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Articles de revues sur le sujet « Mobility App »

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Auteur : Grafiati
Publié le 14 mars 2023

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1

Hnatkovska, Viktoria, Amartya Lahiri et Sourabh Paul. « Castes and Labor Mobility ». American Economic Journal : Applied Economics 4, no 2 (1 avril 2012) : 274–307. http://dx.doi.org/10.1257/app.4.2.274.

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We examine the relative fortunes of the historically disadvantaged scheduled castes and tribes (SC/ST) in India in terms of their education attainment, occupation choices, consumption and wages. We study the period 1983–2005 using household survey data from successive rounds of the National Sample Survey. We find that this period has been characterized by a significant convergence of education, occupation distribution, wages and consumption levels of SC/STs toward non-SC/ST levels. Using various decomposition approaches we find that the improvements in education account for a major part of the wage and consumption convergence. (JEL I24, O15, O17, Z13)
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Collins, William J., et Marianne H. Wanamaker. « African American Intergenerational Economic Mobility since 1880 ». American Economic Journal : Applied Economics 14, no 3 (1 juillet 2022) : 84–117. http://dx.doi.org/10.1257/app.20170656.

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We document the intergenerational mobility of Black and White American men from 1880 through 2000 by building new historical datasets for the late nineteenth and early twentieth century and combining them with modern data to cover the middle and late twentieth century. We find large disparities in mobility, with White children having far better chances of escaping the bottom of the distribution than Black children in every generation. This mobility gap was more important in proximately determining each generation's racial gap than was the initial gap in parents' economic status. (JEL D31, J15, J62, N31, N32)
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Stoyanov, Andrey, et Nikolay Zubanov. « Productivity Spillovers Across Firms through Worker Mobility ». American Economic Journal : Applied Economics 4, no 2 (1 avril 2012) : 168–98. http://dx.doi.org/10.1257/app.4.2.168.

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Using matched firm-worker data from Danish manufacturing, we observe firm-to-firm worker movements and find that firms that hired workers from more productive firms experience productivity gains one year after the hiring. The productivity gains associated with hiring from more productive firms are equivalent to 0.35 percent per year for an average firm. Surviving a variety of statistical controls, these gains increase with education, tenure, and skill level of new hires, persist for several years after the hiring was done, and remain broadly similar for different industries and measures of productivity. Competing explanations for these gains, knowledge spillovers in particular, are discussed. (JEL D24, J24, J62, L60, O33)
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Berman, Yonatan. « The Long-Run Evolution of Absolute Intergenerational Mobility ». American Economic Journal : Applied Economics 14, no 3 (1 juillet 2022) : 61–83. http://dx.doi.org/10.1257/app.20200631.

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This paper combines cross-sectional and longitudinal income data to present the evolution of absolute intergenerational income mobility in ten advanced economies in the twentieth century. Absolute mobility decreased during the second half of the twentieth century in all of these countries. Increasing income inequality and decreasing growth rates have both contributed to the decrease, yet growth is the dominant contributor in most countries. We show that detailed panel data are effectively unnecessary for estimating absolute mobility over the long run. (JEL D31, J62, N30)
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Acciari, Paolo, Alberto Polo et Giovanni L. Violante. « And Yet It Moves : Intergenerational Mobility in Italy ». American Economic Journal : Applied Economics 14, no 3 (1 juillet 2022) : 118–63. http://dx.doi.org/10.1257/app.20210151.

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We estimate intergenerational income mobility in Italy using administrative data from tax returns. Our estimates of mobility are higher than prior work using survey data and indirect methods. The rankrank slope of parent-child income is 0.22, compared to 0.18 in Denmark and 0.34 in the United States. The probability that a child reaches the top quintile of the national income distribution starting from a family in the bottom quintile is 0.11. We uncover substantial geographical variation: upward mobility is much stronger in northern Italy, where provinces have higher measured school quality, more stable families, and more favorable labor market conditions. (JEL D31, J31, J62, R23)
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Murthy, D. V. B., V. Subramanian, V. S. Pavan Kumar, T. S. Natarajan, G. K. Raghuraman, R. Dhamodharan et V. R. K. Murthy. « Microwave hall mobility studies on polymer–metal oxide nanocomposites ». Journal of Applied Polymer Science 107, no 3 (2007) : 1967–72. http://dx.doi.org/10.1002/app.27240.

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Laurier, Eric, Barry Brown et Moira McGregor. « Mediated Pedestrian Mobility : Walking and the Map App ». Mobilities 11, no 1 (16 novembre 2015) : 117–34. http://dx.doi.org/10.1080/17450101.2015.1099900.

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Nakashima, Ryota, Takahiro Sato et Takuya Maruyama. « Gamification Approach to Smartphone-app-based Mobility Management ». Transportation Research Procedia 25 (2017) : 2344–55. http://dx.doi.org/10.1016/j.trpro.2017.05.234.

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Riquet, Anne-Marie, Alexandra Feigenbaum, Paul Colonna et Denis Lourdin. « Molecular mobility in starchy materials studied by electron spin resonance ». Journal of Applied Polymer Science 88, no 4 (14 février 2003) : 990–97. http://dx.doi.org/10.1002/app.11753.

