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开挖施工中基于边坡安全的爆破震动控制公式

开挖施工中基于边坡安全的爆破震动控制公式

第一届堆石坝国际研讨会

作者： kim,jae hong Park Chal Sook Kwater坝安全研究中心 Seongdeok坝施工办事处

除环境因素外,噪音和震动亦会对周围建筑造成影响。在开挖爆破施工期间,噪音和震动是施工现场的一个重要问题。事实上,穿越山区道路的边坡可能会受到因坡面、接缝或大雨所导致落石的影响,但是这样一个事实是不容忽略的,那就是过量震动... 详细信息

除环境因素外,噪音和震动亦会对周围建筑造成影响。在开挖爆破施工期间,噪音和震动是施工现场的一个重要问题。事实上,穿越山区道路的边坡可能会受到因坡面、接缝或大雨所导致落石的影响,但是这样一个事实是不容忽略的,那就是过量震动作业会导致道路掘土作业过程中所切割岩石部位的损坏。为了在大规模料场开挖之后确保边坡的稳定性。需要进行以试验爆破的爆破影响为基础作还原分析研究,以确定从最初挖掘作业开始到岩石爆破的作业过程中所产生的震动对于坡面稳定性的影响.并就爆破震动的情况进行预测。

关键词：爆破震动边坡回归分析

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面向GIS基于专有名词优先的中文分词方法

计算机应用 2010年第7期30卷 1941-1943页

作者：罗浩魏祖宽金在弘电子科技大学计算机科学与工程学院成都610054 永同大学校计算机工学科韩国永同郡370701

提出了一种面向地理信息系统领域的基于专有名词优先的中文分词方法:利用专业词典、通用词典和同义词词典相结合的词典机制,优先切分专有名词,对粗分结果利用Trigram模型进行消歧而获取最终结果。实验证明,该分词算法对专业文献的分词... 详细信息

提出了一种面向地理信息系统领域的基于专有名词优先的中文分词方法:利用专业词典、通用词典和同义词词典相结合的词典机制,优先切分专有名词,对粗分结果利用Trigram模型进行消歧而获取最终结果。实验证明,该分词算法对专业文献的分词处理具有较好速度和准确性。

关键词：中文分词专业词典 Trigram模型同义词词典

Scalable Ir-Doped NiFe₂O₄/TiO₂ Heterojunction Anode for Decentralized Saline Wastewater Treatment and H₂ Production

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NANO-MICRO LETTERS 2025年第1期17卷 1-18页

作者： hong, Sukhwa kim, Jiseon Park, jaebeom Im, Sunmi Hoffmann, Michael R. Cho, Kangwoo Pohang Univ Sci & Technol POSTECH Div Environm Sci & Engn Pohang 790784 South Korea CALTECH Linde Labs Pasadena CA 91125 USA Yonsei Univ Int Campus Inst Convergence Res & Educ Adv Technol I CREATE Incheon 21983 South Korea

Wastewater electrolysis cells (WECs) for decentralized wastewater treatment/reuse coupled with H-2 production can reduce the carbon footprint associated with transportation of water, waste, and energy carrier. This study reports Ir-doped NiFe2O4 (NFI, similar to 5 at% Ir) spinel layer with TiO2 overlayer (NFI/TiO2), as a scalable heterojunction anode for direct electrolysis of wastewater with circumneutral pH in a single-compartment cell. In dilute (0.1 M) NaCl solutions, the NFI/TiO2 marks superior activity and selectivity for chlorine evolution reaction, outperforming the benchmark IrO2. Robust operation in near-neutral pH was confirmed. Electroanalyses including operando X-ray absorption spectroscopy unveiled crucial roles of TiO2 which serves both as the primary site for Cl- chemisorption and a protective layer for NFI as an ohmic contact. Galvanostatic electrolysis of NH4+-laden synthetic wastewater demonstrated that NFI/TiO2 not only achieves quasi-stoichiometric NH4+-to-N-2 conversion, but also enhances H-2 generation efficiency with minimal competing reactions such as reduction of dissolved oxygen and reactive chlorine. The scaled-up WEC with NFI/TiO2 was demonstrated for electrolysis of toilet wastewater.

