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2. Tenecteplase versus standard of care for minor ischaemic stroke with proven occlusion (TEMPO-2): a randomised, open label, phase 3 superiority trial

Author

Salluzzi, Marina, Blenkin, Nicole, Dueck, Ashley, Doram, Craig, Zhang, Qiao, Kenney, Carol, Ryckborst, Karla, Bohn, Shelly, Collier, Quentin, Taylor, Frances, Lethebe, B. Cord, Jambula, Anitha, Sage, Kayla, Toussaint, Lana, Save, Supryia, Lee, Jaclyn, Laham, N, Sultan, A.A., Deepak, A., Sitaram, A., Demchuk, Andrew M., Lockey, A., Micielli, A., Wadhwa, A., Arabambi, B., Graham, B., Bogiatzi, Chrysi, Doshi, Darshan, Chakraborty, D., Kim, Diana, Vasquez, D, Singh, D, Tse, Dominic, Harrison, E., Smith, E.E., Teleg, E., Klourfeld, E., Klein, G., Sebastian, I.A., Evans, J, Hegedus, J, Kromm, J, Lin, K, Ignacio, K, Ghavami, Kimia, Ismail, M., Moores, M., Panzini, M.A., Boyko, M., Almekhlafi, M.A., Newcommon, Nancy, Maraj, N., Imoukhuede, O., Volny, O., Stys, Peter, Couillard, Phillipe, Ojha, P., Eswaradass, P., Joundi, Raed, Singh, R., Asuncion, R.M., Muir, R.T., Dey, S., Mansoor, S., Wasyliw, S., Nagendra, S., Hu, Sherry, Althubait, S., Chen, S., Bal, S., Van Gaal, Stephen, Peters, Steven, Ray, Sucharita, Chaturvedi, S., Subramaniam, Suresh, Fu, Vivian, Villaluna, K., Maclean, G., King-Azote, P., Ma, C., Plecash, A., Murphy, C., Gorman, J., Wilson, L., Zhou, L., Benevente, O., Teal, P., Yip, S., Mann, S., Dewar, B., Demetroff, M., Shamloul, R., Beardshaw, R., Roberts, S., Blaquiere, D., Stotts, G., Shamy, M., Bereznyakova, O., Fahed, R., Alesefir, W., Lavoie, Suzy, Hache, A., Collard, K, Mackey, A., Gosselin-Lefebvre, S., Verreault, S., Beauchamp, B., Lambourn, L., Khaw, A., Mai, L., Sposato, L., Bres Bullrich, M., Azarpazhooh, R., Fridman, S., Kapoor, A., Southwell, A., Bardi, E., Fatakdawala, I., Kamra, M, Lopes, K., Popel, N., Norouzi, V., Liu, A., Liddy, A.M., Ghoari, B., Hawkes, C., Enriquez, C.A., Gladstone, D.J., Manosalva Alzate, H.A., Khosravani, H., Hopyan, J.J., Sivakumar, K., Son, M., Boulos, M.I., Hamind, M.A., Swartz, R.H., Murphy, R., Reiter, S., Fitzpatrick, T., Bhandari, V., Good, J., Penn, M., Naylor, M., Frost, S., Cayley, A., Akthar, F., Williams, J., Kalman, L., Crellin, L., Wiegner, R., Singh, R.S., Stewart, T., To, W., Singh, S., Pikula, A., Jaigobin, C., Carpani, F., Silver, F., Janssen, H., Schaafsma, J., del Campo, M., Alskaini, M., Rajendram, P., Fairall, P., Granfield, B., Crawford, D., Jabs, J., White, L., Sivakumar, L., Piquette, L., Nguyen, T., Nomani, A., Wagner, A., Alrohimi, A., Butt, A., D'Souza, A., Gajurel, B., Vekhande, C., Kamble, H., Kalashyan, H., Lloret, M., Benguzzi, M., Arsalan, N., Ishaque, N., Ashayeriahmadabad, R., Samiento, R., Hosseini, S., Kazi, S., Das, S., Sugumar, T., Selchen, D., Kostyrko, P., Muccilli, A., Saposnik, A.G., Vandervelde, C., Ratnayake, K., McMillan, S., Katsanos, A., Shoamanesh, A., Sahlas, D.J., Naidoo, V., Todorov, V., Toma, H., Brar, J., Lee, J., Horton, M., Shand, E., Weatherby, S., Jin, A., Durafourt, B., Jalini, S., Gardner, A., Tyson, C., Junk, E., Foster, K., Bolt, K., Sylvain, N., Maley, S., Urroz, L., Peeling, L., Kelly, M., Whelan, R., Cooley, R., Teitelbaum, J., Boutayeb, A., Moore, A., Cole, E., Waxman, L., Ben-Amor, N., Sanchez, R., Khalil, S., Nehme, A., Legault, C., Tampieri, D., Ehrensperger, E., Vieira, L., Cortes, M., Angle, M., Hannouche, M., Badawy, M., Werner, K., Wieszmuellner, S., Langer, A., Gisold, A., Zach, H., Rommer, P., Macher, S., Blechinger, S., Marik, W., Series, W., Baumgartinger, M., Krebs, S., Koski, J., Eirola, S., Ivanoff, T., Erakanto, A., Kupari, L., Sibolt, G., Panula, J., Tomppo, L., Tiainen, M., Ahlstrom, M., Martinez Majander, N., Suomalainen, O., Raty, S., Levi, C., Kerr, E., Allen, J., Kaauwai, L.P., Belevski, L., Russell, M., Ormond, S., Chew, A., Loiselle, A., Royan, A., Hughes, B., Garcia Esperon, C., Pepper, E., Miteff, F., He, J., Lycett, M., Min, M., Murray, N., Pavey, N., Starling de Barros, R., Gangadharan, S., Dunkerton, S., Waller, S., Canento Sanchez, T., Wellings, T., Edmonds, G., Whittaker, K.A., Ewing, M., Lee, P., Singkang, R., McDonald, A., Dos Santos, A., Shin, C., Jackson, D., Tsoleridis, J., Fisicchia, L., Parsons, N., Shenoy, N., Smith, S., Sharobeam, A., Balabanski, A., Park, A., Williams, C., Pavlin-Premri, D., Rodrigues, E., Alemseged, F., Ng, F., Zhao, H., Beharry, J., Ng, J.L., Williamson, J., Wong, J.Z.W., Li, K., Kwan, M.K., Valente, M., Yassi, N., Yogendrakumar, V., McNamara, B., Buchanan, C., McCarthy, C., Thomas, G., Stephens, K., Chung, M., Chung, M.F., Tang, M., Busch, T., Frost, T., Lee, R., Stuart, N., Pachani, N., Menon, A., Borojevic, B., Linton, C.M., Garcia, G., Callaly, E.P., Dewey, H., Liu, J., Chen, J., Wong, J., Nowak, K., To, K., Lizak, N.S., Bhalala, O., Park, P., Tan, P., Martins, R., Cody, R., Forbes, R., Chen, S.K., Ooi, S., Tu, S., Dang, Y.L., Ling, Z., Cranefield, J., Drew, R., Tan, A., Kurunawai, C., Harvey, J., Mahadevan, J.J., Cagi, L., Palanikumar, L., Chia, L.N., Goh, R., El-Masri, S., Urbi, B., Rapier, C., Berrill, H., McEvoy, H., Dunning, R., Kuriakose, S., Chad, T., Sapaen, V., Sabet, A., Shah, D., Yeow, D., Lilley, K., Ward, K., Mozhy Mahizhnan, M., Tan, M., Lynch, C., Coveney, S., Tobin, K., McCabe, J., Marnane, M., Murphy, S., Large, M., Moynihan, B., Boyle, K., Sanjuan, E., Sanchis, M., Boned, S., Pancorbo, O., Sala, V., Garcia, L., Garcia-Tornel, A., Juega, J., Pagola, J., Santana, K., Requena, M., Muchada, M., Olive, M., Lozano, P.J., Rubiera, M., Deck, M., Rodriguez, N., Gomez, B., Reyes Munoz, F.J., Gomez, A.S., Sanz, A.C., Garcia, E.C., Penacoba, G., Ramos, M.E., de Lera Alfonso, M., Feliu, A, Pardo, L., Ramirez, P., Murillo, A., Lopez Dominguez, D., Rodriguez, J., Terceno Izaga, M., Reina, M., Viturro, S.B., Bojaryn, U., Vera Monge, V.A., Silva Blas, Y., R Siew, R., Agustin, S J, Seet, C., Tianming, T., d'Emden, A., Murray, A., Welch, A., Hatherley, K., Day, N., Smith, W., MacRae, E., Mitchell, E.S., Mahmood, A., Elliot, J., Neilson, S., Biswas, V., Brown, C., Lewis, A., Ashton, A., Werring, D., Perry, R., Muhammad, R., Lee, Y.C., Black, A., Robinson, A., Williams, A., Banaras, A., Cahoy, C., Raingold, G., Marinescu, M., Atang, N., Bason, N., Francia, N., Obarey, S., Feerick, S., Joseph, J., Schulz, U., Irons, R., Benjamin, J., Quinn, L., Jhoots, M., Teal, R., Ford, G., Harston, G., Bains, H., Gbinigie, I., Mathieson, P., Sim, C.H., Hayter, E., Kennedy, K., Binnie, L., Priestley, N., Williams, R., Ghatala, R., Stratton, S., Blight, A., Zhang, L., Davies, A., Duffy, H., Roberts, J., Homer, J., Roberts, K., Dodd, K., Cawley, K., Martin, M., Leason, S., Cotgreave, S., Taylor, T., Nallasivan, A., Haider, S., Chakraborty, T., Webster, T., Gil, A., Martin, B., Joseph, B., Cabrera, C., Jose, D., Man, J., Aquino, J., Sebastian, S., Osterdahl, M., Kwan, M., Matthew, M., Ike, N., Bello, P., Wilding, P., Fuentes, R., Shah, R., Mashate, S., Patel, T., Nwanguma, U., Dave, V., Haber, A., Lee, A., O'Sullivan, A., Drumm, B., Dawson, A.C., Matar, T., Roberts, D., Taylor, E., Rounis, E., El-Masry, A., O'Hare, C., Kalladka, D., Jamil, S., Auger, S., Raha, O., Evans, M., Vonberg, F., Kalam, S., Ali Sheikh, A., Jenkins, I.H., George, J., Kwan, J., Blagojevic, J., Saeed, M., Haji-Coll, M., Tsuda, M., Sayed, M., Winterkron, N., Thanbirajah, N., Vittay, O., Karim, R., Smail, R.C., Gauhar, S., Elmamoun, S., Malani, S., Pralhad Kelavkar, S., Hiden, J., Ferdinand, P., Sanyal, R., Varquez, R., Smith, B., Okechukwu, C., Fox, E., Collins, E., Courtney, K., Tauro, S., Patterson, C., McShane, D., Roberts, G., McIImoyle, J., McGuire, K., Fearon, P., Gordon, P., Isaacs, K., Lucas, K., Smith, L., Dews, L., Bates, M., Lawrence, S., Heeley, S., Patel, V., Chin, Y.M., Sims, D., Littleton, E., Khaira, J., Nadar, K., Kieliszkowska, A., Sari, B., Domingos Belo, C., Smith, E., Manolo, E.Y., Aeron-Thomas, J., Doheny, M., Garcia Pardo, M., Recaman, M., Tibajia, M.C., Aissa, M., Mah, Y., Yu, T., Meenakshisundaram, S., Heller, S., Alsukhni, R., Williams, O., Farag, M., Benger, M., Engineer, A., Bayhonan, S., Conway, S., Bhalla, A., Nouvakis, D., Theochari, E., Boyle, F., Teo, J., King-Robson, J., Law, K.Y., Sztriha, L., McGovern, A., Day, D., Mitchell-Douglas, J., Francis, J., Iqbal, A., Punjabivaryani, P., Anonuevo Reyes, J., Anonuevo Reyes, M., Pauls, M., Buch, A., Hedstrom, A., Hutchinson, C., Kirkland, C., Newham, J., Wilkes, G., Fleming, L., Fleck, N., Franca, A., Chwal, B., Oldoni, C., Mantovani, G., Noll, G., Zanella, L., Soma, M., Secchi, T., Borelli, W., Rimoli, B.P., da Cunha Silva, G.H., Machado Galvao Mondin, L.A., Barbosa Cerantola, R., Imthon, A.K., Esaki, A.S., Camilo, M., Vincenzi, O.C., ds Cruz, R.R., Morillos, M.B., Riccioppa Rodrigues, G.G., Santos Ferreira, K., Pazini, A.M., Pena Pereira, M.A., de Albuquerque, A.L.A., Massote Fontanini, C.E., Matinez Rubio, C.F., dos Santos, D.T., Dias, F.A., Alves, F.F.A., Milani, C., Pegorer Santos, B., Winckler, F., De Souza, J.T., Bonome, L.A.M., Cury Silva, V.A., Teodoro, R.S., Modolo, G.P., Ferreira, N.C., Barbosa dos Santos, D.F., dos Santos Moreira, J.C., Cruz Guedes de Morais, A.B., Vieira, J., Mendes, G., de Queiroz, J.P., Coutts, Shelagh B, Ankolekar, Sandeep, Appireddy, Ramana, Arenillas, Juan F, Assis, Zarina, Bailey, Peter, Barber, Philip A, Bazan, Rodrigo, Buck, Brian H, Butcher, Ken S, Camden, Marie-Christine, Campbell, Bruce C V, Casaubon, Leanne K, Catanese, Luciana, Chatterjee, Kausik, Choi, Philip M C, Clarke, Brian, Dowlatshahi, Dar, Ferrari, Julia, Field, Thalia S, Ganesh, Aravind, Ghia, Darshan, Goyal, Mayank, Greisenegger, Stefan, Halse, Omid, Horn, Mackenzie, Hunter, Gary, Imoukhuede, Oje, Kelly, Peter J, Kennedy, James, Kleinig, Timothy J, Krishnan, Kailash, Lima, Fabricio, Mandzia, Jennifer L, Marko, Martha, Martins, Sheila O, Medvedev, George, Menon, Bijoy K, Mishra, Sachin M, Molina, Carlos, Moussaddy, Aimen, Muir, Keith W, Parsons, Mark W, Penn, Andrew M W, Pille, Arthur, Pontes-Neto, Octávio M, Roffe, Christine, Serena, Joaquin, Simister, Robert, Singh, Nishita, Spratt, Neil, Strbian, Daniel, Tham, Carol H, Wiggam, M Ivan, Williams, David J, Willmot, Mark R, Wu, Teddy, Yu, Amy Y X, Zachariah, George, Zafar, Atif, Zerna, Charlotte, and Hill, Michael D

