检索结果-内蒙古大学图书馆

Machine learning approaches for estimating building energy consumption

IOP Conference Series: Earth and Environmental science 2020年第5期474卷

作者： Liangyu Liu Ningyi Liu Yilin Zhang Yumeng Li Xiaobo Rui Zi Yang Department of electrical and computer engineering The Ohio State University Columbus OH 43210 USA Department of statistics The Ohio State University Columbus OH 43210 USA Department of integrated systems engineering The Ohio State University Columbus OH 43210 USA State Key Laboratory of Precision Measuring Technology and Instruments Tianjin University Tianjin 300072 China Department of materials science and engineering The Ohio State University Columbus OH 43210 USA

Using building data and corresponding weather conditions provided by ASHRAE, a statistical method that carefully measures features and applies both linear regression and gradient boosting machine models to predict and analyse building energy consumption was developed. Comparison of the predicted and actual energy usage indicates our model can predict energy consumption within an acceptable error range. Such statistical model has the potential to be widely used to monitor energy consumption and measure energy savings for various kinds of buildings in the future. If additional data is available, this method will be more widely applicable to other sectors such as industrial facilities.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Coupling of photonic Fano resonances with MoS2 excitons for enhanced light emission and optical modulation

Coupling of photonic Fano resonances with MoS2 excitons for ...

引用

CLEO: science and Innovations, CLEO_SI 2018

作者： Zhang, Xingwang Biekert, Nicolas Choi, Shinhyuk Naylor, Carl H. De-Eknamkul, Chawina Huang, Wenzhuo Zheng, Xiaorui Wang, Dake Charlie Johnson, A.T. Cubukcu, Ertugrul Department of Nanoengineering University of California San Diego La JollaCA92093 United States Department of Electrical and Computer Engineering University of California San Diego La JollaCA92093 United States Department of Physics and Astronomy University of Pennsylvania PhiladelphiaPA19104 United States Department of Materials Science and Engineering University of Pennsylvania PhiladelphiaPA19104 United States Physics Department Furman University GreenvilleSC29613 United States

We demonstrate unidirectional enhanced photoluminescence from a monolayer MoS2 via Fano resonances in dielectric photonic crystals. The Fano resonances can also be dynamic controlled by optical and electrical tuning o... 详细信息

ISBN: (纸本)9781943580422

关键词： Resonance

来源：评论

学校读者我要写书评

暂无评论

Phase Coexistence of Ferroelectric Vortices and Classical a1/a2 Domains in PbTiO3/SrTiO3 Superlattices.

引用

Microscopy and Microanalysis 2018年第S1期24卷 1638-1639页

作者： Christopher T. Nelson Zijian Hong Ajay K. Yadav Anoop R. Damodaran Shang-Lin Hsu James D. Clarkson Long-Qing Chen Lane W. Martin Ramamoorthy Ramesh Materials Science & Technology Division Oak Ridge National Laboratory Oak Ridge TN USA Department of Physics University of California Berkeley CA USA Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA USA Department of Materials Science and Engineering Pennsylvania State University State College PA USA Department of Materials Science and Engineering University of California Berkeley CA USA School of Electrical Engineering and Computer Science UC Berkeley Berkeley California USA.

来源：评论

学校读者我要写书评

暂无评论

Application of Surface Plasmon Resonance Sensor with Polypyrrole Chitosan Graphene Oxide layer to Detect the Napropamide 5

Application of Surface Plasmon Resonance Sensor with Polypyr...

