scholarly journals Evaluation of dominant momentum transfer mechanisms across a part of the city of Abu Dhabi

2017 ◽  
Vol 143 ◽  
pp. 526-531
Author(s):  
Nicolas Ramirez ◽  
Afshin Afshari
Keyword(s):  
Momentum Transfer ◽  
Abu Dhabi ◽  
The City ◽  
Transfer Mechanisms

Bridging the Gap between Expectation and Reality: Urban Planning and the Public Bus System in Abu Dhabi

2020 ◽  
Vol 54 (1) ◽  
pp. 129-130
Author(s):  
Seunga Iris Ryu
Keyword(s):  
Urban Planning ◽  
Urban Transportation ◽  
Urban Infrastructure ◽  
Abu Dhabi ◽  
Working Population ◽  
The Public ◽  
City Bus ◽  
The Government ◽  
The City ◽  
Bus System

In urban planning, governments usually hold the decision-making power to shape not only city landscapes but also people's lives with the promoted goals of social welfare. Although states expect their own version of ideal scenarios in mind when carrying out infrastructural developments, after competition, people in reality have their own ways of perceiving and utilizing state-made infrastructures and urban transportation, sometimes in alignment with government plan, and sometimes at odds with it. Abu Dhabi is one of the cities in the world in which the government planned out the whole city and created urban infrastructure from scratch, including the city bus system. Although the Abu Dhabi public buses started operating in 2008, car dependency is still high and many residents consider public buses to be inefficient and time consuming and only used by certain immigrant working population.

scholarly journals A Study of Local Climate Zones in Abu Dhabi with Urban Weather Stations and Numerical Simulations

2019 ◽  
Vol 12 (1) ◽  
pp. 156 ◽  
Author(s):  
Prajowal Manandhar ◽  
Lindita Bande ◽  
Alexandros Tsoupos ◽  
Prashanth Reddy Marpu ◽  
Peter Armstrong
Keyword(s):  
Numerical Simulations ◽  
Abu Dhabi ◽  
Thermal Dynamics ◽  
Climate Zones ◽  
Local Climate ◽  
Heat Flows ◽  
Local Climate Zones ◽  
Urban Heat ◽  
Landsat Satellite ◽  
The City

In many cities that have experienced rapid growth like Abu Dhabi, urban microclimate scenarios evolve rapidly as well and it is important to study the urban thermal dynamics continuously. The Local Climate Zone (LCZ) classification considers factors related to the physical properties like surface cover and surface structure of the city which allow to analyze urban heat flows. Abu Dhabi city is rapidly expanding and is characterized by highly heterogeneous types of built forms that comprise mainly of old mid-rise and modern high-rise buildings with varied degrees of vegetation cover in different parts of the city. The fact that it is a coastal city in a desert environment makes it quite unique. This paper presents an approach of studying urban heat flows in such heterogeneous setup. First, the city is classified into local climate zones using images acquired by Landsat Satellite. Numerical simulations are performed in the designated LCZs using a computational fluid dynamics software, Envi-met. The results of Envi-met are calibrated and validated using in-situ measurements across all four seasons. The calibrated models are then applied to study entire Abu Dhabi island across different seasons. The results indicate a clear presence of urban heat island (UHI) effect when averaged over the full day which is varying in different zones. The zones with high vegetation do not show large average UHI effect whereas the effect is significant in densely built zones. The study also validates previous observations on the inversion of UHI effect during the day and in terms of diurnal response.

On the Use of Differing Money Transmission Methods by Mexican Immigrants

2005 ◽  
Vol 39 (3) ◽  
pp. 554-576 ◽  
Author(s):  
Catalina Amuedo-Dorantes ◽  
Susan Pozo
Keyword(s):  
United States ◽  
Educational Attainment ◽  
Mexican Immigrants ◽  
The United States ◽  
Specific Task ◽  
Government Officials ◽  
Regular Employment ◽  
Money Transfer ◽  
The City ◽  
Transfer Mechanisms

Interest in the factors shaping migrants' use of a given money transmittal method has recently intensified following researchers' agreement on the often inadequate infrastructure surrounding remittances transfers. This concern has also captured the attention of government officials, who appear more eager to promote more efficient and safe transfers of emigrant's earnings given the potential that remittances hold for increasing resources at the disposal of receiving nations. This study uses data from Mexican immigrants who have resided in the United States to examine the various factors that shape migrants' use of the various methods to remit earnings to Mexico. We find, not surprisingly, that accessibility factors play a key role in explaining migrants' use of the various money-transfer mechanisms. Migrants are less likely to use banks and more likely to use nonbank money-transmitting services when they lack immigration documents. Additionally, migrants' awareness of alternative remitting methods, either through educational attainment, skill level, or networks of friends and family in the city to which they migrated, makes them more likely to use banks relative to the more expensive nonbank money-transmitting mechanisms. In contrast, the use of informal money transfer mechanisms (cash in the mail and hand-carried transfers) is more likely among workers with “less regular” employment – such as self-employed and specific-task workers, more newly arrived migrants, and migrants remitting to rural and poorer areas.

