits and become an important way of modern agricultural development. The author described the latest concept and characteristics of agricultural robot in recent years, analyzed the importance and necessity of agricultural robot, introduced the existing agricultural robot feature, application field. On the basis, some suggestions were proposed on the trend of application and development of robot technology in agriculture.%农业机器人技术的深入研究,可以使农业机器人技术更好地服务于农业生产,进而提高农业机械化程度.笔者通过对国内外大量相关资料的查阅,以及对机器人技术在农业生产中应用的深入研究,发现机器人技术在农业中的应用愈来愈广泛.农业机器人大大降低了劳动强度,提高了劳动效率,解决了劳动力不足的难题,但是在农业应用中仍存在一些不足.农业机器人技术的不断完善和创新,将会给农业生产带来更大的经济效益,成为现代化农业发展的重要途径.笔者简述了机器人技术在农业领域中最新应用及特点,分析了农业机器人的重要性及必要性,介绍了现有农业机器人的功能特点、应用领域.在此基础上,针对农业机器人应用现状存在的不足,笔者对今后机器人技术在农业中的应用方向和发展趋势提出了建议.

  2. 国内外农业技术转移模式比较与借鉴%Comparison and Learning from the Internal and External Modes for Agricultural Technology Transfer

    Institute of Scientific and Technical Information of China (English)

    刘艳艳; 郭春雨; 蔡辉益

    2013-01-01

    Strengthening the construction and improvement of the mode for technology transfer is still an important task for China to accelerate the transfer of agricultural science and technology. By comparing the different agricultural technology transfer modes between China and USA,Japan,EU, this paper summarized the advantages of agricultural technology transfer modes in developed countries or organizations, and provided suggestions for optimizing and improving Chinese agricultural technology transfer mode, so as to accelerate its transfer process.%加强技术转移模式的建设和完善仍然是我国加速农业技术转移的重要任务。通过比较我国与美国、日本、欧盟的农业技术转移模式,总结了发达国家或组织在农业技术转移模式上的优势,同时,提出了对我国农业技术转移模式优化及改进建议,以期对我国农业技术转移起到一定的促进作用。

  3. DESIGN OF FARMLAND GIS FOR PRECISION AGRICULTURE

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    Precision Agriculture, also known as Precision Farming, or Prescription Farming, is a modern agriculture technology system, which brings " precision" into agriculture system. All concepts of Precision Agriculture are established on the collection and management of variable cropland information. As the tool of collecting, managing and analyzing spatial data, GIS is the key technology of integrated Precision Agriculture system. This article puts forward the concept of Farmland GIS and designs Farmland GIS into five modules, and specifies the functions of the each module, which builds the foundation for practical development of the software. The study and development of Farmland GIS will propel the spreading of Precision Agriculture technology in China.

  4. Study on Static Test Technology for High-Aspect Ratio Wing of Full Scale Aircraft%全尺寸飞机大展弦比机翼静力试验技术研究

    Institute of Scientific and Technical Information of China (English)

    刘兴科; 刘冰; 张建锋

    2014-01-01

    In the bearing capability static test of wing structure,because of the high-aspect ratio, the large deformation will arouse load direction changed.Taking the full scale aircraft structure as research obj ect,a test loading technology is proposed,which can realize the extractive wing loading.The static test of a certain type aircraft structure solves the problems of large deforma-tion loading,which has great realistic significance and application value.%在大展弦比飞机的机翼承载能力试验中,试验加载方向会因其大变形发生变化。本文以全尺寸结构机翼为研究对象,提出一种试验加载技术,最大程度实现机翼载荷的准确施加。通过此静强度试验,很好地解决了机翼试验大变形加载问题,具有较大的现实意义和应用价值。

  5. Suggestions for Development of High-end Fine Quality Agriculture by Relying on Scientific and Technological Innovation%依靠科技创新促精品高端农业发展的建议

    Institute of Scientific and Technical Information of China (English)

