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匹配条件: “ Time” ,找到相关结果约13812条。
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Causality and Reversibility in Irreversible Time:Book Review  [PDF]
M. L. Arushanov
Journal of Quantum Information Science (JQIS) , 2012, DOI: 10.4236/jqis.2012.21001
Abstract: From classical point of view the full description of a system is the sum of its parties descriptions. Quantum mechanics introduced essential correction in the classical view: the measurable properties of a particle ensemble can exceed the properties sum of its particles. It is impossible to describe such entangled states by the known local field equation. Now nonlocal quantum correlations are well known, they underlie quantum information science and have the practical applications already. On the other hand in macro-physics, in particular, in astrophysics and geophysics a lot of facts about distant dissipative processes correlations (including violating classical causality) not reducible to electromagnetic and gravitation interactions have been collected. These correlations could be explained by their nonlocal nature. Although thermo- dynamic limit now is already a subject of entanglement research, the mentioned large-scale processes have remained out of scope of quantum information. The book “Causality and Reversibility in Irreversible Time” by S. M. Korotaev is the first attempt to fill this gap.
Time Competition. The New Strategic Frontier  [PDF]
Chiara Demartini, Piero Mella
iBusiness (IB) , 2011, DOI: 10.4236/ib.2011.32020
Abstract: The acceleration of change necessitates strategies to control time, considered not only as a variable that influences the temporal evolution of phenomena but as one that directly influences phenomena itself. This study tries to present the logic of time compression and time to market, as well as the main instruments for the formulation of time-based strategies, not only by observing how the value of time is perceived as a contraction of production and distribution lead times but also by considering the choice of the most opportune moment to start a business and introduce (or withdraw) a new product. Starting from a discussion of time-based competition managerial approaches, this study develops a theoretical framework showing different time-based methodologies (JIT, MRP, OPT, FMS, PERT, HSM) that help management to adopt time-based strategies. It also puts forward a taxonomy of time-based strategies as well as a logical strategic path to time value.
Evaluation of Stress among 100 Moroccan Orthodontists  [PDF]
Lahcen Ousehal, Laila Lazrak, Karima Hassani
Open Journal of Stomatology (OJST) , 2011, DOI: 10.4236/ojst.2011.11001
Abstract: Stress is associated with many professions including dental surgery. It has been the subject of several studies. However, its evaluation in orthodontics has not been sufficiently studied. Some studies that have described the stressful aspects of dentistry have reported the involvement of orthodontists, but no studies have been conducted in Morocco. The purpose of this study is to evaluate professional stress in orthodontics in Morocco. We conducted a descriptive and sectional study through a survey distributed to one hundred private orthodontist practitioners in Casablanca, Morocco. Stress signs were observed in 44% of the orthodontists. The most prominent factors of stress in orthodontics are related to patients and time. Experience of practitioners has been identified as the only factor significantly influencing their perception of stress. Thus, clinical competence and proper management of practice are the best ways to deal with daily stress in orthodontic practice.
The asymmetry of time and the cellular world. Is immortality possible?  [PDF]
Roberto O. Aquilano
Journal of Biophysical Chemistry (JBPC) , 2011, DOI: 10.4236/jbpc.2011.21007
Abstract: I analyze the flow of time in this article, both in gross and in microscopic processes, with a well defined arrow of time, but as the amount of energy involved in the microscopic processes is so small, it is more difficult to argue that the entropy increases, and therefore the direction of time becomes confusing and undefined at the molecular level. Therefore, is cell immortality possible?
Time and Risk Entrepreneurial Characteristics of Growth: The Case of Persisted Light Industrial Prototypes  [PDF]
P. E. Petrakis
iBusiness (IB) , 2010, DOI: 10.4236/ib.2010.21002
Abstract: This article is about the role of entrepreneurial perception of time and risk vis à vis structural change and growth. Entrepreneurship is a basic constituent element of social capital which in turn is a productive lubricant of the growth process. Different structural entrepreneurial prototypes with respect to time and risk have different structural change effects. Those structural changes (and any structural changes) are not neutral as far as the implications of growth rate changes are concerned. Therefore the time and risk characteristics of active entrepreneurship are reflected in the growth process either in the form of structural change and/or in the form of growth rate change.
Distortion of Space and Time during Saccadic Eye Movements  [PDF]
M. Suzuki, Y. Yamazaki
Intelligent Information Management (IIM) , 2010, DOI: 10.4236/iim.2010.22011
Abstract: The space-time distortion perceived subjectively during saccadic eye movements is an associative phenomenon of a transient shift of observer’s visual frame of reference from one position to another. Here we report that the lines of subjective simultaneity defined as two spatially separated flashes perceived during saccades were nearly uniformly tilted along the physical time-course. The causality of the resulting space-time compression may be explained by the Minkowski space-time diagram in physics.
George Augustus Linhart—As a “Widely Unknown”Thermodynamicist  [PDF]
Ewgeni B. Starikov
World Journal of Condensed Matter Physics (WJCMP) , 2012, DOI: 10.4236/wjcmp.2012.22018
Abstract: The name of George Augustus Linhart is in fact “widely unknown”. In effect, he was a Viennese-born USA-American physicist-chemist, partially associated with the Gilbert Newton Lewis’ school of thermodynamics at the University of California in Berkeley. As a lone small boy, he had arrived (from Austria via Hamburg) at New York in 1896, but was officially USA-naturalized only in 1912. He was able to pick up English in the streets of New York and Philadelphia, when occasionally working as a waiter and/or as a tailor, just to somehow survive. But, nonetheless, he could successfully graduate a high school in about one year, and then went to the universities for his further education. After obtaining his BS from the University of Pennsylvania, he could manage getting both MA and then PhD from the Yale University, Kent Chemical Laboratory. George Augustus Linhart was afterwards definitely able to successfully work out the true foundations of thermodynamics and could thus outdistance many famous thermodynamicists of his time and even the later ones. Linhart's view of the Second Law of Thermodynamics was and is extremely fruitful. The interconnection of Linhart's ideas with those of Gilbert Newton Lewis, as well as with the modern standpoints is discussed here in detail.
Sleep Time Transfer  [PDF]
Xincun Chen
Psychology (PSYCH) , 2013, DOI: 10.4236/psych.2013.46072
Abstract:

