scholarly journals Incident Signal Power Comparison for Localization of Concurrent Multiple Acoustic Sources

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Daniele Salvati ◽  
Sergio Canazza
Keyword(s):  
Open Space ◽  
Traditional Approach ◽  
Microphone Array ◽  
Measurement Techniques ◽  
Signal Power ◽  
Noisy Environment ◽  
Multiple Sources ◽  
Power Comparison ◽  
Open Spaces ◽  
Acoustic Sources

In this paper, a method to solve the localization of concurrent multiple acoustic sources in large open spaces is presented. The problem of the multisource localization in far-field conditions is to correctly associate the direction of arrival (DOA) estimated by a network array system to the same source. The use of systems implementing a Bayesian filter is a traditional approach to address the problem of localization in multisource acoustic scenario. However, in a real noisy open space the acoustic sources are often discontinuous with numerous short-duration events and thus the filtering methods may have difficulty to track the multiple sources. Incident signal power comparison (ISPC) is proposed to compute DOAs association. ISPC is based on identifying the incident signal power (ISP) of the sources on a microphone array using beamforming methods and comparing the ISP between different arrays using spectral distance (SD) measurement techniques. This method solves the ambiguities, due to the presence of simultaneous sources, by identifying sounds through a minimization of an error criterion on SD measures of DOA combinations. The experimental results were conducted in an outdoor real noisy environment and the ISPC performance is reported using different beamforming techniques and SD functions.

scholarly journals An evaluation of urban open spaces in Historical City Center of Konya in the context of pedestrian mobility

2018 ◽  
Vol 15 (4) ◽  
pp. 1827 ◽  
Author(s):  
Bilgehan Yılmaz Çakmak ◽  
Mehmet Topçu
Keyword(s):  
Land Use ◽  
Open Space ◽  
Measurement Techniques ◽  
Research Problem ◽  
Primary Data ◽  
City Center ◽  
Open Spaces ◽  
Urban Open Space ◽  
Holistic Perception ◽  
The City

Cities are organisms that live in a balance of continuity with the structures they possess and the urban open spaces that connect them. For this organism, staying alive and healthy is possible if urban dwellers, who are the users, utilize the spaces in a manner that preserves their integrity and locate each space in mental perception. Research problem/aim; Squares, which are one of the urban open spaces, are the breathing centers of the city that play important roles in maintaining this integrity. This study aims to test the relation of squares and pedestrian movement for each square and for the whole historical city. Method; In the present study examining the squares and their relationships in the historical city center of Konya province, 7 squares that have a semantic relationship resulting from being located on a specific axis with one another were analyzed with respect to pedestrian use and the respective physical characteristics of the squares. The main criteria defined in the study constitute the 3 steps of the method. These were identified as function-diversity, accessibility-form and livability–identity. Analyses were conducted based on the 3 established criteria and the 7 sub-criteria that measure the relationships among these at certain levels. Each analysis constitutes a step of the method and enables to achieve a result by using different measurement techniques. In the context of the analyses and findings, qualitative and quantitative studies such as a questionnaire study, land use, dominant land use, function diversity, global and local accessibility, form and geometry, urban open space and symbolic elements analyses were conducted for each square. Findings, Conclusions; As a result of this study carried out with the aim of reinforcing urban continuity and enhancing the relationship among squares, the primary data for each square were obtained and suggestions were presented for eliminating the deficiencies. With the implementation of these suggestions, the holistic perception of the squares, which are focal points located within the historical city center, will be stronger and these squares will have more enhanced functional and semantic connections with one another. In this way, significant contributions will be made regarding the users’ getting to know the city center, the use of squares for different needs and the protection of the integrity of the historical city center with regard to cultural identity.   

