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排序方式: 共有193条查询结果,搜索用时 46 毫秒
161.
Christoffer Florczak Stig Hebbelstrup Rye Rasmussen Ulrich Thy Jensen Justin M. Stritch Kaare Christensen Asbjørn Sonne Nørgaard Robert Klemmensen 《Public administration》2023,101(3):993-1013
Despite the proliferation of research on public service motivation (PSM), fundamental questions about its origins continue to evade scholars: Is PSM driven by genetics, socialized through experiences, or both? If PSM is socialized, when does socialization occur? Answering these questions is critical for reconciling the state versus trait debate, and for assessing the validity of practical implications prescribed by PSM studies. Utilizing “nature's own experiment,” we adopt a classical twin design with 1035 twin pairs to identify how genetic heritability, a common environment, or unique environment and experiences can explain variation in PSM. Results show that PSM is heavily influenced by individuals' unique environments and experiences; not by genetics. This lends strong evidence to PSM's uniqueness as a motivational construct as related “other-regarding” concepts show sizeable genetic components. Finally, our results corroborate that PSM is a human resource with dynamic properties organizations can cultivate to enhance productivity in public service workforces. 相似文献
162.
Ohlenschlaeger J Nordentoft M Thorup A Jeppesen P Petersen L Christensen TØ Krarup G Jørgensen P 《International journal of law and psychiatry》2008,31(1):72-76
The effect of integrated treatment on the use of coercive measures in first-episode schizophrenia-spectrum disorder in Denmark is not known. A total of 328 patients were randomly assigned to integrated treatment (167 patients) or standard treatment (161 patients). Integrated treatment consisted of assertive community treatment, psycho-educational multi-family groups, and social skills training. Data on coercion were extracted from the register from the National Board of Health, and data on continuity from medical records. Even though the level of continuity seemed higher in integrated treatment, this did not reduce the use of coercive measures compared to the use in standard treatment. 相似文献
163.
The following study examines the reliability of physically matching fragments of bone and other mineral-based biological materials such as shells and teeth. Participants with varying education, training, and experience were asked to complete a matching exercise consisting of intentionally fragmented specimens. Success rates were very high; the positive association (correct match) rate was 0.925, while the nonassociation (overlooked match) rate was 0.075, and negative associations (incorrect matches) occurred at a rate of just 0.001. Results also indicate that those with more education and related experience tended to have higher positive association rates, although not significant statistically. Experienced osteologists, however, completed the matching exercise in significantly less time. Low error rates among both experienced and inexperienced individuals support the reliability and validity of performing physical matches of these materials, and suggest that performance may also be related to an individual's aptitude for spatial tasks or other factors. 相似文献
164.
Koon HE Loreille OM Covington AD Christensen AF Parsons TJ Collins MJ 《Forensic science international》2008,178(2-3):171-177
The US military is committed to recovering and identifying the remains of unknown military service members. Casualties of the Korean War were exhumed from the National Memorial Cemetery of the Pacific, or Punchbowl, and submitted to the Armed Forces DNA Identification Laboratory (AFDIL) for mtDNA sequencing. Contrary to AFDIL's experience on other samples from this era, most failed to yield amplifiable DNA. Suspicion fell on mortuary practices that may have been applied to the remains, evidenced by a white powder found with the bones, and general records suggesting the use of formaldehyde-based stablizing agents. To improve the chances of successful identification of the unknown individuals, we looked for the causes underlying this failure. We did this by examining the state of the collagen, the most abundant biomolecule in bone, by using differential scanning calorimetry (DSC) and transmission electron microscopy (TEM). The DSC analyses showed collagens with a range of different thermal stabilities. When these results were compared with the DNA amplification results, a clear correlation between elevated thermal stability and amplification failure was evident. TEM analysis revealed that fibril integrity was maintained after thermal and acid treatments in the samples which failed amplification. Together these two approaches implicate a stabilization agent as the cause of problems with DNA analysis, presumably due to excessive cross-linking. Following the initial study, the ability of DSC to rapidly identify problem samples was tested in a blind study of 14 samples, the method successfully identifying all the problematic samples from Punchbowl. Within this unusual context, DSC analysis is a useful method to assess the likelihood of successful DNA extraction and amplification. 相似文献
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Tom Christensen 《管理》2001,14(4):457-480
Three interwoven change elements characterize New Public Management: substantial horizontal and vertical specialization, substituting an integrated sector model for a fragmented functional model, and extensive use of contracts as part of a "make the manager manage" kind of incentive system. This article discusses the effects and implications of these reform elements on political-democratic processes in general, and on political, administrative, and public enterprise leadership roles more specifically. Examples from Norway and New Zealand illustrate the discussion. 相似文献
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