This empirical study attempts to verify non-linearity relationships among three quality dimensions and user satisfaction from the DeLone and McLean IS Success Model. We use survey data from Agriculture integrated eXcellence systems (AgriX) users and a multiple regression analysis with dummy variables to analyze separately high and low performance groups. Results from the analysis suggest that i...

Employee portals are utilized by many companies to improve information exchange and communication between their employees as well as to better support business processes. Assessing the benefits of employee portals has become important, owing to limited IT budgets and the need to justify investments in portals. In this paper, we propose a conceptual model for measuring the effectiveness of emplo...

The present research-in-progress makes significant contribution to the research in the e-enabled supply chain management (eSCM) area by extending the DeLone and McLean information systems success model and e-commerce success model to an eSCM success model. It also extends the earlier Mahmood et al. (2005) eSCM success model by incorporating the service quality construct introduced in the DeLone...

Evaluation of the success of professional virtual communities (VCs) has been the focus of many organizations. However, there are still few empirical studies conducted to examine online knowledge sharing behavior that has been thought as the most important element for VC success. In this study, by integrating two schools of thoughts (trust theory and self-efficacy expectation) with IS Success Mo...

grape berry moth, lobesia botrana (denis and schiff.) is a destructive pest of grapevine in orumieh (northwest, iran) vineyards. it is mainly controled through application of broad-spectrum insecticides, which can adversely affect vineyard ecosystem and consequently human health. since a first step in setting up an ipm program is to assess the biological control agents within the ecosystem, so ...

The effect of crop sequence on parasitism of second-stage juveniles (J2) of Heterodera glycines by Hirsutella rhossiliensis was investigated. Data were collected from plots of a long-term crop rotation experiment established in 1982. Crop sequences included (i) continuous monoculture of corn and soybean; (ii) annual rotation of the two crops; and (iii) 1, 2, 3, 4, or 5 years of each crop follow...

Rhagoletis pomonella (Diptera: Tephritidae) populations in North America have diverged by exploiting host plants with varying fruiting phenologies in environments that differ markedly in temperature and humidity. As a result, four genetically and ecologically distinct R. pomonella populations that display partial reproductive isolation have evolved. Host shifting by Rhagoletis and similar evolu...

Carrot, a highly profitable crop in Israel, is severely damaged by Phelipanche aegyptiaca parasitism. Herbicides can effectively control the parasite and prevent damage, but for optimal results, knowledge about the soil-subsurface phenological stage of the parasite is essential. Parasitism dynamics models have been successfully developed for the parasites P. aegyptiaca, Orobanche cumana, and Or...

The immunopathological evaluation of the hepatic compartment associated with parasitism and biochemical findings are essential for understanding the genesis of hepatomegaly in canine visceral leishmaniasis (CVL). Three clinical groups of dogs naturally infected with Leishmania chagasi [i.e., asymptomatic (AD, n=12), oligosymptomatic (OD, n=12) and symptomatic (SD, n=17)] were assessed and compa...

The rates of parasitism of Theridion evexum by the parasitoid wasp Zatypota petronae, and Allocyclosa bifurca by Polysphincta gutfreundi, were followed for two years. Parasitism of T. evexum was very low (mean 1.39 +/- 1.8%), and restricted to nearly seven months of the year. Parasitism of A. bifurca was higher (mean 7.8 +/- 7.6%), and did not show a seasonal pattern. Reproduction of the host s...