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| 1 | 序列模式图及其构造算法显示文摘序列模式挖掘是数据挖掘的一个重要分支 ,在序列事务及有关信息处理中有着广泛的应用 .目前已有许多序列模式模型及相应的挖掘算法 .该文在对序列模式挖掘问题及挖掘算法进行分析的基础上 ,定义了一种称为序列模式图的序列模式框架 ,用于表示序列模式挖掘过程发现的所有序列模式 .序列模式图是由离散状态的序列集到统一的图结构的桥梁 ,可以将序列模式挖掘结果统一到序列模式图中来 .基于序列模式图进行研究可发现某些结构化的新知识 ,称之为后序列模式挖掘 .文中还给出了序列模式图的有关性质及构造算法 . | 吕静 王晓峰 Osei Adjei Fiaz Hussain | 2004 | 计算机学报2004，27，6： | 16 |
| 2 | 基于嫦娥一号卫星微波辐射计数据的月球Cabeus撞击坑水冰含量研究显示文摘月球极地水冰存在与否、存在形式和存在数量等科学问题,是当前月球科学研究的重要目标之一.2009年10月9日,美国半人马座火箭和卫星相继撞击月球南极Cabeus撞击坑,证实了月球极地水冰的存在,但对其含量、分布范围等的研究还有争议.极地水冰的存在会改变极地月壤的介电常数,而微波辐射计是获取介质介电常数的最有效的工具.因此,根据37GHz频率条件下的月壤被动微波辐射传输数值模拟结果,改进月壤辐射传输模型.对比分析了Odelevsky模型、Wagner和Landau-Lifshitz模型、Clausius模型等8个常用的混合介电常数计算模型,表明Lichtenecker模型与改进的Dobson模型得到的介电常数值相差最大,折射模型得到的结果偏大,Odelevsky模型、强起伏定理与Wagner和Landau-Lifshitz模型、Clausius模型、Bruggeman-Hanai模型得到的结果非常接近.基于Odelevsky模型和改进的月壤辐射传输模拟,建立了月壤体积含冰量与微波辐射亮温的关系.并根据嫦娥一号卫星获取的相应的微波辐射计数据,进行了Cabeus撞击坑水冰含量反演研究.结果表明,改进的辐射传输模型适用于高频条件下的一层月壤辐射传输模拟;月球南极Cabeus撞击坑地区月壤微波辐射亮温为69.93K(37GHz),相应的体积含冰量约为2.8%. | 孟治国 陈圣波 Edward Matthew Osei Jnr 汪自军 崔腾飞 | 2010 | 中国科学:物理学、力学、天文学2010，40，11： | 5 |
| 3 | Volume warrants for major and minor roads left-turning traffic lanes at unsignalized T-intersections: A case study using VISSIM modelling显示文摘The most common type of intersection improvement considered in Ghana is signalization.However, other actions such as the installation of left-turn lanes have been proven to improve the efficiency and safety of an intersection without the need for signalization in the short term. Warrants which guide the installation of such lanes in Ghana are adopted from elsewhere and as a result do not reflect local traffic flow conditions. This study established volume warrants based on a delay threshold to guide the installation of leftturn lanes at unsignalized T-intersections using VISSIM micro simulation tool. The VISSIM model was calibrated using traffic flow, delay, average and maximum queue length data obtained from a two-hour video recording of the case study intersection during the morning peak period. After calibration, several scenarios covering a wide range of operational conditions were simulated. Using level of service(LOS) C cut off point of 25 s/veh as the maximum acceptable delay to minor road left-turning traffic, an equation y=-0.57x+1091 has been developed which predicts the minor road left-turn volume threshold(y)above which a minor road left-turn lane may be considered and below which a minor road left-turn lane may not be necessary for a range of major road volumes(x). The critical delay to major road left-turning traffic was found to be 16 s/veh. Major road left-turn lane volume warrants were also determined based on this threshold delay value. The approach used in this study can serve as a guide that can be used by metropolitan and municipal road engineers to assess the need for left-turn lanes. | Eric Nyame-Baafi Charles Anum Adams Kwame Kwakwa Osei | 2018 | Journal of Traffic and Transportation Engineering(English Edition)2018，5，5： | 5 |
| 4 | 丹皮酚调控Nrf2/HO-1信号抑制小鼠乳腺癌生长的研究显示文摘目的探讨丹皮酚通过调控Nrf2/HO-1信号抑制乳腺癌生长的作用。方法建立小鼠乳腺癌模型,分成4组:模型组、阳性对照组和丹皮酚低、高剂量组(Pae L、Pae H组)。分光光度法检测丙二醛(MDA)、一氧化氮(NO)、超氧化物歧化酶(SOD)及谷胱甘肽(GSH)的含量。应用免疫组化法和RT-PCR法检测Nrf2/HO-1表达。结果肿瘤组织上清液MDA、NO含量明显高于正常组,SOD、GSH低于正常组。CTX组上述指标与模型组相比无显著性差异,Pae组与模型组相比MDA、NO含量明显降低,SOD、GSH升高,以Pae H组差异更加明显,差异具有统计学意义(P<0.05)。RT-PCR与免疫组织化学检测显示,经CTX和Pae处理后,Nrf2与HO-1m RNA与蛋白表达减弱(P<0.05)。结论丹皮酚通过调控Nrf2、HO-1表达,进而在一定程度上纠正了自由基代谢的紊乱,发挥抗肿瘤作用。 | 逄德志 Roland Osei Saahene 王茉琳 王建杰 王怡璇 徐霄航 毛旭影 欧明坤 | 2018 | 解剖学研究2018，40，2： | 4 |
| 5 | Impact of chlorine exposure time on disinfection byproduct formation in the presence of iopamidol and natural organic matter during chloramination显示文摘Chloramines,in practice,are formed onsite by adding ammonia to chlorinated drinking water to achieve the required disinfection.While regulated disinfection byproducts(DBPs)are reduced during chloramine disinfection,other DBPs such as iodinated(iodo-)DBPs,that elicit greater toxicity are formed.The objective of this study was to investigate the impact of prechlorination time on the formation of both halogen-specific total organic halogen(TOX)and iodo/chlorinated(chloro-)DBPs