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Vatalis, A. S., A. Kanapitsas, C. G. Delides, K. Viras et P. Pissis. « Phase behavior and molecular mobility in polyurethane/styrene-acrylonitrile blends ». Journal of Applied Polymer Science 80, no 7 (2001) : 1071–84. http://dx.doi.org/10.1002/app.1192.

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Altindag, Onur, Bilge Erten et Pinar Keskin. « Mental Health Costs of Lockdowns : Evidence from Age-Specific Curfews in Turkey ». American Economic Journal : Applied Economics 14, no 2 (1 avril 2022) : 320–43. http://dx.doi.org/10.1257/app.20200811.

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Using a strict, age-specific lockdown order for adults aged 65 and older in Turkey, we examine the mental health consequences of an extended period of tight mobility restrictions on senior adults. Adopting a regression discontinuity design, we find that the curfew-induced decline in mobility substantially worsened mental health outcomes, including somatic and nonsomatic symptoms of mental distress (approximately 0.2 standard deviation). Exploring potential channels, we document an increase in social and physical isolation, with no evidence of robust changes in labor market outcomes or intrahousehold conflict for this subpopulation. (JEL D13, I21, I18, J14, O15)
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Moussa, Mohammed A., Ahmed M. Ghoneim, Mona H. Abdel Rehim, Sherif A. Khairy, Mohamed A. Soliman et Gamal M. Turky. « Relaxation dynamic and electrical mobility for poly(methyl methacrylate)-polyaniline composites ». Journal of Applied Polymer Science 134, no 42 (22 juin 2017) : 45415. http://dx.doi.org/10.1002/app.45415.

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Khalikov, R. M., G. V. Kozlov et G. E. Zaikov. « The dependence of diffusivity of hydrocarbons in polyvyniltrimethylsilane on molecular mobility level ». Journal of Applied Polymer Science 101, no 6 (2006) : 4048–50. http://dx.doi.org/10.1002/app.23124.

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Rao, D. Rama, et V. B. Gupta. « Molecular mobility in wool fibers as determined from nuclear magnetic resonance studies ». Journal of Applied Polymer Science 44, no 4 (5 février 1992) : 623–32. http://dx.doi.org/10.1002/app.1992.070440408.

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Mata-Padilla, José M., Francisco J. Medellín-Rodríguez, Carlos A. Ávila-Orta, Eduardo Ramírez-Vargas, Gregorio Cadenas-Pliego, Mario Valera-Zaragoza et Sofía M. Vega-Díaz. « Morphology and chain mobility of reactive blend nanocomposites of PP-EVA/Clay ». Journal of Applied Polymer Science 131, no 20 (17 mai 2014) : n/a. http://dx.doi.org/10.1002/app.40897.

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Gupta, Sanjay, et Kushagra Sinha. « Assessing the Factors Impacting Transport Usage of Mobility App Users in the National Capital Territory of Delhi, India ». Sustainability 14, no 21 (24 octobre 2022) : 13768. http://dx.doi.org/10.3390/su142113768.

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Smartphone-based mobility apps have created a smartphone-enabled ecosystem of mobility services in developed countries and are slowly picking up pace in the Global South. Against this backdrop, this study used Latent Class Cluster Analysis to empirically investigate the impacts of mobility apps on transport usage patterns in Delhi by classifying users into three latent clusters based on socioeconomic characteristics, smartphone app usage, attitudes, and transport usage. Cluster 1 consisted of users with low app usage, and higher usage of public transport and intermediate public transport; Cluster 2 consisted of multimodal users with high app usage; and Cluster 3 consisted of users with moderate app usage and heavy reliance on private vehicles. Furthermore, the detailed characteristics of each latent class and factors affecting the individual’s probability of being classified into these clusters are discussed. It was found that younger users with higher education, more smartphone experience, medium-to-high household income and lower vehicle ownership had a very high probability of being classified as a multimodal traveler. Furthermore, the attitudes and preferences of users belonging to these clusters towards their choice of transport are discussed, along with a brief policy discussion for encouraging new app-based mobility services such as MaaS.
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Parker, A. A., S. M. Opalka, N. R. Dando, D. G. Weaver et P. L. Price. « Studies of polymer mobility in composite blends of poly(vinyl butyral) and alumina ». Journal of Applied Polymer Science 48, no 10 (10 juin 1993) : 1701–7. http://dx.doi.org/10.1002/app.1993.070481002.

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Pant, Ramesh R., Brian T. Rasley, Joseph P. Buckley, Christopher T. Lloyd, Robert F. Cozzens, Patrick G. Santangelo et James H. Wynne. « Synthesis, mobility study and antimicrobial evaluation of novel self-spreading ionic silicone oligomers ». Journal of Applied Polymer Science 104, no 5 (2007) : 2954–64. http://dx.doi.org/10.1002/app.25878.

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Le Pira, Michela. « UaaS App – University as a Service App : exploring the acceptability of a MaaS-like concept for a University community ». European Transport/Trasporti Europei, no 90 (février 2023) : 1–10. http://dx.doi.org/10.48295/et.2023.90.2.

