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1.
ABSTRACT Rural America has traditionally lagged behind urban areas in the delivery of information goods and services. Two major barriers to enhanced information access: distance and a limited number of information resources, can be negated by telecommunications networks such as the Internet. Using three common Internet telecommunications systems, the Cooperative Extension Service is examined as a developing resource of networked information for rural America. 相似文献
2.
PurposeThe Bagnoli’s brownfield site (southern Italy) is an environmental priority for the Italian Government and is currently considered as a case study for the definition and application of innovative approaches to ecosystem recovery after a prolonged pollution history and eventual steel plant decommissioning. Materials and methodsHere, we analyse high-quality datasets that constrain the distribution patterns and sources of contaminants in the coastal zone facing the site where the steel plant operated for almost one century. Innovative statistical approaches provide new insights into the temporal and spatial distribution of anthropogenic impacts, documented over the last 30 years, following lines of evidence emerging from investigations on grain size, TOC, heavy metals, PAHs, PCBs and high-resolution morpho-bathymetric information. Results and discussionThe results derived from statistical analysis, referred also to the seafloor morphological variability, highlighted the presence of recent disposal of highly contaminated sediments and their potential pathways of dispersion to wider and deeper water zones. ConclusionsThe adopted multidisciplinary approach yields fundamental information towards an effective and proper ecosystem recovery of highly contaminated marine coastal areas and provides at the same time, a sound base for the refitting of decommissioned industrial plants. 相似文献
3.
ABSTRACT Texas Agricultural Extension Service (TAEX) has been experimenting with electronic information servers as an adjunct to traditional information distribution methods. Information servers may be easily established on inexpensive (< $1,500 US) computers running all free software. A brief analysis of present usage is presented, and cost savings documented. Some guidelines for on-line information providers are presented. Internet information servers allow access to a broader audience at lower cost than traditional distribution. 相似文献
4.
ABSTRACT This article provides a framework for encouraging further dialogue concerning the role of information professionals in supporting the technology commercialization efforts of entrepreneurs, researchers, and small businesses. After a brief introduction to the technology commercialization process, the roles of university engagement in commercialization activities are discussed. The paper concludes with questions for consideration focused on the role of the information professional. 相似文献
5.
ABSTRACTTo better understand the complexity of agricultural research, two Purdue University Libraries’ faculty members conducted a series of interviews with subjects from across the College of Agriculture. Interview questions addressed research methodologies and outputs, research data management, primary information resources, and other aspects of the research cycle and the researchers’ professional lives. Interviews were recorded, transcribed, and analyzed using nVivo software. The results are summarized and presented here. 相似文献
6.
ABSTRACT Information technology is perhaps the most pervasive technology in U.S. agriculture. Despite such pervasiveness, the federal government continues to play a crucial role in providing agricultural market information that may be obtained from several sources, including private vendors. Results from a policy survey suggest that seventy-five percent of farmers want the government to continue to play that role. Further results from a logistic regression examine the determinants of that role by examining the influence of several socio-economic variables such as education, membership in agricultural organizations, land tenure and income. 相似文献
7.
ABSTRACT Russian librarianship is going through an exciting period of change from the world of tight party control and service to the official propaganda to the world of free access to information. However, the new initiatives are not necessarily always supported financially. Issues facing Russian librarianship at present are analyzed by an ALA/USIA Library Fellow. 相似文献
8.
ABSTRACT The partnership between CAB International (CABI) and China which began in 1980 reached a major milestone in 1992 with agreement to collaborate on a national information project financed by a grant from the Asian Development Bank. China became a Member Country of CABI in 1995. This opened the way to further partnership between CABI and China in working toward capacity building of Chinese agricultural information systems and improvement of information access, management and dissemination in China. China's joining CABI was also a major boost to full internationalisation of CABI and led to a considerable expansion of CABI's interests and activities throughout Asia. 相似文献
9.
ABSTRACT Many successful Extension programs depend on the knowledge and expertise of volunteer Master Gardeners. It is important that Master Gardeners take advantage of research-based information and tips and tricks to finding quality information on the Web. This article outlines a successful cooperative project in which segments of a traditional classroom instruction session for Master Gardeners were modified into tutorials. The tutorials were then offered via the Web and used as part of the Master Gardener training. 相似文献
10.
ABSTRACT In 1993, the Ohio Agricultural Research and Development Center became an agricultural information provider on the Cleveland Free-Net, the first community-based computer system. The benefits of participation have been increased visibility for the Center among the citizens of northeast Ohio and an opportunity to help meet the information needs of the Free-Net users. 相似文献
11.
