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Relating thermal conductivity of soil skeleton with soil texture by the concept of“local thermal conductivity fluctuation”

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Journal of Rock Mechanics and Geotechnical Engineering 2022年第1期14卷 262-271页

作者： adrian Rózanski Faculty of Civil Engineering Wroclaw University of Science and TechnologyWybrzeze Wyspia_nskiego 2750-370WrocławPoland

The thermal conductivity of the soil skeletonλ;is an essential parameter from the point of view of the correct assessment of soil overall/effective *** work introduces the concept of“local thermal conductivity fluctuation”which characterizes the microscale variation of conductivity within the solid *** is proposed to link the“local fluctuation”of thermal conductivityλwith the soil texture-the information that is available at the scale of engineering *** was possible to relate the skeleton thermal conductivity with the grain size distribution of the ***,based on a large series of numerical simulations,the paper provides four triangle diagrams(at different organic matter contents:0%,2%,4%and 6%)relating the value ofλ;with volume fraction of individual soil *** result is extremely important from the practical point of *** can quickly evaluateλ;value provided that information on the grain size distribution and organic matter content is available.

关键词： Soil skeleton probability density function(pDF) Computational micromechanics Local fluctuation Soil texture

Testing discrete symmetries at a super τ-charm factory

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Frontiers of physics 2016年第1期11卷 17-25页

作者： adrian John Bevan particle physics Research Centre Queen Mary University of London Mile End Road London E1 4NS UK

Tests of discrete symmetry violation have played an important role in understanding the structure of weak interactions in the Standard Model of particle physics. Historically, these measurements have been extensively performed in experiments with large samples of K and B mesons. A high luminosity τ-charm facility presents physicists with the opportunity to comprehensively explore discrete symmetry violation and test the Standard Model using τ leptons, charm mesons, and charmed baryons. This paper discusses several possible measurements for a future T-charm factory.

关键词： discrete symmetries p C T Cp CpT violation

A New Batch Verifying Scheme for Identifying Illegal Signatures

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Journal of Computer Science & Technology 2013年第1期28卷 144-151页

作者： adrian Atanasiu Faculty of Mathematics and Computer Science Bucharest University

The concept of batch verifying multiple digital signatures is to find a method by which multiple digital signatures can be verified simultaneously in a lower time complexity than separately verifying all the signatures. In this article, we analyze the complexity of the batch verifying schemes defined by Li, Hwang and Chen in 2010, and propose a new batch verifying multiple digital signature scheme, in two variants： one for RSA - by completing the Harn＇s schema with an identifying illegal signatures algorithm, and the other adapted for a modified Elliptic Curve Digital Siggnature Algorithm protocol.

关键词： digital signature batch verifying multiple signature RSA signature elliptic curve digital signature algorithm standard

Automated recognition and mapping of building management system (BMS) data points for building energy modeling (BEM)

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Building Simulation 2021年第1期14卷 43-52页

作者： Sicheng Zhan adrian Chong Bertrand Lasternas Department of Building School of Design and EnvironmentNational University of Singapore4 Architecture DriveSingapore117566Singapore

With the advance of the internet of things and building management system(BMS)in modern buildings,there is an opportunity of using the data to extend the use of building energy modeling(BEM)beyond the design *** applications include retrofit analysis,measurement and verification,and operations and ***,while BMS is collecting a vast amount of operation data,different suppliers and sensor installers typically apply their own customized or even random non-uniform rules to define the metadata,i.e.,the point *** results in a need to interpret and manually map any BMS data before using it for energy *** mapping process is labor-intensive,error-prone,and requires comprehensive prior ***,BMS metadata typically has considerable variety and limited context information,limiting the applicability of existing interpreting *** this paper,we proposed a text mining framework to facilitate interpreting and mapping BMS points to Energyplus *** framework is based on unsupervised density-based clustering(DBSCAN)and a novel fuzzy string matching algorithm“X-gram”.Therefore,it is generalizable among different buildings and naming *** compare the proposed framework against commonly used baselines that include morphological analysis and widely used text mining *** two building cases from Singapore and two from the United States,we demonstrated that the framework outperformed baseline methods by 25.5%,with the measurement extraction F-measure of 87.2%and an average mapping accuracy of 91.4%.

关键词： building management system(BMS) building energy modeling(BEM) auto-mapping DBSCAN metadata interpretation

Novel transparent MgGa_(2)O_(4) and Ni^(2+)-doped MgGa_(2)O_(4) ceramics

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Journal of Advanced Ceramics 2022年第3期11卷 470-481页

作者： Guangran ZHANG adrian GOLDSTEIN Yiquan WU Kazuo Inamori School of Engineering New York State College of CeramicsAlfred UniversityAlfredNew York 14802USA Israel Ceramic and Silicate Institute HaifaIsrael

In this study we fabricated, for the first time, magnesium gallate (MgGa_(2)O_(4), a partially inverted spinel) transparent ceramics, both undoped and doped with 1 at% Ni. The specimens were derived from in-house prepared powder, with a crystallite size of ∼10 nm (by wet chemistry) and densified by pulsed electric current sintering (pECS;peak temperature 950 ℃ for 90 min). Densification levels of 99.84% and 99.52% of theoretical density were attained for doped and undoped materials, respectively. Doping with Ni was seen to marginally improve the densification level. Quite transparent specimens were produced: the best showing transmission of ∼89% of the theoretical level (thickness t = 0.85 mm). The absorption spectra revealed that the dopant was accumulated as Ni^(2+) in the octahedral sites of the lattice, as occurs in single-crystal specimens. After excitation at 980 nm, the doped disks exhibited a wide fluorescence band centered at 1264 nm.

