Papers by Dilip Kumar Yadav
International Journal of Advanced Research in Computer Science, 2017
Though there are many studies on the topological properties of rough set approximations, only a f... more Though there are many studies on the topological properties of rough set approximations, only a few works have been done on the concept of rough topology. In this paper, a new definition of rough topology on an approximation space is proposed using the rough subsets of the extended approximation space. The basic concepts of a topological space are extended to the proposed rough topological space and the properties are investigated.
International journal of performability engineering, Jul 1, 2012
This paper presents a model to predict the number of residual defects before testing phase. The d... more This paper presents a model to predict the number of residual defects before testing phase. The developers need this information a priori for optimal testing resource planning and quality assessment of the software being developed. In the early stages of software development life cycle (SDLC), software residual defects are affected by both product and process characteristics of the project. These product and process characteristics are embedded in software metrics which have subjective assessments in the early stages of SDLC. Therefore, software metrics are considered for developing the model for early software defects prediction. This paper uses the software size metric and three metrics of requirement analysis phase for predicting the residual defects that are likely to be found during testing or operational usage using fuzzy logic. The predictive capability of the proposed approach is examined using qualitative data of requirement metrics of twenty real software projects and results are compared with the existing model.
Stress Pattern of NW Himalaya: Stress Coupling Between Higher Himalaya and South Tibetan Plateau
ABSTRACT ABSTRACT The Stress patterns of different seismic regimes of the Northwest Himalaya are ... more ABSTRACT ABSTRACT The Stress patterns of different seismic regimes of the Northwest Himalaya are investigated based on focal mechanisms of regional earthquakes of magnitudes > 3.0 The study shows thrust faulting in Kangra-Chamba and Garhwal-Kumaon region and normal faulting in Kinnour and northeast corner of Kumaon region. Pressure and tension axes are determined from the fault plane solutions and are projected on the tectonic map to evaluate the linkage of stress pattern with tectonic elements. Most of the P-axes orientations are aligned toward northeast with their nodal planes along NW-SE direction showing conformity with ongoing stress and the trend of major thrust/lineaments. In contrast, the inferred fault planes of normal faulting mechanisms observed at Kinnour and northeast corner of Kumaon regions are trending along N-S direction with T-axes along E-W direction. This indicates the effect of E-W extension in these two regions which is the part of South Tibetan Detachment (STD) zone. The stress tensor inversion study shows compressional stress regime for the Kangra-Chamba and the Garhwal-Kumaon regions and extensional regime for Kinnaur region and the NE corner of Kumaon region.
2-Terminal Reliability Analysis of Single Fault-Tolerant Multistage Interconnection Networks
Algorithms for Intelligent Systems, 2020
Multistage interconnection network is a communication channel in the multiprocessor systems used ... more Multistage interconnection network is a communication channel in the multiprocessor systems used to interconnect number of processing elements and memory components. Multistage interconnection networks are the substitute of costly crossbars used earlier in parallel computers. In this paper, 2-terminal reliability is evaluated for multistage interconnection networks with an assumption that the fault occurs independently, links of the network are reliable, switches are either working or failed, and routing through alternative paths using path sets method is based on the reliability block diagram. 2-Terminal reliability i.e., the probability of actual data transmission from source-to-destination node pair. Performance of multistage interconnection networks is evaluated based on 2-terminal reliability, network complexity, fault-tolerance, and hardware cost.
World Academy of Science, Engineering and Technology, International Journal of Medical and Health Sciences, 2014
Autism Spectrum Disorders (ASD) are often accompanied by atypical visual, auditory, and tactile s... more Autism Spectrum Disorders (ASD) are often accompanied by atypical visual, auditory, and tactile sensory behavior. Evidence also suggests alterations of the olfactory system, but the pattern of findings appears mixed. To quantify this pattern systematically, we conducted a meta-analysis. Studies were included if they examined olfactory function (i.e., odor threshold, or odor identification) in ASD compared with healthy age-matched control groups. We also coded for the potential moderators gender, age, and IQ. Articles were identified through computerized literature search using Web of Science, PubMed, and Scopus databases. A total of 11 articles compared odor threshold and/or odor identification between cases and controls (for threshold, n = 143 ASD and 148 controls; and for identification, n = 132 ASD and 139 controls). Effects sizes showed a substantial heterogeneity. As a result, the 95% prediction intervals were wide and ranged between a large negative and a large positive effect size for odor threshold, [−1.86, 2.05], and for odor identification, [−1.51, 2.52]. Exploratory analyses suggested that age and IQ may be potential moderators. To conclude, the large heterogeneity is consistent with the notion of both hyposensitivity and hypersensitivity in individuals with ASD. However, future research needs to predict and test the specific direction of the effect to provide convincing evidence for atypical olfactory functions in ASD.