关键词： Wastewater electrolysis cell Ir-doped NiFe2O4 Reactive chlorine species Decentralized H-2 production On-site wastewater treatment

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一种面向并行空间查询的数据划分方法

计算机科学 2010年第8期37卷 198-200页

作者：贾婷魏祖宽唐曙光金在弘电子科技大学计算机科学与工程学院成都610054 四川华雁信息产业股份有限公司研发部成都610041 韩国永同大学校计算机工学科忠清北道永同郡370701

在并行空间数据库中,空间数据集在各计算节点是否聚集划分,对提高空间并行查询效率起着关键的作用。Oracle Spatial采用的基于格网的划分方法只考虑了数据集在各节点是否均衡划分,而未考虑空间数据的拓扑特征。基于空间数据聚集划分的目... 详细信息

在并行空间数据库中,空间数据集在各计算节点是否聚集划分,对提高空间并行查询效率起着关键的作用。Oracle Spatial采用的基于格网的划分方法只考虑了数据集在各节点是否均衡划分,而未考虑空间数据的拓扑特征。基于空间数据聚集划分的目的,提出了一种基于K-平均聚类算法的空间数据划分方法。实验证明,该方法极大地提高了空间数据并行检索和查询效率。

关键词： K-平均算法聚类数据划分分布式并行计算环境

基于GA的知识约简及其在电力GIS中的应用

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计算机工程与设计 2010年第16期31卷 3662-3665页

作者：魏祖宽徐敏唐曙光金在弘电子科技大学计算机科学与工程学院四川成都611731 四川华雁信息产业股份有限公司四川成都610061 韩国永同大学校计算机工学科忠清北道永同郡370701

为了快速高效地对海量GIS数据进行知识约简,分析了常见的约简算法及各自适用的范围。在此基础上,提出了基于遗传算法的约简方法,通过选取有效的适应度函数,很大程度上提高了约简的性能。引入了自适应遗传算法的思想,使适应度函数中的因... 详细信息

为了快速高效地对海量GIS数据进行知识约简,分析了常见的约简算法及各自适用的范围。在此基础上,提出了基于遗传算法的约简方法,通过选取有效的适应度函数,很大程度上提高了约简的性能。引入了自适应遗传算法的思想,使适应度函数中的因子能够随适应度的改变自动改变,从而增强了算法的全局寻优能力。通过对电力业务中属性数据的实例分析,表明了该算法在海量数据约简方面的可行性和有效性。

关键词：粗糙集属性约简 GIS 遗传算法故障诊断

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数据库访问技术比较研究

计算机与现代化 2009年第12期 46-50,54页

作者：魏祖宽江利娟金在弘电子科技大学计算机科学与工程学院四川成都610054 永同大学校计算机工学科韩国永同370701

给出了基于关系数据库访问的ODBC、DAO、RDO及基于各种数据源访问的ADO、***的数据库访问技术,通过对这两类技术进行访问机制分析和性能比较研究,结果表明:当访问关系数据库时,RDO访问速度最快,DAO次之,ODBC最慢;当访问各种数据源时,**... 详细信息

给出了基于关系数据库访问的ODBC、DAO、RDO及基于各种数据源访问的ADO、***的数据库访问技术,通过对这两类技术进行访问机制分析和性能比较研究,结果表明:当访问关系数据库时,RDO访问速度最快,DAO次之,ODBC最慢;当访问各种数据源时,***性能优于ADO,但在执行效率方面,ADO最高,***的数据提供者SQL ***次之,OLE ***最慢,为提高***执行效率,建议不同数据源宜选用合适的数据提供者;各种访问技术都有其突出的优点及适用范围。

