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Search Results: 1 - 10 of 1097 matches for " Vivek Gujar "
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Microbiological flora of mobile phones of resident doctors  [PDF]
Sandeep B. Kokate, Sanjaykumar R. More, Vivek Gujar, Smita Mundhe, Quazi Syed Zahiruddin
Journal of Biomedical Science and Engineering (JBiSE) , 2012, DOI: 10.4236/jbise.2012.511086
Abstract: Background: Many studies revealed that devices like stethoscope, mobile phones can act as an important source of microbes capable of causing nosocomial infections. Hence there is need of defining their role in spreading infection, so that we can take some preventive measures against it. Aims: To screen the mobile phones of resident doctors and perform microbeological study of the organisms isolated. Setting: Resident doctors working at Tertiary Care Hospital. Methods: Swabs of 50 mobile phones of resident doctors were taken by sterile cotton swab and inoculated on Blood agar, MacConkey agar, Sabaraud’s dextrose agar. Isolated organisms were processed according to standard protocol. Results: Swabs of mobile phones of 50 resident doctors were analyzed for presence of micro-organisms. Out of the 50 samples, 30 (60%) were contaminated with micro-organisms. 32 micro-organisms were isolated from 50 mobile phones as shown in table 3. Among 32 isolates, Coagulase negative Staphylococci 23 (71.87%) was the dominant organism followed by Diphtheroids 7 (21.87%), Aspergillus niger 2 (6.25%). Also proportion of contamination of mobile phones of male resident doctors was more than female resident doctors. Conclusion: Mobile phones may act as a potential source of micro-organisms and spread nosocomial infections. Hence proper infection control practices like proper hand washing, decontamination of mobiles should be routinely practiced.
An Improved Protocol for Biginelli Reaction  [PDF]
Vivek Srivastava
Green and Sustainable Chemistry (GSC) , 2013, DOI: 10.4236/gsc.2013.32A006
Abstract:

[Hmim][Tfa] was used as catalyst for the Biginelli reaction under microwave heating. Low catalyst loading, reduced reaction time and operational simplicity are the main highlights of this protocol. The proposed protocol was found active in the synthesis of 30 different biologically active compounds.

Enhancing the Quality of Distance Education Program: A Case Study of Program Investigatio
Rucha GUJAR,Rajendra VADNERE
International Online Journal of Educational Sciences , 2011,
Abstract: Information technology has helped people to come closer than ever, in terms of collaborative activities. This has increased the use of computers in all walks of life in society. Along with this the demand for trained persons in PC assembly, maintenance, up-gradation and networking is also increased. Considering this societal need, the School of Continuing Education of Yashwantrao Chavan Maharashtra Open University, Nashik (YCMOU) launched Diploma in Computer Hardware Maintenance and Network Technologies (DCHMNT) program in July 1999. As this is a pioneering program in this field and being a unique selfemployment generating program of its kind, it needs to be studied in greater details to enhance the quality of content and implementation. In the present communication, we have discussed a study, which investigates this academic program in relation to the need-satisfaction, the quality and the relevance of the content of the program, course wise content appropriateness, and appropriateness of the study material in concern with self-study, the framework, the language and the difficulty level. The results of pilot study has emerged an immediate need of revision of few courses in the program and its relevant study material. Thus the investigation study has located the pinpoints for the quality improvement.
An Optimal Multi-Unit Combinatorial Procurement Auction with Single Minded Bidders
Sujit Gujar,Y Narahari
Computer Science , 2009,
Abstract: The current art in optimal combinatorial auctions is limited to handling the case of single units of multiple items, with each bidder bidding on exactly one bundle (single minded bidders). This paper extends the current art by proposing an optimal auction for procuring multiple units of multiple items when the bidders are single minded. The auction minimizes the cost of procurement while satisfying Bayesian incentive compatibility and interim individual rationality. Under appropriate regularity conditions, this optimal auction also satisfies dominant strategy incentive compatibility.
On Optimal Linear Redistribution of VCG Payments in Assignment of Heterogeneous Objects
Sujit Gujar,Yadati Narahari
Computer Science , 2008,
Abstract: There are p heterogeneous objects to be assigned to n competing agents (n > p) each with unit demand. It is required to design a Groves mechanism for this assignment problem satisfying weak budget balance, individual rationality, and minimizing the budget imbalance. This calls for designing an appropriate rebate function. Our main result is an impossibility theorem which rules out linear rebate functions with non-zero efficiency in heterogeneous object assignment. Motivated by this theorem, we explore two approaches to get around this impossibility. In the first approach, we show that linear rebate functions with non-zero are possible when the valuations for the objects are correlated. In the second approach, we show that rebate functions with non-zero efficiency are possible if linearity is relaxed.
