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| 1 | 构建数字化学习的维度显示文摘信息技术的进步及学习科学的发展为创建设计良好、以学习者为中心、引人入胜、互动、价格公道、高效、接入方便、灵活、分布合理、便捷的数字化学习环境提供了机遇.在数字化学习的每一发展阶段,周密的分析和调查如何运用互联网的潜能是必要的,以使之与教学设计的原理相一致. | Badrul H.Khan 张晴 张来春 | 2002 | 开放教育研究2002,8,6: | 5 |
| 2 | 开放灵活的分布式学习环境显示文摘为了帮助设计者创建开放、灵活的分布式E-Learning环境,该文提出了一个E-Learning框架模型,从八个维度列出了E-Learning设计中需要考虑的关键问题:机构,教学,技术,界面设计,评价,管理,资源支持,伦理。 | 张建伟(译) | 2003 | 现代教育技术2003,13,4: | 3 |
| 3 | E-Learning 3P模型:人-过程-结果的交互体显示文摘人-过程-结果的交互过程或3P模型为设计、开发、评价、实施以及管理e-learning和其他混合的学习材料与学习系统提供了一个综合图解,文章讨论了不同的人在开发e-learning方式或其他混合学.--j方式的产品时所经历的各种阶段及其相应的责任。 | Badrul H.Khan 薛二勇 盛群力 | 2005 | 远程教育杂志2005,23,3: | 3 |
| 4 | UV RADIATION INDUCED GRAFT COPOLYMERIZATION OF ALLYL ACETATE ONTO POLY(ETHYLENE TEREPHTHALATE)(PET) FILMS FOR FUEL CELL MEMBRANES显示文摘紫外(紫外) allyl 的导致的接枝 copolymerization 醋酸盐(AA ) 单体到上(乙烯 terephthalate )( 宠物) poly 拍摄并且在用 chlorosulfonic 酸(ClSO3H ) 的 grafting 链的单体单位上的随后的 sulfonation 被执行为燃料房间准备质子交换膜(PEM ) 。12.8% 的最大的 grafting 价值被作出对有利的裁决在 3 h 放射时间以后的 35 vol% allyl 醋酸盐。ClSO3H 的最佳集中为基于 sulfonation 的度和膜的张力的力量研究是 0.05 mol/L 的 sulfonation 反应被选择。当 sulfonation 反应温度和 sulfonation 时间正在增加, sulfonation 的度增加了。放射 grafting 和 sulfonation 被 titrimetric 和 gravimetric 分析以及 FTIR 光谱学证实了。0.04125 mmol g1 的离子交换能力(IEC ) 在 sulfonation 和最大的质子电导率的 12.1% 度被发现的最大值被发现是在 30 牧敥漠 ? 潩楮慺楴湯 ? 的 0.035 S cm1 ? 湡 ? 潣湵整 ? 潩 ? 楢摮湩 ??. 吗?? | Mostak Ahmed Mubarak A.Khan Nazia Rahman M.Anwar H.Khan | 2012 | Chinese Journal of Polymer Science2012,30,2: | 1 |
| 5 | Prognostic Indicators of Mortality in Fulminant Hepatic Failure: King's Criteria Revisited显示文摘 | W.Jafri A.Hassan Saeed.Hamid H.Shah R.Khan S.Memon T.Hassan H.Mirza A.Mohammad H.Khan | 2000 | 胃肠病学2000,5,B08: | 1 |
| 6 | 汽车用聚酰胺纤维全球动向显示文摘现今,聚酰胺(PA)纱作为复合地面系统的一部分,为驾驶提供了舒适的环境。但受成本的驱使,新的替代品不断涌现,如聚酯(PET)或聚丙烯(PP)纱线和针刺材料,以及聚乳酸纤维(PLA)和新型聚酯纤维(PTT)等从生物中提炼出的非石油基的材料。此外,由于小汽车数量的不断增加,汽车地面系统表层材料将采用针刺地毯复合到簇绒地毯上的新型产品。 | M.N.Meenakshisundaram D.O’Regan H.Khan K.Anderson 汪玲玲(译) | 2009 | 国际纺织导报2009,37,3: | 1 |
| 7 | Estimation and comparison of night-time OH levels in the UK urban atmosphere using two different analysis methods显示文摘Night-time OH levels have been determined for UK urban surface environments using two methods,the decay and steady state approximation methods.Measurement data from the UK National Environmental Technology Centre archive for four urban sites(Bristol,Harwell,London Eltham and Edinburgh) over the time period of 1996 to 2000 have been used in this study.Three reactive alkenes,namely isoprene,1,3-butadiene and trans-2-pentene were chosen for the calculation of OH levels by the decay method.Hourly measurements of NO,NO2,O3,CO and 20 VOCs were used to determine night-time OH level using the steady state approximation method.Our results showed that the night-time OH levels were in the range of 1×105-1×106 molecules/cm3 at these four urban sites in the UK.The application of a t-test of these analyses indicated that except Bristol,there was no significant difference between the OH levels found from the decay and steady state approximation methods.Night-time levels of the OH radical appeared to peak in summer and spring time tracking the night-time O3 levels which also passed through a maximum at this time. | M.Anwar H.Khan M.M.Nazmul Hoque S.Shamsul Alam M.J.Ashfold Graham Nickless Dudley E.Shallcross | 2011 | Journal of Environmental Sciences2011,23,1: | 1 |
| 8 | Influence of metal/composite interface on the damage behavior and energy absorption mechanisms of FMLs against projectile impact显示文摘This paper focuses on the interface failure in metal/GFRP laminates on account of the high-velocity impact phenomenon by a hemispherical projectile.The study considers three laminates in which the failure inside the 8-layer 0/90 GFRP laminate is compared with the other two laminates that include metal layers in their layup configuration.The metal layers were placed on the top and bottom on one type of laminates while in the other additional metal layers are placed symmetrically inside the layup as well.They were subjected to high-velocity impact by a hemispherical projectile at different energy levels and the idea is not to perforate the laminate configuration instead to account for the damage incurred in these laminates and the role of metal layers in providing resistance to damage within these laminates.The study utilizes experimental findings and proposes a rate-dependent Finite