[目的]为实现水土保持规划设计的高精度、高效率及现时性要求,探求低空遥感技术在水土保持规划设计中的应用基础和前景。[方法]选取陕西省榆林市横山区鲍家寺景区进行低空遥感试验,通过建立数字高程模型(DEM)和数字正射模型(DOM),从3个方面比较分析低空遥感数据的优势,并进一步探索了低空遥感成果在水土保持规划前期基础信息获取阶段的基本应用。[结果]低空遥感不但具有灵活性好,时效性好,数据精度高等基础优点,而且借助其他地理信息系统软件可方便、快捷提取地形现状信息和水土保持治理现状信息等水土保持规划基础资料,大大提高工作效率,能满足水土保持规划设计的要求。[结论]低空遥感数据应用于水土保持规划设计具备广阔前景。 相似文献
12.
ABSTRACT Developing countries, Kenya included, continue to put considerable efforts in the creation of scientific agricultural information through the utilization of scientific human resources and an extensive agricultural research system. Little attention has been paid to the management and dissemination of the information so created, especially within the research system, as contrasted with the fanner level. This paper argues that the management and dissemination of information at the level of the research scientists is crucial to the effectiveness of the entire research system, and concludes that Kenya is deficient in this respect. 相似文献
13.
Purpose: Sorghum [ Sorghum bicolor (L.) Moench] has been cultivated for centuries as a staple food crop for millions of people in sub-Saharan Africa and Asia. In Ethiopia a total of 4.34 million tons of sorghum is being produced per annum, predominantly in the arid and semi-arid areas. However, the yield and quality of sorghum is affected by a wide array of production constraints, notably severe and recurrent drought stress. The aim of this study were to determine the impact of drought on sorghum production and productivity over time and space, and to identify farmers’ trait preferences, production constraints and coping strategies when dealing with drought in north eastern Ethiopia. Materials and methods: Participatory rural appraisal (PRA) was employed in three administrative zones of north eastern Ethiopia. One Woreda from each Zone and two Kebeles from each Woreda were selected on the basis of sorghum area coverage, production, consumption and prior information on the intensity, duration and spatial coverage of drought. In each kebele, 30 respondents were selected for interview and 12 key informants were selected for group discussions and transect walk personal observations. Data collected from 180 respondents was subjected to statistical analysis and the information gathered from 72 key informants through focus group discussions and transect walk observations were used in discussing the results. Results and discussion: The present study found that productivity of sorghum was challenged by recurrent droughts, Striga infestation, insects, birds, diseases, a lack of varieties with farmers-preferred traits and high yield potential, limited policy support, a lack of improved seed system, poor sorghum production practices and application of crop input and poor soil fertility, in a decreasing order of importance. Among the listed sorghum production constraints, severe drought in the post-flowering stage was identified by most interviewed farmers as the leading constraint across the three study zones. Focus group discussions and transect walk observations held in each Kebele revealed that farmers’ had lost numerous valuable local landrace varieties due to extreme drought conditions over the years. A significant number of interviewed farmers preferred to grow high grain and biomass yielder medium-maturing sorghum varieties which can be sown at the normal planting time but which would escape post-flowering drought. Conclusion: Overall, sorghum breeding programme should be directed at developing farmers’ ideal sorghum varieties with high grain and biomass yield, adequate level of drought and Striga tolerance. In addition, development of farmer preferred medium-maturing sorghum varieties suitable for April planting should be strengthen to boost its productivity and to increase varietal adoption rate in the area. 相似文献
14.
PurposeSediment accumulation has been and continues to be a significant threat to the integrity of the playa wetland ecosystem. The purpose of this study was to determine the vertical depth to the clay soil layer (Bt horizon) and thus to calculate the thickness of sediments accumulated in playa wetlands. Materials and methodsThis study used the electromagnetic induction (EMI) survey method, specifically EM38-MK2 equipment, to measure the vertical depth to the clay soil layer at the publicly managed wetlands in the Rainwater Basin, Nebraska, USA. Results and discussionThe results indicated that the depth to the clay soil layer ranges from 21 to 78 cm (n?=?279) with a mean sediment thickness of 39 cm. The annual sediment deposition rate since human settlement in the 1860s was calculated to be 0.26 cm year?1. The results provided science-based data to support future wetland restoration planning and the development of decision support tools that prioritize conservation delivery efforts. ConclusionsOur research confirmed that the EMI technique is effective and efficient at determining the depth to the Bt horizon for playa wetlands. Additionally, these results supported previous studies and continue to indicate that a large amount of sediment has accrued in these playa wetlands within the Rainwater Basin area since settlement. Wetland restoration ecologists can use this information to prioritize future wetland restoration work that intends to remove culturally accumulated sediments above the clay soil layer. These findings provided a contemporary summary of wetland soil profile information that is typically used to develop restoration plans. This research also filled the critical knowledge gap about the thickness of the upper soils and the depth to Bt in publicly managed wetlands. 相似文献
15.
