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1. Comet 81p/Wild 2 under a Microscope

Author

Brownlee, Don, Tsou, Peter, Aléon, Jérôme, Alexander, Conel M. O'D., Araki, Tohru, Bajt, Sasa, Baratta, Giuseppe A., Bastien, Ron, Bland, Phil, Bleuet, Pierre, Borg, Janet, Bradley, John P., Brearley, Adrian, Brenker, F., Brennan, Sean, Bridges, John C., Browning, Nigel D., Brucato, John R., Bullock, E., Burchell, Mark J., Busemann, Henner, Butterworth, Anna, Chaussidon, Marc, Cheuvront, Allan, Chi, Miaofang, Cintala, Mark J., Clark, B. C., Clemett, Simon J., Cody, George, Colangeli, Luigi, Cooper, George, Cordier, Patrick, Daghlian, C., Dai, Zurong, D'Hendecourt, Louis, Djouadi, Zahia, Dominguez, Gerardo, Duxbury, Tom, Dworkin, Jason P., Ebel, Denton S., Economou, Thanasis E., Fakra, Sirine, Fairey, Sam A. J., Fallon, Stewart, Ferrini, Gianluca, Ferroir, T., Fleckenstein, Holger, Floss, Christine, Flynn, George, Franchi, Ian A., Fries, Marc, Gainsforth, Z., Gallien, J.-P., Genge, Matt, Gilles, Mary K., Gillet, Philipe, Gilmour, Jamie, Glavin, Daniel P., Gounelle, Matthieu, Grady, Monica M., Graham, Giles A., Grant, P. G., Green, Simon F., Grossemy, Faustine, Grossman, Lawrence, Grossman, Jeffrey N., Guan, Yunbin, Hagiya, Kenji, Harvey, Ralph, Heck, Philipp, Herzog, Gregory F., Hoppe, Peter, Hörz, Friedrich, Huth, Joachim, Hutcheon, Ian D., Ignatyev, Konstantin, Ishii, Hope, Ito, Motoo, Jacob, Damien, Jacobsen, Chris, Jacobsen, Stein, Jones, Steven, Joswiak, David, Jurewicz, Amy, Kearsley, Anton T., Keller, Lindsay P., Khodja, H., Kilcoyne, A. L. David, Kissel, Jochen, Krot, Alexander, Langenhorst, Falko, Lanzirotti, Antonio, Le, Loan, Leshin, Laurie A., Leitner, J., Lemelle, L., Leroux, Hugues, Liu, Ming-Chang, Leuning, K., Lyon, Ian, MacPherson, Glen, Marcus, Matthew A., Marhas, Kuljeet, Marty, Bernard, Matrajt, Graciela, McKeegan, Kevin, Meibom, Anders, Mennella, Vito, Messenger, Keiko, Messenger, Scott, Mikouchi, Takeshi, Mostefaoui, Smail, Nakamura, Tomoki, Nakano, T., Newville, M., Nittler, Larry R., Ohnishi, Ichiro, Ohsumi, Kazumasa, Okudaira, Kyoko, Papanastassiou, Dimitri A., Palma, Russ, Palumbo, Maria E., Pepin, Robert O., Perkins, David, Perronnet, Murielle, Pianetta, P., Rao, William, Rietmeijer, Frans J. M., Robert, François, Rost, D., Rotundi, Alessandra, Ryan, Robert, Sandford, Scott A., Schwandt, Craig S., See, Thomas H., Schlutter, Dennis, Sheffield-Parker, J., Simionovici, Alexandre, Simon, Steven, Sitnitsky, I., Snead, Christopher J., Spencer, Maegan K., Stadermann, Frank J., Steele, Andrew, Stephan, Thomas, Stroud, Rhonda, Susini, Jean, Sutton, S. R., Suzuki, Y., Taheri, Mitra, Taylor, Susan, Teslich, Nick, Tomeoka, Kazu, Tomioka, Naotaka, Toppani, Alice, Trigo-Rodríguez, Josep M., Troadec, David, Tsuchiyama, Akira, Tuzzolino, Anthony J., Tyliszczak, Tolek, Uesugi, K., Velbel, Michael, Vellenga, Joe, Vicenzi, E., Vincze, L., Warren, Jack, Weber, Iris, Weisberg, Mike, Westphal, Andrew J., Wirick, Sue, Wooden, Diane, Wopenka, Brigitte, Wozniakiewicz, Penelope, Wright, Ian, Yabuta, Hikaru, Yano, Hajime, Young, Edward D., Zare, Richard N., Zega, Thomas, Ziegler, Karen, Zimmerman, Laurent, Zinner, Ernst, and Zolensky, Michael more...

