What price semiparametric Cox regression?

Lifetime Data Analysis - Cox’s proportional hazards regression model is the standard method for modelling censored life-time data with covariates. In its standard form, this method relies on...     

HOW MANY MORE CITES IS A $3,000 OPEN ACCESS FEE BUYING YOU? EMPIRICAL EVIDENCE FROM A NATURAL EXPERIMENT

We analyze the effect of open access (OA) status of journal articles on citations. Using cross‐sectional and panel data from mathematics and economics, we perform negative binomial, Poisson, and generalized method of moments/instrumental variable methods regressions. We benefit from a natural experiment via hybrid OA pilot agreements. Citations to pre‐prints allow us to identify the intrinsic quality of articles prior to journal publication. Overall, our analysis suggests that there is no hybrid OA citation benefit. However, for the subpopulation of articles without OA pre‐ or post‐prints, we find positive hybrid OA effects for the full sample and each discipline separately. (JEL L17, O33, A11)     

Specificity of back muscle response to submaximal fatiguing contractions

A fatigue-related decrease in quality and accuracy of the proprioceptive feedback from muscle spindles in the back (e.g. stretch reflexes) may lead to a deterioration of spinal stability, thereby making the spine more vulnerable to external perturbations. Endurance time, tissue oxygenation, reflex latency and blood pressure response were studied in twenty subjects during a submaximal endurance test of the back extensors (20 % MVC) performed as either a position task (supporting a weight stack while maintaining trunk position) or a force task (exerting a force against a dynamometer). Mean endurance time was 8.91 (± 2.79) min for the force task and 10.86 (± 6.93) min for the position task. This result is in striking contrast to what has previously been reported from limb muscles, and suggests that back muscles are especially well suited for postural tasks. An increased reflex latency found after the position task indicates that the disadvantage of the prolonged endurance time is a deterioration of the afferent input from the muscle spindles that may potentially hamper the protection of the spine.     

The biology of the voleClethrionomys rufocanus: A review

The biology of the gray-sided voleClethrionomys rufocanus in Hokkaido, concerning taxonomy, morphology, phylogeny, distribution, and natural history, is reviewed. Applied issues in forest management (damage, control and census) are also mentioned. AlthoughClethrionomys rufocanus of Hokkaido was originally identified as a distinct species,Evotomys (=nowClethrionomys) bedfordiae Thomas, 1905, current literature generally refers to the gray-sided vole of Hokkaido asClethrionomys rufocanus or asC. rufocanus bedfordiae (vernacular name, the Bedford’s red-backed vole). The gray-sided vole is the most common small mammal in Hokkaido. It inhabits open areas as well as forests, and mainly feeds on green plants. The gray-sided vole has a high reproductive potential; litter size: 4–7; gestation period: 18–19 days; maturation age: 30–60 days old. Although spring-born individuals usually attain sexual maturity in their summer/fall of birth, their maturation is sometimes suppressed under high densities. The breeding season is generally from April to October, but with some regional variation.Clethrionomys rufocanus has a rather specialized diet (folivorous), particularly during winter when it feeds on bamboo grass. Many predators specialize on the grey-sided vole in Hokkaido; even the red fox, which is a typical generalist predator, selectively feeds on this vole. Damage by voles’ eating bark used to be sever on forest plantations in Hokkaido. Censuses of small rodents have been carried out for management purpose since 1954.     

The consequences of own and spousal disability on labor market outcomes and subjective well-being: evidence from Germany

In this paper, I contrast the effects of individual and spousal disability on subjective well-being and labor supply using data on couples from the German Socio-Economic Panel for the years 1984–2006. I find almost no effects in terms of labor market outcomes for both men and women, which stands in stark contrast to the effects of individual disability. The life-satisfaction of women, but not of men, is reduced considerably by their partners’ disability. The effects are about 50–73 % as large as those of individual disability. I also find no evidence that individuals adapt to their partners’ disability, although there is adaptation to individual disability.     

How Dresses Can Make You Mentally Ill: Examining Gender Identity Disorder in Children

This paper examines the diagnostic category of Gender Identity Disorder in Children (GIDC) and its evolution. It also critiques the continued use of GIDC on conceptual, psychometric, and ethical grounds. Gender atypicality is a social construction that varies over time according to culture and social class and therefore should not be pathologized.     

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Ohne Zusammenfassung     

Mindful and Masculine: Freeing Women Leaders From the Constraints of Gender Roles

Despite gains in women's status, successful leaders are more likely to be men than women. The styles that successful leaders set tend to be masculine. Female leaders face a paradox: If they emulate a masculine leadership style, their male subordinates will dislike them. If they adopt a stereotypically warmand nurturing feminine style, they will be liked, but not respected. Two experiments found that female leaders who are mindful can escape this paradox. In an experiment, college-aged men perceived a woman who was masculine and mindful to be a better leader than a woman who was masculine and mindless. A second experiment replicated that result with middle-aged businessmen.     

Ein flexibler zweistufiger Graphen-Algorithmus zur Fließbandabstimmung mit praxisrelevanten Nebenbedingungen

In dieser Arbeit wird ein neues zweistufiges Verfahren zur Flie?bandabstimmung mit praxisrelevanten Nebenbedingungen (GALBP), wie parallelen Stationen, Stationssynergien, Verfahrensalternativen, Zuordnungsrestriktionen und u-f?rmiger Anordnung pr?sentiert. Im Gegensatz zu bekannten Verfahren l?sst sich das hier vorgestellte Vorgehen flexibel an unterschiedliche Nebenbedingungen anpassen. Es werden nicht nur einzelne der genannten Erweiterungen herausgegriffen; vielmehr k?nnen sie in beliebiger Zusammenstellung kombiniert werden.