183 research outputs found

    A New Method for Solving Fuzzy Linear Programs with Trapezoidal Fuzzy Numbers

    Get PDF
    Ganesan and Veeramani [Fuzzy linear programs with trapezoidal fuzzy numbers, Annals of Operations Research 143 (2006) 305-315.] proposed a new method for solving a special type of fuzzy linear programming problems. In this paper a new method, named as Mehar's method, is proposed for solving the same type of fuzzy linear programming problems and it is shown that it is easy to apply the Mehar's method as compared to the existing method for solving the same type of fuzzy linear programming problems

    Predictability of Morningstar Rating for Future Performance on Canadian Mutual Funds

    Get PDF
    This paper analyzes the predictability of Morningstar Rating for future performance of Canadian equity mutual fund by applying dummy variable regression analysis on three performance metrics - Sharpe Ratio, Jensen’s Alpha, and Two-index Alpha. The examination period is from May 2004 to April 2009. The results show that Morningstar Rating System can predict future performance of Canadian mutual fund. Specifically, the higher rated funds significantly outperform lower rated funds. Similar results are obtained irrespective of the reference group used for the dummy variable regression

    A G-READY model to support subject design for software engineering

    Get PDF
    This paper contributes to Scholarship of Teaching and Learning by proposing a dynamic model to support subject design for Computer Science during the current Coronavirus pandemic. The proposed G-READY model borrows from the greedy algorithm, which can support quick and efficient transition of subject teaching from F2f to online mode and vice versa in the most economical and time efficient manner. This model aims to deliver adaptable, optimized learning experience to students within shortest possible time frame. The paper also offers a support repository of learning and teaching tools that can help the faculty with designing their subjects with minimal effort spent on exploration for resources. This open source repository is aimed to bring efficiency to the process of curating effective learning and teaching resources for computer science teaching and can be extended further. The G-READY model proposes a learning design that is insightful, reflective, dynamic and learning supportive

    Design of Operational Transconductance Amplifier using Double Gate MOSFET

    Get PDF
    Operational Ttransconductance Amplifier is very popular in analog electronics industry due to its vast applications. Analog integrated circuits have been widely used for high frequency applications. OTA has number of applications like filters, analog multipliers and analog dividers. Double gate MOSFETs (DG-MOSFETs) are strong contenders for nano scale region due its better control over short channel effects. DG-MOSFET can be used in analog circuit applications as a four-terminal device. Back gate bias can be used for better tunability. The double gate based circuits provide additional gains in terms of area, power and speed. This paper presents double gate based OTA which has high gain over a wide bandwidth. The simulation results shows gain of 9.32 dB and bandwidth is 7GHz.The simulations are done using Tanner EDA Software Tool at 90nm technology. Keywords: DG MOSFETs, OTA, Analog tunable circuits, Gain, Wide bandwidth, CMOS Process, Double gates, Self cascode techniqu

    PREVALENCE OF NEAR MISS AND MATERNAL DEATHS AND ITS MATERNAL AND PERINATAL OUTCOMES: A RETROSPECTIVE STUDY

    Get PDF
    Objectives: The objective of the study was to determine maternal mortality ratio (MMR), maternal near miss incidence ratio (MNM IR), MNM to mortality ratio (MNM: MD), and mortality index (MI) and to know the prevalence, demographic distribution, causes and feto-maternal outcome of maternal near miss and maternal deaths. Methods: A retrospective review of near miss and maternal mortality over a period of 20 months in a tertiary teaching hospital in Punjab. Results: MMR was 998 MNM IR was 24.20/1000 live births. Maternal near miss mortality ratio was 2.4:1. MI was 29.21%. The most common cause of maternal mortality was hypertension, which was seen in 14 (53.84%) women. Among near miss cases, the most common complication noted was hemorrhage, seen in 40 (63.49%) cases. Among maternal deaths, 7 (26.92%) women delivered vaginally, 6 (23.07%) women underwent emergency cesarean section. Among near miss cases, 20 (31.74%) women delivered vaginally, 13 (20.63%) women underwent cesarean section while 7 (11.11%) had cesarean hysterectomy. Laparotomy for ruptured ectopic pregnancy was done in 6 (9.52%) women, 7 (11.11%) women had dilatation and evacuation, 3 (4.76%) had exploration of Uterovaginal canal. Preterm birth has seen in 8 (12.69%) in maternal deaths and 23(36.50%) in maternal near miss. Intrauterine fetal demise occurred in 4 (6.34%) in maternal deaths and 2 (4.87%) in near miss. Conclusion: The review of near miss cases is important to identify response of health care system to medical emergencies and provides opportunities to improve the quality of service

    Design of Second Order Low Pass and High Pass Filter using Double Gate MOSFET based OTA

    Get PDF
    OTA-C filters are one of the most widely used as continuous time filters. It is because they are fast active integrators, provides low-power operation and tuning of the filter characteristics at higher frequencies. At high frequencies, the OP AMP based active filters has limited performance. We cannot change the values of resistors and inductors but OTA-C filter provides ability to change their values by changing the transconductance of OTA. Second order low and high pass filter structures have widespread applications. The double gate MOSFETs show better performance in the nanometer range of operation. Because it has better control over short channel effects (SCE’s) and other scaling related problems like gate leakage, sub-threshold conduction. Double gate MOSFET is four terminal device and back gate can be used for biasing which can tune the characteristics of circuit. This will provide additional advantage of low power and reduced area. This paper presents second order low pass and high pass filter based on double gate OTA for VHF and UHF frequency applications. The proposed filter consists of two OTAs and two capacitors. This filter shows low sensitivity to passive components, low component count and ease in design.  The simulation results shows pass band frequency of 14MHz and power consumption of 153.4 µwatt. The simulations are done using Tanner EDA version 13.0 at 90nm technology. Keywords: DG MOSFETs; OTA-C; Analog tunable circuits; Gain; Bandwidth; Double gate; Self cascode technique; Low pass filter; High pass filter

