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Articles 1 - 30 of 3717
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Sources Of Gravity Waves In The Lower Stratosphere Above South Pole, Zhenhua Li, Walter Robinson, Alan Liu
Sources Of Gravity Waves In The Lower Stratosphere Above South Pole, Zhenhua Li, Walter Robinson, Alan Liu
Zhenhua Li
No abstract provided.
Ultra-Thin Super High Frequency Two-Port Aln Contour-Mode Resonators And Filters, Matteo Rinaldi, Chiara Zuniga, Chengjie Zuo, Gianluca Piazza
Ultra-Thin Super High Frequency Two-Port Aln Contour-Mode Resonators And Filters, Matteo Rinaldi, Chiara Zuniga, Chengjie Zuo, Gianluca Piazza
Matteo Rinaldi
This paper reports on the demonstration of a new class of ultra-thin (250 nm thick) Super High Frequency (SHF) AlN piezoelectric two-port resonators and filters. A thickness field excitation scheme was employed to excite a higher order contour extensional mode of vibration in an AlN nano plate (250 nm thick) above 3 GHz and synthesize a 1.96 GHz narrow-bandwidth channel-select filter. The devices of this work are able to operate over a frequency range from 1.9 to 3.5 GHz and are employed to synthesize the highest frequency MEMS filter based on electrically self-coupled AlN contour-mode resonators. Very narrow bandwidth (~ …
Power Handling And Related Frequency Scaling Advantages In Piezoelectric Aln Contour-Mode Mems Resonators, Chengjie Zuo, Matteo Rinaldi, Gianluca Piazza
Power Handling And Related Frequency Scaling Advantages In Piezoelectric Aln Contour-Mode Mems Resonators, Chengjie Zuo, Matteo Rinaldi, Gianluca Piazza
Matteo Rinaldi
This paper reports on the analytical modeling and experimental verification of the mechanically-limited power handling and nonlinearity in piezoelectric aluminum nitride (AlN) contour-mode resonators (CMR) having different electrode configurations (thickness field excitation, lateral field excitation, one-port and two-port configurations) and operating at different frequencies (177-3047 MHz). Despite its simplicity, the one-dimensional analytical model fits the experimental behavior of AlN CMRs in terms of power handling capabilities. The model and experiment also confirm the advantage of scaling (i.e. miniaturizing) the AlN CMRs to higher frequencies at which higher critical power density can be more easily attained up to values in excess …
Thoughts Of Suicidality And Self-Harm In Middle Childhood: Relationship With Child Maltreatment And Maternal Substance Abuse And Depression, Tara Cossel, Natasha Elkovitch, David Hansen
Thoughts Of Suicidality And Self-Harm In Middle Childhood: Relationship With Child Maltreatment And Maternal Substance Abuse And Depression, Tara Cossel, Natasha Elkovitch, David Hansen
David J. Hansen
Child maltreatment victims are at increased risk for a multitude of symptoms, including: internalizing problems (e.g., depression, anxiety), behavior problems (e.g., aggression) and post-traumatic stress symptoms (Paolucci, Genuis, & Violato, 2001). Not all maltreated children present with the same outcomes, and research consistently demonstrates child abuse does not have an inevitable pattern or a unified presentation of symptoms. Some youth may be asymptomatic following abuse; others display a myriad of symptoms at varying levels of severity (Kendall-Tackett, Williams, & Finkelhor, 1993). A small percentage of this group becomes suicidal.
