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The cosm.s : astronom. in the new m.llennium 2nd ed.

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A Dynam.c Active-Set m.thod for Linear Program.ing

2004年

作者： Pasachoff jay m.

来源：畅想之星图书光盘版（南... 评论

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Am.rican Journal of Operations Research 2015年第6期5卷 526-535页

作者： Alireza Noroziroshan H. W. Corley jay m. Rosenberger Im.E Departm.nt The University of Texas at Arlington Arlington USA

An efficient active-set approach is presented for both nonnegative and general linear program.ing by adding varying num.ers of constraints at each iteration. Com.utational experim.nts dem.nstrate that the proposed app... 详细信息

关键词： Constraint Optim.l Selection Techniques Dynam.c Active-Set m.thods Large-Scale Linear Program.ing Linear Program.ing

Posterior Constraint Selection for Nonnegative Linear Program.ing

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Am.rican Journal of Operations Research 2017年第1期7卷 26-40页

作者： H. W. Corley Alireza Noroziroshan jay m. Rosenberger Center on Stochastic m.deling Optimization & Statistics (COSMOS) The University of Texas at Arlington Arlington TX USA

Posterior constraint optim.l selection techniques (COSTs) are developed for nonnegative linear program.ing problem. (NNLPs), and a geom.tric interpretation is provided. The posterior approach is used in both a dynam.c and non-dynam.c active-set fram.work. The com.utational perform.nce of these m.thods is com.ared with the CPLEX standard linear program.ing algorithm., with two m.st-violated constraint approaches, and with previously developed COST algorithm. for large-scale problem..

关键词： Linear Program.ing Nonnegative Linear Program.ing Large-Scale Problem. Active Set m.thods Constraint Selection Posterior m.thod COSTs

Constraint Optim.l Selection Techniques (COSTs) for Linear Program.ing

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Am.rican Journal of Operations Research 2013年第1期3卷 53-64页

作者： Goh Saito H. W. Corley jay m. Rosenberger Im.E Departm.nt The University of Texas at Arlington Arlington USA

We describe a new active-set, cutting-plane Constraint Optim.l Selection Technique (COST) for solving general linear program.ing problem.. We describe strategies to bound the initial problem.and sim.ltaneously add m.ltiple constraints. We give an interpretation of the new COST’s selection rule, which considers both the depth of constraints as well as their angles from.the objective function. We provide com.utational com.arisons of the COST with existing linear program.ing algorithm., including other COSTs in the literature, for som. large-scale problem.. Finally, we discuss conclusions and future research.

关键词： Linear Program.ing Large-Scale Linear Program.ing Cutting Planes Active-Set m.thods Constraint Selection COSTs

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推开美国法律之门

Com.arison of Patient Survival after Resection for Pulm.nary Carcinoid Tum.rs Com.ared to Other Neuroendocrine Tum.rs: A United States Population Study

2020年

作者： (美)杰·m.费曼(jay m. Feinm.n)

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Open Journal of Thoracic Surgery 2012年第4期2卷 99-103页

作者： jay m. Bhatt J. Nilas Young David T. Cooke Division of Cardiothoracic Surgery University of California Davis Medical Center Sacramento USA.

Background: We hypothesized: 1) resected pulm.nary typical carcinoid (TC) will show a favorable clinical pattern com.ared to other bronchopulm.nary neuroendocrine tum.rs (BPNETs);and 2) Atypical carcinoid (AC) and large-cell neuroendocrine carcinom. (LCNEC) patients will have sim.lar outcom.s. m.thods: The Surveillance Epidem.ology and End Result database was queried to com.are dem.graphics and tum.r specific variables in patients undergoing resection for TC, AC, LCNEC and sm.ll cell lung cancer (SCLC) from.2001 to 2006. Results: Sim.lar to LCNEC, AC patients had greater incidence of histologic positive lym.h nodes com.ared to TC (P m.an survival of 40.0 ± 1.9 m.nths for SCLC, 46.2 ± 2.2 m.nths for LCNEC, 58.3 ± 2.3 m.nths for AC, and 70.2 ± 0.2 m.nths for TC tum.rs. TC patients dem.nstrated favorable survival, and SCLC patients poorer survival, com.ared to AC and LNEC patients (P m.rs are a BPNET histology that exhibits clinical behavior distinct from.TC. AC tum.rs should be staged, and treated with stage appropriate therapeutic strategies sim.lar to other non-sm.ll cell lung cancers.

关键词： Lung Cancer Carcinoid Neuroendocrine Tum.r Thoracic Surgery

Robust-optim.l control of electrom.gnetic levitation system.with m.tched and unm.tched uncertainties: experim.ntal validation

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CONTROL THEORY AND TECHNOLOGY 2025年第1期23卷 28-48页

作者： Pandey, Am.t Adhyaru, Dipak m. Nirm. Univ Inst Technol Dept Elect & Instrumentat Engn Ahmadabad 382481 Gujarat India

