نتایج جستجو برای: model development and validation
تعداد نتایج: 17370148 فیلتر نتایج به سال:
mathematical models have the potential to provide a cost-effective, objective, and flexible approach to assessing management decisions, particularly when these decisions are strategic alternatives. in some instances, mathematical model is the only means available for evaluating and testing alternatives. however, in order for this potential to be realized, models must be valid for the applicati...
some researches made in the field of agency problem issue, deal with the role of control systems regarding owners and managers. in this research the relationship between the two control mechanisms, namely the voluntary disclosure (external control mechanism) and outside directors (internal control mechanism), which are reductive of agency problems, has been studied. for this reason, a sample ...
Background & Aims: Trichotillomania (TTM) is an unknown disorder and resistant to treatment. The purpose of this study was to develop and validate the new metacognitive-cognitive-behavioral model for trichotillomania. Methods: The present study was a description and correlation study. In this study, 635 participants (304 male and 331 female) were selected. The participants completed the Massach...
abstract nowadaysphotovoltaic solar cells (pvs) areacknowledged the fastest growing energy technology in the word, however, they only account for only fraction of current global renewable energy capacity. it isrecognized that this incomplete market penetration has been largely a result of the technology’sexcessive cost. so researchers are trying to find innovative, economic way with theaim of ...
Verification and validation (V&V) are two important tasks that need to be done during software development. There are many suggestions in the literature for techniques that can be used during V&V. Some of these are varied and need to be adapted to the particular software product being developed. There are no defined V&V techniques that can be applied to agent-based simulations specifically. It ...
the quantitative structure–property relationship (qspr) method is used to develop the correlation between structures of crude oil hydrocarbons (80 compounds) and their boiling point and water solubility. sub-structural molecular fragments (smf) calculated from structure alone were used to represent molecular structures. a subset of the calculated fragments selected using stepwise regression (fo...
Design and Validation of an Instructional Design Model for Reflection-Based Learning Environments E. Azimi, Ph.D.* J. Haatami, Ph.D.** H. FarDaanesh, Ph.D.*** O. Noroozi, Ph.D.**** Reflection on teaching is a known method of learning to teach. Reflection is a form of thinking wherein improvement is sought through self-observation. Recent approaches to teaching practicums have gravi...
background: multiple severity scoring systems have been devised and evaluated in adult sepsis, but a simplified scoring model for pediatric sepsis has not yet been developed. this study aimed to develop and validate a new scoring model to stratify the severity of pediatric sepsis, thus assisting the treatment of sepsis in children. methods: data from 634 consecutive patients who presented with ...
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