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This paper introduces the concept of UaaS App, i.e. “University as a Service” App, based on the well-known Mobility as a Service (MaaS) concept, and explores the acceptability and willingness to use a digital application capable of providing transport (and other) services offered to a university community. The case study is the University of Catania (Italy), with about 40,000 students and 2500 employees. An online survey was conducted to analyse potential user mobility habits, propensity and preferences towards different services proposed by the app. A Multiple Correspondence Analysis was also performed to find clusters and correlations among variables and derive useful information on the target users of a MaaS-like service for a University community. Results show a general interest but also highlight some weaknesses that should be addressed to improve the efficiency of the services offered by a MaaS-like application.
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Marquart, Heike, et Julia Schuppan. « Promoting Sustainable Mobility : To What Extent Is “Health” Considered by Mobility App Studies ? A Review and a Conceptual Framework ». Sustainability 14, no 1 (21 décembre 2021) : 47. http://dx.doi.org/10.3390/su14010047.

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Promoting cycling and walking in cities improves individual health and wellbeing and, together with public transport, promotes societal sustainability patterns. Recently, smartphone apps informing and motivating sustainable mobility usage have increased. Current research has applied and investigated these apps; however, none have specifically considered mobility-related health components within mobility apps. The aim of this study is to examine the (potential) role of health-related information provided in mobility apps to influence mobility behavior. Following a systematic literature review of empirical studies applying mobility apps, this paper (1) investigates the studies and mobility apps regarding communicated information, strategies, and effects on mobility behavior and (2) explores how, and to what extent, health and its components are addressed. The reviewed studies focus on environmental information, especially CO2-emissions. Health is represented by physical activity or calories burned. The self-exposure to air pollution, noise, heat, traffic injuries or green spaces is rarely addressed. We propose a conceptual framework based on protection motivation theory to include health in mobility apps for sustainable mobility behavior change. Addressing people’s self-protective motivation could empower mobility app users. It might be a possible trigger for behavior change, leading towards healthy and sustainable mobility and thus, have individual and societal benefits.
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Alberola, N., A. Bergeret, P. Battesti et A. Revillon. « Molecular mobility in styrene-co-methacrylic acid random copolymers from 100 to 450 K ». Journal of Applied Polymer Science 48, no 11 (15 juin 1993) : 2041–53. http://dx.doi.org/10.1002/app.1993.070481117.

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Luo, Shijian, Johannes Leisen et C. P. Wong. « Study on mobility of water and polymer chain in epoxy and its influence on adhesion ». Journal of Applied Polymer Science 85, no 1 (26 avril 2002) : 1–8. http://dx.doi.org/10.1002/app.10473.

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de L. Campello, Sérgio, Ricardo E. de Souza et Walter M. de Azevedo. « Probing molecular mobility during crosslinking process of commercial resins by NMR multiexponential relaxation data analysis ». Journal of Applied Polymer Science 121, no 4 (16 mars 2011) : 2220–25. http://dx.doi.org/10.1002/app.33827.

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Vidotti, S. E., A. C. Chinellato, G. H. Hu et L. A. Pessan. « Effects of low molar mass additives on the molecular mobility and transport properties of polysulfone ». Journal of Applied Polymer Science 101, no 2 (2006) : 825–32. http://dx.doi.org/10.1002/app.22855.

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Rios de Anda, Agustín, Louise-Anne Fillot, Didier R. Long et Paul Sotta. « Influence of the amorphous phase molecular mobility on impact and tensile properties of polyamide 6,6 ». Journal of Applied Polymer Science 133, no 21 (8 février 2016) : n/a. http://dx.doi.org/10.1002/app.43457.

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Wan, Meixiu, Guangyi Sang, Yingping Zou, Songting Tan et Yongfang Li. « A polythiophene derivative with dioctyloxyltriphenylamine-vinylene conjugated side chain : Synthesis, hole mobility, and photovoltaic property ». Journal of Applied Polymer Science 113, no 3 (5 août 2009) : 1415–21. http://dx.doi.org/10.1002/app.29921.

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Kochervinskij, Valentin V., Inna A. Malyshkina, Natalia P. Bessonova, Sergey N. Suljanov et Kirill A. Dembo. « Effect of recrystallization on the molecular mobility of a copolymer of vinylidene fluoride and hexafluoropropylene ». Journal of Applied Polymer Science 120, no 1 (6 octobre 2010) : 13–20. http://dx.doi.org/10.1002/app.32993.

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Mendonça da Rocha Oliveira, Lucas, Priscila Vedovello et Caio Marcio Paranhos. « Polycarbonate/1-(2-hydroxyethyl)-2,3-dimethylimidazolium chloride composite membranes and short-range chain mobility analysis ». Journal of Applied Polymer Science 134, no 30 (2 avril 2017) : 45117. http://dx.doi.org/10.1002/app.45117.

