background preloader

PubPeer - Search publications and join the conversation.

PubPeer - Search publications and join the conversation.
Related:  researchblogs de la famille

‎www.alexwg.org/publications/PhysRevLett_110-168702.pdf Home :: SSRN Improving the reporting of public health intervention research: advancing TREND and CONSORT Rebecca Armstrong, Senior Research Fellow1,2, Elizabeth Waters, Professorial Fellow, Public Health and Health Equity1,2, Laurence Moore, Professor and Director3, Elisha Riggs, Research Fellow2, Luis Gabriel Cuervo, MD, Unit Chief, Research Promotion and Development4, Pisake Lumbiganon, Professor in Ob & Gyn5 and Penelope Hawe, Professor, Markin Chair in Health and Society & Alberta Heritage, Foundation for Medical Research Health ScientistThe views expressed in this publication do not necessarily represent those of the organisations within which authors are employed.6 + Author Affiliations Address correspondence to Rebecca Armstrong, E-mail: rarmstrong@vichealth.vic.gov.au Background Evidence-based public health decision-making depends on high quality and transparent accounts of what interventions are effective, for whom, how and at what cost. Keywords Introduction Value of CONSORT and TREND in improving the reporting of primary research Reporting INTRODUCTION/BACKGROUND Sustainability

Black Holes Won’t Incinerate You, After All “You wait for a gem in an endless sea of blah.” -Lawrence Grossman On the one hand, we have General Relativity, our theory of space, time, and gravity. Image credit: Wikimedia commons user Johnstone; Earth from NASA’s Galileo mission. It describes the Universe on both large and small scales perfectly, from the hot Big Bang to our cold accelerating expansion, from vast superclusters of galaxies down to the interiors of black holes. Image credit: NASA, ESA, M. But General Relativity doesn’t tell us everything. But that does include, when an excessive amount of mass/energy gets concentrated in one region of spacetime, black holes. Image credit: anrophysics 2008-09, via Bangkok Patana School But if you want to properly describe the matter and radiation that lives in this spacetime, you need something else. You need equations and laws that govern each individual quantum of energy and all of their interactions. Image credit: The Particle Adventure / CPEP / LBNL.

Home - ClinicalTrials.gov 2015 - PLOS Medicine - RECORD.pdf Particle Decays Point to an Arrow of Time +Enlarge image Time moves irrevocably in one direction. Things get old, decay, and fall apart, but they rarely ever reassemble and grow young. But at the particle level, time’s arrow is not so clearly defined. In trying to understand the nature of particle interactions, observing the behavior of those interactions under different symmetry transformations has proven invaluable in formulating and verifying the fundamental theory. It is, however, possible to infer time-reversal violation (TRV) through observations of CP violation in K and B meson decays using the CPT theorem. Using a method suggested previously [6], Lees et al. of the BaBar collaboration have now observed an explicit time-reversal violation in the decay of mesons [1]. One of the keys to identifying the various meson combinations is the energetic, asymmetric collider of the PEP-II at SLAC. References J. About the Author: Michael Zeller

Design Research Techniques | Case Studies Authour: Thuy Linh Do Edited by Christine Keene Overview Secondary Research is a common research method; it involves using information that others have gathered through primary research. Advantages The information already exists and is readily available -> quick & low cost Helps guide the focus of any subsequent primary research being conducted Internal secondary data […] Authours: Jeff Ranson & Margaret Lahn Edited by Christine Keene Problem Innovations communicated verbally are often difficult to imagine. Since they are abstract ideas, it is difficult to get a sense of what they will look and feel like. Solution Rapid prototyping is the act of creating a low-fidelity object for the purpose of testing […] Authour:Alex Leitch Edited by Christine Keene Overview Rapid prototyping with CNC tools is a continuation of the sketch processes to develop a physical product. Authour: D.

2015 - PLoS One - RECORD Methods.pdf What else could the Higgs be? On July 4, scientists around the world popped open champagne bottles and toasted the culmination of nearly five decades of research. They had discovered a new particle, one that looked awfully similar to the long-sought Higgs boson. The Higgs boson has for decades been the last missing piece of the Standard Model of particle physics. “If it’s the Standard Model Higgs boson, the picture will be complete, but it won’t be satisfying,” says Eilam Gross, co-convener of the ATLAS Higgs physics group. As the theory tells it, particles gain mass by wading through a kind of force field. In return, the Higgs boson gains mass through its interactions with other particles—and through its interactions with itself. Interactions with one group of particles add huge amounts of mass to the Higgs, and interactions with another, smaller group of particles subtract it. If the particle is indeed a Higgs boson, theories beyond the Standard Model can account for its confusing mass. Extra dimensions: New worlds

Free Bibliography Generator - MLA, APA, Chicago citation styles Poisson Arrival Processes A commonly used model for random, mutually independent message arrivals is the Poisson process. The Poisson distribution can be obtained by evaluating the following assumptions for arrivals during an infinitesimal short period of time delta t The probability that one arrival occurs between t and t+delta t is t + o( t), where is a constant, independent of the time t, and independent of arrivals in earlier intervals. is called the arrival rate. The number of arrivals in non-overlapping intervals are statistically independent. The probability of two or more arrivals happening during t is negligible compared to the probability of zero or one arrival, i.e., it is of the order o( t). t + o( t). Arrival Rate The arrival rate is expressed in the average number of arrivals during a unit of time. Some Interesting Properties The probability Pn of n packet arrivals in a time interval T becomes (T)^nPn = ----- exp{-T} n! Applications

Does Some Deeper Level of Physics Underlie Quantum Mechanics? An Interview with Nobelist Gerard ’t Hooft | Critical Opalescence VIENNA—Over the past several days, I attended a fascinating conference that explored an old idea of Einstein’s, one that was largely dismissed for decades: that quantum mechanics is not the root level of reality, but merely a hazy glimpse of something even deeper. A leading advocate is Gerard ’t Hooft of Utrecht University, who shared the 1999 Physics Nobel for helping to assemble the Standard Model of particle physics (for which, rumor has it, another Nobel will be awarded tomorrow). He and I chatted over a lunch of beef goulash and maize stew, and I thought you’d be intrigued by what he had to say. ’t Hooft thinks the notorious randomness of quantum mechanics is just a front. One point in favor of such an approach is that far-flung particles can act in a coordinated way, which you wouldn’t expect if they were purely random. When I first chatted with ’t Hooft for an article eight years ago, he told me he wasn’t sure how to evade Bell’s reasoning. GM: Can you describe your theory?

Wikiversity

Related: