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Title:

Omnidirectional reflection from the one-dimensional photonic crystal containing anisotropic left-handed material

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We study the transmission properties in the one-dimensional photonic crystal containing alternate anisotropic left-handed material (LHM) layers and regular isotropic right-handed material (RHM) layers. For such an anisotropic case, the dispersion relation from the Bloch theorem is derived and the Bragg gaps of the periodic structure are observed...

We study the transmission properties in the one-dimensional photonic crystal containing alternate anisotropic left-handed material (LHM) layers and regular isotropic right-handed material (RHM) layers. For such an anisotropic case, the dispersion relation from the Bloch theorem is derived and the Bragg gaps of the periodic structure are observed. It is found that in the m=0 Bragg gap, there is an omnidirectionally reflectional (ODR) region, which is also invariant with a change of scale length, similar with the <EquationSource Format="TEX">$\bar{n}=0$</EquationSource> gap in isotropic one-dimensional photonic crystal. With the aid of effective medium theory (EMT), the analytic expressions of all six elements of the effective electric permittivity tensor and magnetic permeability tensor are obtained. By using these results, we investigate the ODR region in the m=0 Bragg gap in all the possible cases of both TE and TM modes. We find that with different choices of parameters, the m=0 Bragg gap has different transmission properties, and the ODR region in it changes, consequently. The edges of the ODR region are given out in these cases. To one's interest, these results predict a complete reflection region in the m=0 Bragg gap, which is able to omnidirectionally reflect waves in both TE and TM modes. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2005 Minimize

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Second- and third-harmonic generations for a nondilute suspension of coated particles with radial dielectric anisotropy

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We derive expressions for the effective nonlinear susceptibility tensors for both the second harmonic generation (SHG) and induced third harmonic generation (THG) of nonlinear composite materials, in which nondilute coated particles with radial dielectric anisotropy are randomly embedded in the linear host. Two types of coated particles are cons...

We derive expressions for the effective nonlinear susceptibility tensors for both the second harmonic generation (SHG) and induced third harmonic generation (THG) of nonlinear composite materials, in which nondilute coated particles with radial dielectric anisotropy are randomly embedded in the linear host. Two types of coated particles are considered. The first is that the core possesses a second order nonlinear susceptibility and the shell is linear and radially anisotropic, while the second is that the core is linear with radial anisotropy and the shell has a second order nonlinear susceptibility. We observe greatly enhanced SHG and THG susceptibilities at several surface plasmon resonant frequencies. For the second model, due to the coating material being metallic, there exists two fundamental resonant frequencies ω c1 and ω c2 , whose difference ω c2 -ω c1 is strongly dependent on the interfacial parameter and the radial dielectric anisotropy. Furthermore, in both systems, the adjustment of the dielectric anisotropy results in larger enhancement of both SHG and induced THG susceptibilities at surface plasmon resonant frequencies than the corresponding isotropic systems. Therefore, both the core-shell structure and the dielectric anisotropy play important roles in determining the nonlinear enhancement and the surface resonant frequencies. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007 ; 42.65.An Optical susceptibility, hyperpolarizability, 42.79.Ry Gradient-index (GRIN) devices, 72.20.Ht High-field and nonlinear effects, 77.84.Lf Composite materials Minimize

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Title:

Elevation correction of ERA-Interim temperature data in complex terrain

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Air temperature controls a large variety of environmental processes, and is an essential input parameter for land surface models, for example in hydrology, ecology and climatology. However, meteorological networks, which can provide the necessary information, are commonly sparse in complex terrains, especially in high mountainous regions. In ord...

Air temperature controls a large variety of environmental processes, and is an essential input parameter for land surface models, for example in hydrology, ecology and climatology. However, meteorological networks, which can provide the necessary information, are commonly sparse in complex terrains, especially in high mountainous regions. In order to provide temperature data in an adequate temporal and spatial resolution for local scale applications a new elevation correction method has been developed that is able to downscale 3-hourly ERA-Interim temperature data. The scheme is based on model internal vertical lapse rates derived from different ERA-Interim pressure levels and has been validated for twelve meteorological stations in the German and Swiss Alps. The method was also compared with two other statistical, lapse rate based correction approaches. The results indicate that the use of model internal ERA-Interim lapse rates can significantly improve the downscaling performance when compared to the standard procedure of using fixed lapse rates. Minimize

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Copernicus GmbH

Year of Publication:

2012-12-01T00:00:00Z

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article

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English

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LCC:Environmental sciences ; LCC:GE1-350 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; DOAJ:Environmental Sciences ; DOAJ:Earth and Environmental Sciences ; LCC:Physical geography ; LCC:GB3-5030 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; DOAJ:Geography ; DOAJ:Earth and Environmental Sciences ; LCC:Environmental sciences ; LCC:GE1-...

LCC:Environmental sciences ; LCC:GE1-350 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; DOAJ:Environmental Sciences ; DOAJ:Earth and Environmental Sciences ; LCC:Physical geography ; LCC:GB3-5030 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; DOAJ:Geography ; DOAJ:Earth and Environmental Sciences ; LCC:Environmental sciences ; LCC:GE1-350 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; DOAJ:Environmental Sciences ; DOAJ:Earth and Environmental Sciences ; LCC:Physical geography ; LCC:GB3-5030 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; DOAJ:Geography ; DOAJ:Earth and Environmental Sciences ; LCC:Environmental sciences ; LCC:GE1-350 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; LCC:Physical geography ; LCC:GB3-5030 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; LCC:Environmental sciences ; LCC:GE1-350 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; LCC:Physical geography ; LCC:GB3-5030 ; LCC:Geography. Anthropology. Recreation ; LCC:G Minimize

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http://www.hydrol-earth-syst-sci.net/16/4661/2012/hess-16-4661-2012.pdf

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Title:

Downscaling ERA-Interim temperature data in complex terrain

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Air temperature controls a large variety of environmental processes, and is an essential input parameter for land surface models e.g. in hydrology, ecology and climatology. However, meteorological networks, which can provide the necessary information, are commonly sparse in complex terrains, especially in high mountainous regions. In order to pr...

Air temperature controls a large variety of environmental processes, and is an essential input parameter for land surface models e.g. in hydrology, ecology and climatology. However, meteorological networks, which can provide the necessary information, are commonly sparse in complex terrains, especially in high mountainous regions. In order to provide temperature data in an adequate temporal and spatial resolution for local scale applications, we have developed a new downscaling method able to scale 3-hourly ERA-Interim temperature data. The scheme is based on model internal vertical lapse rates derived from different ERA-Interim pressure levels. The results are validated for three meteorological stations, located within the same ERA-Interim grid element: Zugspitze, Garmisch-Partenkirchen and Zugspitzplatt, in the German Alps; they are also compared with two other statistical, lapse rate based downscaling approaches. The results indicate that the use of model internal ERA-Interim lapse rates can significantly improve the downscaling performance when compared to the standard procedure of using fixed lapse rates. Minimize

Publisher:

Copernicus GmbH

Year of Publication:

2012-05-01T00:00:00Z

Document Type:

article

Language:

English

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LCC:Physical geography ; LCC:GB3-5030 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; DOAJ:Geography ; DOAJ:Earth and Environmental Sciences ; LCC:Environmental sciences ; LCC:GE1-350 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; DOAJ:Environmental Sciences ; DOAJ:Earth and Environmental Sciences ; LCC:Physical geography ; LCC:GB3-5030...

LCC:Physical geography ; LCC:GB3-5030 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; DOAJ:Geography ; DOAJ:Earth and Environmental Sciences ; LCC:Environmental sciences ; LCC:GE1-350 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; DOAJ:Environmental Sciences ; DOAJ:Earth and Environmental Sciences ; LCC:Physical geography ; LCC:GB3-5030 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; DOAJ:Geography ; DOAJ:Earth and Environmental Sciences ; LCC:Environmental sciences ; LCC:GE1-350 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; DOAJ:Environmental Sciences ; DOAJ:Earth and Environmental Sciences ; LCC:Physical geography ; LCC:GB3-5030 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; LCC:Environmental sciences ; LCC:GE1-350 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; LCC:Physical geography ; LCC:GB3-5030 ; LCC:Geography. Anthropology. Recreation ; LCC:G ; LCC:Environmental sciences ; LCC:GE1-350 ; LCC:Geography. Anthropology. Recreation ; LCC:G Minimize

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http://www.hydrol-earth-syst-sci-discuss.net/9/5931/2012/hessd-9-5931-2012.pdf

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Abstract The nematophagous fungus Pochonia

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chlamydosporia (Clavicipitaceae) and entomopathogenic

chlamydosporia (Clavicipitaceae) and entomopathogenic Minimize

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The Pennsylvania State University CiteSeerX Archives

Year of Publication:

2013-11-07

Source:

http://www.im.ac.cn/UserFiles/File/2010/201011/Gao,L_2010-2-Mycopathologia.pdf

http://www.im.ac.cn/UserFiles/File/2010/201011/Gao,L_2010-2-Mycopathologia.pdf Minimize

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en

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Pochonia chlamydosporia Sporulation

Pochonia chlamydosporia Sporulation Minimize

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Abstract: In this research, several intelligent strategies have been developed to build up cooperative Process Planning and Scheduling (CPPS). Three game theory-based strategies have been introduced to analyse the cooperative integration of the two processes in a systematic way. To address the multiple constraints in the CPPS problem, a fuzzy lo...

Abstract: In this research, several intelligent strategies have been developed to build up cooperative Process Planning and Scheduling (CPPS). Three game theory-based strategies have been introduced to analyse the cooperative integration of the two processes in a systematic way. To address the multiple constraints in the CPPS problem, a fuzzy logic-based Analytical Hierarchical Process (AHP) technique has been applied. In the meantime, modern heuristic algorithms have been developed and applied to the CPPS problem to identify optimal or near-optimal solutions from the vast search space efficiently. Experiments have been conducted and results show the objectives of the research have been achieved. Minimize

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The Pennsylvania State University CiteSeerX Archives

Year of Publication:

2010-06-16

Source:

http://202.114.11.143/%7Egaoliang/IJMR%205103%20Li%20and%20Gao.pdf

http://202.114.11.143/%7Egaoliang/IJMR%205103%20Li%20and%20Gao.pdf Minimize

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text

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en

Subjects:

CPPS ; cooperative process planning and scheduling ; game theory

CPPS ; cooperative process planning and scheduling ; game theory Minimize

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Title:

On Balancing Computational Load on Rings of Processors

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We consider a simple, deterministic policy for scheduling certain genres of dynamically evolving computations --- specifically, computations in which tasks that spawn produce precisely two offspring --- on rings of processors. Such computations include, for instance, tree-structured branching computations. We believe that our policy yields good ...

We consider a simple, deterministic policy for scheduling certain genres of dynamically evolving computations --- specifically, computations in which tasks that spawn produce precisely two offspring --- on rings of processors. Such computations include, for instance, tree-structured branching computations. We believe that our policy yields good parallel speedup on most computations of the genre, but we have not yet been able to verify this. In the current paper, we show that when the evolving computations end up having the structure of complete binary trees or of twodimensional pyramidal grids, our strategy yields almost optimal parallel speedup. 1 Introduction 1.1 Motivation The promise of parallel computers to accelerate computation relies on the algorithm designer's ability to keep all (or most) of the computers' processors fruitfully occupied all (or most) of the time. The problem of balancing computational loads so as to approach this goal has received considerable attention sin. Minimize

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The Pennsylvania State University CiteSeerX Archives

Year of Publication:

2009-04-12

Source:

http://www.cs.umass.edu/~gao/cbtlb.ps

http://www.cs.umass.edu/~gao/cbtlb.ps Minimize

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text

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en

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Metadata may be used without restrictions as long as the oai identifier remains attached to it.

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Title:

An Adaptive Network/Routing Algorithm For Energy Efficient Cooperative Signal Processing In Sensor Networks

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In this paper, we describe an adaptive networklrouting algorithm that facilitates both coherent and non-coherent event-based cooperative signal processing. The core of this algorithm is a distributed election procedure that produces one or multiple winners based on a context-dependent election metric. In scenarios where non-coherent signal proce...

