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5,893 results on '"Attard P"'

101. Quantum Statistical Mechanics Results for Argon, Neon, and Helium Using Classical Monte Carlo

Author

Attard, Phil

Subjects
Quantum Physics, Condensed Matter - Statistical Mechanics, Physics - Chemical Physics
Abstract

Quantum corrections to the classical pressure are obtained for Lennard-Jones models of argon, neon, and helium using classical Metropolis algorithm computer simulations. The corrections for non-commutativity are obtained to fourth order in Planck's constant. Compared to the classical virial pressure on all isotherms at liquid-like densities, the quantum correction is found to be ${\cal O}(10^{-2})$ for argon, ${\cal O}(10^{0})$ for neon, and ${\cal O}(10^{3})$ for helium. The first order correction due to wave function symmetrization is also obtained, but this is relatively negligible., Comment: 15 pages, 9 figures

Published
2017

102. Tractors and Twistors from conformal Cartan geometry: a gauge theoretic approach II. Twistors

Author

François, Jordan and Attard, Jeremy

Subjects
Mathematical Physics
Abstract

Tractors and Twistors bundles both provide natural conformally covariant calculi on $4D$-Riemannian manifolds. They have different origins but are closely related, and usually constructed bottom-up through prolongation of defining differential equations. We propose alternative top-down gauge theoretic constructions, starting from the conformal Cartan bundle $\P$ and its vectorial $E$ and spinorial $\sE$ associated bundles. Our key ingredient is the dressing field method of gauge symmetry reduction, which allows to exhibit tractors and twistors and their associated connections as gauge fields of a non-standard kind as far as Weyl rescaling symmetry is concerned. By \emph{non-standard} we mean that they implement the gauge principle of physics, but are of a different geometric nature than the well known differential geometric objects usually underlying gauge theories. We provide the corresponding BRST treatment. In a companion paper we dealt with tractors, in the present one we address the case of twistors., Comment: 24 pages, correction eq. (29)

Published
2016
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103. Quantum Statistical Mechanics as an Exact Classical Expansion with Results for Lennard-Jones Helium

Author

Attard, Phil

Subjects
Quantum Physics, Condensed Matter - Statistical Mechanics, Physics - Chemical Physics
Abstract

The quantum states representing classical phase space are given, and these are used to formulate quantum statistical mechanics as a formally exact double perturbation expansion about classical statistical mechanics. One series of quantum contributions arises from the non-commutativity of the position and momentum operators. Although the formulation of the quantum states differs, the present results for separate averages of position operators and of momentum operators agree with Wigner (1932) and Kirkwood (1933). The second series arises from wave function symmetrization, and is given in terms of $l$-particle permutation loops in an infinite order re-summation. The series gives analytically the known exact result for the quantum ideal gas to all orders. The leading correction corrects a correction given by Kirkwood. The first four quantum corrections to the grand potential are calculated for a Lennard-Jones fluid using the hypernetted chain closure. For helium on liquid branch isotherms, the corrections range from several times to 1\% of the total classical pressure, with the effects of non-commutativity being significantly larger in magnitude than those of wave function symmetrization. All corrections are found to be negligible for argon at the densities and temperatures studied. The calculations are computationally trivial as the method avoids having to compute eigenfunctions, eigenvalues, and numerical symmetrization., Comment: 26 pages, 5 figures. Corrected Eqs 4.16--19, Fig. 2. Added appendix A. Added appendix B and some simulation results

Published
2016

104. A Note on Weyl invariance in gravity and the Wess-Zumino functional

Author

Attard, J. and Lazzarini, S.

Subjects
High Energy Physics - Theory, General Relativity and Quantum Cosmology, Mathematical Physics
Abstract

It is shown that the explicit calculation of the Wess-Zumino functional pertaining to the breaking term of the Weyl symmetry for the Einstein-Hilbert action allows to restore the Weyl symmetry by introducing the extra dilaton field as Goldstone field. Adding the Wess-Zumino counter-term to the Einstein-Hilbert action reproduces the usual Weyl invariant action used in standard literature. Further consideration might confer to the Einstein-Hilbert action a new status., Comment: Contribution to the Special Issue 'Memoriam Raymond Stora', devoted to "Mathematical Foundations of Quantum Field Theory", Nucl. Phys. B

Published
2016
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105. Financial Literacy: Mathematics and Money Improving Student Engagement

Author

Attard, Catherine

Abstract

The low levels of student engagement with mathematics has been of significant concern in Australia for some time (Attard, 2013). This is a particularly important issue in mathematics education given the current attention to science, technology, engineering and mathematics (STEM) education to ensure "the continued prosperity of Australia on all fronts--socially, culturally and economically--for all our citizens and for our place in the world" (Office of the Chief Scientist, 2013, p.3). One of the most common reasons for students to disengage with mathematics is the issue of relevance. Many students fail to see how the mathematics they learn in the primary classroom is applied in their day-to-day lives. Financial literacy appears to be a natural solution to this issue because all students have some familiarity with money related matters. This article presents a case study of one class from a Year 6 classroom from Fairfield Public School that successfully addressed this issue through their participation in an action research project that was based around MoneySmart. The Framework for Engagement with Mathematics is described. The aim of the project was to explore if combining financial literacy education and mathematics, through the use of student-centred units of work, could improve engagement with mathematics and provide a foundation of financial literacy to positively impact children's lives (Attard, 2016). The process for developing a new unit of work in financial literacy is explained.

