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SELF-DUAL CODES OVER THE RING F2m + uF2m + vF2m + uvF2m
Ankur 장전수학회 2018 Proceedings of the Jangjeon mathematical society Vol.21 No.4
We discuss self-dual codes over the ring R = F2m +uF2m + vF2m + uvF2m, u² = 0, v² = 0, uv = vu. We consider denition of trace function and self-dual basis over the field F2m. We consider the Gray map and self-orthogonal basis to discuss some theoretical properties of self-dual and Type II codes over the ring R. Also we see how Lee weight and trace are related over the ring R for a self-dual basis.
Ankur Bansal,Priyank Yadav,Manoj Kumar,Satya Narayan Sankhwar,Bimalesh Purkait,Ankur Jhanwar,Siddharth Singh 대한배뇨장애요실금학회 2016 International Neurourology Journal Vol.20 No.3
Purpose: This study was performed to characterise the nature, clinical presentation, mode of insertion, and management of intravesical foreign bodies in patients treated at our hospital. Methods: Between January 2008 and December 2014, 49 patients were treated for intravesical foreign bodies at King George Medical University, Lucknow. All records of these patients were retrospectively analysed to characterise the nature of the foreign body, each patient’s clinical presentation, the mode of insertion, and how the case was managed. Results: A total of 49 foreign bodies were retrieved from patients’ urinary bladders during the study period. The patients ranged in age from 11 to 68 years. Thirty-three patients presented with complaints of haematuria (67.3%), 29 complained of frequency of urination and dysuria (59.1%), and 5 patients reported pelvic pain (10.2%). The circumstances of insertion were iatrogenic in 20 cases (40.8%), self-insertion in 17 cases (34.6%), sexual abuse in 4 cases (8.1%), migration from another organ in 4 cases (8.1%), and assault in 4 cases (8.1%). Of the foreign bodies, 33 (67.3%) were retrieved by cystoscopy, while transurethral cystolitholapaxy was required in 10 patients (20.4%), percutaneous suprapubic cystolitholapaxy was performed in 4 patients (8.1%), and holmium laser lithotripsy was performed in 2 patients (4.08%). Conclusions: Foreign bodies should always be included in the differential diagnosis when evaluating a patient who presents with chronic lower urinary tract symptoms. A large percentage of foreign bodies can be retrieved using endoscopic techniques. Open surgical removal may be performed in cases where endoscopic techniques are unsuitable or have failed.
Myocardial Postconditioning: Next Step to Cardioprotection
Ankur Rohilla,Seema Rohilla,Ashok Kushnoor 대한약학회 2011 Archives of Pharmacal Research Vol.34 No.9
Myocardial ischemia is a condition in which lack of blood flow to the cardiac muscle occurs resulting in deficient oxygen and nutrient supply to the heart. The restoration of blood flow to an organ or tissue is termed reperfusion. Brief episodes of ischemia and reperfusion given after prolonged ischemia and at the onset of reperfusion denotes postconditioning. Myocardial postconditioning is a phenomenon in which myocardium from lethal ischemia-reperfusion injury is protected. However, numerous experimental studies reveal that the cardioprotective effects of postconditioning are suppressed in various pathological states. This review critically discusses the mechanisms involved in the cardioprotective effects of postconditioning and factors affecting the cardioprotective potential of myocardial postconditioning.
Sarcopenia: Ammonia metabolism and hepatic encephalopathy
Ankur Jindal,Rakesh Kumar Jagdish 대한간학회 2019 Clinical and Molecular Hepatology(대한간학회지) Vol.25 No.3
Sarcopenia (loss of muscle mass and/or strength) frequently complicates liver cirrhosis and adversely affects the quality of life; cirrhosis related liver decompensation and significantly decreases wait-list and post-liver transplantation survival. The main therapeutic strategies to improve or reverse sarcopenia include dietary interventions (supplemental calorie and protein intake), increased physical activity (supervised resistance and endurance exercises), hormonal therapy (testosterone), and ammonia lowering agents (L-ornithine L-aspartate, branch chain amino acids) as well as mechanistic approaches that target underlying molecular and metabolic abnormalities. Besides other factors, hyperammonemia has recently gained attention and increase sarcopenia by various mechanisms including increased expression of myostatin, increased phosphorylation of eukaryotic initiation factor 2a, cataplerosis of α ketoglutarate, mitochondrial dysfunction, increased reactive oxygen species that decrease protein synthesis and increased autophagy-mediated proteolysis. Sarcopenia contributes to frailty and increases the risk of minimal and overt hepatic encephalopathy.
