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Deciphering the Origins of P1-Induced Power Losses in Cu(Inx,Ga1–x)Se2 (CIGS) Modules Through Hyperspectral Luminescence Article

César Omar Ramírez Quiroz, Laura-Isabelle Dion-Bertrand, Christoph J. Brabec, Joachim Müller, Kay Orgassa

Engineering 2020, Volume 6, Issue 12,   Pages 1395-1402 doi: 10.1016/j.eng.2019.12.019

Abstract: losses and introduce new insights into the improvement of current strategies for industry-relevant module

Keywords： Cu(Inx     Ga1-x)Se2     Cell-to-module efficiency gap     P1-induced power losses     Hyperspectral photoluminescence    

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An extended cell-based smoothed discrete shear gap method (XCS-FEM-DSG3) for free vibration analysis

M. H. NGUYEN-THOI,L. Le-ANH,V. Ho-HUU,H. Dang-TRUNG,T. NGUYEN-THOI

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 341-358 doi: 10.1007/s11709-015-0302-1

Abstract: A cell-based smoothed discrete shear gap method (CS-FEM-DSG3) was recently proposed and proven to beThe method improves significantly the accuracy of the solution due to softening effect of the cell-basedsingular enrichment functions of the extended finite element method (XFEM) to give a so-called extended cell-basedsmoothed discrete shear gap method (XCS-FEM-DSG3).

Keywords： cracked Reissner-Mindlin shell     free vibration analysis     cell-based smoothed discrete shear gap method(CS-FEM-DSG3)     extended cell-based smoothed discrete shear gap method (XCS-FEM-DSG3)     smoothed finite element    

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Fluorene-based narrow-band-gap copolymers for red light-emitting diodes and bulk heterojunction photovoltaic

SUN Mingliang, WANG Li, XIA Yangjun, DU Bin, LIU Ransheng, CAO Yong

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 257-264 doi: 10.1007/s11705-008-0052-x

Abstract: A series of narrow band-gap conjugated copolymers (PFO-DDQ) derived from 9,9-dioctylfluorene (DOF) andEfficient energy transfer due to exciton trapping on narrow-band-gap DDQ sites has been observed.The highest external quantum efficiency achieved with the device configuration ITO/PEDOT/PVK/PFO-DDQ15/Ba/Al is 1.33% with a luminous efficiency 1.54 cd/A.This indicates that these kinds of low band-gap polymers are promising candidates for polymeric solar

Keywords： simulator     Efficient     band-gap     PFO-DDQ50     intensity    

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Factors influencing the somatic cell nuclear transfer efficiency in pigs

Yong JIN, Manling ZHANG, Xinrong JU, Shuang LIANG, Qiang XIONG, Lihua ZHAO, Xiaowei NIE, Daorong HOU, Qiang LIU, Junzheng WANG, Chenyu WANG, Xiaokang LI, Lining ZHANG, Xiaorui LIU, Ying WANG, Haiyuan YANG, Yifan DAI, Rongfeng LI

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 1,   Pages 73-80 doi: 10.15302/J-FASE-2018220

Abstract:

Using a data set from our laboratory, we assessed the effects of several factors on pig cloning efficiencyThe results demonstrated that cells at high confluence (>90%) used as donor cell resulted in higherThe number of blastocysts transferred by somatic cell nuclear transfer (SCNT) did not significantly affecthigher pregnancy rate compared with one to two cell SCNT embryos from overnight culture.Our data might be helpful for improving SCNT efficiency in pigs.

Keywords： blastocyst     donor cell     estrus synchronization     pregnancy rate     pig cloning     somatic cell nuclear transfer    

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Air bearing center cross gap of neutron stress spectrometer sample table support system

Yang LI,Yunxin WU,Hai GONG,Xiaolei FENG

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 403-411 doi: 10.1007/s11465-016-0405-y

Abstract: To study the performance of air bearing center cross gap, finite element models (FEMs) were establishedbased on air motion and Reynolds equations, effects of air supply pressure, and gap parameters on theoverturning moment and bearing capacity of air bearing center cross gap were analyzed.When gap width is lesser than 1 mm and gap depth is lower than 0.4 mm, bearing capacity and overturningA gap height difference results in the bearing capacity dropping rapidly.

Keywords： neutron stress spectrometer     sample table     support system     air bearing     center cross gap     simulation     experiment    

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Bridging the gap: Neuro-Symbolic Computing for advanced AI applications in construction

Frontiers of Engineering Management   Pages 727-735 doi: 10.1007/s42524-023-0266-0

Abstract: Deep Learning (DL) has revolutionized the field of Artificial Intelligence (AI) in various domains such as computer vision (CV) and natural language processing. However, DL models have limitations including the need for large labeled datasets, lack of interpretability and explainability, potential bias and fairness issues, and limitations in common sense reasoning and contextual understanding. On the other side, DL has shown significant potential in construction for safety and quality inspection tasks using CV models. However, current CV approaches may lack spatial context and measurement capabilities, and struggle with complex safety and quality requirements. The integration of Neuro-Symbolic Computing (NSC), an emerging field that combines DL and symbolic reasoning, has been proposed as a potential solution to address these limitations. NSC has the potential to enable more robust, interpretable, and accurate AI systems in construction by harnessing the strengths of DL and symbolic reasoning. The combination of symbolism and connectionism in NSC can lead to more efficient data usage, improved generalization ability, and enhanced interpretability. Further research and experimentation are needed to effectively integrate NSC with large models and advance CV technologies for precise reporting of safety and quality inspection results in construction.

