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Dataset to support the article: Evaluation of in-shoe plantar pressure and shear during walking for diabetic foot ulcer prevention
No full textThe dataset is associated with an article entitled 'Evaluation of in-shoe plantar pressure and shear during walking for diabetic foot ulcer prevention' to be published in Journal of Wound Care
The data is available on request only to bone fide researchers. Please complete the attached request form and return to [email protected]</span
Datasest in support of the publication 'A wearable insole system to measure plantar pressure and shear for people with diabetes'
No full textDataset in support of the journal article to be published in the journal Sensors
This dataset if available 'on request only' under a CC-BY-NC-ND licence. Please complete and return the attached form.
Description:
The excel files contain all experimental data used for generating Figure 4, Figure 5, Figure 8, Figure 9, Figure 10 and Table 1
Figure 4: (a) Applied static pressure from the Instron mechanical test machine, as a function of time. Measured pressure from the insole system and applied pressure from the test machine, obtained from the (b) static and (c) dynamic pressure test.
Figure 5: (a) Applied static shear stress from the mechanical test machine, as a function of time. Measured shear stress from the insole system and applied shear stress from the test machine, obtained from the (b) static and (c) dynamic shear test.
Figure 8: (a) Pressure, (b) medial-lateral (ML) shear and (c) anterior-posterior (AP) shear stress as a function of time from the heathy participant wearing a trainer.
Figure 9: (a) Mean peak pressure and (b) medial-lateral (ML) and (c) anterior-posterior (AP) shear stress obtained over gait cycles, with three types of footwear.
Figure 10: Mean peak plantar pressure distribution during walking obtained using XSENSOR system with and without the sensorised insole. The four sensing locations are highlighted to allow regional peak pressure value comparison.
Table 1: Peak pressure safety evaluation for 5 participants with diabetes. MPP: Mean Peak Pressure values for each participant represent the average of 10 mid-gait steps. Effect calculated as absolute pressure with sensorised insole MPP minus Without Insole MPP (S-W)</span
The biomechanics of foot and ankle problems after stroke and the effects of orthotics on such problems
No full textStroke is the leading cause of adult disability and -50% of people with stroke suffer foot deformities which influence walking. The aim of this study was to investigate foot and ankle biomechanics, posture, multi-segment kinematics and plantar pressure in people with stroke and explore the possible causes and functional consequences of any abnormalities. A cross-sectional survey of the static foot posture in 72 people with stroke showed that one-third had abnormal and asymmetrical foot posture with almost equal numbers having pronated and supinated affected foot associated with limited walking ability. Stance phase foot and ankle biomechanics were quantified using a multisegment foot model on the affected side of twenty stroke and fifteen healthy age-matched subjects. The role of neuromuscular impairments in biomechanical abnormalities was characterised by concurrently measuring the electromyography and spasticity of major posterior and anterior lower leg muscles and the dynamometric measures of plantarflexor stiffness, plantarflexor and dorsiflexor strength and ankle proprioception. The following abnormalities in people with stroke were found: Reduced range of motion across most segments and planes A more pronated foot A less supinated foot during propulsion Deficit in the foot rocker function Disruption in the timing of joint motion Change in the coupling mechanisms Greater variability The changes in pronation and supination were associated with limited walking ability and soleus spasticity and plantarflexor stiffness. The work also investigated the effects of lateral wedges orthoses on the eight lower leg muscles to understand the interactions between foot and ankle biomechanics and neuromuscular function. In eight healthy subjects, there was a trend for peak muscle length, excursion and lengthening velocity to increase when wearing lateral wedges orthoses. The observed changes strongly support a follow-on study in a stroke population to explore the effects of lateral wedge orthoses on muscle length and lengthening characteristicsEThOS - Electronic Theses Online ServiceGBUnited Kingdo
A wearable insole system to measure plantar pressure and shear for people with diabetes
Full text linkPressure coupled with shear stresses are the critical external factors for diabetic foot ulceration assessment and prevention. To date, a wearable system capable of measuring in-shoe multi-directional stresses for out-of-lab analysis has been elusive. The lack of an insole system capable of measuring plantar pressure and shear hinders the development of an effective foot ulcer prevention solution that could be potentially used in a daily living environment. This study reports the development of a first-of-its-kind sensorised insole system and its evaluation in laboratory settings and on human participants, indicating its potential as a wearable technology to be used in real-world applications. Laboratory evaluation revealed that the linearity error and accuracy error of the sensorised insole system were up to 3% and 5%, respectively. When evaluated on a healthy participant, change in footwear resulted in approximately 20%, 75% and 82% change in pressure, medial–lateral and anterior–posterior shear stress, respectively. When evaluated on diabetic participants, no notable difference in peak plantar pressure, as a result of wearing the sensorised insole, was measured. The preliminary results showed that the performance of the sensorised insole system is comparable to previously reported research devices. The system has adequate sensitivity to assist footwear assessment relevant to foot ulcer prevention and is safe to use for people with diabetes. The reported insole system presents the potential to help assess diabetic foot ulceration risk in a daily living environment underpinned by wearable pressure and shear sensing technologies
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Impes modeling of volumetric dry gas reservoirs with mobile water
Full text linkAs the importance of natural gas as a resource increases, the importance of volumetric dry gas reservoirs with mobile water as the dominant gas reservoir types will also increase.
This research developed an efficient, user-friendly simulation program specifically designed to model two-phase flow of gas and water in these reservoirs. Since fluid compression and viscous forces are the dominant parameters that control fluid movement in a dry gas reservoir, we used the Implicit Pressure and Explicit Saturation (IMPES) formulation of flow equations in which neither gravity nor capillary pressure terms are pertinent. Therefore, the IMPES approach showed greater stability for all cases considered in this work. The developed simulator is a Visual Basic Application (VBA) code for which the users can obsereve the results in a pertinent Microsoft Excel file.
This program allows users to study the depletion behavior of volumetric dry gas reservoirs with mobile water as efficiently and accurately as is now possible in more expensive commercially available reservoir simulators. The program was validated by comparing the results with a well-recognized commercial reservoir simulator (CMG). The results of a battery of tests of this simulator matched very well with results of the commercial reservoir simulator for all tested schemes including different simulation plans; reservoir, grid and fluid data; and well configurations.
The observed applicability of the program suggests when dealing with volumetric dry gas reservoirs with mobile water there is no need to employ more expensive commercial reservoir simulators, as the program can reliably be used for any simulation scheme of this case. Furthermore, the program can later be applied in a more robust reservoir simulator as the part that handles dry gas cases
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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