Published
2018

106. Correction: Professional Development of Behavior Analysts in Europe: A Snapshot for 21 Countries

Author

Keenan, Mickey, Dillenburger, Karola, Konrad, Marie-Hélène, Debetencourt, Natacha, Vuksan, Rea, Kourea, Lefki, Pancocha, Karel, Kingsdorf, Sheri, Brandtberg, Henriette Juul, Ozkan, Nursel, Abdelnour, Helene, Da Costa-Meranda, Magali, Schuldt, Steffi, Mellon, Robert, Herman, Alexandra, Tennyson, Alan, Ayvazo, Shiri, Moderato, Paolo, Attard, Natasha, Schenk, Jacqueline, Budzinska, Anna, Virues-Ortega, Javier, Roll-Pettersson, Lise, Strömberg, Dag, Wirth, Silja, Escané, Charlotte, Glaus-Stuessi, Erika, Moskalets, Alla, and Gallagher, Stephen

Published
2023
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107. Management of Patients with Advanced Prostate Cancer: The Report of the Advanced Prostate Cancer Consensus Conference APCCC 2017

Author

Gillessen, Silke, Attard, Gerhardt, Beer, Tomasz M, Beltran, Himisha, Bossi, Alberto, Bristow, Rob, Carver, Brett, Castellano, Daniel, Chung, Byung Ha, Clarke, Noel, Daugaard, Gedske, Davis, Ian D, de Bono, Johann, dos Reis, Rodolfo Borges, Drake, Charles G, Eeles, Ros, Efstathiou, Eleni, Evans, Christopher P, Fanti, Stefano, Feng, Felix, Fizazi, Karim, Frydenberg, Mark, Gleave, Martin, Halabi, Susan, Heidenreich, Axel, Higano, Celestia S, James, Nicolas, Kantoff, Philip, Kellokumpu-Lehtinen, Pirkko-Liisa, Khauli, Raja B, Kramer, Gero, Logothetis, Chris, Maluf, Fernando, Morgans, Alicia K, Morris, Michael J, Mottet, Nicolas, Murthy, Vedang, Oh, William, Ost, Piet, Padhani, Anwar R, Parker, Chris, Pritchard, Colin C, Roach, Mack, Rubin, Mark A, Ryan, Charles, Saad, Fred, Sartor, Oliver, Scher, Howard, Sella, Avishay, Shore, Neal, Smith, Matthew, Soule, Howard, Sternberg, Cora N, Suzuki, Hiroyoshi, Sweeney, Christopher, Sydes, Matthew R, Tannock, Ian, Tombal, Bertrand, Valdagni, Riccardo, Wiegel, Thomas, and Omlin, Aurelius

Subjects
Cancer, Urologic Diseases, Aging, Prostate Cancer, Good Health and Well Being, Humans, Male, Neoplasm Staging, Practice Guidelines as Topic, Prostatic Neoplasms, Advanced and high-risk localized prostate cancer, Castration-naive and castration-resistant prostate cancer, Therapeutics, Consensus, Oligometastatic prostate cancer, Clinical Sciences, Urology & Nephrology
Abstract

BackgroundIn advanced prostate cancer (APC), successful drug development as well as advances in imaging and molecular characterisation have resulted in multiple areas where there is lack of evidence or low level of evidence. The Advanced Prostate Cancer Consensus Conference (APCCC) 2017 addressed some of these topics.ObjectiveTo present the report of APCCC 2017.Design, setting, and participantsTen important areas of controversy in APC management were identified: high-risk localised and locally advanced prostate cancer; "oligometastatic" prostate cancer; castration-naïve and castration-resistant prostate cancer; the role of imaging in APC; osteoclast-targeted therapy; molecular characterisation of blood and tissue; genetic counselling/testing; side effects of systemic treatment(s); global access to prostate cancer drugs. A panel of 60 international prostate cancer experts developed the program and the consensus questions.Outcome measurements and statistical analysisThe panel voted publicly but anonymously on 150 predefined questions, which have been developed following a modified Delphi process.Results and limitationsVoting is based on panellist opinion, and thus is not based on a standard literature review or meta-analysis. The outcomes of the voting had varying degrees of support, as reflected in the wording of this article, as well as in the detailed voting results recorded in Supplementary data.ConclusionsThe presented expert voting results can be used for support in areas of management of men with APC where there is no high-level evidence, but individualised treatment decisions should as always be based on all of the data available, including disease extent and location, prior therapies regardless of type, host factors including comorbidities, as well as patient preferences, current and emerging evidence, and logistical and economic constraints. Inclusion of men with APC in clinical trials should be strongly encouraged. Importantly, APCCC 2017 again identified important areas in need of trials specifically designed to address them.Patient summaryThe second Advanced Prostate Cancer Consensus Conference APCCC 2017 did provide a forum for discussion and debates on current treatment options for men with advanced prostate cancer. The aim of the conference is to bring the expertise of world experts to care givers around the world who see less patients with prostate cancer. The conference concluded with a discussion and voting of the expert panel on predefined consensus questions, targeting areas of primary clinical relevance. The results of these expert opinion votes are embedded in the clinical context of current treatment of men with advanced prostate cancer and provide a practical guide to clinicians to assist in the discussions with men with prostate cancer as part of a shared and multidisciplinary decision-making process.

Published
2018

109. Intracellular nitrate storage by diatoms can be an important nitrogen pool in freshwater and marine ecosystems

Author

Stief, Peter, Schauberger, Clemens, Lund, Marie B., Greve, Andreas, Abed, Raeid M. M., Al-Najjar, Mohammad A. A., Attard, Karl, Bonaglia, Stefano, Deutzmann, Jörg S., Franco-Cisterna, Belén, García-Robledo, Emilio, Holtappels, Moritz, John, Uwe, Maciute, Adele, Magee, Michael J., Pors, Rie, Santl-Temkiv, Tina, Scherwass, Anja, Sevilgen, Duygu S., de Beer, Dirk, Glud, Ronnie N., Schramm, Andreas, and Kamp, Anja

Published
2022
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116. Hemostatic Outcome Definitions in Pediatric Extracorporeal Membrane Oxygenation: Challenges in Cohorts From Rotterdam (2019–2023) and Melbourne (2016–2022)

Author

Drop, Joppe, Van Den Helm, Suelyn, Letunica, Natasha, Wildschut, Enno, de Hoog, Matthijs, de Boode, Willem, Barton, Rebecca, Yaw, Hui Ping, Newall, Fiona, Horton, Stephen, Chiletti, Roberto, Johansen, Amy, Best, Derek, McKittrick, Joanne, Butt, Warwick, d’Udekem, Yves, MacLaren, Graeme, Ignjatovic, Vera, Attard, Chantal, van Ommen, C. Heleen, and Monagle, Paul

Published
2025
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117. 30-day Morbidity and Mortality After Cholecystectomy for Benign Gallbladder Disease (AMBROSE)