Software Test Case Allocation
To allocate optimal number of test cases among functions in order to reduce the expected loss of ... more To allocate optimal number of test cases among functions in order to reduce the expected loss of resources like time, cost etc., and a method has been proposed in this paper. Test cases play an important role in software testing. Allocation of test cases should be done according to the function’s significance. There can be many engineering and non-engineering attributes which can provide assumption for function’s priority for test case allocation. In this paper, complexity, cost, criticality, and occurrence probability are taken into consideration for optimal test case allocation problem. Previously, test case allocation was performed only using occurrence probability and criticality. We present a new method to allocate number of test cases among various software operations, by fixing total number of test cases. Proportionality factor in terms of failure probability is derived based on the above-identified allocation factors. Fuzzy numbers are used to represent allocation factors. C...
Defects Prediction of Early Phases of Software Development Life Cycle using Fuzzy Logic
Confluence 2013: The Next Generation Information Technology Summit (4th International Conference), 2013
ABSTRACT In this paper, a model is proposed to predict the software defects indicator of early ph... more ABSTRACT In this paper, a model is proposed to predict the software defects indicator of early phases of Software Development Life Cycle (SDLC) using the top most reliability relevant metrics at each artifacts. Failure data is not available in the early phases of SDLC. Therefore, qualitative values of software metrics are used in this model. Defect indicator predicted in the Requirement analysis, Design and Coding phases are very helpful for testing and maintenance of the software. Requirement analysis phase defect indicator value is relatively greater than that of the design and coding artifacts. Model is validated with the existing literature. Validation results are satisfactory.
Enhancement of Region of Interest from a Single Backlit Image with Multiple Features
Communications in Computer and Information Science, 2021
Comparison of MPPT Algorithms in Stand-Alone Photovoltaic (PV) System on Resistive Load
Comparison of MPPT Algorithms in Stand-Alone Photovoltaic (PV) System on Resistive Load
The Shoulder Girdle and Thorax: Clavicle, Scapula, Ribs, and Sternum
Study on Crustal Structure Beneath Arunachal Himalaya and Assam
A study of travel times for Pg, P* and Pn waves is conducted for the three profiles along the Mai... more A study of travel times for Pg, P* and Pn waves is conducted for the three profiles along the Main Central Thrust (MCT) and Main Boundary Fault (MBF) in the Arunachal Himalaya and the Brahmaputra Lineament (BPL) in Assam, in order to obtain seismic velocities and the thicknesses of the upper and lower crust and the depth to Moho. These profiles roughly pass through the locations of seismic stations and the epicentres of the earthquakes used in this study. 143 earthquakes with magnitudes 2 to 5.5 and depths of 10 to 20 km during the period 1985-1997 were used to carry out the study. Velocities 6.01±0.15,6.57±0.13, 8.31±0.07 km/sec along the MCT, 6.0±0.1,6.54±0.13 and 8.24±0.14 km lsec along the MBF and 5.90±0.04,6.37±0.08 and 8.01±0.07 km/sec along the BPL for Pg, P* and Pn waves were obtained. The corresponding thicknesses of upper and lower crust are 28±1.6, 23.8±0.2 km for the MCT; 25.1±1.4, 23.8±0.2 km for the MBF and 21.5±1.5,23.8±0.2 km along the BPL (Fig. 2). A 6.5 krn thicken...
Secure and Robust Blind Watermarking of Digital Images Using Logistic Map
Advances in the digital media ease the users to transmit/share digital data in the form of audio ... more Advances in the digital media ease the users to transmit/share digital data in the form of audio files, digital images and digital videos. However, the risk involved in such transmission or sharing is also increasing. The necessity to protect the copyrights of digital data and thereby identification of the owner is essential. Digital watermarking is the best solution for ownership identification and copyright protection. This paper proposes a novel blind watermarking approach based on logistic map. The watermark is embedded into a cover image using singular value decomposition (SVD). The experimental results and comparative analysis prove the efficacy of our method. For objective evaluation, peak signal to noise ratio (PSNR) and normalized cross-correlation (NCC) have been used to estimate the imperceptibility and robustness of our watermarking process.