In this paper, we describe an adaptive networklrouting algorithm that facilitates both coherent and non-coherent event-based cooperative signal processing. The core of this algorithm is a distributed election procedure that produces one or multiple winners based on a context-dependent election metric. In scenarios where non-coherent signal processing techniques are applied, a central processing node is selected, and highly compressed sensor data will be gathered for processing. Energy efficiency is improved by reducing algorithm overhead because the actual sensor traffic volume is light compared to the messaging overhead of the algorithm. For coherent processing, raw data streams must be relayed from each sensor to the central processing node, producing large data streams. A multi-winner election process is initiated first to Minimize

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The Pennsylvania State University CiteSeerX Archives

Year of Publication:

2012-09-18

Source:

http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/11664/1/02-0225.pdf

http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/11664/1/02-0225.pdf Minimize

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text

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en

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TABLE OF CONTENTS

TABLE OF CONTENTS Minimize

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L.: 2002, `Analysis of energy consumption for ad hoc wireless sensor networks using a bit-meter-per-Joule metric

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In this article, we present a system-level characterization of the energy con-sumption for sensor network application scenarios. We compute a power efficiency metric—average watt-per-meter—for each radio transmission and extend this local metric to find the global energy consumption. This analysis shows how overall en-ergy consumption varies wit...

In this article, we present a system-level characterization of the energy con-sumption for sensor network application scenarios. We compute a power efficiency metric—average watt-per-meter—for each radio transmission and extend this local metric to find the global energy consumption. This analysis shows how overall en-ergy consumption varies with transceiver characteristics, node density, data traffic distribution, and base-station location. I. Minimize

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The Pennsylvania State University CiteSeerX Archives

Year of Publication:

2014-12-05

Source:

http://tmo.jpl.nasa.gov/progress_report/42-150/150L.pdf

http://tmo.jpl.nasa.gov/progress_report/42-150/150L.pdf Minimize

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Title:

Lower and Upper Bounds for the Probability that at least r and exactly r out . . .

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Lower and upper bounds are presented for the probability that at least r or exactly r out of n events occur, in terms of sums of joint probabilities of at most m events, where m ! n. RRR 6-2001 Page 1 1 Problem Formulation and Preliminary Lemmas Let A 1 ; :::; A n be arbitrary events in an arbitrary probability space. Introduce the indicator var...

Lower and upper bounds are presented for the probability that at least r or exactly r out of n events occur, in terms of sums of joint probabilities of at most m events, where m ! n. RRR 6-2001 Page 1 1 Problem Formulation and Preliminary Lemmas Let A 1 ; :::; A n be arbitrary events in an arbitrary probability space. Introduce the indicator variables: X i = ( 1; if A i occurs 0; otherwise ; i = 1; :::; n and let = X 1 + \Delta \Delta \Delta +X n : Clearly, designates the number of events which occur. In this paper we present new lower and upper bounds for P ( r), and P ( = r), where 1 r n. The bounds for P ( r) generalize bounds presented in Pr'ekopa, Vizv'ari, Regos and Gao [7], who dealt with the case of r = 1. Our new bounds are different from those presented in Boros and Pr'ekopa [1], for P ( r) and P ( = r) and also from those in Sathe, Pradha and Shah [8], for P ( r). The new bounds are based on joint probabilities of at least r and at most m+r events which are taken into account in more detailed forms, than in the above cited papers. In Section 6 we present numerical examples and in almost all of them our bounds outperform the just mentioned other ones. In what follows, the sets A i 1 " ::: " A i k " A i k+1 " ::: " A i n ; (1) which subdivide the sample space into 2 n disjoint parts, will be referred to as atoms. Our bounds are based on simple lemmas and linear programming formulations, where the optimum values provide us with the bounds. The first lemma enunciates a well-known fact. For a proof the reader is referred to Pr'ekopa [5] (pp.182-183). Lemma 1.1 We have the equality / k ! = X 1i 1 !\Delta\Delta\Delta!i k n X i 1 \Delta \Delta \Delta X i k : (2) Lemma 1.2 Let 1 j 1 ! \Delta \Delta \Delta ! j r n. We have the equalit. Minimize

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The Pennsylvania State University CiteSeerX Archives

Year of Publication:

2009-04-16

Source:

http://rutcor.rutgers.edu/pub/rrr/reports2001/06.ps

http://rutcor.rutgers.edu/pub/rrr/reports2001/06.ps Minimize

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text

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en

DDC:

005 Computer programming, programs & data *(computed)*

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