the aim of this study was to examine whether the secreted fluid from the uterus influences the survival and fertilization capacity of fowl sperm in the hen oviduct. hens with either regular uterine fluid secretion or irregular uterine fluid secretion were artificially inseminated through the transfer of sperm into the uterus. twenty-four hours after  artificial insemination, 3 hens with regular...

history of language teaching methodologies is characterized by variety of syllabuses equal to the number of teaching methods. following the ups and downs in teaching methods, syllabuses have had the same destiny. in line with the humanistic trend in this arena, whole learner involvement received prime significance to the extent that many favor negotiated syllabus in language teaching and lea...

objective: the aim of the current research was to investigate the effectiveness of precision teaching on reading ability of students with learning disability. method: the research method was semi- experimental with pretest – posttest design. statistical population consisted of all the 3 rd grade elementary girl students with learning disability in city of isfahan during 1389-1390 academic years...

We describe an experimental investigation of the satissability phase transition for several diierent classes of randomly generated problems. We show that the \conventional" picture of easy-hard-easy problem diiculty is inadequate. In particular, there is a region of very variable problem dii-culty where problems are typically underconstrained and satissable. Within this region, problems can be ...