    温淑萍

    2014-01-01

    介绍了精品高端农业概念的发展,分析了发展精品高端农业的必要性及现存共性问题,提出依靠科技创新,促精品高端农业发展的建议。并提出各类农产品的加工标准及其信息化、自动化生产线成套设备设施的研发是精品高端农业科技创新的一个重要方向;提出精品高端农业发展的一个主流模式是合理布局农产品区域加工中心企业,以此关联产业协会及农产品生产主体,形成“初级农产品由生产主体按相关标准生产-加工产品统一质量规格标准经生产线加工包装-商品区域品牌市场化联营联销-产品质量主要由产业协会全程追溯监管”的品牌化生产模式。%A discussion is made on the concept of the high-end fine quality agriculture. The necessity and existing common problems in the development of the high-end fine quality agriculture are elaborated. Some suggestions for promoting the development of the high-end fine quality agriculture by relying on scientific and technological innovation are put forward. It is also put forward that the R&D of various agriculture products process standards and their informationized and automatic process equipment and facilities are the main direction of scientific and technological innovation in the aspect of the high-end fine quality agriculture. A mainstream pattern for development of the high-end fine quality agriculture is to arrange the regional core agricultural products process enterprises in this way that the agriculture industry association and the agricultural products producing bodies are combined together and consist a brand products process pattern: primary agricultural products produced by the farmer or agricultural company according to the standards, made products processed and packaged by processing lines according to the unified quality standards, the commodity labeled local brands sale in market by chain stores, the quality of the products is

  6. Engineering technology classification of processing and storage for agricultural product producing area%农产品产地加工与储藏工程技术分类

    Institute of Scientific and Technical Information of China (English)

    王丹阳; 沈瑾; 孙洁; 刘清; 刘丽; 赵靓; 程勤阳

    2013-01-01

    Processing and storage of agricultural producing area is an important link in the chain of China agricultural production chain and technical short-board,which is in urgent need to be developed into a supporting technology of the pre-treating industry of agricultural producing area. Technical classification is a frame work to reveal the structural framework and organization relationship of the engineering technical system of processing and storage of agricultural producing area, to orderly guide the technology constitute innovation, development and reserve, and to promote technology integration and promotion, the subject development and industrial upgrade, which is in urgent need of breakthrough in the theoretical methods and classification pragmatic to better guide the engineering technology of processing and storage for the agricultural production area to have a comprehensive and sustainable development. in the base of a grasp on the law of motion and the different technologies constitute special contradiction.The research is based on the broader category of contemporary agricultural produce processing and storage engineering technology, following the principle of reality, hierarchy, stability and openness. Through the analysis of the technical content and technical classification of the processing and storage engineering technology for agricultural producing area, four level line classification method have been determined, which could reflect the professional sequence, technical functions, technical means and technology form of the processing and storage engineering technology for agricultural producing area. According to the complete function of agricultural production area as the basic foundation of classification, the results of horizontal and vertical technology classification have been obtained respectively. The complete function of industrial chain of agricultural production area is to obtain the optimal and comprehensive using for resources, while to

  7. 加强农业技术推广体系建设的对策%An Investigation Into The Countermeasures in Respects to Strengthening The Construction of Promotion System for Agricultural Technology

    Institute of Scientific and Technical Information of China (English)

    何艳

    2015-01-01

    the development of the rural areas has been gradually drawing attention in recent years,the construction of rural areas has also achieved a lot.Currently,in order to better promote the development of agriculture and the construction in rural areas and gradual recognition in respect to strengthening the construction of agricultural technology popularization system.The promotion of a-gricultural technology is effective to transform the mode of agricultural development and promote the development of agricultural e-conomy and the construction in rural areas.however,the promotion of agricultural technology has met with some difficulties,current-ly,it is necessary to solve the obstacles facing agro-technical popularization to better promote the development of agriculture.%近年来农村的发展逐渐受到重视,农村的建设也取得了比较好的效果。当前为了更好地促进农业的发展和农村的建设,加强农业技术推广体系的建设逐渐得到认可。农业技术推广对于转变农业发展方式,促进农业经济的发展和农村的建设有着积极的作用。但是农业技术的推广中也遇到了一些困难,当前需要及时解决农业技术推广的障碍,更好地促进农业的发展。

  8. 基于物联网技术的智能农业种植系统设计%Design of agriculture intelligent planting system based on IOT technology

    Institute of Scientific and Technical Information of China (English)

    宋艳

    2013-01-01

    In order to solve the problems existing in the modernization of agriculture in China,the connotations of IOT tech-nology and intelligent agriculture are expounded in this paper because of the rapid development and application of IOT technolo-gy in various fields. The key technologies of IOT applied in intelligent agriculture are analyzed. The application of IOT technolo-gy in agricultural management system is proposed. The agriculture intelligent planting system based on IOT technology was con-structed. The framework of its management platform was designed. It is expected that the application and development of IOT technology in intelligent agriculture can greatly promote the automation and intelligent levels of modern agriculture,reduce the share of resources,and improve the production efficiency and quality of agricultural products.%为了解决我国现代化农业中存在的问题,根据当下物联网技术在各个领域的迅速发展并逐步应用,在此对物联网技术和智能农业的内涵分别进行了阐述,分析了物联网应用在智能农业的关键技术,提出物联网技术具体应用在农业种植系统中,并对基于物联网技术的智能农业种植系统进行构建,设计了管理平台的框架。期待智能农业中物联网技术的应用和发展,能够极大地推进现代农业的自动化、智能化水平,降低资源占有率,提高农产品的生产效率及产品的质量。

