scholarly journals Innovative Upscaling of Architectural Elements for Strengthening Building Structures

2019 ◽  
Vol 11 (9) ◽  
pp. 2636 ◽  
Author(s):  
Hing-Ho Tsang
Keyword(s):  
Environmental Sustainability ◽  
Seismic Retrofitting ◽  
Invasive Technique ◽  
Building Structures ◽  
Architectural Elements ◽  
Codes Of Practice ◽  
Performance Requirements ◽  
Strength Capacity ◽  
Innovative Idea ◽  
Stringent Performance

For conservation of heritages or life prolongation of aged buildings that contributes to environmental sustainability, there is a global need of structural strengthening or upgrading so as to restore their original functions or fulfil more stringent performance requirements stipulated in modern design codes of practice. However, the actual implementation is usually met with resistance from the property owner; hence, it is desirable to adopt an effective, economical and less invasive technique. In order to provide a further incentive, this article explores an innovative idea of upscaling decorative architectural elements, such as brackets, knee braces and corbels, in order that they also possess adequate strength capacity to resist extreme loadings such as earthquake actions. The required dimensions of architectural brackets for seismic retrofitting of concrete beam-column joints are calculated for different levels of seismicity through a parametric study. It is demonstrated that the proposed design can enhance both the aesthetics and structural performance of a building. This exemplifies how art can be integrated into engineering design for solving real-world problems.

scholarly journals Mitigating natural events to avoid disaster in public school buildings: seismic retrofitting of SDN 42 Korong Gadang

2018 ◽  
Vol 229 ◽  
pp. 02021
Author(s):  
James Mwangi ◽  
Laura Putri ◽  
Listhbeth Collins
Keyword(s):  
School Facilities ◽  
Seismic Retrofitting ◽  
Building Structures ◽  
National Agency ◽  
Electrical Grid ◽  
The North ◽  
Australian Plate ◽  
West Sumatra

With over 50 million students, Indonesia has the fourth largest education system in the world. The first twelve years of education are compulsory for all citizens. The students, together with over 3 million teachers spend six (or five in some cases) days a week at over 300,000 schools, typically from 6:30 AM to 2 (or 3) PM. Geographically, Indonesia is traversed by the infamous “ring of fire” and prone to natural events resulting from the tectonic plate movements of the Australian Plate from the South, the Eurasian and Sunda Plates from the North and the Philippine Plate from the East. Left unmitigated, these natural events would lead to natural disasters emanating from resulting earthquakes and leading to tsunamis, landslides, the collapse of building structures and failure of lifelines (roads, pipelines, electrical grid, etc.). In an effort to provide disaster-safe schools, the National Agency for Disaster Management has required that school facilities be a community center in case of disasters and serve as emergency shelters. Retrofit of existing buildings will be needed to comply with government guidelines. This paper presents a case study of the determination of structural deficiencies of an existing school building in SDN 42 Korong Gadang, Padang, West Sumatra and implementation of a seismic retrofit (design and construction) at the same building to mitigate potential earthquake disaster.

Performance Analysis of a Web Server

2009 ◽  
pp. 366-379
Author(s):  
Jijun Lu ◽  
Swapna S. Gokhale
Keyword(s):  
Rapid Development ◽  
Web Server ◽  
Web Servers ◽  
Software Infrastructure ◽  
Software Configuration ◽  
Performance Requirements ◽  
Use Of The Internet ◽  
Stringent Performance ◽  
Source Of Information ◽  
Selection Of

With the rapid development and widespread use of the Internet, Web servers have become a dominant source of information and services. The use of Web servers in business and critical application domains imposes stringent performance requirements on them. These performance requirements cast a direct influence on the choice of the configuration options of the hardware and the software infrastructure on which a Web server is deployed. In addition to the selection of configuration options, for a given level of load and a particular hardware and software configuration, it is necessary to estimate the performance of a Web server prior to deployment.

Sustainable Construction - Environmental Impacts Assessment of Architectural Elements and Building Services

2020 ◽  
Vol 47 ◽  
pp. 77-83 ◽  
Author(s):  
Andrea Moňoková ◽  
Silvia Vilčeková
Keyword(s):  
Life Cycle ◽  
Environmental Impact ◽  
Environmental Impacts ◽  
Building Materials ◽  
Sustainable Construction ◽  
Building Structures ◽  
Single Family ◽  
Architectural Elements ◽  
Ozone Formation Potential ◽  
Environmental Technologies

