نتایج جستجو برای: normal hazard model

تعداد نتایج: 2635263  

Journal: :journal of biostatistics and epidemiology 0
mahboubeh rasouli department of biostatistics, public health school, iran university of medical sciences, tehran, iran mahmoodreza ghadimi department of statistics, iranian social security organization, tehran, iran masoomeh shohani department of nursing, faculty of allied medical sciences, ilam university of medical sciences, ilam, iran asieh ashouri guilan interventional cardiovascular research center, heshmat hospital, guilan university of medical sciences, rasht, iran samaneh hosseinzadeh department of biostatistics, university of social welfare and rehabilitation sciences, tehran, iran kazem mohammad department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran

background & aim: esophageal cancer is one of the main common causes of death. the high prevalence of esophageal cancer in northern iran is an important public health problem. the main aim of this paper was to assess the factors affecting survival of  atients with esophageal cancer in neighbor provinces around the caspian sea using weibull mixture cure model and mixture cure model based on a no...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده دامپزشکی 1393

جهت ارزیابی کمی آثار بیماری های لوکوز گاوی، رینوتراکئیت عفونی گاوی، یون و نئواسپوروزیس بر عملکرد تولیدی، تولید مثلی و نرخ حذف در یک گله گاو شیری صنعتی مطالعه حاضر طراحی و اجرا شد. در زمان تست در گله 638 رأس گاو شیری حضور داشتند که نتیجه تست برای آن ها مشخص بود و وارد مطالعه شدند. برای هر گاو سن دام، شکم زایش، وضعیت زایمان (طبیعی، سخت زایی یا مرده زایی و سقط) و تاریخ زایش برای اولین زایمان پس از...

Journal: :Studia i Prace WNEiZ 2016

Journal: :Journal of Multivariate Analysis 2000

ژورنال: توانبخشی 2013

Objective: Schizophrenia is to be emphasized due to its high prevalence, severity of symptoms and frequent recurrences. In this study the hazard of recurrence of Schizophrenia was analyzed by using recurrent events models. Materials & Methods: This study was an observational prospective study. Data was gathered from 159 registered schizophrenia patients at Razi Psychiatric Center. The type I...

Bahrampour , Abbas , Khalilian, Alireza , Nikaeen, Roja ,

Background and Purpose: Gastric cancer is the third leading cause of mortality in Iran after cardiovascular diseases and accidents. The aim of the present study was to assess survival and it’s affecting factors in gastric cancer patients through using Cox and parametric models along with frailty. Materials and Methods: In this study, the medical records of gastric cancer patients treat...

ژورنال: طلوع بهداشت یزد 2017
امیدوار, راضیه, فلاح زاده, حسین, مهربانی, مریم, میرزایی, مسعود, نماینده, مهدیه,

Introduction: Heart disease is the leading cause of death in the world. Acute Myocardial Infarction (AMI) is one of the most common cause of mortality causes in Iran. The purpose of this study is survey of the transition rates between heart disease stages and the effect of metabolic syndrome hazard on these transition rates by using a multi-state Markov model. Materials and Methods: 457 patient...

Journal: :اکو هیدرولوژی 0
کاظم صابر چناری دانشجوی دکتری مهندسی آبخیزداری، دانشکدۀ مرتع و آبخیزداری، دانشگاه علوم کشاورزی و منابع طبیعی گرگان عبدالرضا بهره مند دانشیار گروه مهندسی آبخیزداری، دانشکدۀ مرتع و آبخیزداری، دانشگاه علوم کشاورزی و منابع طبیعی گرگان واحد بردی شیخ دانشیار گروه مهندسی آبخیزداری، دانشکدۀ مرتع و آبخیزداری، دانشگاه علوم کشاورزی و منابع طبیعی گرگان چوقی بایرام کمکی استادیار گروه مدیریت مناطق بیابانی، دانشکدۀ مرتع و آبخیزداری، دانشگاه علوم کشاورزی و منابع طبیعی گرگان

the goal of this research is gully erosion hazard zoning by using dempster-shafer theory for the garnaveh watershed (golestan province). for this purpose, at first a gully erosion inventory map with the scale of 1:200000 (dependent variable) for the gharnaveh watershed has been prepared using multiple field surveys and satellite pictures. from total gullies 70% of them have randomly selected fo...

Journal: :پژوهش های حفاظت آب و خاک 0

nowadays, occurrence of mass movement in the northern forests ofiran, especially in the golestan province is turning to be a usual phenomenon. because of decay of vegetation cover, prediction of landslide occurrence will prevent its damages. landslide hazard zonation is a suitable way in this case. selection of the best model is a way to decrease costs and time. consequently, land slide hazard ...

Journal: :international journal of mining and geo-engineering 0
ali nouri qarahasanlou ph.d candidate of mine engineering in faculty of mining, petroleum & geophysics, shahrood university of technology, shahrood, iran mohammad ataei faculty member of mining engineering in faculty of mining, petroleum & geophysics, shahrood university of technology, shahrood, iran reza khalokakaie faculty member of mining engineering in faculty of mining, petroleum & geophysics, shahrood university of technology, shahrood, iran behzad ghodrati associate professor at luleå university of technology, lulea, sweden rasoul jafarei m.sc. of mining engineering of sahand university of technology, iran

tires represent a critical spare part in mines. there is a shortage of medium and large tires. in addition, with increased mining activities and the creation of new mines, the demand for tires has increased significantly. thus, it is particularly important for mining engineers to identify tire characteristics and correctly manage the spare part inventory. spare parts management is critical from...

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