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21世纪能力视域下新加坡体育课程标准的内涵释义、特点解析与经验启示

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体育科学研究 2024年第3期28卷 58-66页

作者：叶松东贾晨 koh Koon teck 华南师范大学体育科学学院广东广州510006 广东第二师范学院体育学院广东广州510310 南洋理工大学国立教育学院新加坡639798

发展学生21世纪能力已成为国际社会应对全球快速发展的教育共识。运用文献研究、文本分析及访谈等方法,明晰了新加坡学生21世纪能力的基本内涵,在厘清21世纪能力与体育课程价值互构的基础上,对新加坡体育课程标准的设计思路与基本特点... 详细信息

发展学生21世纪能力已成为国际社会应对全球快速发展的教育共识。运用文献研究、文本分析及访谈等方法,明晰了新加坡学生21世纪能力的基本内涵,在厘清21世纪能力与体育课程价值互构的基础上,对新加坡体育课程标准的设计思路与基本特点进行了探讨。研究发现:新加坡基于全球变革与国家需要提出了聚焦21世纪能力培养的总体教育目标,并将体育课程作为实现此目标的重要手段,其构建了“四位一体”的发展框架,形成了覆盖全学段的一体化体育课程体系。从理念、思路、内容与评价维度呈现出整体塑造、融合发展、多维延展、系统嵌入的特点。对我国在完善面向世界与未来的学科核心素养体系、加强课程目标与学科核心素养的紧密衔接、构建学业质量标准指引下的学习评价系统、提升整体课程观视野下体育课程实施质量方面具有启示意义。

关键词： 21世纪能力新加坡体育课程标准竞技运动

Towards efficient and stable perovskite photovoltaics with F-contained phosphoric salt surface passivation

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Towards efficient and stable perovskite photovoltaics with F...

Performance of pulsed plasma thruster at low discharge energy

第六届新型太阳能电池材料科学与技术学术研讨会

作者： Guifang Han teck ming koh Jia Li Benny Febriansyah Nur Fadilah Jamaludin Subodh Mhaisalkar Nripan Mathews Energy Research Institute NTU (ERI N) Nanyang Technological UniversityResearch Techno Plaza School of Materials Science and Engineering Nanyang Technological University

Surface passivation has been proved as an effective strategy to improve the efficiency and stability of perovskite solar cells. However there is no report on how to choose the passivator, whether it should form as strong or weak bond with perovskite beneath. Here we selectively choose two molecular, alkali carbon chain phosphoric

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Plasma Science and Technology 2024年第4期26卷 122-132页

作者：李鸿俊林泽豪胡浩俊吴文东陈爱虹杜德扬 Department of Physics Faculty of ScienceUniversity of MalayaKuala Lumpur 50603Malaysia Faculty of Engineering The University of Nottingham Malaysia CampusSemenyih 43500Malaysia Faculty of Engineering Multimedia UniversityCyberjaya 63100Malaysia

As the size of satellites scales down, low-power and compact propulsion systems such as the pulsed plasma thruster(PPT) are needed for stabilizing these miniature satellites in orbit. Most PPT systems are operated at 2 J or more of discharge energy. In this work, the performance of a PPT with a side-fed, tongue-flared electrode configuration operated within a lower discharge energy range of 0.5-2.5 J has been investigated. Ablation and charring of the polytetrafluoroethylene propellant surface were analyzed through field-effect scanning electron microscopy imaging and energy-dispersive X-ray spectroscopy. When the discharge energy fell below 2 J, inconsistencies occurred in the specific impulse and the thrust efficiency due to the measurement of the low mass bit. At energy ≥2 J, the performance parameters are compared with other PPT systems of similar configuration and discussed in depth.

