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28th International Semiconductor Laser Conference, ISLC 2022

作者： Masuyama, Kei Shirao, Mizuki Nishiyama, Nobuhiko Ohata, Nobuo Information Technology R&d Center Mitsubishi Electric Corporation Kamakura-shi Kanagawa247-8501 Japan Tokyo Institute of Technology Department of Electrical and Electric Engineering Tokyo152-8552 Japan

We have evaluated the stability of a multi-wavelength laser. The use of Qd-SOA and ring-based external cavity enabled 8-wavelength simultaneous drifting with stable wavelength spacing at 378.1 GHz, which is suitable f... 详细信息

ISBN: (数字)9784885523359

ISBN: (纸本)9784885523359

关键词： Semiconductor quantum dots

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Experimental Verification of Circuit-Losses Analysis-Model of dC-Output Converter developed using Approximated Equations from Measurement data and datasheet data

Experimental Verification of Circuit-Losses Analysis-Model o...

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Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC)

作者： ryota Kondo Tsuyoshi Funaki Advanced Technology R&D Center Mitsubishi Electric Corporation Hyogo Japan Division of Electric Electronics and Information Engineering Osaka Univercity Osaka Japan

ISBN: (数字)9798331516116

ISBN: (纸本)9798331516123

This paper proposes a losses-analysis model of a dC-output converter based on the approximated equations from measurements and a datasheet. Target verification circuit consists of a dC-voltage source, a smooth capacitor, two half bridge legs, and a load inductor connected to the midpoints of the half bridge legs, which controls the continuous average dC current of the load inductor. The use of self-measured data, compared with the use of datasheet values, enables expanding the ranges of the considerable target parameters. Hence, lesser order approximated equations can deal with more target parameters with less calculation period than that in a conventional time domain simulation. In this study, calculation flow of losses from power devices losses and inductor losses to circuit losses was developed. Subsequently, a power losses model and inductor losses model were developed via the linear least square method. Finally, a 400 V experimental system was developed to verify the accuracy of the circuit losses at 16 specified operating conditions by varying three verification parameters, switching frequency, gate resistance, and inductance. The result shows that the losses calculated using the proposed model has good accuracy with an error of 1.9 % to 10.6 % to the measured result.

关键词： Legged locomotion Analytical models Accuracy Measurement uncertainty Loss measurement Mathematical models data models Electrical resistance measurement Integrated circuit modeling Inductors

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Low-Carbon dispatch of distribution Networks Considering demand response and Photovoltaic Integration

Low-Carbon Dispatch of Distribution Networks Considering Dem...

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IEEE Conference on Energy Internet and Energy System Integration (EI2)

作者： Xiaolong Jiang Zifa Liu Biao Cong Mengni Ye Xiaonan Zhu School of Electrical and Electronic Engineering North China Electric Power University Beijing China R&D Center Intelligent Power Distribution Technology R&D Department NARI Group Co. Ltd Nanjing China

ISBN: (数字)9798331523527

ISBN: (纸本)9798331523534

In the context of low-carbon electricity, the low-carbon operation of the distribution network significantly impacts the reduction of carbon emissions in the power system. Addressing how to achieve coordinated low-carbon economic operation at the distribution network level is an urgent issue that requires resolution. This paper proposes a low-carbon scheduling model that considers carbon emissions and demand response within the distribution network. First, we introduce an improved dynamic carbon emission factor for the distribution network, which serves as a guiding signal to provide reference for users' low-carbon electricity consumption. Next, we develop two distinct demand response models: one for industrial users aimed at minimizing scheduling costs while reducing carbon emissions, and another for residential users focused on electricity satisfaction and low-carbon satisfaction. Finally, simulations are conducted using an improved IEEE-33 node distribution system. The results indicate that the proposed scheduling model effectively reduces carbon emissions in the distribution network and enhances the integration of photovoltaic resources.

关键词： Photovoltaic systems Job shop scheduling Costs Electricity Power system dynamics distribution networks Carbon dioxide dynamic scheduling demand response Load modeling

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Fast Trajectory Planning for AGV in the Presence of Moving Obstacles:A Combination of 3-dim A* Search and QCQP 33

Fast Trajectory Planning for AGV in the Presence of Moving O...

