检索结果-内蒙古大学图书馆

2018 Workshop on Multidisciplinary and Its Applications: Applied Mathematics, Computer Science, Information Systems, and Information Technology, WMA-Mathcomtech 2018

作者： Dinata, Rozzi Kesuma Abdullah, Dahlan Hartono, H. Erliana, Cut Ita Riasti, Berliana Kusuma Iskandar, Akbar Sari, Ifit Novita Nurmawati, N. Nanuru, Ricardo Freedom Putri, Lusi Dwi Manurung, Rosida Tiurma Sriadhi, S. Saleh, A.A. Astari, T. Khaddafi, Muammar Department of Informatics Universitas Malikussaleh Aceh Indonesia Department of Computer Science STMIK IBBI Medan Indonesia Department of Industrial Engineering Universitas Malikussaleh Aceh Indonesia Department of Informatics Universitas Sebelas Maret Surakarta Indonesia Department of Informatics STMIK AKBA Makassar Indonesia Departement Of: Social Science Education Program Post Graduate Program Universitas Kanjuruhan Malang Malang Indonesia Faculty of Industry Technique University of 45 Surabaya Indonesia Universitas Kristen Indonesia Maluku Ambon Indonesia Department of Civil Engineering Universitas Lancang Kuning Pekanbaru Indonesia Graduate Program in Scientific Psychology Universitas Kristen Maranatha Indonesia Department of Electrical Engineering Universitas Negeri Medan Indonesia Statistics Financial and Social Sciences Research Group Indonesia Department of Elementary School Teacher Education STKIP Citra Bangsa Aceh Utara Indonesia Department of Accounting Universitas Malikussaleh Aceh Indonesia

At the Unit Laka Lantas Polres Lhokseumawe determining accident-prone areas on roads in Lhokseumawe still using manual systems. Determination of accident-prone areas are less effective because the police Unit Laka Lantas Polres Lhokseumawe just using the data of the last year and had to repeatedly calculate manually accident-prone areas based on the number of human casualties. In this study the system implementation CUSUM method (Cummulative Summary) to determine the accident-prone areas designed using the web-based programming language PHP. In this system there are three processes to determine areas prone to accidents, the accident rate calculations based on the weighted severity, blacksite calculations using the Z-Score method for determining areas prone to accident blackspots and calculations using the CUSUM method to determine the critical points of an accident. The data used are secondary data obtained from the Police Unit Laka Lantas Polres Lhokseumawe years 2009-2013. © Published under licence by IOP Publishing Ltd.

关键词： Accidents

来源：评论

学校读者我要写书评

暂无评论

Seawater Intrusion Modeling on Groundwater Confined Aquifer in Semarang

引用

Procedia Environmental Sciences 2015年 23卷 110-115页

作者： Edy Suhartono P. Purwanto S. Suripin Doctorate Program Of Environmental Studies Post Graduate Program Diponegoro University Jl. Imam Barjo SH No. 5 Semarang-Indonesia-50000 Polytechnic State Of Semarang Jl. Prof.Sudarto SH Semarang - Indonesia- 50000 Department Of Chemical Engineering Faculty Of Engineering Diponegoro University Jl. Prof.Sudarto SH Semarang – Indonesia- 50000 Department Of Civil Engineering Faculty Of Engineering Diponegoro University Jl. Prof.Sudarto SH Semarang – Indonesia- 50000

The focus of this study is to identify and describe of a seawater intrusion in confined aquifer modelling in Semarang with a descriptive quantitative analytical method. The results showed potentially experiencing seawater intrusion which increased of 0.575 km2/years. Seawater intrusion models divide to 3 models are the western route have a maximum error is 27.9%, then the middle route have the maximum error is 41.1% and the eastern route have the maximum error is 40%. In 2035, the seawater intrusion on western route is predicted about 3.0 km from the coastline, 4 km for middle route, and about 3.25 km for eastern route. This is one of the information that from right now, the management of a groundwater in the confined aquifer in Semarang is necessary to supervise and better and more optimal controlling

