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Comparison of optimizers for model predictive thermal control of buildings

Ⅻ International Symposium on Small Particles and Inorganic Clusters

作者： S.Tomita j.u.andersen B.Concina P.Hvelplund S.BrФndsted Nielsen H.Cederquist j.jensen H.T.Schmidt H.Zettergren B.Manil B.A.Huber j.Rangama j.S.Forster Department of Physics and Astronomy University of Aarhus 8000 Aarhus C Denmark Department of Physics and Astronomy University of Aarhus 8000 Aarhus C Denmark Department of Physics and Astronomy University of Aarhus 8000 Aarhus C Denmark Department of Physics and Astronomy University of Aarhus 8000 Aarhus C Denmark Department of Physics and Astronomy University of Aarhus 8000 Aarhus C Denmark Physics Department Stockholm University SCFAB 106 91 Stockholm Sweden Physics Department Stockholm University SCFAB 106 91 Stockholm Sweden Physics Department Stockholm University SCFAB 106 91 Stockholm Sweden Physics Department Stockholm University SCFAB 106 91 Stockholm Sweden Centre interdisciplinarité de Recherche Ions Lasers rue Claude Bloch B.P.5133 14070 Caen Cedex 5 France Centre interdisciplinarité de Recherche Ions Lasers rue Claude Bloch B.P.5133 14070 Caen Cedex 5 France Centre interdisciplinarité de Recherche Ions Lasers rue Claude Bloch B.P.5133 14070 Caen Cedex 5 France Département de Physique Université de Montréal Montréal Québec H3C 317 Canada

＜正＞ The formation and energetics of gas-phase multiply charged anions is a subject that has attracted much attention over the past decade. One of the most interesting properties of a dianion is the existence of a Coulomb barrier due to the combination of two interactions, the short-range attraction between an electron and the molecular "core" and the long range Coulomb repulsion between the two excess electrons. The Coulomb barrier can even trap an electron with negative binding energy.

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Energy and AI 2024年第1期15卷 279-287页

作者： Torben andersen Department of physics Lund UniversityProfessorsgatan 1Lund22663Sweden

Considering recent developments in the energy sector,further reduction of electricity cost and flattening of the electric power demand curve are *** have focused on an autonomous electric heater control system that can easily be implemented in existing buildings without strict comfort *** are winter heating of warehouses and vacation homes,and heat drying of buildings under *** have set up a system that typically reduces electricity cost by about 40%on the basis of automatic weather and real time pricing *** system uses the building as an energy reservoir over periods with high electricity *** a model predictive control system,we compare use of a genetic algorithm,a particle swarm optimization,and a neural network for heater control,all working in a closed loop to reduce the influence of modeling *** have simulated the performance of the systems using realistic data and found that all three optimizers give about the same performance,varying only a few percent in ***,the computational and memory requirements of the neural network are much lower than for the other optimizers,so it is preferable for use with inexpensive *** carried out a full-scale experiment at a residential house and found agreement with simulation results.

关键词： Home energy management system Demand response Genetic algorithm Particle swarm optimization Neural network Model predictive control

Instantaneous frequency and wave mode identification in a magnetosheath using few spatial points

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Chinese Physics B 2013年第8期22卷 496-501页

作者： Nathaniel E u Beloff N George N j Department of Physics Akwa Ibom State UniversityNigeria university of Sussex Brighton UK

Observational data such as those obtained from the magnetosheath in the downstream of Earth＇s bow shock have waveforms that differ from those of sinusoidal signals. In practice, they are not even aggregates of sinusoidal signals. Therefore, the frequency decomposition for the data requires technique that will account for the time-varying features of the data that will lead to deduction of physical meaning of the observations. The combination of empirical mode decompo- sition （EMD） and Hilbert transform has been used for extracting the various contributing oscillatory modes （EMDs） and the instantaneous frequency determination （Hilbert transform） of every physically meaningful mode called intrinsic mode func- tion （IMF）. The resulting instantaneous frequencies are used to determine instantaneous wave vectors. The combination of the instantaneous frequencies and wave vectors is useful in the identification of wave modes based on the characteristics of the waves. The results show that EMD-Hilbert can be more reliable than simple Hilbert transform alone.