Published
2024
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7. Robotic-Assisted Total Knee Arthroplasty Can Increase Frequency of Achieving Target Limb Alignment in Primary Total Knee Arthroplasty for Preoperative Valgus Deformity

Author

Austin E. Wininger, MD, Bradley S. Lambert, PhD, Thomas C. Sullivan, BS, Timothy S. Brown, MD, Stephen J. Incavo, MD, and Kwan J. Park, MD

Subjects
Total knee arthroplasty, Robotic, Manual, Alignment, Accuracy, Orthopedic surgery, RD701-811
Abstract

Background: Robotic-assisted total knee arthroplasty (rTKA) has been shown to reduce the number of alignment outliers and to improve component positioning compared to manual TKA (mTKA). The primary purpose of this investigation was to compare the frequency of achieving target postoperative limb alignment and component positioning for rTKA vs mTKA. Methods: A retrospective comparative study was performed on 250 patients undergoing primary TKA by 2 fellowship-trained arthroplasty surgeons. Surgeon A performed predominantly rTKA (103 cases) with the ROSA system (Zimmer Biomet, Warsaw, IN) and less frequently mTKA (44 cases) with conventional instrumentation. Surgeon B performed only mTKA (103 cases). Target limb alignment for surgeon A was 0° for all cases and for surgeon B was 2° varus for varus knees and 0° for valgus knees. Radiographic measurements were determined by 2 reviewers. Target zone was set at ± 2 degrees from the predefined target. Results: When comparing rTKA to mTKA performed by different surgeons, there were no differences in the percentage within the target zone (57.28% vs 53.40%, P = .575), but rTKA did result in a greater percentage for cases with preoperative valgus (71.42% vs 44.12%, P = .031). Patient-reported Outcomes Measurement Information System Global-10 physical scores were statistically higher at both 3 (P = .016) and 6 months (P = .001) postoperatively for rTKA compared to mTKA performed by different surgeons. Conclusions: Although experienced surgeons can achieve target limb alignment correction with similar frequency when comparing rTKA to mTKA for all cases, rTKA may achieve target limb alignment with more accuracy for preoperative valgus deformity. Level of Evidence: Retrospective Cohort Study, Level III.

Published
2023
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8. Routine Histopathologic Examination of Bone Obtained During Elective Primary Total Knee Arthroplasty May Not Be Necessary

Author

Colin McNamara, MD, MBA, Kevin Bondar, MD, Thomas C. Sullivan, BS, Terry A. Clyburn, MD, Kwan J. Park, MD, and Timothy S. Brown, MD

Subjects
Cost analysis, Histopathology, Total knee arthroplasty, Cost-effective care, Knee osteoarthritis, Orthopedic surgery, RD701-811
Abstract

Background: Many institutions require the routine collection of pathology samples from every primary total knee arthroplasty (TKA) performed. These policies are controversial, and their cost-effectiveness is difficult to define. We sought to judge the cost-effectiveness of one such policy according to World Health Organization recommendations. Methods: We analyzed 3200 consecutive primary TKAs, comparing our presumed preoperative diagnoses against the diagnoses made by the pathologist. Diagnoses were categorized as concordant (matching), discrepant (not matching but without impact to patient management), or discordant (not matching and resulting in a direct change to patient management). An incremental cost-utility ratio analysis was performed to determine the cost-effectiveness of our institution’s policy to routinely collect pathology samples from every primary TKA performed. Cost-effectiveness was defined by World Health Organization guidelines as a cost of less than $228,090 per quality-adjusted life year gained. Results: Twelve pathology samples were lost before reaching a pathologist. From the remaining 3188 samples, we identified 3158 concordant cases, 29 discrepant diagnoses, and 1 discordant diagnosis. It cost an estimated $10,522.60 to identify each discrepant diagnosis and an estimated $305,155.36 to diagnose one discordant case in our cohort. Our incremental cost-utility ratio analysis revealed that we spent $305,155.36 to gain 0 quality-adjusted life years for our patients. Conclusions: Routine histopathologic analysis of TKA samples was cost-ineffective in our patient cohort and may not be necessary during routine TKA.

Published
2023
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12. Outcomes in children of women with type 2 diabetes exposed to metformin versus placebo during pregnancy (MiTy Kids): a 24-month follow-up of the MiTy randomised controlled trial

Author

Feig, DS, Galper, A, Cleave, B, Strom, M, Poolman, K, Fong, D, Viguiliouk, E, Legault, L, Boutin, L, Ho, J, Virtanen, H, Zahedi, A, Szwiega, K, Coolen, J, Dias, R, Sellers, E, Fletcher, B, Bourrier, L, Haqq, A, Rylance, H, Hadjiyannakis, S, Courtney, J, McManus, R, Halperin, I, Miller, D, Coles, K, Simmons, D, Nema, J, Weisnagel, SJ, Dubé, MC, Chanoine, JP, Kwan, J, McIntyre, HD, Laurie, J, Maguire, F, Soper, J, Bridger, T, Houlden, R, Breen, A, McLean, M, Duke, A, Hendon, S, Sigmund, A, Feig, Denice S, Sanchez, J Johanna, Murphy, Kellie E, Asztalos, Elizabeth, Zinman, Bernard, Simmons, David, Haqq, Andrea M, Fantus, I George, Lipscombe, Lorraine, Armson, Anthony, Barrett, Jon, Donovan, Lois, Karanicolas, Paul, Tobin, Siobhan, Mangoff, Kathryn, Klein, Gail, Jiang, Yidi, Tomlinson, George, and Hamilton, Jill

Published
2023
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13. Optimising electrical performance of leadless cardiac resynchronisation therapy and leadless LV septal pacing

Author

Wijesuriya, N, primary, Strocchi, M, additional, Mehta, V S, additional, Elliott, M K, additional, De Vere, F, additional, Howell, S, additional, Sidhu, B, additional, Mannakkara, N, additional, Little, I, additional, Martic, D, additional, Carlisle, L, additional, Kwan, J, additional, Bosco, P, additional, Niederer, S A, additional, and Rinaldi, C A, additional

