نتایج جستجو برای: zero model

تعداد نتایج: 2215220  

Journal: :تحقیقات مهندسی کشاورزی 0
سیدمحمدرضا امینی زاده دانشجوی کارشناسی ارشد رشتة آبیاری و زهکشی از گروه آبیاری دانشگاه تهران محمد محمودیان شوشتری استــاد گروه مهندسی عمران، دانشگاه شهید چمران اهواز عبدالمجید لیاقت استادیار گروه مهندسی آبیاری و آبادانی دانشگاه تهران. صلاح کوچک زاده دانشیار گروه مهندسی آبیاری و آبادانی دانشگاه تهران.

infiltration in furrow irrigation is 2-d which depends on both time and surface characteristics at which infiltration occurs. however, in many furrow irrigation models, infiltration is determined as a function of infiltration time opportunity, assuming the variation of weted perimeter is low along furrow. in order to compare the proposed asumptions, two zero-inertia furrow irrigation models wer...

Journal: :journal of medical signals and sensors 0
saeid rashidi ali fallah farzad towhidkhah

with the increase of communication and financial transaction through internet, on-line signature verification is an accepted biometric technology for access control and plays a significant role in authenticity and authorization in modernized society. therefore, fast and precise algorithms for the signature verification are very attractive. the goal of this paper is modeling of velocity signal t...

Journal: :international journal of advanced design and manufacturing technology 0
venkata krishna murthy vivekananda institute of science and information technology, affiliated to jntu, hyderabad m.v.s. murali krishna chaitanya bharathi institute of technology, gandipet, hyderabad-500 075. andhra pradesh, india

investigations are carried out to evaluate the performance of a low heat rejection (lhr) diesel engine consisting of air gap insulated piston with 3-mm air gap, with superni (an alloy of nickel) crown and air gap insulated liner with superni insert with different operating conditions of crude jatropha oil with varied injection timing and injection pressure.  performance parameters of brake ther...

Journal: :iranian journal of public health 0
afshin almasi abbas rahimiforoushani mohammad reza eshraghian kazem mohammad yahya pasdar mohammad javad tar­rahi

background: the aim of this study was to assess the associations between nutrition and dental caries in permanent dentition among schoolchildren. methods: a cross-sectional survey was undertaken on 698 schoolchildren aged 10 to 12 yr from a random sample of primary schools in kermanshah, western iran, in 2014. the study was based on the data obtained from the questionnaire containing informatio...

پایان نامه :دانشگاه تربیت معلم - سبزوار - دانشکده ریاضی و کامپیوتر 1392

در این پایان نامه ما، گراف کلاس های هم ارزی مقسوم علیه های صفر یک حلقه جابجایی r را مطالعه می کنیم. در ادامه چگونگی دریافت اطلاعاتی درباره حلقه r از این ساختار را نشان می دهیم. به ویژه چگونگی شناسایی اول وابسته های حلقه r را به کمک گراف کلاس های هم ارزی مقسوم علیه های صفر آن تعیین می کنیم. ایده اصلی این پایان نامه از مقاله s. spiroff, c. wickham, a zero divisor graph determind by equivalence...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1376

this thesis deals with the construction of some function algebras whose corresponding semigroup compactification are universal with respect to some properies of their enveloping semigroups. the special properties are of beigan a left zero, a left simple, a group, an inflation of the right zero, and an inflation of the rectangular band.

Journal: :تحقیقات مهندسی کشاورزی 0
منصور پاره کار استادیار مؤسسه تحقیقات فنی و مهندسی کشاورزی علی نشاط دانشجوی دوره دکتری آبیاری، واحد علوم و تحقیقات دانشگاه آزاد اسلامی، تهران فریدون کاوه دانشیار دانشگاه آزاد اسلامی، واحد علوم و تحقیقات

evaporation from the soil surface has an important role in the water balance model in nature, so that the major part of rain fall and irrigation water in arid and semi-arid regions is lost via evaporation from the soil surface. in such areas, there are some regions with high water table and because of evaporation from the soil surface, salts accumulation also occur in the soil surface. so evapo...

Journal: :تحقیقات نظام سلامت 0
زهرا موسوی آذرنگ کارشناسی ارشد آمار زیستی، دانشکده بهداشت، دانشگاه علوم پزشکی شهرکرد، شهرکرد، ایران سلیمان خیری دانشیار آمار زیستی، دانشکده بهداشت، دانشگاه علوم پزشکی شهرکرد، شهرکرد، ایران (نویسنده مسؤول) مرتضی سدهی استادیار آمار زیستی، دانشکده بهداشت، دانشگاه علوم پزشکی شهرکرد، شهرکرد، ایران

background : to prepare safe and adequate blood supply to meet patients’ needs and ensure a sufficient number of regular blood donors, knowledge about factors encouraging people to donate blood regularly is essential. considering its importance, we aimed to identifying the effective factors of the return to blood donation in based on zero-inflated count regression models using bayesian approach...

Journal: :journal of quality engineering and production optimization 0
mohammad saber fallahnezhad university of yazd ahmad ahmadi yazdi yazd university parvin abdollahi yazd university muhammad aslam department of statistics, forman christian college university lahore 54000, pakistan

in zero acceptance number sampling plans, the sample items of an incoming lot are inspected one by one. the proposed method in this research follows these rules: if the number of nonconforming items in the first sample is equal to zero, the lot is accepted but if the number of nonconforming items is equal to one, then second sample is taken and the policy of zero acceptance number would be appl...

ژورنال: اندیشه آماری 2018

In this paper‎, ‎we ‎propose ‎Hurdle regression models for analysing count responses with extra zeros‎. A method of estimating maximum likelihood is used to estimate model parameters. The application of the proposed model is presented in insurance dataset‎. In this example‎, there are many numbers of claims equal to zero is considered that clarify the application of the model with a zero-inflat...

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