检索结果-内蒙古大学图书馆

Geospatial analysis of neotectonics in the Jebel Gustar Mountain,northeastern Algeria

Journal of Mountain Science 2025年第2期22卷 391-403页

作者： TAIB Hassan HADJI Riheb ZIGHMI Karim HAMED Younes GENTILUCCI Matteo BEDRI Khaoula Department of Geological Sciences Faculty of Earth SciencesGeography and Regional PlanningUniversitéFrères Mentouri-Constantine 1 BP325 Route d’Ain El Bey 25017ConstantineAlgeria Laboratory of Applied Research in Engineering Geology GeotechnicsWater Sciences and EnvironmentFerhat Abbas UniversitySetif 19137Algeria Department of Earth Sciences Institute of Architecture and Earth SciencesFerhat Abbas UniversitySetif 19137Algeria International Association of Water Resources in the Southern Mediterranean Basin Gafsa 2112Tunisia Department of Earth Sciences Faculty of Sciencesuniversity of GafsaCampus Universitaire Sidi Ahmed Zarroug–2112GafsaTunisia School of Science and Technology Geology DivisionUniversity of CamerinoVia Gentile III da Varano762032 Camerino MCItaly Mining Engineering Laboratory National Polytechnic School of Algiers10 Rue des Frères OUDEKEl Harrach 16200 AlgiersAlgeria

This research investigates dynamic earth processes within the South Setifian allochthonous ensemble,providing insights into landscape evolution and seismotectonic activity within the Tellian mountain *** on the Jebel Gustar and Kef Lahmar area,which includes 14 sub-basins,this research uses a DEM-based technique to assess Holocene activities,lineament characteristics,and stream *** geomorphic indices are used to assess relative active tectonics:the stream lengthgradient index(SL),drainage basin asymmetry(AF),valley-floor width to valley height ratio(VF),drainage basin shape(BS),and mountain front sinuosity(SMF).A weighted overlay of these five indices produces the Index of Relative Active Tectonics(IRAT)*** findings reveal significant neotectonic activity in the study area,supported by profound basement *** research highlights the morpho-structural processes and neotectonics activity in the Jebel Gustar,providing a framework for investigating the evolution of this ***,it enhances comprehension of the interactions between the alpine range's internal zones in Eastern Algeria and the Atlasic *** study proposes a systematic approach to evaluate the tectonic and geomorphological dynamics of the South Setif region.

关键词： Active tectonics Crustal deformation Holocene activities Geomorphic indices Neotectonic dynamics

来源：评论

学校读者我要写书评

暂无评论

Changes in the Nanoscale Asphaltene Particles and Relaxation Spectra of Asphalt Binders During Aging and Rejuvenation

SSRN

引用

SSRN 2022年

作者： Li, Fangjin Wang, Yuhong Miljković, Miomir Chan, Kin Ming Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Hong Kong Faculty of Civil Engineering and Architecture University of Niš Niš Serbia

Asphalt binder is a widely used engineering material. It is essentially a nanomaterial with colloidal particles suspended in an oily medium. As asphalt binder ages, the colloidal particles are subject to fundamental physicochemical changes such as agglomeration, which is translated into dramatic engineering property changes of the asphalt binder. In engineering practices, organic rejuvenators are often added to the aged asphalt binder, with the hope to breakdown the nanoparticles and restore its original engineering properties. However, how the nanoparticles evolve during the aging and rejuvenation of asphalt binder remains hypothetical. This study revealed the fundamental changes of the colloidal particles in asphalt binder during aging and rejuvenation. Moreover, changes in morphology of the colloidal particles are connected to the relaxation spectrum of the asphalt binder. As a result, practitioners do not have to rely on complicated methods and equipment to observe asphalt binders at the microscopic level. Instead, they can employ commonly used engineering tests with a dynamic shear rheometer (DSR) to decipher what occurs at the nanoscale during asphalt binder aging and rejuvenation. This would greatly assist practitioners in material selection and design. © 2022, The Authors. All rights reserved.