  9. USDA's national institute of food and agriculture (NIFA): engaging knowledge and technology, incentives and policies to promote appropriate decision making in the management of water and watersheds

    Science.gov (United States)

    James Dobrowolski

    2016-01-01

    Agriculture, across the value chain, is the greatest consumptive user of water resources in the United States and around the world. Perhaps the greatest challenge facing agricultural producers will be increased agricultural production to meet rising demand in the face of limited water resources.

  10. MODERNIZATION OF AGRICULTURE VS SUSTAINABLE AGRICULTURE

    Directory of Open Access Journals (Sweden)

    Dariusz KUSZ

    2014-04-01

    Full Text Available The paper shows the correlation between the need to modernise agriculture and sustainable development. Modernisation of agriculture aiming only at increasing the efficiency of production, if implemented in accordance with the principles of sustainable development, enabled reduction in the negative external effects. Modernisation of agriculture is supposed to ensure productivity growth without imposing any threats to the natural environment and the well-being of animals, reduced impoverishment in rural areas as well as to ensure food security, growth in the profitability of farms, improvement to the efficiency of use of natural resources. Therefore, in the near future, the agriculture – environment relation will be subject to change taking into account, on the one hand, concern about the natural environment, and, on the other, pressure on increasing the efficiency of production. The above challenges will be addressed by the need to implement efficient and, at the same time, environmentally-friendly production technologies and relevant legal instruments which oblige agricultural producers to protect the natural environment.

  11. Empirical Analysis of Agricultural Production Efficiency in Shaanxi Province

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    This article analyses the agricultural production efficiency of all cities and areas in Shaanxi Province in the period 2006-2009 using data envelopment analysis method,and compares the agricultural production efficiency between all cities and areas.The results show that the agricultural production efficiency and scale efficiency of agriculture of Shaanxi Province are high on the whole,but the efficiency of agricultural technology is very low,agricultural development still relies on factor inputs,and the driving role of technological progress is not conspicuous.Finally the following countermeasures are put forward to promote agricultural productivity in Shaanxi Province:improve the construction of agricultural infrastructure,and increase agricultural input;accelerate the project of extending agricultural technology into households,and promote the conversion and use rate of agricultural scientific and technological achievements;establish and improve industrial system of agriculture,and speed up the building of various agricultural cooperative economic organizations.

  12. AASPT Carbon/Carbon Aircraft Brake Disk Granted MPA

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    @@ Xi'an Chaoma Technology Co. Ltd. was issued Parts Manufacturer Approval (PMA) for Carbon/Carbon aircraft brake disk for Airbus 320 series by Civil Aviation Administration of China (CAAC). The company is held by Academy of Aerospace Solid Propulsion Technology (AASPT), a subsidiary of China Aerospace Science and Technology Corporation (CASC). It is the first approval given to a Chinese company to design and produce brakes for main civilian aircraft.

  13. Assessment of Stakeholders Participation in The Implementation of Information and Communication Technology Software Projects: A Case of Jomo Kenyatta University of Agriculture and Technology

    Directory of Open Access Journals (Sweden)

    Gladys Kibera

    2013-10-01

    Full Text Available Acknowledging people who will directly or indirectly benefit from a project is significant for its success. Projects whether small or large must place more weight on participation of stakeholders to build awareness, set realistic expectations, raise support, minimize resistance and ensure successful implementation and user adoption. Information and Communication Technology (ICT projects are no different. Getting people to embrace the change and a completely new way of operations of software systems like Customer Relationship Management (CRM, has been an uphill task because of factors like failure to involve the stakeholders and improper change management. The study categorized stakeholders into three; managers, administrators and technical staff. It adopted quantitative and qualitative research approach. We found out that managers are the key decision makers who facilitate the procurement of systems; administrators are the end users while the technical team provides support and maintenance of the systems. We propose that right from problem identification, to system specification all the way to installation of software (implementation stakeholders must be brought on board.

