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Optimal choice of Reed-Solomon codes to protect against queuing losses in wireless networks

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The Journal of China Universities of Posts and Telecommunications 2009年第3期16卷 71-83页

作者： Claus bauer Dolby Laboratories 100 Potrero Avenue San Francisco

This article proposes algorithms to determine an optimal choice of the Reed-Solomon forward error correction （FEC） code parameters （n,k） to mitigate the effects of packet loss on multimedia traffic caused by buffer overflow at a wireless base station. A network model is developed that takes into account traffic arrival rates, channel loss characteristics, the capacity of the buffer at the base station, and FEC parameters. For Poisson distributed traffic, the theory of recurrent linear equations is applied to develop a new closed form solution of low complexity of the Markov model for the buffer occupancy. For constant bit rate （CBR） traffic, an iterative procedure is developed to compute the packet loss probabilities after FEC recovery.

关键词： FEC packet loss buffer occupancy Markov model

Sums of Five Almost Equal Prime Squares

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Acta Mathematica Sinica,English Series 2005年第4期21卷 833-840页

作者： Claus bauer Dolby Laboratories 100 Potrero AvenueSan FranciscoCA94103USA

Let Pi, 1≤i≤5, be prime numbers. It is proved that every integer N that satisfies N=5 （mod 24） can be written as N=p1^2＋p2^2＋P3^2＋p4^2 ＋p5^2, where │√N5-Pi│≤N^1/2-19/850＋∈.

关键词： Prime numbers Exponential sums L-functions

Large sieve inequality with sparse sets of moduli applied to Goldbach conjecture

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Frontiers of Mathematics in China 2017年第2期12卷 261-280页

作者： Claus bauer Dolby Laboratories Beijing 100020 China

We use the large sieve inequality with sparse sets of moduli to prove a new estimate for exponential sums over primes. Subsequently, we apply this estimate to establish new results on the binary Goldbach problem where... 详细信息

关键词： Three primes theorem exponential sums over primes sparse set ofmodules

Numerical tests of theoretical models describing ionization of H(1s) atom by linearly polarized flat pulse of laser radiation

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Chinese Physics B 2018年第9期27卷 254-261页

作者： Jarostaw H bauer Min Deng Katedra Fizyki Teoretycznej Wydzial Fizyki i lnformatyki Stosowanej Uniwersytetu LddzkiegoUI.Pomorska 149/153PL-90-236 LddlPoland State Key Laboratory o fLow-Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084China

We derive the well-known Coulomb correction factor for the Gordon-Volkov wave function describing an outgoing electron in the process of ionization in an intense laser field. Although rigorous treatment would limit its use only to laser fields much lower than the so-called barrier-suppression field, it appears that in practice the correction factor may be used also close to and even above this critical value of the laser field. We compare predictions of several analytical expressions describing ionization rate of the hydrogen atom in its ground state in the strong linearly polarized laser field. We also compare ionization probabilities obtained by integrating these ionization rates over a temporal envelope of the laser pulse with predictions based on the exact numerical solution to the time-dependent Schr ¨odinger equation.

关键词： laser fields ionization S-matrix Coulomb-Volkov wave function

Progress in Research and Development of Molten Chloride Salt Technology for Next Generation Concentrated Solar Power Plants

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Engineering 2021年第3期7卷 334-347页

作者： Wenjin Ding Thomas bauer Institute of Engineering Thermodynamics German Aerospace Center(DLR) Suttgart 70569Germany Institute of Enginering Thermodynamics Cemman Aerospace Center(DL.R)Cologne 51147Germany

Concentrated solar power(CSP)plants with thermal energy storage(TES)system are emerging as one kind of the most promising power plants in the future renewable energy system,since they can supply dispatchable and low-cost electricity with abundant but intermittent solar *** order to significantly reduce the levelized cost of electricity(LCOE)of the present commercial CSP plants,the next generation CSP technology with higher process temperature and energy efficiency is being *** TES system in the next generation CSP plants works with new TES materials at higher temperatures(>565℃)compared to that with the commercial nitrate salt *** paper reviews recent progressin research and development of the next generation CSP and TES *** is given on theadvanced'TES technology based on molten chloride salt mixtures such as MgCl_(2)/NaCl/KCl which hassimilar thermo-physical properties as the commercial nitrate salt mixtures,higher thermal stability(>800℃),and lower costs(<0.35USD·kg^(-1)).Recent progress in the selection/optimization of chloridesalts,determination of molten chloride salt properties,and corrosion control of construction materials(eg.,alloys)in molten chlorides is reviewed.