during prechlorination/chloramination in source waters(SWs)containing iopamidol,an X-ray contrast medium.Barberton SW(BSW)and Cleveland SW(CSW)containing iopamidol were prechlorinated for 5–60 min and afterwards chloraminated for 72 hr with ammonium chloride.Chlorine contact time(CCT)did not significantly impact total organic iodine(TOI)concentrations after prechlorination or chloramination.Concentrations of total organic chlorine(TOCl)formed during prechlorination did not significantly change regardless of pH and prechlorination time,whileTOClappearedtodecreaseafter 72 hrchloraminationperiod.Dichloroiodomethane(CHCl_2I)formation during prechlorination did not exhibit any significant trends as a function of p H or CCT,but after chloramination,significant increases were observed at pHs 6.5 and 7.5 with respect to CCT.Iodo-HAAs were not formed during prechlorination but were detected after chloramination.Significant quantities of chloroform(CHCl_3)and trichloroacetic acid(TCAA)were formed during prechlorination but formation ceased upon ammonia addition.Therefore,prechlorination studies should measure TOX and DBP concentrations prior to ammonia addition to obtain data regarding the initial conditions. | Nana Osei B.Ackerson Alexis H.Killinger Hannah K.Liberatore Thomas A.Ternes Michael J.Plewa Susan D.Richardson Stephen E.Duirk | 2019 | Journal of Environmental Sciences2019，31，4： | 4 |
| 6 | Research on water ice content in Cabeus crater using the data from the microwave radiometer onboard Chang’e-1 satellite显示文摘The existence, formation and content of water ice in the lunar permanently shaded region is one of the important questions for the current Moon study. On October 9, 2009, the LCROSS mission spacecraft impacted the Moon, and the initial result verified the existence of water on the Moon. But the study on formation and content of water ice is still under debate. The existence of water ice can change the dielectric constants of the lunar regolith, and a microwave radiometer is most sensitive to the dielectric parameters. Based on this, in this paper, the radiation transfer model is improved according to the simulation results in high frequency. Then the mixture dielectric constant models, including Odelevsky model, Wagner and landau-Lifshitz model, Clau-sius model, Gruggeman-Hanai model, etc., are analyzed and compared. The analyzing results indicate that the biggest difference occurs between Lichtenecker model and the improved Dobson model. The values estimated by refractive model are the second biggest in all the models. And the results from Odelevsky model, strong fluctuation model, Wagner and Landau –Lifshitz model, Clausius model and Bruggeman-Hanai model are very near to each other. Thereafter, the relation between volume water ice content and microwave brightness temperature is constructed with Odelevsky mixing dielectric model and the improved radiative transfer simulation, and the volume water ice content in Cabeus crater is retrieved with the data from microwave radiometer onboard Chang’e-1 satellite. The results present that the improved radiative transfer model is proper for the brightness temperature simulation of the one infinite regolith layer in high frequency. The brightness temperature in Cabeus crater is 69.93 K (37 GHz), and the corresponding volume water ice content is about 2.8%. | MENG ZhiGuo 1 , CHEN ShengBo 1* , Edward Matthew OSEI Jnr 2 , WANG ZiJun 1 & CUI TengFei 1 1 College of Geoexploration Science and Technology, Jilin University, Changchun 130026, China 2 Department of Geomatic Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，12： | 4 |