Recent studies have presented accumulating evidence that suicidality and self-harm warrant …
What Code-Mixed Dps Can Tell Us About Gender, Elena Valenzuela, Joyce Bruhn De Garavito, Ewelina Barski, Maria De Luna Villalón, Ana Faure, Yolanda Pangtay, Alma Ramírez Trujillo, Sonia Reis
What Code-Mixed Dps Can Tell Us About Gender, Elena Valenzuela, Joyce Bruhn De Garavito, Ewelina Barski, Maria De Luna Villalón, Ana Faure, Yolanda Pangtay, Alma Ramírez Trujillo, Sonia Reis
Ewelina Barski, PhD
There has been a growing interest in the examination of the steady state of simultaneous bilinguals. An understanding of what leads to the possible weaknesses in the grammar of early bilinguals can contribute to our understanding of the possible causes of the apparent characteristic ‘failures’ in second language acquisition (Montrul 2008). Spanish has a gender feature for nouns (Carroll 1989) and gender agreement for determiners and adjectives. Problems with the acquisition of gender marking on the noun and/or with gender agreement are well-known in the L2 literature (Hawkins 1998; Fernández–Garcia 1999; Franceschina 2001; Bruhn de Garavito and White 2002; White …
What Code-Mixed Dps Can Tell Us About Gender, Elena Valenzuela, Joyce Bruhn De Garavito, Ewelina Barski, Maria De Luna Villalón, Ana Faure, Yolanda Pangtay, Alma Ramírez Trujillo, Sonia Reis
What Code-Mixed Dps Can Tell Us About Gender, Elena Valenzuela, Joyce Bruhn De Garavito, Ewelina Barski, Maria De Luna Villalón, Ana Faure, Yolanda Pangtay, Alma Ramírez Trujillo, Sonia Reis
Joyce Bruhn de Garavito
There has been a growing interest in the examination of the steady state of simultaneous bilinguals. An understanding of what leads to the possible weaknesses in the grammar of early bilinguals can contribute to our understanding of the possible causes of the apparent characteristic ‘failures’ in second language acquisition (Montrul 2008). Spanish has a gender feature for nouns (Carroll 1989) and gender agreement for determiners and adjectives. Problems with the acquisition of gender marking on the noun and/or with gender agreement are well-known in the L2 literature (Hawkins 1998; Fernández–Garcia 1999; Franceschina 2001; Bruhn de Garavito and White 2002; White …
Chicago, Myra Hess Memorial Concert Series. Chicago Cultural Center. March 16, 2005, Oscar E. Macchioni
Chicago, Myra Hess Memorial Concert Series. Chicago Cultural Center. March 16, 2005, Oscar E. Macchioni
Oscar Macchioni
Optical Control Of Thermocapillary Effects In Complex Nanofluids, Yuval Lamhot, Assaf Barak, Carmel Rotschild, Mordechai Segev, Meirav Saraf, Efrat Lifshitz, Abraham Marmur, Ramy El-Ganainy, Demetrios N. Christodoulides
Optical Control Of Thermocapillary Effects In Complex Nanofluids, Yuval Lamhot, Assaf Barak, Carmel Rotschild, Mordechai Segev, Meirav Saraf, Efrat Lifshitz, Abraham Marmur, Ramy El-Ganainy, Demetrios N. Christodoulides
Ramy El-Ganainy
We study the strong coupling of light and nanoparticle suspensions and their surface tension effect in capillaries. We show experimentally and theoretically that increasing the intensity of a narrow laser beam passing through a capillary far away from the surface results in a significant decrease in the fluid level. The underlying mechanism relies on light-induced redistribution of nanoparticles in the bulk and the surface of the fluid, facilitating continuous optical control over the surface position. The experiments manifest optical control from afar over properties of fluid surfaces.
Stem Cell Matching For Patients Of Mixed Race, Ted C. Bergstrom
Stem Cell Matching For Patients Of Mixed Race, Ted C. Bergstrom
Ted C Bergstrom
Patients with leukemia and other blood diseases stand a good chance of recovery and a return to normal life if they receive a stem cell transplant from a living donor. In the absence of a transplant, their survival prospects are grim. For a transplant to be successful, the human leukocyte antigens (HLA) of the donor and recipient must be a close genetic match. To facilitate non-sibling matches, the developed nations of the world have set up national volunteer registries. The larges such registry is the NMDP (National Marrow Donor Program). We estimate the distribution of HLA types for individuals of …
Freakonomics: Steven Levitt, Alfredo Bateman
Towards Extending The Equilibrium Of Discrimination In The Internet To Its Fringes, Matthias Bärwolff
Towards Extending The Equilibrium Of Discrimination In The Internet To Its Fringes, Matthias Bärwolff
Matthias Bärwolff
The core insight to the history of the dynamics of limitations, restrictions, and discriminations on the Internet is that they are largely a corollary to the futility of obtaining an entirely 'neutral' design of the Internet that is both robust and scalable. The question then is how to arrange the necessary volume of discriminations so as to obtain a design as value free as possible, for only such a design can be in line with the premise of stipulating no values other than (1) good order at large, and (2) the appreciation of the pursuit of local purposes by individuals. …
Separation Of Santa And State Is Smart, Fair, Alan E. Garfield
Separation Of Santa And State Is Smart, Fair, Alan E. Garfield
Alan E Garfield
No abstract provided.
