نتایج جستجو برای: evenness and heterogeneity indices have significant differences p

تعداد نتایج: 17103888  

2010

Although divided differences of a function are of basic importance in the theory of numerical analysis, they are not nearly as useful as ordinary differences in application. In the first place, they are much harder to generate ; not only because they involve unequal intervals of the argument, but because divisions are involved, often by small numbers. Furthermore, they are harder to interpret t...

2010

Although divided differences of a function are of basic importance in the theory of numerical analysis, they are not nearly as useful as ordinary differences in application. In the first place, they are much harder to generate ; not only because they involve unequal intervals of the argument, but because divisions are involved, often by small numbers. Furthermore, they are harder to interpret t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی دکتر علی شریعتی 1393

this study aimed at examining the effects of iranian efl learners’ anxiety, ambiguity tolerance, and gender on their preferences for corrective feedback (cf, henceforth). the effects were sought with regard to the necessity, frequency, and timing of cf, types of errors that need to be treated, types of cf, and choice of correctors. seventy-five iranian efl students, twenty-eight males and forty...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1389

cultural iran is a scope that is more extended than the political territories of iran as a political unit. this concept means that cultural geography(mehdi moghanlo-1383-1) of iran is greater than its political geography which, according to history, has a long history extending west-east from kandahar to the euphrates and north-south from the persian gulf to the caucasus including transoxiana a...

2016
Leopoldo Díaz-Pérez Fabián Alejandro Rodríguez-Zaragoza Marco Ortiz Amílcar Leví Cupul-Magaña Jose D Carriquiry Eduardo Ríos-Jara Alma Paola Rodríguez-Troncoso María Del Carmen García-Rivas

This study evaluated the relationship between the indices known as the Reef Health Index (RHI) and two-dimensional Coral Health Index (2D-CHI) and different representative metrics of biological, ecological and functional diversity of fish and corals in 101 reef sites located across seven zones in the western Caribbean Sea. Species richness and average taxonomic distinctness were used to asses b...

Journal: :محیط زیست طبیعی 0
ساره حسینی دانشجوی دکتری جنگلداری دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری سید عطاء اله حسینی دانشیار گروه جنگلدای و اقتصاد جنگل دانشگاه تهران

in this study, species richness, evenness and vegetation biodiversity were investigated in stabilized and non-stabilized cut edge areas of chachkam district forest roads in sari forest of iran. 18 micro plots 1×1m (36 micro plots) were sampled to carry out this research on two cut edge areas. number of trees, shrubs and herbaceous were recorded in each micro-plot. significant difference was inv...

Background and Objective: Leishmaniasis is among the seven more significant tropical diseases, and it is a major global health issue with a wide range of clinical symptoms and potentially lethal consequences. Resveratrol and its derivatives have been shown to have anti-Leishmanial properties. This study aimed to use a meta-analysis of relevant papers to determine the leishmanicidal impact of re...

Journal: :Journal of ecoacoustics 2022

The 2020 COVID-19 pandemic and the resulting national international movement restrictions provide a unique opportunity to investigate consequences of changing anthropogenic noise regimes on animal communities soundscapes. Here, I used this lockdown period as natural experiment changes soundscape intensity, structure, dynamics during restricted human activity (lockdown) in suburban Nottingham, U...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1382

‏‎despite the different criticisms on contrastive analysis it has been proved that the results of it(when processed) can be useful in a tefl environment, specially at the level of phonology.this study is an attempt to compare and contrast the sound systems of kurdish and english for pedagogical aims.the consonants,vowels,stress and intonation of the two languages are described by the same model...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه دریانوردی و علوم دریایی چابهار - دانشکده مدیریت 1393

within communicative, interactive, and learner-centered framework of language teaching and learning, students need to learn four skills of listening, speaking, reading, and writing for their educational success. but of all the language skills, reading enjoys a paramount significance in so many second or foreign language academic contexts. in spite of its importance, language learners still have...

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