abstract this paper discusses several commonly used models for strategic marketing¹ including market environmental analysis methods (i.e. swot and pest analysis) and strategic marketing tools and techniques (i.e. boston matrix and shell directional policy matrix)and shows how these models may help a firm to achieve its strategic goals. at first, the main reason for doing this research is de...

Introduction: According to American surgeons' theory, the leading and most preventable cause of death is tobacco use. This country has an annual mortality rate of 440000 individuals to tobacco use. The prevalence of tobacco use is increasing among the young while the age at beginning to smoke is decreasing. The goal of this survey is to investigate effective factors on smoking behavior with BAS...

مقدمه: طول مدت زمان استفاده از گوشی در کارایی برنامه حفاظت شنوایی موثر می باشد. بسیاری از آموزش هایی که در سطح صنایع مختلف انجام می شود بیشتر در زمینه بررسی عوامل موثر بر استفاده از گوشی می باشد ولی در زمینه افزایش مدت زمان استفاده از گوشی، کار زیادی انجام نشده است از این رو هدف مطالعه حاضر بررسی تاثیر مداخله آموزشی بر اساس مدل بزنف در افزایش مدت زمان استفاده کارگران از گوشی حفاظت  شنوایی قرار ...

rivers and runoff have always been of interest to human beings. in order to make use of the proper water resources, human societies, industrial and agricultural centers, etc. have usually been established near rivers. as the time goes on, these societies developed, and therefore water resources were extracted more and more. consequently, conditions of water quality of the rivers experienced rap...

in this thesis, we consider a mathematical model of cancer with completely unknown parameters. we study the stability of critical points which are biologically admissible. then we consider a control on the system and introduce situations at which solutions are attracted to critical points and so the cancer disease has auto healing. the lyapunov stability method is used for estimating the un...

since its introduction in 1959, translation quality assessment (tqa) has been among the most addressed research topics in translation studies. during recent years, there has been a crucial increase on the study of tqa. various methods have come on scene. although these methods are based on scientific theories, most of them have remained at the level of theory. juliane house’s model is among tho...

a semi-empirical mathematical model for predicting physical part of ignition delay period in the combustion of direct - injection diesel engines with swirl is developed . this model based on a single droplet evaporation model . the governing equations , namely , equations of droplet motion , heat and mass transfer were solved simultaneously using a rung-kutta step by step unmerical method . the...

Background: The present study was conducted with the aim of comparing lifestyle education based on the Bezenf model and the World Health Organization model on FBS, 2HPPBS, HbA1c in patients with type II diabetes. Methods: The research method was a semi-experimental and multi-group expanded type with pre-test-post-test designs and a control group with a follow-up period. The statistical populat...

پنل های خورشییدی دارای مشیه ه جریان -ولتاژ غیر خطی بوده و تنها در یک نقطه کار خاص، حداکثر توان را تولید می کنند. این نقطه بهینه توان با تغییر دما و شیدت نور تغییر می کند. روش های مهتلفی برای ردیابی نقطه حداکثر توان به صورت free model و based model معرفی شده است. این تحقیق روش جدیدی جهت بهبود عملکرد ردیابی نقطه حداکثر توان پنل های خورشیدی جدا از شبکه ارائه می دهد و الگوریتم روش پیشینهادی از دو...

چکیده مقدمه: کم خونی فقرآهن یکی از مهمترین موضوعات سلامت عمومی در جهان به شمار می­آید و بر سلامت بسیاری از کودکان و زنان در کشورهای در حال توسعه تأثیر نامطلوب می­گذارد. 25 درصد دانش آموزان به کم خونی فقر آهن مبتلا هستند. این مساله سوء تغذیه عمومی یا آهن کم موجود در رژیم غذایی را  نشان می­دهد. هدف: هدف این تحقیق تعیین ارتقای رفتار تغدیه­ای پیشگیری از کم خونی فقرآهن بر اساس مدل بزنف (basnef) beli...