An analysis of software aging in cloud environment

Cloud Computing is the environment in which several virtual machines (VM) run concurrently on physical machines. The cloud computing infrastructure hosts multiple cloud service segments that communicate with each other using the interfaces. This creates distributed computing environment. During operation, the software systems accumulate errors or garbage that leads to system failure and other hazardous consequences. This status is called software aging. Software aging happens because of memory fragmentation, resource consumption in large scale and accumulation of numerical error. Software aging degrads the performance that may result in system failure. This happens because of premature resource exhaustion. This issue cannot be determined during software testing phase because of the dynamic nature of operation. The errors that cause software aging are of special types. These errors do not disturb the software functionality but target the response time and its environment. This issue is to be resolved only during run time as it occurs because of the dynamic nature of the problem. To alleviate the impact of software aging, software rejuvenation technique is being used. Rejuvenation process reboots the system or re-initiates the softwares. This avoids faults or failure. Software rejuvenation removes accumulated error conditions, frees up deadlocks and defragments operating system resources like memory. Hence, it avoids future failures of system that may happen due to software aging. As service availability is crucial, software rejuvenation is to be carried out at defined schedules without disrupting the service. The presence of Software rejuvenation techniques can make software systems more trustworthy. Software designers are using this concept to improve the quality and reliability of the software. Software aging and rejuvenation has generated a lot of research interest in recent years. This work reviews some of the research works related to detection of software aging and identifies research gaps

A Single Case Study of Diabetic Foot Ulcer treated with Vrana Dhoopana and Kshara Picchu

In present scenario due to the sedentary lifestyle, diabetes mellitus has become common disease. Diabetic foot ulcer is a complication of diabetes mellitus which is the leading cause of lower limb amputations. It occurs in 15% of all patient with diabetes mellitus and precedes 84% of patients with diabetic foot ulcer which needs lower leg amputation. The management of diabetic foot ulcer requires blood sugar control, debridement, advanced dressing and offloading modalities. In Ayurvedic literature, Acharya Sushruta has described sixty treatment modalities, He has given more importance to Vranashodhana and Ropana. Acharya Vagbhatta has explained that Vranas which are caused by Madhumeha can be treated with Aragwadhadigana Dravyas, hence in the present study for Vrana Shodhanartha Prakshalana with Aragwadhadi Qwatha and Vrana Dhoopana by Guggulu, Nimba Choorna, Haridra, Jatyadi Ghrita were selected and for Vrana Ropanartha Jatyadi Taila was selected

PHARMACOGNOSTICAL AND PHYTOCHEMICAL EVALUATION OF THE DRUG SAHADEVI (CYANTHILLIUM CINEREUM (L.) H. ROB.)

Sahadevi (Cyanthillium cinereum (L.) H.Rob.) (Family Asteraceae) commonly known as Purple Fleabane in English, Sahadei in Hindi and Poovankurunthila in Malayalam, an erect annual branched herb with pubescent cylindrical stem found as a weed throughout India is extensively used in folkore medicine. The present paper highlights the pharmacognostical and phytochemical characters of the plant to give clear standards for identification of the drug. Microscopic evaluation of root, stem and leaf as well powder microscopy of the plant were carried out. Physicochemical parameters like moisture content, total ash, water insoluble ash, acid insoluble ash, volatile oil content, sugar content, fibre content, alcohol soluble extractive and water soluble extractive were studied. Preliminary phytochemical analysis of the plant Sahadevi [Cyanthillium cinereum (L.) H.Rob.] showed the presence of steroid, flavonoid, glycoside, saponins and tannin. The present study signifies the use of TLC and HPTLC fingerprint profiles of aqueous and alcoholic extracts of the drug for determining the identity, purity of the drug and also for developing standards. The findings drawn from the study substantiates the genuineness of the drug Sahadevi [Cyanthillium cinereum (L.) H.Rob.], which is at par with the descriptions available in the authentic books

Image Enhancement by Histogram Specification Using Multiple Target Images

Shape and characteristics of the histogram plays a major role in finding the quality of an image. Histogram Specification is an image enhancement technique, where the histogram of the input image is transformed to a pre-specified histogram derived from a high resolution image, called target image. In this paper, the classical histogram specification technique is extended by using a target image which is obtained by fusing multiple high resolution images. A set of Quality Metrics were identified to assess the quality of the output enhanced image. The paper addresses the following issues: a) Effect of varying the number of target images on the quality of the output enhanced image b) Role of using different methods of fusion on the quality of the output enhanced image c) Category of the target image on the quality of the output enhanced image. If the input image is from a forest, whether in order to obtain an enhanced image, all target images has to be selected from the forest category d) Effect of preprocessing of target image on the quality of the output enhanced image