ABSTRACTThis study assessed farmers' utilization of agricultural information on Ere Agbe radio broadcasts in the Oke-Ogun Area of Oyo State. Data were collected on appropriateness, utilization of agricultural information, and constraints to access, from 160 farmer-listeners using an interview schedule. The appropriateness of information was low (51.9%); 47.5% utilized information highly; irregular power supply ( M = 1.3125) was the main constraint to information access. The perceived appropriateness ( r = .89, p ≤ .05) and constraints faced ( r = ?0.29, p ≤ .05) were significantly related to utilization of agricultural information. Broadcasts should address farmers' needs, while cheap, alternative power sources should be explored. 相似文献
16.
ABSTRACT For more than six years, a multidisciplinary team at the University of Arizona, along with a variety of outside partners, have been developing a series of Web sites and Web modules on topics related to the management of western rangelands. This article describes collaborations that have led to the development of the Arizona Rangelands Web site. The site is organized around distinct modules that provide access to data and other information previously only available through agency or other technical specialists. Also described is a companion Web site, which provides a template for storage and retrieval of archived information central to the management of public land grazing allotments. 相似文献
17.
ABSTRACT This paper discusses the organizational mechanisms affecting policy-making in the creation of agricultural scientific information in Kenya. Specifically, an attempt is made to determine how well the general policy framework fits the particular case of agriculture. It is concluded that the state suffers from organizational inefficiency in both the policy-formulation mechanisms and the policy-implementing institutions in the agricultural research system. 相似文献
18.
PurposeSediment dynamics in most large river basins are influenced by a variety of different natural and anthropogenic pressures, and disentangling these cumulative effects remains a challenge. This study determined the contemporary and historical sources of fine-grained (<?63-μm) sediment in a large, regulated river basin and linked changes in sources to activities in the basin. The river has seen declines in chinook salmon, sockeye salmon, and the endangered Nechako white sturgeon populations, and sediment (both fine-grained and sands) transport and deposition have been identified as potential causes of these declines. Materials and methodsSamples of suspended sediment and potential source materials were collected from numerous sites distributed throughout the upper Nechako River Basin in British Columbia, Canada. A floodplain sediment core was also collected in order to reconstruct sediment sources over the last ~?70 years. Discriminating fingerprint properties were used within the MixSIAR model to apportion sources among sub-basins and land-use types. Results were compared to records of precipitation and Nechako River discharge trends, and to changes in landscape development. Results and discussionContributions from the erosion of channel banks dominated the suspended sediment load at most sites. Changes in sediment sources during the 2015 field season reflected snowmelt and patterns of water release from the Nechako Reservoir that affected the sediment-carrying capacity of tributaries and the Nechako River main stem. Spatial variations in 2015 also reflected the distribution of land use (e.g., forested or agricultural land) as well as topography (e.g., slope steepness). Over the last ~?70 years, variations in sediment sources and the characteristics of the sediment (e.g., organic matter content and particle size composition) were linked to the construction of the Kenney Dam (operational in 1954) and the impacts of deforestation by the forestry and agricultural industries. Superimposed on these have been wildfires and a major mountain pine beetle infestation leading to higher erosion rates in the affected areas. ConclusionsThe sediment source fingerprinting technique, in combination with historical information on the hydrometeorology and the land use and river management in the basin, has provided valuable information with which to understand sediment dynamics in the Nechako River Basin. Such an approach can help to disentangle how large river systems respond to a combination of natural and anthropogenic pressures. 相似文献
19.
ABSTRACT Information technologies are offering new ways for Extension personnel to reach a wider audience. Incorporating these technologies into an educational strategy requires an assessment of the propensity of Extension's clientele to use such technologies. Results from a survey of farmers suggest a preference for receiving information through direct communication. This method provides an opportunity for Extension to encourage farmers to use existing information technologies in order to realize greater efficiency gains. The results also suggest that the socio-economic factors examined were not related to the preference for any type of information technology. 相似文献
20.
ABSTRACTAs part of a larger, national survey, we performed an in-depth qualitative analysis using semistructured interviews and a standard set of questions. We wished to examine the research practices of faculty in agriculture, to understand what they need to be successful in their teaching and research. We plan to use this information to make improvements to research support services. The national survey results should help pinpoint opportunities for developing new research support services for agriculture. This study adds to library and information sciences by examining the specific needs of faculty members in agriculture and agricultural extension, groups that have been previously underrepresented in the library literature. 相似文献
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