scholarly journals Relining of pipe systems: conditions, benefits and application through case-study

2017 ◽  
Vol 19 (1) ◽  
pp. 7-14
Author(s):  
Victor Vladimirov ◽  
Thomas Simoner ◽  
Ioan Bica
Keyword(s):  
Urban Agglomerations ◽  
Pipe System ◽  
Diameter Pipe ◽  
Pipe Systems ◽  
The City

Abstract Relining is one of the best alternatives available today for pipe system rehabilitation. This trenchless solution is particularly interesting for urban agglomerations, as a smaller diameter pipe is pushed or pulled through the old pipeline. Relining creates a leak-tight “pipe within a pipe” system, which is as good as new in both structural and hydraulic terms. Relining can be performed with both circular and special, non-circular (NC) profiles. The latter is especially advantageous for the rehabilitation of old sewers, many of which were constructed in a variety of ovoid-like shapes. This paper presents the typical steps that are performed for pipeline rehabilitation with non-circular profiles, as well as an applied case study (a project implemented in the city of Würzburg in Germany).

scholarly journals Spatial Network Structures of Urban Agglomeration Based on the Improved Gravity Model: A Case Study in China’s Two Urban Agglomerations

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Yubo Zhao ◽  
Gui Zhang ◽  
Hongwei Zhao
Keyword(s):  
Gravity Model ◽  
Yangtze River Delta ◽  
Urban Agglomeration ◽  
Spatial Distance ◽  
Range Limit ◽  
Population Mobility ◽  
Urban Agglomerations ◽  
City Network ◽  
The City

Research on urban agglomerations from the perspective of network spatial structure is important to promote their sustainable development. Based on online and traditional data, this paper first improves three aspects of the traditional spatial gravity model—city quality, the gravitation coefficient, and city distance—considering urban center functional intensity and population mobility tendencies. The resulting improved directional gravity model is applied to analyze the structure of the city network for two urban agglomerations in China, the Beijing-Tianjin-Hebei urban agglomeration (BTHUA) and the Yangtze River Delta urban agglomeration (YRDUA). The results of the study are as follows: (1) the existing urban connections have obvious hierarchies and imbalances, with the YRDUA urban hierarchical connections being of larger scale. (2) Cities are closely connected, but city networks are unbalanced, though the YRDUA has more balanced urban development. (3) Each node city has a clear radiation range limit, and spatial distance remains an important constraint on urban connections. The backbone network of the BTHUA has a triangular shape and trends toward a “sparse north and dense south,” while the YRDUA is characterized by multiple axes and an overall distribution that trends toward a “dense north and sparse south.” (4) Cities with poor comprehensive strength are more likely to be captured, forming an attract and be attracted relationship. (5) The BTHUA and the YRDUA each form three communities.

scholarly journals THE INFLUENCE OF LIFESTYLE AND POPULARITY ON BUYING DECISION AND BRAND EXPERIENCE VARIO MOTORCYCLE (CASE STUDY OF THE VILLAGE TEMBILAHAN KOTA KECAMATAN TEMBILAHAN DISTRICT INDRAGIRI DOWN)

2020 ◽  
Vol 1 (1) ◽  
pp. 23-29
Author(s):  
Firmansyah Firmansyah
Keyword(s):  
Automotive Industry ◽  
Indirect Effect ◽  
Large Diameter ◽  
Brand Experience ◽  
Purchasing Decisions ◽  
Significant Development ◽  
Diameter Pipe ◽  
The Village ◽  
The City

The development of the industrial world, especially the automotive industry in Indonesia, has experienced quite a significant development, this is indicated by the number of requests which each year increases, in line with the needs and demands of the community for adequate transportation facilities. Indonesian people, especially in the city of Tembilahan, are now more fond of automatic motorbikes than the duck type. The type of duck motorbike is a type of small motorcycle that is built on a frame which mostly consists of a large diameter pipe. There are several factors that researchers see that occur in the field, especially in purchasing products, namely the lifestyle in the environment and the existing popularity. The results of the study: Lifestyle has no effect on purchasing decisions with. Popularity influences purchasing decisions Lifestyle and popularity influence purchasing decisions as a whole. And the path analysis obtained an indirect effect of lifestyle on brand experience through purchasing decisions, namely -, 125%, while the indirect effect of popularity on brand experience through purchasing decisions is 7.14%.