Published
2006
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3. Comet 81P/Wild 2 Under a Microscope

Author

Brownlee, Don, Tsou, Peter, Aleon, Jerome, Alexander, Conel M. O'D., Araki, Tohru, Bajt, Sasa, Baratta, Giuseppe A., Bastien, Ron, Bland, Phil, Bleuet, Pierre, Borg, Janet, Bradley, John P., Brearley, Adrian, Brenker, F., Brennan, Sean, Bridges, John C., Browning, Nigel D., Brucato, John R., Bullock, E., Burchell, Mark J., Busemann, Henner, Butterworth, Anna, Chaussidon, Marc, Cheuvront, Allan, Chi, Miaofang, Cintala, Mark J., Clark, B. C., Clemett, Simon J., Cody, George, Colangeli, Luigi, Cooper, George, Cordier, Patrick, Daghlian, C., Dai, Zurong, D'Hendecourt, Louis, Djouadi, Zahia, Dominguez, Gerardo, Duxbury, Tom, Dworkin, Jason P., Ebel, Denton S., Economou, Thanasis E., Fakra, Sirine, Fairey, Sam A. J., Fallon, Stewart, Ferrini, Gianluca, Ferroir, T., Fleckenstein, Holger, Floss, Christine, Flynn, George, Franchi, Ian A., Fries, Marc, Gainsforth, Z., Gallien, J.-P., Genge, Matt, Gilles, Mary K., Gillet, Philipe, Gilmour, Jamie, Glavin, Daniel P., Gounelle, Matthieu, Grady, Monica M., Graham, Giles A., Grant, P. G., Green, Simon F., Grossemy, Faustine, Grossman, Lawrence, Grossman, Jeffrey N., Guan, Yunbin, Hagiya, Kenji, Harvey, Ralph, Heck, Philipp, Herzog, Gregory F., Hoppe, Peter, Horz, Friedrich, Huth, Joachim, Hutcheon, Ian D., Ignatyev, Konstantin, Ishii, Hope, Ito, Motoo, Jacob, Damien, Jacobsen, Chris, Jacobsen, Stein, Jones, Steven, Joswiak, David, Jurewicz, Amy, Kearsley, Anton T., Keller, Lindsay P., Khodja, H., Kilcoyne, A. L. David, Kissel, Jochen, Krot, Alexander, Langenhorst, Falko, Lanzirotti, Antonio, Le, Loan, Leshin, Laurie A., Leitner, J., Lemelle, L., Leroux, Hugues, Liu, Ming-Chang, Luening, K., Lyon, Ian, MacPherson, Glen, Marcus, Matthew A., Marhas, Kuljeet, Marty, Bernard, Matrajt, Graciela, McKeegan, Kevin, Meibom, Anders, Mennella, Vito, Messenger, Keiko, Messenger, Scott, Mikouchi, Takashi, Mostefaoui, Smail, Nakamura, Tomoki, Nakano, T., Newville, M., ittler, Larry R., Ohnishi, Ichiro, Ohsumi, Kazumasa, 奥平, 恭子, Papanastassiou, Dimitri A., Palma, Russ, Palumbo, Maria E., Pepin, Robert O., Perkins, David, Perronnet, Murielle, Pianetta, P., Rao, William, Rietmeijer, Frans J. M., Robert, Francois, Rost, D., Rotundi, Alessandra, Ryan, Robert, Sandford, Scott A., Schwandt, Craig S., See, Thomas H., Schlutter, Dennis, Sheffield-Parker, J., Simionovici, Alexandre, Simon, Steven, Sitnitsky, I., Snead, Christopher J., Spencer, Maegan K., Stadermann, Frank J., Steele, Andrew, Stephan, Thomas, Stroud, Rhonda, Susini, Jean, Sutton, S. R., Suzuki, Y., Taheri, Mitra, Taylor, Susan, Teslich, Nick, Tomeoka, Kazu, Tomioka, Naotaka, Toppani, Alice, Trigo-Rodriguez, Josep M., Troadec, David, Tsuchiyama, Akira, Tuzzolino, Anthony J., Tyliszczak, Tolek, Uesugi, K., Velbel, Michael, Vellenga, Joe, Vicenzi, E., Vincze, L., Warren, Jack, Weber, Iris, Weisberg, Mike, Westphal, Andrew J., Wirick, Sue, Wooden, Diane, Wopenka, Brigitte, Wozniakiewicz, Penelope, Wright, Ian, Yabuta, Hikaru, 矢野, 創, Young, Edward D., Zare, Richard