Science.gov

Sample records for spillway case study

  1. Synthesis of Sensor Fish Data for Assessment of Fish Passage Conditions at Turbines, Spillways, and Bypass Facilities – Phase 1: The Dalles Dam Spillway Case Study

    SciTech Connect

    Deng, Zhiqun; Serkowski, John A.; Fu, Tao; Carlson, Thomas J.; Richmond, Marshall C.

    2007-12-31

    This report summarizes the characterization of spillway passage conditions at The Dalles Dam in 2006 and the effort to complete a comprehensive database for data sets from The Dalles Dam spillway Sensor Fish and balloon-tagged live fish experiments. Through The Dalles Dam spillway case study, Pacific Northwest National Laboratory (PNNL) researchers evaluated the database as an efficient means for accessing and retrieving system-wide data for the U.S Army Corps of Engineers (USACE).

  2. The Dalles Dam, Columbia River: Spillway Improvement CFD Study

    SciTech Connect

    Cook, Chris B.; Richmond, Marshall C.; Serkowski, John A.

    2006-06-01

    This report documents development of computational fluid dynamics (CFD) models that were applied to The Dalles spillway for the US Army Corps of Engineers, Portland District. The models have been successfully validated against physical models and prototype data, and are suitable to support biological research and operations management. The CFD models have been proven to provide reliable information in the turbulent high-velocity flow field downstream of the spillway face that is typically difficult to monitor in the prototype. In addition, CFD data provides hydraulic information throughout the solution domain that can be easily extracted from archived simulations for later use if necessary. This project is part of an ongoing program at the Portland District to improve spillway survival conditions for juvenile salmon at The Dalles. Biological data collected at The Dalles spillway have shown that for the original spillway configuration juvenile salmon passage survival is lower than desired. Therefore, the Portland District is seeking to identify operational and/or structural changes that might be implemented to improve fish passage survival. Pacific Northwest National Laboratory (PNNL) went through a sequence of steps to develop a CFD model of The Dalles spillway and tailrace. The first step was to identify a preferred CFD modeling package. In the case of The Dalles spillway, Flow-3D was as selected because of its ability to simulate the turbulent free-surface flows that occur downstream of each spilling bay. The second step in development of The Dalles CFD model was to assemble bathymetric datasets and structural drawings sufficient to describe the dam (powerhouse, non-overflow dam, spillway, fish ladder entrances, etc.) and tailrace. These datasets are documented in this report as are various 3-D graphical representations of The Dalles spillway and tailrace. The performance of the CFD model was then validated for several cases as the third step. The validated model

  3. Free-Surface Computational Fluid Dynamics Modeling of a Spillway and Tailrace: Case Study of The Dalles Project

    SciTech Connect

    Cook, Chris B.; Richmond, Marshall C.; Serkowski, John A.; Ebner, Laurie L.

    2002-07-30

    Based upon acoustic tracking and fish tagging data, The Dalles Project constructed and operated by the U. S. Army Corps of Engineers has been shown to have the highest mortality rates for juvenile salmonids on the Lower Columbia River. In efforts to assist the hydraulic and biological communities in managing this hydroelectric project, a three-dimensional computational fluid dynamics (CFD) model was applied to the spillway, stilling basin, and tailrace zones downstream of the dam. To simulate the highly transient and turbulent flow conditions in this region, a free-surface computational fluid dynamics (CFD) numerical model has been applied. This model is based upon the volume-of-fluids (VOF) method, and is capable of simulating sudden discontinuities in the free surface, including wave breakup. The model solves the non-hydrostatic Reynolds-averaged Navier-Stokes (RANS) equations over variable-sized hexahedral cells. To verify the ability of the numerical model to simulate flows downstream of the spillway, the model was verified against data from three different physical models of The Dalles tailrace at scales of 1:36, 1:40, and 1:80. Results from these physical models allow for validation of the numerical model at various scales of motion from the small scale highly dynamic variations near the baffle blocks (1:36 and 1:40 scale) to the larger scale general circulation patterns that encompass the tailrace (1:80 scale).

  4. Experimental study on improvement effect of guide wall to water flow in bend of spillway chute.

    PubMed

    Zhang, Qinghua; Diao, Yanfang; Zhai, Xingtao; Li, Shuning

    2016-01-01

    In order to improve water flow in a bend of a spillway chute using a guide wall, modeling experiments with or without a guide wall under conditions of three different bend axial radii, three chute bottom slopes and three flow rates were carried out in this study. Two indexes were calculated, which are the improved water surface uniformity and the reduced rate of water surface difference in concave and convex banks of the cross-section. The results show that: (1) setting a guide wall in a bend can improve water flow in the bend because it increased the water surface uniformity of the cross-section and reduced the water surface difference in the concave and convex banks; (2) the smaller the bend axial radius, the better the water surface improvement effect will be using a guide wall; (3) the steeper the bottom slope, the more cross-sections with less water surface difference; and (4) flow rates have a great influence on water surface improvement in the bend, and the guide wall can improve water flow obviously when the water depth in the starting section of the bend is lower than the height of the guide wall. This study has important implications in engineering design of guide walls.

  5. Little Goose Lock and Dam Removable Spillway Weir

    DTIC Science & Technology

    2007-08-01

    future pressure vessels. C-4. Consider use of alternate materials for spillway bay concrete repair (versus shotcrete ). C-5. See VE-5 recommendation. To...method on spillway (no shotcrete ) 25 NG-15 Eliminate forebay survey 0 0 C-3 0 LITTLE GOOSE LOCK AND DAM REMOVABLE SPILLWAY WEIR VALUE ENGINEERING STUDY

  6. Low Water Crossing 118, masonry lower spillway wall and spillway ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Low Water Crossing 118, masonry lower spillway wall and spillway surface, view to west-northwest - Route No. 1-Overton-Lake Mead Road, Low Water Crossings, 6 miles south of Overton, Overton, Clark County, NV

  7. Low Water Crossing 118, masonry upper spillway wall and spillway ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Low Water Crossing 118, masonry upper spillway wall and spillway surface, view to northwest - Route No. 1-Overton-Lake Mead Road, Low Water Crossings, 6 miles south of Overton, Overton, Clark County, NV

  8. 42. View of emergency spillway excavation looking downstream from spillway. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    42. View of emergency spillway excavation looking downstream from spillway. Photographer unknown, 1929. Source: ADWR. - Waddell Dam, On Agua Fria River, 35 miles northwest of Phoenix, Phoenix, Maricopa County, AZ

  9. Design of converging stepped spillways

    USDA-ARS?s Scientific Manuscript database

    Roller compacted concrete (RCC) stepped spillways are growing in popularity for providing overtopping protection for aging watershed dams with inadequate auxiliary spillway capacity and for the construction of new dams. Unobtainable land rights, topographic features, and land use changes caused by ...

  10. Physical modeling of stepped spillways

    USDA-ARS?s Scientific Manuscript database

    Stepped spillways applied to embankment dams are becoming popular for addressing the rehabilitation of aging watershed dams, especially those situated in the urban landscape. Stepped spillways are typically placed over the existing embankment, which provides for minimal disturbance to the original ...

  11. 15. AERIAL PHOTOGRAPH OF DAM SITE SHOWING SPILLWAY OGEE SECTION ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    15. AERIAL PHOTOGRAPH OF DAM SITE SHOWING SPILLWAY OGEE SECTION AND SPILLWAY APRON EXCAVATION IN FOREGROUND.... Volume XVIII, No. 10, January 18, 1940. - Prado Dam, Spillway, Santa Ana River near junction of State Highways 71 & 91, Corona, Riverside County, CA

  12. 6. DETAIL OF UPSTREAM (WEST) SIDE OF SPILLWAY SHOWING WALKWAY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. DETAIL OF UPSTREAM (WEST) SIDE OF SPILLWAY SHOWING WALKWAY AND CONCRETE SPILLWAY PIERS. VIEW TO NORTH. - Cooke Hydroelectric Plant, Spillway, Cook Dam Road at Au Sable River, Oscoda, Iosco County, MI

  13. Hydraulic Design of Stepped Spillways Workshop

    USDA-ARS?s Scientific Manuscript database

    Stepped chutes and spillways are commonly used for routing discharges during flood events. In addition, stepped chutes are used for overtopping protection of earthen embankments. Stepped spillways provide significant energy dissipation due to its stepped feature; as a result, the stilling basin as...

  14. Inception point for embankment dam stepped spillways

    USDA-ARS?s Scientific Manuscript database

    Stepped spillways applied to embankment dams have become a common design practice with the rehabilitation of aging watershed dams, especially those experiencing a hazard classification change from low to high hazard. Previous research on stepped spillways focused on gravity dams where aerated flow ...

  15. Converging stepped spillways: Simplified momentum analysis approach

    USDA-ARS?s Scientific Manuscript database

    Roller compacted concrete (RCC) stepped spillways are growing in popularity for providing overtopping protection for aging watershed dams with inadequate auxiliary spillway capacity and for the construction of new dams. Site conditions, such as limited right-of-way, topography, and geological forma...

  16. Assessing the integrity of spillway foundations

    NASA Astrophysics Data System (ADS)

    Hsu, Keng-Tsang; Chiang, Chih-Hung; Cheng, Chia-Chi

    2017-02-01

    The erosion under a spillway can be a long-term issue that threatens the structural integrity of a water reservoir. The spillways under investigation were suspected to be defective after they had been commissioned in 1987 and 1939, respectively. Potholes and subsurface cavities were confirmed in the safety assessment using various NDT techniques including ground penetrating radar and impact echo. The GPR inspection was able to differentiate the intact region from the cavities under concrete slabs. The impact echo results and associated analyses provided further evidence of inferior condition in the soil under the concrete slabs. The engineering team designed and executed the repair projects based on the conclusion of the integrity assessment. Repetitive GPR scans were also carried out after the rehabilitation of spillways. Not only the quality of repair can be evaluated, the scans also provided a baseline record for long-term condition assessment of the spillway and the reservoir in the future.

  17. Completion of Embankment, Spillway and Outlet Works

    DTIC Science & Technology

    1990-08-01

    principal features of the project include (1) a rolled earthfill embankment approximately 14,980 feet long; (2) a limited service spillway consisting...approach channel, intake structure and service bridge, a 708-foot long by 13-foot diameter cut and cover conduit, stilling basin and excavated discharge...FOUNDATION. a. General. The limited service spillway is founded in weathered clay shale of the Pawpaw Formation of Lower Cretaceous age. The outlet works

  18. Prediction of cavitation damage on spillway using K-nearest neighbor modeling.

    PubMed

    Fadaei Kermani, E; Barani, G A; Ghaeini-Hessaroeyeh, M

    2015-01-01

    Cavitation is a common and destructive process on spillways that threatens the stability of the structure and causes damage. In this study, based on the nearest neighbor model, a method has been presented to predict cavitation damage on spillways. The model was tested using data from the Shahid Abbaspour dam spillway in Iran. The level of spillway cavitation damage was predicted for eight different flow rates, using the nearest neighbor model. Moreover, based on the cavitation index, five damage levels from no damage to major damage have been determined. Results showed that the present model predicted damage locations and levels close to observed damage during past floods. Finally, the efficiency and precision of the model was quantified by statistical coefficients. Appropriate values of the correlation coefficient, root mean square error, mean absolute error and coefficient of residual mass show the present model is suitable and efficient.

  19. Multi-objective reservoir operation during flood season considering spillway optimization

    NASA Astrophysics Data System (ADS)

    Liu, Xinyuan; Chen, Lu; Zhu, Yonghui; Singh, Vijay P.; Qu, Geng; Guo, Xiaohu

    2017-09-01

    Flood control and hydropower generation are two main functions of Three Gorges Reservoir (TGR) in China. In this study, a multi-objective operation model for TGR considering these two functions was developed. Since the optimal results of reservoir operation are mostly in the form of gross outflow which is hardly used to directly guide reservoir operation, the optimization of spillways operation was taken into account. For observed historical flood hydrographs and design flood hydrographs, the progressive optimality algorithm (POA) was employed to determine the optimal operation of spillways. For the real-time reservoir operation, a smooth support vector machine (SSVM) model was applied to abstract the optimal operation rules which consider the order and the number of spillways put into use. Results demonstrate that the use of different spillways has a significant impact on reservoir operation. Therefore, it is necessary to consider the order and number of spillways that should be used. Instead of optimizing outflow, direct optimization of the order and number of spillways can yield most reasonable results. The SSVM model simulates the relationship among inflow, water level and outflow satisfactorily and can be used for real-time or short term reservoir operation. Application of the SSVM model can also reduce flood risk and increase hydropower generation during the flood season.

  20. 31. SPILLWAY CHANNEL WALLS REINF DETAILS; MONOLITHS E21 AND ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    31. SPILLWAY CHANNEL WALLS REINF - DETAILS; MONOLITHS E-21 AND W-21. Sheet S-45, May, 1940. File no. 342/58. - Prado Dam, Spillway, Santa Ana River near junction of State Highways 71 & 91, Corona, Riverside County, CA

  1. 12. CLOSEUP VIEW OF CROSS SECTION OF SPILLWAY FIFTY FEET ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    12. CLOSE-UP VIEW OF CROSS SECTION OF SPILLWAY FIFTY FEET FROM LAKESHORE, SHOWING REMAINS OF SPILLWAY TIMBERS, LOOKING WEST - Three Bears Lake & Dams, North of Marias Pass, East Glacier Park, Glacier County, MT

  2. 26. SPILLWAY DISCHARGE DATA. CURVE NO. 3 AND NO. 4. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    26. SPILLWAY DISCHARGE DATA. CURVE NO. 3 AND NO. 4. April 1928 Reference No. 108.2 - Cushman No. 1 Hydroelectric Power Plant, Spillway, North Fork of Skokomish River, 5 miles West of Hood Canal, Hoodsport, Mason County, WA

  3. 25. SPILLWAY DISCHARGE DATA. CURVE NO. 1 AND NO. 2. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    25. SPILLWAY DISCHARGE DATA. CURVE NO. 1 AND NO. 2. April 1928 Reference No. BT-108.1 - Cushman No. 1 Hydroelectric Power Plant, Spillway, North Fork of Skokomish River, 5 miles West of Hood Canal, Hoodsport, Mason County, WA

  4. 23. VIEW OF HORSE MESA DAM, SHOWING SPILLWAY DISCHARGE TUNNEL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    23. VIEW OF HORSE MESA DAM, SHOWING SPILLWAY DISCHARGE TUNNEL AT LEFT, RIGHT (OR NORTH) SPILLWAY, HEFU POWER UNIT, AND ORIGINAL POWER PLANT - Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricopa County, AZ

  5. 35. VIEW SHOWING SPILLWAY DISCHARGE TUNNEL, DATE INSCRIBED IS 1937. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    35. VIEW SHOWING SPILLWAY DISCHARGE TUNNEL, DATE INSCRIBED IS 1937. RIGHT (OR NORTH) SPILLWAY IS PARTIALLY VISIBLE AT UPPER RIGHT - Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricopa County, AZ

  6. 1. UPPER SEGMENT OF SPILLWAY CHANNEL, DRUM GATES ALONG SIDE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. UPPER SEGMENT OF SPILLWAY CHANNEL, DRUM GATES ALONG SIDE OF CHANNEL, LOOKING SOUTH (up the channel) - Tieton Dam, Spillway & Drum Gates, South & East side of State Highway 12, Naches, Yakima County, WA

  7. 4. SPILLWAY DRUM GATES AND CHANNEL, LOOKING NORTHEAST (upstream face ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    4. SPILLWAY DRUM GATES AND CHANNEL, LOOKING NORTHEAST (upstream face and Control House in background) - Tieton Dam, Spillway & Drum Gates, South & East side of State Highway 12, Naches, Yakima County, WA

  8. 5. UPSTREAM (WEST) VIEW OF SPILLWAY, WITH COOKE DAM POND ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. UPSTREAM (WEST) VIEW OF SPILLWAY, WITH COOKE DAM POND IN FOREGROUND AND NORTH EMBANKMENT (MI-98-A) AT LEFT. VIEW TO NORTHEAST. - Cooke Hydroelectric Plant, Spillway, Cook Dam Road at Au Sable River, Oscoda, Iosco County, MI

  9. 23. SPILLWAY NO. 1 LOWER END TOPOGRAPHY AND SECTIONS. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    23. SPILLWAY NO. 1 - LOWER END TOPOGRAPHY AND SECTIONS. February 1934. Reference BS-150. - Cushman No. 1 Hydroelectric Power Plant, Spillway, North Fork of Skokomish River, 5 miles West of Hood Canal, Hoodsport, Mason County, WA

  10. New flow depth relationships for embankment dam stepped spillway design

    USDA-ARS?s Scientific Manuscript database

    A common deficiency for embankment dams changing from a low hazard to a high hazard dam is inadequate spillway capacity. Roller compacted concrete (RCC) stepped spillways are a popular method to address this issue. Stepped spillway research has gained momentum in recent years due to the need for d...

  11. Spillway and foundation erosion: Predicting erosion threshold

    SciTech Connect

    Annandale, G.W.; Wittler, R.J.; Mefford, B.W.

    1995-12-31

    This paper summarizes the method that will be used by the Bureau of Reclamation to investigate scour of spillways and dam foundations, and to develop a numerical model to compute the same. In what follows the basis of a unique relationship between the erosive power of water and the ability of earth materials to resist erosion, known as the Erodibility Index Method, is presented. The paper also provides a description of the approach that will be used by the numerical model to calculate the erosive power of plunging, aerated jets. The complimentary paper, Wittler (1995), describes the approach that will be used to investigate the extent of scour of spillways and dam foundations.

  12. Geotechnical Aspects of Rock Erosion in Emergency Spillway Channels. Report 5 Summary of Results, Conclusions and Recommendations

    DTIC Science & Technology

    1990-09-01

    International Geological Congress, Washington, DC. Moore, W. L. 1943. " Energy Loss at the Base of a Free Overfall ," Transac- tions of the American...the development of a scouring backroller. These relationships show that the potential for scour due to a backroller at the base of an overfall ...dam lost impoundment by spillway failure. An observational data base wasldevtlopeA to documen cases of spillway erosion using data from qsjte vs

  13. Physical Hydraulic Model of Side-Channel Spillway of Lambuk DAM, Bali

    NASA Astrophysics Data System (ADS)

    Harifa, A. C.; Sholichin, M.; Othman, F. B.

    2013-12-01

    The spillway is among the most important structures of a dam project. A spillway is designed to prevent overtopping of a dam at a place that is not designed for overtopping. Side-channel spillways are commonly used to release water flow from a reservoir in places where the sides are steep and have a considerable height above the dam. Experimental results were collected with a hydraulic model of the side-channel spillway for releasing the peak overflow of Lambuk Dam. This dam is, located on the Lambuk River, which is a tributary of the Yeh Hoo River ~ 34.6 km north of Denpasar on the island of Bali. The bituminous geomembrane faced dam is 24 m in height, with a 35-m wide spillway. The length of the side channel is 35 m long, with 58 m of transition channel, 67.37 m of chuteway channel and 22.71 m of stilling basin. The capacity of the spillway is 231.91 m3/s and the outlet works capacity is 165.28 m3/s. The reservoir is designed for irrigation and water supply. The purpose of this study was to optimize the designed of the structure and to ensure its safe operation. In hydraulic model may help the decision-makers to visualize the flow field before selecting a ';suitable' design. The hydraulic model study was performed to ensure passage of the maximum discharge at maximum reservoir capacity; to study the spillway approach conditions, water surface profiles, and flow patterns in the chuteway; and to reveal potential demerits of the proposed hydraulic design of various structures and explore solutions. The model was constructed at 1 : 40 scale, Reservoir topography was modeled using concrete, the river bed using sand and some gravel, the river berm using concrete, and the spillway and channel using Plexiglas. Water was measured using Rectangular contracted weir. Design floods (with return period in year) were Q2 = 111.40 m3/s, Q5 = 136.84 m3/s, Q10 = 159.32 m3/s, Q25 = 174.61 m3/s, Q50 = 185.13 m3/s, Q100 = 198.08 m3/s, Q200 = 210.55 m3/s, Q1000 = 231.91 m3/s and the

  14. Bonneville Project: CFD of the Spillway Tailrace

    SciTech Connect

    Rakowski, Cynthia L.; Serkowski, John A.; Richmond, Marshall C.; Romero Gomez, Pedro DJ

    2012-11-19

    US Army Corps of Engineers, Portland District (CENWP) operates the Bonneville Lock and Dam Project on the Columbia River. High spill flows that occurred during 2011 moved a large volume of rock from downstream of the spillway apron to the stilling basin and apron. Although 400 cubic yards of rocks were removed from the stilling basin, there are still large volumes of rock downstream of the apron that could, under certain flow conditions, move upstream into the stilling basin. CENWP is investigating operational changes that could be implemented to minimize future movement of rock into the stilling basin. A key analysis tool to develop these operational changes is a computational fluid dynamics (CFD) model of the spillway. A free-surface CFD model of the Bonneville spillway tailrace was developed and applied for four flow scenarios. These scenarios looked at the impact of flow volume and flow distribution on tailrace hydraulics. The simulation results showed that areas of upstream flow existed near the river bed downstream of the apron, on the apron, and within the stilling basin for all flows. For spill flows of 300 kcfs, the cross-stream and downstream extent of the recirculation zones along Cascade and Bradford Island was very dependent on the spill pattern. The center-loaded pattern had much larger recirculation zones than the flat or bi-modal pattern. The lower flow (200 kcfs) with a flat pattern had a very large recirculation zone that extended half way across the channel near the river bed. A single flow scenario (300 kcfs of flow in a relatively flat spill pattern) was further interrogated using Lagrangian particle tracking. The tracked particles (with size and mass) showed the upstream movement of sediments onto the concrete apron and against the vertical wall between the apron and the stilling basin from seed locations downstream of the apron and on the apron.

  15. 26. SPILLWAY CHANNEL WALLS REINF. DETAILS; MONOLITHS W1 TO ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    26. SPILLWAY CHANNEL WALLS - REINF. DETAILS; MONOLITHS W-1 TO W-4 INCL. Sheet S-26, July, 1939. File no. SA 342/34. - Prado Dam, Spillway, Santa Ana River near junction of State Highways 71 & 91, Corona, Riverside County, CA

  16. 1. OVERALL VIEW OF SPILLWAY SHOWING BAFFLE WALL AND TAIL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. OVERALL VIEW OF SPILLWAY SHOWING BAFFLE WALL AND TAIL WATERS, WITH POWERHOUSE (MI-98-C) AND SUBSTATION (MI-98-D) AT LEFT. VIEW TO SOUTH. - Cooke Hydroelectric Plant, Spillway, Cook Dam Road at Au Sable River, Oscoda, Iosco County, MI

  17. 17. VIEW EASTERLY ALONG DOWNSTREAM END OF THE SPILLWAY, SHOWING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    17. VIEW EASTERLY ALONG DOWNSTREAM END OF THE SPILLWAY, SHOWING CELL WALL CONSTRUCTION IN THE CRIB CUTOFF.... Volume XX, No. 4, August 3, 1940. - Prado Dam, Spillway, Santa Ana River near junction of State Highways 71 & 91, Corona, Riverside County, CA

  18. 14. VIEW OF DISCHARGE OVER SPILLWAY CREST FROM WEST RETAINING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    14. VIEW OF DISCHARGE OVER SPILLWAY CREST FROM WEST RETAINING WALL, FACING EAST. WATER ELEVATION MEASURED 4.8 FEET ABOVE CREST. December 1933 - Cushman No. 1 Hydroelectric Power Plant, Spillway, North Fork of Skokomish River, 5 miles West of Hood Canal, Hoodsport, Mason County, WA

  19. 15. VIEW OF DISCHARGE THROUGH SPILLWAY CHUTE FROM WEST RETAINING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    15. VIEW OF DISCHARGE THROUGH SPILLWAY CHUTE FROM WEST RETAINING WALL, FACING SOUTH. STANDING WAVES ARE VISIBLE. WATER ELEVATION MEASURED 4.8 FEET ABOVE CREST. December 1933 - Cushman No. 1 Hydroelectric Power Plant, Spillway, North Fork of Skokomish River, 5 miles West of Hood Canal, Hoodsport, Mason County, WA

  20. 24. CUSHMAN #1 CONCRETE SPILLWAY RAMPS PLAN AND DETAILS. January ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    24. CUSHMAN #1 CONCRETE SPILLWAY RAMPS PLAN AND DETAILS. January 1981. Revised in June 1981. Reference No. BA-081 - Cushman No. 1 Hydroelectric Power Plant, Spillway, North Fork of Skokomish River, 5 miles West of Hood Canal, Hoodsport, Mason County, WA

  1. 24. SPILLWAY CHANNEL WALLS REINFORCEMENT DETAILS; MONOLITHS E1 TO ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    24. SPILLWAY CHANNEL WALLS - REINFORCEMENT DETAILS; MONOLITHS E-1 TO F-4 INCL. & NO. 34. Sheet S-11, June, 1939. File no. SA 342/24(?). - Prado Dam, Spillway, Santa Ana River near junction of State Highways 71 & 91, Corona, Riverside County, CA

  2. Hydroacoustic Evaluation of Juvenile Salmonid Passage at The Dalles Dam Spillway, 2006

    SciTech Connect

    Johnson, Gary E.; Khan, Fenton; Skalski, John R.; Rakowski, Cynthia L.; Richmond, Marshall C.; Serkowski, John A.

    2007-05-24

    The objective of this study was to determine detailed vertical, horizontal, intensive, and diel distributions of juvenile salmonid passage at the spillway at The Dalles Dam from April 12 to July16, 2006. These data are being applied in the Spillway Improvements Program to position release pipes for direct injury and mortality studies and to provide baseline data for assessment of the vortex suppression devices scheduled for deployment in 2007. We estimated fish distributions from hydroacoustic data collected with split-beam transducers arrayed across Bays 1 through 9 and 14. Spill at ~20 kcfs per bay was bulked at Bays 1-6, although the other bays were opened at times during the study to maintain a 40% spill percentage out of total project discharge. The vertical distribution of fish was skewed toward the surface during spring, but during summer, passage peaked at 2-3 m above the spillway ogee. Fish passage rates (number per hour) and fish densities (number per kcfs) were highest at Bay 6, followed by passage at Bay 5. This result comports with spillway horizontal distribution data from radio telemetry and hydroacoustic studies in 2004. The vertical and horizontal distribution of fish passage at bays 5 and 6 was much more variable during spring than summer and more variable at bay 5 than bay 6. Diel distribution data revealed that fish passage was highest during 0600-0700 h in spring; otherwise passage was reasonably uniform on a diel basis. This study substantiates the purpose of the spillway vortex suppression device to re-distribute downstream migrants away from Bay 6 toward Bays 1-5.

  3. Optimizing Spillway Capacity With an Estimated Distribution of Floods

    NASA Astrophysics Data System (ADS)

    Resendiz-Carrillo, Daniel; Lave, Lester B.

    1987-11-01

    A model of social cost minimizing spillway capacity for dams is constructed using (1) the estimated distribution of peak flows from historical data, (2) the estimated relationship between spillway capacity and cost, and (3) a characterization of downstream flood damage from dam failure. Net social cost is the sum of construction costs and expected flood damage. This model is applied to data for the Rio Grande River at Embudo, New Mexico. Minimum social cost is attained at a spillway capacity much smaller than that needed to handle a probably maximum flood.

  4. 3. View north of spillway and abutment on Lake Whitney ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. View north of spillway and abutment on Lake Whitney Dam. - Lake Whitney Water Filtration Plant, Lake Whitney Dam, East side of Whitney Avenue near intersection with Armory Street, Hamden, New Haven County, CT

  5. 2. View west of spillway and abutment on Lake Whitney ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. View west of spillway and abutment on Lake Whitney Dam. - Lake Whitney Water Filtration Plant, Lake Whitney Dam, East side of Whitney Avenue near intersection with Armory Street, Hamden, New Haven County, CT

  6. 79. VIEW OF SPILLWAY THAT AUTOMATICALLY REGULATES HEIGHT OF WATER ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    79. VIEW OF SPILLWAY THAT AUTOMATICALLY REGULATES HEIGHT OF WATER IN RESERVOIR, 'BACKWATER OVERFLOW,' Print No. 233, April 1904 - Electron Hydroelectric Project, Along Puyallup River, Electron, Pierce County, WA

  7. 28. Mormon Flat spillway gates and superstructure. Photographer Mark Durben, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    28. Mormon Flat spillway gates and superstructure. Photographer Mark Durben, 1988. Source: Salt River Project. - Mormon Flat Dam, On Salt River, Eastern Maricopa County, east of Phoenix, Phoenix, Maricopa County, AZ

  8. 6. VIEW OF SPILLWAY TIMBERS AND WATER CONTROL BOX, SHOWING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. VIEW OF SPILLWAY TIMBERS AND WATER CONTROL BOX, SHOWING WATER CONTROL BOX WITH LOWERED LAKE LEVEL - Three Bears Lake & Dams, Water Control Box, North of Marias Pass, East Glacier Park, Glacier County, MT

  9. VIEW OF DOWNSTREAM SIDE OF TUMALO DIVERSION DAM AND SPILLWAY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF DOWNSTREAM SIDE OF TUMALO DIVERSION DAM AND SPILLWAY, WITH FISH LADDER TO RIGHT OF VIEW. FROM WEST BANK OF TUMALO CREEK. LOOKING SOUTHWEST - Tumalo Irrigation District, Tumalo Project, West of Deschutes River, Tumalo, Deschutes County, OR

  10. 91. photographer unknown undated TOP OF SPILLWAY DAM PIERS WITH ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    91. photographer unknown undated TOP OF SPILLWAY DAM PIERS WITH ASSEMBLY OF DAM GATES UNDERWAY. WASHINGTON SHORE WING WALL IN BACKGROUND. - Bonneville Project, Bonneville Dam, Columbia River, Bonneville, Multnomah County, OR

  11. 10. VIEW WEST TOWARD DOWNSTREAM SIDE OF SPILLWAY FROM UNDERSIDE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. VIEW WEST TOWARD DOWNSTREAM SIDE OF SPILLWAY FROM UNDERSIDE OF GARDEN STATE PARKWAY ABUTMENT - Upper Doughty Dam, 200 feet west of Garden State Parkway, 1.7 miles west of Absecon, Egg Harbor City, Atlantic County, NJ

  12. 9. VIEW WEST TOWARD DOWNSTREAM SIDE OF SPILLWAY FROM NORTH ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. VIEW WEST TOWARD DOWNSTREAM SIDE OF SPILLWAY FROM NORTH SIDE OF DOWNSTREAM BANK OF DAM - Upper Doughty Dam, 200 feet west of Garden State Parkway, 1.7 miles west of Absecon, Egg Harbor City, Atlantic County, NJ

  13. AERIAL PHOTO OF ELWHA RIVER, SPILLWAYS AT GLINES DAM, POWERHOUSE, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    AERIAL PHOTO OF ELWHA RIVER, SPILLWAYS AT GLINES DAM, POWERHOUSE, SURGE TANK AND TRANSFORMER YARD WITH HISTORIC SHED (WAREHOUSE). PHOTO BY JET LOWE, HAER, 1995. - Elwha River Hydroelectric System, Glines Hydroelectric Dam & Plant, Port Angeles, Clallam County, WA

  14. GENERAL VIEW TO SOUTH OF WESTBANK SPILLWAY, PENSTOCK, SURGE TANK, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    GENERAL VIEW TO SOUTH OF WEST-BANK SPILLWAY, PENSTOCK, SURGE TANK, AND ELWHA POWERHOUSE. PHOTO BY JET LOWE, HAER, 1995. - Elwha River Hydroelectric System, Elwha Hydroelectric Dam & Plant, Port Angeles, Clallam County, WA

  15. 20. CROSS SECTIONAL VIEW OF HORSE MESA, SHOWING RIGHT SPILLWAY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    20. CROSS SECTIONAL VIEW OF HORSE MESA, SHOWING RIGHT SPILLWAY SUPERSTRUCTURE AND CONCRETE PLACEMENT LINES August 2, 1927 - Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricopa County, AZ

  16. 59. AERIAL VIEW OF OWYHEE DAM SHOWING RINGGATE SPILLWAY. VIEW ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    59. AERIAL VIEW OF OWYHEE DAM SHOWING RING-GATE SPILLWAY. VIEW TO NORTHEAST. Aerial photo by Glade Walker, U.S. Bureau of Reclamation, Pacific Northwest Region, September 29, 1989. - Owyhee Dam, Across Owyhee River, Nyssa, Malheur County, OR

  17. 53. photographer unknown October 1935 WORK ON SOUTH HALF SPILLWAY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    53. photographer unknown October 1935 WORK ON SOUTH HALF SPILLWAY SHOWING REINFORCING STEEL AND PLACING CONCRETE. COFFERDAM IN BACKGROUND. - Bonneville Project, Bonneville Dam, Columbia River, Bonneville, Multnomah County, OR

  18. 10. DETAIL VIEW OF SPILLWAY AT DAM 83, SHOWING RIVER ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. DETAIL VIEW OF SPILLWAY AT DAM 83, SHOWING RIVER COBBLE PAVING (FOREGROUND) AND WINGWALL, LOOKING EAST - Upper Souris National Wildlife Refuge, Dam 83, Souris River Basin, Foxholm, Surrey (England), ND

  19. 10. DETAIL VIEW OF RIVERCOBBLE WEIR WALL OF THE SPILLWAY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. DETAIL VIEW OF RIVER-COBBLE WEIR WALL OF THE SPILLWAY NEAR THE EAST END, DAM 87, LOOKING NORTHWEST - Upper Souris National Wildlife Refuge, Dam 87, Souris River Basin, Foxholm, Surrey (England), ND

  20. 11. VIEW OF SPILLWAY AT DAM 83, SHOWING REFUGE HEADQUARTERS ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    11. VIEW OF SPILLWAY AT DAM 83, SHOWING REFUGE HEADQUARTERS ON THE HORIZON (LEFT, CENTER), LOOKING EAST - Upper Souris National Wildlife Refuge, Dam 83, Souris River Basin, Foxholm, Surrey (England), ND

  1. 9. VIEW OF SPILLWAY AT DAM 83, SHOWING LOCATION OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. VIEW OF SPILLWAY AT DAM 83, SHOWING LOCATION OF FORMER CONCRETE FLASHBOARD STRUCTURE ON RIGHT, LOOKING WEST - Upper Souris National Wildlife Refuge, Dam 83, Souris River Basin, Foxholm, Surrey (England), ND

  2. 41. Upstream end of emergency spillway excavation. Photographer unknown, 1929. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    41. Upstream end of emergency spillway excavation. Photographer unknown, 1929. Source: Arizona Department of Water Resources (ADWR). - Waddell Dam, On Agua Fria River, 35 miles northwest of Phoenix, Phoenix, Maricopa County, AZ

  3. 18. View southeast, west end of spillway, shows cribbing and ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    18. View southeast, west end of spillway, shows cribbing and metal ice shield - Sewall's Falls Hydroelectric Facility, East end of Second Street spanning Merrimack River, Concord, Merrimack County, NH

  4. 5. DETAIL VIEW OF TOE SPILLWAY SECTION OF LOWWATER DAM, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. DETAIL VIEW OF TOE SPILLWAY SECTION OF LOW-WATER DAM, LOOKING NORTHWEST (UPSTREAM). ST. LOUIS WATER DEPARTMENT INTAKE IN BACKGROUND - Upper Mississippi River 9-Foot Channel Project, Lock & Dam 27, Granite City, Madison County, IL

  5. 60. Waddell Dam in relation and spillway tailrace. Photographer Mark ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    60. Waddell Dam in relation and spillway tailrace. Photographer Mark Durben, 1986. Source: Salt River Project. - Waddell Dam, On Agua Fria River, 35 miles northwest of Phoenix, Phoenix, Maricopa County, AZ

  6. 70. Downstream view of Waddell Dam spillway and taintor gates. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    70. Downstream view of Waddell Dam spillway and taintor gates. Photographer Mark Durben. Source: Salt River Project. - Waddell Dam, On Agua Fria River, 35 miles northwest of Phoenix, Phoenix, Maricopa County, AZ

  7. 40. Reservoir behind Pleasant Dam, looking downstream, spillway is at ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    40. Reservoir behind Pleasant Dam, looking downstream, spillway is at right. Photographer unknown, c. late 1920s. Source: MWD. - Waddell Dam, On Agua Fria River, 35 miles northwest of Phoenix, Phoenix, Maricopa County, AZ

  8. 39. Pleasant Dam from east abutment with spillway visible at ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    39. Pleasant Dam from east abutment with spillway visible at center. Photographer unknown, 1927. Source: MWD. - Waddell Dam, On Agua Fria River, 35 miles northwest of Phoenix, Phoenix, Maricopa County, AZ

  9. 1. OVERALL VIEW OF UPSTREAM FACE OF DAM; SPILLWAY IN ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. OVERALL VIEW OF UPSTREAM FACE OF DAM; SPILLWAY IN FOREGROUND, LOCK IN BACKGROUND ON NORTH RIVER BANK. VIEW TO NORTH. - Starved Rock Locks & Dam, Illinois Waterway River mile 231, Peru, La Salle County, IL

  10. 6. GENERAL VIEW OF WESTERLY ELEVATION OF SPILLWAY; VIEW TO ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. GENERAL VIEW OF WESTERLY ELEVATION OF SPILLWAY; VIEW TO NORTHEAST FROM BLACKSTONE RIVER FLOODPLAIN. - Blackstone Canal Millbury Segment, Beginning northwest of State Route 146 & McCracken Road, running along west side of Route 146, Millbury, Worcester County, MA

  11. OVERVIEW OF SPILLWAY FROM SOUTH BANK OF RIVER; FADING NORTHNORTHEAST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    OVERVIEW OF SPILLWAY FROM SOUTH BANK OF RIVER; FADING NORTH-NORTHEAST - Shoshone Falls Hydroelectric Project, Reservoir and Dam Complex, North Bank of Snake River, extreme Eastern end of the Shoshone Falls Hydroelectric Project, Tipperary Corner, Jerome County, ID

  12. OVERVIEW OF FALLS AND DAM COMPLEX, SPILLWAY AT RIGHT; FACING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    OVERVIEW OF FALLS AND DAM COMPLEX, SPILLWAY AT RIGHT; FACING EAST-NORTHEAST - Shoshone Falls Hydroelectric Project, Reservoir and Dam Complex, North Bank of Snake River, extreme Eastern end of the Shoshone Falls Hydroelectric Project, Tipperary Corner, Jerome County, ID

  13. DETAIL OF SPILLWAY GATES; FACING NORTHEAST Shoshone Falls Hydroelectric ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    DETAIL OF SPILLWAY GATES; FACING NORTHEAST - Shoshone Falls Hydroelectric Project, Reservoir and Dam Complex, North Bank of Snake River, extreme Eastern end of the Shoshone Falls Hydroelectric Project, Tipperary Corner, Jerome County, ID

  14. VERTICAL VIEW OF SPILLWAY LOOKING TOWARDS INTAKE; FACING WESTNORTHWEST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VERTICAL VIEW OF SPILLWAY LOOKING TOWARDS INTAKE; FACING WEST-NORTHWEST - Shoshone Falls Hydroelectric Project, Reservoir and Dam Complex, North Bank of Snake River, extreme Eastern end of the Shoshone Falls Hydroelectric Project, Tipperary Corner, Jerome County, ID

  15. OVERVIEW OF DAM COMPLEX FROM SPILLWAY TO INTAKE; FACING WESTNORTHWEST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    OVERVIEW OF DAM COMPLEX FROM SPILLWAY TO INTAKE; FACING WEST-NORTHWEST - Shoshone Falls Hydroelectric Project, Reservoir and Dam Complex, North Bank of Snake River, extreme Eastern end of the Shoshone Falls Hydroelectric Project, Tipperary Corner, Jerome County, ID

  16. VIEW OF SPILLWAY LOOKING AWAY FROM INTAKE; FACING SOUTHEAST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF SPILLWAY LOOKING AWAY FROM INTAKE; FACING SOUTHEAST - Shoshone Falls Hydroelectric Project, Reservoir and Dam Complex, North Bank of Snake River, extreme Eastern end of the Shoshone Falls Hydroelectric Project, Tipperary Corner, Jerome County, ID

  17. 3. General view of upstream face, looking northwest. Spillway is ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. General view of upstream face, looking northwest. Spillway is at the far end of the dam. The Antelope Valley is visible in center background. - Little Rock Creek Dam, Little Rock Creek, Littlerock, Los Angeles County, CA

  18. 19. STAIRWAY TO TAINTER GATE SECTION OF SPILLWAY, SHOWING STEAM ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    19. STAIRWAY TO TAINTER GATE SECTION OF SPILLWAY, SHOWING STEAM PIPES EMERGING FROM BOILERHOUSE (RIGHT) AND CONCRETE TAINTER GATE COUNTER WEIGHTS (BACKGROUND RIGHT). VIEW TO SOUTH. - Starved Rock Locks & Dam, Illinois Waterway River mile 231, Peru, La Salle County, IL

  19. Cataclysmic Flood Spillways: Comparison of Mars and Earth Examples

    NASA Astrophysics Data System (ADS)

    Komatsu, G.; Baker, V. R.