关键词： Asphaltenes

来源：评论

学校读者我要写书评

暂无评论

基于图像的深度学习降雨强度估计方法

引用

engineering 2023年第2期21卷 162-174,M0007页

作者：尹航郑飞飞段焕丰 Dragan Savic Zoran Kapelan College of Civil Engineering and Architecture Zhejiang UniversityHangzhou 310003China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong Kong 999077China KWR Water Research Institute Nieuwegein 3430 BBThe Netherlands Centre for Water Systems University of ExeterExeter EX44QFUK Faculty of Engineering and Built Environment Universiti Kebangsaan MalaysiaBangi 43600Malaysia Department of Water Management Delft University of TechnologyDelft 2600 GAThe Netherlands

城市洪水是世界性的重大问题,造成巨大的经济损失,严重威胁公共安全。减轻其影响的一种有希望的方法是开发实时洪水风险管理系统;然而,由于缺乏高时空降雨数据,构建这样一个系统通常具有挑战性。虽然一些方法(即地面降雨站或雷达和卫星... 详细信息

城市洪水是世界性的重大问题,造成巨大的经济损失,严重威胁公共安全。减轻其影响的一种有希望的方法是开发实时洪水风险管理系统;然而,由于缺乏高时空降雨数据,构建这样一个系统通常具有挑战性。虽然一些方法(即地面降雨站或雷达和卫星技术)可用于测量和(或)预测降雨强度,但使用这些方法很难获得具有理想时空分辨率的准确降雨数据。本文提出了一种基于图像的深度学习模型来估计具有高时空分辨率的城市降雨强度。进一步来说,一种称为基于图像的降雨卷积神经网络(image-based rainfall CNN,irCNN)模型是使用从现有密集传感器(即智能手机或交通摄像头)收集的降雨图像及其相应的测量降雨强度值开发的。随后使用经过训练的irCNN模型根据传感器的降雨图像有效地估计降雨强度。分别利用合成降雨数据和真实降雨图像来探索irCNN在理论和实际模拟降雨强度方面的准确性。结果表明,irCNN模型提供的降雨量估计值的平均绝对百分比误差在13.5%~21.9%之间,超过了文献中其他最先进的建模技术的性能。更重要的是,所提出的irCNN的主要特点是它在有效获取高时空城市降雨数据方面成本较低。irCNN模型为估算城市降雨强度提供了一种有前景的替代方案,可以极大地促进城市实时洪水风险管理的发展。

关键词：卷积神经网络时空分辨率降雨强度深度学习 CNN 替代方案公共安全智能手机

来源：评论

学校读者我要写书评

暂无评论

How to Increase Earnings by Exploiting the Veblen Effect

How to Increase Earnings by Exploiting the Veblen Effect

引用

European Control Conference (ECC)

作者： Franco Blanchini Daniele Casagrande Department of Mathematics Computer Science and Physics University of Udine Via delle Scienze 206 Udine Italy Polytechnic Department of Engineering and Architecture University of Udine Via delle Scienze 206 Udine Italy

The price/demand curve in a scenario characterized by the so-called Veblen effect is analytically identified as a modification, due to a variable that we call hankering, of the classical monotonic (price/demand) curve. Differentiating this function with respect to price and using a classical time variation of price, we obtain a control dynamical system. We exploit this model to analyse the possible trajectories and the equilibrium points. Based on these results, we design a strategy that maximizes the earnings of the seller.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Dem-Dfm Modeling Suffusion of Granular Soils Under Triaxial Compression

SSRN

引用

SSRN 2023年

作者： Wang, Tuo Wang, Pei Yin, Zhen-Yu Institute of Geotechnical Engineering School of Civil Engineering and Architecture East China Jiaotong University Jiangxi Nanchang330013 China Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Hung Hom Kowloon999077 Hong Kong

