检索结果-南通市图书馆

A Note on Moments of Dividends

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Acta Mathematicae Applicatae Sinica 2011年第3期27卷 353-354页

作者： Hansjrg Albrecher Hans U.Gerber Professor of Actuarial Science Faculty of Business and EconomicsUniversity of LausanneCH-1015 LausanneSwitzerland and Faculty Member of the Swiss Finance Institute Distinguished Visiting Professor at the University of Hong Kong honorary Professor of Actuarial Science Faculty of Business and EconomicsUniversity of LausanneCH-1015 LausanneSwitzerland

We reconsider a formula for arbitrary moments of expected discounted dividend payments in a spectrally negative Lévy risk model that was obtained in Renaud and Zhou （2007, [4]） and in Kyprianou and Palmowski （2007... 详细信息

关键词： dividends barrier strategies stationary Markov process scale function

Predicting Dark Energy Survey Results Using the Flat Space Cosmology Model

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Modern Physics 2019年第9期10卷 1083-1089页

作者： Eugene Terry Tatum U.V.S.Seshavatharam Bowling Green KYUSA honorary faculty I-SERVEHyderabadIndia

The Flat Space Cosmology (FSC) model is utilized to show how this model predicts the value of the Hubble parameter at each epoch of cosmic expansion. Specific attention in this paper is given to correlating the observable galactic redshifts since the beginning of the “cosmic dawn” reionization epoch. A graph of the log of the Hubble parameter as a function of redshift z is presented as the FSC prediction of the pending Dark Energy Survey results. In the process, it is discovered that the obvious tension between the SHOES local Hubble constant value and the 2018 Planck Survey and the 2018 Dark Energy Survey global Hubble constant values may be explained by a time-variable, scalar, Hubble parameter acting in accordance with the FSC model.

关键词： Flat Space Cosmology Dark Energy Hubble Parameter SHOES Hubble Constant ΛCDM Concordance Model Cosmology Theory Early Universe

How a Realistic Linear <i>R<sub>h</sub>= ct </i>Model of Cosmology Could Present the Illusion of Late Cosmic Acceleration

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Physics 2018年第7期9卷 1397-1403页

作者： Eugene Terry Tatum U. V. S. Seshavatharam 760 Campbell Ln. Ste. Bowling Green KY USA honorary faculty I-SERVE Hyderabad India

Realistic FLRW cosmic coasting models which contain matter now appear to be a reasonable alternative in explaining the accumulated Supernova Cosmology Project data since 1998. In sharp contrast to the unrealistic original classic Milne universe, which was entirely devoid of matter, these modified Milne-type models containing matter, often referred to as realistic linear Rh = ct models, have rapidly become the primary competition with standard cosmology. This paper compares the expected relative luminosity distances and relative angular diameter distances for given magnitudes of redshift within these two competing models. A simple ratio formula is derived, which explains how expected luminosity distances and angular diameter distances for given magnitudes of redshift within a realistic Milne-type cosmic expansion could create the illusion (for standard model proponents) of cosmic acceleration where none exists.

关键词： Dark Energy Survey Cosmology Theory Cosmic Coasting Cosmic Flatness Type Ia Supernovae CMBR Flat Space Cosmology Milne Universe Theories

Temperature Scaling in Flat Space Cosmology in Comparison to Standard Cosmology

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Physics 2018年第7期9卷 1404-1414页

作者： Eugene Terry Tatum U. V. S. Seshavatharam 760 Campbell Ln. Ste. Bowling Green KY USA honorary faculty I-SERVE Hyderabad India

Flat Space Cosmology (FSC) is a mathematical model of universal expansion which has proven to be remarkably accurate in comparison to observations. Temperature scaling is redefined in this paper in terms of a new “Universal Temperature” Tu scale according to Tu = T 2, where T 2 is in K2. This rescaling puts FSC cosmic temperature, time, total matter mass, and Hubble radius on the same scale, covering roughly 60.63 logs of 10 from the Planck scale to the present scale. This paper focuses on the relatively subtle temperature curve differences between the FSC model and standard cosmology. These changes become more pronounced in the early universe. Recent observational studies of the early universe, particularly with respect to the “cosmic dawn” epoch, the first stars and first galaxies, have surprised standard model proponents as to how soon these events have occurred following the Big Bang. This paper suggests that, because the FSC model temperature/time curve is lower at each stage of cosmic time, FSC may actually be a better fit for the timing of these events.