    1996-03-01

    A remarkable paleohydrological pattern is developed in the great system of Pleistocene spillways connecting the Black, Caspian, and Aral Sea basins. Expansion of the paleolakes occupying these basins in the Pleistocene might be attributed to progressive changes in water-balance parameters, including temperature, precipitation, runoff, and evaporation. This explanation is emphasized by Chepalyga (1984). However, evidence for cataclysmic flood erosion in the spillways indicates that very rapid, massive influxes of water played a major role in their origin.

  20. Effects of Suburban Development on Dam Safety: Who is Responsible for Spillway Upgrades?

    NASA Astrophysics Data System (ADS)

    Orlins, J. J.

    2002-05-01

    Land use patterns in many parts of the eastern United States have changed from rural to suburban or urban developments over the last few decades. The effects of urbanization on hydrologic processes are generally well understood: as development (and thus impervious surface area) increases, peak stream flows increase in magnitude and frequency. These changes in watershed hydrology can adversely affect stream morphology, water quality, and aquatic ecosystems. In addition to these factors, public safety may be endangered, with respect to hydraulic capacity of existing dams. In southern New Jersey, there are numerous small dams. Many of these were constructed in the early part of the 20th Century, to provide power for local mills. Today, the mills are long gone, but the dams remain. Current uses of the lakes created by these dams range from recreation to fire protection. When the dams were originally designed and built, they were adequate for the hydrologic conditions of the day. However, as development has changed the landscape in the watersheds upstream of these dams, existing spillways in many cases can no longer handle peak flows. These problems are compounded by revised estimates of Probable Maximum Precipitation, and thus Probable Maximum Flows. Current State regulations stipulate that all dams must be inspected on a regular basis, and must be able to pass current design flows. If existing spillways are undersized for the current hydrologic conditions, they must be upgraded, or the dams must be removed. Government and corporate dam owners can generally finance dam repairs and upgrades in a timely fashion. However, private dam owners often face financial challenges when faced with upgrading an existing dam to meet current hydrologic conditions In most cases, the dam owners have little or no control over land use in the watersheds. Thus, owners are faced with costly upgrades, which are required by conditions they can not control. This paper will explore the issue of

  1. Investigation of pressure variations over stepped spillways using smooth particle hydrodynamics

    NASA Astrophysics Data System (ADS)

    Husain, Sarhang M.; Muhammed, Jowhar R.; Karunarathna, Harshinie U.; Reeve, Dominic E.

    2014-04-01

    In this paper the smoothed particle hydrodynamics, (SPH), technique is used to investigate the pressure distribution on steps located in the non-aerated flow region of a stepped spillway for different discharges typical of skimming flow conditions. The open source code 2D SPHysics has been employed after being validated against the laboratory model studies of flow over broad crested weirs and flow over stepped spillways. The numerical results, in terms of the water surface and velocity profiles at different sections, are in good agreement with the corresponding experimental results. The code is then applied to determine the pressure distribution on the vertical and horizontal step faces. Also, the aspects of the pressure pattern are described and the positions/magnitudes of the maximum and minimum pressure values are presented.

  2. Numerical simulation of dissolved oxygen concentration in water flow over stepped spillways.

    PubMed

    Cheng, Xiangju; Chen, Xuewei

    2013-05-01

    This study developed an improved Eulerian model for the simulation of an air-water flow field over stepped spillways. The improved drag model applied different drag coefficients for bubbles and for free surface flows or gas cavities. Void fraction and turbulence correction were used in determining the bubble drag coefficient. The calculated air entrainment and air-water velocity could be adapted using these parameters. With the improved drag model, the Eulerian simulations predicted the location of the inception point, the distributions of air void fraction, velocity distributions, and pressure distributions. The change in the dissolved oxygen (DO) concentration from upstream of the stepped spillways, to downstream, was simulated based on the improved computational fluid dynamics model and the transport equation for DO transferring. The numerical DO concentration coincided with the experimental results. Therefore, the improved CFD model and the numerical methods presented here can provide possible optimization tools for strong air entrainment flows.

  3. 25. PLAN OF SPILLWAY SHOWING INDEX TO MONOLITHS. Sheet S18, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    25. PLAN OF SPILLWAY SHOWING INDEX TO MONOLITHS. Sheet S-18, July, 1939. File no. SA 342/15. - Prado Dam, Spillway, Santa Ana River near junction of State Highways 71 & 91, Corona, Riverside County, CA

  4. Numerical modeling of flow and sediment transport in Lake Pontchartrain due to flood release from Bonnet Carré Spillway

    USDA-ARS?s Scientific Manuscript database

    In this study, the flow fields and sediment transport in Lake Pontchartrain during a flood release from Bonnet Carré Spillway (BCS) was simulated using the computational model CCHE2D developed at the National Center for Computational Hydroscience and Engineering (NCCHE), the University of Mississipp...

  5. A step in the right direction: new flow depth relationships for stepped spillway design

    USDA-ARS?s Scientific Manuscript database

    A common deficiency for embankment dams changing from a low hazard to a high hazard dam is inadequate spillway capacity. Roller compacted concrete (RCC) stepped spillways are a popular method to address this issue. Stepped spillway research has gained momentum in recent years due to the need for d...

  6. Self-Aerated Flow on Corps of Engineers Spillways

    DTIC Science & Technology

    1994-05-01

    be important since most of the entrapped air will become entrained at the spillway/ pool plunge point. 5Chapter 1 Introduction 0 0 a a aFLO 0 0 0 a 0 0...available for gas transfer. If the flow on the spillway plunges into a downstream pool , then some proportion of the entrapped air would become entrained ...tremendous surface area available for transfer in a bubble flow. When the flow plunges into a pool below the spilhvay, then the total conveyed air will

  7. Gene-expression programming for flip-bucket spillway scour.

    PubMed

    Guven, Aytac; Azamathulla, H Md

    2012-01-01

    During the last two decades, researchers have noticed that the use of soft computing techniques as an alternative to conventional statistical methods based on controlled laboratory or field data, gave significantly better results. Gene-expression programming (GEP), which is an extension to genetic programming (GP), has nowadays attracted the attention of researchers in prediction of hydraulic data. This study presents GEP as an alternative tool in the prediction of scour downstream of a flip-bucket spillway. Actual field measurements were used to develop GEP models. The proposed GEP models are compared with the earlier conventional GP results of others (Azamathulla et al. 2008b; RMSE = 2.347, δ = 0.377, R = 0.842) and those of commonly used regression-based formulae. The predictions of GEP models were observed to be in strictly good agreement with measured ones, and quite a bit better than conventional GP and the regression-based formulae. The results are tabulated in terms of statistical error measures (GEP1; RMSE = 1.596, δ = 0.109, R = 0.917) and illustrated via scatter plots.

  8. Spillway sizing of large dams in Austria

    NASA Astrophysics Data System (ADS)

    Reszler, Ch.; Gutknecht, D.; Blöschl, G.

    2003-04-01

    This paper discusses the basic philosophy of defining and calculating design floods for large dams in Austria, both for the construction of new dams and for a re-assessment of the safety of existing dams. Currently the consensus is to choose flood peak values corresponding to a probability of exceedance of 2*10-4 for a given year. A two step procedure is proposed to estimate the design flood discharges - a rapid assessment and a detailed assessment. In the rapid assessment the design discharge is chosen as a constant multiple of flood values read from a map of regionalised floods. The safety factor or multiplier takes care of the uncertainties of the local estimation and the regionalisation procedure. If the current design level of a spillway exceeds the value so estimated, no further calculations are needed. Otherwise (and for new dams) a detailed assessment is required. The idea of the detailed assessment is to draw upon all existing sources of information to constrain the uncertainties. The three main sources are local flood frequency analysis, where flood data are available; regional flood estimation from hydrologically similar catchments; and rainfall-runoff modelling using design storms as inputs. The three values obtained by these methods are then assessed and weighted in terms of their reliability to facilitate selection of the design flood. The uncertainty assessment of the various methods is based on confidence intervals, estimates of regional heterogeneity, data availability and sensitivity analyses of the rainfall-runoff model. As the definition of the design floods discussed above is based on probability concepts it is also important to examine the excess risk, i.e. the possibility of the occurrence of a flood exceeding the design levels. The excess risk is evaluated based on a so called Safety Check Flood (SCF), similar to the existing practice in other countries in Europe. The SCF is a vehicle to analyse the damage potential of an event of this

  9. Closure to "Inception point relationship for flat-sloped stepped spillways" by Sherry L. Hunt and Kem C. Kadavy

    USDA-ARS?s Scientific Manuscript database

    Stepped spillways applied to embankment dams have become more common for addressing deficiencies in spillway capacity for existing dams. Because flow characteristics behave differently in flat-sloped stepped spillways as compared to steep-sloped stepped spillways, research has increased in this are...

  10. 18 CFR 12.44 - Testing spillway gates.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 18 Conservation of Power and Water Resources 1 2012-04-01 2012-04-01 false Testing spillway gates. 12.44 Section 12.44 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT OF ENERGY REGULATIONS UNDER THE FEDERAL POWER ACT SAFETY OF WATER POWER PROJECTS AND PROJECT...

  11. 18 CFR 12.44 - Testing spillway gates.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 18 Conservation of Power and Water Resources 1 2013-04-01 2013-04-01 false Testing spillway gates. 12.44 Section 12.44 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT OF ENERGY REGULATIONS UNDER THE FEDERAL POWER ACT SAFETY OF WATER POWER PROJECTS AND PROJECT...

  12. 18 CFR 12.44 - Testing spillway gates.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 18 Conservation of Power and Water Resources 1 2011-04-01 2011-04-01 false Testing spillway gates. 12.44 Section 12.44 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT OF ENERGY REGULATIONS UNDER THE FEDERAL POWER ACT SAFETY OF WATER POWER PROJECTS AND PROJECT...

  13. 18 CFR 12.44 - Testing spillway gates.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 18 Conservation of Power and Water Resources 1 2014-04-01 2014-04-01 false Testing spillway gates. 12.44 Section 12.44 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT OF ENERGY REGULATIONS UNDER THE FEDERAL POWER ACT SAFETY OF WATER POWER PROJECTS AND PROJECT...

  14. 18 CFR 12.44 - Testing spillway gates.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Testing spillway gates. 12.44 Section 12.44 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT OF ENERGY REGULATIONS UNDER THE FEDERAL POWER ACT SAFETY OF WATER POWER PROJECTS AND PROJECT...

  15. 13. VIEW SHOWING MOST OF THE PERIMETER FROM SPILLWAY BOX ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    13. VIEW SHOWING MOST OF THE PERIMETER FROM SPILLWAY BOX TO END OF EAST DAM. FOREGROUND VIEW SHOWS TRIPLE WALL CONSTRUCTION OF TONGUE AND GROOVE PLANKING USED IN CRIBBING - Three Bears Lake & Dams, North of Marias Pass, East Glacier Park, Glacier County, MT

  16. 5. VIEW FROM TOP OF DAM ABOVE SPILLWAY LOOKING WESTERLY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. VIEW FROM TOP OF DAM ABOVE SPILLWAY LOOKING WESTERLY TO NORTHWESTERLY ACROSS RESERVOIR. TWO WATER INTAKE STRUCTURES AND FOOT BRIDGES IN FOREGROUND - Upper Doughty Dam, 200 feet west of Garden State Parkway, 1.7 miles west of Absecon, Egg Harbor City, Atlantic County, NJ

  17. 4. VIEW FROM NORTH SIDE OF SPILLWAY LOOKING WESTERLY AT ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    4. VIEW FROM NORTH SIDE OF SPILLWAY LOOKING WESTERLY AT THE TWO WATER INTAKE STRUCTURES AND FOOT BRIDGES - Upper Doughty Dam, 200 feet west of Garden State Parkway, 1.7 miles west of Absecon, Egg Harbor City, Atlantic County, NJ

  18. When air really matters: Flow depth relationships for stepped spillways

    USDA-ARS?s Scientific Manuscript database

    With changing demographics in the vicinity of aging embankment dams, hazard creep, a change in classification from low to significant or high, can become problematic and limit rehabilitation options. The most common deficiency for embankment dams due to hazard creep is inadequate spillway capacity....

  19. 29. SECTION DRAWINGS OF HEADGATE IN RIGHT (WEST) ABUTMENT, SPILLWAY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    29. SECTION DRAWINGS OF HEADGATE IN RIGHT (WEST) ABUTMENT, SPILLWAY, AND PENSTOCK Sections and profiles of dam and pipe line, Exhibit J(3). Prepared by C. F. Uhden, electrical engineer, for the Okanogan Valley Power Company, 1916. - Enloe Dam, On Similkameen River, Oroville, Okanogan County, WA

  20. Energy dissipation on a 4(H):1(V) stepped spillway

    USDA-ARS?s Scientific Manuscript database

    Many small earthen embankments are faced with inadequate spillway capacity due to filled sediment pools filled with sediment and sediment now filling flood pools. Additionally, hydrologic conditions have changed as a result of urbanization; thereby causing changes in the hazard classification of th...

  1. Research provides design options for stepped RCC spillway

    USDA-ARS?s Scientific Manuscript database

    Increased urbanization upstream and downstream and in the immediate vicinity of small flood control dams have caused many structures to experience inadequate spillway capacities. To meet dam safety standards, some of these structures are in need of immediate attention. Altering the dimensions of t...

  2. 5. GENERAL VIEW OF EASTERLY ELEVATION OF SPILLWAY; VIEW TO ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. GENERAL VIEW OF EASTERLY ELEVATION OF SPILLWAY; VIEW TO SOUTHWEST ACROSS CANAL PRISM, FROM ROUTE 146 EMBANKMENT. - Blackstone Canal Millbury Segment, Beginning northwest of State Route 146 & McCracken Road, running along west side of Route 146, Millbury, Worcester County, MA

  3. 27. VIEW FROM TOP OF SPILLWAY GATE STRUCTURE, LOOKING ACROSS ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    27. VIEW FROM TOP OF SPILLWAY GATE STRUCTURE, LOOKING ACROSS TOP OF DAM TOWARDS LEFT ABUTMENT. NOTE PUMPCRETE PIPELINE OF CATWALK WHICH IS USED TO DELIVER CONCRETE TO INCOMPLETE ARCHES ON LEFT SIDE. January 1, 1939 - Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

  4. 7. VIEW SOUTH OF SPILLWAY SECTION OF DAM WITH CONCRETE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. VIEW SOUTH OF SPILLWAY SECTION OF DAM WITH CONCRETE ABUTMENT TO LEFT, AND SHOWING FLASH BOARD SUPPORTS ON TOP OF DAM - Middle Creek Hydroelectric Dam, On Middle Creek, West of U.S. Route 15, 3 miles South of Selinsgrove, Selinsgrove, Snyder County, PA

  5. 6. UPSTREAM VIEW OF THE SPILLWAY OF THE POST FALLS ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. UPSTREAM VIEW OF THE SPILLWAY OF THE POST FALLS POWERHOUSE, WITH A PARTIAL VIEW OF THE MODERN TRANSFORMER IN THE FOREGROUND, AND THE OLD SWITCHING BUILDING IN THE LEFT BACKGROUND, LOOKING SOUTHEAST. - Washington Water Power Company Post Falls Power Plant, Middle Channel Powerhouse & Dam, West of intersection of Spokane & Fourth Streets, Post Falls, Kootenai County, ID

  6. Case Studies

    ERIC Educational Resources Information Center

    Ritter, Lois A., Ed.; Sue, Valerie M., Ed.

    2007-01-01

    This article presents two case studies using online surveys for evaluation. The authors begin with an example of a needs assessment survey designed to measure the amount of help new students at a university require in their first year. They then discuss the follow-up survey conducted by the same university to measure the effectiveness of the…

  7. Case Studies

    ERIC Educational Resources Information Center

    Ritter, Lois A., Ed.; Sue, Valerie M., Ed.

    2007-01-01

    This article presents two case studies using online surveys for evaluation. The authors begin with an example of a needs assessment survey designed to measure the amount of help new students at a university require in their first year. They then discuss the follow-up survey conducted by the same university to measure the effectiveness of the…

  8. Survival of Juvenile Chinook Salmon Passing the Bonneville Dam Spillway in 2007

    SciTech Connect

    Ploskey, Gene R.; Weiland, Mark A.; Hughes, James S.; Zimmerman, Shon A.; Durham, Robin E.; Fischer, Eric S.; Kim, Jina; Townsend, R. L.; Skalski, J. R.; Buchanan, Rebecca A.; McComas, Roy L.

    2008-12-01

    The U.S. Army Corps of Engineers Portland District (CENWP) funds numerous evaluations of fish passage and survival on the Columbia River. In 2007, the CENWP asked Pacific Northwest National Laboratory to conduct an acoustic telemetry study to estimate the survival of juvenile Chinook salmon passing the spillway at Bonneville Dam. This report documents the study results which are intended to be used to improve the conditions juvenile anadromous fish experience when passing through the dams that the Corps operates on the river.

  9. Survival Rates of Juvenile Salmonids Passing Through the Bonneville Dam and Spillway in 2008

    SciTech Connect

    Ploskey, Gene R.; Weiland, Mark A.; Faber, Derrek M.; Deng, Zhiqun; Johnson, Gary E.; Hughes, James S.; Zimmerman, Shon A.; Monter, Tyrell J.; Cushing, Aaron W.; Wilberding, Matthew C.; Durham, Robin E.; Townsend, R. L.; Skalski, J. R.; Buchanan, Rebecca A.; Kim, Jina; Fischer, Eric S.; Meyer, Matthew M.; McComas, Roy L.; Everett, Jason

    2009-12-28

    This report describes a 2008 acoustic telemetry survival study conducted by the Pacific Northwest National Laboratory for the Portland District of the U.S. Army Corps of Engineers. The study estimated the survival of juvenile Chinook salmon and steelhead passing Bonneville Dam (BON) and its spillway. Of particular interest was the relative survival of smolts detected passing through end spill bays 1-3 and 16-18, which had deep flow deflectors immediately downstream of spill gates, versus survival of smolts passing middle spill bays 4-15, which had shallow flow deflectors.

  10. Spillway and foundation erosion: Estimating progressive erosion extents

    SciTech Connect

    Wittler, R.J.; Mefford, B.W.; Abt, S.R.

    1995-12-31

    Causal estimates of the Probable Maximum Precipitation (PMP) and Probable Maximum Flood (PMF) are generally larger than a statistical estimate based upon historical records. Over the past thirty years causal methods have replaced statistical methods for estimating the PMP. These changes in estimating procedures have made dam owners aware of deficiencies in spillway capacity. Dam owners, faced with this new awareness, must show regulating agencies a plan for satisfying a deficiency. Allowing a dam to overtop is an alternative for satisfying a spillway deficiency. This alternative requires an analysis of the potential for erosion of the dam foundation and abutments. Current methods of evaluating erosion extents have limited applicability. Existing erosion prediction formulas do not track erosion as a function of time, and have limited application in hard-rock or cohesive foundation materials.

  11. PLANS AND SECTIONS. WEIR SPILLWAY. TEXAS HILL CANAL STA. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    PLANS AND SECTIONS. WEIR SPILLWAY. TEXAS HILL CANAL - STA. 132+82.15. TEXAS HILL CANAL AND DISTRIBUTION SYSTEM. United States Department of Interior, Bureau of Reclamation; Gila Project, Arizona, Wellton-Mohawk Division. Drawing No. 50-D-3200, dated February 7, 1955, Denver, Colorado - Wellton-Mohawk Irrigation System, Relift Station, Texas Hill Canal 2.5, Northern Terminus of Avenue 51 East, approximately .5 mile south of Union Pacific Railroad, Wellton, Yuma County, AZ

  12. 22. CLOSEUP VIEW OF A CANAL SPILLWAY LOCATED NORTHWEST OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    22. CLOSE-UP VIEW OF A CANAL SPILLWAY LOCATED NORTHWEST OF THE POWER PLANT. THE BRICK ARCH IN THE FOREGROUND IS A POSSIBLE REMNANT OF THE RAILROAD THAT USED TO BE LOCATED ON THE NORTHEAST SIDE OF THE FOUNDATIONS THAT THE POWER PLANT SITS UPON. - Potomac Power Plant, On West Virginia Shore of Potomac River, about 1 mile upriver from confluence with Shenandoah River, Harpers Ferry, Jefferson County, WV

  13. Burlington Spillway and Outlet Works, Souris River, North Dakota; Hydraulic Model Investigation.

    DTIC Science & Technology

    1986-06-01

    investigations to improve approach flows, improve spillway efficiency, and eliminate a vortex during combined spillway and outlet works operation... vortex at the entrance of the outlet works. 15. Numerous approach wall designs were tested in the model. Ulti- mately, the approach wall design shown...works tower essentially eliminated the occurrence of a vortex during combined spillway and outlet works operation. The efficiency of the flood

  14. Granger Lake, Embankment-Outlet Works-Spillway. Volume 2.

    DTIC Science & Technology

    1983-08-01

    conditiLOns (during the construction phase), Problems encountered and nethlods/solutiOris to resolve foundation problems during actual construction of Granger...only 44 Slab Drainage System Section D-D II Spillway sec- tions only 45 Logs of Borings, Drawing Index Index to borings 6DC-60 through 8A-599 (Plat 46...TYPICAL SECTION F ~(EMBANKMENT OVER" BUILD ) NOT To SCALE 5TA 0 +00 TO STA 12 +10 t !red ’co- 5 ee 5he f fL e-- E 3 .mrper-vL1iounc * El 51,3

  15. 32. SPILLWAY CHANNEL WALLS REINF. DETAILS; MONOLITHS E22, E23, W22, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    32. SPILLWAY CHANNEL WALLS REINF. DETAILS; MONOLITHS E-22, E-23, W-22, AND W-23. Sheet S-46, May, 1940. File no. 342/59. - Prado Dam, Spillway, Santa Ana River near junction of State Highways 71 & 91, Corona, Riverside County, CA

  16. Ice Harbor Spillway Dissolved Gas Field Studies: Before and After Spillway Deflectors

    DTIC Science & Technology

    2016-07-01

    profiler to allow TDG flux computations. The comparison of TDG mass flux estimates for different operations could be used to determine the relative ...spill and for the remainder of the testing, they differed by about 3 percentage points. Close examination of Figure 11 will show that the lower TDG...Steven C. Wilhelms Coastal And Hydraulics Laboratory U.S. Army Engineer Research and Development Center 3909 Halls Ferry Road Vicksburg, Mississippi

  17. Case Study: Testing with Case Studies

    ERIC Educational Resources Information Center

    Herreid, Clyde Freeman

    2015-01-01

    This column provides original articles on innovations in case study teaching, assessment of the method, as well as case studies with teaching notes. This month's issue discusses using case studies to test for knowledge or lessons learned.

  18. Case Study: Testing with Case Studies

    ERIC Educational Resources Information Center

    Herreid, Clyde Freeman

    2015-01-01

    This column provides original articles on innovations in case study teaching, assessment of the method, as well as case studies with teaching notes. This month's issue discusses using case studies to test for knowledge or lessons learned.

  19. Discussion of "Aeration, flow instabilities, and residual energy on pooled stepped spillways of embankment dams" by Stephen Felder and Hubert Chanson

    USDA-ARS?s Scientific Manuscript database

    Stepped spillways applied to embankment dams provide overtopping protection and address a common deficiency in aging dams by providing increased spillway capacity. Pooled-stepped spillways offer a design alternative to the traditional flat-stepped spillways. Researchers from the University of Quee...

  20. Juvenile Salmonid survival, passage, and egress at McNary Dam during tests of temporary spillway weirs, 2009

    USGS Publications Warehouse

    Adams, N.S.; Liedtke, T.L.

    2010-01-01

    The TSWs proved to be a relatively effective way to pass juvenile salmonids at McNary Dam (Summary Tables 1.1, 1.2, and 1.3), as was the case in 2007 and 2008. The TSWs passed about 14% of yearling Chinook salmon and 34% of juvenile steelhead with only 5-10% of total project discharge flowing through the TSWs. The TSWs and adjacent spill bays 16-18 passed 27% of subyearling Chinook salmon in the summer with 6-16% of total project discharge flowing through the TSWs. Based on the number of fish passing per the proportion of water flowing through the spillway (i.e., passage effectiveness), the TSWs were the most effective passage route. Passage effectiveness for fish passing through both TSW structures was 2.0 for yearling Chinook salmon, 5.2 for juvenile steelhead, and 2.7 subyearling Chinook salmon for TSW 20 alone. Higher passage of juvenile steelhead through the TSWs could have resulted from juvenile steelhead being more surface-oriented during migration (Plumb et al. 2004; Beeman et al. 2007; Beeman and Maule 2006). Based on passage performance and effectiveness metrics, TSW 4, located on the north end of the spillway, did not perform as well as TSW 20, located on the south end of the spillway. Passage proportions for TSW 4 were at least half that of the levels observed for TSW 20 for both yearling Chinook salmon and juvenile steelhead. This difference may be attributed to TSW location or other variables such as dam operations. Regardless of which TSW was used by fish passing the dam, survival through both TSWs was high (> 0.98 for paired-release dam survival) for yearling Chinook salmon and juvenile steelhead.

  1. CASE STUDY CRITIQUE; UPPER CLINCH CASE STUDY

    EPA Science Inventory

    Case study critique: Upper Clinch case study (from Research on Methods for Integrating Ecological Economics and Ecological Risk Assessment: A Trade-off Weighted Index Approach to Integrating Economics and Ecological Risk Assessment). This critique answers the questions: 1) does ...

  2. Case Study: Writing a Journal Case Study

    ERIC Educational Resources Information Center

    Prud'homme-Genereux, Annie

    2016-01-01

    This column provides original articles on innovations in case study teaching, assessment of the method, as well as case studies with teaching notes. This month's issue describes incorporating a journal article into the classroom by first converting it into a case study.

  3. Case Study: Writing a Journal Case Study

    ERIC Educational Resources Information Center

    Prud'homme-Genereux, Annie

    2016-01-01

    This column provides original articles on innovations in case study teaching, assessment of the method, as well as case studies with teaching notes. This month's issue describes incorporating a journal article into the classroom by first converting it into a case study.

  4. 49. HORSE MESA DAM, AUXILIARY SPILLWAY, 40.0' x 44.5' REGULATING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    49. HORSE MESA DAM, AUXILIARY SPILLWAY, 40.0' x 44.5' REGULATING GATE HOIST. INSTALLATION ASSEMBLY February 3, 1937 - Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricopa County, AZ

  5. Repair, Evaluation, Maintenance, and Rehabilitation Research Program. Geotechnical Aspects of Rock Erosion in Emergency Spillway Channels

    DTIC Science & Technology

    1986-08-01

    Formations arp exposed at the damsite. The Grafford Formation is covered ini the valley but is well exposed in the lower end of the spillway discharge...channel. The formation consista prodominantly of soft-to-moderately hard multicolored shales and a 20+ ft-thick sandstone bed occurring approximately...20 ft below the base of the overlying Winchell Formation . 39 7/ "LAN Mai 10 1 ’* C- ’Sao isvefl - - w~ -cIsm ,ISO Figure 19. Spillway plan and

  6. Foundation Report, Dam & Spillway, Taylorsville Lake, Ohio River Basin, Salt River, Kentucky.

    DTIC Science & Technology

    1983-04-01

    earth core, rock-filled dam ; an operating tower; conduit and stilling basin in the right abutment; an open cut uncon- trolled spillway through the right...Engineering Company (Rural Route 3, Harrisburg, Illinois 62946). It involved construction of an earth core, rock-filled dam ; an open cut uncontrolled... earth materials for later use in the dam . These stockpiles were located adjacent to the spillway and in the upstream area so designated above the dam

  7. Validation of numerical simulation of the mean flow and turbulence on the non-aerated zone of a stepped spillway

    NASA Astrophysics Data System (ADS)

    Toro, J. P.

    2014-12-01

    The present work includes the study of the mean flow and turbulent statistics in the non-aerated zone of a stepped spillway by using the RANS (Reynolds Averaged Navier Stokes) equations with closures provided by the k-e , and RNG (Renormalization Group) k-e models in 2D. Numerical results obtained with the OpenFOAM (Open source Field Operation And Manipulation) toolbox, are compared with the Particle Image Velocimetry (PIV) experimental measurements of Amador (Amador 2005; Amador et al., 2006). We conclude that the numerical simulations thoroughly reproduce the experimental measurements of the averaged velocity flow field, and the turbulent statistics.

  8. Agri-spillways as soil erosion protection tools in conventional sloping vineyards (Montes de Málaga, Spain)

    NASA Astrophysics Data System (ADS)

    Rodrigo-Comino, Jesús

    2017-04-01

    Rainfall causes soil erosion on Mediterranean sloping vineyards (>25˚ of slope inclination), however, little is known about information related to cheap, effective and suitable soil erosion protection measures. In the vineyards of the Montes de Málaga (southern Spain), a concrete land management practice against soil erosion is actually conducted by building tilled rills to down-slope direction to canalize water and sediments. We decided to call them agri-spillways. In this study, by carrying out runoff experiments, we assessed two agri-spillways (from 10 m to 15 m length) under extreme conditions. A motor driven pump mobilizes a constant water inflow about of 1.33 L s-1during between 12 and 15 minutes (≈1000 litres). Finally, we observed: i) a high capacity of these agri-spillways to canalize a large volume of water and sediments; and, ii) higher speed of water flow (from 0.16 m s-1to 0.28 m s-1) and sediment concentration (SC) rates with ratios up to 1538.6 g l-1). By comparing among them, the speed of water flow and the SC were much higher in one of tested rills, which was 5 meters length less and 7 degrees more of inclination. So, we concluded that these agri-spillways, after correctly planning and long term maintenance from contribution area to down-slope direction, can be function as a potential tool for designing suitable and cheap plans to protect the soil in Mediterranean sloping vineyards. Acknowledgements Firstly, we acknowledge the farmer's syndicate UPA (Unión de Pequeños Agricultores) and the wine-grower Pepe Gámez (Almáchar) for providing access to the study area. Secondly, we thank the students of the Bachelor course and Master from Trier University for their hard efforts in the field and laboratory works in the Almáchar campaign. Thirdly, we acknowledge the geomorphology and soil laboratory technicians María Pedraza and Rubén Rojas of GSoilLab (Málaga University) for the soil analysis. Finally, we also thank the Ministerio de Educaci

  9. Case Study Teaching

    ERIC Educational Resources Information Center

    Herreid, Clyde Freeman

    2011-01-01

    This chapter describes the history of case study teaching, types of cases, and experimental data supporting their effectiveness. It also describes a model for comparing the efficacy of the various case study methods. (Contains 1 figure.)

  10. Case Study Teaching

    ERIC Educational Resources Information Center

    Herreid, Clyde Freeman

    2011-01-01

    This chapter describes the history of case study teaching, types of cases, and experimental data supporting their effectiveness. It also describes a model for comparing the efficacy of the various case study methods. (Contains 1 figure.)

  11. Stability Analysis of a Run-of-River Diversion Hydropower Plant with Surge Tank and Spillway in the Head Pond

    PubMed Central

    Sarasúa, José Ignacio; Elías, Paz; Wilhelmi, José Román; Sánchez, José Ángel

    2014-01-01

    Run-of-river hydropower plants usually lack significant storage capacity; therefore, the more adequate control strategy would consist of keeping a constant water level at the intake pond in order to harness the maximum amount of energy from the river flow or to reduce the surface flooded in the head pond. In this paper, a standard PI control system of a run-of-river diversion hydropower plant with surge tank and a spillway in the head pond that evacuates part of the river flow plant is studied. A stability analysis based on the Routh-Hurwitz criterion is carried out and a practical criterion for tuning the gains of the PI controller is proposed. Conclusions about the head pond and surge tank areas are drawn from the stability analysis. Finally, this criterion is applied to a real hydropower plant in design state; the importance of considering the spillway dimensions and turbine characteristic curves for adequate tuning of the controller gains is highlighted. PMID:25405237

  12. Stability analysis of a run-of-river diversion hydropower plant with surge tank and spillway in the head pond.

    PubMed

    Sarasúa, José Ignacio; Elías, Paz; Martínez-Lucas, Guillermo; Pérez-Díaz, Juan Ignacio; Wilhelmi, José Román; Sánchez, José Ángel

    2014-01-01

    Run-of-river hydropower plants usually lack significant storage capacity; therefore, the more adequate control strategy would consist of keeping a constant water level at the intake pond in order to harness the maximum amount of energy from the river flow or to reduce the surface flooded in the head pond. In this paper, a standard PI control system of a run-of-river diversion hydropower plant with surge tank and a spillway in the head pond that evacuates part of the river flow plant is studied. A stability analysis based on the Routh-Hurwitz criterion is carried out and a practical criterion for tuning the gains of the PI controller is proposed. Conclusions about the head pond and surge tank areas are drawn from the stability analysis. Finally, this criterion is applied to a real hydropower plant in design state; the importance of considering the spillway dimensions and turbine characteristic curves for adequate tuning of the controller gains is highlighted.

