839 research outputs found

    IoT Ignorance is Digital Forensics Research Bliss: A Survey to Understand IoT Forensics Definitions, Challenges and Future Research Directions

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    Interactions with IoT devices generates vast amounts of personal data that can be used as a source of evidence in digital investigations. Currently, there are many challenges in IoT forensics such as the difficulty in acquiring and analysing IoT data/devices and the lack IoT forensic tools. Besides technical challenges, there are many concepts in IoT forensics that have yet to be explored such as definitions, experience and capability in the analysis of IoT data/devices and current/future challenges. A deeper understanding of these various concepts will help progress the field. To achieve this goal, we conducted a survey which received 70 responses and provided the following results: (1) IoT forensics is a sub-domain of digital forensics, but it is undecided what domains are included; (2) practitioners are already having to examine IoT devices even though they felt undertrained; (3) requirements for technical training, software and education are non-existent; (4) high priority on research should be to develop IoT forensic tools, how to preserve volatile data and methods to identify and acquire data from the cloud; (5) improvements to forensic tools should be aimed at data acquisition (imaging) and device disassembly / forensic process; (6) practitioners’ perspectives on research direction differ slightly to non-practitioners in that the focus should be on breaking encryption on IoT devices rather than focus on cloud data forensics; (7) future research should focus on developing initiatives and strategies to overcome data encryption and trail obfuscation in the cloud and ongoing development of IoT forensic tools. The responses to the survey question on the definition of IoT forensics helped us formulate a working definition. This has provided a clearer understanding of the subject, which will help further advance the research area

    Building Pathways of Possibility from Criminal Justice to College: College Initiative as a Catalyst Linking Individual and Systemic Change

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    Across the United States, communities, especially marginalized and low income communities, face challenges resulting from the “school-to-prison pipeline”—a continuum of conditions increasing the probability that people from such marginalized communities, particularly black men, will find themselves in prison rather than college.1 Dismantling this pipeline has become a significant national focus of advocates and policy makers. In New York City, a network has emerged in the last ten years to focus on building a new pipeline from criminal justice to college. This network focuses on rebuilding the lives of the over 70 thousand people who have fallen into the school-to-prison pipeline. These reentry organizations have identified higher education as a core strategy for reclaiming hope and possibility for people who have become enmeshed in the criminal justice system. This case study documents the strategies and systemic impacts of College Initiative (“CI”), an innovative organization focused on enabling people with criminal justice involvement to enter and succeed in higher education. CI, in collaboration with a larger reentry network, is building pathways of possibility from criminal justice into and through college

    Auditory cueing strategy for stride length and cadence modification: a feasibility study with healthy adults

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    People with Parkinson's Disease experience gait impairments that significantly impact their quality of life. Visual, auditory, and tactile cues can alleviate gait impairments, but they can become less effective due to the progressive nature of the disease and changes in people's motor capability. In this study, we develop a human-in-the-loop (HIL) framework that monitors two key gait parameters, stride length and cadence, and continuously learns a person-specific model of how the parameters change in response to the feedback. The model is then used in an optimization algorithm to improve the gait parameters. This feasibility study examines whether auditory cues can be used to influence stride length in people without gait impairments. The results demonstrate the benefits of the HIL framework in maintaining people's stride length in the presence of a secondary task.Comment: 6 pages, 4 figures; the paper is accepted and presented at EMBC 202

    Time-Location Patterns of a Population Living in an Air Pollution Hotspot

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    This study characterized the time-location pattern of 107 residents living in air pollution hotspots, the Waterfront South and Copewood/Davis Streets communities in Camden, NJ. Most residents in the two communities are minority and impoverished individuals. Results showed that employment status played the fundamental role in determining time-location patterns of this study population, and the variations of time-location pattern by season and by day-type were partially attributed to employment status. Compared to the National Human Activity Pattern Survey, the Camden cohort spent significantly more time outdoors (3.8 hours versus 1.8 hours) and less time indoors (19.4 hours versus 20.9 hours) than the general US population, indicating a higher risk of exposure to ambient air pollution for the Camden cohort. The findings of the study are important for understanding exposure routes and sources for the socioeconomically disadvantaged subgroup and ultimately help develop effective strategies to reduce community exposure to ambient air pollution in “hotspots”

    Improving the learning of clinical reasoning through computer-based cognitive representation