  14. Strengthen the Construction of Innovating Team and Raise the Level of Agricultural Science and Technology%加强创新团队建设 提高农业科技水平

    Institute of Scientific and Technical Information of China (English)

    吕珂; 徐世艳; 杜鹃; 侯倩倩; 赵泽民

    2012-01-01

    农业科技创新团队是整合资源的有效组织形式,是科技创新和科研攻关的重要载体,是培养优秀科技人才的平台,加强科技创新团队建设至关重要。本文阐述了农业科技创新团队建设的基础、关键和保障,分析了农业科技创新团队建设存在的问题,并针对问题提出了加强农业科技创新团队建设的对策,如增强团队成员的团队意识、加强团队领军人才的培养、完善专门的团队绩效考评机制等,以期为进一步促进农业科技创新团队建设提供借鉴。%Innovating team of agricultural science and technology is an effective organization form of resources integration, an important carrier of technical innovation and technological breakthroughs, and the platform of training excellent science and technology talents, it is very important to strengthen the construction of science and technology innovating team. The foundation, crux and guarantee of agricultural science and technology innovating team construction were declared, the existed problems of agricultural science and technology innovating team construction were analyzed, and the countermeasures were put forward to the existed problems as follows in order to provide references for the further promotion of agricultural science and technology innovating team construction: enhance the awareness of the team members, strengthen the team leader training, perfect the mechanism of team performance assessment and so on.

  15. FY 1978 aeronautics and space technology program summary

    Science.gov (United States)

    1977-01-01

    Highlights of the aeronautics program include research on aircraft energy efficiency, supersonic cruise aircraft, vertical takeoff and landing aircraft, short haul/short takeoff and landing aircraft, and general aviation aircraft. The space technology program includes work on space structures, propulsion systems, power systems, materials, and electronics.

  16. 基于信息技术的农业旅游服务能力提升研究%Research and Design of the Service Enhancement for Agriculture Tourism Based on Information Technology

    Institute of Scientific and Technical Information of China (English)

    杨娟; 郑秀国; 王运圣; 袁涛; 陈建林; 赵京音

    2011-01-01

    信息技术在旅游业的应用主要是互联网技术,并表现出有效的促进作用,农业旅游作为新兴的旅游形式,有着巨大的发展潜力.在分析我国农业旅游的特点以及信息技术应用现状的基础上,提出了基于信息技术的农业旅游服务能力提升设计方案.从农业旅游景点的布局设计和线路规划、景点的推广宣传手段、管理经营方式方面,详细分析了运用信息技术的应用效果、具体技术手段,甚至详细的设计方案,旨在为我国农业旅游发展从信息技术角度提供指导意见.图2,表2,参13.%The application of information technology on tourism was mainly the internet technonoly and had showing evidently promotion effect Agriculture tourism is a new type in the tourism and hag huge development potentiality. Hie feature of the agriculture tourismes existing in china and the application status of information technology in these tourism attractions were analyzed in the paper. Then some design programes of the service enhancement for agriculture tourism basen on information technology were proposed. The programs included the layout design and route planning, popularization technique, management and operation manner for agriculture tourism attractions. Finally, the application effect, detailed technology manner, even the detailed process were introduced in the paper. The purpose is to provide guidance for the development of the agriculture tourism from the information technology way.

  17. Embracing the Role of Science in Agriculture.

    Science.gov (United States)

    Sparace, Salvatore A.; Layfield, K. Dale

    2003-01-01

    The approach to agricultural production has come to rely on the application of modern science and technology for improvements and innovation. There has been a shift from traditional production careers to those involving science-driven agricultural development. (JOW)

  18. An Outlook on Agricultural Modernization Path with Chinese Characteristics from Scale Agricultural Operation

    Institute of Scientific and Technical Information of China (English)

    Wanjiang; WANG

    2015-01-01

    First of all,this paper discusses the scale agricultural operation of China from the aspects of practical exploration and rational thinking. Later,it puts forward the concept of further promoting scale agricultural operation according to the present conditions of China,which includes encouraging large household pattern and scale breeding,developing various forms of socialized agricultural services,promoting agriculture industrialization,accelerating regional distribution of advantageous agricultural products and promoting the progress in agricultural science and technology comprehensively.

