392 research outputs found
Human-Capital based Governance Structure, Success Factors and Barriers to Effective Governance: Co-operatives in Malaysia
Co-operatives comprise the crucial third engine of growth for the Malaysian economy after the public and private sectors. This study investigates the human capital based governance structure, success factors and barriers to effective governance of co-operatives in Malaysia. Questionnaires were distributed to the top 100 co-operatives listed in the Malaysian Co-operative Societies Commission website. Analysis of the responses to the questionnaires showed that human capital based co-operatives governance comprise members’ participation, independence of the board, depth of expertise and competencies of directors and other characteristics of the board. This study also identified branding as the most important success factor ahead of competitiveness and proximity. Malaysia’s economy is projected to continue relying significantly on the performance of co-operatives. Thus, it is incumbent for greater attention to be given towards an effective governance that results in successful co-operatives.© 2016. The Authors. Published for AMER ABRA by e-International Publishing House, Ltd., UK. Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies, Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.Keywords: Governance; branding; proximity; competitivenes
Teacher development multi-year studies: Impact of COVID-19 on teaching practices in Lao PDR, Timor-Leste and Vanuatu: A discussion paper for practitioners and policymakers
The COVID-19 pandemic caused significant disruptions to education systems around the world. Many governments responded abruptly, quickly closing schools and transitioning to home learning. This paper explores the impact of extended school closures due to COVID-19 on teaching and student learning in three countries – Lao People’s Democratic Republic (Laos), Timor-Leste and Vanuatu. This research extends the Australian Government’s Department of Foreign Affairs and Trade (DFAT)’s multi-year Teacher Development Studies, which are commissioned under the Evaluation Analytics Service (EAS). This study series involves the investigation of DFAT-funded teacher development initiatives in Laos, Timor-Leste and Vanuatu to understand the extent to which the investments have improved teaching quality and student learning. In 2021, regular data collection for the study was extended to include COVID-19 impact questions, thereby providing an opportunity to understand a wide range of education stakeholder perspectives on their experience of transitioning and implementing home learning, the impact on teaching practices and student learning, and the level of support teachers were provided during the pandemic
Evaluation of Australia\u27s Investment in Teacher Development in Lao PDR: Summary of the 2019 Baseline Report
In 2019, the Government of Lao People’s Democratic Republic (Lao PDR) introduced a new primary education curriculum to improve teaching quality and student learning outcomes. The Government’s Education and Sports Sector Development Plan 2021- 25 focuses on improving teacher knowledge and skills as a means to improve student learning outcomes. This report summarises baseline findings just prior to these significant curriculum changes. These changes are supported by the Australian Government through its Basic Education Quality and Access in Laos (BEQUAL) program. The Australian Government’s Department of Foreign Affairs and Trade (DFAT) has commissioned a study to investigate how BEQUAL is making a difference to the Government of Lao PDR’s ongoing primary education reforms. This study is part of a multi-year series undertaken by DFAT’s Education Analytics Service to investigate teacher and learning development initiatives in three countries: Lao PDR, Timor-Leste and Vanuatu. Key findings from this study include: the need for intensive action on Lao language literacy; targeted teacher training on the new curriculum, with a special emphasis on second language learners; and deepened engagement with school communities to reduce student absenteeism and improve student readiness for school
Insights from genetic studies of cerebral palsy