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Horvath, Laszlo, Susan Banducci, Joshua Blamire, Cathrine Degnen, Oliver James, Andrew Jones, Daniel Stevens et Katharine Tyler. « Adoption and continued use of mobile contact tracing technology : multilevel explanations from a three-wave panel survey and linked data ». BMJ Open 12, no 1 (janvier 2022) : e053327. http://dx.doi.org/10.1136/bmjopen-2021-053327.

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ObjectiveTo identify the key individual-level (demographics, attitudes, mobility) and contextual (COVID-19 case numbers, tiers of mobility restrictions, urban districts) determinants of adopting the NHS COVID-19 contact tracing app and continued use overtime.Design and settingA three-wave panel survey conducted in England in July 2020 (background survey), November 2020 (first measure of app adoption) and March 2021 (continued use of app and new adopters) linked with official data.ParticipantsN=2500 adults living in England, representative of England’s population in terms of regional distribution, age and gender (2011 census).Primary outcomeRepeated measures of self-reported app usage.Analytical approachMultilevel logistic regression linking a range of individual level (from survey) and contextual (from linked data) determinants to app usage.ResultsWe observe initial app uptake at 41%, 95% CI (0.39% to 0.43%), and a 12% drop-out rate by March 2021, 95% CI (0.10% to 0.14%). We also found that 7% of nonusers as of wave 2 became new adopters by wave 3, 95% CI (0.05% to 0.08%). Initial uptake (or failure to use) of the app associated with social norms, privacy concerns and misinformation about third-party data access, with those living in postal districts with restrictions on mobility less likely to use the app. Perceived lack of transparent evidence of effectiveness was associated with drop-out of use. In addition, those who trusted the government were more likely to adopt in wave 3 as new adopters.ConclusionsSuccessful uptake of the contact tracing app should be evaluated within the wider context of the UK Government’s response to the crisis. Trust in government is key to adoption of the app in wave 3 while continued use is linked to perceptions of transparent evidence. Providing clear information to address privacy concerns could increase uptake, however, the disparities in continued use among ethnic minority participants needs further investigation.
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Evanson, Kevin W., Timothy A. Thorstenson et Marek W. Urban. « Surface and interfacial FTIR spectroscopic studies of latexes. II. Surfactant–copolymer compatibility and mobility of surfactants ». Journal of Applied Polymer Science 42, no 8 (20 avril 1991) : 2297–307. http://dx.doi.org/10.1002/app.1991.070420821.

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Chung, Junho, et Seung‐Yeop Kwak. « Effect of nanoscale confinement on molecular mobility and drug release properties of cellulose acetate/sulindac nanofibers ». Journal of Applied Polymer Science 136, no 33 (29 avril 2019) : 47863. http://dx.doi.org/10.1002/app.47863.

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Yousefi, Ali Akbar. « Segmental mobility in the vicinity ofTgin PS/SBR blends : Nanodomain size prediction of the dispersed phase ». Journal of Applied Polymer Science 127, no 1 (27 avril 2012) : 659–65. http://dx.doi.org/10.1002/app.37847.

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Mardini, Mamoun T., Parisa Rashidi, Subhash Nerella, Dottington Fullwood, Duane Corbett, Sanjay Ranka et Todd M. Manini. « EXCURSION FROM HOME AND ECOLOGICAL PAIN IN OLDER ADULTS WITH KNEE PAIN ». Innovation in Aging 3, Supplement_1 (novembre 2019) : S524. http://dx.doi.org/10.1093/geroni/igz038.1929.

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Abstract Background: Pain is an essential factor in limiting life-space mobility. Ecological momentary assessment (EMA) is crucial to understanding pain intensity and frequency. This study evaluated a customized smartwatch app for daily ecological pain reporting and GPS (Global Positioning System) coordinates collection to understand the impact of pain on daily excursion from home in older adults who report knee pain. Methods: Participants (n=14, 73.2 +/- 5.4 yrs, 64% female) wore a smartwatch with a customized app called Patient Reported Outcome of Mood, Pain, and fatigue (PROMPT) for 6.5 (4.0) days. Participants were prompted in their free-living environment about their pain intensity (range 0-10) in the morning, afternoon and evening. Additionally, GPS data were collected at 15 min intervals throughout the day. Geodesic distance was used to calculate the distance from the home address. Daily pain values were binned into high and low levels to compare to maximum daily excursions. Results: Individuals with average daily pain > 2 traveled 4.1 fewer miles than those individuals reporting pain 2 exceeded a distance of 5 miles compared to 17.9% of those individuals reporting pain <= 2 (X2=6.89, p < 0.05). Conclusion: In older adults, higher level of knee pain is associated with a decline in life-space mobility. Using custom designed smartwatch applications provides new opportunity to investigate how pain impacts community mobility.
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Strutz, Nicole, Hanna Brodowski, Joern Kiselev, Anika Heimann-Steinert et Ursula Müller-Werdan. « App-Based Evaluation of Older People’s Fall Risk Using the mHealth App Lindera Mobility Analysis : Exploratory Study ». JMIR Aging 5, no 3 (16 août 2022) : e36872. http://dx.doi.org/10.2196/36872.