N., Zega, Thomas, Ziegler, Karen, Zimmerman, Laurent, Zinner, Ernst, Zolensky, Michael, Okudaira, Kyoko, Yano, Hajime, Brownlee, Don, Tsou, Peter, Aleon, Jerome, Alexander, Conel M. O'D., Araki, Tohru, Bajt, Sasa, Baratta, Giuseppe A., Bastien, Ron, Bland, Phil, Bleuet, Pierre, Borg, Janet, Bradley, John P., Brearley, Adrian, Brenker, F., Brennan, Sean, Bridges, John C., Browning, Nigel D., Brucato, John R., Bullock, E., Burchell, Mark J., Busemann, Henner, Butterworth, Anna, Chaussidon, Marc, Cheuvront, Allan, Chi, Miaofang, Cintala, Mark J., Clark, B. C., Clemett, Simon J., Cody, George, Colangeli, Luigi, Cooper, George, Cordier, Patrick, Daghlian, C., Dai, Zurong, D'Hendecourt, Louis, Djouadi, Zahia, Dominguez, Gerardo, Duxbury, Tom, Dworkin, Jason P., Ebel, Denton S., Economou, Thanasis E., Fakra, Sirine, Fairey, Sam A. J., Fallon, Stewart, Ferrini, Gianluca, Ferroir, T., Fleckenstein, Holger, Floss, Christine, Flynn, George, Franchi, Ian A., Fries, Marc, Gainsforth, Z., Gallien, J.-P., Genge, Matt, Gilles, Mary K., Gillet, Philipe, Gilmour, Jamie, Glavin, Daniel P., Gounelle, Matthieu, Grady, Monica M., Graham, Giles A., Grant, P. G., Green, Simon F., Grossemy, Faustine, Grossman, Lawrence, Grossman, Jeffrey N., Guan, Yunbin, Hagiya, Kenji, Harvey, Ralph, Heck, Philipp, Herzog, Gregory F., Hoppe, Peter, Horz, Friedrich, Huth, Joachim, Hutcheon, Ian D., Ignatyev, Konstantin, Ishii, Hope, Ito, Motoo, Jacob, Damien, Jacobsen, Chris, Jacobsen, Stein, Jones, Steven, Joswiak, David, Jurewicz, Amy, Kearsley, Anton T., Keller, Lindsay P., Khodja, H., Kilcoyne, A. L. David, Kissel, Jochen, Krot, Alexander, Langenhorst, Falko, Lanzirotti, Antonio, Le, Loan, Leshin, Laurie A., Leitner, J., Lemelle, L., Leroux, Hugues, Liu, Ming-Chang, Luening, K., Lyon, Ian, MacPherson, Glen, Marcus, Matthew A., Marhas, Kuljeet, Marty, Bernard, Matrajt, Graciela, McKeegan, Kevin, Meibom, Anders, Mennella, Vito, Messenger, Keiko, Messenger, Scott, Mikouchi, Takashi, Mostefaoui, Smail, Nakamura, Tomoki, Nakano, T., Newville, M., ittler, Larry R., Ohnishi, Ichiro, Ohsumi, Kazumasa, 奥平, 恭子, Papanastassiou, Dimitri A., Palma, Russ, Palumbo, Maria E., Pepin, Robert O., Perkins, David, Perronnet, Murielle, Pianetta, P., Rao, William, Rietmeijer, Frans J. M., Robert, Francois, Rost, D., Rotundi, Alessandra, Ryan, Robert, Sandford, Scott A., Schwandt, Craig S., See, Thomas H., Schlutter, Dennis, Sheffield-Parker, J., Simionovici, Alexandre, Simon, Steven, Sitnitsky, I., Snead, Christopher J., Spencer, Maegan K., Stadermann, Frank J., Steele, Andrew, Stephan, Thomas, Stroud, Rhonda, Susini, Jean, Sutton, S. R., Suzuki, Y., Taheri, Mitra, Taylor, Susan, Teslich, Nick, Tomeoka, Kazu, Tomioka, Naotaka, Toppani, Alice, Trigo-Rodriguez, Josep M., Troadec, David, Tsuchiyama, Akira, Tuzzolino, Anthony J., Tyliszczak, Tolek, Uesugi, K., Velbel, Michael, Vellenga, Joe, Vicenzi, E., Vincze, L., Warren, Jack, Weber, Iris, Weisberg, Mike, Westphal, Andrew J., Wirick, Sue, Wooden, Diane, Wopenka, Brigitte, Wozniakiewicz, Penelope, Wright, Ian, Yabuta, Hikaru, 矢野, 創, Young, Edward D., Zare, Richard N., Zega, Thomas, Ziegler, Karen, Zimmerman, Laurent, Zinner, Ernst, Zolensky, Michael, Okudaira, Kyoko, and Yano, Hajime more...

