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  • 1
    Online Resource
    Online Resource
    SAGE Publications ; 2018
    In:  International Journal of Distributed Sensor Networks Vol. 14, No. 2 ( 2018-02), p. 155014771876181-
    In: International Journal of Distributed Sensor Networks, SAGE Publications, Vol. 14, No. 2 ( 2018-02), p. 155014771876181-
    Abstract: Encryption is one of the best methods to safeguard the security and privacy of an image. However, looking through encrypted data is difficult. A number of techniques for searching encrypted data have been devised. However, certain security solutions may not be used in smart devices in IoT-cloud because such solutions are not lightweight. In this article, we present a lightweight scheme that can enable a content-based search through encrypted images. In particular, images are represented using local features. We develop and validate a secure scheme for measuring the Euclidean distance between two feature vectors. In addition, we use a hashing method, namely, locality-sensitive hashing, to devise the searchable index. The use of an locality-sensitive hashing index increases the proficiency and effectiveness of a system, thereby allowing the retrieval of only relevant images with a minimum number of distance evaluations. Refining vector techniques are used to refine relevant results efficiently and securely. Our index construction process ensures that stored data and trapdoors are kept private. Our system also efficiently supports multi-user authentication by avoiding the expensive traditional method, which enables data owners to define who can search for a specific image. Compared with other similarity-based encryption methods predicated upon searchability, the option presented in this study offers superior search speed and storage efficiency.
    Type of Medium: Online Resource
    ISSN: 1550-1477 , 1550-1477
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 2192922-1
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  • 2
    Online Resource
    Online Resource
    SAGE Publications ; 2011
    In:  Building Services Engineering Research and Technology Vol. 32, No. 1 ( 2011-02), p. 21-34
    In: Building Services Engineering Research and Technology, SAGE Publications, Vol. 32, No. 1 ( 2011-02), p. 21-34
    Abstract: This paper presents a new decision-support framework and software platform for an integrated assessment of options for sustainable management of urban pollution. The framework involves three steps: (1) mapping the flow of pollutants associated with human activities in the urban environment; (2) modelling the fate and transport of pollutants; and (3) quantifying the environmental, health and socio-economic impacts of urban pollution. It comprises a suite of different models and tools to support sustainability appraisals including life cycle assessment, substance flow analysis, source and pollutants characterisation, pollutant fate and transport modelling, health impact analysis, ecological impact assessment, and multi-criteria decision analysis. The framework can be used at different levels, from simple screening studies to more detailed assessments. The paper describes the decision-support framework and outlines several case studies to demonstrate its application. The software tool is available free of charge at www.pureframework.org. Practical applications: The PUrE framework and software platform can be applied to assess and compare the sustainability of different technologies, products, human activities or policies. Example applications of the framework have so far included sustainability comparisons of technologies for thermal treatment of municipal solid waste; generation of electricity from coal and biomass; environmental and health impacts of a mixture of pollutants in Sheffield; the role of urban green space in reducing the levels of particulate matter in London and the impacts of environmental policy on legacy pollution in Avenmouth.
    Type of Medium: Online Resource
    ISSN: 0143-6244 , 1477-0849
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2011
    detail.hit.zdb_id: 2053866-2
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  • 3
    Online Resource
    Online Resource
    SAGE Publications ; 2015
    In:  Building Services Engineering Research and Technology Vol. 36, No. 5 ( 2015-09), p. 546-566
    In: Building Services Engineering Research and Technology, SAGE Publications, Vol. 36, No. 5 ( 2015-09), p. 546-566
    Abstract: The concept of an idealised optimal benchmark (IOB) is used in many engineering disciplines. An example of an IOB from the area of thermodynamics is the formula for evaluating the maximum possible efficiency of a heat engine. This paper explores the concept of an IOB in the area of elevator traffic analysis. It shows that the classical method of elevator traffic design by calculating the value of the round trip time is an example of an IOB; it also lists the assumptions that lie behind the formulae to illustrate this. It then extends the concept of an IOB to calculating the maximum performance of an elevator system when destination group control is applied under incoming traffic conditions. Formulae are derived for finding the minimum values of the expected number of stops ( S) and the highest reversal floor ( H) under destination group control during incoming traffic conditions. The assumption is that the L elevators in the group are sequenced (or rotated) to the L virtual sectors in the building, in order to equalise the handling capacities of the L sectors in the group. A numerical example is presented to illustrate the calculation of the maximum possible handling capacity and comparing it to the handling capacity that is achieved under conventional incoming traffic group control. Three numerical algorithms are also used to find the practical minimum values of H and S, the results of which are compared to the IOB using the equations derived above. Practical application: The concept and the accompanying formulae presented in this paper allow the elevator traffic designer to assess the improvement in the handling capacity of the elevator traffic system when he/she changes the group controller from a conventional group controller to a destination group controller. This improvement could be as much as 200%.
