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Clustering and classification of energy meter data: A comparison analysis of data from individual homes and the aggregated data from multiple homes

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Building Simulation 2021年第1期14卷 103-117页

作者： Juan Sala Rongling Li Morten H.christensen Department of Civil Engineering Technical University of DenmarkLyngbyDenmark Department of Electrical Engineering Technical University of DenmarkLyngbyDenmark

The transition towards a more sustainable environment requires the development of new control systems on the demand side to integrate renewable energy sources into the energy *** this purpose,energy meter data of homes have been broadly used in modelling,forecast and optimal control of energy ***,usability and reliability of household energy meter data have not been specifically *** this study,we apply commonly used machine learning methods on the heating consumption data of(1)two individual homes in an apartment building and(2)the district heating substation of the apartment building which includes 72 homes,to identify how the characteristics of data affect the result of data *** clustering approaches were applied using the K-means algorithm to group similar heating daily *** the clustering results,different classification algorithms such as logistic regression and random forest were applied to predict the heating consumption level with regards to the weather *** data analysis process showed that the substation data which is the aggregated heating consumption of the 72 homes is more reliable and valid for energy prediction than the data from two individual *** is due to the large variation and uncertainty in the daily energy use of individual homes.

关键词： smart meter data daily profile clustering classification data usability heat substation

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皇家赌场

游艇业 2009年第3期 70-79页

作者：陈建钊 christensen Yachts（图）《游艇业》编辑部

正如其主人所言，精致的缟玛瑙赌桌、扑克牌桌面，邦女郎剪影在玻璃墙上栩栩如生……《皇家赌场》中的电影元素几乎布满这艘游艇的每个角落。

关键词：赌场扑克牌玻璃墙

Gorenstein dimensions of unbounded complexes and change of base (with an appendix by Driss Bennis)

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Science China Mathematics 2017年第3期60卷 401-420页

作者： christensen Lars Winthe KOKSAL Fatih LIANG Li Department of Mathematics and Statistics Texas Tech University Lubbock TX 79409 USA Department of Computer and Mathematical Sciences Lewis University Romeoville IL 60446 USA School of Mathematics and Physics Lanzhou Jiaotong University Lanzhou 730070 China

For a commutative ring R and a faithfully fiat R-algebra S we prove, under mild extra assumptions, that an R-module M is Gorenstein flat if and only if the left S-module S R M is Gorenstein flat, and that an R-module N is Gorenstein injective if and only if it is cotorsion and the left S-module Homn（S, N） is Gorenstein injective. We apply these results to the study of Gorenstein homological dimensions of unbounded complexes. In particular, we prove two theorems on stability of these dimensions under faithfully flat （co-）base change.

关键词： Gorenstein injective dimension faithfully flat co-base change Corenstein flat dimension faithfullyflat base change

Viral evasion of DNA-stimulated innate immune responses

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Cellular & Molecular Immunology 2017年第1期14卷 4-13页

作者： Maria H christensen Sфren R Paludan Department of Biomedicine Aarhus University Aarhus DK-8000 Denmark Aarhus Research Center for Innate Immunology Aarhus University Aarhus DK-8000 Denmark

Cellular sensing of virus-derived nucleic acids is essential for early defenses against virus infections. In recent years, the discovery of DNA sensing proteins, including cyclic GMP-AMP synthase （cGAS） and gamma-interferon- inducible protein （IFI16）, has led to understanding of how cells evoke strong innate immune responses against incoming pathogens carrying DNA genomes. The signaling stimulated by DNA sensors depends on the adaptor protein STING （stimulator of interferon genes）, to enable expression of antiviral proteins, including type I interferon. To facilitate efficient infections, viruses have evolved a wide range of evasion strategies, targeting host DNA sensors, adaptor proteins and transcription factors. In this review, the current literature on virus-induced activation of the STING pathway is presented and we discuss recently identified viral evasion mechanisms targeting different steps in this antiviral pathway.

关键词： DNA sensing evasion innate immunology STING

Characterizing R-duality in Banach Spaces

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Acta Mathematica Sinica,English Series 2013年第1期29卷 75-84页

作者： Ole christensen Xiang Chun XIAO Yu Can ZHU Department of Mathematics Technical University of Denmark Department of Mathematics Fuzhou University

R-duals of certain sequences in Hilbert spaces were introduced by Casazza, Kutyniok and Lammers in 2004 and later generalized to Banach spaces by Xiao and Zhu. In this paper we provide some characterizations of R-dual... 详细信息

