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BOUNDEDNESS OF STEIN'S SQUARE FUNCTIONS ASSOCIATED TO OPERATORS ON HARDY SPACES

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Acta Mathematica Scientia 2014年第3期34卷 891-904页

作者：闫雪芳 Department of Mathematics Sun Yat-sen (Zhongshan) University College of Mathematics and Information Science Heibei Normal University

Let （X, d,μ） be a metric measure space endowed with a metric d and a nonnegative Borel doubling measure μ. Let L be a second order non-negative self-adjoint operator on L^2（X）. Assume that the semigroup e^-tL generated by L satisfies the Davies-Gaffney estimates. Also, assume that L satisfies Plancherel type estimate. Under these conditions, we show that Stein＇s square function Gδ（L） arising from Bochner-Riesz means associated to L is bounded from the Hardy spaces HL^p（X） to L^p（X） for all 0 〈 p ≤ 1.

关键词： Stein's square function non-negative self-adjoint operator Hardy spaces Davies- Gaffney estimate Plancherel type estimate

Diagenesis and Their Succession of Gas-bearing and Non-gas-bearing Reservoirs in the Sulige Gas Field of Ordos Basin,China

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Acta Geologica Sinica(English Edition) 2009年第6期83卷 1202-1213页

作者： ZHU Xiaomin LIU Chenlin ZHONG Dakang HAN xuefang State Key Laboratory of Petroleum Resource and Prospecting China University of Petroleum Beijing 102249 China

Comparisons have been made among lithology, diagenesis, and reservoir characteristics of gas-bearing and non-gas-bearing ones in the Sulige gas field of the Ordos Basin based on the laboratory analysis of thin sections, scanning electron microscope, and liquid inclusion of the reservoirs. The reservoirs of the Sulige gas field are now in the middle stage of diagenesis and have undergone compaction, cementation and dissolution. The secondary pore of the reservoir originated from the dissolution of the feldspar and tuff because of the organic acid action from the source rocks during the diagenetic middle stage. Gas-bearing reservoirs are common in soluble pore diagenetic facies of coarse detritus quartzose sandstone, whereas non-gas-bearing ones are common in tense compaction diagenetic facies of mud-bearing medium-fine detritus quartzose sandstone and residual intergranular pore diagenetic facies of mud-bearing medium-coarse detritus quartzose sandstone. The secondary pore is developed in gas-bearing reservoirs of the Sulige gas-field as the medium-coarse grain reservoirs formed in a powerful sedimentary environment and experienced strong dissolution. However, the sediments of fine grain size form the non-gas-bearing reservoirs because of less residual primary pore and secondary pore.

关键词： pore evolution diagenesis reservoir Sulige gas field Ordos basin

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前降钙素对新生儿重症感染的诊断价值

首都医科大学学报 2005年第5期26卷 545-548页

作者：何建平申昆玲林影吴明昌王咏红杨学芳王亚娟邵芳首都医科大学附属北京儿童医院内科首都医科大学北京儿科研究所微生物免疫室

目的评价前降钙素(procalcitonin,PCT)对新生儿重症细菌感染的诊断价值.方法应用免疫发光法对30例重症感染新生儿和30例非感染对照组病人在入院时进行血清PCT的定量检测,并与C反应蛋白(CRP)和白细胞计数(WBC)进行比较.同时检测其敏感度... 详细信息

目的评价前降钙素(procalcitonin,PCT)对新生儿重症细菌感染的诊断价值.方法应用免疫发光法对30例重症感染新生儿和30例非感染对照组病人在入院时进行血清PCT的定量检测,并与C反应蛋白(CRP)和白细胞计数(WBC)进行比较.同时检测其敏感度、特异性、预计值和ROC曲线下面积(AUC).结果重症细菌感染病人在入院时血PCT质量浓度明显增高(中位数7.82 μg/L,范围0.97～256.81 μg/L),而非感染对照组为0.16 μg/L(0.10～1.49 μg/L).PCT、CRP和WBC的ROC曲线下面积分别为0.99、0.62和0.60.预计重症感染的最佳截断值为:PCT＞2 μg/L(敏感度87%、特异性和阳性预计值100%、阴性预计值88%);CRP＞20 mg/L、PCT＞0.9 μg/L时,敏感度和阴性预计值为100%,可以确诊所有重症细菌感染病人.结论重症感染新生儿入院时的PCT血质量浓度是优于CRP和WBC的细菌感染诊断指标.

