Performance Isolation in Cloud Storage Systems

Cloud computing enables data centres to provide resource sharing across multiple tenants. This sharing, however, usually comes at a cost in the form of reduced isolation between tenants, which can lead to inconsistent and unpredictable performance. This variability in performance becomes an impediment for clients whose services rely on consistent, responsive performance in cloud environments. The problem is exacerbated for applications that rely on cloud storage systems as performance in these systems is a ffected by disk access times, which often dominate overall request service times for these types of data services. In this thesis we introduce MicroFuge, a new distributed caching and scheduling middleware that provides performance isolation for cloud storage systems. To provide performance isolation, MicroFuge's cache eviction policy is tenant and deadline-aware, which enables the provision of isolation to tenants and ensures that data for queries with more urgent deadlines, which are most likely to be a ffected by competing requests, are less likely to be evicted than data for other queries. MicroFuge also provides simplifi ed, intelligent scheduling in addition to request admission control whose performance model of the underlying storage system will reject requests with deadlines that are unlikely to be satisfi ed. The middleware approach of MicroFuge makes it unique among other systems which provide performance isolation in cloud storage systems. Rather than providing performance isolation for some particular cloud storage system, MicroFuge can be deployed on top of any already deployed storage system without modifying it. Keeping in mind the wide spectrum of cloud storage systems available today, such an approach make MicroFuge very adoptable. In this thesis, we show that MicroFuge can provide signifi cantly better performance isolation between tenants with di fferent latency requirements than Memcached, and with admission control enabled, can ensure that more than certain percentage of requests meet their deadlines

EVALUATION OF QOS (QUALITY OF SERVICES) BY LOG FRAME ANALYSIS (LFA) AND OCULAR MORBIDITY IN SCHOOL CHILDREN OF CHANDIGARH

Objective: To evaluate the school vision health program being run by the Chandigarh administration for students, under National Program for Control of Blindness.- To assess the visual acuity disorders in them.Methods: The population based cross sectional study was done in fourteen schools of Chandigarh. Chandigarh was divided in four quarters. Sampling frame comprised of Government schools. The eye component of a school health program so run in government schools, by Chandigarh administration was evaluated by LFA. Data analysis was carried out using SPSS13 and Epi Info 2000.Results: A total of 5404 children were studied, out of which 2801(51.83%) were boys and 2603(48.16%) were girls. Girls in our study showed a higher prevalence of defective visual acuity among girls 322(5.95%). Female preponderance was observed in all age groups.Evaluation of school health program showed that 51(36%) subjects were of the opinion that all students were examined, 25 (17.86%) told that more than 20% of students were referred to GMCH-32 for further management. All the interviewers agreed that manpower in school health team was adequate.Conclusion: Low compliance with ocular morbidity was evident as less number of students contacted the eye health physician even after being referred. There is a need to spread awareness pertaining to eye health that can be using local media or by health care workers. More over emphasis has not only to be on therapeutic aspect but prevention too has to be given importance.Keywords: Log frame analysis, Ocular morbidity.Â

EVALUATION OF QOS (QUALITY OF SERVICES) BY LOG FRAME ANALYSIS (LFA) AND OCULAR MORBIDITY IN SCHOOL CHILDREN OF CHANDIGARH

Objective: To evaluate the school vision health program being run by the Chandigarh administration for students, under National Program for Control of Blindness. - To assess the visual acuity disorders in them. Methods: The population based cross sectional study was done in fourteen schools of Chandigarh. Chandigarh was divided in four quarters. Sampling frame comprised of Government schools. The eye component of a school health program so run in government schools, by Chandigarh administration was evaluated by LFA. Data analysis was carried out using SPSS13 and Epi Info 2000. Results: A total of 5404 children were studied, out of which 2801(51.83%) were boys and 2603(48.16%) were girls. Girls in our study showed a higher prevalence of defective visual acuity among girls 322(5.95%). Female preponderance was observed in all age groups. Evaluation of school health program showed that 51(36%) subjects were of the opinion that all students were examined, 25 (17.86%) told that more than 20% of students were referred to GMCH-32 for further management. All the interviewers agreed that manpower in school health team was adequate. Conclusion: Low compliance with ocular morbidity was evident as less number of students contacted the eye health physician even after being referred. There is a need to spread awareness pertaining to eye health that can be using local media or by health care workers. More over emphasis has not only to be on therapeutic aspect but prevention too has to be given importance