  19. USSR Report, Agriculture.

    Science.gov (United States)

    2007-11-02

    evaluation of the phyto- sanitary condition of the fields were not coordinated with the calendar- phenological schedules, some agronomists were unable...During the first year following its introduction, an intensified variation of this agricultural technology enabled the Tambov grain growers to produce

  20. Research on Influencing Factors of the Science and Technology Innovation Ability of Agricultural Scientists and Technologists%农业科技人员科技创新能力影响因素的研究

    Institute of Scientific and Technical Information of China (English)

    姚江林; 青平

    2012-01-01

    采取问卷调查获取研究数据的方法,对农业科技人员科技创新能力的影响因素进行了实证分析,结果显示农业科技人员科技创新能力与其教育背景、学术交往、成就动机密切相关;另外,科技人员所在单位的支持力度对于自变量与因变量之间的关系存在部分正向调节作用.因此,提出了强化农业科技人员科技创新能力的管理对策.%Based on the data obtained by questionnaire, the influencing factors of the innovation ability of agricultural science and technology of agricultural scientists and technologists was empirically analyzed. It was found that the educational background, academic communication and achievement motivation of agricultural scientists and technologists was closely related with their innovation ability. Furthermore, support from the working place had some positive influence on the relationship between independent and dependent variables. Accordingly, a management strategy for strengthening the innovation ability of a-gricultural science and technology of agricultural scientists and technologists was put forward.

  1. PRINCIPLE "EARLY MATCHING" AERODYNAMIC DESIGN AIRCRAFT WITH LANDING GEAR HOVERCRAFT

    Directory of Open Access Journals (Sweden)

    V. P. Morozov

    2015-01-01

    Full Text Available The principle of "early matching" aircraft aerohydrodynamic layouts with air cushion landing gear is suggested. Application of this principle is considered as an example of adaptation to the ball screw base circuit of light transport aircraft. The principle, other than weight, aerodynamic, technological and operational requirements includes additional project activities related to the installation of ball screws.

  2. Substitution Elasticity of China's Agriculture:The Role of Human Capital and Technological Changes%中国农业要素的替代弹性:人力资本的作用及农业技术变迁

    Institute of Scientific and Technical Information of China (English)

    李志俊

    2014-01-01

    By using time series data , this paper explores the substitutional relations among different agricultural factors and discusses the resulting progress bias of agricultural technology .The results show that on the timeline , there is a long-term substitutional trend among all elements of material capital input to agriculture; Human capital increases land replacement by capital, and it has higher substitution elasticity than the use of chemical fertilizer , so its role should not be ignored.With the introduction of human capital , China's agricultural technology has changed its preference:from land intensiveness to power in-tensiveness of agricultural machinery and material capital intensiveness of fertilizers ;technological progress of agricultural ma-chinery is faster than technological progress of fertilizers .The skewness of technological progress is an economic-technological phenomenon associated with the growth stage of a large population without full development of agriculture .%本文利用时间序列数据探讨农业要素间的替代关系以及由此引发的关于农业技术进步偏向性的讨论。在时间轴上,农业投入物质资本的各要素之间存在长期替代趋势,人力资本提高了资本对土地的替代能力,且它对化肥施用的替代弹性较高,因而其作用不容忽视。引入人力资本前后,中国农业技术的偏向性发生了改变,从土地密集型逐步转向农业机械动力和化肥的物质资本密集型,而且农业机械动力的技术进步要快于化肥施用的技术进步。非技能偏态技术进步是与人口规模庞大且未获得充分发展的农业成长阶段相联系的一种经济技术现象。

  3. FACTORS INFLUENCING ADHERENCE TO ARVS AMONG PATIENTS ATTENDING COMPREHENSIVE CARE CLINIC WITHIN JOMO KENYATTA UNIVERSITY OF AGRICULTURE AND TECHNOLOGY, KIAMBU COUNTY, KENYA.

    Science.gov (United States)

    Mwangi, A N; Ng'ang'a, Z; Wanzala, P; Karanja, S M

    2014-04-01

    The efficacy of anti-retroviral Therapy (ART) depends on adherence to the prescribed regimen. However, lack of adherence leads to treatment failure and drug resistance among other negative outcomes. To determine factors influencing adherence to ARVS among patients attending the Comprehensive Care Clinic (CCC) within Jomo Kenyatta University of Agriculture and Technology (JKUAT). A descriptive cross sectional study. Comprehensive Care Clinic within JKUAT. Three hundred HIV positive patients, undergoing ART treatment and follow up at the JKUAT clinic for a minimum duration of one month before the study, were recruited. Of the 300 patients enrolled for the study (70% females and 30% males), 81% were adhering to ARV treatment. The factors that were significantly associated with adherence included; Support (encouragement and reminder to take drugs) (P = 0.025); the number of meals respondents took in a day (P = 0.001); pill burden (P = 0.002) and forgetfulness (P = 0.001). However, there was no significant relationship between adherence and age, marital status, education, employment status or time taken to travel to the clinic. This study concluded that, the observed level of sub-optimal adherence to ART (19%) is of public health concern. These patients are vulnerable to treatment failure and development of resistant viral strains. Consequently the modifiable factors (Support, Number of meals taken, pill burden, and forgetfulness, should be addressed to change the current tread.

