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Search Results: 1 - 10 of 191058 matches for " G. Franklin "
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Towards a Mathematical Model for Elastic Wave Propagation in Granular Materials  [PDF]
Leonardo Trujillo, Vanessa Torres, Franklin Peniche, Leonardo Di G. Sigalotti
Engineering (ENG) , 2012, DOI: 10.4236/eng.2012.412A123

A theoretical model for the propagation of acoustic waves in dry granular media is presented within the framework of the nonlinear granular elasticity. An essential ingredient is the dependence of the elastic moduli on compression. For the purpose of illustration, we analyze the case of a time-harmonic plane wave propagation under isotropic compression. We derive explicit relations for the wave speed dependence with the confining pressure. The present approach provides an accurate description of acoustic wave propagation in granular packings and represents a powerful tool to interpret the results of current experiments.

NOEJOVICH, Héctor Los albores de la economía americana, prólogo de Ruggiero Romano; Pontificia Universidad Católica del Perú, Lima, 1996.
Franklin Pease G.Y.
Revista Economía , 1996,
Abstract: La rese a no presenta resumen.
Trustworthy Coordination of Web Services Atomic Transaction for Net Banking
Supriya Kurian,Ramya. G. Franklin
The SIJ Transactions on Computer Science Engineering & its Applications , 2013,
Abstract: Nowadays, in net banking sector they use 2PC protocol. But, it is problematic for single site failures. We have used the formal model of distributed commit protocols in the process algebra mCRL2. We applied this method to the Three-Phase Commit protocol and proved that it is erroneous for simultaneous site failures. For the security of transaction SOAP protocol is used. In this, user will enter their user id, password and one-time password for accessing their account. They can view all their transactions across all branches of Net Bank locations online and do transactions within the bank network. By using this, it is possible to make the transaction more fast and can reduce interruption. It will also protect the WS-AT (Web Service-Atomic Transaction) services. Useful for business applications based on transactional Web Services that require a high degree of dependability, security and trust.
Gravitational Lensing by Galaxy Quantization States
Franklin Potter,Howard G. Preston
Physics , 2004,
Abstract: We show how our theory of large-scale gravitational quantization explains the large angle gravitational lensing by galaxies without requiring "dark matter". A galaxy is treated as a collective system of billions of stars in each quantization state with each star experiencing an average gravitational environment analogous to that for nucleons in the atomic nucleus. Consequently, each star is in an approximate finite depth square well type of gravitational potential. The "effective potential" is shown to be about ten times greater than the Newtonian gravitational potential, so the gravitational lensing effects of a galaxy are about ten times greater also, in agreement with the measured gravitational lensing.
Exploring Large-scale Gravitational Quantization without h-bar in Planetary Systems, Galaxies, and the Universe
Howard G. Preston,Franklin Potter
Physics , 2003,
Abstract: We explore a theory of large-scale gravitational quantization, using the general relativistic Hamilton-Jacobi equation to create quantization conditions via a new scalar wave equation dependent upon the total mass and the total vector angular momentum only. Instead of h-bar, a local invariant quantity proportional to the total angular momentum dictates the quantization conditions. In the Schwarzschild metric the theory predicts eigenstates with quantized energy per mass and angular momentum per mass. We find excellent agreement to the orbital spacings of the satellites of the Jovian planets and to the planet spacings in the Solar System. For galaxies we derive the baryonic Tully-Fisher relation and the MOND acceleration, so galaxy velocity curves are explained without requiring 'dark matter'. For the universe, we derive a new Hubble relation that accounts for the accelerated expansion with a matter density at about 5% of the critical matter/energy density, with the remainder being large-scale quantization zero-point energy. A possible laboratory test is proposed.
