1,721,480 research outputs found
Keith Inflated
Full text linkA Flipped Model for “Everything” below The Planck scale is presented.It is based on No-Scale
Supergravity x Flipped SU(5),both components derivable,in principle,from string theory and
providing: A SU(N,1) No-Scale Inflation ,avatarized as a Starobinsky -like model ,but with
distinctive differences and automatically embedded in Flipped SU(5),specific Cosmological
history of the Universe that leads to Supercosmology, strong reheating,controlled entropy
release,baryon asymmetry ,on the nose,through RH heavy neutrinos,neutrino masses/
mixings,in accordance with present data and stable enough protons,but reachable ,in near
future,lifetime,and a LHC attainable SUSY spectrum. Appropriately enough, Keith has played
a pivotal role on all the above ,who sounds like the end (???) result of 35 years group work...Nanopoulos, Dimitri. (2017). Keith Inflated. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/188216
Some problems of quantum cosmology and dark matter physics
No full textIn this thesis we study the quantum cosmology of the string universe obtained by embedding the Robertson-Walker metric in the non-linear model. We find that initially the universe exists in a series of metastable bound states with the scale factor taking discrete values. Then it tunnels through a barrier and comes out in an inflationary state. This tunneling (or evolution in imaginary time) also has the effect of heating up the matter field so that we have a condition of chaotic inflation. Our asymptotic solutions agree with those obtained from the classical Einstein equations.We consider quantum cosmology of a 4 dimensional universe using the effective action of superstrings. We apply both Hartle-Hawking and Vilenkin boundary conditions to the solution of Wheeler-DeWitt equation. We find that under certain conditions (fermions added) the universe will tunnel through to the Lorentzian regime from the Euclidean regime and time is dynamically generated.We apply Chudnovsky and Vilenkin's idea of possible existence of cosmic strings in the Sun. Stellar evolution with cosmic strings at solar age gives us a radius and luminosity of the star which are in contradiction with observation.We study the astrophysical bound on the change of gravitational constant with time. We find that \vert\dot G/G\vert < 10\sp{-12}yr\sp{-1} is the condition that has to be satisfied in order not to cause the conflict with observation.We study the effect of axions on the steller evolution of a 10 solar mass star model. If the axion mass is larger than.1 ev the star's age is significantly different at late stages, compared to the star without axions.We argue that if cosmions (or WIMPS) solve the solar neutrino problem, then they must also play an important role in the evolution of low mass star main sequence stars; If they do so, then a simple (long mean free path) model for the interaction of cosmions with baryons leads to changes in the structure of the nuclear-burning core which may in principle be observable.Made available in DSpace on 2011-05-07T12:43:04Z (GMT). No. of bitstreams: 2
license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5)
9211025.pdf: 3015640 bytes, checksum: 2f0fa437a67af60b67e8c514c6017906 (MD5)
Previous issue date: 1991Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding ([email protected]) on 2011-05-07T14:44:47Z
Item is restricted indefinitely.Restriction data tranferred 2014-07-01T11:19:45-05:00
Original Data
Group with Access UIUC Users [automated]
Release Date: none
Reason: ETDs are only available to UIUC Users without author permissionETDs are only available to UIUC Users without author permissionU of I Onl
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
The electric dipole moment of the neutron: a cosmic seismometer?
No full textOne of the most striking successes of Grand Unified Theories is the possibility of understanding, qualitatively and quantitatively the observed baryon asymmetry in the Universe GUTS contain all the basic ingredients for creating the baryon asymmetry, and the expanding Universe provides for free an excellent way to get out of equilibrium at the appropriate times. A very interesting question which is often asked is whether there is some connection between the observed low energy CP-violation in the K-system and the CP-violation operating at superhigh energies and thus responsible for the observed baryon asymmetry. The usual answer is no! Recently, J. Ellis, M.K. Gillard, S.Rudez and the author (Phys. Lett. B, vol.99, p.101, 1981) have done some work towards a connection that may exist between the magnitude of the (still unobserved) electric dipole moment of the neutron (d/sub n /) and the magnitude of the observed baryon asymmetry (n/sub B//n/sub gamma /). This is a review of that work, but with strong emphasis on the physical consequences of such a possible relation between d/sub n/ and (n/sub B//n/sub gamma /) and less discussion of the technical details that lead to such a connection. (24 refs)
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
- …