引用

5th International Conference on Fundamental and Applied sciences, ICFAS 2018

作者： Sadrolhosseini, Amir Reza Rashid, Suraya Abdul Soleimani, Hassan Shafie, Suhaidi Noor, A.S.M. Mohammadi, Ahmad Institute of Advanced Technology Universiti Putra Malaysia Serdang Selangor43400UPM Malaysia Materials Processing and Technology Laboratory Nanomaterials and Nanotechnology Group Institute of Advanced Technology Universiti Putra Malaysia Serdang Selangor43400UPM Malaysia Department of Fundamental and Applied Science Universiti Teknologi PETRONAS Seri Iskandar3175 Malaysia Department of Electrical and Electronic Engineering Faculty of Engineering Universiti Putra Malaysia Serdang Selangor43400 UPM Malaysia Faculty of Engineering Universiti Putra Malaysia Serdang Selangor43400UPM Malaysia Department of Electrical and Computer Engineering Buein Zahra Technical University Buein Zahra Qazvin Iran

A polypyrrole Chitosan Graphene Oxide (PPy-Chi/GO) composite layer was prepared using the electro-chemical method. The PPy-Chi/GO layer was used to measure the low concentration of napropamide. In this study, the PPy-Chi/GO composite layer was deposited on the gold layer side of a microscope's glass slide in different thicknesses. The morphology, thickness, roughness, and refractive index of the layer were obtained using field effect scanning electron microscopy, profilemeter, atomic force microscopy, and the surface plasmon resonance technique. The structure of the composite layer was investigated using X-Ray diffraction. The peak that were observed from X-ray diffraction was at 9.9°, corresponding to GO, and the broad peak between 25° and 27° was related to polypyrrole and chitosan. The PPy-Chi/GO layer was used to measure the concentration of napropamide dissolved in hexane in the range of 0.01 to 100 ppm using the surface plasmon resonance technique;the limitation of sensor was 0.1 ppm. © Published under licence by IOP Publishing Ltd.

关键词： Polypyrroles

来源：评论

学校读者我要写书评

暂无评论

A compact structure for realizing Lorentzian, Fano and EIT resonance lineshapes in a microring resonator

arXiv

引用

arXiv 2019年

作者： Gu, Linpeng Fang, Hanlin Li, Juntao Fang, Liang Chua, Soo Jin Zhao, Jianlin Gan, Xuetao MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions Shaanxi Key Laboratory of Optical Information Technology School of Science Northwestern Polytechnical University Xi'an710072 China State Key Laboratory of Optoelectronic Materials and Technologies School of Physics Sun Yat-Sen University Guangzhou510275 China Department of Electrical and Computer Engineering National University of Singapore 4 Engineering Drive 3 Singapore117583 Singapore

Microring resonators, as a fundamental building block of photonic integrated circuits, have been well developed into numerous functional devices, whose performances are strongly determined by microring's resonance lineshapes. We propose a compact structure to reliably realize Lorentzian, Fano, and electromagnetically induced transparency (EIT) resonance lineshapes in a microring. By simply inserting two air-holes in the side-coupled waveguide of a microring, a Fabry-Perot (FP) resonance is involved to couple with microring's resonant modes, showing Lorentzian, Fano, and EIT lineshapes over one free spectral range of the FP resonance. The quality factors, extinction ratios, and slope rates in different lineshapes are discussed. At microring's specific resonant wavelength, the lineshape could be tuned among these three types by controlling the FP cavity's length. Experiment results verify the theoretical analysis well and represent Fano lineshapes with extinction ratios of about 20 dB and slope rates over 280 dB/nm. The reliably and flexibly tunable lineshapes in the compact structure have potentials to improve microring-based devices and expand their application scopes. Copyright © 2019, The Authors. All rights reserved.

关键词： Light extinction

来源：评论

学校读者我要写书评

暂无评论

Entangled radiofrequency-photonic sensor network

arXiv

引用

arXiv 2019年

作者： Xia, Yi Li, Wei Clark, William Hart, Darlene Zhuang, Quntao Zhang, Zheshen James C. Wyant College of Optical Sciences University of Arizona TucsonAZ85721 United States Department of Electronic and Information Engineering Shanxi University Taiyuan030013 China Department of Materials Science and Engineering University of Arizona TucsonAZ85721 United States General Dynamics Mission Systems 8220 East Roosevelt Street ScottsdaleAZ85257 United States General Dynamics Mission Systems 9 Vreeland Road Florham ParkNJ07932 United States Department of Electrical and Computer Engineering University of Arizona TucsonAZ85721 United States

