نتایج جستجو برای: prevalence study

تعداد نتایج: 4110273  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده ادبیات و علوم انسانی 1388

the purpose of this study was to investigate how english language teachers in mashhad who teach students in the pre-university cycle perceived the impact of the efltee on their teaching. the target population was nearly all pre-university english language teachers in seven districts of mashhad in the scholastic year 2008/2009. a survey questionnaire which consisted of (36) likert type items, wa...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده ادبیات و زبانهای خارجی 1393

abstract in written mode of language, metadiscourse markers are used commonly to help writers in general and academic writers in particular to produce coherent and professional texts. the purpose of the present study was to compare introduction sections of applied linguistics and physics articles regarding their use of interactive and interactional metadiscourse markers based on the model pro...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1391

چکیده ندارد.

Journal: :Revista panamericana de salud publica = Pan American journal of public health 2000
S C Rawlins P Lammie T Tiwari P Pons D D Chadee B F Oostburg S Baboolal

In order to support the case for a certification of elimination of lymphatic filariasis (LF) in some Caribbean countries, we compared the prevalence of circulating Wuchereria bancrofti antigen in communities in Guyana, Suriname, and Trinidad. For the study, we assayed school children in six communities in Guyana, five communities in Suriname, and three communities in Trinidad for the prevalence...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ولی عصر (عج) - رفسنجان - دانشکده ریاضی 1392

let h be a separable hilbert space and let b be the set of bessel sequences in h. by using several interesting results in operator theory we study some topological properties of frames and riesz bases by constructing a banach space structure on b. the convergence of a sequence of elements in b is de_ned and we determine whether important properties of the sequence is preserved under the con...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند 1388

a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...

Journal: :iranian red crescent medical journal 0
mohammadtaghi palizgir rheumatology research center, tehran university of medical sciences, tehran, ir iran mahdi mahmoudi rheumatology research center, tehran university of medical sciences, tehran, ir iran mostafa qorbani department of community medicine, school of medicine, alborz university of medical sciences, karaj, ir iran shirin djalalinia non-communicable diseases research center, endocrinology and metabolism population sciences institute, tehran university of medical sciences, tehran, ir iran shayan mostafaei department of biostatistics, faculty of medical sciences, terabit modares university, tehran, ir iran farhad shahram rheumatology research center, tehran university of medical sciences, tehran, ir iran; m.d, rheumatology research center, shariati hospital, tehran university of medical sciences, kargar ave., tehran, ir iran. tel/fax: +98-2188220067, po-box: 1411713137

context this systematic review and meta-analysis was performed to determine the prevalence (by overall relative frequency) and clinical information of the behcet’s disease in middle east and north africa (mena) and it has an important effect on the health policy and performing complementary studies in future. evidence acquisition we performed this systematic literature review from several datab...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کاشان - دانشکده ادبیات و زبانهای خارجی 1392

abstract this study aimed at investigating the possible relationship between self-assessment in writing and self-regulation of iranian efl learners. the main purpose of the study was not only to report and inform about this relationship, but also to investigate and find practical outcomes of the incorporation of self-assessment in writing, such as improving writing skill. the research was carr...

Journal: :Journal of the Medical Association of Thailand = Chotmaihet thangphaet 2006
Suda Louisirirotchanakul Sontana Siritantikorn Uraiwan Kositanont Wannee Kantakamalakul Ruengpuang Sutthent Prasert Auewarakul Rutt Chuachoowong Chantapong Wasi Pilaipan Puthavathana

OBJECTIVE The aim of the present report was to observe the trend of seroprevalence rates of HIV seropositivity for routine services at Siriraj Hospital for 13 years. MATERIAL AND METHOD The prevalence rate of HIV seropositivity was analyzed in three groups of subjects: 1) patients who attended the hospital with HIV related diseases; 2) pregnant women at first visit to the antenatal care clini...

Journal: :The European respiratory journal 2002
M A Poyser H Nelson R I Ehrlich E D Bateman S Parnell A Puterman E Weinberg

This study used the international study of asthma and allergies in childhood (ISAAC) to investigate the association between asthma and socioeconomic deprivation among young adolescents in Cape Town, South Africa. The completed ISAAC written and video questionnaires of 4,706 13-14-yr-old school pupils were used. The prevalence of asthma symptoms was analysed by a local index of socioeconomic dep...

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