关键词：数据访问 *** ODBC DAO RDO

Adsorption properties of polycarboxylate ether-based superplasticizer on cement particles and their resultant dispersion

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Frontiers of Structural and Civil Engineering 2022年第4期16卷 506-514页

作者： Jinyoung YOON Byoung Il CHOI jae hong kim Department of Structural Engineering Research Korea Institute of Civil Engineering and Building Technology(KICT)Goyang 10223Republic of Korea System Safety Research Department Korea Shipbuilding and Offshore EngineeringSeongnam 13591Republic of Korea Department of Civil and Environmental Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea

The cement dispersion performance of a polycarboxylate(PCE)-based superplasticizer is highly related to their adsorption behaviors as a function of *** study evaluated effects of PCEs on rheological properties of cementitious ***,characteristics of PCEs were characterized via permeation chromatography(GPC)and Fourier-transform infrared spectrometry(FT-IR).The adsorption behavior of single and blended PCEs on cementitious composites was identified using total organic carbon analyzer(TOC).Based on the measurement of PCE adsorption,the changes of rheological properties of cementitious materials as well as the number of dispersed cement particles were characterized using a rheometer and laser spectroscopy,*** experimental results support the systematic mechanism of PCE adsorption,cement dispersion,and the decrease in viscosity of cementitious materials.

关键词： adsorption polycarboxylate superplasticizer rheology dispersion

Quantum public-key crypto via EPR pairs

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 58-63页

作者： Xiang-Qun Fu hong-Wei Li Jian-hong Shi Tan Li Wan-Su Bao Henan Key Laboratory of Quantum Information and Cryptography Information Engineering University Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China

With the development of quantum computing technology, quantum public-key cryptography is gradually becoming an alternative to the existing classical public-key cryptography. This paper designs a quantum trapdoor one-way function via EPR pairs and quantum measurements. Based on this, a new quantum public-key cryptosystem is presented, which offers forward security,and can resist the chosen-plaintext attack and chosen-ciphertext attack. Compared with the existing quantum public-key cryptos,eavesdropping can be automatically detected in this new quantum public-key cryptosystem under a necessary condition, which is also detailed in the paper.

关键词： quantum public-key crypto trapdoor one-way function EPR pairs

Application of Transformed Two-Stage Network DEA to Strategic Design of Biofuel Supply Chain Network

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Journal of Systems Science and Systems Engineering 2023年第2期32卷 129-151页

作者： jae-Dong hong Industrial Engineering Program South Carolina State UniversityOrangeburgSCUSA

This paper proposes an innovative procedure for designing efficient biomass-biofuel logistics networks(BBLNs).This procedure is based on the two-stage network data envelopment analysis(TSN-DEA)models that have been developed to provide specific process guidance for the managers to improve the efficiency of the decision-making unit(DMU)with the TSN *** crucial issue of the TSN-DEA is that the overall efficiency score depends on the DMUs under ***,the rankings for the DMUs generated by the TSN-DEA model are *** a result,the TSN-DEA-based ranking methods are *** TSN-DEA’s inconsistency frequently makes it difficult for decision-makers to select the top-rated *** develop the transformed TSN(T-TSN)DEA method by applying the multi-criteria DEA model to overcome this *** proposed method transforms the DMUs with any number of inputs,intermediate measures,and outputs in the TSN process,through the multi-objective programming model with a minimax objective approach,into the DMUs with two inputs and one output in the single-stage network(SSN)***,the well-known DEA methods for the SSN,such as the cross-efficiency and super-efficiency DEA methods,can be applied to evaluate and rank the transformed DMUs more *** exhibit the applicability of the proposed approach for the BBLN design problem.A case study of South Carolina in the USA demonstrates that the proposed method performs well in identifying efficient BBLN schemes more consistently than the traditional TSN-DEA.

关键词： Biomass-biofuel logistics network two-stage network data envelopment analysis efficiency score decision-making unit multiple criteria