88 research outputs found
A Multiparous Woman with Lately Diagnosed Multilevel Left Ventricular Obstruction
A 56-year hypertensive, multiparous woman presented to the cardiology unit with Canadian Cardiovascular Society (CCS) class-III angina and worsening dyspnea for the past few weeks. Her clinical examination showed high blood pressure and mid-systolic crescendo-decrescendo murmur radiating to carotids. However, there was no radio-femoral delay or significant blood pressure difference between her arms. Her transthoracic echocardiography (TTE) revealed moderate aortic stenosis (AS) and mid cavity left ventricular outflow (LVO) obstruction. Left heart catheterization (LHC) showed coarctation of aorta with extensive collaterals, mid cavity LVO obstruction, and moderate AS. Thus, she was diagnosed as a case of multi-level LVO obstruction including mid cavity LVO obstruction AS and coarctation of aorta. She underwent stenting of aortic coarctation as the initial step of graded approach to her disease, and is doing well
Assessment of academic departments efficiency using data envelopment analysis
Purpose:
In this age of knowledge economy, universities play an important role in the development of a country. As government subsidies to universities have been decreasing, more efficient use of resources becomes important for university administrators. This study evaluates the relative technical efficiencies of academic departments at the Islamic University in Gaza (IUG) during the years 2004-2006.
Design/methodology/approach:
This study applies Data Envelopment Analysis (DEA) to assess the relative technical efficiency of the academic departments. The inputs are operating expenses, credit hours and training resources, while the outputs are number of graduates, promotions and public service activities. The potential improvements and super efficiency are computed for inefficient and efficient departments respectively. Further, multiple linear -regression is used to develop a relationship between super efficiency and input and output variables.
Findings:
Results show that the average efficiency score is 68.5% and that there are 10 efficient departments out of the 30 studied. It is noted that departments in the faculty of science, engineering and information technology have to greatly reduce their laboratory expenses. The department of economics and finance was found to have the highest super efficiency score among the efficient departments. Finally, it was found that promotions have the greatest contribution to the super efficiency scores while public services activities come next.
Research limitations/implications:
The paper focuses only on academic departments at a single university. Further, DEA is deterministic in nature
The comparison of risky and ambiguity decision making and cool executive functions between patients with obsessive compulsive disorder and healthy controls
Background: Executive functioning has been evaluated in obsessive compulsive disorder (OCD). Cool and hot executive functioning discrimination provided a different way of conceptualising executive functions. Objectives: The aim of this study was to compare ambiguity and risky decision-making and cool executive functions in an OCD and a healthy control group. The relationship between decision-making and cool executive functioning was investigated. Methods: Sixty-two OCD patients and 48 healthy control participants were compared. Decision-making was measured using the Iowa Gambling Task. The cool executive functioning was assessed using the Stroop Test and the Wisconsin Card Sorting Task (WCST). Results: The OCD group completed the WCST and the Stroop Test statistically significantly with a lower score than that of the control group. The OCD group had impaired response inhibition and set-shifting that indicate impaired cool executive functioning. In contrast to a lack of a statistically significant difference, the risky decision-making performance was worse in the OCD group than in the healthy control group and in the unmedicated OCD patients than in the medicated OCD patients. Discussion: The OCD patients had a poorer performance in risky decision-making and cool executive functioning. There was a link between risky decision-making performance and impaired cool executive functions
An In-Depth Empirical Investigation of State-of-the-Art Scheduling Approaches for Cloud Computing
Recently, Cloud computing has emerged as one of the widely used platforms to provide compute, storage and analytics services to end-users and organizations on a pay-as-you-use basis, with high agility, availability, scalability, and resiliency. This enables individuals and organizations to have access to a large pool of high processing resources without the need for establishing a high-performance computing (HPC) platform. From the past few years, task scheduling in Cloud computing is reckoned as eminent recourse for researchers. However, task scheduling is considered an NP-hard problem. In this research work, we investigate and empirically compare some of the most prominent state-of-the-art scheduling heuristics in terms of Makespan, Average resource utilization (ARUR), Throughput, and Energy consumption. The comparison is then extended by evaluating the approaches in terms of individual VM level load imbalance. After extensive simulation, the comparative analysis has revealed that Task Aware Scheduling Algorithm (TASA) and Proactive Simulation-based Scheduling and Load Balancing (PSSLB) outperformed as compared to the rest of the approaches and seems to be optimal choice keeping in view the trade-of between the complexities involved and the performance achieved concerning Makespan, Throughput, resource utilization, and Energy consumption
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Phenotypic and molecular detection of biofilm formation in staphylococcus aureus Isolated from Different Sources in Algeria
Staphylococcus aureus is an opportunistic bacterium causing a wide variety of diseases.