Diagnosis of pipe systems by the SLE: first results

2013 ◽  
Vol 13 (4) ◽  
pp. 958-965 ◽  
Author(s):  
Christian Massari ◽  
Tian-Chyi J. Yeh ◽  
Marco Ferrante ◽  
Bruno Brunone ◽  
Silvia Meniconi
Keyword(s):  
Linear Estimator ◽  
Groundwater Hydrology ◽  
Theoretical Formulation ◽  
Pipe System ◽  
System Diagnosis ◽  
First Results ◽  
Unbiased Estimates ◽  
Pipe Systems ◽  
Numerical Case Study

In this study, an algorithm is presented for pipe system diagnosis. The algorithm is the Successive Linear Estimator (SLE) previously used in groundwater hydrology to estimate the hydraulic proprieties of soils. The SLE is an iterative cokriging-like technique which provides statistically the best unbiased estimates and quantifies the associated uncertainty. In this paper the algorithm has been extended to the pipe system diagnosis to infer leak areas, status of valves and partial blockage location and extent. We first present the theoretical formulation of the algorithm and then test it by a numerical case study.

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.

Analysis of geodetic and legal documentation in the process of expropriation for roads. Krakow case study

2013 ◽  
Vol 62 (1) ◽  
pp. 67-84
Author(s):  
Anna Trembecka
Keyword(s):  
Local Government ◽  
Legal Status ◽  
The State ◽  
Property Value ◽  
Real Property ◽  
Construction Design ◽  
Special Rules ◽  
The City

Abstract Amendment to the Act on special rules of preparation and implementation of investment in public roads resulted in an accelerated mode of acquisition of land for the development of roads. The decision to authorize the execution of road investment issued on its basis has several effects, i.e. determines the location of a road, approves surveying division, approves construction design and also results in acquisition of a real property by virtue of law by the State Treasury or local government unit, among others. The conducted study revealed that over 3 years, in this mode, the city of Krakow has acquired 31 hectares of land intended for the implementation of road investments. Compensation is determined in separate proceedings based on an appraisal study estimating property value, often at a distant time after the loss of land by the owner. One reason for the lengthy compensation proceedings is challenging the proposed amount of compensation, unregulated legal status of the property as well as imprecise legislation. It is important to properly develop geodetic and legal documentation which accompanies the application for issuance of the decision and is also used in compensation proceedings.

Navigating Ethnic Hierarchies in Community-Academic Partnerships: A Case Study on Koreatown Community Politics

2019 ◽  
Vol 16 (1-2) ◽  
pp. 153-179
Author(s):  
Angie Chung ◽  
Johng Song ◽  
Carolyn Choi
Keyword(s):  
Executive Director ◽  
Urban Redevelopment ◽  
Pacific Rim ◽  
Ethnic Communities ◽  
Power Structures ◽  
The Pacific ◽  
Academic Partnerships ◽  
Communities Of Interest ◽  
The City

Based on the experiences of a Koreatown scholar, the executive director of a Koreatown nonprofit, and a longtime resident student, the article advocates for greater attention to the complex and dynamic power structures of ethnic enclaves in community-academic partnerships. We discuss the changing landscapes of Koreatown as the global nexus of the Pacific Rim economy, the city of Los Angeles’s urban redevelopment plans, and growing diversity and inequality. Programs that aim to engage effectively with ethnic communities must reassess how knowledge is produced and conveyed, how we structure partnerships within stratified communities, and how to grow from issue-based partnerships to broader communities of interest.

EXPLORING EX-ANTE IMPACTS AND SOCIAL AND SPORTIVE CHALLENGES OF HOSTING A FUTURE NEW INTERNATIONAL MAJOR EVENT: A CASE STUDY OF THE WORLD ROLLER GAMES IN BARCELONA

2020 ◽  
Author(s):  
Albert Saló ◽  
Laia López
Keyword(s):  
Social Economic ◽  
Research Question ◽  
City Image ◽  
Local Council ◽  
The World ◽  
Future Consequences ◽  
Mega Event ◽  
The City ◽  
The Postponement

Research Question: This analysis arises from the decision of the current local council of Barcelona regarding the postponement of the sporting mega-event ‘World Roller Games’, due to a lack of a social and sportive implication in this event. This research tries to shed some light on the matter and give evidence to the local council to become the world capital of skating. The research question is to analyse whether non-economic impacts could be relevant enough to organise a mega-event.Research Methods: The methodology is based on the perception and experience of spectators and participants on four main impacts (social, economic, sports city image and sports practice) using a survey from a National Roller Skating Championship in Spain, considering that this profile of respondents have a better knowledge of the current situation of this sport.Results and Findings: There are positive expected future consequences of this mega-event to be held in Barcelona in social and sportive terms. We can also conclude that the local council must still introduce some social and sportive policies in the city in order to improve the chances of success in social, sports practice and sportive brand image development.Implications: It is demonstrated that a mega-event should not be seen purely from a perspective of business generation, especially with minority sports like roller skating. There is a clear opportunity to develop social and sportive practice initiatives that can push social cohesion throughout the city thanks to a mega-event such as this one.

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