  4. Developing countries and the aircraft industry: match or mismatch?

    NARCIS (Netherlands)

    Steenhuis, Harm-Jan; Bruijn, de Erik J.

    2001-01-01

    For many industrially developing countries, technology transfer is seen as a road towards technological and economic development. Indonesian experiences with the aircraft industry suggest that the transfer of technology in this sector is extremely difficult, and even if technology is actually transf

  5. Overview of Ecological Agriculture with High Efficiency

    Institute of Scientific and Technical Information of China (English)

    HUANG Guo-qin; ZHAO Qi-guo; GONG Shao-lin; SHI Qing-hua

    2012-01-01

    From the presentation, connotation, characteristics, principles, pattern, and technologies of ecological agriculture with high efficiency, we conduct comprehensive and systematic analysis and discussion of the theoretical and practical progress of ecological agriculture with high efficiency. (i) Ecological agriculture with high efficiency was first advanced in China in 1991. (ii) Ecological agriculture with high efficiency highlights "high efficiency", "ecology", and "combination". (iii) Ecological agriculture with high efficiency is characterized by diverse organisms, good environment, good structure, powerful function, good quality, high benefit, low emission, sustainability. (iv) The yield increase and efficiency increase principle of ecological agriculture with high efficiency lies in full land use, three-dimensional light use, sufficient use of season, multi-layer water consumption, efficient fertilizer consumption, symbiosis and mutual supplement, ecological disaster reduction, recycling. (v) The typical pattern of ecological agriculture with high efficiency includes three-dimensional use pattern, biological symbiosis pattern, multi-industry combination pattern, industrial extension pattern, technology-driven pattern, environmental renovation pattern, resource recycling pattern, leisure and sight-seeing pattern. (vi) The key technologies of ecological agriculture with high efficiency include resource-saving technology, water and fertilizer regulation technology, biological technology for increasing soil fertility, disaster prevention and mitigation technology, comprehensive utilization technology, water conservation technology, structural adjustment technology, energy development technology, watershed control technology, and modern high-tech technology.

  6. Understanding the links between agriculture and health:

    OpenAIRE

    Hawkes, Corinna; Ruel, Marie T.

    2006-01-01

    CONTENTS: 1.Overview / Corinna Hawkes and Marie T. Ruel; 2. Agriculture, Food, and Health: Perspectives on a Long Relationship / Tim Lang; 3. Agricultural Technology and Health / Michael Lipton, Saurabh Sinha, and Rachel Blackman; 4. Agriculture and Nutrition Linkages: Old Lessons and New Paradigms / Corinna Hawkes and Marie T. Ruel; 5. Agriculture, Food Safety, and Foodborne Diseases / Ewen C. D. Todd and Clare Narrod; 6. Agriculture, Malaria, and Water-Associated Diseases / Clifford M. Mute...

  7. On Institutionalizing and Reconstructing the Objective of the Legalization of Agricultural Science and Technology%论农业科技法制目标的重构及其制度化

    Institute of Scientific and Technical Information of China (English)

    李亮国

    2014-01-01

    In China,the objective of the legalization of agricultural science and technology is to increase cereal production greatly. It brought some adverse effects. Some agricultural sciences and technologies that are negative to environment were used and the methods of traditional agricultural production were lost. The quality and safety of agricultural products are very low and the environment and resources of agriculture were damaged. Based on the idea of sustainable development, the objective of the legalization of agricultural science and technology should be shifted to the model of"ecology and production coordinated".%我国农业科技立法及政策性文件表明当下我国农业科技法制的目标为“产量确保型”。其对产量的过分强调招致环境负面型农业科技的普遍适用及传统生态型农业生产方式的灭失,以至于农产品尤其是食用农产品质量安全隐患严重,农业环境资源破坏严重等问题。本文基于可持续发展理念下农业的多功能性,提出我国农业科技法制的目标应转向“生态产量协调型”,并在技术控制主义理念指导下使该目标获得制度化。

  8. Construction on Agricultural Science and Technology Service System in the Trend of Industrial Integration Development%产业融合趋势下北京农业科技服务体系建设

    Institute of Scientific and Technical Information of China (English)