Biofilm formation of Staphylococcus aureusis of primary public and animal health concern. The purposes
of the present study were to investigate the ability of Staphylococcus aureus isolated from animals,
humans, and food samples to form biofilms and to screen for the presence of biofilm-associated and
regulatory genes. In total, 55 Staphylococcus aureusisolated from sheep mastitis cases (n=28), humans (n
= 19), and from food matrices (n = 8) were identified using matrix-assisted laser desorption/ionization
time-of-flight mass spectrometry (MALDI-TOF MS). The ability of Staphylococcus aureus for slime
production and biofilm formation was determined quantitatively. A DNA microarray examination
was performed to detect adhesion genes (icaACD and biofilm-associated protein gene (bap)), genes
encoding microbial surface components recognizing adhesive matrix molecules (MSCRAMMs),
regulatory genes (accessory gene regulator (agr) and staphylococcal accessory regulator (sarA)), and
the staphylococcal cassette chromosome mec elements (SCCmec). Out of 55 Staphylococcus aureus
isolates, 39 (71.0%) and 23 (41.8%) were producing slime and biofilm, respectively. All Staphylococcus
aureus strains isolated from food showed biofilm formation ability. 52.6% of the Staphylococcus aureus
strains isolated from sheep with mastitis, and 17.9% of isolates from humans, were able to form a
biofilm. Microarray analysis typed the Staphylococcus aureus into 15 clonal complexes. Among all
Staphylococcus aureus isolates, four of the human isolates (21.1%) harbored the mecA gene (SCCmec
type IV) typed into 2 clonal complexes (CC22-MRSA-IV and CC80-MRSA-IV) and were considered as
methicillin-resistant, while two of them were slime-producing. None of the isolates from sheep with
mastitis harbored the cna gene which is associated with biofilm production. The fnbB gene was found
in 100%, 60% and 40% of biofilm-producing Staphylococcus aureus isolated from food, humans, and
sheep with mastitis, respectively. Three agr groups were present and agr group III was predominant
with 43.6%, followed by agr group I (38.2%), and agr group II (18.2%). This study revealed the capacity
of Staphylococcus aureus isolates to form biofilms and highlighted the genetic background displayed
by Staphylococcus aureus isolates from different sources in Algeria
Analysis of obstacles and shortages of foreign finance supply in Iran laws
Abstract It can play an important role of foreign finance supply which it is famous (Finance) in developing countries such as Iran. The capital needs a secure environment for operation thought the accepting fund should provide a secure and legal base for their confidence. The important point in this concern, it is the security and stability in the economic, political and regulation field in any country industry for absorbing foreign funds. The point of risks and their efficiency on foreign investment and its management is important. In this paper it is analyzed eight methods of foreign supply and its legal situation in Iran
Rationale and design of the CONFIRM2 (Quantitative COroNary CT Angiography Evaluation For Evaluation of Clinical Outcomes: An InteRnational, Multicenter Registry) study.
BACKGROUND
In the last 15 years, large registries and several randomized clinical trials have demonstrated the diagnostic and prognostic value of coronary computed tomography angiography (CCTA). Advances in CT scanner technology and developments of analytic tools now enable accurate quantification of coronary artery disease (CAD), including total coronary plaque volume (TPV) and low attenuation plaque volume (LAP). The primary aim of CONFIRM2, (Quantitative COroNary CT Angiography Evaluation For Evaluation of Clinical Outcomes: An InteRnational, Multicenter Registry) is to perform comprehensive quantification of CCTA findings, including coronary, non-coronary cardiac, non-cardiac vascular, non-cardiac findings, and relate them to clinical variables and cardiovascular clinical outcomes.