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第33届中国控制与决策会议

作者： Bai Li Youmin Zhang Yakun Ouyang Yi Liu Xiang Zhong Hangjie Cen Qi Kong College of Mechanical and Vehicle Engineering Hunan University Department of Mechanical Industrial and Aerospace EngineeringConcordia University Autonomous Driving R&D Center Xiaopeng Automobile Technology Co.Ltd JDX R&D Center *** American Technologies Corporation

ISBN: (纸本)9781665431293

This paper concerns about the automatic guided vehicle（AGV） trajectory planning *** it should be formulated as an optimal control problem（OCP） and solved via numerical *** concrete procedures to solve an OCP numerically include discretizing it into a mathematical programming（MP） problem and solving the MP via an appropriate ***,most of the predominant MP solvers only derive local optima because global optimization takes too *** the predominant MP solvers only find local optima,the solution quality relies on the homotopy class of the initial guess,*** starting point of an optimization process.A search in the abstracted x-y-time state space is adopted to find a suitable initial guess,which directly plans a coarse trajectory rather than a *** the initial guess,an MP in the form of a quadratically constrained quadratic program（QCQP） is solved *** results show that the average CPU time spent on the first-A-then-QCQP method is only 1.4035 seconds in *** codes are provided at https://***/libai1943/AGVotionlanningithovingbstacles.

关键词： Collision avoidance Trajectory planning Numerical Optimal control Automatic Guided Vehicle

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A Comprehensive Simulation Study on Cu Trace damage and Cu/Polyimide Interface delamination of rdLs in Fan-Out Wafer Level Package Under Hygro-Thermo-Mechanical Loads

A Comprehensive Simulation Study on Cu Trace Damage and Cu/P...

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Electronics Packaging technology Conference (EPTC)

作者： Ming-Sheng Luo Guang-Chao Lyu Jia-Wei deng Xin-Ping Zhang School of Materials Science and Engineering Guangzhou China Guangdong Provincial Engineering Technology R&D Center of Electronic Packaging Materials and Reliability South China University of Technology Guangzhou China

ISBN: (数字)9798331522001

ISBN: (纸本)9798331522018

The current study investigates the influence of moisture on the delamination of Cu/Polyimide (PI) interfaces and cracking of Cu traces within the redistribution layers (rdLs) of fan-out wafer level packages (FOWLPs) containing two dies during the reflow process, utilizing finite element simulation. The crack initiation and the delamination behavior of Cu/PI interfaces are analyzed using the cohesive zone model (CZM) based on interface fracture mechanics. The influences of the number of rdL layers and thickness of Cu traces on interface damage and trace stress concentration are also studied. The findings indicate that crack formation and delamination of interfaces are most likely to occur at the edge of the interface between the top layer of Cu trace and the polyimide in die-to-die (d2d) region. The presence of hygro-swelling stress exacerbates interfacial damage. Moreover, the degradation of the Cu/PI interface intensifies with an increase in the number of rdL layers. While Cu trace is prone to stress concentration at the junction with the pad, the impact of moisture on Cu trace stress at 260 °C is relatively small.

关键词： Semiconductor device modeling Temperature Moisture Polyimides device-to-device communication Finite element analysis delamination Junctions Stress Load modeling

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Flexible Continuous Phase Shifts Method for Binary defocusing Technique with Short Pitch Fringes 14

Flexible Continuous Phase Shifts Method for Binary Defocusin...

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14th International Conference on Information Optics and Photonics, CIOP 2023

作者： Wang, dezhao Zhou, Weihu Zhang, Zili Meng, Fanchang Wang, Na College of Opto-Electronic Engineering Changchun University of Science and Technology Jilin Changchun130022 China Photoelectric Technology R&D Center Institute of Microelectronics of the Chinese Academy of Sciences Beijing100029 China University of Chinese Academy of Sciences Beijing100029 China School of Instrument Science and Optoelectronic Engineering Hefei University of Technology Anhui Hefei230009 China

ISBN: (纸本)9781510671744

The microscopic fringe projection profilometry system using a digital micromirror device (dMd) can improve the height sensing sensitivity by reducing the fringe pitch. However, due to the discrete nature of the dMd, it is impossible to apply arbitrary and continuous phase shifts when the fringe pitch is reduced to a few pixels. The proposed method uses a plane-parallel plate to produce a displacement on the light passing through it and achieves continuous phase shifts by controlling the oblique angle of the plate. Experimental results demonstrate that the proposed method can introduce continuous phase shifts to quasi-sinusoidal fringes with a minimum pitch of 2 pixels and correctly demodulate the phase map using a 9-step phase-shifting algorithm. Simulation and experiments also show that the inherent phase shift error can be neglected when the relevant parameters of the plate are properly selected. © 2023 SPIE.

