scholarly journals Collecting Built Environment Information Using UAVs: Time and Applicability in Building Inspection Activities

2020 ◽  
Vol 12 (11) ◽  
pp. 4731
Author(s):  
Rachele Grosso ◽  
Umberto Mecca ◽  
Giuseppe Moglia ◽  
Francesco Prizzon ◽  
Manuela Rebaudengo
Keyword(s):  
Built Environment ◽  
Unmanned Aerial Vehicles ◽  
Industrial Sector ◽  
Construction Sector ◽  
Costs And Benefits ◽  
Aerial Vehicles ◽  
Ex Post ◽  
Ex Ante ◽  
Way Of Thinking

The Italian way of thinking about maintenance is too often one-sided. Indeed, it is considered not so much as a useful practice to prevent the occurrence of a fault (ex ante), but as an intervention to solve it (ex post). Analyzing the legislation relating to the construction sector, it can be seen that it does not clearly define the responsibilities, timescales and methods in which maintenance interventions must be planned and carried out. For this reason, this practice is still very weak compared, for example, to the industrial sector, where it is an established practice. Currently, the complexity of reading the maintenance plans drawn up by designers and the considerable costs associated with maintenance operations discourage owners and managers from even carrying out preliminary inspection operations. This research aims to stimulate these stakeholders to carry out inspection operations regularly, highlighting their costs and benefits. In particular, working on a case study in Piedmont, the costs of visual inspections carried out in the traditional way are compared with those that would be incurred if unmanned aerial vehicles (UAVs) were used. Finally, the collateral benefits of inspections carried out with UAVs are highlighted.

Revealing Safety Risks of Unmanned Aerial Vehicles in Construction

2021 ◽  
pp. 036119812110171
Author(s):  
Mostafa Namian ◽  
Mohammad Khalid ◽  
George Wang ◽  
Yelda Turkan
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Construction Projects ◽  
The United States ◽  
Extensive Literature ◽  
Effective Strategies ◽  
Aerial Vehicles ◽  
Safety Risks ◽  
Potential Safety ◽  
Post Hoc

Unmanned aerial vehicles (UAVs) have gained their prevalent recognition in construction because of their exceptional advantages. Despite the increasing use of UAVs in the industry and their remarkable benefits, there are serious potential safety risks associated that have been overlooked. Construction is one of the most hazardous industries in the United States. In addition to the ordinary hazards normally present in dynamic construction workplaces, UAVs can expose workers to a wider range of never-before-seen safety risks that must be recognized and controlled. The industry is not equipped with safety measures to prevent potential accidents, because of scarce research on drone-associated hazards and risks. The aim of this research was to (1) identify the UAV-associated hazards in construction that may expose personnel and property to potential harms, and (2) study the relative impact of each hazard and the associated safety risks. In Phase I, the researchers conducted an extensive literature review and consulted with a construction UAV expert. In Phase II, the researchers obtained data from 54 construction experts validating and evaluating the identified hazards and risks. The results revealed that adopting UAVs can expose construction projects to a variety of hazards that the industry is not familiar with. “Collision with properties,”“collision with humans,” and “distraction” were identified as the top three safety risks. Moreover, the study introduces effective strategies, such as having qualified crew members, proper drone model selection, and drone maintenance, to mitigate the safety risks. Finally, a post-hoc case study was investigated and presented in this article.

New Solutions and Methodologies for Data Acquisition and Management in Small Municipalities

2021 ◽  
pp. 103-123
Author(s):  
Rui Pedro Juliao ◽  
Amilton Amorim ◽  
João Paulo Hespanha ◽  
Guilherme Henrique Barros de Souza ◽  
Ronaldo Celso Messias Correia ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Unmanned Aerial Vehicles ◽  
Spatial Data ◽  
Domain Model ◽  
Territorial Development ◽  
Paulo State ◽  
Land Administration ◽  
Aerial Vehicles ◽  
Data Infrastructures

Promoting and managing sustainable territorial development require adequate tools that enable territorial managers to formulate appropriate choices. Technological solutions have emerged, and the paradigm has shifted from isolated GIS to a more collaborative production and dissemination of geographic data using spatial data infrastructures (SDI). A critical dataset for municipal land administration is cadastre. ISO 19152 standard of the Land Administration Domain Model (LADM) was published in 2012. Also, technology evolution, namely unmanned aerial vehicles (UAV), has changed data acquisition for cadastre. These are three pillars of modern territorial management: openness, co-production, and data sharing (SDI); models (LADM); affordable technology (UAV). This chapter presents how municipalities can develop an SDI project, incorporating LADM guidelines and UAV data acquisition. The case study is based on a group of 32 small municipalities from São Paulo state, in Brazil, known as UNIPONTAL.

