1,047 research outputs found

    Ex-HABE with User Accountability for Secure Access Control in Cloud

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    Data outsourcing is becoming a useful and feasible paradigm with the rapid application of service-oriented technologies. Many researchers have tried combination of access control and cryptography to propose a model to protect sensitive information in this outsourcing scenario. However, these combinations in existing approaches have difficulty in key management and key distribution when fine-grained data access is required. Taking the complexity of fine-grained access control policy and the wide-reaching users of cloud in account, this issue would become extremely difficult to iron out. Various system models using attribute-based encryption (ABE) have been proposed however, most of them suffer from heavy overhead in implementing the access control policies. In this paper, a system is proposed with extended hierarchical attribute-based encryption (HABE) by using ciphertext-policy attribute-based encryption (ABE). It uses the hierarchical structure of users and bilinear mapping for generating the keys for various data handlers. Also the system focuses on user tracking by allocating an unique id to user. The system uses traitor tracing along with separation of duty made available by HABE and reduces the scope of key abuse. It is formally proved extended HABE with traitor tracing adds on to user accountability if user tracking for resource is maintained for hierarchical systems. DOI: 10.17762/ijritcc2321-8169.16042

    Role of magnetic resonance imaging in evaluation of perianal fistulas

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    Background: Perianal fistula is a common disorder that often recurs because of infection that was missed at surgery. Preoperative MR imaging can help to prevent recurrence. The purpose of the study was, in this article we study the various types of perianal fistulas with MR imaging and study the usefulness of MR imaging in delineating the primary tract and complications of perianal fistula.Methods: We studied MRI images of 35 patients with different types of perianal fistulas. MR imaging were performed on 1.5-T magnet MR system (Siemens magneto Essenza). Imaging was performed with multiplanar T1-weighted, T2-weighted and PDFS sequences.Results: Total 35 patients were studied, out of which 18 (51%) patients showed grade 1 (simple linear intersphincteric fistula), 5 (14%) showed grade 2 (intersphinc¬teric with abscess or secondary tract), 6 (21%) showed grade 3 (transsphincteric), 5 showed grade 5 (14%) (transsphincteric with abscess or secondary tract in ischiorectal or ischioanal fossa) and none (0%)showed  grade 5 (supralevator and translevator).Conclusions: MR imaging provides precise location of the fistulous track, and its relationship to pelvic floor and the sphincter complex   and helps in the identifi¬cation of secondary tracks and abscesses.   

    Performance Evaluation of Conventional Inverters Driven PMSM Drive using Microcontroller

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    This paper focues on Performance evaluation of conventional inverters driven PMSM drive using microcontroller. The purpose of this paper is to decrease the ripples in torque of Micro controllers based PMSM drive. The innovative method consists of conventional inverters, switched-mode power supply (SMPS), PMSM motor and Microcontroller. It is used to maximize fundamental component of torque also. The both the results of the suggested Micro controller are compared on the basis of torque and speed and improves that reduces the torque ripple and improve the dynamic response of the system in comparative analysis. This paper organizes introduction, mathematical model of the PMSM, proposed Microcontroller technique, hardware and simulation results and conclusion in different sections