Redistribution Mechanisms for Assignment of Heterogeneous Objects
Sujit Gujar,Yadati Narahari
Computer Science , 2014, DOI: 10.1613/jair.3225
Abstract: There are p heterogeneous objects to be assigned to n competing agents (n > p) each with unit demand. It is required to design a Groves mechanism for this assignment problem satisfying weak budget balance, individual rationality, and minimizing the budget imbalance. This calls for designing an appropriate rebate function. When the objects are identical, this problem has been solved which we refer as WCO mechanism. We measure the performance of such mechanisms by the redistribution index. We first prove an impossibility theorem which rules out linear rebate functions with non-zero redistribution index in heterogeneous object assignment. Motivated by this theorem, we explore two approaches to get around this impossibility. In the first approach, we show that linear rebate functions with non-zero redistribution index are possible when the valuations for the objects have a certain type of relationship and we design a mechanism with linear rebate function that is worst case optimal. In the second approach, we show that rebate functions with non-zero efficiency are possible if linearity is relaxed. We extend the rebate functions of the WCO mechanism to heterogeneous objects assignment and conjecture them to be worst case optimal.
Characterization of Opaques off Konkan Coast Maharashtra, Central West Coast of India  [PDF]
A.R Gujar, N Angusamy, G. V. Rajamanickam
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2007, DOI: 10.4236/jmmce.2007.61005
Abstract: Characterisation of opaques, comprising of ilmenites and magnetites, separated from the sediment samples off Konkan coast, has been attempted. On the basis of dominance of intergrowth of the exsolved or replaced phases, magnetites of Vijayudurg and Wada vetye are grouped together while the magnetites of Ambolgarh and Rajapur are showing similar characteristics. Ilmenites display intergrowths with hematite and rutile. In Ambolgarh and Rajapur, ilmenites of exsolved and replacement phases are abundant with alterations along the borders. On the basis of intergrown lamellae width, the source rock for the ilmenites is attributed to the distant metamorphic rocks The presence of altered ilmenites testify a higher percentage of TiO2 in Ambolgarh and Rajapur. A higher amount of FeO (35.79 % - 36.25 %) in Wada Vetye and Vijaydurg is ascribed to higher percentage of ilmenite – hematite phase in the exsolved ilmenites. REE pattern of ilmenites, magnetites and non-magnetics show an enrichment of LREE over HREE. Ilmenite, magnetite and non-magnetics show a negative Eu anomaly which is ascribed to the individual or combination of the following conditions: 1) Melt effect, 2) Crystallo-Chemical effect, and 3) Competing mineral effect. A higher enrichment of TiO2 in the ilmenites reflects the possibility of establishing down-stream industries as well as the suitability for converting ilmenites into synthetic rutile.
Neurosarcoidosis: An Illustrative Case and Review of Perioperative Considerations  [PDF]
Vivek Arora, Srilatha Mallu
Open Journal of Anesthesiology (OJAnes) , 2012, DOI: 10.4236/ojanes.2012.24038
Abstract: Sarcoidosis is a multisystem inflammatory granulomatous disease of unknown etiology. Neurosarcoidosis (NS) is a rare but potentially devastating manifestation of sarcoidosis, with a prevalence of approximately 5% in patients with systemic sarcoidosis. Due to the possible involvement of any part of the nervous system, a myriad of neurological manifestations can occur. Clinical features resulting from involvement of the hypothalmo-pituitary axis and cranial nerves, in particular, cranial nerve VII are the more common presentations of this condition. Medical therapy with corticosteroids is the mainstay of treatment and providing tissue for diagnosis remains the principal indication for surgery. Therapeutically, neurosurgery is indicated only for life-threatening complications. We describe the clinical case of a patient with fatally progressive NS who had multiple anesthetic exposures. This case highlights the perioperative considerations of NS and its anesthetic implications.
The Role of Global Civil Society in Global Governance  [PDF]
Vivek Kumar Mishra
Beijing Law Review (BLR) , 2012, DOI: 10.4236/blr.2012.34026
Abstract: Globalisation is the most defining feature of the twenty first century. The globalised world faces new challenges such as climate change, terrorism, poverty and economic crisis. These challenges having no borders and cannot be solved by any country alone. These can be resolved only by coordinated efforts at the global level. Therefore, the world needs more effective forms of collaboration between international organisations, governments, the private sector and global civil society. The paper is an attempt to elucidate the role of global civil society as a means of global governance for the resolution of many global issues. More particularly, the aim is to understand how global civil society organisations are shaping the processes of global governance, and what their implications might be for the quality of governance at the international level.
High Performance Polymer Light-Emitting Devices  [PDF]
Vivek Kant Jogi
World Journal of Nano Science and Engineering (WJNSE) , 2014, DOI: 10.4236/wjnse.2014.41003
Abstract:
In order to improve the performance of polymer light-emitting devices, driving voltages, current efficiency, luminance and power efficiency of different cathode metals such as Ca/Al, CsF/Al, LiF/Al and LiF/Ca/Ag were compared. The results show that cathode metals CsF/Al contain the highest current efficiency, maximum luminance and power efficiency. Therefore, we can choose the CsF/Al to be the cathode for improving the performance of polymer light-emitting devices.
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