162,324 research outputs found
Complex charge distributions of dielectric dust grains due to plasma flow
No full textWe examine the charging of dielectric dust grains embedded in a
plasma. Our work is a continuation and refinement of our previous research into
grain charging problems. In 1993, we discussed preliminary simulation results
regarding the charging and intergrain forces between two dielectric dust
particles [J. W. Manweiler et al., Adv. Space Res. 13,
10175 (1993)]. Then, in
1996, we discussed preliminary results with respect to dust grain charging
within asymmetric plasma conditions and how these affect grain–grain
collisional cross-sections [J. W. Manweiler et al., In: The Physics of Dusty
Plasmas (ed. P. K. Shukla et al.), p. 22. World Scientific, Singapore (1996)].
This work was extended to evaluate how asymmetric charging affects
coagulation rates for dielectric dust grains [J. W. Manweiler et al., In: Physics
of Dusty Plasmas, 7th Workshop (ed. M. Horanyi et al.), p. 12. AIP Conf. Proc.
446 (1998)]. Here we report on the results of a significant refinement to our work
to study the behaviour of a dielectric dust grain in a plasma with a bulk flow.
Since charge transport is inhibited on our dielectric grains, we can examine how
asymmetric plasma distributions affect the symmetry of the charge distributions
that develop on the surfaces of the grains. A dielectric dust grain in
a flowing plasma develops a negative total charge and a dipole moment in its
charge distribution that points upstream. We also use this model to study how
the presence of a nearby dust grain affects the development of a grain's charge
distribution. We demonstrate that a smaller grain–grain separation results in a
reduced net charge on each grain. For grains in a flowing plasma, dipole
moments are unaffected by close approach except when one grain is directly in
the ‘wake’ of the other grain. The studies here show that monopole and dipole
electrostatic forces are present when dust is bathed in flowing plasma. Recent
infrared studies suggest that a large fraction of young stars have dusty
envelopes [G. Schilling, Science286, 66 (1999)].
In the formation of accretion
discs around young stars, dust–plasma interactions are probably important.
Full details on the calculations of the results discussed in this paper are
summarized from a more complete treatment of the subject by Manweiler [PhD
Dissertation, University of Kansas (1997)].</jats:p
[Report to Chief J. E. Curry, by an unknown author #1]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
[Report to Chief J. E. Curry, by an unknown author #2]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
Murder on the mountain: author talk with Peter J. Wosh
No full textAuthor talk by Peter J. Wosh on May 5th, 2022, on his book, "Murder on the Mountain: crime, passion, and punishment in gilded age New Jersey.
Mr. Melvin J. Collier, RWWL AUC, June 2011
No full textThis video is a conversation with Mr. Melvin J. Collier. Mr. Collier talks about his book, "From Mississippi to Africa: A Journey of Discovery". Daniel Le, AUC Woodruff Library, is the interviewer
A Tripartite Post-Recession Rebalancing
No full textIn this latest Advance & Rutgers Report, entitled “A Tripartite Post-Recession Rebalancing,” Dean James W. Hughes and Professor Joseph J. Seneca deliver an incisive assessment of the current market conditions and obstacles in the path of our economic recovery. They offer a statistical cautionary tale that the private and public sector need to hear and acknowledge in order for the economy to make continued progress.This report was published as Issue Paper Number 7, November 2011, in Advance & Rutgers Report
Evidence for the decay B0→J/ψω and measurement of the relative branching fractions of meson decays to J/ψη and J/ψη′
No full textFirst evidence of the B 0 → J / ψ ω decay is found and the B s 0 → J / ψ η and B s 0 → J / ψ η ′ decays are studied using a dataset corresponding to an integrated luminosity of 1.0 fb -1 collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The branching fractions of these decays are measured relative to that of the B 0 → J / ψ ρ 0 decay:frac(B (B 0 → J / ψ ω), B (B 0 → J / ψ ρ 0)) = 0.89 ± 0.19 (stat) - 0.13 + 0.07 (syst),frac(B (B s 0 → J / ψ η), B (B 0 → J / ψ ρ 0)) = 14.0 ± 1.2 (stat) - 1.5 + 1.1 (syst) - 1.0 + 1.1 (frac(f d, f s)),frac(B (B s 0 → J / ψ η ′), B (B 0 → J / ψ ρ 0)) = 12.7 ± 1.1 (stat) - 1.3 + 0.5 (syst) - 0.9 + 1.0 (frac(f d, f s)), where the last uncertainty is due to the knowledge of f d / f s, the ratio of b-quark hadronization factors that accounts for the different production rate of B 0 and B s 0 mesons. The ratio of the branching fractions of B s 0 → J / ψ η ′ and B s 0 → J / ψ η decays is measured to befrac(B (B s 0 → J / ψ η ′), B (B s 0 → J / ψ η)) = 0.90 ± 0.09 (stat) - 0.02 + 0.06 (syst)