    Lipid profile of patients with diabetes mellitus: a cross sectional study

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    Background: Dyslipidemia is one of the common disorders which is seen in most of the diabetes patients, which causes cardio vascular disorders. Objective: To detect the lipid abnormality in diabetic patients.Methods: The study was carried out at Medicine Department, K.J. Mehta hospital, Amargadh, Bhavnagar during period from September 2014 to August 2015. The lipid profiles and the fasting blood sugar values of 100 type-1 diabetic patients, 100 type-2 diabetic patients and 50 healthy subjects were studied after taking informed consent. Their serum samples were assessed for fasting blood glucose (FBG), total cholesterol (TC), triglycerides (TG), low density lipoprotein cholesterol (LDL) and high density lipoprotein cho­lesterol (HDL) by using standard biochemical methods. The data was collected by predesign, pretested proforma and analyzed using SPSS 17.0 (Trial version).Results: Maximum Number of patients (37% and 44%) were from age group of 20-29 years in type-1 DM & 50-59 years in type-2 DM respectively. 53% cases of type-1 DM and 70 % cases of type-2 DM had less than 140 mg/dl level of Fasting Blood Sugar (FBS. 49 % patients of type-1 DM and 30% of type-2 showed more than 200 mg/dl level of Post Prandial Blood Sugar (PPBS). Majority of type 2 DM patients (72%) showed high serum cholesterol level, while only 12% of the type1 DM patients showed high serum cholesterol level. 95% of type 1 DM patients showed normal (10-190 mg/dl) serum triglyceride level, while only 26% of type 2 DM subjects showed normal level. Serum LDL level was high (>160 mg/dl) in 78% of type 2 DM patients, while only 19% of type 1 DM patients showed higher value. All patients of type 2 had normal serum HDL level.Conclusions: The frequencies of the high cholesterol, high TG and high LDL levels were higher in the diabetic group, thus indicating that diabetic patients were more prone for dyslipidemia, which could cause cardiovascular disorders.

    Application of MPLS-TP for transporting power system protection data

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    Power utilities are increasingly dependent on the use of communications networks. These networks are evolving to be packet-based, rather than using conventional Time-Division Multiplexing (TDM) technologies. Transporting current differential protection traffic over a packet network is especially challenging, due to the safety-critical nature of protection, the strict requirements for low delay and low asymmetrical delay, and the extensive use of legacy TDM-based protocols. This paper highlights the key technical characteristics of Multi-Protocol Label Switching-Transport Profile (MPLS-TP), and demonstrates its application for transporting current differential protection traffic. A real-time hardware-in-the-loop testing approach has been used to thoroughly validate the technologies in various configurations. It is demonstrated that MPLS-TP technologies can meet the requirements of current differential protection and other, less critical applications. In particular, it is shown that delay and asymmetrical delay can be controlled through the inherent use of bi-directional paths---even when “hitless” link redundancy is configured. The importance of appropriate traffic engineering, clocking schemes, circuit emulation methods is also demonstrated

    Health profile of adolescents of Bhavnagar district, Gujarat, India: a cross sectional study

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    Background: Adolescence and young adulthood are periods of critical development and transition. Adolescent constitutes over 23% of the population in India. Nutrition and health needs of the adolescent are more because of more requirements for growth spurt and increase in physical activity. Objective: To study health profile of adolescents of Bhavnagar district. Methods: The study was carried by Medicine Department, K.J. Mehta Hospital, Amargadh, Bhavnagar during period from September 2014 to August 2015. After taking the permission of principals of 10 schools and consent of the parents of adolescents, 842 adolescents from 10 schools of Bhavnagar district were examined for nutritional deficiencies. The data was collected by predesign, pretested proforma and analyzed using SPSS 17.0 (Trial version).Results: Mean age was 15.8 ± 1.96 years. Out of 867, 433 (51.4%) were boys and 409 (48.6%) were girls. Vitamin A deficiency was present in 53 (6.3%) adolescents. Vitamin B complex deficiency signs were seen in 139 (16.5%) adolescents. Vitamin C deficiency signs were seen in 84 (10.0%) adolescents. PEM was observed in 90 (10.7%) adolescents. The study revealed that 67.0% girls were suffering from anaemia compare to 58.7% of boys. 117 (13.9%) adolescents had visual impairment.  Conclusions: Poor personal hygiene and nutritional deficiency among these adolescents needs great attention and health education.

