178 research outputs found
AN ADAPTIVE LOCALIZATION SYSTEM USING PARTICLE SWARM OPTIMIZATION IN A CIRCULAR DISTRIBUTION FORM
Tracking the user location in indoor environment becomes substantial issue in recent research High accuracy and fast convergence are very important issues for a good localization system. One of the techniques that are used in localization systems is particle swarm optimization (PSO). This technique is a stochastic optimization based on the movement and velocity of particles. In this paper, we introduce an algorithm using PSO for indoor localization system. The proposed algorithm uses PSO to generate several particles that have circular distribution around one access point (AP). The PSO generates particles where the distance from each particle to the AP is the same distance from the AP to the target. The particle which achieves correct distances (distances from each AP to target) is selected as the target. Four PSO variants, namely standard PSO (SPSO), linearly decreasing inertia weight PSO (LDIW PSO), self-organizing hierarchical PSO with time acceleration coefficients (HPSO-TVAC), and constriction factor PSO (CFPSO) are used to find the minimum distance error. The simulation results show the proposed method using HPSO-TVAC variant achieves very low distance error of 0.19 mete
The role of RNA-modifying proteins in renal cell carcinoma
Gene expression is one of the most critical cellular processes. It is controlled by complex mechanisms at the genomic, epigenomic, transcriptomic, and proteomic levels. Any aberration in these mechanisms can lead to dysregulated gene expression. One recently discovered process that controls gene expression includes chemical modifications of RNA molecules by RNA-modifying proteins, a field known as epitranscriptomics. Epitranscriptomics can regulate mRNA splicing, nuclear export, stabilization, translation, or induce degradation of target RNA molecules. Dysregulation in RNA-modifying proteins has been found to contribute to many pathological conditions, such as cancer, diabetes, obesity, cardiovascular diseases, and neurological diseases, among others. This article reviews the role of epitranscriptomics in the pathogenesis and progression of renal cell carcinoma. It summarizes the molecular function of RNA-modifying proteins in the pathogenesis of renal cell carcinoma
LEADERS’ BEHAVIOUR AND SITUATIONAL FACTORS ON THE ORGANIZATIONAL PERFORMANCE AT ABU DHABI NATIONAL OIL COMPANY (ADNOC)
In both public and private businesses, to capacity building and sustenance of competitive advantage, the necessity of effective leadership has remained critical. Yet, leadership effectiveness has continued to be a multi-dimensional construct, and not many efforts have been done to conceptualise models in this level. In view of the case of Abu Dhabi National Oil Company (ADNOC), to attain a more reliable model that is suitable for modern organisations, the major objective of the current study was to update and empirically support the traditional Contingency Model of Leadership Effectiveness. Leader characteristics and hierarchy structure are not suitable factors of leadership behaviour in the organisation. To validate the Contingency Model of Leadership Effectiveness through the assistance of data collected in the current study, a final effort was made. Data validates the traditional model of leadership to a large degree; this is particularly factual for task-oriented leadership behaviour as contrasting to relationship-oriented leadership behaviour. Future researchers should consider activity-based constructs for the measurement of variables to find more significant and validate critical relationships in the model. Furthermore, the ADNOC and other corporations are recommended in the region stretch equal attention to male and female employees and leaders. Where leader-subordinate relationships are critical for complete organisational accomplishment, females would predominantly endeavour in positions.JEL: L20; L22; L72 Article visualizations
CONSTRUCTING LEADERS’ BEHAVIOUR AND SITUATIONAL FACTORS TOWARD ORGANIZATIONAL PERFORMANCE AT ABU DHABI NATIONAL OIL COMPANY (ADNOC) IN THE UNITED ARAB EMIRATES (UAE)
The need for effective leadership has remained critical to capacity building and sustenance of competitive advantage in both public and private businesses. Nonetheless, leadership effectiveness has remained a multi-dimensional construct, and not many attempts have been made to conceptualise models in this area. Considering the case of Abu Dhabi National Oil Company (ADNOC), the principal aim of the present study was to update and empirically support the traditional Contingency Model of Leadership Effectiveness in order to achieve a more credible model useful to contemporary organisations. It was observed that leader characteristics and hierarchy structure are not good determinants of leadership behaviour in the organisation. A final attempt was made to validate the Contingency Model of Leadership Effectiveness with the help of data gathered in the present study. Data validates the traditional model of leadership to a large extent; this is especially true for task-oriented leadership behaviour as opposed to relationship-oriented leadership behaviour. It is recommended that future researchers consider activity-based constructs for the measurement of variables to obtain more significant and validate critical relationships in the model. It is also recommended that ADNOC and other corporations in the region give equal attention to male and female employees and leaders. Females would particularly strive in positions where leader-subordinate relationships are critical for overall organisational success. Article visualizations
