26 research outputs found

    Providing Security in Collaborative Data Publishing from Heterogeneity Attack

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    In Collaborative data publishing the data is distributed among multiple data providers or data owners. The main concern of collaborative data publishing is while publishing data preserving the individual’s privacy. While publishing collaborative data to multiple data provider two types of problems are more likely to occur, first is outsider attack and second is insider attack. The attack, which is performed by people who is not data provider, is called as outsider attack. Whereas attack is performed by colluding data provider who may use their own data records to get the data records shared by other data providers, is called as outsider attack. Insider attack is performed by people who are data provider or data owner. In this paper to overcome the problem of such attacks in collaborative data publishing the encryption strategy can be used such as 3DES which provides individual’s data protection by using three keys. Along with MD5 key generation mechanism

    Feasibility Study of Lithium Ion Batteries for Torpedo Applications

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    A comprehensive study on the feasibility of Lithium (Li)-ion battery technology for Light Weight Torpedoes (LWT) and Heavy Weight Torpedoes (HWT) applications are reported in this article. The global scenario of Li-ion battery technology for torpedo applications and current Indigenous Li-ion battery developments in India are studied. Configuration study of Li-ion battery for LWT and HWT with commercial cells was carried out and it is found feasible to partially meet the required power for LWT and HWT applications. A comparison of the cost per cycle of Li-ion battery versus AgO-Zn battery indicates that Li-ion batteries work out to be cheaper beyond 100 cycles of use and by an order of magnitude cheaper on average. The detailed survey on Indigenous developments reveals that cell-level development is predominant in public sector agencies, whereas the private sector is mostly focussed on the assembly of imported cells and BMS

    Performance of admission pathways within acute medicine services: Analysis from the Society for Acute Medicine Benchmarking Audit 2022 and comparison with performance 2019 - 2021

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    Urgent and emergency care services face increasing pressure, impacting patient care. We evaluated the performance of acute medicine services, assessing clinical quality indicators for unplanned medical admissions to acute hospital services. 152 acute UK hospital services accepting unplanned admissions to acute and general internal medicine completed a day-of-care survey incorporating organisational structure questionnaire and patient-level data over a pre-defined 24-hour period in June 2022. Clinical quality indicators were: Early Warning Score (EWS) measurement within 30 min of hospital arrival; clinician assessment within 4 h; assessment by consultant physician within 6 h (daytime) or 14 h (night-time). Results were compared with 2019, 2020, 2021. 7293 sequential patients were included (and compared with 19,817 patients across 2019–2021). In 2022, 69% of patients (95%CI 67.7–69.9%) had an EWS documented within 30 min. 79% of patients (95%CI 77.8–79.7%) were reviewed by a clinical decision maker within 4 h of hospital arrival. Patients assessed in Same Day Emergency Care services were more likely to meet this target than those assessed in Acute Medical Units or Emergency Departments (OR 2.4, 95%CI 2.02–2.87, p<0.001). Overall, 50% of patients received consultant physician review within the target time (3065/6161, 95%CI 48.5–51.0%); performance varied with time of arrival and location of initial assessment. Performance against all three clinical quality indicators was lower than 2019, 2020 and 2021 (p<0.001 for all). Performance against all quality indicators within acute medicine services is deteriorating. However, performance in Same Day Emergency Care Units is greater than in Acute Medical Units or Emergency Departments

    Evaluasi Sistem Informasi Akuntansi Pemberian Kredit pada KUD Karya Mina di Kota Tegal

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    Penelitian ini merupakan evaluasi Sistem Informasi Akuntansi Pemberian Kredit pada Koperasi Unit Desa (KUD) Karya Mina Tegal. Tujuan penelitian ini adalah untuk mengevaluasi kefektifan sistem informasi akuntansi pemberian kredit yang diterapkan pada KUD Karya Mina Tegal. Penelitian ini menggunakan metode deskriptif kualitatif, Yang mempunyai tujuan untuk mengambarkan keadaan yang sebenarnya tentang objek yang diteliti dan untuk mengungkapkan fakta, fenomena, variabel dan keadaan yang terjadi saat penelitian berjalan. Data yang digunakan adalah data primer dan data sekunder.data primer diperoleh dari wawancara, dokumentasi dan observasi, sementara data sekunder diperoleh dari dokumen yang berhubungan dengan penelitian. Hasil dari penelitian menunjukkan bahwa Sistem Informasi akuntansi pemberian kreditnya kurang baik, karena tidak adanya nomor urut di dalam dokumen rangkap dan adanya fungsi account credit yang merangkap tugas sebagai fungsi akuntasi dalam pecatatan penerimaan dan pengeluaran kas

    Brown hemp methyl ester: Transesterification process and evaluation of fuel properties

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    The present study was conducted to standardize the esterification process parameters for the production of methyl ester of raw hemp oil. The effect of process parameters such as molar ratio, catalyst concentration, and reaction time was studied to standardize the esterification process and for estimating the highest recovery of ester with lowest possible viscosity. Based on the observations from the ester recovery and kinematic viscosity, it can be seen that raw hemp oil at 6:1 M ratio may be reacted with methanol at 60 °C reaction temperature for 45 min in the presence of 2 g of KOH and then allowed to settle for 24 h in order to get lowest kinematic viscosity with ester recovery of 90.62%. The yield of hemp methyl ester was found to be 90.62% with oil methanol ratio of 0.37 w/w and 0.01 w/w alkali catalyst. Different fuel properties such as density, kinematic viscosity, flash point, fire point, cloud point, pour point, free fatty acid content and calorific value of the hemp methyl ester and hemp oil were measured. From the properties and engine test results it has been established that methyl ester of hemp oil can be substituted for diesel oil. Methyl ester of above non-edible oil has several advantages among other new renewable and engine fuel alternatives along with its environmental benefits

