1,891 research outputs found
Sustainable water management in Iraq (Kurdistan) as a challenge for governmental responsibility
During the last few decades, a critical scarcity of water has occurred in the Middle East due to climate change and the mismanagement of water resources. The situation is complicated by the absence of an effective legislative framework at the local level as well as by the incapability and disrepute of the local water authorities. Most Iraqi citizens depend on the surface waters of the Tigris and Euphrates rivers, which have their sources in upstream neighbouring countries. Water crises concerning the shared waters urgently require a solution at the international level. Unfortunately, Iraq has faced several wars in a row (1980-2003), which has prevented the country from establishing its institutions. The rapid increase in the population of the transboundary countries on the Tigris and Euphrates rivers, and the high demands on agriculture, are accelerating water exploitation. In this paper, the present state of water management in Iraq from the viewpoint of the legislative framework, water balance, and transboundary issues will be discussed, with special attention to Kurdistan. Many legislative documents have been established or amended by the Iraqi and Kurdistan parliaments since 2003. In 2015, the Kurdistan Government Ministry of Agriculture and Water Resources, in cooperation with the EU, issued a guide for environmental legislation related to all environmental components such as air, water, and soil. The recommendations on actions needed in the water management in Kurdistan will be presented; they are inspired by the Water Framework Directive (WFD) (2000/60/EC) implemented in EU member states.Web of Science1011art. no. 165
Redesigning the Schedule Time Slots for Qatar University to Cope with Local Specificities
This study is concerned with the redesign of the class meeting pattern at Qatar University. It examines the existing meeting pattern based on its operational efficiency, its alignment with the strategic plan of the University, and its perception by the students and the faculty members. The analysis reveals serious limitations and shows the need for a new pattern with a full non-teaching day and no one-hour lectures. A capacity analysis proves the feasibility of such a pattern. Taking into consideration the specifications of the Qatari society, it was judged that the non-teaching day be split in two-half days. The present research recognizes the distinction between scheduling and class meeting patterns and aims to address the under-researched theme of having the meeting pattern as a variable rather than just an input to scheduling
Strangeness production at finite temperature and baryon density in an effective relativistic mean field model
We study the strangeness production in hot and dense nuclear medium, by
requiring the conservation of the baryon density, electric charge fraction and
zero net strangeness. The hadronic equation of state is investigated by means
of an effective relativistic mean field model, with the inclusion of the full
octet of baryons and kaon mesons. Kaons are considered taking into account of
an effective chemical potential depending on the self-consistent interaction
between baryons. The obtained results are compared with a minimal coupling
scheme, calculated for different values of the anti-kaon optical potential and
with non-interacting kaon particles. In this context, we also consider the
possible onset of the kaon condensation for a wide range of temperatures and
baryon densities.Comment: 13 pages, 6 figure
Controversial debates about workforce nationalisation: Perspectives from the Qatari higher education industry
Workforce nationalisation in the Gulf Corporation Council (GCC) countries is a crucial challenge for their development plans. The current study explores controversial debates about workforce nationalisation to understand the existing threats from the views of less examined key stakeholders, namely, educators and senior students. The study argues that the identified obstacles relate not only to policy flaws but also to the education – employability gap, phantom employment, and detrimental social and community perceptions. Given its exploratory nature, the study adopts a qualitative approach and uses 28 semi-structured interviews to identify critical obstacles to effective workforce nationalisation from human development, legal development, and socio-cultural perspectives. The findings contribute to the literature on GCC workforce nationalisation by unpacking educators’ and senior students’ views
Analysis of Nonsequential Double Ionization Using Virtual Detector Theory with Path Summation
We apply the virtual detector method, which is based on non-destructive
numerical quantum detections and the propagation of Bohmian-like classical
particles, to study in an ab initio way the nonsequential ionization dynamics
of a model two-electron atom with helium character. Single- and
double-ionization events are characterized and displayed using detector signals
measured at different points in the two-electron two-dimensional
position-space. The double photoelectron momentum distribution is calculated
via coherent path-summation over virtual particle trajectories. Insights into
different ionization and electron recollision pathways are gained from detailed
virtual particle tracking and energy-time readouts. This study demonstrates a
new extension of our application of virtual detector theory to strong-field
multi-electron quantum dynamics.Comment: 6 pages, 6 figures, 1 tabl
Development of Gulf Cooperation Council human resources: an evidence-based review of workforce nationalization
Purpose – This study aimed to contribute to the field of Human Resource Management (HRM) by providing a critical review of existing scholarly research and a thematic analysis of the workforce nationalization domain in the Gulf Cooperation Council (GCC) countries. To strengthen the literature on this topic, it seeks to identify key
gaps and areas for further exploration. Design/methodology/approach – A two-step systematic research methodology (qualitative and quantitative) and a thematic analysis of empirical and theoretical studies were used in this study. The quantitative review was conducted using a predesigned coding framework.