LEADERS’ BEHAVIOUR AND SITUATIONAL FACTORS TOWARD ORGANIZATIONAL PERFORMANCE AT ABU DHABI NATIONAL OIL COMPANY (ADNOC)
To capacity building and sustenance of competitive advantage in both public and private businesses, the need for effective leadership has remained critical. However, leadership effectiveness has persisted a multi-dimensional construct, and not many efforts have been finished to conceptualise models in this extent. In view of the case of Abu Dhabi National Oil Company (ADNOC), the major objective of the current study was to update and empirically support the traditional Contingency Model of Leadership Effectiveness to attain a more reliable model that is suitable for modern organisations. It was detected that leader characteristics and hierarchy structure are not decent factors of leadership behaviour in the organisation. A final effort was made to validate the Contingency Model of Leadership Effectiveness through the assistance of data collected in the current study. Data validates the traditional model of leadership to a large degree; this is particularly factual for task-oriented leadership behaviour as contrasting to relationship-oriented leadership behaviour. It is suggested that future researchers consider activity-based constructs for the measurement of variables to find more significant and validate critical relationships in the model. It is also suggested that ADNOC and other corporations in the region stretch equal attention to male and female employees and leaders. Females would predominantly endeavour in positions where leader-subordinate relationships are critical for complete organisational accomplishment. Article visualizations
Dual plate fixation for combined mid-clavicle fracture and acromioclavicular joint injury: a case report
This case report presents a rare injury involving a combined mid-clavicle fracture and acromioclavicular (AC) joint injury. While conservative management is typically recommended for Rockwood's grade I and II AC joint injuries, surgical intervention is commonly advised for grade IV, V, and VI injuries. However, there is limited literature addressing the management of mid-clavicle fractures in conjunction with ipsilateral AC joint injuries
The Value of Family History in Diagnosing Primary Immunodeficiency Disorders
Eliciting proper family medical history is critical in decreasing morbidity and mortality in patients with primary immunodeficiency disorders (PIDs). Communities with a common practice of consanguinity have a high rate of PIDs. We are presenting 2 cases where digging deeply into the family medical history resulted in the diagnosis of Omenn syndrome, a possibly fatal entity if not managed in a reasonable period
Assessment of Calotropis natural dye extracts on the efficiency of dye-sensitized solar cells
ArticleThis work presents the construction and testing of solar cells sensitized with natural
dyes extracted from plants indigenous to the desert.
Calotropis
plants are self
-
sufficient as they
grow in very harsh environments, and yet are not consumed by humans or livestock due to their
irritating agents to the skin and eyes. The energy generators of these plants are the leaves, which
are crushed and processed
to produce the dye solution. Also, the
Calotropis
leaves are covered in
a white powder that is thought to aid in mitigating the heat by scattering incident radiation. This
powder material is examined and added to the dye as it proved advantageous for the o
verall cell
efficiency, which reached 0.214% compared with 0.108% for cells with no powder. The produced
cells are also compared with ones sensitized by spinach, another common natural sensitizer for
dye
-
sensitized solar cells, and the performance proved t
o be significantly better. The fact that
Calotropis
is a non
-
food plant is an added advantage to utilizing it as a dye source, along with its
intrinsic heat resistance that allows it to survive the harsh desert conditions all year round
Riding to the Rescue: A Comprehensive Review of Health and Safety Measures in Ambulance Cars
Paramedics are registered health professionals in numerous countries. Whilst ambulance services must prioritize their patients, they also require personnel to be healthy to perform at their utmost to provide optimal patient care. Ambulance transport is associated with predictable and likely preventable occupant hazards. Ambulance services provide care 24 hours a day, 7 days a week, and shift work is known to be a risk factor for poor health. Working unsociable hours has detrimental consequences on the health and well-being of healthcare workers and can ultimately result in compromised patient care. Ambulance service utilization rates are high, with paramedics working in unpredictable environments, and undertaking complex clinical and manual handling tasks whilst caring for critically unwell patients; thus, there are several reasons postulated for poor health in this professional group. These include injuries, serious infections, high rates of musculoskeletal diseases, stress, and mental health problems. This review article aims to identify the occupational risks in an ambulance service, assess their impact on the health of employees, and explore control measures that can be implemented to reduce the risks and improve the safety of healthcare workers and patients
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