20,419 research outputs found
Effects of Ionospheric Asymmetry on Electron Density Standard Inversion Algorithm Applicable to Radio Occultation (RO) Data Using Best-suited Ionospheric Model
The "Onion-peeling" algorithm is a very common technique used to invert Radio Occultation (RO) data in the ionosphere. Because of the implicit assumption of spherical symmetry for the electron density (Ne) distribution in the ionosphere, the standard Onion-peeling algorithm could give erroneous concentration values in the retrieved electron density vertical profile Ne(h). In particular, this happens when strong horizontal ionospheric electron density gradients are present, like for example in the Equatorial Ionization Anomaly (EIA) region during high solar activity periods. Using simulated RO Total Electron Content (TEC) data computed by means of the best-suited ionospheric model and ideal RO geometries, we evaluated the asymmetry level index for quasi-horizontal TEC observations. This asymmetry index is based on the Ne variations that a signal may experience along its ray-path (satellite to satellite link) during a RO event. The index is strictly dependent on RO geometry and azimuth of the occultation plane and is able to provide us indication of the errors (in particular those concerning the peak electron density NmF2 and the vertical TEC) expected in the retrieval of Ne(h) using standard Onion-peeling algorithm. On the basis of the outcomes of our work, and using best-suited ionospheric model, we will try to investigate the possibility to predict the ionospheric asymmetry expected for the particular RO geometry considered. We could also try to evaluate, in advance, its impact on the inverted electron density profile, providing an indication of the product qualit
MARKETING CHANNELS USED BY WHOLESALE AND RETAIL NURSERY COMPANIES
Analysis of data collected from a questionnaire survey of randomly selected Tennessee nursery businesses revealed that wholesalers and retailers differed significantly in their stated reasons for attending and participating in industry trade shows. When controlled for business size (gross sales), wholesalers and retailers also differed significantly in their perception of the usefulness of catalogs, newspapers, trade journals, trade shows, and radio to advertise nursery products and services.advertising channels, business operation size, Chi-square tests of independence, nursery retail business, nursery wholesale business, strategic marketing, stratified random sample, Industrial Organization,
CONSUMER BIOTECHNOLOGY FOOD AND NUTRITION INFORMATION SOURCES: THE TRUST FACTOR
Although much has been written on consumer attitudes toward genetically modified foods, not much is known about how or where consumers get the information for the decisions they make about genetically modified foods. This paper reports on the media used by consumers in acquiring information about biotech food and nutrition issues, and examines how much trust consumers put in selected information sources. The paper also discusses how socio-economic variables affect level of trust in selected sources. Qualitative and quantitative techniques were applied to data collected from focus groups and a mail questionnaire survey. Analyses showed that consumers used newspapers (73.7%), television (73.2%), and magazines (71.2%) occasionally or more frequently than other sources to collect information about food and biotechnology. Health professionals, extension professionals, and University scientists were most trusted for providing information about GM foods. Findings of the study could provide information on choice of effective channels for communicating information about modified food and biotechnology.Consumer/Household Economics,
Producer Biotech Food Knowledge Differences: Findings from a Three-State Survey
Over the years, public opinion in the United States on agricultural biotechnology has shifted from one of extreme consumer concern to one of indifference. This paper analyzes gender, ethnic, education, age, and household-income differences in producersÂ’' biotechnology knowledge. Mail questionnaires were used in collecting data. Responses to selected questions were analyzed using the Statistical Package for the Social Sciences. Chi-squares tests showed statistically significant differences in biotechnology knowledge among farmers who participated in the three-state survey.Research and Development/Tech Change/Emerging Technologies,
Are domestic banks' pass through higher than foreign banks? Empirical evidence from Pakistan
This study contributes to the literature by estimating Interest Rate Pass Through (IRPT) using Pakistani aggregate banks’ lending and deposit rate data. Lending and deposit rates are estimated to be sluggish in terms of their response to a change in monetary policy rate. There is also evidence of asymmetry in the pass through of four types of banks (i.e., privatized, nationalized, foreign and specialized). Overall, the domestic banks’ pass through is estimated to be higher than that of foreign bank. Although the IRPT is estimated to be incomplete, the degree of lending rate pass- through is not very low. This study provides evidence of an increase in the adjustment speed when the lending rate is below equilibrium after January 2005. However, there was no significant change in the pass through after January 2005 which coincided with the constant increase in the Treasury bill rate by the State Bank of Pakistan.Monetary policy, Treasury Bill rate, pass thropugh
Policies for replacing long-term indwelling urinary catheters in adults
We would also like to thank the foll owing Cochrane Incontinence editorial base staff members for their help and support with this re-view: Cathryn Glazener, Sheila Wallace, Mandy Fader, Peter Her-bison and Suzanne Macdonald. The review authors are grateful to Toby Lasseron for his advice. The review authors are thankful to Dr Beverly Priefer for responding to our query about Priefer 1982. Policies for replacing long‐term indwelling urinary catheters in adults, Protocol, Fergus PM Cooper, Cameron Edwin Alexander, Sanjay Sinha, Muhammad Imran Omar; https://doi.org/10.1002/14651858.CD011115; 14 May 2014Peer reviewedPublisher PD
The Livestock Economy of Pakistan: An Agricultural Sector Model Approach
The Pakistan Agricultural Sector Model (PASM) developed by Davies et al. (1991) was modified to enhance the livestock sub-sector. Nutrient-based rations replaced feedstuff-based rations and dry matter minimum and maximum constraints (stomach capacity) were added. Several initial simulations were undertaken to examine the structure of the modified model and its impact across the crop and livestock sub-sectors. These simulations included relaxing exogenous livestock numbers and selected crop hectarage constraints, and requiring that green forage be fed in the season grown. Most importantly, the results demonstrated that fodder hectarage will grow with livestock numbers to insure that sufficient green forage is available seasonally. Two other analyses were performed to demonstrate the need to specify linkages between the crop and livestock sub-sectors. An analysis of transforming the livestock sub-sector from traditional to feedlot-based technology demonstrated that the reduced numbers of non-milking cattle needed for a given output of meat would provide the potential for increased production of various crops and other livestock products. Also, expanded cotton and Irri rice exports, hypothesised to occur through trade liberalisation from the Uruguay Round of the GATT, highlighted other inter-relationships between the crop and livestock sub-sectors. Greater production of both livestock and other crops might accompany the expansion of cotton production but less livestock feed would be available with expanded exports of Irri rice.
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