Suffusion of soils is one of the common hazards in geotechnical and ocean engineering. The influence of the stress condition of soils on suffusion, however, remains unexplored in previous studies. In this study, systematical numerical simulations are performed to investigate the suffusion of soils subjected to triaxial compression using the coupled discrete element method (DEM) and the dynamic fluid mesh (DFM) approach. By imposing a downward fluid flow, the suffusion in seven gap-graded soil samples with a wide range of fines contents is generated. Conventional triaxial (without suffusion) and suffusion (without triaxial compression) tests are also conducted as comparisons. By taking full advantage of the dynamic mesh technique, this coupled method is able to capture not only the deformation of the soil sample but also the evolutions of pores and micro-structures. Simulation results indicate that both the eroded mass and the fluid velocity are significantly increased under the condition of triaxial compression, which can be attributed to the deformation of the pores, the downward movement of the loading wall, and the increased hydraulic gradient during the suffusion. In addition, sensitivity analysis indicates that the percentage of eroded mass increases with the increase of hydraulic head, loading rate, and fines content. © 2023, The Authors. All rights reserved.

关键词： Soils

来源：评论

学校读者我要写书评

暂无评论

A Novel Technique for Frost Detection on a Refrigerator Evaporator

A Novel Technique for Frost Detection on a Refrigerator Evap...

引用

European Control Conference (ECC)

作者： Daniele Casagrande Giovanni Cortella Stefano Miani Polytechnic Department of Engineering and Architecture University of Udine Via delle Scienze 206 Udine Italy Department of Mathematics Computer Science and Physics University of Udine Via delle Scienze 206 Udine Italy

In this work, a novel and simple technique to detect the formation of frost in a commercial refrigerator evaporator is presented. The technique relies on the change of the dynamic behaviour of the valve opening to evaporator outlet temperature, which in turn effectively modifies the corresponding transfer function and can be easily implemented without additional hardware on the controlling unit.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Experimental analysis of defects in concrete structures

Experimental analysis of defects in concrete structures

引用

作者： Choudhary, Dhruva Singh, Priyanka Araszkiewicz, Krystyna Dixit, Saurav Amity School of Engineering and Technology Noida Amity University Noida Uttar Pradesh India Szczecin University of Technology Department of Civil Engineering and Architecture Poland Peter the Great St. Petersburg Polytechnic University Saint Petersburg195251 Russia Division of Research & Innovation Uttaranchal University Dehradun248007 India

To evaluate the state of the building's structure and determine whether it is structurally sound, forensic construction is required. The purpose of this study is to highlight some of the research that has been conducted on impacted concrete structures in various building types where destructive testing and non-destructive tests have been conducted. The structural integrity can be evaluated based on the extent of the deterioration from the experimental results. For instance, the cause of the corrode reinforcements was due to inadequate concrete cover, whereas the failure of the concrete wall was due to structures under design, which led to the collapse of the wall. This can be seen in the example of the corroded reinforcements. © 2022

关键词： Concrete construction

来源：评论

学校读者我要写书评

暂无评论

Effects of Effluent from a Dumpsite on the Physicochemical Properties of River Achichum in Bamendakwe, Northwest Cameroon

引用

Journal of Environmental Protection 2024年第9期15卷 934-947页

作者： Mofor Nelson Alakeh Keuwo Tiayong Francois Nchofua Festus Biosengazeh Mikwa Cyprian Chunkang Njoyim Estella Buleng Tamungang Department of Civil Engineering and Architecture National Higher Polytechnic Institute (NAHPI) The University of Bamenda Bambili Cameroon Department of Chemistry Higher Teacher Training College The University of Bamenda Bambili Cameroon Research Unit of Noxious Chemistry and Environmental Engineering (RUNOCHEE) Department of Chemistry Faculty of Science University of Dschang Dschang Cameroon Clean Water Institute Department of Chemistry and Biochemistry School of STEM Calvin University Grand Rapids Michigan USA

