521 research outputs found
Security vulnerabilities related to web-based data
In this digital era, organizations and industries are moving towards replacing websites with web applications for many obvious reasons. With this transition towards web-based applications, organizations and industries find themselves surrounded by several threats and vulnerabilities. One of the largest concerns is keeping their infrastructure safe from attacks and misuse. Web security entails applying a set of procedures and practices, by applying several security principles at various layers to protect web servers, web users, and their surrounding environment. In this paper, we will discuss several attacks that may affect web-based applications namely: SQL injection attacks, cookie poisoning, cross-site scripting, and buffer overflow. Additionally, we will discuss detection and prevention methods from such attacks
Difficulties of Nursing Students During Clinical Training
Background: Nursing practice in the 21st century faces a number of challenges including increased nursing teaching schools and institutes, in adequate nursing staff, increasing healthcare costs, limited facilities, need for preceptor (link teacher), in adequate quality and numbers of hospitals. Clinical practice is crucial in nursing to integrate theory and practice to acquire skills and capability of critical thinking, solve problems and decision making. Aim of the Study: identify the difficulties which encountered the students of nursing college in the hospitals of Kirkuk city during study year 2011-2012, also to assess the extent of benefit from clinical training in the hospitals. Methodology: A descriptive study, using the assessment approach was conducted on students of college of nursing /Kirkuk University from 2/5/2012 to 24/4/2013. A purposive, non-probability sample composed of (200) students (male & female) from the (2nd, 3rd &4th) classes were selected for the study. A questionnaire was developed for purposive of study & included 3 parts were demographic data, difficulties which encountered student & benefit of student from clinical training. The analysis of data was done by application of descriptive statistical data analysis approach (frequency, percentage, and the mean of scores). Results: The age group (22-24) years was represent (51%) of the sample, the female represent (80%) from the sample, 2nd class were (42%) from the sample, & (68, 5%) were living in urban. Conclusions: Most of the students were young, female, live in urban, and from the 2nd class. The findings were moderate for the teacher related factors, Health staff & patients related factors, student & tasks performance related factors, place and time related factors, And most of the students were moderately benefited from clinical training in the hospitals
Decay Rates of Plasmonic Elliptical Nanostructures via Effective Medium Theory
This paper investigates the spontaneous decay rate of elliptical plasmonic nanostructures. The refractive index was analyzed using the effective medium theory (EMT). Then, the polarizability, spontaneous radiative, non-radiative decay rate, and electric field enhancement factor were characterized for the targeted elliptical nanostructures at different aspect ratios. All of the optical analyses were analyzed at different distances between the excited fluorescent coupled atom and the plasmonic nanostructure (down to 100 nm). This work is promising in selecting the optimum elliptical nanostructure according to the required decay rates for optical conversion efficiency control in energy harvesting for solar cells and optical sensing applications
COMPARATIVE ULTRASONOGRAPHIC MEASUREMENT OF RENAL SIZE AND ITS CORRELATION WITH AGE, GENDER, AND BODY MASS INDEX IN NORMAL SUBJECTS IN SULAIMANI REGION
Background: The renal size of a population is a very useful diagnostic parameter in the practice of medicine. Since the renal size is affected by various factors, it is necessary to first determine the normal value. Objective:The aim of this study is to provide an estimation of renal size in normal subjects in Sulaimani Teaching Hospital, and to study its relation with age, gender, and body mass index (BMI) using ultrasonography. Therefore, this provides a standard data for our locality as we are deficient of them. Method:A cross sectional descriptive study was conducted in Sulaimani Teaching Hospital during the period of June 2013 to February 2014. 450 random volunteer person were included in the study aging between 18 - 96 years, without any known renal diseases.The total sample of the study were 450 person. 239 person (53%) were females, while 211 person (47%) were males. The mean of the right renal size in males was 76553.9947 mm3, while the mean of the left renal size was 94493.9mm3. In females, the mean of the right renal size was 68324.0292mm3, while the mean of the left renal size was 84150.43264mm3. Mean renal size for the right kidney was 72210.9842 mm3,While the mean renal size for the left kidney was 89031.0296 mm3. Results:There was a positive correlation between the size of the right and left kidney, with the left kidney size which is larger. There was also a positive correlation between renal size and age, as renal size increased with age till the 5th decade of life. While the male renal size was greater than the female renal size with the same age group, there was a positive correlation between renal size and body mass index (BMI)
Improving the Antibacterial Activity of Ceftazidime by Inulinase Purified from Staphylococcus Aureus
