Dynamic Origin-Destination Demand Estimation Using Turning Movement Counts

2008 ◽  
Vol 2085 (1) ◽  
pp. 39-48 ◽  
Author(s):  
Hamed Alibabai ◽  
Hani S. Mahmassani
Keyword(s):  
A Priori ◽  
Demand Estimation ◽  
Estimation Model ◽  
Interactive Approach ◽  
The Us ◽  
Level Problem ◽  
Upper Level ◽  
The One ◽  
Dependent Demand

A dynamic origin-destination (O-D) demand estimation model is presented that uses turning movement counts as observations. Based on an iterative bilevel estimation framework, the upper-level problem is to minimize a weighted objective function of the deviation between simulated link flows and real-time link counts and the deviation between estimated time-dependent demand and an a priori historical O-D table, where the weighting value is determined by an interactive approach to obtain the best compromise solution. A case study was performed on the US-29 network in Maryland to compare the estimated tables of this approach with the one obtained from the traditional method, which uses only approach link volume counts. The application illustrates considerable benefits of using turning movements instead of approach volumes in matching observed counts.

Dynamic Origin-Destination Demand Estimation with Multiday Link Traffic Counts for Planning Applications

2003 ◽  
Vol 1831 (1) ◽  
pp. 30-38 ◽  
Author(s):  
Xuesong Zhou ◽  
Xiao Qin ◽  
Hani S. Mahmassani
Keyword(s):  
Real Time ◽  
Demand Estimation ◽  
Test Bed ◽  
Estimation Model ◽  
Interactive Approach ◽  
Traffic Demand ◽  
Level Problem ◽  
Upper Level ◽  
Demand Patterns

A dynamic origin–destination demand estimation model for planning applications with real-time link counts from multiple days is presented. Based on an iterative bilevel estimation framework, the upper-level problem is to minimize both the deviation between estimated link flows and real-time link counts and the deviation between estimated time-dependent demand and given historical static demand. These two types of deviations are combined into a weighted objective function, where the weighting value is determined by an interactive approach to obtain the best compromise solution. The single-day formulation is further extended to use link counts from multiple days to estimate the variation in traffic demand over multiple days. A case study based on the Irvine test bed network is conducted to illustrate the methodology and estimate day-to-day demand patterns. The application illustrates considerable benefits in analyzing the demand dynamics with multiday data.

scholarly journals Integrated Planning: Towards a Mutually Inclusive Approach to Infrastructure Planning and Design

Land ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1282
Author(s):  
Dario Hernan Schoulund ◽  
Carlos Alberto Amura ◽  
Karina Landman
Keyword(s):  
Urban Design ◽  
A Priori ◽  
Public Spaces ◽  
Regulatory Policies ◽  
Planning And Design ◽  
Inclusive Approach ◽  
Planning Processes ◽  
Urban Issues ◽  
The One

Increasingly independent fields of specialization, civil engineering, and urban design find themselves practicing in isolation on the same urban issues. The result surfaces on the relative qualities of public spaces: projects that are functionally successful but spatially poor, and vice versa This is critical in the global south, where infrastructure is prioritized, and politicized, as the key driver of change but often heedless of spatial consequences. The present study explores the dynamics of integration between logics arising from technical and spatial fields, and the planning processes under which such integration is feasible. An urban design/infrastructural project in Argentina, stalled for more than two decades under regulatory policies, was selected as a case study. An overview and background of the adopted planning/design methodologies are followed by a structural/spatial analysis, focusing on type, logistics, and construction on the one hand, and on indicators of successful public spaces on the other: access, uses, comfort and image. Aspects that a priori appeared as inevitable compromises found a common, but the critically logical ground in which urban and structural thinking complemented each other. More than a functional asset, infrastructure presents an opportunity to re-think the future of the built environment as a typology that could be conceived, designed and evaluated, on the same terms as successful public spaces.

scholarly journals Del turismo inmobiliario al turismo de naturaleza. ¿Cambio de modelo o cambio de discurso? El caso de Noja, un municipio en la costa cantábrica

