4466 research outputs found
Sort by
MPTCP Congestion Control Algorithms for Streaming Applications – Performance Evaluation in Public Networks
No full textEfficient data transfer for high-quality streaming requires fast
speed, low latency, and stable transmission parameters. Utilizing multiple
communication paths is a promising solution for improving performance.
This paper evaluates the most common MPTCP congestion control algorithms
in the context of streaming applications in the open Internet. The
results show that the BALIA algorithm is the most effective CC algorithm
for multi-path streaming. This algorithm achieves the lowest path delay and
Head-of-Line blocking degree with consistent throughput. Conversely, the
MPTCP CC algorithm wVegas exhibits the weakest performance
Peculiarities and Pathways of Single-Family Housing Development in Russian Major Cities
No full textSingle-family housing typology in Russian cities is usually seen as an inefficient use of land – the need for redevelopment and diversification of such territories is discussed. Despite similar urban form parameters, the areas of single-family housing can be differentiated depending on their location in the spatial city structure, distance from the centers of commercial activity, functional diversity, and mix with other housing typologies. Using methods of spatial and document analysis (land use and legal zoning regulations) I study various scenarios for the transformation of such territories in major Russian cities aiming at developing a sustainable decision-making process regarding residential development. The research shows that the revolutionary way of development of such territories is gaining prominence, where the low-scale built environment is substituted with high-rise buildings without the necessary infrastructure, and middle-rise housing typologies being not represented in the urban fabric. According to the results of land use analysis, it was revealed that in Russian major cities the share of territories occupied by single-family housing reaches 50%, somewhere reaching 70%. Meanwhile, existing approaches to the regulation of these territories lack a vision of how the urban environment should develop and undervalue the effects of existing transformation scenarios
Text-to-music Models and Their Evaluation Methods
No full textText-to-music models are a very recent approach to generative
music, allowing to generate music based on an abstract, rich description input
in natural language. In this paper, we propose guidelines for evaluation
in text-to-music models, highlighting the need for musical insight and clear
descriptions of perceptual quality upon investigating the metrics of currently
developed approaches. We also present a critical analysis of the capabilities
and evaluation methods of the pioneering text-to-music models
Learning Non-Differentiable Graphs of Utility AI
No full textUtility AI is an approach to modelling AI players in computer
games. Its structure is a graph that computes the utility values of possible actions
and chooses the one with the highest value. Currently, such graphs are
created by experts manually. This paper presents the first attempts to create
them automatically – through learning from data. The problem is similar to
training neural networks except that the utility graphs are non-differentiable
and contain various types of nodes (more complex than neurons). We present
the most promising methods, preliminary experiments and results
Research on Climate Adaptation of Bayu Traditional Settlements
No full textThe form deeply affects the use of mountain topography and wind environment in the Bayu region are complex and diverse, and the spatial forms of traditional settlements are unique and rich. Studying their spatial patterns and mechanisms which adapt to the local climate will help to explore theories and methods of climate adaptability with low regional energy consumption. Taking 18 national historical and cultural towns in the Bayu region as examples, this paper uses historical documents and remote sensing information, integrates GIS morphological analysis, wind field simulation and actual measurement to analyze the correlation between the mountain terrain, the wind and the form of landscape pattern, street structure and building layout. The result shows that Bayu ancient towns are preferentially located in the flat dam area of hilly Valley or well-ventilated trough (gorge) Valley, and avoid the mountain top and low-lying calm wind area with violent air flow change. They often face the water and sit with their back against mountains, so they could avoid the chilly wind in winter and introduce cool wind in summer. The street is parallel to or forms an included angle of less than 30 degrees on the side of the dominant wind direction in summer, and is perpendicular to or forms an included angle of more than 60 degrees on the side of the dominant wind direction in winter. The Polyline branched or compound street form are flexible. With the cooperation of cascading architectures, the streets can well adapt to different terrains and the prevailing wind directions in summer and winter to form a suitable microclimate.Synergy and integrity are the key points of climate adaptability for the traditional settlement, and also the key to the protection and inheritance of traditional settlements
From street network topology to generic accessibility indices: Supraposition of Graph theory measures on morphological localities
No full textSpatial analysis of street network accessibility has been widely utilised by academics and urban designers. However, when assessing the overall accessibility performance of larger morphologically consistent units – the urban localities – the results articulated on the street network are potentially problematic to interpret and generalize. This paper presents an innovative approach to the synthesis of various street network accessibility measures in the form of generic accessibility indices projected to various morphological localities. It determines a method specifically suitable for Prague urban tissues and it further explores the possible application of these indices in urban design and planning.