关键词： Coastal Areas Groundwater Chloride Seawater Intrusions

来源：评论

学校读者我要写书评

暂无评论

Corrigendum to “Experimental and numerical investigation of SHS truss T-joints reinforced with sidewall plates” [Thin-Walled Struct. 145 (2019) 1–16]

引用

Thin-Walled Structures 2020年 146卷

作者： N.V. Gomes L.R.O. de Lima P.C.G. da S Vellasco A.T. da Silva M.C. Rodrigues L.F. Costa-Neves Structural Engineering Department UERJ – State University of Rio de Janeiro Brazil PGECIV - Civil Engineering Post-Graduate Program UERJ – State University of Rio de Janeiro Brazil INESCC Civil Engineering Department - University of Coimbra Portugal

来源：评论

学校读者我要写书评

暂无评论

The influence of earthquake force directions on building construction in Lombok Island: a case study of Pandanduri dam in East Lombok

引用

IOP Conference Series: Earth and Environmental Science 2020年第1期413卷

作者： F Afrizal D S Agustawijaya A Lestari Post-Graduate Study Program in Civil Engineering University of Mataram Indonesia.

Lombok Island is one of the regions in Indonesia that has a relatively high risk of earthquakes due to being flanked by two earthquake sources, namely from the south in the form of Indo-Australian plate thrusting (subduction mega-thrust) and north there is a north arc pressure (Flores thrust). Pandanduri Dam is located in the direction of the earthquake force N 171° E. This study aims to determine changes in dam planning using earthquake force calculations from SNI 1726-2002 to SNI 1726-2012 and the effect of the direction of earthquake strength on dam stability. The analysis results show that earthquake risk in Lombok Island is 0.34 g and 0.42 g for the possibility of exceeding 10% and 2% in 50 years. SNI changes in earthquake force calculations have decreased by 26% for 500 years and an increase of 10% for 2500 years. The percentage of the earthquake force directions is not known to be greater than the percentage the earthquake force directions known that N 171°E is influenced by the angle produced by the earthquake direction N 171° E which is 0.094° for the main force direction of the dam and 89,906° for the direction perpendicular to the dam.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A System Dynamics Model of Sustainable Construction for High rise Residential Projects in Developing Countries: Case of Indonesia

引用

Open civil engineering Journal 2022年第1期16卷

作者： Sutantio, Aditya Anwar, Nadjadji Wiguna, I Putu Artama Suryani, Erma Post Graduate Program Civil Engineering Department Institut Teknologi Sepuluh Nopember Jalan Raya ITS Surabaya 60111 Indonesia Civil Engineering Department Institut Teknologi Sepuluh Nopember Jalan Raya ITS Surabaya 60111 Indonesia Information System Department Institut Teknologi Sepuluh Nopember Jalan Raya ITS Surabaya 60111 Indonesia

Introduction: Despite its contribution to urban development, high rise residential projects also cause adverse impact on the living environment. To address the problem, a sustainable construction as a new paradigm has been introduced. Various papers have examined the importance of sustainable construction. However, most studies focused on social and environmental aspects and with few consideration on the economic objective of the business. This study aimed to fill the research gap by presenting a dynamic model to improve social, environmental and economic performance of sustainable construction for high rise residential projects in developing countries. Methods: This study started with a literature review as a basis for a qualitative survey conducted in thirty high rise residential projects in Indonesia, to identify the influencing factors and the interrelationships. To analysis the data, a system dynamics approach was utilized. Results: The simulations reveal that the current regulation and construction practices are insufficient to reduce environmental negative impacts. In order to formulate better policies, three scenarios comprised the implementation of building energy regulation, tax incentives policy, and a policy mix were employed. The results show that the scenarios could improve construction sustainability performance in some extends. Conclusion: The combination of building regulation and tax incentives policy is effective to achieve environmental and social as well as economic aspects of sustainable construction which is suitable for investors. Based on the results, it is concluded that the model can be used to formulate various policies in the future to enhance sustainable construction of high rise residential projects in developing countries. © 2022 Sutantio et al.

