Itanagar, India

Rajiv Gandhi University
Itanagar, India

Rajiv Gandhi University earlier known as Arunachal University, established in 1984, is the oldest university in the Indian state of Arunachal Pradesh. The foundation stone for the university was laid by the then Prime Minister of India Late Smt. Indira Gandhi. Before the inception of Rajiv Gandhi University, colleges of Arunachal Pradesh were affiliated to North Eastern Hill University, Shillong. At present seven government degree colleges are affiliated to Rajiv Gandhi University, namely, Jawaharlal Nehru College , Dera Natung Government College , Indira Gandhi Government College , Government College , Donyi-Polo Government College, Kamki, Rang-Frah Government College, , Wangcha Rajkumar Government College, , and Govt. College . The university has been extending educational facilities to the students from the neighbouring states particularly Assam. Wikipedia.

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Hazarika B.,Rajiv Gandhi University
Journal of Intelligent and Fuzzy Systems | Year: 2017

In this paper we introduce the concepts of ideal convergence, pointwise ideal convergence, and uniformly ideal convergence of sequences of fuzzy valued functions based on the concept of convergence of sequences of fuzzy numbers and obtain the relationship among pointwise ideal convergence and uniformly ideal convergence of sequences of fuzzy valued functions, and study their representations of sequences of α-level cuts. © 2017 IOS Press and the authors. All rights reserved.

Odelu V.,Rajiv Gandhi University | Das A.K.,International Institute of Information Technology, Hyderabad | Goswami A.,Indian Institute of Technology Kharagpur
Information Sciences | Year: 2014

Lo et al. (2011) proposed an efficient key assignment scheme for access control in a large leaf class hierarchy where the alternations in leaf classes are more frequent than in non-leaf classes in the hierarchy. Their scheme is based on the public-key cryptosystem and hash function where operations like modular exponentiations are very much costly compared to symmetric-key encryptions and decryptions, and hash computations. Their scheme performs better than the previously proposed schemes. However, in this paper, we show that Lo et al.'s scheme fails to preserve the forward security property where a security class Cx can also derive the secret keys of its successor classes Cj's even after deleting the security class Cx from the hierarchy. We aim to propose a new key management scheme for dynamic access control in a large leaf class hierarchy, which makes use of symmetric-key cryptosystem and one-way hash function. We show that our scheme requires significantly less storage and computational overheads as compared to Lo et al.'s scheme and other related schemes. Through the informal and formal security analysis, we further show that our scheme is secure against all possible attacks including the forward security. In addition, our scheme supports efficiently dynamic access control problems compared to Lo et al.'s scheme and other related schemes. Thus, higher security along with low storage and computational costs make our scheme more suitable for practical applications compared to other schemes. © 2013 Elsevier Inc. All rights reserved.

Rahman S.,Rajiv Gandhi University
Information Sciences | Year: 2016

A new approach to t-norm and t-conorm based α-cuts of intuitionistic fuzzy sets is studied. Strong and weak cuts for intuitionistic fuzzy sets are defined, and their various properties are investigated. We show that strong cuts contained in the average cuts and average cuts contained in the weak cuts and it is also observed that for some special cases, average cuts are same. We investigate the strong, weak, and average cut sets of intuitionistic fuzzy sets under the fuzzy sets operations: finite (infinite) intersection and union with respect to fuzzy connectives. Some relevant counter examples are indicated. © 2016 Elsevier Inc. All rights reserved.

Shukla R.K.,Rajiv Gandhi University
Future oncology (London, England) | Year: 2013

To provide therapeutic alternatives to intravenous colon chemotherapy major recent research is focusing on the development of oral chemotherapeutic agents with the intention to improve the quality of life of patients. Initially 5-fluorouracil was most commonly used for the treatment of colorectal cancer but currently oxaliplatin and irinotecan are also available. The majority of these new drugs are pyrimidines and their analogs. The rationale for using oral anticancer agents is discussed and new drugs, such as farnesyl protein transferase inhibitor S-1, rubitecan, ZD9331, MMI-166, eflornithine, sulindac, and oral camptothecin analogs, among others, are presented with the results of their preclinical and clinical developments. This article focuses on the advancement of clinical development and also discusses the relative merits and demerits of these agents. The accelerated approval of these agents by regulatory authorities is supported by survival benefit, response rate and time to progression.