Cohort-based whole exome and whole genome sequencing and copy number variant (CNV) studies have identified genetic etiologies for a sizable proportion of patients with cerebral palsy (CP). These findings indicate that genetic mutations collectively comprise an important cause of CP. We review findings in CP genomics and propose criteria for CP-associated genes at the level of gene discovery, research study, and clinical application. We review the published literature and report 18 genes and 5 CNVs from genomics studies with strong evidence of for the pathophysiology of CP. CP-associated genes often disrupt early brain developmental programming or predispose individuals to known environmental risk factors. We discuss the overlap of CP-associated genes with other neurodevelopmental disorders and related movement disorders. We revisit diagnostic criteria for CP and discuss how identification of genetic etiologies does not preclude CP as an appropriate diagnosis. The identification of genetic etiologies improves our understanding of the neurobiology of CP, providing opportunities to study CP pathogenesis and develop mechanism-based interventions
Metastable Se6 as a ligand for Ag+: from isolated molecular to polymeric 1D and 2D structures
Attempts to prepare the hitherto unknown Se6 2+ cation by the reaction of elemental selenium and Ag[A] ([A]- = [Sb(OTeF5)6]-, [Al(OC(CF3)3)4]-) in SO2 led to the formation of [(OSO)Ag(Se6)Ag(OSO)][Sb(OTeF5)6]2 1 and [(OSO)2Ag(Se6)Ag(OSO)2][Al(OC(CF3)3)4]2 2a. 1 could only be prepared by using bromine as co-oxidant, however, bulk 2b (2a with loss of SO2) was accessible from Ag[Al(OC(CF3)3)4] and grey Se in SO2 (chem. analysis). The reactions of Ag[MF6] (M= As, Sb) and elemental selenium led to crystals of 1/∞{[Ag(Se6)]∞[Ag2(SbF6)3]∞} 3 and {1/∞[Ag(Se6)Ag]∞}[AsF6]2 4. Pure bulk 4 was best prepared by the reaction of Se4[AsF6]2, silver metal and elemental selenium. Attempts to prepare bulk 1 and 3 were unsuccessful. 1–4 were characterized by single-crystal X-ray structure determinations, 2b and 4 additionally by chemical analysis and 4 also by X-ray powder diffraction, FT-Raman and FT-IR pectroscopy. Application of the PRESTO III sequence allowed for the first time 109Ag MAS NMR investigations of 4 as well as AgF, AgF2, AgMF6 and {1/∞[Ag(I2)]∞}[MF6] (M= As, Sb). Compounds 1 and 2a/b, with the very large counter ions, contain isolated [Ag(Se6)Ag]2+ heterocubane units consisting of a Se6 molecule bicapped by two silver cations (local D3d sym). 3 and 4, with the smaller anions, contain close packed stacked arrays of Se6 rings with Ag+ residing in octahedral holes. Each Ag+ ion coordinates to three selenium atoms of each adjacent Se6 ring. 4 contains [Ag(Se6)+]∞ stacks additionally linked by Ag(2)+ into a two dimensional network. 3 features a remarkable 3-dimensional [Ag2(SbF6)3]- anion held together by strong Sb–F … Ag contacts between the component Ag+ and [SbF6]- ions. The hexagonal channels formed by the [Ag2(SbF6)3]- anions are filled by stacks of [Ag(Se6)+]∞ cations. Overall 1–4 are new members of the rare class of metal complexes of neutral main group elemental clusters, in which the main group element is positively polarized due to coordination to a metal ion. Notably, 1 to 4 include the commonly metastable Se6 molecule as a ligand. The structure, bonding and thermodynamics of 1 to 4 were investigated with the help of quantum chemical calculations (PBE0/TZVPP and (RI-)MP2/TZVPP, in part including COSMO solvation) and Born–Fajans–Haber-cycle calculations. From an analysis of all the available data it appears that the formation of the usually metastable Se6 molecule from grey selenium is thermodynamically driven by the coordination to the Ag+ ions
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Comparisons of host mitochondrial, nuclear and endosymbiont bacterial genes reveal cryptic fig wasp species and the effects of Wolbachia on host mtDNA evolution and diversity
Background
Figs and fig-pollinating wasp species usually display a highly specific one-to-one association. However, more and more studies have revealed that the "one-to-one" rule has been broken. Co-pollinators have been reported, but we do not yet know how they evolve. They may evolve from insect speciation induced or facilitated by Wolbachia which can manipulate host reproduction and induce reproductive isolation. In addition, Wolbachia can affect host mitochondrial DNA evolution, because of the linkage between Wolbachia and associated mitochondrial haplotypes, and thus confound host phylogeny based on mtDNA. Previous research has shown that fig wasps have the highest incidence of Wolbachia infection in all insect taxa, and Wolbachia may have great influence on fig wasp biology. Therefore, we look forward to understanding the influence of Wolbachia on mitochondrial DNA evolution and speciation in fig wasps.