Towards Real Energy Economics: Energy Policy Driven By Life-Cycle Carbon Emission, R. Kenny, C. Law, Joshua M. Pearce
Towards Real Energy Economics: Energy Policy Driven By Life-Cycle Carbon Emission, R. Kenny, C. Law, Joshua M. Pearce
Joshua M. Pearce
¿Por Qué Celebramos La Navidad?, Jorge Adame Goddard
¿Por Qué Celebramos La Navidad?, Jorge Adame Goddard
Jorge Adame Goddard
No abstract provided.
Corticosteroids For Pain Relief In Sore Throat: Systematic Review And Meta-Analysis, Gail Hayward, Matthew J. Thompson, Carl J. Heneghan, Rafael Perera, Paul P. Glasziou, Chris B. Del Mar
Corticosteroids For Pain Relief In Sore Throat: Systematic Review And Meta-Analysis, Gail Hayward, Matthew J. Thompson, Carl J. Heneghan, Rafael Perera, Paul P. Glasziou, Chris B. Del Mar
Christopher Del Mar
Objective: To evaluate whether systemic corticosteroids improve symptoms of sore throat in adults and children. Design: Systematic review and meta-analysis. Data sources: Cochrane Central, Medline, Embase, Database of Reviews of Effectiveness (DARE), NHS Health Economics Database, and bibliographies. Outcome measures: Percentage of patients with complete resolution at 24 and 48 hours, mean time to onset of pain relief, mean time to complete resolution of symptoms, days missed from work or school, recurrence, and adverse events. Results: We included eight trials, consisting of 743 patients in total (369 children, 374 adults). 348 (47%) had exudative sore throat, and 330 (44%) were …
Neuraminidase Inhibitors For Preventing And Treating Influenza In Healthy Adults: Systematic Review And Meta-Analysis, Tom Jefferson, Mark Jones, Peter Doshi, Chris Del Mar
Neuraminidase Inhibitors For Preventing And Treating Influenza In Healthy Adults: Systematic Review And Meta-Analysis, Tom Jefferson, Mark Jones, Peter Doshi, Chris Del Mar
Christopher Del Mar
Objectives: To update a 2005 Cochrane review that assessed the effects of neuraminidase inhibitors in preventing or ameliorating the symptoms of influenza, the transmission of influenza, and complications from influenza in healthy adults, and to estimate the frequency of adverse effects. Search strategy: An updated search of the Cochrane central register of controlled trials (Cochrane Library 2009, issue 2), which contains the Acute Respiratory Infections Group’s specialised register, Medline (1950-Aug 2009), Embase (1980-Aug 2009), and post-marketing pharmacovigilance data and comparative safety cohorts. Selection criteria: Randomised placebo controlled studies of neuraminidase inhibitors in otherwise healthy adults exposed to naturally occurring influenza. …
Transparent Development Of The Who Rapid Advice Guidelines, Holger J. Schunemann, Suzanne R. Hill, Meetali Kakad, Gunn E. Vist, Richard Bellamy, Lauren Stockman, Torbjorn Fosen Wisloff, Chris Del Mar, Frederick Hayden, Timothy M. Uyeki, Jeremy Farrar, Yazdan Yazdanpanah, Howard Zucker, John Beigel, Tawee Chotpitayasunondh, Tran Tinh Hien, Bulent Ozbay, Norio Sugaya, Andrew D. Oxman
Transparent Development Of The Who Rapid Advice Guidelines, Holger J. Schunemann, Suzanne R. Hill, Meetali Kakad, Gunn E. Vist, Richard Bellamy, Lauren Stockman, Torbjorn Fosen Wisloff, Chris Del Mar, Frederick Hayden, Timothy M. Uyeki, Jeremy Farrar, Yazdan Yazdanpanah, Howard Zucker, John Beigel, Tawee Chotpitayasunondh, Tran Tinh Hien, Bulent Ozbay, Norio Sugaya, Andrew D. Oxman
Christopher Del Mar
Emerging health problems require rapid advice. We describe the development and pilot testing of a systematic, transparent approach used by the World Health Organization (WHO) to develop rapid advice guidelines in response to requests from member states confronted with uncertainty about the pharmacological management of avian influenza A (H5N1) virus infection. We first searched for systematic reviews of randomized trials of treatment and prevention of seasonal influenza and for nontrial evidence on H5N1 infection, including case reports and animal and in vitro studies. A panel of clinical experts, clinicians with experience in treating patients with H5N1, influenza researchers, and methodologists …
Possible Harms Of Oseltamivir—A Call For Urgent Action, Tom Jefferson, Mark Jones, Peter Doshi, Chris Del Mar
Possible Harms Of Oseltamivir—A Call For Urgent Action, Tom Jefferson, Mark Jones, Peter Doshi, Chris Del Mar
Christopher Del Mar
Extract: Oseltamivir is a successful drug: between July, 2004, and June, 2009, more than 11·5 million new prescriptions were issued in the USA, and nearly all influenza pandemic plans recommend antiviral drugs as a mainstay of containment on a population basis and treatment on an individual basis, with oseltamivir preferred because of ease of administration and storage. Because 75% of the world production of oseltamivir has been used in Japan,¹ this is where to look for any serious harms the drug might cause. ¹ See note in article.
