151 research outputs found
Interpretive structural modelling: Hierarchical relationship model of appreciating diversity competency for educational leaders
The dynamics of diversity and cultural competency are elements that run parallel with globalization. Appreciating diversity is part of global leadership competency. However, this assumption may not hold in a context in which multiculturalism diversity and competency are not an integral element for leadership competency for public sector educational leaders. Public organization should assimilate and practice appreciating diversity in the organizational leadership competency. Thus, the central aim of this study is to investigate and examine the appreciating diversity competency for educational leaders. The paper analyzed the appreciating competencies by using interpretive structural modelling (ISM) based on experts’ consensus. The cross-impact matrix multiplication applied to classification (MICMAC) analysis ascertained and classified each competency based on their driving and dependent power. The hierarchical model developed through ISM yielded seven appreciating competencies divided into two dimensions for educational leaders. The model proposed could be adopted by stakeholders to upgrade the competency of educational leaders to practice and apply appreciating diversity. The ISM model could be adopted for the training and development of future educational leaders in preparation to administer and lead multicultural and multigenerational organizational communities
Discharge and flow coefficient analysis in internal combustion engine using computational fluid dynamics simulation
Intake system is one of the crucial sub-systems in engine which can inflict significant effect on the air-fuel mixing, combustion, fuel consumption, as well as exhaust gases formation. There are many parameters that will influence engine performances. Good engine breathing is required to get better air flow rate to the engine. One of the methods includes the improvement of intake system by modifying the intake port design. This paper presents the application of Computational Fluid Dynamics analysis on two engines with different intake port shapes. Dimensionless parameters like discharge coefficient and flow coefficient are used to quantify the changes in intake flow at different valve lifts variation. Results show that when valve lift increases, this inflicted the increase in discharge coefficient because of greater mass flow rate of induction air. Both flow and discharge coefficient is dependent on valve lift. Flow analysis proved the relationship by computing the increase of flow coefficient as valve opening increase. The computed analysis shows that different intake port shapes does bring significant effect on discharge coefficient and flow coefficient
The clinical significance of immunoglobulin A deficiency
IgA deficiency is the most common primary immunoglobulin deficiency. The prevalence in Caucasians is around one in 500, whereas in some Asian populations it is very uncommon. Most individuals with IgA deficiency are clinically asymptomatic. Those with symptoms of immunodeficiency have predominantly sinopulmonary or gastrointestinal infections, which are more severe when associated with IgG2, IgG4 or specific antibody deficiency. IgA deficiency is believed to be one end of a spectrum of immunodeficiency with common variable immunodeficiency at the most severe end. Although primary IgA deficiency is the most commonly encountered form, secondary deficiencies due to drugs or viral infections are recognized. IgA deficiencies can be partial or transient. Primary IgA deficiency is caused by a defect of terminal lymphocyte differentiation, which leads to underproduction of serum and mucosal IgA; affected individuals have normal IgA genes. A number of non-immunoglobulin genes have been implicated in IgA deficiency. There have been many diseases reported in association with IgA deficiency, particularly autoimmune diseases. The most common association is with coeliac disease (CD), which has special significance since CD is usually diagnosed by detection of specific IgA antibodies that are obviously lacking in IgA deficiency. There is no specific treatment for patients with symptomatic IgA deficiency. Antibiotics are prescribed in those with acute infections. A significant proportion of IgA-deficient individuals are reported to have anti-IgA antibodies in their serum. Although blood or blood products given to IgA-deficient individuals can lead to severe, even fatal, transfusion reactions, such reactions are rare
INNOVATIVE WORKFLOW FOR SEISMIC ACQUISITION DESIGN
Any new survey geometry design must be based on thorough integrated analysis and modeling of project goals and objectives, exploration and/or field development targets’ requirements, available technologies, operational
constraints, terrain conditions and project budgets. A critical matrix for a good quality seismic acquisition geometry design is dense and uniform distribution of seismic traces in areal extent and within CDP, bins with sufficiently high
trace density, high fold, wide azimuth, long inline/crossline/maximum offsets and small largest minimum offset. That said, operational considerations could be a hindrance for such quality as in heavily congested fields, extensive network
of wells, platforms, production facilities and terrain obstacles leading to gaps in coverage and severe irregularities of fold, offset and azimuth distributions. This work demonstrates the essential value of using all available data and information about the project area. Such as well logs, RMS and interval velocities, legacy 2D and 3D seismic acquisition and processing reports, satellite and positioning maps, scouting reports, multi-physics maps and data and near surface environmental reports are all relevant. Thus, detailed, accurate and realistic estimates of the design’s
attributes are generated including desired temporal and spatial resolution, focused target illumination parameters, signal penetration, recording requirements and noise minimization processes
A training monitoring system for cyclist based on wireless sensor networks
This paper presents a training monitoring system for cyclist that is based on the technology of wireless sensor networks (WSNs). A stable and reliable wireless cyclist monitoring system is vital to establish a smart and efficient sports management program. A training monitoring system has been developed and tested in a real cyclist training environment in a velodrome. The system is designed is such a way that the packet loss rate is minimum. Using TelG mote as the basis, customized sensor nodes that function as a forwarder node and the relay nodes are developed to form the WSN. This WSN is linked to the cloud network on the Internet. The cloud network is then established and end users application for data accessing is designed. Several experiments have been conducted in a real scenario in a velodrome to measure the reliability of the system architecture. It is shown from the experiments that the proposed system is reliable even when the cyclist is moving at a high speed. The packet loss is less than 2% which does not give a huge impact to the data transmission
Batch study on COD and ammonia nitrogen removal using granular activated carbon and cockle shells
Landfills generate leachate that contains elevated concentration of contaminants and is hazardous to human health and the ecosystem. In this study, the mixture of granular activated carbon and cockle shells was investigated for remediation of COD and ammonia from stabilized landfill leachate. All adsorbent media were sieved to a particle size between 2.00 and 3.35 mm. The optimum mixing ratio, shaking speed, shaking time, pH, and dosage were determined. Characterization results show that the leachate had a high concentration of COD (1763 mg/L), ammonia nitrogen (573 mg/L), and BOD5/COD ratio (0.09). The optimum mixing ratio of granular activated carbon and cockle shells was 20:20, shaking speed 150 rpm, pH level 6, shaking time 120 min, and dosage 32 g. The adsorption isotherm analysis reveals that the Langmuir isotherm yielded the best fit to experimental data as compared with the Freundlich isotherm. The media produce encouraging results and can be used as a good and economical adsorbent
Tobacco teens: cigarette smoking among adolescents at a rural settlement, Jempol
Introduction: Smoking has become among the important current public health issues in Malaysia, as about one in four adult Malaysians currently smoke, and about one in ten adolescents smoke. The aim of this study was to assess the prevalence of cigarette smoking among adolescents and its associated factors in a rural community of Jempol, Malaysia.