Findings – The study identified and discussed four perspectives of workforce nationalization in the GCC
countries. These were (1) the conceptualization of workforce nationalization; (2) the role of institutional policies
in achieving it; (3) the practices and outcomes of nationalization efforts and (4) the impact of gender and women in the nationalization process.
Research limitations/implications – This study has several limitations, which the authors have addressed
by proposing several future research avenues. For example, the reviewed studies are skewed toward certain
countries (e.g. UAE and Saudi Arabia), which limits the generalizability of their findings.
Practical implications – A more comprehensive definition of nationalization, development of qualitative
and quantitative measures to enhance HRM practices and outcomes, and the identification of alternative
approaches to improve the employment of locals are emphasized as needs. Additionally, revised measures and
mechanisms to rectify negative perceptions about entitlement and the revision of policies to integrate females
in the national labor force are suggested.
Originality/value – Workforce nationalization initiatives in the GCC region offer a unique and rich research
phenomenon replete with managerial, organizational, economic and political dilemmas. The investigation of
this phenomenon would profoundly enlighten employers, policymakers and scholars.
Keywords GCC countries, Workforce nationalization, Localization, Human resource management
Paper type Literature revie
Improving Forage Productivity by Using Cytoplasmic Male Sterility of Pearl Millet
Fourteen forage millet hybrids were produced by crossing 7 male fertile lines to 2 different lines of dwarf cytoplasmic male sterile (cms) lines of forage millet (Pennisetum americanum). Hybrids were evaluated with their male parents at the Giza experimental station in summer 1994. The evaluations included fodder yield traits and chemical composition. The objectives of the study were: 1 - to assess hybrid vigor, and 2 - to select the superior hybrids to be used in commercial production in Egypt. Present results showed that the 14 F1 hybrids and their male parents varied significantly in green and dry yield and their components. The top productivity of green and dry yield were found for the F1 hybrids of (cms line Tift 23 DA X ICTP 8202), (cms line Tift 23 A1E1 X ICTP 8202), with no significant differences between them followed by (cms line Tift 23 A1E1 X ICMS 7703). These hybrids also gave the highest value for crude protein % and the lowest value of crude fiber %, results which suggest that local F1 hybrids can be used an a commercial scale in Egypt
Factors influencing public attitudes toward paid online newspaper subscriptions- a field study
Despite the implementation of new business models in several Western media organizations, most Arab newspapers have not yet explored these models, and little is known about public attitudes towards their willingness to pay for online news. The study sought to identify factors that encourage the public to pay. It was applied to a sample of 530 newspaper consumers in the UAE, Saudi Arabia, and Oman. The study concluded that there are unfavorable trends in the public regarding their interest in following up on the news and did not show willingness for paying for online news. Most of them prefer to pay for entertainment materials. The study found that demographic variables such as age and income were important indicators of the public’s willingness to pay. Most respondents were not yet exposed to the paywall and anticipated difficulty in implementing the culture of paying for online news in Arab societies. They also expected that many print newspapers will disappear in the near future, and the idea of paying for online news was not seen favorably
A piecewise-linear reduced-order model of squeeze-film damping for deformable structures including large displacement effects
This paper presents a reduced-order model for the Reynolds equation for
deformable structure and large displacements. It is based on the model
established in [11] which is piece-wise linearized using two different methods.
The advantages and drawbacks of each method are pointed out. The pull-in time
of a microswitch is determined and compared to experimental and other
simulation data.Comment: Submitted on behalf of EDA Publishing Association
(http://irevues.inist.fr/handle/2042/16838
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