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1 – 10 of 51Mansoureh Gholami, Majid Mofidi Shemirani and Rima Fayaz
The purpose of this paper is to present a methodology to quantify the solar energy potential for applying photovoltaic systems and find an efficient geometry for urban blocks to…
Abstract
Purpose
The purpose of this paper is to present a methodology to quantify the solar energy potential for applying photovoltaic systems and find an efficient geometry for urban blocks to obtain a better quality of daylighting in terms of continuous daylight autonomy (DA) and spatial DA with less energy consumption.
Design/methodology/approach
The paper is based on a complete simulation of the topography and micro-climate of the area under study. Simulations were performed using ArcGIS and Rhinoceros and urban daylight (UD) and urban modeling interface plugin for a neighborhood in the region of Narmak in Tehran, Iran. Five configurations of a neighborhood were compared using simulations.
Findings
It was found that the impact of the geometrical form on daylight gain and energy consumption is significant and the terraced model is the most suitable form for obtaining a constant floor area ratio. Furthermore, it is an optimal form of urban blocks to gain the most energy through photovoltaic systems in the neighborhood as it would be able to satisfy about 42 percent of the energy needs.
Originality/value
Planning to achieve sufficient energy factors in cities is a difficult task, since urban planners often do not have adequate technical knowledge to measure the contribution of solar energy in urban plans and this paper aims to introduce a comprehensive modeling methodology by which the urban energy planning can be used and understood in the urban context to make it completely clear as a strategy of implementation.
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Silvia Ronchi, Stefano Salata and Andrea Arcidiacono
The spatial development of urban areas affects the characteristics of landscape as well as people’s aesthetic perception of it. Specifically, sprawl results in an urban morphology…
Abstract
Purpose
The spatial development of urban areas affects the characteristics of landscape as well as people’s aesthetic perception of it. Specifically, sprawl results in an urban morphology which is diametrically opposed to the compact city model and which assumes several kinds of patterns: for example “striped”, “ribbon” or “leapfrogged” urban development. Assessing urban morphology in spatial terms is crucial to urban policy, while landscape metrics are the key to a comprehensive understanding of different urban development patterns. The purpose of this paper to design and test an urban morphology indicator (UMI) for the Lombardy Regional Landscape Plan.
Design/methodology/approach
The paper describes an UMI that can be used to identify the heterogeneity of built-up patterns according to urban porosity, fragmentation and patch shape. This UMI is a result of Esri ArcGIS 10.3 “grouping analysis” which works by applying a spatial statistical metric for clustering geometries in a given geographical area.
Findings
Morphological analysis was used in regional urban development policies with a view to minimising impact on surrounding ecosystems and preserving the natural environment and landscape. It defines 28 different urban morphology patterns in the region, which are divided into systems, polarities and urbanised units.
Originality/value
The proposed methodology differs from those traditionally used in qualitative/descriptive landscape planning and supports the identification of morphological features with quantitative statistical and spatial data, allowing a fine-scale assessment of complex metrics.
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Nandakishor Sirdeshpande and Vishwanath Udupi
Wireless communication channel provides a wide area of applications in the field of communication, distributed sensor network and so on. The prominence of the wireless…
Abstract
Purpose
Wireless communication channel provides a wide area of applications in the field of communication, distributed sensor network and so on. The prominence of the wireless communication channel is because of its robust nature and the sustainability for the precise ranging and the localization. The precision and accuracy of the wireless communication channel largely depend on the localization. The development of the wireless communication channel with improved benefits needs the accurate channel model.
Design/methodology/approach
This paper characterizes the tangential path loss model in the WINNER based wireless communication channel model. The measurements taken in the WINNER channel model are compared with the tangential path loss characterized WINNER Channel model.
Findings
The model operates well over the varying antenna orientations, measurement condition and the propagation condition. The proposed tangential path loss model is performing well over the various outdoor scenarios.
Originality/value
The proposed characterization shows change in the small-scale parameters (SSP), such as power, delay, angle of arrival and angle of departure as well as the large-scale parameters (LSP), such as RMS delay spread, shadowing, path loss and Ricean factor associated with the model.
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Omprakash Ramalingam Rethnam and Albert Thomas
The building sector contributes one-third of the energy-related carbon dioxide globally. Therefore, framing appropriate energy-related policies for the next decades becomes…
Abstract
Purpose
The building sector contributes one-third of the energy-related carbon dioxide globally. Therefore, framing appropriate energy-related policies for the next decades becomes essential in this scenario to realize the global net-zero goals. The purpose of the proposed study is to evaluate the impact of the widespread adoption of such guidelines in a building community in the context of mixed-mode buildings.
Design/methodology/approach
This study decentralizes the theme of improving the energy efficiency of the national building stock in parcels by proposing a community-based hybrid bottom-up modelling approach using urban building energy modelling (UBEM) techniques to analyze the effectiveness of the community-wide implementation of energy conservation guidelines.
Findings
In this study, the UBEM is developed and validated for the 14-building residential community in Mumbai, India, adopting the framework. Employing Energy Conservation Building Code (ECBC) compliance on the UBEM shows an energy use reduction potential of up to 15%. The results also reveal that ECBC compliance is more advantageous considering the effects of climate change.
Originality/value
In developing countries where the availability of existing building stock information is minimal, the proposed study formulates a holistic framework for developing a detailed UBEM for the residential building stock from scratch. A unique method of assessing the actual cooling load of the developed UBEM is presented. A thorough sensitivity analysis approach to investigate the effect of cooling space fraction on the energy consumption of the building stock is presented, which would assist in choosing the appropriate retrofit strategies. The proposed study's outcomes can significantly transform the formulation and validation of appropriate energy policies.