关键词： magnesium gallate(MgGa_(2)O_(4)) spinel transparent ceramics pulsed electric current sintering(pECS)

Design considerations and behavior of reinforced concrete core dams during construction and impounding

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Water Science and Engineering 2016年第3期9卷 212-218页

作者： peter Tschernutter adrian Kainrath Institute of Hydraulic Engineering and Water Resources Management Vienna University of Technology

Reinforced concrete core dams can be an alternative solution to conventional dam designs either for permanent impounded reservoirs or flood protection and flood-retaining dams. Dams of this type have been constructed in Austria for various reasons and have shown good behavior during operation. For a better understanding of the load-deformation behavior of this type of dams during construction and impounding, numerical simulations were carried out. The interaction between the thin reinforced concrete core and the dam fill material as well as the influence of fill material properties and other main parameters, such as the roughness of the concrete surface and bedding conditions of the concrete core,on the deformation behavior of dams were examined. The results show that high compressive stress is mainly induced by arching effects in the dam body during construction. During the reservoir impounding, the compressive stresses in the core are reduced significantly while the bending moment in the core footing increases. The results also show that the maximum bending moments occur at the core footing and can be significantly reduced by design improvements. The findings in this study can provide general design recommendations for small dams with a central concrete core as a sealing blanket.

关键词： Embankment dam Concrete diaphragm sealing Numerical analysis Concrete core Structural force

A soil quality index for evaluation of degradation under land use and soil erosion categories in a small mountainous catchment, Iran

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Journal of Mountain Science 2019年第11期16卷 2577-2590页

作者： Kazem NOSRATI adrian LCOLLINS Department of physical Geography School of Earth SciencesShahid Beheshti University*** TehranIran Sustainable Agriculture Sciences Department Rothamsted ResearchNorth WykeOkehamptonEX202SBUK

Soil erosion and land use type have long been viewed as being particularly important drivers of soil *** objectives of this study,therefore,were to select a new soil quality index(SQI)which varies significantly with land use/soil erosion,and to evaluate the new SQI using expert *** total,18 soil physical,chemical,and biochemical properties(indicators)were measured on 56 soil samples collected from four land use/soil erosion categories(rangeland/surface erosion,rangeland/subsurface erosion,cultivated land/surface erosion and dry-farming land/surface erosion).principal component and classification analysis(pCCA)identified five pCs that explained 77.7%of the variation in soil properties with the biochemical pC varying significantly with land use/soil *** discriminant analysis(GDA)selected urease and clay as the most sensitive properties distinguishing the land use/soil erosion *** GDA canonical scores for the new SQI were significantly correlated with expert opinion soil surface summed scores(for soil movement,surface litter,pedestalling,rills and flow pattern)derived using the *** of the Interior Bureau of Land Management(BLM)method.A forward stepwise general regression model revealed that the new SQI values were explained by soil movement,surface litter,and the summed values of the soil surface ***,this study confirmed that soil quality in the study area in Iran is controlled by land use and corresponding soil erosion.

关键词： Soil quality index Land use Erosion status Soil enzyme activities Multivariate statistical techniques

The Topological Degree in Ordered Banach Spaces

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Acta Mathematica Sinica,English Series 2008年第10期24卷 1583-1592页

作者： adrian DUMA Ileana DUMA Department of Mathematics University of CraiovaA.I.Cuza Street 13 Craiova 200585 Dolj Romania Department of Financial Management and Accounting Spiru Haret University Brazda lui Novac Street 4 Craiova 200690 DoljRomania

This paper is devoted to the applications of classical topological degrees to nonlinear problems involving various classes of operators acting between ordered Banach spaces. In this framework, the Leray-Schauder, Browder-petryshyn, and Amann-Weiss degree theories are considered, and several existence results are obtained. The non-Archimedean case is also discussed.

关键词： degree theory ordered Banach spaces A-proper mappings fixed-point theorems

Function of lateral line canal morphology

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Integrative Zoology 2015年第1期10卷 111-121页

作者： adrian KLEIN Horst BLECKMANN Institute for Zoology University of BonnPoppelsdorfer SchlossBonnGermany

Fish perceive water motions and pressure gradients with their lateral *** line information is used for prey detection,spatial orientation,predator avoidance,schooling behavior,intraspecific communication and station *** lateral line of most fishes consists of superficial neuromasts(SNs)and canal neuromasts(CNs).The distribution of SNs and CNs shows a high degree of variation among *** have speculated for decades about the functional significance of this diversity,often without any conclusive *** et al.(2013)examined how tubules,pore number and pore patterns affect the filter properties of lateral line canals in a marine teleost,the black prickleback(Xiphister atropurpureus).A preliminary mathematical model was formulated and biomimetic sensors were *** the present study the mathematical model was extended to understand the major underlying principle of how canal dimensions influence the filter properties of the lateral *** the extended mathematical model and the sensor experiments show that the number and distribution of pores determine the spatial filter properties of the lateral *** an environment with little hydrodynamic noise,simple and complex lateral line canals have comparable response ***,if exposed to highly turbulent conditions,canals with numerous widely spaced pores increase the signal to noise ratio significantly.

关键词： filter lateral line morphology noise sensor