2019 ◽  
pp. 301-324
Author(s):  
Carmen Gil de Arriba
Keyword(s):  
Real Estate ◽  
A Priori ◽  
Geographical Location ◽  
Major Change ◽  
Mediterranean Coast ◽  
The North ◽  
Protected Natural Area ◽  
The One ◽  
High Level

En este artículo se aborda un tipo de relaciones que, a priori, parecen difíciles de conciliar, las que se plantean entre el llamado turismo residencial (denominación bajo la que a menudo se esconden los intereses del sector inmobiliario) y el turismo de naturaleza en espacios litorales. Tras un encuadre de la problemática, hemos optado por un caso de estudio que reúne buena parte de los rasgos que definen este tipo de espacios turísticos: por un lado, fuerte crecimiento inmobiliario, expansión urbana, alto nivel de permisibilidad urbanística y escasa adecuación del modelo a las condiciones ambientales; por otro, entorno de elevado valor ecológico y declaración como espacio natural protegido. Además, este caso de estudio tiene también cualidades específicas o distintivas, entre las que se encuentra su localización en la costa cantábrica, donde estos procesos han sido menos estudiados que en el Mediterráneo, y su proximidad al área metropolitana de Bilbao que ejerce como centro urbano de influencia. A partir del repaso de todas estas características, analizamos si la puesta en valor turístico de un espacio protegido supone un cambio real del modelo residencial e inmobiliario seguido hasta ahora o simplemente la adaptación a unas nuevas condiciones de mercado. This article studies a relationship, which a priori appears incompatible, between so called residential tourism (a name under which real estate interests lie) and tourism related to nature in coastal areas. After establishing a theoretical and methodological framework, a case study is analysed: the municipality of Noja in the North of Spain. This case combines most of the features that define this area type. On the one hand, strong real estate growth, a high level of urban sprawl and speculation, and limited control and adjustment of the model to environmental conditions. On the other hand, it is an ecologically valuable, protected, natural area. Moreover, this particular case study has specific or distinctive qualities, such as a geographical location on the Cantabrian coast where few studies have been carried out, unlike the Mediterranean coast, and proximity to the influential metropolitan area of Bilbao. Following a review of all of the above characteristics, we analyse whether the implementation of tourist values in a protected space represents a major change in the residential and real estate model pursued to date or whether these changes are just a gradual adjustment to new market conditions.

DIRECT MACROECONOMIC LINKS BETWEEN SELECTED EAST ASIAN ECONOMIES AND THE US? AN EMPIRICAL ANALYSIS

2012 ◽  
Vol 57 (03) ◽  
pp. 1250019 ◽  
Author(s):  
EU CHYE TAN
Keyword(s):  
Gross Domestic Product ◽  
Empirical Evidence ◽  
Economic Crisis ◽  
Causal Relation ◽  
A Priori ◽  
East Asian ◽  
The Other ◽  
The Us ◽  
The One ◽  
East Asian Economies

This paper attempts to establish whether there exists any direct macroeconomic linkages between some East Asian (EA) countries on the one hand and the US on the other hand, based upon quarterly real gross domestic product (GDP) series spanning from the early 1990s. Cointegration, Granger causal relations and contemporaneous correlations of output shocks are explored. Contrary to a priori expectations, the empirical evidence suggests no direct linkages of these economies to the US, with the exception of the Malaysian economy. In the case of Malaysia, only a Granger causal relation from the US is found. All this would allude to the ability of these EA economies save one to grow independently of the US, barring a global economic crisis such as the recent one triggered off by sub-prime loans.

Reframing Arabic narratives on Daesh [ISIS] textually through translation: MEMRI’s translation as a case study

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Nael F. M. Hijjo ◽  
Ali Almanna
Keyword(s):  
Civil War ◽  
Middle East ◽  
The Other ◽  
The Public ◽  
The Us ◽  
English Translations ◽  
Media Research ◽  
Original Narrative ◽  
The One