关键词： Solar energy Concentrated solarpower(CSP) Thermal energystorage(TES) Heat transferfluid(HTF) Supercritical carbondioxide(sCO2)power cycle Corrosion control

Chinese Medicine and Integrative Medicine in the United States

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Chinese Journal of Integrative Medicine 2015年第8期21卷 569-570页

作者： Brent A.bauer Mayo Complementary and Alternative Medicine Program Department of General Internal Medicine

Health wellness is a state of the homeostasis. Chinese medicine incorporate many concept including holistic medicine and individualized medicine to promote health wellness. Different domains of Chinese medicine were exclusively adopted after the first introduction of acupuncture to USA. Mayo as one of the best USA hospital created a foundation for the more widespread introduction of Chinese medicine into the US especially on the health wellness promotion.

关键词： prevention health wellness Chinese medicine

Synthesis of iron（ll） complexes with asymmetric N2O2 coordinating Schiff base-like ligands and their spin crossover properties

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Frontiers of Chemical Science and Engineering 2018年第3期12卷 400-408页

作者： Wolfgang bauer Tanja Ossiander Birgit Weber Department of Chemistry University of Bayreuth 95440 Bayreuth Germany

The synthesis of new Schiff base-like ligands with asymmetric substituents pattern and their iron complexes with pyridine as axial ligand is described. Two of the ligands and one of the iron（II） complexes were characterized by single crystal X-ray structure analysis. One of the the iron（II） complexes shows spin crossover behavior while the others remain in the high spin state. The influence of the reduced symmetry of the ligand on the properties of the complexes is discussed.

关键词： iron Schiffbase-like ligands magnetism spin crossover X-ray structures

Corrosion behavior of metallic alloys in molten chloride salts for thermal energy storage in concentrated solar power plants： A review

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Frontiers of Chemical Science and Engineering 2018年第3期12卷 564-576页

作者： Wenjin Ding Alexander Bonk Thomas bauer Institute of Engineering Thermodynamics German Aerospace Center (DLR) 70569 Stuttgart Germany Institute of Engineering Thermodynamics German Aerospace Center (DLR) 51147 Cologne Germany

Recently, more and more attention is paid on applications of molten chlorides in concentrated solar power （CSP） plants as high-temperature thermal energy storage （TES） and heat transfer fluid （HTF） materials due to their high thermal stability limits and low prices, compared to the commercial TES/HTF materials in CSP- nitrate salt mixtures. A higher TES/HTF operating temperature leads to higher efficiency of thermal to electrical energy conversion of the power block in CSP, however causes additional challenges, particularly increased corrosiveness of metallic alloys used as contain- ers and structural materials. Thus, it is essential to study corrosion behaviors and mechanisms of metallic alloys in molten chlorides at operating temperatures （500-800℃） for realizing the commercial application of molten chlorides in CSE The results of studies on hot corrosion of metallic alloys in molten chlorides are reviewed to understand their corrosion behaviors and mechanisms under various conditions （e.g., temperature, atmosphere）. Emphasis has also been given on salt purification to reduce corrosive impurities in molten chlorides and development of electrochemical techniques to in-situ monitor corrosive impurities in molten chlorides, in order to efficiently control corrosion rates of metallic alloys in molten chlorides to meet the requirements of industrial applications.

关键词： corrosion mechanisms impurities metallic corrosion salt purification electrochemical techniques

A combined method to model grain crushing with DEM

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Geoscience Frontiers 2020年第2期11卷 451-459页

作者： Jia Lin Erich bauer WeiWu Institute of Geotechnical Engineering University of Natural Resources and Life SciencesViennaAustria Institute of Applied Mechanics Graz University of TechnologyGrazAustria

This paper presents a combined method to model grain crushing effects with discrete element *** method combines the two most commonly used concepts to model grain crushing in DEM,*** replacement method and the agglomerate method,so that it is both accurate and *** method can be easily *** performance is shown by several DEM simulations of biaxial *** with different crush-abilities are *** simulation results with and without grain crushing are compared and *** change of grain size distribution due to grain crushing is also investigated.

关键词： Grain crushing Discrete element method Granular material