Author

Wong, Geoffrey Yuet Mun, Wadhawan, Himanshu, Roth Cardoso, Victor, Bravo Merodio, Laura, Rajeev, Yashasvi, Maldonado, Ricardo David, Martinino, Alessandro, Balasubaramaniam, Vignesh, Ashraf, Aabid, Siddiqui, Adeela, Al-Shkirat, Ahmad Ghassan, Mohammed Abu-Elfatth, Ahmed, Gupta, Ajay, Alkaseek, Akram, Ouyahia, Amel, Said, Amira, Pandey, Anshuman, Kumar, Ashwani, Maqbool, Baila, Millán, Carlos Alberto, Singh, Cheena, Pantoja Pachajoa, Diana Alejandra, Adamovich, Dmitry Mikhailovich, Petracchi, Enrique, Ashraf, Fariha, Clementi, Marco, Mulita, Francesk, Marom, Gad Amram, Abdulaal, Gamaleldeen, Verras, Georgios-Ioannis, Calini, Giacomo, Moretto, Gianluigi, Elfeki, Hossam, Liang, Hui, Jalaawiy, Humam, Elzayat, Ibrahim, Das, Jayanta Kumar, Aceves-Ayala, Jose Miguel, Ahmed, Kazi T., Degrate, Luca, Aggarwal, Manisha, Omar, Mohammed Ahmed, Rais, Mounira, Elhadi, Muhammed, Sakran, Nasser, Bhojwani, Rajesh, Agarwalla, Ramesh, Kanaan, Samir, Erdene, Sarnai, Chooklin, Serge, Khuroo, Suhail, Dawani, Surrendar, Asghar, Syed Tanseer, Fung, Tak Kwan James, Omarov, Taryel, Grigorean, Valentin Titus, Boras, Zdenko, Gkoutos, Georgios V., Singhal, Rishi, Mahawar, Kamal, Group:, TUGSS Multinational Audit Steering, Madhok, Brij, Graham, Yitka, Donohoe, Claire, Reira, Manel, Wadhawan, Himanshu, Vish, YKS, Jain, Rajesh, Elhadi, Muhammed, Popat, Sunil, Boddy, Alex, Jain, Vikas, Singhal, Rishi, Mahawar, Kamal, Coordinators:, TUGSS Multinational Audit Study, Martinino, Alessandro, Said, Amira, Marques, Cláudia Neves, Wazir, Ishaan, Pereira, Juan Pablo Scarano, Abouelazayem, Mohamed, Viswanath, Nakul, Sarodaya, Varun, Bala, Vignesh, Coordinators:, TUGSS Multinational Audit National, Homayoon, Roshan, Dogjani, Agron, Tidjane, Anisse, Antozzi, Luciano, Hong, Joshua, Omarov, Taryel, Dash, Anuj Kanti, Chokshi, Aishwarya, Wietzycoski, Cacio Ricardo, Petkov, Plamen, Mbonicura, Jean Claude, Yang, Wah, Zuluaga, Mauricio, Kraljik, Darko, Lincango Naranjo, Eddy P., Elghadban, Hosam Mohamed, Diaz, Angel, Gerogiannis, Ioannis, Mohammed, Adnan, Lazaros, Lazarou, Mulita, Francesk, Bhasker, Aparna Govil, Kermansaravi, Mohammad, Mahdi, Ahmed Salah, Kayyal, Mohd Yasser, Sakran, Nasser, Frattini, Francesco, Alabdallah, Nadeem Bilal, Sylvester, Kimutai Ronoh, Abdelhamid, Ibrahim, EL Fawal, Mohamad Hayssam, Allawgalli, Aiman Nuri, Dulskas, Audrius, Voon, Kelvin, Caruana, Clifford, Ballesteros, Guillermo Ponce De Leon, Erdene, Sarnai, Ouadii, Mouaqit, Nashidengo, Pueya Abdulrashid, Hazebroek, Eric, Gunawardene, Ashok, Adeyeye, Ademola, Shariff, Amir H., Liakopulos, Nicolas Juan, Toro-Huamanchumo, Carlos J., Waledziak, Maciej, Borges, Nuno, Shabbir, Azhar, Negoi, Ionut, Neimark, Aleksandr, Abouleid, Ayman, Kim, Guowei, Košir, Jurij Aleš, Ruiz Úcar, Elena, Hamid, Hytham K. S., Masri, Ruqaya, Ozmen, Mahir, Taha, Safwan, Goodman, Elliot, AL-Naggar, Hamza, Authors:, AMBROSE Audit Collaborative, Ghouali, Amin Khayreddine, Wafa, Benbrahmin, Allel, Sahli, Elkacem, Bouzenita Mohamed, Ibagherache, Razika, Ouyahia, Amel, Rais, Mounira, Seddik, El Hachemi, Kouicem, Aya Tinhinane, Abdoun, Meriem, Bouaoud, Souad, Boucenak, Kamel, Khalfa, Safia, Brahim, Bouflih, Tidjane, Anisse, Tabeti, Benali, Meharzi, Sif-El-Islem, Larbi, Hakim, Derdous, Reda, Abderaouf, Bettahar, Bouregba, Nadjette, Boukaaabeche, Fouad, Djeroua, Kamel, Sabrin, Naît Ali, Khennaf, Leila, Mesli, Smain Nabil, Ghouali, Amin Khayreddine, Aissat, Abdelnour, Pantoja Pachajoa, Diana Alejandra, Alvarez, Fernando Andrés, Milagros, Nicole Benitez, Medrano Ortiz Palombarini, Valentina Cecilia, Petracchi, Enrique, Quesada, Matias, Canullan, Carlos, Varela, Jose, Posada, Hector, Du Plessis, Cristina, Valenzuela, José Ignacio, Zurita, Melissa Andrea Fernandez, Nasim, Sana, Bowles, Thomas Alexander, Yeboah, Edward, Nair, Roshan, Felsenreich, Daniel Moritz, Omarov, Taryel, Allahverdiyeva, Nigar, Abizade, Rashad, Adamovich, Dmitry Mikhailovich, Barreiro, Thiago Alvim, Cunha, Hercio Azevedo de Vasconcelos, Castilho, Michel Victor, Ferreira, Rafael Meneguzzi Alves, Legati