关键词： Cosmology Theory General Relativity CMB Temperature Cosmic Flatness Black Holes Universal Temperature

How Flat Space Cosmology Models Dark Energy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Physics 2020年第10期11卷 1493-1501页

作者： Eugene Terry Tatum U. V. S. Seshavatharam Independent Researcher Bowling Green KY USA honorary faculty I-SERVE S. No-42 Hitech City Hyderabad India

Equations of Flat Space Cosmology (FSC) are utilized to characterize the model’s scalar temporal behavior of dark energy. A table relating cosmic age, cosmological redshift, and the temporal FSC Hubble parameter value is created. The resulting graph of the log of the Hubble parameter as a function of cosmological (or galactic) redshift has a particularly interesting sinuous shape. This graph greatly resembles what ΛCDM proponents have been expecting for a scalar temporal behavior of dark energy. And yet, the FSC Rh = ct model expansion, by definition, neither decelerates nor accelerates. It may well be that apparent early cosmic deceleration and late cosmic acceleration both ultimately prove to be illusions produced by a constant-velocity, linearly-expanding, FSC universe. Furthermore, as discussed herein, the FSC model would appear to strongly support Freedman et al. in the current Hubble tension debate, if approximately 14 Gyrs can be assumed to be the current cosmic age.

关键词： Flat Space Cosmology Dark Energy Hubble Parameter Galactic Redshift Rh = ct Model

Light Speed Expansion and Rotation of a Very Dark Machian Universe Having Internal Acceleration

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Astronomy and Astrophysics 2020年第3期10卷 247-283页

作者： U. V. S Seshavatharam S. Lakshminarayana honorary faculty I-SERVE Survey No-42 Hitech City Hyderabad India Department of Nuclear Physics Andhra University Visakhapatnam India

We present a Machian model of Quantum Cosmology with full dark matter and light speed expansion and rotation. During galaxy formation and evolution, fraction of dark matter transforms to visible matter with a relation of the form, m_vis = constant * (m_dark)2/3. Using this relation and replacing MOND’s “critical acceleration” with “current cosmic maximum angular acceleration”, galactic flat rotation speed range of (50 to 500) km/sec can be fitted well. Estimated flat rotation speeds of DD168, Milky Way and UGC12591 are 49.96 km/sec, 199.66 km/sec and 521.75 km/sec respectively. Based on these striking coincidences, it is possible to say that, MOND’s approach is implicitly connected with cosmological estimation of 95% invisible matter. With reference to SPARC data for flat rotation speeds and current cosmic maximum angular acceleration, galactic total mass can be estimated. Considering galactic total mass, galactic visible mass and dark mass can be estimated. Proceeding further, galactic working radii, angular velocity and visible matter density can be estimated. Estimated Milky Way’s effective radius is 293 kpc. Even though, this model is free from “big bang”, “inflation”, “dark energy”, “flatness” and “red shift” issues, at 2.722 K, estimated present Hubble parameter is 66.24 km/sec/Mpc, cosmic radius is 146.3 times of the Hubble radius, angular velocity is 146.3 times lower than the Hubble parameter and cosmic age is 146.3 times of the Hubble age. With future observations and advanced telescopes, it may be possible to see far distant galaxies and very old stars far beyond the current observable cosmic radius.

关键词： Planck Scale Machian Universe Speed of Light Galactic Dark Matter Galactic Visible Mass Galactic Visible Mass Density Cosmic Anisotropy Galactic Internal Acceleration Cosmic Graviton Wavelength

The Reduced Planck＇s Constant, Mach＇s Principle, Cosmic Acceleration and the Black Hole Universe

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Physical Science and Application 2012年第10期2卷 441-447页

作者： U.V. Satya Seshavatharam S. Lakshminarayana honorary faculty I-SERVE Alakapuri Hyderabad-35 AP India Department of Nuclear Physics Andhra University Visakhapatnam-03 AP India