  13. Bathymetric survey of the Brandon Road Dam Spillway, Joliet, Illinois

    USGS Publications Warehouse

    Engel, Frank; Krahulik, Justin

    2016-01-01

    Bathymetric survey data of the Brandon Road Dam spillway was collected on May 27 and May 28, 2015 by the US Geological Survey (USGS) using Trimble Real-Time Kinematic Global Positioning System (RTK-GPS) equipment. The base station was set up over a temporarily installed survey pin on both days. This pin was surveyed into an existing NGS benchmark (PID: BBCN12) within the Brandon Road Lock property. In wadeable sections, a GPS rover with 2.0 meter range pole and flat-foot was deployed. In sections unable to be waded, a 2.0 meter range pole was fix-mounted to a jon boat, and a boat-mounted Acoustic Doppler Current Profiler (ADCP) was used to collect the depth data. ADCP depth data were reviewed in the WinRiver II software and exported for processing with the Velocity Mapping Toolbox (Parsons and others, 2013). The RTK-GPS survey points of the water surface elevations were used to convert ADCP-measured depths into bed elevations. An InSitu Level Troll collected 1-minute water level data throughout the two day survey. These data were used to verify that a flat-pool assumption was reasonable for the conversion of the ADCP data to bed elevations given the measurement precision of the ADCP. An OPUS solution was acquired for each survey day.Parsons, D. R., Jackson, P. R., Czuba, J. A., Engel, F. L., Rhoads, B. L., Oberg, K. A., Best, J. L., Mueller, D. S., Johnson, K. K. and Riley, J. D. (2013), Velocity Mapping Toolbox (VMT): a processing and visualization suite for moving-vessel ADCP measurements. Earth Surf. Process. Landforms, 38: 1244–1260. doi: 10.1002/esp.3367

  14. Case Studies Behavior Modification.

    ERIC Educational Resources Information Center

    Wark, David M.

    The case histories of five students enrolled in a university course in how to study are reported. The students ranged in age from 18 to 35, included two males and three females, and varied in school experience from no college in one case and some college in two cases to college degrees in two cases. Students were initially taught to chart their…

  15. Spillway for Benbrook Dam, Clear Fork of the Trinity River, Texas: Model Investigation

    DTIC Science & Technology

    1949-03-01

    section at tho too of tho spillway to tho trapezoidal cross section of tho exit channel. Concreto training walls 11 ft in height will confine the...rould parmi t 6 spillway flow to attack the toe of the dam. A pilot channel 100 ft in width will connect the exit channel with the old river...channel about 7,000 ft below the dam. It is expected that the pilot channel will ulti- mately scour to the full width of the exit channel and to the

  16. Case study research.

    PubMed

    Taylor, Ruth; Thomas-Gregory, Annette

    2015-06-10

    This article describes case study research for nursing and healthcare practice. Case study research offers the researcher an approach by which a phenomenon can be investigated from multiple perspectives within a bounded context, allowing the researcher to provide a 'thick' description of the phenomenon. Although case study research is a flexible approach for the investigation of complex nursing and healthcare issues, it has methodological challenges, often associated with the multiple methods used in individual studies. These are explored through examples of case study research carried out in practice and education settings. An overview of what constitutes 'good' case study research is proposed.

  17. Thermal, Chemical and Physical Investigations into Lake Deepening Processes on Spillway Lake, Ngozumpa Glacier, Nepal

    NASA Astrophysics Data System (ADS)

    Horodyskyj, U. N.

    2014-12-01

    The Ngozumpa glacier is one of Nepal's largest and longest glaciers, fed by catchments on the slopes of Cho Oyu, the 6th highest peak in the world. Supraglacial lakes abound along its ~18-km-long ablation zone, but these are dwarfed in area and volume by Spillway lake, a terminal supraglacial lake that is currently expanding and deepening in the lowest kilometer of the glacier. This lake poses a potential future downstream flooding threat, hence there is a perceived need for continuous monitoring and for quantifying factors that lead to growth, deepening and potential instability. Point-interpolated depth surveys (2010/2012) by Thompson and others have revealed deepening hotspots in multiple locations within the lake. The current study reports University of Colorado surveys in 2013 and 2014 that quantify a) vertical water temperature variations in areas of deepening and shallowing; b) physical and chemical characteristics of dredged sediment samples from the lake floor; c) lake water chemistry; d) lake floor bathymetry imaged using high-resolution side-scan sonar and e) lake bottom hardness and roughness. These parameters are analyzed with a view to assessing their role in controlling lake floor deepening and growth.

  18. Energy dissipation on flat-sloped stepped spillways: Part 2. Downstream of the inception point

    USDA-ARS?s Scientific Manuscript database

    Many small earthen embankments are faced with inadequate spillway capacity due to filled sediment pools filled with sediment and sediment now filling flood pools. Additionally, hydrologic conditions have changed as a result of urbanization; thereby causing changes in the hazard classification of th...

  19. Sedimentology of Pennsylvanian sandstone from bedding-plane exposures, Laurel dam spillway, eastern Kentucky Coalfield

    SciTech Connect

    Greb, S.F.; Chesnut, D.R. Jr. )

    1989-08-01

    Exposures of bedding planes in a coarsening-upward sequence of the Breathitt Formation at the Laurel Dam spillway in Whitley County, Kentucky, were analyzed by surveying a 250,000-ft{sup 2} area on a 10-ft grid and mapping within grids.

  20. On continuity case studies.

    PubMed

    Lindstedt, David; Lombardo, Timothy

    This article is divided into three sections. The first section provides a taxonomy of case studies within the field of business continuity along with a brief commentary. The second section discusses the proper use of case studies in general pedagogy and provides research-based recommendations for their employment. The third section provides suggestions and examples of how business continuity case studies might be utilised specifically for instruction in the discipline of business continuity planning.

  1. [Case and studies].

    PubMed

    Schubert, András

    2015-11-15

    Case studies and case reports form an important and ever growing part of scientific and scholarly literature. The paper deals with the share and citation rate of these publication types on different fields of research. In general, evidence seems to support the opinion that an excessive number of such publications may negatively influence the impact factor of the journal. In the literature of scientometrics, case studies (at least the presence of the term "case study" in the titles of the papers) have a moderate share, but their citation rate is practically equal to that of other publication types.

  2. SETDA Case Studies 2012

    ERIC Educational Resources Information Center

    State Educational Technology Directors Association, 2012

    2012-01-01

    The State Educational Technology Directors Association (SETDA) published a series of case studies from 28 states to showcase examples of how ARRA EETT ("American Recovery and Reinvestment Act of 2009 Enhancing Education Through Technology") grant funds have impacted teaching and learning. SETDA collected data for the case studies through…

  3. Case Study: Challenging Change.

    ERIC Educational Resources Information Center

    May, Steven K.

    2003-01-01

    Discusses a case study involving organizational change and its effect on employees. Presents three responses to the case study: "Paradox of Ordering Change: I Insist That We Work as a Team" (Paaige K. Turner); "Managing Change Is Managing Meaning" (Greg Hearn and Abraham Ninan); and "The Psychodynamics of an Organizational Change Initiative"…

  4. Work Sharing Case Studies.

    ERIC Educational Resources Information Center

    McCarthy, Maureen E.; And Others

    Designed to provide private sector employers with the practical information necessary to select and then to design and implement work sharing arrangements, this book presents case studies of some 36 work sharing programs. Topics covered in the case studies include the circumstances leading to adoption of the program, details of compensation and…

  5. Case Study: Challenging Change.

    ERIC Educational Resources Information Center

    May, Steven K.

    2003-01-01

    Discusses a case study involving organizational change and its effect on employees. Presents three responses to the case study: "Paradox of Ordering Change: I Insist That We Work as a Team" (Paaige K. Turner); "Managing Change Is Managing Meaning" (Greg Hearn and Abraham Ninan); and "The Psychodynamics of an Organizational Change Initiative"…

  6. Septic Systems Case Studies

    EPA Pesticide Factsheets

    A collection of septic systems case studies to help community planners, elected officials, health department staff, state officials, and interested citizens explore alternatives for managing their decentralized wastewater treatment systems.

  7. HYDROGEOLOGIC CASE STUDIES

    EPA Science Inventory

    Hydrogeology is the foundation of subsurface site characterization for evaluations of monitored natural attenuation (MNA). Three case studies are presented. Examples of the potentially detrimental effects of drilling additives on ground-water samples from monitoring wells are d...

  8. MULTIPLE CONTAMINANTS CASE STUDIES

    EPA Science Inventory

    The presentation provides information taken from the arsenic demonstration program projects that have treatment systems removing multiply contaminants from drinking water. The case studies sited in the presentation consist of projects that have arsenic along with either nitrate, ...

  9. MULTIPLE CONTAMINANTS CASE STUDIES

    EPA Science Inventory

    The presentation provides information taken from the arsenic demonstration program projects that have treatment systems removing multiply contaminants from drinking water. The case studies sited in the presentation consist of projects that have arsenic along with either nitrate, ...

  10. HYDROGEOLOGIC CASE STUDIES

    EPA Science Inventory

    Hydrogeology is the foundation of subsurface site characterization for evaluations of monitored natural attenuation (MNA). Three case studies are presented. Examples of the potentially detrimental effects of drilling additives on ground-water samples from monitoring wells are d...

  11. Jadwin Dam Condition Report. Dam, Outlet Works & Spillway Periodic Inspection Report Number 4. Lackawaxen River Basin, Dyberry Creek, Pennsylvania.

    DTIC Science & Technology

    1980-11-01

    AD-A098 782 ARMY ENGINEER DISTRICTE PHILADELPHIA PA FIG 13/13 JADAI N DAM CONDITION REPORT. DA, OUTLET WORKS & SPILLWAY PERIO-ETC (U) UNCLASSIFIED...HUJREALI f ANDARD, 1961, L -GOVED FOR PUBLIC RELEASE; DISTRIBUtiON UNLIMITED. LACKAWAXEN RIVER BASIN * DYBERRY CREEK, PENNSYLVANIA DClJADWIN DAM DTIC ELECTE...MAY 1 2 1981fl CONDITION REFORT E DAM , OUTLET WORKS a SPILLWAY - PERIODIC INSPECTION REPORT NO. 4 NOVEMBER 1980 DEPARTMENT OF THE ARMY 0. PHILADELPHIA

  12. Approach, passage, and survival of juvenile salmonids at Little Goose Dam, Washington: Post-construction evaluation of a temporary spillway weir, 2009

    USGS Publications Warehouse

    Beeman, John W.; Braatz, Amy C.; Hansel, Hal C.; Fielding, Scott D.; Haner, Philip V.; Hansen, Gabriel S.; Shurtleff, Dana J.; Sprando, Jamie M.; Rondorf, Dennis W.

    2010-01-01

    This report describes a study of dam passage and survival of radio-tagged juvenile salmonids after installation of a temporary spillway weir (TSW) at Little Goose Dam, Washington, in 2009. The purpose of the study was to document fish passage and survival when the dam was operated with the TSW in place. Spillway weirs are one of several methods used to improve downstream passage of juvenile salmonids. Each spillway weir design is based on the concept of providing an overflow weir with a depth more similar to the natural migration depth of juvenile salmonids than conventional spill bays. Little Goose Dam was the last of the four lower Snake River dams to have a spillway weir installed. This was the first year that some form of surface passage device was operating at all Snake River and Columbia River dams between Lewiston, Idaho, and the Columbia River estuary. The study design stipulated that a total of 30 percent of the river discharge would continuously be passed over the TSW and the conventional spill bays, and this percentage was achieved. The TSW also was to be operated at the ?low crest? elevation during the spring and the ?high crest? elevation during the summer, but the TSW was only operated at the low crest elevation during this study. Behavior, passage, and survival of spring and summer juvenile salmonid migrants passing through Little Goose Dam were examined using radio telemetry. Survival was estimated using the Route Specific Survival Model (RSSM) by releasing tagged fish near Central Ferry State Park 21 kilometers upstream of the dam and in the tailrace approximately 0.5 kilometer downstream of the dam. From April 18 to May 21, 2009, 1,520 yearling Chinook salmon (Oncorhynchus tshawytscha) and 1,517 juvenile steelhead (O. mykiss) were radio tagged and released. From June 6 to July 5, 2009, 4,251 subyearling Chinook salmon (O. tshawytscha) were radio tagged and released. Release dates of subyearling Chinook salmon were selected to avoid ?reservoir

  13. [Qualitative case study].

    PubMed

    Debout, Christophe

    2016-06-01

    The qualitative case study is a research method which enables a complex phenomenon to be explored through the identification of different factors interacting with each other. The case observed is a real situation. In the field of nursing science, it may be a clinical decision-making process. The study thereby enables the patient or health professional experience to be conceptualised. Copyright © 2016. Published by Elsevier Masson SAS.

  14. Completion of Embankment and Spillway, Joe Pool Lake, Mountain Creek, Texas.

    DTIC Science & Technology

    1988-02-01

    the spillway were drilled through the 4-inch protective concrete slab and 12-inch sand filter blanket to a total depth of 15 feet into the Eagle Ford...Shale using the pneumatic drill. Holes in the drop structure penetrated the protective slab directly into the shale - no filter was present. In the...tended to dissipate vertically. Soon after exposure, the bedrock began to show signs of deterioration such as lightened color, hair-line cracks, and

  15. Simplified Earthquake Analysis of Gated Spillway Monoliths of Concrete Gravity Dams

    DTIC Science & Technology

    1989-03-01

    propagating pressure wave incident on the reservoir bottom [4,7,8,9]; a = I indicates that pressure waves are completed reflected, and smaller values of...x indicate increasingly absorptive materials. The results of many analyses of the two "standard" spillway cross-sections, using the procedures...tests on dams indicate that the viscous damping ratio 1 for concrete dams is in the range of 1 to 3 percent. However, for the large motions and high

  16. Distance Learning Case Studies.

    ERIC Educational Resources Information Center

    Barker, Bruce O.

    The Office of Technology Assessment authorized a series of case studies in 1989 to investigate how technologies, services, and programs are implemented in distance education projects. The studies were also intended to look at the role of local, state, and federal agencies, and other public and private entities in providing educational services to…

  17. Geothermal Case Studies

    DOE Data Explorer

    Young, Katherine

    2014-09-30

    database.) In fiscal year 2015, NREL is working with universities to populate additional case studies on OpenEI. The goal is to provide a large enough dataset to start conducting analyses of exploration programs to identify correlations between successful exploration plans for areas with similar geologic occurrence models.

  18. Case Studies in Biology.

    ERIC Educational Resources Information Center

    Zeakes, Samuel J.

    1989-01-01

    A case study writing exercise used in a course on parasitology was found to be a powerful learning experience for students because it involved discipline-based technical writing and terminology, brought the students in as evaluators, applied current learning, caused interaction among all students, and simulated real professional activities. (MSE)

  19. Characterization of Fish Passage Conditions through a Francis Turbine, Spillway, and Regulating Outlet at Detroit Dam, Oregon, Using Sensor Fish, 2009

    SciTech Connect

    Duncan, Joanne P.; Carlson, Thomas J.

    2011-05-06

    Fish passage conditions through two spillways, a Francis turbine, and a regulating outlet (RO) at Detroit Dam on the North Santiam River in Oregon were evaluated by Pacific Northwest National Laboratory for the U.S. Army Corps of Engineers (USACE), Portland District, using Sensor Fish devices. The objective of the study was to describe and compare passage exposure conditions, identifying potential fish injury regions within the routes. The study was performed in July, October, and December 2009 concurrent with HI-Z balloon-tag studies by Normandeau Associates, Inc. Sensor Fish data were analyzed to estimate 1) exposure conditions, particularly exposure to severe strike, collision, and shear events by passage route sub-regions; 2) differences in passage conditions between passage routes; and 3) relationships to live-fish injury and mortality data estimates. Comparison of the three passage routes evaluated at Detroit Dam indicates that the RO passage route through the 5-ft gate opening was relatively the safest route for fish passage under the operating conditions tested; turbine passage was the most deleterious. These observations were supported also by the survival and malady estimates obtained from live-fish testing. Injury rates were highest for turbine and spillway passage. However, none of the passage routes tested is safe for juvenile salmonid passage.

  20. Qualitative Case Study Guidelines

    DTIC Science & Technology

    2013-11-01

    methods in public relations and marketing communications. New York, Routledge 166-185 13. Denzin , N. K. (1978) The Research Act: A Theoretical...Introduction to Sociological Methods. 2nd ed. New York, McGraw-Hill 14. Denzin , N. K. and Lincoln, Y. S. (2011) The SAGE Handbook of Qualitative...The Art of Science. In: Denzin , N. K. and Lincoln, Y. S. (eds.) Handbook of Qualitative Research. Thousand Oaks, Sage 19. GAO (1990) Case Study

  1. Remediation case studies: Bioremediation

    SciTech Connect

    1995-03-01

    The purpose of this report is to provide case studies of site cleanup projects utilizing bioremediation. This volume contains reports on nine projects that include bioventing and land treatment technologies, as well as a unique, large-scale slurry-phase project. In these projects, petroleum hydrocarbons are the most frequent contaminants of concern. Two land treatment projects in this volume represent completed cleanups at creosote sites.

  2. Exploration case studies

    NASA Astrophysics Data System (ADS)

    Underwood, Jimmy M.

    1989-04-01

    NASA's Office of Exploration has undertaken four case studies for prospective expansion of manned space activities beyond earth orbit. The subjects of these studies are (1) an expedition to the Martian moon Phobos; (2) a three-mission expedition to Mars; (3) the construction of a man-tended lunar observatory; and (4) the construction of a lunar outpost to serve as the basis for construction of a Martian outpost. The fourth alternative would follow the recommendation of the National Commission on Space for the creation of a 'bridge between worlds' in which explorers would develop ways in which to 'live off the land' in a space environment.

  3. Water quality and phytoplankton communities in Lake Pontchartrain during and after the Bonnet Carré Spillway opening, April to October 2008, in Louisiana, USA

    NASA Astrophysics Data System (ADS)

    Mize, Scott V.; Demcheck, Dennis K.

    2009-12-01

    of blue-green algae, particularly the harmful algae bloom taxa. Cell densities and biovolume of the phytoplankton lake indicator taxa Skeletonema costatum, Anabaena sp., and Cylindrospermopsis raciborskii were highest and dominated the diatom and blue-green algae communities during the period of most river water influence on the lake and immediately following the freshwater inflows. The dominance and recession of these indictor taxa reflect the dramatic changes that occurred in the phytoplankton community in response to an increase in nutrient-rich freshwater from the diversion into the lake, and not normal seasonal phytoplankton compositional differences. Water-quality data indicated a gradual reversion to pre-diversion lake conditions by June to July, but shifts in the phytoplankton composition were still evident through August 2008. Observations from this study were similar to results from previous studies of Mississippi River/Bonnet Carré Spillway diversion opening in 1997.

  4. Water quality and phytoplankton communities in lake Pontchartrain during and after the Bonnet Carre spillway opening, April to October 2008, in Louisiana, USA

    USGS Publications Warehouse

    Mize, Scott V.; Demcheck, Dennis K.

    2009-01-01

    of blue-green algae, particularly the harmful algae bloom taxa. Cell densities and biovolume of the phytoplankton lake indicator taxaSkeletonema costatum, Anabaena sp., and Cylindrospermopsis raciborskii were highest and dominated the diatom and blue-green algae communities during the period of most river water influence on the lake and immediately following the freshwater inflows. The dominance and recession of these indictor taxa reflect the dramatic changes that occurred in the phytoplankton community in response to an increase in nutrient-rich freshwater from the diversion into the lake, and not normal seasonal phytoplankton compositional differences. Water-quality data indicated a gradual reversion to pre-diversion lake conditions by June to July, but shifts in the phytoplankton composition were still evident through August 2008. Observations from this study were similar to results from previous studies of Mississippi River/Bonnet Carré Spillway diversion opening in 1997.

  5. INLET TRANSITION WEIR SPILLWAY OUTLET STRUCTURE. T.H. 2.5 PUMPING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    INLET TRANSITION - WEIR SPILLWAY OUTLET STRUCTURE. T.H. 2.5 PUMPING PLANT. TEXAS HILL CANAL - STA. 132+00.00. TEXAS HILL CANAL AND DISTRIBUTION SYSTEM. United States Department of Interior, Bureau of Reclamation; Gila Project, Arizona, Wellton-Mohawk Division. Drawing No. 50-D-3198, dated January 24, 1955, Denver, Colorado - Wellton-Mohawk Irrigation System, Relift Station, Texas Hill Canal 2.5, Northern Terminus of Avenue 51 East, approximately .5 mile south of Union Pacific Railroad, Wellton, Yuma County, AZ

  6. Conducting and Reporting Case Studies.

    ERIC Educational Resources Information Center

    Lichtman, Merilyn; Taylor, Satomi Izumi

    Issues and elements of case study research are explored and illustrated with the example of a case study of a kindergarten in a suburb of Tokyo (Japan). Case study research is a type of qualitative research that concentrates on a single unit or entity, with boundaries established by the researcher. The case is an example drawn from a larger class,…

  7. Remaining Sites Verification Package for the 100-B-26 Spillway, Waste Site Reclassification Form 2006-052

    SciTech Connect

    L. M. Dittmer

    2006-09-18

    The 100-B-26 Spillway waste site is a spillway that served as an emergency discharge point for the 132-C-2 outfall in the event that the 100-B-15 river effluent pipelines were blocked, damaged, or undergoing maintenance. The selected action involved demonstrating through confirmatory sampling that cleanup goals have been met and proposing a reclassification of this site to No Action. The results of the confirmatory sampling demonstrate that residual contaminant concentrations remaining in the soil beneath the riprap are more protective of groundwater and the Columbia River than the risk they would pose if the site was remediated.

  8. Remaining Sites Verification Package for the 100-B-24 Spillway, Waste Site Reclassification Form 2006-051

    SciTech Connect

    L. M. Dittmer

    2006-09-18

    The 100-B-24 Spillway is a spillway that was designed to serve as an emergency discharge point for the 116-B-7 outfall in the event that the 100-B-15 river effluent pipelines were blocked, damaged, or undergoing maintenance. The site meets the remedial action objectives specified in the Remaining Sites ROD. The results of confirmatory sampling show that residual contaminant concentrations do not preclude any future uses and allow for unrestricted use of shallow zone soils. The results also demonstrate that residual contaminant concentrations are protective of groundwater and the Columbia River.

  9. PREDICT : A CASE STUDY.

    SciTech Connect

    Kerscher, W. J. III; Booker, J. M.; Meyer, Mary A.

    2001-01-01

    Delphi Automotive Systems and the Los Alamos National Laboratory worked together to develop PREDICT, a new methodology to characterize the reliability of a new product during its development program. Rather than conducting testing after hardware has been built, and developing statistical confidence bands around the results, this updating approach starts with an early reliability estimate characterized by large uncertainty, and then proceeds to reduce the uncertainty by folding in fresh information in a Bayesian framework. A considerable amount of knowledge is available at the beginning of a program in the form of expert judgment which helps to provide the initial estimate. This estimate is then continually updated as substantial and varied information becomes available during the course of the development program. This paper presents a case study of the application of PREDICT, with the objective of further describing the methodology. PREDICT has been honored with an R&D 100 Award presented by R&D Magazine.

  10. Characterizing the Fish Passage Environment at The Dalles Dam Spillway: 2001-2004

    SciTech Connect

    Richmond, Marshall C.; Carlson, Thomas J.; Serkowski, John A.; Cook, Chris B.; Duncan, Joanne P.; Perkins, William A.

    2007-10-10

    The spill environment at The Dalles Dam in 2001-2004 was characterized using a field-deployed autonomous sensor (the so-called Sensor Fish), computational fluid dynamics (CFD) modeling, and Lagrangian particle tracking. The sensor fish has a self-contained capability to digitally the record pressure and triaxial accelerations it was exposed to following its release into the spillway. After recovery downstream of the tailrace, the data stored in the memory of the sensor are downloaded and stored for analysis. The spillway, stilling basin, and tailrace hydrodynamics were simulated using an unsteady, free-surface, three-dimensional CFD code that solved the Reynolds-averaged Navier-Stokes equations in conjunction with a two-equation turbulence model. The results from the CFD simulations were then used in a Lagrangian particle tracking model that included the effects of mass, drag, and buoyancy in the particle equation of motion. A random walk method was used to simulate the effects of small-scale turbulence on the particle motion. Several operational and structural conditions were evaluated using the Sensor Fish, CFD, and particle tracking. Quantifying events such as strike and stilling basin retention time characterized exposure conditions in the spill environment.

  11. Flow depth and energy coefficient relatiohnships for stepped spillways

    USDA-ARS?s Scientific Manuscript database

    A multi-year, large-scale physical model study of stepped chutes was conducted over a broad range of design parameters (i.e. step heights, slopes, and unit discharges). Air entrainment developed naturally as the flow descended the chute. Air entrainment began to develop downstream of the surface i...

  12. Termination: A Case Study.

    PubMed

    Friedberg, Ahron L

    2015-12-01

    In this article I posit and examine certain criteria and qualities for ending an analysis. The case study describes the end phase of a four-year psychoanalysis in which the patient's decision to move to another area forced the end of his analysis. We continued to explore and work through his core neurotic conflicts that included issues of competitive rivalry, dominance and submission, control, and anxiety about birth and death. A shift in the transference from me as a negative father to me as a supportive but competitive older brother was also examined in the context of ending treatment as well as other aspects of the transference. In addition, we analyzed the meaning of his ending treatment based on an extra-analytic circumstance. In discussing this phase of treatment, the definition and history of the term "termination" and its connotations are reviewed. Various criteria for completing an analysis are examined, and technical observations about this phase of treatment are investigated. It was found that while a significant shift in the transference occurred in this phase of the patient's analysis, conflicts related to the transference were not "resolved" in the classical sense. Terminating treatment was considered as a practical matter in which the patient's autonomy and sense of choice were respected and analyzed.

  13. Dioxin: a case study.

    PubMed

    Bond, G G

    1993-01-01

    The need to notify individuals of a possible health risk from their past exposure to potentially hazardous agents frequently extends beyond workers to include community groups. The issues to consider in community notification are frequently similar to those that are important for worker notification but may include some that are unique. This case study traces the evolution of one company's strategy for communicating with the public about possible dioxin contamination associated with its operations. Early communications tended to emphasize the technical aspects of the issues in the fashion of scientists talking to other scientists. This was interpreted by some to be symptomatic of an arrogant and uncaring attitude. Beginning in the early 1980s, the company's management recognized the need to reach out to a variety of audiences on multiple levels, and shifted to a more comprehensive communications strategy. A similar shift is now occurring throughout the chemical manufacturing industry as top managers realize that, if they expect to continue to operate, they must become more accountable and responsive to the public.

  14. Discussion of "Simple design criterion for residual energy on embankment dam stepped spillways" by Stefan Felder and Hubert Chanson

    USDA-ARS?s Scientific Manuscript database

    Researchers from the University of Queensland of New South Wales provided guidance to designers regarding the hydraulic performance of embankment dam stepped spillways. Their research compares a number of high-quality physical model data sets from multiple laboratories, emphasizing the variability ...

  15. Natural Learning Case Study Archives

    ERIC Educational Resources Information Center

    Lawler, Robert W.

    2015-01-01

    Natural Learning Case Study Archives (NLCSA) is a research facility for those interested in using case study analysis to deepen their understanding of common sense knowledge and natural learning (how the mind interacts with everyday experiences to develop common sense knowledge). The database comprises three case study corpora based on experiences…

  16. Natural Learning Case Study Archives

    ERIC Educational Resources Information Center

    Lawler, Robert W.

    2015-01-01

    Natural Learning Case Study Archives (NLCSA) is a research facility for those interested in using case study analysis to deepen their understanding of common sense knowledge and natural learning (how the mind interacts with everyday experiences to develop common sense knowledge). The database comprises three case study corpora based on experiences…

  17. The Paradox of Case Study.

    ERIC Educational Resources Information Center

    Simons, Helen

    1996-01-01

    Examines the paradox of case studies' abilities to understand the complexity in particular contexts while not being generalizable. Argues that the pressure for quantification and multisite case study design in policy research has weakened the original utility of the case study method for understanding complex educational phenomena. (DSK)

  18. Teaching Pharmacology by Case Study.

    ERIC Educational Resources Information Center

    Jordan, Sue

    1997-01-01

    Using pharmacology case studies with nursing students encourages theory-practice links and infuses real-life content. Cases provide rich qualitative data for evaluating curriculum. However, they are not a substitute for evidence-based practice. (SK)

  19. Case study--leprosy.

    PubMed

    Wood, A M; Wood, C M; Bakker-Dyos, J

    2010-01-01

    We present the case of a 26 year old Indian base worker who attended the Role 2 enhanced hospital in Iraq with a case of leprosy. The patient presented four times over a 12 month period with non-specific pain in the right hand and forearm combined with a large lesion of dry skin and reduced sensation in the forearm. A clinical diagnosis of leprosy was made, which was subsequently confirmed as paucibacillary leprosy by skin smears sent to the UK. It was not possible to treat the patient locally and a recommendation made to the patient's employer that the patient return to India to commence treatment.

  20. Emotion, Engagement, and Case Studies

    ERIC Educational Resources Information Center

    Herreid, Clyde Freeman; Terry, David R.; Lemons, Paula; Armstrong, Norris; Brickman, Peggy; Ribbens, Eric

    2014-01-01

    Three college faculty taught large general biology classes using case studies and personal response systems (clickers). Each instructor taught the same eight cases in two different sections, except the questions within the cases differed. In one section the questions were lower order (LO) factual inquiries, and in the other they were largely…

  1. Emotion, Engagement, and Case Studies

    ERIC Educational Resources Information Center

    Herreid, Clyde Freeman; Terry, David R.; Lemons, Paula; Armstrong, Norris; Brickman, Peggy; Ribbens, Eric

    2014-01-01

    Three college faculty taught large general biology classes using case studies and personal response systems (clickers). Each instructor taught the same eight cases in two different sections, except the questions within the cases differed. In one section the questions were lower order (LO) factual inquiries, and in the other they were largely…

  2. Case Study: Case Studies and the Flipped Classroom

    ERIC Educational Resources Information Center

    Herreid, Clyde Freeman; Schiller, Nancy A.

    2013-01-01

    This column provides original articles on innovations in case study teaching, assessment of the method, as well as case studies with teaching notes. This month's issue discusses the positive and negative aspects of the "flipped classroom." In the flipped classroom model, what is normally done in class and what is normally done as…

  3. Case Study: Case Studies and the Flipped Classroom

    ERIC Educational Resources Information Center

    Herreid, Clyde Freeman; Schiller, Nancy A.

    2013-01-01

    This column provides original articles on innovations in case study teaching, assessment of the method, as well as case studies with teaching notes. This month's issue discusses the positive and negative aspects of the "flipped classroom." In the flipped classroom model, what is normally done in class and what is normally done as…

  4. Online Collaborative Case Study Learning

    ERIC Educational Resources Information Center

    Lee, Kathryn

    2007-01-01

    Case study learning was integrated into a course designed to improve students' potential for academic success and increase student retention. Case studies related to self-regulation of behavior, motivation, and cognition for academic tasks were used to prompt students' critical thinking and facilitate deep learning of self-regulation topics,…

  5. Instructional Computing: Ten Case Studies.

    ERIC Educational Resources Information Center

    Hargan, Carol; Hunter, Beverly

    These case studies are written for educational institutions that wish to plan, extend, or improve their use of computers for learning and teaching. Each case study includes a brief description of each of the following: profile of the institution, history of the development of instructional computing, organization and management, student access to…

  6. Case Studies Reveal Camper Growth.

    ERIC Educational Resources Information Center

    Brannan, Steve; Fullerton, Ann

    1999-01-01

    Case studies in the National Camp Evaluation Project and National Inclusive Camp Practices project used interviews with counselors and parents about camper's growth to yield qualitative data for camp program evaluation. The importance, methods, and benefits of case studies are described. Sidebars give examples of comments on perceived camper…

  7. Fuzzy-Set Case Studies

    ERIC Educational Resources Information Center

    Mikkelsen, Kim Sass

    2017-01-01

    Contemporary case studies rely on verbal arguments and set theory to build or evaluate theoretical claims. While existing procedures excel in the use of qualitative information (information about kind), they ignore quantitative information (information about degree) at central points of the analysis. Effectively, contemporary case studies rely on…

  8. Three Community College Case Studies

    ERIC Educational Resources Information Center

    Wojtysiak, Joseph; Sutton, William J., II; Wright, Tommy; Brantley, Linda

    2011-01-01

    This article presents three case studies that focus on specific projects that are underway or have been completed. In the first case study, Joseph Wojtysiak and William J. Sutton, II discuss the Green Center of Central Pennsylvania, which is designed to serve as the state's preeminent source for education, training and public information about…

  9. The Big Read: Case Studies

    ERIC Educational Resources Information Center

    National Endowment for the Arts, 2009

    2009-01-01

    The Big Read evaluation included a series of 35 case studies designed to gather more in-depth information on the program's implementation and impact. The case studies gave readers a valuable first-hand look at The Big Read in context. Both formal and informal interviews, focus groups, attendance at a wide range of events--all showed how…

  10. Southern Appalachian Case Study

    Treesearch

    Charles C. van Sickle

    1999-01-01

    The Southern Appalachian study covers a region of 37.4 million acres. Its mountains, foothills, and valleys stretch from northern Virginia and northern West Virginia to northern Georgia and Alabama. When Native Americans came to the region, forests dominated the landscape and they still do, covering 70% of the land (Figure 32.1). Terrain characteristics are...

  11. Geostatistical case studies

    SciTech Connect

    Matheron, G.; Armstrong, M.

    1987-01-01

    The objective of this volume of contributed chapters is to present a series of applications of geostatistics. These range from a careful variographic analysis on uranium data, through detailed studies on geologically complex deposits, right up to the latest nonlinear methods applied to deposits with highly skewed data contributions. Applications of new techniques such as the external drift method for combining well data with seismic information have also been included. The volume emphasizes geostatistics in practice. Notation has been kept to a minimum and mathematical details have been relegated to annexes.

  12. Case Studies in Science Ethics

    NASA Astrophysics Data System (ADS)

    Williams, Karen

    2010-03-01

    Everyone in science should have ethics education training. I have seen graduate students taken advantage of by their mentors. Many of us have seen misconduct...but what should we do about it? Young scientists are often unaware of the rules in science and make mistakes because of their ignorance of the rules in that particular field of study. Then there are an increasing number of cases in the news of overt cases of misrepresentation in science. All are welcome to attend this discussion of case studies. A case study on topics such as: how to treat data properly, how our values in science affect our work, who gets authorship on scientific papers, who is first author on a paper, what you should do if you uncover misconduct or plagiarism in your university, and we will discuss the scientist's role in society. This will be a painless, non-confrontational small group, then large group discussion of each case

  13. Case study: a patient's survival.

    PubMed

    Nauer, K A; Kramer, L; Lockard, K L

    2000-05-01

    Presentation of a case study involving a female patient, in her 20s, undergoing routine surgery for removal of atrial myxoma leading to a heart transplant. This case study will show the progression from postcardiotomy failure, the emergent use of the extracorporeal membrane oxygenator device, the insertion of the HeartMate device, and the final return to the operating room for a heart transplant. The case study will examine the physiologic demands on the patient, as well as the psychological effects from the various life-saving devices.

  14. HYDROGEOLOGIC CASE STUDIES (DENVER PRESENTATION)

    EPA Science Inventory

    Hydrogeology is the foundation of subsurface site characterization for evaluations of monitored natural attenuation (MNA). Three case studies are presented. Examples of the potentially detrimental effects of drilling additives on ground-water samples from monitoring wells are d...

  15. Hydrogeologic Case Studies (Seattle, WA)

    EPA Science Inventory

    Hydrogeology is the foundation of subsurface site characterization for evaluations of monitored natural attenuation (MNA). Three case studies are presented. Examples of the potentially detrimental effects of drilling additives on ground-water samples from monitoring wells are d...

  16. HYDROGEOLOGIC CASE STUDIES (CHICAGO, IL)

    EPA Science Inventory

    Hydrogeology is the foundation of subsurface site characterization for evaluations of monitored natural attenuation (MNA). Three case studies are presented. Examples of the potentially detrimental effects of drilling additives on ground-water samples from monitoring wells are d...