Preventing Crime Waves

2010 ◽  
Vol 2 (3) ◽  
pp. 138-159 ◽  
Author(s):  
Philip Bond ◽  
Kathleen Hagerty
Keyword(s):  
Multiple Equilibria ◽  
Costs And Benefits ◽  
Net Benefit ◽  
Ex Post ◽  
Ex Ante ◽  
Crime Wave ◽  
Enforcement Mechanisms

We study the design of enforcement mechanisms when enforcement resources are chosen ex ante and are inelastic ex post. Multiple equilibria arise naturally. We identify a new answer to the old question of why non-maximal penalties are used to punish moderate actions: “marginal” penalties are much more attractive in the Pareto inferior crime wave equilibrium. Specifically, although marginal penalties have both costs and benefits, the net benefit is strictly positive in the crime wave equilibrium. In contrast, marginal penalties frequently have a net cost in the noncrime wave equilibrium. We also show that increasing enforcement resources may worsen crime. (JEL D82, K42)

Design of Hospital Delivery Networks Using Unmanned Aerial Vehicles

2020 ◽  
Vol 2674 (5) ◽  
pp. 405-418 ◽  
Author(s):  
Alejandra Otero Arenzana ◽  
Jose Javier Escribano Macias ◽  
Panagiotis Angeloudis
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Optimal Number ◽  
Baseline Scenario ◽  
Urban Hospital ◽  
Aerial Vehicles ◽  
Strategic Model ◽  
Delivery Services ◽  
Location Algorithm ◽  
Delivery Networks

Unmanned aerial vehicles (UAVs) are being increasingly implemented in a range of applications. Their low payload capacity and ability to overcome congested road networks enables them to provide fast delivery services for urgent high-value low-volume cargo. This work investigates the economic viability of integrating UAVs into urban hospital supply chains. In doing so, a strategic model that determines the optimal configuration of supporting infrastructure for urgent UAV delivery between hospitals is proposed. The model incorporates a tailored facility location algorithm that selects an optimal number of hubs given a set of candidates and determines the number of UAVs required to fulfill total demand. The objective is to minimize the total cost of implementation, computed as the sum of generalized, battery, vehicle, and hub establishment costs. The model is applied to a case study based on the establishment of a UAV delivery network for deliveries between National Health Service (NHS) hospitals in London. A baseline scenario is also developed using current NHS vehicles for delivery. Results demonstrate that UAV-based delivery provides significant reductions in operational costs compared with the baseline. Furthermore, the analysis indicates the location of hubs is more significant to the solution optimality than any increase in range or payload.

The Cost of Local Government Structural Reorganisation in Great Britain during the 1990s

10.1068/c0063 ◽  
2002 ◽  
Vol 20 (2) ◽  
pp. 251-262 ◽  
Author(s):  
Michael Chisholm
Keyword(s):  
Structural Change ◽  
Great Britain ◽  
Local Government ◽  
Costs And Benefits ◽  
Transition Costs ◽  
Ex Post ◽  
Ex Ante ◽  
The Government ◽  
The Cost ◽  
Official Data

When the structure of local government in Great Britain was reorganised during the 1990s, considerable emphasis was placed by the government on the financial savings which would accrue to offset the costs incurred in making the changes. Previous work examined these expectations and found clear evidence that the ex ante estimates of transition costs given to the Westminster parliament were serious underestimates, and that the expected savings had not, at that time, materialised. This work was done at a time when it was known that some of the official data on transition costs would not be complete until after the close of the 2000/01 financial year. The author's primary purpose is to place on record what may be regarded as the final estimates of the transition costs in England, Scotland, and Wales. In addition, comparisons between the ex ante estimates of the costs of structural change and the ex post evidence concerning actual costs are updated. The discrepancy between these is such as to confirm the need for some form of independent scrutiny of new legislation at the time when it is being considered in parliament, to ensure that decisions are taken in the light of realistic assessments of the costs and benefits of proposed enactments.

Visual Inspection of Historical Buildings Using Unmanned Aerial Vehicles (UAV): A Case Study of Sultan Abu Bakar Mosque, Johor

2016 ◽  
Vol 22 (9) ◽  
pp. 2160-2163 ◽  
Author(s):  
Masiri Kaamin ◽  
Misbahul Muneer Abd Rahman ◽  
Norhayati Ngadiman ◽  
Aslila Abd Kadir ◽  
Ahmad Hakimi Mat Nor ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Visual Inspection ◽  
Historical Buildings ◽  
Aerial Vehicles
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