Copyright For A Social Species, Robert E. Suggs
Copyright For A Social Species, Robert E. Suggs
Robert E. Suggs
Arguments about the proper scope of copyright protection focus on the economic consequences of varying degrees of protection. Most analysts view copyright as an economic phenomenon, and the size and health of our copyright industries measure the success of copyright policies. The constitutional text granting Congress the copyright power and the nature of special interest lobbying naturally create this economic focus; but this is a serious mistake. An exclusively economic focus makes no more sense than measuring the nutritional merits of our food supply from the size and profitability of the fast food industry. The expressive culture that copyright protects …
Modeling And Computer Simulation Of Fault Calculations For Transmission Lines, Dr. Adel A. Elbaset
Modeling And Computer Simulation Of Fault Calculations For Transmission Lines, Dr. Adel A. Elbaset
Dr. Adel A. Elbaset
Calculation of transmission line faults has a fundamental importance in the fault detection, classification, and location determination of faults in transmission line. This paper presents a proposed computer program based on Matlab software to calculate all ten types of shunt faults that may occur in a transmission line. Various fault scenarios (fault types, fault locations and fault impedance) are considered in this paper. The inputs of the proposed program are line length, source voltage, positive, negative and zero sequence for source impedance, line charging, and transmission line impedance. The output of the algorithm is used to train an artificial intelligence …
Comparative Evaluation Of Pid Voltage Mode, Pi Current Mode, Fuzzy And Pwm Based Sliding Mode Control For Dc-Dc Converters, Omar Ellabban, Joeri Van Mierlo
Comparative Evaluation Of Pid Voltage Mode, Pi Current Mode, Fuzzy And Pwm Based Sliding Mode Control For Dc-Dc Converters, Omar Ellabban, Joeri Van Mierlo
Omar Ellabban
This paper presents a comparison between the application of four control techniques in DC-DC converters. PID voltage mode (PID-VM), PI current mode (PI-CM), fuzzy, and PWM based sliding mode (SM) controllers are applied to buck converter. The design procedures of controllers are reviewed. The dynamic performance of these controllers under star-up, steady state, input voltage variation, load current disturbances and EMI spectrum are presented and compared.
Stability Analysis Of A Unified Power Flow Controller, Omar H. Abdalla, Mohamed A. E. Ghazy, Lotfy M. Lotfy, Nermeen A. M. Hassan
Stability Analysis Of A Unified Power Flow Controller, Omar H. Abdalla, Mohamed A. E. Ghazy, Lotfy M. Lotfy, Nermeen A. M. Hassan
Omar H. Abdalla
The paper concerns with stability analysis of a Unified Power Flow Controller (UPFC). A nonlinear model is described in the abc-reference frame and then transformed into the dq0-reference frame. The model includes shunt and series compensators of the UPFC. Stability analysis is presented first in a three-dimensional space of system parameters. A linearized model is obtained in state-space form to be used in small-signal stability studies. Effects of system parameters on stability are investigated using eigenvalue analysis. These include resistance, reactance, and modulation indices of the shunt and series components of the UPFC. Simulation results show that the stability of …
Bringing Small Business Development To Urban Neighborhoods, Robert E. Suggs
Bringing Small Business Development To Urban Neighborhoods, Robert E. Suggs
Robert E. Suggs
This article describes a race-neutral policy proposal designed to increase business formation and success rates for young urban African Americans. The proposal suggests using local governments' taxing authority, in a manner analogous to tax increment financing, to create financial incentives for successful small business owners to employ, and then mentor and train as business owners, young urban entrepreneurs from deteriorating neighborhoods. The amount of financial incentive varies directly with financial success of protégés and requires the transfer of some of the mentor’s social (reputational) capital to the protégé. Business activity has created wealth and economic mobility for other ethnic groups, …