Published
2024
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14. Greater Trochanteric Fixation Using Cable Plate Devices in Complex Primary and Revision Total Hip Arthroplasty

Author

Patrick Schafer, MD, MS, Thomas C. Sullivan, BS, Bradley Lambert, PhD, Kwan J. Park, MD, Terry A. Clyburn, MD, and Stephen J. Incavo, MD

Subjects
Greater trochanteric fixation, Cable plate devices, Nonunion, Complex primary THA, Revision THA, Orthopedic surgery, RD701-811
Abstract

Background: Successful fixation of the greater trochanter (GT) in total hip arthroplasty (THA) is a challenging task. A wide range of clinical results are reported in the literature despite advancements in fixation technology. Previous studies may have lacked adequate sample sizes to detect differences. This study evaluates nonunion and reoperation rates and determines factors influencing successful fixation of the GT using current-generation cable plate devices. Methods: This retrospective cohort study included 76 patients who underwent surgery requiring fixation of their GT and had at least 1-year radiographic follow-up. Indications for a surgery were periprosthetic fracture (n = 25), revision THA requiring an extended trochanteric osteotomy (n = 30), GT fracture (n = 3), GT fracture nonunion (n = 9), and complex primary THA (n = 3). Primary outcomes were radiographic union and reoperation. Secondary objectives were patient and plate factors influencing radiographic union. Results: At a mean radiographic follow-up of 2.5 years, the union rate was 76.3% with a nonunion rate of 23.7%. Twenty-eight patients underwent plate removal, reasons for removal were pain (n = 21), nonunion (n = 5), and hardware failure (n = 2). Seven patients had cable-induced bone loss. Anatomic positioning of the plate (P = .03) and number of cables used (P = .03) were associated with radiographic union. Nonunion was associated with a higher incidence (+30%) of hardware failure due to broken cable(s) (P = .005). Conclusions: Greater trochanteric nonunion remains a problem in THA. Successful fixation using current-generation cable plate devices may be influenced by plate positioning and number of cables used. Plate removal may be required for pain or cable-induced bone loss.

Published
2023
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15. Alignment options and robotics in total knee arthroplasty

Author

Justin O. Aflatooni, Austin E. Wininger, Kwan J. Park, and Stephen J. Incavo

Subjects
total knee arthoplasty, alignment, mechanical, kinematic, robotics, functional, Surgery, RD1-811
Abstract

Total knee arthroplasty is one of the most widely performed surgical procedures today. Its widespread popularity has helped drive innovation and improvement in the field. Different schools of thought have developed regarding the best way to perform this operation. Specifically, there are controversaries regarding the best alignment philosophy for the femoral and tibial components to optimize implant stability and longevity. Traditionally, neutral mechanical alignment has been the preferred alignment target. More recently, some surgeons advocate for alignment matching the patient's pre-arthritic anatomic alignment (“physiologic” varus or valgus), which has been described as kinematic alignment. Functional alignment is a hybrid technique that focuses on the coronal plane minimizing soft tissue releases. To date, there is no evidence demonstrating superiority of one method over another. There is growing popularity of robotic surgical techniques to improve accuracy of implant position and alignment. The choice of alignment philosophy is an important aspect of robotic assisted TKA surgery and has the potential to clarify the optimal alignment technique.

Published
2023
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18. Physical, cognitive, and mental health impacts of COVID-19 after hospitalisation (PHOSP-COVID): a UK multicentre, prospective cohort study

Author

Abel, K, Adamali, H, Adeloye, D, Adeyemi, O, Adeyemi, F, Ahmad, S, Ahmed, R, Ainsworth, M, Al-Sheklly, B, Alamoudi, A, Aljaroof, M, Allan, L, Allen, R, Alli, A, Altmann, D, Anderson, D, Andrews, M, Angyal, A, Antoniades, C, Arbane, G, Armour, C, Armstrong, N, Armstrong, L, Arnold, H, Arnold, D, Ashworth, M, Ashworth, A, Assefa-Kebede, H, Atkin, P, Atkins, H, Atkins, A, Aul, R, Avram, C, Baggott, R, Baguley, D, Baillie, J K, Bain, S, Bakali, M, Bakau, M, Baldry, E, Baldwin, D, Ballard, C, Bambrough, J, Barker, R E, Barratt, S, Barrett, F, Basire, D, Basu, N, Batterham, R, Baxendale, H, Bayes, H, Bayley, M, Beadsworth, M, Beirne, P, Bell, R, Bell, D, Berry, C, Betts, S, Bhui, K, Bishop, L, Blaikely, J, Bloomfield, C, Bloss, A, Bolger, A, Bolton, C E, Bonnington, J, Botkai, A, Bourne, M, Bourne, C, Bradley, E, Bramham, K, Brear, L, Breen, G, Breeze, J, Briggs, A, Bright, E, Brightling, C E, Brill, S, Brindle, K, Broad, L, Broome, M, Brown, J S, Brown, M, Brown, J, Brown, R, Brown, V, Brown, A, Brugha, T, Brunskill, N, Buch, M, Bularga, A, Bullmore, E, Burn, D, Burns, G, Busby, J, Buttress, A, Byrne, S, Cairns, P, Calder, P C, Calvelo, E, Card, B, Carr, L, Carson, G, Carter, P, Cavanagh, J, Chalder, T, Chalmers, J D, Chambers, R C, Channon, K, Chapman, K, Charalambou, A, Chaudhuri, N, Checkley, A, Chen, J, Chetham, L, Chilvers, E R, Chinoy, H, Chong-James, K, Choudhury, N, Choudhury, G, Chowdhury, P, Chowienczyk, P, Christie, C, Clark, D, Clark, C, Clarke, J, Clift, P, Clohisey, S, Coburn, Z, Cole, J, Coleman, C, Connell, D, Connolly, B, Connor, L, Cook, A, Cooper, B, Coupland, C, Craig, T, Crisp, P, Cristiano, D, Crooks, M G, Cross, A, Cruz, I, Cullinan, P, Daines, L, Dalton, M, Dark, P, Dasgin, J, David, A, David, C, Davies, M, Davies, G, Davies, K, Davies, F, Davies, G A, Daynes, E, De Silva, T, De Soyza, A, Deakin, B, Deans, A, Defres, S, Dell, A, Dempsey, K, Dennis, J, Dewar, A, Dharmagunawardena, R, Diar Bakerly, N, Dipper, A, Diver, S, Diwanji, S N, Dixon, M, Djukanovic, R, Dobson, H, Dobson, C, Dobson, S L, Docherty, A B, Donaldson, A, Dong, T, Dormand, N, Dougherty, A, Dowling, R, Drain, S, Dulawan, P, Dunleavy, A, Dunn, S, Easom, N, Echevarria, C, Edwards, S, Edwardson, C, Elliott, B, Elliott, A, Ellis, Y, Elmer, A, Elneima, O, Evans, R A, Evans, J, Evans, H, Evans, D, Evans, R I, Evans, R, Evans, T, Fabbri, L, Fairbairn, S, Fairman, A, Fallon, K, Faluyi, D, Favager, C, Felton, T, Finch, J, Finney, S, Fisher, H, Fletcher, S, Flockton, R, Foote, D, Ford, A, Forton, D, Francis, R, Francis, S, Francis, C, Frankel, A, Fraser, E, Free, R, French, N, Fuld, J, Furniss, J, Garner, L, Gautam, N, Geddes, J R, George, P M, George, J, Gibbons, M, Gilmour, L, Gleeson, F, Glossop, J, Glover, S, Goodman, N, Gooptu, B, Gorsuch, T, Gourlay, E, Greenhaff, P, Greenhalf, W, Greenhalgh, A, Greening, N J, Greenwood, J, Greenwood, S, Gregory, R, Grieve, D, Gummadi, M, Gupta, A, Gurram, S, Guthrie, E, Hadley, K, Haggar, A, Hainey, K, Haldar, P, Hall, I, Hall, L, Halling-Brown, M, Hamil, R, Hanley, N A, Hardwick, H E, Hardy, E, Hargadon, B, Harrington, K, Harris, V, Harrison, E M, Harrison, P, Hart, N, Harvey, A, Harvey, M, Harvie, M, Havinden-Williams, M, Hawkes, J, Hawkings, N, Haworth, J, Hayday, A, Heaney, L G, Heeney, J L, Heightman, M, Heller, S, Henderson, M, Hesselden, L, Hillman, T, Hingorani, A, Hiwot, T, Ho, L P, Hoare, A, Hoare, M, Hogarth, P, Holbourn, A, Holdsworth, L, Holgate, D, Holmes, K, Holroyd-Hind, B, Horsley, A, Hosseini, A, Hotopf, M, Houchen, L, Howard, L, Howell, A, Hufton, E, Hughes, A, Hughes, J, Hughes, R, Humphries, A, Huneke, N, Hurst, J R, Hurst, R, Husain, M, Hussell, T, Ibrahim, W, Ient, A, Ingram, L, Ismail, K, Jackson, T, Jacob, J, James, W Y, Janes, S, Jarvis, H, Jayaraman, B, Jenkins, R G, Jezzard, P, Jiwa, K, Johnson, S, Johnson, C, Johnston, D, Jolley, C, Jolley, C J, Jones, I, Jones, S, Jones, D, Jones, H, Jones, G, Jones, M, Jose, S, Kabir, T, Kaltsakas, G, Kamwa, V, Kar, P, Kausar, Z, Kelly, S, Kerr, S, Key, A L, Khan, F, Khunti, K, King, C, King, B, Kitterick, P, Klenerman, P, Knibbs, L, Knight, S, Knighton, A, Kon, O M, Kon, S, Kon, S S, Korszun, A, Kotanidis, C, Koychev, I, Kurupati, P, Kwan, J, Laing, C, Lamlum, H, Landers, G, Langenberg, C, Lasserson, D, Lawrie, A, Lea, A, Leavy, O C, Lee, D, Lee, E, Leitch, K, Lenagh, R, Lewis, K, Lewis, V, Lewis, K E, Lewis, J, Lewis-Burke, N, Light, T, Lightstone, L, Lim, L, Linford, S, Lingford-Hughes, A, Lipman, M, Liyanage, K, Lloyd, A, Logan, S, Lomas, D, Lone, N I, Loosley, R, Lord, J M, Lota, H, Lucey, A, MacGowan, G, Macharia, I, Mackay, C, Macliver, L, Madathil, S, Madzamba, G, Magee, N, Mairs, N, Majeed, N, Major, E, Malim, M, Mallison, G, Man, W, Mandal, S, Mangion, K, Mansoori, P, Marciniak, S, Mariveles, M, Marks, M, Marshall, B, Martineau, A, Maskell, N, Matila, D, Matthews, L, Mayet, J, McAdoo, S, McAllister-Williams, H, McArdle, P, McArdle, A, McAulay, D, McAuley, H J C, McAuley, D F, McCafferty, K, McCann, G P, McCauley, H, McCourt, P, Mcgarvey, L, McGinness, J, McGovern, A, McGuinness, H, McInnes, I B, McIvor, K, McIvor, E, McMahon, A, McMahon, M J, McMorrow, L, Mcnally, T, McNarry, M, McQueen, A, McShane, H, Megson, S, Meiring, J, Menzies, D, Michael, A, Michael, B D, Milligan, L, Mills, N, Mitchell, J, Mohamed, A, Molyneaux, P L, Monteiro, W, Morley, A, Morrison, L, Morriss, R, Morrow, A, Moss, A, Moss, A J, Moss, P, Mukaetova-Ladinska, E, Munawar, U, Murali, E, Murira, J, Nassa, H, Neill, P, Neubauer, S, Newby, D, Newell, H, Newton Cox, A, Nicholson, T, Nicoll, D, Nolan, C M, Noonan, M J, Novotny, P, Nunag, J, Nyaboko, J, O'Brien, L, Odell, N, Ogg, G, Olaosebikan, O, Oliver, C, Omar, Z, Openshaw, P J M, Osbourne, R, Ostermann, M, Overton, C, Oxton, J, Pacpaco, E, Paddick, S, Papineni, P, Paradowski, K, Pareek, M, Parekh, D, Parfrey, H, Pariante, C, Parker, S, Parkes, M, Parmar, J, Parvin, R, Patale, S, Patel, B, Patel, S, Patel, M, Pathmanathan, B, Pavlides, M, Pearl, J E, Peckham, D, Pendlebury, J, Peng, Y, Pennington, C, Peralta, I, Perkins, E, Peto, T, Petousi, N, Petrie, J, Pfeffer, P, Phipps, J, Pimm, J, Piper Hanley, K, Pius, R, Plein, S, Plekhanova, T, Poinasamy, K, Polgar, O, Poll, L, Porter, J C, Portukhay, S, Powell, N, Price, L, Price, D, Price, A, Price, C, Prickett, A, Quaid, S, Quigley, J, Quint, J, Qureshi, H, Rahman, N, Rahman, M, Ralser, M, Raman, B, Ramos, A, Rangeley, J, Rees, T, Regan, K, Richards, A, Richardson, M, Rivera-Ortega, P, Robertson, E, Rodgers, J, Ross, G, Rossdale, J, Rostron, A, Routen, A, Rowland, A, Rowland, M J, Rowland, J, Rowland-Jones, S L, Roy, K, Rudan, I, Russell, R, Russell, E, Sabit, R, Sage, E K, Samani, N, Samuel, R, Sapey, E, Saralaya, D, Saratzis, A, Sargeant, J, Sass, T, Sattar, N, Saunders, K, Saunders, R, Saxon, W, Sayer, A, Schwaeble, W, Scott, J, Scott, K, Selby, N, Semple, M G, Sereno, M, Shah, K, Shah, A, Shah, P, Sharma, M, Sharpe, M, Sharpe, C, Shaw, V, Sheikh, A, Shevket, K, Shikotra, A, Short, J, Siddiqui, S, Sigfrid, L, Simons, G, Simpson, J, Singapuri, A, Singh, S J, Singh, C, Singh, S, Skeemer, J, Smith, I, Smith, J, Smith, L, Smith, A, Soares, M, Southern, D, Spears, M, Spencer, L G, Speranza, F, Stadon, L, Stanel, S, Steiner, M, Stensel, D, Stern, M, Stewart, I, Stockley, J, Stone, R, Storrie, A, Storton, K, Stringer, E, Subbe, C, Sudlow, C, Suleiman, Z, Summers, C, Summersgill, C, Sutherland, D, Sykes, D L, Sykes, R, Talbot, N, Tan, A L, Taylor, C, Taylor, A, Te, A, Tedd, H, Tee, C J, Tench, H, Terry, S, Thackray-Nocera, S, Thaivalappil, F, Thickett, D, Thomas, D, Thomas, D C, Thomas, A K, Thompson, A A R, Thompson, T, Thornton, T, Thwaites, R S, Tobin, M, Toingson, G F, Tong, C, Toshner, M, Touyz, R, Tripp, K A, Tunnicliffe, E, Turner, E, Turtle, L, Turton, H, Ugwuoke, R, Upthegrove, R, Valabhji, J, Vellore, K, Wade, E, Wain, L V, Wajero, L O, Walder, S, Walker, S, Wall, E, Wallis, T, Walmsley, S, Walsh, S, Walsh, J A, Watson, L, Watson, J, Watson, E, Welch, C, Welch, H, Welsh, B, Wessely, S, West, S, Wheeler, H, Whitehead, V, Whitney, J, Whittaker, S, Whittam, B, Wild, J, Wilkins, M, Wilkinson, D, Williams, N, Williams, B, Williams, J, Williams-Howard, S A, Willicombe, M, Willis, G, Wilson, D, Wilson, I, Window, N, Witham, M, Wolf-Roberts, R, Woodhead, F, Woods, J, Wootton, D, Worsley, J, Wraith, D, Wright, L, Wright, C, Wright, S, Xie, C, Yasmin, S, Yates, T, Yip, K P, Young, B, Young, S, Young, A, Yousuf, A J, Yousuf, A, Zawia, A, Zhao, B, Zongo, O, Evans, Rachael A, McAuley, Hamish J C, Harrison, Ewen M, Shikotra, Aarti, Singapuri, Amisha, Sereno, Marco, Elneima, Omer, Docherty, Annemarie B, Lone, Nazir I, Leavy, Olivia C, Daines, Luke, Baillie, J Kenneth, Brown, Jeremy S, Chalder, Trudie, De Soyza, Anthony, Diar Bakerly, Nawar, Easom, Nicholas, Geddes, John R, Greening, Neil J, Hart, Nick, Heaney, Liam G, Heller, Simon, Howard, Luke, Hurst, John R, Jacob, Joseph, Jenkins, R Gisli, Jolley, Caroline, Kerr, Steven, Kon, Onn M, Lewis, Keir, Lord, Janet M, McCann, Gerry P, Neubauer, Stefan, Openshaw, Peter J M, Parekh, Dhruv, Pfeffer, Paul, Rahman, Najib M, Raman, Betty, Richardson, Matthew, Rowland, Matthew, Semple, Malcolm G, Shah, Ajay M, Singh, Sally J, Sheikh, Aziz, Thomas, David, Toshner, Mark, Chalmers, James D, Ho, Ling-Pei, Horsley, Alex, Marks, Michael, Poinasamy, Krisnah, Wain, Louise V, and Brightling, Christopher E

