Visualizations are now widely used across disciplines to understand and communicate data. The benefit of visualizations lies in leveraging our natural visual perception. However, the sole dependency ...on vision can produce unintended discrimination against people with visual impairments. While the visualization field has seen enormous growth in recent years, supporting people with disabilities is much less explored. In this work, we examine approaches to support this marginalized user group, focusing on visual disabilities. We collected and analyzed papers published for the last 20 years on visualization accessibility. We mapped a design space for accessible visualization that includes seven dimensions: user group, literacy task, chart type, interaction, information granularity, sensory modality, assistive technology. We described the current knowledge gap in light of the latest advances in visualization and presented a preliminary accessibility model by synthesizing findings from existing research. Finally, we reflected on the dimensions and discussed opportunities and challenges for future research.
•To-bus accessibility and by-bus accessibility significantly affect housing prices in the bus-dependent city.•Spatial heterogeneity exists in the price effects of bus accessibility.•Bus frequency ...exerts a larger price effect in the peripheral area than in the central.
Accessibility to transit facilities is perceived to affect property prices. However, accessibility by transit has rarely elicited adequate scholarly attention in property price analyses. Additionally, previous studies on how transit accessibility affects property prices mainly focused on rail and bus rapid transit systems, while conventional bus transit, which is very popular in many contexts, has seldom been investigated. Moreover, whether there is spatial heterogeneity in the price (or capitalization) effects of conventional bus accessibility remains to be explored. To fill these gaps, this study aims to investigate the role of accessibility to and by bus in determining housing prices in a bus-dependent city where urban transit service is offered mainly by a bus system rather than other transit systems. Using a database of 4966 condominium units in Xiamen, China, this study develops a battery of spatial econometric models to estimate global and local relationships between to-bus and by-bus accessibility and housing prices. The findings are as below: (1) to-bus accessibility (measured by the number of nearby bus stops) is positively associated with nearby housing prices; (2) by-bus accessibility (measured by travel time to city centers by bus and bus frequency) significantly affects nearby housing prices; (3) spatial heterogeneity exists in the price effects of bus accessibility; and (4) bus frequency exerts a larger price effect in the peripheral area than in the central. Finally, practical and policy implications are discussed.
The diffusion of super(125)I super(-) in compacted Gaomiaozi (GMZ) bentonite was investigated by capillary in-diffusion method. Apparent and effective diffusion coefficients and accessible porosity ...of iodide in GMZ bentonite were obtained, and the effect of ionic strength on diffusion parameters was studied. The apparent diffusion coefficients of iodide in compacted GMZ bentonite are in the range of 1.0-6.0 x 10 super(-10) m super(2) s super(-1) under the conditions of dry bulk density 1,500 kg m super(-3) and temperature 298 K, and increase with increasing ionic strength. This effect was explained through the analysis of microscopic structure of compacted bentonite. The iodide can only diffuse in unbound interparticle pore solution of compacted bentonite. The apparent diffusion coefficient is a function of accessible porosity which is decided by the thickness of diffusion double layer, and the thickness is in turn controlled by ionic strength.
Following China's example, on March 30, at the direction of US President Donald Trump, the Centers for Medicare & Medicaid Services (CMS), which oversees the nation's major public health programmes, ...issued what it termed “an unprecedented array of temporary regulatory waivers and new rules to equip the American healthcare system with maximum flexibility to respond to the 2019 Novel Coronavirus (COVID-19) pandemic”. The risk–benefit ratio for virtual health care has massively shifted and all the red tape has suddenly been cut.” In Italy, although all 20 regions had implemented national telemedicine guidelines as of 2018, hospital managers have been largely caught off guard by the explosion in digital demand, says Elena Sini, information officer for GVM Care & Research, a network of nine private hospitals in northern Italy. With mobile phone use now globally ubiquitous, technological barriers to the adoption of virtual health care are easily surmountable, even in the most resource-scarce settings, notes Alex Jadad, founder of the Centre for Global eHealth Innovation at the University of Toronto, ON, Canada, where he is the director of the Institute for Global Health Equity and Innovation.
