The main concern of this paper is to study the dynamic of a predator–prey system with diffusion. It incorporates the Holling-type-II and a modified Leslie–Gower functional responses under Robin boundary conditions. More concretely, we study the dissipativeness of the system by using the comparison principle, and we derive a criteria for permanence and for predator extinction.

The excessive and unsustainable exploitation of our marine resources has led to the promotion of marine reserves as a fisheries management tool. Marine reserves, areas in which fishing is restricted or prohibited, can offer opportunities for the recovery of exploited stock and fishery enhancement. This study examines the impact of the creation of marine protected areas, from both economic and biological perspectives. The consequences of reserve establishment on the long-run equilibrium fish biomass and fishery catch levels are evaluated. We include (...) reserve size as control variable to maximize catch at equilibrium. A continuous time model is used to simulate the effects of reserve size on fishing catch. Fish movements between the sites is assumed to take place at a faster time scale than the variation of the stock and the change of the fleet size. We take advantage of these two time scales to derive a reduced model governing the dynamics of the total fish stock and the fishing effort. Simulation results suggest that the establishment of a protected marine reserve will always lead to an increase in total fish biomass, an optimal size of a marine reserve can achieve to maximize the catch at equilibrium. (shrink)

Increase or decrease in subsequent action following a low-cost act of support for a cause can be predicted from both commitment theory and the slacktivism effect. In this paper, we report on three studies that tested type of motivation as a moderator of the effect of an initial act of support [wearing a badge and writing a slogan ] has on support for blood donation. Small-scale meta-analysis performed on data from the three studies shows that activating prosocial motivation generally leads (...) to greater support for the cause after an initial act of support compared to the control condition, while the effect from impression-management motivation can either be negative or null. (shrink)

Cities’ constructed environments position urban areas at the center of importance. The concept of “urban place” has mainly evolved into a marketable and branded good as a result of the advent of numerous design-led place-making policies and practices. In this effort of place-making, aesthetics play a significant role. Despite apparent conceptual ambiguities and conflicts, the interpretation of “commodified aesthetics of place” stresses specific phenomenological and qualitative place-attributes, such as authenticity. To provide clarity on this complex issue, a reexamination of core (...) place-concepts is necessary. This article offers an understanding of urban settings and the accompanying aesthetic elements from another perspective. Such a strategy highlights the clear distinction between an object-based and a contextual interpretation of place, as well as offering a framework for reexamining the aesthetics of place and its vital role in forming the lived world. Moreover, I correlate the relation between individuals’ existential phenomena in relation to the city’s place-making theory. (shrink)

Sexual and reproductive health is a challenge worldwide, and much progress is needed to reach the relevant UN Sustainable Development Goals. This paper presents cross-sectional data collected in Sierra Leone on sexual and gender-based violence, family planning, child, early and forced marriage, and female genital mutilation using an innovative method of measurement: situational judgment tests, as a subset of questions within a larger survey tool. For the SJTs, respondents saw hypothetical scenarios on these themes and had to indicate how they (...) would react. The objective is to give an impression of beliefs and norms on specific behaviors, which provide insights for social and behavior change interventions. Data was collected by enumerators traveling to villages randomly selected in six districts of the country. The sample is composed of 566 respondents. Results show that FGM in particular seem to be a priority topic, in comparison to the other topics for which the norms seem to be stronger against those practices. Age differences emerged and suggest priority groups to be targeted. In terms of validity of the measurement methods, situational judgment test answers correlated positively with other items in the survey, but the magnitude of the association is often small, and sometimes not significant. Thus, more studies are needed to further explore the validity of this measure by comparing against a reference value. Using SJTs could complement other data collection tools to perform community assessment, and orient the direction of the program in its planning phase. (shrink)

Outcomes of interspecific competition, and especially the possibility of coexistence, have been extensively studied in theoretical ecology because of their implications in community assemblages. During the last decades, the influence of different time scales through the local/regional dynamics of animal communities has received an increasing attention. Nevertheless, different time scales involved in interspecific competition can result form other processes than spatial dynamics. Here, we envision and analyze a new theoretical framework that couples a game theory approach for competition with a (...) demographic model. We take advantage of these two time scales to derive a reduced model governing the total densities of the two populations and we study how these two time scales interfere and influence outcomes of species competition. We find that a competition process occurring on a faster time scale than demography yields a “priority effect” where the first species introduced outcompetes the other one. We then confirm previous findings stipulating that species coexistence is favored by large difference in time scales because the extinction/recolonization process. Our results then highlight that an integration of demographic and competition time scales at both local and regional levels is mandatory to explain communities assemblages and should become a research priority. (shrink)

