Estimating Traffic Emissions Using Demographic and Socio-Economic Variables in 18 Chilean Urban Areas

A macro-scale methodology for vehicle emissions estimation is described. The methodology is based on both correlations between activity level and PM, CO, THC and NO _x vehicle emissions and relationships between demographic and socio-economic variables and transportation activity level. First, pollutant emissions were correlated with transportation activity, expressed as vehicle-km/year, using existing data collected from mobile sources emission inventories in nine urban cities of Chile. Second, demographic and socio-economic variables were pre-selected from those that could intuitively be correlated with vehicle activity level and considering the data availability. Using the individual R ² correlation coefficient as variable selection criterion, population, the number of vehicles, fuel consumption, gross domestic product, average family incomes and road kilometers were finally chosen. A different set of explicative variables was considered for different vehicle categories, based on the selection criterion above mentioned. Then, correlation functions between these variables and transport activity were obtained by non-linear Gauss–Newton least square method. This methodology was applied to eighteen provinces of the country obtaining total annual emission for mobile sources, divided into six main vehicles categories.     

Trajectories of Fertility and Household Composition in the Demographic Profile of the Czech Republic

The household composition matrix is a representation of the demographic structure of households, specific to age groups of household members and household heads. As such, the matrix reflects also the environmental conditions, housing in particular, that mould households' demographic structure. By specifically depicting the presence of children in households, household composition could be viewed as gauging fertility within the context of housing conditions. This stance is examined in an application to Czech census data for the year 1991, at the commencement of an intense process of socio-economic transformation that accompanied the collapse of communism across Eastern Europe. Within this process, housing had an inadvertent impact upon the structure of households in general, and upon fertility decline in particular. By using the standard matrix representation of household composition, correspondence between trajectories of age-specific fertility and household composition emerge throughout the Czech Republic. This correspondence illustrates the potential household composition analysis carries for fertility measurement and estimation in rapidly changing economic environments.     

Subjective Quality of Life of Young Europeans. Feeling Happy but who Knows why?

Latest developments in modern societies have altered living circumstances. Upcoming insecurities concerning employment and family relationships make life more and more incalculable. Especially young adults throughout the modern world are forced to rethink their life concepts and to desist from the lives of former generations. As difficulties to achieve a successful life increase, one could assume that the young are confronted with the impossibility of feeling happy and satisfied with their lives anymore. Yet, latest social surveys prove wrong. Although increasing unemployment, lower net income and single parenthood make life more difficult for the young, they still enjoy very high subjective quality of life in comparison to the older population. Throughout the paper I argue that it is not the objective conditions that make young adults (15–29 years old) feel overwhelmingly happy. Looking for other sources of explanation of high quality of life among people aged 29 or below, I argue for indicators of social embeddedness as being influential on their assessment of life. But again, the proportion of explained variance is smaller compared to older people. With the help of empirical data taken from the European Social Survey I highlight the differences in life circumstances between the young and the total population. Concerning occupation, habitation (kind of inhabited household) and financial situation, most of the young live under different situations compared to the adult world. But surprisingly, the rates of perceived high quality of life among the young do not vary to such a large extent as among the adults. I show that young adults, often damned to fail social demands because of their withdrawal from social life, are still the most happy in modern (more and more individualizing?) societies. But it gets more difficult to account for the reasons of their happiness.     

Relationships between nuptiality and fertility: a case study on the Spanish Province of Navarre, 1786-1991

In this article we analyse the influence of age at marriage and percentage of definitive celibacy on marital and total fertility over the past two hundred years in the Spanish province of Navarre. A considerable percentage of the fall in marital fertility in the first half of the twentieth century in rural Navarre was due to the postponement in women's age at marriage. On the other hand, Navarre offers many exceptions to the scenario often endorsed by researchers that sees marriage as the prime mechanism for regulating reproduction in traditional societies. While in the northern part of the province this mechanism did bring about the reduction of total fertility, in the southern part the fall was primarily a consequence of a fall in marital fertility.     