    陈俊红; 尹光红

    2014-01-01

    研究产业融合趋势下农业科技服务体系建设路径,对落实服务业引领现代农业发展战略,提高农业现代化水平和综合生产能力具有重要意义。调查研究结果显示,北京农业科技服务体系网络比较健全,但在体系管理、服务主体协同创新、基础设施建设等方面有不足,根据现代农业融合发展需要,应从加强组织领导、统筹协作、机制创新入手,建设公益性服务与经营性服务有机结合的新型农业科技服务体系。%Researching on the construction of agricultural science and technology service system under the trend of industri-al integration,implementing the service industry to lead the development of modern agriculture strategy,and improving the level of agricultural modernization and the comprehensive production capacity have the important meaning. Research shows, Beijing agricultural science and technology service system in the network is perfect,but in the management system,the main service collaborative innovation,infrastructure construction and other aspects are still insufficient. Facing the integra-tion development trend of the modern agriculture,efforts should be made to strengthen the organization and leadership,o-verall coordination,mechanism innovation system,new agricultural science and technology service system combined with services of public welfare service and market construction.

  9. Promoting Open Innovation to Enhance the Innovation Capacity of Agricultural Science and Technology%推进开放式创新 提升农业科技创新能力

    Institute of Scientific and Technical Information of China (English)

    还红华

    2015-01-01

    在深入推进经济全球化、社会信息化的进程中,开放式创新具有重要意义.文章介绍了开放式创新的特征、内涵和实现途径,并基于开放式创新,分析了制约农业科技创新能力提升的因素,针对性地提出了强化开放创新意识、激发创新热情,健全开放创新机制、催生发展动力和优化创新资源整合、提升创新效率等推进农业科技开放式创新的对策,期望通过切实转变农业科技创新模式,提升农业科技创新能力,开创农业科技创新新局面,推动现代农业建设迈上新台阶.%In the process of deeply propelling economic globalization and society informatization, open innovation is of great importance. Features, connotation and realization approaches of open innovation were introduced in the paper. Factors restricting improvement of agricultural science and technology innovation capacity were analyzed based on open innovation. Countermeasures for promoting open innovation of agricultural science and technology were put forward accordingly, such as intensifying consciousness of open innovation, motivating creativity emotion, perfecting mechanism of open innovation, hasten generating development power, optimizing innovation resource integration and improving innovation efficiency, etc. These were for shift of innovation pattern, enhance the innovation capacity of agricultural science and technology, create a new situation of agricultural science and technology innovation and push modern agricultural construction to a new level.

  10. Evaluation of the Advanced Subsonic Technology Program Noise Reduction Benefits

    Science.gov (United States)

    Golub, Robert A.; Rawls, John W., Jr.; Russell, James W.

    2005-01-01

    This report presents a detailed evaluation of the aircraft noise reduction technology concepts developed during the course of the NASA/FAA Advanced Subsonic Technology (AST) Noise Reduction Program. In 1992, NASA and the FAA initiated a cosponsored, multi-year program with the U.S. aircraft industry focused on achieving significant advances in aircraft noise reduction. The program achieved success through a systematic development and validation of noise reduction technology. Using the NASA Aircraft Noise Prediction Program, the noise reduction benefit of the technologies that reached a NASA technology readiness level of 5 or 6 were applied to each of four classes of aircraft which included a large four engine aircraft, a large twin engine aircraft, a small twin engine aircraft and a business jet. Total aircraft noise reductions resulting from the implementation of the appropriate technologies for each class of aircraft are presented and compared to the AST program goals.

  11. School Of Agricul_ture, '

    African Journals Online (AJOL)

    new agricultural technologies as the local farmer is endowed with a considerable ... cropping systems, biodiversity conservation and health delivery system as ... marshy soils in the dry season production of vegetable such as okro, garden.

  12. Agriculture Sectors

    Science.gov (United States)

    The Agriculture sectors comprise establishments primarily engaged in growing crops, raising animals, and harvesting fish and other animals. Find information on compliance, enforcement and guidance on EPA laws and regulations on the NAICS 111 & 112 sectors.

  13. Agricultural Geophysics

    Science.gov (United States)

    The four geophysical methods predominantly used for agricultural purposes are resistivity, electromagnetic induction, ground penetrating radar (GPR), and time domain reflectometry (TDR). Resistivity and electromagnetic induction methods are typically employed to map lateral variations of apparent so...

