操纵证券市场若干问题研究

操纵证券市场的本质是价格操纵 ,操纵价格是一种最常见的证券欺诈方式。操纵市场行为可大体分为“虚伪交易型”、“实际交易型”、“恶意散布、制造虚假信息型”与“其他操纵行为”等四大类。建立完善民事赔偿责任制度能够有效的遏止操纵市场行为 ,保护投资者的合法权益。     

Proportional representation and attitudes about politics: results from New Zealand

PR systems often are credited with producing more equitable outcomes between political parties and encouraging wider social group representation than majoritarian systems. Theory suggests that this should instill greater trust, efficacy, and faith in the political system. We assume that citizens disadvantaged by majoritarian rules (political minorities) will have a relatively greater shift toward positive attitudes about democracy following a transition from a majoritarian system to proportional representation. We employ panel data from the 1993–1996 New Zealand Election Study (NZES) to test hypotheses about the effects of electoral system change on attitudes about governmental responsiveness, trust in government, and political efficacy. We find that there is a general shift in mass opinion toward more positive attitudes on some measures of efficacy and responsiveness. Political minorities display a greater shift toward feelings of efficacy than other voters.     

Two strategies for building a personal vote: Personalized representation in the UK and Denmark

Across parliamentary democracies, elected representatives constitute the link between citizens and government. MPs can connect with voters via the party label, or through personalized forms of representation, which is seen to be increasing in importance. However, scholars disagree on what explains variation in MPs' use of personalized representation strategies. In this article, we argue that politicians use different strategies to personalize the link between themselves and citizens: a constituency-oriented and a person-oriented strategy. To test our argument, we develop a new and novel dataset with behavioral measures of personalized representation. Using a content analyses of 698 British and Danish MPs’ personal websites, we demonstrate that the use of personalization strategies is conditional on the incentives MPs face in terms of electoral insecurity, candidate selection procedures, and the electoral context of the system. Our findings show that the level and type of personalized politics vary across political systems and may pose different types of challenges to party democracies.     

The house size effect and the referendum paradox in U.S. presidential elections

Barthélémy et al. (2014), extending the work of Neubauer and Zeitlin (2003), show that some U.S. presidential elections are subject to a ‘House size effect’ in that the winner of the election, i.e., the candidate who wins a majority of electoral votes, depends on the size of the House of Representatives. The conditions for the effect relate to the number of ‘Senate’ versus ‘House’ electoral votes won by each candidate, but the relationship is not straightforward due to ‘locally chaotic’ effects in the apportionment of House seats among the states as House size changes. Clearly a Presidential election that is subject to the House size effect exhibits the referendum paradox, i.e., the electoral vote winner is the popular vote loser, for some House sizes but not for others.     

Voting Advice Applications and electoral turnout

In the last two decades Voting Advice Applications (VAAs) have become popular tools among voters, especially in several countries with a multi-party system. In this paper we test if the use of VAAs stimulates electoral participation. We use survey data from the Netherlands, where such tools are widely used. In order to overcome methodological problems of earlier studies, we use techniques that model the effect of confounding variables as a problem of selection into the treatment (VAA usage). We estimate that VAA usage accounted for about four per cent of the reported turnout in the election. The mobilising effect was largest among groups that typically vote in relatively small numbers, such as young voters and those less knowledgeable about politics.     

Not much happened: The impact of gender quotas in Poland

Poland maintained its open-list PR system but introduced gender quotas in the 2011 parliamentary elections in order to increase the number of women deputies. Yet this change had only a limited impact on women's representation. The 2011 election confirms that ‘favorable’ electoral laws provide opportunities for women, but they cannot guarantee that women will be elected. In particular, the use of quotas alone is not sufficient to ensure high levels of women's representation. The most important factors in explaining the Polish result were 1) the absence of a ‘zipper’, a list ordering that alternates men and women candidates, thus ensuring high list-places for women 2) the parties' favoring of men in their list placement 3) the relative size of the political parties and 4) voters' support for list leaders and incumbent deputies. Despite a disappointing outcome, quotas may be seen as beneficial in increasing women's presence and the potential for further evolution of the electoral system.     

Pretty faces,marginal races: Predicting election outcomes using trait assessments of British parliamentary candidates

The conventional wisdom on Western European politics leads us to believe that all the “action” lies with parties, because the unified parliamentary delegations in Western Europe draw voters' attention to parties' policies and images. Though British elections take place under a single member district plurality system, British parties, like their continental counterparts, are highly centralised and feature disciplined parliamentary delegations. Despite the strong ties between British candidates and their parties, we demonstrate that perceptions of candidates' personal attributes can be used to predict general election outcomes. Using a computer-based survey where subjects are asked to evaluate real British candidates using only rapidly determined first impressions of facial images, we successfully predict outcomes from the 2010 general election. Moreover, we find that perceptions of candidates' relative attractiveness are particularly useful for predicting outcomes in marginal constituencies.     

A systematic approach to study electoral fraud

Integrity of elections relies on fair procedures at different stages of the election process, and fraud can occur in many instances and different forms. This paper provides a general approach for the detection of fraud. While most existing contributions focus on a single instance and form of fraud, we propose a more encompassing approach, testing for several empirical implications of different possible forms of fraud. To illustrate this approach we rely on a case of electoral irregularities in one of the oldest democracies: In a Swiss referendum in 2011, one in twelve municipalities irregularly destroyed the ballots, rendering a recount impossible. We do not know whether this happened due to sloppiness, or to cover possible fraudulent actions. However, one of our statistical tests leads to results, which point to irregularities in some of the municipalities, which lost their ballots: they reported significantly fewer empty ballots than the other municipalities. Relying on several tests leads to the well known multiple comparisons problem. We show two strategies and illustrate strengths and weaknesses of each potential way to deal with multiple tests.     

Assessing the psychological and mechanical impact of electoral rules: A quasi-experiment

The paper assesses the influence of electoral rules on vote choice and election outcomes using a quasi-experiment conducted during a recent Canadian provincial election. Respondents were invited to vote under three voting systems (first past the post, alternative voting and proportional representation) and to answer a short questionnaire. We examine how the distribution of votes and seats is affected, and we ascertain how much of the total difference is due to psychological and mechanical effects. We find that a PR system would have increased legislative fractionalization by the equivalent of one effective party and that the mechanical effect is much more important than the psychological effect. As for AV, its mechanical and psychological effects act in opposite directions.     

Campaigns and the prediction of election outcomes: Can historical and campaign-period prediction models be combined?

There are two approaches to predicting election outcomes: (1) a historical approach, which uses past election results alongside macroeconomic and political variables to forecast election results up to a year in advance, and (2) a campaign-oriented approach, which uses current campaign trends to forecast vote shares at the end of the campaign. They are in some way at odds—one approach says the campaign doesn't matter, the other focuses entirely on the campaign. This article considers whether the two approaches might be usefully combined; it considers whether the prediction errors in historical models may be related to trends during the campaign. That possibility is tested here using 17 elections in the US, UK and Canada, combining historical predictions and automated content analyses of campaign-period media content. Results suggest that campaigns do not account for errors in the historical predictions; but there may be other ways in which campaigns matter in conjunction with historical models.