82 research outputs found
The Essence of Human Resources Management
No full textThe current research aims at identifying the essence of human resource management, recognizing the management through examining the importance of management, whose target is to establish an ongoing cooperative social entity with an objective and purpose. Furthermore, it seeks to discover the principles of management and the significance of human resource in the institution, and to demonstrate the prominence of human resource study and the historical development of human resource management. The administration in its modern form is the result of a number of overlapping changes and developments dating back to the beginning of the industrial revolution. So, the study of the most important historical stages of the administration is beyond doubt very crucial, let alone the demonstration of the objectives of human resource management whether social, economic, ethical, organizational, functional, personal or global. It also looks into human resource management decisions, the most important of which were individual and collective decisions. In addition, I will clarify the functions and work of human resource management such as recruitment, training, wage determination, worker relationships, workforce planning and importance. I will conclude the research by emphasizing that people with modern trends see the organization as having many functions, like production, marketing, accounting, finance and others. Besides, human resource management is also a key function of the organization, just as other functions in the organization are. This is because of the importance of the part of the human resource through its role and the work and tasks it accomplishes in the organization. The major point of the research is that the management in its modern form is the upshot of many changes and developments and has taken several names from personnel management to employees’ management to human resource management
Coping with Corona Economic Crisis: The Islamic Economy and the Knowledge Economy
No full textThis research aims at identifying the economy and its strength in the face of natural disasters, showing how the economy of the countries of the world was affected by the corona pandemic, addressing the policies that have been applied to fade and restore its effects, displaying the efforts of financial institutions to confront it, and proposing direct and indirect solutions through the Islamic economy and the knowledge economy. The research will also show that the Corona crisis is not a pure evil or even a real economic deadly one, but rather the procedures, the wrong application of rules and the fragility of structures are the causes of the different crises. And, the research proposes to use the vital empowerment of technology and new economies such as sharing and behavioral economies and also to address them in study, action and application. Keywords: Pandemic, COVID-19; economic crises; Islamic economy; Islamic finance, sharing economy, stimulus packages. DOI: 10.7176/EJBM/14-6-03 Publication date:March 31st 202
A Code for the Preliminary Design of Cooled Supercritical CO2 Turbines and Application to the Allam Cycle
No full textThis paper documents a thermo-fluid-dynamic mean-line model for the preliminary design of multistage axial turbines with blade cooling applicable to supercritical CO2 turbines. Given the working fluid and coolant inlet thermodynamic conditions, blade geometry, number of stages and load criterion, the model computes the stage-by-stage design along with the cooling requirement and ultimately provides an estimate of turbine efficiency via a semi-empirical loss model. Different cooling modes are available and can be selected by the user (stand-alone or combination): convective cooling, film cooling, and thermal barrier coating. The model is applied to attain the preliminary aero-thermal design of the 600 MW cooled axial supercritical CO2 turbine of the Allam cycle. Results show that a load coefficient varying from 3 to 1 throughout the machine, and a reaction degree ranging from 0.1 to 0.5 lead to the maximum total-to-static turbine efficiency of about 85%. Consequently, as opposed to uncooled CO2 turbines, a repeated stage configuration is an unsuited design choice for cooled sCO2 machines. Moreover, the study highlights that film cooling is considerably less effective compared to conventional gas turbines, while increasing the number of stages from 5 to 6 and adopting higher rotational speeds leads to an increased efficiency
Catalytic aromatization and dealkylation of bicyclic hydrocarbons present in kerosene fractions
No full textApplied Science
SNG based energy storage systems with subsurface CO2 storage
No full textLarge-scale energy storage plants based on power-to-gas-to-power (PtG–GtP) technologies incorporating high temperature electrolysis, catalytic methanation for the provision of synthetic natural gas (SNG) and novel, highly efficient SNG-fired Allam reconversion cycles allow for a confined and circular use of CO2/CH4 and thus an emission-free storage of intermittent renewable energy. This study features a thorough technology assessment for large-scale PtG–GtP storage plants based on highly efficient sCO2 power cycles combined with subsurface CO2 storage. The Allam cycle employs supercritical CO2 as working fluid as well as an oxy-combustion process to reach high efficiencies of up to 66%. The entire PtG–GtP process chain assessed in this study is expected to reach maximum roundtrip efficiencies of 54.2% (with dedicated and sufficient O2 storage) or 49.0% (with a dedicated air separation unit). The implementation of said energy storage systems into existing national energy grids will pose a major challenge, since they will require far-reaching infrastructural changes to the respective systems, such as extensive installations of renewable generation and electrolysis capacities as well as sufficient subsurface storage capacities for both CO2 and CH4. Therefore, this study incorporates an assessment of the present subsurface storage potential for CO2 and CH4 in Germany. Furthermore, a basic forecast study for the German energy system with an assumed mass deployment of the proposed SNG-based PtG–GtP energy storage system for the year 2050 is conducted. In case of a fully circular use of CO2/CH4, when electricity is solely generated by renewable energy sources, 736 GW of renewables, 234 GW of electrolysis and 62 GW of gas-to-power capacities are required in the best case scenario in 2050. The total storage volume on the national scale of Germany for both CO2 and CH4 was determined to be 7.8 billion N m3, respectively, leading to a CH4 storage capacity of 54.5 TW h. The presented investigations illustrate the feasibility of large-scale energy storage systems for renewable electricity based on high temperature electrolysis, catalytic methanation and Allam power cycles paired with large subsurface storages for CO2 and CH4.Reservoir Engineerin
