Purpose: The purpose of the study is to determine website ACCESSibility status of central libraries of 20 superior universities associated with Ministry of Science ‚ Research ‚ and Technology based on worldwide web consortium guidelines.Methodology: This paper is an applied study using EVALuation method in accordance with 15 indices extracted from guidelines of web content ACCESSibility of the consortium. ‚ ACCESSibility of 20 central libraries’ websites of superior universities associated with Ministry of Science‚ Research‚ and Technology which have gained 1-20 grades due to university ranking of the Ministry‚ have been EVALuated by technical method (mechanical-manual) based on indices of the first priority extracted from worldwide web consortium. Mechanical EVALuation was performed by EVALACCESS 2.0 APPLICATION and manual EVALuation was developed by using the checklist extracted from indices of the first priority of worldwide web consortium guideline.Findings: The data demonstrated that in mechanical EVALuation method‚ the central library website and the document center of Gilan University with 19 points and grade 1‚ and the central library Website of Mashhad Ferdosi University with 472 points and grade 18 are the most and the least ACCESSible websites respectively. In manual EVALuation the average of websites ACCESSibility is 23%. Totally the ACCESSibility rate of the websites is below 50% that is too far from the desirable outcome. Finally‚ some techniques and suggestions have been offered to improve websites ACCESSibility.Conclusion: The paper is the second applied study in the field of website ACCESSibility EVALuation and the first applied study in the field of Iranian academic websites ACCESSibility EVALuation. The study data may develop a global perspective to policy makers to design ACCESSible websites.

Background: AngioACCESS is one of the main treatment procedures for surgeons considering dialysis patients. End stage renal disease patients have to spend most of their lives under dialysis; therefore, given the high expenditure of angioACCESS surgeries, this study was conducted to EVALuate the patency rate and complications of arteriovenous ACCESS operations.Methods: In this prospective study, 169 patients underwent 311 ACCESS surgeries for hemodialysis. Data was collected through questionnaires and analyzed by SPSS.Findings: Life table analysis showed that of 169 patients with fistulas, 84.9% of cases were patent after 2 months, and 80.5% and 73% were patent after 4 and 6 months, respectively. There was no significant difference between diabetic and non-diabetic patients patency rate in cubital ACCESS, but the patency rate in distal fistulas was significantly lower in diabetics. Different complications were recorded in 48.6% of patients, mainly heart failure and mild edema.Conclusion: Diabetes was higher among our cases than normal population which can be due to poor screening programs and low information on risks and correct follow-up of patients. In diabetic patients, cubital fistulas should be considered prior to distal ACCESSes. Complication rate in our study was higher than those reported. Since complications are significantly surgeon dependent, more attention to residential education and participating in related workshops can be helpful.

Despite the fact that kerogen decomposition has not been yet very well understood, it is possible to obtain kinetic parameters which correlate with both empirical and natural geologic data by pyrolysing samples in closed and open systems. In this study, in order to determine hydrocarbon source rocks kinetic parameters, synthetic maturation by using open pyrolysis system (Rock-EVAL) was used. In order to determine the equation of the real pyrolysis temperatures, the Rock-EVAL pyrolysis oven was calibrated against three standard samples. Three source rock samples from three well known Iranian source rock formations namely Pabdeh, Garu and Kazhdumi were anafyzed at temperature rates of 25, 15, 10 and 5°c/min and their kinetic parameters including activation energy distribution, Arrehnus coefficient and the amount of generated hydrocarbon were determined.

In recent years, we are constantly facing the increase of Internet of Things devices in the fields of health, agriculture, industry and other APPLICATIONs. The using of these networks will increase by improving the quality of service. Usually, data are generated heterogeneously by IoT’s sensors at different times with   different sizes and priorities, and none of previous works in this field do not consider all these modes together; on the other hand, these studies either have worked on the queue model and priority package selection, or on the channel ACCESS methods and its prioritization. Therefore, in our proposed model in this paper, with the aim of improving quality of service, thight scheduling of delay-sensitive packets, and also avoiding starvation for lower priority packets, we consider an architecture including two levels of prioritization. In the first level, the packet is selected for sending based on a type of dynamic prioritization and relative to its delay deadline field. Since in this paper the APPLICATION of Internet of Things in health care is considered, the sensors generate data both of modes, periodically (fixed) and on demand (critical), and therefore, two queue models D /G/1 and M/G/1 are used. In addition, the second level includes channel prioritization. At this level, by using a control channel and setting the waiting time of the sending node for listening to the channel, we have sending the packet through the control channel. Furthermore, a consolidated channel hopping model has been used for nodes to use the available bandwidth. Also, a buffer to keep the information of the last connection of the node helps to send and receive faster with less number of switching. After simulating and comparing this model with the 802.11 standard and similar media ACCESS protocols, significant improvements in increasing the packet delivery rate, operational throughput, and also reducing the end-to-end delay are showed.

