Arvinder Singh - Academia.edu (original) (raw)

Papers by Arvinder Singh

International Journal of Computer Applications, 2016

The objective of this paper is to propose a new ranking technique or algorithm for web page rank.... more The objective of this paper is to propose a new ranking technique or algorithm for web page rank. Different search engines use various ranking algorithms for the ranking of the web pages. Web Page ranking algorithm works only on the web page repository or indexed pages to the search engine for ranking. In reality, search engines work in two phases one is crawling phase and another is ranking phase. This proposed Algorithm is based on the ranking phase. In this Paper purposed a new ranking algorithm which will be known as Content"s Weight Based Page Ranking Algorithm (CWPRA). This algorithm Calculate the Page Rank based upon the weight of contents which is related to user query. Hope this algorithm provide the best, accurate and sufficient data or information or matter to the user according to the need.

Indian Journal of Science and Technology, 2015

In recent times the rate of colloquial and informal Punjabi text has increased dramatically. Peop... more In recent times the rate of colloquial and informal Punjabi text has increased dramatically. People are using the web as medium for expressing their ideas, thoughts and emotions, usually in form of colloquial articles and blogs. Punjabi has a wealth of Natural Language Processing (NLP) resources and tools. In comparison, resources for Punjabi dialects, the informal spoken varieties of Punjabi, are still lacking. Punjabi dialects also present many challenges for conversion as oneto- many word mapping, incorrect Punjabi spellings and sub-dialects. In this paper, we present a conversion system for Punjabi text to its equivalent Punjabi dialect text which could be extended easily to be applied to other dialects of Punjabi. The proposed system is developed using the rule based approach that mainly relies on morphological analysis, conversion rules and bilingual dictionaries. Firstly, various Punjabi words, that need conversion, are identified. Then these identified words are replaced using a rule-based component that consists of conversion rules and bilingual dictionaries. A manual error analysis of system's outcome shows that it produces correct conversion over 95% for Malwai dialect and over 94% for Doabi dialect. The development of these rules is not an easy task as dialect form originates from pronunciation by native speakers.

Scientific reports, Jan 23, 2015

Amongst the materials being investigated for supercapacitor electrodes, carbon based materials ar... more Amongst the materials being investigated for supercapacitor electrodes, carbon based materials are most investigated. However, pure carbon materials suffer from inherent physical processes which limit the maximum specific energy and power that can be achieved in an energy storage device. Therefore, use of carbon-based composites with suitable nano-materials is attaining prominence. The synergistic effect between the pseudocapacitive nanomaterials (high specific energy) and carbon (high specific power) is expected to deliver the desired improvements. We report the fabrication of high capacitance asymmetric supercapacitor based on electrodes of composites of SnO2 and V2O5 with multiwall carbon nanotubes and neutral 0.5 M Li2SO4 aqueous electrolyte. The advantages of the fabricated asymmetric supercapacitors are compared with the results published in the literature. The widened operating voltage window is due to the higher over-potential of electrolyte decomposition and a large differe...

Introduction: The term intracranial space occupying lesions includes lesions which expand in volu... more Introduction: The term intracranial space occupying lesions includes lesions which expand in volume to displace normal neural structures. They give rise to the various symptoms like focal seizures, paralysis, features of raised intracranial tension and false localizing signs. AIMS & OBJECTIVES: To determine the role of computed tomography in evaluation of space occupying lesions of brain, assessment of the site, nature and extent, age and sex prevalence of space occupying lesions. MATERIAL & METHODS: The present study was conducted on one hundred patients with space occupying lesions of the brain presenting with various neurologic symptoms or incidental findings. Patients of all age groups suspected to have intracranial space occupying lesions were included in the study. Results were expressed as mean ± SD and proportions as percentages. Results: Most of the cases of hyperdense lesions were intracerebral hemorrhages, meningioma, lymphoma and medulloblastoma. High grade astrocytomas were heterogenous hypodense lesions with irregular ring enhancement associated perilesional edema and mass effect. Low grade astrocytomas had minimal rim/ mural nodule enhancement. Intracranial tuberculoma and neurocysticercosis showed ring with nodular enhancing. Calcification was seen in tuberous sclerosis, neurocysticercosis, meningiomas, oligodendrogliomas, arteriovenous malformations and dermoid cyst. Congenital lesions had variable presentation ranging from cystic to mixed pattern lesions. CONCLUSIONS: In developing countries, CT imaging remains as a major diagnostic modality, with easy accessibility and technical ease as compared to MRI.

International Journal of Medical Toxicology and Legal Medicine

In the present investigation genomic DNA has been extracted from dried blood stains using manual ... more In the present investigation genomic DNA has been extracted from dried blood stains using manual organic extraction procedure by eliminating the use of phenol in order to make it safe and useful in forensic science investigation cases. The quality of extracted DNA was determined by means of agarose gel electrophoresis and it is noted that DNA can be isolated from dried blood stains without using phenol in extractian procedure. It is also observed that environmental conditions do not a effect DNA extraction procedure upto the period of analysis as observed in this investigation that is three months.