Results
We surveyed 76 pollinator wasp specimens from nine Ficus microcarpa trees each growing at a different location in Hainan and Fujian Provinces, China. We found that all wasps were morphologically identified as Eupristina verticillata, but diverged into three clades with 4.22-5.28% mtDNA divergence and 2.29-20.72% nuclear gene divergence. We also found very strong concordance between E. verticillata clades and Wolbachia infection status, and the predicted effects of Wolbachia on both mtDNA diversity and evolution by decreasing mitochondrial haplotypes.
Conclusions
Our study reveals that the pollinating wasp E. verticillata on F. microcarpa has diverged into three cryptic species, and Wolbachia may have a role in this divergence. The results also indicate that Wolbachia strains infecting E. verticillata have likely resulted in selective sweeps on host mitochondrial DNA
Nitrogen and carbon source balance determined longevity, independently of fermentative or respiratory metabolism in the yeast Saccharomyces cerevisiae
Dietary regimens have proven to delay aging and age-associated diseases in several eukaryotic model organisms but the input of nutritional balance to longevity regulation is still poorly understood. Here, we present data on the role of single carbon and nitrogen sources and their interplay in yeast longevity. Data demonstrate that ammonium, a rich nitrogen source, decreases chronological life span (CLS) of the prototrophic Saccharomyces cerevisiae strain PYCC 4072 in a concentration-dependent manner and, accordingly, that CLS can be extended through ammonium restriction, even in conditions of initial glucose abundance. We further show that CLS extension depends on initial ammonium and glucose concentrations in the growth medium, as long as other nutrients are not limiting. Glutamine, another rich nitrogen source, induced CLS shortening similarly to ammonium, but this effect was not observed with the poor nitrogen source urea. Ammonium decreased yeast CLS independently of the metabolic process activated during aging, either respiration or fermentation, and induced replication stress inhibiting a proper cell cycle arrest in G0/G1 phase. The present results shade new light on the nutritional equilibrium as a key factor on cell longevity and may contribute for the definition of interventions to promote life span and healthy aging.The research leading to these results received funding from the Fundação para a Ciência e Tecnologia (FCT), cofunded by Programa Operacional Regional do Norte (ON.2—O Novo Norte); from the Quadro de Referência Estratégico Nacional (QREN) through the Fundo Europeu de Desenvolvimento Regional (FEDER) and from the Projeto Estratégico – LA 26 – 2013–2014 (PEst-C/SAU/LA0026/2013). Júlia Santos holds a PostDoc fellowship (SFRH/BPD/112108/2015) funded by FCT
Pseudomonas aeruginosa Bacteremia in Children Over Ten Consecutive Years: Analysis of Clinical Characteristics, Risk Factors of Multi-drug Resistance and Clinical Outcomes
This study aimed to evaluate the clinical profiles, antibiotic susceptibility, risk factors of multi-drug resistance (MDR) and outcomes of P. aeruginosa bacteremia in children by retrospective methods at a tertiary teaching children's hospital in Seoul, Korea during 2000-2009. A total of 62 episodes were evaluated and 59 patients (95.2%) had underlying diseases. Multivariate analysis demonstrated that an intensive care unit (ICU) stay within the previous one month was the only independent risk factor for MDR P. aeruginosa bacteremia (odds ratio [OR], 6.8; 95% confidence interval [CI], 1.3-35.8, P = 0.023). The overall fatality rate associated with P. aeruginosa bacteremia was 14.5% (9 of 62). The fatality rate in patients with MDR P. aeruginosa was 57.1%, compared with 9.1% in non-MDR patients (OR 13.3; 95% CI 2.3-77.2, P = 0.006). However, the presence of respiratory difficulty was the only independent risk factor for overall fatality associated with P. aeruginosa bacteremia according to multivariate analysis (OR 51.0; 95% CI 7.0-369.0, P < 0.001). A previous ICU stay and presentation with respiratory difficulty were associated with acquisition of MDR P. aeruginosa and a higher fatality rate, respectively. Future efforts should focus on the prevention and treatment of P. aeruginosa bacteremia in high-risk children
Six reference-quality genomes reveal evolution of bat adaptations