This study was aimed to assess the effects of effluent from a dumpsite on the physicochemical properties of river Achichum in Bamendakwe in the Bamenda I municipality, Northwest Region of Cameroon. The quality of water used for domestic purposes by the population of this area is mostly appreciated through its organoleptic assessment while no attention is paid to the physicochemical and microbiological properties. Samples (upstream, effluent, and downstream) were collected in the months of September 2022 and February 2023 and examined for organoleptic, physicochemical and bacteriological characteristics using standard methods. The river was contaminated to different extents by nitrates (28.56 - 149.91 mg/L), sulphates (246.89 - 725.42 mg/L) and heavy metals (0.01 - 0.04 mg/L for lead and 0.98 - 2.15 mg/L for aluminum). This contamination could be due to an inflow of the untreated effluent into the river. The river contained a high pollution level of lead and aluminum. Bacteriological investigations revealed that all the analyzed samples from the river contained indicators of faecal pollution such as Enterobacteria spp., E. coli, Streptococcus spp., Salmonella spp., Shigella spp., Staphylococcus spp. and Vibrio spp. Consequently, its utilization exposes consumers to health risks. Thus, water from the river should be treated prior to consumption.

关键词： Effluent Upstream Downstream Water Quality Faecal Contamination Bamendakwe

来源：评论

学校读者我要写书评

暂无评论

Framework based on building information modeling, mixed reality, and a cloud platform to support information flow in facility management

引用

Frontiers of engineering Management 2020年第1期7卷 131-141页

作者： Berardo NATICCHIA Alessandra CORNELI Alessandro CARBONARI Department of Civil and Building Engineering and Architecture(DICEA) Polytechnic University of MarcheAncona 60131Italy

The quality of information flow management has a remarkable effect on the entire life cycle of *** retrieval of technical specifications and features of building components and their performance assessment leads to increased cost and time and efficiency reduction,especially during the facility management(FM)*** introduction of building information modeling(BIM)in the construction industry can provide a valuable means of improving the organization and exchange of *** tools integrate multiple levels of information within a single digital model of a ***,the support given by BIM to FM is far from being fully *** can benefit from real-time communication with the data repository whenever the need for gathering contextual information and/or updating any data in the digital model *** framework proposed in this study aims to develop a system that supports on-site *** requirements have been determined from the analyses of procedures that are usually implemented in the building life *** studies set the standard for the development of a digital model of a building,which will be shared among various actors in charge of FM and accessed via a cloud ***,mixed reality is proposed to support specific information that is relevant to geometric features and procedures to be followed by *** article presents three use-cases supported by the proposed *** addition,this research article describes the first proof of concept regarding real-time support for FM.

关键词： information flow management BIM mixed reality common data environment facility management

来源：评论

学校读者我要写书评

暂无评论

Tcnsurv: A Tcn-Based Deep Survival Analysis Model for Failure Prediction in Urban Infrastructure Systems

SSRN

引用

SSRN 2023年

作者： Yang, Binyu Liang, Xuanwen Xu, Susu Wong, Man Sing Maa, Wei Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong Department of Architecture and Civil Engineering City University of Hong Kong Hong Kong Department of Civil Engineering Stony Brook University New York United States Department of Land Surveying and Geo-Informatics The Hong Kong Polytechnic University Hong Kong The Hong Kong Polytechnic University Shenzhen Research Institute Guangdong Shenzhen China Research Institute for Sustainable Urban Development The Hong Kong Polytechnic University Hong Kong

With the rapid development of smart cities, urban infrastructure systems produce massive data that reflect their real-time operational conditions. These data provide insights for system monitoring and operation, and many existing studies develop various machine learning methods to understand recurrent system conditions. However, the extreme operational conditions, which could cause system failures, are not well explored. Importantly, methods for the recurrent conditions may not be suitable for modeling the failures. To fill this gap, this paper proposes a novel task of failure prediction, which aims to predict system failures before it happens. To solve this task, we develop TCNSurv, a generalized model that integrates survival analysis and time series analysis. TCNSurv mainly contains three components: a data processing (DP) module, a time series (TS) module, and a survival analysis (SA) module. The proposed model is validated on three real-world datasets: vibration, traffic, and electricity, and results show that TCNSurv outperforms state-of-the-art regression-based models, survival analysis-based models, as well as integrated models. The research outcomes could help to understand the failure patterns of urban infrastructure systems and to develop early warning systems for smart cities. © 2023, The Authors. All rights reserved.

关键词： Time series analysis

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：