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Background Falls and the risk of falling in older people pose a high risk for losing independence. As the risk of falling progresses over time, it is often not adequately diagnosed due to the long intervals between contacts with health care professionals. This leads to the risk of falling being not properly detected until the first fall. App-based software able to screen fall risks of older adults and to monitor the progress and presence of fall risk factors could detect a developing fall risk at an early stage prior to the first fall. As smartphones become more common in the elderly population, this approach is easily available and feasible. Objective The aim of the study is to evaluate the app Lindera Mobility Analysis (LIN). The reference standards determined the risk of falling and validated functional assessments of mobility. Methods The LIN app was utilized in home- and community-dwelling older adults aged 65 years or more. The Berg Balance Scale (BBS), the Tinetti Test (TIN), and the Timed Up & Go Test (TUG) were used as reference standards. In addition to descriptive statistics, data correlation and the comparison of the mean difference of analog measures (reference standards) and digital measures were tested. Spearman rank correlation analysis was performed and Bland-Altman (B-A) plots drawn. Results Data of 42 participants could be obtained (n=25, 59.5%, women). There was a significant correlation between the LIN app and the BBS (r=–0.587, P<.001), TUG (r=0.474, P=.002), and TIN (r=–0.464, P=.002). B-A plots showed only few data points outside the predefined limits of agreement (LOA) when combining functional tests and results of LIN. Conclusions The digital app LIN has the potential to detect the risk of falling in older people. Further steps in establishing the validity of the LIN app should include its clinical applicability. Trial Registration German Clinical Trials Register DRKS00025352; https://tinyurl.com/65awrd6a
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Chernova, Daria A., et Andrey Kh Vorobiev. « Molecular mobility of nitroxide spin probes in glassy polymers : Models of the complex motion of spin probes ». Journal of Applied Polymer Science 121, no 1 (16 février 2011) : 102–10. http://dx.doi.org/10.1002/app.33337.

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Feilhauer, Thomas, Florian Braun, Katja Faller, David Hutter, Daniel Mathis, Johannes Neubauer, Jasmin Pogatschneg et Michelle Weber. « Mobility Choices—An Instrument for Precise Automatized Travel Behavior Detection & ; Analysis ». Sustainability 13, no 4 (10 février 2021) : 1912. http://dx.doi.org/10.3390/su13041912.

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Within the Mobility Choices (MC) project we have developed an app that allows users to record their travel behavior and encourages them to try out new means of transportation that may better fit their preferences. Tracks explicitly released by the users are anonymized and can be analyzed by authorized institutions. For recorded tracks, the freely available app automatically determines the segments with their transportation mode; analyzes the track according to the criteria environment, health, costs, and time; and indicates alternative connections that better fit the criteria, which can individually be configured by the user. In the second step, the users can edit their tracks and release them for further analysis by authorized institutions. The system is complemented by a Web-based analysis program that helps authorized institutions carry out specific evaluations of traffic flows based on the released tracks of the app users. The automatic transportation mode detection of the system reaches an accuracy of 97%. This requires only minimal corrections by the user, which can easily be done directly in the app before releasing a track. All this enables significantly more accurate surveys of transport behavior than the usual time-consuming manual (non-automated) approaches, based on questionnaires.
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Boersma, Arjen. « Mobility and solubility of antioxidants and oxygen in glassy polymers. I. Concentration and temperature dependence of antioxidant sorption ». Journal of Applied Polymer Science 89, no 8 (13 juin 2003) : 2163–78. http://dx.doi.org/10.1002/app.12397.

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Kathuria, Ajay, Niels Brouwers, Mieke Buntinx, Trevor Harding et Rafael Auras. « Effect of MIL-53 (Al) MOF particles on the chain mobility and crystallization of poly(L-lactic acid) ». Journal of Applied Polymer Science 135, no 3 (29 août 2017) : 45690. http://dx.doi.org/10.1002/app.45690.

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Remy, Coline, Candace Brakewood, Niloofar Ghahramani, Eun Jin Kwak et Jonathan Peters. « Transit Information Utilization during an Extreme Weather Event : An Analysis of Smartphone App Data ». Transportation Research Record : Journal of the Transportation Research Board 2672, no 1 (31 juillet 2018) : 90–100. http://dx.doi.org/10.1177/0361198118789953.

