INFORMATION IMPACTS AND DETERMINANTS OF INFORMATION SELECTION: AN EXPERIMENTAL APPROACH

Laboratory experimentation was used to assess the impacts of information disclosure in imperfect markets. A dual oligopoly market structure was designed with contract information disclosed to subjects under three treatments: no, partial, and full disclosure. Regression analysis revealed some increase in selling price with full information disclosure, but no discernable effects on negotiated prices with partial disclosure. Alternative specifications showed large traders earning significantly lower profits, and information on large traders significantly beneficial to both buyers and sellers. Probit analysis of information selection determinants revealed no significant economic content in trader requests for information under partial disclosure.Marketing,

KNOWLEDGE GAPS FACING SMALLER FIRMS IN INTERNATIONAL AGRICULTURAL PRODUCT MARKETING

Knowledge gaps facing smaller firms in the U.S. food processing and distribution industries are discussed in the context of export decisions which these firms must make. The paper focuses on resources available for export assistance to smaller firms. It is argued that much of the assistance available to smaller firms is targeted to logistical problems facing all exporting firms. Less help is available as firms seek assistance in specific market research and product promotion. It is in these areas that land grant universities and federally funded Centers may be the most helpful resources available to smaller firms considering international marketing activities.International Relations/Trade, Marketing,

TRANSITION, TRANSFORMATION, AND TURMOIL: GLOBAL ECONOMIC IMPACTS ON U.S. FOOD EXPORTS

International Relations/Trade,

COTTON EXPORTS: ANALYSIS OF THE RELATIONSHIPS BETWEEN SALES AND SHIPMENTS

Relationships between cotton export sales and export shipments are examined, and a quarter-specific lag structure is estimated. Two econometric systems are estimated, one employing export shipments and the other using export sales. Results indicate that sales are more sensitive to changes in economic variables than shipments and that stocks net of outstanding export sales are more responsive to price and interest rate changes than gross stocks. Sales and shipments are different variables and cannot substitute for one another in econometric modelling. Use of export sales data should be considered in estimation of export demand and stock demand parameters.International Relations/Trade,

Usability Testing and Instruction Librarians: A Perfect Pair.

This study examines how librarians are experiencing usability testing and how their observations are influencing library instruction. A survey of instruction librarians illustrates how usability testing and library instruction are connected. Survey results prove instruction librarians are involved in usability testing. Furthermore, their participation in usability studies has led instruction librarians to alter their instructional methods. An overwhelming majority changed one or more instructional tools as a result of usability testing, and many reported creating new instructional resources. The authors add their own insights as both instruction librarians and participants in usability testing

Preliminary evaluation of radar imagery of Yellowstone Park, Wyoming

Evaluation of radar imagery of Yellowstone Park, Wyomin

EFFECT OF CONTRACT DISCLOSURE ON PRICE: RAILROAD GRAIN CONTRACTING IN THE PLAINS

The Staggers Rail Act of 1980 granted railroads freedom to establish rates and enter into confidential contracts with grain shippers. Recent legislation (1986) required that certain contract terms be disclosed. This study shows rail rates in the Plains region commenced an upward trend after implementation of the disclosure policy. Results suggest contract disclosure and increased reliance on posted tariffs facilitated rate coordination within the oligopolistic railroad industry.Public Economics,

Widespread gas hydrate instability on the upper U.S. Beaufort margin

Author Posting. © American Geophysical Union, 2014. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Solid Earth 119 (2014): 8594–8609, doi:10.1002/2014JB011290.The most climate-sensitive methane hydrate deposits occur on upper continental slopes at depths close to the minimum pressure and maximum temperature for gas hydrate stability. At these water depths, small perturbations in intermediate ocean water temperatures can lead to gas hydrate dissociation. The Arctic Ocean has experienced more dramatic warming than lower latitudes, but observational data have not been used to study the interplay between upper slope gas hydrates and warming ocean waters. Here we use (a) legacy seismic data that constrain upper slope gas hydrate distributions on the U.S. Beaufort Sea margin, (b) Alaskan North Slope borehole data and offshore thermal gradients determined from gas hydrate stability zone thickness to infer regional heat flow, and (c) 1088 direct measurements to characterize multidecadal intermediate ocean warming in the U.S. Beaufort Sea. Combining these data with a three-dimensional thermal model shows that the observed gas hydrate stability zone is too deep by 100 to 250 m. The disparity can be partially attributed to several processes, but the most important is the reequilibration (thinning) of gas hydrates in response to significant (~0.5°C at 2σ certainty) warming of intermediate ocean temperatures over 39 years in a depth range that brackets the upper slope extent of the gas hydrate stability zone. Even in the absence of additional ocean warming, 0.44 to 2.2 Gt of methane could be released from reequilibrating gas hydrates into the sediments underlying an area of ~5–7.5 × 103 km2 on the U.S. Beaufort Sea upper slope during the next century.This work was supported by the U.S. Department of Energy (DOE), grant DE-FE0010180 to SMU and a USGS-DOE interagency agreement DE-FE0005806.2015-06-0

THE EFFECTS OF PERSONAL INNOVATIVENESS , PERCEIVED RISK , AND COMPUTER SELF -EFFICACY ON ONLINE PURCHASING INTENT

The rapid growth of e-commerce makes it important for the success of companies to understand both the factors that facilitate and are barriers to these transactions. Therefore, the purpose of this study is to investigate the relationships between perceived Internet risk, personal innovativeness and computer/web self-efficacy, and online purchases intentions as three of these factors. Results indicate that perceived Internet risk, personal innovativeness and computer/web self-efficacy are all strongly related to online purchasing intentions. There is also a strong relationship between computer self- efficacy and personal innovativeness, two of the values-compatibility variables related to intention to purchase on-line. Suggestions for future research to test the applicability of the Technology Acceptance Model and/or its extensions in the e-commerce sector, as well as the antecedents of perceived usefulness in this setting, are discussed

Novel structural features of the ripple phase of phospholipids

We have calculated the electron density maps of the ripple phase of dimyristoylphosphatidylcholine (DMPC) and palmitoyl-oleoyl phosphatidylcholine (POPC) multibilayers at different temperatures and fixed relative humidity. Our analysis establishes, for the first time, the existence of an average tilt of the hydrocarbon chains of the lipid molecules along the direction of the ripple wave vector, which we believe is responsible for the occurrence of asymmetric ripples in these systems