Based on the Mach＇s principle and the characteristic mass of the present universe, Mo a c3/2GHo, it is noticed that, ＇rate of decrease in the laboratory fine structure ratio＇ is a measure of the cosmic rate of expansion. If the observed laboratory fine structure ratio is a constant, then, independent of the cosmic red shift and CMBR observations, it can be suggested that, at present there is no cosmic acceleration. Obtained value of the present Hubble constant is 70.75 Km/sec/Mpc. If it is true that, rate of decrease in temperature is a measure of cosmic rate of expansion, then from the observed cosmic isotropy it can also be suggested that, at present there is no cosmic acceleration. At present if the characteristic mass of the universe is, Mo = c3/2GHo and if the primordial universe is a natural setting for the creation of black holes and other non-perturbative gravitational entities, it is also possible to assume that throughout its journey, the whole universe is a primordial growing and light speed rotating black hole. At any time, if cot is the angular velocity, then cosmic radius is c/ω1 and cosmic mass is c3/2Gω1 Instead of the Planck mass, initial conditions can be addressed with the Coulomb mass = Mc = √/4xeoG At present, if ω1= H0 the cosmic black hole＇s volume density, observed matter density and the thermal energy density are in geometric series and the geometric ratio is 1 ＋ ln（M0 ＋Mc）.

关键词： Reduced Planck's constant cosmic mass CMB radiation cosmic acceleration primordial cosmic black hole.

The Current Status of Physical Therapy in China

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国康复医学杂志 2013年第6期28卷 493-501页

作者： Alice Jones Margot A Skinner honorary Professor Faculty of Health Sciences University of Sydney Adjunct Professor School of Rehabilitation Sciences Griffiths University Australia WCPT Executive Member World Confederation for Physical Therapy Deputy Dean School of Physiotherapy University of Otago Dunedin New Zealand Consultant China's Expert Committee of Internationalized Education for Physical Therapy Chinese Association of Rehabilitation Medicine

The current health system in China has evolved by embracing both traditional Chinese medicine and Western medicine. China is the only country in the world where the number of doctors is larger than the number of nurses but education programmes for other health professions like physical therapy have been slow to develop. In the case of physical therapy it was not until China won the bid for the Olympic Games that permission to establish the first physical therapy programme was granted. Since then China has undergone a period of rapid economic growth enabling many people to have a higher standard of living and improved health, but at the same time the country is faced with massive urbanization, industrialization, increasing environmental health threats, increased health disparities and an aging population. With the support of the Chinese Association of Rehabilitation Medicine, an increased investment by the Government in public health and rehabilitation and engagement of international education experts, entry-level education programmes for physical therapy have started to develop and there are now nine which are modeled, at least to some extent, on the World Confederation for Physical Therapy's international guidelines. The paper explores the development of physical therapy education in China and discusses possible options for the way forward so that as the demand for physical therapy to service 1.4 billion people grows, the profession is prepared and the standards expected of the entrylevel physical therapist will not be compromised.

关键词：医疗康复美国医疗卫生行业患者护理

Clues to the Fundamental Nature of Gravity, Dark Energy and Dark Matter

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Modern Physics 2018年第8期9卷 1469-1483页

作者： Eugene Terry Tatum U. V. S. Seshavatharam 760 Campbell Ln. Ste. 106 #161 Bowling Green KY 42104 USA honorary faculty I-SERVE Hyderabad India

This paper integrates the Flat Space Cosmology (FSC) model into the Friedmann equations containing a cosmological term. The Lambda term within this model scales according to 3H2t/c2 and 3/R2t. Use of the Bekenstein-Hawking definition of closed gravitational system total entropy provides for FSC cosmic parameter definitions in terms of . Cosmic time, radius, total matter mass-energy and vacuum energy in this model scale in exactly the same way as . This analysis opens the way for understanding gravity, dark energy and dark matter as being deeply connected with cosmic entropy. The recent theoretical work of Roger Penrose and Erik Verlinde is discussed in this context. The results of this FSC model analysis dovetail nicely with Verlinde’s work suggesting gravity as being fundamentally an emergent property of cosmic entropy. This emergent-property-of-entropy definition of gravity, if true, would also indicate that gravitational inertia, dark matter and dark energy are simply manifestations of cosmic entropy. Thus, they would likely have no identifiable connection to quantum physics, including the standard particle model.

关键词： Cosmology Theory Dark Energy Dark Matter Cosmic Entropy Entropic Arrow of Time Cosmic Inflation Black Holes Cosmological Constant Problem Emergent Gravity