关键词： R-duals p-frames p-Riesz bases duality

ARCHITECTURE AND ITS IMPLEMENTATION FOR ROBOTS TO NAVIGATE IN UNKNOWN INDOOR ENVIRONMENTS

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Chinese Journal of Mechanical Engineering 2005年第3期18卷 366-370页

作者： Li Wenfeng christensen I. Henrik Oreback Anders College of Logistics Engineering Wuhan University of Technology Wuhan 430063 China Centre for Autonomous Systems Royal Institute of Technology SE-100 44 Stockholm Sweden

It is discussed with the design and implementation of an architecture for a mobile robot to navigate in dynamic and anknown indoor environments. The architecture is based on the framework of Open Robot Control Software at KTH （OROCOS@KTH）, which is also discussed and evaluated to navigate indoor efficiently, a new algorithm named door-like-exit detection is proposed which employs 2D feature oft. door and extracts key points of pathway from the raw data of a laser scanner. As a hybrid architecture, it is decomposed into several basic components which can be classified as either deliberative or reactive. Each component can concurrently execute and communicate with another. It is expansible and transferable and its components are reusable.

关键词： Indoor navigation Architecture Framework Component Mobile robots

Melanization in living organisms: a perspective of species evolution

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Protein & Cell 2010年第9期1卷 830-841页

作者： Christopher J Vavricka Bruce M.christensen Jianyong Li CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of Sciences(CASPMI)Beijing 100101China Department of Pathobiology University of Wisconsin-MadisonMadisonWI 53706USA Department of Biochemistry Virginia TechBlacksburgVA 24061USA

Eumelanin is a heteropolymer that is generally composed of hydroxylated indole residues and plays diverse protective functions in various *** is derived from the amino acid tyrosine and production of melanin is a highly complex oxidative process with a number of steps that can either proceed enzymatically or *** melanin plays important protective roles in many species,during melanization,particularly in steps that can proceed non-enzymatically,many toxic intermediates are produced,including semiquinones,dopaquinone,indole-quinones and moreover,the production of many reactive oxygen *** mitigate the production of reactive species,a number of proteins that regulate the biochemical process of melanization have evolved in various living species,which is closely related to adaptation and physiological *** this communication,we discuss differences between non-enzymatic and enzymatic processes of melanization and the enzymatic regulation of melanization in difference species with an emphasis on differences between mammals and *** between melanization and insect sclerotization is also emphasized which raises some interesting questions about the current models of these pathways.

关键词： melanization melanogenesis sclerotization tanning dopa tyrosinase dopachrome tautomerase

Driving pattern analysis of Nordic region based on National Travel Surveys for electric vehicle integration

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Journal of Modern Power Systems and Clean Energy 2015年第2期3卷 180-189页

作者： Zhaoxi LIU Qiuwei WU Linda christensen Antti RAUTIAINEN Yusheng XUE Centre for Electric Power and Energy(CEE) Department of Electrical EngineeringTechnical University of DenmarkElektrovej 325Kgs.Lyngby 2800Denmark Department of Transport Technical University of DenmarkKgs.Lyngby 2800Denmark Department of Electrical Engineering Tampere University of TechnologyTampere 33101Finland State Grid Electric Power Research Institute Nanjing 210003China

Electic vehicles(EVs)show great potential to cope with the intermittency of renewable energy sources(RES)and provide demand side flexibility required by the smart ***,EVs will increase the electricity *** scale integration of EVs will probably have substantial impacts on power *** paper presents a methodology to transform driving behavior of person into one of the cars in order to analyze the driving pattern of EVs based on the National Travel *** the proposed methodology,a statistical process is used to obtain the driving behavior of cars by grouping the survey respondents according to the driving license number and car number,and mapping the households with similar *** proposed methodology was used to carry out the driving pattern analysis in the Nordic *** detailed driving requirements and charging/discharging availability of vehicles along the day were *** types of EV availabilities were studied in this paper considering different charging/discharging conditions of EVs for the power system integration,*** availability all day and EV availability at *** results show that the daily driving requirements of the Nordic region are not very *** driving patterns of vehicles in the Nordic region vary on weekdays and *** two types of EV availabilities are quite different from each other.

关键词： Driving pattern Electric vehicles(EVs) EV availability Nordic Power system integration

Partnership in Container Terminal Development and Management

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上海海事大学学报 2004年第2期25卷 103-104页

作者： Eric Bogh christensen Managing Director Modern Terminals Limited

China’s mainland2003=48 mill TEU16% of Worlds container ports throughput10 top Mainland ports growing + 25% per annumNot question of "if" but "when" 100 mill TEUShanghai, China’s mainland’s #1 container portHong Ko... 详细信息

关键词： World PRD Partnership in Container Terminal Development and Management