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Search Results: 1 - 10 of 7343 matches for " Akanksha Gupta "
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Design of Low-Voltage, Low-Power FGMOS Based Voltage Buffer, Analog Inverter and Winner-Take-All Analog Signal Processing Circuits  [PDF]
Akanksha Ninawe, Richa Srivastava, Akanksha Dewaker, Maneesha Gupta
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.71001
Abstract: This paper proposes novel floating-gate MOSFET (FGMOS) based Voltage Buffer, Analog Inverter and Winner-Take-All (WTA) circuits. The proposed circuits have low power dissipation. All proposed circuits are simulated using SPICE in 180 nm CMOS technology with supply voltages of ±1.25 V. The simulation results demonstrate increase in input range for FGMOS based voltage buffer and analog inverter and maximum power dissipation of 0.5 mW, 1.9 mW and 0.429 mW for FGMOS based voltage buffer, analog inverter and WTA circuits, respectively. The proposed circuits are intended to find applications in low voltage, low power consumer electronics.
Integrating Steganography Using Genetic Algorithm and Visual Cryptography for Robust Encryption in Computer Forensics
Ravindra Gupta,Akanksha Jain
International Journal of Electronics and Computer Science Engineering , 2012,
Abstract: The proposed system highlights a novel approach for creating a secure steganographic method using genetic algorithm and visual cryptography for robust encryption in computer forensics. Although there has been an extensive research work in the past, but majority of the research work has no much optimal consideration for robust security towards the encrypted image. The proposed method encodes the secret message in least significant bits of the original image, where the pixels values of the encrypted image are modified by the genetic algorithm to retain their statistic characters, thereby making the detection of secret of message difficult. Use of Genetic algorithm has compelled the system for enhancing the security using optimal selection, mutation, and cross over. The proposed system hides data in a real image and achieve its detection after under went to visual cryptographic. The implementation is done in java platform which shows that the proposed system has better resilienc by considering the Steganalysis and bench marking with optimal visual standards.
Artefacts in cone beam CT  [PDF]
Prashant P. Jaju, Mayuri Jain, Ajita Singh, Akanksha Gupta
Open Journal of Stomatology (OJST) , 2013, DOI: 10.4236/ojst.2013.35049
Abstract:

Cone beam computed tomography (CBCT) is the modern third dimension applied in the field of oral maxillofacial region. With lower radiation dose compared to conventional CT, its applications in dentistry has increased tremendously. Artefacts can seriously degrade the quality of computed tomographic (CBCT) images, sometimes to the point of making them diagnostically unusable. To optimize image quality, it is necessary to understand why artifacts occur and how they can be prevented or suppressed. CT artifacts originate from a range of sources; physical based, scanner based and patient based. This article highlights the causes of artefacts on CBCT images and methods to avoid them.

Duration of streptozotocin-induced diabetes differentially affects p38-mitogen-activated protein kinase (MAPK) phosphorylation in renal and vascular dysfunction
Hongmei Chen, Sachin Brahmbhatt, Akanksha Gupta, Avadhesh C Sharma
Cardiovascular Diabetology , 2005, DOI: 10.1186/1475-2840-4-3
Abstract: Male Sprague Dawley rats (350–400 g) were randomized into three groups: sham (N = 6), 14-days diabetic (N = 6) and 28-days diabetic rats (N = 6). Diabetes was induced using a single tail vein injection of STZ (60 mg/kg, I.V.) on the first day. Rats were monitored for 28 days and food, water intake and plasma glucose levels were noted. At both 14-days and 28-days post diabetes blood samples were collected and kidney cortex, medulla and aorta were harvested from each rat.The diabetic rats lost body weight at both 14-days (-10%) and 28-days (-13%) more significantly as compared to sham (+10%) group. Glucose levels were significantly elevated in the diabetic rats at both 14-days and 28-days post-STZ administration. Renal dysfunction as evidenced by renal hypertrophy, increased plasma creatinine concentration and reduced renal blood flow was observed in 14-days and 28-days diabetes. Vascular dysfunction as evidenced by decreased carotid blood flow was observed in 14-days and 28-days diabetes. We observed an up-regulation of inducible nitric oxide synthase (iNOS), prepro endothelin-1 (preproET-1) and phosphorylated p38-MAPK in thoracic aorta and kidney cortex but not in kidney medulla in 28-days diabetes group.The study provides evidence that diabetes produces vascular and renal dysfunction with a profound effect on signaling mechanisms at later stage of diabetes.Diabetes is a complex and multifarious group of disorders characterized by hyperglycemia that has reached epidemic proportions in the present century. Infection is a leading cause of morbidity and mortality among the diabetic population [1]. Diabetes is associated with vascular and renal dysfunction characterized by hypertension, dyslipidemia, microalbuminuria, macroalbuminuria and glomerular mesangial expansion [2,3].Mitogen-activated protein kinases (MAPKs) are implicated in the etiology of diabetes [4,5]. MAPKs are serine-threonine protein kinases involved in cell survival, proliferation and apoptosis [6]. Thr
Soft Computing Based TVertical Handoffs in Fourth Generation Wireless Networksexture Classification with MATLAB Tool
Ram Kumar Singh,Akanksha Balyan,Shyam Ji Gupta,Pradeep Kumar
International Journal of Soft Computing & Engineering , 2012,
Abstract: This book chapter presents a tutorial on vertical handoff methods in the evolving 4G wireless communication networks. Integration architectures for various wireless access networks are described. Then handoff classification, desirable handoff features, the handoff process, and multimode mobile terminals are discussed. A section is devoted to some recently proposed vertical handoff techniques. We propose a vertical handoff decision algorithm that determines whether a vertical handoff should be initiated and dynamically selects the optimum network connection from the available access network technologies to continue with an existing service or begin another service.
