Drought is a natural disaster. Because a significant impact on the agricultural and economy sector, it affects the lives of local residents. With Using of the remote sensing, drought can be studied through its effects on plants and agriculture resulting in more accurate and effective results found for modeling drought. In this study, the efficiency of agricultural drought indicators for estimat...

objective: the aim of this study was to investigate prenatal and obstetrical outcome in mothers aged 40 years or older. materials and methods: a prospective comparative study was conducted for the women aged 40 years and over who delivered at 20 week's gestation or beyond from january 2004 to december 2005 at four hospitals of tehran university of medical sciences. for comparison, a control gro...

Entrepreneurs often get their ideas from working as employees in established firms. However, employees with ideas can also become intrapreneurs, or even managers of corporate spin-offs. This paper shows how innovation and entrepreneurship are influenced by company policies. Using a multi-task incentives model, we identify a trade-off between focussing employees on their assigned tasks, versus e...

BACKGROUND Increasing life expectancy and decreasing fertility have led to a shift in the workforce age structure towards older age groups. Deteriorating health and reduced work capacity are among the challenges to retaining older workers in the labour force. AIMS To examine whether workplace interventions to facilitate work among employees with health problems or reduced work capacity affect...

ABSTRACT-Due to the important role productivity plays in future decision making and programming, the productivity indexes should have accurate quantities. In this study, Auto-Regressive Distributed Lag (ARDL) and Genetic Algorithm (GA) methods are applied to time series of 1978-2008 to accurately measure total factor productivity (TFP) in the agricultural sector of Iran. The comparison of these...

introduction: when there is no determined value for water (as a public asset) by its trustees and beneficiaries and its allocation method is more dependent on the requirements of water consumers than comparing water affairs benefits with its real value, decision making on which interested group, when and to what extent can use water is a game. this study is aimed to determine sustainable polici...

OBJECTIVES To determine what proportion of employees at the largest private-sector companies in South Africa have access to HIV/AIDS care and treatment, including antiretroviral therapy (ART); how many employees are enrolled in disease management programmes; how many are receiving ART; and which approach to the financing and delivery of care is proving most successful at reaching eligible emplo...