  17. Case studies of uncommon headaches.

    PubMed

    Evans, Randolph W

    2006-05-01

    The following interesting and uncommon headache disorders are presented through case studies: exploding head syndrome, hypnic headache, neck-tongue syndrome, "Alice in Wonderland" syndrome, nummular headache, red ear syndrome, burning mouth syndrome, spontaneous intracranial hypotension syndrome, and cardiac cephalalgia.

  18. Teaching astronomy with case studies

    NASA Astrophysics Data System (ADS)

    Slater, Timothy F.

    2015-11-01

    Breaking the students into small, collaborative learning groups to solve a meaningful task together is one of the most successful and fully evaluated teaching techniques implemented over the last century. Although there are many ways to accomplish small group learning, a long-standing and consistently successful collaborative class activity is to use the case study teaching strategy. The use of case studies is common in medical schools and law schools, but not so common in the teaching of astronomy. Case studies create meaningful conversations among students and with the professor by focusing on life-like dilemmas to be solved. Case study tasks ask audience members to synthesize several ideas or evaluate scenarios that have not been explicitly presented to them in the lecture or in available readings.

  19. Nasopharyngeal Case-Control Study

    Cancer.gov

    A case-control study conducted in Taiwan between 1991-1994 among approximately 1,000 individuals to examine the role of viral, environmental, and genetic factors associated with the development of nasopharyngeal carcinoma

  20. Case Study: del Amo Bioventing

    EPA Science Inventory

    The attached presentation discusses the fundamentals of bioventing in the vadose zone. The basics of bioventing are presented. The experience to date with the del Amo Superfund Site is presented as a case study.

  1. Case Study: del Amo Bioventing

    EPA Science Inventory

    The attached presentation discusses the fundamentals of bioventing in the vadose zone. The basics of bioventing are presented. The experience to date with the del Amo Superfund Site is presented as a case study.

  2. HYDROGEOLOGIC CASE STUDIES (CHICAGO, IL)

    EPA Science Inventory

    Hydrogeology is the foundation of subsurface site characterization for evaluations of monitored natural attenuation (MNA). Three case studies are presented. Examples of the potentially detrimental effects of drilling additives on ground-water samples from monitoring wells are d...

  3. HYDROGEOLOGIC CASE STUDIES (DENVER PRESENTATION)

    EPA Science Inventory

    Hydrogeology is the foundation of subsurface site characterization for evaluations of monitored natural attenuation (MNA). Three case studies are presented. Examples of the potentially detrimental effects of drilling additives on ground-water samples from monitoring wells are d...

  4. Hydrogeologic Case Studies (Seattle, WA)

    EPA Science Inventory

    Hydrogeology is the foundation of subsurface site characterization for evaluations of monitored natural attenuation (MNA). Three case studies are presented. Examples of the potentially detrimental effects of drilling additives on ground-water samples from monitoring wells are d...

  5. Case studies in working memory: a case for single cases?

    PubMed

    Della Sala, S; Logie, R H; Marchetti, C; Wynn, V

    1991-06-01

    Patterns of cognitive deficit in single neuropsychological cases are common sources of evidence for theories of normal cognition. In particular, the working memory model has benefited from data obtained from a number of contrasting patients, in some cases resulting in modifications of the working memory model. In this paper, patterns of data from short-term memory patients and anarthric patients are compared with patterns of data from normal subjects. The patterns of patient data that were unlike those patterns typically found for groups of normal subjects, could be incorporated within a modified version of the articulatory loop component of the working memory model. However a small number of individual normal subjects also did not show the pattern that is reported on the basis of average performance of groups of normal subjects. This causes some difficulty in interpreting those data from such 'aberrant normal' patterns, and those data from single patients with functional cognitive deficits. The implications of these findings for the interpretation of neuropsychological data are discussed in the context of the working memory model, but with the intention of making a general point pertaining to the development of functional models of cognition. It is argued that single case studies should continue to provide a useful source of evidence, providing that care is exercised in considering the implications of such data for models of normal cognition.

  6. Beneficial effects on water management of simple hydraulic structures in wetland systems: the Vallevecchia case study, Italy.

    PubMed

    Carrer, G M; Bonato, M; Smania, D; Barausse, A; Comis, C; Palmeri, L

    2011-01-01

    Conflicting water uses in coastal zones demand integrated approaches to achieve sustainable water resources management, protecting water quality while allowing those human activities which rely upon aquatic ecosystem services to thrive. This case study shows that the creation and simple management of hydraulic structures within constructed wetlands can markedly reduce the non-point pollution from agriculture and, simultaneously, benefit agricultural activities, particularly during hot and dry periods. The Vallevecchia wetland system is based on a reclaimed 900 ha-large drainage basin in Northern Italy, where droughts recently impacted agriculture causing water scarcity and saltwater intrusion. Rainwater and drained water are recirculated inside the system to limit saltwater intrusion, provide irrigation water during dry periods and reduce the agricultural nutrient loads discharged into the bordering, eutrophic Adriatic Sea. Monitoring (2003-2009) of water quality and flows highlights that the construction (ended in 2005) of a gated spillway to control the outflow, and of a 200,000 m3 basin for water storage, dramatically increased the removal of nutrients within the system. Strikingly, this improvement was achieved with a minimal management effort, e.g., each year the storage basin was filled once: a simple management of the hydraulic structures would greatly enhance the system efficiency, and store more water to irrigate and limit saltwater intrusion.

  7. Teaching Case: Enterprise Architecture Specification Case Study

    ERIC Educational Resources Information Center

    Steenkamp, Annette Lerine; Alawdah, Amal; Almasri, Osama; Gai, Keke; Khattab, Nidal; Swaby, Carval; Abaas, Ramy

    2013-01-01

    A graduate course in enterprise architecture had a team project component in which a real-world business case, provided by an industry sponsor, formed the basis of the project charter and the architecture statement of work. The paper aims to share the team project experience on developing the architecture specifications based on the business case…

  8. Teaching Case: Enterprise Architecture Specification Case Study

    ERIC Educational Resources Information Center

    Steenkamp, Annette Lerine; Alawdah, Amal; Almasri, Osama; Gai, Keke; Khattab, Nidal; Swaby, Carval; Abaas, Ramy

    2013-01-01

    A graduate course in enterprise architecture had a team project component in which a real-world business case, provided by an industry sponsor, formed the basis of the project charter and the architecture statement of work. The paper aims to share the team project experience on developing the architecture specifications based on the business case…

  9. Case Study: Planning as Learning

    ERIC Educational Resources Information Center

    Smith, Peter A. C.

    2007-01-01

    Proposes that the objectives of strategic planning may be attained more effectively if implemented via a learning paradigm. In support of this claim, describes a case study detailing implementation of such an initiative plus post-implementation interviews. (Contains 5 figures.)

  10. Case Studies in Applied Mathematics.

    ERIC Educational Resources Information Center

    Mathematical Association of America, Washington, DC.

    This collection of nine case studies in applied mathematics was written primarily for the use of the instructor by a Conference sponsored by the Committee on the Undergraduate Program in Mathematics (CUPM). Each chapter contains exercises of varying degrees of difficulty and several include student projects. The materials were used on a trial…

  11. Due Process Hearing Case Study

    ERIC Educational Resources Information Center

    Bateman, David F.; Jones, Marni Gail

    2010-01-01

    This article presents a due process hearing case study of a mother who contended that his son, D.J., has been denied of a free and appropriate public education (FAPE) of his School District after being suspended from school. D.J., an elementary student, had been described as hyperactive, inattentive, defiant, and often volatile. He was identified…

  12. The Language Dilemma: Case Study.

    ERIC Educational Resources Information Center

    Teboul, J. C. Bruno

    2002-01-01

    Presents the case study involving a fictitious company's English-only policy and threats of legal action based on that policy. Includes the following responses: "Legal Issues Posed in the Language Dilemma" (Gregory S. Walden); "English Only: A Workplace Dilemma" (Alan Pakiela); "Problems with English-Only Policies" (Barbara Lynn Speicher); and…

  13. The Case Study of Frank

    ERIC Educational Resources Information Center

    Eynde, Peter Op't; Hannula, Markku S.

    2006-01-01

    As a unifying feature of this Special Issue, we have asked proponents of each framework to analyse an empirical classroom account of one student's process of solving a mathematical problem. Here, for the case study of "Frank", we give the main data that were available to all authors.

  14. Case Studies in Sports Nutrition.

    ERIC Educational Resources Information Center

    Clark, Nancy

    1988-01-01

    This article presents case studies of two athletes who wanted to affect a change in their body weight in order to enhance athletic performance. Each athlete's problem and the nutrition approach used to solve it are discussed. Caloric values of fast foods are listed. (JL)

  15. Case Studies in Sports Nutrition.

    ERIC Educational Resources Information Center

    Clark, Nancy

    1988-01-01

    This article presents case studies of two athletes who wanted to affect a change in their body weight in order to enhance athletic performance. Each athlete's problem and the nutrition approach used to solve it are discussed. Caloric values of fast foods are listed. (JL)

  16. Case Studies in Broadcast Management.

    ERIC Educational Resources Information Center

    Coleman, Howard W.

    This collection of case studies, based on factual situations which have challenged broadcast managers in recent years, is designed to stimulate thinking about and solving of "real world" problems in commercial radio and television operations. Topics of a serious, long-run nature include enlarging the radio audience; station revenue and economy;…

  17. Principal Succession: A Case Study.

    ERIC Educational Resources Information Center

    Jones, Jeffery C.; Webber, Charles F.

    Principal succession is misunderstood and underutilized as a means of affecting dynamic renewal in school communities. Previously, the replacement of a principal was examined solely through the experiences of principals and teachers. This paper reports on a case study that added the previously neglected perspectives of students, support staff, and…

  18. Case Studies in College Strategy.

    ERIC Educational Resources Information Center

    Chaffee, Ellen Earle; And Others

    Strategies employed by selected, pseudonymous private colleges in dealing with revenue constraints are detailed in case studies. Attention is directed to the adaptation and policies of eleven private liberal arts and three comprehensive colleges in their efforts to recover from rapid decline in total revenues during 1973-1976. Intensive analysis…

  19. Due Process Hearing Case Study

    ERIC Educational Resources Information Center

    Bateman, David F.; Jones, Marni Gail

    2010-01-01

    This article presents a due process hearing case study of a mother who contended that his son, D.J., has been denied of a free and appropriate public education (FAPE) of his School District after being suspended from school. D.J., an elementary student, had been described as hyperactive, inattentive, defiant, and often volatile. He was identified…

  20. The Language Dilemma: Case Study.

    ERIC Educational Resources Information Center

    Teboul, J. C. Bruno

    2002-01-01

    Presents the case study involving a fictitious company's English-only policy and threats of legal action based on that policy. Includes the following responses: "Legal Issues Posed in the Language Dilemma" (Gregory S. Walden); "English Only: A Workplace Dilemma" (Alan Pakiela); "Problems with English-Only Policies" (Barbara Lynn Speicher); and…

  1. Development of smoothed particle hydrodynamics method for analysis of high-speed two-phase flows in hydropower spillways

    NASA Astrophysics Data System (ADS)

    Nakayama, Akihiko; Leong, Lap Yan; Kong, Wei Song

    2017-04-01

    The basic formulation of the smoothed particle hydrodynamics (SPH) has been re-examined for analysis of gas-liquid two-phase flows with large density differences. The improved method has been verified in the calculation of dam-break flow and has been applied to an open-channel flow over steep sloped stepped spillway. In the calculation of the flow over the steps, not only is the trapped air but entrained air bubbles and water droplets are reproduced well. The detailed variation of the time-averaged mean quantities will have to be further examined but overall prediction with relatively small number of particles is done well.

  2. Remaining Sites Verification Package for the 116-F-8, 1904-F Outfall Structure and the 100-F-42, 1904-F Spillway, Waste Site Reclassification Form 2006-045

    SciTech Connect

    L. M. Dittmer

    2006-09-26

    The 100-F-42 waste site is the portion of the former emergency overflow spillway for the 1904-F Outfall Structure formerly existing above the ordinary high water mark of the Columbia River. The spillway consisted of a concrete flume designed to discharge effluent from the 107-F Retention Basin in the event that flows could not be completely discharged via the river outfall pipelines. The results of verification sampling show that residual contaminant concentrations do not preclude any future uses and allow for unrestricted use of shallow zone soils. The results also demonstrate that residual contaminant concentrations are protective of groundwater and the Columbia River.

  3. Remaining Sites Verification Package for the 116-F-16, PNL Outfall and the 100-F-43, PNL Outfall Spillway, Waste Site Reclassification Form 2006-046

    SciTech Connect

    L. M. Dittmer

    2006-09-14

    The 100-F-43 waste site is the portion of the former discharge spillway for the PNL Outfall formerly existing above the ordinary high water mark of the Columbia River. The spillway consisted of a concrete flume used to discharge waste effluents from the 100-F Experimental Animal Farm. The results of verification sampling show that residual contaminant concentrations do not preclude any future uses and allow for unrestricted use of shallow zone soils. The results also demonstrate that residual contaminant concentrations are protective of groundwater and the Columbia River.

  4. Surprise: The Korean Case Study

    DTIC Science & Technology

    1992-05-18

    theory through education ; a mre rigid approach toward decision making in foriegn policy; appropriate military doctrine; mobile and flexible forces. 20...TJUR 19 ARSTRAC7 (Contrwe on ,vvere of necesury end iderltIfy by block fnumber) Clearly m.ilitary surorise is arnng the greatest dangers a country ...SURPRISE: THE KOREAN CASE STUDY Clearly military surprise is among the greatest dangers a country can face. Despite a knowledge of this danger, responsible

  5. Case Study: Guidelines for Producing Videos to Accompany Flipped Cases

    ERIC Educational Resources Information Center

    Prud'homme-Généreux, Annie; Schiller, Nancy A.; Wild, John H.; Herreid, Clyde Freeman

    2017-01-01

    Three years ago, the "National Center for Case Study Teaching in Science" (NCCSTS) was inspired to merge the case study and flipped classroom approaches. The resulting project aimed to create the materials required to teach a flipped course in introductory biology by assigning videos as homework and case studies in the classroom. Three…

  6. Case Study Research in Therapeutic Recreation.

    ERIC Educational Resources Information Center

    McCormick, Bryan P.

    2000-01-01

    Reviews the rationale for and implications of case study research in therapeutic recreation, examining: what can be learned from studying a single case; issues of validity and reliability; ethical conduct of research; and the practice of case study research (case protocol, case selection, collecting data, analyzing and interpreting data, and…

  7. Spillway-induced salmon head injury triggers the generation of brain alphaII-spectrin breakdown product biomarkers similar to mammalian traumatic brain injury.

    PubMed

    Miracle, Ann; Denslow, Nancy D; Kroll, Kevin J; Liu, Ming Cheng; Wang, Kevin K W

    2009-01-01

    Recent advances in biomedical research have resulted in the development of specific biomarkers for diagnostic testing of disease condition or physiological risk. Of specific interest are alphaII-spectrin breakdown products (SBDPs), which are produced by proteolytic events in traumatic brain injury and have been used as biomarkers to predict the severity of injury in humans and other mammalian brain injury models. This study describes and demonstrates the successful use of antibody-based mammalian SBDP biomarkers to detect head injury in migrating juvenile Chinook salmon (Oncorhynchus tshawytscha) that have been injured during passage through high-energy hydraulic environments present in spillways under different operational configurations. Mortality and injury assessment techniques currently measure only near-term direct mortality and easily observable acute injury. Injury-based biomarkers may serve as a quantitative indicator of subacute physical injury and recovery, and aid hydropower operators in evaluation of safest passage configuration and operation actions for migrating juvenile salmonids. We describe a novel application of SBDP biomarkers for head injury for migrating salmon. To our knowledge, this is the first documented cross-over use of a human molecular biomarker in a wildlife and operational risk management scenario.

  8. Spillway-Induced Salmon Head Injury Triggers the Generation of Brain αII-Spectrin Breakdown Product Biomarkers Similar to Mammalian Traumatic Brain Injury

    PubMed Central

    Miracle, Ann; Denslow, Nancy D.; Kroll, Kevin J.; Liu, Ming Cheng; Wang, Kevin K. W.

    2009-01-01

    Recent advances in biomedical research have resulted in the development of specific biomarkers for diagnostic testing of disease condition or physiological risk. Of specific interest are αII-spectrin breakdown products (SBDPs), which are produced by proteolytic events in traumatic brain injury and have been used as biomarkers to predict the severity of injury in humans and other mammalian brain injury models. This study describes and demonstrates the successful use of antibody-based mammalian SBDP biomarkers to detect head injury in migrating juvenile Chinook salmon (Oncorhynchus tshawytscha) that have been injured during passage through high-energy hydraulic environments present in spillways under different operational configurations. Mortality and injury assessment techniques currently measure only near-term direct mortality and easily observable acute injury. Injury-based biomarkers may serve as a quantitative indicator of subacute physical injury and recovery, and aid hydropower operators in evaluation of safest passage configuration and operation actions for migrating juvenile salmonids. We describe a novel application of SBDP biomarkers for head injury for migrating salmon. To our knowledge, this is the first documented cross-over use of a human molecular biomarker in a wildlife and operational risk management scenario. PMID:19214235

  9. Genesee River Basin Study. Volume 1. Main Report.

    DTIC Science & Technology

    1988-06-01

    ALTERNATIVE STUDIED IN THE FEASIBILITY PHASE 4.14 Addition of Gates to the Mt. Morris Dan Spillway 4-20 4.15 Designation of NED Plan 4-21 SECTION 5...Capacity of 54,000 Acre-Foot 4-16 4.2 Plan View of Dan at Stannard 4-16 4.3 The Addition of Tainter Gates to the Top of the Spillway 4-24 vi GENESEE RIVER...addition of gates on top of the spillway section of the existing Mt. Morris dam and reservoir for greater security against flood hazards. The feasibility

  10. The Case: Generalisation, Theory and Phronesis in Case Study

    ERIC Educational Resources Information Center

    Thomas, Gary

    2011-01-01

    Arguments for the value of case study are vitiated by assumptions about the need for generalisation in the warrant of social scientific inquiry--and little generalisation is legitimate from case study, although an argument exists for the role of the case in the establishment of a form of generalisation in a certain kind of theory, a line of…

  11. A multi-year analysis of spillway survival for juvenile salmonids as a function of spill bay operations at McNary Dam, Washington and Oregon, 2004-09

    USGS Publications Warehouse

    Adams, Noah S.; Hansel, Hal C.; Perry, Russell W.; Evans, Scott D.

    2012-01-01

    We analyzed 6 years (2004-09) of passage and survival data collected at McNary Dam to examine how spill bay operations affect survival of juvenile salmonids passing through the spillway at McNary Dam. We also examined the relations between spill bay operations and survival through the juvenile fish bypass in an attempt to determine if survival through the bypass is influenced by spill bay operations. We used a Cormack-Jolly-Seber release-recapture model (CJS model) to determine how the survival of juvenile salmonids passing through McNary Dam relates to spill bay operations. Results of these analyses, while not designed to yield predictive models, can be used to help develop dam-operation strategies that optimize juvenile salmonid survival. For example, increasing total discharge typically had a positive effect on both spillway and bypass survival for all species except sockeye salmon (Oncorhynchus nerka). Likewise, an increase in spill bay discharge improved spillway survival for yearling Chinook salmon (Oncorhynchus tshawytscha), and an increase in spillway discharge positively affected spillway survival for juvenile steelhead (Oncorhynchus mykiss). The strong linear relation between increased spill and increased survival indicates that increasing the amount of water through the spillway is one strategy that could be used to improve spillway survival for yearling Chinook salmon and juvenile steelhead. However, increased spill did not improve spillway survival for subyearling Chinook salmon and sockeye salmon. Our results indicate that a uniform spill pattern would provide the highest spillway survival and bypass survival for subyearling Chinook salmon. Conversely, a predominantly south spill pattern provided the highest spillway survival for yearling Chinook salmon and juvenile steelhead. Although spill pattern was not a factor for spillway survival of sockeye salmon, spill bay operations that optimize passage through the north and south spill bays maximized

  12. A Molecular Epidemiologic Case-Case Study of Prostate Cancer

    DTIC Science & Technology

    2001-03-01

    AD__ _ _ _ Award Number: DAMD17-98-1-8471 TITLE: A Molecular Epidemiologic Case-Case Study of Prostate Cancer PRINCIPAL INVESTIGATOR: Sara S. Strom...Molecular Epidmeiologic Case-Case Study of Prostate DAMD17-98-1-8471 Cancer Susceptibility 6. AUTHOR(S) Sara S. Strom, Ph.D. Sue-Hwa Lin 7. PERFORMING...DISTRIBUTION CODE Approved for Public Release; Distribution Unlimited 13. ABSTRACT (Maximum 200 Words) Although prostate cancer is the most common cancer in

  13. Physiologic amputation: a case study.

    PubMed

    Long, Jeri; Hall, Virginia

    2014-03-01

    Acute limb ischemia is a complication of severe peripheral arterial disease that can be a threatening limb as well as life. Multiple procedures exist today to help revascularize extremities; however, even with the latest technologies, surgical amputation of the limb may still be necessary. Cryoamputation, or physiologic amputation, is a method used to treat patients who are hemodynamically unstable for the operating room and who are in need of urgent amputation owing to arterial ischemia. This procedure is used in the rare instance where not only a persons' limb is threatened, but also their life. This is a case study regarding one patient who presented to the hospital with limb-threatening ischemia who became hemodynamically unstable owing to the rhabdomyolysis associated with the ischemia of his lower extremity. Cryoamputation was used to stabilize the patient and prevent further deterioration, so that he could safely undergo surgical amputation of the limb without an increase in mortality risk. Cryoamputation must be followed by formal surgical amputation when the patient is hemodynamically stabilized. It is not a limb salvaging, procedure but it is a life-saving procedure. This case study demonstrates the usefulness of the procedure and discusses the technique used for cryoamputation.

  14. Numerical modeling of sediment transport and its effect on algal biomass distribution in Lake Pontchartrain due to flood release from Bonnet Carré Spillway

    USDA-ARS?s Scientific Manuscript database

    In order to protect the city of New Orleans from the Mississippi River flooding, the Bonnet Carré Spillway (BCS) was constructed from 1929 to 1936 to divert flood water from the river into Lake Pontchartrain and then into the Gulf of Mexico. During the BCS opening for flood release, large amount of ...

  15. Obsessional slowness: a case study.

    PubMed

    Lam, Wendy; Wong, Karen W; Fulks, Mary-Ann; Holsti, Liisa

    2008-10-01

    Obsessional slowness is a rare psychiatric disorder with few treatment options and limited research to date. Some suggest that targeted behavioural interventions may reduce the time taken for functional daily activities. To examine whether a behavioural intervention would reduce the amount of time taken for an adolescent with obsessional slowness to walk to class. A single-subject A-B-A withdrawal design was incorporated into this case study. The treatment involved one-to-one pacing and prompting during the subject's walk to gym class. Walking times to gym class were measured during a baseline phase, during a one-month treatment phase, and during a post-treatment follow-up phase. The subject's walking times decreased during the treatment phase. Post-treatment walking times suggested a carry-over effect. This study adds to the sparse evidence on treatments for obsessional slowness and suggests occupation-based treatment options.

  16. Case Study: A Picture Worth a Thousand Words? Making a Case for Video Case Studies

    ERIC Educational Resources Information Center

    Pai, Aditi

    2014-01-01

    A picture, they say, is worth a thousand words. If a mere picture is worth a thousand words, how much more are "moving pictures" or videos worth? The author poses this not merely as a rhetorical question, but because she wishes to make a case for using videos in the traditional case study method. She recommends four main approaches of…

  17. Case Study: A Picture Worth a Thousand Words? Making a Case for Video Case Studies

    ERIC Educational Resources Information Center

    Pai, Aditi

    2014-01-01

    A picture, they say, is worth a thousand words. If a mere picture is worth a thousand words, how much more are "moving pictures" or videos worth? The author poses this not merely as a rhetorical question, but because she wishes to make a case for using videos in the traditional case study method. She recommends four main approaches of…

  18. STS Case Study Development Support

    NASA Technical Reports Server (NTRS)

    Rosa de Jesus, Dan A.; Johnson, Grace K.

    2013-01-01

    The Shuttle Case Study Collection (SCSC) has been developed using lessons learned documented by NASA engineers, analysts, and contractors. The SCSC provides educators with a new tool to teach real-world engineering processes with the goal of providing unique educational materials that enhance critical thinking, decision-making and problem-solving skills. During this third phase of the project, responsibilities included: the revision of the Hyper Text Markup Language (HTML) source code to ensure all pages follow World Wide Web Consortium (W3C) standards, and the addition and edition of website content, including text, documents, and images. Basic HTML knowledge was required, as was basic knowledge of photo editing software, and training to learn how to use NASA's Content Management System for website design. The outcome of this project was its release to the public.

  19. Generalization of Findings From Single Case Studies.

    ERIC Educational Resources Information Center

    Kennedy, Mary M.

    Although single case studies might be useful to evaluators for a variety of purposes, there are no generally accepted ways for drawing inferences about the generality of findings from a case study. Single case studies are defined in this paper as either studies of single events, or disaggregated studies of multiple events. The data may be…

  20. Value of case studies in disaster assessment?

    PubMed

    Grynszpan, Delphine; Murray, Virginia; Llosa, Silvia

    2011-06-01

    Case studies can be useful in assessing and learning lessons from emergency situations. In this paper, different uses for disaster case studies, are explored with identification of potential pitfalls that should be avoided. In addition, ways to improve the rigor and significance of case studies are suggested. Case studies can be used as examples or as a research tool. If conducted properly, they can provide robust and compelling results. It is argued that sharing a common guide to conducting and writing case studies among all disaster risk reduction professionals could improve the quality of case study reports and thereby strengthen their value in advancing the prevention, preparedness, and management of disasters and emergencies.

  1. HEAD INJURY ASSESSMENT IN JUVENILE CHINOOK USING THE ALPHA II-SPECTRIN BIOMARKER: EFFECTS OF PRESSURE CHANGES AND PASSAGE THROUGH A REMOVABLE SPILLWAY WEIR

    SciTech Connect

    Jonason, C.; Miracle, A.

    2009-01-01

    The cytoskeletal protein alpha II-spectrin has specifi c neurodegenerative mechanisms that allow the necrotic (injury-induced) and apoptotic (non-injury-induced) pathways of proteolysis to be differentiated in an immunoblot. Consequently, αII-spectrin breakdown products (SBDPs) are potential biomarkers for diagnosing traumatic brain injury (TBI). The purpose of the following investigation, consisting of two studies, was to evaluate the utility of the spectrin biomarker in diagnosing TBI in fi sh that travel through hydroelectric dams in the Columbia and Snake Rivers. The fi rst study used hyperbaric pressure chambers to simulate the pressure changes that affect fi sh during passage through a Federal Columbia River Power System (FCRPS) Kaplan turbine. The second study tested the effect of a removable spillway weir (RSW) on the passage of juvenile chinook (Oncorhynchus tshawytscha). This study was conducted in tandem with a balloon-tag study by the U.S. Army Corps of Engineers. Brain samples from fi sh were collected and analyzed using an immunoblot for SBDPs, and imaging software was used to quantify the protein band density and determine the ratio of cleaved protein to total protein. The biomarker analyses found higher SBDP expression levels in fi sh that were exposed to lower pressure nadirs and fi sh that passed through the RSW at a deep orientation. In general, the incidence of injuries observed after treatment positively correlated with expression levels, suggesting that the biomarker method of analysis is comparable to traditional methods of injury assessment. It was also found that, for some treatments, the 110 kDa spectrin fragment (SBDP 110) correlated more strongly with necrotic head injury incidence and mortality rates than did the total cleaved protein or the 120 kDa fragment. These studies will be informative in future decisions regarding the design of turbines and fi sh passage structures in hydroelectric dams and will hopefully contribute to the

  2. NWCC Transmission Case Study III

    SciTech Connect

    Terry Allison, Steve Wiese

    2000-03-01

    OAK-B135 Transmission System Improvements for Wind Energy Development in the Upper Midwest and Great Plains: Opportunities and Obstacles. This case study set out to ascertain the validity of three assumptions from the perspectives of stakeholders involved in wind energy and transmission issues in the Upper Midwest and Great Plains. The assumptions, and the stakeholders' reactions to each, are summarized below: Assumption 1--Transmission system improvements would provide significant benefits to the electricity network and its customers. Respondents acknowledge the potential for overall system benefits in the form of reduced line losses, improved grid stability and reliability, and enhanced ability to conduct spot market transactions. They also agree that these benefits relate to specific regional needs. However, there is disagreement over the extent of other benefits such as efficiency gains and cost savings from reduced line losses. Further, environmental and community interest groups point out that none of these benefits are realized without significant financial, environmental and social costs. Assumption 2--The benefits of transmission improvements would be helpful, but not confined, to wind power. All respondents agree that wind energy could benefit from transmission system improvements. But they also acknowledge, reluctantly, in the case of environmental stakeholders, that the benefits of an improved transmission system cannot be limited to environmentally preferable forms of generation. Some environmental and community advocate respondents also feel that transmission system improvement projects can be avoided altogether through energy conservation and efficiency measures, and by substituting wind energy for fossil generation. Assumption 3--Transmission alliances among stakeholders within and external to the wind community can provide benefits in the public interest. The fractured, multi-jurisdictional governance of the regional transmission system, and the

  3. Model Study of Harry S. Truman Spillway, Osage River, Missouri; Hydraulic Model Investigation.

    DTIC Science & Technology

    1979-11-01

    area, 5-ft rooster tail--flow rides 10,000 30 Flow rides surface 10,000 33 Flow rides surface 10,000 41 +7-ft rooster tail--flow rides 10,000 37 Flow...turbulence reaches the bottom, +6-ft rooster tail 10,000 681.4 24 Flow rides some then appears to plunge upstream of baffle blocks--lots of bubbles on

  4. Land Use Land Cover Impact on Probable Maximum Flood and Sedimentation for Artificial Reservoirs: A Case Study in Western US

    NASA Astrophysics Data System (ADS)

    Yigzaw, W. Y.; Hossain, F.

    2014-12-01

    Unanticipated peak inflows that can exceed the inflow design flood (IDF) for spillways and result in possible storage loss in reservoirs from increased sedimentation rates lead to a greater risk for downstream floods. Probable maximum precipitation (PMP) and probable maximum flood (PMF) are mostly used to determine IDF. Any possible change of PMP and PMF due to future land use and land cover (LULC) change therefore requires a methodical investigation. However, the consequential sediment yield, due to altered precipitation and flow patterns into the reservoir has not been addressed in literature. Thus, this study answers the following question: "What is the combined impact of a modified PMP on PMF and sediment yield for an artificial reservoir? The Owyhee dam of Owyhee River watershed (ORW) in Oregon is selected as a case study area for understanding the impact of LULC change on PMF and sedimentation rates. Variable Infiltration Capacity (VIC) is used for simulating stream flow (PMF) and the Revised Universal Soil Loss Equation (RUSLE) to estimate sediment yield over ORW as a result of change in precipitation intensity and LULC. Scenarios that represent pre-Owyhee dam (Pre-Dam) and post Owyhee dam (Non-Irrigation, Control, 1992, 2001, 2006) are used to simulate PMF's and consequential sediment yield. Peak PMF result for Pre-Dam scenarios is found to increase by 26m3s-1 (1%) and 81m3s-1 (3%) from Non-Irrigation and Control scenario, respectively. Considering only LULC change, sediment yield decreased over ORW due to the transformation of LULC from grassland to shrubland (from Pre-Dam period to the post-Dam years). However, increase in precipitation intensity caused a significant (0.1% storage loss over 21days storm period) increase in sediment yield resulting in largely reservoir sedimentation. This study underscores the need to consider future impact of LULC change on IDF calculation as well as sedimentation rates for more robust reservoir operations and planning.

  5. Allographic agraphia: A case study

    PubMed Central

    Menichelli, Alina; Rapp, Brenda; Semenza, Carlo

    2011-01-01

    We report the case of patient MN, diagnosed with frontotemporal dementia, who exhibited a severe impairment in writing letters and words in upper-case print in the face of accurate production of the same stimuli in lower-case cursive. In contrast to her written production difficulties, MN was unimpaired in recognizing visually presented letters and words in upper-case print. We find a modest benefit of visual form cueing in the written production of upper-case letters, despite an inability to describe or report visual features of letters in any case or font. This case increases our understanding of the allographic level of letter-shape representation in written language production. It provides strong support for previous reports indicating the neural independence of different types of case and font-specific letter-shape information; it provides evidence that letter-shape production does not require explicit access to information about the visual attributes of letter shapes and, finally, it reveals the possibility of interaction between processes involved in letter-shape production and perception. PMID:18489965

  6. Case-control studies: basic concepts.

    PubMed

    Vandenbroucke, Jan P; Pearce, Neil

    2012-10-01

    The purpose of this article is to present in elementary mathematical and statistical terms a simple way to quickly and effectively teach and understand case-control studies, as they are commonly done in dynamic populations-without using the rare disease assumption. Our focus is on case-control studies of disease incidence ('incident case-control studies'); we will not consider the situation of case-control studies of prevalent disease, which are published much less frequently.

  7. Real-Life Case Studies for Teachers.

    ERIC Educational Resources Information Center

    Hayes, William

    Case studies described in this book reflect conditions present in today's public schools. Situations described in these case studies are intended to introduce education students to the variety of problems existing in today's schools. The 38 case studies highlight: student cheating; teacher's observation by administrator; inclusion; contract…

  8. Case Study Evaluations: A Decade of Progress?

    ERIC Educational Resources Information Center

    Yin, Robert K.

    1997-01-01

    In the last 10 years, there has been increased use of case study methodology, with accompanying refinement and improvement of the methods. Case studies have become legitimate research methods in evaluation, but it is too soon to say whether improvements in methodology are really resulting in improvements in the case studies conducted. (SLD)

  9. Case Study: The Chemistry of Cocaine

    ERIC Educational Resources Information Center

    Dewprashad, Brahmadeo

    2011-01-01

    This column provides original articles on innovations in case study teaching, assessment of the method, as well as case studies with teaching notes. This month's case study focuses on the chemistry of cocaine to teach a number of core concepts in organic chemistry. It also requires that students read and analyze an original research paper on…

  10. Case Study: The Chemistry of Cocaine

    ERIC Educational Resources Information Center

    Dewprashad, Brahmadeo

    2011-01-01

    This column provides original articles on innovations in case study teaching, assessment of the method, as well as case studies with teaching notes. This month's case study focuses on the chemistry of cocaine to teach a number of core concepts in organic chemistry. It also requires that students read and analyze an original research paper on…

  11. Case Study Evaluations: A Decade of Progress?

    ERIC Educational Resources Information Center

    Yin, Robert K.

    1997-01-01

    In the last 10 years, there has been increased use of case study methodology, with accompanying refinement and improvement of the methods. Case studies have become legitimate research methods in evaluation, but it is too soon to say whether improvements in methodology are really resulting in improvements in the case studies conducted. (SLD)

  12. Business and Consumer Education Case Studies.

    ERIC Educational Resources Information Center

    Delta Pi Epsilon, Minneapolis, Minn. Phi Chapter.

    This publication contains 58 case studies for classroom use in teaching various business and consumer education subjects at the high school level. A supplement to a previous Phi Chapter publication, "Office Education Case Studies" (1973), the case studies are intended to create class discussions and help students acquire the ability to analyze…

  13. Levodopa addiction. A case study.

    PubMed

    Tack, E; De Cuypere, G; Jannes, C; Remouchamps, A

    1988-09-01

    A case is presented of a young woman with a serious addiction to levodopa who over the years developed an extrapyramidal syndrome and chronic paranoid psychotic behaviour. The possible pathophysiological mechanism is discussed.

  14. Demystifying Instructional Innovation: The Case of Teaching with Case Studies

    ERIC Educational Resources Information Center

    Kantar, Lina D.

    2013-01-01

    Issues emerging from instructional innovation are inevitable, yet basing any curriculum shift on a theoretical framework is paramount. This paper grounds the case-based pedagogy in three learning theories: behaviorism, cognitivism, and constructivism. The three theories are described and situated in relation to the case study method. An…

  15. Reusable experiment controllers, case studies

    NASA Astrophysics Data System (ADS)

    Buckley, Brian A.; Gaasbeck, Jim Van

    1996-03-01

    Congress has given NASA and the science community a reality check. The tight and ever shrinking budgets are trimming the fat from many space science programs. No longer can a Principal Investigator (PI) afford to waste development dollars on re-inventing spacecraft controllers, experiment/payload controllers, ground control systems, or test sets. Inheritance of the Ground Support Equipment (GSE) from one program to another is not a significant re-use of technology to develop a science mission in these times. Reduction of operational staff and highly autonomous experiments are needed to reduce the sustaining cost of a mission. The re-use of an infrastructure from one program to another is needed to truly attain the cost and time savings required. Interface and Control Systems, Inc. (ICS) has a long history of re-usable software. Navy, Air Force, and NASA programs have benefited from the re-use of a common control system from program to program. Several standardization efforts in the AIAA have adopted the Spacecraft Command Language (SCL) architecture as a point solution to satisfy requirements for re-use and autonomy. The Environmental Research Institute of Michigan (ERIM) has been a long-standing customer of ICS and are working on their 4th generation system using SCL. Much of the hardware and software infrastructure has been re-used from mission to mission with little cost for re-hosting a new experiment. The same software infrastructure has successfully been used on Clementine, and an end-to-end system is being deployed for the Far Ultraviolet Spectroscopic Explorer (FUSE) for Johns Hopkins University. A case study of the ERIM programs, Clementine and FUSE will be detailed in this paper.

