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宽带隙钙钛矿太阳能电池预旋涂工艺研究

现代化工 2024年第S2期44卷 228-233页

作者：谭理李海进西南石油大学新能源与材料学院四川成都610500

宽带隙钙钛矿太阳能电池是晶硅-钙钛矿叠层电池的主要组成部分。由于宽带隙钙钛矿材料存在缺陷密度大、相分离严重等问题,限制了宽带隙钙钛矿太阳能电池的发展。为改善这些问题,提出了一种预旋涂方法,即两步法制备钙钛矿薄膜,在碘化铅... 详细信息

宽带隙钙钛矿太阳能电池是晶硅-钙钛矿叠层电池的主要组成部分。由于宽带隙钙钛矿材料存在缺陷密度大、相分离严重等问题,限制了宽带隙钙钛矿太阳能电池的发展。为改善这些问题,提出了一种预旋涂方法,即两步法制备钙钛矿薄膜,在碘化铅层表面均匀涂覆甲胺乙醇溶液(MES)+苯乙基碘化铵(PEAI)完成预旋涂工艺。通过预旋涂后,器件最佳效率为20.81%,优于未预旋涂器件(19.7%)及单一PEAI预旋涂处理器件(20.2%),同时也表现出优良的稳定性。

关键词：钙钛矿太阳能电池宽带隙预旋涂甲胺乙醇溶液缺陷钝化

CD123表达的儿童急性淋巴细胞白血病的临床特征及预后分析

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中国当代儿科杂志 2024年第7期26卷 708-715页

作者：朱可夫李海金乔川芙王柳方吴佩静陈颖田新昆明市儿童医院/昆明医科大学附属儿童医院血液肿瘤科云南昆明650228

目的研究儿童急性淋巴细胞白血病(acute lymphoblastic leukemia,ALL)中CD123的表达情况及其对急性B淋巴细胞白血病(B-ALL)患儿临床特征及预后的影响。方法回顾性分析2019年12月—2022年6月昆明医科大学附属儿童医院血液肿瘤科收治的251... 详细信息

目的研究儿童急性淋巴细胞白血病(acute lymphoblastic leukemia,ALL)中CD123的表达情况及其对急性B淋巴细胞白血病(B-ALL)患儿临床特征及预后的影响。方法回顾性分析2019年12月—2022年6月昆明医科大学附属儿童医院血液肿瘤科收治的251例ALL患儿的临床资料。根据初诊CD123表达情况,分为CD123^(+)组与CD123^(-)组,比较两组的临床特征及疗效,并分析影响预后的因素。结果251例ALL患儿中,CD123^(+)146例(58.2%),B-ALL患儿CD123阳性表达率高于急性T淋巴细胞白血病患儿(P10岁组,1~10岁组B-ALL患儿总生存率更高(P<0.05);相较于高危组,中危组B-ALL患儿无事件生存率更高(P<0.05)。结论CD123在B-ALL患儿中广泛表达,CD123阳性表达可能为儿童B-ALL预后良好的指标,对评估B-ALL患儿诱导缓解治疗及生存预后具有重要意义。

关键词：急性淋巴细胞白血病白血病干细胞 CD123 预后儿童

Role based access control design using Triadic concept analysis

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Journal of Central South University 2016年第12期23卷 3183-3191页

作者： Ch.Aswani Kumar S.Chandra Mouliswaran li jin-hai C.Chandrasekar School of Information Technology & Engineering VIT University Faculty of Science Kunming University of Science and Technology Department of Computer Science Periyar University

Role based access control is one of the widely used access control *** are investigations in the literature that use knowledge representation mechanisms such as formal concept analysis(FCA),description logics,and Ontology for representing access control ***,while using FCA,investigations reported in the literature so far work on the logic that transforms the three dimensional access control matrix into dyadic formal *** transformation is mainly to derive the formal concepts,lattice structure and implications to represent role hierarchy and constraints of *** this work,we propose a methodology that models RBAC using triadic FCA without transforming the triadic access control matrix into dyadic formal *** discussion is on two lines of *** present how triadic FCA can provide a suitable representation of RBAC policy and we demonstrate how this representation follows role hierarchy and constraints of RBAC on sample healthcare network available in the literature.