Active accessibility Vale, David S.; Saraiva, Miguel; Pereira, Mauro
Journal of transport and land use,
01/2016, Letnik:
9, Številka:
1
Journal Article
Recenzirano
Odprti dostop
Active travel is enthusiastically promoted in the Western world due to its clear and demonstrated individual and collective benefits. While active travel has been shown to be associated with features ...of the built environment such as density and land-use mix, it is also associated with walking and cycling accessibility-which we designate as active accessibility. However, the measurement of active accessibility is not straightforward and it can represent significantly different features of the built environment. This paper presents an extensive review of published research that measures active accessibility. We classified the literature into four categories based on the methodology used: distance-based, gravity-based or potential, topological or infrastructure-based, and walkability and walk score-type measures. A fifth category was created to classify outliers consisting of distinct methodological approaches or hybrids of the four main categories. We argue that almost all of these methods have conceptual and computational limitations, and that there are inconsistencies in the use of concepts and terms. Furthermore, no sensitivity analysis was carried out on the selected parameters. We conclude by presenting some guidelines that might improve the value and clarity of active accessibility research, theory, and practice.
The two leading twist, quark helicity conserving generalized parton distributions (GPDs) of super(3)He, accessible, for example, in coherent deeply virtual Compton scattering (DVCS), are calculated ...in impulse approximation (IA). Their sum, at low momentum transfer, is found to be largely dominated by the neutron contribution, so that super(3)He is very promising for the extraction of the neutron information. Anyway, such an extraction could be not trivial. A technique, able to take into account the nuclear effects included in the IA analysis in the extraction procedure, even at moderate values of the momentum transfer, is proposed. Coherent DVCS arises therefore as a crucial experiment to access, for the first time, the neutron GPDs and the orbital angular momentum of the partons in the neutron.
Millions of elective surgical procedures were cancelled worldwide during the first wave of the COVID-19 pandemic.1 This enabled redistribution of staff and resources to provide care for patients with ...COVID-19 and addressed evidence that perioperative SARS-CoV-2 infection increases postoperative mortality.2 Although some hospitals established COVID-19-free surgical pathways to create safe elective surgery capacity,3 the National Health Service (NHS) in England has not returned to pre-pandemic elective surgery activity levels. ...we did not explore regional variation, which could arise as a result of differences in resource availability, accessibility of COVID-19-free surgical pathways, or baseline surgical case mix. ...we have not addressed differences between surgical specialties.
Public health websites are regarded as official references that citizens of any country rely on for domestic and individual health affairs. For people with disabilities, public health resources are ...often of greater importance; they additionally provide disability context-specific information. However, to leverage the benefits of such resources for the widest demographic groups, Web accessibility requirements should be met at an acceptable level (e.g., WCAG 2.0, Level AA). This study evaluates the accessibility of a number of public health websites from 25 countries. The choice of the selected websites is determined by the extent of the COVID-19 outbreak in the corresponding countries and their rank as of late April, 2020. Ultimately, this study aims at shedding light on the current situation of accessibility to health information and pinpointing the aspects where accessibility to information falls short in public health websites. Using different evaluation tools, the overall results show that the vast majority of public health websites, of a number of different countries, still have many critical accessibility barriers, especially with regards to the perception of information and operability of the interface items. The findings of this study suggest a need for major efforts toward ensuring accessible public health resources in most of the evaluated websites. As this pattern has repeatedly occurred in many relevant studies in different parts of the world, legislation along with educating Web developers regarding Web accessibility requirements and universal design principles become an urgent necessity.
The paper builds on the transport-related social exclusion (TRSE) literature and investigates how the insights provided by the Capability Approach can help to inform inclusive transport planning. To ...address the literature lack of conceptual clarity, we provided a framework that considers how individuals may be prevented from travelling and accessing valued opportunities and how this may lead to TRSE. Ten different dimensions of TRSE that individuals may experience are suggested. Although some dimensions were already proposed in past work, we contributed to this framework by expanding their scope and proposing a new dimension. The paper concludes that policies aimed at reducing TRSE should be concerned with increasing the capabilities of those in accessibility poverty to a sufficient level that enables individuals' participation in key opportunities of the society. We identified that not every accessibility measure is suitable for assessing TRSE, and the selection of measures must pay attention to their alignment with the idea of accessibility as a human capability. We recommend that conducting an aggregated analysis may be helpful to identify a suitable accessibility measure and to identify regions at risk of TRSE; however, to have a deep understanding of an individual's TRSE risk factors, a bottom-up analysis is necessary.
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