Published
2021
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20. Galaxy bias from galaxy-galaxy lensing in the DES Science Verification Data

Author

Prat, J., Sánchez, C., Miquel, R., Kwan, J., Blazek, J., Bonnett, C., Amara, A., Bridle, S. L., Clampitt, J., Crocce, M., Fosalba, P., Gaztanaga, E., Giannantonio, T., Hartley, W. G., Jarvis, M., MacCrann, N., Percival, W. J., Ross, A. J., Sheldon, E., Zuntz, J., Abbott, T. M. C., Abdalla, F. B., Annis, J., Benoit-Lévy, A., Bertin, E., Brooks, D., Burke, D. L., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Castander, F. J., da Costa, L. N., DePoy, D. L., Desai, S., Diehl, H. T., Doel, P., Eifler, T. F., Evrard, A. E., Neto, A. Fausti, Flaugher, B., Frieman, J., Gerdes, D. W., Gruen, D., Gruendl, R. A., Gutierrez, G., Honscheid, K., James, D. J., Kuehn, K., Kuropatkin, N., Lahav, O., Lima, M., Marshall, J. L., Melchior, P., Menanteau, F., Nord, B., Plazas, A. A., Reil, K., Romer, A. K., Roodman, A., Sanchez, E., Scarpine, V., Schubnell, M., Sevilla-Noarbe, I., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Thomas, D., and Walker, A. R.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present a measurement of galaxy-galaxy lensing around a magnitude-limited ($i_{AB} < 22.5$) sample of galaxies from the Dark Energy Survey Science Verification (DES-SV) data. We split these lenses into three photometric-redshift bins from 0.2 to 0.8, and determine the product of the galaxy bias $b$ and cross-correlation coefficient between the galaxy and dark matter overdensity fields $r$ in each bin, using scales above 4 Mpc/$h$ comoving, where we find the linear bias model to be valid given our current uncertainties. We compare our galaxy bias results from galaxy-galaxy lensing with those obtained from galaxy clustering (Crocce et al. 2016) and CMB lensing (Giannantonio et al. 2016) for the same sample of galaxies, and find our measurements to be in good agreement with those in Crocce et al. (2016), while, in the lowest redshift bin ($z\sim0.3$), they show some tension with the findings in Giannantonio et al. (2016). We measure $b\cdot r$ to be $0.87\pm 0.11$, $1.12 \pm 0.16$ and $1.24\pm 0.23$, respectively for the three redshift bins of width $\Delta z = 0.2$ in the range $0.2

Published
2016
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21. Galaxy-Galaxy Lensing in the DES Science Verification Data

