Notes biologiques sur les Centetinae

Petter J-J, Petter-Rousseaux A. Notes biologiques sur les Centetinae . In: La Terre et La Vie, Revue d'Histoire naturelle, tome 17, n°1, 1963. pp. 66-80

Observations Eco éthologiques sur les lémuriens malgaches du genre hapalémur

Au cours de deux missions récentes à Madagascar, une étude du genre Hapalémur a pu être entreprise sur le terrain. Elle a été complétée par l’observation d’animaux captifs à Madagascar et au Laboratoire d’Ecologie du Museum National d’Histoire Natu relle à Brunoy. Deux formes ont été reconnues, dont la répartition géogra phique, l’habitat et l’alimentation dans la nature diffèrent mais dont la locomotion, les postures, le rythme d’activité, la vie sociale, les moyens d’intercommunications, la reproduction et le compor tement en face des prédateurs semblent assez comparables. Des élevages en captivité d 'Hapalémur griseus ont pu montrer les possibilités d’adaptation de ces animaux et ont permis de les comparer à Lemur macaco, d’étudier leurs moyens d’intercommu nication et d’observer leur reproduction. Cette étude permet de mieux différencier les Hapalémur des autres Lémuriens malgaches. Ils en diffèrent principalement par les caractères du milieu qu’ils fréquentent, leur réaction de fuite, leurs postures, leur locomotion, leur régime, leur vie sociale, leurs moyens d’intercommunication et leur reproduction. Ces carac tères permettent probablement une meilleure défense contre les prédateurs

Impact of User Satisfaction with Mandated RM Use on Employee Service Quality

An increasing number of organizations are now implementing customer relationship management (CRM) systems to support front-line employees’ service tasks. With the belief that CRM can enhance employees’ service quality, management often mandates employees to use the implemented CRM. However, challenges emerge if/when employees are dissatisfied with using the system. To understand the role of front-line employee users’ satisfaction with their mandated use of CRM in determining their service quality, we conducted a field study in one of the largest telecommunications service organizations in China and gathered time-lagged data from self-reported employee surveys, as well as from the firm’s archival data sources. Our results suggest that employees’ overall user satisfaction (UserSat) with their mandated use of CRM has a positive impact on employee service quality (ESQ) above and beyond the expected positive impacts that job dedication (JD) and embodied service knowledge (ESK) have on ESQ. Interestingly, the positive effect of UserSat on ESQ is comparable to the positive effects of JD and ESK, respectively, on ESQ. Importantly, UserSat and ESK have a substitutive effect on ESQ, suggesting that the impact of UserSat on ESQ is stronger/weaker for employees with lower/higher levels of ESK. Finally, ESQ predicts customer satisfaction with customer service employees (CSWCSE); ESQ also fully mediates the impacts of UserSat and ESK, and partially mediates the impact of JD, on CSWCSE. The results of this study emphasize the importance of user satisfaction in determining employees’ task outcomes when use of an information system is mandated

Giant Shapiro steps for two-dimensional Josephson-junction arrays with time-dependent Ginzburg-Landau dynamics

Two-dimensional Josephson junction arrays at zero temperature are investigated numerically within the resistively shunted junction (RSJ) model and the time-dependent Ginzburg-Landau (TDGL) model with global conservation of current implemented through the fluctuating twist boundary condition (FTBC). Fractional giant Shapiro steps are found for {\em both} the RSJ and TDGL cases. This implies that the local current conservation, on which the RSJ model is based, can be relaxed to the TDGL dynamics with only global current conservation, without changing the sequence of Shapiro steps. However, when the maximum widths of the steps are compared for the two models some qualitative differences are found at higher frequencies. The critical current is also calculated and comparisons with earlier results are made. It is found that the FTBC is a more adequate boundary condition than the conventional uniform current injection method because it minimizes the influence of the boundary.Comment: 6 pages including 4 figures in two columns, final versio

Vortex dynamics for two-dimensional XY models

Two-dimensional XY models with resistively shunted junction (RSJ) dynamics and time dependent Ginzburg-Landau (TDGL) dynamics are simulated and it is verified that the vortex response is well described by the Minnhagen phenomenology for both types of dynamics. Evidence is presented supporting that the dynamical critical exponent $z$ in the low-temperature phase is given by the scaling prediction (expressed in terms of the Coulomb gas temperature $T^{CG}$ and the vortex renormalization given by the dielectric constant $\tilde\epsilon$) $z=1/\tilde{\epsilon}T^{CG}-2\geq 2$ both for RSJ and TDGL and that the nonlinear IV exponent a is given by a=z+1 in the low-temperature phase. The results are discussed and compared with the results of other recent papers and the importance of the boundary conditions is emphasized.Comment: 21 pages including 15 figures, final versio

Modern temporal network theory: A colloquium

The power of any kind of network approach lies in the ability to simplify a complex system so that one can better understand its function as a whole. Sometimes it is beneficial, however, to include more information than in a simple graph of only nodes and links. Adding information about times of interactions can make predictions and mechanistic understanding more accurate. The drawback, however, is that there are not so many methods available, partly because temporal networks is a relatively young field, partly because it more difficult to develop such methods compared to for static networks. In this colloquium, we review the methods to analyze and model temporal networks and processes taking place on them, focusing mainly on the last three years. This includes the spreading of infectious disease, opinions, rumors, in social networks; information packets in computer networks; various types of signaling in biology, and more. We also discuss future directions.Comment: Final accepted versio