( Ankur Kumar ),( Sudhir Kumar Dhama ),( Kuldeep Tyagi ),( Neeraj Kumar Tyagi ) 전북대학교 농업과학기술연구소 2011 농업생명과학연구 Vol.42 No.1
The present study was conducted to evaluate the genetic variability and correlation of different characters associated with grain yield in wheat. Forty genotypes were grown in randomized block design with three replications and evaluated for twelve yield and yield-related characters. Highly significant differences and adequate genetic variability were observed among the genotypes for all twelve characters. The heritability showed highest value for plant height, days to 50% flowering, days to maturity, peduncle length, 100 grain weight, number of spikelet per spike and number of grains per spikelet. Highest values of genetic advance were obtained in biological yield, plant height, days to maturity, peduncle length and days to 50% flowering. Correlation studies revealed an intensive selection for number of tillers, days to 50% flowering, days to maturity, number of spikelet per spike, number of grains per spikelet and 100 grain weight will contribute to improve the seed yield in wheat. Path analysis showed that maximum direct effect on grain yield per plant was contributed mostly by biological yield, followed by harvest index, spike length, plant height and days to 50% flowering. Principal components analysis (PCA) was performed and the first five principal components explained 75% of the observed variation. PC1 accounted for 23% of variation and showed the largest loading values for number of tiller`s per plant, biological yield and grain yield per plant. PC2 accounted for 17% and associated with plant height, peduncle length and harvest index. PC3 accounted for 13% and related to the days to 50% flowering and days to maturity. PCA analysis showed that wheat genotypes HPB42, UP2123, PBW527 and HD3024 showed good performance among wheat genotypes on the basis of all traits combined. The identified genotypes may be useful for wheat yield improvement.
A Novel Low Power Design of ALU Using Ad Hoc Techniques
Ankur Agarwa,A. S. Pandya,YoungUhg Lho 한국지능시스템학회 2005 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.5 No.2
This paper presents the comparison and performance analysis for CPL and CMOS based designs. We have developed the Verilog-HDL codes for the proposed designs and simulated them using ModelSim for verifying the logical correctness and the timing properties of the proposed designs. The proposed designs are then analyzed at the layout level using LASI. The layouts of the proposed designs are simulated in Winspice for timing and power characteristics. The result shows that the new circuits presented consistently consume less power than the conventional design of the same circuits. It can also be seen that these circuits have the lesser propagation delay and thus higher speed than the conventional designs.
Ankur Goel,Akhilesh Swarup 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.1
Active disturbance rejection control (ADRC) is a unique control strategy that combines the effectiveness of error driven PID controller, usefulness of state observer and strength of nonlinear feedback. This control algorithm, not only actively (online) estimates but also compensates the effects of unknown internal and external disturbances, present inherently in the plant with the help of a well-tuned extended state observer (ESO). Although, the classical solution to the parameter tuning performed by using parameterization technique provides good solution, it is not optimal for having desired performance specifications. Consequently, it became imperative to have intelligent tuning technique to achieve optimized solution to parameter tuning problem. In this regards, the Evolutionary Algorithms (EA), inspired by natural system and based on swarm intelligence, are proven to be the best tool to find the optimized solution of multi-dimensional problems. This paper presents an application of an EA optimized ADRC controller on an uncertain 2-DoF revolute-prismatic (RP) robotic manipulator for efficient trajectory tracking and parametric robustness. Eventually, the conventional ADRC design problem is converted into a special optimization problem for finding the optimal controller tuning parameters. To accomplish this task, two well-known EA’s viz. Particle Swarm Optimization (PSO) and Bacteria Foraging Optimization (BFO) are implemented and performance of EA based controller-plant configuration is individually analyzed for each algorithm. The results of this note illustrate the benefits and weakness of the EA for implementing ADRC on MIMO systems. The performance of both the optimization techniques is compared in terms of computational time and convergence efficiency. Further, the optimized controllers are tested for the robustness in presence of disturbance and sensor noise to imitate real engineering. MATLAB based simulation results are presented and compared to demonstrate the effectiveness of both the EA's in designing an ADRC controller for improving manipulator tracking ability.