A Research paper: An ASCII value based data encryption algorithm and its comparison with other symmetric data encryption algorithms
Akanksha Mathur
International Journal on Computer Science and Engineering , 2012,
Abstract: Encryption is the process of transforming plaintext into the ciphertext where plaintext is the input to the encryption process and ciphertext is the output of the encryption process. Decryption isthe process of transforming ciphertext into the plaintext where ciphertext is the input to the decryption process and plaintext is the output of the decryption process. There are various encryption algorithms exist classified as symmetric and asymmetric encryption algorithms. Here, I present an algorithm for data encryption and decryption which is based on ASCII values of characters in the plaintext. This algorithm is used to encrypt data by using ASCII values of the data to be encrypted. The secret used will be modifying o another string and that string is used as a key to encrypt or decrypt the data. So, it can be said that it is a kind of symmetric encryption algorithm because it uses same key for encryption anddecryption but by slightly modifying it. This algorithm operates when the length of input and the length of key are same.
Comparative Analysis of Various Cloud Technologies
Akanksha Akanksha,Dr. Gurdev Singh
International Journal of Computers & Technology , 2012,
Abstract: With the increasing prevalence and demand of large scale cloudcomputing environment, a researcher has to draw more attentiontowards the services provided by the CLOUD. As the access tothe server is increasing, centralized and distributed computingarchitecture will produce bottlenecks data which affect thequality of cloud computing services and bring the huge supportto users. In this paper we are going to propose certain vitalaspects such as memory utilization, storage capacity to check theefficiency and performance of various clouds in cloudcomputing environment. This is based upon the static data. Theproposed mechanism enables users to access memories invarious systems depending on the predefined criteria. Selectionmethod for accessing the memory of a resource is properlyintroduced in this paper. Our evaluation results show that theaggregation of various clouds is effective in indicating the betterefficiency and also to reduce network traffic sent over cloudnetworks.
Polymers in Drug Delivery  [PDF]
Apurva Srivastava, Tejaswita Yadav, Soumya Sharma, Anjali Nayak, Akanksha Akanksha Kumari, Nidhi Mishra
Journal of Biosciences and Medicines (JBM) , 2016, DOI: 10.4236/jbm.2016.41009
Abstract: Polymers are being used extensively in drug delivery due to their surface and bulk properties. They are being used in drug formulations and in drug delivery devices. These drug delivery devices may be in the form of implants for controlled drug delivery. Polymers used in colloidal drug carrier systems, consisting of small particles, show great advantage in drug delivery systems because of optimized drug loading and releasing property. Polymeric nano particulate systems are available in wide variety and have established chemistry. Non toxic, biodegradable and biocompatible polymers are available. Some nano particulate polymeric systems possess ability to cross blood brain barrier. They offer protection against chemical degradation. Smart polymers are responsive to atmospheric stimulus like change in temperature; pressure, pH etc. thus are extremely beneficial for targeted drug delivery. Some polymeric systems conjugated with antibodies/specific biomarkers help in detecting molecular targets specifically in cancers. Surface coating with thiolated PEG, Silica-PEG improves water solubility and photo stability. Surface modification of drug carriers e.g. attachment with PEG or dextran to the lipid bilayer increases their blood circulation time. Polymer drug conjugates such as Zoladex, Lupron Depot, On Caspar PEG intron are used in treatment of prostate cancer and lymphoblastic leukemia. Polymeric Drug Delivery systems are being utilized for controlled drug delivery assuring patient compliance.
Scaling Up Diarrhea Prevention and Treatment Interventions: A Lives Saved Tool Analysis
Christa L. Fischer Walker ,Ingrid K. Friberg,Nancy Binkin,Mark Young,Neff Walker,Olivier Fontaine,Eva Weissman,Akanksha Gupta,Robert E. Black
PLOS Medicine , 2011, DOI: 10.1371/journal.pmed.1000428
Abstract: Background Diarrhea remains a leading cause of mortality among young children in low- and middle-income countries. Although the evidence for individual diarrhea prevention and treatment interventions is solid, the effect a comprehensive scale-up effort would have on diarrhea mortality has not been estimated. Methods and Findings We use the Lives Saved Tool (LiST) to estimate the potential lives saved if two scale-up scenarios for key diarrhea interventions (oral rehydration salts [ORS], zinc, antibiotics for dysentery, rotavirus vaccine, vitamin A supplementation, basic water, sanitation, hygiene, and breastfeeding) were implemented in the 68 high child mortality countries. We also conduct a simple costing exercise to estimate cost per capita and total costs for each scale-up scenario. Under the ambitious (feasible improvement in coverage of all interventions) and universal (assumes near 100% coverage of all interventions) scale-up scenarios, we demonstrate that diarrhea mortality can be reduced by 78% and 92%, respectively. With universal coverage nearly 5 million diarrheal deaths could be averted during the 5-year scale-up period for an additional cost of US$12.5 billion invested across 68 priority countries for individual-level prevention and treatment interventions, and an additional US$84.8 billion would be required for the addition of all water and sanitation interventions. Conclusion Using currently available interventions, we demonstrate that with improved coverage, diarrheal deaths can be drastically reduced. If delivery strategy bottlenecks can be overcome and the international community can collectively deliver on the key strategies outlined in these scenarios, we will be one step closer to achieving success for the United Nations' Millennium Development Goal 4 (MDG4) by 2015. Please see later in the article for the Editors' Summary
Power Factor Pre-regulator Using Constant Tolerance Band Control Scheme
Akanksha Mishra,Anamika Upadhyay
Lecture Notes in Engineering and Computer Science , 2008,
Abstract:
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