Junior, Ronaldo, Dias, Lorenzo, Wietzycoski, Cacio, Jacobi, Everton Walter, Julianov, Alexander, Saroglu, Azize, Yuruk, Shaban, Dimov, Rosen, Ivanov, Valentin, Dardanov, Dragomir, Yang, Wah, Wei, Zhuoqi, Liang, Hui, Millán, Carlos A., Urbina, Mónica, Cubieros, Jorge, Acosta, Shary, Jiménez, Julián, Boras, Zdenko, Vlahović, Ivan, Koronakis, Nikolaos, González, Ricardo Andrés Buenaño, Ojeda, Cintya Anabel Llerena, Aspiazu-Briones, Cristhian Gonzalo, Martinez-Espinoza, Dario Javier, Rivas-Torres, Eduardo Antonio, Lincango Naranjo, Eddy P., Aldabash, Lama, Shaat, Iman, Alsayed, Mohamed Moneer Abulfotooh, Bali, Eslam, Ayoub, Mohamed Abdel Maksoud, Mohamed, Mohamed, AL Sayed, Mohamed, Elshinnawy, Azza Mohamed Gaber, Tayiawi, Mosaab, Abu-Elfatth, Ahmed Mohammed, Mohamed, Ahmed Emadelden, Elzayat, Ibrahim, Hassan, Ahmed Abdelmotaleb Mohamed, Madany, Mohie El-Din Mostafa, EL-Kassas, Mohamed, Omar, Wael, Tawheed, Ahmed, Elfeki, Hossam, Shalaby, Mostafa, Sakr, Ahmad, Elghrieb, Ahmed Ezzat, Warda, Hisham Hazem, Sadek, Mirna, Mostafa, Mohamed, Elghadban, Hosam, Awad, Selmy, Madany, Mohie El-Din Mostafa, Maghraby, Ahmed Mostafa, Saleem, Abd-El-Aal Ali, Mahmoud, Ahmed Gaber, Madany, Mohie El-Din Mostafa, Maghraby, Ahmed Mostafa, Saleem, Abd-El-Aal Ali, Mahmoud, Ahmed Gaber, Gebril, Mahmoud, Omar, Mohammed Ahmed, Safy, Ahmed Mohamed, Saada, Ahmed, Mohamed Ads, Alaa, Diaz, Angel, Gutiérrez, Emmanuel, Salinas, Hanton, Zimmermann, Perrine, Rhaiem, Rami, Kianmanesh, Reza, Efthymiou, Evripidis, Konstantinidis, Sergios, Drogouti, Maria, Katsourakis, Anastasios, Papadoliopoulou, Maria, Michalopoulos, Nikolaos V., Sidiropoulos, Theodoros A., Kokoropoulos, Panagiotis, Ioannidis, Argyrios, Konstantinidis, Michael, Charalampakis, Vasileios, Sotiropoulou, Maria, Pantelis, Athanasios G., Kapiris, Stylianos, Tsiampas, Ioannis, Tseliou, Vasiliki, Paspala, Anna, Nastos, Constantinos, Ioannidis, Orestis, Symeonidis, Savvas, Anestiadou, Elissavet, Zapsalis, Konstantinos, Machairas, Nikolaos, Keramida, Myrto D., Dorovinis, Panagiotis, Kyakalos, Stylianos, Stavratis, Fotios, Papadopoulos, Aristeidis, Manioti, Eleni, Mouzakis, Odysseas, Nikolaou, Vassiliki, Barkolias, Evangelos, Mulita, Francesk, Verras, Georgios-Ioannis, Vasileios, Mousafeiris, Triantafyllou, Alexandra, Triantafyllou, Tania, Matthaiou, Georgia, Frountzas, Maximos, Toutouzas, Konstantinos G., Tampaki, Ekaterini Christina, Bellou, Olga, Papazacharias, Christos, Moris, Dimitrios, Felekouras, Evangelos, Stamou, Konstantinos, Tsiotos, Gregory, Fanidou, Domna, Drakos, Panagiotis Alexandros, Schizas, Dimitrios, Syllaios, Athanasios, Vailas, Michail, Georgiadou, Despoina, Zampitis, Nikolaos, Marinis, Athanasios, Stefou, Fotini, Melachroinopoulos, Nikolaos, Papaconstantinou, Dimitrios, Dellaportas, Dionysios, Lykoudis, Panagis, Lasithiotakis, Konstantinos, Magouliotis, Dimitrios, Zacharoulis, Dimitris, Laliotis, Aggelos, Gkionis, Ioannis, Baksi, Aditya, Lodha, Mahendra, Kaur, Supreet, Guha, Shanto Shila, Gupta, Amit, Rajput, Deepak, Sharma, Oshin, Huda, Farhanul, Hassan, Mohsin, Singh, Sudhir Kumar, Basu, Somprakas, Kumar, Navin, Mallik, Dhiraj, David, Lena Elizabath, Agrawal, Aditi, Pillai, Vinod G., Muralee, Meera, Haque, Parvez David, Veetil, Sreejith Kannumal, Mahajan, Amit, Jain, Deepak, Annareddy, Dinakar Reddy, Bahadur, Akshay, Bisht, Shankar Dutt, Kashmira, Mayank, Shukla, Ashish, Pandey, Anshuman, Sarda, Hitesh, Agarwalla, Ramesh, Kumar, Ashwani, Aggarwal, Manisha, Sharma, Akanksha, Paras, Alagarsamy, Raghuraman, Chokkalingam, Gangalakshmi, Bhalla, Bhavneet Singh, Ahamad, Mohammad Nafees, Ahmad, Nabeel, Oommen, Ashok Ninan, Subbarayan, Shankar, Mohan, Karthikeyan, Ashraf, Aabid, Singh, Cheena, Jaswal, Kamaljeet S., Minhas, S. S., Bains, Lovenish, Lal, Pawanindra, Das, Jayanta K., Rangad, Gordon M., Lepcha, Alfred, Kynjing, Hampher, Islam, Md Samsul, Shangpliang, Virginia, Thota, Anuroop, Pinnamraju, Karthikeya, Surapaneni, Sushama, Gurram, Ram Prakash, Reddy, Mandapati