Dynamic Environmental Change at the Cusp of the Great Oxidation Event: The Gowganda-Lorrain Formation Transition, Cobalt Basin, Ontario and Quebec
No full textThe Huronian Supergroup, an early Paleoproterozoic (ca. 2.45-2.22 Ga) sedimentary succession preserved in Ontario and Quebec, catalogues evidence for the Great Oxidation Event (i.e., the initial rise of oxygen in the atmosphere) through the preservation of redox sensitive minerals in terrestrial deposits: (1) detrital pyrite and uraninite in older strata (evidence of an anoxic atmosphere), and (2) Earth’s earliest red, hematitic, sandstone in younger strata (indicative of a shift to an oxidizing atmosphere). This dissertation comprises three studies from the Cobalt Basin, a northern sub-basin of the greater Huron basin. The first two studies develop depositional models of the northern and easternmost portions of the Cobalt Basin providing details on the glacial to post-glacial paleoenvironments that preserve Earth’s earliest red sandstones. Stratigraphic measurements and correlations reveal that strata are preserved within paleovalleys, interpreted to have developed from glacial excavation as evidenced by basal subglacial deposits. Above these subglacial deposits, strata show a single progradational succession, which captures a transition from glaciomarine to warm and humid fluvial braidplain environments. At the flanks of the paleovalleys, alluvial and/or colluvial deposits occur indicating that terrestrial sedimentation was triggered by enhanced weathering in an unvegetated warm and humid setting due to topographic variations. The successions occur at proximal limits of a passive margin and indicate that progradation was influenced by relative sea-level fall linked to glacio-isostatic uplift. The third study investigates the petrogenesis of reddened sandstone of the aforementioned braidplain deposits. Petrography reveals single-grain rims of pigmentary hematite dust on detrital quartz that are encased by quartz overgrowth cement. This encapsulates evidence that reddening is a syn-sedimentary or early diagenetic feature, formed from widespread oxidizing meteoric waters in a terrestrial setting under an oxygenated atmosphere, prior to burial and lithification of the fluvial deposits. Reddening likely happened close to 2.31 Ga, providing an approximate age for the initiation of oxidative weathering in a terrestrial setting, triggering key feedbacks in nutrient cycling that possibly thrusted Earth’s atmosphere into a stable oxidizing state
Exploring different stroke populations’ information needs: a cross-sectional study in England
No full textBackground: While tailored information might have the potential to motivate stroke survivors to make essential lifestyle changes and improve long-term outcomes, how this varies among different stroke populations is not yet fully understood. Method: From November 2022 to May 2023, stroke survivors in the UK, who were clinically stable, participated in a community-based, descriptive cross-sectional study. Participants rated several information themes on a Likert scale from one to five, indicating the relevance of each information group to them. Data were analysed using Wilcoxon and chi-squared tests on SPSS. Descriptive statistics were employed for examining the preferred information delivery method, timing, personnel, and frequency. Results: Seventy survivors, with an average age of 67 ± 19 (61% males), were recruited. Survivors emphasised the importance of symptoms, risk factors, and recovery information during hospital stay, while medication and lifestyle change information were more significant in the community. Subgroup analysis revealed distinct patterns: First-time stroke survivors highlighted the importance of social and financial support (acute phase median Likert score 3, chronic phase median Likert score 4; p < 0.01), while those with prior strokes emphasised information on driving and working after stroke (acute phase median Likert score 4, chronic phase median Likert score 3; p < 0.05). Survivors recruited after six months of stroke prioritised knowledge of carer support in the community (acute phase median Likert score 3.5, chronic phase median Likert score 4; p < 0.01). Conclusion: Survivors’ information needs differ depending on factors such as the recovery phase, type of stroke, time since diagnosis, and the presence of a previous stroke. Considering these factors is essential when developing or providing information to stroke survivors.Acknowledgements: The corresponding author (Allam Harfoush) gratefully acknowledges the support and efforts of the Council for At-Risk Academics (Cara
اقبال اور حلاج کے مشترک فکری عناصر
No full textThe is a lot of similarities in thoughts of Allam Iqbal and Mansoor Hallaj, the renowned sufi of Islamic world. These similarities may be specially found regarding love and affection of the Holy Prophet Hazrat Muhammad (P.B.U.H) and Hazrat Abu Bakar Siddique(R.A).l Some other topics like concept of Iblees and Khudi are also similarly discussed by bath the great scholars. In this article these similarities have been analysed by the author
How do the top 40 business schools in the UK understand, teach and implement KM in their teaching?
No full text
Purpose
The emergence of “knowledge economies” brings along new lenses to organizational management and behaviour. One of the key concepts at the heart of this new wave is knowledge management (KM). The purpose of this paper is to scrutinize how KM is taught and discussed within the context of business schools around the UK.
Design/methodology/approach
The general research question is: how do top 40 business schools in the UK understand, teach and implement KM in their teaching? To answer this question, the author reviewed the curriculums of leading schools and contacted all schools to collect more information and data.
Findings
The study reveals that KM has yet to carve a self-standing place for itself within taught programmes in UK business schools.
Research limitations/implications
The study’s methodological design can explore the relevance of KM as a term, but it can only provide limited perspective into how this complex and multidimensional concept is operationalized in business schools’ curriculums. Moreover, the capacity of business schools to frame KM holistically is beyond the scope of this research.
Practical implications
Framing KM discourse within the relevant academic literature, this paper outlines that, while KM is being scrutinized as a research topic, interest in KM has yet to be translated into a widespread integration of KM as a taught skill within business schools.
Originality/value
The study is considered as one of the first attempts to investigate how KM is understood, taught and implemented in teaching and curriculum design within the UK business schools.
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