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Extreme weather events such as heavy snow can severely disrupt urban transportation systems. When this occurs, travelers often seek information about the status of transportation services. This study aims to assess information utilization during an extreme weather event by analyzing data from a smartphone application (“app”) called Transit, which provides real-time transit and shared mobility information in many cities. This research focuses on a snowstorm that hit the northeastern United States in January 2016 and severely disrupted transit and shared mobility services. An analysis of Transit app data is conducted in four parts for New York City, Philadelphia, and Washington, D.C. First, hourly app utilization during the snowstorm was compared with mean hourly app utilization prior to the storm. Second, the rate of app usage was calculated by dividing hourly utilization during the storm by the mean hourly volume before the storm. Third, an ordinary least squares regression model of hourly app usage was estimated for each city. Last, a feature within the app used to request Uber vehicles was examined. The results of the first three analyses reveal that overall app usage decreased during the snowstorm in all three cities; after the storm, New York experienced a significant increase in overall app use during the first Monday commuting period. The analysis of Uber data reveals that app users continued to search for ridehailing services during the snowstorm, despite travel bans. These findings are important for transportation operators and app developers to understand how travelers use information during extreme weather events.
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Garrido-Castro, J. L., F. Torres Vidal, M. Ladehesa Pineda, M. D. C. Castro Villegas, I. C. Aranda-Valera, R. Ortega Castro, C. Gonzalez-Navas et E. Collantes Estevez. « FRI0578 DEVELOPMENT OF A MOBILE APP AND WIRELESS SENSORS SYSTEM TO ASSESS SPINAL MOBILITY IN AXIAL SPONDYLOARTHRITIS : PRELIMINARY RESULTS. » Annals of the Rheumatic Diseases 79, Suppl 1 (juin 2020) : 892.1–893. http://dx.doi.org/10.1136/annrheumdis-2020-eular.2137.

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Background:Spinal mobility is an important assessment outcome in axial spondyloarthritis (axSpA). Until now, conventional metrology (Schober test, lateral flexion, BASMI, …) has been used to assess spinal mobility, however, new technologies have been developed that provide better accuracy, reliability and responsiveness. Motion capture has been validated and Inertial Measurement Unit (IMU) sensors, appears to be a promising alternative. To use this IMU sensors in axSpA patients, wireless systems must be developed and validated allowing to doctors and patients to use them in hospitals and at home.Objectives:To develop an easy to use mobile app and IMU sensors system for analyse mobility for axSpA patients.Methods:A mobile app has been developed (iUCOTrack) that communicates with two IMU sensors (Shimmer 3©, Fig-a). These sensors are attached in different locations: at forehead and T12 for cervical mobility (Fig-c) and T12 and Sacrum for thoracolumbar mobility (Fig-b). The app provides mobility results for the different tests (Fig-d) and store results in the cloud. Validation tests of these sensors, using Matlab©, were done previously [1]. Our study test the validity of this app against a motion capture system, the UCOTrack®, and its metrology index, the UCOASMI [2], and conventional metrology as reference standards. Patiens with axSpA were recruited consecutively from the COSPAR cohort. Conventional metrology, PRO questionnaires and mobility (Cervical and thoracolumbar - flexion, lateral bending, rotation) using the iUCOTrack app and the UCOTrack were registered. Intraclasss Correlation Coefficients (ICC 3,1) between systems and correlations (spearman) with other axSpA outcome measures were performed for testing validity.Results:15 axSpA patients (47% female, age 52±12 years, disease duration 21±16 years) were included. Table shows ROM (SD) in degrees obtained for cervical and thoracolumbar spine measured by motion capture (UCOTrack) and the app (iUCOTrack). In the last column appears the UCOASMI (SD) calculated using angles obtained by each system. All ICC were good (ICC>0.8), and correlations were significant (p<0.05, r>0.8) specially the UCOASMI. Cervical rotation using a goniometer was 106.2±36°, with a significant correlation with both systems (p<0.05; r>0.8). Schober correlation with lumbar flexion was poor (NS;r>0.5) but a good correlation appeared with lateral flexion (p<0.01;r>0.9). Mean BASMI was 4.0± 1.8 with an excellent correlation with UCOASMI measured by Mocap (p<0.01;r=0.93) and by IMU (p<0.001;r=0.98).CervicalThoracolumbarFlexRotLatFlexRotLatUCOASMIUCOTrack79.5(24.7)109.8(29.6)62.5(25.1)100.7(21.6)61.8(25.3)54.7(22.9)6.07(1.66)iUCOTrack83.0(33.6)112.6(44.3)73.9(29.7)114.4(28.1)51.4(16.1)59.4(15.4)6.15(1.65)ICC0.8640.9030.8120.9360.7980.9010.970Corr0.89*0.96**0.82*0.97**0.88*0.97***0.97**Conclusion:New metrology tools are needed to improve features of convencional metrology. Motion Capture has proved to be valid but has feasibility problems. IMU sensor based systems provide similar results to motion capture but it can be faster and cheaper. A system based on mobile app connected to wireless IMU sensors could be a solution to improve metrology in axSpA. Further studies and developments are needed to introduce these technologies in research and clinical daily practice.References:[1] Use of inertial sensors for the assessment of spinal mobility in axial spondyloarthritis patients. Rehabilitacion. 2018 Apr;52(2):100-106.[2] High Reproducibility of an Automated Measurement of Mobility for Patients with Axial Spondyloarthritis. J Rheumatol. 2018 Oct;45(10):1383-1388.Acknowledgments:Funded by Junta de Andalucia (PIN-0079-2016) and ISCIII (DTS18/00046).Disclosure of Interests:Juan L. Garrido-Castro: None declared, Francisco Torres Vidal: None declared, MLourdes Ladehesa Pineda: None declared, María del Carmen Castro Villegas: None declared, Inmaculada Concepcion Aranda-Valera: None declared, Rafaela Ortega Castro: None declared, Cristina Gonzalez-Navas: None declared, Eduardo Collantes Estevez Grant/research support from: ROCHE and Pfizer, Speakers bureau: ROCHE, Lilly, Bristol and Celgene
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Arnold, David. « The Impact of Privatization of State-Owned Enterprises on Workers ». American Economic Journal : Applied Economics 14, no 4 (1 octobre 2022) : 343–80. http://dx.doi.org/10.1257/app.20190428.

