Capacity constraints and the dynamics of underwriting profits

The presence of an underwriting profit cycle in property/liability insurance has become a stylized fact. Models of this'underwriting cycle'imply that the insurance market is governed by two regimes, as capacity is constrained or not. We apply the smooth transition regression model to insurance industry data for 1934–1993 to test for a regime shift. We find a rapid shift between two distinct regimes with different dynamics. When capacity is not restricted, we find no evidence of a cycle. The cycle is present in periods when capacity is restricted, immediately following World War II and after 1968. The underwriting cycle appears to be a recent phenomenon.     

Comparing European and North American international migration

International migration is a vast, complex, and heterogeneous field of study. It requires not only knowledge about dynamic processes in the past and at present and in various regions of the world, but also interdisciplinary cooperation, not least in order to achieve a good theoretical development. Theories about international migration tend to be built on particular periods or regions. The test of these theories comes through comparative research. A comparison of North American and European immigration and immigration policy could examine 1) whether immigration is permanent or temporary, 2) the desire of Europeans for short-term immigration to allow the integration of the large numbers of immigrants from the recent past, 3) the differential development of welfare states, 4) the likely long-term outcome of large waves of immigration, and 5) the legal status of aliens.     

Dual citizenship and political integration

On the premise that representative government cannot properly function without the political participation of a large active segment of its constituents represented by permanent immigrants without citizenship, this article 1) reviews some attempts to resolve such an anomalous situation; 2) suggests naturalization as an instrument to correct it and describes the naturalization rate and the reasons for the low propensity for naturalization in various North European countries; 3) surveys the phenomenon of dual citizenship, the reasons for its increase as well as its increase as well as its inconveniences and advantages; and 4) hypothesizes that future increases in dual citizenship will protect political integration. Labor immigration will probably not be encouraged again, as it was some 20 years ago, but large international migration will take place both within Europe and to Europe from other continents. There are many indications that in the future many more Europeans will possess dual or multiple nationality, and this, in combination with more weight on a person's effective residence, will promote political integration of those large groups of immigrants and their descendants, who now stand outside the political systems without proper representation.     

Perceived tax evasion and the importance of trust

Using Swedish individual survey data, we analyze the perception of tax evasion in terms of ten different taxes. We find large variation across taxes, highlighting the importance of studying different taxes separately rather than treating tax evasion as one common phenomenon. We focus on the importance of trust in taxpayers and in politicians. Those who do not trust their fellow citizens are more likely to believe that they are evading taxes, but distrust in politicians has an even greater effect, especially for redistributive and fiscally motivated taxes. Hence, it is important for politicians to be perceived as trustworthy in order to be able to collect taxes for maintaining the welfare state.     

The biographical consequences of protest and activism: a systematic review and a new typology

Most research on activist participation has aimed to explain motives to engage in protest and collective action or becoming an activist. The outcomes, for the individual, have been neglected. Therefore, we set out to systematically document and organize the psychological and behavioural changes associated with activism into a typology of change. The review contains 57 papers describing changes. Psychological changes identified in the literature can be classified into 19 main forms: marital status, children, relationship ties, work-life/career, extended involvement, consumer behaviour, identity, empowerment, radicalization/politicization, legitimacy, sustained commitment, self-esteem, general well-being, ‘traits’, self-confidence, religion, organizing, knowledge and home skills. Our analysis highlights the lack of analysis of the relation between type of protest and type of change, and lack of research into the processes behind the various psychological changes. What is needed now is more precise investigation of the relationship between types of protests, social and psychological processes, and psychological outcomes. Further, more longitudinal studies are required to explore the relationship.     

The effects of smoking laws on seating allocations of restaurants, bars, and taverns

Supporters of smoking laws often argue that they do not harm restaurants, bars, and taverns and may even raise their profits. Opponents argue that owners cater to customer preferences regarding smoking and that laws mandating specific smoking policies will therefore negatively impact profits of some firms. This article tests hypotheses regarding how smoking laws affect seating allocations, using data from a nationwide survey of restaurant and bar owners. The empirical evidence indicates that smoking laws exert no significant effect on seating allocations. Firms are shown to allocate greater shares of seating to nonsmoking use when customers exhibit stronger preferences for such seating.     

自动往返电动小汽车的设计原理与制作方法

本文介绍了采用脉冲主动采集、计数程序控制、虚拟脉冲复位、撞击转向的方式完成自动往返电动小汽车的构思、设计及制作的方法。     

Use of a case study in sequencing/scheduling research

This paper describes a study of an industrial sequencing/scheduling problem. The study contains the definition of the problem, data requirements and examination of solution technique. Definition of the problem is discussed from the aspect of uniqueness of the specific system. Discussion of data requirements includes availability and accuracy, while examination of solution technique considers limitation of time, computer capacity, etc., as well as the possibility of imbedding available algorithms into the solution procedure. Conclusions are presented relative to the use of the case study approach in sequencing/scheduling research.