Mallikarjuna, Inteti, Kamalesh, Srikanth, V., Reddy, V. Jayapala, Parikh, Chirag, Shah, Shakshi, Chaudhary, Priya, Bhojwani, Rajesh, Gupt, Pranoy, Srimal, Ankur, Sharma, Abadhesh, Tayal, Nikhil, Ramu, Gopi, Paul, Ratnadeep, Khuroo, Suhail, Wani, Ajaz, Gusani, Rajat, Gupta, Rahul, Khanduri, Archana, Singh, Arvind, Singh, Sudhir, Pokharia, Pradip, Sharma, Ankur, Venkatappa, Sunil Kumar, Soni, Vishal, Suprapto, Bambang, Tobroni, Ahmad, Kermansaravi, Mohammad, Mousavimaleki, Ali, Eghbali, Foolad, Eghbali, Foodlad, Mashkouri, Nazanin, Jasim, Ali, Kadhim, Nammer, Jalaawiy, Humam, Sakran, Nasser, Haj, Bassel, Asadi, Ahmad, Marom, Gad Amram, Szydlo, Gabriel Shein, Demma, Jonathan Abraham, Pikarasy, Alon J., Targa, Simone, Buzzi, Gianluca, Sanna, Andrea, Currò, Giuseppe, Ammendola, Michele, Palomba, Giuseppe, Aprea, Giovanni, Capuano, Marianna, Basile, Raffaele, Argenio, Giulio, Annecchiarico, Mario, Ferraro, Daniele, Cacciatore, Chiara, Vennarecci, Giovanni, Granieri, Stefano, Bonomi, Alessandro, Frontali, Alice, Cotsoglou, Christian, Centonze, Danilo, Licciardello, Alessio, Martines, Gennaro, Tomasicchio, Giovanni, Veroux, Massimiliano, Gioco, Rossella, Distefano, Costanza, calabrò, Marcello, Caputo, Damiano, LA Vaccara, Vincenzo, Cammarata, Roberto, Farolfi, Tommaso, Degrate, Luca, adjei antwi, Stella Konadu, Brisinda, Giuseppe, Fico, Valeria, Mirco, Paolo, Biondi, Alberto, Persiani, Roberto, Giovinazzo, Francesco, Frongillo, Francesco, Evola, Giuseppe, Ferrara, Francesco, Altomare, Michele, Benuzzi, Laura, Pezzoli, Isabella, Borghi, Alessandra, Cimbanassi, Stefania, Dapri, Giovanni, Nessi, Chiara, Bianco, Federica, Uccelli, Fara Margherita Letizia, Viganò, Luca, Cordaro, Giuseppe, Dionigi, Gianlorenzo, Pino, Antonella, Morezzi, Daniele, Rizzo, Roberta, Convertini, Girolamo, Vallicelli, Carlo, Catena, Fausto, Verdi, Daunia, Mondi, Isabella, Da Lio, Corrado, Loss, Greta, D'acapito, Fabrizio, Di Pietrantonio, Daniela, Tauceri, Francesca, Ercolani, Giorgio, Bottino, Vincenzo, Bosco, Alfonso, Canfora, Alfonso, Chiappetta, Sonja, Frattini, Francesco, Rizzi, Andrea, Breda, Marta, Quaglino, Francesco, Festa, Federico, Savasta, Francesca Maria Chiara, Fiore, Alessia, Soncini, Stefania, Giordano, Alessio, Carganico, Giacomo, Cocchi, Lorenzo, Epis, Lorenzo, Moretto, Gianluigi, Casaril, Andrea, Inama, Marco, Harmony, Impellizzeri, Michail, Creciun, Alessandro, Vitali, Piazza, Martina, Basile, Guido, Pinotti, Enrico, Lapolla, Pierfrancesco, Mingoli, Andrea, Brachini, Gioia, Cirillo, Bruno, Campanelli, Michela, Gentileschi, Paolo, Rossi, Stefano, Picardi, Biagio, Savia, Eleonora, Olmi, Stefano, Uccelli, Matteo, Balla, Andrea, Lepiane, Pasquale, Saraceno, Federica, Coppola, Alessandro, Clementi, Marco, Paniccia, Federico, Grasso, Antonella, Tartaglia, Nicola, Pavone, Giovanna, Ambrosi, Antonio, Angelico, Roberta, Manzia, Tommaso Maria, Materazzo, Marco, Tisone, Giuseppe, Calini, Giacomo, Bresadola, Vittorio, Morinelli, Vittoria, Matucci-Cerinic, Pietro, Michelutti, Luca, Luzzi, Andrea-Pierre, Romairone, Emanuele, Carrabetta, Salvatore, Marzorati, Sara, Khamees, Almu'atasim, Mohammad, Alyaman Meizer, Alananzeh, Samah, AL Momani, Salam, Hijazin, Nadeen, Tarawneh, Shahd Abdulhadi, Alheji, Hazim, Alhajji, Amer, AL-Shkirat, Ahmad Ghassan, Alzoubi, Mohammad N., AL Manasra, Abdel Rahman Abdullah, Elayyan, Rasheed, Jamous, Hussam, Dardour, Mohammad, Mahafdah, Mahmoud Rawhi, AL Hammoud, Amr Ahmad, AL Quran, Mahmoud, Bosire, Friday, Zakaria, Ramy Magdy, Abdullah, Hawraa Reda, Tarboush, Abdullah, Hasan, Wisam Abraheem, Kredan, Ali Abdulnasir, Zreeg, Dafer, Muftah, Aiman, Koshlaf, Abdulmajeed, Albadi, Doaa, Abunaaja, Hayat Omar, Otman, Rema, Ben Hamida, Bahaeddin, Amnaina, Mohamed Gamal, Alhaddad, Hayfa Faraj, Shuaip, Nouran Musbah, Buderbala, Yasmeen, Hamad, Ahmad Faraj, Shames, Haitam, Bakeer, Hiba Bileid, Alkaseek, Akram, Shalabi, Laila Esnoussi, Alhadi, Aliya Salih, Ahjaaz, Mabroukah A. A., Zgheel, Usama, Abdulmoula, Zenab, Younis, Hoda, Aboubeirah, Mohammed Khayri, Binnawara, Muhannud Hassan, Arebi, Jaber Abdusslam, Alboueishi, Asraa Ali, Mohammed Ammar, Sara, Abdedalmajed