Increasing concerns about negative environmental impacts of building structures call for higher demands on the design of environmental friendly buildings. This article is aimed at assessing the overall environmental impact of buildings throughout its life cycle as well as on environmental impact of all building materials and building services for single-family homes. This analysis examines the role of utilized green environmental technologies for the following selected impact categories: GWP - global warming potential, EP - eutrophication potential, AP - acidification potential POCP and photochemical ozone formation potential expressed in kg CO2eq, PO43-eq, SO2eq and ethylene within the “Cradle to gate with options” boundary. The LCA assessment methodology and eToolLCD software have been used to model the effects of houses’ life cycle.

scholarly journals Evaluation of the Structural Performance of a Novel Methodology for Connecting Modular Units Using Straight and Cross-Shaped Connector Plates in Modular Buildings

2020 ◽  
Vol 10 (22) ◽  
pp. 8186
Author(s):  
Sang-Sup Lee ◽  
Keum-Sung Park ◽  
Ju-Seong Jung ◽  
Kang-Seok Lee
Keyword(s):  
Longitudinal Direction ◽  
Structural Performance ◽  
Building Structures ◽  
Drift Angle ◽  
Modular Units ◽  
Strength Capacity ◽  
Story Drift ◽  
Modular Buildings ◽  
Cyclic Loading Tests ◽  
Modular Structures

The strength capacity of modular buildings is determined by the weakest part, and connections between modular units are often weaker than the modular units themselves. Thus, to verify the safety of modular structures, the structural performance of connections between modular units should be evaluated; the practical suitability of connection methods under a range of construction conditions should also be determined. In conventional modular building structures, modular units are generally connected using bolts between connector plates, interlocking devices, or steel plate welding. However, current methods are not technically or practically suitable for all types of modular buildings, such as high-rise modular buildings. Here, we describe a novel technology for connecting modular units to ensure the safety of modular structures. In this study, straight and cross-shaped metal connectors that use rectangular tubular columns and channel beams were proposed for connecting modules. Their structural performance was evaluated through cyclic loading tests by controlling the story drift angle in the width and longitudinal directions. The experimental results demonstrated that all specimens exhibited relatively stable behavior up to a drift angle of 0.04 rad, and there was a superior response in terms of energy absorption capability in the longitudinal direction results compared to the width direction. However, in comparison to the cross-shaped connector plate, the stiffness of the straight connector plate decreased as the drift angle of the column increased.

Performance Analysis of a Web Server

2010 ◽  
pp. 230-242 ◽  
Author(s):  
Lu Jijun ◽  
S. Gokhale Swapna
Keyword(s):  
Rapid Development ◽  
Web Server ◽  
Web Servers ◽  
Software Infrastructure ◽  
Software Configuration ◽  
Performance Requirements ◽  
Use Of The Internet ◽  
Stringent Performance ◽  
Source Of Information ◽  
Selection Of

With the rapid development and widespread use of the Internet, Web servers have become a dominant source of information and services. The use of Web servers in business and critical application domains imposes stringent performance requirements on them. These performance requirements cast a direct influence on the choice of the configuration options of the hardware and the software infrastructure on which a Web server is deployed. In addition to the selection of configuration options, for a given level of load and a particular hardware and software configuration, it is necessary to estimate the performance of a Web server prior to deployment.

Performance Analysis of a Web Server

2010 ◽  
pp. 660-672
Author(s):  
Lu Jijun ◽  
S. Gokhale Swapna
Keyword(s):  
Rapid Development ◽  
Web Server ◽  
Web Servers ◽  
Software Infrastructure ◽  
Software Configuration ◽  
Performance Requirements ◽  
Use Of The Internet ◽  
Stringent Performance ◽  
Source Of Information ◽  
Selection Of

With the rapid development and widespread use of the Internet, Web servers have become a dominant source of information and services. The use of Web servers in business and critical application domains imposes stringent performance requirements on them. These performance requirements cast a direct influence on the choice of the configuration options of the hardware and the software infrastructure on which a Web server is deployed. In addition to the selection of configuration options, for a given level of load and a particular hardware and software configuration, it is necessary to estimate the performance of a Web server prior to deployment.

scholarly journals fv3gfs-wrapper: a Python wrapper of the FV3GFS atmospheric model

2021 ◽  
Vol 14 (7) ◽  
pp. 4401-4409
Author(s):  
Jeremy McGibbon ◽  
Noah D. Brenowitz ◽  
Mark Cheeseman ◽  
Spencer K. Clark ◽  
Johann P. S. Dahm ◽  
...  
Keyword(s):  
Model Performance ◽  
Atmospheric Model ◽  
Simulation Software ◽  
Storage Model ◽  
High Productivity ◽  
Global Atmospheric Model ◽  
Performance Requirements ◽  
Wide Range ◽  
Stringent Performance ◽  
Cubed Sphere