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    Objective: Clinical reasoning is usually taught using a problem-solving approach, which is widely adopted in medical education. However, learning through problem solving is difficult as a result of the contextualization and dynamic aspects of actual problems. Moreover, knowledge acquired from problem-solving practice tends to be inert and fragmented. This study proposed a computer-based cognitive representation approach that externalizes and facilitates the complex processes in learning clinical reasoning. The approach is operationalized in a computer-based cognitive representation tool that involves argument mapping to externalize the problem-solving process and concept mapping to reveal the knowledge constructed from the problems. Methods: Twenty-nine Year 3 or higher students from a medical school in east China participated in the study. Participants used the proposed approach implemented in an e-learning system to complete four learning cases in 4 weeks on an individual basis. For each case, students interacted with the problem to capture critical data, generate and justify hypotheses, make a diagnosis, recall relevant knowledge, and update their conceptual understanding of the problem domain. Meanwhile, students used the computer-based cognitive representation tool to articulate and represent the key elements and their interactions in the learning process. Results: A significant improvement was found in students’ learning products from the beginning to the end of the study, consistent with students’ report of close-to-moderate progress in developing problem-solving and knowledge-construction abilities. No significant differences were found between the pretest and posttest scores with the 4-week period. The cognitive representation approach was found to provide more formative assessment. Conclusions: The computer-based cognitive representation approach improved the learning of clinical reasoning in both problem solving and knowledge construction

    Developmental expression of survivin during embryonic submandibular salivary gland development

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    BACKGROUND: The regulation of programmed cell death is critical to developmental homeostasis and normal morphogenesis of embryonic tissues. Survivin, a member of the inhibitors of apoptosis protein (IAP) family primarily expressed in embryonic cells, is both an anti-apoptosis and a pro-survival factor. Since our previous studies have demonstrated the importance of apoptosis during embryonic submandibular salivary gland (SMG) development, we postulated that survivin is a likely mediator of SMG epithelial cell survival. RESULTS: We investigated the developmental expression of survivin in Pseudoglandular (~ E14), Canalicular (~ E15) and Terminal Bud (~ E17) Stage SMGs. We report a significant 26% increase in transcript levels between the Canalicular and Terminal Bud Stages. Immunohistochemical studies demonstrate nuclear-localized survivin protein in epithelial cells bounding forming lumina in Canalicular and Terminal Bud Stage SMGs. CONCLUSIONS: Survivin is known to be a pro-survival and anti-apoptotic factor. Given that survivin translocation into the nucleus is required for the induction of entry into the cell cycle and the inhibition of apoptosis, our demonstration of nuclear-localized survivin protein in presumptive ductal and proacinar lumen-bounding cells suggests that survivin may be a key mediator of embryonic SMG epithelial cell survival

    Reimbursement for Emergency Department Electrocardiography and Radiograph Interpretations: What Is It Worth for the Emergency Physician

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    Background: Physician reimbursement laws for diagnostic interpretive services require that only those services provided contemporaneously and /or contribute directly to patient care can be billed for. Despite these regulations, cardiologists and radiologists in many hospitals continue to bill for ECG and plain film diagnostic services performed in the emergency department (ED). The reimbursement value of this care, which is disconnected in time and place from the ED patient encounter, is unknown. In a California community ED with a 32,000 annual census, the emergency physicians (EPs) alone, by contract, bill for all ECG readings and plain film interpretations when the radiologists are not available to provide contemporaneous readings.Objectives: To determine the impact of this billing practice on actual EP reimbursement we undertook an analysis that allows calculation of physician reimbursement from billing data.Methods: An IRB-approved analysis of 12 months of billing data cleansed of all patient identifiers was undertaken for 2003. From the data we created a descriptive study with itemized breakdown of reimbursement for radiograph and ECG interpretive services (procedures) and the gross resultant physician income.Results: In 2003 EPs at this hospital treated patients during 32,690 ED visits. Total group income in 2003 for radiographs was 173,555and173,555 and 91,025 for ECGs, or 19/EPhourand19/EP hour and 6/EP hour respectively. For the average full-time EP, the combined total is 2537/monthor2537/month or 30,444 per annum, per EP. This is 8/EDvisit(averagedacrossallpatients).Conclusion:AsEPreimbursementischallengedbyrisingmalpracticepremiums,uninsuredpatients,HMOcontracts,unfundedgovernmentmandatesandstatebudgetaryshortfalls,EPsareseekingtopreservetheirpatientservicesandresultantincome.Theyshouldalsobereimbursedforthoseservicesandtheliabilitythattheyincur.ThereimbursementvalueofECGsandplainfilminterpretationstothepracticingEPissubstantial.IntheEDstudied,itrepresents8/ED visit (averaged across all patients).Conclusion: As EP-reimbursement is challenged by rising malpractice premiums, uninsured patients, HMO contracts, unfunded government mandates and state budgetary shortfalls, EPs are seeking to preserve their patient services and resultant income. They should also be reimbursed for those services and the liability that they incur. The reimbursement value of ECGs and plain film interpretations to the practicing EP is substantial. In the ED studied, it represents 30,444 gross income per full-time EP annually. Plain film interpretation services produce three times the hourly revenue of ECG reading at the hospital studied.[WestJEM. 2009;10:178-183.
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