Rhuma, Heba, Alsori Alharari, Mohamed, Endisha, Salahaldin Emhemmed, Ng, Chin E'ng, Lee, Yu Wei, Tay, Yen Zhir, Abdul Manan, Nurhidayah, Tajul Arifin, Mohd Syazwan, Khairul Anuar, Ariff Solihin, Kumar, Neeraj, Maiyauen, Thanesh Kumar, Zakari, Andee Dzulkarnaen, Fathi, Mohd Azem, Izhar, Mas Izzati, Awang Dahlan, Dayang Azzyati, Mokhtar, Suryati, Samsudin, Syakirah, Jaktaram Singh, Balraj Singh, Arumugam, Mohanasundram Pillai, Theevashini, Krishnasamy, Manap, Shaiful Amir, Yong, Chon Woon, Mohamed Nabil, Mohamed Nazri, Lim, Jolene Sze Huey, Voon, Kelvin, Cheng, Shi Yu, Amanullah, Muhammad Mubarak, Ahmed, Nurzarina, Lim, I. Vern, Mazlan, Mohd Rashid, Sivananthan, Asokumar, Yussra, Yusoff, Puvisny, Shanmugam Nathan, Chua, Ian Bin, Sharman, Matthew, Siow, Sze Li, Axiak, Jessica, Dowling, Jessica, Portelli, Mark, Caruana, Clifford, Beristain-Hernandez, Jose-Luis, Vazquez-Romero, Odette-Desiree, Jaime-Silva, Jessica, Cadena-Guzman, Joaquin-Homar, Aceves-Ayala, Jose Miguel, Treviño -Meza, Jasmin Marielena, Erik, Efrain-Sosa-Duran, Guzman-Águilar, Rafael, María, Zuñiga, Jose Edusrdo, Pinto Angulo, Victor Manuel, Trejo-Avila, Mario, Bozada-Gutierrez, Katya, Carrion, Christian, Gómez-Herrera, María Norma, García-Gómez, Aurora, Pimentel Melendez, Samuel Arnulfo, Bautista Martinez, Abelardo Olaf, Nuñez DE LA Rosa, Sofia, Inchaustegui Tinajero, Jose, Sordo Lima, Diego Ervey, Pérez-Soto, Rafael Humberto, Hernández-Acevedo, Juan David, Domínguez-Rosado, Ismael, Mercado-Díaz, Miguel Ángel, Sierra-Salazar, Mauricio, Pimienta, Ana, Erdene, Sarnai, Sandag, Erdene, Orgoi, Sergelen, Ochir, Chimedsuren, Batmunkh, Munkhbat, Ouazzani, Et-tayab, EL Fdili, Mostafa, Hassani Ibn Majdoub, Karim, Mazaz, Khalid, Errachidy, Meriem, Mekondjo Nashidengo, Pueya, William Quayson, Francis, Tabiri Abebrese, John, Sushmita Seibes, Sharifa, Tjipetekera, Rejoice, Lim, Yukai, Haimona, Mairarangi, Mcclean, Sophie F., Rodriguez, Shaymar Eddylena Gutierrez Rodriguez, Lopez, Acris Arnoldo Arauz Lopez, Adetoyese Adeyeye, Ademola, Nwabuoku, Emeka Stanley, Mohammed Bello, Usman, Musa Umar, Bashir, Makama, Jerry Godfrey, Aminu, Bashir, Oriakhi, Steve-nation Nehiweze, Mosanya, Arinzechukwu Obi, Omon, Henry Ehidiamen, Wuraola, Funmilola Olanike, Ishola, Adegoke, Ulasi, Ikechukwu, Irowa, Omorodion O., Agbonrofo, Peter I., Irmiya, Solomon, Ammar, Ahmed Siddique, Khattak, Shehrbano, Qureshi, Sajid, Bashir, Nida Wahid, Jalal, Hira, Kamran, Ali, Sultan, Rizwan, Fatima, Mishal, Ali, Muhammad, Farooq, Omama, Khan, Muhammad Taha Junaid, Soomro, Umar, Saleem, Amna, Khawaja, Uzzam Ahmed, Martins, Russell Seth, Dawani, Surrendar, Siddiqui, Adeela, Khan, Madiha Masood, Jafferi, Salman, Faizi, Tashaba Qaiser, Talib, Vikash, Ali, Danish, Javed, Mahad Hassan, Rasheed, M. Ahsan, Mughal, Javeed, Ijaz, Nadeem, Rehman, Imtiaz ur, Aurangzeb, Mahmud, Ahmed, Nisar, Jan, Zaka Ullah, Khan, Shahzeb, Aziz, Sarmad Saeed, Shamim Afridi, Shehzadi Ghazala, Maroof, Syed Asad, Khan, Muhammad Imaran, Zarin, Muhammad, Naz, Farah, Jan, Zakaullah, Asghar, Syed Tanseer, Ali, Sana, Azam, Saim, Jalil, Hira, Naqvi, Hasham, Ashraf, Fariha, Siddiqui, Tayyab, Murataza, Ghulam, Bari, Hassaan, Ahmed, Hassan, Jayyab, Mustafa Abu, AL-Dahdouh, Mosheer, Echeverria, R. Rainer, Mendoza, Mario Ynoue, Kisielewski, Michal, Stefura, Tomasz, Richter, Karolina, Klos, Nikola, Walędziak, Maciej, Bartosiak, Katarzyna, Komorowska, Katarzyna, Silvestre, Miguel Trigo, Santos, Cláudia, Gil, Isabela, Cardoso, Vasco Silva, Melo, Miguel Rocha, Lima, Rita, Bolota, Joana, Cotovio, Manuel, Grigorean, Valentin Titus, Stoian, Alexandru Rares, Diana Andreea, Draghici, Toma, Elena A., Lunca, Sorinel, Zarnescu, Narcis, Costea, Radu Virgil, Litvin, Andrey, Aljohani, Emad, Zaid, AbdelNasser, Shaar, Khalid, Awaf, Khalid, Zakarneh, Eman, Alowayrdi, Tumadher, Alyami, Fatimah, Alamer, Adam, Taha, Mohamed Y., Chowdhury, Sharfuddin, Alshahrani, Salem, Panyko, Arpád, Košir, Jurij Aleš, Grosek, Jan, Tomažič, Aleš, Pintar, Tadeja, Ruiz