Cleveland Heights, Ohio, United States
Cleveland Heights, Ohio, United States

Time filter

Source Type

Lemoyne R.,Northern Arizona University | Tomycz N.,West Penn Allegheny Health System | Mastroianni T.,Pittsburgh | McCandless C.,Behavioral Science | And 2 more authors.
Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS | Year: 2015

Essential tremor (ET) is a highly prevalent movement disorder. Patients with ET exhibit a complex progressive and disabling tremor, and medical management often fails. Deep brain stimulation (DBS) has been successfully applied to this disorder, however there has been no quantifiable way to measure tremor severity or treatment efficacy in this patient population. The quantified amelioration of kinetic tremor via DBS is herein demonstrated through the application of a smartphone (iPhone) as a wireless accelerometer platform. The recorded acceleration signal can be obtained at a setting of the subject's convenience and conveyed by wireless transmission through the Internet for post-processing anywhere in the world. Further post-processing of the acceleration signal can be classified through a machine learning application, such as the support vector machine. Preliminary application of deep brain stimulation with a smartphone for acquisition of a feature set and machine learning for classification has been successfully applied. The support vector machine achieved 100% classification between deep brain stimulation in 'on' and 'off' mode based on the recording of an accelerometer signal through a smartphone as a wireless accelerometer platform. © 2015 IEEE.


Chung K.,Operations | Jang K.,University of California at Berkeley | Madanat S.,University of California at Berkeley | Washington S.,Queensland University of Technology
Transportation Research Part A: Policy and Practice | Year: 2011

In previous research (Chung et al., 2009), the potential of the continuous risk profile (CRP) to proactively detect the systematic deterioration of freeway safety levels was presented. In this paper, this potential is investigated further, and an algorithm is proposed for proactively detecting sites where the collision rate is not sufficiently high to be classified as a high collision concentration location but where a systematic deterioration of safety level is observed. The approach proposed compares the weighted CRP across different years and uses the cumulative sum (CUSUM) algorithm to detect the sites where changes in collision rate are observed. The CRPs of the detected sites are then compared for reproducibility. When high reproducibility is observed, a growth factor is used for sequential hypothesis testing to determine if the collision profiles are increasing over time. Findings from applying the proposed method using empirical data are documented in the paper together with a detailed description of the method. © 2011 Elsevier Ltd.


Ponsky T.A.,Akron Children’s Hospital | Schwachter M.,Operations | Parry J.,Operations | Rothenberg S.,Rocky Mountain Hospital for Children | Augestad K.M.,University of Tromsø
European Journal of Pediatric Surgery | Year: 2014

Abstract With decreased resident experience during training and the constant evolution of new surgical techniques, surgeons are at risk for complications during the early part of the learning curve. Mentorship by experienced surgeons may mitigate these complications. The availability of such advanced telepresence technology makes it logical that this will be used as part of the model to proctor, mentor, and train practicing surgeons. Here, we review the current state of telementoring. © 2014 Georg Thieme Verlag KG.


PubMed | Operations and Akron Children’s Hospital
Type: Journal Article | Journal: European journal of pediatric surgery : official journal of Austrian Association of Pediatric Surgery ... [et al] = Zeitschrift fur Kinderchirurgie | Year: 2014

Telemedicine is a broad term and has recently become a household term in the medical field. However, there are many interpretations as to what the term telemedicine means. There are many facets to telemedicine and here we describe all of the elements of telemedicine, a glossary of terms, and how they relate to pediatric surgery.


PubMed | Operations, Akron Children’s Hospital, University of Tromsø and Rocky Mountain Hospital for Children
Type: Journal Article | Journal: European journal of pediatric surgery : official journal of Austrian Association of Pediatric Surgery ... [et al] = Zeitschrift fur Kinderchirurgie | Year: 2014

With decreased resident experience during training and the constant evolution of new surgical techniques, surgeons are at risk for complications during the early part of the learning curve. Mentorship by experienced surgeons may mitigate these complications. The availability of such advanced telepresence technology makes it logical that this will be used as part of the model to proctor, mentor, and train practicing surgeons. Here, we review the current state of telementoring.


Lee J.,Abu Dhabi University | Chung K.,Operations | Chung K.,Korea University | Kang S.,Korea University
Accident Analysis and Prevention | Year: 2016

Two different methods for addressing the regression to the mean phenomenon (RTM) were evaluated using empirical data: 1 The Empirical Bayes (EB) method, which combines observed collision data and Safety Performance Functions (SPF) to estimate expected collision frequency of a site.2 Continuous Risk Profile (CRP), which estimates true collision profile constructed after filtering out the noise.Data from 110 miles of freeway located in California were used to evaluate the performance of the EB and CRP methods in addressing RTM. CRP outperformed the EB method in estimating collision frequencies in selected high collision concentration locations (HCCLs). Findings indicate that the performance of the EB method can be markedly affected when SPF is biased, while the performance of CRP remains much less affected. The CRP method was more effective in addressing RTM. © 2016


Guld J.,Operations | Bradshaw W.M.,ABSG Consulting
28th Center for Chemical Process Safety International Conference 2013, CCPS - Topical Conference at the 2013 AIChE Spring Meeting and 9th Global Congress on Process Safety | Year: 2013