关键词： pulsed plasma thruster low discharge energy performance parameters

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三芳基碳正离子在有机合成中的应用

有机化学 2024年第2期44卷 421-437页

作者：李路瑶贺忠文张振国贾振华罗德平河南工业大学前沿交叉科学与技术学院郑州450001 南洋理工大学物理与数学科学学院化学与生物化学系新加坡637371

三芳基碳正离子作为一种优异的路易斯酸,其最低空分子轨道(LUMO)轨道能级较低,易接受一对电子,被广泛应用于合成转化中,是重要的试剂和催化剂.近年来,三芳基碳正离子在有机合成中主要被用作催化剂、预催化剂、共催化剂和添加剂.此外,三... 详细信息

三芳基碳正离子作为一种优异的路易斯酸,其最低空分子轨道(LUMO)轨道能级较低,易接受一对电子,被广泛应用于合成转化中,是重要的试剂和催化剂.近年来,三芳基碳正离子在有机合成中主要被用作催化剂、预催化剂、共催化剂和添加剂.此外,三芳基碳正离子作为关键中间体,可以成功应用于四芳基甲烷的合成.综述了近年来三芳基碳正离子在有机合成中的应用进展,并总结了三芳基碳正离子在有机合成中的多种功能作用,希望引起广泛的关注.

关键词：三芳基碳正离子催化剂有机合成无金属

Mechano-responsive hydrogel for direct stem cell manufacturing to therapy

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Bioactive Materials 2023年第6期24卷 387-400页

作者： Yufeng Shou Ling Liu Qimin Liu Zhicheng Le Khang Leng Lee Hua Li Xianlei Li Dion Zhanyun koh Yuwen Wang Tong ming Liu Zheng Yang Chwee teck Lim Christine Cheung Andy Tay Department of Biomedical Engineering National University of Singapore117583Singapore Institute for Health Innovation&Technology National University of Singapore117599Singapore School of Civil Engineering and Architecture Wuhan University of Technology430070WuhanChina NUS Tissue Engineering Program National University of Singapore117510Singapore Lee Kong Chian School of Medicine Nanyang Technological University636921Singapore School of Mechanical and Aerospace Engineering Nanyang Technological University639798Singapore Institute of Molecular and Cell Biology Agency for ScienceTechnology and Research(A*STAR)138648Singapore Department of Orthopaedic Surgery Yong Loo Lin School of MedicineNational University of Singapore119288Singapore Mechanobiology Institute National University of Singapore117411Singapore

Bone marrow-derived mesenchymal stem cell(MSC)is one of the most actively studied cell types due to its regenerative potential and immunomodulatory *** cell expansion methods using 2D tissue culture plates and 2.5D microcarriers in bioreactors can generate large cell numbers,but they compromise stem cell potency and lack mechanical preconditioning to prepare MSC for physiological loading expected in *** overcome these challenges,in this work,we describe a 3D dynamic hydrogel using magneto-stimulation for direct MSC manufacturing to *** our technology,we found that dynamic mechanical stimulation(DMS)enhanced matrix-integrinβ1 interactions which induced MSCs spreading and *** addition,DMS could modulate MSC biofunctions including directing MSC differentiation into specific lineages and boosting paracrine activities(e.g.,growth factor secretion)through YAP nuclear localization and FAK-ERK *** our magnetic hydrogel,complex procedures from MSC manufacturing to final clinical use,can be integrated into one single platform,and we believe this‘all-in-one’technology could offer a paradigm shift to existing standards in MSC therapy.

关键词： Mesenchymal stem cell Dynamic mechanical stimulation Magnetic hydrogel Stem cell manufacturing Cell therapy

Can we omit systematic biopsies in patients undergoing MRI fusion-targeted prostate biopsies?

