163 research outputs found
The Benefits of Being Economics Professor A (and not Z)
No full textAlphabetic name ordering on multi-authored academic papers, which is the convention in the economics discipline and various other disciplines, is to the advantage of people whose last name initials are placed early in the alphabet. As it turns out, Professor A, who has been a first author more often than Professor Z, will have published more articles and experienced afaster growth rate over the course of her career as a result of reputation and visibility. Moreover, authors know that name ordering matters and indeed take ordering seriously: Several characteristics of an author group composition determine the decision to deviate from the default alphabetic name order to a significant extent.performance measurement, incentives, economists, name ordering
Performance and Analysis of a U-Net Model for Automated Skin Lesion Segmentation
No full textA greater proportion of people are affected by skin cancer, particularly melanoma, which has a higher tendency to metastasize. For Dermatologist, Visual inspections are most challenging & complex task for melanoma detection. To solve this problem, dermoscopic images are analyzed and segmented. Due to the sensitivity involved in surgical operations, existing techniques are unable to achieve higher accuracy. As a result, computer-aided systems are essential to detect & segment dermoscopic images.
In this paper, for segmentation 5000 skin images were taken from the HAM10000 dataset. Prior to segmentation, preprocessing is done by resizing images. A novel U Net structure is a fully convolutional network is presented & implemented using up-sampling and down-sampling technique with Rectified Linear Units (ReLU) for activation functions. The outcomes of proposed methodology shows performance improvement for skin-lesion segmentation with 94.7 % pixel accuracy & 89.2 % dice coefficient compared with existing KNN & SVM techniques
A Survey on Anonymous On-Demand Routing Protocols for MANETs
No full textAt present Mobile ad hoc networks (MANET) is used in many real time applications and hence such networks are vulnerable to different kinds of security threats. MANET networks suffered more from security attacks due to use of free wireless communication frequency spectrum and dynamic topology. Therefore it becomes very tough to provide security to MANET under different adversarial environments like battlefields. For MANET, anonymous communications are vital under the adversarial environments, in which the identification of nodes as well as routes is replaced by pseudonyms or random numbers for the purpose of protection. There are many protocols presented for anonymous communication security for MANET, which hide node identities and routes from exterior observers in order to provide anonymity protection. This paper presents review of various anonymous on demand routing protocols
An Ultra-Linear LNA for Base stations
No full textIn the commercial basestation market of today, LNAs are implemented using GaAs pHEMT technology. The popularity of GaAs pHEMT technology is based on its excellent low noise and high linearity properties. In this project, an LNA for basestation applications is designed using SiGe technology, which can provide low noise performance, but requires more work to achieve a competitive linearity when comparing with GaAs pHEMT technology. The main motivation of a LNA implementation in SiGe are the lower cost, higher integration possibilities than GaAs. As such, in this master project an ultra-linear LNA has been designed in QUBiC4Xi technology for base station applications in the 1710-1980 MHz band. The requirement for a base station LNA are low noise, high gain, and high linearity. To achieve these goals simultaneously, a 2-stage topology is used where the first stage is optimized for lownoise and high-gain operation, whereas the second stage aims for high linearity and a high 1dB compression point using negative feedback. The first stage is using a cascode topology, which provides high gain and excellent reverse isolation. Its noise figure has been optimized by proper biasing and noise matching. The output stage is implemented using a differential structure, to enhance linearity and output power handling. The techniques used to improve the linearity of the output stage include overall feedback, Implicit IM3 cancellation, 2nd harmonic termination at the output, and out-of-band matching at its output. The out-of-band matching technique has been also evaluated separately for its linearity potential using a simplified Gummel Poon model to understand the impact of individual transistor parasitic (Cje,t f ,Cjc) on linearity. Since the targeted LNA input and output are single-ended, balun have been used in the interstage connection and at output convert from single-ended to differential. The 1 dB compression point of the output stage, which is typically limited by the maximum voltage swing of the transistor technology is in its configuration enhanced by applying impedance transformation in the output balun.MicrolectronicsMicroelectronics & Computer EngineeringElectrical Engineering, Mathematics and Computer Scienc
Oral Testimonies on Sai Baba. As Gathered During a Field Research in Shirdi and Other Locales in October-November 1985
No full textThe interviews and audio recordings comprised in this volume are the outcome of a field research to Maharashtra and Andhra Pradesh which took place in October-November 1985 for the preparation of the Author’s BA thesis on the life and teachings of the Indian saint Sai Baba of Shirdi (d. 1918), discussed at the Ca’ Foscari University of Venice in June 1987 (Un maestro dell’India moderna: il Sāī Bābā di Śirḍī.
L’uomo, l’ambiente, gli insegnamenti). The conversations of each day are preceded by excerpts from the Authorʼs diary. These testimonies record the words of various people in the village of Shirdi and other locales, among whom are the last old men who knew Sai Baba: Balaji Pilaji Gurav, Bappaji Lakshman Ratna Parke, Martanda Mhalsapati, Pandharinath Bhagavant Gonkar, Tukaram Raghujiv Borawke, and Uddhavrao Madhavrao Deshpande. While in Shirdi the Author was also able to interview Uttamrao Patil, son of Tatya Kote Patil, and in Mumbai he had the privilege of meeting Swami Ram Baba, who first met the saint in 1914. Taken altogether, these conversations are primary sources for the study of Sai Baba and may help to contextualize Shirdi as a pilgrimage place in the mid-1980s.The interviews and audio recordings comprised in this volume are the outcome of a field research to Maharashtra and Andhra Pradesh which took place in October-November 1985 for the preparation of the Author’s BA thesis on the life and teachings of the Indian saint Sai Baba of Shirdi (d. 1918), discussed at the Ca’ Foscari University of Venice in June 1987 (Un maestro dell’India moderna: il Sāī Bābā di Śirḍī.
L’uomo, l’ambiente, gli insegnamenti). The conversations of each day are preceded by excerpts from the Authorʼs diary. These testimonies record the words of various people in the village of Shirdi and other locales, among whom are the last old men who knew Sai Baba: Balaji Pilaji Gurav, Bappaji Lakshman Ratna Parke, Martanda Mhalsapati, Pandharinath Bhagavant Gonkar, Tukaram Raghujiv Borawke, and Uddhavrao Madhavrao Deshpande. While in Shirdi the Author was also able to interview Uttamrao Patil, son of Tatya Kote Patil, and in Mumbai he had the privilege of meeting Swami Ram Baba, who first met the saint in 1914. Taken altogether, these conversations are primary sources for the study of Sai Baba and may help to contextualize Shirdi as a pilgrimage place in the mid-1980s
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