scholarly journals Detecting industry clusters from the bottom up based on co-location patterns mining: A case study in Dongguan, China

2021 ◽  
pp. 239980832199154
Author(s):  
Zihui Liu ◽  
Xinyue Chen ◽  
Weipan Xu ◽  
Yimin Chen ◽  
Xun Li
Keyword(s):  
A Priori ◽  
Information Communication ◽  
Industry Clusters ◽  
Industry Cluster ◽  
Bottom Up ◽  
Technology Industry ◽  
Location Patterns ◽  
Sporting Goods ◽  
The City

Industry cluster development is important to stimulate regional economy. Conventional spatial methods for detecting industry clusters use a pairwise manner to infer the co-location relationships of multiple industrial types or instances, which increases the difficulty of interpreting the results. This study proposes to use co-location patterns (CPs) mining method to directly capture the co-location of multiple industrial types from the bottom up without any conditions of data relations defined a priori. The method is applied in Dongguan, China, to investigate the industry cluster patterns at an intra-urban scale. At the city level, the results show prevalent CPs of information communication and technology industry and other associated sectors. At the sub-regional level, however, approximately 41% of the industrial CPs are different from those obtained at the city level. The local features of sub-regional industry clusters are associated with productions of, for instance, sporting goods and toys, digital instrument and office equipment, machine parts and woodware, and textile-related products.

scholarly journals An Optimal-Control Scheme for Coordinated Surplus-Heat Exchange in Industry Clusters

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1877 ◽  
Author(s):  
Brage Rugstad Knudsen ◽  
Hanne Kauko ◽  
Trond Andresen
Keyword(s):  
Optimal Control ◽  
Heat Exchange ◽  
Industrial Clusters ◽  
Industry Clusters ◽  
Industry Cluster ◽  
Heat Demand ◽  
Control Scheme ◽  
Optimal Control Scheme ◽  
And Control

Industrial plants organized in clusters may improve their economics and energy efficiency by exchanging and utilizing surplus heat. However, integrating inherently dynamic processes and highly time-varying surplus-heat supplies and demands is challenging. To this end, a structured optimization and control framework may significantly improve inter-plant surplus-heat valorization. We present a Modelica-based systems model and optimal-control scheme for surplus-heat exchange in industrial clusters. An industry-cluster operator is assumed to coordinate and control the surplus-heat exchange infrastructure and responsible for handling the surplus heat and satisfy the sink plants’ heat demands. As a case study, we use an industry cluster consisting of two plants with surplus heat available and two plants with heat demand. The total surplus heat and heat demand are equal, but the availability and demand are highly asynchronous. By optimally utilizing demand predictions and a thermal energy storage (TES) unit, the operator is able to supply more than 98% of the deficit heat as surplus heat from the plants in the industry cluster, while only 77% in a corresponding case without TES. We argue that the proposed framework and case study illustrates a direction for increasing inter-plant surplus-heat utilization in industry clusters with reduced use of peak heating, often associated with high costs or emissions.

scholarly journals Possibilities of Controlling the River Outlets by Weirs on the Example of Noteć Bystra River

2020 ◽  
Vol 12 (6) ◽  
pp. 2369
Author(s):  
Joanna Wicher-Dysarz ◽  
Ewelina Szałkiewicz ◽  
Joanna Jaskuła ◽  
Tomasz Dysarz ◽  
Maksymilian Rybacki
Keyword(s):  
Flood Hazard ◽  
A Priori ◽  
Effective Control ◽  
Flood Wave ◽  
Extreme Hazards ◽  
Longitudinal Profiles ◽  
Maximum Flows ◽  
The City ◽  
Flood Waves

The possibility of effective control of selected dams in the Noteć Bystra river is analyzed. Such a control is expected to permit inundation of selected arable areas, e.g., peat grasslands, to avoid flooding of the city of Czarnków and the terrains located downstream. The chosen case study is the reach of the Noteć River between the dams Pianowka–Mikolajewo–Rosko. The analysis was made on the basis of simulations of the flow and regulation of dams in flood conditions. The flow peaks of hypothetical flood waves were designed according to the directions of the ISOK project (Informatyczny System Osłony Kraju przed nadzwyczajnymi zagrożeniami—IT System of the Country’s Protection Against Extreme Hazards) as the maximum flows over 10-years (p = 10%), 100-years (p = 1%), and 500-years (p = 0.2%). The obtained results are presented as longitudinal profiles of the water surface, maps of inundated areas and maps of inundated soils. The main conclusion is that the robust control of dams reduces the peak of flow during flood wave propagation and forces inundation of the a priori selected areas. It helps to decrease the spatial range of the flood hazard and significantly reduces risk related to floods.

scholarly journals Bottom-up Urban Regeneration and Vacant Buildings: A Framework to understand how Empty Properties can be Strategically Embedded in Bottom-up Projects

