The analysis of variability of pavement indicators: MPD, SMTD and IRI. A case study of Portugal roads

Freitas, Elisabete F.; Freitas, Carina; Braga, Ana Cristina

doi:10.1080/10298436.2013.807343

Cited by 15 publications

(4 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Afterward, the analysis of variance (ANOVA) test was conducted to verify whether the MPD results from the Safety Sensor is comparable to those from the LS-40. Freitas et al used the ANOVA test to investigate pavement texture and roughness variance and repeatability [ 64 ]. Table 1 lists the ANOVA testing results of MPDs on these sites.…”

Section: Mpd Texture Evaluationmentioning

confidence: 99%

See 1 more Smart Citation

A Novel 0.1 mm 3D Laser Imaging Technology for Pavement Safety Measurement

Yang

Wang

et al. 2022

Sensors

View full text Add to dashboard Cite

Traditionally, pavement safety performance in terms of texture, friction, and hydroplaning speed are measured separately via different devices with various limitations. This study explores the feasibility of using a novel 0.1 mm 3D Safety Sensor for pavement safety evaluation in a non-contact and continuous manner with a single hardware sensor. The 0.1 mm 3D images were collected for pavement safety measurement from 12 asphalt concrete (AC) and Portland cement concrete (PCC) field sites with various texture characteristics. The results indicate that the Safety Sensor was able to measure pavement texture data as traditional devices do with better repeatability. Moreover, pavement friction numbers can be estimated using 0.1 mm 3D data via the proposed 3D texture parameters with good accuracy using an artificial neural network, especially for asphalt pavement. Lastly, a case study of pavement hydroplaning speed prediction was performed using the Safety Sensor. The results demonstrate the potential of using ultra high-resolution 3D imaging to measure pavement safety, including texture, friction, and hydroplaning, in a non-contact, continuous, and accurate manner.

show abstract

Section: Mpd Texture Evaluationmentioning

confidence: 99%

“…Repeatability refers to the capability of a measuring device to obtain statistically similar results from repeated runs with measuring conditions unchanged [ 64 , 65 ]. In this section, the repeatability of the Safety Sensor was compared against the high-speed texture profiler ( Figure 2 c) for texture evaluation.…”

Section: Mpd Texture Evaluationmentioning

confidence: 99%

A Novel 0.1 mm 3D Laser Imaging Technology for Pavement Safety Measurement

Yang

Wang

et al. 2022

Sensors

View full text Add to dashboard Cite

show abstract

“…In the field of road engineering, the International Roughness Index (IRI) is the most widely used quality evaluation index for road [26]. The calculation of IRI is based on a 1/4 vehicle vibration model, as shown in Figure 13(a).…”

Section: Iri Standardized Vehicle Modelmentioning

confidence: 99%

Research on 3D Modeling Method of Cobblestone Road Based on Geometric Characteristics

Feng

Cui

et al. 2018

Mathematical Problems in Engineering

View full text Add to dashboard Cite

Based on the analysis of the geometric characteristics, distribution characteristics, and constraints of the cobblestone road, a three-dimensional (3D) parametric road modeling method based on geometric characteristics is proposed. The cobblestone model is established by the exponential oval equation, and the cobblestones distribution is determined by Monte Carlo stochastic search method. Then the 3D theoretical model of cobblestone road is obtained. To veritably simulate the cobblestone road, a generated 3D random road is fusing with the 3D cobblestone road model by alternating values, and the comparison between the real and modeling cobblestone roads is done in space domain and PSD curves. Then based on the establishment of the standard vehicle vibration model, the influences of the key geometric parameters of the cobblestone road on the vehicle vibration are analyzed by using the evaluation indices of the IRI and the RMS of the vehicle body acceleration. The proposed method can be extended to the 3D modeling of almost all strengthened test roads such as Belgian road, fish-scale pits road, ripple tracks, and washboard road and provides a 3D road modeling method with adjustable parameters, authenticity, and accuracy for the comprehensive construction of vehicle virtual test field.

show abstract

“…Periodicamente, promove oficinas de capacitação para profissionais de saúde da rede básica trabalharem a temática. 5,6 O grupo preza pela aceitação do próximo sem julgamento de valores para viabilizar a comunicação terapêutica e construir conhecimentos em saúde compatíveis com o sucesso do trabalho.…”

Section: Relato Do Casounclassified

Estruturando O Trabalho De Prevenção De Infecções Sexualmente Transmissíveis (Ist) Em Idosos: Oficinas Educativas

Afonso

Adduci²,

Oliveira³

et al. 2016

Rev Epidemiol Control Infect

View full text Add to dashboard Cite

Exceto onde especificado diferentemente, a matéria publicada neste periódico é licenciada sob forma de uma licença Creative Commons -Atribuição 4. Objetivos: Relatar vivências educativas na orientação à população idosa sobre sexualidade e prevenção das infecções sexualmente transmissíveis (IST). Descrição do caso: Trata-se de relato de experiência do grupo de prevenção de IST no idoso em ambulatório especializado. A gerontologia educacional foi utilizada como metodologia na produção das oficinas educativas realizadas entre novembro de 2012 e dezembro de 2014 para idosos usuários do serviço. As oficinas intituladas "Tenda da Sabedoria", "Baile dos Idosos" e "Roda de Conversa" abordaram a sexualidade do idoso, o conhecimento acerca da transmissão das doenças e formas de prevenção. As ações são sempre acompanhadas da distribuição de materiais educativos, preservativos bem como encaminhamentos e testagem para sorologia de Hepatites B e C, HIV e Sífilis. Observou-se a satisfação dos idosos, interesse e efetiva participação, ocorrendo aprendizado de forma simples e lúdica. Também foi possível identificar idosos interessados em multiplicar com seus pares e familiares o conhecimento construído. Conclusões: O processo educativo participativo promove o fortalecimento da rede de apoio ao idoso, tornando-se um canal ativo de comunicação entre equipe e usuário, oferecendo subsídios adequados ao trabalho de prevenção e tratamento das doenças.Objectives: To report educational experiences when counseling the elderly population about sexuality and prevention of sexually-transmitted diseases (STDs). Case description: This is a professional experience report of an STD prevention group in the elderly at a specialized clinic. Educational gerontology was used as a methodology in the production of workshops held from November/2012 to December/2014 available to service users. The workshops entitled "Wisdom Tent", "Elderly Ball" and "Conversation Circle" addressed the sexuality of the elderly, knowledge about transmission and how to prevent STDs. Actions are always accompanied by the distribution of educational material, condoms and referrals to undergo testing for Hepatitis B and C, HIV and syphilis. The group noticed the elderly's satisfaction, interest and effective participation through learning in a simple and enjoyable way. It was also possible to identify the elderly interested in sharing the knowledge with peers and family members. Conclusions: The participatory educational process promotes strengthening of the elderly support network, enabling an active channel of communication between staff and users, offering adequate subsidies for prevention and treatment of diseases. RESUMO ABSTRACT RELATO DE EXPERIÊNCIA

show abstract

The analysis of variability of pavement indicators: MPD, SMTD and IRI. A case study of Portugal roads

Cited by 15 publications

References 13 publications

A Novel 0.1 mm 3D Laser Imaging Technology for Pavement Safety Measurement

A Novel 0.1 mm 3D Laser Imaging Technology for Pavement Safety Measurement

Research on 3D Modeling Method of Cobblestone Road Based on Geometric Characteristics

Estruturando O Trabalho De Prevenção De Infecções Sexualmente Transmissíveis (Ist) Em Idosos: Oficinas Educativas

Contact Info

Product

Resources

About