    Type of Medium: Online Resource
    ISSN: 0143-6244 , 1477-0849
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2015
    detail.hit.zdb_id: 2053866-2
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  • 4
    Online Resource
    Online Resource
    SAGE Publications ; 2016
    In:  Building Services Engineering Research and Technology Vol. 37, No. 5 ( 2016-09), p. 597-613
    In: Building Services Engineering Research and Technology, SAGE Publications, Vol. 37, No. 5 ( 2016-09), p. 597-613
    Abstract: This paper presents a new paradigm for assessing the effectiveness of up-peak elevator group control algorithms. The new paradigm can be very effective in providing a mechanism for objectively assessing and comparing elevator group control algorithms. It is built around three essential components: idealised optimal benchmarks; random scenario testing; and progressive introduction of reality. An idealised optimal benchmark is the starting point for calculating an analytical upper bound for the performance of any algorithm. It provides a reference for comparing the performance of all algorithms. Random scenario testing is used to subject the elevator group controller to a randomly generated scenario (usually of passenger origin-destination pairs). The response of the group controller to a randomly generated scenario is recorded, and more scenarios are generated and added. The overall response (e.g., average of all responses) of the group control algorithm to the large number of scenarios represents an objective measure of its efficacy. The random scenario testing is first carried out under idealised or partially idealised conditions. Under the third component of the new paradigm, the conditions are gradually made more realistic and better reflective of reality. This third element is called the progressive introduction of reality. Practical application: This paper presents to the designer of the elevator group controller a new paradigm for assessing the benchmark against which he/she is working. The designer can be confident that whatever up-peak group control algorithm he/she develops, it cannot exceed this upper benchmark. This has important practical applications in benchmarking the performance of up-peak group controllers. It can also be used by consultants and clients to mediate elevator group controller performance claims presented by elevator manufacturers.
    Type of Medium: Online Resource
    ISSN: 0143-6244 , 1477-0849
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
    detail.hit.zdb_id: 2053866-2
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  • 5
    In: Clinical Rehabilitation, SAGE Publications, Vol. 34, No. 10 ( 2020-10), p. 1282-1291
    Abstract: To evaluate the efficacy of a newly developed evidence-based low back pain (LBP) management smartphone application. Design: A double-blinded randomized controlled trial where participants randomly assigned to either an experimental group (EG) or a control group (CG). Setting: Governmental and private institutions. Participants: About 40 office workers, aged 30 to 55 years, had pain due to non-specific LBP  〉  3 on Visual Analogue Scale, and with pain chronicity  〉  3 months. Interventions: The EG received full version of the application ‘Relieve my back’ included evidence-based instructions and therapeutic exercises for LBP management, whereas the CG received placebo version included instructions about nutrition. Main measures: Primary outcome measures included pain measured by Visual Analogue Scale (VAS), disability measured by Oswestry Disability Index (ODI), and quality of life measured by Short-Form Health Survey (SF-12). Results: Following six weeks of using the application, compared to CG, the EG group demonstrated significant decrease in pain intensity (−3.45 (2.21) vs −0.11 (1.66), P  〈  0.001), in ODI score (−11.05 (10.40) vs −0.58 (9.0), P = 0.002), and significant increase in physical component of SF-12 (12.85 (17.20) vs −4.63 (12.04), P = 0.001). Conclusion: ‘Relieve my back’ application might be efficacious in reducing pain and disability and improving the quality of life of office workers with non-specific LBP.