关键词： Environmental impacts Lean construction Life cycle cost Regulation Sustainable construction System dynamics

来源：评论

学校读者我要写书评

暂无评论

Effect of Ozonation and Biotreatment on Molecular Size and Hydrophilic Fractions of Natural Organic Matter

引用

ACS Symposium Series 1996年第649期649卷 196-196页

作者： Koechling, M. T. Shukairy, H. M. Scott Summers, R. Department of Civil Engineering University of Cincinnati Cincinnati OH 45221-0071 P.O. Box 210071 United States Post Graduate Research Program Oak Ridge Inst. for Sci./Education U.S. Environmental Protection Agency Cincinnati OH 45268 26 West Martin Luther King Drive United States

The impact of ozonation and ozonation combined with biotreatment on the molecular size (MS) distribution, hydrophilicity, chlorine reactivity and chemical composition of a groundwater natural organic matter was investigated. Chlorination of isolated fractions was conducted under constant precursor concentrations and chlorination conditions. In the untreated solution, the <1K MS fraction was the most reactive to chlorination, and the nonhumic fraction showed the highest bromine incorporation. Ozonation caused a shift to smaller MS and hydrophilic fractions, and from a polyaromatic nature to a polysaccharidal and proteinaecous nature, as measured by pyrolysis-GC/MS analyses, but did not affect the disinfection by-product (DBP) specific yield in the larger MS fractions. It did cause a shift towards more bromosubstituted DBFs. Subsequent biotreatment was most effective in dissolved organic carbon removal for the <1K MS fraction, but did not exhibit selective DBF precursor removal in any fraction.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Effect of Method and Duration of Curing on the Compressive Strength of the Lime-Fly Ash Geopolymer Concrete

引用

Journal of Physics: Conference Series 2020年第1期1594卷

作者： Andi Arham Adam Sri Nur Akifa Atur P.N. Siregar Mustofa Department of Civil Engineering Tadulako University Post-Graduate Program Tadulako University Department of Mechanical Engineering Tadulako University

The use of lime to produce ambient cured Geopolymer concrete is one of a practical solution to avoid heat curing in the production of geopolymer concrete. The addition of lime in the geopolymer system will add another hardened mechanism, i.e. hydration in addition to condensation-polymerisation. This research aims to determine the influence of air and water curing on the strength of geopolymer concrete which uses class F fly ash and lime as raw materials. The geopolymer concrete was produced by varying the activator (sodium silicate and sodium hydroxide) with the variation of the activator to binder ratio of 0.45, 0.50, 0.55, and 0.60. Five per cent of the fly ash was replaced by slaked lime and the water added to the mix to maintain the ratio of water to solid (activator + binder) to 0.32. The test specimens were 100 mm dia x 200 mm height cylinder. Water-immersion curing was performed for 7, 14, and 21 days and the compressive strength test was done at 28 days. The results show that there is a difference in the curing process between the geopolymer concrete and the normal concrete. In the geopolymer concrete, there is a decrease in compressive strength if soaked for seven days and recovered with the increase in the age of immersion. Whereas for normal concrete, the compressive strength continues to increase with increasing age of immersion.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Visual assessment deterioration analysis of runways at Sultan Aji Muhammad Sulaiman Sepinggan Airport Balikpapan

引用

AIP Conference Proceedings 2019年第1期2114卷

作者： Yanti Sri Sunarjono Agus Riyanto Nurul Hidayati Alfia Magfirona 1Civil Engineering Post Graduate Program Universitas Muhammadiyah Surakarta Surakarta Central Java Indonesia