Quantum metrology [1–4] enables a measurement sensitivity below the standard quantum limit (SQL), as demonstrated in the Laser Interferometer Gravitational-wave Observatory (LIGO) [5, 6]. As a unique quantum resource, entanglement has been utilized to enhance the performance of, e.g., microscopy [7], target detection [8], and phase estimation [9]. To date, almost all existing entanglement-enhanced sensing demonstrations are restricted to improving the performance of probing optical parameters at a single sensor, but a multitude of applications rely on an array of sensors that work collectively to undertake sensing tasks in the radiofrequency (RF) and microwave spectral ranges. Here, we propose and experimentally demonstrate a reconfigurable RF-photonic sensor network comprised of three entangled sensor nodes. We show that the entanglement shared by the sensors can be tailored to substantially increase the precision of parameter estimation in networked sensing tasks, such as estimating the angle of arrival (AoA) of an RF field. Our work would open a new avenue toward utilizing quantum metrology for ultrasensitive positioning, navigation, and timing. Copyright © 2019, The Authors. All rights reserved.

关键词： Sensor nodes

来源：评论

学校读者我要写书评

暂无评论

Giant Valley-Zeeman splitting from spin-singlet and spin-triplet interlayer excitons in WSe2/MoSe2Heterostructure

arXiv

引用

arXiv 2019年

作者： Wang, Tianmeng Miao, Shengnan Li, Zhipeng Meng, Yuze Lu, Zhengguang Lian, Zhen Blei, Mark Taniguchi, Takashi Watanabe, Kenji Tongay, Sefaattin Smirnov, Dmitry Shi, Su-Fei Department of Chemical and Biological Engineering Rensselaer Polytechnic Institute TroyNY12180 United States National High Magnetic Field Lab TallahasseeFL32310 United States Department of Physics Florida State University TallahasseeFL32306 United States School for Engineering of Matter Transport and Energy Arizona State University TempeAZ85287 United States National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan Department of Electrical Computer and Systems Engineering Rensselaer Polytechnic Institute TroyNY12180 United States

Transition metal dichalcogenides (TMDCs) heterostructure with a type II alignment hosts unique interlayer excitons with the possibility of spin-triplet and spin-singlet states. However, the associated spectroscopy signatures remain elusive, strongly hindering the understanding of the Moiré potential modulation of the interlayer exciton. In this work, we unambiguously identify the spin-singlet and spin-triplet interlayer excitons in the WSe2/MoSe2hetero-bilayer with a 60-degree twist angle through the gate- A nd magnetic field-dependent photoluminescence spectroscopy. Both the singlet and triplet interlayer excitons show giant valley-Zeeman splitting between the K and K' valleys, a result of the large Landé g-factor of the singlet interlayer exciton and triplet interlayer exciton, which are experimentally determined to be ∼ 10.7 and ∼ 15.2, respectively, in good agreement with theoretical expectation. The PL from the singlet and triplet interlayer excitons show opposite helicities, determined by the atomic registry. Helicity-resolved photoluminescence excitation (PLE) spectroscopy study shows that both singlet and triplet interlayer excitons are highly valley-polarized at the resonant excitation, with the valley polarization of the singlet interlayer exciton approaches unity at ∼ 20 K. The highly valley-polarized singlet and triplet interlayer excitons with giant valley-Zeeman splitting inspire future applications in spintronics and valleytronics. Copyright © 2019, The Authors. All rights reserved.

关键词： Polarization

来源：评论

学校读者我要写书评

暂无评论

Uniformity of Multilayer Hexagonal Boron Nitride Dielectric Stacks Grown by Chemical Vapor Deposition on Platinum and Copper Substrates

Uniformity of Multilayer Hexagonal Boron Nitride Dielectric ...