Understanding Mechanisms Underlying Peer Effects: Evidence From a Field Experiment on Financial Decisions

Using a high‐stakes field experiment conducted with a financial brokerage, we implement a novel design to separately identify two channels of social influence in financial decisions, both widely studied theoretically. When someone purchases an asset, his peers may also want to purchase it, both because they learn from his choice (“social learning”) and because his possession of the asset directly affects others' utility of owning the same asset (“social utility”). We randomize whether one member of a peer pair who chose to purchase an asset has that choice implemented, thus randomizing his ability to possess the asset. Then, we randomize whether the second member of the pair: (i) receives no information about the first member, or (ii) is informed of the first member's desire to purchase the asset and the result of the randomization that determined possession. This allows us to estimate the effects of learning plus possession, and learning alone, relative to a (no information) control group. We find that both social learning and social utility channels have statistically and economically significant effects on investment decisions. Evidence from a follow‐up survey reveals that social learning effects are greatest when the first (second) investor is financially sophisticated (financially unsophisticated); investors report updating their beliefs about asset quality after learning about their peer's revealed preference; and, they report motivations consistent with “keeping up with the Joneses” when learning about their peer's possession of the asset. These results can help shed light on the mechanisms underlying herding behavior in financial markets and peer effects in consumption and investment decisions.     

On the Diaconis-Gangolli Markov chain for sampling contingency tables with cell-bounded entries

The problems of uniformly sampling and approximately counting contingency tables have been widely studied, but efficient solutions are only known in special cases. One appealing approach is the Diaconis and Gangolli Markov chain which updates the entries of a random 2×2 submatrix. This chain is known to be rapidly mixing for cell-bounded tables only when the cell bounds are all 1 and the row and column sums are regular. We demonstrate that the chain can require exponential time to mix in the cell-bounded case, even if we restrict to instances for which the state space is connected. Moreover, we show the chain can be slowly mixing even if we restrict to natural classes of problem instances, including regular instances with cell bounds of either 0 or 1 everywhere, and dense instances where at least a linear number of cells in each row or column have non-zero cell-bounds.     

Clinical Gender Differences Among Adult Pathological Gamblers Seeking Treatment

This study aimed to examine the gender-related differences in demographics, gambling measures, psychological functioning, and motivation for therapy in an outpatient sample of pathological gamblers seeking treatment. Participants in this multisite study included 103 adult outpatients (51 women and 52 men) meeting current DSM-IV-TR criteria for PG. Logistic regression was used to examine if gender was related together to categorical and continuous independent variables. Female gamblers were older than men and more likely to be divorced or widowed and to have a lower annual income. Women became more dependent on bingo and men on slot machines. Gambling motivation and the course of illness for both sexes were also different. Female gamblers were more anxious and with a poorer self-esteem than male gamblers and more affected by depressive symptoms; in turn, men were more impulsive and higher sensation seekers than women and more affected by drug/alcohol abuse. The 68.6% of female gamblers reported being victims of intimate partner violence. There were no gender differences about the motivation for treatment. Future research should examine gambling behaviors and psychological functioning and suggest treatment approaches to address specific goals according to these gender-related differences.     

"I was a dark horse in the eyes of her family": the relationship of cohabiting female couples and their families in Hungary

This article focuses on the relationship of female couples with their parents, siblings, and other relatives by exploring various patterns of coming out and family attitudes. After reviewing existing literature in this field, the article explores the extent to which my interviewees are out to their family, the reasons for and the possible complications about staying in the closet. Next the parents' reactions are discussed, which range from complete rejection through not admitting the truth to themselves to acceptance. Parents find it difficult to come out about their daughter to their immediate environment, as they fear prejudice and being blamed for her sexual orientation. This can also lead to conflict and alienation between parents and daughter. Accepting a person's sexual orientation and relationship, however, is only the first step toward her full integration into the family. Full inclusion in the family is only present when the person's same-sex partner is treated as kin to the same extent as an opposite-sex partner would be. This is demonstrated in a variety of ways, such as the names used (especially by the couple's children) and the system of obligations and favors constituting a formative element of kinship. There might be conflicts, however, when the two partners have different backgrounds and thus different expectations of family relations.