The vanishing author in computer-generated works: a critical analysis of recent Australian case law
No full textAbstract
The use of software is ubiquitous in the creation of many copyright works, yet the requirement in copyright law that every work have a human author who engages in independent intellectual effort means that its use may prevent copyright subsistence. Several recent Australian cases have refocused attention on authorship as an essential criterion of copyright subsistence, and these cases suggest that much computer-produced output may be authorless and thus lack copyright protection. This article, the first in a two-part series, analyses how each case deals with the question of authorship of computer-produced works and why the use of software diminishes copyright protection for a significant number of computer-generated works. The article critiques the application of conventional notions of human authorship developed in the pre-computer age to modern productions and suggests alternative approaches to authorship that satisfy both the major objectives of copyright policy and the need to adapt to the computer age. The article argues that, without a broader judicial approach to authorship of computer-generated works, Parliament must remedy the lacuna in protection for these ‘authorless’ works. Possible solutions for reform are suggested. In a forthcoming article, the author comprehensively examines those reform proposals
(Bouché)
No full textAbstract— The effect of nematode Steinernema carpocapsae on cat flea larvae and pupae in different substrates was studied. Nematode application to potting soil, sand, or gravel substrates containing flea eggs, larvae or pupae reduced adult flea emergence; the effects on sand and gravel were equivalent to and greater than the effects on soil. To determine if the cat flea cocoon provides protection from nematodes, pupae in cocoons of silk, sand and silk, or naked (without cocoons) were placed in close proximity to nematodes. All pupae in cocoons or naked were susceptible to nematode attack. When nematode numbers were increased from one to 25 per cocoon the chance for flea infections also increased. Résumé— Les effets du nématode steinerma carpocapsae sur les larves et nymphes de puces de chat dans différents substrats sont étudiés, L\u27application de némadodes sur des substrats de terre, de sable ou de gravier contenant des oeufs de puces, des larves ou des nymphes, réduit l\u27émergence de puces adultes; les effets sur le sable ou le gravier sont identiques et supérieurs à ceux obtenus lors d\u27application sur de la terre. Pour déterminer si le cocon de la puce de chat fournit une protection contre les nématodes, des nymphes dans des cocons de soie, de sable et de soie, ou nues sont placées à proximité des nématodes. Toutes les nymphes nues ou dans des cocons sont sensibles aux attaques des nematodes. Quand le nombre de nématodes par cocon est augmenté de un à 25 la probabilité d\u27infection des puces est également augmentée. [Henderson, G., Manweiler, S. A., Lawrence, W. J., Templeman, R. J., Foil, L. D. The effects of Steinernema carpocapsae (Weiser) application to different life stages on adult emergence of the cat flea Ctenophalides felis (Bouché) (Les effets de l\u27application de steinerma carpocapsae (Weiser) à différentes phases du cycle sur l\u27émergence de l\u27adulte de la puce du chat ctenocephalides felis (Bouché)). Resumen— Se estudió el efecto del nemátodo Steinernema carpocapsae en las larvas y crisálidas de la pulga del gato en diferentes substratos. La aplicación del nemátoto en la tierra, arena o grava para deposiciones con huevos, larvas o crisálidas de pulga redució la salida del adulto; los efectos sobre la arena o grava fueron similares y superiores a los efectos sobre la tierra. Para determinar si el capullo de la pulga del gato protege de los nemátodos, se colocaron crisálidas en capullos de seda, de seda y arena y desnudas (sin capullos) muy cerca de los nemátodos. Todas las crisálidas en capullos o desnudas eran susceptibles al ataque de los nemátodos. Cuando se incrementaba el número de nemátodos de uno a 25 por capullo, también aumentaban las probabilidades de infestación de las pulgas. [Henderson, G., Manweiler, S. A., Lawrence, W. J., Templeman, R. J., Foil, L. D. The effects of Steinernema carpocapsae (Weiser) application to different life stages on adult emergence of the cat flea Ctenophalides felis (Bouché) (Efectos de la aplicación Steinernema carpocapsae (Weiser) a distintos estadios en la salida del adulto de la pulga del gato Ctenocephalides felis (Bouche)). Copyright © 1995, Wiley Blackwell. All rights reserve
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
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