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排序方式: 共有239条查询结果,搜索用时 31 毫秒
1.
Detection and correction of artificial shifts in climate series 总被引:6,自引:0,他引:6
Henri Caussinus Olivier Mestre 《Journal of the Royal Statistical Society. Series C, Applied statistics》2004,53(3):405-425
Summary. Many long instrumental climate records are available and might provide useful information in climate research. These series are usually affected by artificial shifts, due to changes in the conditions of measurement and various kinds of spurious data. A comparison with surrounding weather-stations by means of a suitable two-factor model allows us to check the reliability of the series. An adapted penalized log-likelihood procedure is used to detect an unknown number of breaks and outliers. An example concerning temperature series from France confirms that a systematic comparison of the series together is valuable and allows us to correct the data even when no reliable series can be taken as a reference. 相似文献
2.
Social Indicators Research - From the two-wave French Health and Professional Career survey in 2006 and 2010, the income distribution associated with income mobility between these two dates shows... 相似文献
3.
Social Indicators Research - Over the last two decades, European countries have struggled with several crises (e.g., the Great Recession, the refugee crisis) which had a tremendous impact on (some)... 相似文献
4.
Henri E. Cuny 《统计学通讯:模拟与计算》2016,45(5):1748-1762
Understanding how wood develops has become an important problematic of plant sciences. However, studying wood formation requires the acquisition of count data difficult to interpret. Here, the annual wood formation dynamics of a conifer tree species were modeled using generalized linear and additive models (GLM and GAM); GAM for location, scale, and shape (GAMLSS); a discrete semiparametric kernel regression for count data. The performance of models is evaluated using bootstrap methods. GLM was useful to describe the wood formation general pattern but had a lack of fitting, while GAM, GAMLSS, and kernel regression had a higher sensibility to short-term variations. 相似文献
5.
Although sexual assault prevention education tends to focus on consent promotion as a means to reduce rates of sexual assault, little is known about how college students consent to sexual activity. The current study aimed to better understand college students' consent via the systematic development of the Consent to Sex Scale (CSS), utilizing mixed methods via three phases and two waves of data collection. In Phase 1, qualitative data were collected from college students (n = 185) to provide a foundation for item writing. In Phase 2, closed-ended items were written for a quantitative instrument and reviewed by a team of experts. In Phase 3, a quantitative survey, including items written in Phase 2, was administered to college students (n = 685); the measure was assessed for its psychometric properties. Exploratory factor analysis was utilized, resulting in a five-factor solution. The CSS and corresponding factors demonstrated high internal consistency reliability and expected gender differences, supporting the construct validity of the measure. The CSS assesses college students' cues for indicating consent to sex, a construct not addressed by previous measures. The validated scale may be useful in future research to better understand how consent relates to other behaviors or constructs. 相似文献
6.
Henri ATANGANA ONDOA 《International labour review / International Labour Office》2019,158(3):561-576
This article analyses the effects of education on wage inequality in the informal sector in Cameroon. The author uses quantile regression on data from the Second survey on employment and the informal sector in Cameroon (EESI 2) of 2010. The results indicate that both wages and wage inequality increase with education in the informal sector, with tertiary education creating greatest inequality. These findings point to a number of policy recommendations for a transition to formality, such as the creation of more jobs for a skilled workforce, the development of sites adapted to informal sector activities and the creation of more vocational schools. 相似文献
7.
文章从两个方面阐述了生物的自组织亦即其复杂性的问题:一、生物后天行为的性状不是机械地由遗传基因决定的,而是由基因组与细胞内理化环境(包括被基因决定产生的蛋白质)之间的相互作用所形成的调节机制决定的;二、生物的自组织和复杂化是通过生物在充满随机作用的环境中自主地摸索自身行为可以遵循的概率性规律、从而减少自身结构中的冗余性以增加异质性而实现的。 相似文献
8.
Infant Sex Moderates the Effects of Maternal Pre‐ and Postnatal Stress on Executive Functioning at 8 Months of Age
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Saara Nolvi Henri Pesonen David J. Bridgett Riikka Korja Eeva‐Leena Kataja Hasse Karlsson Linnea Karlsson 《Infancy》2018,23(2):194-210
Previous studies report that early life stress, including maternal pre‐ and postnatal stress, has adverse effects on cognitive development and that these associations might be sex‐specific. However, no studies exist on early life stress and infant executive functioning (EF). The aim of this study was to examine the relationship between maternal pre‐ and postnatal stress and infant EF, and whether these associations are moderated by infant sex. Maternal prenatal depressive, general anxiety, and pregnancy‐specific anxiety symptoms were measured three times, and postnatal depressive and general anxiety symptoms were measured 6 months postpartum. Infant EF was assessed with a modified A‐not‐B task 8 months postpartum (N = 214). Maternal postnatal general anxiety predicted poorer EF in girls in comparison with boys. Moreover, there was a trend toward an interaction between prenatal anxiety and infant sex such that prenatal anxiety predicted infant EF differently in girls and in boys. No association was found between depressive symptoms or pregnancy‐specific anxiety symptoms and infant EF. These findings suggest that maternal anxiety may have sex‐specific effects on early EF and that pre‐ and postnatal stress may differently affect infant EF/cognitive development. The implications of these findings and important future directions are discussed. 相似文献
9.
10.
Pétremand Gaël Chittaro Yannick Braaker Sonja Brenneisen Stephan Gerner Magdalena Obrist Martin K. Rochefort Sophie Szallies Alexander Moretti Marco 《Urban Ecosystems》2018,21(1):119-132
Urban Ecosystems - Green roofs have recently gained recognition for their potential contribution to urban ecosystems by providing, among other services, habitat for plants and animals, and stepping... 相似文献