Author

Clampitt, J., Sánchez, C., Kwan, J., Krause, E., MacCrann, N., Park, Y., Troxel, M. A., Jain, B., Rozo, E., Rykoff, E. S., Wechsler, R. H., Blazek, J., Bonnett, C., Crocce, M., Fang, Y., Gaztanaga, E., Gruen, D., Jarvis, M., Miquel, R., Prat, J., Ross, A. J., Sheldon, E., Zuntz, J., Abbott, T. M. C., Abdalla, F. B., Armstrong, R., Becker, M. R., Benoit-Lévy, A., Bernstein, G. M., Bertin, E., Brooks, D., Burke, D. L., Rosell, A. Carnero, Kind, M. Carrasco, Cunha, C. E., D'Andrea, C. B., da Costa, L. N., Desai, S., Diehl, H. T., Dietrich, J. P., Doel, P., Estrada, J., Evrard, A. E., Neto, A. Fausti, Flaugher, B., Fosalba, P., Frieman, J., Gruendl, R. A., Honscheid, K., James, D. J., Kuehn, K., Kuropatkin, N., Lahav, O., Lima, M., March, M., Marshall, J. L., Martini, P., Melchior, P., Mohr, J. J., Nichol, R. C., Nord, B., Plazas, A. A., Romer, A. K., Sanchez, E., Scarpine, V., Schubnell, M., Sevilla-Noarbe, I., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Thomas, D., Vikram, V., and Walker, A. R.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present galaxy-galaxy lensing results from 139 square degrees of Dark Energy Survey (DES) Science Verification (SV) data. Our lens sample consists of red galaxies, known as redMaGiC, which are specifically selected to have a low photometric redshift error and outlier rate. The lensing measurement has a total signal-to-noise of 29 over scales $0.09 < R < 15$ Mpc/$h$, including all lenses over a wide redshift range $0.2 < z < 0.8$. Dividing the lenses into three redshift bins for this constant moving number density sample, we find no evidence for evolution in the halo mass with redshift. We obtain consistent results for the lensing measurement with two independent shear pipelines, ngmix and im3shape. We perform a number of null tests on the shear and photometric redshift catalogs and quantify resulting systematic uncertainties. Covariances from jackknife subsamples of the data are validated with a suite of 50 mock surveys. The results and systematics checks in this work provide a critical input for future cosmological and galaxy evolution studies with the DES data and redMaGiC galaxy samples. We fit a Halo Occupation Distribution (HOD) model, and demonstrate that our data constrains the mean halo mass of the lens galaxies, despite strong degeneracies between individual HOD parameters., Comment: 15 pages, 10 figures; Matches version accepted by MNRAS

Published
2016
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22. Joint Measurement of Lensing-Galaxy Correlations Using SPT and DES SV Data

Author

Baxter, E. J., Clampitt, J., Giannantonio, T., Dodelson, S., Jain, B., Huterer, D., Bleem, L. E., Crawford, T. M., Efstathiou, G., Fosalba, P., Kirk, D., Kwan, J., Sánchez, C., Story, K. T., Troxel, M. A., Abbott, T. M. C., Abdalla, F. B., Armstrong, R., Benoit-Lévy, A., Benson, B. A., Bernstein, G. M., Bernstein, R. A., Bertin, E., Brooks, D., Carlstrom, J. E., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Chown, R., Crocce, M., Cunha, C. E., D'Andrea, C. B., da Costa, L. N., Desai, S., Diehl, H. T., Dietrich, J. P., Doel, P., Evrard, A. E., Neto, A. Fausti, Flaugher, B., Frieman, J., Gruen, D., Gruendl, R. A., Gutierrez, G., de Haan, T., Holder, G. P., Honscheid, K., Hou, Z., James, D. J., Kuehn, K., Kuropatkin, N., Lima, M., March, M., Marshall, J. L., Martini, P., Melchior, P., Miller, C. J., Miquel, R., Mohr, J. J., Nord, B., Omori, Y., Plazas, A. A., Reichardt, C. L., Romer, A. K., Rykoff, E. S., Sanchez, E., Sevilla-Noarbe, I., Sheldon, E., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Stark, A. A., Swanson, M. E. C., Tarle, G., Thomas, D., Walker, A. R., and Wechsler, R. H.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We measure the correlation of galaxy lensing and cosmic microwave background lensing with a set of galaxies expected to trace the matter density field. The measurements are performed using pre-survey Dark Energy Survey (DES) Science Verification optical imaging data and millimeter-wave data from the 2500 square degree South Pole Telescope Sunyaev-Zel'dovich (SPT-SZ) survey. The two lensing-galaxy correlations are jointly fit to extract constraints on cosmological parameters, constraints on the redshift distribution of the lens galaxies, and constraints on the absolute shear calibration of DES galaxy lensing measurements. We show that an attractive feature of these fits is that they are fairly insensitive to the clustering bias of the galaxies used as matter tracers. The measurement presented in this work confirms that DES and SPT data are consistent with each other and with the currently favored $\Lambda$CDM cosmological model. It also demonstrates that joint lensing-galaxy correlation measurement considered here contains a wealth of information that can be extracted using current and future surveys., Comment: 17 pages, 9 figures. Accepted for publication in MNRAS. This version has been revised in response to referee comments

Published
2016
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25. Redshift distributions of galaxies in the DES Science Verification shear catalogue and implications for weak lensing

Author

Bonnett, C., Troxel, M. A., Hartley, W., Amara, A., Leistedt, B., Becker, M. R., Bernstein, G. M., Bridle, S., Bruderer, C., Busha, M. T., Kind, M. Carrasco, Childress, M. J., Castander, F. J., Chang, C., Crocce, M., Davis, T. M., Eifler, T. F., Frieman, J., Gangkofner, C., Gaztanaga, E., Glazebrook, K., Gruen, D., Kacprzak, T., King, A., Kwan, J., Lahav, O., Lewis, G., Lidman, C., Lin, H., MacCrann, N., Miquel, R., O'Neill, C. R., Palmese, A., Peiris, H. V., Refregier, A., Rozo, E., Rykoff, E. S., Sadeh, I., Sánchez, C., Sheldon, E., Uddin, S., Wechsler, R. H., Zuntz, J., Abbott, T., Abdalla, F. B., Allam, S., Armstrong, R., Banerji, M., Bauer, A. H., Benoit-Lévy, A., Bertin, E., Brooks, D., Buckley-Geer, E., Burke, D. L., Capozzi, D., Rosell, A. Carnero, Carretero, J., Cunha, C. E., D'Andrea, C. B., da Costa, L. N., DePoy, D. L., Desai, S., Diehl, H. T., Dietrich, J. P., Doel, P., Neto, A. Fausti, Fernandez, E., Flaugher, B., Fosalba, P., Gerdes, D. W., Gruendl, R. A., Honscheid, K., Jain, B., James, D. J., Jarvis, M., Kim, A. G., Kuehn, K., Kuropatkin, N., Li, T. S., Lima, M., Maia, M. A. G., March, M., Marshall, J. L., Martini, P., Melchior, P., Miller, C. J., Neilsen, E., Nichol, R. C., Nord, B., Ogando, R., Plazas, A. A., Reil, K., Romer, A. K., Roodman, A., Sako, M., Sanchez, E., Santiago, B., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Thaler, J., Thomas, D., Vikram, V., and Walker, A. R.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present photometric redshift estimates for galaxies used in the weak lensing analysis of the Dark Energy Survey Science Verification (DES SV) data. Four model- or machine learning-based photometric redshift methods -- ANNZ2, BPZ calibrated against BCC-Ufig simulations, SkyNet, and TPZ -- are analysed. For training, calibration, and testing of these methods, we construct a catalogue of spectroscopically confirmed galaxies matched against DES SV data. The performance of the methods is evaluated against the matched spectroscopic catalogue, focusing on metrics relevant for weak lensing analyses, with additional validation against COSMOS photo-zs. From the galaxies in the DES SV shear catalogue, which have mean redshift $0.72\pm0.01$ over the range $0.3

Published
2015
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26. Cosmology from Cosmic Shear with DES Science Verification Data

Author

The Dark Energy Survey Collaboration, Abbott, T., Abdalla, F. B., Allam, S., Amara, A., Annis, J., Armstrong, R., Bacon, D., Banerji, M., Bauer, A. H., Baxter, E., Becker, M. R., Benoit-Lévy, A., Bernstein, R. A., Bernstein, G. M., Bertin, E., Blazek, J., Bonnett, C., Bridle, S. L., Brooks, D., Bruderer, C., Buckley-Geer, E., Burke, D. L., Busha, M. T., Capozzi, D., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Castander, F. J., Chang, C., Clampitt, J., Crocce, M., Cunha, C. E., D'Andrea, C. B., da Costa, L. N., Das, R., DePoy, D. L., Desai, S., Diehl, H. T., Dietrich, J. P., Dodelson, S., Doel, P., Drlica-Wagner, A., Efstathiou, G., Eifler, T. F., Erickson, B., Estrada, J., Evrard, A. E., Neto, A. Fausti, Fernandez, E., Finley, D. A., Flaugher, B., Fosalba, P., Friedrich, O., Frieman, J., Gangkofner, C., Garcia-Bellido, J., Gaztanaga, E., Gerdes, D. W., Gruen, D., Gruendl, R. A., Gutierrez, G., Hartley, W., Hirsch, M., Honscheid, K., Huff, E. M., Jain, B., James, D. J., Jarvis, M., Kacprzak, T., Kent, S., Kirk, D., Krause, E., Kravtsov, A., Kuehn, K., Kuropatkin, N., Kwan, J., Lahav, O., Leistedt, B., Li, T. S., Lima, M., Lin, H., MacCrann, N., March, M., Marshall, J. L., Martini, P., McMahon, R. G., Melchior, P., Miller, C. J., Miquel, R., Mohr, J. J., Neilsen, E., Nichol, R. C., Nicola, A., Nord, B., Ogando, R., Palmese, A., Peiris, H. V., Plazas, A. A., Refregier, A., Roe, N., Romer, A. K., Roodman, A., Rowe, B., Rykoff, E. S., Sabiu, C., Sadeh, I., Sako, M., Samuroff, S., Sánchez, C., Sanchez, E., Seo, H., Sevilla-Noarbe, I., Sheldon, E., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Thaler, J., Thomas, D., Troxel, M. A., Vikram, V., Walker, A. R., Wechsler, R. H., Weller, J., Zhang, Y., and Zuntz, J.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present the first constraints on cosmology from the Dark Energy Survey (DES), using weak lensing measurements from the preliminary Science Verification (SV) data. We use 139 square degrees of SV data, which is less than 3\% of the full DES survey area. Using cosmic shear 2-point measurements over three redshift bins we find $\sigma_8 (\Omega_{\rm m}/0.3)^{0.5} = 0.81 \pm 0.06$ (68\% confidence), after marginalising over 7 systematics parameters and 3 other cosmological parameters. We examine the robustness of our results to the choice of data vector and systematics assumed, and find them to be stable. About $20$\% of our error bar comes from marginalising over shear and photometric redshift calibration uncertainties. The current state-of-the-art cosmic shear measurements from CFHTLenS are mildly discrepant with the cosmological constraints from Planck CMB data; our results are consistent with both datasets. Our uncertainties are $\sim$30\% larger than those from CFHTLenS when we carry out a comparable analysis of the two datasets, which we attribute largely to the lower number density of our shear catalogue. We investigate constraints on dark energy and find that, with this small fraction of the full survey, the DES SV constraints make negligible impact on the Planck constraints. The moderate disagreement between the CFHTLenS and Planck values of $\sigma_8 (\Omega_{\rm m}/0.3)^{0.5}$ is present regardless of the value of $w$., Comment: Finally updating to the published version. 20 pages, 12 figures. Additional information at http://deswl.github.io/