关键词：前降钙素败血症脑膜炎新生儿

Framework, model and algorithm for the global control of urban automated driving traffic

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FRONTIERS OF ENGINEERING MANAGEMENT 2024年第4期11卷 592-619页

作者： Li, Kunpeng Han, xuefang Jin, Xianfei Huazhong Univ Sci & Technol Sch Management Wuhan 430074 Peoples R China Sabre Inc Southlake TX 76092 USA

Automated driving has recently attracted significant attention. While considerable research has been conducted on the technologies and societal acceptance of autonomous vehicles, investigations into the control and scheduling of urban automated driving traffic are still nascent. As automated driving gains traction, urban traffic control logic is poised for substantial transformation. Presently, both manual and automated driving predominantly operate under a local decision-making traffic mode, where driving decisions are based on the vehicle's status and immediate environment. This mode, however, does not fully exploit the potential benefits of automated driving, particularly in optimizing road network resources and traffic efficiency. In response to the increasing adoption of automated driving, it is essential for traffic bureaus to initiate proactive dialogs regarding urban traffic control from a global perspective. This paper introduces a novel global control mode for urban automated driving traffic. Its core concept involves the central scheduling of all autonomous vehicles within the road network through vehicle-infrastructure cooperation, thereby optimizing traffic flow. This paper elucidates the mechanism and process of the global control mode. Given the operational complexity of expansive road networks, the paper suggests segmenting these networks into multiple manageable regions. This mode is conceptualized as an autonomous vehicle global scheduling problem, for which a mathematical model is formulated and a modified A-star algorithm is developed. The experimental findings reveal that (i) the algorithm consistently delivers high-quality solutions promptly and (ii) the global scheduling mode significantly reduces traffic congestion and equitably distributes resources. In conclusion, this paper presents a viable and efficacious new control mode that could substantially enhance urban automated traffic efficiency.

关键词： automated driving urban traffic control global scheduling mode autonomous vehicle route planning A-star algorithm

Largest Toothed Pterosaur Skull from the Early Cretaceous Yixian Formation of Western Liaoning, China, with Comments on the Family Boreopteridae

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Acta Geologica Sinica(English Edition) 2012年第2期86卷 287-293页

作者： LU Junchang PU Hanyong XU Li WU Yanhua WEI xuefang Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China Henan Geological Museum Zhengzhou 450016Henan ProvinceChina

A new pterosaur Moganopterus zhuiana gen. et sp. nov. is erected based on a complete skull with lower jaws and anterior cervical vertebrae. It is characterized by much elongated upper and lower jaws with at least 62 total, long, curved teeth with sharp tips, a well developed parietal crest extending posterodorsally, forming an angle of 15 degrees with the ventral margin of the skull, the ratio of length to width of cervical vertebrae greater than 5：1. The skull length is 750 mm, and it is the largest toothed pterosaur found so far in the world. Based on this new pterosaur, the Boreopteridae can be divided into two subgroups： Boreopterinae sub-fam, nov. and Moganopterinae sub-fam, nov., which is also confirmed by the phylogenetic analysis.

关键词： Moganopterus Boreopteridae Yixian Formation western Liaoning

调中化湿汤对胃癌根治术后患者免疫功能及生活质量的影响

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临床医学研究与实践 2024年第15期9卷 113-116页

作者：李琳婵杨学芳谢燕华鱼麦侠许鹏蒋传森郝梅梅缑娇陕西省中医医院肿瘤科陕西西安710000 甘肃省兰州市第二人民医院感染科甘肃兰州730000 柞水县中医医院外科陕西商洛711400

目的探究调中化湿汤对胃癌根治术后患者免疫功能及生活质量的影响。方法选取100例行胃癌根治术的患者为研究对象,按照随机数字表法将其分为对照组和治疗组,各50例。对照组给予常规西医治疗,治疗组在常规西医治疗基础上给予调中化湿汤... 详细信息

目的探究调中化湿汤对胃癌根治术后患者免疫功能及生活质量的影响。方法选取100例行胃癌根治术的患者为研究对象,按照随机数字表法将其分为对照组和治疗组,各50例。对照组给予常规西医治疗,治疗组在常规西医治疗基础上给予调中化湿汤治疗。比较两组的治疗效果。结果治疗后,两组的中医证候积分均降低,卡诺夫斯基健康状况量表(KPS)评分均升高,且治疗组优于对照组(P<0.05)。治疗后,两组的Piper疲乏量表(PFS)各维度评分均低于治疗前,且治疗组低于对照组(P<0.05)。治疗后,两组的生命质量测定量表(FACT-G)各维度评分均高于治疗前,且治疗组高于对照组(P<0.05)。治疗后,两组的CD3^(+)、CD4^(+)、及CD4^(+)/CD8^(+)均升高,CD8^(+)均降低,且治疗组优于对照组(P<0.05)。治疗后,两组的白细胞介素-1(IL-1)、白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)及干扰素-γ(IFN-γ)水平均低于治疗前,且治疗组低于对照组(P<0.05)。治疗组的不良反应分级明显优于对照组(P<0.05)。结论调中化湿汤可改善胃癌根治术后患者的免疫功能,提高生存质量,且安全性较好。