  16. Middle Devonian depositional environments for Rapid Member (Cedar Valley Group) interpreted from exposures at the Coralville spillway and elsewhere in eastern Iowa

    SciTech Connect

    Witzke, B.J.; Bunker, B.J. . Geological Survey Bureau)

    1994-04-01

    Ongoing studies of the Cedar Valley Group were fortuitously aided by the exhumation of Rapid Mbr (Little Cedar Fm) carbonate strata below the coralville spillway, Johnson Co., Iowa, during the summer floods of 1993. Extensive bedding-plane exposures provided an exceptional opportunity to document fine-scale lateral biotic and lithologic variations within the member, and to compare these with data from elsewhere in eastern Iowa. The base of the Rapid Mbr is drawn at an abrupt lithic change above packstones of the Solon Mbr, marking a regional transgressive event. The basal 2.6 m of the Rapid is dominated by argillaceous skeletal wackestones with common brachiopods and echinoderm debris, interspersed with thin mudstones. The overlying 4 m comprises a series of 50--100 cm thick couplets which display alternations of thin mudstones and thicker brachiopod-rich wackepackstones. The next unit (2.9 m) is dominated by sparse-skeletal argillaceous mudstones. The paucity of burrowing and skeletal benthos through much of the unit is interpreted to reflect bottom oxygen stress in a relatively deep, possibly stratified cratonic seaway. Nevertheless, skeletal horizons within the unit indicate episodically favorable benthic conditions. The mudstone unit shallows upward into a brachiopod-rich wackestone interval which is, in turn, capped by a condensed horizon of phosphatic and glauconitic enrichment (near base of subterminus Fauna). Above this, two regionally extensive coral-rich biostromes occur. Upper Rapid strata show a complex of wackestone and packstone facies, with glauconitic enrichment and hardgrounds noted. The member is capped by shoal-water grainstones in the Coralville area, and by peritidal facies in northern Iowa.

  17. Families as Case Managers: A Longitudinal Study.

    ERIC Educational Resources Information Center

    Seltzer, Marsha Mailick; And Others

    1989-01-01

    Performed follow-up study measuring effects of case management training on management activities of families of elderly persons. Interviewed 78 subjects from original study and found case management to be normative activity for families of elderly. Noted differences reported between male and female case managers and in types of obstacles…

  18. Case Studies for Effective Business Instruction.

    ERIC Educational Resources Information Center

    McAlister-Kizzier, Donna

    This book is designed as a resource for educators who teach business content in a variety of instructional settings. It contains case studies representing all functional areas of business, including corporate training, for grades 7 through graduate education. Chapter 1 provides an overview of the case study method. The history of the case method,…

  19. Drive Electric Vermont Case Study

    SciTech Connect

    Wagner, Fred; Roberts, Dave; Francfort, Jim; White, Sera

    2016-03-01

    Currently in the United States, the heavy majority of plug-in electric vehicle (PEV) sales have been in highly conducive, selected, metropolitan areas; opposed to more broad distribution across the country. The U.S. Department of Energy’s EV Everywhere Grand Challenge is looking carefully at the barriers and opportunities that exist to enable small and midsize communities to partake in the PEV market and benefit from the economic and environmental advantages of PEVs. In order to gain insight into these challenges and barriers, DOE selected a success story (i.e., Drive Electric Vermont) as the subject of this case study, as the state of Vermont is tied with Detroit, Michigan in having the highest percentage of 2014 (most recent complete data) PEV registrations for cold weather U.S. cities and has seen more than a sixfold increase in charging stations over the last three years. The overall objective of this case study was to use the lessons learned from Drive Electric Vermont to determine what activities are most effective at encouraging acquisitions of PEVs and deployment of charging infrastructure in small to midsize communities, prioritizing and sequencing their implementation, identifying robust means for extrapolation, and applying this understanding to other small to midsize communities across the nation. The Drive Electric Vermont Program was formed in 2012 with a goal of increasing the use of electrified transportation in Vermont through policy development, education and outreach, and infrastructure development. The Drive Electric Vermont Program can be broadly broken into four components: (1) strategic planning/leadership, (2) stakeholder/partnership development, (3) education and outreach, and (4) incentives. The early phases of the program focused heavily on strategic planning, and stakeholder and partnership development, followed by a transition to education and outreach activities, charging infrastructure development, and grant and incentive programs

  20. Pyourachus: study of two cases.

    PubMed

    Thapar, R B; Jha, V U; Mehta, R U; Shah, G R

    2006-07-01

    The urachus, or median umbilical ligament, is a midline tubular structure that extends upward from the anterior dome of the bladder toward, the umbilicus and represents the vestigial remnant of at least two embryonic structures, the cloaca and the allantois. The tubular urachus normally involutes before birth, remaining as a fibrous band, however its persistence can give rise to various clinical problems, not only in infants and children but also in adults. We report two cases of pyourachus at our institute with a review of the clinical presentation, imaging findings and surgical management. Both our patients were young males, with haematuria being the presenting feature in one case which has not been previously described in literature.

  1. National Dam Safety Program. Tomhannock Spillway Dam (Inventory Number N.Y. 117), Upper Hudson River Basin, Rensselaer County, New York. Phase I Inspection Report,

    DTIC Science & Technology

    1981-08-01

    b> Vr &V, -%Mae,. Of- /9&7 -DA F 7-B I I I I-- I I I |- r •i APPENDIX C jIYDROLOGIC/HYDRAULIC, ENGINEERING DATA AND COMPUTATIONS I DRAINAGE BASIN I I...a, oth "oonP ith W th - ltweed the two spillways in A medite tepearetakn tout han~lyin hat iht ?eant of concrfte. ft bs believed edt ttpsaattke of

  2. Case Studies for Management Development in Bangladesh.

    ERIC Educational Resources Information Center

    McLean, Gary N.

    Eight case studies appropriate for use in a course in management development were prepared and are provided in this document. The typical case describes a real business situation in which a real manager had to reach a decision. The case gives quantitative and qualitative information that is, or may be, relevant to that decision. Questions for…

  3. Study on Case Teaching of Financial Management

    ERIC Educational Resources Information Center

    Che, Zhenghong; Che, Zhengmei

    2011-01-01

    Case teaching is an efficient teaching method of management. It plays an important role to enhance the students' ability to practice the theory. However, case teaching of financial management has not achieved the expected results. The paper aims to study the importance, characteristics and corresponding methods of case teaching method of financial…

  4. Associative visual agnosia: a case study.

    PubMed

    Charnallet, A; Carbonnel, S; David, D; Moreaud, O

    2008-01-01

    We report a case of massive associative visual agnosia. In the light of current theories of identification and semantic knowledge organization, a deficit involving both levels of structural description system and visual semantics must be assumed to explain the case. We suggest, in line with a previous case study, an alternative account in the framework of (non abstractive) episodic models of memory.

  5. Case study: a bridge across the paradigms.

    PubMed

    Luck, Lauretta; Jackson, Debra; Usher, Kim

    2006-06-01

    Case study as a teaching and research tool has an extensive history in health and social sciences. Despite its suitability for many of the research questions that face nurses, nurses have not fully embraced case study as a comprehensive approach for research. The vagaries of the real-life clinical setting can confound methodologically purist researchers. Case study provides a milieu in which nurse researchers can respond to these vagaries and move towards a paradigmatic openness. In this paper, we argue that case study offers, as yet, under-explored and under-utilised potential as a bridge across the traditional research paradigms. We argue that case study has broad research application and epistemological, ontological and methodological flexibility. When used as a research approach, case study is both the process and end product of research. It provides a delineated boundary for inquiry, and a structural process within which any methods appropriate to investigating a research area can be applied.

  6. Effects of Y-type spillway lateral contraction ratios on debris-flowpatterns and scour features downriver of a check dam

    NASA Astrophysics Data System (ADS)

    Chen, Huayong; Liu, Jinfeng; Zhao, Wanyu

    2016-11-01

    Debris flows often cause devastating damage to property and can injure or kill residents in mountainous areas. The construction of check dams in debris-flow valleys is considered a useful strategy for mitigating the damages downstream. In this paper, a new type of spillway structure with lateral contraction was proposed to distribute debris flows after the check dam storage filled up. Four different lateral contraction ratios of the spillway were considered in experiments that investigated debris-flow patterns, scour characteristics, and energy dissipation rates when debris flows passed through the spillway. The results indicated that lateral contraction considerably influenced the extension of debris-flow nappes. The drop length of the nappe at η = 0.7 (η means lateral contraction ratio) was approximately 1.4 times larger than at η = 0.4. The collision, friction, and mixing forces between the debris-flow nappes and debris flows in downstream plunge pools dissipated much of the debris-flow kinetic energy, ranging from 42.03 to 78.08 % at different contraction ratios. Additionally, based on a dimensionless analysis, an empirical model was proposed to predict the maximum scour depth downriver of a check dam. It indicated that the results calculated by the model exhibited good agreement with the experimental results.

  7. Northeastern Pennsylvania Retrospective Case Study Fact Sheet

    EPA Pesticide Factsheets

    EPA conducted a retrospective case study in northeastern Pennsylvania to investigate reported instances of contaminated drinking water resources in areas where hydraulic fracturing activities occurred

  8. How To Set Up Your Own Small Business. Service Company Case Study. Manufacturing Firm Case Study. Retail Store Case Study.

    ERIC Educational Resources Information Center

    Fallek, Max

    This collection of case studies is intended for use in a course in setting up a small business. The first, a case study of the process of setting up a service company, covers analyzing the pros and cons of starting one's own business, assessing the competition and local market, and selecting a site for and financing the business. The principal…

  9. Case studies in conservation science

    NASA Astrophysics Data System (ADS)

    Bisulca, Christina

    The research presented in this dissertation covers three separate topics of conservation as defined by the National Science Foundation: 1) Materials Stabilization, Strengthening, Monitoring, and Repair; 2. Understanding Material Degradation and Aging; and 3) Materials and Structural Characterization of Cultural Heritage Objects (the 'technical study'). The first topic is addressed through a study to assess the consolidant tetraethoxysilane for the stabilization of alum treated wood. Falling under materials degradation studies is a study published in American Museum Novitates to understand how environmental conditions affect the aging of fossil resins from five different deposits. Two separate studies are included in technical study of cultural heritage objects which comprises the third research area of materials characterization. The first is a survey of red dyes used in Chinese paintings from the Ming Dynasty to the Early Republic (1364-1911). The second is a study of the pigments, dyes and binders used in Hawaiian barkcloth (kapa) from the 19th century.

  10. Sediment and nutrient trapping as a result of a temporary Mississippi River floodplain restoration: The Morganza Spillway during the 2011 Mississippi River Flood

    USGS Publications Warehouse

    Kroes, Daniel; Schenk, Edward R.; Noe, Gregory; Benthem, Adam J.

    2015-01-01

    The 2011 Mississippi River Flood resulted in the opening of the Morganza Spillway for the second time since its construction in 1954 releasing 7.6 km3 of water through agricultural and forested lands in the Morganza Floodway and into the Atchafalaya River Basin. This volume, released over 54 days, represented 5.5% of the Mississippi River (M.R.) discharge and 14% of the total discharge through the Atchafalaya River Basin (A.R.B.) during the Spillway operation and 1.1% of the M.R. and 3.3% of the A.R.B. 2011 water year discharge. During the release, 1.03 teragrams (Tg) of sediment was deposited on the Morganza Forebay and Floodway and 0.26 Tg was eroded from behind the Spillway structure. The majority of deposition (86 %) occurred in the Forebay (upstream of the structure) and within 4 km downstream of the Spillway structure with minor deposition on the rest of the Floodway. There was a net deposition of 26 × 10−4 Tg of N and 5.36 × 10−4 Tg of P, during the diversion, that was equivalent to 0.17% N and 0.33% P of the 2011 annual M.R. load. Median deposited sediment particle size at the start of the Forebay was 13 μm and decreased to 2 μm 15 km downstream of the Spillway structure. Minimal accretion was found greater than 4 km downstream of the structure suggesting the potential for greater sediment and nutrient trapping in the Floodway. However, because of the large areas involved, substantial sediment mass was deposited even at distances greater than 30 km. Sediment and nutrient deposition on the Morganza Floodway was limited because suspended sediment was quickly deposited along the flowpath and not refreshed by incremental water exchanges between the Atchafalaya River (A.R.) and the Floodway. Sediment and nutrient trapping could have been greater and more evenly distributed if additional locations of hydraulic input from and outputs to the A.R. (connectivity) were added.

  11. Regional case studies--Africa.

    PubMed

    Prentice, Andrew M

    2009-01-01

    Africa is the final continent to be affected by the nutrition transition and, as elsewhere, is characterized by the paradoxical coexistence of malnutrition and obesity. Several features of the obesity epidemic in Africa mirror those in other emerging nations: it penetrates the richer nations and urban areas first with a strong urban- rural gradient; initially it affects the wealthy, but later there is a demographic switch as obesity becomes a condition more associated with poverty, and it shares many of the same drivers related to the increasing affordability of highly refined oils and carbohydrates, and a move away from subsistence farm work and towards sedentary lifestyles. Africa also has some characteristics of the obesity epidemic that stand out from other regions such as: (1) excepting some areas of the Pacific, Africa is probably the only region in which obesity (especially among women) is viewed culturally as a positive and desirable trait, leading to major gender differences in obesity rates in many countries; (2) most of Africa has very low rates of obesity in children, and to date African obesity is mostly an adult syndrome; (3) Africans seem genetically prone to higher rates of diabetes and hypertension in association with obesity than Caucasians, but seem to be relatively protected from dislipidemias; (4) the case-specific deaths and disabilities from diabetes and hypertension in Africa are very high due to the paucity of health services and the strain that the 'double burden' of disease places on health systems.

  12. Case study: design? Method? Or comprehensive strategy?

    PubMed

    Jones, Colin; Lyons, Christina

    2004-01-01

    As the case study approach gains popularity in nursing research, questions arise with regard to what it exactly is, and where it appears to fit paradigmatically. Is it a method, a design, are such distinctions important? Colin Jones and Christina Lyons review some of the key issues, with specific emphasis on the use of case study within an interpretevist philosophy.

  13. Case Studies in Reading: An Annotated Bibliography.

    ERIC Educational Resources Information Center

    Trela, Thaddeus M., Comp.; Becker, George J., Comp.

    Descriptions of individual diagnosis and remediation of reading problems experienced by students at all levels are included in this annotated bibliography. Included are books, texts having case study sections, and journal reports which together comprise useful sources of case studies of reading disabilities. An opening section lists nine "first…

  14. Case Studies in Middle Management Supervision

    ERIC Educational Resources Information Center

    White, Lori S.

    2011-01-01

    This chapter presents a series of supervision-related case studies of situations that midlevel managers might face. Individuals enrolled in a midlevel management professional development course recommended the topics selected for this chapter. Drawing upon her experience teaching the course, the author selected four case studies that individuals…

  15. A Case Study of "Empathetic Teaching Artistry"

    ERIC Educational Resources Information Center

    Risner, Doug

    2014-01-01

    This case study is one of twenty cases derived from Anderson and Risner's international study of teaching artists in dance, and theatre, which investigated participants' (n=172) artistic and academic preparation in dance, and theatre, initial entry into the teaching artist field, rewards, challenges, and obstacles in participants' work, artists'…

  16. Iowa College Student Aid Commission Case Study

    ERIC Educational Resources Information Center

    Leigh, Rachel A.

    2007-01-01

    The purpose of this descriptive case study was to trace the policy production process of a state agency, the Iowa College Student Aid Commission (Commission), to its function today. This case study relied on a review of federal and state statutes, a news article search, biennium reports of the Commission, and information obtained from the…

  17. Successful Principal Leadership: Australian Case Studies

    ERIC Educational Resources Information Center

    Gurr, David; Drysdale, Lawrie; Mulford, Bill

    2005-01-01

    Purpose: This paper aims to provide an Australian perspective on successful school leadership. Design/methodology/approach: The paper focuses on case studies in two Australian states (Tasmania and Victoria). Case studies for each state were developed independently and are reported separately. Findings: The findings show a remarkable degree of…

  18. Chemical Case Studies: Science-Society "Bonding."

    ERIC Educational Resources Information Center

    Hofstein, Avi; Nae, Nehemia

    1981-01-01

    Describes a unit designed to illustrate the "science-society-technology connection," in which three case studies of the chemical industry in Israel are presented to high school chemistry students. Chosen for the unit are case studies on copper production in Timna, on plastics, and on life from the Dead Sea. (CS)

  19. A Case Study of "Empathetic Teaching Artistry"

    ERIC Educational Resources Information Center

    Risner, Doug

    2014-01-01

    This case study is one of twenty cases derived from Anderson and Risner's international study of teaching artists in dance, and theatre, which investigated participants' (n=172) artistic and academic preparation in dance, and theatre, initial entry into the teaching artist field, rewards, challenges, and obstacles in participants' work, artists'…

  20. Twenty Techniques for Teaching with Case Studies

    ERIC Educational Resources Information Center

    Sudzina, Mary R.

    2005-01-01

    Problem-based learning and teaching with case studies are instructional approaches that are increasingly being applied in a variety of disciplines, such as business, law, medicine, and education. Instructors who have experienced traditional, teacher-centered instruction are often looking for ways to successfully integrate case studies, a…

  1. Twenty Techniques for Teaching with Case Studies

    ERIC Educational Resources Information Center

    Sudzina, Mary R.

    2005-01-01

    Problem-based learning and teaching with case studies are instructional approaches that are increasingly being applied in a variety of disciplines, such as business, law, medicine, and education. Instructors who have experienced traditional, teacher-centered instruction are often looking for ways to successfully integrate case studies, a…

  2. Using Case Studies: An International Approach

    ERIC Educational Resources Information Center

    McClam, Tricia; Woodside, Marianne

    2005-01-01

    Case studies as an instructional strategy have been used in many disciplines, including law, teacher education, science, medicine, and business. Among the benefits of this method of instruction are involving students in learning, developing their critical thinking skills, promoting communication, and engaging in critical analysis. Case studies are…

  3. Case Studies for Teaching Students with Dyslexia

    ERIC Educational Resources Information Center

    Macnamara, Gael R.

    2004-01-01

    This easy-to-use book of case studies helps you recognize the signs of dyslexia and prescribe effective teaching strategies for students with dyslexia. It includes a Case Study Analysis Sheet so you can work through important aspects of a student's personal, academic, and social life. You can then compare what you've compiled to the author's…

  4. Case-Control Study of Writer's Cramp

    ERIC Educational Resources Information Center

    Roze, E.; Soumare, A.; Pironneau, I.; Sangla, S.; de Cock, V. Cochen; Teixeira, A.; Astorquiza, A.; Bonnet, C.; Bleton, J. P.; Vidailhet, M.; Elbaz, A.

    2009-01-01

    Task-specific focal dystonias are thought to be due to a combination of individual vulnerability and environmental factors. There are no case-control studies of risk factors for writer's cramp. We undertook a case-control study of 104 consecutive patients and matched controls to identify risk factors for the condition. We collected detailed data…

  5. Case Study Considerations for Teaching Educational Psychology.

    ERIC Educational Resources Information Center

    Sudzina, Mary R.

    This paper examines the decisions, benefits, and difficulties in teaching educational psychology through a constructivist case study approach. Recent interest in and inquiry into constructivism, pedagogical content knowledge, and case study methodology are influencing the content and goals of educational psychology in teacher preparation. The…

  6. Teaching Case Studies: A Collaborative Approach.

    ERIC Educational Resources Information Center

    Buffington, James R.; Harper, Jeffrey S.

    Many of the Association to Advance Collegiate Schools of Business (AACSB) accredited schools require undergraduate Management Information Systems (MIS) majors to take a course in the management of information technology. Over half of these schools utilize case studies in the teaching of this course. The authors emphasize that case studies are an…

  7. Collaboration in Distance Education. International Case Studies.

    ERIC Educational Resources Information Center

    Moran, Louise, Ed.; Mugridge, Ian, Ed.

    This book contains nine case studies of collaboration in distance education. The case studies focus on such aspects of collaboration in distance education as the following: roles of individual institutional partners; importance of personal relationships; benefits of collaboration to individual partners; conflicts between collaboration and…

  8. Case-Control Study of Writer's Cramp

    ERIC Educational Resources Information Center

    Roze, E.; Soumare, A.; Pironneau, I.; Sangla, S.; de Cock, V. Cochen; Teixeira, A.; Astorquiza, A.; Bonnet, C.; Bleton, J. P.; Vidailhet, M.; Elbaz, A.

    2009-01-01

    Task-specific focal dystonias are thought to be due to a combination of individual vulnerability and environmental factors. There are no case-control studies of risk factors for writer's cramp. We undertook a case-control study of 104 consecutive patients and matched controls to identify risk factors for the condition. We collected detailed data…

  9. Five case studies of multifamily weatherization programs

    SciTech Connect

    Kinney, L; Wilson, T.; Lewis, G.; MacDonald, M.

    1997-12-31

    The multifamily case studies that are the subject of this report were conducted to provide a better understanding of the approach taken by program operators in weatherizing large buildings. Because of significant variations in building construction and energy systems across the country, five states were selected based on their high level of multifamily weatherization. This report summarizes findings from case studies conducted by multifamily weatherization operations in five cities. The case studies were conducted between January and November 1994. Each of the case studies involved extensive interviews with the staff of weatherization subgrantees conducting multifamily weatherization, the inspection of 4 to 12 buildings weatherized between 1991 and 1993, and the analysis of savings and costs. The case studies focused on innovative techniques which appear to work well.

  10. Are nested case-control studies biased?

    PubMed Central

    Langholz, Bryan; Richardson, David

    2014-01-01

    It has been recently asserted that the nested case-control study design, in which case-control sets are sampled from cohort risk sets, can introduce bias (“study design bias”) when there are lagged exposures. The bases for this claim include a theoretic and an “empirical evaluation” argument. Both of these arguments are examined and found to be incorrect. Appropriate methods to explore the performance of nested case-control study designs, analysis methods, and compute power and sample size from an existing cohort are described. This empirical evaluation approach relies on simulating case-control outcomes from risk sets in the cohort from which the case-control study is to be performed. Because it is based on the underlying cohort structure, the empirical evaluation can provide an assessment that is tailored to the specific characteristics of the study under consideration. The methods are illustrated using samples from the Colorado Plateau uranium miners cohort. PMID:19289963

  11. Theoretical pluralism in psychoanalytic case studies.

    PubMed

    Willemsen, Jochem; Cornelis, Shana; Geerardyn, Filip M; Desmet, Mattias; Meganck, Reitske; Inslegers, Ruth; Cauwe, Joachim M B D

    2015-01-01

    The aim of this study is to provide an overview of the scientific activity of different psychoanalytic schools of thought in terms of the content and production of case studies published on ISI Web of Knowledge. Between March 2013 and November 2013, we contacted all case study authors included in the online archive of psychoanalytic and psychodynamic case studies (www.singlecasearchive.com) to inquire about their psychoanalytic orientation during their work with the patient. The response rate for this study was 45%. It appears that the two oldest psychoanalytic schools, Object-relations psychoanalysis and Ego psychology or "Classical psychoanalysis" dominate the literature of published case studies. However, most authors stated that they feel attached to two or more psychoanalytic schools of thought. This confirms that the theoretical pluralism in psychoanalysis stretches to the field of single case studies. The single case studies of each psychoanalytic school are described separately in terms of methodology, patient, therapist, or treatment features. We conclude that published case studies features are fairly similar across different psychoanalytic schools. The results of this study are not representative of all psychoanalytic schools, as some do not publish their work in ISI ranked journals.

  12. Theoretical pluralism in psychoanalytic case studies

    PubMed Central

    Willemsen, Jochem; Cornelis, Shana; Geerardyn, Filip M.; Desmet, Mattias; Meganck, Reitske; Inslegers, Ruth; Cauwe, Joachim M. B. D.

    2015-01-01

    The aim of this study is to provide an overview of the scientific activity of different psychoanalytic schools of thought in terms of the content and production of case studies published on ISI Web of Knowledge. Between March 2013 and November 2013, we contacted all case study authors included in the online archive of psychoanalytic and psychodynamic case studies (www.singlecasearchive.com) to inquire about their psychoanalytic orientation during their work with the patient. The response rate for this study was 45%. It appears that the two oldest psychoanalytic schools, Object-relations psychoanalysis and Ego psychology or “Classical psychoanalysis” dominate the literature of published case studies. However, most authors stated that they feel attached to two or more psychoanalytic schools of thought. This confirms that the theoretical pluralism in psychoanalysis stretches to the field of single case studies. The single case studies of each psychoanalytic school are described separately in terms of methodology, patient, therapist, or treatment features. We conclude that published case studies features are fairly similar across different psychoanalytic schools. The results of this study are not representative of all psychoanalytic schools, as some do not publish their work in ISI ranked journals. PMID:26483725

  13. Case Study on Quality Education

    ERIC Educational Resources Information Center

    Habib, Zahida

    2011-01-01

    Quality of Education, especially at Primary level, is an important issue to be discussed at the International Forum. This study highlights the quality of primary education through a comparison of the quality of Community Model Schools and Govt. Girls Primary Schools in Pakistan. Community Model Schools were established under Girls Primary…

  14. Salary Equity: A Case Study.

    ERIC Educational Resources Information Center

    McConkey, Joan; And Others

    1993-01-01

    Describes a six-year effort to complete a salary equity review for librarians at the University of Colorado (Boulder) in the context of general salary equity for women and minority faculty. Recounts the difficulties before a male counterpart study was chosen to complete the process, and advises others seeking salary equity to be realistic,…

  15. Associative Visual Agnosia: A Case Study

    PubMed Central

    Charnallet, A.; Carbonnel, S.; David, D.; Moreaud, O.

    2008-01-01

    We report a case of massive associative visual agnosia. In the light of current theories of identification and semantic knowledge organization, a deficit involving both levels of structural description system and visual semantics must be assumed to explain the case. We suggest, in line with a previous case study [1], an alternative account in the framework of (non abstractive) episodic models of memory [4]. PMID:18413915

  16. Case Studies in Wilderness Medicine, the Sequel.

    ERIC Educational Resources Information Center

    Tarter, Shana Lee; Gray, Melissa

    Five case studies illustrate evacuation decision making in a wilderness setting. The cases describe medical problems encountered during wilderness trips: (1) a hiker suffering from hypothermia; (2) a 49-year-old man with chest pains; (3) a 19-year-old woman with abdominal pain; (4) a young woman in anaphylactic shock; and (5) a teenager hit on the…

  17. Case Study: A Separation of Powers Lesson.

    ERIC Educational Resources Information Center

    Jenkins, Steve

    1986-01-01

    Presents a case study involving students in the issue of separation of powers as applied to the 1952 Immigration and Nationality Act. Students examine the case of Jagdish Rai Chadha, an immigrant threatened with deportation whose problems resulted in 1983 U.S. Supreme Court decision declaring legislative veto provision of Immigration and…

  18. Case Studies of Environmental Risks to Children.

    ERIC Educational Resources Information Center

    Goldman, Lynn R.

    1995-01-01

    Presents case studies on children's exposure to pesticides, including risks through the use of the insecticide aldicarb on bananas, the home use of diazinon, and the use of interior house paint containing mercury. These cases illustrate how regulatory agencies, parents, health-care providers, and others who come into contact with children have…

  19. Mineral scale management. Part 1, Case studies

    Treesearch

    Peter W. Hart; Alan W. Rudie

    2006-01-01

    Mineral scale increases operating costs, extends downtime, and increases maintenance requirements. This paper presents several successful case studies detailing how mills have eliminated scale. Cases presented include calcium carbonate scale in a white liquor strainer, calcium oxalate scale in the D0 stage of the bleach plant, enzymatic treatment of brown stock to...

  20. Case Studies of Environmental Risks to Children.

    ERIC Educational Resources Information Center

    Goldman, Lynn R.

    1995-01-01

    Presents case studies on children's exposure to pesticides, including risks through the use of the insecticide aldicarb on bananas, the home use of diazinon, and the use of interior house paint containing mercury. These cases illustrate how regulatory agencies, parents, health-care providers, and others who come into contact with children have…

  1. Case Study: Mini-Case Studies: Small Infusions of Active Learning for Large-Lecture Courses

    ERIC Educational Resources Information Center

    Carloye, Lisa

    2017-01-01

    In this article, the author introduces the usage of case studies to be an excellent method for engaging students through stories. The author notes she developed a series of mini-case studies that can be implemented, with a little advance preparation, within a 10- to 15-minute window during lecture. What makes them "mini" case studies?…

  2. A Unique Case of Intraabdominal Polyorchidism: A Case Study

    PubMed Central

    Alemayehu, Biruk; Kozusko, Steven D.; Borao, Frank; Vates III, Thomas S.

    2016-01-01

    Background. Polyorchidism, alternatively supernumerary testes (SNT), is a condition where an individual is born with more than two testicles. This congenital anomaly is quite rare and the literature has described various presentations. Questions/Purposes. To our knowledge, this presentation of polyorchidism has yet to be described in the literature. The goal of this case study is to add to the pediatric, general, and urologic surgery's body of knowledge of the subject matter. Case Study. A nine-month-old boy was admitted for an impalpable right testis and phimosis. At the time of surgical exploration, there appeared to be polyorchid testis on the right-hand side, with three masses that potentially appeared to be undescended testes. Discussion. Proponents of a conservative approach argue that infertility is common in patients with polyorchidism and, by preserving a potentially functional SNT, there may be improved spermatogenesis. When performing definitive surgical treatment, meticulous intra-abdominal and intrainguinal exploration must be undertaken. Orchiopexy should be performed to reduce the chances of torsion, malignancy, and infertility. Conclusion. Our case is important to the literature as it is the first known case of polyorchidism with 3 SNT on the right side, located intra-abdominally, and in a patient less than 1 year of age. PMID:27722006

  3. Case-control studies in neurosurgery.

    PubMed

    Nesvick, Cody L; Thompson, Clinton J; Boop, Frederick A; Klimo, Paul

    2014-08-01

    Observational studies, such as cohort and case-control studies, are valuable instruments in evidence-based medicine. Case-control studies, in particular, are becoming increasingly popular in the neurosurgical literature due to their low cost and relative ease of execution; however, no one has yet systematically assessed these types of studies for quality in methodology and reporting. The authors performed a literature search using PubMed/MEDLINE to identify all studies that explicitly identified themselves as "case-control" and were published in the JNS Publishing Group journals (Journal of Neurosurgery, Journal of Neurosurgery: Pediatrics, Journal of Neurosurgery: Spine, and Neurosurgical Focus) or Neurosurgery. Each paper was evaluated for 22 descriptive variables and then categorized as having either met or missed the basic definition of a case-control study. All studies that evaluated risk factors for a well-defined outcome were considered true case-control studies. The authors sought to identify key features or phrases that were or were not predictive of a true case-control study. Those papers that satisfied the definition were further evaluated using the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) checklist. The search detected 67 papers that met the inclusion criteria, of which 32 (48%) represented true case-control studies. The frequency of true case-control studies has not changed with time. Use of odds ratios (ORs) and logistic regression (LR) analysis were strong positive predictors of true case-control studies (for odds ratios, OR 15.33 and 95% CI 4.52-51.97; for logistic regression analysis, OR 8.77 and 95% CI 2.69-28.56). Conversely, negative predictors included focus on a procedure/intervention (OR 0.35, 95% CI 0.13-0.998) and use of the word "outcome" in the Results section (OR 0.23, 95% CI 0.082-0.65). After exclusion of nested case-control studies, the negative correlation between focus on a procedure

  4. Modalities of Generalization Through Single Case Studies.

    PubMed

    Zittoun, Tania

    2016-11-26

    The value of case studies for theory building is still doubted in psychology. The paper argues for the importance of case studies and the possibility of generalizing from these for a specific sociocultural understanding of human development. The paper first clarifies the notion of abduction within case studies, drawing on pragmatists James and Peirce and expanding it with the work of Lewin, and argues that it is the core mechanism that allows generalization from case studies. The second section presents the possibility of generalizing from individual single case studies, for which not only the subjective perspective, but also the dynamics by which the social and cultural environment guide and enable the person's development, have to be accounted for. The third section elaborates the question of institutional case studies, where the challenge is to account both for institutional dynamics, and for persons' trajectories within; this is exemplified with an ongoing study on the process of obtaining citizenship in Switzerland. The paper briefly concludes by highlighting two possible implications of the paper, one concerning the process of theoretical reasoning, the other, the fact that sociocultural psychology could itself be seen as an institution in-the-making.

  5. Memory and Learning: A Case Study.

    ERIC Educational Resources Information Center

    Webster, Raymond E.

    1986-01-01

    The usefulness of the Learning Efficency Test (LET), an approach to assessing the learning efficiency and short-term memory recall capacity in children, is described via a case study demonstrating the test's use to develop instructional strategies. (CL)

  6. Abstracts of Remediation Case Studies, Volume 9

    EPA Pesticide Factsheets

    This report, published by the Federal Remediation Technologies Roundtable (FRTR), is a collection of recently published abstracts summarizing 13 cost and performance case studies on the use of remediation technologies at contaminated sites.

  7. Retrospective Case Study in Northeastern Pennsylvania

    EPA Pesticide Factsheets

    The EPA chose Bradford County, and parts of neighboring Susquehanna County, as a retrospective case study location because of the extensive hydraulic fracturing activities occurring there, coincident with the large number of homeowner complaints.

  8. Travel Efficiency Assessment Method: Three Case Studies

    EPA Pesticide Factsheets

    This slide presentation summarizes three case studies EPA conducted in partnership with Boston, Kansas City, and Tucson, to assess the potential benefits of employing travel efficiency strategies in these areas.

  9. Review of ORD Nanomaterial Case Studies Workshop

    EPA Pesticide Factsheets

    The following is a letter report from the Executive Committee of the BOSC concerning the review of the ORD Nanomaterial Case Studies Workshop: Developing a Comprehensive Environmental Assessment Research Strategy for Nanoscale Titanium Dioxide.

  10. Performable Case Studies in Ethics Education.

    PubMed

    Robeson, Richard; King, Nancy M P

    2017-09-12

    Bioethics education often includes the study of short stories, novels, plays, and films, because such materials present case examples that can highlight relevant issues and questions especially vividly for a wide range of students. In addition, creative writing is widely used in the education of health professional students and in continuing education settings for health professionals. There are very few academic or professional disciplines that do not use case studies, but the case study in dialogic form has not been standard practice for thousands of years. Dramatic arts casuistry-the creation and performance of short case studies designed specifically to raise bioethics issues for discussion-represents an application of literature and the medical humanities that is both unique and uniquely valuable. This essay describes the development and history of a course that has been successfully taught to medical students and graduate bioethics students, in which the class researches, writes, and performs a case study designed to elicit reflection and discussion about a topic and set of bioethics issues of current interest to both academic and general audiences. The model is also suited to the presentation and discussion of existing case studies, both live and via on-demand audio.

  11. Participative Case Studies: Integrating Case Writing and a Traditional Case Study Approach in a Marketing Context

    ERIC Educational Resources Information Center

    Forman, Howard

    2006-01-01

    Case-based pedagogy is a valuable tool for applying business concepts and theories to organizational contexts. Traditional case-based pedagogy offers such learning opportunities. What this pedagogy lacks, however, is an element of real-time experiential learning opportunities. This research focuses on the advantages of incorporating a case-writing…

  12. Home Start Evaluation Study. Interim Case Studies IIa.

    ERIC Educational Resources Information Center

    Fein, Robert

    This formative evaluation study of Home Start uses a case study approach. A brief case study focuses on the administrative structure and staff resources and responsibilities of National Home Start. Also included are reports on seven local programs developed after two field visits had been made to each program. In the first visit, objectives chosen…

  13. Teaching Business Demography Using Case Studies.

    PubMed

    Swanson, David A; Morrison, Peter A

    2010-02-01

    Many faculty members consider using case studies but not all end up using them. We provide a brief review of what cases are intended to do and identify three ways in which they can be used. We then use an example to illustrate how we have used the case study method in teaching business demography. Among other benefits, we note that the case studies method not only encourages the acquisition of skills by students, but can be used to promote "deep structure learning," an approach naturally accommodates other features associated with the case studies method-the development of critical thinking skills, the use of real world problems, the emphasis of concepts over mechanics, writing and presentation skills, active cooperative learning and the "worthwhileness" of a course. As noted by others, we understand the limitations of the case study method. However, given its strengths, we believe it has a place in the instructional toolbox for courses in business demography. The fact that courses we teach is a testament to our perceived efficacy of this tool.