关键词： access control concept lattice role based access control role hierarchy triadic context triadic concept analysis

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三螺旋模型下高校职业发展教育体系构建研究

哈尔滨学院学报 2024年第2期45卷 120-124页

作者：贺园亚鲁学军李金海泰州学院江苏泰州225300 南京晓庄学院江苏南京211122

做好高校职业发展教育有助于缓解高校毕业生就业问题。当前高校职业发展教育存在就业价值观的引导成效不够显著,就业能力的提升效果不够明显的困境。产生困境的原因在于顶层设计不够完善,系统育人体系尚未形成;资源整合不够有效,协同育... 详细信息

做好高校职业发展教育有助于缓解高校毕业生就业问题。当前高校职业发展教育存在就业价值观的引导成效不够显著,就业能力的提升效果不够明显的困境。产生困境的原因在于顶层设计不够完善,系统育人体系尚未形成;资源整合不够有效,协同育人机制流于形式。而三螺旋模型是高校、企业和政府协同的创新模型,对于职业发展教育体系的构建具有适配性。三螺旋模型下高校职业发展教育体系框架包含一个共识目标、两个核心任务、三个协同主体、四个分支体系,其建构的逻辑进路是努力实现目标协同、规范建立约束制度、创新构建协调机制、充分利用共享资源。

关键词：三螺旋模型高校职业发展教育体系协同育人

Paraffin–CaCl_(2)·6H_(2)O dosage effects on the strength and heat transfer characteristics of cemented tailings backfill

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International Journal of Minerals,Metallurgy and Materials 2024年第1期31卷 60-70页

作者： hai li Aibing jin Shuaijun Chen Yiqing Zhao You Ju Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mine University of Science and Technology BeijingBeijing 100083China School of Civil and Resources Engineering University of Science and Technology BeijingBeijing 100083China

The challenge of high temperatures in deep mining remains harmful to the health of workers and their production efficiency The addition of phase change materials (PCMs) to filling slurry and the use of the cold storage function of these materials to reduce downhole temperatures is an effective approach to alleviate the aforementioned ***–CaCl_(2)·6H_(2)O composite PCM was prepared in the *** composition,phase change latent heat,thermal conductivity,and cemented tailing backfill (CTB) compressive strength of the new material were *** heat transfer characteristics and endothermic effect of the PCM were simulated using Fluent *** results showed the following:(1) The new paraffin–CaCl_(2)·6H_(2)O composite PCM improved the thermal conductivity of native paraffin while avoiding the water solubility of CaCl_(2)·6H_(2)O.(2) The calculation formula of the thermal conductivity of CaCl_(2)·6H_(2)O combined with paraffin was deduced,and the reasons were explained in principle.(3) The“enthalpy–mass scale model”was applied to calculate the phase change latent heat of nonreactive composite PCMs.(4)The addition of the paraffin–CaCl_(2)·6H_(2)O composite PCM reduced the CTB strength but increased its heat absorption *** research can give a theoretical foundation for the use of heat storage backfill in green mines.

关键词： paraffin–CaCl_(2)·6H_(2)O heat transfer simulation heat calculation phase change material-based backfill latent heat of formula

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夏冬两季发酵雪茄烟叶的代谢组差异分析

生物技术通报 2024年第6期40卷 260-270页

作者：虞昕磊何结望林国平李金海王大爱袁跃斌刘圣高李志豪陶德欣湖北省烟草公司宜昌市公司宜昌443000 湖北中烟工业有限责任公司武汉430040 湖北省烟草公司武汉430040

【目的】解析夏冬季节发酵的雪茄烟叶代谢物差异。【方法】采用超高效液相色谱串联质谱(UPLC-MS/MS)技术对发酵前、冬季发酵、夏季发酵的雪茄烟叶样品进行广泛靶向代谢物检测。【结果】发酵期间(历时34 d)夏季、冬季发酵房平均温度分别... 详细信息

【目的】解析夏冬季节发酵的雪茄烟叶代谢物差异。【方法】采用超高效液相色谱串联质谱(UPLC-MS/MS)技术对发酵前、冬季发酵、夏季发酵的雪茄烟叶样品进行广泛靶向代谢物检测。【结果】发酵期间(历时34 d)夏季、冬季发酵房平均温度分别是27.2℃、14.7℃,二者相差12.5℃,平均湿度分别是77.6%、66.7%,二者相差10.9%,夏季更符合烟叶发酵相对高温、高湿的环境要求;雪茄烟叶样品检测得到905种代谢物包含10类:生物碱、酚酸、黄酮、脂质、氨基酸、有机酸、萜类、糖类、核苷酸、木质素,其中生物碱、有机酸、脂质含量比例居前三,分别是24.5%、23.7%、15.0%。烟叶发酵后,有机酸、脂质、氨基酸、酚酸的含量都显著提升,生物碱、萜类、黄酮、糖类、木质素的含量有不同程度的减少。夏季发酵的烟叶生物碱、萜类代谢转化更剧烈,有机酸、氨基酸、黄酮、脂质、糖类含量较高,化学成分更协调,香气质量更丰富,烟气柔顺、余味甜润,感官品质更优。【结论】鄂西南地区夏季自然高温高湿环境,更顺应雪茄烟农业发酵理想状态,将当年生产的雪茄烟叶在冬季自然醇化后推迟到次年夏季发酵,或可作为探索推动雪茄烟发酵工序提质增效的参考方案。