A large non symptomatic soft swelling in the submental area are usually due to thyroglossal duct ... more A large non symptomatic soft swelling in the submental area are usually due to thyroglossal duct cyst, sublingual dermoid cyst, giant ranula and cystic hygroma. Here we present a case of a rare giant submental hemangioma with multiple phleboliths in the floor of the mouth presenting as a submental swelling. We report a case of 14 years old male who presented with the mass in the submental region that had been gradually growing over period of several years.

The term pyelogenic diverticulum, or calyceal diverticulum is defined as a cystic cavity filled w... more The term pyelogenic diverticulum, or calyceal diverticulum is defined as a cystic cavity filled with urine within the renal parenchyma. The cyst or diverticulum is lined by transitional epithelium, surrounded by muscularis mucosa. It may be communicating with the collecting system via a narrow isthmus or infundibulum. The incidence of calyceal diverticula is about 2.1-4.5 per 1000 intravenous urographic examinations[1].There are two types are of calyceal diverticulum-one is related to a minor calyx and usually located in the upper pole, while the other is connected with the pelvis or a major calyx in the central portion of the kidney [1]. Mobile calculi and milk of calcium are characteristic findings in PCD [2, 3].

Retro peritoneum is the potential space between transversalis fascia of the posterior abdominal w... more Retro peritoneum is the potential space between transversalis fascia of the posterior abdominal wall and posterior parietal peritoneum. It extends from diaphragm to the pelvic brim in its supero-inferior aspect. Retroperitoneal space is sub divided into 3 areas by fascial planes-Anterior renal and posterior renal fascia, which join together lateral to kidneys on either side to form later conal fascia. Anterior para renal space:Limited anteriorly by posterior parietal peritoneum and posteriorly by anterior renal fascia and laterally by latero-conal fascia. It consists of Pancreas, Duodenum, Ascending colon and Descending colon. Peri-renal space: Limited by anterior and posterior renal fascia .It includes kidneys, Adrenals, Renal vessel and major blood vessels. Posterior para renal space-Only fat. There are studies available evaluating role of spiral computed tomography scan in evaluation of retroperitoneal pathologies. (1-20) But similar study has not been carried out in our setup. A...

$Research paper thumbnail of Distal renal tubular acidosis with severe bony deformities and multiple fractures$

Science of The Total Environment, 2015

The presence of naphthenic acids (NAs) and other organic constituents in oil sands process-affect... more The presence of naphthenic acids (NAs) and other organic constituents in oil sands process-affected water (OSPW) stored in tailings ponds, poses a serious environmental threat due to their potential toxicity to aquatic organisms and wild life. In this work, four fractions of OSPW, extracted by dichloromethane at different pHs, were ozonated to determine the ozone impact on NAs degradation. Extracts distributions showed that high carbon number NAs (14-22) were associated with higher pH fractions (pH N 7) and smaller carbon number NAs (7-13) with lower pH fractions (pH ≤ 7). Extracts showed similar hydrogen deficiency (Z-number) patterns centered on Z = 6. Analysis of the speciation of NAs and oxidized NAs in the four fractions showed that ozonation degraded most NAs (55% to 98%). Despite the high degradation levels, there was still significant toxicity of the fractions toward goldfish macrophages and measurable toxicity toward Vibrio fischeri. The toxicity of such a complex matrix as OSPW may be attributed to other organic compounds and degradation by-products not currently detected. Thus, there is a need to elucidate which compounds are responsible for the remaining OSPW toxicity and to determine if combined processes, such as ozonation followed by biological treatment, are able to completely detoxify OSPW. This work is taking the first steps into this direction, narrowing down the range of compounds which might be responsible for the toxicity.

Journal of Evolution of Medical and Dental sciences, 2014

To study the role of ultrasonography and computed tomography in the evaluation of abdominal masse... more To study the role of ultrasonography and computed tomography in the evaluation of abdominal masses, to compare their diagnostic accuracies, to evaluate the imaging features of lesions and to know the exact site of origin and extension into surrounding structures. MATERIALS AND METHODS:A prospective study of 104 patients with abdominal masses. USG was done with Toshiba SSA and Philips Envisor C machine and CT-Scan examination was performed in all patients on Philips brilliance 6-slice whole body CT scanner. RESULTS: There were 35(30.62%) cases of hepatobilliary masses, renal15(14.40%)cases, pancreatic 7(6.72%)cases, 5(4.80%) cases of splenic masses and 30(28.82%) cases of pelvic masses.8 cases with other abdominal masses. Hepatic SOL were detected in 6(5.76%) and 8(7.69%), 5(4.80%)cases of gall bladder masses and 4(3.85%), Omental caking was seen in 2(1.92%) cases and 4(3.85%), calcification was seen in 2(1.92%) cases and 4(3.85%) cases, renal calculi were seen in 4(3.84%) cases and6(5.77%) cases, on sonography and CT examination. Peritoneal deposits were seen in 3(2.88%) cases of ovarian carcinoma and unknown malignancy on US and in 5(4.88%) cases on CT. Ascites and lymphadenopathy was more accurately detected on CT as compared to US.CT detected splenicinfarcts which were missed on ultrasonography. CONCLUSION: CT is more sensitive in evaluation of site and size of lesion, detection of calcification, adjacent organ infiltration and regional lymphadenopathy. The limitations of CT are ionizing radiation, high cost and contrast administration. Hence ultrasound should be the primary screening modality and CT should be used for further characterizing the masses.