Methodology: A cross-sectional study was conducted in 2013, involving rural settlements in Jempol, a district in the state of Negeri Sembilan, 147km south of Kuala Lumpur. Two rural settlements were randomly selected. The sampling unit was an adolescent (aged between 10- 19 years) who fulfilled the inclusion criteria. The instrument used in this study was a self- administered questionnaire adapted from the National Youth Tobacco Survey (NYTS) 2011. Questions on religiosity were included.
Results: A total of 167 respondents participated in this study. Among them, 31.1% (n=52) were identified as smokers; while 68.9% (n=115) were non-smokers. Mean age of smoking initiation was 14 years old. Being male, being employed, having large number of smokers in the family and among friends, having home smoking policy, being offered cigarettes, academic achievement, religiosity and perception of smoking being normal, cool and relaxing are factors significantly associated with smoking habits among adolescents (P=.05). Most preferred location to smoke was friend‘s house (44.2%) compared to own home (28.8%). Premises most visited to purchase cigarettes was the grocery store (59.9%), and majority of the adolescent smokers buy their own cigarettes (57.7%).
Conclusion: Suitable anti-smoking programs should be tailored to and focus on factors most significantly associated with smoking in this age group. Enforcement efforts should be focused on grocery stores to prevent the sale of cigarettes to minors. Future studies need to be carried out to detect a trend of the age of initiation, where or not it is becoming younger
Perception of Subject Matter Experts (SMEs) on various curation and preservation techniques for the development of natural history gallery in Malaysia: a qualitative study
Preserving animal’s body or part of the animals have become an important and wellknown
conservation medium to ensure that the future generations are still able to enjoy the
biodiversity and all the incredible species that live within it. This paper aims to present a
qualitative study on perception and preference of subject matter experts (SMEs) on various
curation and preservation methods that is suitable for certain animals for the development of
Natural History Gallery. Interview with the SMEs were done by using semi-structured
questionnaire and prior to this, permission were gained from the respondents by signing the
Informed Consent Form (ICF). The findings suggest that the preservation methods of specimens
ultimately depend on the purpose of specimens collected, either to be preserved as research
specimens or exhibition specimens. The information gained form this study will be valuable as
directive for the development of natural history gallery in Malaysia
Stem and leaf anatomical studies of selected species of barlerieae and ruellieae (acanthaceae) from Yemen
The anatomy of stems and leaves of selected species of tribes Barlerieae and Ruellieae (Acanthaceae) was studied to assess the taxonomic significance of anatomical characteristics in the two tribes. The anatomical characters such as the outline of stems, midribs, petioles, margins, shape of epidermal cells, vascular bundles, stomata, anticlinal cells, cystoliths, aerenchyma cells, layer of wax, layer of hypodermis were observed and analysed. Type of trichomes observed on the leaf surface using Scanning Electron Microscopy and light microscope provides information of taxonomic significance to both tribes and the taxa within them. The trichomes vary from non-glandular (unicellular, bicellular, multicellular, and multiradiate) to capitate glandular. Abundance of long-stalked trichomes was recorded only in Neuracanthus aculeatus. Cystoliths of different size and position are present in epidermis, parenchyma and collenchyma in addition to oil cells in some genera. The placement of Neuracanthus among the recognized tribes of Acanthaceae is assessed using anatomical characters
Low diversity of fruit bats in the East Coast islands of Terengganu, Malaysia
Fruit bats are important pollinators for plants and play important ecological functions and services in the tropical rain forest. Fruit bats are considered more important for the ecological rehabilitation and health of the plant community on islands as other pollinators may not be able to fly across open sea and reach the island. This study was conducted to determine the diversity of fruit bats in three contrasting Terengganu offshore islands, namely, Pulau Perhentian, Pulau Bidong, and Pulau Redang. A total of 40 individuals of four species were captured using 10 mist nets during the 180 mist-net night sampling period from June 27, 2019 until February 29, 2020. Pulau Bidong had the highest number of bats captured (22), followed by Pulau Redang (18) and Pulau Perhentian (0). The most frequently captured species was Cynopterus brachyotis in both islands. No yield in Pulau Perhentian may be caused by tourism activity, seasonal movement following flowering and fruiting trees, or inadequate sampling effort in multiple sites. The data can be further used to determine factors in assessing threats and for future conservation by the management authorities
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