238,263 research outputs found
Normalized solutions for fractional nonlinear scalar field equations via Lagrangian formulation
No full textWe study existence of solutions for the fractional problem (Pm)
(−Δ)su + μu = g(u) in RN,
RN
u2dx = m,
u ∈ Hs
r (RN),
where N 2, s ∈ (0, 1), m > 0, μ is an unknown Lagrange multiplier and
g ∈ C(R,R) satisfies Berestycki–Lions type conditions. Using a Lagrangian
formulation of the problem (Pm), we prove the existence of a weak solution
with prescribed mass when g has L2 subcritical growth. The approach relies on
the construction of a minimax structure, by means of a Pohozaev’s mountain in
a product space and some deformation arguments under a new version of the
Palais–Smale condition introduced in Hirata and Tanaka (2019 Adv. Nonlinear
Stud. 19 263–90); Ikoma and Tanaka (2019 Adv. Differ. Equ. 24 609–46). A
multiplicity result of infinitely many normalized solutions is also obtained if g
is odd
Intern experience at CH���M Hill, Inc.: an internship report
No full textIncludes author's vita"Submitted to the College of Engineering of Texas A&M University in partial
fulfillment of the requirement for the degree of Doctor of Engineering."Includes bibliographical referencesA review of the author's internship experience with CH���M HILL, Inc.
during the period September 1975 through May 1976 is presented. During this nine month
internship the author worked as an Engineer II in the Industrial Processes discipline of this
large consulting engineering firm... The author's prime responsibility was as one of three
lead design engineers on the design of a large wastewater treatment facility for a pulp mill
in Hoquiam, Washington owned by ITT Rayonier Inc. The work generally consisted of the design
of individual treatment units and associated piping and pumping. The purpose of the project
was to provide wastewater treatment capabilities that would satisfy the effluent limitations
(standards) imposed upon the mill by the State of Washington Department of Ecology and the
U.S. Environmental Protection Agency. The author's assignment also entailed necessary
interaction with the project manager and other CH���M HILL design engineers and support staff
members, the client's representatives, and representatives of two other consulting engineering
firms working on the project. Thus, the internship position at CH���M HILL provided considerable
experience coordinating the author's work with the work of other engineers, guiding the design
and administrative efforts of a support staff, and interacting regularly with the client and
other consulting firms. This broad exposure to a variety of engineering and organizational
problems provided a valuable educational experience
Simulation of thermal plant optimization and hydraulic aspects of thermal distribution loops for large campuses
No full textFollowing an introduction, the author describes Texas A&M University and its utilities system. After that, the author presents how to construct simulation models for chilled water and heating hot water distribution systems. The simulation model was used in a $2.3 million Ross Street chilled water pipe replacement project at Texas A&M University. A second project conducted at the University of Texas at San Antonio was used as an example to demonstrate how to identify and design an optimal distribution system by using a simulation model. The author found that the minor losses of these closed loop thermal distribution systems are significantly higher than potable water distribution systems. In the second part of the report, the author presents the latest development of software called the Plant Optimization Program, which can simulate cogeneration plant operation, estimate its operation cost and provide optimized operation suggestions. The author also developed detailed simulation models for a gas turbine and heat recovery steam generator and identified significant potential savings. Finally, the author also used a steam turbine as an example to present a multi-regression method on constructing simulation models by using basic statistics and optimization algorithms. This report presents a survey of the author??s working experience at the Energy Systems Laboratory (ESL) at Texas A&M University during the period of January 2002 through March 2004. The purpose of the above work was to allow the author to become familiar with the practice of engineering. The result is that the author knows how to complete a project from start to finish and understands how both technical and nontechnical aspects of a project need to be considered in order to ensure a quality deliverable and bring a project to successful completion. This report concludes that the objectives of the internship were successfully accomplished and that the requirements for the degree of Degree of Engineering have been satisfied