    Experience of loneliness on well‑being among young individuals: A systematic scoping review

    Get PDF
    A systematic scoping review was conducted to explore the current evidence on the A systematic scoping review was conducted to explore the current evidence on the experience of loneliness influencing well-being among youths. The electronic databases Scopus, APA PsycINFO, Emerald Insight and One Search were used to identify relevant studies, followed by an analysis of the text words contained in the title and abstract, and of the index terms used to describe the article. Reference lists of all shortlisted articles were searched for additional studies. 20 studies (quantitative, qualitative and mixed) published in the English language were identified for inclusion. Findings illustrate that the experience of loneliness is a complex, evolutionary process influenced by relational and environmental factors. Results from the studies identified factors that promote lower experience of loneliness and better well-being in future life stages. Future research can substantiate the issues related to young individuals being socially isolated from others for a prolonged duration

    Rv1288, a Two Domain, Cell Wall Anchored, Nutrient Stress Inducible Carboxyl-Esterase of Mycobacterium tuberculosis, Modulates Cell Wall Lipid

    Get PDF
    Rv1288, a conserved hypothetical protein of M. tuberculosis (M.tb), was recently characterized as two-domain esterase enzyme by in silico study. In the present study, Rv1288 and its domains (Est and Lyt) were cloned individually from M.tb into E. coli for expression and purification. The purified rRv1288 and rEst proteins exhibited lipolytic activity with medium chain length esters as optimum substrates, while Lyt domain did not show enzymatic activity. However, presence of Lyt domain resulted in enhanced rate of protein aggregation at higher temperature. Both rRv1288 and rEst followed the similar patterns of substrate specificity, temperature and pH activity. Site directed mutagenesis confirmed the Ser-294, Asp-391 and His-425 as catalytic site residues. Rv1288 was found to be present in cell wall fraction of M.tb H37Ra. Peptidoglycan binding activity of Rv1288 and its domains demonstrated that the Lyt domain is essential for anchoring protein to the cell wall. Expression of rv1288 was up regulated in M.tb under nutrient starved condition. Over expression of rv1288 in surrogate host M. smegmatis led to change in colony morphology, enhanced pellicle and aggregate formation that might be linked with the changed lipid composition of bacterial cell wall. Cell wall of M. smegmatis expressing rv1288 had higher amount of lipids, with a significant increase in trehalose dimycolate content. Rv1288 also leads to increase in drug resistance of M. smegmatis. Rv1288 also enhanced the intracellular survival of M. smegmatis in Raw264.7 cell line. Overall, this study suggested that Rv1288, a cell wall localized carboxyl hydrolase with mycolyl-transferase activity, modulated the cell wall lipids to favor the survival of bacteria under stress condition

    Comparison of treatment outcome of transforaminal and caudal epidural steroid injections for radiating low back pain

    Get PDF
    Background: Low back pain is a common disorder. Nearly everyone is affected by it at some time during one’s life time. Corticosteroid injections showed early and moderate but unsustained improvements versus placebo in certain outcomes for lumbar radiculitis. Hence; the present study was undertaken for assessing and comparing the efficacy of transforaminal and caudal epidural steroid injections outcome for the treatment of lumbar radiculitis.Methods: The study was conducted prospectively on 60 patients (30 each) from 20-75 years of age. All the patients were divided into two groups; Group A included patients in which Transforaminal route was used while Group B included patients in which caudal route was used. Pain relief was assessed after the epidural steroid injection using visual analogue scale (VAS) and Oswestry disability index (ODI).Results: Mean VAS and mean ODI score for the patients of Group A was significantly lower in comparison to the patients of group B at post-last injection, 15 days post-last injection, 1-month post-last injection and 3 months post-last injection time interval.Conclusions: Transforaminal approach exhibited superior efficacy and should be performed with increasing frequency. Transforaminal epidural steroid injection also gave better quality of life

    Immobilization and stability studies of a lipase from thermophilic Bacillus sp: The effect of process parameters on immobilization of enzyme

    Get PDF
    A thermostable lipase was partially purified from the culture supernatant of a thermophilic Bacillus sp. The enzyme is optimally active at 60\ub0C and pH 8.0. The enzyme showed enhancement in activity in presence of benzene or hexane (30% v/v each). The activity (assayed by determining the release of pNP from pNP laurate) was stimulated up to 60% of these solvents in enzyme reaction mixture. The catalytic properties of this thermostable enzyme can be further improved via the use of different immobilization techniques and reaction conditions. Enzyme was immobilized on different solid supports and their enzyme activity and stability was compared. The enzyme was adsorbed on silica and HP-20 beads followed by cross-linking with gluteraldehyde on HP-20, which improved the thermostability of enzyme. The optimum pH (pH 8.5) was nearly same for aqueous and immobilized enzyme while optimum temperature was nearly 5\ub0C higher in case of immobilized enzyme. The immobilized/cross linked enzyme was more thermostable at 70 and 80\ub0C in comparison to aqueous and surface adsorbed lipase on silica and HP-20. The optimum temperature for esterification reactions was determined to be 60- 65\ub0C . Half-life of immobilized lipase was nearly 2.5 x higher than the aqueous enzyme at 70\ub0C . Esterification of methanol and oleic acid to methyl oleate by immobilized enzyme was studied in detail
    corecore