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排序方式: 共有112条查询结果,搜索用时 31 毫秒
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Fernando Martins 《LABOUR》2015,29(3):291-309
This paper exploits the information collected from a survey conducted on a sample of Portuguese firms to study the patterns of firms’ price and wage adjustments and the extent of nominal price and wage rigidities. The evidence shows that the frequency of price changes varies substantially across sectors and depends on the intensity of competition, the share of labor costs and firms’ price reviewing behavior. The results also suggest that the constraint imposed by the presence of downward nominal wage rigidity is less important in firms where the fraction of permanent and high‐skilled workers is lower and the share of flexible pay components is higher. 相似文献
3.
da Silva Lobo DS Vallada HP Knight J Martins SS Tavares H Gentil V Kennedy JL 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2007,23(4):421-433
Pathological gambling (PG) is an impulse control disorder that has been considered as a behavioral addiction. Recent studies have suggested the involvement of the dopaminergic system in addictions and impulse control disorders and associations of dopamine receptor genes (DRD1, DRD2, and DRD4) and PG have been reported. In the present study, 140 sib-pairs discordant for the diagnosis of PG (70 males and 70 females on each group) were recruited through the Gambling Outpatient Unit at the Institute of Psychiatry, University of Sao Paulo and were assessed by trained psychiatrists. A family-based association design was chosen to prevent population stratification. All subjects were genotyped for dopamine receptor genes (DRD1 -800 T/C, DRD2 TaqIA RFLP, DRD3 Ser9Gly, DRD4 48bp exon III VNTR, DRD5 (CA) repeat) and the dopamine transporter gene (SCL6A3 40 bp VNTR). Our results suggest the association of PG with DRD1 -800 T/C allele T (P = .03). 相似文献
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Edwin M. M. Ortega Fernanda B. Rizzato Clarice G. B. Demétrio 《Statistical Methods and Applications》2009,18(3):305-331
In a sample of censored survival times, the presence of an immune proportion of individuals who are not subject to death,
failure or relapse, may be indicated by a relatively high number of individuals with large censored survival times. In this
paper the generalized log-gamma model is modified for the possibility that long-term survivors may be present in the data.
The model attempts to separately estimate the effects of covariates on the surviving fraction, that is, the proportion of
the population for which the event never occurs. The logistic function is used for the regression model of the surviving fraction.
Inference for the model parameters is considered via maximum likelihood. Some influence methods, such as the local influence
and total local influence of an individual are derived, analyzed and discussed. Finally, a data set from the medical area
is analyzed under the log-gamma generalized mixture model. A residual analysis is performed in order to select an appropriate
model.
The authors would like to thank the editor and referees for their helpful comments. This work was supported by CNPq, Brazil. 相似文献
6.
Fernanda WANDERLEY 《International labour review / International Labour Office》2009,148(3):253-267
With the coming to power in 2006 of Evo Morales' Movement Toward Socialism, Bolivia entered a new stage in its history: a period of ambitious political and economic reform aiming to transcend the neo‐liberal development model in place since 1985 and to renew the State on the basis of its new Constitution, drawn up in 2008. Against this background, this article examines changes in labour law and social protection during the 1980s and 1990s and takes stock of the challenges of implementing a development strategy focusing on full employment and equity. 相似文献
7.
Patrícia Layne Alves Klebber Teodomiro Martins Formiga Marco Antônio Borges Traldi 《Urban Ecosystems》2018,21(4):697-706
Afforestation is inserted in the urban environment and interferes directly in the surface runoff. In order to quantify the rainfall interception by tree species, an experiment was carried out in the city of Uruaçu, Goiás, Brazil, with the four most common tree species in the urban afforestation of the region. The species chosen were the Mangifera indica (mango tree), the Caesalpinia peltophoroides (sibipiruna tree), the Pachira aquatica (munguba tree) and the Licania tomentosa (oiti). In order to register precipitation, ten pluviographs were used. They are capable of measuring precipitation over time in terms of duration, volume, and intensity. For events with a mean cumulative precipitation of 16.7 mm, the mean values of interception found in each species were: Mangifera indica - 8.0 mm; Pachira aquatica - 7.4 mm; Licania tomentosa - 7.2 mm; and Caesalpinia peltophoroides - 4.8 mm. The research confirms the importance of studies related to the identification of the species’ individual characteristics that interfere in the rainfall interception capacity and that can consequently contribute to urban drainage actions. In addition, it proves the existence of variations of rainfall interception in relation to rainfall events and during their occurrences and emphasizes the need for a careful definition of the species that will compose the urban afforestation. 相似文献
8.
This paper empirically examines the impact of competition in the television (TV) industry on the number of movie theaters, their attendance, and their box office revenues. Studies of firm entry usually focus on the impact of regulation on economic outcomes within an industry, thereby neglecting its impact on neighboring industries. Using changes in regulation in the Spanish local TV station industry, we estimate the impact of TV entry on the movie theater industry between 1993 and 2005. Our findings show that local TV entry decreased the number of theaters and screens in a province, as well as movie attendance and box office revenues. (JEL L11, L43, L82) 相似文献
9.
Rodrigo Blaya Leonardo Dalla Giacomassa Rocha Thomaz Fernanda Guilhermano Artur de Oliveira Paludo Luiza Rhoden Graziele Halmenschlager 《The aging male》2016,19(2):85-89
Introduction: Metabolic syndrome (MetS) is a constellation of interrelated risk factors of metabolic origin. Some studies suggest a possible link between low total testosterone (TT) levels and the presence of MetS.Aim: To analyze the strength and independence of associations between TT and MetS components in non-diabetic men.Methods: In this cross-sectional study, 143 non-diabetic men older than 40 were analyzed.Main outcomes measure: Blood samples were collected to evaluate metabolic profile and TT levels. MetS was defined as the presence of three or more of the following characteristics: fasting blood glucose levels?≥?100?mg/dL, triglyceride?≥?150?mg/dL, HDL-c?40?mg/dL, hypertension or blood pressure?≥?130/85?mmHg, and waist girth?>?102?cm.Results: Mean age of the study population was 61.5?±?8.61 years old. MetS was present in 47.9% of the individuals. Thirty-four men had low TT and MetS was observed in 23 (70%) against 50 (46%) in those with normal TT (≥?300?ng/dL) (OR 4.94, p?0.01), adjusted to confounder’s factors. In multiple linear regression analysis, only waist circumference (Beta: ?0.395; p?=?0.03) and HDL-c (Beta: 0.19; p?=?0.04) remained significantly correlated with TT levels.Conclusions: Low TT levels were associated with MetS diagnosis. Abdominal obesity was the MetS component independently correlated to low TT levels. 相似文献
10.
Fernanda Mota Pereira 《Intercultural Education》2016,27(6):577-586
This article focuses on English language teaching in Brazilian public schools, based on experiences in primary and secondary education, as well as in Teaching Practicum courses at a university. Through these experiences, the article critiques the overemphasis on grammar and the lack of an intercultural approach. The author engages the reader with a theoretical discussion regarding the connection between language and culture and the possibilities for the implementation of intercultural principles. The article closes with some reflections on what intercultural language learning looks like in practice. 相似文献