    Type of Medium: Online Resource
    ISSN: 0269-2155 , 1477-0873
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2020
    detail.hit.zdb_id: 2028323-4
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  • 6
    Online Resource
    Online Resource
    SAGE Publications ; 2022
    In:  JDR Clinical & Translational Research Vol. 7, No. 2 ( 2022-04), p. 135-144
    In: JDR Clinical & Translational Research, SAGE Publications, Vol. 7, No. 2 ( 2022-04), p. 135-144
    Abstract: The aim of this 2-arm, parallel-group, 12-mo randomized clinical trial was to compare the effectiveness of semiannual application of 38% silver diamine fluoride (SDF) versus restorative treatment (RT) to manage cavitated caries lesions in primary teeth in a diverse population of children in Michigan. Methods: Children aged 2 to 10 y with at least 1 soft cavitated lesion (International Caries Detection and Assessment System 5 or 6) with no pain or signs/symptoms of irreversible pulpitis were recruited and randomly assigned to 2 intervention groups. One random lesion per child received 38% SDF (twice, at a 6-mo interval) or RT. All interventions and assessments were done by calibrated dentists. Primary outcome measures were clinical failure rates: minor (e.g., reversible pulpitis, active/soft lesion or progression, restoration loss or need for replacement/repair, secondary caries) and major (e.g., irreversible pulpitis, abscess, extraction). Parent, child, and provider acceptability was also assessed. Results: Ninety-eight children were enrolled and randomized, with a mean (SD) age of 4.8 y (1.8); 46% were female and their mean dmft + DMFT was 6.3 (3.9). Sixty-nine children were assessed at 12 mo (sample was within the planned 30% attrition rate). There were significantly more teeth with minor failures (SDF = 65%, RT = 23%, P ≤ 0.001) and major failures (SDF = 13%, RT = 3%, P ≤ 0.001) in the SDF group than the RT group; 74% of SDF-treated lesions were hard at 12 mo vs. 57% at 6 mo. Providers stated that SDF was easier, faster, and more preferable than RT ( P ≤ 0.001). No significant differences were found in parental satisfaction and acceptability. At 12 mo, children in the RT arm felt significantly ( P 〈 0.05) happier with their tooth appearance and stated that their visit to the dentist hurt less. Conclusion: At 12 mo, SDF-treated lesions had significantly more minor and major failures than RT, suggesting that SDF-treated teeth need to be closely monitored in a population at high caries risk (ClinicalTrials.gov NCT02601833). Knowledge of Transfer Statement: The results of this study can be used by clinicians when deciding whether to restore or apply silver diamine fluoride to cavitated lesions in primary teeth. Information on treatment outcomes and parent, child, and provider acceptability can help guide appropriate treatment decisions and need for monitoring.
    Type of Medium: Online Resource
    ISSN: 2380-0844 , 2380-0852
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2836491-0
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  • 7
    In: Journal of Scleroderma and Related Disorders, SAGE Publications, Vol. 8, No. 2 ( 2023-06), p. 137-150
    Abstract: Systemic sclerosis is an autoimmune condition characterized by a wide range of clinical presentations. Registries may serve to expand understanding about systemic sclerosis and aid in patient care and follow-up. The objective of this study was to analyze the prevalence of systemic sclerosis in a large cohort from the United Arab Emirates Systemic Sclerosis Registry and find the significant similarities and differences between the different subsets. All scleroderma patients in the United Arab Emirates were included in this multicenter national retrospective analysis. Data on demographics, comorbidities, serological characteristics, clinical aspects, and treatment were collected and analyzed, highlighting the most common traits identified. A total of 167 systemic scleroderma patients from diverse ethnic backgrounds were enrolled. Overall, 54.5% (91/167) of the patients were diagnosed with diffuse cutaneous systemic sclerosis, and 45.5% (76/167) with limited cutaneous systemic sclerosis. The prevalence of systemic sclerosis was 1.66 per 100,000 for the total registry and 7.78 per 100,000 for United Arab Emirates patients. Almost all patients in the diffuse cutaneous systemic sclerosis and limited cutaneous systemic sclerosis groups tested positive for the immunofluorescence antinuclear antibody. Antibodies against Scl-70 were significantly more associated with diffuse cutaneous systemic sclerosis, whereas anticentromere antibodies were significantly more associated with the limited cutaneous systemic sclerosis group ( p  〈  0.001). Sclerodactyly, shortness of breath, and digital ulcers were more common in diffuse cutaneous systemic sclerosis patients compared with the limited cutaneous systemic sclerosis subtype in terms of clinical symptoms and organ involvement. Telangiectasia was much more common in the limited cutaneous systemic sclerosis group. Furthermore, diffuse cutaneous systemic sclerosis patients had more lung fibrosis (interstitial lung disease) than limited cutaneous systemic sclerosis patients (70.5% vs 45.7%), and pulmonary arterial hypertension was twice as common in limited cutaneous systemic sclerosis patients as it was in diffuse cutaneous systemic sclerosis patients. Local registries are paramount to understanding the clinical/serological characteristics of scleroderma. This study emphasizes the importance of raising disease awareness and distinguishing between the various systemic sclerosis subsets to implement patient-tailored strategies for early detection, better management, and higher quality of care.
