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Search Results: 1 - 10 of 1172 matches for " Nitin Sudhakar Kekre "
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Penile Skin Necrosis Mimicking Penile Gangrene: An Unusual Case
Sagar Sabharwal,John Samuel Banerji,Nitin Sudhakar Kekre
Urology Journal , 2013,
Abstract: No Abstract
Renal Osteodystrophy Secondary to Congenital Bilateral Ureteropelvic Junction Obstruction
Thampi John Nirmal,Nitin S Kekre
Urology Journal , 2011,
Continuous ambulatory peritoneal dialysis catheter placement: Is omentectomy necessary?
Kavalakkat Joseph,Kumar Santosh,Aswathaman Karthikeyan,Kekre Nitin
Urology Annals , 2010,
Abstract: Context: There are different methods of continuous ambulatory peritoneal dialysis (CAPD) catheter placement. Open surgical technique is a widely followed method. The complication rate following catheter placement varies and catheter blockage due to omental plugging is one of the main reasons. Aim: To analyze the need for routine omentectomy during CAPD catheter placement. Materials and Methods: This was a retrospective analysis of 58 CAPD catheter placements performed between July 2002 and June 2007. Tenckhoff double cuffed catheter was used in all. The postoperative complications were analyzed. Results: There were 44 males and 14 females. The mean age was 51 years ranging from 15 to 76 years. Of these, 40 (69%) patients underwent omentectomy (group A) and 18 (31%) did not (group B). Laparoscopic and open techniques were performed in 5 and 53 patients, respectively. Omentectomy was not performed in 13 patients with open technique and all the five in the laparoscopic group. One patient in group A developed hemoperitoneum which was treated conservatively. None from group A developed catheter blockage, whereas five (27.8%) from group B developed catheter blockage postoperatively. The median time interval between the primary procedure and development of catheter blockage was 45 days (ranged from 14 to 150 days). Conclusions: Omentectomy during CAPD catheter placement prevents catheter blockage and secondary interventions.
Open-Loop Wide-Bandwidth Phase Modulation Techniques
Nitin Nidhi,Pin-En Su,Sudhakar Pamarti
Journal of Electrical and Computer Engineering , 2011, DOI: 10.1155/2011/507381
Abstract: The ever-increasing growth in the bandwidth of wireless communication channels requires the transmitter to be wide-bandwidth and power-efficient. Polar and outphasing transmitter topologies are two promising candidates for such applications, in future. Both these architectures require a wide-bandwidth phase modulator. Open-loop phase modulation presents a viable solution for achieving wide-bandwidth operation. An overview of prior art and recent approaches for phase modulation is presented in this paper. Phase quantization noise cancellation was recently introduced to lower the out-of-band noise in a digital phase modulator. A detailed analysis on the impact of timing and quantization of the cancellation signal is presented. Noise generated by the transmitter in the receive band frequency poses another challenge for wide-bandwidth transmitter design. Addition of a noise transfer function notch, in a digital phase modulator, to reduce the noise in the receive band during phase modulation is described in this paper.
Changing profile of prostatic abscess
Bhagat, Suresh K.;Kekre, Nitin S.;Gopalakrishnan, Ganesh;Balaji, V.;Mathews, Mary S.;
International braz j urol , 2008, DOI: 10.1590/S1677-55382008000200006
Abstract: purpose: to compare the clinical presentation of prostatic abscess and treatment outcome in two different time frames with regards to etiologies, co-morbid factors and the impact of multidrug resistant organism. materials and methods: we retrospectively assessed the charts of 48 patients with the diagnosis of prostatic abscess from 1991 to 2005. the period was divided arbitrarily into two different time frames; phase i (1991-1997) and phase ii (1998-2005). factors analyzed included presenting features, predisposing factors, imaging, bacteriological and antibiotic susceptibility profile, treatment and its outcome. results: the mean patient age in phase i (n = 18) and phase ii (n = 30) were 59.22 ± 11.02 yrs and 49.14 ± 15.67 respectively (p = 0.013). diabetes mellitus was most common predisposing factor in both phases. eleven patients in phase ii had no co-morbid factor, of which nine were in the younger age group (22 - 44 years). of these eleven patients, five presented with pyrexia of unknown origin and had no lower urinary tract symptoms luts two patients with hiv had tuberculous prostatic abscess along with cryptococcal abscess in one in phase ii. two patients had melioidotic prostatic abscess in phase ii. the organisms cultured were predominantly susceptible to first line antibiotics in phase i whereas second or third line in phase ii. conclusion: the incidence of prostatic abscess is increasing in younger patients without co-morbid factors. the bacteriological profile remained generally unchanged, but recently multi drug resistant organisms have emerged. a worrying trend of hiv infection with tuberculous prostatic abscess and other rare organism is also emerging.