关键词： Pixels

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Coupling Prediction Model and Influencing Factors Analysis of Injection and Production Gas Flow rate and Wellhead Pressure for Compressed Air Energy Storage in Salt Cavern

SSRN

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SSrN 2024年

作者： ren, Qianyu Wang, Jiangshuai Fu, Pan School of Energy School of Oil and Gas Engineering Changzhou University China CNPC Engineering Technology R&D Company Limited National Engineering Research Center for Oil & Gas Drilling and Completion Technology

In order to accurately predict the injection and production gas flow rate and wellhead pressure for compressed air energy storage in salt cavern, a coupled prediction model of injection and production gas flow rate and wellhead pressure based on gas pipe flow theory was established in this paper. And, a high-precision and high-speed iterative solution algorithm was proposed to achieve accurate and rapid prediction of injection and production gas flow rate, wellhead pressure, and total pressure loss. Furthermore, the influences of factors such as cavity connectivity, number of cavities, cavity pressure, depth of injection and production wells, number of injection and production columns, size of injection and production columns, and injection and production medium on injection and production gas flow rate, wellhead pressure, and total pressure loss were discussed. The research results indicate that: ① There are good stability, fast convergence speed, and good consistency between the predicted results and on-site measured data for the model. ② Under the condition that cavity is connected, the total injection production flow rate will be evenly distributed to each injection production well, and the wellhead pressure and total pressure loss of each injection production well are consistent. Under the condition that cavity is not connected, injection production wells with higher cavity pressure have greater injection production gas flow rate and total pressure loss. ③ With the increase in the number of chambers, the decrease in chamber pressure, the increase in injection production well depth, the increase in the number of injection production columns, and the decrease in the size of injection production columns, the single tube injection production gas flow rate decreases. However, the changes in wellhead pressure and total pressure loss are not only influenced by various factors, but also closely related to operating conditions. ④ When other conditions remain unchanged,

关键词： Compressed air

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Beta-phase transformation of polyvinylidene fluoride with supersonically sprayed ZnSnO_(3) cuboids for flexible piezoelectric nanogenerators

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Journal of Materials Science & technology 2024年第10期177卷 103-113页

作者： Bhavana Joshi Taegun Kim Woojin Lim Edmund Samue Chanwoo Park Ali Aldalbahi Mohamed El-Newehy Hae-Seok Lee Seongpil An Sam S.Yoon School of Mechanical Engineering Korea UniversitySeoul 02841Republic of Korea Core Component Technology Team Samsung Electronics Co Ltd.Mobile R&D CenterSamsung-roSuwon-siGyeonggi-doRepublic of Korea Energy Environment Policy and Technology Graduate School of Energy and Environment(KU-KIST Green School)Korea UniversitySeoul 02841Republic of Korea Department of Chemistry College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia SKKU Advanced Institute of Nanotechnology(SAINT) Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Department of Nano Science and Technology Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Department of Nano Engineering Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea

Flexible self-powered electromechanical devices,such as piezoelectric nanogenerators(PENGs),which are used in wearable and implantable devices,are emerging as state-of-the-art clean energy *** this study,a scalable supersonic spraying technique was used to prepare flexible piezocomposite films of polyvinylidene fluoride(PVdF)and hydrothermally synthesized ZnSnO_(3)(ZSO)cubes for *** spectra confirmed that the transformation of the α-phase of PVdF to its β-phase was induced by the shear stress generated between the ZSO particles and PVdF polymer during supersonic *** op-timized sample comprising 0.43 g of ZSO cubes and 1 g of PVdF produced a maximum piezopotential of 41.5 V and a short-circuit current,I_(sc),of 52.5 μA.A maximum power density of 50.6 μW cm-2 was ob-tained at a loading resistance of 0.4 MΩ,which matched the impedance of the ***-term tapping and bending cycles of N_(tap)=4200 and N_(bend)=600 yielded piezopotentials of 40.5 and 1.7 V,*** addition,electrical poling for 2 h increased the piezopotential to 52 V owing to the alignment of the ferroelectric dipoles in the PVdF.