2021 ◽  
Vol 7 (1) ◽  
pp. 36-58
Author(s):  
Alberto Squizzato
Keyword(s):  
Multiple Case Study ◽  
Urban Regeneration ◽  
Study Analysis ◽  
Regeneration Strategy ◽  
Bottom Up ◽  
Case Study Analysis ◽  
Multiple Case ◽  
Urban Issues ◽  
The City

The bottom-up projects, in the years after the Great Crisis, have been considered as a popular measure to solve urban issues, overcoming the conditions of austerity faced by public actors. However, these initiatives not only seem confined to solve very specific issues but are often linked to a more comprehensive urban regeneration strategy, thus capable of addressing the economic, social and physical aspects of a wider part of the city. This article presents the first findings of wider research, which analyses the link between bottom-up practices and the concept of urban regeneration. In particular, this article focuses on an element that appears to be fundamental for the development of these bottom-up urban regeneration practices: the presence of vacant buildings available for the reuse. This article suggests the possibility to analyse how vacant buildings are embedded in these practices through three steps, called steps for the regeneration through the reuse of vacant buildings (SteRVs), namely Recognition, Appropriation and Design. The validity of the three phases is demonstrated through a multiple case study analysis, that considers two renowned bottom-up urban regeneration cases developed in Europe mainly after 2000: Farm Cultural Park, in Favara (Italy) and NDSM wharf, in Amsterdam.

Globalization from the Bottom Up: Irvine, California, and the Birth of Suburban Cosmopolitanism

2012 ◽  
Vol 81 (1) ◽  
pp. 60-91
Author(s):  
William Benjamin Piggot
Keyword(s):  
Capital Flows ◽  
Knowledge Economy ◽  
Corporate Investment ◽  
Bottom Up ◽  
Grass Roots ◽  
Asian Immigration ◽  
Post Industrial ◽  
The City

Using the city of Irvine, California, as its case study, this article connects modern globalization to the rise of a post-industrial knowledge economy, demonstrating how immigration and transnational capital flows have worked to transform metropolitan America, particularly in western states like California. In the Irvine context, Asian immigration and Asian corporate investment were particularly important in transforming the city's institutional and commercial life. Yet Irvine's Asians were not the only important transformative agents. The community's white residents were just as instrumental, facilitating and generally embracing the changes the Asian newcomers brought. The article thus demonstrates that the contemporary era of globalization has been directed and given its meaning at a localized, grass-roots level as much as it has been by national and international elites.

Study of Interior Materials as Passive Fire Protection in Karaoke Building (Case Study: Masterpiece Signature Family KTV Medan)

2020 ◽  
Vol 4 (1) ◽  
pp. 30-43
Author(s):  
Saras Ayu Faradita ◽  
Vinky Rahman
Keyword(s):  
Fire Protection ◽  
Analytical Hierarchy Process ◽  
Passive Protection ◽  
Fire Incident ◽  
Fire Disaster ◽  
Passive Fire Protection ◽  
Protection Systems ◽  
Hierarchy Process ◽  
The City

The fire incident in karaoke buildings in Indonesia which claimed many lives has occurred several times. According to the National Academy of Science US, the smoke toxins that come out of the fire disaster cause 50-80% of deaths. Refers to the data, it is necessary to check further about the building material response to fire during a fire incident. Masterpiece Signature Karaoke is a karaoke building that classified as large and magnificent in the city of Medan which has various material so that it is necessary to study the interior material as passive fire protection. The purpose is to find out how to assess the reliability of fire passive protection regard to the interior materials and recommendations or descriptions of right interior material planning using the Analytical Hierarchy Process (AHP). This method is efficacious to solve the problem of reliability in using interior materials as passive fire protection in Masterpiece Signature Family KTV Medan building with the results of an Adequate Level of reliability. Then, design recommendations were given for the use of interior materials in karaoke building to improve the reliability results to be better.The results are useful as information for other researchers and karaoke buildings regarding passive fire protection systems at the Masterpiece Signature Family KTV Medan.

Emplacing Berlin: Digital Itineraries and Short-term Study Abroad in the City

2018 ◽  
Vol 12 (1) ◽  
pp. 26-36 ◽  
Author(s):  
Richard B. Apgar
Keyword(s):  
Study Abroad ◽  
Urban Landscape ◽  
Physical Space ◽  
Short Term ◽  
Study Abroad Programs ◽  
Term Study ◽  
Digital Maps ◽  
Short Term Study ◽  
The City

As destination of choice for many short-term study abroad programs, Berlin offers students of German language, culture and history a number of sites richly layered with significance. The complexities of these sites and the competing narratives that surround them are difficult for students to grasp in a condensed period of time. Using approaches from the spatial humanities, this article offers a case study for enhancing student learning through the creation of digital maps and itineraries in a campus-based course for subsequent use during a three-week program in Berlin. In particular, the concept of deep mapping is discussed as a means of augmenting understanding of the city and its history from a narrative across time to a narrative across the physical space of the city. As itineraries, these course-based projects were replicated on site. In moving from the digital environment to the urban landscape, this article concludes by noting meanings uncovered and narratives formed as we moved through the physical space of the city.

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