| 7 | Influence of Temperature and Frequency on Microwave Dielectric Properties of Lunar Regolith Simulant显示文摘The dielectric constant of the lunar regolith can directly influence the reflection coefficient and the trans-mission coefficient of the Moon′s surface, and plays an important role in the Moon research. In order to study the di-electric properties of the lunar regolith, the lunar regolith simulant was made according to the making procedure of the CAS-1 simulant made by Chinese Academy of Sciences. Then the dielectric constants of the lunar regolith simulant were measured with 85070E Aiglent Microwave Network Analyzer in the frequency ranging from 0.2 GHz to 20.0 GHz and at temperature of 25.1℃, 17.7℃, 13.1℃, 11.5℃, 9.6℃, 8.0℃, 4.1℃, -0.3℃, -4.7℃, -9.5℃, -18.7℃, -27.7℃, and -32.6℃, respectively. The Odelevsky model was employed to remove the influence of water in the air on the final effective dielectric constants. The results indicate that frequency and temperature have apparent influences on the dielectric constants of the lunar regolith simulant. The real parts of the dielectric constants increase fast over the range of 0.2 GHz to 3.0 GHz, but decrease slowly over the range of 4.0 GHz to 20.0 GHz. The opposite phenomenon occurs in the imaginary parts. The influences of the frequency and temperature on the brightness temperature were also estimated based on the radiative transfer equation. The result shows that the variation of the frequency and temperature results in great changes of the microwave brightness temperature emitting from the lunar regolith. | MENG Zhiguo CHEN Shengbo DU Xiaojuan EDWARD Matthew Osei Jnr LU Peng WANG Zijun | 2011 | Chinese Geographical Science2011，21，1： | 3 |
| 8 | Signalization options to improve capacity and delay at roundabouts through microsimulation approach:A case study on arterial roadways in Ghana显示文摘Roundabouts are very useful when flows are balanced but can have operational challenges when flows increase.Most roundabouts on arterial roadways in Ghana experience recurring congestion during peak traffic.The four roundabouts between Ejisu Municipality and Asokwa Municipality on the N6 highway are typical of the situation found on arterials countrywide.They experience recurring long queues and delays during the peak hours and over-representation of truck rollover accidents.In Ghana,historically,most roundabouts with capacity problems have been developed into interchanges at very high cost without consideration of other effective at-grade configurations.When roundabouts are signalized,various configurations can be explored to enhance capacity while preserving the safety benefits.Using simulation techniques,various configurations and design options were tested for their effectiveness at two of the roundabouts,located at KNUST police station and Ejisu,with similar demand and high left turning volumes.The objectives of this study were to a)evaluate the performance of the selected roundabouts on the corridor;b)explore alternative intersection configurations to improve capacity and delay.Using video data collection techniques,2-h time stamped footages of AM and PM peak traffic flows were captured for two days.Geometric design parameters of the existing roundabouts,queue lengths,travel times,and approach flows were also captured.VISSIM models of the selected roundabouts were developed and calibrated for the baseline conditions.Signalized unconventional roundabout configuration,with a phase for major road through traffic were simulated and assessed for capacity,delay and queue length.The results showed that signalized roundabout intersections effectively increased capacity by as much as 50%in some cases,reduced delay and queue length significantly,and maintained the benefits of roundabouts including safety.The performance could be further enhanced by introducing separate left turn phases to reduce conflicts or through a right turn U-turn(RTUT)concept. | Kwame Kwakwa Osei Charles Anum Adams Williams Ackaah Yolanda Oliver-Commey | 2021 | Journal of Traffic and Transportation Engineering(English Edition)2021，8，1： | 3 |