Phyto-adsorption treatment of paper mill effluent using leaf powder of water hyacinth (Eichhornia crassipes [Mart.] Solms

In this present study, an experiment was performed to find the potential of leaf powder of water hyacinth (Eichhornia crassipes) in treating paper mill effluent. During the study the value of different parameters viz., pH (5.80±0.10), TDS (980.22±12.52 mgL-1), EC (6.52±0.11 dS m-1), BOD (86.42±4.61 mgL-1), COD (281.01±8.66 mgL-1), PO43- (71.46±6.00 mgL-1), TKN (84.99±3.92 mgL-1), Na (136.94±6.66 mgL-1), K (95.01±3.48 mgL-1) and total hardness (442.39±3.78 mgL-1) of paper mill effluent were recorded higher before bio-adsorption treatment using leaf powder of E. crassipes. The leaf powder of E. crassipes significantly (P<0.05/P<0.01) removed TDS, EC, BOD, COD, TKN, Na, K and total hardness of the paper mill effluent. The result of the present study on the  bio-adsorption treatment using leaf powder of E. crassipes of paper mill effluent showed maximum reduction in the effluent characteristics viz., pH (6.62±0.08), TDS (848.42±7.67 mgL-1), EC (4.08±0.17 dS m-1), BOD (62.56±3.39 mgL-1), COD (218.11±8.59 mgL-1), PO43- (50.13±4.33 mgL-1), TKN (63.04±6.47 mgL-1), Na (100.06±6.99 mgL-1), K (66.00±7.38 mgL-1) and total hardness (347±9.86 mgL-1) of paper mill effluent after bio-adsorption treatment using leaf powder of E. crassipes. The maximum removal of TDS (13.45%), EC (37.43%), BOD (25.89%), COD (22.38%), PO43- (29.85%), TKN (25.83%), Na (26.94%), K (30.54%) and Total hardness (21.56%) in the paper mill effluent were recovered after phyto-adsorption treatment using leaf powder of E. crassipes. The decrease of paper mill effluent parameter is likely due to that the leaf powder of water hyacinth absorbs the nutrient from the effluent. Therefore, the leaf powder of can be used as phyto-adsorbent for the removal of various pollution parameters

Image and Information Fusion Experiments with a Software-Defined Multi-Spectral Imaging System for Aviation and Marine Sensor Networks

The availability of Internet, line-of-sight and satellite identification and surveillance information as well as low-power, low-cost embedded systems-on-a-chip and a wide range of visible to long-wave infrared cameras prompted Embry Riddle Aeronautical University to collaborate with the University of Alaska Arctic Domain Awareness Center (ADAC) in summer 2016 to prototype a camera system we call the SDMSI (Software-Defined Multi-spectral Imager). The concept for the camera system from the start has been to build a sensor node that is drop-in-place for simple roof, marine, pole-mount, or buoy-mounts. After several years of component testing, the integrated SDMSI is now being tested, first on a roof-mount at Embry Riddle Prescott. The roof-mount testing demonstrates simple installation for the high spatial, temporal and spectral resolution SDMSI. The goal is to define and develop software and systems technology to complement satellite remote sensing and human monitoring of key resources such as drones, aircraft and marine vessels in and around airports, roadways, marine ports and other critical infrastructure. The SDMSI was installed at Embry Riddle Prescott in fall 2016 and continuous recording of long-wave infrared and visible images have been assessed manually and compared to salient object detection to automatically record only frames containing objects of interest (e.g. aircraft and drones). It is imagined that ultimately users of the SDMSI can pair with it via wireless to browse salient images. Further, both ADS-B (Automatic Dependent Surveillance-Broadcast) and S-AIS (Satellite Automatic Identification System) data are envisioned to be used by the SDMSI to form expectations for observing in future tests. This paper presents the preliminary results of several experiments and compares human review with smart image processing in terms of the receiver-operator characteristic. The system design and software are open architecture, such that other researchers are encouraged to construct and participate in sharing results and networking identical or improved versions of the SDMSI for safety, security and drop-in-place scientific image sensor networking