Úcar, Elena, Castro, Ernest, Sambrano, David, Garcia-Dominguez, Rafael, Tusa, Claudio, Landaluce-Olavarria, Aitor, Estraviz-Mateos, Begoña, González, Jaime, Roca, Begoña, Jayarajah, Umesh, Subasinghe, Duminda, Sivaganesh, Sivasuriya, Hamid, Hytham K. S., Galal-Eldin, Sami, Eldirdiri, Sami, Elnour, Moheyaldien, Asaad, Nada, Mohammed, Musab, Hassan, Luden Saifaldawla, Mohamed, Khalid Osman, Abdelrahman, Salma Ahmed, Alsadeg, Hajer, Ali, Ahmed Altigani Elhadi, Elsiddig Musa, Reem Abdalla, Sarih, Monira, Ismail, Samir, Ahmed, Omer Albasher Almaki, Taj Eldeen, Samaher Taj Eldeen Hassan, Elsiddig, Kamal Elzaki, Elhasan, Mohamed Elghazali Ahmed Basheer, Karamelghani, Mohammed A. F., Mohammed, Ozaz, Adam, Albushra Altayeb, Barakat, Habab Osman, Elhadi, Rawan Elnoman, Alnaji, Abdallh Abdalmajid, Mohamed, Esraa Hamza Abdel Ghani, AL Houri, Hasan, Alhouri, Ahmad, Soliman, Alnour Khmeis, AL Ahmad, Mohamad, Kayali, Ahmad Amir, Nasani, Mohannad, Nerabani, Yaman, Ashkar, Eman, Sawas, Mohamad Nabhan, Aldirani, Alaa N., Zahreddin, Amnah, Alasmar, Ammar M., Hasan, Lilav, Alhosen, Mohammed Alahmed, Klib, Mohamad, Rahman Hammadieh, Abdul, Chikh Salem, Mhd Tarek, Ghandour, Munir, Sara, Samer, Kara Tahhan, Nour, Albani, Nour, Alsaid, Bayan, Ahmad, Basel, Almaydaani, Mohamad, Abbas, Morhaf, Nanaa, Mohamad, Aloulou, Mohammad, Kudra Danial, Aghyad, Khaled, Ahmad, Latouf, Rama, Saeed, Diyala, Ghazal, Ahmad, Masri, Ruqaya, Hamdan, Ola, Ayoub, Kusay, Kadoura, Lama, Atli, Abd Alazeez, Zayat, Hussein, Niazi, Ammar, Dabbit, Abdallah, Dahrouj, Wissam, Alhaj, Ahmad, Dabbagh, Ezeddin, Aldaher, Mohammad, Bsata, Adel, Shahrour, Mohamad Zaher, Khusruf, M. Akram, Wali, Tayssier, Aldroubi, Mohammad Tayeb, Almoshantaf, Mohammad Badr, Alahmad, Mohammad Abdullah, Leen, Jamil, AL-Nokta, Aya, Bakri, Ashraf, Arnaout, Ahmad Yamen, Ibrahim, Hamza, Nastah, Samer, Kanaan, Samir, Rasheed, Omeed, Mohammad, Alttaher, Bokal, Zied, Gafsi, Besma, Baccar, Marwen, AMMAR, Houssem, Ermis, Ilker, Tokocin, Merve, Kabuli, Hamit Ahmet, Tokocin, Onur, Ergenç, Muhammer, Gülşen, Taygun, Erginöz, Ergin, Uludağ, Server Sezgin, Bozkir, Haktan Övül, Zengin, Kağan, Özçelik, Mehmet Faik, Zarbaliyev, Elbrus, Çağlikülekçi, Mehmet, Böler, Deniz, Aktokmakyan, Talar Vartanoglu, Peksen, Caghan, Savas, Osman Anil, Sumer, Aziz, Guldogan, Cem Emir, Ozmen, Mahir, Kaplan, Mehmet, Colak, Elif, Şanli, Ahmet Necati, Kilani, Ayoub Ibrahim, Kamer, Erdinc, Namdaroglu, Ozan, Ahmed, Fuad, Marzouk, Ahmed, Harbinson, Daniel, Abdulrahman, Hassal, Ali, Heba, Abousamra, Mohamed, Di Maggio, Francesco, Abushawaly, Amr, Badawi, Marwa, Rahman, Atiqur, Jenner, Deborah, Said, Amira, Ahmed, Kazi, Watali, Yawar, Soggiu, Fiammetta, Sheth, Hemant, Drymousis, Panagiotis, Caterson, Jessica, Mehmood, Saqib, Wadhawan, Himanshu, Strachan, David, Mcelroy, Luke, Chauhan, Munish, Morgan, Richard, Mamun, Muhammad, Tora, Mir, Shamali, Awad, ML Williamson, James, Slim, Naim, Mark, Safiya, Huppler, Lucy, Crane, Sophie, Mcgrath, Polly, Fung, James Tak Kwan, Kok, Siu Yan, Bond-Smith, Giles, Dawani, Aruna, Shamardal, Aliaa, Ahmed, Mohammed M. Madi, Obasi, Chekwas, Gala, Tanzeela, Elshaer, Ahmed Mohammed, Warner, Sian, Nathadwarawala, Pooja, Askari, Alan, Pandanaboyana, Sanjay, Thakkar, Rohan, Barbour, Fraser, Finch, Jonathan Guy, Habib, Helai, Ansong, Eric, Attard, Joseph, Aujayeb, Avinash, Gupta, Ajay, Fale, Madeleine, Gupta, Anuj, Gajdhar, Aniq, Fareed, Khaleel, Elfeky, Mohamed Abdelfattah, Ashry, Mohamed, Kaur, Mandeep, Faycal Mirghani, Shaza, Tanveer, Yousaf, Albendary, Mohamed, Bhattacharya, Pratik, Abdulaal, Gamaleldeen, Ghufran, Muhammad Ali, Ghanem, Ahmed, Leong, Darren, Mamidanna, Ravikrishna, Aamery, Amaar, Tewari, Nilanjana, Williams, Greg, Tariq, Hamza, Klair, Anjeevan Kaur, Jones, Katie, Selvachandran, Haran, Day, Arthur, Ajmani, Adesh, Parmar, Chetan, Bosch, Karen, Young, Richard, Chan, Alvina, Silva, Yashodha, Kureci, Abdulrahman, Paranyak, Mykola, Shepetko-Dombrovskii, Oleksii, Chooklin, Serge, Chuklin, Serhii, Dutka, Yaromyr, Maqbool, Baila, Gill, Ali Abdullah, Jan, Azalea, Murali, Tharani, Alhajami, Faris, Atiah, Nora, Nadeesh, Areej, and Almaqdi, Sarah