Inulinase is an enzyme catalyzing the hydrolysis of inulin, a plant stored polysaccharide, into fructoses and fructo- oligosaccharides that have a large spectrum of applications ranging from food industry to bioethanol production and pharmacology.Eight isolates of Staphylococcus aureus were isolated from agricultural rhizosphere soil samples with isolation percentage(32%) and screened for higher inulinase production and found that Staphylococcus aureusS3 was the best producer. Inulinase was partially purified with ammonium sulfate at 70% saturation and the specific activity reached to (7.01)U/mg protein. Inulinase led to enhancement ceftazidime activity against the bacteria and gram positive bacteria more sensitive than negative bacteria to combination of inulinase and ceftazidime. These finding indicate that antistaphylococcal activity of ceftazidime antibiotic has increased in the presence of inulinase enzyme and the inulinase may be useful adjuvant agent for the treatment of S. aureus infections in combination with this antibiotic
In Vitro Antibacterial Activity of Solanum Lycopersicum Extract against some Pathogenic Bacteria
The aqueous extract of tomato evaluated for activity against medically important bacteria Escherichia coli, Klebsiella sp. , Pseudomonas sp Acinetobacter, this research was screened the capability of the extract to inhibit the growth of some isolated bacteria. The in vitro antimicrobial activity was performed by agar well diffusion method. The aqueous tomato extract showed the maximum antimicrobial activity when diluted with honey than diluted with distal water . Sensitivity and resistance to extract and antibiotic varied from bacteria to another but Solanum lycopersicum proved active effects against all bacteria at pure extract without resistance with inhibition zone ranged(35-50) mm when we mixed Solanum lycopersicum with honey. The extract exhibited the higher activity until in diluted concentrations ,comparative by using the extract alone . The use of tomato extract with known antimicrobial properties, can be of great significance in therapeutic treatments in vivo. Keywords: tomato, Solanum lycopersicum ,aqueous extract, antibacterial activity, diluted with distal water &hone
Free radical scavenging activity of conjugated linoleic acid as single or mixed isomers.
Context: Conjugated linoleic acids (CLAs) are a mixture of positional and geometric isomers of linoleic acid (LA) and believed to have many positive biological activities. Objective: The present study was undertaken to assess the antioxidant activity of cis-9, trans-11 and trans-10, cis-12 as single or mixed CLA isomers at two ratios, 1:6 and 1:13 (trans-10, cis-12/cis-9, trans-11). Materials and methods: A microplate reader was used to determine the free radical scavenging properties of CLAs against DPPH radical in ethanol. Results: The kinetic reactions of CLA-DPPH• showed that all tested CLAs have exerted radical scavenging activities in a dose-dependent manner and observed to immediately react and quench DPPH radicals at all tested levels and no lag phase was noticed in CLA-DPPH• reactions. The median inhibitory concentration (IC50) value for cis-9, trans-11 CLA was observed to be more effective than other tested CLA. Total antioxidant capacity (TAC) of all tested CLAs were less effective radical scavengers as compared to vitamin E and butylated hydroxytoluene, although all tested CLAs were quenched a high amount (P<0.05) of DPPH free radicals. Discussion and conclusion: All tested CLAs have the ability to directly react and quench DPPH free radicals in ethanol. Furthermore, trans-10, cis-12 CLA has greater maximal efficacy than other tested CLAs as free radical scavenger, while cis-9, trans-11 CLA is the most potent isomer to directly react and quench free radicals at low concentrations in the system, suggesting that the free radical scavenging activity of CLA isomers may contribute to their diverse biological activities
Multi-objective NSGA-II based community detection using dynamical evolution social network
Community detection is becoming a highly demanded topic in social networking-based applications. It involves finding the maximum intraconnected and minimum inter-connected sub-graphs in given social networks. Many approaches have been developed for community’s detection and less of them have focused on the dynamical aspect of the social network. The decision of the community has to consider the pattern of changes in the social network and to be smooth enough. This is to enable smooth operation for other community detection dependent application. Unlike dynamical community detection Algorithms, this article presents a non-dominated aware searching Algorithm designated as non-dominated sorting based community detection with dynamical awareness (NDS-CD-DA). The Algorithm uses a non-dominated sorting genetic algorithm NSGA-II with two objectives: modularity and normalized mutual information (NMI). Experimental results on synthetic networks and real-world social network datasets have been compared with classical genetic with a single objective and has been shown to provide superiority in terms of the domination as well as the convergence. NDS-CD-DA has accomplished a domination percentage of 100% over dynamic evolutionary community searching DECS for almost all iterations
Importance of the Factors for Hiring a University Lecturer: A Case Study at TIU Sulaymaniyah
Human resource management is one of the key departments at the organizations to improve employee abilities and skills based on the objectives of the companies. Accordingly, finding correct staff for the correct position is key responsibility for HRM to increase the competitive advantage of the organization. In this respect, this paper aims to investigate how HRM at the Tishk international university evaluates teaching staff for hiring. To understand this, we have organized a questionnaire and interviewed with the head of the departments of TIU. Results of the interviews have been evaluated through analytical hierarchy process (AHP). It has been observed that “knowledge in his/her field” is the most important factor for a lecturer to be hired TIU. Further, “Productive (writes article, does projects…etc)” is the second most important factor for the head of the departments at the university
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