引用

International Symposium on Physical & Failure Analysis of Integrated Circuits

作者： Fei Hui Xianhu Liang Wenjing Fang Wei Sun Leong Haozhe Wang Hui Ying Yang Yuanyuan Shi Marco A. Villena Jing Kong Mario Lanza Institute of Functional Nano & Soft Materials Soochow University Suzhou China Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge USA Pillar of Engineering Product Development Singapore University of Technology and Design Singapore Department of Materials Science and Engineering Stanford University Stanford California USA

ISBN: (纸本)9781538649305

Large-area multilayer hexagonal boron nitride (h-BN) dielectric stacks can be grown on different metallic substrates by chemical vapor deposition (CVD). The high temperatures used during the growth produce the polycrystallization of the metallic substrates (leading to different crystallographic orientations at the surface of each grain), which may influence the catalytic activity of the CVD process on different grains, as well as the properties of the h-BN stacks grown on them. In this work we compare the uniformity of multilayer h-BN dielectric stacks grown via CVD on two different metallic substrates: Pt and Cu. Our study reveals that using Pt substrates leads to h-BN thickness fluctuations from one Pt grain to another, while this effect remarkably reduced when the h-BN is grown on Cu substrates. Therefore, the use of Cu substrates seems to be more convenient for h-BN production and integration at the wafer level.

关键词： Substrates Boron Dielectrics Nonhomogeneous media Fluctuations Conductivity Chemical vapor deposition

来源：评论

学校读者我要写书评

暂无评论

electrical Stimulation in Combating Pressure Ulcer for Immobilize Subjects: A Conceptual Framework

引用

Journal of Physics: Conference Series 2019年第1期1372卷

作者： Amelia Wong Azman Fawwaz Eniola Fajingbesi Zuraida Ahmad Yasir Mohd Mustafah Rashidah Funke Olanrewaju Nur Azah Hamzaid Department of Electrical and Computer Engineering Department of Physics Electronics and Earth Science Fountain University Osogbo Nigeria Department of Manufacturing and Materials Engineering Department of Mechatronics Engineering International Islamic University Malaysia Department of Biomedical Engineering Faculty of Engineering University Malaya

A paradigm shift in health system did intensify the need for research on wearable electronics. There are numerous reasons that could lead to skin ulcers. The most common are lesion due to constant pressure, incontinence control, excessive humidity and postural changes. Over the years, there have been numerous interventions ranging from specific skin treatment, introducing prevention programs as well as to mechanical intervention. On the rise in such clinical rehabilitation program is the use of electrical stimulation (ES) at a therapeutic level, wound care and muscle function restoration. This paper presents a concept development and implementation process of a new pressure ulcer intervention system which can be used for both chairbound and bedridden patients. The concept here is to integrate the use of electrical stimulation, interface pressure mapping and redistribution with antimicrobial protection not only to act as therapeutic but at the same time as a means of prevention of pressure ulcers by improving muscle tone and decreasing atrophy among immobilized subjects.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Empty substrate integrated waveguide-fed MMW aperture-coupled patch antenna for 5G applications 12

Empty substrate integrated waveguide-fed MMW aperture-couple...

引用

12th European Conference on Antennas and Propagation, EuCAP 2018

作者： Khan, Zia Ullah Jilani, Syeda Fizzah Belenguer, Angel Loh, Tian Hong Alomainy, Akram School of Electronic Engineering and Computer Science Queen Mary University of London LondonE1 4NS United Kingdom Departamento de Ingeniería Eléctrica Electrónica Automática y Comunicaciones Universidad de Castilla-La Mancha Spain Engineering Materials and Electrical Science Department National Physical Laboratory TeddingtonTW11 0LW United Kingdom

ISBN: (纸本)9781785617911

This paper introduces a microstrip square patch antenna with a novel low-cost and efficient feeding mechanism for millimetre-wave frequencies targeting at 28 GHz. The radiating patch is excited by the technique of empty substrate integrated waveguide, and two different slot configurations have been examined in this regard. It has been observed that the antenna gain profile and radiation efficiency is significantly improved in both configurations as compared to the microstrip square patch antenna provided with conventional feeding. © Institution of engineering and *** Rights Reserved.

关键词： Millimeter waves

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：