Cirrhigaleus Tanaka 1912
No full textGenus Cirrhigaleus Tanaka, 1912 Roughskin Dogfishes Cirrhigaleus Tanaka, 1912: 151. Type species: Cirrhigaleus barbifer Tanaka, 1912. Type by original designation (also monotypic).Published as part of Ebert, David A., Wintner, Sabine P. & Kyne, Peter M., 2021, An annotated checklist of the chondrichthyans of South Africa, pp. 1-127 in Zootaxa 4947 (1) on page 20, DOI: 10.11646/zootaxa.4947.1.1, http://zenodo.org/record/461456
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
M-regularity and the fourier-mukai transform
No full textThis is a survey of M-regularity and its applications, expanding on lectures given by the second author at the Seattle conference, in August 2005, and at the Luminy workshop "Geometrie Algebrique Complexe", in October 2005
The long-wavelength view of GG Tau A: rocks in the ring world
No full textWe present the first detection of GG Tau A at centimetre wavelengths, made with the Arcminute Microkelvin Imager Large Array at a frequency of 16 GHz (λ = 1.8 cm). The source is detected at >6 σrms with an integrated flux density of S16GHz = 249 ± 45 µJy. We use these new centimetre-wave data, in conjunction with additional measurements compiled from the literature, to investigate the long-wavelength tail of the dust emission from this unusual protoplanetary system. We use an MCMC-based method to determine maximum likelihood parameters for a simple parametric spectral model and consider the opacity and mass of the dust contributing to the microwave emission. We derive a dust mass of Md ~ 0.1 Msun, constrain the dimensions of the emitting region and find that the opacity index at λ > 7 mm is less than unity, implying a contribution to the dust population from grains exceeding ~4 cm in size. We suggest that this indicates coagulation within the GG Tau A system has proceeded to the point where dust grains have grown to the size of small rocks with dimensions of a few centimetres. Considering the relatively young age of the GG Tau association in combination with the low derived disc mass, we suggest that this system may provide a useful test case for rapid core accretion planet formation models
Alopecosa moriutti Tanaka 1985
No full textAlopecosa moriutti Tanaka, 1985 ** Tanaka, 1985: f. 21-24; Paik, 1988: f. 43-49. Material examined: 2 ♀♀, [21] Khasan Distr, env..of Andreevka Vill, 42º35—36'N 131º13'E, 11- 15.08.1998, YM. COMMENTS. The first record in Russia, known only from Japan and Korea [Paik, 1988].Published as part of Marusik, Yuri M. & Koponen, Seppo, 2000, New data on spiders (Aranei) from the Maritime Province, Russian Far East, pp. 55-68 in Arthropoda Selecta 9 (1) on page 63, DOI: 10.5281/zenodo.82271
Pirata yaginumai Tanaka 1974
No full textPirata yaginumai Tanaka, 1974 * Tanaka, 1974: f. 7-10. Material examined: 2 ♂♂ ' 2 ♀♀, Ussuriysky Reserve, Koma rovo-Zapovednoe, 43º39'N 132º20.7'E, 22- 29.07.1999, YS. COMMENTS. The first record in the province. In Russia, known earlier only from Sakhalin Island [Marusik etal., 1992b]. Also found in Japan, Korea and China [Song et al., 1999].Published as part of Marusik, Yuri M. & Koponen, Seppo, 2000, New data on spiders (Aranei) from the Maritime Province, Russian Far East, pp. 55-68 in Arthropoda Selecta 9 (1) on page 64, DOI: 10.5281/zenodo.82271
Levi-Tanaka algebras and homogeneous CR manifolds
No full textIn this paper we take up the problem of discussing CR manifolds of arbitrary CR codimension. We closely follow the general method of N. Tanaka, while concentrating our attention to the case of manifolds endowed with partial complex structures. This study required a deeper understanding of the structure of the Levi-Tanaka algebras, which are the canonical prolongation of pseudocomplex fundamental graded Lie algebras. These algebras enjoy special properties, the understanding of which provided also a way to build up several different examples and points to a rich field of investigations. Here we restrained further our consideration to the homogeneous models
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