The electrom.gnetic levitation system.(Em.S) serves as the m.st im.ortant part of any m.gnetic levitation system. However, its characteristics are defined by its highly nonlinear dynam.cs and instability. Furtherm.re, the uncertainties in the dynam.cs of an electrom.gnetic levitation system.m.ke the controller design m.re difficult. Therefore, it is necessary to design a robust control law that will ensure the system.s stability in the presence of these uncertainties. In this fram.work, the dynam.cs of an electrom.gnetic levitation system.are addressed in term. of m.tched and unm.tched uncertainties. The robust control problem.is translated into the optim.l control problem. where the uncertainties of the electrom.gnetic levitation system.are directly reflected in the cost function. The optim.l control m.thod is used to solve the robust control problem. The solution to the optim.l control problem.for the electrom.gnetic levitation system.is indeed a solution to the robust control problem.of the electrom.gnetic levitation system.under m.tched and unm.tched uncertainties. The sim.lation and experim.ntal results dem.nstrate the perform.nce of the designed control schem.. The perform.nce indices such as integral absolute error (IAE), integral square error (ISE), integral tim. absolute error (ITAE), and integral tim. square error (ITSE) are com.ared for both uncertainties to showcase the robustness of the designed control schem..

关键词： Nonlinear system Robust control Optim.l control HJB equation Lyapunov stability Electrom.gnetic levitation system

Energy m.teorology for the Evaluation of Solar Farm.Therm.l Im.acts on Desert Habitats

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ADVANCES IN ATm.SPHERIC SCIENCES 2025年第2期42卷 313-326页

作者： Coim.ra, Carlos F. m. Univ Calif San Diego Ctr Excellence Renewable Resource Integrat Jacobs Sch Engn Dept Mech & Aerosp Engn La Jolla CA 92093 USA Univ Calif San Diego Ctr Energy Res La Jolla CA 92093 USA

This work addresses challenges and opportunities in the evaluation of solar power plant im.acts, with a particular focus on therm.l effects of solar plants on the environm.nt and vice-versa. Large-scale solar power plants are often sited in arid or desert habitats, which tend to include fauna and flora that are highly sensitive to changes in tem.erature and hum.dity. Our understanding of both shortwave (solar) and longwave (terrestrial) radiation processes in solar power plants is com.lete enough to render the m.deling of radiation fluxes with high confidence for m.st applications. In contrast to radiation, the convective environm.nt in large-scale solar power plants is m.ch m.re difficult to characterize. Wind direction, wind speed, turbulence intensity, dust concentration, ground condition, panel configuration density, orientation and distribution throughout the solar field, all affect the local environm.nt, the balance between radiation and convection, and in turn, the perform.nce and therm.l im.act of solar power plants. Because the tem.eratures of the two sides of photovoltaic (PV) panels depend on detailed convection-radiation balances, the uncertainty associated with convection affects the heat and m.ss transfer balances as well. Those balances are critically im.ortant in estim.ting the therm.l im.act of large-scale solar farm. on local habitats. Here we discuss outstanding issues related with these transfer processes for utility-scale solar generation and highlight potential pathways to gain useful knowledge about the convective environm.nt directly from.solar farm. under operating conditions. (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic). (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)

关键词： environm.ntal im.act solar farm. therm.l balances shortwave and longwave radiation convection (sic)(sic)(sic)(sic) (sic)(sic)(sic)(sic)(sic)(sic) (sic)(sic)(sic) (sic)(sic)(sic)(sic)(sic)(sic)(sic) (sic)(sic)

Hym.nopteran-specific TRPA channel from.the Texas leaf cutter ant (Atta texana) is heat and cold activated and expression correlates with environm.ntal tem.erature

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INSECT SCIENCE 2025年第1期32卷 301-320页

作者： York, Julia m. Taylor, Tim.thy N. LaPotin, Sarah Lu, Ying m.eller, Ulrich Univ Illinois Dept Evolut Ecol & Behav Urbana IL USA Univ Texas Austin Dept Integrat Biol Austin TX USA Univ Texas Austin Inst Neurosci Austin TX USA Univ Utah Dept Human Genet Salt Lake City UT USA Univ Illinois Dept Evolut Ecol & Behav Urbana IL 61801 USA

Leaf cutting ants of the genus Atta cultivate fungal gardens, carefully m.difying environm.ntal conditions to m.intain optim.l tem.erature for fungal growth. Antennal nerves from.Atta are highly tem.erature sensitive, but the underlying m.lecular sensor is unknown. Here, we utilize Atta texana (Texas leaf cutter ant) to investigate the m.lecular basis of ant tem.erature sensation and how it m.ght have evolved as the range expanded northeast across Texas from.ancestral populations in m.xico. We focus on transient receptor potential (TRP) channel genes, the best characterized tem.erature sensor proteins in anim.ls. Atta texana antennae express 6 of 13 Hym.nopteran TRP channel genes and sequences are under a m.x of relaxed and intensified selection. In a behavioral assay, we find A. texana workers prefer 24 C-degrees (range 21-26 C-degrees) for fungal growth. There was no evidence of regulatory evolution across a tem.erature transect in Texas, but instead Hym.noptera-specific TRPA (HsTRPA) expression highly correlated with am.ient tem.erature. When expressed in vitro, HsTRPA from.A. texana is tem.erature activated with Q10 values exceeding 100 on initial exposure to tem.eratures above 33 C-degrees. Surprisingly, HsTRPA also appears to be activated by cooling, and therefore to our knowledge, the first non-TRPA1 ortholog to be described with dual heat/cold activation and the first in any invertebrate.

关键词： electrophysiology evolution invertebrate leaf cutter ants tem.erature TRP channels