Abstract

著者人数: 183名

Published
2015

4. Fatigue in Pilots of Remotely Piloted Aircraft Before and After Shift Work Adjustment

Author

Tvaryanas, Anthony P. and Macpherson, Glen D.

Abstract

The article of record as published may be located at https://doi.org/10.3357/ASEM.2455.2009 Remotely piloted aircraft (RPA) with long endurance allow near-continuous operations, necessitating the implementation of shift work for crewmembers to provide the necessary manning of ground control stations. Shift work has a well-known association with fatigue, degraded work performance, and an increased risk for errors and accidents. This study presents the results of a follow-up survey of a particular population of shift-working RPA crewmembers 1 yr after modification of their shift work schedule. Methods: A cross-sectional survey of 66 RPA crewmembers was conducted using a collection of validated fatigue scales. This data was compared to survey data collected a year prior from the same population and from a reference group of non-shift-working aircrew. Shift system features and individual and situational differences associated with fatigue were explored. Additionally, several alternative types of shift schedules were assessed through modeling and simulation. Results: The study found no significant reduction in reported fatigue despite prior modifications to the shift work schedule to increase opportunities for recovery. Months shift working, sleep quality, and disturbances in family and social activities were associated with overall fatigue scores. Approximately half of those surveyed met criteria for occupationally significant fatigue. Months shift working, use of on-duty napping, and fatigue scores were predictive of those with occupationally significant fatigue. Modeling of feasible variants of the current shift work schedule failed to reveal a significantly improved alternative schedule. Conclusions: Collectively, the results demonstrate a persistent problem with chronic fatigue in this study population, likely reflective of continued inadequate opportunities for recovery and restorative sleep. more...

Published
2009

5. Educators' views and practices regarding high stakes testing in grade 12 mathematics classrooms

Author

MacPherson, Glen Eric

Abstract

This dissertation is a case study of the views and practices of mathematics teachers in two British Columbia high schools - their pedagogical, professional, and personal responses to high stakes testing, and the factors that mediate those responses, such as administrators, department heads, other teachers, students, and external influences. There was homogeneity across the two sites in how the teachers approached the Principles of Mathematics 12 course. 'Examination-style content' was reflected in teachers' lectures, assessment and evaluation, and classroom resources. Banks of previous examination items were a common resource at the two sites. Lecturing was the dominant mode of introducing content to students, and there were instances of the use of particular teaching practices - such as test coaching - aimed at improving examination performance. Evidence of downward examination pressure into earlier grades was found in one site. Administrators reported that provincial examinations significantly mediated administrative decisions on staffing, daily scheduling, yearly timetabling, and school-level programs. Teachers and others perceived media rankings of test scores as powerful but simplistic. Students expressed confidence in their teachers, reporting no undue levels of stress as a result of provincials examinations. These findings are consistent with other research that claims there are significant relationships between external testing and teaching practices, and supports the findings of previous examination-impact research from Anderson, Muir, Bateson, Blackmore, and Rogers (1990), and Wideen, O'Shea, Pye, and Ivany (1997). more...

Published
2007
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6. Elemental compositions of comet 81P/wild 2 samples collected by stardust