  14. Design Guidelines, Experimental Investigation and Numerical Analysis of a New Twin Engine Commuter Aircraft

    OpenAIRE

    Corcione, Salvatore

    2015-01-01

    At the end of the year 2011, statistical data reports that the average age of general aviation registered aircraft is 46 years for single-engine piston powered aircraft and 15 years for single-engine turboprop aircraft. The average age for twin-engine 8-12 seats aircraft is 42 years for piston powered models and about 29 years for twin-engine turboprop commuter aircraft. These data show the need of a new aircraft model, also characterized by the application of new technologies like c...

  15. Aircraft Anomaly Detection Using Performance Models Trained on Fleet Data

    Science.gov (United States)

    Gorinevsky, Dimitry; Matthews, Bryan L.; Martin, Rodney

    2012-01-01

    This paper describes an application of data mining technology called Distributed Fleet Monitoring (DFM) to Flight Operational Quality Assurance (FOQA) data collected from a fleet of commercial aircraft. DFM transforms the data into aircraft performance models, flight-to-flight trends, and individual flight anomalies by fitting a multi-level regression model to the data. The model represents aircraft flight performance and takes into account fixed effects: flight-to-flight and vehicle-to-vehicle variability. The regression parameters include aerodynamic coefficients and other aircraft performance parameters that are usually identified by aircraft manufacturers in flight tests. Using DFM, the multi-terabyte FOQA data set with half-million flights was processed in a few hours. The anomalies found include wrong values of competed variables, (e.g., aircraft weight), sensor failures and baises, failures, biases, and trends in flight actuators. These anomalies were missed by the existing airline monitoring of FOQA data exceedances.

  16. Stochastic Methods for Aircraft Design

    Science.gov (United States)

    Pelz, Richard B.; Ogot, Madara

    1998-01-01

    The global stochastic optimization method, simulated annealing (SA), was adapted and applied to various problems in aircraft design. The research was aimed at overcoming the problem of finding an optimal design in a space with multiple minima and roughness ubiquitous to numerically generated nonlinear objective functions. SA was modified to reduce the number of objective function evaluations for an optimal design, historically the main criticism of stochastic methods. SA was applied to many CFD/MDO problems including: low sonic-boom bodies, minimum drag on supersonic fore-bodies, minimum drag on supersonic aeroelastic fore-bodies, minimum drag on HSCT aeroelastic wings, FLOPS preliminary design code, another preliminary aircraft design study with vortex lattice aerodynamics, HSR complete aircraft aerodynamics. In every case, SA provided a simple, robust and reliable optimization method which found optimal designs in order 100 objective function evaluations. Perhaps most importantly, from this academic/industrial project, technology has been successfully transferred; this method is the method of choice for optimization problems at Northrop Grumman.

  17. Agriculture: About EPA's National Agriculture Center

    Science.gov (United States)

    EPA's National Agriculture Center (Ag Center), with the support of the United States Department of Agriculture, serves growers, livestock producers, other agribusinesses, and agricultural information/education providers.

  18. Sensor integritY Management and Prognostics Technology with On-line fault Mitigation (SYMPTOM) for Improved Flight Safety of Commercial Aircraft Project

    Data.gov (United States)

    National Aeronautics and Space Administration — SSCI proposes to develop and test the Sensor integritY Management and Prognostics Technology with On-line fault Mitigation (SYMPTOM) system. The SYMPTOM assures...

  19. Cable Tensiometer for Aircraft

    Science.gov (United States)

    Nunnelee, Mark (Inventor)

    2008-01-01

    The invention is a cable tensiometer that can be used on aircraft for real-time, in-flight cable tension measurements. The invention can be used on any aircraft cables with high precision. The invention is extremely light-weight, hangs on the cable being tested and uses a dual bending beam design with a high mill-volt output to determine tension.

  20. Innovations in Aircraft Design

    Science.gov (United States)

    1997-01-01

    The Boeing 777 carries with it basic and applied research, technology, and aerodynamic knowledge honed at several NASA field centers. Several Langley Research Center innovations instrumental to the development of the aircraft include knowledge of how to reduce engine and other noise for passengers and terminal residents, increased use of lightweight aerospace composite structures for increased fuel efficiency and range, and wind tunnel tests confirming the structural integrity of 777 wing-airframe integration. Test results from Marshall Space Flight Center aimed at improving the performance of the Space Shuttle engines led to improvements in the airplane's new, more efficient jet engines. Finally, fostered by Ames Research Center, the Boeing 777 blankets that protect areas of the plane from high temperatures and fire have a lineage to Advanced Flexible Reusable Surface Insulation used on certain areas of the Space Shuttle. According to Boeing Company estimates, the 777 has captured three-quarters of new orders for airplanes in its class since the program was launched.