Modeling quality of two different algorithms for the v number, the main parameter for many molecular connectivity indices, has been tested. The new algorithms for v are able to take into account the inner-core electrons of any heteroatom with the principal quantum number n 2. Both algorithms are based on the concept of regular complete graphs, which are an appropriate tool for completing the gr...

INTRODUCTION Cancer is a complex disorder whose detection and monitoring remains challenging. A biological modeling system, the biology of functions (BoF), claims to be able to evaluate physiologic elements related to carcinogenic activity. A pilot study was undertaken to evaluate the accuracy of the BoF in detecting differences between cancer cases and matched controls. MATERIALS AND METHODS...

One of the challenges in process control is prov id ing reliable control of poor ly understood systems. Before such a system can be cont ro l led we must f i rst be able to predict its future behavior-so that we know what control action is necessary. Th is paper presents two approaches to this predict ion task, both using qual i tat ive models augmented by records of histor ical system behavior...

one of the influential tools concerning the rangeland and vegetation sciences isthe technology of remote sensing and satellite data. satellite data have played essentialroles in preparing the needed information for studying the vegetation. vegetation has beenwidely recognized as one of the best indicators for determining the land conditions. usingvegetation indices is one of the techniques of r...

the present study compared simple thermal indices and the indices derived from energy budget models in the northwest of iran. for this purpose, the air temperature, solar radiation, relative humidity, cloud, cover and wind speed of 13 meteorological stations in the northwest of iran during the  the period of 1986 to 2007 were selected for comparison. the results which were extracted using biokl...

Demand for information that can be used to manage loggerhead shrikes has recently increased because of concern over declining populations and loss of open, non-forested habitat. A previously-developed habitat model was modified to predict shrike habitat quality on Fort Riley Military Reservation (FRMR) in Kansas. Shrike habitat suitability indices were calculated based on the amount of potentia...

Plant architecture is an important agronomic trait, and improving plant architecture has attracted the attention of scientists for decades, particularly studies to create desirable plant architecture for high grain yields through breeding and culture practices. However, many important structural phenotypic traits still lack quantitative description and modeling on structural-functional relativi...

the main aim of the current paper is the formulating and validation of suitable indices to analyze spatial agricultural development inequalities in fars province. the study was carried out in two phases. in phase one with a review of literature, regarding agricultural development, spatial inequality, along with its indicators, 92 agricultural development indicators were identified. these indice...