International Journal of Medicine and Pharmaceutical Sciences, 2018
Child health has been recognized as fundamental right of every child since long time. Child morta... more Child health has been recognized as fundamental right of every child since long time. Child mortality is regarded as an import indicator of the health status of a community, effectiveness of the services and level of living of people. Substantial progress has been made towards achieving MDG target related to child health but still, significant numbers of children are dying every day due to preventable causes such as improper or harmful practices, infection, vaccine preventable diseases and malnutrition; mostly in developing countries and in rural setting due to unavailability and/or poor quality child health services. Due to lack of awareness and other socio-cultural factors, available health services are not also utilized properly. The objective of this paper was to review relevant literatures to describe the gaps regarding child health policy, program and services delivered in Nepal. This paper built on review of relevant literatures published in between 1990 and 2017. Very few published studies reporting child health policy, program and gaps in Nepal were found. The study included policy, program, strategy, guidelines, annual reports published by government of Nepal, National and International Organizations. The review revealed that child health has been on topmost priority in Nepal since 1990 and it has been getting priority agenda in several policy papers. Progressive improvement in child health has been observed in between 1990 and 2017.During the period, Neonatal Mortality, Infant Mortality and child Mortality have been reduced by 58, 59 and 67 percent respectively and are on the track according to MDG target but achieving the further national and international policy targets (SDG) within the specified timeframe are still challenging especially neonatal health related targets. More efforts are needed to sustain the current achievement and make further progress on child health.
EAI Endorsed Transactions on Pervasive Health and Technology, 2018
INTRODUCTION: The e-health (electronic health) system is one of many cloud services which uses co... more INTRODUCTION: The e-health (electronic health) system is one of many cloud services which uses computer or electronic systems and cloud technology as its main source of operations for storing and sharing patient's medical data between healthcare service providers and patients. The health data records are kept in a semi-trusted third-party supplier (i.e., cloud). Therefore, its security has become the main concern as the data should not be accessible to unauthorized person. OBJECTIVES: To provide a brief knowledge on the security aspects of cloud-based e-health systems for further improvement in the field of e-health system security. METHODS: This paper presents a literature survey on secure cloud-based e-health systems including ninety-four research papers related to secure cloud-based e-health systems collected from different sources till 2019. RESULTS: The security mechanisms used to secure cloud-based e-health systems are divided into three categories (i.e., crypto, non-crypto, and biometric-based). Also some health related security laws, security mechanisms, advantages and limitations of security mechanisms for all categories are presented. CONCLUSION: This paper will be helpful to do further researches in the research area of e-health system as it consists of the analysis of security mechanisms, security laws, advantages and limitations of the security mechanisms.
BMC Nutrition, 2017
Background: Animal studies have shown that nutritional exposures during pregnancy can modify epig... more Background: Animal studies have shown that nutritional exposures during pregnancy can modify epigenetic marks regulating fetal development and susceptibility to later disease, providing a plausible mechanism to explain the developmental origins of health and disease. Human observational studies have shown that maternal peri-conceptional diet predicts DNA methylation in offspring. However, a causal pathway from maternal diet, through changes in DNA methylation, to later health outcomes has yet to be established. The EMPHASIS study (Epigenetic Mechanisms linking Pre-conceptional nutrition and Health Assessed in India and Sub-Saharan Africa, ISRCTN14266771) will investigate epigenetically mediated links between peri-conceptional nutrition and health-related outcomes in children whose mothers participated in two randomized controlled trials of micronutrient supplementation before and during pregnancy. Methods: The original trials were the Mumbai Maternal Nutrition Project (MMNP, ISRCTN62811278) in which Indian women were offered a daily snack made from micronutrient-rich foods or low-micronutrient foods (controls), and the Peri-conceptional Multiple Micronutrient Supplementation Trial (PMMST, ISRCTN13687662) in rural Gambia, in which women were offered a daily multiple micronutrient (UNIMMAP) tablet or placebo. In the EMPHASIS study, DNA methylation will be analysed in the children of these women (~1100 children aged 5-7 y in MMNP and 298 children aged 7-9 y in PMMST). Cohort-specific and cross-cohort effects will be explored. Differences in DNA methylation between allocation groups will be identified using the Illumina Infinium MethylationEPIC array, and by pyrosequencing top hits and selected candidate loci. Associations will be analysed between DNA methylation and health-related phenotypic outcomes, including size at birth, and children's post-natal growth, body composition, skeletal development, cardio-metabolic risk markers (blood pressure, serum lipids, plasma glucose and insulin) and cognitive function. Pathways analysis will be used to test for enrichment of nutrition-sensitive loci in biological pathways. Causal mechanisms for nutrition-methylation-phenotype associations will be explored using Mendelian Randomization. Associations between methylation unrelated to supplementation and phenotypes will also be analysed.