| 9 | Design of(GO/TiO2)N one-dimensional photonic crystal photocatalysts with improved photocatalytic activity for tetracycline degradation显示文摘(GO/TiO2)N(GO represents graphene oxide,and N represents the period number of alternate superposition of two dielectrics)onedimensional photonic crystal with different lattice constants was prepared via the sol–gel technique,and its transmission characteristics for photocatalysis were tested.The results show that the lattice constant,filling ratio,number of periodic layers,and incident angle had effects on the band gap.When the lattice constant,filling ratio,number of periodic layers,and incident angle were set to 125 nm,0.45,21,and 0°,respectively,a gap width of 53 nm appeared at the central wavelength(322 nm).The absorption peak of the photocatalyst at 357 nm overlapped the blue edge of the photonic band gap.A slow photon effect region above 96%reflectivity appeared.The degradation rate of tetracycline in(GO/TiO2)N photonic crystal was enhanced to 64%within 60 min.Meanwhile,the degradation efficiency of(GO/TiO2)N one-dimensional photonic crystal was effectively improved compared with those of the GO/TiO2 composite film and GO/TiO2 powder. | Huan-huan Wang Wen-xiu Liu Jing Ma Qian Liang Wen Qin Patrick Osei Lartey Xiao-jiang Feng | 2020 | International Journal of Minerals,Metallurgy and Materials2020，27，6： | 3 |
| 10 | 支气管哮喘相关苹果iOS系统手机应用的分析显示文摘目的:对苹果官方应用商店手机支气管哮喘相关应用的有用性、科学性等进行分析,为应用开发者与使用者提供参考。方法:用'Asthma'作为关键词在苹果官方应用商店搜索相关应用,每个应用均让呼吸内科专业医师进行详细评估,评估基于应用内容、相关医学指南、医学专业知识与进展等。结果:免费应用比付费应用更有用(P<0.05);医疗机构发布的应用比非医疗机构发布的应用更有用(P<0.05),科学性更强(P<0.05);针对医师的应用在科学性方面高于针对患者的应用(P<0.05)。结论:医疗机构开发、目标用户为医师、免费的应用在有用性、科学性方面,高于非医疗机构开发的、目标用户为患者的、付费的应用。 | 卢瑶 薛必成 高志宏 王华晓 李玉苹 陈彦凡 谢于鹏 Stephen Osei Ampong | 2013 | 温州医学院学报2013，43，10： | 3 |
| 11 | Facile synthesis of porous Pd nanoflowers with excellent catalytic activity towards CO oxidation显示文摘Microorganism-mediated,hexadecyltrimethylammonium chloride(CTAC)-directed(MCD) method was employed in this work to synthesize Pd nanoflowers(PdNFs).Proper Pichia pastoris cells(PPCs) dosage,ascorbic acid(AA),Pd(NO_3)_2 and CTAC concentrations were essential for the growth of the PdNFs.The size of the assynthesized PdNFs could be tuned by adjusting the amount of Pd(NO_3)_2 solution and dosage of PPCs used.Characterization techniques such as X-ray diffraction,transmission electron microscopy,and X-ray photoelectron spectroscopy were used to verify the nature of the PdNFs.Finally the PdNF/PPC nanocomposites were immobilized onto TiO_2 supports to obtain bio-PdNF/TiO_2 catalysts which showed excellent catalytic activity for CO oxidation,obtaining 100%conversion at 100℃ and remaining stable over a period of 52 h of reaction time. | Tareque Odoom-Wubah Mingming Du Williams Brown Osei Daohua Sun Jiale Huang Qingbiao Li | 2015 | Chinese Journal of Chemical Engineering2015，23，11： | 2 |
| 12 | 移动医疗与支气管哮喘的管理显示文摘随着全球智能手机和新型创新连接设备使用率的逐渐提高,以及移动宽带网络与服务的拓展,移动技术正成为医疗保健服务行业的主要推动力。普华永道市场分析报告预测,至2017年,全球移动医疗市场的发展将带来230亿美元的收入,其中亚太地区大约68亿美元,而中国大约25亿美元[1]。 | 薛必成 王华晓 李玉苹 Stephen Osei Ampong | 2014 | 中华结核和呼吸杂志2014，37，1： | 2 |
| 13 | Proinsulin maturation disorder is a contributor to the defect of subsequent conversion to insulin in~-cells显示文摘 | Wang J Osei K | 2011 | Biochem Biophys Res Commun2011，411，1： | 1 |
| 14 | Effect of melatonin on growth and metabolism of chickens显示文摘 | Osei P Robbins K R Shirley H V | 1989 | Nutrition Re- search1989，，9： | 1 |
| 15 | Environmental benefits and economic costs of manure incorporation on dairy waste application fields显示文摘 | Osei E Gassman P W Hauck L M | 2003 | Journal of Environmental Management2003，68，： | 1 |
| 16 | Economic costs and environmental benefits of manure incorporation on dairy waste application fields显示文摘 | Osei E Gassman P W Hanck L M | 2003 | Journal of Environmental Management2003，68，1： | 1 |
| 17 | Coronary artery disease risk in Chinese type 2 diabetics : isthere a role for paraxonase I gene (Q192R) polymorphism? 显示文摘 | Osei - Hyiaman D Hou L Mengbai F | 2001 | Eur J Endocrinol2001，144，6： | 1 |
| 18 | Long-term safety of pioglitazone versus glyburide in patients with recently diagnosed type 2 diabetes mellitus 显示文摘 | Jain R Osei K Kupfer S | 2006 | Pharmacotherapy2006，26，10： | 1 |
| 19 | Managing risks in information systems outsoureing: An approach to analyzing out-sourcing risks and strueturing incentive contracts显示文摘 | Kweku - Muata Osei - Bryson Ojelanki K Ngwenyama | 2006 | European Journal of Operational Research2006，174，1： | 1 |
| 20 | Nutritional status of primary schoolchildren in Garhwali Himalayan villages of India显示文摘 | Osei A Houser R Bulusu S | 2010 | Food Nutr Bull2010，31，2： | 1 |
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