Virtual Machines Embedding for Cloud PON AWGR and Server Based Data Centres

In this study, we investigate the embedding of various cloud applications in PON AWGR and Server Based Data Centres

The Role of Private School Principals in Total Quality Mangagement and its Relation with Educational Leadership Style

The study aimed to explore the roles of private school principals in total qualitymangagement and its relation with leadership style from the perspective of the teachers. A random sample of teachers (N=100) was selected from private schools in Muscat during the academic year 2015/2016. Two instruments were tailored to achieve the objective of the study. One, measured the role of principal in total quality management, and the other measured leadership style. The results revealed that principals of private schools use total quality management to a medium level and they follow the democratic style in their leadership. Also, there was a relationship between TQM and leadership style. The study offered few recommendations that may help implement TQM in private schools

Semantic metrics

In the context of the Semantic Web, many ontology-related operations, e.g. ontology ranking, segmentation, alignment, articulation, reuse, evaluation, can be boiled down to one fundamental operation: computing the similarity and?or dissimilarity among ontological entities, and in some cases among ontologies themselves. In this paper, we review standard metrics for computing distance measures and we propose a series of semantic metrics. We give a formal account of semantic metrics drawn from a variety of research disciplines, and enrich them with semantics based on standard Description Logic constructs. We argue that concept-based metrics can be aggregated to produce numeric distances at ontology-level and we speculate on the usability of our ideas through potential areas

Modeles de Markov caches : theorie et techniques de base : partie I

Projet META2Résumé disponible dans le fichier PD

Genetic Analysis of Baker's Yeast Msh4-Msh5 Reveals a Threshold Crossover Level for Meiotic Viability

During meiosis, the Msh4-Msh5 complex is thought to stabilize single-end invasion intermediates that form during early stages of recombination and subsequently bind to Holliday junctions to facilitate crossover formation. To analyze Msh4-Msh5 function, we mutagenized 57 residues in Saccharomyces cerevisiae Msh4 and Msh5 that are either conserved across all Msh4/5 family members or are specific to Msh4 and Msh5. The Msh5 subunit appeared more sensitive to mutagenesis. We identified msh4 and msh5 threshold (msh4/5-t) mutants that showed wild-type spore viability and crossover interference but displayed, compared to wild-type, up to a two-fold decrease in crossing over on large and medium sized chromosomes (XV, VII, VIII). Crossing over on a small chromosome, however, approached wild-type levels. The msh4/5-t mutants also displayed synaptonemal complex assembly defects. A triple mutant containing a msh4/5-t allele and mutations that decreased meiotic double-strand break levels (spo11-HA) and crossover interference (pch2Δ) showed synergistic defects in spore viability. Together these results indicate that the baker's yeast meiotic cell does not require the ∼90 crossovers maintained by crossover homeostasis to form viable spores. They also show that Pch2-mediated crossover interference is important to maintain meiotic viability when crossovers become limiting

Pediatric adenotonsillectomy in a low resource setting: Lessons and implications

Objectives: To examine the practices related paediatric adenotonsillectomy in our setting especially in relation to blood request and transfusion, routine investigations, post-operative analgesic practice and complications.Methods: We reviewed the record of paediatric patients who had adenotonsillectomy in our facility over a 5-year period to obtain relevant information to our study. Results: There were 33 males and 19 females with mean age of 3.27 ± 2.76 years. Sinus tachycardia was found in 11(21.2 %) of the subjects and T wave anomaly in 1(1.9%) of the subject. Thirty-five (67.3%) patient had adenotonsillectomy, 13(25.0 %) adenoidectomy only and 4(7.7%) tonsillectomy only. Majority of the patients (24, 46.2%) were classified as ASA physical status I. Pre-operative blood request rate was high (49, 94.3%) though the transfusion rate was 1.9 % (1 patient). Acetaminophen combined with other analgesics was used for post-operative analgesia for most of the patients. There was significant weight gain post-operatively among patient Conclusions: Cold steel adenotonsillectomy is safe and effective in our environment. We believe that there is no justification for routine pre-operative blood request as a preconditions for surgery. We also like to suggest that post-operative pain management be streamlined taking into consideration the available analgesics in our setting.Keywords: Adenoidectomy, analgesia, pediatric, tonsillectomy, transfusio

Shear design of HSC beams with combination of links and horizontal web steel

The existing recommendations in Eurocode 2 and the British Code of Practice for the shear design of beams are derived from research conducted essentially on normal-strength concrete (NSC) with cube strengths up to 50 MPa, and it was found that the shear strengths of high-strength concrete (HSC) members made with limestone aggregate are below the characteristic resistances of identical NSC members. Previous experimental tests have also shown that significant differences exist in the angle of crack of shear failure of NSC and HSC. This paper presents data from five beam tests, which demonstrate that HSC with limestone aggregate has a reduced shear strength compared with NSC made with gravel and thus shows a gap in knowledge in the design approach to shear resistance of HSC beams. Previous investigations have suggested that horizontal web steels can contribute to the overall shear resistance of a reinforced concrete member in conjunction with the other constituents, concrete, tension and shear steel. The paper also presents data from tests on 11 beam tests and shows that the shear resistance of HSC beams is highly dependent on dowel action resulting from horizontal web bars positioned at the centre of the depth of the beam. Past attempts to quantify this dowel action are investigated and an improved design rule is proposed