Enhancement of Aerial and Medical Image using Multi resolution pyramid

Image enhancement has been an area of active research for decades. Most of the studies are aimed at improving the quality of image for better visualization. An approach for contrast enhancement utilizing multi-scale analysis is introduced. To show the effects of image enhancement, quantitative measures should be introduced. In this paper, we examine the effect of global and local enhancement using multi resolution pyramids. We identify a set of quality metric parameters for comparative performance analysis and use it to assess the enhanced output image for a number of image enhancement algorithms using pyramid

Evaluation of oleaginous bacteria for potential biofuel

The present work was aiming to exploit bacteria for biodiesel prodn., twenty two bacterial isolates were screened for lipid content by Sudan black B staining method, among those three isolates is lipid rich viz, F. oryzihabitans, P. aeruginosa and Morococcus sp. which have been taken for lipid extn. by Bligh and dyer method and thin layer chromatog. for detn. of fatty acid, which revealed that the amt. of lipid was highest in Morococcus sp. (0.68mL​/100mL) of Lauric acid (C12)​. Optimization of C​/N ratio the amt. of lipid was ranged highest in Morococcus sp. i.e. carbon (0.70mL​/100mL) of palmitic acid (C18)​, nitrogen (0.65mL​/100mL) of arachidonic acid (C20) and at pH 7.0 (1.96mL​/100mL) of oleic acid (C18) and in strain improvement by mutagenesis F. oryzihabitans got improved and accumulate high lipid at 10 min (1.50mL​/100mL) of linoleic acid (C16)​

SYNTHESIS AND STRUCTURAL STUDIES OF 1-[(8-NITRONAPHTHO[2,1-B]FURAN-2-YL) CARBONYL] PIPERIDINE

Naphtho [2,1-b] furan-2-carboxyazide has been synthesized from ethyl 8-nitronaphtho [2,1-b] furan-2-carboxylate, by first converting into 8-nitronaphtho [2,1-b] furan-2-carboxyhydrazide , followed by diazotization. The reaction of carboxyazide with piperidine resulted in nucleophilic substitution reaction giving 1- [(8-nitronaphtho [2, 1-b] furan-2-yl) carbonyl] piperidine (NNFCP). The compound has been characterized by FT-IR, 1HNMR, Mass spectral data and X-ray diffraction analysis

No-Load and Load Tests on 3 Phase Induction Motors used in Irrigation Pumping with Balanced and Unbalanced Supply

Agriculture is the major ocupation in villages and is backbone of India, where irrigated agriculture sector plays an important role in economic development and poverty alleviation of the nation. About 75% of present population of India obtains its livelyhood from the same. Iirrigation is harnessing of water resources for the crops by using motor pumps. Usually wells, tanks, perennial canal and multipurpose river valley projects are worked out. As electrical motors are very affordable and cheaper they are the usual choice to drive pumps. Due to the variation in supply to the pump motor the expected performance is not achieved and lead to variation in machine parameters. The operation of 3 phase motor on single phase supply leads to negative effects like overheating, insulation failure, torque pulsation, de rating and reduction in efficiency. In spite of these adverse effects on motor and irrigation power supply feeder, it is observed that farmers run their 3 phase motor on reduced voltage condition using capacitor splitter and other such. A study of operation of 3 phase motor on no-load and load is performed with balanced and unbalanced voltage condition. Simulation is performed in MATLAB/SIMULINK package for the comparison and justification

Co-existence of hypertensive urgency and hemolysis elevated liver enzymes and low platelets syndrome in a parturient with myasthenia gravis: a therapeutic challenge

Hemolysis elevated liver enzymes and low platelets (HELLP syndrome) is an obstetric emergency developed in the settings of hypertensive disorder of pregnancy and it is associated with a heightened risk of adverse fetomaternal outcomes. Obstetric and anaesthetic management is indeed challenging in HELLP syndrome. The presence of myasthenia gravis further complicates the managements issues in these women. Here, in this report, we describe a 35 years G2P1L1 known case of myasthenia gravis, who presented in emergency with uncontrolled hypertension, imminent eclampsia and HELLP syndrome at 29+1 weeks of gestation. Antihypertensive medication included hydralazine, alpha methyldopa, infusions of labetolol and nitroglycerine. She underwent successful vaginal delivery using fentanyl as labour analgesia. Prompt decision making using multidisciplinary team appeared vital in controlling the hypertension adequately and quickly without aggravating myasthenic crisis