The Risk of Water Erosion on the Foothills of the Middle High Atlas (Morocco): Tagueleft Basin Case Study : خطر التعرية المائية على السفوح بالأطلس الكبير الأوسط (المغرب): دراسة حالة حوض تاكلفت

Author(s):  
Rizki Mohamed

The Tagueleft basin is geographically located in the northern edges of the Middle High Atlas, which is a geomorphological fragile area. The impact of human activity has accelerated water erosion in this mountains area. This is reflected in dynamic and unstable foothills, a decrease in forests density and degradation in the production of the land. On the other hand, land degradation due to human overexploitation of natural resources has increased land degradation in the area. The interest in the risk of erosion on the foothills in the area under study comes in the context of our contribution to clarify the role of geomatical and geomorphological approaches in explaining and identifying the mechanisms responsible for current foothills dynamism through water erosion and its negative impacts on the environment and local development. The aim of the study was to use the EPM (Erosion Potential Méthod) which is formulated by Slobodan Gavrilovic for erosion in mountainous areas and to test the reliability of its results based on fieldwork and remote sensing data. The results of the erosion assessment and its quantification by applying the coefficient (W) for the theoretical model in the area under study have shown that erosion is very important and it touches on wide areas as it appears through the domain classification of the distribution erosion in Tagueleft basin.

2020 ◽  
Vol 1 (1) ◽  
pp. 06-09
Author(s):  
Aqsa Ayub

Soil erosion is the universal land degradation event which invites an enormous challenge for its rehabilitation. Among all forms, gully erosion is the most worst and visible form of water erosion which cannot be controlled without any permanent gully stabilization structure. Therefore, the study was conducted to evaluate the impact of gully plugging spillway to rehabilitate the eroded land. For this purpose, a highly eroded site was selected within the study area, surveyed to estimate the structural design and brick masonry work was executed accordingly. The consequences of study clearly illustrated that straight drop spillway is an effective hydraulic structure which considerably fulfilled its objectives by plugging the gully to stop further erosion as well as stabilizing the eroded land.


2020 ◽  
Vol 15 (2) ◽  
pp. 95-109
Author(s):  
Heba Aziz ◽  
Osman El-Said ◽  
Marike Bontenbal

The objective of this study was to measure the level of cruise tourists' satisfaction as well as the relationship between satisfaction, recommendation, return intention, and expenditure. Also, the impact of factors such as nationality, length of the visit, and age on the level of expenditure was measured. An empirical approach for data collection was followed and a total of 152 questionnaires were collected from cruise tourists visiting the capital city of Oman, Muscat, as cruise liners anchor at Sultan Qaboos Port. Results of the regression analysis supported the existence of a causal relationship between satisfaction with destination attributes, overall satisfaction, recommendation, return intention, and expenditure. It was found that the average expenditure varies according to age and length of the visit. Recommendations for policy makers were suggested on how to increase the role of cruise tourism in strengthening the economy.


2011 ◽  
Vol 2 (3/4) ◽  
pp. 227 ◽  
Author(s):  
Genecy Moraes Coelho Junior ◽  
Branca Terra ◽  
Elaine Cavalcate Peixoto Borin ◽  
Mariza Almeida

Author(s):  
Rade M. Ciric ◽  
Sasa N. Mandic

AbstractThe Republic of Serbia must make significant efforts to promote and exploit renewable energy sources and increase energy efficiency in all energy sectors to ensure energy security and economic competitiveness, reduce the negative impact on the environment from energy production and use, and contribute to global efforts to reduce greenhouse gases. Within the paper several issues of integration of recently realized CHP plant are introduced and discussed. Firstly, the legal and energy policy issues in the Republic of Serbia regarding connecting CHP to the grid are presented. The challenges and technical solutions for CHP connection to the grid, as well as power quality issues and the role of the CHP plant during the restoration of power supply during the maintenance of the substation and unplanned loss of high voltage supply, are presented and discussed. Finally, the impact of prospective massive integration of CHP on the energy balance and CO2 emission reduction in the province of Vojvodina in Serbia is investigated and discussed. Since it is the first CHP plant realized in Serbia, it is crucial that experience be shared to all potential stakeholders in the future energy efficiency projects.


Author(s):  
Oriol Ríos-González ◽  
Mimar Ramis-Salas ◽  
Juan Carlos Peña-Axt ◽  
Sandra Racionero-Plaza

Background: Men who develop behaviors connected with the model of hegemonic masculinity present several health problems. Previous research has shown the types of problems that men commonly suffer in this regard such as chronic diseases, dietary disorders, and traffic accidents. To combat and overcome this situation, several campaigns, policies and recommendations have been undertaken, and consequently, their influence has been analyzed. However, there have been few investigations into the role of men’s friendship in the reduction of these physical health problems. The findings presented in this article are focused on this issue, illustrating the impact of male friendship on the shaping of healthy behaviors. Methods: Drawing upon a qualitative-based methodology articulated in a case study of the Men in Dialogue association, located in Spain, the study has followed the premises of the communicative approach, a total of 15 structured online open-ended questionnaires have been performed and analyzed. The median age of the participants is 37.5 years. Results: The findings show how men involved in Men in Dialogue are promoting a kind of masculine friendship that is improving men’s emotional well-being and, consequently, their physical health.