Keywords： advanced AI in construction     safety and quality inspection     Neuro-Symbolic Computing     Deep Learning     computer vision    

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Variable identification and automatic tuning of the main module of a servo system of parallel mechanism

YANG Zhiyong, XU Meng, HUANG Tian, NI Yanbing

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 82-88 doi: 10.1007/s11465-007-0014-x

Abstract: The variables of the main module of a servo system for miniature reconfigurable parallel mechanism wereWith the reverse solution module of the translation, the module with the exerted translation joint was

Keywords： acceleration     reconfigurable parallel     additive     sequence     parallel mechanism    

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Wide gap active brazing of ceramic-to-metal-joints for high temperature applications

K. Bobzin,L. Zhao,N. Kopp,S. Samadian Anavar

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 1,   Pages 71-74 doi: 10.1007/s11465-014-0291-0

Abstract: metal, active elements and WC particles were analyzed to understand the mechanism of the so called wide gap

Keywords： wide gap     active brazing     nickel filler metals     high temperature application     WC     Al2O3   

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Organophosphate esters in sediment from Taihu Lake, China: Bridging the gap between riverine sources

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 3, doi: 10.1007/s11783-021-1464-9

Abstract:

• Eleven OPEs were detected in river sediment and lake sediment in Taihu Lake.

Keywords： Organophosphate esters     Partition     Vertical distribution     Composition profile     Positive matrix factorization    

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Investigating the role of exiting vehicles and turn indicator usage in gap acceptance at single-lane

Nathan P. BELZ

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 1,   Pages 8-16 doi: 10.1007/s11709-016-0365-7

Abstract: This research addresses the nature of gap distributions and use of turn indicators by exiting vehiclesThis behavior is of particular concern for intersection efficiency (i.e., delay) and sustainability (

Keywords： roundabouts     exiting vehicles     turn indicator use     headways    

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Microalgae

Sanath KONDAVEETI,Kwang Soon CHOI,Ramesh KAKARLA,Booki MIN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 784-791 doi: 10.1007/s11783-013-0590-4

Abstract: Renewable algae biomass, was used as substrate for generating electricity in two chamber microbial fuel cells (MFCs). From polarization test, maximum power density with pretreated algal biomass was 102 mW·m (951 mW·m ) at current generation of 276 mA·m . The individual electrode potential as a function of current generation suggested that anodic oxidation process of algae substrate had limitation for high current generation in MFC. Total chemical oxygen demand (TCOD) reduction of 74% was obtained when initial TCOD concentration was 534 mg·L for 150 h of operation. The main organic compounds of algae oriented biomass were lactate and acetate, which were mainly used for electricity generation. Other by-products such as propionate and butyrate were formed at a negligible amount. Electrochemical Impedance Spectroscopy (EIS) analysis pinpointed the charge transfer resistance (112 ?) of anode electrode, and the exchange current density of anode electrode was 1214 nA·cm .

Keywords： microbial fuel cell (MFC)     algae     bioelectricity     substrate     volatile fatty acid     biomass     COD removal efficiency    

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High-quality industrial n-type silicon wafers with an efficiency of over 23% for Si heterojunction solar

Fanying MENG,Jinning LIU,Leilei SHEN,Jianhua SHI,Anjun HAN,Liping ZHANG,Yucheng LIU,Jian YU,Junkai ZHANG,Rui ZHOU,Zhengxin LIU

Frontiers in Energy 2017, Volume 11, Issue 1,   Pages 78-84 doi: 10.1007/s11708-016-0435-5

Abstract: Furthermore, the dependence of SHJ solar cell open-circuit voltage on the surface topography was discussedMoreover, the simulation revealed that the highest efficiency of the SHJ solar cell could be achievedFortunately, over 23% of the conversion efficiency of the SHJ solar cell with a wafer thickness of 100µm was obtained based on the systematic optimization of cell fabrication process in the pilot productionSHJ solar cell.

