نتایج جستجو برای: is so difficult or probably impossible
تعداد نتایج: 8315020 فیلتر نتایج به سال:
Amyotrophic lateral sclerosis (ALS) is proving intractable. Difficulties in pre-clinical studies contribute in small measure to this futility, but the chief reason for failure is an inadequate understanding of disease pathogenesis. Many acquired and inherited processes have been advanced as potential causes of ALS but, while they may predispose to disease, it seems increasingly likely that none...
This article examines the possibilities for health care reform in the 111th Congress. It uses a simple model of policy making to analyze the failure of Congress to pass the Clinton health plan in 1993-1994. It concludes that the factors that created gridlock in the 103rd Congress are likely to have a similar impact in the present.
RÉSUMÉ Dans cet article nous souhaitons mettre en évidence l’utilité d’un étiquetage syntaxique appliqué en amont d’une analyse syntaxique en dépendances. Les règles de la grammaire catégorielle de dépendances du français utilisées pour l’analyse gèrent les dépendances discontinues et les relations syntaxiques à longue distance. Une telle méthode d’analyse génère un nombre conséquent de structu...
any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...
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