On Asymptotic Analysis of Packet and Wormhole Switched Routing Algorithm for Application-Specific Networks-on-Chip
Journal of Electrical and Computer Engineering , 2012, DOI: 10.1155/2012/216406
Abstract: The application of the multistage interconnection networks (MINs) in systems-on-chip (SoC) and networks-on-chip (NoC) is hottest since year 2002. Nevertheless, nobody used them practically for parallel communication. However, to overcome all the previous problems, a new method is proposed that uses MIN to provide intra-(global) communication among application-specific NoCs in networks-in-package (NiP). For this, four fault-tolerant parallel algorithms are proposed. It allows different NoCs to communicate in parallel using either fault-tolerant irregular Penta multistage interconnection network (PNN) or fault-tolerant regular Hexa multistage interconnection network (HXN). These two are acting as an interconnects-on-chip (IoC) in NiP. Both IoC use packet switching and wormhole switching to route packets from source NoC to destination NoC. The results are compared in terms of packet losses and wormhole switching which comes out to be better than packet switching. The comparison of IoC on cost and MTTR concluded that the HXN has the higher cost than the PNN, but MTTR values of the HXN are low in comparison to the PNN. This signifies that the ability to tolerate faults and online repairing of the HXN is higher and faster than the PNN.
Dynamic Energy Aware Gur Game based Algorithms for Self Optimizing Wireless Sensor Networks
Nitin Nitin
International Journal of Computers & Technology , 2013,
Abstract: This paper presents, Application of Gur Game Based Algorithm on Wireless Sensor Networks (WSNs) deployed to monitor Homogenous and Heterogeneous Grid in order to achieve Quality of Service (QoS) = 0.40 and 0.50. Further, the objectives of all these algorithms are to maximize the coverage of the sensor area while conserving energy consumed by sensor nodes. This is achieved via carefully activating/deactivating the sensors while maximizing the coverage area.
A 2D Finite Element Study on the Flow Pattern and Temperature Distribution for an Isothermal Spherical Furnace with the Aperture  [PDF]
Sudhakar Matle, Subbiah Sundar
Open Journal of Applied Sciences (OJAppS) , 2012, DOI: 10.4236/ojapps.2012.24046
Abstract: Calibration of radiation thermometers is one of the important research activities in the field of metrology. Many researchers in recent times have conducted numerical simulations on the calibration furnace to understand and overcome the experiment limitations. This paper presents a 2D numerical free convective study on the calibration furnace with the aperture using finite element method. The focused issues here are: aspect ratio effect on the flow pattern and temperature fields, heat transfer mechanism in the aperture zone as well as in hump regime. It is concluded that flow and temperature fields follow the same behavior in the hump regime as well as in the aperture zone. Also, it concluded that penetrative convection is more dominant for the enclosure of high aspect ratio.
Strategic Firm Interaction, Returns to Scale, Environmental Regulation and Ambient Charges in a Cournot Duopoly  [PDF]
Sudhakar Raju, Subhadra Ganguli
Technology and Investment (TI) , 2013, DOI: 10.4236/ti.2013.42014

Environmental regulation under conditions of imperfect competition in the presence of nonpoint sources (NPS) of pollution has not been well analyzed in the literature. This paper models strategic firm interaction and the effect of ambient charges on total NPS pollution in an imperfectly competitive, Cournot type duopoly under constant and decreasing returns to scale (CRTS & DRTS). We identify two distinct and often opposing effects. Under CRTS, the primary effect of a higher ambient charge is to increase pollution abatement (and thus decrease pollution) while the secondary effect is to lower output. Higher pollution abatement and lower output reinforce each other so that a higher ambient charge results in an unambiguous decrease in NPS pollution. Under DRTS, a higher ambient charge decreases output but the effect on abatement is ambiguous. Moreover, the marginal effect of a change in the ambient charge is larger under CRTS than DRTS. Our results indicate that, in general, pollution control mechanisms such as ambient charges tend to be more effective under CRTS.

Efficient Global Threshold Vector Outlyingness Ratio Filter for the Removal of Random Valued Impulse Noise  [PDF]
J. Amudha, R. Sudhakar
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.76058
Abstract: This research paper proposes a filter to remove Random Valued Impulse Noise (RVIN) based on Global Threshold Vector Outlyingness Ratio (GTVOR) that is applicable for real time image processing. This filter works with the algorithm that breaks the images into various decomposition levels using Discrete Wavelet Transform (DWT) and searches for the noisy pixels using the outlyingness of the pixel. This algorithm has the capability of differentiating high frequency pixels and the “noisy pixel” using the threshold as well as window adjustments. The damage and the loss of information are prevented by means of interior mining. This global threshold based algorithm uses different thresholds for different quadrants of DWT and thus helps in recovery of noisy image even if it is 90% affected. Experimental results exhibit that this method outperforms other existing methods for accurate noise detection and removal, at the same time chain of connectivity is not lost.
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