  14. A Case Study about Communication Strategies

    ERIC Educational Resources Information Center

    Lin, Grace Hui Chin

    2011-01-01

    The primary purpose of this case study was to identify what were Taiwanese University English as a Foreign Language (EFL) learners' perceptions about learning communication strategies. This study collected qualitative data about students' beliefs and attitudes as they learned communication strategies. The research question guiding the study was:…

  15. Predicting Students Drop Out: A Case Study

    ERIC Educational Resources Information Center

    Dekker, Gerben W.; Pechenizkiy, Mykola; Vleeshouwers, Jan M.

    2009-01-01

    The monitoring and support of university freshmen is considered very important at many educational institutions. In this paper we describe the results of the educational data mining case study aimed at predicting the Electrical Engineering (EE) students drop out after the first semester of their studies or even before they enter the study program…

  16. Education and Work Councils: Four Case Studies.

    ERIC Educational Resources Information Center

    Prager, Audrey; And Others

    This collection of four case studies represents the conclusion of a two-phase study of a federal program to sponsor education and work councils. Following an outline of the history and concept of education and work councils as well as the findings of a study of such councils, the importance of council collaboration with selected sectors is…

  17. Case Study Research Methodology in Nursing Research.

    PubMed

    Cope, Diane G

    2015-11-01

    Through data collection methods using a holistic approach that focuses on variables in a natural setting, qualitative research methods seek to understand participants' perceptions and interpretations. Common qualitative research methods include ethnography, phenomenology, grounded theory, and historic research. Another type of methodology that has a similar qualitative approach is case study research, which seeks to understand a phenomenon or case from multiple perspectives within a given real-world context.

  18. Gigantic Suprapubic Lymphedema: A Case Study

    PubMed Central

    Tanhaeivash, Roozbeh; Franiel, Tobias; Grimm, Marc-Oliver

    2016-01-01

    We present the first case study of idiopathic gigantic suprapubic lymphedema and buried penis treated with puboscrotal reconstruction in a patient with initial extreme obesity after an extensive weight reduction (120 kg). Massive localized lymphedema of the suprapubic region should be differentiated from the scrotal type. Severe lymphedema could not resolve on its own and weight reduction does not seem to be helpful in such cases. PMID:27574599

  19. [Asteroid hyalopathy. Ultrastructural study of 3 cases].

    PubMed

    Adenis, J P; Leboutet, M J; Loubet, R

    1984-01-01

    The vitreous of three patients with asteroïd hyalosis (average age: 57 years) was obtained by a two-hand closed pars plana vitrectomy. Asteroïd hyalosis was associated with alcoholic neuropathy in the first case, long standing retinal detachment in the second case, and diabetes mellitus in the third case. The visual acuity before and after the surgical procedure improved from 1.2/6 to 6/6 in the first case, from light perception to 0.3/6 in the second case, from 0.6/6 to 4.8/6 in the third case. The vitreous was studied by different ultrastructural technics : transmission electron microscopy (T.E.M.) scanning electron microscopy (S.E.M.) and electron diffraction X ray analysis (E.D.A.X.). By S.E.M. the asteroïd bodies appeared as rounded structures with an irregular surface connected to each other by fibrous strands among sodium chloride crystals. No cellular remnants were observed. By T.E.M. the asteroïd bodies were composed of interwinned ribbons of multilaminar membranes with a periodicity (10 to 60 A) characteristic of complex lipids, especially phospholipids. At the edge of the ribbons there were dots and sometimes clumps of opaque material that tended to crack out of the specimen with the heat of the electron beam. T.E.M. study disclosed the irregular disposition of the calcific bodies. By E.D.A.X. the calcific composition of the rounded structures could be determined : calcium and phosphorus were the main elements detectable in asteroïd bodies of all sizes for all three patients. The average calcium counts for the three successive cases were : 18, 30, 43 and for phosphorus : 9, 14, 26. Potassium was found in the first case, and sulfur in the third case.(ABSTRACT TRUNCATED AT 250 WORDS)

  20. African-American Women and Doctoral Study: Three Case Studies.

    ERIC Educational Resources Information Center

    King, Susan E.

    Case studies are presented of three African-American women who earned doctoral degrees in physical education and sport disciplines between 1971 and 1990. Personal interviews were conducted with the informants on issues related to the campus environment as well as financial and academic factors. The case studies are analyzed in terms of the women's…

  1. Nanomaterial Case Study: A Comparison of Multiwalled ...

    EPA Pesticide Factsheets

    The draft document is intended to be used as part of a process to identify what is known and, more importantly, what is not yet known that could be of value in assessing the broad implications of specific nanomaterials. Like previous case studies (see History/ Chronology below), this draft case study on multiwalled carbon nanotubes (MWCNTs) is based on the comprehensive environmental assessment (CEA) approach, which consists of both a framework and a process. Unlike previous case studies this case study incorporates information about a traditional (i.e., “non-nano-enabled”) product, against which the MWCNT flame-retardant coating applied to upholstery textiles (i.e., the “nano-enabled” product) can be compared. The comparative element serves dual-purposes: 1) to provide a more robust database that facilitates identification of data gaps related to the nano-enabled product and 2) to provide a context for identifying key factors and data gaps for future efforts to evaluate risk-related trade-offs between a nano-enabled and non-nano-enabled product. This draft case study does not represent a completed or even a preliminary assessment of MWCNTs; rather, it uses the CEA framework to structure information from available literature and other resources (e.g., government reports) on the product life cycle, fate and transport processes in various environmental media, exposure-dose characterization, and impacts in human, ecological, and environmental receptors.

  2. Nanomaterial Case Study: A Comparison of Multiwalled ...

    EPA Pesticide Factsheets

    The draft document is intended to be used as part of a process to identify what is known and, more importantly, what is not yet known that could be of value in assessing the broad implications of specific nanomaterials. Like previous case studies (see History/ Chronology below), this draft case study on multiwalled carbon nanotubes (MWCNTs) is based on the comprehensive environmental assessment (CEA) approach, which consists of both a framework and a process. Unlike previous case studies this case study incorporates information about a traditional (i.e., “non-nano-enabled”) product, against which the MWCNT flame-retardant coating applied to upholstery textiles (i.e., the “nano-enabled” product) can be compared. The comparative element serves dual-purposes: 1) to provide a more robust database that facilitates identification of data gaps related to the nano-enabled product and 2) to provide a context for identifying key factors and data gaps for future efforts to evaluate risk-related trade-offs between a nano-enabled and non-nano-enabled product. This draft case study does not represent a completed or even a preliminary assessment of MWCNTs; rather, it uses the CEA framework to structure information from available literature and other resources (e.g., government reports) on the product life cycle, fate and transport processes in various environmental media, exposure-dose characterization, and impacts in human, ecological, and environmental receptors.

  3. CASE STUDY: DIELDRIN ATTACK IN DALYAN LAGOON

    EPA Science Inventory

    During the first two weeks of December 2005, NATO sponsored an Advanced Study Institute (ASI) in Istanbul, Turkey. Part of this ASI involved a case study of a terrorist attack, where a chemical was assumed to be dumped into Sulunger Lake in Turkey. This chapter documents the re...

  4. Anthropology and Popular Culture: A Case Study.

    ERIC Educational Resources Information Center

    Estes, Jack

    The study of popular culture in the United States is an appropriate anthropological endeavor, as evidenced in a case study of the volcanic eruption of Mt. St. Helens in Oregon. By examining its popular arts, anthropologists gain understanding of the culture and its people. For example, an analysis of reactions to the Mt. St. Helens eruption…

  5. Prader-Willi Disease: A Case Study.

    ERIC Educational Resources Information Center

    Forbus, William R., III

    A case study focuses on the characteristics and physical management of a 15-year-old with Prader-Willi Syndrome, a birth defect associated with hypotonia, insatiable appetite, hypogonadism, central nervous system dysfunction, and abnormal growth and development . A literature review addresses studies dealing with behavior modification of obesity…

  6. Vandalism Prevention Programs: A Case Study Approach.

    ERIC Educational Resources Information Center

    White, James; Fallis, Anita

    The objective of this study was to identify, describe, and appraise existing behavior-oriented, vandalism-prevention programs using a case-study approach. This report summarizes an investigation of three programs in Ontario (Canada): Project PRIDE (Pupils Responsible in Determining their own Environment); Operation Aware; and a Diversion program.…

  7. Case Studies of Three Interorganizational Arrangements.

    ERIC Educational Resources Information Center

    Yin, Robert K.; And Others

    As part of their study of interorganizational collaboration, researchers present three detailed case studies of how regional education agencies (REAs) supply knowledge utilization services to the school districts they serve. The three REAs are the Wayne County (Michigan) Intermediate School District (with 36 districts), the Educational Improvement…

  8. Curriculum Formation: A Case Study from History

    ERIC Educational Resources Information Center

    Shay, Suellen

    2011-01-01

    Drawing on the work of Bernstein and Maton and using a case-study approach, this study explores the formation of an undergraduate history curriculum at the University of Cape Town. This article focuses on two periods of curriculum formation referred to as history as canon and history as social science. With respect to these two curriculum periods…

  9. Collaborative Assessment: Middle School Case Study

    ERIC Educational Resources Information Center

    Parkison, Paul T.

    2014-01-01

    Utilizing a participant observer research model, a case study of the efficacy of a collaborative assessment methodology within a middle school social studies class was conducted. A review of existing research revealed that students' perceptions of assessment, evaluation, and accountability influence their intrinsic motivation to learn. A…

  10. Case Study: Interventions for an ADHD Student

    ERIC Educational Resources Information Center

    Hartlep, Nicholas Daniel

    2009-01-01

    This case study was done in partial fulfillment of a Master of Science in Education (M.S.Ed.) Graduate Course the participant-observer was completing. The participant-observer learned a lot about Dmitrov, the child in this study. Dmitrov was a 2nd-grade student who was diagnosed (late in the school year) with Attention Deficit Hyperactivity…

  11. Connecting Reading and Writing: A Case Study

    ERIC Educational Resources Information Center

    Li, Zhanfang

    2015-01-01

    Connecting reading and writing, proposed by many scholars, is realized in this case study. The 30 participants in this study are the English majors of the third year in one School of Foreign Languages in Beijing. They are encouraged to write journals every week, based on the source text materials in their Intensive Reading class, with the final…

  12. Mecca Hills: Visitor research case study

    Treesearch

    Deborah Chavez; John Baas; Patricia Winter

    1993-01-01

    This "Case Study" represents the first in a series of reports which provide insight into specific management environments and the factors significant to an understanding of the expectations and demands of public land visitors in the West. The study describes the methods and results of a two year inventory of visitors in a wildland area in the desert...

  13. Technologies in Literacy Learning: A Case Study

    ERIC Educational Resources Information Center

    Cloonan, Anne

    2010-01-01

    This article draws on outcomes of a study which explored changes in teachers' literacy pedagogies as a result of their participation in a collaborative teacher professional learning project. The educational usability of schemas drawn from multiliteracies and Learning by Design theory is illustrated through a case study of a teacher's work on…

  14. A Multiple Case Study of Innovation

    ERIC Educational Resources Information Center

    Zheng, Wei; Khoury, Anne E.

    2008-01-01

    This study aims to explore how leadership and contextual factors influence innovation in R&D teams in national laboratories, using the approach of multiple case studies. This paper provides some preliminary findings from two highly innovative teams residing in two national laboratories in the US. The preliminary results suggested several common…

  15. Anthropology and Popular Culture: A Case Study.

    ERIC Educational Resources Information Center

    Estes, Jack

    The study of popular culture in the United States is an appropriate anthropological endeavor, as evidenced in a case study of the volcanic eruption of Mt. St. Helens in Oregon. By examining its popular arts, anthropologists gain understanding of the culture and its people. For example, an analysis of reactions to the Mt. St. Helens eruption…

  16. Case Studies in Australian Adult Education.

    ERIC Educational Resources Information Center

    Clark, Ralph J., Ed.; Rooth, S. John, Ed.

    This publication contains the following 24 case studies of adult education in Australia: "NSW Department of Agriculture Home Study Programme" (O'Neill); "Self-Help Adult Education: The University of the Third Age at the Brisbane CAE" (Swindell); "Marriage Enrichment Programme" (D. Kerr, C. Kerr); "Carringbush…

  17. CASE STUDY: DIELDRIN ATTACK IN DALYAN LAGOON

    EPA Science Inventory

    During the first two weeks of December 2005, NATO sponsored an Advanced Study Institute (ASI) in Istanbul, Turkey. Part of this ASI involved a case study of a terrorist attack, where a chemical was assumed to be dumped into Sulunger Lake in Turkey. This chapter documents the re...

  18. Application of Channel Stability Methods - Case Studies

    DTIC Science & Technology

    1994-09-01

    Application for Design Using SAM ...................... 25 Conclusions ..................................... 26 3-Case Study, Puerco River...Stability curves for project design ................. 25 Figure 13. Puerco River study reach ....................... 28 Figure 14. Upstream view of the rock...mile 5.5 31 Figure 18. Realigned channel reach showing sheet pile drop structure - river mile 6.6 ...................... 35 Figure 19. Puerco River

  19. Prader-Willi Disease: A Case Study.

    ERIC Educational Resources Information Center

    Forbus, William R., III

    A case study focuses on the characteristics and physical management of a 15-year-old with Prader-Willi Syndrome, a birth defect associated with hypotonia, insatiable appetite, hypogonadism, central nervous system dysfunction, and abnormal growth and development . A literature review addresses studies dealing with behavior modification of obesity…

  20. Case Studies in Australian Adult Education.

    ERIC Educational Resources Information Center

    Clark, Ralph J., Ed.; Rooth, S. John, Ed.

    This publication contains the following 24 case studies of adult education in Australia: "NSW Department of Agriculture Home Study Programme" (O'Neill); "Self-Help Adult Education: The University of the Third Age at the Brisbane CAE" (Swindell); "Marriage Enrichment Programme" (D. Kerr, C. Kerr); "Carringbush…

  1. Social Studies Project Evaluation: Case Study and Recommendations.

    ERIC Educational Resources Information Center

    Napier, John

    1982-01-01

    Describes the development and application of a model for social studies program evaluations. A case study showing how the model's three-step process was used to evaluate the Improving Citizenship Education Project in Fulton County, Georgia is included. (AM)

  2. Social Studies Project Evaluation: Case Study and Recommendations.

    ERIC Educational Resources Information Center

    Napier, John

    1982-01-01

    Describes the development and application of a model for social studies program evaluations. A case study showing how the model's three-step process was used to evaluate the Improving Citizenship Education Project in Fulton County, Georgia is included. (AM)

  3. Shuttle Case Study Collection Website Development

    NASA Technical Reports Server (NTRS)

    Ransom, Khadijah S.; Johnson, Grace K.

    2012-01-01

    As a continuation from summer 2012, the Shuttle Case Study Collection has been developed using lessons learned documented by NASA engineers, analysts, and contractors. Decades of information related to processing and launching the Space Shuttle is gathered into a single database to provide educators with an alternative means to teach real-world engineering processes. The goal is to provide additional engineering materials that enhance critical thinking, decision making, and problem solving skills. During this second phase of the project, the Shuttle Case Study Collection website was developed. Extensive HTML coding to link downloadable documents, videos, and images was required, as was training to learn NASA's Content Management System (CMS) for website design. As the final stage of the collection development, the website is designed to allow for distribution of information to the public as well as for case study report submissions from other educators online.

  4. Integrating ethics into case study assignments.

    PubMed

    Marshall, Pamela A

    2014-12-01

    I teach an upper-level writing course, Genes, Race, Gender, and Society, designed for Life Science majors, in which I utilize a case study to expose students to ethical ways of thinking. Students first work through the topical case study and then are challenged to rethink their responses through the lenses of ethics, taking into account different ethical frameworks. Students then develop their own case study, integrating ethical components. I want to expose my students to this way of thinking because I see technology being driven by the Jurassic Park phenomenon, "Your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should," and want future physicians grounded in a sense of how their actions relate to the greater good.

  5. Integrating Ethics into Case Study Assignments

    PubMed Central

    Marshall, Pamela A.

    2014-01-01

    I teach an upper-level writing course, Genes, Race, Gender, and Society, designed for Life Science majors, in which I utilize a case study to expose students to ethical ways of thinking. Students first work through the topical case study and then are challenged to rethink their responses through the lenses of ethics, taking into account different ethical frameworks. Students then develop their own case study, integrating ethical components. I want to expose my students to this way of thinking because I see technology being driven by the Jurassic Park phenomenon, “Your scientists were so preoccupied with whether or not they could, they didn’t stop to think if they should,” and want future physicians grounded in a sense of how their actions relate to the greater good. PMID:25574287

  6. The Science Manager's Guide to Case Studies

    SciTech Connect

    Branch, Kristi M.; Peffers, Melissa S.; Ruegg, Rosalie T.; Vallario, Robert W.

    2001-09-24

    This guide takes the science manager through the steps of planning, implementing, validating, communicating, and using case studies. It outlines the major methods of analysis, describing their relative merits and applicability while providing relevant examples and sources of additional information. Well-designed case studies can provide a combination of rich qualitative and quantitative information, offering valuable insights into the nature, outputs, and longer-term impacts of the research. An objective, systematic, and credible approach to the evaluation of U.S. Department of Energy Office of Science programs adds value to the research process and is the subject of this guide.

  7. Remediation case studies: Soil vapor extraction

    SciTech Connect

    1995-03-01

    The purpose of this report is to provide case studies of site cleanup projects utilizing soil vapor extraction (SVE). This volume contains reports on ten projects. Various chlorinated aliphatic contaminants were treated at eight of the locations. One report in this volume describes a project that used SVE followed by bioventing. (Note: this one project, completed at Hill Air Force Base, Site 914, is described in both the SVE and Bioremediation case study volumes.) One of the projects described in the SVE volume used horizontal wells with remote monitoring of equipment.

  8. Tool Version Management Technology: A Case Study.

    DTIC Science & Technology

    1990-11-01

    Technical Report AD-A235 639 CMU/SEI-90-TR-25 Tool Version Management Technology: A Case Study Peter H. Feiler Grace F. Downey November 1990 x 91...00304 90 7 Technical Report CMU/SEI-90-TR-25 ESD-90-TR-226 November 1990 Tool Version Management Technology: A Case Study Peter H. Feiler Grace F. Downey...trademark holder. Table of Contents 1. lntroducton 1 2. The Problem 3 2.1. Tool Version Organization and Selection 3 2.2. Stability of Selected Tool

  9. Case Studies, Make-Your-Case Studies, and Case Stories: A Critique of Case-Study Methodology in Sustainability in Higher Education

    ERIC Educational Resources Information Center

    Corcoran, Peter Blaze; Walker, Kim E.; Wals, Arjen E.J.

    2004-01-01

    In this paper we raise serious concerns about existing case-study research on sustainability in higher education. Our key concern is that the research does not live up to its potential for improving the field of sustainability in higher education. We have argued that case-study research in the field falls short of its promise due to a lack of…

  10. Necrotizing Fasciitis: A Study of 48 Cases.

    PubMed

    Singh, Gurjit; Bharpoda, Pragnesh; Reddy, Raghuveer

    2015-12-01

    Necrotizing fasciitis represents a group of highly lethal infections characterized by rapidly progressing inflammation and necrosis. The aim of the study was to analyze the clinical profile, microbial flora, and predisposing risk factors in patients with necrotizing fasciitis. Lastly, we aimed to formulate a protocol for management of necrotizing fasciitis. Forty-eight cases of necrotizing fasciitis patients who reported to our hospital between April 2007 and September 2009 were included in the study. The commonest predisposing factors were age greater than 50 years (58 % cases) and diabetes mellitus (52 % cases). The commonest site involved was extremity (70.8 %). Majority of infections were polymicrobial (87.5 %). Repeated aggressive debridement was the commonest surgical procedure performed. Early and aggressive surgical debridement, often in multiple sittings, supplemented by appropriate antibiotics and supportive therapy, forms the key to a successful outcome in necrotizing fasciitis.

  11. Case study examples using self-assessment.

    PubMed

    Garstecki, D; Hutton, C L; Nerbonne, M A; Newman, C W; Smoski, W J

    1990-10-01

    The following case studies demonstrate the application of self-assessment techniques. The selection of procedures reported here is not meant to imply necessarily that these procedures are more or less effective or more widely used than other available self-assessment tests, but rather to illustrate the various purposes for which self-assessment tools may be employed. Case 1 illustrates the contribution of data obtained from the Hearing Performance Inventory (Giolas, Owens, Lamb, & Shubert, 1979) in the management and counseling of a severely hearing impaired adult. Case 2 involves the use of the Hearing Problem Inventory developed by Hutton in Atlanta (HPI-A, Hutton, 1987). Application of the Self-Assessment of Communication (SAC) and Significant Other Assessment of Communication (SOAC) (Schow and Nerbonne, 1982) is shown in Case 3, whereas Case 4 demonstrates the usefulness of the Hearing Handicap Inventory for the Elderly (HHIE, Ventry and Weinstein, 1982). Both the SAC/SOAC and HHIE batteries involve problem cases associated with hearing aid fitting and assessment of benefit. The final illustration (Case 5) is a report on the Children's Auditory Processing Performance Scale (CHAPPS), a new questionnaire developed by Smoski, Brunt, and Tannahill/ISHA (1987) for assessing parent's judgment of children's listening abilities (Appendix). The versatility of self-assessment applications across a broad assortment of impairment levels, age groups, and clinical settings is demonstrated in these cases. Hopefully the reader will see more clearly the application and value of these and other non-audiometric techniques and will be motivated to increase the use of self-assessment tools in the individual work setting.

  12. Case Series Study of Invasive Pulmonary Aspergillosis.

    PubMed

    Aller-García, Ana I; Castro-Méndez, Carmen; Alastruey-Izquierdo, Ana; Marín-Martínez, Elena M; Breval, Ismail Zakariya-Yousef; Couto-Caro, Carmen; López-Marín, Juan C; Peña-Griñán, Nicolás; Ruiz de Pipaon, Maite; Romero-Mejías, Ana M; Martín-Mazuelos, Estrella

    2016-12-02

    Diagnosis of invasive pulmonary aspergillosis (IPA) is challenging. The objective of the study was to assess the value of microbiological tests to the diagnosis of IPA in the absence of non-specific radiological data. A retrospective study of 23 patients with suspicion of IPA and positivity of some microbiological diagnostic tests was performed. These tests included conventional microbiological culture, detection of Aspergillus galactomannan (GM) antigen and in some patients (1 → 3)-β-D-glucan (BDG) and Aspergillus fumigatus DNA using the LightCycler(®) SeptiFast test. In 10 patients with hematological malignancy, 6 cases were considered 'probable' and 4 'non-classifiable.' In 8 patients with chronic lung disease, 7 cases were classified as 'probable' and 1 as 'proven,' and in 5 patients with prolonged ICU stay (>7 days), there were 2 'proven' cases, 2 'non-classifiable' and 1 putative case. Microbiological culture was positive in 17 cases and 18 Aspergillus spp. were isolated (one mixed culture). A. fumigatus was the most frequent (44.4%) followed by A. tubingensis. The Aspergillus galactomannan (GM) antigen assay was positive in 21 cases (91.3%). The GM antigen and the (1 → 3)-β-D-glucan (BDG) assays were both performed in 12 cases (52.2%), being positive in 9. The SeptiFast test was performed in 7 patients, being positive in 4. In patients with non-classifiable pulmonary aspergillosis and one or more positive microbiological tests, radiological criteria may not be considered a limiting factor for the diagnosis of IPA.

  13. ESL and Digital Video Integration: Case Studies

    ERIC Educational Resources Information Center

    Li, J., Ed.; Gromik, N., Ed.; Edwards, N., Ed.

    2013-01-01

    It should come as no surprise that digital video technology is of particular interest to English language learners; students are drawn to its visual appeal and vibrant creative potential. The seven original case studies in this book demonstrate how video can be an effective and powerful tool to create fluid, fun, interactive, and collaborative…

  14. Case Studies of Altruistic Persons: AERA Roundtable.

    ERIC Educational Resources Information Center

    Stephens, William N.

    This document presents information from a body of research called Lives of Service, a collection of case studies of 32 altruistic adults. It begins with a review of the research on altruism, service orientation, giving, helpfulness, social responsibility, and voluntarism. Research on altruism in psychology and in other disciplines is included,…

  15. Acoustical case studies of three green buildings

    NASA Astrophysics Data System (ADS)

    Siebein, Gary; Lilkendey, Robert; Skorski, Stephen

    2005-04-01

    Case studies of 3 green buildings with LEED certifications that required extensive acoustical retrofit work to become satisfactory work environments for their intended user groups will be used to define areas where green building design concepts and acoustical design concepts require reconciliation. Case study 1 is an office and conference center for a city environmental education agency. Large open spaces intended to collect daylight through clerestory windows provided large, reverberant volumes with few acoustic finishes that rendered them unsuitable as open office space and a conference room/auditorium. Case Study 2 describes one of the first gold LEED buildings in the southeast whose primary design concepts were so narrowly focused on thermal and lighting issues that they often worked directly against basic acoustical requirements resulting in sound levels of NC 50-55 in classrooms and faculty offices, crosstalk between classrooms and poor room acoustics. Case study 3 is an environmental education and conference center with open public areas, very high ceilings, and all reflective surfaces made from wood and other environmentally friendly materials that result in excessive loudness when the building is used by the numbers of people which it was intended to serve.

  16. Interdisciplinary Student Teams Projects: A Case Study

    ERIC Educational Resources Information Center

    Kruck, S. E.; Teer, Faye P.

    2009-01-01

    In today's organizations team work has become an integral part of the day-to-day routine. For this reason, University professors are including group projects in many courses. In such group assessments, we advocate the use of interdisciplinary teams, where possible. As a case study, we report an interdisciplinary group technical project with…

  17. Marietta Celebration of Unity Case Study.

    ERIC Educational Resources Information Center

    Philbin, Meg; Phillips, Rebecca

    This case study concerns the forming of a Marietta, Ohio unity committee, entitled Citizens for Social and Racial Justice, in response to the local Ku Klux Klan's (KKK) request for a parade permit in order to demonstrate against blacks in this city. Marietta, the county seat of Washington County, Ohio, has a population composed of both white and…

  18. A CASE STUDY OF ENVIRONMENTAL DATA MANAGEMENT

    EPA Science Inventory

    In order to support our ongoing research in watershed ecology and global climate change, we gather and analyze environmental data from several government agencies. This case study demonstrates a researcher’s approach to accessing, organizing, and using intersectoral data. T...

  19. A Case Study in Learning to Unlearn

    ERIC Educational Resources Information Center

    Downes, Martin; Grummell, Bernie; Murphy, Conor; Ryan, Anne

    2015-01-01

    In this case study, Irish academics reflect on our involvement in a project--Transformative Engagement Network (TEN). This project aims to transform the nature of the engagement between the various stakeholders impacted by or concerned with climate change and to insert the voice and concerns of the most vulnerable food producers into climate…

  20. Successful Fundraising: Case Studies of Academic Libraries.

    ERIC Educational Resources Information Center

    Butler, Meredith A., Ed.

    The primary purpose of this book it to assist library directors and those who want to become fundraisers for libraries to learn more about fundraising and find answers to their questions. The 12 case studies presented in this book address issues of building a major gift program; developing library capital campaigns; competing for National…

  1. Comparative Environmental Threat Analysis: Three Case Studies.

    ERIC Educational Resources Information Center

    Latour, J. B.; Reiling, R.

    1994-01-01

    Reviews how carrying capacity for different environmental problems is operationalized. Discusses whether it is possible to compare threats, using the exceeding of carrying capacity as a yardstick. Points out problems in comparative threat analysis using three case studies: threats to European groundwater resources, threats to ecosystems in Europe,…

  2. Nanomaterial Case Study: Nanoscale Silver in Disinfectant ...

    EPA Pesticide Factsheets

    EPA announced the release of the final report, Nanomaterial Case Study: Nanoscale Silver in Disinfectant Spray. This report represents a case study of engineered nanoscale silver (nano-Ag), focusing on the specific example of nano-Ag as possibly used in disinfectant sprays. This case study is organized around the comprehensive environmental assessment (CEA) framework, which structures available information pertaining to the product life cycle, environmental transport and fate, exposure-dose in receptors (i.e., humans, ecological populations, and the environment), and potential impacts in these receptors. The document does not draw conclusions about potential risks. Instead, it is intended to be used as part of a process to identify what is known and unknown about nano-Ag in a selected application. In turn, the external review draft of the document provided a starting point to identify and prioritize possible research directions to support future assessments of nanomaterials. The information presented in the case study and the questions raised in this document are a foundation for a process to determine priorities among various research topics and directions. After that process has been completed, a final chapter will be added to this document to summarize highlights from preceding chapters and the major research issues that have emerged.

  3. Physics Courses--Some Suggested Case Studies

    ERIC Educational Resources Information Center

    Swetman, T. P.

    1972-01-01

    To communicate the relevance and excitement of science activity to students, the use of more imaginative, and even openly speculative, case studies in physics courses is suggested. Some useful examples are Magnetic Monopoles, Constants, Black Holes, Antimatter, Zero Mass Particles, Tachyons, and the Bootstrap Hypothesis. (DF)

  4. Grade One: Math Computation. Case Study #1

    ERIC Educational Resources Information Center

    Powell, Sarah R.; Seethaler, Pamela M.

    2007-01-01

    The purpose of this case study is to highlight the integral role that progress monitoring (PM) plays throughout any Response to Intervention (RTI) process. This example uses a three-level, responsiveness-to-intervention (RTI) method for identifying students with learning difficulties. Using a fictional first-grade classroom as the setting for…

  5. Case Studies of the AIA Movement.

    ERIC Educational Resources Information Center

    Ewbank, H. L.

    At least 17 university faculty members have been the direct objects of unfavorable public commentary by the conservative organization Accuracy in Academia, Inc (AIA). Two case studies that have received much attention involve two political science professors: Dr. Terry Anderson of Texas A & M University, and Dr. Mark Reader of Arizona State…

  6. Changing the Library Brand: A Case Study

    ERIC Educational Resources Information Center

    Wynne, Ben; Dixon, Simon; Donohue, Neil; Rowlands, Ian

    2016-01-01

    This article outlines some of the opportunities and challenges of changing what the library "brand" means to academic and professional services staff in the rapidly changing environment of UK higher education, taking the University of Leicester as a case study. It makes a practitioner contribution to the growing body of evidence of how…

  7. Delivering Online Examinations: A Case Study

    ERIC Educational Resources Information Center

    Howarth, Jason; Messing, John; Altas, Irfan

    2004-01-01

    This paper represents a brief case study of delivering online examinations to a worldwide audience. These examinations are delivered in partnership with a commercial online testing company as part of the Industry Master's degree at Charles Sturt University (CSU). The Industry Master's degree is an academic program for students currently employed…

  8. Phonological Precedence in Dyslexia: A Case Study

    ERIC Educational Resources Information Center

    Schneider-Zioga, Patricia

    2012-01-01

    Developmental dyslexia is believed to involve a phonological deficit of which the exact properties have not been clearly established. This article presents the findings of a longitudinal case study that suggest that, at least for some people with dyslexia, the fundamental problem involves a disturbance of temporal-spatial ordering abilities. A…

  9. SRM filament wound case resin characterization studies

    NASA Technical Reports Server (NTRS)

    Chou, L. W.

    1985-01-01

    The amine cured epoxy wet winding resin used in fabrication of the SRM filament wound case is analyzed. High pressure liquid chromatography (HPSC) is utilized extensively to study lot-to-lot variation in both resin and curing agent. The validity of quantitative hplc methodology currently under development in-process resin/catalyst assay is assessed.

  10. Simulations & Case Studies. [SITE 2002 Section].

    ERIC Educational Resources Information Center

    Seymour, Cathy R., Ed.

    This document contains the following papers on simulations and case studies from the SITE (Society for Information Technology & Teacher Education) 2002 conference: "3-D Virtual Classroom Technology" (Kimberly Arseneau Miller, Angela Glod); "Simulated Lesson Design Studios" (Willis Copeland); "Lights, Camera, Integration: Presentation Programs and…

  11. Fraternization in Accounting Firms: A Case Study

    ERIC Educational Resources Information Center

    Heinze, Tim; Kizirian, Tim; Leese, Wallace

    2004-01-01

    This case study sheds light on how to avoid risks caused by manager-subordinate dating relationships (fraternization) such as employee misunderstandings, retaliation charges, favoritism complaints, wrongful termination lawsuits, and sexual harassment lawsuits, as well as associated ethical risks. Risk avoidance can be accomplished through a better…

  12. A Case Study of Horizontal Teacher Evaluation.

    ERIC Educational Resources Information Center

    Johnson, Trav D.

    Horizontal teacher evaluation increases understanding of teaching through the critical examination of educational goals and classroom practices. This examination includes teachers' classroom observations of one another coupled with in-depth teacher conversations or dialogue about teaching aims and practices. A qualitative case study of a…

  13. Library Virtual Tours: A Case Study

    ERIC Educational Resources Information Center

    Ashmore, Beth; Grogg, Jill E.

    2004-01-01

    Virtual tours delivered via the Web have become a common tool for both instruction and outreach. This article is a case study of the creation of a virtual tour for a university library and is intended to provide others interested in creating a virtual tour of their library the opportunity to learn from the mistakes and successes of fellow…

  14. Firefighter Workplace Learning: An Exploratory Case Study

    ERIC Educational Resources Information Center

    Tracey, Edward A.

    2014-01-01

    Despite there being a significant amount of research investigating workplace learning, research exploring firefighter workplace learning is almost nonexistent. The purpose of this qualitative multi-case study was to explore how firefighters conceptualize, report, and practice workplace learning. The researcher also investigated how firefighters…

  15. A Case Study in Learning to Unlearn

    ERIC Educational Resources Information Center

    Downes, Martin; Grummell, Bernie; Murphy, Conor; Ryan, Anne

    2015-01-01

    In this case study, Irish academics reflect on our involvement in a project--Transformative Engagement Network (TEN). This project aims to transform the nature of the engagement between the various stakeholders impacted by or concerned with climate change and to insert the voice and concerns of the most vulnerable food producers into climate…

  16. A Case Study of Online Collaborative Learning

    ERIC Educational Resources Information Center

    Thompson, Ling; Ku, Heng-Yu

    2006-01-01

    This case study investigated 12 graduate students' online collaborative experiences and attitudes in an instructional design course. The instructor divided students into 4 groups based on their academic backgrounds. Content analysis of asynchronous group discussion board messages was used to measure degrees of collaboration of each group in terms…

  17. Case Study of Home-School Visits

    ERIC Educational Resources Information Center

    Aguerrebere, Yolanda

    2009-01-01

    This case study evaluated one site of a California teacher home visit program. Home visits have been an important means of connecting families and schooling. In 1999, California inaugurated a statewide home visit program to promote effective partnership between home and school for low-achieving schools. At this site, families in 3 kindergarten…

  18. A Case Study in Acoustical Design.

    ERIC Educational Resources Information Center

    Ledford, Bruce R.; Brown, John A.

    1992-01-01

    Addresses concerns of both facilities planners and instructional designers in planning for the audio component of group presentations. Factors in the architectural design of enclosures for the reproduction of sound are described, including frequency, amplitude, and reverberation; and a case study for creating an acceptable enclosure is presented.…

  19. Case Study of Sabrina and Responses.

    ERIC Educational Resources Information Center

    Gourgey, Annette F.; Davis, Kevin; Lane, Linda; Smith, Lonna

    1997-01-01

    Presents a case study of an adult student preparing for her first year of college through a writing course and work in a writing workshop. Explains complicating circumstances in the student's life. Presents four professional responses commenting on the difficulties of the situation and possible solutions. (TB)

  20. LCA – Unique and Controversial Case Studies

    EPA Science Inventory

    This session will focus on case studies and applications that have a unique or controversial aspect. Some of the most recent topics that seem to have significant interest include: LCA-based product declarations, LCA-based standards, LCA-based labels, alternative energy, agricul...