DESIGN
CONFIRM2 is a multicenter, international observational cohort study designed to evaluate multidimensional associations between quantitative phenotype of cardiovascular disease and future adverse clinical outcomes in subjects undergoing clinically indicated CCTA. The targeted population is heterogenous and includes patients undergoing CCTA for atherosclerotic evaluation, valvular heart disease, congenital heart disease or pre-procedural evaluation. Automated software will be utilized for quantification of coronary plaque, stenosis, vascular morphology and cardiac structures for rapid and reproducible tissue characterization. Up to 30,000 patients will be included from up to 50 international multi-continental clinical CCTA sites and followed for 3-4 years.
SUMMARY
CONFIRM2 is one of the largest CCTA studies to establish the clinical value of a multiparametric approach to quantify the phenotype of cardiovascular disease by CCTA using automated imaging solutions
Epidemiology and antimicrobial resistance trends of Acinetobacter species in the United Arab Emirates: a retrospective analysis of 12 years of national AMR surveillance data
Introduction: Acinetobacter spp., in particular A. baumannii, are opportunistic pathogens linked to nosocomial pneumonia (particularly ventilator-associated pneumonia), central-line catheter-associated blood stream infections, meningitis, urinary tract infections, surgical-site infections, and other types of wound infections. A. baumannii is able to acquire or upregulate various resistance determinants, making it frequently multidrug-resistant, and contributing to increased mortality and morbidity. Data on the epidemiology, levels, and trends of antimicrobial resistance of Acinetobacter spp. in clinical settings is scarce in the Gulf Cooperation Council (GCC) and Middle East and North Africa (MENA) regions. Methods: A retrospective 12-year analysis of 17,564 non-duplicate diagnostic Acinetobacter spp. isolates from the United Arab Emirates (UAE) was conducted. Data was generated at 317 surveillance sites by routine patient care during 2010-2021, collected by trained personnel and reported by participating surveillance sites to the UAE National AMR Surveillance program. Data analysis was conducted with WHONET. Results: Species belonging to the A. calcoaceticus-baumannii complex were mostly reported (86.7%). They were most commonly isolated from urine (32.9%), sputum (29.0%), and soft tissue (25.1%). Resistance trends to antibiotics from different classes during the surveillance period showed a decreasing trend. Specifically, there was a significant decrease in resistance to imipenem, meropenem, and amikacin. Resistance was lowest among Acinetobacter species to both colistin and tigecycline. The percentages of multidrug-resistant (MDR) and possibly extensively drug-resistant (XDR) isolates was reduced by almost half between the beginning of the study in 2010 and its culmination in 2021. Carbapenem-resistant Acinetobacter spp. (CRAB) was associated with a higher mortality (RR: 5.7), a higher admission to ICU (RR 3.3), and an increased length of stay (LOS; 13 excess inpatient days per CRAB case), as compared to Carbapenem-susceptible Acinetobacter spp. Conclusion: Carbapenem-resistant Acinetobacter spp. are associated with poorer clinical outcomes, and higher associated costs, as compared to carbapenem-susceptible Acinetobacter spp. A decreasing trend of MDR Acinetobacter spp., as well as resistance to all antibiotic classes under surveillance was observed during 2010 to 2021. Further studies are needed to explore the reasons and underlying factors leading to this remarkable decrease of resistance over time
COVID-19 Vaccination Among Diverse Population Groups in the Northern Governorates of Iraq
Objectives: The present study was carried out to investigate COVID-19 vaccination coverage among populations of internally displaced persons (IDPs), refugees, and host communities in northern Iraq and the related underlying factors.Methods: Through a cross-sectional study conducted in five governorates in April–May 2022, 4,564 individuals were surveyed. Data were collected through an adapted questionnaire designed to gather data on participants.Results: 4,564 subjects were included (59.55% were 19–45 years old; 54.51% male). 50.48% of the participants (51.49% of host communities, 48.83% of IDPs, and 45.87% of refugees) had been vaccinated with at least one dose of COVID-19 vaccine. 40.84% of participants (42.28% of host communities, 35.75% of IDPs, and 36.14% of refugees) had been vaccinated by two doses, and 1.56% (1.65% of host communities, 0.93% of IDPs, and 1.46% of refugees) were vaccinated with three doses.Conclusion: Sociodemographic factors including age, gender, education, occupation, and nationality could affect vaccination coverage. Moreover, higher acceptance rate of vaccination is associated with belief in vaccine safety and effectiveness and trust in the ability of the vaccine to prevent complications
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