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Baltimore, MD, United States

Ikuma L.,Louisiana State University | Handal C.,Baton Inc
Industrial Engineer | Year: 2013

Findings from measuring situation awareness while using a petrochemical process simulator, or a virtual plant is discussed. To test how interface design affects performance and situation awareness, the study used two markedly different interfaces that represented the same virtual plant. Participants were 12 university students who completed three 30-minute simulation sessions using the virtual plant with one of those interfaces. The interfaces tested were part of a virtual plant and were manipulated to display good and poor interface designs. Each participant answered nine questions per 30-minute session, which were divided into three periods of three questions each. The good and poor interfaces had differential effects (interaction effects) on situation awareness depending on the workload level. Perception among participants remained fairly consistent when they used the good interface despite increasing workload levels. However, when their workloads grew more difficult while using the poor interface, their perception decreased. Source

Morgan Jr. M.L.,Baton Inc
International Conference on Nuclear Engineering, Proceedings, ICONE | Year: 2012

This paper establishes a method for integrating real-time and historic plant data into thermal performance characterization tools. Many nuclear plants utilize data collection software that integrates with off the shelf spreadsheet programs. It is shown here that standard heat balance and condenser performance models can be constructed within the spreadsheet programs to utilize plant data in an effort to develop a strong understanding of overall Balance of Plant (BOP) performance. This method also allows the user to create operational scenarios to predict performance and to illustrate the potential for gain in electrical generation. © 2012 by ASME. Source

Saller S.P.,Colorado State University | Saller S.P.,Baton Inc | Ronayne M.J.,Colorado State University | Long A.J.,U.S. Geological Survey
Hydrogeology Journal | Year: 2013

Karst aquifers exhibit a dual flow system characterized by interacting conduit and matrix domains. This study evaluated the coupled continuum pipe-flow framework for modeling karst groundwater flow in the Madison aquifer of western South Dakota (USA). Coupled conduit and matrix flow was simulated within a regional finite-difference model over a 10-year transient period. An existing equivalent porous medium (EPM) model was modified to include major conduit networks whose locations were constrained by dye-tracing data and environmental tracer analysis. Model calibration data included measured hydraulic heads at observation wells and estimates of discharge at four karst springs. Relative to the EPM model, the match to observation well hydraulic heads was substantially improved with the addition of conduits. The inclusion of conduit flow allowed for a simpler hydraulic conductivity distribution in the matrix continuum. Two of the high-conductivity zones in the EPM model, which were required to indirectly simulate the effects of conduits, were eliminated from the new model. This work demonstrates the utility of the coupled continuum pipe-flow method and illustrates how karst aquifer model parameterization is dependent on the physical processes that are simulated. © 2013 Springer-Verlag Berlin Heidelberg. Source

Jortberg B.T.,Aurora University | Fleming M.O.,Baton Inc | Fleming M.O.,Louisiana State University | Fleming M.O.,Tulane University
Journal of the Academy of Nutrition and Dietetics | Year: 2014

Health care in the United States is the most expensive in the world; however, most citizens do not receive quality care that is comprehensive and coordinated. To address this gap, the Institute for Healthcare Improvement developed the Triple Aim (ie, improving population health, improving the patient experience, and reducing costs), which has been adopted by patient-centered medical homes and accountable care organizations. The patient-centered medical home and other population health models focus on improving the care for all people, particularly those with multiple morbidities. The Joint Principles of the Patient-Centered Medical Home, developed by the major primary care physician organizations in 2007, recognizes the key role of the multidisciplinary team in meeting the challenge of caring for these individuals. Registered dietitian nutritionists (RDNs) bring value to this multidisciplinary team by providing care coordination, evidence-based care, and quality-improvement leadership. RDNs have demonstrated efficacy for improvements in outcomes for patients with a wide variety of medical conditions. Primary care physicians, as well as several patient-centered medical home and population health demonstration projects, have reported the benefits of RDNs as part of the integrated primary care team. One of the most significant barriers to integrating RDNs into primary care has been an insufficient reimbursement model. Newer innovative payment models provide the opportunity to overcome this barrier. Inorder to achieve this integration, the Academy of Nutrition and Dietetics and RDNs must fully understand and embrace the opportunities and challenges that the new health care delivery and payment models present, and be prepared andempowered to lead the necessary changes. All stakeholders within the health care system need to more fully recognize andembrace the value and multidimensional role of the RDN on the multidisciplinary team. The Academy's Patient-Centered Medical Home/Accountable Care Organizations Workgroup Report provides a framework for the Academy, its members, and key partners to use to achieve this goal. © 2014 Academy of Nutrition and Dietetics. Source

Smith C.L.,Baton Inc
Chemical Engineering | Year: 2011

The control capabilities of modern process control systems are discussed. Automation practices within the process industries largely involve four types of control architectures, DCS (distributed control system), PLC (programmable logic controller), microprocessor-based single-loop controllers, and PC-based controls. DCS products were designed with those working in instrumentation and control in mind. The DCS suppliers are now taking on the middle ground and introducing terms such as management, enterprise, and others into their product descriptions. The PLC was the first digital technology to compete on a cost basis with conventional technology. Most PLC-based control systems start out as a single PLC, often with only one PC-based operator interface connected through Ethernet. MPC has proven very successful in continuous commodity processes, with applications in oil refining leading the way. It can be implemented in a single-loop controller to replace the PID. Source

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