Abstract Many an ethically minded translator would think twice or thrice prior to translating an ideologically loaded text as they need to reflect the encoded ideologies of the original narrative in the target narrative. Yet, some translators decide, for different reasons, to undermine and challenge the narratives in question, thus applying various reframing strategies to superimpose certain directionality on the original narratives. This paper, therefore, examines the English translations of the Arabic editorials on Daesh (ISIS), published by the Washington-based Middle East Media Research Institute (MEMRI) that has a large impact on the US policy and the public. In this paper, we explain how media translation contributes to (re)framing the current civil war in Syria on the one hand, and how this promotes the narrative of ‘Arab and Muslim terrorists’ on the other. The study finds that by relying on the narrativity feature of selective appropriation, MEMRI extensively employs the textual reframing tools, i.e., addition and omission, thus promoting different narratives of the civil war. We propose that rival narratives could be circulated through translation where the translators reframe the original narratives and reconstruct the embedded narrativity features that, in turn, renegotiate the original arguments.

A CASE STUDY OF NL INFLUENCE IN UNIS FKIP ENGLISH DEPARTMENT STUDENTS' INTERLANGUAGE

2018 ◽  
Vol 18 (1) ◽  
pp. 46-54
Author(s):  
Irmala Sukendra ◽  
Agus Mulyana ◽  
Imam Sudarmaji
Keyword(s):  
Second Language ◽  
Second Language Acquisition ◽  
Native Speakers ◽  
Communicative Competence ◽  
Mother Tongue ◽  
Universal Grammar ◽  
Similar System ◽  
The One ◽  
L1 Acquisition

Regardless to the facts that English is being taught to Indonesian students starting from early age, many Indonesian thrive in learning English. They find it quite troublesome for some to acquire the language especially to the level of communicative competence. Although Krashen (1982:10) states that “language acquirers are not usually aware of the fact that they are acquiring language, but are only aware of the fact that they are using the language for communication”, second language acquisition has several obstacles for learners to face and yet the successfulness of mastering the language never surmounts to the one of the native speakers. Learners have never been able to acquire the language as any native speakers do. Mistakes are made and inter-language is unavoidable. McNeili in Ellis (1985, p. 44) mentions that “the mentalist views of L1 acquisition hypothesizes the process of acquisition consists of hypothesis-testing, by which means the grammar of the learner’s mother tongue is related to the principles of the ‘universal grammar’.” Thus this study intends to find out whether the students go through the phase of interlanguage in their attempt to acquire second language and whether their interlanguage forms similar system as postulated by linguists (Krashen).

Interrelationships between municipal spatial policy strategy and airport operation and development. Lodz Airport case study

2018 ◽  
Vol 59 (1) ◽  
pp. 65-79
Author(s):  
Katarzyna Nikorowicz-Zatorska
Keyword(s):  
Land Use ◽  
Urban Planning ◽  
Cultural Development ◽  
The Other ◽  
Local Authorities ◽  
Spatial Management ◽  
The One ◽  
Surrounding Areas

Abstract The present paper focuses on spatial management regulations in order to carry out investment in the field of airport facilities. The construction, upgrades, and maintenance of airports falls within the area of responsibility of local authorities. This task poses a great challenge in terms of organisation and finances. On the one hand, an active airport is a municipal landmark and drives local economic, social and cultural development, and on the other, the scale of investment often exceeds the capabilities of local authorities. The immediate environment of the airport determines its final use and prosperity. The objective of the paper is to review legislation that affects airports and the surrounding communities. The process of urban planning in Lodz and surrounding areas will be presented as a background to the problem of land use management in the vicinity of the airport. This paper seeks to address the following questions: if and how airports have affected urban planning in Lodz, does the land use around the airport prevent the development of Lodz Airport, and how has the situation changed over the time? It can be assumed that as a result of lack of experience, land resources and size of investments on one hand and legislative dissonance and peculiar practices on the other, aviation infrastructure in Lodz is designed to meet temporary needs and is characterised by achieving short-term goals. Cyclical problems are solved in an intermittent manner and involve all the municipal resources, so there’s little left to secure long-term investments.

