oalib

OALib Journal期刊

ISSN: 2333-9721

费用:99美元

投稿

时间不限

2018 ( 23 )

2017 ( 26 )

2016 ( 42 )

2015 ( 351 )

自定义范围…

匹配条件: “Laura;” ,找到相关结果约11743条。
列表显示的所有文章,均可免费获取
第1页/共11743条
每页显示
Combining Public Key Encryption with Schnorr Digital Signature  [PDF]
Laura Savu
Journal of Software Engineering and Applications (JSEA) , 2012, DOI: 10.4236/jsea.2012.52016
Abstract: This article presents a new signcryption scheme which is based on the Schnorr digital signature algorithm. The new scheme represents my personal contribution to signcryption area. I have implemented the algorithm in a program and here are provided the steps of the algorithm, the results and some examples. The paper also contains the presentation of the original Signcryption scheme, based on ElGamal digital signature and discusses the practical applications of Signcryption in real life. The purpose of the study is to combine the public key encryption with Schnorr digital signature in order to obtain less computational and communicational costs. Signcryption primitive is a better approach then Encrypt-then-Sign or Sign-then-Encrypt methods regarding the costs. All these algorithms offer the possibility to transmit a message over an insecure channel providing both authenticity and confidentiality.
Practical Stabilization for Uncertain Pseudo-Linear and Pseudo-Quadratic MIMO Systems  [PDF]
Laura Celentano
International Journal of Modern Nonlinear Theory and Application (IJMNTA) , 2013, DOI: 10.4236/ijmnta.2013.21004
Abstract:

In this paper the problem of practical stabilization for a significant class of MIMO uncertain pseudo-linear and pseudo-quadratic systems, with additional bounded nonlinearities and/or bounded disturbances, is considered. By using the concept of majorant system, via Lyapunov approach, new fundamental theorems, from which derive explicit formulas to design state feedback control laws, with a possible imperfect compensation of nonlinearities and disturbances, are stated. These results guarantee a specified convergence velocity of the linearized system of the majorant system and a desired steady-state output for generic uncertainties and/or generic bounded nonlinearities and/or bounded disturbances.

Book Announcement of L. Celentano, Robust Tracking Controllers Design with Generic References for Continuous and Discrete Uncertain Linear SISO Systems, LAP LAMBERT Academic Publishing, 2012  [PDF]
Laura Celentano
International Journal of Modern Nonlinear Theory and Application (IJMNTA) , 2014,
Abstract:

In this book new results on controller design techniques for the tracking of generic reference inputs are presented. They allow the design of a controller for an uncertain process, either continuous or discrete-time, without zeros, and with measurable state. The controller guarantees that the control system is Type 1 and has the desired constant gain and poles or that the control system tracks, with a specified maximum error and with a specified maximum time constant, a generic reference with bounded derivative (variation in the discrete-time case), also in the presence of a generic disturbance with bounded derivative (variation). In addition, it is considered the case in which the reference is known a priori.

The utility and the efficiency of the proposed methods are illustrated with attractive and significant examples of motion control and temperature control.

This book is useful for the design of control systems, especially for manufacturing systems, that are versatile, fast, precise and robust.

Gender in the American Anthology Apparatus: A Linguistic Analysis  [PDF]
Laura Aull
Advances in Literary Study (ALS) , 2014, DOI: 10.4236/als.2014.21008
Abstract:

Most American anthology and canon revision has focused on author and text selections but little on the anthology editorial apparatus. The following study responds to this gap by analyzing gender representation across prefaces and overviews of the Norton and Heath American anthologies (1979-2010). Through a combined rhetorical and corpus linguistic analysis, the study reveals disparate gender representation in these materials: women are increasingly mentioned over time, but men continue to emerge as individuals of importance while women are discussed primarily as a group. This examination suggests that the revisionist, feminist scrutiny of Norton and Heath inventory has not been brought to bear on the anthologies’ apparatus—and that discursive patterns therein remain largely invisible despite that they contradict efforts to revise gender bias in anthologies. In so doing, the study offers an exploratory analysis of new methods (combined linguistic and rhetorical analysis) and new sites (apparatus texts) for examining gender in canonical and pedagogical materials.