Fabrication, Testing and Machining of Hybrid Basalt-Glass Fiber Reinforced Plastic composite

In modern industries, basalt and glass are the most commonly used fibers for the fabrication of various engineering components. Present work is focused on the fabrication of hybrid fiber reinforced plastic (FRP) composites, comprises of basalt and glass fibers. The aim of the work is to fabricate a composite justifying the current requirement of the era followed by the identification of the capabilities of fabricated composite by investigating its mechanical properties. Further, the machining of the fabricated composite has also been explored in order to limit the common problems in machining like fiber pull-out and delamination. From the results, it has been perceived that the fabricated composite can be machined flawlessly using laser beam machine subjected to the selection of input parameters. The proposed methodology seems helpful for researchers in fabricating the FRP composite and in identifying the range of input parameters suitable for machining

Fabrication, Testing and Machining of Hybrid Basalt-Glass Fiber Reinforced Plastic composite

258-262In modern industries, basalt and glass are the most commonly used fibers for the fabrication of various engineering components. Present work is focused on the fabrication of hybrid fiber reinforced plastic (FRP) composites, comprises of basalt and glass fibers. The aim of the work is to fabricate a composite justifying the current requirement of the era followed by the identification of the capabilities of fabricated composite by investigating its mechanical properties. Further, the machining of the fabricated composite has also been explored in order to limit the common problems in machining like fiber pull-out and delamination. From the results, it has been perceived that the fabricated composite can be machined flawlessly using laser beam machine subjected to the selection of input parameters. The proposed methodology seems helpful for researchers in fabricating the FRP composite and in identifying the range of input parameters suitable for machining

Liebetanzomyces polymorphus gen. et sp. nov., a new anaerobic fungus (Neocallimastigomycota) isolated from the rumen of a goat

An extended incubation strategy to culture slow growing members of anaerobic fungi resulted in the isolation of a novel anaerobic fungus from the rumen of a goat after 15 days. The novel genus, represented by type strain G1SC, showed filamentous monocentric thallus development and produced uniflagellate zoospores, hence, showing morphological similarity to the genera Piromyces, Buwchfawromyces, Oontomyces and Pecoramyces. However, strain G1SC showed genetic similarity to the genus Anaeromyces, which, though produces uniflagellate zoospore, also exhibits polycentric thallus development. Moreover, unlike Anaeromyces, strain G1SC did not show hyphal constrictions, instead produced a branched, determinate and anucleate rhizoidal system. This fungus also displayed extensive sporangial variations, both exogenous and endogenous type of development, short and long sporangiophores and produced septate sporangia. G1SC utilised various complex and simple substrates, including rice straw and wheat straw and produced H2, CO2, formate, acetate, lactate, succinate and ethanol. Phylogenetic analysis, using internal transcribed spacer 1 (ITS1) and D1/D2 domain of large-subunit (LSU) rRNA locus, clearly showed a separate lineage for this strain, near Anaeromyces. The ITS1 based geographical distribution studies indicated detection of environmental sequences similar (93–96%) to this strain from cattle faeces. Based on morphological and molecular characterisation results of strain G1SC, we propose a novel anaerobic fungus Liebetanzomyces polymorphus gen. et sp. nov., in the phylum Neocallimastigomycota