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Edwin L. Cooper Ph.D. 《Endeavour》1980,4(4):160-165
The life of animals can be sustained only if the cellular environment can be closely controlled. Elaborate processes have, therefore, been evolved to detect and eliminate foreign material in the body, including tumour cells. An understanding of these processes is of great medical importance. This article reviews current ideas of how defence mechanisms have developed during the evolution of mammals from primitive ancestors. 相似文献
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Edwin L. Herr Norman E. Amundson William A. Borgen 《International journal for the advancement of counseling》1990,13(4):295-313
In Europe and in North America, the creation of new economic alliances that are boundary free for corporations and workers in the nations involved will stimulate new needs for counseling. Planning for counseling to deal with the individual needs caused by economic boundary shifting should encompass two broad themes: (1) the likely psychological dynamics of boundary changing; and (2) the possible effects of boundary changing on the structure and choice of and planning for occupations.As economic structures change, counselors and counseling will need to address the resulting transformations of the psychological environments, the sets of behavioral expectations, the national mythologies and social metaphors in which persons negotiate their identities, find their sources of self-validation and pursue a career. The counselors will need to be prepared to deal with the stresses and anxieties that accompany such change as well as the threats to cultural identity that accompany worker migration from nations of origin. Assisting workers to deal with evolving skill requirements from new technologies, cultural transitions, retraining, underemployment, and unemployment will become increasingly important aspects of the counselor's agenda.The Pennsylvania State University and The University of British Columbia 相似文献
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A comprehensive history of Astronomy should show in reasonable chronological order, the contributions from wherever they arise in the world, once they are reliably documented. However, the authors note that consistently, the extremely rich contributions from Ancient Indian scholars like Aryabatha and Bhramagupta are omitted in Eurocentric education and syllabi. It is speculated whether religious underpinnings could have been responsible for its suppression in the past. An appeal is made to represent the history of Astronomy in Eurocentric versions, to be inclusive of Indian Astronomy as accurately and completely as possible in science education. 相似文献
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Summary A sample school population of 75 family units of equal size was investigated for expression of specific reading disability.
25.3% of the total children showed specific reading disability as defined in this study. By using spelling achievement as
the criterion for the presence of the disability, the incidence of the disorder was shown to be much higher in certain families
than in others, with clear sibling aggregation. The siblings of specific-reading-disability cases demonstrated lower spelling
competence than the total siblings in normal families, even when well above a crippling level. Both within individual families
and by grades, the spelling rating in relation to grade norms of the specific-reading-disability family cases with their siblings
tended to decline with age, in contrast to normal families where it tended to improve with age. This pattern was even more
striking if the greater language competence of females, now quite generally accepted and further supported by this study,
was taken into account. It was demonstrated that the above patterns were not primarily a product of intelligence level or
teaching methods. The bearing of these findings on the tenability of the most common, current hypotheses concerning causation
was briefly discussed.
From the Language Clinic and Division of Neurology, Massachusetts General Hospital. 相似文献