    Type of Medium: Online Resource
    ISSN: 2397-1983 , 2397-1991
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2023
    detail.hit.zdb_id: 2964332-6
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  • 8
    Online Resource
    Online Resource
    SAGE Publications ; 2016
    In:  Journal of Investigative Medicine Vol. 64, No. 4 ( 2016-03), p. 948-948
    In: Journal of Investigative Medicine, SAGE Publications, Vol. 64, No. 4 ( 2016-03), p. 948-948
    Type of Medium: Online Resource
    ISSN: 1081-5589 , 1708-8267
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
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  • 9
    Online Resource
    Online Resource
    SAGE Publications ; 2006
    In:  Journal of Investigative Medicine Vol. 54, No. 1 ( 2006-01-01), p. S111.4-S111
    In: Journal of Investigative Medicine, SAGE Publications, Vol. 54, No. 1 ( 2006-01-01), p. S111.4-S111
    Type of Medium: Online Resource
    ISSN: 1081-5589 , 1708-8267
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2006
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  • 10
    Online Resource
    Online Resource
    SAGE Publications ; 2018
    In:  Clinical Medicine Insights: Circulatory, Respiratory and Pulmonary Medicine Vol. 12 ( 2018-01-01), p. 117954841875802-
    In: Clinical Medicine Insights: Circulatory, Respiratory and Pulmonary Medicine, SAGE Publications, Vol. 12 ( 2018-01-01), p. 117954841875802-
    Abstract: Pulmonary hypertension (PH) is an underdiagnosed cause for chest pain in patients without significant coronary artery disease (CAD). Studies showed that enlarged pulmonary arterial (PA) and right ventricular chamber sizes correlate with the severity of PH. Therefore, we studied the association between chest pain, right ventricular dimensions (RVDs), and PA size on coronary coronary tomographic angiography (CCTA). Methods: The CCTA of 87 patients presenting with chest pain without evidence of obstructive CAD was examined. The PA diameter (PAD), right atrial dimension (RAD), and RVD were measured. A comparative control cohort included 31 patients who presented without cardiopulmonary complaints and underwent thoracic CT. The risk for obstructive sleep apnea (OSA) was assessed using STOP-BANG questionnaires. Results: Patients with chest pain without obstructive CAD showed markedly dilated right atrial and ventricular chambers compared with standard parameters (right atrium: 48 ± 6.4 mm; right ventricle long axis: 61 ± 9.5 mm). When comparing chest pain vs non-chest pain group, respectively, the mean PAD measured 25.92 ± 0.43 mm vs 22.89 ± 0.38 mm ( P  〈  .001), RAD2 measured 40.1423 ± 0.7108 mm vs 34.8800 ± 1.0245 mm ( P = .0048), and RVD2 measured 31.7729 ± 0.7299 mm vs 27.6379 ± 1.6178 mm ( P = .034). Chest pain was associated with higher PAD (odds ratio [OR]: 11.11, P  〈  .05) after adjusting for age, sex, body mass index, history of hypertension, hyperlipidemia, congestive heart failure, chronic obstructive pulmonary disease, OSA, and smoking. The chest pain group had a mean STOP-BANG score of 3.9 ± 1.8 in all patients, and 3.62 ± 0.20 in patients without known history of OSA, representing an elevated risk index for the disease. Conclusions: In patients presenting with chest pain without obstructive CAD on CCTA, there is a strong association between the presence of chest pain and enlarged PAD. They also represent a high-risk group for OSA.
    Type of Medium: Online Resource
    ISSN: 1179-5484 , 1179-5484
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 2583465-4
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