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Prior work finds that voters punish candidates for sponsoring attack ads. What remains unknown is the extent to which a negative ad is more effective if it is sponsored by a party or an independent group instead. We conducted three experiments in which we randomly assigned participants to view a negative ad that was identical except for its sponsor. We find that candidates can benefit from having a party or group “do their dirty work,” but particularly if a group does, and that the most likely explanation for why this is the case is that many voters simply do not connect candidates to the ads sponsored by parties and groups. We also find that in some circumstances, a group‐sponsored attack ad produces less polarization than one sponsored by a party. We conclude by discussing the implications our research has for current debates about the proper role of independent groups in electoral politics.  相似文献   
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Aminoindanes are a class of novel psychoactive substances (NPSs) that have become more prevalent over the past decade. GC–MS is often utilized for identifying seized drugs and is well regarded for its ability to separate mixtures. However, certain aminoindanes have similar mass spectral data and require specific gas chromatographic stationary phases for separation. Derivatization is an alternative method that can be applied to GC–MS to enhance chromatographic results, providing more selective analysis in seized-drug identification. This study investigates derivatization techniques to provide options for forensic science laboratories in accurately identifying aminoindanes. Three derivatization reagents, N-methyl-bis(trifluoroacetamide) (MBTFA), heptafluorobutyric anhydride (HFBA), and ethyl chloroformate (ECF) were evaluated for the analysis of eight aminoindanes by GC–MS using two common gas chromatographic stationary phases, Rxi®-5Sil MS and Rxi®-1Sil MS. All three derivatization methods successfully isolated eight aminoindanes, including the isomers 4,5-methylenedioxy-2-aminoindane (4,5-MDAI), and 5,6-methylenedioxy-2-aminoindane (5,6-MDAI) that could not be differentiated prior to derivatization. Reduced peak tailing and increased abundance were observed after derivatization for all the compounds, and mass spectra of the derivatives contained individualizing fragment ions that allowed for further characterization of the aminoindanes. This excluded 4,5-MDAI and 5,6-MDAI as they shared the same characteristic ions and were only distinguishable by their retention times. All three derivatization techniques used in this study allow for successful characterization of the aminoindanes and give forensic science laboratories flexibility in their analysis approach when they encounter these compounds.  相似文献   
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Presidential debates allow candidates to send a message directly to voters. We use an experimental design complemented with a content analysis of all presidential debates in 1992, 2004, and 2008 to explore how candidates should and do use agenda setting, framing, and message tone to shape the agenda in debates. We find that candidates are differentially attentive to various topics, depending on the comparative advantage provided by the topic. Yet, this agenda control occurs only at the margins because topic salience in public opinion predicts candidate attention and conditions voters' receptiveness to debate rhetoric. Our findings thus suggest that topic salience constrains candidates' abilities to focus the agenda strategically.

[Supplementary material is available for this article. Go to the publisher's online edition of Political Communication for the following free supplemental resources: Experimental Sample and Randomization; Experimental Treatments; Experimental Results; and the Presidential Debate Rhetoric Codebook.]  相似文献   
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The State Department ranks countries on adherence to minimum standards set forth by the Trafficking Victims Protection Act 2000. The Trafficking in Persons Report (TIP) is updated annually and failure to enact changes to combat trafficking results in higher tier rankings. This paper evaluates the TIP by situating this tool in light of special features of the modern era, such as globalization and risk. Through a survey of the theoretical literature on risk and on trafficking risk factors, we devise six preliminary risk clusters and discuss how the TIP could incorporate governments’ response to trafficking risk factors into the ranking system. Our intentions are to spark debate about how risk factors could be incorporated in the TIP, to provide a preliminary model and to encourage further research in this area.  相似文献   
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This case study discusses the Survivor-Centered Advocacy (SCA) Project, a community-based participatory research (CBPR) project that convened anti-violence advocates from culturally specific communities to design and implement research. The project used a unique approach to build grassroots research capacity and center survivors of intimate partner violence from historically marginalized communities. This approach coalesced into the creation of an exploratory Community-Led Research (CLR) framework that incorporated trauma-informed, research justice and language justice principles. The CLR framework responded to community members’ desire to lead, rather than simply participate in, the research process. As a result, five studies were designed and executed by practitioners turned community-based researchers, most of whom had never before engaged in research, except as subjects. The CLR framework integrated the skills and experiences of community-based and external researchers, and led to high levels of engagement, rich data, more equitable research processes and innovative research projects.  相似文献   
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There is a significant association between childhood abuse and suicidal behavior in low-income African American women with a recent suicide attempt. Increasingly, empirical focus is shifting toward including suicide resilience, which mitigates against suicidal behavior. This cross-sectional study examines childhood abuse, intrapersonal strengths, and suicide resilience in 121 African American women, average age of 36.07 years (SD?=?11.03) with recent exposure to intimate partner violence and a suicide attempt. To address the hypothesis that childhood abuse will be negatively related to suicide resilience and that this effect will be mediated by intrapersonal strengths that serve as protective factors, structural equation modeling examined the relations among three latent variables: childhood abuse (measured via physical, sexual, and emotional abuse), intrapersonal strengths (assessed by self-efficacy and spiritual well-being), and suicide resilience (operationalized via the three components of suicide resilience—internal protective, external protective, and emotional stability). The initial measurement model and the structural model both indicated excellent fit. Results indicated that childhood abuse was negatively associated with intrapersonal strengths and suicide resilience, intrapersonal strengths were positively associated with suicide resilience, and intrapersonal strengths fully mediated the association between childhood abuse and suicide resilience. Thus, the results suggest a positive and protective influence of intrapersonal strengths on suicide resilience in the face of childhood abuse in suicidal African American women. The clinical implications and directions for future research that emerge from these findings are discussed.  相似文献   
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This essay interrogates the assemblage of female sexuality. Drawing on an analysis of Masters and Johnson's anatomical research and primatological research on monkeys, I argue that the female sexuality was the product of encounters between women, machines and monkeys. Orgasm's extra-species life produced a conception of female sexuality as natural in evolutionary and anatomical terms. The set of assumptions that follow this naturalisation of female sexuality through an emphasis on orgasm allow us to further deconstruct notions of female sexuality, naturalness and the politics of knowledge that produce this assemblage. Ultimately, I argue that this focus on anatomy and female orgasm allows us to see the stakes of an anatomically based sexual difference.  相似文献   
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