Published
2015
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28. Redshift distributions of galaxies in the Dark Energy Survey Science Verification shear catalogue and implications for weak lensing

Author

Bonnett, C, Troxel, MA, Hartley, W, Amara, A, Leistedt, B, Becker, MR, Bernstein, GM, Bridle, SL, Bruderer, C, Busha, MT, Carrasco Kind, M, Childress, MJ, Castander, FJ, Chang, C, Crocce, M, Davis, TM, Eifler, TF, Frieman, J, Gangkofner, C, Gaztanaga, E, Glazebrook, K, Gruen, D, Kacprzak, T, King, A, Kwan, J, Lahav, O, Lewis, G, Lidman, C, Lin, H, MacCrann, N, Miquel, R, O'Neill, CR, Palmese, A, Peiris, HV, Refregier, A, Rozo, E, Rykoff, ES, Sadeh, I, Sánchez, C, Sheldon, E, Uddin, S, Wechsler, RH, Zuntz, J, Abbott, T, Abdalla, FB, Allam, S, Armstrong, R, Banerji, M, Bauer, AH, Benoit-Lévy, A, Bertin, E, Brooks, D, Buckley-Geer, E, Burke, DL, Capozzi, D, Carnero Rosell, A, Carretero, J, Cunha, CE, D'Andrea, CB, Da Costa, LN, Depoy, DL, Desai, S, Diehl, HT, Dietrich, JP, Doel, P, Fausti Neto, A, Fernandez, E, Flaugher, B, Fosalba, P, Gerdes, DW, Gruendl, RA, Honscheid, K, Jain, B, James, DJ, Jarvis, M, Kim, AG, Kuehn, K, Kuropatkin, N, Li, TS, Lima, M, Maia, MAG, March, M, Marshall, JL, Martini, P, Melchior, P, Miller, CJ, Neilsen, E, Nichol, RC, Nord, B, Ogando, R, Plazas, AA, Reil, K, Romer, AK, Roodman, A, Sako, M, Sanchez, E, Santiago, B, Smith, RC, Soares-Santos, M, and Sobreira, F

Subjects
astro-ph.CO
Abstract

We present photometric redshift estimates for galaxies used in the weak lensing analysis of the Dark Energy Survey Science Verification (DES SV) data. Four model- or machine learning-based photometric redshift methods - annz2, bpz calibrated against BCC-Ufig simulations, skynet, and tpz - are analyzed. For training, calibration, and testing of these methods, we construct a catalogue of spectroscopically confirmed galaxies matched against DES SV data. The performance of the methods is evaluated against the matched spectroscopic catalogue, focusing on metrics relevant for weak lensing analyses, with additional validation against COSMOS photo-z's. From the galaxies in the DES SV shear catalogue, which have mean redshift 0.72±0.01 over the range 0.3

Published
2016

29. Cosmology from cosmic shear with Dark Energy Survey Science Verification data

Author

Abbott, T, Abdalla, FB, Allam, S, Amara, A, Annis, J, Armstrong, R, Bacon, D, Banerji, M, Bauer, AH, Baxter, E, Becker, MR, Benoit-Lévy, A, Bernstein, RA, Bernstein, GM, Bertin, E, Blazek, J, Bonnett, C, Bridle, SL, Brooks, D, Bruderer, C, Buckley-Geer, E, Burke, DL, Busha, MT, Capozzi, D, Rosell, A Carnero, Kind, M Carrasco, Carretero, J, Castander, FJ, Chang, C, Clampitt, J, Crocce, M, Cunha, CE, D’Andrea, CB, da Costa, LN, Das, R, DePoy, DL, Desai, S, Diehl, HT, Dietrich, JP, Dodelson, S, Doel, P, Drlica-Wagner, A, Efstathiou, G, Eifler, TF, Erickson, B, Estrada, J, Evrard, AE, Neto, A Fausti, Fernandez, E, Finley, DA, Flaugher, B, Fosalba, P, Friedrich, O, Frieman, J, Gangkofner, C, Garcia-Bellido, J, Gaztanaga, E, Gerdes, DW, Gruen, D, Gruendl, RA, Gutierrez, G, Hartley, W, Hirsch, M, Honscheid, K, Huff, EM, Jain, B, James, DJ, Jarvis, M, Kacprzak, T, Kent, S, Kirk, D, Krause, E, Kravtsov, A, Kuehn, K, Kuropatkin, N, Kwan, J, Lahav, O, Leistedt, B, Li, TS, Lima, M, Lin, H, MacCrann, N, March, M, Marshall, JL, Martini, P, McMahon, RG, Melchior, P, Miller, CJ, Miquel, R, Mohr, JJ, Neilsen, E, Nichol, RC, Nicola, A, Nord, B, Ogando, R, Palmese, A, Peiris, HV, Plazas, AA, Refregier, A, and Roe, N

Subjects
Particle and High Energy Physics, Physical Sciences, astro-ph.CO, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

We present the first constraints on cosmology from the Dark Energy Survey (DES), using weak lensing measurements from the preliminary Science Verification (SV) data. We use 139 square degrees of SV data, which is less than 3% of the full DES survey area. Using cosmic shear 2-point measurements over three redshift bins we find σ8(Ωm/0.3)0.5=0.81±0.06 (68% confidence), after marginalizing over 7 systematics parameters and 3 other cosmological parameters. We examine the robustness of our results to the choice of data vector and systematics assumed, and find them to be stable. About 20% of our error bar comes from marginalizing over shear and photometric redshift calibration uncertainties. The current state-of-the-art cosmic shear measurements from CFHTLenS are mildly discrepant with the cosmological constraints from Planck CMB data; our results are consistent with both data sets. Our uncertainties are ∼30% larger than those from CFHTLenS when we carry out a comparable analysis of the two data sets, which we attribute largely to the lower number density of our shear catalogue. We investigate constraints on dark energy and find that, with this small fraction of the full survey, the DES SV constraints make negligible impact on the Planck constraints. The moderate disagreement between the CFHTLenS and Planck values of σ8(Ωm/0.3)0.5 is present regardless of the value of w.

Published
2016

35. Towards pump-probe experiments of defect dynamics with short ion beam pulses

Author

Schenkel, T., Lidia, S. M., Weis, C. D., Waldron, W. L., Schwartz, J., Minor, A. M., Hosemann, P., and Kwan, J. W.

Subjects
Condensed Matter - Materials Science, Physics - Accelerator Physics
Abstract

A novel, induction type linear accelerator, the Neutralized Drift Compression eXperiment (NDCX-II), is currently being commissioned at Berkeley Lab. This accelerator is designed to deliver intense (up to 3x1011 ions/pulse), 0.6 to ~600 ns duration pulses of 0.13 to 1.2 MeV lithium ions at a rate of about 2 pulses per minute onto 1 to 10 mm scale target areas. When focused to mm-diameter spots, the beam is predicted to volumetrically heat micrometer thick foils to temperatures of ~30,000 K. At lower beam power densities, the short excitation pulse with tunable intensity and time profile enables pump-probe type studies of defect dynamics in a broad range of materials. We briefly describe the accelerator concept and design, present results from beam pulse shaping experiments and discuss examples of pump-probe type studies of defect dynamics following irradiation of materials with intense, short ion beam pulses from NDCX-II., Comment: 25th International Conference on Atomic Collisions in Solids, ICACS-25, Kyoto, October 2012

Published
2012
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36. Tenecteplase versus standard of care for minor ischaemic stroke with proven occlusion (TEMPO-2): a randomised, open label, phase 3 superiority trial