关键词： EMD-Hilbert transform instantaneous frequency and wave vector

Inter-relationship of Various Results in Analysis of （14.0 MeV／u） Pb＋Pb Reaction using Mica and CN-85 Track Detectors

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Chinese Physics Letters 2005年第1期22卷 69-71页

作者： F.N.Khattak E.u.Khan TabassumNasir j.j.Baluch F.u.Khan u.W.C. GomalUniversityDeraIsmailKhanPakistan RadiationPhysicsDivision PINSTECHNiloreIslamabadPakistan DepartmentofPhysics GomalUniversityDeraIsmailKhanPakistan

Two detector materials mica and cellulose-nitrate(CN)-85 have been used to study (14.0MeV/u) Pb + Pb reaction. Events of different multiplicities were registered in mica and CN-85 detectors using the 2π-geometry technique of solid state nuclear track detection. After removing the target material from the detectors the damaged trails in the detectors were revealed as tracks by proper chemical etching. The irradiated area of each sample was scanned and events of different multiplicities were traced. The binary events were bifurcated into elastic and inelastic events. The elastic binary events and three prong events, observed in the reaction, have been used to search out coefficients Cμν in the presence of both the detectors, for the reaction under study. using these coefficients 3- and 4-prong events have been analysed. From the detailed analysis of the results of (14.0MeV/u) Pb+Pb reaction, obtained from mica and CN-85 track detectors we observed a great resemblance of results obtained from the two detectors. Combining the results of both the detectors, we report some important outcomes.

关键词： CN-85轨迹探测器高能物理学铅原子碰撞反应固态

Optimal Site and Size of Distributed Generation Allocation in Radial Distribution Network using Multi-objective Optimization

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journal of Modern Power Systems and Clean Energy 2021年第2期9卷 404-415页

作者： Aamir Ali M.u.Keerio j.A.Laghari the Department of Electrical Engineering Quaid-E-Awam University of Engineering Science and TechnologyNawabshahPakistan

Distributed generation(DG)allocation in the distribution network is generally a multi-objective optimization *** maximum benefits of DG injection in the distribution system highly depend on the selection of an appropriate number of DGs and their capacity along with the best *** this paper,the improved decomposition based evolutionary algorithm(I-DBEA)is used for the selection of optimal number,capacity and site of DG in order to minimize real power losses and voltage deviation,and to maximize the voltage stability *** proposed I-DBEA technique has the ability to incorporate non-linear,nonconvex and mixed-integer variable problems and it is independent of local extrema *** order to validate the effectiveness of the proposed technique,IEEE 33-bus,69-bus,and 119-bus standard radial distribution networks are ***,the choice of optimal number of DGs in the distribution system is also *** simulation results of the proposed method are compared with the existing *** comparison shows that the proposed method has the ability to get the multi-objective optimization of different conflicting objective functions with global optimal values along with the smallest size of DG.

关键词： Distribution system distributed generation multi-objective optimization active power loss improved decomposition based evolutionary algorithm(I-DBEA)

The importance of combined radiation and endocrine therapy in locally advanced prostate cancer

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Asian journal of Andrology 2012年第2期14卷 245-246页

作者： Phiuip j Gray William u Shipley Harvard Radiation Oncology Program BostonMA 02114USA Department of Radiation Oncology Massachusetts General HospitalBostonMA 02114USA

The management of all stages of prostate cancer has become an increasingly com-plex task as new treatment paradigms are tested and the results of large randomized studies become available. Despite these advances, prostate cancer remains the second leading cause of cancer death and the seventh overall cause of death in men in the united States.