Creatine Kinase Activity and Malondialdehyde in the Seminal Plasma of Normospermic Infertile Males

Background: Normospermia might be a major problem to the doctor and the infertile couple because the male seminal sample has an accepted seminal parameters during the routine seminal examination and the female partner will be claimed for the infertility and she will suffered from coasty, painful, time consuming, non indicated investigations and treatments. Our purpose was to measure sperm creatine phosphokinase (CK) activity, which reflects cytoplasmic retention in immature spermatozoa and malondialdehyde in the seminal plasma which is a marker of oxidative stress in normospermic infertile males' seminal samples. Patient and methods: Nine infertile men with aberrantly normal standard seminal analysis parameters where included in this study and fifteen fertile men samples where used as control. The seminal kinase and seminal malondialdehyde were calculated in addition to the standard seminal analysis. Results: significant higher levels of creatine kinase and malondialdehyde in the normospermic infertile samples (p=0.0001; p=0.006 respectively) and also significant positive correlation between the seminal creatine kinase and seminal malondialdehyde (p=0.001; r=0.613). These markers did not correlate with the percentage of mid piece abnormalities in the studied samples. Conclusion: The seminal plasma creatine kinase and seminal malondialdehyde might be accepted methods to differentiate infertile samples from healthy despite the presence of accepted ranges of standard seminal analysis

Patterns of Antibiotic Resistance in Staphylococcus aureus Isolates and Detection the Heteroresistance to Vancomycin by Population analysis Method

Staphylococcus aureus is a major cause of bacterial poisoning and spread widely in Iraq. In this study vancomycin resistant S. aureus (VRSA) were isolated from wounds, skin, and nose of human . The isolates were identified by using biochemical tests.Sixty one (72.6%) isolates were identified as S.aureus, followed by CoNS 23 (27.3%) from 250 sample collected. Antibiotic susceptibility was determined by disk diffusion ,the results of the susceptibility test indicated that 59 S. aureus isolates have different levels of resistance to antibiotics.In this study tow methods were used to identify resistant and intermediate resistance to vancomycin: which were Kirby-Bauer disk diffusion and automated system Vitek2 method. Results of Disk diffusion method indicated that (19.6%) isolates were resistant to vancomycin.The results of Vitek2 resistant test for 20 isolates indicated that 9(45%) isolates were resistant to vancomycin, with MIC value of (32 μg / ml); 3(15%) isolates showed intermediate resistant to vancomycin, with MIC value of (4 μg / ml),8(40%) isolates showed sensitive to vancomycin with MIC value of (≤0.5-2 μg / ml).Population analysis profile (PAP) method was uesd to detect Heteroresistant Vancomycin-Intermediate Staphylococcus aureus for the 10 isolates. The results showed that 9 (90%) isolates of S.aureus were resistant to vancomycin , while 1(10%) isolate was sensitive

Early Detection of Paediatric Cancer: Equipping Primary Health‑Care Workers in Nigeria

Background: Paediatric cancer patients in Nigeria continue to arrive at specialist centers with advanced‑stage disease. The reasons for this are myriad, not least of which are delays in detection, diagnosis, and referral for treatment. While delayed presentation has often been reported from the perspective of delays from caregivers’ decisions, institutional deficiencies in the health care system may account for an unmeasured portion of the factors leading to delayed presentation. This project centered around training of health‑care professionals at community level to detect potential paediatric cancer signs and refer appropriately. Aim: The aim of the study is to access the immediate impact of training on early detection and referral of possible paediatric cancer cases in the community and primary level health care workers and professionals in the Southwest Nigeria. Materials and Methods: This was a retrospective review of the training impact in three South‑Western states in Nigeria. Scores before and after the training were analyzed using the IBM SPSS statistics, version 23 (IBM, Armonk, NY, USA). Results: A total of 732 primary health care workers were trained. In the pre assessment evaluations, 44.8% of participants reported that cancer did not occur in children, 47.2% did not know any referral pathway for a child suspected of cancer. The post training assessment indicated an improvement in participants’ understanding of common paediatric cancers types and how to refer a suspected case for specialist diagnosis and attention. Mean scores before and after the training were 3.5/15 and 12.5/15, respectively. Conclusion: Training health-care professionals working at the community level can have an immediate and measurable impact on early detection and referral for paediatric cancers, as seen by the difference in pre training and post training assessment scores. There remains a need for continuous training to ensure early referral and ultimately increase survival indices of children diagnosed with cancer in Nigeria