Author

Flynn, George J., Bleuet, Pierre, Borg, Janet, Bradley, John P., Brenker, Frank E., Brennen, Sean, Bridges, John, Brownlee, Don E., Bullock, Emma S., Burghammer, Manfred, Clark, Benton C., Dai, Zu Rong, Daghlian, Charles P., Djouadi, Zahia, Fakra, Sirine, Ferroir, Tristan, Floss, Christine, Franchi, Ian A., Gainsforth, Zack, Gallien, Jean-Paul, Gillet, Philippe, Grant, Patrick G., Graham, Giles A., Green, Simon F., Grossemy, Faustine, Heck, Philipp R., Herzog, Gregory F., Hoppe, Peter, Hörz, Friedrich, Huth, Joachim, Ignatyev, Konstantin, Ishii, Hope A., Janssens, Koen, Joswiak, David, Kearsley, Anton T., Khodja, Hicham, Lanzirotti, Antonio, Leitner, Jan, Lemelle, Laurence, Leroux, Hugues, Luening, Katharina, MacPherson, Glen J., Marhas, Kuljeet K., Marcus, Matthew A., Matrajt, Graciela, Nakamura, Tomoki, Nakamura-Messenger, Keiko, Nakano, Tsukasa, Newville, Matthew, Papanastassiou, Dimitri A., Pianetta, Piero, Rao, William, Riekel, Christian, Rietmeijer, Frans J.M., Rost, Detlef, Schwandt, Craig S., See, Thomas H., Sheffield-Parker, Julia, Simionovici, Alexandre, Sitnitsky, Ilona, Snead, Christopher J., Stadermann, Frank J., Stephan, Thomas, Stroud, Rhonda M., Susini, Jean, Suzuki, Yoshio, Sutton, Stephen R., Taylor, Susan, Teslich, Nick, Troadec, D., Tsou, Peter, Tsuchiyama, Akira, Uesugi, Kentaro, Vekemans, Bart, Vicenzi, Edward P., Vincze, Laszlo, Westphal, Andrew J., Wozniakiewicz, Penelope J., Zinner, Ernst, Zolensky, Michael E., Flynn, George J., Bleuet, Pierre, Borg, Janet, Bradley, John P., Brenker, Frank E., Brennen, Sean, Bridges, John, Brownlee, Don E., Bullock, Emma S., Burghammer, Manfred, Clark, Benton C., Dai, Zu Rong, Daghlian, Charles P., Djouadi, Zahia, Fakra, Sirine, Ferroir, Tristan, Floss, Christine, Franchi, Ian A., Gainsforth, Zack, Gallien, Jean-Paul, Gillet, Philippe, Grant, Patrick G., Graham, Giles A., Green, Simon F., Grossemy, Faustine, Heck, Philipp R., Herzog, Gregory F., Hoppe, Peter, Hörz, Friedrich, Huth, Joachim, Ignatyev, Konstantin, Ishii, Hope A., Janssens, Koen, Joswiak, David, Kearsley, Anton T., Khodja, Hicham, Lanzirotti, Antonio, Leitner, Jan, Lemelle, Laurence, Leroux, Hugues, Luening, Katharina, MacPherson, Glen J., Marhas, Kuljeet K., Marcus, Matthew A., Matrajt, Graciela, Nakamura, Tomoki, Nakamura-Messenger, Keiko, Nakano, Tsukasa, Newville, Matthew, Papanastassiou, Dimitri A., Pianetta, Piero, Rao, William, Riekel, Christian, Rietmeijer, Frans J.M., Rost, Detlef, Schwandt, Craig S., See, Thomas H., Sheffield-Parker, Julia, Simionovici, Alexandre, Sitnitsky, Ilona, Snead, Christopher J., Stadermann, Frank J., Stephan, Thomas, Stroud, Rhonda M., Susini, Jean, Suzuki, Yoshio, Sutton, Stephen R., Taylor, Susan, Teslich, Nick, Troadec, D., Tsou, Peter, Tsuchiyama, Akira, Uesugi, Kentaro, Vekemans, Bart, Vicenzi, Edward P., Vincze, Laszlo, Westphal, Andrew J., Wozniakiewicz, Penelope J., Zinner, Ernst, and Zolensky, Michael E. more...

Abstract

We measured the elemental compositions of material from 23 particles in aerogel and from residue in seven craters in aluminum foil that was collected during passage of the Stardust spacecraft through the coma of comet 81P/Wild 2. These particles are chemically heterogeneous at the largest size scale analyzed (-180 ng). The mean elemental composition of this Wild 2 material is consistent with the Cl meteorite composition, which is thought to represent the bulk composition of the solar system, for the elements Mg, Si, Mn, Fe, and Ni to 35%, and for Ca and Ti to 60%. The elements Cu, Zn, and Ga appear enriched in this Wild 2 material, which suggests that the Cl meteorites may not represent the solar system composition for these moderately volatile minor elements. more...

Published
2006

12. Altitude Decompression Sickness Susceptibility.

Author

MacPherson, Glen

Abstract

A letter to the editor is presented in response to the article "Altitude Decompression Sickness Susceptibility: Influence of Anthropometric and Physiologic Variables," by J. T. Webb, N. Kannan and A. A. Pilmanis in a 2005 issue. more...

Published
2007

13. You're the flight surgeon. Syncope vs. seizure.

Author

MacPherson G

Subjects
Diagnosis, Differential, Electroencephalography, Humans, Male, Seizures diagnosis, Syncope diagnosis, Tilt-Table Test, Aerospace Medicine, Epilepsy diagnosis, Work Capacity Evaluation
Published
2007