The goal of the article is to definite that sleep with sufficient time and depth is a high quality sleep regardless of whether the sleep time changes or not. The author had conducted an experiment about sleep time. During the experiment, the author changed participants’ main sleep time four times. The result of the survey shows that participants take a few days to adapt to the new condition after their main sleep times have changed. It would not affect the recovery of the energy of the people even though the time point of their main sleep changes.

Variation of Altitude Observed on the Occasion of the Tohoku Earthquake (M = 9.0) Occurred on March 11, 2011  [PDF]
Pietro Milillo, Tommaso Maggipinto, Pier Francesco Biagi
Open Journal of Earthquake Research (OJER) , 2014, DOI: 10.4236/ojer.2014.31004
Abstract:

Since October 1, 2010, a GPS receiver is put into operation at Tokai (Japan) in an experiment on Neutrino Physics (T2K). A significant variation of the altitude was detected from the beginning of March 2011, so that it has made worthwhile to investigate the possibility that such variations could be correlated to the Tohoku earthquake. In order to investigate in details this possibility, we analyzed the GPS data collected during 2011 by GEONet the GPS Earth Observation Network (GEONET). GEONET is the GPS network of Japan and consists of 1240 permanent stations. Preliminary results of the analysis seemed to show ten days before the earthquake, some possible anomalous behaviors of the stations. These anomalous behaviors were particularly relevant for stations of the network near the epicentral area. While co-seismic and post-seismic variations are widely expected, the anomalies recorded about ten days before the earthquake could be seriously considered among short-term precursors of the earthquake. In order to confirm this possibility, more detailed studies have been performed. In particular, GEONET currently makes available only daily solutions of the stations coordinates. On the contrary, it is very important to improve the time resolution just to understand the features of the anomalies till the last hours before the Earthquake. For this reason, we have performed an analysis to evaluate the coordinates and movement on hourly basis so improving the time resolution.

Time Series Modelling with Application to Tanzania Inflation Data  [PDF]
Edward Ngailo, Eliab Luvanda, Estomih S. Massawe
Journal of Data Analysis and Information Processing (JDAIP) , 2014, DOI: 10.4236/jdaip.2014.22007
Abstract:

In this paper, time series modelling is examined with a special application to modelling inflation data in Tanzania. In particular the theory of univariate non linear time series analysis is explored and applied to the inflation data spanning from January 1997 to December 2010. Time series models namely, the autoregressive conditional heteroscedastic (ARCH) (with their extensions to the generalized autoregressive conditional heteroscedasticity ARCH (GARCH)) models are fitted to the data. The stages in the model building namely, identification, estimation and checking have been explored and applied to the data. The best fitting model is selected based on how well the model captures the stochastic variation in the data (goodness of fit). The goodness of fit is assessed through the Akaike Information Criteria (AIC), Bayesian Information Criteria (BIC) and minimum standard error (MSE). Based on minimum AIC and BIC values, the best fit GARCH models tend to be GARCH(1,1) and GARCH(1,2). After estimation of the parameters of selected models, a series of diagnostic and forecast accuracy test are performed. Having satisfied with all the model assumptions, GARCH(1,1) model is found to be the best model for forecasting. Based on the selected model, twelve months inflation rates of Tanzania are forecasted in sample period (that is from January 2010 to December 2010). From the results, it is observed that the forecasted series are close to the actual data series.

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