  1. Framing in the Field: A Case Study

    ERIC Educational Resources Information Center

    Benjamin, Diane

    2009-01-01

    Strategic Frame Analysis can inform the daily practice of policy advocates by bringing an evidence-based communications approach to their work. This case study of FrameWorks' decade-long association with the national Kids Count Network shares stories from advocates who are transforming their communications strategies, resulting in more effective…

  2. Peasant Politics in Chile: A Case Study.

    ERIC Educational Resources Information Center

    Petras, James; Zemelman, Hugo

    The major purpose of this paper is to describe and analyze the formation of a new structure of authority and the process of change from capitalist oligarchy to pluralistic collectivism--an aspect of political development. A case study is based upon interviews with 12 informants who were involved in the seizure of a large farm from its owner. The…

  3. Training Needs Assessment: A Case Study.

    ERIC Educational Resources Information Center

    Horton, George R. "Dick"

    1984-01-01

    Presents a case study and findings of a training needs assessment which was conducted to determine the training implications of implementing an integral system of quality assurance at the Fridley, Minnesota, plant of Onan Corporation, a manufacturer of electric generator sets and switch gear. (MBR)

  4. Biliteracy, Spelling, and Writing: A Case Study

    ERIC Educational Resources Information Center

    Midgette, Ekaterina; Philippakos, Zoi A.

    2016-01-01

    The overall purpose of this case study is to examine biliteracy and its effects on a young child's orthographic and writing growth. The analysis of the kindergartener's spelling development and compositional growth in reference to both language systems indicates that biliteracy had a positive effect on the student's acquisition of English…

  5. Youth Development: A Case Study from Honduras.

    ERIC Educational Resources Information Center

    Boll, Jay

    This case study documents the experiences of a Peace Corps volunteer who worked as a Youth Development volunteer with disadvantaged institutionalized youth in Honduras. Youth Development volunteers provide direct services in the areas of vocational education, recreational programming, informal education, and counseling. Many are assigned to…

  6. Collaboration for Inservice Education: Case Studies.

    ERIC Educational Resources Information Center

    Pipes, Lana, Ed.

    The seven case studies presented in this publication are representative of successful programs for the professional development of practicing teachers. They were selected to give a sampling of the variety in programs underway across the country. Two describe teacher centers jointly operated by a school system and a university; another, a Teacher…

  7. Change and Its Consequences: A Case Study.

    ERIC Educational Resources Information Center

    Pierce, Susan Resneck

    2000-01-01

    The University of Puget Sound, Washington, represents a case study in institutional change (and its consequences) through innovative planning and bold initiatives. Over a decade of decisive actions that included ongoing conversation and communication, with all the fallout that entailed, has refashioned the institution into a stronger undergraduate…

  8. Climate wise case study compendium: Report 1

    SciTech Connect

    1997-02-01

    This case study compendium is one of several Climate Wise tools available to help interested companies identify cost-effective options. Climate Wise, a private-public partnership program, is a key Federal initiative to return greenhouse gas emissions to 1990 levels by 2000.

  9. Tachycardia During Resistance Exercise: A Case Study.

    ERIC Educational Resources Information Center

    Fry, Andrew C.; Parks, Michael J.

    2001-01-01

    This case study examined a weight-trained (WT) male who had an unusually high heart rate response to heavy resistance exercise and self-administered anabolic androgenic steroids as an ergogenic aid to training. The subject was compared to 18 other WT people. His tachycardia response occurred only in the presence of a pressure load and not with a…

  10. Framing in the Field: A Case Study

    ERIC Educational Resources Information Center

    Benjamin, Diane

    2009-01-01

    Strategic Frame Analysis can inform the daily practice of policy advocates by bringing an evidence-based communications approach to their work. This case study of FrameWorks' decade-long association with the national Kids Count Network shares stories from advocates who are transforming their communications strategies, resulting in more effective…

  11. Tachycardia During Resistance Exercise: A Case Study.

    ERIC Educational Resources Information Center

    Fry, Andrew C.; Parks, Michael J.

    2001-01-01

    This case study examined a weight-trained (WT) male who had an unusually high heart rate response to heavy resistance exercise and self-administered anabolic androgenic steroids as an ergogenic aid to training. The subject was compared to 18 other WT people. His tachycardia response occurred only in the presence of a pressure load and not with a…

  12. NACASETAC BAY: AN INTERACTIVE CASE STUDY

    EPA Science Inventory

    This interactive case study or "game" was created to provide a "hands on" experience in the application of a weight of evidence approach to sediment assessment. The game proceeds in two phases. In each phase the players work together as a group. A scenario is presented, and the g...

  13. Teaching Business Intelligence through Case Studies

    ERIC Educational Resources Information Center

    Pomykalski, James J.

    2015-01-01

    In teaching business students about the application and implementation of technology, especially involving business intelligence, it is important to discover that project success in enterprise systems development efforts often depend on the non-technological problems or issues. The focus of this paper will be on the use of multiple case studies in…

  14. Phonological Precedence in Dyslexia: A Case Study

    ERIC Educational Resources Information Center

    Schneider-Zioga, Patricia

    2012-01-01

    Developmental dyslexia is believed to involve a phonological deficit of which the exact properties have not been clearly established. This article presents the findings of a longitudinal case study that suggest that, at least for some people with dyslexia, the fundamental problem involves a disturbance of temporal-spatial ordering abilities. A…

  15. Teaching the Holocaust through Case Study

    ERIC Educational Resources Information Center

    Misco, Thomas

    2009-01-01

    This article responds to the curricular challenges teachers face with Holocaust education, including cursory treatments and a lack of focus on individual experiences. First, the author argues for a case-study approach to help students reengage concrete and complex features of the Holocaust as a point of departure for subsequent inquiry. In…

  16. Advanced supplier partnership practices: a case study.

    PubMed

    Williams, B R

    2000-05-01

    This article describes how a supplier partnership was set up to avoid the typical purchasing relationship--price being inversely proportional to quantity and having the purchaser take all the risk of product obsolescence. The case study also describes how rate-based replenishment replaced time-based delivery, and how all these advantages were achieved at reduced administrative costs.

  17. New Lives: Some Case Studies in Minamata.

    ERIC Educational Resources Information Center

    Tsurumi, Kazuko

    Three case studies of young Japanese adults who fell ill with Minamata disease (a form of methyl-mercury poisoning) are presented and the adjustment of the individuals to the disease is analyzed in terms of a model of creativity. The model distinguishes three types of creativity: identificational (in which one identifies with old ideas and…

  18. Career Development of Black Males: Case Studies.

    ERIC Educational Resources Information Center

    Chung, Y. Barry; Baskin, Monica L.; Case, Andrew B.

    1999-01-01

    Case studies of six black males explored background, school and work experiences, and career issues. These themes emerged: fathers' financial support and role modeling influenced career development; other male role models affected aspirations; social, especially parental support for education and careers influenced decision making; and racism…

  19. Learning Machine Learning: A Case Study

    ERIC Educational Resources Information Center

    Lavesson, N.

    2010-01-01

    This correspondence reports on a case study conducted in the Master's-level Machine Learning (ML) course at Blekinge Institute of Technology, Sweden. The students participated in a self-assessment test and a diagnostic test of prerequisite subjects, and their results on these tests are correlated with their achievement of the course's learning…

  20. Classroom Discipline: Case Studies and Viewpoints.

    ERIC Educational Resources Information Center

    Kohut, Sylvester, Jr.; Range, Dale G.

    This guide is designed for both preservice and inservice teachers concerned about classroom management and discipline as they relate to learning. The case studies and illustrations included are actual real-life situations observed, recorded, documented, and contributed by teachers, administrators, and paraprofessionals throughout the country in…

  1. Case Study of Home-School Visits

    ERIC Educational Resources Information Center

    Aguerrebere, Yolanda

    2009-01-01

    This case study evaluated one site of a California teacher home visit program. Home visits have been an important means of connecting families and schooling. In 1999, California inaugurated a statewide home visit program to promote effective partnership between home and school for low-achieving schools. At this site, families in 3 kindergarten…

  2. WMOST v2 Case Study: Monponsett Ponds

    EPA Science Inventory

    This webinar presents an overview of the preliminary results of a case study application of EPA's Watershed Management Optimization Support Tool v2 (WMOST) for stakeholders in the Monponsett Ponds Watershed Workgroup. Monponsett Ponds is a large water system consisting of two ba...

  3. Semantically Redundant Language--A Case Study

    ERIC Educational Resources Information Center

    Rizza, Chris

    2009-01-01

    In this article, I discuss the concept of semantically redundant language through a case study of the Te Rauparaha Maori haka. I suggest that current linguistic theories cannot give a full account of ritualized speech events, of which the haka is an example, as these theories are based on a traditional dyadic model of interaction involving a…

  4. Sustainability in Housing: A Curriculum Case Study.

    ERIC Educational Resources Information Center

    Parrott, Kathleen; Emmel, Joann M.

    2001-01-01

    Explores the influence of environmental issues on the field of housing, from the perspective of sustainable housing. Presents a case study of the development of a college course to address these issues by integrating energy management, air quality, water quality, and waste management. (Author)

  5. Firefighter Workplace Learning: An Exploratory Case Study

    ERIC Educational Resources Information Center

    Tracey, Edward A.

    2014-01-01

    Despite there being a significant amount of research investigating workplace learning, research exploring firefighter workplace learning is almost nonexistent. The purpose of this qualitative multi-case study was to explore how firefighters conceptualize, report, and practice workplace learning. The researcher also investigated how firefighters…

  6. It's Not Funny: A Case Study

    ERIC Educational Resources Information Center

    Méndez-Morse, Sylvia

    2015-01-01

    This case study may be used with personnel supervision, school law, and other school leadership courses. It describes the behavior and actions of one teacher toward another. Student discussions can focus on supervision, workplace mobbing, workplace bullying, as well as sexual harassment. Students should focus on a school leader's role in such…

  7. Three Case Studies in Green Cleaning

    ERIC Educational Resources Information Center

    State Education Standard, 2012

    2012-01-01

    This article presents case studies from three districts implementing green cleaning. In 2008, Missouri passed legislation requiring state education officials to convene a committee of stakeholders with the purpose of developing green cleaning guidelines and specifications for schools. The guide, published by the Department of Elementary and…

  8. Internationalizing the California State University: Case Studies.

    ERIC Educational Resources Information Center

    Sutter Richard L., Ed.; And Others

    The 18 case studies in this volume represent a sample of the internationalization activities of the California State University system. Part 1 presents five papers on organizing for international education: "Internationalization of CSULB [California State University Long Beach]" by Dorothy Abrahamse et al.; "Institutional…

  9. New Case Studies of Citizen Action

    ERIC Educational Resources Information Center

    Tanner, Thomas

    1977-01-01

    Describes a six-unit case study curriculum package designed for secondary and college-level courses relating to environmental education. The units deal with nuclear power, stream channelization, a river dam project, overgrazing of public lands, agribusiness versus the family farm, and swamp preservation. (Author/DB)

  10. INNOVATIVE CLEAN TECHNOLOGIES CASE STUDIES - PROJECT REPORT

    EPA Science Inventory

    The innovative Clean Technologies Case Studies contained herein are the products of the "Pollution Prevention by and for Small Business" Program (P2SB) The P2SB was an outreach program directed to small businesses that had developed innovative concepts for pollution prevention i...

  11. Effective Schools: Three Case Studies of Excellence.

    ERIC Educational Resources Information Center

    Gilchrist, Robert S.

    This document presents case studies of three excellent schools (one each at the elementary school, middle school, and high school levels), and describes the methods by which these schools achieved recognition in order to offer suggestions for community members working to improve their own schools. The book is organized into six chapters. The first…

  12. Teaching the Holocaust through Case Study

    ERIC Educational Resources Information Center

    Misco, Thomas

    2009-01-01

    This article responds to the curricular challenges teachers face with Holocaust education, including cursory treatments and a lack of focus on individual experiences. First, the author argues for a case-study approach to help students reengage concrete and complex features of the Holocaust as a point of departure for subsequent inquiry. In…

  13. It's Not Funny: A Case Study

    ERIC Educational Resources Information Center

    Méndez-Morse, Sylvia

    2015-01-01

    This case study may be used with personnel supervision, school law, and other school leadership courses. It describes the behavior and actions of one teacher toward another. Student discussions can focus on supervision, workplace mobbing, workplace bullying, as well as sexual harassment. Students should focus on a school leader's role in such…

  14. Gifted Teenagers with Problems: Three Case Studies.

    ERIC Educational Resources Information Center

    Monaco, Theresa; Goodner, Jane

    Case studies are presented of three gifted students, indicating the social and academic problems which are standing in the way of their potential development. The students include a Vietnamese-American ninth-grade girl who has difficulty with English and does not feel accepted by other students, an underachieving seventh grade boy who speaks out…

  15. Library Virtual Tours: A Case Study

    ERIC Educational Resources Information Center

    Ashmore, Beth; Grogg, Jill E.

    2004-01-01

    Virtual tours delivered via the Web have become a common tool for both instruction and outreach. This article is a case study of the creation of a virtual tour for a university library and is intended to provide others interested in creating a virtual tour of their library the opportunity to learn from the mistakes and successes of fellow…

  16. Changing the Library Brand: A Case Study

    ERIC Educational Resources Information Center

    Wynne, Ben; Dixon, Simon; Donohue, Neil; Rowlands, Ian

    2016-01-01

    This article outlines some of the opportunities and challenges of changing what the library "brand" means to academic and professional services staff in the rapidly changing environment of UK higher education, taking the University of Leicester as a case study. It makes a practitioner contribution to the growing body of evidence of how…

  17. WMOST v2 Case Study: Monponsett Ponds

    EPA Science Inventory

    This webinar presents an overview of the preliminary results of a case study application of EPA's Watershed Management Optimization Support Tool v2 (WMOST) for stakeholders in the Monponsett Ponds Watershed Workgroup. Monponsett Ponds is a large water system consisting of two ba...

  18. Workplace Education Initiative: Case Studies and Observations.

    ERIC Educational Resources Information Center

    Astrein, Bruce; And Others

    Seven workplace education projects funded in the first year of the Massachusetts Workplace Education Initiative are reported. This report includes both general observations and specific information in case studies of the projects. Overall information is provided on students served, the importance of partnerships, the emphasis on…

  19. Interactive Videodisc Case Studies for Medical Education

    PubMed Central

    Harless, William G.; Zier, Marcia A.; Duncan, Robert C.

    1986-01-01

    The TIME Project of the Lister Hill National Center for Biomedical Communications is using interactive videodisc, microprocessor and voice recognition technology to create patient simulations for use in the training of medical students. These interactive case studies embody dramatic, lifelike portrayals of the social and medical conditions of a patient and allow uncued, verbal intervention by the student for independent clinical decisions.

  20. Identifying the Visually Gifted: A Case Study.

    ERIC Educational Resources Information Center

    Fredette, Barbara W.; Hunter, Adrienne

    The case study of a visually gifted 8-year-old child illustrates the problems that may be encountered in determining giftedness that is manifested largely through visual processes and products. The child's intelligence quotient was just below that required for admission to the gifted program in his school. Retesting with the complete number of…

  1. Learning Machine Learning: A Case Study

    ERIC Educational Resources Information Center

    Lavesson, N.

    2010-01-01

    This correspondence reports on a case study conducted in the Master's-level Machine Learning (ML) course at Blekinge Institute of Technology, Sweden. The students participated in a self-assessment test and a diagnostic test of prerequisite subjects, and their results on these tests are correlated with their achievement of the course's learning…

  2. Influences on the Usefulness of Case Studies.

    ERIC Educational Resources Information Center

    Wilson, Steve

    Case studies are a respected form of research. They are seen as useful because they deal with information in a complex, holistic, process oriented, particularistic way that mirrors the reality of life in school settings. Several forces impinge on their usefulness in helping others to learn from past experiences and thus improve their own…

  3. Inside Outdoor Education: A Case Study.

    ERIC Educational Resources Information Center

    Raffan, James

    This case study examines the teaching practices of Alan Woods, (pseudonym) who teaches elementary students in an outdoor education program. It describes a typical teaching day, including Alan's comments about his work and important aspects of being an outdoor educator. Alan stated that he used recitation questioning (asking students to recite…

  4. The Interim Superintendent: A Case Study

    ERIC Educational Resources Information Center

    Bigham, Gary; Nix, Susan J.

    2011-01-01

    Considering the vitally important role that the superintendent plays in the overall functioning and wellbeing of any school district, the filling of that position should never be done in haste. Due to the importance of this process and the time it requires, school districts often employ an interim superintendent. In this single case study, one…

  5. Comparative Environmental Threat Analysis: Three Case Studies.

    ERIC Educational Resources Information Center

    Latour, J. B.; Reiling, R.

    1994-01-01

    Reviews how carrying capacity for different environmental problems is operationalized. Discusses whether it is possible to compare threats, using the exceeding of carrying capacity as a yardstick. Points out problems in comparative threat analysis using three case studies: threats to European groundwater resources, threats to ecosystems in Europe,…

  6. ESL and Digital Video Integration: Case Studies

    ERIC Educational Resources Information Center

    Li, J., Ed.; Gromik, N., Ed.; Edwards, N., Ed.

    2013-01-01

    It should come as no surprise that digital video technology is of particular interest to English language learners; students are drawn to its visual appeal and vibrant creative potential. The seven original case studies in this book demonstrate how video can be an effective and powerful tool to create fluid, fun, interactive, and collaborative…

  7. Williams 'elfin facies' Syndrome: A Case Study.

    ERIC Educational Resources Information Center

    Swartz, Stanley L.

    A review of the research literature related to Williams 'elfin facies' Syndrome (a condition including mental retardation and cardiac anomalies), a case study, and the results of an early intervention program, are reported. The medical aspects of the syndrome have been reported with sufficient consistency for a profile to emerge. Psychological…

  8. Making Mentoring Stick: A Case Study

    ERIC Educational Resources Information Center

    Karallis, Takis; Sandelands, Eric

    2009-01-01

    Purpose: This paper seeks to provide a case study of the mentoring process within Kentz Engineers & Constructors. Design/methodology/approach: The paper reflects the experiences of those leading the mentoring process within Kentz with insights extracted from a process of action, reflection and live experimentation. Findings: The paper…

  9. Physics Courses--Some Suggested Case Studies

    ERIC Educational Resources Information Center

    Swetman, T. P.

    1972-01-01

    To communicate the relevance and excitement of science activity to students, the use of more imaginative, and even openly speculative, case studies in physics courses is suggested. Some useful examples are Magnetic Monopoles, Constants, Black Holes, Antimatter, Zero Mass Particles, Tachyons, and the Bootstrap Hypothesis. (DF)

  10. New Case Studies of Citizen Action

    ERIC Educational Resources Information Center

    Tanner, Thomas

    1977-01-01

    Describes a six-unit case study curriculum package designed for secondary and college-level courses relating to environmental education. The units deal with nuclear power, stream channelization, a river dam project, overgrazing of public lands, agribusiness versus the family farm, and swamp preservation. (Author/DB)

  11. Nanomaterial Case Studies: Nanoscale Titanium Dioxide ...

    EPA Pesticide Factsheets

    This draft document presents two case studies of nanoscale titanium dioxide (nano-TiO2) used (1) to remove arsenic from drinking water and (2) as an active ingredient in topical sunscreen. The draft case studies are organized around a comprehensive environmental assessment approach that combines a product life cycle framework with the risk assessment paradigm. The document does not draw conclusions about potential risks. Rather, the case studies are intended to help identify what needs to be known in order to conduct a comprehensive environmental assessment of the potential risks related to nano-TiO2. This draft document is part of a process that will inform the development of EPA’s research strategy to support nanomaterial risk assessments. The complex properties of various nanomaterials make evaluating them in the abstract or with generalizations difficult if not impossible. Thus, this document focuses on two specific uses of nano-TiO2, as a drinking water treatment and as topical sunscreen. These case studies do not represent completed or even preliminary assessments; rather, they present the structure for identifying and prioritizing research needed to support future assessments.

  12. Value for Money Case Studies. Mendip Papers.

    ERIC Educational Resources Information Center

    Kedney, Bob, Ed.

    In response to a shift from the management of curriculum to the management of scarce resources to deliver a changing curriculum, this paper brings together three "value for money" case studies in college administration. The papers identify three levels of activity, ranging from the one-time opportunity for good housekeeping through…

  13. Aerospace Mechanisms and Tribology Technology: Case Studies

    NASA Technical Reports Server (NTRS)

    Miyoshi, Kazuhisa

    1999-01-01

    This chapter focuses attention on tribology technology practice related to vacuum tribology and space tribology. Two case studies describe aspects of real problems in sufficient detail for the engineer and the scientist to understand the tribological situations and the failures. The nature of the problems is analyzed and the range of potential solutions is evaluated. Courses of action are recommended.

  14. Aerospace Mechanisms and Tribology Technology: Case Study

    NASA Technical Reports Server (NTRS)

    Miyoshi, K.

    1999-01-01

    This paper focuses attention on tribology technology practice related to vacuum tribology. A case study describes an aspect of a real problem in sufficient detail for the engineer and scientist to understand the tribological situation and the failure. The nature of the problem is analyzed and the tribological properties are examined.

  15. Making Mentoring Stick: A Case Study

    ERIC Educational Resources Information Center

    Karallis, Takis; Sandelands, Eric

    2009-01-01

    Purpose: This paper seeks to provide a case study of the mentoring process within Kentz Engineers & Constructors. Design/methodology/approach: The paper reflects the experiences of those leading the mentoring process within Kentz with insights extracted from a process of action, reflection and live experimentation. Findings: The paper…

  16. A CASE STUDY OF ENVIRONMENTAL DATA MANAGEMENT

    EPA Science Inventory

    In order to support our ongoing research in watershed ecology and global climate change, we gather and analyze environmental data from several government agencies. This case study demonstrates a researcher’s approach to accessing, organizing, and using intersectoral data. T...

  17. Performance Support Case Studies from IBM.

    ERIC Educational Resources Information Center

    Duke-Moran, Celia; Swope, Ginger; Morariu, Janis; deKam, Peter

    1999-01-01

    Presents two case studies that show how IBM addressed performance support solutions and electronic learning. The first developed a performance support and expert coaching solution; the second applied performance support to reducing implementation time and total cost of ownership of enterprise resource planning systems. (Author/LRW)

  18. Student Attitudes toward Reading: A Case Study

    ERIC Educational Resources Information Center

    Seitz, Lindsey

    2010-01-01

    Over the last 15 years, researchers have become increasingly interested in children's motivation to read. Because reading is an exigent activity that often involves choice, motivation is crucial to reading engagement. The purpose of this case study was to investigate student attitudes toward reading at summer reading clinic through an urban…

  19. Case Studies in Exemplary Service Delivery

    ERIC Educational Resources Information Center

    Wollard, Karen Kelly

    2008-01-01

    Twelve exemplary service providers from three highly acclaimed resorts discuss and demonstrate what it takes to deliver award-winning service consistently. This research, using a qualitative, explanatory case study method, sought to investigate how they do it. Three themes emerged from the data that should have a profound impact on HRD (human…

  20. NACASETAC BAY: AN INTERACTIVE CASE STUDY

    EPA Science Inventory

    This interactive case study or "game" was created to provide a "hands on" experience in the application of a weight of evidence approach to sediment assessment. The game proceeds in two phases. In each phase the players work together as a group. A scenario is presented, and the g...

  1. Three Case Studies in Green Cleaning

    ERIC Educational Resources Information Center

    State Education Standard, 2012

    2012-01-01

    This article presents case studies from three districts implementing green cleaning. In 2008, Missouri passed legislation requiring state education officials to convene a committee of stakeholders with the purpose of developing green cleaning guidelines and specifications for schools. The guide, published by the Department of Elementary and…

  2. Sustainability in Housing: A Curriculum Case Study.

    ERIC Educational Resources Information Center

    Parrott, Kathleen; Emmel, Joann M.

    2001-01-01

    Explores the influence of environmental issues on the field of housing, from the perspective of sustainable housing. Presents a case study of the development of a college course to address these issues by integrating energy management, air quality, water quality, and waste management. (Author)

  3. International Space Station Systems Engineering. Case Study

    DTIC Science & Technology

    2010-01-01

    manufacturing, cost and schedule, training and support, and disposal." This case study on the International Space Station considers what many believe to have...over 160 spacewalks-more space activities than NASA had accomplished prior to the 1993 International Space Station decision. Probably more important was

  4. Reduction of forecast uncertainty in the context of hydropower production: a case study for two catchment in Lac-St-Jean, Canada

    NASA Astrophysics Data System (ADS)

    Brisson, Cathy; Boucher, Marie-Amélie; Latraverse, Marco

    2014-05-01

    locations (intermediate location and downstream) leads to improved forecasts, as measured by the Nash-Sutcliffe efficiency criterion. The parameter sets thus determined best represent the phenomena of exchange and runoff in the watershed. Second, this study aims at reducing the uncertainty associated to the evacuation function for the Bonnard channel as well as the time delay related to this transfer. Instead of using a fixed 2-day time delay for the transfer, it was attempted to represent the channel in the hydrological model CEQUEAU and compute the time delay from this model. The results show that hydrological modelling does not improve the results and that the 2-day time delay is adequate, especially for first days of opening and few days after closure of the gate. In addition, this research shows that the evacuation function of Bonnard spillway is inexact for large streamflows. It is considered the main source of uncertainty for the prediction of inflows to the reservoirs. We also show that the evacuated streamflows can be successfully corrected by hydrological modelling. This case study shows that a careful revision of the inflow forecasting process for those important watersheds can help reduce predictive uncertainty. Although the application is specific to the Lac-St-Jean area, we believe that our experience could serve other users and water managers with similar issues regarding inflow uncertainty. Reference Morin, G., J.-P. Fortin, J.-P. Lardeau, W. Sochanska and S. Paquette. 1981. Modèle CEQUEAU : Manuel d'utilisation. Rapport de recherche no R-93, INRS-Eau, Sainte-Foy

  5. Avio case study: the MRO process

    NASA Astrophysics Data System (ADS)

    Corallo, Angelo; Dimartino, Angelo; Errico, Fabrizio; Giangreco, Enza

    This chapter presents the case study of the Avio Brindisi plant where a profound process of change has been in progress for a number of years. We use the TEKNE Project methodology of change to analyze the different aspects of the case, highlighting the firm's strategic, organizational and technological characteristics and the environment it operates in. In particular, we envisage a change in the plant's business model in response to the expansion of its client segments and a potential new approach to MRO operations based on advanced fleet management practices that would radically change the firm's organization and value network with respect to its MRO service offering, thereby yielding extensive global market opportunities.

  6. Casing buckling studies lower cementing costs

    SciTech Connect

    Wilson, W.N.; Perkins, T.K.; Striegler, J.H.

    1980-09-01

    Fluid withdrawal, permafrost thaw, or large changes in pipe temperature can induce severe axial stresses on a well's casing, which often results in buckling. To minimize the cost of stabilizing the casing via cementing, engineers have developed new design criteria for preventing buckling; even for severe conditions, the resulting formulations cost less to use than those derived from previous criteria. Theoretical studies suggest that for a laterally supported pipe, the axial buckling force approaches a minimum asymptotic limit as the pipe length increases; thus the buckling equation for an infinitely long pipe can serve as a simple yet conservative design criterion for avoiding elastic axial buckling of any laterally supported casing. According to calculations, axial buckling can be prevented, even in a very long pipe, by surrounding the pipe with an elastic medium having a sufficiently high modulus.

  7. A case study of teen parenting.

    PubMed

    Cardaci, Regina

    2011-01-01

    The purpose of this case study is to demonstrate how the use of the standard nursing languages of NANDA International (NANDA-I), the Nursing Interventions Classification (NIC), and the Nursing Outcomes Classification (NOC) help a teen mother provide safe care for her newborn. In addition, this study aims to demonstrate how important standardized nursing languages are in documenting the care provided. The data sources for this article are clinical nursing practice, research evidence in the form of care directives from the American Academy of Pediatrics regarding newborn safety and feeding, and the books that provide directions for the use of NANDA-I, NIC, and NOC. This case demonstrates the use of the nursing process in providing care for a teen mother and a newborn. Many new mothers, especially teens, are poorly informed regarding normal newborn care and safety upon hospital discharge. For this reason, teen mothers should be referred for nursing assessments in the home environment after discharge. This case demonstrates the need for education of all parents prior to hospital discharge and supports the need for home-based evaluations to ensure the safety of the infant. This case also supports the use of standardized nursing language to document the care provided. © 2011, The Author; International Journal of Nursing Terminologies and Classifications © 2011, NANDA International.

  8. Paraneoplastic dermatomyositis: a study of 12 cases.

    PubMed

    Requena, C; Alfaro, A; Traves, V; Nagore, E; Llombart, B; Serra, C; Martorell, A; Guillén, C; Sanmartín, O

    2014-09-01

    Adult dermatomyositis presents as a paraneoplastic syndrome in up to 25% of cases, but no clinical, histologic, or laboratory markers completely specific for paraneoplastic disease in dermatomyositis have been identified to date. Furthermore, studies on adult dermatomyositis do not usually report the frequency of cutaneous features of dermatomyositis in patients with associated cancer. Our aim was to review the characteristics of paraneoplastic dermatomyositis in patients seen at our hospital. We studied 12 cases of paraneoplastic dermatomyositis and recorded patient age and sex, associated cancer, time between onset of dermatomyositis and cancer, emergent cutaneous manifestations, muscle involvement, dysphagia, lung disease, and levels of creatine phosphokinase and circulating autoantibodies. The mean age of the patients was 61 years and the 2 most common malignancies were ovarian cancer and bladder cancer. The mean time between the diagnosis of cancer and dermatomyositis was 7 months and in most cases, the cancer was diagnosed first. Seven patients had amyopathic dermatomyositis. The most common cutaneous signs were a violaceous photodistributed rash sparing the interscapular area and a heliotrope rash, followed by Gottron papules and cuticle involvement. Superficial cutaneous necrosis was observed in 3 cases. Myositis-specific autoantibodies were not detected in any of the 6 patients who underwent this test. Paraneoplastic dermatomyositis is often amyopathic. There are no specific cutaneous markers for malignancy in dermatomyositis. Myositis-specific antibodies are not associated with paraneoplastic dermatomyositis. Copyright © 2013 Elsevier España, S.L.U. y AEDV. All rights reserved.

  9. Computer Based Social Studies Instruction: A Qualitative Case Study

    ERIC Educational Resources Information Center

    Ulusoy, Mustafa

    2005-01-01

    In this study, the quality of the computer and Internet based social studies course was investigated. A case study design was chosen to understand, a) how computers are used in the eighth grade classroom, b) what the students' and teachers' perceptions are about the advantages and problems of using computers. Qualitative data sources showed that…

  10. Marketing and clinical trials: a case study

    PubMed Central

    Francis, David; Roberts, Ian; Elbourne, Diana R; Shakur, Haleema; Knight, Rosemary C; Garcia, Jo; Snowdon, Claire; Entwistle, Vikki A; McDonald, Alison M; Grant, Adrian M; Campbell, Marion K

    2007-01-01

    Background Publicly funded clinical trials require a substantial commitment of time and money. To ensure that sufficient numbers of patients are recruited it is essential that they address important questions in a rigorous manner and are managed well, adopting effective marketing strategies. Methods Using methods of analysis drawn from management studies, this paper presents a structured assessment framework or reference model, derived from a case analysis of the MRC's CRASH trial, of 12 factors that may affect the success of the marketing and sales activities associated with clinical trials. Results The case study demonstrates that trials need various categories of people to buy in – hence, to be successful, trialists must embrace marketing strategies to some extent. Conclusion The performance of future clinical trials could be enhanced if trialists routinely considered these factors. PMID:18028537

  11. Marketing and clinical trials: a case study.

    PubMed

    Francis, David; Roberts, Ian; Elbourne, Diana R; Shakur, Haleema; Knight, Rosemary C; Garcia, Jo; Snowdon, Claire; Entwistle, Vikki A; McDonald, Alison M; Grant, Adrian M; Campbell, Marion K

    2007-11-20

    Publicly funded clinical trials require a substantial commitment of time and money. To ensure that sufficient numbers of patients are recruited it is essential that they address important questions in a rigorous manner and are managed well, adopting effective marketing strategies. Using methods of analysis drawn from management studies, this paper presents a structured assessment framework or reference model, derived from a case analysis of the MRC's CRASH trial, of 12 factors that may affect the success of the marketing and sales activities associated with clinical trials. The case study demonstrates that trials need various categories of people to buy in - hence, to be successful, trialists must embrace marketing strategies to some extent. The performance of future clinical trials could be enhanced if trialists routinely considered these factors.

  12. A Case Study of SSP for Indonesia

    NASA Astrophysics Data System (ADS)

    Mostavan, A.; Kaya, N.

    2002-01-01

    The market of the Solar Power Satellite must be worldwide, because it can be provide electricity anywhre in the world from the Earth's orbits. We have perform case studies of various countries to understand their benefits and disadvantages provide by the Space Solar Power, because each country has much different condition on energy from other countries. We are starting the international collaboration between Indonesia and Japan to carry out the case study for Indonesia. In Japan, METI (Ministry of Economy, Trade and Industry) has already organized a committee to investigate the feasibility of the Space Solar Power and to make a plan to launch a space demonstration of the Solar Power Satellite. While, Indonesia is quickly developing economy and increasing their energy demand. We are investigating the detailed energy conditions of Indonesia and the benefits and disadvantages of he SSP for Indonesia. Especially, we will perform the investigation on the receiving system for the Japanese pilot SPS.

  13. The "Reverse Case Study:" Enhancing Creativity in Case-Based Instruction in Leadership Studies

    ERIC Educational Resources Information Center

    Atkinson, Timothy N.

    2014-01-01

    In this application brief I share a case study assignment I used in my "Leadership in Complex Organizations" classes to promote creativity in problem solving. I sorted Ph.D. students into two teams and trained them to use creative writing techniques to "encode" theory into their own cases. A sense of competition emerged. Later,…

  14. Case studies of soil in art

    NASA Astrophysics Data System (ADS)

    Feller, C.; Landa, E. R.; Toland, A.; Wessolek, G.

    2015-08-01

    The material and symbolic appropriations of soil in artworks are numerous and diverse, spanning many centuries and artistic traditions, from prehistoric painting and ceramics to early Renaissance works in Western literature, poetry, paintings, and sculpture, to recent developments in film, architecture, and contemporary art. Case studies focused on painting, installation, and film are presented with the view of encouraging further exploration of art about, in, and with soil as a contribution to raising soil awareness.

  15. Concentrated Photo Voltaics (CPV): a case study

    NASA Astrophysics Data System (ADS)

    Centro, S.

    2015-08-01

    Concentrated PhotoVoltaic (CPV), among green energy solutions, nowadays has the ambition to reach grid-parity without subside. CPV substitutes large areas of expensive semiconductor solar cells, with concentrating optics made of cheap materials. Moreover the cells that are suitable for CPV exhibits an unprecedented efficiency and their technology is progressing every year. A case study project, TwinFocus®, will be presented in detail.

  16. Leadership Development: A Senior Leader Case Study

    DTIC Science & Technology

    2014-10-01

    September–October 2014 Air & Space Power Journal | 71 Feature Leadership Development A Senior Leader Case Study Maj Jason M. Newcomer , DBA, USAF...Z39-18 September–October 2014 Air & Space Power Journal | 72 Newcomer , Kolberg, & Corey Leadership Development Feature program, a requirement-driven...meet or exceed the DT program’s objectives. September–October 2014 Air & Space Power Journal | 73 Newcomer , Kolberg, & Corey Leadership Development

  17. Fiberglass distribution poles: A case study

    SciTech Connect

    Miller, M.F.; Hosford, G.S.; Boozer, J.F. III

    1995-01-01

    This paper addresses the design considerations and manufacturing techniques along with mechanical test results of fiberglass reinforced composite (FRC) primary distribution poles. With it`s light weight, and virtually no maintenance it offers a viable alternative for use in remote and inaccessible locations. This paper also discusses a case study where seventy five FRC primary distribution poles have been installed on a distribution system in a remote area accessible only by foot and helicopter.

  18. Shuttle Transportation System Case-Study Development

    NASA Technical Reports Server (NTRS)

    Ransom, Khadijah

    2012-01-01

    A case-study collection was developed for NASA's Space Shuttle Program. Using lessons learned and documented by NASA KSC engineers, analysts, and contractors, decades of information related to processing and launching the Space Shuttle was gathered into a single database. The goal was to provide educators with an alternative means to teach real-world engineering processes and to enhance critical thinking, decision making, and problem solving skills. Suggested formats were created to assist both external educators and internal NASA employees to develop and contribute their own case-study reports to share with other educators and students. Via group project, class discussion, or open-ended research format, students will be introduced to the unique decision making process related to Shuttle missions and development. Teaching notes, images, and related documents will be made accessible to the public for presentation of Space Shuttle reports. Lessons investigated included the engine cutoff (ECO) sensor anomaly which occurred during mission STS-114. Students will be presented with general mission infom1ation as well as an explanation of ECO sensors. The project will conclude with the design of a website that allows for distribution of information to the public as well as case-study report submissions from other educators online.