2006 ◽  
Vol 24 (5) ◽  
pp. 327-345 ◽  
Author(s):  
Loïc Plé

PurposeThe purpose of this research is to explore the combining of marketing and organizational literature. This paper seeks to evaluate the relationships between multichannel coordination and customer participation, as seen through the lens of potential customer opportunism. It aims at showing the impact of this opportunism on the organizational design of multiple channels structures.Design/methodology/approachThe research reports on an exploratory case study in a French retail bank. A total of 25 in‐depth interviews were conducted, and the use of other sources enabled data triangulation.FindingsThe results show first that an increase in the number of distribution channels is liable to favor customer opportunistic behavior. To counter this, the bank mainly relies on impersonal coordination modes. An emerging result highlights the role of the customer as a “perceptual filter” between the different channels of employees.Research limitations/implicationsCustomer opportunism is studied via channels employees perceptions. An investigation using a customer survey may help to better understand this construct, e.g. to identify its antecedents, and to measure it precisely. Moreover, further qualitative and/or quantitative studies with larger sample sizes are needed to try and generalize these results.Practical implicationsIt is recommended not to forget that customers can facilitate or hinder multichannel coordination. Retail banks have the power to use them conveniently, provided that they are fully conscious of the scope of the “partial employee” role played by the customer.Originality/valueThis paper broadens understanding of how multichannel distribution structures are coordinated, and in a way belies traditional organizational design literature. The emerging result gives birth to the concept of “reversed interactive marketing”, which has interesting theoretical and practical repercussions.


Symmetry ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 890
Author(s):  
Paolo Di Giamberardino ◽  
Rita Caldarella ◽  
Daniela Iacoviello

This paper addresses the problem of describing the spread of COVID-19 by a mathematical model introducing all the possible control actions as prevention (informative campaign, use of masks, social distancing, vaccination) and medication. The model adopted is similar to SEIQR, with the infected patients split into groups of asymptomatic subjects and isolated ones. This distinction is particularly important in the current pandemic, due to the fundamental the role of asymptomatic subjects in the virus diffusion. The influence of the control actions is considered in analysing the model, from the calculus of the equilibrium points to the determination of the reproduction number. This choice is motivated by the fact that the available organised data have been collected since from the end of February 2020, and almost simultaneously containment measures, increasing in typology and effectiveness, have been applied. The characteristics of COVID-19, not fully understood yet, suggest an asymmetric diffusion among countries and among categories of subjects. Referring to the Italian situation, the containment measures, as applied by the population, have been identified, showing their relation with the government's decisions; this allows the study of possible scenarios, comparing the impact of different possible choices.


2021 ◽  
Author(s):  
Zhenyu Zhang ◽  
Patrick Laux ◽  
Joël Arnault ◽  
Jianhui Wei ◽  
Jussi Baade ◽  
...  

<p>Land degradation with its direct impact on vegetation, surface soil layers and land surface albedo, has great relevance with the climate system. Assessing the climatic and ecological effects induced by land degradation requires a precise understanding of the interaction between the land surface and atmosphere. In coupled land-atmosphere modeling, the low boundary conditions impact the thermal and hydraulic exchanges at the land surface, therefore regulates the overlying atmosphere by land-atmosphere feedback processes. However, those land-atmosphere interactions are not convincingly represented in coupled land-atmosphere modeling applications. It is partly due to an approximate representation of hydrological processes in land surface modeling. Another source of uncertainties relates to the generalization of soil physical properties in the modeling system. This study focuses on the role of the prescribed physical properties of soil in high-resolution land surface-atmosphere simulations over South Africa. The model used here is the hydrologically-enhanced Weather Research and Forecasting (WRF-Hydro) model. Four commonly used global soil datasets obtained from UN Food and Agriculture Organization (FAO) soil database, Harmonized World Soil Database (HWSD), Global Soil Dataset for Earth System Model (GSDE), and SoilGrids dataset, are incorporated within the WRF-Hydro experiments for investigating the impact of soil information on land-atmosphere interactions. The simulation results of near-surface temperature, skin temperature, and surface energy fluxes are presented and compared to observational-based reference dataset. It is found that simulated soil moisture is largely influenced by soil texture features, which affects its feedback to the atmosphere.</p>


Dementia ◽  
2017 ◽  
Vol 18 (7-8) ◽  
pp. 3161-3164 ◽  
Author(s):  
Rudi Coetzer

The paper explores the important role of relatives in designing assistive technologies in collaboration with practitioners. A brief case study reports the collaborative design of a 24-hour clock to reduce the impact of visual–spatial impairment on a family member's ability to read time and prevent temporal disorientation.


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