Solution to tangles of mats and maths of rectangles     

Mandar Joshi  Kshitij Khare  Arvind Narayanan  Sandeep Varma 《Resonance》2001,6(10):87-91

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Hardy-Weinberg Equilibrium and the foundations of evolutionary genetics
1. The dance of the genes     

Amitabh Joshi 《Resonance》2008,13(9):812-835

The year 2008 marks the 150th anniversary of the debut of the concept of natural selection as a mechanism of adaptive evolution through the reading of papers by Darwin and Wallace to the Linnaean Society. It also marks the 100th anniversary of the enunciation of the principle defining the inertial state of populations from a genetic viewpoint through the independent publication of papers on the topic by G H Hardy and W Weinberg. In this four-part series, we will examine the significance of the Hardy-Weinberg Equilibrium as a basic model of population genetics that, in turn, forms the foundation for evolutionary genetics. In Part I of this series, we first discuss the historical backdrop to the work of Hardy and Weinberg, and introduce the basic notion of genetic equilibrium.  相似文献   

Gender Differences in the Use and Effectiveness of Personal Response Devices   总被引：5，自引：3，他引：2  

Daniel B. King  Shivani Joshi 《Journal of Science Education and Technology》2008,17(6):544-552

The use of personal response devices (or “clickers”) in the classroom has increased in recent years. While few quantitative studies on the effectiveness of clickers have been published, it is generally reported that clickers have been well-received by the students who use them. Two separate populations (Winter 2006 and Spring 2006) of engineering students were given clickers to use during a general chemistry class. Clicker use was compared to student grades for each course. During both terms, a higher percentage of female students than male students “actively participated” in the lectures, where active participation was defined as answering more than 75% of the clicker questions over the course of the term. Active male students earned final grades about 10 points higher than non-active male students. Active female students, however, scored only about 5 points higher than non-active female students. Student learning was assessed by comparing performance on exam questions and clicker questions with similar content. Students who answered clicker questions correctly were 11–13% more likely to answer the corresponding exam questions correctly than were students who did not answer the clicker question. In this paper, we demonstrate the effectiveness of clicker use in the classroom and examine gender differences associated with this use.  相似文献   

The Relationships Among Perfectionism,Acculturation, and Stress in Asian International Students     

Johanna E. Nilsson  Jenay Butler  Sarah Shouse  Chetan Joshi 《Journal of College Counseling》2008,11(2):147-158

This study examined relationships among perfectionism, acculturation, and stress in 76 Asian international students. Results showed that perfectionism and acculturation predicted stress, together accounting for 50% of the variance in stress. Furthermore, acculturation explained students' experience of stress above and beyond perfectionism, and 1 specific acculturation variable examined, perceived prejudice, revealed the strongest relationship with stress. Implications for providing counseling services to international students and for future research are described.  相似文献   

Vignettes of Haeckel’s Contributions to Biology     

Amitabh Joshi 《Resonance》2018,23(11):1177-1204

Ernst Haeckel was a very versatile and complete biologist, equally at home with imaginative leaps of conceptualization, serious natural history in the wild, and meticulous experimentation in embryology. His work shaped the development of a holistic evolutionary perspective that brought ecology, ontogeny, phylogeny, and biogeography together into a unified explanation of the patterns of diversity seen in the living world. He, along with Darwin and Mendel, was perhaps one of the three most consequential biologists of the nineteenthcentury, in many ways the golden age of biology.  相似文献