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Asian Journal of Andrology 2023年第1期25卷 43-49页

作者： Jeffrey J Leow Soon Hock koh Marcus WL Chow Wayren Loke Rolando Salada Seok Kwan Hong Yuyi Yeow Chau Hung Lee Cher Heng Tan teck Wei Tan Department of Urology Tan Tock Seng HospitalSingapore 308433Singapore Lee Kong Chian School of Medicine Nanyang Technological UniversitySingapore 308232Singapore Department of Diagnostic Radiology Tan Tock Seng HospitalSingapore 308433Singapore

Magnetic resonance imaging(MRI)-targeted prostate biopsy is the recommended investigation in men with suspicious lesion(s)on *** role of concurrent systematic in addition to targeted biopsies is currently *** our prospectively maintained database,we identified men with at least one Prostate Imaging-Reporting and Data System(PI-RADS)≥3 lesion who underwent targeted and/or systematic biopsies from May 2016 to May *** significant prostate cancer(csPCa)was defined as any Gleason grade group≥2 *** 545 patients who underwent MRI fusion-targeted biopsy,222(40.7%)were biopsy naïve,247(45.3%)had previous prostate biopsy(s),and 76(13.9%)had known prostate cancer undergoing active *** cancer was more commonly found in biopsy-naïve men(63.5%)and those on active surveillance(68.4%)compared to those who had previous biopsies(35.2%;both P<0.001).Systematic biopsies provided an incremental 10.4%detection of csPCa among biopsy-naïve patients,versus an incremental 2.4%among those who had prior negative *** regression found age(odds ratio[OR]=1.03,P=0.03),prostate-specific antigen(PSA)density≥0.15 ng ml^(−2)(OR=3.24,P<0.001),prostate health index(PHI)≥35(OR=2.43,P=0.006),higher PI-RADS score(vs PI-RADS 3;OR=4.59 for PI-RADS 4,and OR=9.91 for PI-RADS 5;both P<0.001)and target lesion volume-to-prostate volume ratio≥0.10(OR=5.26,P=0.013)were significantly associated with csPCa detection on targeted *** conclusion,for men undergoing MRI fusion-targeted prostate biopsies,systematic biopsies should not be omitted given its incremental value to targeted biopsies *** factors such as PSA density≥0.15 ng ml^(−2),PHI≥35,higher PI-RADS score,and target lesion volume-to-prostate volume ratio≥0.10 can help identify men at higher risk of csPCa.

关键词： prostate biopsy prostate cancer prostate health index prostate-specific antigen software fusion Uronav

Accurate Location Estimation of Smart Dusts Using Machine Learning

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Computers, Materials & Continua 2022年第6期71卷 6165-6181页

作者： Shariq Bashir Owais Ahmed Malik Daphne teck Ching Lai Institute of Applied Data Analytics(IADA) Universiti Brunei Darussalam(UBD)GadongBE1410Brunei Darussalam School of Digital Sciences(SDS) Universiti Brunei Darussalam(UBD)GadongBE1410Brunei Darussalam

Traditional wireless sensor networks(WSNs)are not suitable for rough terrains that are difficult or impossible to access by *** dust is a technology that works with the combination of many tiny sensors which is highly useful for obtaining remote sensing information from rough *** tiny sensors are sprinkled in large numbers on rough terrains using airborne distribution through drones or aircraftwithout manually setting their *** it is clear that a number of remote sensing applications can benefit from this technology,but the small size of smart dust fundamentally restricts the integration of advanced hardware on tiny *** raises many challenges including how to estimate the location of events sensed by the smart *** solutions on estimating the location of events sensed by the smart dusts are not suitable for monitoring rough terrains as these solutions depend on relay sensors and laser patterns which have their own limitations in terms of power constraint and uneven *** study proposes a novel machine learning based localization algorithm for estimating the location of *** approach utilizes timestamps(time of arrival)of sensed events received at base stations by assembling them into a multidimensional vector and input to a machine learning classifier for estimating the *** to the unavailability of real smart dusts,we built a simulator for analysing the accuracy of the proposed approach formonitoring forest *** experiments on the simulator show reasonable accuracy of the approach.