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GTE's Smart CampusSM. Today's college‐bound students are growing up in a quickly evolving world of electronic information access. From the telephone, radio, cable TV, and personal…
Abstract
GTE's Smart CampusSM. Today's college‐bound students are growing up in a quickly evolving world of electronic information access. From the telephone, radio, cable TV, and personal computers, they are already accustomed to receiving and interacting with electronic data through these communications resources.
Ajree Ducol Malawani, Achmad Nurmandi, Eko Priyo Purnomo and Taufiqur Rahman
This paper aims to examine tweet posts regarding Typhoon Washi to contend the usefulness of social media and big data as an aid of post-disaster management. Through topic modelling…
Abstract
Purpose
This paper aims to examine tweet posts regarding Typhoon Washi to contend the usefulness of social media and big data as an aid of post-disaster management. Through topic modelling and content analysis, this study examines the priorities of the victims expressed in Twitter and how the priorities changed over a year.
Design/methodology/approach
Social media, particularly Twitter, was where the data gathered. Using big data technology, the gathered data were processed and analysed according to the objectives of the study. Topic modelling was used in clustering words from different topics. Clustered words were then used for content analysis in determining the needs of the victims. Word frequency count was also used in determining what words were repeatedly used during the course period. To validate the gathered data online, government documents were requested and concerned government agencies were also interviewed.
Finding
Findings of this study argue that housing and relief goods have been the top priorities of the victims. Victims are seeking relief goods, especially when they are in evacuation centres. Also, the lack of legal basis hinders government officials from integrating social media information unto policymaking.
Research limitation
This study only reports Twitter posts containing keywords either, Sendong, SendongPH, Washi or TyphoonWashi. The keywords were determined based on the words that trended after Typhoon Washi struck.
Practical implication
For social media and big data to be adoptable and efficacious, supporting and facilitating conditions are necessary. Structural, technical and financial support, as well as legal framework, should be in place. Maintaining and sustaining positive attitude towards it should be taken care of.
Originality/value
Although many studies have been conducted on the usefulness of social media in times of disaster, many of these focused on the use of social media as medium that can efficiently spread information, and little has been done on how the government can use both social media and big data in collecting and analysing the needs of the victims. This study fills those gaps in social big data literature.
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Telecoms Ministers get ready for 1992. An important step towards the Common Market of 1992 was taken last summer by the Council of Telecommunications Ministers, the first formal…
Abstract
Telecoms Ministers get ready for 1992. An important step towards the Common Market of 1992 was taken last summer by the Council of Telecommunications Ministers, the first formal council devoted to the telecommunications sector since the creation of the European Community. Meeting in Luxembourg, the Ministers gave strong support to the major policy objectives set out in the EC's Green Paper on the telecommunications industry and then added further objectives of their own that could have an immediate impact on European citizens and telecommunications organisations.
Tech aide to Romania Sighisoara, Romania, could become a hub of information for doctors and fanners all over Romania. A state‐of‐the‐art computing laboratory is being built there…
Abstract
Tech aide to Romania Sighisoara, Romania, could become a hub of information for doctors and fanners all over Romania. A state‐of‐the‐art computing laboratory is being built there which, when finished, will house some 20 CD‐ROM drives and a library of databases on health, agriculture and nutrition. Because the laboratory is centrally located information will be disseminated from there to the rest of the country.
Vera M. Novak, Nieves Fernandez-Anez and Koichiro Shiraishi
Planning for the future can become mired in fixing the problems of the present. To create alternative solutions, planning must break free of the boundaries and assumptions of…
Abstract
Purpose
Planning for the future can become mired in fixing the problems of the present. To create alternative solutions, planning must break free of the boundaries and assumptions of existing paradigms. The purpose of this paper is to explore an alternative way of thinking that reframes the issues from problems of “what is” to the potential of “what could be” in the context of socio-ecological resilience.
Design/methodology/approach
A case study reviews the limitations revealed during a traditional problem-solving exercise on the topic of Coastal Eco-Cities, as well as the innovations resulting from the rethinking of the issues through the lens of the alternative paradigm.
Findings
A key finding is the significance of linguistic modality, shifting from objective expressions to subjective dialogue.
Originality/value
The originality of this approach is the emphasis on the framing of the problem before the development of the solution and the methodological implications of this early dialogue.
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Afzal Mohammad Khaled and Yong Jin Kim
Logistical facility location decisions can make a crucial difference in the success or failure of a company. Geographical Information Systems (GIS) have recently become a very…
Abstract
Logistical facility location decisions can make a crucial difference in the success or failure of a company. Geographical Information Systems (GIS) have recently become a very popular decision support system to help deal with facility location problems. However, until recently, GIS methodologies have not been fully embraced as a way to deal with new facility location problems in business logistics. This research makes a framework for categorizing empirical facility location problems based on the intensity of the involvement of GIS methodologies in decision making. This framework was built by analyzing facility location models and GIS methodologies. The research results revealed the depth of the embracement of GIS methodologies in logistics for determining new facility location decisions. In the new facility location decisions, spatial data inputs are almost always coupled with the visualization of the problems and solutions. However, the usage of GIS capability solely (i.e. suitability analysis) for problem solving has not been embraced at the same level. In most cases, the suitability analysis is used together with special optimization models for choosing among the multiple alternatives.
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