Introduction: Inability to establish a success vascular ACCESS or associated complications are major causes of morbidity and mortality in ESRD patients.Objective: Relative Frequency of Success and Complications of Vascular ACCESS in End Stage Renal Disease (ESRD) in Razi Hospital (2007).Materials and Methods: This descriptive-cross sectional study was performed on ESRD patients in Razi Hospital. The data were collected based on interview and physical examination. Because of the probability of failure in ACCESS of any patient and need to another ACCESS establishment, the ACCESS numbers was more than the patients number.Results: Among total of 151 patients 59.6% of patients was man and 40.4% was woman. The mean age of patients was 54.22±14.39 years. Success rate of dialysis was 86.1%. 82.9% of vascular ACCESS was used less than 2 months of creation (mean=31-60 days). 32 cases of complications (15.6%) were recorded which included: 9 cases of false aneurysm, 9 cases of venous hypertension, 5 cases of infection, 4 cases of steal syndrome, 3 cases of true aneurysm and 2 cases of thrombosis. The most number of complications were happened in antecobital AVF.Conclusion: Success rate of dialysis in this study is like that other studies.  Because of patients don't refer in proper time; use of vascular ACCESS was performed in less than 2 months of creation. It can increase complications and decrease patency rate of vascular ACCESS. On the other hand, to decrease the cost, usage of graft is less than native AVF, it could be reason of increased presence of complications in native AVF.

Background: While considering the rise in the mean age of the chronic renal failure (CRF) patients and increasing frequency of those who need constant hemodialysis, the creation of a native arteriovenous fistula (AVF) is not possible, which could be due to the inACCESSibility of the superficial veins. This study was conducted to EVALuate the efficacy of the vascular ACCESS, using cryopreserved jugular vein.Materials and Methods: In this experimental study, 15 sheep (Wt.= 30-40 kg) were selected between the year 2001 and 2002. The external jugular vein of each sheep was excised and after cryopreservation was put in liquid nitrogen (-196°C). Twenty-eight days later, the sample veins were used as allograft (in another sheep), and autograft (in the same sheep) and were placed between carotid artery and external jugular vein as bridge AVF. The efficacy, function, and patency were EVALuated using doppler sonography and pathologic report.Results: Patency rate of sample was 100% after 3 months in both allografts and autografts. Thrombosis, hematoma, and infection were not seen. No inflammation was detected in pathologic report.Conclusion: This study showed that using allograft vein for vascular ACCESS is feasible and suitable, and it is recommended specially for those with previously infected fistula.

Different types of contact, including contact between node pairs, any-contact of nodes, and contacts of the entire network, are used to characterize social relations in mobile social networks. Different modes of routing, from the point of view of message delivery semantics, encompass unicasting, multicasting, any-casting, and broadcasting. Studies have shown that using probability distribution functions of contact data, which is mainly assumed to be homogeneous for nodes, improves the performance of these networks. However, there exists an important challenge in studies on distributions. A lot of works apply the distribution of one type of contact to other types. Hence in routing APPLICATIONs, it causes to use of the distribution of one type of contact for any mode of routing. This study provides a complete solution to model each type of homogeneous contact data distribution and to use them in different modes of routing. We propose a routing algorithm that uses this new model. Results show that our solution improves the average latency of comparing methods Epidemic, TCCB, and DR about 3.5-times, 30%, and 45%, respectively. It achieves a delivery rate of about 5% and 6%, and average latency about 6% and 8% better than that of DR and TCCB, respectively.