Journal of The Electrochemical Society, 2018
We compare two experimental approaches for measuring the cation transference number in mixtures o... more We compare two experimental approaches for measuring the cation transference number in mixtures of polyethylene oxide (PEO) and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) salt: the well-established currentinterrupt method proposed by Ma et al., 1 and a more recent method based on measuring the steady-state current proposed by Balsara and Newman. 2 In electrolytes comprised of high molecular weight PEO, the data from the two techniques agree, highlighting the equivalence of these two approaches. However, in lower molecular weight PEO electrolytes the values of the two approaches diverge at low salt concentrations. We posit this is because the approach of Ma et al. requires measurements that are sensitive to the nature of the interface between the electrolyte and the electrode. The transference numbers measured by the approach of Balsara and Newman for both low and high molecular weight samples vary from 0.7 to-0.8 and are within experimental error throughout the entire salt concentration window.
PLOS Genetics, 2018
S-adenosylmethionine (SAM) is a donor which provides the methyl groups for histone or nucleic aci... more S-adenosylmethionine (SAM) is a donor which provides the methyl groups for histone or nucleic acid modification and phosphatidylcholine production. SAM is hypothesized to link metabolism and chromatin modification, however, its role in acute gene regulation is poorly understood. We recently found that Caenorhabditis elegans with reduced SAM had deficiencies in H3K4 trimethylation (H3K4me3) at pathogen-response genes, decreasing their expression and limiting pathogen resistance. We hypothesized that SAM may be generally required for stress-responsive transcription. Here, using genetic assays, we show that transcriptional responses to bacterial or xenotoxic stress fail in C. elegans with low SAM, but that expression of heat shock genes are unaffected. We also found that two H3K4 methyltransferases, set-2/SET1 and set-16/MLL, had differential responses to survival during stress. set-2/SET1 is specifically required in bacterial responses, whereas set-16/MLL is universally required. These results define a role for SAM in the acute stress-responsive gene expression. Finally, we find that modification of metabolic gene expression correlates with enhanced survival during stress.
International journal of epidemiology, Jan 17, 2018
Mounting evidence suggests that nutritional exposures during pregnancy influence the fetal epigen... more Mounting evidence suggests that nutritional exposures during pregnancy influence the fetal epigenome, and that these epigenetic changes can persist postnatally, with implications for disease risk across the life course. We review human intergenerational studies using a three-part search strategy. Search 1 investigates associations between preconceptional or pregnancy nutritional exposures, focusing on one-carbon metabolism, and offspring DNA methylation. Search 2 considers associations between offspring DNA methylation at genes found in the first search and growth-related, cardiometabolic and cognitive outcomes. Search 3 isolates those studies explicitly linking maternal nutritional exposure to offspring phenotype via DNA methylation. Finally, we compile all candidate genes and regions of interest identified in the searches and describe their genomic locations, annotations and coverage on the Illumina Infinium Methylation beadchip arrays. We summarize findings from the 34 studies fo...
International Journal of Advanced Intelligence Paradigms, 2017
The most important and crucial activity to develop good quality software is software testing. The... more The most important and crucial activity to develop good quality software is software testing. The most important activity in software testing is to find optimal test suite in input domain to satisfy a certain test adequacy criteria. So to develop an efficient approach to generate test data is a prime issue in software testing. This paper proposes a novel approach to generate test data automatically for data flow testing based on hybrid adaptive PSO-GA algorithm. The hybrid APSO-GA is developed to conquer the weakness of GA and PSO algorithms, especially in data flow testing. A new fitness function is also designed on the basis of the concept of dominance relations, branch weight and branch distance to guide the search direction more efficiently. The efficiency of proposed approach is then tested on ten benchmark programs and four real world programs. The proposed approach is then compared with GA, PSO, ACO, DE and hybrid GA-PSO on the basis of two performance parameters, average number of generations and average coverage achieved. The results show that hybrid adaptive PSO-GA gives better results as compared to other algorithms that are used in the field of test data generation.
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Papers by Dilip Kumar Yadav