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While privatization of state-owned enterprises (SOEs) remains a popular policy tool in many countries, the impacts on workers are unclear. This paper studies the case of Brazil, which implemented a large privatization program in the 1990s. Following privatization, incumbent workers in privatized SOEs suffer a wage decline of roughly 25 percent relative to a matched control group. Additionally, private sector firms that are connected to privatized SOEs by labor mobility also reduce wages. A summary calculation suggests that privatization decreased the formal sector wage by 3 percent, with about two-thirds of this effect due to the indirect impact on private sector workers. (JEL J31, J62, L32, L33, O14, O15)
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Eizenberg, Alon, et Alberto Salvo. « The Rise of Fringe Competitors in the Wake of an Emerging Middle Class : An Empirical Analysis ». American Economic Journal : Applied Economics 7, no 3 (1 juillet 2015) : 85–122. http://dx.doi.org/10.1257/app.20130104.

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The “emerging middle class” is a force of economic importance in many consumer markets around the globe. A striking phenomenon in some of these markets is the growth of “generic,” low-price brands. This paper examines these phenomena in Brazil's large soft drink market. Our study draws on data sources that capture both social mobility and market outcomes. Our analysis suggests that the emergence of a price-sensitive, new middle class aided the staggering growth of a fringe of generic producers. Our estimated demand model rationalizes a drastic price cut, led by Coca-Cola, that allowed it to contain the fringe's growth. (JEL D12, L11, L66, L81, M37, O12, O14)
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Foged, Mette, et Giovanni Peri. « Immigrants' Effect on Native Workers : New Analysis on Longitudinal Data ». American Economic Journal : Applied Economics 8, no 2 (1 avril 2016) : 1–34. http://dx.doi.org/10.1257/app.20150114.

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Using longitudinal data on the universe of workers in Denmark during the period 1991–2008, we track the labor market outcomes of low-skilled natives in response to an exogenous inflow of low-skilled immigrants. We innovate on previous identification strategies by considering immigrants distributed across municipalities by a refugee dispersal policy in place between 1986 and 1998. We find that an increase in the supply of refugee-country immigrants pushed less educated native workers (especially the young and low-tenured ones) to pursue less manual-intensive occupations. As a result immigration had positive effects on native unskilled wages, employment, and occupational mobility. (JEL J15, J24, J31, J61, J62)
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Deutscher, Nathan. « Place, Peers, and the Teenage Years : Long-Run Neighborhood Effects in Australia ». American Economic Journal : Applied Economics 12, no 2 (1 avril 2020) : 220–49. http://dx.doi.org/10.1257/app.20180329.

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I use variation in the age at which children move to show that where an Australian child grows up has a causal effect on their adult income, education, marriage, and fertility. In doing so, I replicate the findings of Chetty and Hendren (2018a) in a country with less inequality, more social mobility, and different institutions. Across all outcomes, place typically matters most during the teenage years. Finally, I provide suggestive evidence of peer effects using cross-cohort variation in the peers of permanent postcode residents: those born into a richer cohort for their postcode tend to end up with higher incomes themselves. (JEL D63, J13, J62, R23, Z13)
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Oreopoulos, Philip, Till von Wachter et Andrew Heisz. « The Short- and Long-Term Career Effects of Graduating in a Recession ». American Economic Journal : Applied Economics 4, no 1 (1 janvier 2012) : 1–29. http://dx.doi.org/10.1257/app.4.1.1.

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This paper analyzes the magnitude and sources of long-term earnings declines associated with graduating from college during a recession. Using a large longitudinal university-employer-employee dataset, we find that the cost of recessions for new graduates is substantial and unequal. Unlucky graduates suffer persistent earnings declines lasting ten years. They start to work for lower paying employers, and then partly recover through a gradual process of mobility toward better firms. We document that more advantaged graduates suffer less from graduating in recessions because they switch to better firms quickly, while earnings of less advantaged graduates can be permanently affected by cyclical downgrading. (JEL E32, I23, J22, J23, J31)
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Cadena, Brian C., et Brian K. Kovak. « Immigrants Equilibrate Local Labor Markets : Evidence from the Great Recession ». American Economic Journal : Applied Economics 8, no 1 (1 janvier 2016) : 257–90. http://dx.doi.org/10.1257/app.20140095.