De la gestión local a la gobernanza global: actores e interacciones multiniveles en la gestión del agua en la ciudad de México

2011 ◽  
Vol 1 (3) ◽  
pp. 34-66
Author(s):  
Joyce Valdovinos
Keyword(s):  
Private Sector ◽  
Water Governance ◽  
The State ◽  
Public Authorities ◽  
Service Contracts ◽  
Governance Model ◽  
Role Of The State ◽  
The One

The provision of water services has traditionally been considered a responsibility of the state. During the late 1980s, the private sector emerged as a key actor in the provision of public services. Mexico City was no exception to this trend and public authorities awarded service contracts to four private consortia in 1993. Through consideration of this case study, two main questions arise: First, why do public authorities establish partnerships with the private sector? Second, what are the implications of these partnerships for water governance? This article focuses, on the one hand, on the conceptual debate of water as a public and/or private good, while identifying new trends and strategies carried out by private operators. On the other hand, it analyzes the role of the state and its relationships with other actors through a governance model characterized by partnerships and multilevel networks.Spanish La provisión del servicio del agua ha sido tradicionalmente considerada como una responsabilidad del Estado. A finales de la década de 1980, el sector privado emerge como un actor clave en el suministro de servicios públicos. La ciudad de México no escapa a esta tendencia y en 1993 las autoridades públicas firman contratos de servicios con cuatro consorcios privados. A través de este estudio de caso, dos preguntas son planteadas: ¿Por qué las autoridades públicas establecen partenariados con el sector privado? ¿Cuáles son las implicaciones de dichos partenariados en la gobernanza del agua? Este artículo aborda por una parte, el debate conceptual del agua como bien público y/o privado, identificando nuevas tendencias y estrategias de los operadores privados. Por otra parte, se analizan el rol y las relaciones del Estado con otros actores a través de un modelo de gobernanza, definido en términos de partenariados y redes multi-niveles.French Les services de l'eau ont été traditionnellement considérés comme une responsabilité de l'État. À la fin des années 1980, le secteur privé est apparu comme un acteur clé dans la fourniture de certains services publics. La ville de Mexico n'a pas échappé à cette tendance et en 1993, les autorités publiques ont signé des contrats de services avec quatre consortiums privés. À travers cette étude de cas, nous nous interrogerons sur deux aspects : pourquoi les autorités publiques établissentelles des partenariats avec le secteur privé ? Quelles sont les implications de ces partenariats sur la gouvernance de l'eau ? Cet article s'intéresse, d'une part, au débat conceptuel sur l'eau en tant que bien public et/ou privé, en identifiant les tendances nouvelles et les stratégies menées par les opérateurs privés. D'autre part y sont analysés le rôle de l'État et ses relations avec d'autres acteurs à travers un modèle de gouvernance, défini en termes de partenariats, et des réseaux multi-niveaux.

Paranasal Sinus Mucocele Clinical, imagistic and biochemical aspects

2018 ◽  
Vol 69 (8) ◽  
Author(s):  
Doina Vesa ◽  
Cristian Martu ◽  
Razvan Leata ◽  
Ludmila Lozneanu ◽  
luminita Radulescu ◽  
...  
Keyword(s):  
Facial Asymmetry ◽  
Retrospective Case ◽  
Mri Scans ◽  
The One ◽  
Ethmoid Sinuses ◽  
Retrospective Case Study ◽  
Cellular Components ◽  
Ct And Mri

Paranasal mucoceles are a type of cysts that evolve slowly and are asymptomatic; this poses a difficulty in diagnosing the patient because the symptoms can go unnoticed. The mucocele evolves unpredictably. On the one hand, it can become infected turning into pyoceles and on the other hand, it can invade important regions such as the orbital, cranial or genian regions, creating facial asymmetry. This is a retrospective case study of 37 patients diagnosed with sinus mucoceles, followed up by clinical examination and paraclinical tests such as CT and MRI scans. The biochemical components of the liquid from within the mucocele were analyzed and the following criteria were recorded: NaCl-, Cl-, Na+ and cholesterine as well as cellular components such as mastocytes, macrophages, hematocytes and leucocytes. In all cases, the treatment option was surgery with favorable post-operative and follow-up evaluation. The mucoceles that appeared post-operatively (maxillary and ethmoid sinuses) evolved more rapidly than the mucoceles that were induced byan external injury. Longer follow-up of operated patients permitted a more timely diagnosis of recurrences.

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