Search results for " Jacob"

Influence of brood temperature and hygrometry variations on the development of the honey bee ectoparasite Varroa jacobsoni (Mesostigmata : Varroidae)

1990

The influence of different temperatures (from 26 to 39.5°C) and relative humidities (40 and 70%) on the development of Varma jacobsoni (Oudemans) was studied by placing newly capped and parasitized worker bee broods into thermostatically controlled chambers. In one set of experiments the temperature was kept constant, and in the second set, the parasitized worker broods were placed at a temperature of 40,41, or 42°C for a time varying from 0 to 24 h and then returned to 32.5°C. The optimal temperature for development of the mites was between 32.5 and 33.4°C, which corresponds to the brood temperature of Apis mellifera L. Above 36.5°C, reproduction of varroa females was significantly reduced…

Anxiety symptoms among informal caregivers in 47 low- and middle-income countries: A cross-sectional analysis of community-based surveys.

2022

Background-\ud \ud There are no multi-country studies on the association between informal caregiving and anxiety from low- and middle-income countries (LMICs). Therefore, we investigated this relationship in a large predominantly nationally representative sample from 47 LMICs.\ud \ud Methods-\ud \ud Cross sectional data from the World Health Survey were analyzed. Anxiety symptoms referred to severe or extreme problems with worries or anxiety in the past 30 days.\ud \ud Information on caregiving in the past 12 months was obtained. Multivariable logistic regression analysis adjusting for age, sex, marital status, education, household size, employment, disability, and country was conducted. Da…

Chocolate Consumption and Indicators of Adiposity in US Adults.

2020

International audience; Purpose: The purpose of this research is to investigate the association between consumption of chocolate and measures of adiposity in a large, representative sample of US adults. Methods: Cross-sectional data from 13,626 nondiabetic adults (≥20 years) participating in the National Health and Nutrition Examination Survey study were aggregated using 5 study cycles from 2005-2006 through 2013-2014. Chocolate consumption was determined based on 2 24-hour dietary recalls. Body mass index (BMI) and waist circumference were objectively measured. We used multivariable linear regression to test associations of 1) any chocolate consumption (yes/no), and 2) the total amount of …

Jacobian of solutions to the conductivity equation in limited view

2022

Abstract The aim of hybrid inverse problems such as Acousto-Electric Tomography or Current Density Imaging is the reconstruction of the electrical conductivity in a domain that can only be accessed from its exterior. In the inversion procedure, the solutions to the conductivity equation play a central role. In particular, it is important that the Jacobian of the solutions is non-vanishing. In the present paper we address a two-dimensional limited view setting, where only a part of the boundary of the domain can be controlled by a non-zero Dirichlet condition, while on the remaining boundary there is a zero Dirichlet condition. For this setting, we propose sufficient conditions on the bounda…

Señor. El Real Convento de San Miguèl de los Reyes del Orden de San Geronimo ... dize: que aviendo sido servido vuestra Magestad de hazer merced al…

1717

Com a tít. el començament del text Precedeix al tít.: [Creu de Malta Text a 1 col. - Reclams Sign.: [ ]2

Bias the estimates of the returns ot education in the Mincerian earnings functions as a result of cohort effects

1986

Estimations de la rentabilité des études dans les fonctions de gains : problèmes de spécification, effets de génération

1986

Building up a multilateral strategy for the United States: Jacob Viner, Alvin Hansen and the Council on Foreign Relations (1939-1945)

2009

Voicing the Subaltern in African-American and Dalit Women's Autobiographies

2021

This paper aims to analyse two major autobiographies of Dalit women's literature and African American women's writing - Karukku (1992) by Bama Faustina and Incidents in the Life of a Slave Girl (1861) by Harriet A. Jacobs - to bring forth the similarities between these two groups of subaltern women. Through the means of autobiography, both writers transmit their own experiences and denounce the gender, race and caste oppression endured. The subaltern theory coined by Antonio Gramsci and developed by Gayatri Spivak will be used to analyse these texts and the way they establish a link between two different worlds as well as how they share the common objective of making their narrators' exclus…

A saturated strategy robustly ensures stability of the cooperative equilibrium for Prisoner's dilemma

2016

We study diffusion of cooperation in a two-population game in continuous time. At each instant, the game involves two random individuals, one from each population. The game has the structure of a Prisoner's dilemma where each player can choose either to cooperate (c) or to defect (d), and is reframed within the field of approachability in two-player repeated game with vector payoffs. We turn the game into a dynamical system, which is positive, and propose a saturated strategy that ensures local asymptotic stability of the equilibrium (c, c) for any possible choice of the payoff matrix. We show that there exists a rectangle, in the space of payoffs, which is positively invariant for the syst…