关键词： Smart dust sensor localization remote sensing machine learning algorithms Internet of Things sensor applications

Microwave torrefaction of empty fruit bunch pellet:Simulation and validation of electric field and temperature distribution

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Journal of Bioresources and Bioproducts 2022年第4期7卷 270-277页

作者： Peter Nai Yuh Yek Sieng Huat Kong ming Chiat Law Changlei Xia Rock Keey Liew teck Sung Sie Jun Wei Lim Su Shiung Lam Centre for Research of Innovation and Sustainable Development University of Technology SarawakJalan UniversitySibuSarawak 96000Malaysia School of Foundation Studies University of Technology SarawakJalan UniversitySibuSarawak 96000Malaysia Department of Mechanical Engineering Faculty of Engineering and ScienceCurtin University Malaysia CampusMiriSarawak 98009Malaysia Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China NV WESTERN PLT GeorgetownPenang 10400Malaysia Department of Fundamental and Applied Sciences HICoE-Centre for Biofuel and Biochemical ResearchInstitute of Self-Sustainable BuildingUniversity Technology PETRONASDarul RidzuanSeri IskandarPerak 32610Malaysia Higher Institution Centre of Excellence(HICoE) Institute of Tropical Aquaculture and Fisheries(AKUATROP)University Malaysia TerengganuKuala NerusTerengganu 21030Malaysia Sustainability Cluster School of EngineeringUniversity of Petroleum&Energy StudiesDehradunUttarakhand 248007India

Microwave simulation is significant in identifying a reactor design allowing the biomass to be heated and processed *** study integrated the radio frequency and transient heat transfer modules to simulate the microwave distribution and investigated the performance of microwave heating in the *** simulation results were compared with the experimental findings us-ing the finite element analysis software of COMSOL MULTIPHYSICS to predict the temperature profile and electric field of microwave in the biomass(empty fruit bunch pellets).The higher temperature distribution was observed at the bottom and centre section of the empty fruit bunch pellet bed in the reactor,showing the uniqueness of microwave *** to the simula-tion results,the temperature profile obtained through the specific cavity geometry and dielectric properties agreed with the experimental temperature *** simulated temperature profile demonstrated a logarithmic increase of 120°C/min at the first 50 s followed by 50°C/min until 350 *** experimental temperature profile showed three different heating rates before reaching 300°C,including 78.3°C/min(50-120°C),30.6°C/min(121-250°C),and 105°C/min(250-300°C).The results of this study might contribute to the improvement of microwave heating in biomass torrefaction.

关键词： Microwave Torrefaction Simulation Energy Temperature

Robust Fingerprint Construction Based on Multiple Path Loss Model (M-PLM) for Indoor Localization

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Computers, Materials & Continua 2023年第1期74卷 1801-1818页

作者： Yun Fen Yong Chee Keong Tan Ian Kim teck Tan Su Wei Tan School of Information Technology Monash University MalaysiaSubang JayaSelangorMalaysia School of Mathematical and Computer Sciences Heriot-Watt University MalaysiaWilayah Persekutuan PutrajayaMalaysia

A robust radio map is essential in implementing a fingerprint-based indoor positioning system(IPS).However,the offline site survey to manually construct the radio map is time-consuming and *** interpolation techniques have been proposed to infer the virtual fingerprints to reduce the time and effort required for offline site *** paper presents a novel fingerprint interpolator using a multi-path loss model(MPLM)to create the virtual fingerprints from the collected sample data based on different signal paths from different access points(APs).Based on the historical signal data,the poor signal paths are identified using their standard *** proposed method reduces the positioning errors by smoothing out the wireless signal fluctuations and stabilizing the signals for those poor signal *** consideringmultipath signal propagations from different APs,the inherent noise from these signal paths can be ***,locations of the signal data with standard deviations higher than the threshold are *** new fingerprints are then generated at these locations based on the proposed M-PLM interpolation function to replace the old *** proposed technique interpolates virtual fingerprints based on good signal paths with more stable signals to improve the positioning *** results show that the proposed scheme enhances the positioning accuracy by up to 44%compared to the conventional interpolation techniques such as the Inverse DistanceWeighting,Kriging,and single Path *** a result,we can overcome the site survey problems for IPS by building an accurate radio map with more reliable signals to improve indoor positioning performance.

关键词： Path loss model radio map indoor positioning system interpolation fingerprinting