Communicating the Results of Clinical Research to Participants: Attitudes, Practices, and Future Directions
David I Shalowitz ,Franklin G Miller
PLOS Medicine , 2008, DOI: 10.1371/journal.pmed.0050091
What counts as reliable evidence for public health policy: the case of circumcision for preventing HIV infection
Reidar K Lie, Franklin G Miller
BMC Medical Research Methodology , 2011, DOI: 10.1186/1471-2288-11-34
Abstract: Based on an analysis of two Cochrane reviews, one published in 2003 before the results of three RCTs, and one in 2009, we argue that if we rely solely on evidence from RCTs and exclude evidence from well-designed non-randomized studies, we limit our ability to provide sound public health recommendations. Furthermore, the bias in favor of RCT evidence has delayed research on policy relevant issues.This case study of circumcision and HIV prevention demonstrates that if we rely solely on evidence from RCTs and exclude evidence from well-designed non-randomized studies, we limit our ability to provide sound public health recommendations.Randomized controlled trials (RCTs) are widely regarded as the most scientifically rigorous method of evaluating the effect of interventions. However, there is an ongoing controversy over the relative merits of RCTs and non-randomized observational studies in assessing efficacy and guiding policy. According to the prevailing view, RCTs provide evidence far superior to observational studies. Evidence from observational studies by itself is reliable only if there is a very strong association between the intervention and the effect, such as a relative risk greater than 5 [1]. In the more usual case, one should rely on observational studies to evaluate efficacy only if for ethical or other reasons it is impossible to do an RCT. Evidence from observational studies may be useful to confirm that the results from RCTs apply in real life settings, but it can never, in the absence of a very strong association, provide conclusive evidence that an intervention causes an effect [2]. The main argument for this position is that adequate randomization is uniquely able to detect causation unbiased by confounding factors, because it balances known and unknown prognostic factors in the groups being compared.Those who criticize this hierarchical view maintain that no one study design has an absolute advantage over any other design. On the whole, the results
Evaluating the Role of Information and Communication Technology (ICT) Support towards Processes of Management in Institutions of Higher Learning
Michael Okumu Ujunju,G. Wanyembi,Franklin Wabwoba
International Journal of Advanced Computer Sciences and Applications , 2012,
Abstract: The role of Information and Communication Technology in achieving organization’s strategic development goals has been an area of constant debate, and as well perceived in different management dimensions. Most universities are therefore employing it (ICT) as a tool for competitive advantage to support the accomplishment of their objectives. Universities are also known to have branches or campuses that need strong and steady strategic plans to facilitate their steady expansion and growth. Besides, production of quality services from the various levels of management in these universities requires quality strategic plans and decisions. In addition, to realize the steady growth and competitive advantage, ICT not only has to be an additive but a critical component towards supporting management processes in the universities. This research sought to determine the role of ICT in supporting management processes in institutions of higher learning in Kenya. The research investigated how the different levels of management used ICT in their management processes and whether the use had any effect on management processes. The research further made recommendations to the universities on better use of ICTs in their management processes. A public university in Kenya was used as a case study in this research.
Comments on "Band gap and band parameters of InN and GaN from quasiparticle energy calculations based on exact-exchange density-functional theory" [Appl. Phys. Lett. 89, 161919 (2006)]
D. Bagayoko,L. Franklin,G. L. Zhao
Physics , 2011,
Abstract: An oversight of some previous density functional calculations of the band gaps of wurtzite and cubic InN and of wurtzite GaN by Rinke et al. [Appl. Phys. Lett. 89,161919, 2006] led to an inaccurate and misleading statement relative to limitations of density functional theory (DFT) for the description of electronic properties of these materials. These comments address this statement. In particular, they show that some local density approximation (LDA) calculations have correctly described or predicted electronic and related properties of these systems [Phys. Rev. B 60, 1563, 1999; J. Appl. Phys. 96, 4297, 2004, and 97, 123708, 2005]. These successful calculations solved self-consistently the system of equations defining LDA, i.e., the Kohn-Sham equation and the equation giving the ground state charge density in terms of the wave functions of the occupied states.
An LED pulser for measuring photomultiplier linearity
M. Friend,G. B. Franklin,B. Quinn
Physics , 2011, DOI: 10.1016/j.nima.2012.02.015
Abstract: A light-emitting diode (LED) pulser for testing the low-rate response of a photomultiplier tube (PMT) to scintillator-like pulses has been designed, developed, and implemented. This pulser is intended to simulate 80 ns full width at half maximum photon pulses over the dynamic range of the PMT, in order to precisely determine PMT linearity. This particular design has the advantage that, unlike many LED test rigs, it does not require the use of multiple calibrated LEDs, making it insensitive to LED gain drifts. Instead, a finite-difference measurement is made using two LEDs which need not be calibrated with respect to one another. These measurements give a better than 1% mapping of the response function, allowing for the testing and development of particularly linear PMT bases.
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