Optics & Laser Technology, 2012

This paper presents an investigation of self-focusing of elliptical laser beam in collisionless p... more This paper presents an investigation of self-focusing of elliptical laser beam in collisionless plasma and its effect on stimulated Brillouin scattering. The pump beam interacts with a pre-excited ion-acoustic wave leading to Brillouin back-scattered process. The transverse intensity gradient of a pump beam generates a ponderomotive force, which modifies the background plasma density profile in a direction transverse to pump beam axis. This modification in density effects the incident laser beam, ion-acoustic wave and back-scattered beam. Non-linear differential equations for the beam width parameters of pump laser beam, ion-acoustic wave and back-scattered beam are set up and solved numerically. It is observed from the analysis that the focusing of waves enhances the SBS back-reflectivity.

Asian Case Research Journal, 2011

The case presents a decision situation facing the Vice President of strategic planning at Piramal... more The case presents a decision situation facing the Vice President of strategic planning at Piramal Diagnostics Limited, who has to formulate the future growth strategy and decide on the roadmap. The company is the largest player in the organized medical diagnostics industry in India and has shown attractive growth in the past few years. The case describes the structural characteristics of the medical diagnostics industry in India and follows it with a description of the strengths and weaknesses of Piramal Diagnostics and the strategies adopted by it. The Vice President is expected to choose an appropriate strategic option to help the company achieve its ambitious growth target.

SPE Production & Operations, 2009

Summary Most existing production of waxy oils occurs in high-permeability formations, and wax iss... more Summary Most existing production of waxy oils occurs in high-permeability formations, and wax issues are mostly a problem in the production tubing or pipeline. Large reserves also exist in low-permeability formations that require hydraulic fracturing for economic production. Such a reservoir was recently discovered in Rajasthan, northwest India, overlying a more typical high-permeability formation, both with high-pour-point waxy oil. Because a very large amount of oil in place is present in the low-permeability formation, two fracturing campaigns were performed in two different horizons to assess the potential for successful well stimulation. The first fracturing campaign (on four wells) showed limited success. A study was performed to determine the reason for the failure, and significant changes were made for the second campaign. This paper documents the second campaign. This campaign featured the first successful use in India of heated fluids to stimulate a shallow, low-permeabili...

Rice Science, 2011

Most of the work on rice storage proteins focused on the major fraction-glutelin. In contrast to ... more Most of the work on rice storage proteins focused on the major fraction-glutelin. In contrast to previous reports of the occurrence of single legumin-like polypeptide pair in glutelin, two-dimensional gel electrophoresis revealed many glutelin bands, with some having and some lacking disulphide-linkages. Five legumin-like polypeptide pairs exhibited wide heterogeneity over a range of molecular weight (M r) 25 to 60 kDa, each having a large subunit (M r ranged from 18 to 40.5 kDa) disulphide-bonded to a small subunit (M r ranged from 16.5 to 18.0 kDa). A band of 49 kDa was homodimeric with two subunits of 29 kDa each; a polypeptide of 51 kDa which altered position to ones corresponding to 53 kDa and 57 kDa on 2-D gels contained intrapolypeptide linkages. Polypeptides of 65 kDa and 60 kDa occurred as aggregates of 110 kDa. The number of polypeptides in other seed protein fractions albumins, globulins and prolamins, varied from four to ten. One of the albumin bands had intrapolypeptide disulphide linkages (20 kDa) and the globulins contained two such bands (13.5 and 20 kDa). Thus, the present study provides a description of the polypeptide composition of different rice protein fractions that is finely resolved with respect to the occurrence of disulphide linkages.

physica status solidi (b), 2013

Graphene composites with metal or ceramics are being widely investigated for applications in elec... more Graphene composites with metal or ceramics are being widely investigated for applications in electronic and energy devices. In this paper, we report the chemical synthesis of graphene and graphite oxide (GO)/ZnO-Ag composites for application in energy storage devices, viz., supercapacitors (SCs). Results of surface modification and morphological studies carried out using Raman spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) data are discussed. The electrochemical performance of these electrode materials in SCs have been investigated using electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and galvanostatic charge-discharge techniques. Performance of the GO/ZnO-Ag composite has been compared with that of the pure graphene in terms of achievable energy and power density. Results show that opening of the GO sheets with ZnO spacer allows storage of more charge than achievable in pure graphene. Silver acts as a catalyst to enhance electrochemically active sites in the electrode material as well as helps in maintaining reasonable electronic conductivity. This is an important feature for the development of high performance SCs since GO/ZnO-Ag composite is a low-cost reproducible material in comparison to graphene.