Its objectives are (1) to identify and describe the spatial accessibility of public space and morphological characteristics of street spaces using network analysis; (2) to establish and assess accessibility indices for morphologically distinctive localities; (3) to examine the correlation between the accessibility indices of individual localities and their time of origin, providing valuable insight into the process of city evolution. The configurative analysis is carried out on a detailed street network within the administrative borders of Prague. Accessibility variables are then superposed on existing morphological localities delimited accordingly to the Conzenian tradition of urban morphology. Methods stemming from system ecology and descriptive statistics are utilised to provide control over the aggregation of the original variables into the generic accessibility indices while preserving sufficient descriptiveness. The results provide a valuable reference for various accessibility indices evaluation options in relation to the choice of statistical calculation and variables
Exploring the Effects of Tourism on Fringe Belt Areas: The Case of Antalya, Turkey
No full textIt is inevitable for cities to change their conditions over time and to undergo physical changes depending on new development decisions. Tourism activity is one of the important factors in the development of the city and the effect of tourism activities on urban development in the Antalya region which has been chosen as the study area, is observed. Antalya, which is a port city in the southern region of Turkey, still retains the combined traces of Romans and Turks. The first settlement in Antalya started in the Old Town which is inside the city walls, and it did not change for many years and went through serious changes after 1980 due to tourism investments and decisions. Fringe belt areas have been seen as planning areas as a result of rapid development and the need for new tourism areas, and fringe belt areas have undergone characteristic changes. In this study, plan analysis has been made by examining the master development plans of Antalya in different years from the 1920 Scarpa map of Antalya to the 2021 satellite image and it is aimed to contribute to the literature by analyzing the changing nature of the urban fringe belts in the touristic-historical city
Urban projects in Casablanca: New Urban forms in experimentation
No full textCasablanca, the economic capital of the country, is a city where several urban forms coexist. Casablanca has
specificities compared to other cities in Morocco, but like many of them, this metropolis has varied urban forms that bear
witness to the economic, social, and urban history of the city. These urban forms, including the old medieval core ‘Medina’,
the city center, the new medina ‘Habous’ and the worker housing estates of colonial heritage, as well as the modern urban
cores resulting from post-protectorate regulatory town planning, are the result of the successive transformations of the city.
The city of Casablanca is currently experiencing an urban development marked by the emergence of major urban projects to
international standards which mark the transition from purely regulatory urban planning to operational town planning. These
urban projects produce new urban forms that are part of a ‘dense and varied city’ approach. This approach advocates
a typological diversity that is combined with a great diversity of urban and architectural quality. These new urban morphologies
are new tools for urban planning, health-friendly urban planning, and climate change urban planning. This communication
deals with the evolution of the urbanization modes of the city of Casablanca and highlights the different characteristics and
contributions of these new urban forms experimented in Casablanca, through the case study of the urban renewal of Casa Anfa
Research on the Configuration of Supporting Facilities based on the Perspective of Living Circle – A Case Study of Wujiang District, Suzhou, China
No full textSince 2018, China has changed the classification standards for residential areas. Residential areas are classified according to how residents can meet basic living needs within a reasonable walking distance. The paper combs the grading control scale of residential areas and the corresponding relationship with public service facilities. This paper is based on the Urban Residential District Planning and Design Standard implemented in 2018 and a residential area in Wujiang District, Suzhou city, China, taking a 5-minute living circle as an example. This paper analyzes the problems and causes of public service facilities in five-minute living circle, such as imperfect supporting facilities and unreasonable layout. It provides reference for subsequent planning and setting of public service facilities and approval of residential areas by relevant administrative departments