ANALISIS PENGARUH PEMBANGUNAN JALAN LAYANG JANTI TERHADAP PERKEMBANGAN TATA RUANG KAWASAN JANTI STUDI KASUS : KAWASAN JANTI, DESA CATURTUNGGAL, KABUPATEN SLEMAN, D. I. YOGYAKARTA

2017 ◽  
Vol 11 (3) ◽  
pp. 255
Author(s):  
Jeky El Boru
Keyword(s):  
Road Network ◽  
Open Space ◽  
Qualitative Description ◽  
Analysis Method ◽  
Open Spaces ◽  
The Road ◽  
Before And After ◽  
Linkage Method ◽  
The Impact ◽  
Parking Place

Abstract: This research aims to analyze the impact of Janti Flyover Construction toward the growth of layout at Janti Urban Area, including structured space, open space, and linkage. Method used for data collecting are observation, air photograph monitoring, and interview, whereas the analysis method is qualitative description, which is the superimposed method of two layers, that are the layout condition before and after flyover construction. The result shows that the impact of Janti Flyover construction can be seen on building mass (solid), the increasing number of open spaces, including the road network, parking place, and park, whereas the relation between spaces, visually and structurally, can be seen on the growth of buildings which have new shapes and styles, therefore the performance of the overall building does not have a proportional shape. Considering Janti Street at the collective relation, its role is getting stronger as the main frame road network.Keywords: Flyover construction, layout changing, Janti AreaAbstrak: Penelitian ini bertujuan untuk menganalisis pengaruh pembangunan Jalan Layang Janti terhadap perkembangan tata ruang Kawasan Janti, meliputi ruang terbangun, ruang terbuka, serta hubungan antar ruang (“linkage”). Metode pengumpulan data dilakukan melalui observasi, pengamatan foto udara, dan wawancara; sedangkan metode analisis melalui deskripsi secara kualitatif yang berupa “superimposed method” dari dua lapisan kondisi lahan, yakni kondisi tata ruang sebelum dan sesudah pembangunan jalan layang. Hasil penelitian menunjukkan bahwa pengaruh pembangunan Jalan Layang Janti terdapat pada massa bangunan (“solid”), pertambahan ruang terbuka yang berupa jaringan jalan, parkir, dan taman; sedangkan pada hubungan antar ruang ̶ secara visual dan struktural ̶ yakni tumbuhnya bangunan dengan bentuk dan gaya baru, sehingga bentuk tampilan bangunan secara keseluruhan tidak proporsional. Pada hubungan kolektif, Jalan Janti semakin kuat perannya sebagai kerangka utama jaringan jalan.Kata kunci : Pembangunan jalan layang, tata ruang, Kawasan Janti

scholarly journals Social Evaluation of Public Open Space Services and Their Impact on Well-Being: A Micro-Scale Assessment from a Coastal University

2021 ◽  
Vol 13 (8) ◽  
pp. 4372
Author(s):  
Abdullah Addas ◽  
Ahmad Maghrabi
Keyword(s):  
Open Space ◽  
Environmental Changes ◽  
Positive Impact ◽  
Well Being ◽  
Social Evaluation ◽  
Open Spaces ◽  
Rapid Urbanization ◽  
Public Open Space ◽  
The Impact ◽  
Public Open Spaces

Public open spaces services have been shown to be profoundly affected by rapid urbanization and environmental changes, and in turn, they have influenced socio-cultural relationships and human well-being. However, the impact of these changes on public open space services (POSS) remains unexplored, particularly in the Saudi Arabian context. This study examines the socio-cultural influence of POSS on the King Abdulaziz University campus, Jeddah, Saudi Arabia and the impact of these services on well-being. A field survey and questionnaire were used to collect data. Non-parametric tests (Kruskal–Wallis and Mann–Whitney tests) were used to find significant differences in the importance of POSS as perceived by stakeholders based on socio-demographic attributes. Factor analysis was performed for 14 POSS to identify those that are most important. The study showed that (i) university stakeholders are closely linked to services provided by public open spaces (POS) and dependent on POSS, (ii) there were significant differences in the perceived importance of POSS according to gender, age, and social groups, and (iii) 70 to 90% of stakeholders reported POSS as having a positive impact on well-being. Thus, the findings will help design and plan POSS to meet the needs of society and promote well-being.