We present a dynamical model of a multi-site fishery. The fish stock is located on a discrete set of fish habitats where it is catched by the fishing fleet. We assume that fishes remain on fishing habitats while the fishing vessels can move at a fast time scale to visit the different fishing sites. We use the existence of two time scales to reduce the dimension of the model : we build an aggregated model considering the habitat fish densities and (...) the total fishing effort. We explore a regulation procedure, which imposes an average residence time in patches. Several equilibria exist, a Fishery Free Equilibria as well as a Sustainable Fishery Equilibria . We show that the dynamics depends on a threshold which is similar to a basic reproduction ratio for the fishery. When the basic reproduction ratio is less or equal to 1, one of the FFEs is globally asymptotically stable , otherwise one of the SFEs is GAS. (shrink)

Autism spectrum disorder (ASD) is characterized by atypical perception, including processing that is biased toward local details rather than global configurations. This bias may impact on memory. The present study examined the effect of this perception on both implicit (Experiment 1) and explicit (Experiment 2) memory in conditions that promote either local or global processing. The first experiment consisted of an object identification priming task using two distinct encoding conditions: one favoring local processing (Local condition) and the other favoring global (...) processing (Global condition) of drawings. The second experiment focused on episodic (explicit) memory with two different cartoon recognition tasks that favored either local (i.e., processing specific details) or a global processing (i.e., processing each cartoon as a whole). In addition, all the participants underwent a general clinical cognitive assessment aimed at documenting their cognitive profile and enabling correlational analyses with experimental memory tasks. Seventeen participants with ASD and 17 typically developing (TD) controls aged from 10 to 16 years participated to the first experiment and 13 ASD matched with 13 TD participants were included for the second experiment. Experiment 1 confirmed the preservation of priming effects in ASD but, unlike the Comparison group, the ASD group did not increase his performance as controls after a globally oriented processing. Experiment 2 revealed that local processing led to difficulties in discriminating lures from targets in a recognition task when both lures and targets shared common details. The correlation analysis revealed that these difficulties were associated with processing speed and inhibition. These preliminary results suggest that natural perceptual processes oriented toward local information in ASD may impact upon their implicit memory by preventing globally oriented processing in time-limited conditions and induce confusion between explicit memories that share common details. (shrink)

In the postcolonial world, and particularly after September 11, a liberal Western norm updates human rights with « sexual democracy » . Intertwined with the norm of antiracism, this « sexual democracy » functions as a formidable trap to those postcolonial subjects who have the misfortune to overstep it : accused of complicity with racism, they are called barbarians and pushed into the background. Zacarias Moussaoui was well aware of this, and played on it; French girls from the North (...) African immigration are equally well aware, and they negotiate from day to day. (shrink)

The physician charter on medical professionalism creates standards of ethical behaviour for physicians and has been endorsed by professional organisations worldwide. It is based on the cardinal principles of the primacy of patient welfare, patient autonomy, and social welfare. There has been little discussion in the bioethics community of the doctrine of the charter and none from a Jewish ethical perspective. In this essay the authors discuss the obligations of the charter from a Jewish ethical viewpoint and call on other (...) cultures to develop their own unique perspectives on this important document. (shrink)

Moral education through service learning at post-secondary level is an important but under-researched field. Most existing studies center on its learning outcomes like academic progress, personal development, communication, and leadership skills, with only a few evaluating the moral development of college students participating in service-learning projects. The lack of study on moral development in service learning indicates a need for clarification of the theoretical underpinnings of service learning, John Dewey's ideas on moral growth, in particular his model of moral imagination (...) and the implications thereof, for current service-learning research and practice. We argue that Dewey's work here can help strengthen .. (shrink)

For centuries, philosophers and theologians debated how to reconcile the existence of an all-powerful, all-loving, and ever-present God with the problem of evil. However, the question of why the righteous suffer remains unanswered. Given the omnipresence of God, one wonders why the sufferers experience what seems like God’s absence in their adversity. This study presents a theodicy of narrative analytic theology because the experiences of the saints of old compel us to rethink our approach to the problem of evil from (...) the ‘God’s-eye view’ to the experiential and existential worries of the sufferer. The study looks at the story of Job and Daniel and his friends in Babylon. The narrative theodicy approach helps us understand why the righteous never denounced God in the Old Testament. The New Testament, in line with the Old Testament, reveals a suffering motif of the saints, which includes participation in the atoning work of Christ and the purification of the souls of the sufferer. Nevertheless, it seems some evils are pointless. The sufferers do not see their suffering as a punishment or a weakness from God but as a distraction and a test to perfect their covenantal relationship with the Triune. Ultimately, the suffering of the righteous will be overcome at the eschaton. (shrink)

v. 1. Edinyĭ i︠a︡zyk chelovechestva. --.