Author

Coutts, Shelagh B, Ankolekar, Sandeep, Appireddy, Ramana, Arenillas, Juan F, Assis, Zarina, Bailey, Peter, Barber, Philip A, Bazan, Rodrigo, Buck, Brian H, Butcher, Ken S, Camden, Marie-Christine, Campbell, Bruce C V, Casaubon, Leanne K, Catanese, Luciana, Chatterjee, Kausik, Choi, Philip M C, Clarke, Brian, Dowlatshahi, Dar, Ferrari, Julia, Field, Thalia S, Ganesh, Aravind, Ghia, Darshan, Goyal, Mayank, Greisenegger, Stefan, Halse, Omid, Horn, Mackenzie, Hunter, Gary, Imoukhuede, Oje, Kelly, Peter J, Kennedy, James, Kenney, Carol, Kleinig, Timothy J, Krishnan, Kailash, Lima, Fabricio, Mandzia, Jennifer L, Marko, Martha, Martins, Sheila O, Medvedev, George, Menon, Bijoy K, Mishra, Sachin M, Molina, Carlos, Moussaddy, Aimen, Muir, Keith W, Parsons, Mark W, Penn, Andrew M W, Pille, Arthur, Pontes-Neto, Octávio M, Roffe, Christine, Serena, Joaquin, Simister, Robert, Singh, Nishita, Spratt, Neil, Strbian, Daniel, Tham, Carol H, Wiggam, M Ivan, Williams, David J, Willmot, Mark R, Wu, Teddy, Yu, Amy Y X, Zachariah, George, Zafar, Atif, Zerna, Charlotte, Hill, Michael D, Salluzzi, Marina, Blenkin, Nicole, Dueck, Ashley, Doram, Craig, Zhang, Qiao, Kenney, Carol, Ryckborst, Karla, Bohn, Shelly, Collier, Quentin, Taylor, Frances, Lethebe, B. Cord, Jambula, Anitha, Sage, Kayla, Toussaint, Lana, Save, Supryia, Lee, Jaclyn, Laham, N, Sultan, A.A., Deepak, A., Sitaram, A., Demchuk, Andrew M., Lockey, A., Micielli, A., Wadhwa, A., Arabambi, B., Graham, B., Bogiatzi, Chrysi, Doshi, Darshan, Chakraborty, D., Kim, Diana, Vasquez, D, Singh, D, Tse, Dominic, Harrison, E., Smith, E.E., Teleg, E., Klourfeld, E., Klein, G., Sebastian, I.A., Evans, J, Hegedus, J, Kromm, J, Lin, K, Ignacio, K, Ghavami, Kimia, Ismail, M., Moores, M., Panzini, M.A., Boyko, M., Almekhlafi, M.A., Newcommon, Nancy, Maraj, N., Imoukhuede, O., Volny, O., Stys, Peter, Couillard, Phillipe, Ojha, P., Eswaradass, P., Joundi, Raed, Singh, R., Asuncion, R.M., Muir, R.T., Dey, S., Mansoor, S., Wasyliw, S., Nagendra, S., Hu, Sherry, Althubait, S., Chen, S., Bal, S., Van Gaal, Stephen, Peters, Steven, Ray, Sucharita, Chaturvedi, S., Subramaniam, Suresh, Fu, Vivian, Villaluna, K., Maclean, G., King-Azote, P., Ma, C., Plecash, A., Murphy, C., Gorman, J., Wilson, L., Zhou, L., Benevente, O., Teal, P., Yip, S., Mann, S., Dewar, B., Demetroff, M., Shamloul, R., Beardshaw, R., Roberts, S., Blaquiere, D., Stotts, G., Shamy, M., Bereznyakova, O., Fahed, R., Alesefir, W., Lavoie, Suzy, Hache, A., Collard, K, Mackey, A., Gosselin-Lefebvre, S., Verreault, S., Beauchamp, B., Lambourn, L., Khaw, A., Mai, L., Sposato, L., Bres Bullrich, M., Azarpazhooh, R., Fridman, S., Kapoor, A., Southwell, A., Bardi, E., Fatakdawala, I., Kamra, M, Lopes, K., Popel, N., Norouzi, V., Liu, A., Liddy, A.M., Ghoari, B., Hawkes, C., Enriquez, C.A., Gladstone, D.J., Manosalva Alzate, H.A., Khosravani, H., Hopyan, J.J., Sivakumar, K., Son, M., Boulos, M.I., Hamind, M.A., Swartz, R.H., Murphy, R., Reiter, S., Fitzpatrick, T., Bhandari, V., Good, J., Penn, M., Naylor, M., Frost, S., Cayley, A., Akthar, F., Williams, J., Kalman, L., Crellin, L., Wiegner, R., Singh, R.S., Stewart, T., To, W., Singh, S., Pikula, A., Jaigobin, C., Carpani, F., Silver, F., Janssen, H., Schaafsma, J., del Campo, M., Alskaini, M., Rajendram, P., Fairall, P., Granfield, B., Crawford, D., Jabs, J., White, L., Sivakumar, L., Piquette, L., Nguyen, T., Nomani, A., Wagner, A., Alrohimi, A., Butt, A., D'Souza, A., Gajurel, B., Vekhande, C., Kamble, H., Kalashyan, H., Lloret, M., Benguzzi, M., Arsalan, N., Ishaque, N., Ashayeriahmadabad, R., Samiento, R., Hosseini, S., Kazi, S., Das, S., Sugumar, T., Selchen, D., Kostyrko, P., Muccilli, A., Saposnik, A.G., Vandervelde, C., Ratnayake, K., McMillan, S., Katsanos, A., Shoamanesh, A., Sahlas, D.J., Naidoo, V., Todorov, V., Toma, H., Brar, J., Lee, J., Horton, M., Chen, S., Shand, E., Weatherby, S., Jin, A., Durafourt, B., Jalini, S., Gardner, A., Tyson, C., Junk, E., Foster, K., Bolt, K., Sylvain, N., Maley, S., Urroz, L., Peeling, L., Kelly, M., Whelan, R., Cooley, R., Teitelbaum, J., Boutayeb, A., Moore, A., Cole, E., Waxman, L., Ben-Amor, N., Sanchez, R., Khalil, S., Nehme, A., Legault, C., Tampieri, D., Ehrensperger, E., Vieira, L., Cortes, M., Angle, M., Hannouche, M., Badawy, M., Werner, K., Wieszmuellner, S., Langer, A., Gisold, A., Zach, H., Rommer, P., Macher, S., Blechinger, S., Marik, W., Series, W., Baumgartinger, M., Krebs, S., Koski, J., Eirola, S., Ivanoff, T., Erakanto, A., Kupari, L., Sibolt, G., Panula, J., Tomppo, L., Tiainen, M., Ahlstrom, M., Martinez Majander, N., Suomalainen, O., Raty, S., Levi, C., Kerr, E., Allen, J., Kaauwai, L.P., Belevski, L., Russell, M., Ormond, S., Chew, A., Loiselle, A., Royan, A., Hughes, B., Garcia Esperon, C., Pepper, E., Miteff, F., He, J., Lycett, M., Min, M., Murray, N., Pavey, N., Starling de Barros, R., Gangadharan, S., Dunkerton, S., Waller, S., Canento Sanchez, T., Wellings, T., Edmonds, G., Whittaker, K.A., Ewing, M., Lee, P., Singkang, R., McDonald, A., Dos Santos, A., Shin, C., Jackson, D., Tsoleridis, J., Fisicchia, L., Parsons, N., Shenoy, N., Smith, S., Sharobeam, A., Balabanski, A., Park, A., Williams, C., Pavlin-Premri, D., Rodrigues, E., Alemseged, F., Ng, F., Zhao, H., Beharry, J., Ng, J.L., Williamson, J., Wong, J.Z.W., Li, K., Kwan, M.K., Valente, M., Yassi, N., Cooley, R., Yogendrakumar, V., McNamara, B., Buchanan, C., McCarthy, C., Thomas, G., Stephens, K., Chung, M., Chung, M.F., Tang, M., Busch, T., Frost, T., Lee, R., Stuart, N., Pachani, N., Menon, A., Borojevic, B., Linton, C.M., Garcia, G., Callaly, E.P., Dewey, H., Liu, J., Chen, J., Wong, J., Nowak, K., To, K., Lizak, N.S., Bhalala, O., Park, P., Tan, P., Martins, R., Cody, R., Forbes, R., Chen, S.K., Ooi, S., Tu, S., Dang, Y.L., Ling, Z., Cranefield, J., Drew, R., Tan, A., Kurunawai, C., Harvey, J., Mahadevan, J.J., Cagi, L., Palanikumar, L., Chia, L.N., Goh, R., El-Masri, S., Urbi, B., Rapier, C., Berrill, H., McEvoy, H., Dunning, R., Kuriakose, S., Chad, T., Sapaen, V., Sabet, A., Shah, D., Yeow, D., Lilley, K., Ward, K., Mozhy Mahizhnan, M., Tan, M., Lynch, C., Coveney, S., Tobin, K., McCabe, J., Marnane, M., Murphy, S., Large, M., Moynihan, B., Boyle, K., Sanjuan, E., Sanchis, M., Boned, S., Pancorbo, O., Sala, V., Garcia, L., Garcia-Tornel, A., Juega, J., Pagola, J., Santana, K., Requena, M., Muchada, M., Olive, M., Lozano, P.J., Rubiera, M., Deck, M., Rodriguez, N., Gomez, B., Reyes Munoz, F.J., Gomez, A.S., Sanz, A.C., Garcia, E.C., Penacoba, G., Ramos, M.E., de Lera Alfonso, M., Feliu, A, Pardo, L., Ramirez, P., Murillo, A., Lopez Dominguez, D., Rodriguez, J., Terceno Izaga, M., Reina, M., Viturro, S.B., Bojaryn, U., Vera Monge, V.A., Silva Blas, Y., R Siew, R., Agustin, S J, Seet, C., Tianming, T., d'Emden, A., Murray, A., Welch, A., Hatherley, K., Day, N., Smith, W., MacRae, E., Mitchell, E.S., Mahmood, A., Elliot, J., Neilson, S., Biswas, V., Brown, C., Lewis, A., Ashton, A., Werring, D., Perry, R., Muhammad, R., Lee, Y.C., Black, A., Robinson, A., Williams, A., Banaras, A., Cahoy, C., Raingold, G., Marinescu, M., Atang, N., Bason, N., Francia, N., Obarey, S., Feerick, S., Joseph, J., Schulz, U., Irons, R., Benjamin, J., Quinn, L., Jhoots, M., Teal, R., Ford, G., Harston, G., Bains, H., Gbinigie, I., Mathieson, P., Irons, R., Sim, C.H., Hayter, E., Kennedy, K., Binnie, L., Priestley, N., Williams, R., Ghatala, R., Stratton, S., Blight, A., Zhang, L., Davies, A., Duffy, H., Roberts, J., Homer, J., Roberts, K., Dodd, K., Cawley, K., Martin, M., Leason, S., Cotgreave, S., Taylor, T., Nallasivan, A., Haider, S., Chakraborty, T., Webster, T., Gil, A., Martin, B., Joseph, B., Cabrera, C., Jose, D., Man, J., Aquino, J., Sebastian, S., Osterdahl, M., Kwan, M., Matthew, M., Ike, N., Bello, P., Wilding, P., Fuentes, R., Shah, R., Mashate, S., Patel, T., Nwanguma, U., Dave, V., Haber, A., Lee, A., O'Sullivan, A., Drumm, B., Dawson, A.C., Matar, T., Biswas, V., Roberts, D., Taylor, E., Rounis, E., El-Masry, A., O'Hare, C., Kalladka, D., Jamil, S., Auger, S., Raha, O., Evans, M., Vonberg, F., Kalam, S., Ali Sheikh, A., Jenkins, I.H., George, J., Kwan, J., Blagojevic, J., Saeed, M., Haji-Coll, M., Tsuda, M., Sayed, M., Winterkron, N., Thanbirajah, N., Vittay, O., Karim, R., Smail, R.C., Gauhar, S., Elmamoun, S., Malani, S., Pralhad Kelavkar, S., Hiden, J., Ferdinand, P., Sanyal, R., Varquez, R., Smith, B., Okechukwu, C., Fox, E., Collins, E., Courtney, K., Tauro, S., Patterson, C., McShane, D., Kerr, E., Roberts, G., McIImoyle, J., McGuire, K., Fearon, P., Gordon, P., Isaacs, K., Lucas, K., Smith, L., Dews, L., Bates, M., Lawrence, S., Heeley, S., Patel, V., Chin, Y.M., Sims, D., Littleton, E., Khaira, J., Nadar, K., Kieliszkowska, A., Sari, B., Domingos Belo, C., Smith, E., Manolo, E.Y., Aeron-Thomas, J., Doheny, M., Garcia Pardo, M., Recaman, M., Tibajia, M.C., Aissa, M., Mah, Y., Yu, T., Patel, V., Meenakshisundaram, S., Heller, S., Alsukhni, R., Williams, O., Farag, M., Benger, M., Engineer, A., Aissa, M., Bayhonan, S., Conway, S., Bhalla, A., Nouvakis, D., Theochari, E., Boyle, F., Teo, J., King-Robson, J., Law, K.Y., Sztriha, L., Ismail, M., McGovern, A., Day, D., Mitchell-Douglas, J., Francis, J., Iqbal, A., Punjabivaryani, P., Anonuevo Reyes, J., Anonuevo Reyes, M., Pauls, M., Buch, A., Hedstrom, A., Hutchinson, C., Kirkland, C., Newham, J., Wilkes, G., Fleming, L., Fleck, N., Franca, A., Chwal, B., Oldoni, C., Mantovani, G., Noll, G., Zanella, L., Soma, M., Secchi, T., Borelli, W., Rimoli, B.P., da Cunha Silva, G.H., Machado Galvao Mondin, L.A., Barbosa Cerantola, R., Imthon, A.K., Esaki, A.S., Camilo, M., Vincenzi, O.C., ds Cruz, R.R., Morillos, M.B., Riccioppa Rodrigues, G.G., Santos Ferreira, K., Pazini, A.M., Pena Pereira, M.A., de Albuquerque, A.L.A., Massote Fontanini, C.E., Matinez Rubio, C.F., dos Santos, D.T., Dias, F.A., Alves, F.F.A., Milani, C., Pegorer Santos, B., Winckler, F., De Souza, J.T., Bonome, L.A.M., Cury Silva, V.A., Teodoro, R.S., Modolo, G.P., Ferreira, N.C., Barbosa dos Santos, D.F., dos Santos Moreira, J.C., Cruz Guedes de Morais, A.B., Vieira, J., Mendes, G., and de Queiroz, J.P.