scholarly journals Cloud Computation Using High-Resolution Images for Improving the SDG Indicator on Open Spaces

2020 ◽  
Vol 12 (7) ◽  
pp. 1144
Author(s):  
Rosa Aguilar ◽  
Monika Kuffer
Keyword(s):  
High Resolution ◽  
Open Space ◽  
Local Planning ◽  
Open Spaces ◽  
High Resolution Imagery ◽  
Coarse Spatial Resolution ◽  
Multi Temporal ◽  
High Resolution Images ◽  
Cloud Computation

Open spaces are essential for promoting quality of life in cities. However, accelerated urban growth, in particular in cities of the global South, is reducing the often already limited amount of open spaces with access to citizens. The importance of open spaces is promoted by SDG indicator 11.7.1; however, data on this indicator are not readily available, neither globally nor at the metropolitan scale in support of local planning, health and environmental policies. Existing global datasets on built-up areas omit many open spaces due to the coarse spatial resolution of input imagery. Our study presents a novel cloud computation-based method to map open spaces by accessing the multi-temporal high-resolution imagery repository of Planet. We illustrate the benefits of our proposed method for mapping the dynamics and spatial patterns of open spaces for the city of Kampala, Uganda, achieving a classification accuracy of up to 88% for classes used by the Global Human Settlement Layer (GHSL). Results show that open spaces in the Kampala metropolitan area are continuously decreasing, resulting in a loss of open space per capita of approximately 125 m2 within eight years.

Implementation of Open Space: The Need for Uniform Policy?

2014 ◽  
Vol 39 (1) ◽  
pp. 82-91
Author(s):  
Melasutra Md Dali ◽  
Safiah Muhammad Yusoff ◽  
Puteri Haryati Ibrahim
Keyword(s):  
Open Space ◽  
Peninsular Malaysia ◽  
Space Policy ◽  
Local Planning ◽  
Open Spaces ◽  
Local Authorities ◽  
Planning Profession ◽  
Federal Department ◽  
The Government ◽  
Uniform Policy

The provision of open spaces within a residential development is often seen as unimportant. The Malaysian Government targeted to provide 2 hectares of open space per 1000 population to be achieved as a developed nation status by the year 2020. This vision can be seen as the Government attempt to ensure the sustainability of open spaces in Malaysia. The Federal Department of Town and Country Planning, Peninsular Malaysia (FDTCP) has produced a planning standard guideline to supervise the implementation of the open space policy in Malaysia. According to FDTCP; until December 2009, Malaysia has achieved a percentage of 1.19 hectares of open space per 1000 population. Achieving the standard requires commitment of local authorities to implement the open space policy. However, the adoption of open spaces policy differs among local authorities, from a simplistic general approach of land ratio techniques to an ergonomics method. The paper examines the local allocation practices using 5 different approaches and it argues that implementation of open space by local planning practices requires the knowledge of and understanding by planning profession towards a long term sustainable green objectives.

scholarly journals Neighbourhood open spaces for social cohesion

2020 ◽  
Vol 170 ◽  
pp. 06019
Author(s):  
Rukhsana Badar ◽  
Sarika Bahadure
Keyword(s):  
Social Relations ◽  
Social Cohesion ◽  
Open Space ◽  
Social Activity ◽  
Social Infrastructure ◽  
Open Spaces ◽  
Unitary Theory ◽  
The Social ◽  
Neighbourhood Level ◽  
The City

