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An Approach to Develop Handwritten Signature Verification System Using Genetic Algorithm
Bibhu Prasad Mohanty 한국디지털융합학회 2019 IJICTDC Vol.4 No.2
The fact that signature is widely used means of person authentication emphasizes the need for automatic verification system. This paper presents a new approach for signature verification. The proposed system aims to collect representative and unique features to distinguish between digital signature images. The comparison process between testing signature and the stored signatures is optimized using Genetic Algorithm. Our experimental results give a good balance between False Acceptance Rate (FAR) and False Rejection Rate (FRR).
Habitat heterogeneity and seasonal variations influencing avian community structure in wetlands
Bibhu Prasad Panda,Ashis Kumar Das,Sudheer Kumar Jena,Biswajita Mahapatra,Aditya Kishore Dash,Abanti Pradhan,Siba Prasad Parida 국립중앙과학관 2021 Journal of Asia-Pacific Biodiversity Vol.14 No.1
Birds are considered as ecological indicators and most sensitive health indicators of an ecosystem. Wetlands are used by birds for various purposes such as breeding, nesting, roosting, and foraging. Thisstudy was designed to fulfill this research gap on avian diversity comparison of different wetlands invarious habitats. The objective of the study was to generate information on avian diversity with seasonalvariability of different wetlands of various habitats. Sampling was done in eight different wetlands fromdifferent districts of Odisha. The study was carried out during October 2015 to September 2018, and thepoint count method was used. A total number of 109 species of birds covering 16 order and 42 familieswere recorded. Maximum waterbird richness was found at Chilika (62%, N¼68) and minimum speciesrichness (15%, N¼17) found at Talcher. Six species were recorded under Near Threatened category accordingto International Union for Conservation of Nature (IUCN 2020). The reason behind this occurrenceof more numbers species in Chilika, Hirakud, and Koraput may be because of the habitat suitabilityand low anthropogenic pressure. The Talcher sampling site had the lowest species richness because ofthe highly polluted mining area with high anthropogenic pressure. Conservation of these small wetlandsis also required to conserve the declining native avifauna.
Bibhu Prasad Panda,Saleem Javed,Mohd. Ali 한국생물공학회 2009 Biotechnology and Bioprocess Engineering Vol.14 No.1
Monascus, a fermented rice (red mold rice), was found to reduce total cholesterol and triglyceride in serum due to the presence of lovastatin, a 3-hydroxy-3-methyl glutaryl coenzyme A (HMG-CoA) reductase inhibitor. Optimization and validation of different process parameters such as temperature, fermentation time, inoculum volume, and pH of the solid medium was done using Box-Behnken’s factorial design of response surface method for maximum production of lovastatin by Monascus purpureus MTCC 369. A maximum lovastatin production of 3.422 mg/g was predicted by day 14.43 of fermentation in a rice based solid medium of pH 6 when fermented at a temperature of 29.46℃, an inoculum volume of 5.11 mL, and using response surface plots and the point prediction tool of Design Expert 7.1.3 (Statease Inc., USA) software.
Seasonality and Long-Term Nature of Equity Markets: Empirical Evidence from India
Bibhu Prasad SAHOO,Ankita GULATI,Irfan Ul HAQ 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.4
The research paper endeavors to investigate the presence of seasonal anomalies in the Indian equity market. It also aims to verify the notion that equity markets are for long-term investors. The study employs daily index data of Sensex, Bombay Stock Exchange, to understand its volatility for the period ranging from January 2001 to August 2020. To analyze the seasonal effects in the stock market of India, multiple regression techniques along with descriptive analysis, graphical analysis and various statistical tests are used. The study also employs the rolling returns at different time intervals in order to understand the underlying risks and volatility involved in equity returns. The results from the analysis reveal that daily and monthly seasonality is not present in Sensex returns i.e., investors cannot earn abnormal returns by timing their investment decisions. Hence, the major finding of this study is that the Indian stock market performance is random, and the returns are efficient. The other major conclusion of the research is that the equity returns are profitable in the long run providing investors a hope that they can make gains and compensate for the loss in one period by a superior performance in some other periods.
Ranjan Das, Bibhu,Tangri, Rajiv,Ahmad, Firoz,Roy, Arnab,Patole, Kamlakar Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.12
Recent genome wide sequencing has identified mutations in IDH1/IDH2 predominantly in grade II-III gliomas and secondary glioblastomas which are associated with favorable clinical outcome. These mutations have become molecular markers of significant diagnostic and prognostic relevance in the assessment of human gliomas. In the current study we evaluated IDH1 (R132) and IDH2 (R172) in 32 gliomas of various grades and tumor subtypes. Sequencing analysis revealed R132H mutations in 18.7% tumors, while none of the cases showed IDH2 (R172) mutations. The frequency of IDH1 mutations was higher in females (21.4%) than males (11.1%), and it was significantly higher in younger patients. Histological analyses demonstrated presence of necrosis and micro vascular proliferation in 69% and 75% respectively. Interestingly, IDH1 mutations were predominantly present in non-necrotic tumors as well as in cases showing microvascular proliferation. Of the six IDH1 positive cases, three were glioblastomas (IV), and one each were anaplastic oligoastrocytoma (III), anaplastic oligodendroglioma III (n=1) and diffuse astrocytoma. In conclusion, IDH1 mutations are quite frequent in Indian glioma patients while IDH2 mutations are not observed. Since IDH mutations are associated with good prognosis, their use in routine clinical practice will enable better risk stratification and management of glioma patients.
