scholarly journals Strong gender differences in reproductive success variance, and the times to the most recent common ancestors

2012 ◽  
Vol 310 ◽  
pp. 43-54 ◽  
Author(s):  
Maroussia Favre ◽  
Didier Sornette
Author(s):  
Alice Violet Nyamundundu

The purpose of this chapter was to investigate and describe why women in Malawi and Africa at large are underrepresented in IT despite the widespread availability of IT through cell phones, institutions, and general computer hardware and software. Gender discriminates women in education and world of work. The gender issue is all rooted, promoted, and strengthened in cultural beliefs. Literature reveals that for their part, African women have internalized the so-called inferiority position through their culture and society. Critiques of these beliefs commonly agree that there is need for mental rewiring on gender equity roles. Women need to believe in themselves and shun the positional gender differences that are causing severe imbalances in education and workplaces across Africa. The findings led to the overarching conclusion that African culture is not really changing with the times and it pushes women on the edge. One recommendation will be arrived at; there is need to include to a larger scale gender equity and justice system in education and workplaces across Africa.


Author(s):  
Alessia Bocchi ◽  
Massimiliano Palmiero ◽  
Laura Piccardi

AbstractGender differences are often reported in spatial abilities, most of the times favouring men. Even during wayfinding, which requires planning and decision-making, such as choosing roads to take or shortcuts, men are in general better and faster than women. Although different interpretations have been proposed to explain men’s advantage in navigation, no study has explored the possibility that it could be due to men’s better travel planning ability. This latter has been recently identified as a distinct kind of planning that allows implementing an efficient navigational strategy in accordance with the environmental features. Therefore, the present study was aimed at investigating gender differences in travel planning ability. We compared men and women in performing the Key Search Task that requires to implement a strategy to search for a lost object in a wide imagined space. Results showed that men outperform women in both the overall performance and in some specific indexes of the total score. Men had a better travel planning ability with respect to women, outperforming women in configuring the planned strategy and choosing the best point to enter the imagined field. Therefore, men seem to plan the best navigational strategy and appear more cognitively flexible than women in adapting the strategy at the environmental features. The two genders did not differ in the time spent to solve the task. This finding suggests that differences in travel planning skills can contribute in explaining gender differences in wayfinding and spatial orientation.


Sex Roles ◽  
1987 ◽  
Vol 16 (1-2) ◽  
pp. 1-7 ◽  
Author(s):  
Arnold Arluke ◽  
Lanny Kutakoff ◽  
Jack Levin
Keyword(s):  

Author(s):  
Alice Violet Nyamundundu

The purpose of this paper was to investigate and describe why women in Malawi and Africa at large are underrepresented in IT despite the wide spread availability of IT either through cell phones, institutions and general computer hardware and software. Gender discriminates women in education and world of work. The gender issue is all rooted, promoted and strengthened in cultural beliefs. Literature reveals that for their part, African women have internalized the so called inferiority position through their culture and society. Critiques of these beliefs commonly agree that there is need for mental rewiring on gender equity roles. Women need to believe in themselves and shun the positional gender differences which are causing severe imbalances in education and workplaces across Africa. The findings led to the overarching conclusion that African culture is not really changing with the times and it pushes women on the edge. One recommendation will be arrived at, there is need to include to a larger scale gender equity and justice system in education and workplaces across Africa.


1998 ◽  
Vol 28 (2) ◽  
pp. 276-283 ◽  
Author(s):  
D Lindgren ◽  
T J Mullin

Status number is a measure of effective population size that is based on current relatedness only. Formulae are developed for group coancestry (=average coancestry) and status number for seed orchard crops. The formulae consider (1) differences in reproductive success among orchard genotypes, (2) relatedness between pairs of orchard genotypes, (3) inbreeding of orchard genotypes, (4) influence of pollen contamination (considering its relatedness both to itself and to the genotypes in the orchard), and (5) gender differences and sexual asymmetries of orchard genotypes. Properties of status number and other measures of effective number are discussed. They may refer to rate or state, to the reference population or the development of an idealized population, and to different moments in the sexual cycle.


1979 ◽  
Vol 46 ◽  
pp. 385
Author(s):  
M.B.K. Sarma ◽  
K.D. Abhankar

AbstractThe Algol-type eclipsing binary WX Eridani was observed on 21 nights on the 48-inch telescope of the Japal-Rangapur Observatory during 1973-75 in B and V colours. An improved period of P = 0.82327038 days was obtained from the analysis of the times of five primary minima. An absorption feature between phase angles 50-80, 100-130, 230-260 and 280-310 was present in the light curves. The analysis of the light curves indicated the eclipses to be grazing with primary to be transit and secondary, an occultation. Elements derived from the solution of the light curve using Russel-Merrill method are given. From comparison of the fractional radii with Roche lobes, it is concluded that none of the components have filled their respective lobes but the primary star seems to be evolving. The spectral type of the primary component was estimated to be F3 and is found to be pulsating with two periods equal to one-fifth and one-sixth of the orbital period.


2006 ◽  
Vol 5 (1) ◽  
pp. 30-31
Author(s):  
C ZUGCK ◽  
A FLUEGEL ◽  
L FRANKENSTEIN ◽  
M NELLES ◽  
M HAASS ◽  
...  

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