关键词： ZnSnO_(3) PVdF Composite Perovskite Supersonic cold spray Piezoelectric nanogenerator

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Flowers: precious food and medicine resources

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Food Science and Human Wellness 2023年第4期12卷 1020-1052页

作者： Xuqiang Liu Senye Wang Lili Cui Huihui Zhou Yuhang Liu Lijun Meng Sitan Chen Xuefeng Xi Yan Zhang Wenyi Kang National R&D Center for Edible Fungus Processing Technology Henan UniversityKaifeng 475004China Functional Food Engineering Technology Research Center Kaifeng 475004China Joint International Research Laboratory of Food&Medicine Resource Function Kaifeng 475004China College of Physical Education Henan UniversityKaifeng 475004China Hebei Food Safety Key Laboratory Hebei Food Inspection and Research InstituteShijiazhuang 050091China Shenzhen Research Institute of Henan University Shenzhen 518000China

Flower plants are popular all over the world and important sources of ornamental plants,bioactive molecules and *** have a wide range of biological activities and beneficial pharmacological *** and their active ingredients are becoming more and more popular in the preparation of food,drugs and industrial *** paper summarizes the active ingredients,pharmacological activities and applications in the pharmaceutical and food industries of flower plants in recent *** addition,the possible molecular mechanism of pharmacological effects of flower plants were also discussed.302 active constituents from 55 species of flower plants were summarized,including flavonoids(115),terpenoids(90),phenylpropanoids(20),alkaloids(13),organic acids(27)and others(37).The pharmacological effects of flower plants are very extensive,mainly including antioxidant,anti-inflammatory,anti-tumor,anti-virus,and *** mechanisms of anti-inflammatory,anti-tumor and hypoglycemic activities present the characteristics of multi-way and *** of its rich nutrients,bioactive ingredients and plant essential oils,and its wide sources,flower plants are widely used in food,beverage,cosmetics and drug *** plants also play an important role in pharmaceutical industry,food industry and other fields.

关键词： Flowers Active ingredients Biological activity Mechanism

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Immunoregulatory polysaccharides from Apocynum venetum *** stimulate phagocytosis and cytokine expression via activating the NF-κB/MAPK signaling pathways in rAW264.7 cells

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Food Science and Human Wellness 2022年第4期11卷 806-814页

作者： Honglin Wang Changyang Ma dongxiao Sun-Waterhouse Jinmei Wang Geoffrey Ivan Neil Waterhouse Wenyi Kang National R&D Center for Edible Fungus Processing Technology Henan UniversityKaifeng 475004China Functional Food Engineering Technology Research Center Kaifeng 475004China School of Chemical Sciences University of AucklandAuckland 1142New Zealand Joint International Research Laboratory of Food&Medicine Resource Function Kaifeng 475004China

Two immunomodulatory polysaccharides(Vp2a-Ⅱ and Vp3) were isolated and identified from Apocynum venetum L. flowers, and their innate immune-stimulating functions and working mechanisms were evaluated in rAW264.7 cells. Both the level of released nitric oxide(NO) and expression of inducible nitric oxide synthase(iNOS) m rNA were significantly enhanced in the rAW264.7 macrophages cells treated by Vp2a-Ⅱ and Vp3. Vp2a-Ⅱ(100–800 μg/m L) and Vp3(400 μg/mL) could significantly increase the phagocytic activity of rAW264.7 cells and the secretion and m rNA expression of TNF-α and IL-6 in a concentrationdependent manner through affecting mitogen-activated protein kinase(MAPK) activity and nuclear factor κB(NF-κB) nuclear translocation. Vp2a-Ⅱ might activate the MAPK signaling pathways and induce the nuclear translocation of NF-κB p65, whilst Vp3 likely activated the NF-κB and MAPK signaling pathways without influencing the p38 MAPK route.

关键词： Apocynum venetum L.flowers Immunomodulatory polysaccharide rAW264.7 cells NF-κB signaling pathway MAPK signaling pathway

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