  19. Psychotherapy and psychological time: a case study.

    PubMed

    Quiñones, Álvaro; Ceric, Francisco; Ugarte, Carla; De Pascale, Adele

    2017-01-01

    The present study is a comparative case study as part of research on the psychotherapeutic process. This research describes the perception of subjective time in two psychotherapeutic processes, one successful and one unsuccessful. We studied two psychotherapeutic processes of cognitive orientation, which were video recorded and fully transcribed in each session. First a qualitative analysis was applied for quality coding (Top-down) was performed to identify category types of subjective time, depending on psychological well-being. These were categorized as past, present, and future; each one in positive and negative forms. Secondly, two quantitative statistical analyses were applied: one of content analysis, which allowed us to observe the frequencies for the six categories, and another, a cumulative frequency analysis, which allowed us to identify a differential pattern in the analyzed cases. These data showed different temporal profiles for both cases, differentiated by categories. This finding that would allow us to track the process of subjectivity in terms of specific components associated with psychotherapy success. We present a mixed method, a qualitative for initial coding of patient speaking turns and a quantitative methodology such as the cumulative frequency analysis in time in a therapeutic context. Those changes are progressive and must be observed as a continuous and dynamic evolution to allow for an interpretation in a naturalistic context.

  20. Nanomaterial Case Study: Nanoscale Silver in Disinfectant ...

    EPA Pesticide Factsheets

    This draft document presents a case study of engineered nanoscale silver (nano-Ag), focusing on the specific example of nano-Ag as possibly used in disinfectant sprays. This case study is organized around a comprehensive environmental assessment (CEA) framework, which combines a product life-cycle perspective with the risk assessment paradigm. The document does not draw conclusions about potential risks. Instead, it is intended to be used as part of a process to identify what is known and unknown about nano-Ag in a selected application and can be used as a starting point to identify and prioritize possible research directions to support future assessments of nanomaterials. The information presented in the case study and the questions raised in this document are a foundation for a process to determine priorities among various research topics and directions. After that process has been completed, a final chapter will be added to this document to summarize highlights from preceding chapters and the major research issues that have emerged.

  1. National Environmental Change Information System Case Study

    NASA Technical Reports Server (NTRS)

    Goodman, S. J.; Ritschard, R.; Estes, M. G., Jr.; Hatch, U.

    2001-01-01

    The Global Hydrology and Climate Center and NASA's Marshall Space Flight Center conducted a fact-finding case study for the Data Management Working Group (DMWG), now referred to as the Data and Information Working Group (DIWG), of the U.S. Global Change Research Program (USGCRP) to determine the feasibility of an interagency National Environmental Change Information System (NECIS). In order to better understand the data and information needs of policy and decision makers at the national, state, and local level, the DIWG asked the case study team to choose a regional water resources issue in the southeastern United States that had an impact on a diverse group of stakeholders. The southeastern United States was also of interest because the region experiences interannual climatic variations and impacts due to El Nino and La Nina. Jointly, with input from the DIWG, a focus on future water resources planning in the Apalachicola-Chattahoochee-Flint (ACF) River basins of Alabama, Georgia, and Florida was selected. A tristate compact and water allocation formula is currently being negotiated between the states and U.S. Army Corps of Engineers (COE) that will affect the availability of water among competing uses within the ACF River basin. All major reservoirs on the ACF are federally owned and operated by the U.S. Army COE. A similar two-state negotiation is ongoing that addresses the water allocations in the adjacent Alabama-Coosa-Tallapoosa (ACT) River basin, which extends from northwest Georgia to Mobile Bay. The ACF and ACT basins are the subject of a comprehensive river basin study involving many stakeholders. The key objectives of this case study were to identify specific data and information needs of key stakeholders in the ACF region, determine what capabilities are needed to provide the most practical response to these user requests, and to identify any limitations in the use of federal data and information. The NECIS case study followed the terms of reference

  2. Mississippi River channel response to the Bonnet Carré Spillway opening in the 2011 flood and its implications for the design and operation of river diversions

    NASA Astrophysics Data System (ADS)

    Allison, Mead A.; Vosburg, Brian M.; Ramirez, Michael T.; Meselhe, Ehab A.

    2013-01-01

    SummaryThe large Mississippi River flood in 2011 was notable in the lowermost Louisiana, USA reach for requiring operation of several flood control structures to reduce stress on artificial levees: the largest diversion went through the gated Bonnet Carré Spillway, which was opened for 42 days in May and June. The removal of approximately 20% of the total flood discharge from the river provided an opportunity to examine the impact of large water diversion on the sediment transport capacity of large rivers. Boat-based, acoustic and water and bed sampling surveys were conducted in the Mississippi River channel adjacent to the Spillway immediately prior to the opening of the structure, at full capacity, and immediately following (June 2011) and 1 year after (June 2012) closure. The surveys were designed to examine (1) elevation change of the channel bed due to scour or aggradation of sediment, and (2) suspended and bedload transport variability upriver and downriver of the Spillway. The results indicate that approximately 9.1 million tons of sand were deposited on the channel bed immediately downriver of the water exit pathway and extending at least 13 km downriver at a rapidly and progressively reducing magnitude per river kilometer. The surficial deposit was of finer grain size than the lateral sand bars in the channel upriver of the structure. We argue the deposit was largely delivered from suspension derived from the observed deflation of lateral bars upstream of the diversion point, rather than from sand arriving from the drainage basin. Approximately 69% of the 2011 flood deposit was removed from the 13 km downstream reach between June 2011 and June 2012. We conclude that the source of the channel deposit was the reduction in stream power, and, thus, in the sediment transport capacity of the Mississippi, associated with the water withdrawal. The re-entrainment of this material in the following flood year indicates the system rapidly re-establishes an

  3. Physics in Industry: A Case Study

    NASA Astrophysics Data System (ADS)

    Pratt-Ferguson, Ben

    2007-10-01

    Often ignored and sometimes even considered ``black sheep'' by the university & government-lab physicists, many industrial physicists continue making valuable scientific contributions in diverse areas, from computer science to aero and thermo-dynamics, communications, mathematics, engineering, and simulation, to name a few. This talk will focus on what industrial physicists do, what preparations are beneficial to obtaining a first industrial job, and what the business environment is like for physicists. The case study will be that of the author, starting with undergraduate and graduate studies and continuing on to jobs in industry.

  4. Case study of isosurface extraction algorithm performance

    SciTech Connect

    Sutton, P M; Hansen, C D; Shen, H; Schikore, D

    1999-12-14

    Isosurface extraction is an important and useful visualization method. Over the past ten years, the field has seen numerous isosurface techniques published leaving the user in a quandary about which one should be used. Some papers have published complexity analysis of the techniques yet empirical evidence comparing different methods is lacking. This case study presents a comparative study of several representative isosurface extraction algorithms. It reports and analyzes empirical measurements of execution times and memory behavior for each algorithm. The results show that asymptotically optimal techniques may not be the best choice when implemented on modern computer architectures.

  5. Using Case Studies to Teach About Global Issues, Bali: A Case Study

    ERIC Educational Resources Information Center

    Oswald, James M.

    1974-01-01

    The South Pacific island of Bali is used as a case study of overpopulation and food shortage. A brief description of the resources, the typical lifestyle of the Balinese farmer, and possible teaching techniques are given. (DE)

  6. Using Case Studies to Teach About Global Issues, Bali: A Case Study

    ERIC Educational Resources Information Center

    Oswald, James M.

    1974-01-01

    The South Pacific island of Bali is used as a case study of overpopulation and food shortage. A brief description of the resources, the typical lifestyle of the Balinese farmer, and possible teaching techniques are given. (DE)

  7. [Syphilis and pregnancy: study of 94 cases].

    PubMed

    de la Calle, María; Cruceyra, Mireia; de Haro, Mar; Magdaleno, Fernando; Montero, María Dolores; Aracil, Javier; González, Antonio

    2013-08-17

    To study the epidemiology, diagnosis, treatment strategies and perinatal outcomes of gestational syphilis. We performed a retrospective study of 94 pregnant women with syphilis whose gestation and delivery were monitored in a Department of Obstetrics from 2002 to 2010 among a total of 85,806 births of women without syphilis in the same period. The prevalence of gestational syphilis was 0.11%. Most of the women were foreign and the most prevalent type was late latent syphilis. Only 57 patients underwent right treatment despite adequate prescription. Maternal complications were confirmed in 31 pregnant women and 16 cases had fetal complications. We diagnosed 4 cases of neonatal syphilis, 3 of them with syphilitic meningitis, whose mothers had not completed the treatment correctly. The implementation of a mandatory syphilis serology in the pregnancy has enabled us to diagnose many cases of late latent syphilis. The successful completion of treatment must be ensured to prevent vertical transmission. Copyright © 2012 Elsevier España, S.L. All rights reserved.

  8. Nanomaterial Case Studies: Nanoscale Titanium Dioxide in ...

    EPA Pesticide Factsheets

    EPA announced the availability of the final report, Nanomaterial Case Studies: Nanoscale Titanium Dioxide in Water Treatment and in Topical Sunscreen. This report is a starting point to determine what is known and what needs to be known about selected nanomaterials as part of a process to identify and prioritize research to inform future assessments of the potential ecological and health implications of these materials. Two specific applications of nanoscale titanium dioxide (nano-TiO2) are considered: (1) as an agent for removing arsenic from drinking water; and (2) as an active ingredient in topical sunscreen. These case studies are organized around a comprehensive environmental assessment (CEA) framework that combines a product life cycle perspective with the risk assessment paradigm. They are intended to help identify what may need to be known in order to conduct a comprehensive environmental assessment of the potential risks related to nano-TiO2. These “case studies” do not represent completed or even preliminary assessments, nor are they intended to serve as a basis for risk management decisions in the near term on these specific uses of nano TiO2. Rather, the intent is to use this document in developing the scientific and technical information needed for future assessment efforts.

  9. Nanomaterial Case Study: A Comparison of Multiwalled ...

    EPA Pesticide Factsheets

    This Independent Peer Review Draft document presents a case study of multiwalled carbon nanotubes (MWCNTs); it focuses on the specific example of MWCNTs as used in flame-retardant coatings applied to upholstery textiles. This case study is organized around the comprehensive environmental assessment (CEA) framework, which structures available information pertaining to the product life cycle, environmental transport and fate, exposure-dose in receptors (i.e., humans, ecological populations, and the environment), and potential impacts in these receptors. The document does not draw conclusions about potential risks, or present an exhaustive review of the literature. Rather, it was used in an independent peer review to provide feedback on revisions that EPA made to the external review draft of the document based on public comments and the CEA process to identify research gaps for MWCNTs. This document seeks to identify what is known and unknown related to assessing the health and environmental implications of a nanomaterial; in this case multiwalled carbon nanotubes (MWCNTs) used in flame-retardant coatings applied to textiles.

  10. Using Case Study Analysis and Case Writing to Structure Clinical Experiences in a Teacher Education Program

    ERIC Educational Resources Information Center

    Floyd, Deborah M.; Bodur, Yasar

    2005-01-01

    This study reports on the design and results of a two-semester study on the use of case study analysis and case writing in clinical experiences in an undergraduate teacher education program. Findings indicated that structured experiences with case studies and case writing increase preservice teachers' informed decision making on educational…

  11. Oral lichen planus: study of 21 cases*

    PubMed Central

    Werneck, Juliana Tristão; Costa, Taiara de Oliveira; Stibich, Christian Abreu; Leite, Cristhiane Almeida; Dias, Eliane Pedra; Silva Junior, Arley

    2015-01-01

    BACKGROUND: Lichen planus is considered to be the most common dermatological disease involving the oral mucosa. OBJECTIVE: To investigate the profile, clinical features, and the presence of dysplasia and candidiasis in patients with oral lichen planus. METHODS: A total of 21 patients were selected from 258 patients at risk for oral cancer development. RESULTS: Most of the patients were white (76,2%), female (66,6%), with mean age of 58.8 years. Eight were smokers and seven were alcohol consumers. The buccal mucosa was the most affected site, followed by the tongue and the gingiva. The reticular pattern was the most common appearance. Histopathology depicted dysplasia in nine cases and cytopathology was positive for Candida in eight cases in the first appointment. CONCLUSION: Our data are similar to the literature. Cytopathology was important for the diagnosis of candidiasis. Although the presence of dysplasia was verified, further studies are necessary to clarify the importance of this finding. PMID:26131860

  12. Terahertz applications in cultural heritage: case studies

    NASA Astrophysics Data System (ADS)

    Giovannacci, D.; Martos-Levif, D.; Walker, G. C.; Menu, M.; Detalle, V.

    2013-11-01

    Terahertz (THz) spectroscopy and imaging is a non-destructive, non-contact, non-invasive technology emerging as a tool for the analysis of cultural heritage. THz Time Domain Spectroscopy (TDS) techniques have the ability to retrieve information from different layers within a stratified sample, that enable the identification of hidden sub-layers in the case of paints and mural paintings. In this paper, we present the THz TDS2 system developed in the European Commission's 7th Framework Program project CHARISMA [grant agreement no. 228330]. Bespoke single processing algorithms; including a deconvolution algorithm can be deployed to increase the resolution and the global performance of the system. The potential and impact of this work is demonstrated through two case studies of mural paintings, where the capability to reveal the stratigraphy of the artworks is demonstrated.

  13. The case study of biomaterials and biominerals

    NASA Astrophysics Data System (ADS)

    Del Hoyo Martínez, Carmen

    2013-04-01

    The teaching of biomaterials as case study by on-line platform , susceptible to develop both individually and in groups, got different objectives proposed by the European Higher Education System, among which include: participate actively in the teaching-learning process by students, interpreting situations, adapt processes and solutions. It also improves oral and written communication, analytical skills and synthesis and also the ability to think critically. Biomaterials have their origin in biominerals. These are solid inorganic compounds of defined structure, consisting of molecular control mechanisms that operate in biological systems. Its main functions are: structural support, a reservoir of essential elements, sensors, mechanical protection and storage of toxic elements. Following the demand of materials compatible with certain functional systems of our body, developed biomaterials. Always meet the condition of biocompatibility. Should be tolerated by the body and do not provoke rejection. This involves a comprehensive study of physiological conditions and the anatomy of the body where a biomaterial has to be implemented. The possibility of generating new materials from biominerals has a major impact in medicine and other fields could reach as geology, construction, crystallography, etc. While the study of these issues is in its infancy today, can be viewed as an impact on the art and future technology. Planning case study that students would prepare its report for discussion in subgroups. Occurs then the pooling of individual analysis, joint case discussion and adoption by the subgroup of a consensual solution to the problem. The teacher as facilitator and coordinator of the final case analysis, sharing leads to group-wide class and said the unanimous decision reached by the students and gives his opinion on the resolution of the case. REFERENCES D.P. Ausubel. Psicología Educativa. Un punto de vista cognoscitivo. Trillas. Ed. 1983. E.W. Eisner. Procesos

  14. Upwelling off western Iberia (two case study).

    NASA Astrophysics Data System (ADS)

    Vitorino, J.

    2003-04-01

    The occurrence of a seasonal (summer) upwelling regime characterises the oceanography of the western Iberian margin. Surface manifestations of this process, in the form of cold filaments and eddies, are well documented in satelite imagery. In this contribution, observations and numerical modelling tools are combined to provide two contrasting views of the western Iberian upwelling. The first case study adresses the summer upwelling regime offshore the northern Portuguese coast. The study area is characterised by a rather regular coastline and shelf topography. Data from a program of observations conducted by Instituto Hidrografico, from May to October 1987, which included two hydrographic surveys and an array of three currentmeter moorings, is used to characterise the evolution of shelf and upper slope conditions along the complete upwelling season. The second case study will focus the developpment of an upwelling filament off Cape S. Vicent, in the southwestern tip of Portugal, during a period of sustained northerly winds in April 2001. The area is characterised by abrupt changes in coastline orientation and a complex topography (e.g Gorringe seamount). The dominant aspects of both the filament dynamics and shelf circulation are studied using a primitive equation model (Harvard Ocean Prediction System - HOPS) with assimilation of data collected during a hydrographic surveys conducted during April 2001.

  15. Prayer Healing: A Case Study Research Protocol.

    PubMed

    Kruijthoff, Dirk J; van der Kooi, Cornelis; Glas, Gerrit; Abma, Tineke A

    2017-01-01

    Context • Prayer healing is a common practice in many religious communities around the world. Even in the highly secularized Dutch society, cases of prayer healing are occasionally reported in the media, often generating public attention. There is an ongoing debate regarding whether such miraculous cures do actually occur and how to interpret them. Objective • The aim of the article was to present a research protocol for the investigation of reported cases of remarkable and/or unexplained healing after prayer. Design • The research team developed a method to perform a retrospective, case-based study of prayer healing. Reported prayer healings can be investigated systematically in accordance with a step-by-step methodology. The focus is on understanding the healing by studying it from multiple perspectives, using both medical judgment and patients' narratives collected by qualitative methods Setting • The study occurred at Vrije Universiteit (VU) and VU Medical Center (Amsterdam, Netherlands) as well as the general medical practice of the first author. Participants • Potential participants could be any individuals in the Netherlands or neighboring countries who claim to have been healed through prayer. The reports of healing came from multiple sources, including the research team's medical practices and their direct vicinities, newspaper articles, prayer healers, and medical colleagues. Outcome Measures • Medical data were obtained before and after prayer. Subsequently, a member of a research team and of a medical assessment committee made a standardized judgment that evaluated whether a cure was clinically remarkable or scientifically unexplained. The participants' experiences and insider perspectives were studied, using in-depth interviews in accordance with a qualitative research methodology, to gain insight into the perceptions and explanations of the cures that were offered by participants and by the members of the medical assessment committee. The

  16. Metrology in Pharmaceutical Industry - A Case Study

    NASA Astrophysics Data System (ADS)

    Yuvamoto, Priscila D.; Fermam, Ricardo K. S.; Nascimento, Elizabeth S.

    2016-07-01

    Metrology is recognized by improving production process, increasing the productivity, giving more reliability to the measurements and consequently, it impacts in the economy of a country. Pharmaceutical area developed GMP (Good Manufacture Practice) requeriments, with no introduction of metrological concepts. However, due to Nanomedicines, it is expected this approach and the consequent positive results. The aim of this work is to verify the level of metrology implementation in a Brazilian pharmaceutical industry, using a case study. The purpose is a better mutual comprehension by both areas, acting together and governmental support to robustness of Brazilian pharmaceutical area.

  17. Wind to Hydrogen in California: Case Study

    SciTech Connect

    Antonia, O.; Saur, G.

    2012-08-01

    This analysis presents a case study in California for a large scale, standalone wind electrolysis site. This is a techno-economic analysis of the 40,000 kg/day renewable production of hydrogen and subsequent delivery by truck to a fueling station in the Los Angeles area. This quantity of hydrogen represents about 1% vehicle market penetration for a city such as Los Angeles (assuming 0.62 kg/day/vehicle and 0.69 vehicles/person) [8]. A wind site near the Mojave Desert was selected for proximity to the LA area where hydrogen refueling stations are already built.

  18. Black widow spider bite: a case study.

    PubMed

    Gaisford, Kristine; Kautz, Donald D

    2011-01-01

    This article is a case study of a patient cared for in the hours before her death. After the patient's death, we learned the patient died of a black widow spider bite. This article sheds light on the potential seriousness of this venom and allows for more rapid detection and treatment of those who are unfortunate enough to be bitten. The authors have documented the sequence of events for the patient, outlined the care the patient received, examined the pathophysiology of the body to a spider bite, and then made a passionate appeal for other nurses who work in critical care to do the same with patients in similar situations.

  19. Grand valley irrigation return flow case study

    SciTech Connect

    Keys, J.W.

    1981-06-01

    Irrigation water supply is furnished annually to about 71,500 acres of land in the Grand Valley of western Colorado. Return flows from that irrigation contribute about 780,000 tpy of salt to the Colorado River, causing an increase of 77 mg/l in the salinity concentration at Imperial Dam. A case study of water quality in this region is focused on: water quality data for irrigation and return flows/ identification of regulations that affect irrigation and return flows/ and a proposed program for controlling salinity levels. (1 map, 9 references, 8 tables)

  20. Reinforcement learning: Solving two case studies

    NASA Astrophysics Data System (ADS)

    Duarte, Ana Filipa; Silva, Pedro; dos Santos, Cristina Peixoto

    2012-09-01

    Reinforcement Learning algorithms offer interesting features for the control of autonomous systems, such as the ability to learn from direct interaction with the environment, and the use of a simple reward signalas opposed to the input-outputs pairsused in classic supervised learning. The reward signal indicates the success of failure of the actions executed by the agent in the environment. In this work, are described RL algorithmsapplied to two case studies: the Crawler robot and the widely known inverted pendulum. We explore RL capabilities to autonomously learn a basic locomotion pattern in the Crawler, andapproach the balancing problem of biped locomotion using the inverted pendulum.

  1. Brain stem glioma: two case studies.

    PubMed

    Rosenblum, Ruth K

    2005-01-01

    The paths taken by each family in coming to terms with the dismal prognosis associated with brain stem glioma can be quite different. The case studies of 2 school-age girls diagnosed with a brain stem glioma within weeks of each other are presented. The multi-disciplinary team response to each family was individualized at each stage of diagnosis, treatment, and end-of-life care, as expected. The ultimate chronologic union of these 2 families as each child neared death was somewhat uncanny. The experience of each family, and their relationship with the team through this process, was an intense challenge and learning experience.

  2. Myonecrosis in Sickle Cell Anemia: Case Study

    PubMed Central

    Turaga, Lalita Prabha; Boddu, Prajwal; Kipferl, Steve; Basu, Anupam; Yorath, Martin

    2017-01-01

    Patient: Male, 27 Final Diagnosis: Myonecrosis of sickle cell anaemia Symptoms: Pain • redness to feet • swelling foot Medication: — Clinical Procedure: MRI Specialty: Podiatry Objective: Rare disease Background: Myonecrosis is one of the more poorly studied, painful manifestations of sickle cell crisis. Medical literature is sparse detailing the manifestations and management of such symptoms. In myonecrosis, red cells containing sickle hemoglobin become rigid, resulting in reduced blood flow and myonecrosis. Case Report: We present a case study of a patient in sickle cell crisis with an episode of acute pain and swelling to the intrinsic muscles of the foot as a prominent feature of the crises. Although muscle biopsy is considered the gold standard for the diagnosis of myositis or myonecrosis, a low intensity signal on T1 and high intensity signal on T2 at the affected muscle belly can be as conclusive as imaging studies. In an actively sickling patient any invasive intervention should be avoided as it can result in ischemic necrosis of the tissues, due to interruption of capillary flow in end-arteries. Conclusions: Early recognition is critical in sickle cell disease management, allowing for prompt and aggressive fluid resuscitation which remains a cornerstone in the management of most sickle cell vaso-occlusive crises. In this instance, off loading the extremity and early fluid resuscitation resolved the pain and swelling and prevented myonecrosis. PMID:28133359

  3. Learning with Multimedia Cases: An Evaluation Study

    ERIC Educational Resources Information Center

    Van Den Berg, Ellen; Jansen, Leanne; Blijleven, Peter

    2004-01-01

    This article is about the relation between case-based learning and transfer in teacher education. Through a design research approach a multimedia case has been developed. The topic of the case is "outdoor activities in science education." The core of the case is a 17 minute video that is supplemented by all kinds of background information. Results…

  4. Formal Methods Case Studies for DO-333

    NASA Technical Reports Server (NTRS)

    Cofer, Darren; Miller, Steven P.

    2014-01-01

    RTCA DO-333, Formal Methods Supplement to DO-178C and DO-278A provides guidance for software developers wishing to use formal methods in the certification of airborne systems and air traffic management systems. The supplement identifies the modifications and additions to DO-178C and DO-278A objectives, activities, and software life cycle data that should be addressed when formal methods are used as part of the software development process. This report presents three case studies describing the use of different classes of formal methods to satisfy certification objectives for a common avionics example - a dual-channel Flight Guidance System. The three case studies illustrate the use of theorem proving, model checking, and abstract interpretation. The material presented is not intended to represent a complete certification effort. Rather, the purpose is to illustrate how formal methods can be used in a realistic avionics software development project, with a focus on the evidence produced that could be used to satisfy the verification objectives found in Section 6 of DO-178C.

  5. Spontaneous intracranial hypotension: a case study.

    PubMed

    Tyree, Tammy L; Porter, Randall

    2012-05-01

    To present an illustrative case study of a patient with spontaneous intracranial hypotension (SIH) and to increase awareness of this condition among nurse practitioners (NPs). A literature search was conducted, and deidentified patient information forms the basis of this presentation. The authors' experience and appropriate images enhance the presentation of the case study. SIH is a condition that typically occurs without a traumatic event, although it can be associated with minor trauma. It occurs when cerebrospinal fluid (CSF) leaks through a focal weakness in the dural sac or meningeal diverticula, resulting in CSF hypovolemia. Patients usually present with an orthostatic headache. The most common brain magnetic resonance imaging findings are diffuse pachymeningeal enhancement, descent of the cerebellar tonsils, and subdural fluid collections. Treatment options range from management of symptoms to surgical repair of the leak. As NPs continue to provide care in a variety of settings, including emergency departments and urgent care areas, they must be familiar with the progression of symptoms that might indicate SIH and be prepared to make appropriate referrals to prevent iatrogenic morbidity. ©2012 The Author(s) Journal compilation ©2012 American Academy of Nurse Practitioners.

  6. Sacroiliac joint dysfunction: a case study.

    PubMed

    Murray, William

    2011-01-01

    Pain is a widespread issue in the United States. Nine of 10 Americans regularly suffer from pain, and nearly every person will experience low back pain at one point in their lives. Undertreated or unrelieved pain costs more than $60 billion a year from decreased productivity, lost income, and medical expenses. The ability to diagnose and provide appropriate medical treatment is imperative. This case study examines a 23-year-old Active Duty woman who is preparing to be involuntarily released from military duty for an easily correctable medical condition. She has complained of chronic low back pain that radiates into her hip and down her leg since experiencing a work-related injury. She has been seen by numerous providers for the previous 11 months before being referred to the chronic pain clinic. Upon the first appointment to the chronic pain clinic, she has been diagnosed with sacroiliac joint dysfunction. This case study will demonstrate the importance of a quality lower back pain assessment.

  7. Rett syndrome and ageing: a case study.

    PubMed

    Jacobsen, K; Viken, A; von Tetzchner, S

    This case study of an elderly women with Rett syndrome is used to consider whether observed changes may be related to physiological processes involved in ageing or environmental adaptations, which is important for delivery of rehabilitation. The life story of a woman with Rett syndrome who lived to the age of 60 is presented. It is based on medical records, older and more recent videotapes, and interviews with her sister and care staff. After 21 years without walking, following intensive physiotherapy, she regained the ability to walk without support. She also showed improvement in hand use a few years before she died. During the early regression she appeared to lose social interest. The interest improved after some time, but she remained wary of people she did not know. The walking and hand use indicate that these functions may have been present to a greater extent than assumed by people in the environment and that her poor function reflects dyspraxia and lack of opportunity and training rather than lack of ability. Although more studies of elderly women with Rett syndrome is needed to answer whether the observed changes were due to physiological processes involved in ageing or environmental adaptations, the present case story demonstrates that identification of females with Rett syndrome is important at all age levels.

  8. Case Study of the California Cement Industry

    SciTech Connect

    Coito, Fred; Powell, Frank; Worrell, Ernst; Price, Lynn; Friedmann, Rafael

    2005-05-01

    California is the largest cement producing state in theU.S., accounting for between 10 percent and 15 percent of U.S. cementproduction and cement industry employment. The cement industry inCalifornia consists of 31 sites that consume large amounts of energy,annually: 1,600 GWh of electricity, 22 million therms of natural gas, 2.3million tons of coal, 0.25 tons of coke, and smaller amounts of wastematerials, including tires. The case study summarized in this paperfocused on providing background information, an assessment ofenergy-efficiency opportunities and barriers, and program recommendationsthat can be used by program planners to better target products to thecement industry. The primary approach to this case study involvedwalk-through surveys of customer facilities and in depth interviews withcustomer decision makers and subsequent analysis of collected data. Inaddition, a basic review of the cement production process was developed,and summary cement industry energy and economic data were collected, andanalyzed. The analysis of secondary data provides background informationon the cement industry and identification of potential energy-efficiencyopportunities. The interviews provide some understanding of the customerperspective about implementation of energy-efficiencyprojects.

  9. Robin Williams' suicide: a case study.

    PubMed

    Tohid, Hassaan

    2016-01-01

    The world renowned comedian and four-time Oscar nominated actor Robin Williams died on August 11, 2014. From the outset, the news indicated that his death was believed to be a suicide and this was later confirmed to be true by the autopsy reports. Williams had been suffering from severe depression, which is believed to be the leading contributor to his suicide. In this case study, I will highlight the event of the actor's suicide and the main risk factors along with depression leading to his tragic death. As of the end of 2015, no other case study seemed to have addressed or explored the links between the cause (or causes) and events leading to Robin Williams' suicide. Robin Williams was suffering from relationship problems, financial problems, drug addiction, and major depression. All of these factors led to his suicide. The chances of committing suicide drastically increase in the presence of any of the key risk factors. Unfortunately, the actor Robin Williams was dealing with four of the major risk factors all together, which put him at a high risk of committing suicide and eventually led to his tragic death.

  10. Scheduling job shop - A case study

    NASA Astrophysics Data System (ADS)

    Abas, M.; Abbas, A.; Khan, W. A.

    2016-08-01

    The scheduling in job shop is important for efficient utilization of machines in the manufacturing industry. There are number of algorithms available for scheduling of jobs which depend on machines tools, indirect consumables and jobs which are to be processed. In this paper a case study is presented for scheduling of jobs when parts are treated on available machines. Through time and motion study setup time and operation time are measured as total processing time for variety of products having different manufacturing processes. Based on due dates different level of priority are assigned to the jobs and the jobs are scheduled on the basis of priority. In view of the measured processing time, the times for processing of some new jobs are estimated and for efficient utilization of the machines available an algorithm is proposed and validated.

  11. The Effect of Using Case Studies in Business Statistics

    ERIC Educational Resources Information Center

    Pariseau, Susan E.; Kezim, Boualem

    2007-01-01

    The authors evaluated the effect on learning of using case studies in business statistics courses. The authors divided students into 3 groups: a control group, a group that completed 1 case study, and a group that completed 3 case studies. Results evidenced that, on average, students whom the authors required to complete a case analysis received…

  12. The Effect of Using Case Studies in Business Statistics

    ERIC Educational Resources Information Center

    Pariseau, Susan E.; Kezim, Boualem

    2007-01-01

    The authors evaluated the effect on learning of using case studies in business statistics courses. The authors divided students into 3 groups: a control group, a group that completed 1 case study, and a group that completed 3 case studies. Results evidenced that, on average, students whom the authors required to complete a case analysis received…

  13. Microcomputer versus mainframe simulations: A case study

    NASA Technical Reports Server (NTRS)

    Bengtson, Neal M.

    1988-01-01

    The research was conducted to two parts. Part one consisted of a study of the feasibility of running the Space Transportation Model simulation on an office IBM-AT. The second part was to design simulation runs so as to study the effects of certain performance factors on the execution of the simulation model. The results of this research are given in the two reports which follow: Microcomputer vs. Mainframe Simulation: A Case Study and Fractional Factorial Designs of Simulation Runs for the Space Transportation System Operations Model. In the first part, a DOS batch job was written in order to simplify the execution of the simulation model on an office microcomputer. A comparison study was then performed of running the model on NASA-Langley's mainframe computer vs. running on the IBM-AT microcomputer. This was done in order to find the advantages and disadvantages of running the model on each machine with the objective of determining if running of the office PC was practical. The study concluded that it was. The large number of performance parameters in the Space Transportation model precluded running a full factorial design needed to determine the most significant design factors. The second report gives several suggested fractional factorial designs which require far fewer simulation runs in order to determine which factors have significant influence on results.

  14. Building Energy Information Systems: User Case Studies

    SciTech Connect

    Granderson, Jessica; Piette, Mary Ann; Ghatikar, Girish

    2010-03-22

    Measured energy performance data are essential to national efforts to improve building efficiency, as evidenced in recent benchmarking mandates, and in a growing body of work that indicates the value of permanent monitoring and energy information feedback. This paper presents case studies of energy information systems (EIS) at four enterprises and university campuses, focusing on the attained energy savings, and successes and challenges in technology use and integration. EIS are broadly defined as performance monitoring software, data acquisition hardware, and communication systems to store, analyze and display building energy information. Case investigations showed that the most common energy savings and instances of waste concerned scheduling errors, measurement and verification, and inefficient operations. Data quality is critical to effective EIS use, and is most challenging at the subsystem or component level, and with non-electric energy sources. Sophisticated prediction algorithms may not be well understood but can be applied quite effectively, and sites with custom benchmark models or metrics are more likely to perform analyses external to the EIS. Finally, resources and staffing were identified as a universal challenge, indicating a need to identify additional models of EIS use that extend beyond exclusive in-house use, to analysis services.

  15. Microgravity isolation system design: A case study

    NASA Technical Reports Server (NTRS)

    Hampton, R. D.; Knospe, C. R.; Allaire, P. E.; Grodsinsky, C. M.

    1994-01-01

    Many acceleration-sensitive, microgravity science experiments will require active vibration isolation from manned orbiters on which they will be mounted. The isolation problem, especially in the case of a tethered payload, is a complex three-dimensional one that is best suited to modern-control design methods. In this paper, extended H(sub 2) synthesis is used to design an active isolator (i.e., controller) for a realistic single-input-multiple-output (SIMO) microgravity vibration isolation problem. Complex mu-analysis methods are used to analyze the isolation system with respect to sensor, actuator, and umbilical uncertainties. The paper fully discusses the design process employed and the insights gained. This design case study provides a practical approach for isolation problems of greater complexity. Issues addressed include a physically intuitive state-space description of the system, disturbance and noise filters, filters for frequency weighting, and uncertainty models. The controlled system satisfies all the performance specifications and is robust with respect to model uncertainties.

  16. Obsessional Slowness in College Students: Case Studies

    ERIC Educational Resources Information Center

    Johnson, Aleta

    2014-01-01

    Cases of obsessional slowness, a variant of obsessive compulsive disorder, have been documented in case literature regarding relatively low functioning populations. However, obsessional slowness can also present in higher functioning populations, including college and graduate students, as illustrated here by three case examples from a competitive…

  17. Obsessional Slowness in College Students: Case Studies

    ERIC Educational Resources Information Center

    Johnson, Aleta

    2014-01-01

    Cases of obsessional slowness, a variant of obsessive compulsive disorder, have been documented in case literature regarding relatively low functioning populations. However, obsessional slowness can also present in higher functioning populations, including college and graduate students, as illustrated here by three case examples from a competitive…

  18. Unraveling phonological conspiracies: A case study

    PubMed Central

    Dinnsen, Daniel A.; Gierut, Judith A.; Morrisette, Michele L.; Rose, Darcy E.

    2015-01-01

    This paper focuses on three seemingly unrelated error patterns in the sound system of a child with a phonological delay, Child 218 (male, age 4 years; 6 months) and ascribes those error patterns to a larger conspiracy to eliminate fricatives from the phonetic inventory. Employing Optimality Theory for its advantages in characterizing conspiracies, our analysis offers a unified account of the observed repairs. The contextual restrictions on those repairs are, moreover, attributed to early developmental prominence effects, which are independently manifested in another error pattern involving rhotic consonants. Comparisons are made with a published case study involving a different implementation of the same conspiracy, the intent being to disambiguate the force behind certain error patterns. The clinical implications of the account are also considered. PMID:25000372

  19. Nocturnal bruxism and hypnotherapy: a case study.

    PubMed

    Dowd, E Thomas

    2013-01-01

    This article describes a case study of a hypnotherapeutic treatment of nocturnal bruxism. The author saw the client for a total of 7 sessions. Hypnotherapy was interspersed with an exploration of tacit and initially denied hostility in the client's life as well as aspects of a somewhat difficult childhood. At the end, the bruxism had disappeared. Follow-up 1 year later indicated that the bruxism had not returned, and the client had become more assertive in her relations with others and had more exploratory activities in her life directions. The latter had not been dealt with in therapy. Thus, there appeared to be a "ripple effect" of successful therapy from one part of her life into its other aspects.

  20. Unraveling phonological conspiracies: A case study.

    PubMed

    Dinnsen, Daniel A; Gierut, Judith A; Morrisette, Michele L; Rose, Darcy E

    2014-01-01

    This paper focuses on three seemingly unrelated error patterns in the sound system of a child with a phonological delay, Child 218 (male, age 4 years 6 months) and ascribes those error patterns to a larger conspiracy to eliminate fricatives from the phonetic inventory. Employing Optimality Theory for its advantages in characterizing conspiracies, our analysis offers a unified account of the observed repairs. The contextual restrictions on those repairs are, moreover, attributed to early developmental prominence effects, which are independently manifested in another error pattern involving rhotic consonants. Comparisons are made with a published case study involving a different implementation of the same conspiracy, the intent being to disambiguate the force behind certain error patterns. The clinical implications of the account are also considered.