Does the Month of Birth Influence the Timing of Life Course Decisions? Evidence from a Natural Experiment in Italy  [PDF]
Laura Cavalli
Open Journal of Social Sciences (JSS) , 2014, DOI: 10.4236/jss.2014.21011
Abstract: Social scientists have observed for a long time a negative relationship between the time spent on education and the timing of family formation. Using data from the I.D.E.A. survey (2003), a birth-month experiment on a sample of 3000 young Italian adults is employed in order to explore whether a different month of birth leads to regular differences in life course decisions of young Italians. The results suggest that the “social” age, as determined by the school cohort, rather than the biological age, is an important determinant of the timing of demographic events during the transition to adulthood.
A versatile vector system for generating recombinant EGFP-tagged proteins in yeast  [PDF]
Francesco Palma, Laura Chiarantini
Advances in Bioscience and Biotechnology (ABB) , 2011, DOI: 10.4236/abb.2011.21003
Abstract: This paper reports a versatile egfp-tagged pFL61-based expression vector system which allows the production on yeast of homo- and heterologous proteins fused with the Enhanced Green Fluorescent Protein (EGFP) at the C-terminus. This expression system, which involves a fluorescent protein, readily allows both to verify the expression and to localize the protein in the yeast cell. The vector carries a Not I site upstream the first codon of the egfp gene. The yeast cells harbouring this plasmid emit a feeble emission compared to the fluorescence expected. Was then investigated the effect of the Not I site, located very close to the start codon, on the expression of the reporter egfp gene using northern and western blotting, fluorescence microscopy and flow cytometry. Data indicated that this palindromic site could hide the start codon so as to negatively affect translation. This aspect confers to the proposed expression system an advantage in distinguishing clones after transformation.
A Case of Type I Hepatorenal Syndrome Treated with Vasopressin  [PDF]
Laura Connor, Geoffrey Teehan
Open Journal of Nephrology (OJNeph) , 2013, DOI: 10.4236/ojneph.2013.33025
Abstract:

Hepatorenal syndrome (HRS) is a grave complication of end-stage liver disease and is associated with a very high mortality. This case report described a 42-year-old female with advanced alcohol-induced cirrhosis who developed HRS that was initially treated with Midodrine and Octreotide but renal function continued to deteriorate. Vasopressin therapy was added and HRS was successfully reversed. There are few data available on the use of vasopressin for HRS and this case supports its use in treatment of HRS, particularly in countries where the more widely studied Terlipressin is unavailable. This case also demonstrates that a patient failing one medical therapy for HRS may respond to an alternative or adjunctive therapy. Therefore, this should be attempted to increase the patient’s chance of survival.

Predicting Use of Lights and Siren for Patient Illnesses  [PDF]
Jessica Mueller, Laura Stanley
Open Journal of Safety Science and Technology (OJSST) , 2013, DOI: 10.4236/ojsst.2013.33008
Abstract:

Lights and siren are frequently used by Emergency Medical Service (EMS) groups to reduce response times and increase a patient’s chance for survival. However, the use of lights and siren in EMS patient transport has been associated with occasional inappropriate use, higher crash rates involving the ambulance, and a potential “wake effect” increasing crash rates in ambient traffic. This study examines types of patient illnesses and their involvement with either emergency (lights and siren engaged) or non-emergency transport. Patient care records were analyzed from a five-year period from a private medical transportation company. A binary logistic regression model was built to predict the transportation mode (lights and siren or non-emergency-mode) most likely to accompany each unique primary patient illness. Patient illnesses were identified that showed a higher probability of transport using lights and siren. Fifteen illness descriptions were identified from the records as being more likely to result in emergency mode travel, including airway obstruction, altered level of consciousness, breathing problems, cardiac arrest, cardiac symptoms, chest pain, congestive heart failure/pulmonary embolism, heart/cardiac, obstetrics, respiratory arrest, respiratory distress, stroke/cerebrovascular accident, trauma, unconscious, and patients where data was not entered. The patient illnesses associated with lights and siren were not limited to cardiac conditions and symptoms, which suggest that response-time goals based solely on cardiac arrest patients may need to be expanded to include other illnesses such as respiratory conditions. Expanded studies could assess whether or not lights and sirens result in a clinically significant time savings across the spectrum of illnesses that are currently being transported using lights and siren. The list of illnesses identified here as more commonly utilizing lights and siren could be useful to untrained EMS or dispatch workers to assist in minimizing unnecessary emergency mode travel, thereby increasing safety for EMS workers, patients, and the general public.

On a Discrete Version of the Mohr-Mascheroni Theorem  [PDF]
Marius Munteanu, Laura Munteanu
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.411A4002
Abstract:

We introduce a new geometric tool called n-compass and show that the famous theorem of Mascheroni and Mohr remains valid if the traditional compass is replaced by the newly introduced tool.

Rational Equiangular Polygons  [PDF]
Marius Munteanu, Laura Munteanu
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.410197
Abstract:

The main purpose of this note is to investigate equiangular polygons with rational edges. When the number of edges is the power of a prime, we determine simple, necessary and sufficient conditions for the existence of such polygons. As special cases of our investigations, we settle two conjectures involving arithmetic polygons.

第1页/共11743条
每页显示


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.