LNA losses may lead to violence elsewhere in Libya

2020 ◽  
Keyword(s):  
Balance Of Power ◽  
Abu Dhabi ◽  
The West ◽  
Content Type ◽  
The City

Significance This is the latest offensive after a series of wins by GNA-aligned groups in western Libya, repelling Haftar’s offensive to take control of the capital, Tripoli and the whole country. Turkey’s official intervention in the conflict since December 2019 in support of the GNA has now fundamentally shifted the balance of power. Impacts Haftar's losses could endanger his position with his external allies in Abu Dhabi and Cairo. The threat of mass reprisals by GNA-aligned forces will make Tarhuna groups fight fiercely -- even if the LNA withdraws from the city. If the GNA eliminates the LNA’s threat in the west, it may look to retake control of the oil crescent.

scholarly journals Validation of UWG and ENVI-Met Models in an Abu Dhabi District, Based on Site Measurements

2019 ◽  
Vol 11 (16) ◽  
pp. 4378 ◽  
Author(s):  
Lindita Bande ◽  
Afshin Afshari ◽  
Dina Al Masri ◽  
Mukesh Jha ◽  
Leslie Norford ◽  
...  
Keyword(s):  
Energy Demand ◽  
Mesoscale Model ◽  
Winter Season ◽  
Weather Generator ◽  
Anthropogenic Heat ◽  
Abu Dhabi ◽  
Seasonal Effect ◽  
The Impact ◽  
Urban Weather ◽  
The City

The city of Abu Dhabi is growing every year in population, urban extent and energy demand. This research focuses on the application of two simulation programs to estimate changes in urban climate associated with continued development in Abu Dhabi: The Urban Weather Generator (UWG) and ENVI-met. Simulation with these two software packages are validated with the site data measured in downtown Abu Dhabi. A comparison analysis (in the different seasons) between the rural data, the simulation output, and the site measurements shows the variations of the UHI in this Middle Eastern city and the potential of the validated tools. The main aims of this study are: (a) to make a seasonal validation of the UWG for the city of Abu Dhabi (referring to urban-rural available data). The tool was previously validated for a year (no seasonal division) for Abu Dhabi, Toulouse, Basel, Singapore, Rome and Barcelona. The simulations are based on the 2016 version of the Urban Weather Generator. The analysis is separated into three main seasons (instead of the full year): winter, spring, summer. (b) To make a seasonal validation and improve the second tool evaluated in this study, ENVI-met 4.0. The software can simulate urban temperature, humidity and wind speed. Guides are proposed for the enhancement of the accuracy of both estimation procedures. Referring to the results, UWG tends to overestimate the canyon temperature during the summer and has a more realistic estimation on the winter season. ENVI-met has better estimations of temperatures during the summer season compared to UWG. Finally, the UWG weather file contributes a more detailed energy model on a mesoscale model. It considers the seasonal effect and shows the impact of the climate on profiling the UHI phenomena. ENVI-met needs improvement in calculating the anthropogenic heat and in calculation of the mean radiant temperature.

Slip and momentum transfer mechanisms mediated by Janus rods at polymer interfaces

Soft Matter ◽  
2020 ◽  
Vol 16 (28) ◽  
pp. 6662-6672 ◽  
Author(s):  
Felipe L. Paiva ◽  
Argimiro R. Secchi ◽  
Verônica Calado ◽  
João Maia ◽  
Shaghayegh Khani
Keyword(s):  
Momentum Transfer ◽  
Polymer Interfaces ◽  
Transfer Mechanisms

Janus rods interfacially grafted with longer polymers penetrate homopolymer phases and yield less effective momentum transfer across the interface.

The nature of parental involvement in the city of Abu Dhabi in a context of change

2014 ◽  
Vol 7 (4) ◽  
pp. 186-200 ◽  
Author(s):  
Fiona S. Baker ◽  
Rida Blaik Hourani
Keyword(s):  
Parent Involvement ◽  
Parental Involvement ◽  
School Administrator ◽  
Abu Dhabi ◽  
Policy Framework ◽  
Content Type ◽  
Roles And Responsibilities ◽  
The City ◽  
Purposive Sample ◽  
Practical Implications

Purpose – The purpose of this exploratory study is to explore parent and school administrator perspectives on the value and nature of parent involvement in the city of Abu Dhabi through their perceptions of roles and responsibilities. Design/methodology/approach – The study is conducted in a random purposive sample of Public–Private Partnership schools during Abu Dhabi Education Council’s school reform. Findings – Findings show that while both administrators and parents agree on the value of parental involvement, the perceptions of their own and each others’ roles and responsibilities means that parent involvement is characterized by unfulfilled expectations. Practical implications – Recommendations are made to arrive at realistic roles and responsibilities for parent involvement and recommendations for a model of mutually responsive practice to evolve within a policy framework, with the support of ADEC, and informed by international and locally based research. Originality/value – The paper sheds light on a new educational dimension beyond curricula and instruction.

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