    Performance and emission evaluation of a diesel engine fueled with methyl ester of neem oil and filtered neem oil

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    62-66 Neem oil methyl ester (NOME) was tested in 4-stroke single cylinder water cooled diesel engine. Brake thermal efficiency of NO100 has been found 63.11% higher than that of diesel at part load whereas it reduces 11.2% with diesel fuel at full load. As NOME is concerned, HC is reduced at all load condition, whereas smoke is also reduced at full load condition. NOx has reduced slightly at all load condition, and EGT showed increasing trend at full load condition. Other emissions (CO, CO2 and O2) do not contribute bad effect on engine. Thus, NOME can be a substitute for diesel fuel in diesel engine. </smarttagtype

    Comparative study of engine performance and exhaust emission characteristics of a single cylinder 4-stroke CI engine operated on the esters of hemp oil and neem oil

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    204-210In this study, the biodiesel produced from selected non-edible oils are prepared by a method of alkaline catalyzed transesterification. Esters of non-edible vegetable oils such as hemp oil and neem oil are potentially effective diesel substitute. The study is carried out to investigate the performance and emission characteristics of selected fuel in a stationary single cylinder, four stroke, naturally aspirated direct injection diesel engine and compare it with mineral diesel. The engine performances (thermal efficiency, brake specific fuel consumption, brake specific energy consumption, and exhaust gas temperature) whereas exhaust emissions (oxides of nitrogen, unburned hydrocarbon and smoke opacity) are evaluated. The experimental results in each case are compared with baseline data of mineral diesel. Significant improvements have been observed in the performance parameters of the engine as well as exhaust emissions. The&nbsp; results show a 45.07% reduction in NOx, 84.42% reduction in HC, 28.35% in smoke but brake thermal efficiency increased slightly (0.19%) at full load for hemp biodiesel, 6.06% reduction in NOx, 2.59% reduction in HC, 18.39% reduction in smoke at full load for neem biodiesel, respectively. The experimental study indicates that selected fuel can be used as a fuel in compression ignition engine without any engine modification

    Optimization of safflower oil transesterification using the Taguchi approach

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    Biodiesel is an alternative renewable fuel which is produced by using biomass resources. Its physicochemical properties are close to those of the petroleum diesel fuel. This study highlights biodiesel production from safflower seed oil. The main aim of this experimental work is to optimize the process parameters, namely the methanol-to-oil molar ratio, catalyst concentration, reaction time and reaction temperature for biodiesel production. The Taguchi robust design approach was used with an L9 orthogonal array to analyze the influence of process factors on performance parameters. The results showed that the optimum yield of biodiesel was 93.8% with viscosity 5.60 cSt, with a methanol-to-oil molar ratio of 4:1, catalyst concentration of 1.5 wt%, reaction time of 90 min and reaction temperature of 60 °C. The catalyst concentration was found to be the most influencing parameter which contributed 51.1% and 50.8% of the total effect on the yield of biodiesel, Y 1, and viscosity of biodiesel, Y 2, respectively

    Optimization of biodiesel production from grape seed oil using Taguchi's orthogonal array​

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    The physicochemical properties of biodiesel are very similar to those of petroleum diesel fuel. The main focus of this study is the production of the biodiesel from grape seed oil. This study shows the optimization of the operation parameters, specifically regarding catalyst concentration, the reaction time, the molar ratio (i.e., methanol-to-oil ratio), and the reaction temperature for the production of biodiesel. The effect of operation factors on performance parameters is analyzed using Taguchi’s orthogonal array. The results depict that 96.90% was the optimum biodiesel yield at a molar ratio 6:1 with a catalyst concentration of 1% by weight and a reaction time of 60 min at 60°C and 4.34 cSt was the optimum biodiesel viscosity at a molar ratio of 6:1 with a catalyst concentration of 0.5% by weight and a reaction time of 75 min at 45°C. The most effective parameter was observed to be catalyst concentration, which conferred 76.39%, and 53.74% of the total influence on the biodiesel yield (Y1) and viscosity (Y2), respectively

    Length of stay in acute medical admissions : analysis from The Society for Acute Medicine benchmarking audit

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    Introduction Medical admissions to hospital represent a diverse range of patients, from those managed on ambulatory pathways through Same Day Emergency Care (SDEC) services, to those requiring prolonged inpatient admission. An understanding of current patterns of admission through acute medicine services and patient factors associated with longer hospital admission is needed to guide service planning and improvement. Methods Data from the Society for Acute Medicine Benchmarking Audit (SAMBA) 2021 were analysed. Patients admitted to acute medicine services during a 24-hour period on 17th June 2021 were included, with data recording patient demographics, frailty score, acuity and follow-up of outcomes after seven days. Results 8101 unplanned medical admissions were included, from 156 hospitals. 31.6% were discharged without overnight admission; the median hospital performance was 30.1% (IQR 19.3-39.3%). 22.1% of patients remained in hospital for more than 7 days. Those remaining in hospital for more than 48 hours and for more than seven days were more likely to be aged over 70, to be frail, or to have a NEWS2 of 3 or more on arrival to hospital. Conclusion The proportion of acute medical attendances receiving overnight admission varies between hospitals. Length of stay is impacted by patient factors and illness acuity. Strategies to reduce inpatient service pressures must ensure effective care for older patients and those with frailty
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