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This paper demonstrates that low-skilled Mexican-born immigrants' location choices respond strongly to changes in local labor demand, which helps equalize spatial differences in employment outcomes for low-skilled native workers. We leverage the substantial geographic variation in labor demand during the Great Recession to identify migration responses to local shocks and find that low-skilled Mexican-born immigrants respond much more strongly than low-skilled natives. Further, Mexican mobility reduced the incidence of local demand shocks on natives, such that those living in metro areas with a substantial Mexican-born population experienced a roughly 50 percent weaker relationship between local shocks and local employment probabilities. (JEL E32, J15, J23, J24, J61, R23)
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Fondevila-Gascón, Joan_Francesc, Marc Polo-López, Óscar Gutiérrez-Aragón et Josep Rom-Rodríguez. « Movilidad e interactividad en el ámbito universitario. Oportunidades para las apps. » Comunicación Revista Internacional de Comunicación Audiovisual Publicidad y Literatura 1, no 18 (2020) : 39–65. http://dx.doi.org/10.12795/comunicacion.2020.i18.03.

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Mobility and interactivity are two growing phenomena among youth. Mobile applications (apps) are capturing the attention of university students, which opens up a range of opportunities. Using a quantitative and qualitative research method, the possible usefulness of applications in the university environment with an entertainment objective is studied. It is concluded that from the student perspective, interactive applications specialized in their profile are well received and that the main criteria of choice are quality and price. A significant relationship is observed between age and use of social networks to plan entertainment. Spanish university students, therefore, need a specialized app that covers their leisure and entertainment needs digitally and efficiently.
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Clouse, Kate, Sandisiwe Noholoza, Nkosinathi Ngcobo, Sindiswa Madwayi, Megan Mrubata, Carol S. Camlin, Landon Myer et Tamsin K. Phillips. « Cohort profile : CareConekta : a pilot study of a smartphone application to improve engagement in postpartum HIV care in South Africa ». BMJ Open 12, no 11 (novembre 2022) : e064946. http://dx.doi.org/10.1136/bmjopen-2022-064946.

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PurposePregnant and postpartum women living with HIV in South Africa are at high risk of dropping out of care, particularly after delivery. Population mobility may contribute to disruptions in HIV care, and postpartum women are known to be especially mobile. To improve engagement in HIV care during the peripartum period, we developed CareConekta, a smartphone application (app) that uses GPS coordinates to characterise mobility and allow for real-time intervention. We conducted a randomised controlled pilot study to assess feasibility, acceptability and initial efficacy of the app intervention to improve engagement in HIV care. This cohort profile describes participant enrolment and follow-up, describes the data collected and provides participant characteristics.ParticipantsWe enrolled 200 pregnant women living with HIV attending routine antenatal care at the Gugulethu Midwife Obstetric Unit in Cape Town, South Africa. Eligible women must have owned smartphones that met the app’s technical requirements. Seven participants were withdrawn near enrolment, leaving 193 in the cohort.Findings to dateData were collected from detailed participant questionnaires at enrolment and follow-up (6 months after delivery), as well as GPS data from the app, and medical records. Follow-up is complete; initial analyses have explored smartphone ownership, preferences and patterns of use among women screened for eligibility and those enrolled in the study.Future plansAdditional planned analyses will characterise mobility in the population using the phone GPS data and participant self-reported data. We will assess the impact of mobility on engagement in care for the mother and infant. We also will describe the acceptability and feasibility of the study, including operational lessons learnt. By linking this cohort to the National Health Laboratory Service National HIV Cohort in South Africa, we will continue to assess engagement in care and mobility outcomes for years to come. Collaborations are welcome.Trial registration numberNCT03836625.
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Meenakshi, R., R. Ponnusamy, Saleh Alghamdi, Osama Ibrahim Khalaf et Youseef Alotaibi. « Development of Mobile App to Support the Mobility of Visually Impaired People ». Computers, Materials & ; Continua 73, no 2 (2022) : 3473–95. http://dx.doi.org/10.32604/cmc.2022.028540.

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Gilibert, Mireia, et Imma Ribas. « Synergies between app-based car-related Shared Mobility Services for the development of more profitable business models ». Journal of Industrial Engineering and Management 12, no 3 (18 novembre 2019) : 405. http://dx.doi.org/10.3926/jiem.2930.

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Purpose: Emerging shared mobility services are an opportunity for cities to reduce the number of car single trips to both improve traffic congestion and the environment. Users of shared mobility services, such as carsharing, ridesharing and singular and shared ride-hailing services, often need to be customers of more than one service to cover all their transport needs, since few mobility providers offer more than one of these services from a single platform. On the other hand, providers offering these services separately do not optimize costly resources and activities, such as the vehicles or the technology. Hence, the aim of this paper is to find synergies between the different app-based car-related shared mobility services that foster the development of new business models, to increase the profitability of these services.Design/methodology/approach: The research approach is built on the literature of car-related shared mobility services business models, supported by the review of certain outstanding services websites, and face-to-face interviews with users and drivers of these transport services. The analysis is presented by means of the Business Model Canvas methodology.Findings: Based on the synergies found, this paper suggests a few different approaches for services to share some resources and activities.Originality/value: This study identifies the common features of carsharing, ridesharing and singular and shared ride-hailing services to develop more profitable business models, based on providing the services in aggregated form, or outsourcing activities and resources. In addition, the implications of these proposals are discussed as advantages and drawbacks from a business perspective.
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