The global cities of the world are witnessing a visible disconnection of everyday life. In India the Smart City guidelines acknowledge the need to counter the growing social detachment and intolerance by encouraging interactions. They go further in identifying that preserving and creating of open spaces must be a key feature of comprehensive urban development. Most social relations are cemented within open spaces at the neighbourhood level. Previous studies examine the association between the attributes of neighbourhood open spaces and social activity but neglect to view the issue comprehensively. The present study turns to Lefebvre’s Unitary Theory which states that open space is a result of three forces; 1) perceived space which is the physical dimension and material quality identifiable by the senses; 2) conceived space created by planners and other agents as plans and documents; and 3) lived space which is shaped by the values attached and images generated through user experience. For open space conducive to social interactions these three aspects must work in tandem. With this consideration a framework of criteria and indicators is developed and used to measure and compare the open spaces in select neighbourhoods in Europe and India. The investigation thus reveals differences in all three aspects of neighbourhood spaces. It also reveals a discrepancy between the planning standards formulated and employed by the city authorities in providing the spaces and the actual needs of the community. The research aims to address this gap. The study of the Indian cases lays foundation for the use of the framework to measure open spaces in association with social cohesion and thereby contribute to the enhancement of the social infrastructure of the City.

scholarly journals Restructuring the Out Door Spaces of Selected Public Buildings to Enhance User Satisfaction in Abuja

2020 ◽  
Vol 4 (1) ◽  
Keyword(s):  
User Satisfaction ◽  
Quantitative Research ◽  
Open Space ◽  
Well Being ◽  
Outdoor Environment ◽  
Physical Factors ◽  
Research Approach ◽  
Public Buildings ◽  
Open Spaces ◽  
Outdoor Spaces

The use of outdoor (open) spaces in public buildings is vast and has significant roles ranging from individual (users) perception of the development of urban centers and cities to the satisfaction of the various functions they perform. However, little research is available on the use of the outdoor spaces in these Public buildings environment and the activities that take place thereof. This study investigates the factors that take users of public buildings to the outdoor environment and the physical factors that constitute their uses within the spaces. Using both qualitative and quantitative research approach, the paper examined the importance of restructuring the outdoor spaces for quality of the surrounding of the built environment. The study adopts a purposive sampling where participants were selected based on the outdoor use only. A total of seventy (75) questionnaires were administered to the various users of public buildings within specific open spaces. Only seventy (70) representing (93.33%) of the total population were returned and subjected to data analysis using the relevant descriptive and inferential statistical techniques, Mean Weighted Score (MWS) and Relatively Important Index (R.I.I) were used to rank features obtained. The study concludes that proper restructuring of landscape elements is necessary within public buildings, in order to provide human comfort, well-being and improved productivity. It was recommended that revitalizing the environmental features of these public building necessitates the insufficiency of outdoor features in government own buildings. Therefore, the user’s satisfaction of this outdoor (open) space in public buildings should be key consideration and emphasized on right from planning and design stages to it implementation.

scholarly journals HUMAN INTERACTION IN URBAN SPACES: A QUANTITATIVE ANALYSIS IN URBAN PARK, SHAH ALAM CITY, SELANGOR

2017 ◽  
Vol 16 (6) ◽  
Author(s):  
Filzani Illia Ibrahim ◽  
Dasimah Omar ◽  
Nik Hanita Nik Mohamad
Keyword(s):  
Open Space ◽  
Human Interaction ◽  
Urban Spaces ◽  
Primary Data ◽  
Valuable Insight ◽  
Mixed Method Research ◽  
Public Parks ◽  
Open Spaces ◽  
Human Needs ◽  
Quantitative And Qualitative Methods

This paper aims to provide valuable insight of the various dimensions of human needs’ towards open spaces. This study employed a mixed method research design involving both quantitative and qualitative methods that were utilised to identify and evaluate the human-human interaction and human-nature interaction in the area of study. Primary data was gathered by using questionnaire survey that was administered to 861 respondents who were visitors to public parks. The finding of this study is intended to show the main domains that reflect human needs’ toward open spaces together with perceived benefits to the open space users.

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