Keywords： n-type Cz-Si     thinner wafer     surface texture     high efficiency     SHJ solar cell    

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Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 711-725 doi: 10.1007/s11465-021-0647-1

Abstract: VSA follows the idea of modular design, mainly including a variable stiffness module and a drive moduleThe variable stiffness module transmits the motion from the drive module in a roundabout manner, makingAs the key component of the variable stiffness module, a stiffness adjustment mechanism with a symmetrical

Keywords： variable stiffness actuator     variable stiffness module     drive module     symmetrical structure     double-deck    

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Bridging the gap between laboratory and field moduli of asphalt layer for pavement design and assessment

Huailei CHENG; Liping LIU; Lijun SUN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 267-280 doi: 10.1007/s11709-022-0811-7

Abstract: Asphalt pavement is a key component of highway infrastructures in China and worldwide. In asphalt pavement design and condition assessment, the modulus of the asphalt mixture layer is a crucial parameter. However, this parameter varies between the laboratory and field loading modes (i.e., loading frequency, compressive or tensile loading pattern), due to the viscoelastic property and composite structure of the asphalt mixture. The present study proposes a comprehensive frequency-based approach to correlate the asphalt layer moduli obtained under two field and three laboratory loading modes. The field modes are vehicular and falling weight deflectometer (FWD) loading modes, and the laboratory ones are uniaxial compressive (UC), indirect tensile (IDT), and four-point bending (4PB) loading modes. The loading frequency is used as an intermediary parameter for correlating the asphalt layer moduli under different loading modes. The observations made at two field large-scale experimental pavements facilitate the correlation analysis. It is found that the moduli obtained via laboratory 4PB tests are pretty close to those of vehicular loading schemes, in contrast to those derived in UC, IDT, and FWD modes, which need to be adjusted. The corresponding adjustment factors are experimentally assessed. The applications of those adjustment factors are expected to ensure that the moduli measured under different loading modes are appropriately used in asphalt mixture pavement design and assessment.

Keywords： asphalt mixture layer     stiffness modulus     loading mode     UC/4PB/IDT     FWD     frequency    

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A novel PV sub-module-level power-balancing topology for maximum power point tracking under partial shading Article

Mustafa GOKDAG,Mehmet AKBABA

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 12,   Pages 1388-1396 doi: 10.1631/FITEE.1500322

Abstract: topology benefits from the switched-capacitor (SC) converter concept and is an applica-tion for sub-module-level

Keywords： Sub-module-level maximum power point tracking (MPPT)     Differential power processing (DPP)     Distributed    

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Title Author Date Type Operation

Deciphering the Origins of P1-Induced Power Losses in Cu(Inx,Ga1–x)Se2 (CIGS) Modules Through Hyperspectral Luminescence

César Omar Ramírez Quiroz, Laura-Isabelle Dion-Bertrand, Christoph J. Brabec, Joachim Müller, Kay Orgassa

Journal Article

An extended cell-based smoothed discrete shear gap method (XCS-FEM-DSG3) for free vibration analysis

M. H. NGUYEN-THOI,L. Le-ANH,V. Ho-HUU,H. Dang-TRUNG,T. NGUYEN-THOI

Journal Article

Fluorene-based narrow-band-gap copolymers for red light-emitting diodes and bulk heterojunction photovoltaic

SUN Mingliang, WANG Li, XIA Yangjun, DU Bin, LIU Ransheng, CAO Yong

Journal Article

Factors influencing the somatic cell nuclear transfer efficiency in pigs

Yong JIN, Manling ZHANG, Xinrong JU, Shuang LIANG, Qiang XIONG, Lihua ZHAO, Xiaowei NIE, Daorong HOU, Qiang LIU, Junzheng WANG, Chenyu WANG, Xiaokang LI, Lining ZHANG, Xiaorui LIU, Ying WANG, Haiyuan YANG, Yifan DAI, Rongfeng LI

Journal Article

Air bearing center cross gap of neutron stress spectrometer sample table support system

Yang LI,Yunxin WU,Hai GONG,Xiaolei FENG

Journal Article

Bridging the gap: Neuro-Symbolic Computing for advanced AI applications in construction

Journal Article

Variable identification and automatic tuning of the main module of a servo system of parallel mechanism

YANG Zhiyong, XU Meng, HUANG Tian, NI Yanbing

Journal Article

Wide gap active brazing of ceramic-to-metal-joints for high temperature applications

K. Bobzin,L. Zhao,N. Kopp,S. Samadian Anavar

Journal Article

Organophosphate esters in sediment from Taihu Lake, China: Bridging the gap between riverine sources

Journal Article

Investigating the role of exiting vehicles and turn indicator usage in gap acceptance at single-lane

Nathan P. BELZ

Journal Article

Microalgae

Sanath KONDAVEETI,Kwang Soon CHOI,Ramesh KAKARLA,Booki MIN

Journal Article

High-quality industrial n-type silicon wafers with an efficiency of over 23% for Si heterojunction solar

Fanying MENG,Jinning LIU,Leilei SHEN,Jianhua SHI,Anjun HAN,Liping ZHANG,Yucheng LIU,Jian YU,Junkai ZHANG,Rui ZHOU,Zhengxin LIU

Journal Article

Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

Journal Article

Bridging the gap between laboratory and field moduli of asphalt layer for pavement design and assessment

Huailei CHENG; Liping LIU; Lijun SUN

Journal Article

A novel PV sub-module-level power-balancing topology for maximum power point tracking under partial shading

Mustafa GOKDAG,Mehmet AKBABA

Journal Article