Abstract

Individuals with minor ischaemic stroke and intracranial occlusion are at increased risk of poor outcomes. Intravenous thrombolysis with tenecteplase might improve outcomes in this population. We aimed to test the superiority of intravenous tenecteplase over non-thrombolytic standard of care in patients with minor ischaemic stroke and intracranial occlusion or focal perfusion abnormality.

Published
2024
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37. Patient Perceptions of Same-Day Discharge Versus Overnight Stay After Total Joint Arthroplasty: Results of a Survey.

Author

O'Brien, Daniel F., Sullivan, Thomas C., Lambert, Bradley S., Brown, Timothy S., Incavo, Stephen J., and Park, Kwan J.

Abstract

Background: In the COVID-19 era, there has been increasing interest in same-day discharge (SDD) after total joint arthroplasty (TJA). However, patient perception of SDD is not well reported. Purpose: We sought to understand patients' perceptions and preferences of postoperative care by surveying patients who have completed both an overnight stay (ONS) and an SDD after TJA. Methods: We emailed survey links to 67 patients who previously underwent either 2 total hip arthroplasties (THAs) or 2 total knee arthroplasties (TKAs). Results: Fifty-two patients (78%) responded to the survey. Thirty-four (65%) patients underwent staged, bilateral TKAs, and 18 (35%) patients underwent staged, bilateral THAs. Overall, 63% of patients preferred their SDD, 12% had no preference, and 25% preferred their ONS, with no difference in preference between TKA and THA groups. Those who preferred their SDD reported being more comfortable at home. Those who preferred their ONS felt their pain and concerns were better addressed. No differences were found in comfort, sleep quality, appetite, burden on family, return to function, feelings of being discharged too soon, overall experience, 30-day emergency department (ED) visits, or readmissions within 30 days between patients' SDD and ONS. There was a small statistically significant difference between patients' perception of safety between SDD and ONS. Conclusion: Our survey found that most patients reported a preference for SDD after TJA over ONS. Although there was a small difference in patient perception of safety, there were no differences in return to the ED or readmissions after SDD and ONS. [ABSTRACT FROM AUTHOR]

Published
2024
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39. PRESS survey: PREvention of surgical site infection—a global pan-specialty survey of practice protocol

Author

Heinz, J., primary, Walshaw, J., additional, Kwan, J. Y., additional, Long, J., additional, Carradice, D., additional, Totty, J., additional, Kontouli, K. M., additional, Lainas, P., additional, Hitchman, L., additional, Smith, G., additional, Huo, B., additional, Guadalajara, H., additional, Garcia-Olmo, D., additional, Sharma, D., additional, Biyani, C. S., additional, Tomlinson, J., additional, Loubani, M., additional, Galli, R., additional, Lathan, R., additional, Chetter, I., additional, and Yiasemidou, M., additional

Published
2023
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42. He I 10830 as a Probe of Winds in Accreting Young Stars

Author

Edwards, S., Fischer, W., Kwan, J., Hillenbrand, L., and Dupree, A. K.

Subjects
Astrophysics
Abstract

He I 10830 profiles acquired with Keck's NIRSPEC for 6 young low mass stars with high disk accretion rates (AS 353A, DG Tau, DL Tau, DR Tau, HL Tau and SVS 13) provide new insight into accretion-driven winds. In 4 stars the profiles have the signature of resonance scattering, and possess a deep and broad blueshifted absorption that penetrates more than 50% into the 1 micron continuum over a continuous range of velocities from near the stellar rest velocity to the terminal velocity of the wind, unlike inner wind signatures seen in other spectral features. This deep and broad absorption provides the first observational tracer of the acceleration region of the inner wind and suggests that this acceleration region is situated such that it occults a significant portion of the stellar disk. The remaining 2 stars also have blue absorption extending below the continuum although here the profiles are dominated by emission, requiring an additional source of helium excitation beyond resonant scattering. This is likely the same process that produces the emission profiles seen at He I 5876.

Published
2003
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44. Assessing the Impact of Patient-Facing Mobile Health Technology on Patient Outcomes: Retrospective Observational Cohort Study

Author

Bruce, Courtenay R, Harrison, Patricia, Nisar, Tariq, Giammattei, Charlie, Tan, Neema M, Bliven, Caitlin, Shallcross, Jamie, Khleif, Aroub, Tran, Nhan, Kelkar, Sayali, Tobias, Noreen, Chavez, Ana E, Rivera, Dana, Leong, Angela, Romano, Angela, Desai, S Nicholas, Sol, Josh R, Gutierrez, Kayla, Rappel, Christopher, Haas, Eric, Zheng, Feibi, Park, Kwan J, Jones, Stephen, Barach, Paul, and Schwartz, Roberta

Subjects
Information technology, T58.5-58.64, Public aspects of medicine, RA1-1270
Abstract

BackgroundDespite the growth of and media hype about mobile health (mHealth), there is a paucity of literature supporting the effectiveness of widespread implementation of mHealth technologies. ObjectiveThis study aimed to assess whether an innovative mHealth technology system with several overlapping purposes can impact (1) clinical outcomes (ie, readmission rates, revisit rates, and length of stay) and (2) patient-centered care outcomes (ie, patient engagement, patient experience, and patient satisfaction). MethodsWe compared all patients (2059 patients) of participating orthopedic surgeons using mHealth technology with all patients of nonparticipating orthopedic surgeons (2554 patients). The analyses included Wilcoxon rank-sum tests, Kruskal-Wallis tests for continuous variables, and chi-square tests for categorical variables. Logistic regression models were performed on categorical outcomes and a gamma-distributed model for continuous variables. All models were adjusted for patient demographics and comorbidities. ResultsThe inpatient readmission rates for the nonparticipating group when compared with the participating group were higher and demonstrated higher odds ratios (ORs) for 30-day inpatient readmissions (nonparticipating group 106/2636, 4.02% and participating group 54/2048, 2.64%; OR 1.48, 95% CI 1.03 to 2.13; P=.04), 60-day inpatient readmissions (nonparticipating group 194/2636, 7.36% and participating group 85/2048, 4.15%; OR 1.79, 95% CI 1.32 to 2.39; P

Published
2020
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47. Holder Inequalities and Bounds on the Masses of Light Quarks

Author

Steele, T. G., Kostuik, K., and Kwan, J.

Subjects
High Energy Physics - Phenomenology
Abstract

QCD Laplace sum-rules must satisfy a fundamental (Holder) inequality if they are to consistently represent an integrated hadronic cross-section. After subtraction of the pion-pole, the Laplace sum-rule of pion currents is shown to violate this fundamental inequality unless the up and down quark masses are sufficiently large, placing a lower bound on the 1.0 GeV MS-bar running masses., Comment: latex2e, 8 pages, 2 figures. Error corrected in equation (41)

Published
1998
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49. Sum-Rule Inequalities and a Toy Model Paradox

Author

Steele, T. G., Alavian, S., and Kwan, J.

Subjects
High Energy Physics - Phenomenology
Abstract

Fundamental inequalities for QCD sum-rules are applied to resolve a paradox recently encountered in a sum-rule calculation. This paradox was encountered in a toy model known to be free of resonances that yields an apparent resonance using a standard sum-rule stability analysis. Application of the inequalities does not support the existence of a well defined sum-rule calculation, and shows a strong distinction from typical behaviour in QCD., Comment: 6 pages, RevTeX, figures available upon request to steelet@sask.usask.ca

Published
1997
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50. Discovering a Wigner-like crystal and soft x-ray correlated plasmons and their couplings in a transition metal dichalcogenide.

Author

Whitcher, T. J., Diao, C., Fauzi, A. D., Kwan, J. W., Chi, X., Naradipa, M. A., Loh, N. D., Breese, M. B. H., and Rusydi, A.

Subjects
TRANSITION metals, CRYSTALS, X-ray scattering, OPTICAL properties, SOFT X rays
Abstract

Low-dimensional systems host many exotic physical properties. Using extended resonant soft x-ray scattering supported with theoretical calculations, we observe concomitantly a Wigner-like crystal in a stripe-like QHKL = (001) superlattice with surprisingly long coherence lengths and new soft x-ray correlated plasmons in WS2. A new electronic transition is found at 125 K upon cooling, which is a transition from two-dimensional ordering to three-dimensional ordering, a result of p–d hybridization anisotropy and electronic correlations. Our result shows the importance of the interplay of long-range electron–electron correlation and short-range electronic screening in determining electronics and optical properties of transition metal dichalcogenides. [ABSTRACT FROM AUTHOR]

Published
2023
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