关键词：调中化湿汤胃癌根治术免疫功能生活质量免疫因子

Glass-compatible and self-powered temperature alarm system by temperature-responsive organic manganese halides via backward energy transfer process

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Journal of Energy Chemistry 2023年第3期78卷 188-194,I0006页

作者： Pengfei Xia Fan Liu Yuru Duan xuefang Hu Changgui Lu Shuhong Xu Chunlei Wang Advanced Photonics Center School of Electronic Science and EngineeringSoutheast UniversityNanjing 210096JiangsuChina

A pioneering glass-compatible transparent temperature alarm system self-powered by luminescent solar concentrators(LSCs) is *** green-emitted organic manganese halides(OMHs) of PEA_(2)MnBr_(2)I_(2),which has a unique temperature-dependent backward energy transfer process from selftrapped state to^(4)T_(1)energy level of Mn,is used for triggering the temperature *** LSC with redemitted CsPbI_(3)perovskite-polymer composite films on the glass substrate is used for power *** spectrally separated nature between the green-emitted OMHs for temperature alarm and red-emitted CsPbI3in LSC for power supply allows for probing the signal light of temperature-responsive OMHs without the interference of LSCs,making it possible to calibrate the temperature visually just by a self-powered brightness detection circuit with LED *** advantage of LSC without hot spot effects plaguing the solar cells,as-prepared temperature alarm system can operate well on both sunny and cloudy day.

关键词： Luminescent solar concentrators Organic manganese halides Perovskite-polymer compositeﬁlms Self-powered temperature alarm system Backward energy transfer process

A New Oviraptorid Dinosaur (Theropoda: Oviraptorosauria) from the Late Cretaceous of Jiangxi Province, Southern China

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Acta Geologica Sinica(English Edition) 2013年第4期87卷 899-904页

作者： WEI xuefang PU Hanyong XU Li LIU Di Lü Junchang Institute of Geology Chinese Academy of Geological Sciences Henan Geological Museum

A new oviraptorid dinosaur Jiangxisaurus ganzhouensis gen. et sp. nov., is erected based on a partial skeleton from the Upper Cretaceous Nanxiong Formation of Ganzhou City, Jiangxi Province. The new taxon differs from other oviraptorids in the weakly downturned rostrum of the lower jaw, much-elongated mandible with a height-to-length ratio being about 20% and the length ratio of radius to humerus of about 0.70. This species not only adds a new member to oviraptorid dinosaurs, but also provides more information about oviraptorid paleogeographical distribution in southern China.

关键词： Oviraptoridae Jiangxisaurus Nanxiong Formation Upper Cretaceous Ganzhou Basin,Jiangxi Province

Time-Domain Traveling Wave Model of Single-Section Quantum Dot Mode-Locked Lasers with Optical Feedback

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Journal of Harbin Institute of Technology(New Series) 2021年第3期28卷 45-52页

作者： xuefang Xiao Zewang Zhang Xiupu Zhang School of Opto-electronic and Communication Engineering Xiamen University of TechnologyXiamen 361024FujianChina Key Laboratory of Communication Network and Information Processing in Fujian Province Xiamen 361024FujianChina Photonics Labs. Department of Electrical and Computer EngineeringConcordia UniversityMontreal QC H3G 1M8Canada

The optical feedback modulations of a passively mode-locked semiconductor laser with quantum dot structure were investigated in this study. The delay-induced dynamics of QD MLL under the condition of optical feedback have been studied by exploiting a time domain traveling wave(TDTW) model. The conventional TDTW model was improved to make it suitable for studying optical feedback system, especially the system with long external cavity structure. Combing the TDTW model with optical feedback and carrier rate equations, the pulse variation of a single section QD MLL was studied. This new model shows good agreement with the published experimental data. The roundtrip time and local light intensity modulation to the pulse evolution of QD MLL were studied. The results show that when the time for a light to go to and return from external cavity is equal to the integral times of the period of laser pulse without external feedback, resonance will be formed, and the period of pulse sequence is the shortest. The results also show that the stronger the local light intensity modulation is, the shorter the pulse period is.

关键词： quantum dot structure passively mode-locked laser optical feedback

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