Shukla R.K.,Rajiv Gandhi University | Tiwari A.,Rajiv Gandhi University
Carbohydrate Polymers | Year: 2012

Colon specific delivery gained increasing importance for the treatment colonic diseases, such as colorectal cancer, amebiasis, ulcerative colitis and Crohn's disease. Different strategies are used for targeting drugs to the colon include enzymatically degradable polymers, prodrug based approach, coating with time or pH-dependent polymers, osmotically controlled and pressure-controlled drug delivery systems. Polysaccharides that are precisely activated by the physiological environment of the colon hold great promise, as they provide improved site specificity and meet the desired therapeutic needs. The colon specific delivery systems based on a single polysaccharide do not efficiently permit targeted release. The pH and transit time can vary depending on the individual and the particular disease state. The conventional approaches give rise to premature drug release. The combination/chemically modified forms of polysaccharides eliminated the drawbacks associated with the use of single polysaccharide. This review focus on approaches to emerging discipline, revisits the existing technologies and future development. © 2011 Elsevier Ltd. All rights reserved.

Hazarika B.,Rajiv Gandhi University
Journal of Intelligent and Fuzzy Systems | Year: 2013

In this article, using the Orlicz function M and the difference operator of order n ≥ 1, we introduce the spaces of lacunary ideal convergent difference sequences and lacunary strongly summable difference sequences of fuzzy numbers via fuzzy metric. We also established some relations related to these spaces. Further, we study some basic topological properties of these spaces. © 2013-IOS Press and the authors. All rights reserved.

Hazarika B.,Rajiv Gandhi University
Journal of Intelligent and Fuzzy Systems | Year: 2013

In this article, using the Musielak-Orlicz function mathbf{M} and the difference operator, we introduce the spaces of I-convergent generalized difference sequences of fuzzy numbers. We prove the completeness of these spaces. Further, we investigate some inclusion relations related to these spaces. © 2013-IOS Press and the authors. All rights reserved.

Hazarika B.,Rajiv Gandhi University
Journal of Intelligent and Fuzzy Systems | Year: 2014

An ideal I is a family of subsets of positive integers which is closed under taking finite unions and subsets of its elements. In this paper we have introduced ideal convergent sequences of fuzzy real numbers using σ-uniform density. Furthermore, inclusion between Iσ- convergence and invariant convergence also Iσ-convergence and -convergence were given. © 2014 - IOS Press and the authors. All rights reserved.

Sankaran N.,Rajiv Gandhi University
Studies in History and Philosophy of Science Part C :Studies in History and Philosophy of Biological and Biomedical Sciences | Year: 2014

The discovery that cancer may be caused by viruses occurred in the early twentieth century, a time when the very concept of viruses as we understand it today was in a considerable state of flux. Although certain features were agreed upon, viruses, more commonly referred to as 'filterable viruses' were not considered much different from other microbes such as bacteria except for their extremely small size, which rendered them ultramicroscopic and filterable. For a long time, in fact, viruses were defined rather by what they were not and what they could not do, rather than any known properties that set them apart from other microbes. Consequently when Peyton Rous suggested in 1912 that the causative agent of a transmissible sarcoma tumor of chickens was a virus, the medical research community was reluctant to accept his assessment on the grounds that cancer was not infectious and was caused by a physiological change within the cells. This difference in the bacteriological and physiological styles of thinking appears to have been prevalent in the wider research community, for when in 1917 Felix d'Herelle suggested that a transmissible lysis in bacteria, which he called bacteriophagy, was caused by a virus, his ideas were also opposed on similar grounds. It was not until the 1950s when when André Lwoff explained the phenomenon of lysogeny through his prophage hypothesis that the viral identities of the sarcoma-inducing agent and the bacteriophages were accepted. This paper examines the trajectories of the curiously parallel histories of the cancer viruses and highlights the similarities and differences between the ways in which prevailing ideas about the nature of viruses, heredity and infection drove researchers from disparate disciplines and geographic locations to develop their ideas and achieve some consensus about the nature of cancer viruses and bacteriophages. © 2014 Elsevier Ltd.

A mathematical model is conducted for the unsteady magnetohydrodynamic viscous, incompressible free convective flow of an electrically conducting Newtonian fluid over an impulsively-started semi-infinite vertical plate adjacent to saturated porous medium in the presence of appreciable thermal radiation heat transfer and chemical reaction of first order taking transverse magnetic field into account. The fluid is assumed optically thin gray gas, absorbing-emitting radiation, but a non-scattering medium. The governing non-linear partial differential equations are non-dimensionalized and are solved by an implicit finite difference scheme of Crank-Nicholson type. It is found that, increasing magnetic parameter serves to decelerate the flow, but increased temperatures and concentration values. An increase in the porosity parameter (K) is found to escalate the local skin friction (τx), Nusselt number (Nux) and the Sherwood number (Shx). Applications of the model include fundamental magneto-fluid dynamics, MHD energy systems and magneto-metallurgical processing for aircraft materials. © 2014 Production and hosting by Elsevier B.V. on behalf of Ain Shams University.

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