关键词：雪茄烟叶发酵代谢组学感官质量差异分析

Media Power Measuring via Emotional Contagion

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Journal of Social Computing 2024年第1期5卷 15-35页

作者： Xue lin Hong Huang Zongya li hai jin National Engineering Research Center for Big Data Technology and System Services Computing Technology and System LabCluster and Grid Computing LabSchool of Computer Science and TechnologyHuazhong University of Science and TechnologyWuhan 430074China School of Journalism Huazhong University of Science and TechnologyWuhan 430074China

Media power,the impact that media have on public opinion and perspectives,plays a significant role in maintaining internal stability,exerting external influence,and shaping international dynamics for nations/***,prior research has primarily concentrated on news content and reporting time,resulting in limitations in evaluating media *** more accurately assess media power,we use news content,news reporting time,and news emotion simultaneously to explore the emotional contagion between *** use emotional contagion to measure the mutual influence between media and regard the media with greater impact as having stronger media *** propose a framework called Measuring Media Power via Emotional Contagion(MMPEC)to capture emotional contagion among media,enabling a more accurate assessment of media power at the media and national/regional *** also interprets experimental results through correlation and causality analyses,ensuring *** analyses confirm the higher accuracy of MMPEC compared to other baseline models,as demonstrated in the context of COVID-19-related news,yielding compelling and interesting insights.

关键词： explainability media power emotional contagion

A survey on dynamic graph processing on GPUs: concepts, terminologies and systems

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Frontiers of Computer Science 2024年第4期18卷 1-23页

作者： Hongru GAO Xiaofei liAO Zhiyuan SHAO Kexin li Jiajie CHEN hai jin National Engineering Research Center for Big Data Technology and System/Services Computing Technology and System Lab/Cluster and Grid Computing Lab School of Computer Science and TechnologyHuazhong University of Science and TechnologyWuhan 430074China Zhejiang Lab Hangzhou 311121China

Graphs that are used to model real-world entities with vertices and relationships among entities with edges,have proven to be a powerful tool for describing real-world problems in *** most real-world scenarios,entities and their relationships are subject to constant *** that record such changes are called dynamic *** recent years,the widespread application scenarios of dynamic graphs have stimulated extensive research on dynamic graph processing systems that continuously ingest graph updates and produce up-to-date graph analytics *** the scale of dynamic graphs becomes larger,higher performance requirements are demanded to dynamic graph processing *** the massive parallel processing power and high memory bandwidth,GPUs become mainstream vehicles to accelerate dynamic graph processing ***-based dynamic graph processing systems mainly address two challenges:maintaining the graph data when updates occur(i.e.,graph updating)and producing analytics results in time(i.e.,graph computing).In this paper,we survey GPU-based dynamic graph processing systems and review their methods on addressing both graph updating and graph *** comprehensively discuss existing dynamic graph processing systems on GPUs,we first introduce the terminologies of dynamic graph processing and then develop a taxonomy to describe the methods employed for graph updating and graph *** addition,we discuss the challenges and future research directions of dynamic graph processing on GPUs.

关键词： dynamic graphs graph processing graph algorithms GPUs

Bi-Frobenius Algebra Structures on Quantum Complete Intersections

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Acta Mathematica Sinica,English Series 2024年第6期40卷 1481-1504页

作者： hai jin Pu ZHANG School of Mathematical Sciences Shanghai Jiao Tong UniversityShanghai 200240P.R.China

This paper is to look for bi-Frobenius algebra structures on quantum complete intersections over field *** find a class of comultiplications,such that if√−1∈k,then a quantum complete intersection becomes a bi-Frobenius algebra with comultiplication of this form if and only if all the parameters qij=±***,it is proved that if√−1∈k then a quantum exterior algebra in two variables admits a bi-Frobenius algebra structure if and only if the parameter q=±√*** if−1/∈k,then the exterior algebra with two variables admits no bi-Frobenius algebra *** prove that the quantum complete intersections admit a bialgebra structure if and only if it admits a Hopf algebra structure,if and only if it is commutative,the characteristic of k is a prime p,and every ai a power of *** also provides a large class of examples of bi-Frobenius algebras which are not bialgebras(and hence not Hopf algebras).In commutative case,other two comultiplications on complete intersection rings are given,such that they admit non-isomorphic bi-Frobenius algebra structures.

关键词： Bi-Frobenius algebras coalgebras bialgebras Hopf algebras quantum complete intersections quantum exterior algebras