Element(FE)model consisting of the Hashin-Puck failure scheme for composite and the Johnson-Cook damage model for metal layers.The results of the model satisfactorily agree with their experimental counterparts and provide valuable insight into the damage resistance inside the laminates.It has been observed that the 8-layer GFRP laminate was good in terms of elastic recovery and prevention of propagation of damage inside the laminates only,till the impact energy was lower.For higher impact energy,they show poor damage resistance as the fiber failure is triggered in them.However,laminates with metal layers are shown to protect the laminate by dissipating energy in the delamination of metal/GFRP interface,shear failure of the metal layer,and on account of metal plasticity.The study further shows that the throughthickness compressive stresses were responsible for the failure of laminates and also triggering the delamination in them.A damage energy study was performed to investigate the amount of energy dissipating in various failure modes like delamination,matrix cracking,fiber failure,etc。 | Sanan H.Khan Ankush P.Sharma | 2022 | Defence Technology(防务技术)2022,18,3: | 0 |
| 9 | Positively charged patches:tonic for CAR ftness显示文摘Tonic signaling is a constitutive low-level activation of chimeric antigen receptors(CARs)in the absence of tumor antigen and plays an imperative role in the CAR-T efficacy.In a recent paper published in Cell Research,Chen et al.show that the positively charged patches on the surface of the CAR antigen-binding domain regulate CAR tonic signaling and open a door to further optimization of improvements of CAR. | Meraj H.Khan Jan Joseph Melenhorst | 2023 | Cell Research2023,33,5: | 0 |
| 10 | Managing Health Treatment by Optimizing Complex Lab-Developed Test Configurations: A Health Informatics Perspective显示文摘A complex Laboratory Developed Test(LDT)is a clinical test developed within a single laboratory.It is typically configured from many fea-ture constraints from clinical repositories,which are part of the existing Lab-oratory Information Management System(LIMS).Although these clinical repositories are automated,support for managing patient information with test results of an LDT is also integrated within the existing LIMS.Still,the support to configure LDTs design needs to be made available even in standard LIMS packages.The manual configuration of LDTs is a complex process and can generate configuration inconsistencies because many constraints between features can remain unsatisfied.It is a risky process and can lead patients to undergo unnecessary treatments.We proposed an optimized solution(opt-LDT)based on Genetic Algorithms to automate the configuration and resolve the inconsistencies in LDTs.Opt-LDT encodes LDT configuration as an optimization problem and generates a consistent configuration that satisfies the constraints of the features.We tested and validated opt-LDT for a local secondary care hospital in a real healthcare environment.Our results,averaged over ten runs,show that opt-LDT resolves 90%of inconsistencies while taking between 6 and 6.5 s for each configuration.Moreover,positive feedback based on a subjective questionnaire from clinicians regarding the performance,acceptability,and efficiency of opt-LDT motivates us to present our results for regulatory approval. | Uzma Afzal Tariq Mahmood Ali Mustafa Qamar Ayaz H.Khan | 2023 | Computers, Materials & Continua2023,,6: | 0 |
| 11 | A macroscopic traffic model based on weather conditions显示文摘A traffic model based on the road surface conditions during adverse weather is presented. The surface of a road is affected by snow, compacted snow, and ice, which affects the traffic behavior. In this paper, a new macroscopic traffic flow model based on the transition velocity distribution is proposed which characterizes traffic alignment under adverse weather conditions. Two examples are considered to illustrate the effect of the transition velocity behavior on traffic velocity and density. Simulation results are presented which show that this model provides a more accurate characterization of traffic flow behavior than the well known Payne–Whitham model. The proposed model can be used to reduce accidents and improve road safety during adverse weather conditions. | Zawar H.Khan Syed Abid Ali Shah T.Aaron Gulliver | 2018 | Chinese Physics B2018,27,7: | 0 |