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The number of policies promoting collaborative processes in national forest management has increased considerably over the past decade but do mandates alone increase the levels of collaboration in national forest management? Collaborative governance literature identifies the importance of the situational context for the emergence and performance of collaboration but does not identify the role of specific attributes and processes. This article presents a comparative case‐study analysis of factors influencing levels of collaboration in USDA Forest Service stewardship contracting processes. Incorporating concepts from the collaborative governance literature and Institutional Analysis and Development framework we found policy and administrative guidance alone will not increase the use of collaborative processes associated with stewardship contracts. A combination of existing agency‐community planning efforts, leadership, and agency support were essential for collaboration to materialize. Top‐down policy direction meant to increase the use of collaboration to achieve natural resource management objectives must incorporate opportunities to establish these conditions.  相似文献   
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The authors give statistics on most frequent variants of location of primary injuries (LPI) in car drivers (CD) and front seat passengers (FSP) of left-hand wheel cars. There was neither significant intra- and intergroup difference in the incidence of injuries nor LPI both in the groups and between the groups. Prevalence of LPI in CD on the left and in FSP on the right side of the body was not confirmed statistically. Significantly higher frequency of pubic injuries was found in FSP versus CD which is explained by different biomechanical route of the body dislocation in strong primary blow. The authors believe this sign to be distinctive and propose to use it in forensic-medical examinations. They also advocate wider use of section roentgenography and medico-criminalistic methods to raise detectability of characteristic body injuries which is essential because of a great rise in the number of modern cars on the roads decorated with less traumatic materials.  相似文献   
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