关键词： radiation endocrine therapy cancer

Diversity of wave structures to the conformable fractional dynamical model

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journal of Ocean Engineering and Science 2023年第5期8卷 559-572页

作者： u.Younas j.Ren State Key Laboratory of Power Grid Environmental Protection/Henan Academy of Big Data Zhengzhou UniversityZhengzhou 450001China

This manuscript examines the recently developed conformable three-dimensional Wazwaz-Benjamin-Bona-Mahony(3D-WBBM)equation’s dynamical behavior in terms of its spatial and temporal *** governing equation is stretch for the Korteweg-de-Vries equation that represents the unidirectional propagation of small amplitude long waves on the surface of hydro magnetic and acoustic waves in a channel,especially for shallow *** wave solutions of various types,such as kink and shock,as well as singleton,combined solitons,and complex solitons,are all ***,solutions to hyperbolic,exponential,and trigonometric functions are obtained through the use of recently developed methods,namely the Kudryashov method(KM),the modified Kudryashov method(MKM),and the new extended direct algebraic method(NEDAM).The study conducts a comparison of our findings to well-known findings,and concludes that the solutions reached here are ***,the earned results are sketched in different shapes to demonstrate their dynamics as a function of parameter *** can assert from the obtained results that the applied techniques are simple,vibrant,and quite well,and will be helpful tool for addressing more highly nonlinear issues in various of fields,especially in ocean and coastal ***,our findings are first step toward understanding the structure and physical behavior of complicated *** anticipate that our results will be highly valuable in bet-ter understanding the waves that occur in the *** feel that this work is timely and will be of interest to a wide spectrum of experts working on ocean engineering models.

关键词： Integrability Soliton solutions 3D-WBBM equation Kudryashov and modified Kudryashov method NEDAM

Instability of binary nanofluids with magnetic field

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Applied Mathematics and Mechanics(English Edition) 2015年第6期36卷 693-706页

作者： u.GuPTA j.SHARMA V.SHARMA Dr.S.S.Bhatnagar university Institute of Chemical Engineering and Technology Panjab University Energy Research Centre Panjab University Department of Mathematics Himachal Pradesh University

The present paper investigates the effects of a vertical magnetic field on the double diffusive nanofluid convection, The effects of the Brownian motion and ther- mophoresis due to the presence of nanoparticles and the effects of the Dufour and Sorer parameters due to the presence of solute are included in the investigated model. The normal mode technique is used to solve the conservation equations. For the analytical study, valid approximations are made in the complex expression for the Rayleigh number to get useful and interesting results. The bottom heavy binary nanofluids are more stable than the regular binary fluids, while the top heavy binary nanofluids are less stable than the regular binary fluids. The critical wave number and the critical Rayleigh number in- crease whereas the frequency of oscillation （for the bottom heavy configuration） decreases when the Chandrasekhar number increases. The numerical results for the alumina-water nanofiuid are studied by use of the MATHEMATICA software.

关键词： natural convection binary nanofluid Brownian motion thermophoresis,Chandrasekhar number

Cyclic Division Algebras with Non-norm Elements

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Algebra Colloquium 2014年第2期21卷 275-283页

作者： Cheng, j u Li Qin Yue Sunghan Bae Department of Mathematics Nanjing University of Aeronautics and Astronautics Nanjing 210016 China Department of Mathematics KAIST Tejon 305-701 Korea

In this paper, we construct some cyclic division algebras （K/F,σ,γ）. We obtain a necessary and sufficient condition of a non-norm elementγ provided that F = Q and K is a subfield of a cyclotomic field Q（ζpu）, where p is a prime and ζpu is a pu th primitive root of unity. As an application for space time block codes, we also construct cyclic division algebras （K/F,σ, γ）, where F = Q（i）, i = √-1, K is a subfield of Q（ζ4pu） or Q（ζ4pu1 pu2）, and γ = 1＋i. Moreover, we describe all cyclic division algebras （K/F, σ, γ） such that F = Q（i）, K is a subfield of L = Q（ζ4pu1, pu2） and γ= 1 ＋i, where [K： F] = φ（pu1 pu2）/d, d = 2 or 4, φ is the Euler totient function, and p1,p2 ≤ 100 are distinct odd primes.

关键词： non-norm element cyclic division algebra