Business Combination Antitakeover Statutes, The Unintended Repudiation Of The Internal Affairs Doctrine, And Constitutional Constraints On Choice Of Law, Robert E. Suggs
Business Combination Antitakeover Statutes, The Unintended Repudiation Of The Internal Affairs Doctrine, And Constitutional Constraints On Choice Of Law, Robert E. Suggs
Robert E. Suggs
This article examines the constitutional validity of business combination antitakeover statutes. Delaware and other important corporate law jurisdictions enacted these statutes during the 1980s to inhibit hostile leveraged corporate takeovers and protect incumbent managements. These statutes work by prohibiting transactions which enable a hostile acquirer with a mere majority of target stock to sell target assets for cash and retain all the cash to service acquisition debt while paying off with securities the minority shareholders' interest in the assets sold. This allows the takeover to be financed with the assets acquired. Analyzing the structural operation of these statutes in greater …
Racial Discrimination In Business Transactions, Robert E. Suggs
Racial Discrimination In Business Transactions, Robert E. Suggs
Robert E. Suggs
When the Supreme Court invalidated a municipal minority business set-aside in City of Richmond v. J.A. Croson Co., it failed to recognize the special circumstances confronting the minority entrepreneur. Contrary to the Court’s own erroneous assertion that “[s]tates and their local subdivisions have many legislative weapons at their disposal both to punish and prevent present [business] discrimination ….” – they do not. Nor can they create effective antidiscrimination remedies as a practical matter. As a result that decision leaves minority business owners vulnerable to discrimination from other business firms but without a remedy. Part I identifies the glaring failure of …
Rethinking Minority Business Development Strategies, Robert E. Suggs
Rethinking Minority Business Development Strategies, Robert E. Suggs
Robert E. Suggs
Minority business set-asides were created as a prophylactic measure to redress discrimination against minority owned business firms. Predominantly minority jurisdictions found them especially attractive because they promised to provide minority firms a share of the procurement dollars expended by these jurisdictions. The Croson decision invalidated Richmond’s ordinance and posed substantial barriers to further enactments. This article proposes an alternative to such set-aides. It argues that the proposed alternative, an Equal Opportunity Rating Agency (EORA), provides a superior business development policy tool and does not have the constitutional vulnerabilities of set-asides. An EORA would operate much like a credit rating agency, …
A Dialogue In Search Of Meaning, Robert E. Suggs
A Dialogue In Search Of Meaning, Robert E. Suggs
Robert E. Suggs
No abstract provided.
With Words That Last, Sean Nicholls, Leesha Mckenny, M.G. Michael, K. Michael
With Words That Last, Sean Nicholls, Leesha Mckenny, M.G. Michael, K. Michael
M. G. Michael
No abstract provided.
Rudra Interrupts Receptor Signaling Complexes To Negatively Regulate The Imd Pathway, Kamna Aggarwal, Florentina Rus, Christie Vriesema-Magnuson, Deniz Erturk Hasdemir, Nicholas Paquette, Neal S. Silverman
Rudra Interrupts Receptor Signaling Complexes To Negatively Regulate The Imd Pathway, Kamna Aggarwal, Florentina Rus, Christie Vriesema-Magnuson, Deniz Erturk Hasdemir, Nicholas Paquette, Neal S. Silverman
Neal Silverman
Insects rely primarily on innate immune responses to fight pathogens. In Drosophila, antimicrobial peptides are key contributors to host defense. Antimicrobial peptide gene expression is regulated by the IMD and Toll pathways. Bacterial peptidoglycans trigger these pathways, through recognition by peptidoglycan recognition proteins (PGRPs). DAP-type peptidoglycan triggers the IMD pathway via PGRP-LC and PGRP-LE, while lysine-type peptidoglycan is an agonist for the Toll pathway through PGRP-SA and PGRP-SD. Recent work has shown that the intensity and duration of the immune responses initiating with these receptors is tightly regulated at multiple levels, by a series of negative regulators. Through two-hybrid screening …
Fighting Infection Fly-Style, Louisa Wu, Neal S. Silverman
Fighting Infection Fly-Style, Louisa Wu, Neal S. Silverman
Neal Silverman
No abstract provided.