Maersk FPSOs operates five offshore assets, including floating oil production and storage ships, in locations ranging from the North Sea to the South Atlantic Ocean. Like many operators in the oil and gas industry, Maersk FPSOs has long understood the importance of identifying, understanding, and managing risks associated with major accidents. But it's difficult to manage something without feedback; many would say it's impossible. Like other operators, Maersk FPSOs struggled to measure process safety performance, and more importantly to help everyone in the organization understand the linkage between the activities they do on a day-in, day-out basis and major accident risk. In addition, senior management struggled to know if process safety performance is "good enough." Other companies have clearly proven that the lack of major accidents is not a reliable predictor of when the next one might occur. Thus, the lack of major accidents at Maersk FPSOs could not be taken as proof that process safety performance was acceptable; it might have been improving, stagnating, or possibly degrading. Therefore, about 2 years ago, Maersk FPSOs embarked on a path to create an effective tool to monitor process safety; one that focused on measuring "what we do," rather than standards or policies that focused on "what we say we should do" or "what we know we should do." The core of the effort is a dashboard with a series of layered process safety metrics using displays on video monitors located in prominent locations in offices, production areas, and other areas where the indicators provide maximum visibility for Maersk FPSO employees. The aim of this effort is to ensure that process safety indicators not only are reported to senior management, but, more importantly, are also seen and used on the producing units by front line employees whose actions directly influence/control the process safety performance. The metrics chosen by Maersk FPSOs "roll up" so the top of the metrics pyramid is linked to measurable activities, thus providing a clear picture linking what Maersk FPSOs employees and contractors do (or don't do) and what happens in the workplace to Maersk FPSOs' risk profile. Since launching this initiative, Maersk FPSOs has seen measurable improvement in many of the leading indicators. More importantly, the rate and severity of precursor events have fallen as leading indicators have improved.


Sudheer Reddy K.,Acharya Nagarjuna University | Kantha Reddy M.,Operations | Sitaramulu V.,Swarana Bharathi Institute of Technology
2013 International Conference on Information Communication and Embedded Systems, ICICES 2013 | Year: 2013

Web Usage Mining (WUM) is one of the categories of data mining technique that identifies usage patterns of the web data, so as to perceive and better serve the requirements of the web applications. The working of WUM involves three steps - preprocessing, pattern discovery and analysis. The first step in WUM - Preprocessing of data is an essential activity which will help to improve the quality of the data and successively the mining results. This research paper studies and presents several data preparation techniques of access stream even before the mining process can be started and these are used to improve the performance of the data preprocessing to identify the unique sessions and unique users. The methods proposed will help to discover meaningful pattern and relationships from the access stream of the user and these are proved to be valid and useful by various research tests. The paper is concluded by proposing the future research directions in this space. © 2013 IEEE.


Trim R.S.,Operations | Jentzen J.,University of Michigan | Penn G.,Milwaukee County Medical Examiners Office
American Journal of Forensic Medicine and Pathology | Year: 2013

Opinions based on toxicology results are dependent, in part, upon the quality of the specimen's acquisition, storage, and chain of custody. The responsibility for these factors is often delegated to tissue and eye bank technicians. These technicians are not employees of the medical examiner (ME)'s office and may have no documented training related to the proper acquisition and handling of retained toxicology specimens. Medical examiners and coroners often request tissue recovery technicians to provide them with these toxicology samples when the tissue recovery is performed before autopsy. This practice helps facilitate donation and is convenient for the ME, but there may be unexpected implications for both the technicians and the ME that deserve further consideration. This article highlights the relevant issues in the postmortem recovery of biological samples for toxicology analysis and makes recommendations for the practice. © 2013 by Lippincott Williams & Wilkins.


Broyles R.,Operations | Rodden L.,CSL Behring LLC | Riley P.,CSL Behring LLC | Berger M.,CSL Behring LLC
Postgraduate Medicine | Year: 2013

Aims: We reviewed the intravenous immunoglobulin G (IVIG) dispensing records of a specialty pharmacy to characterize the IVIG treatment regimens used for chronic inflammatory demyelinating polyneuropathy (CIDP) and myasthenia gravis (MG) in community practice. Methods: Anonymized records were selected based on International Classification of Diseases, Ninth Revision (ICD-9) codes and IVIG treatment for. 1 month. Each patient's immunoglobulin G (IgG) dose per infusion (mg/kg/dose) was multiplied by the number of doses per month (30.5 days divided by the dosing interval in days) to yield the total monthly dose (mg/kg/month). Data were analyzed and summarized using descriptive statistics. Results: Forty-six patients (median age, 56.5 years; range, 8-86 years) fulfilled the inclusion criteria. Thirty-one patients with CIDP received IgG at 7- to 92-day intervals (mean [standard deviation (SD)], 28 [16] days). The mean (SD) IgG dose was 75 (60) g/dose, equivalent to 866 (623) mg/kg/dose and 1145 (778) mg/kg/month. Six patients with stable MG received IVIG or subcutaneous IgG at 3.5- to 61-day intervals (28 [20] days) at a mean (SD) IgG dose of 39 (15) g/dose, equivalent to 405 (108) mg/kg/dose and 783 (680) mg/kg/month. Nine patients with MG with acute exacerbations received IgG at 7- to 42-day intervals (22 [12] days) at a mean (SD) dose of 40 (21) g/dose, equivalent to 403 (172) mg/kg/dose and 641 (288) mg/kg/month. One patient with CIDP and 4 patients with MG were treated with weekly subcutaneous IgG injections. Conclusion: Although patients with CIDP and MG are treated with mean total monthly IgG doses similar to those approved by the US Food and Drug Administration, the individual doses and intervals vary considerably, suggesting that physicians may be adjusting IgG dosing according to each patient's clinical condition and treatment response. Further study is necessary to determine the criteria used to adjust IgG treatment regimens and whether these adjustments optimize clinical outcomes while limiting overall costs. © Postgraduate Medicine.

Loading Operations collaborators
Loading Operations collaborators