Abstract. Simulation software in geophysics is traditionally written in Fortran or C++ due to the stringent performance requirements these codes have to satisfy. As a result, researchers who use high-productivity languages for exploratory work often find these codes hard to understand, hard to modify, and hard to integrate with their analysis tools. fv3gfs-wrapper is an open-source Python-wrapped version of the NOAA (National Oceanic and Atmospheric Administration) FV3GFS (Finite-Volume Cubed-Sphere Global Forecast System) global atmospheric model, which is coded in Fortran. The wrapper provides simple interfaces to progress the Fortran main loop and get or set variables used by the Fortran model. These interfaces enable a wide range of use cases such as modifying the behavior of the model, introducing online analysis code, or saving model variables and reading forcings directly to and from cloud storage. Model performance is identical to the fully compiled Fortran model, unless routines to copy the state in and out of the model are used. This copy overhead is well within an acceptable range of performance and could be avoided with modifications to the Fortran source code. The wrapping approach is outlined and can be applied similarly in other Fortran models to enable more productive scientific workflows.

scholarly journals Seismic Retrofitting and Health Monitoring of School Buildings of Cyprus

2013 ◽  
Vol 7 (1) ◽  
pp. 208-220 ◽  
Author(s):  
C.Z. Chrysostomou ◽  
N. Kyriakides ◽  
A.J. Kappos ◽  
L. Kouris ◽  
E. Georgiou ◽  
...  
Keyword(s):  
Health Monitoring ◽  
Future Generation ◽  
Seismic Retrofitting ◽  
School Buildings ◽  
Assessment Methodology ◽  
Existing Buildings ◽  
Wireless Monitoring ◽  
Codes Of Practice ◽  
Seismic Forces

The vulnerability of existing buildings to seismic forces and their retrofitting is an international problem. The majority of structures in seismic-prone areas worldwide are structures that have been designed either without the consideration of seismic forces, or with previous codes of practice specifying lower levels of seismic forces. In Cyprus, after the three earthquakes that occurred in 1995, 1996, and 1999, the Cyprus State, acting in a pioneering way internationally, has decided the seismic retrofitting of all school buildings, taking into account the sensitivity of the society towards these structures, which house the future generation of the society. In this paper the overall assessment methodology is presented, along with details of the over 10 year ongoing retrofitting program of the school buildings of Cyprus, with emphasis on the description of the program and the development of a wireless monitoring system. In addition, mathematical models of selected school buildings are presented and comparison is made with in-situ measurement.

scholarly journals Software-Defined Heterogeneous Vehicular Networking: The Architectural Design and Open Challenges

2019 ◽  
Vol 11 (3) ◽  
pp. 70 ◽  
Author(s):  
Adnan Mahmood ◽  
Wei Zhang ◽  
Quan Sheng
Keyword(s):  
Intelligent Transportation Systems ◽  
Autonomous Vehicles ◽  
Traffic Management ◽  
Architectural Design ◽  
Transportation Systems ◽  
Safety Critical ◽  
Vehicular Networking ◽  
Performance Requirements ◽  
Radio Access ◽  
Stringent Performance

The promising advancements in the telecommunications and automotive sectors over the years have empowered drivers with highly innovative communication and sensing capabilities, in turn paving the way for the next-generation connected and autonomous vehicles. Today, vehicles communicate wirelessly with other vehicles and vulnerable pedestrians in their immediate vicinity to share timely safety-critical information primarily for collision mitigation. Furthermore, vehicles connect with the traffic management entities via their supporting network infrastructure to become more aware of any potential hazards on the roads and for guidance pertinent to their current and anticipated speeds and travelling course to ensure more efficient traffic flows. Therefore, a secure and low-latency communication is highly indispensable in order to meet the stringent performance requirements of such safety-critical vehicular applications. However, the heterogeneity of diverse radio access technologies and inflexibility in their deployment results in network fragmentation and inefficient resource utilization, and these, therefore, act as bottlenecks in realizing the aims for a highly efficient vehicular networking architecture. In order to overcome such sorts of bottlenecks, this article brings forth the current state-of-the-art in the context of intelligent transportation systems (ITS) and subsequently proposes a software-defined heterogeneous vehicular networking (SDHVNet) architecture for ensuring a highly agile networking infrastructure to ensure rapid network innovation on-demand. Finally, a number of potential architectural challenges and their probable solutions are discussed.

Sign in / Sign up

Export Citation Format

Share Document