    ShakeNet: A portable wireless sensor network for instrumenting large civil structures

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    We report our findings from a U.S. Geological Survey (USGS) National Earthquake Hazards Reduction Program-funded project to develop and test a wireless, portable, strong-motion network of up to 40 triaxial accelerometers for structural health monitoring. The overall goal of the project was to record ambient vibrations for several days from USGS-instrumented structures. Structural health monitoring has important applications in fields like civil engineering and the study of earthquakes. The emergence of wireless sensor networks provides a promising means to such applications. However, while most wireless sensor networks are still in the experimentation stage, very few take into consideration the realistic earthquake engineering application requirements. To collect comprehensive data for structural health monitoring for civil engineers, high-resolution vibration sensors and sufficient sampling rates should be adopted, which makes it challenging for current wireless sensor network technology in the following ways: processing capabilities, storage limit, and communication bandwidth. The wireless sensor network has to meet expectations set by wired sensor devices prevalent in the structural health monitoring community. For this project, we built and tested an application-realistic, commercially based, portable, wireless sensor network called ShakeNet for instrumentation of large civil structures, especially for buildings, bridges, or dams after earthquakes. Two to three people can deploy ShakeNet sensors within hours after an earthquake to measure the structural response of the building or bridge during aftershocks. ShakeNet involved the development of a new sensing platform (ShakeBox) running a software suite for networking, data collection, and monitoring. Deployments reported here on a tall building and a large dam were real-world tests of ShakeNet operation, and helped to refine both hardware and software

    Assessment of knowledge regarding anaemia and its preventive measures among lactating mothers of North Gujarat region, India

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    Background: Anaemia in pregnancy and lactation period has detrimental effects on maternal and child health. Objective of this study was to assess knowledge of lactating mothers regarding anaemia and its preventive measures before and after educational intervention.Methods: The interventional study conducted in purposively selected lactating mothers attending the outpatient department of obstetrics and gynecology. Hospital ethical committee permission was obtained. After taking informed consent 100 lactating mothers were selected by systemic random sampling methods. Knowledge of lactating mothers regarding anaemia and its preventive measures was assessed by pre-designed, pre-tested and semi structured questionnaire. Health education for 30 minutes was given to selected lactating mothers. Knowledge of pregnant women for the same was assessed after health education. Thus, collected data was analyzed using Epi info 7.Results: Awareness among lactating mothers regarding causes, signs and symptoms of anemia and dietary sources of iron was 41%, 26% and 5% respectively which was significantly increased to 73%, 56% and 42% respectively after health education. Awareness among lactating mothers regarding factors which inhibit and increase iron absorption was 31% and 22% respectively which was significantly increased to 80% and 65% respectively after health education. Out of 100 lactating mothers only 24% were aware regarding treatment of anemia.Conclusions: Lack of awareness among lactating mothers regarding anemia and its preventive measure should be addressed by health education during hospital visits

    Gray Image Colorization using Thepade’s Transform Error Vector Rotation With Cosine, Walsh, Haar Transforms and various Similarity Measures

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    The paper presents various gray image colorization methods based on vector quantization for performing automatic colorization. To colorize gray target image by extracting color pixels from source color image, Thepade’s Transform Error Vector Rotation vector quantization methods such as Thepade’s Cosine Error Vector Rotation (TCEVR), Thepade’s Walsh Error Vector Rotation (TWEVR) and Thepade’s Haar Error Vector Rotation (THEVR) are used along with varied similarity measures. The quality of colorization of gray image is subjective to the source color image and target gray image (to be colored). Here the image test bed of 25 images is used to recolor the gray equivalent of the original color images for qualitative performance comparison of proposed colorization methods with help of PSNR between original color and recolored images. Colorization is performed using diverse similarity measures which belong to different families. These nine similarity measures are used for mapping gray image pixels with relatively corresponding multichorme image pixels. When these similarity measures are assessed for their comparison for colorizing the target gray image, it is observed that Chebychev outruns all other similarity measures and the worst performance is consistently given by Jaccard and Hamming distances. Among all the considered colorization methods Thepade’s Haar Error Vector Rotation is much suitable algorithm for performing gray image colorization. DOI: 10.17762/ijritcc2321-8169.150516
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