Sultan Aji Muhammad Sulaiman Sepinggan (SAMS) Airport has an important role as the gateway of economic activity in Balikpapan, East Kalimantan. Elements of the airport consist of runways, taxiway, apron and the terminal building of departure and arrival. The runway has an important role as a key element in airport infrastructure, this is related to aircraft and passenger safety in air traffic at SAMS Airport, which is currently one of the best airports in Indonesia that meets the International Standard qualification. The purpose of this study is to perform visual assessment of runway deterioration at SAMS Airport using PCI (Pavement Condition Index) method, to know the factors affecting runway deterioration and the effective distress treatment to overcome deterioration at a runway. The visual assessment data are collected from PT. Angkasa Pura I (Persero) Sepinggan, by measuring the types and area of deterioration occurring on the runway during 1-month period (in September 2018), then PCI is analyzed by using ASTM D 5340 – 98. The results show that the PCI value is 80.4 which means the rating is excellent. The most common typical distress occurred at Threshold Runway 25 section 1 with the type of distress is block cracking which mainly caused by asphalt concrete shrinkage and daily temperature condition resulting in stress or strain series, another type is depression initially caused by the settlement from the soil foundation or construction process. Since PCI shows excellent state, the distress repair treatment to be performed is surface repair or routine maintenance with partial mill and overlay method.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The effect of reinforcement ratio of hibiscus skin with a resin coating on lightweight concrete beam under bending

引用

AIP Conference Proceedings 2023年第1期2609卷

作者： Rahadian Bagiartha Ni Nyoman Kencanawati Suryawan Murtiadi Shofia Rawiana Suparjo 1Post Graduate Program of Civil Engineering Mataram University Mataram Indonesia 2Civil Engineering Department Mataram University Mataram Indonesia

The use of natural fibers as an alternative of reinforcement for the structure of light weight concrete beam is highly encouraging. The use of natural fiber was chosen because of its easy availability; easy to process, abundant in number, renewable, inexpensive, and relatively high tensile strength. Indeed, it is an environmentally friendly material. One of natural fiber is skin of hibiscus. Hence, the objective of this study is to investigate the effect of reinforcement ratio of hibiscus skin with a resin coating towards the flexural strength of light concrete beam. This study was conducted at Laboratory Structures and Materials, Mataram University. The dimensions of concrete beams were 15× 20× 150 cm and the variation of tensile reinforcement from hibiscus skin were 3, 6, and 8 with a diameter of 12 mm. In addition, the ratio of reinforcement was 0,014; 0,031; and 0,046. The yield strength of hibiscus skin with a resin coating in tension was 43,67 MPa. Furthermore, the largest ultimate load (Pu) for the ratio reinforcement of 0,014; 0,031; and 0,046 were 7,564 kN, 12,811 kN, and 14,19 kN respectively. Meanwhile, the ultimate moments (Mu) were 2,125 kNm, 3,125 kNm and 3,625 kNm for for the ratio reinforcement of 0,014; 0,031; and 0,046 respectively. Therefore, the greater the ratio of the reinforcement results the higher of the load resistance. Thus, the hibiscus reinforcement has the ability to increase the beam resistance against the flexural load.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A Review of Netzero Energy Buildings in Brazil

SSRN

引用

SSRN 2023年

作者： Matana Júnior, Sidnei Frandoloso, Marcos Antonio Leite Brião, Vandré Barbosa Universidade de Passo Fundo Post-Graduate Program in Civil and Environmental Engineering Campus I BR 285 km 292.7 B. Passo Fundo/RS São José99052-900 Brazil Campus I BR 285 km 292.7 B. Passo Fundo/RS São José99052-900 Brazil

Buildings are relevant electricity consumers, and projections of increased demand until 2040, leading to the necessary actions aimed at energy efficiency, consumption reduction, and the transition to a renewable energy matrix. The 2030 Agenda addresses these subjects, and this context is inserted in the concept of Netzero Energy Buildings (NZEB). The concept combines consumption reduction and its compensation with renewable energy. The main objective of this present study is to establish an overview of NZEB in Brazil and to identify the strategies adopted by these buildings. A survey of strategies was carried out based on the buildings certified by the Green Building Council Brazil, available on the companies, designers, and contractors’ websites. In Brazil, there are 75 buildings in the certification process, and 21 have already proven their self-sufficiency, evidencing the use of solutions to reduce consumption, such as lighting and efficient equipment and passive architecture strategies. The research has identified the photovoltaic solar energy predominance as a strategy for NZEB. Brazil presents a favorable scenario for the NZEBs expansion due to climatic characteristics and public policies that contribute to meeting the Sustainable Development Goal 7, objectives scenario that is sub-exploited nowadays. © 2023, The Authors. All rights reserved.

关键词： Energy efficiency

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：