Chemical surface passivation of silicon nanowires grown by APCVD
Bhabani S. Swain,황농문,Bibhu P. Swain 한국물리학회 2010 Current Applied Physics Vol.10 No.3
Silicon nanowires (SiNWs) are attractive candidate for solar cells and surface passivation has been recognized an important fabrication steps solar cells. The SiNWs were grown on p-type Si (1 0 0) substrate by atmospheric pressure chemical vapour deposition. Field emission scanning electron microscopy, Raman spectroscopy and Fourier transform infrared spectroscopy were used to study the atomic bonding and microstructural aspect of silicon nanowires. Hydrogen and chlorine passivation were carried out by dilute HF and HCl solutions. The transient photoconductance decay and effective lifetime of SiNWs/c-Si were study by microwave photoconductance decay. The effective lifetime of SiNWs/p-Si were observed in between 0.5 and 0.8 μs.
Bhandari, Prerana,Ahmad, Firoz,Mandava, Swarna,Das, Bibhu Ranjan Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.8
Background: Childhood acute lymphoblastic leukemia (ALL) is a heterogeneous genetic disease and its etiology remains poorly understood. Recent genome wide association and replication studies have highlighted specific polymorphisms contributing to childhood ALL predispositions mostly in European populations. It is unclear if these observations generalize to other populations with a lower incidence of ALL. The current case-control study evaluated variants in ARID5B (rs7089424, rs10821936), IKZF1 (rs4132601) and CEBPE (rs2239633) genes, which appear most significantly associated with risk of developing childhood B-lineage ALL. Materials and Methods: Using TaqMan assays, genotyping was conducted for 162 de novo B-lineage ALL cases and 150 unrelated healthy controls in India. Appropriate statistical methods were applied. Results: Genotypic and allelic frequencies differed significantly between cases and controls at IKZF1-rs4132601 (p=0.039, p=0.015) and ARID5B-rs10821936 (p=0.028, p=0.026). Both rs10821936 (p=0.019; OR 0.67; 95% CI=0.47-0.94) and rs4132601 (p=0.018; OR 0.67; 95%CI 0.48-0.94) were associated with reduced disease risk. Moreover, gender-analysis revealed male-specific risk associations for rs10821936 (p=0.041 CT+CC) and rs4132601 (p=0.005 G allele). Further, ARID5B-rs7089424 and CEBPE-rs2239633 showed a trend towards decreased disease risk but without significance (p=0.073; p=0.73). Conclusions: Our findings provide the first evidence that SNPs ARID5B-rs10821936 and IKZF1-rs4132601 are associated with decreased B-lineage ALL susceptibility in Indian children. Understanding the effects of these variants in different ethnic groups is crucial as they may confer different risk of ALL within different populations.
Bhandari, Prerana,Ahmad, Firoz,Dalvi, Rupa,Koppaka, Neeraja,Kokate, Prajakta,Das, Bibhu Ranjan,Mandava, Swarna Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.16
Background: Chromosomal aberrations identified in acute lymphoblastic leukemia (ALL) have an important role in disease diagnosis, prognosis and management. Information on karyotype and associated clinical parameters are essential to physicians for planning cancer control interventions in different geographical regions. Materials and Methods: In this study, we present the overall frequency and distribution patterns of chromosomal aberrations in both children and adult de novo B lineage ALL Indian patients using conventional cytogenetics, interphase FISH and multiplex RT-PCR. Results: Among the 215 subjects, cytogenetic results were achieved in 172 (80%) patients; normal karyotype represented 37.2% and abnormal 62.8% with a distribution as follows: 15.3% hypodiploidy; 10.3% hyperdiploidy; 15.8% t(9;22); 9.8% t(1;19); 3.7% t(12;21); 2.8% t(4;11); 2.8% complex karyotypes. Apart from these, we observed several novel, rare and common chromosomal rearrangements. Also, FISH studies using LSI extra-signal dual-color probes revealed additional structural or numerical changes. Conclusions: These results demonstrate cytogenetic heterogeneity of ALL and confirm that the incidence of chromosomal abnormalities varies considerably. To the best of our knowledge, this is one of the largest reported series of cytogenetic investigations in Indian B-lineage ALL cases. In addition, ongoing cytogenetic studies are warranted in larger groups of B-lineage ALL cases to identify newly acquired chromosomal abnormalities that may contribute to disease diagnosis and management.