Bats possess extraordinary adaptations, including flight, echolocation, extreme longevity and unique immunity. High-quality genomes are crucial for understanding the molecular basis and evolution of these traits. Here we incorporated long-read sequencing and state-of-the-art scaffolding protocols to generate, to our knowledge, the first reference-quality genomes of six bat species (Rhinolophus ferrumequinum, Rousettus aegyptiacus, Phyllostomus discolor, Myotis myotis, Pipistrellus kuhlii and Molossus molossus). We integrated gene projections from our �Tool to infer Orthologs from Genome Alignments� (TOGA) software with de novo and homology gene predictions as well as short- and long-read transcriptomics to generate highly complete gene annotations. To resolve the phylogenetic position of bats within Laurasiatheria, we applied several phylogenetic methods to comprehensive sets of orthologous protein-coding and noncoding regions of the genome, and identified a basal origin for bats within Scrotifera. Our genome-wide screens revealed positive selection on hearing-related genes in the ancestral branch of bats, which is indicative of laryngeal echolocation being an ancestral trait in this clade. We found selection and loss of immunity-related genes (including pro-inflammatory NF-κB regulators) and expansions of anti-viral APOBEC3 genes, which highlights molecular mechanisms that may contribute to the exceptional immunity of bats. Genomic integrations of diverse viruses provide a genomic record of historical tolerance to viral infection in bats. Finally, we found and experimentally validated bat-specific variation in microRNAs, which may regulate bat-specific gene-expression programs. Our reference-quality bat genomes provide the resources required to uncover and validate the genomic basis of adaptations of bats, and stimulate new avenues of research that are directly relevant to human health and disease.s E.W.M. and M.P. were supported by the Max Planck Society and were
partially funded by the Federal Ministry of Education and Research (grant 01IS18026C). All
data produced in Dresden were funded directly by the Max Planck Society. S.C.V., P.D. and K.L.
were funded by a Max Planck Research Group awarded to S.C.V. from the Max Planck Society, and a Human Frontiers Science Program (HFSP) Research grant awarded to S.C.V.
(RGP0058/2016). M.H. was funded by the German Research Foundation (HI 1423/3-1) and the
Max Planck Society. E.C.T. was funded by a European Research Council Research Grant (ERC2012-StG311000), UCD Wellcome Institutional Strategic Support Fund, financed jointly by
University College Dublin and SFI-HRB-Wellcome Biomedical Research Partnership (ref
204844/Z/16/Z) and Irish Research Council Consolidator Laureate Award. G.M.H. was funded
by a UCD Ad Astra Fellowship. G.J. and E.C.T. were funded from the Royal Society/Royal Irish
Academy cost share programme. L.M.D. was supported by NSF-DEB 1442142 and 1838273, and
NSF-DGE 1633299. D.A.R. was supported by NSF-DEB 1838283. E.D.J. and O.F. were funded by
the Rockefeller University and the Howard Hughes Medical Institute. We thank Stony Brook
Research Computing and Cyberinfrastructure, and the Institute for Advanced Computational
Science at Stony Brook University for access to the high-performance SeaWulf computing
system (which was made possible by a National Science Foundation grant (no. 1531492)); the
Long Read Team of the DRESDEN-concept Genome Center, DFG NGS Competence Center,
part of the Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität
Dresden; S. Kuenzel and his team of the Max Planck Institute of Evolutionary Biology; members
of the Vertebrate Genomes Laboratory at The Rockefeller University for their support; L.
Wiegrebe, U. Firzlaff and M. Yartsev, who gave us access to captive colonies of Phyllostomus
and Rousettus bats and aided with tissue sample collection; and M. Springer, for completing
the SVDquartet analyses, and providing phylogenetic input and expertise
Joint maintenance-inventory optimisation of parallel production systems
We model a joint inspection and spare parts inventory policy for maintaining machines in a parallel system, where simultaneous downtime seriously impacts upon production performance and has a significant financial consequence. This dependency between system components means that analysis of realistic maintenance models is intractable. Therefore we use simulation and a numerical optimisation tool to study the cost-optimality of several policies. Inspection maintenance is modelled using the delay-time concept. Critical spare parts replenishment is considered using several variants of a periodic review policy. In particular, our results indicate that the cost-optimal policy is characterised by equal frequencies of inspection and replenishment, and delivery of spare parts that coincides with maintenance intervention. In general, our model provides a framework for studying the interaction of spare parts ordering with maintenance scheduling. The sensitivity analysis that we present offers insights for the effective management of such parallel systems, not only in a paper-making plant, which motivates our modelling development, but also in other manufacturing contexts
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