There is a large literature on contagion. It is perhaps the most important systemic risk to the financial system. The term is widely used so this covers many topics. The paper starts with a discussion of exactly how the term is used. Perhaps most importantly it is used to refer to the spread of crises from one country to another through real links such as trade, through portfolio rebalancing an...

Motivated by our earlier paper [1], we discuss how the infamous gravitino problem has a natural built in solution within supersymmetry. Supersymmetry allows a large number of flat directions made up of gauge invariant combinations of squarks and sleptons. Out of many at least one generically obtains a large vacuum expectation value during inflation. Gauge bosons and Gauginos then obtain large m...

We propose and investigate different kinetic models for opinion formation, when the opinion formation process depends on an additional independent variable, e.g. a leadership or a spatial variable. More specifically, we consider: (i) opinion dynamics under the effect of opinion leadership, where each individual is characterised not only by its opinion, but also by another independent variable w...

At the 2007 International System Dynamics Society Conference, Professor Jay Forrester posed a challenge: “We need books addressed to the public that are understandable, relevant, important and dramatic”. We need to overcome the “constraints of academe” that inhibit path-breaking work. We need to address “the big issues”. We need to march “upward from the present aimless plateau and start climbi...

determinants of the adoption of land leveling in fars province were investigated through an application of logit model to data collected from a sample of 300 farmers. the results revealed that area under cultivation, farmers' education, earnings beside-farm-income, access to credits, availability of laser applied land leveling instruments and equipments in the region, as well as dam water,...

abstract aim and background: adoption is a subject with prolix antecedent in historical society and culture. child acceptation affects on partner and kinfolk relation; so the family experience recognition help nurse to have deep knowledge about family relation. method and materials: in this phenomenological qualitative study, participants were 15 family with adopted child in shahrekord, iran. t...

this study compared farmers’ rating of extension effectiveness in technology dissemination to the level of adoption. in conducting the study, 180 farmers participating in extension programme in cross-river state were randomly selected through multi-stage random sampling technique. the data collected through a structured questionnaire were analyzed using the t-test of significance of difference ...

this study aimed to identify the factors influencing adoption of integrated pest management (ipm) technologies by paddy farmers in sari county of iran. a sample of 260 farmers who selected randomly, participated in this study through a survey questionnaire. findings of the study revealed a statistically significant positive correlation between adoption of ipm technologies and farmers’ participa...