Published
2025
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118. Evidence of microstructural evolution linked to non-monotonic distribution of micromechanical properties induced by shot peening.

Author

Lu, Guoxin, Wang, Qiang, Attard, Bonnie, Su, Huhu, and Zheng, Shijian

Subjects
RESIDUAL stresses, MATERIAL plasticity, MECHANICAL alloying, TRANSMISSION electron microscopy, SHOT peening, SURFACES (Technology)
Abstract

• The residual stress and microhardness of shot-peened nickel-based superalloys are tested. • The non-monotonicity of micromechanical property distribution induced by shot peening is pointed out. • The microstructure changes of shot-peened GH4169 superalloy are analyzed at the nanoscale. • The GH4169 superalloy undergoes plastic deformation through dislocations and nano twins. The residual stress field induced by surface strengthening processes such as mechanical shot peening and other forms of plastic deformation does not generally exhibit a simple "monotonic" distribution trend. Some researchers have analyzed this fact from a mechanical perspective based on Hertz theory. However, the micro/nano-scale microstructural changes corresponding to the distribution of residual stress fields still appear to be lacking. In this study, we focused on a widely used material in aviation manufacturing, namely nickel-based superalloy GH4169, as our experimental material. We subjected GH4169 alloy to mechanical strengthening treatment using a shot peening intensity of 0.25 mmA, followed by quantitative testing of micromechanical performance indicators such as microhardness and residual stress. To thoroughly investigate the relationship between micromechanical properties and microstructure changes, we utilized transmission electron microscopy (TEM) to observe and analyze shot-peened materials at different depths. Our findings revealed that the most severe microstructural distortion induced by mechanical shot peening in GH4169 alloy was likely to occur within a depth range of 25 to 75 µm. This observation aligns with the actual phenomenon that the maximum microhardness and maximum residual compressive stress did not manifest on the outermost surface of the material. By presenting a detailed analysis of deformation defects such as dislocations, stacking faults, and twinning in different depths of mechanically strengthened layers, our study contributes to a deeper understanding and practical application of post-processing technologies based on plastic deformation. [Display omitted] [ABSTRACT FROM AUTHOR]

Published
2025
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119. Effects of local urban characteristics and driving behaviour on injuries among pedestrians and cyclists in Malta

Author

Attard, Maria, Bergantino, Angela Stefania, and Intini, Mario

Abstract

Cities across the world are seeking to establish more sustainable urban environments and safer and greener transport systems. This with a view to reduce road accidents, tackle congestion, reduce air and noise pollution and improve overall public health and liveability. Within these aspirations, improving the walking and cycling environments and reducing road accident injuries among these vulnerable road users would serve to support and encourage greener modes of transport and more sustainable cities. Pedestrians and cyclists are disproportionally often the victims of road accidents. As vulnerable groups, understanding the factors that influence the number and that affect the severity of injury, can greatly contribute to several targets and commitments which cities and even countries have adhered to in the past whether for health, environment or societal goals. Research in island contexts are particularly important due to the increase in car dependence across a number of developing and developed island states and the increasing risk exposure for pedestrians and cyclists. This study examines the pedestrian and cycling road accident injuries in Malta using an extensive database of injuries for the period 2005 and 2021 and analyse, using a Poisson panel random effects model, the relationship between local population, urban land use characteristics and driving behaviour, and how they affect injury severity. The analysis is done at local level using a number of variables in the model to determine effects. These include the population of each locality, local land use characteristics such as the presence of (main) commercial activity, a health centre or an industrial estate that have an impact on the number of those walking and cycling, and the number of speeding contraventions issued over time in various locations around the islands as a proxy for driving behaviour. Furthermore, the study presents the islands case study and describes road accident injury trends over time and in context. Findings point towards a link between slight and grievous injuries and commercial, health and industrial activities. Strong links are also found with population changes. Speeding is only linked to grievous injuries. Fatal accidents are related to the location of industrial activity and population. The paper concludes with some recommendations to improve road safety conditions for pedestrians and cyclists.

Published
2025
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120. Immunofluorescence Protocol for Characterization of Platelet and Leukocyte Binding in Extracorporeal Membrane Oxygenation (ECMO) Circuits

Author

Cai, Tengyi, Burton, Matthew, McCafferty, Conor, Van Den Helm, Suelyn, Letunica, Natasha, Attard, Chantal, Horton, Stephen, Bottrell, Steve, Schultz, Bradley, MacLaren, Graeme, Chiletti, Roberto, Best, Derek, Johansen, Amy, Newall, Fiona, Butt, Warwick, d’Udekem, Yves, Monagle, Paul, and Ignjatovic, Vera

Abstract

The continuous contact between blood and the foreign surface of the extracorporeal membrane oxygenation (ECMO) circuit contributes to hemostatic, inflammatory, and other physiological disturbances observed during ECMO. Although previous studies have extensively investigated blood samples from patients on ECMO, cell adsorption to the ECMO circuit as an additional factor that could potentially influence clinical outcomes, has largely been overlooked. Here we provide a detailed immunofluorescence (IF) protocol designed to characterize cellular binding on ECMO circuits collected from patients. Extracorporeal membrane oxygenation circuits were collected from three pediatric patients and an albumin primed-only ECMO circuit was used as control. Circuit samples from five different sites within each ECMO circuit were collected and processed for the IF protocol. CD14 and CD42a antibodies were used to identify platelets and leukocytes bound to each ECMO circuit sample and images captured using inverted fluorescence microscopy. The protocol enables the comprehensive characterization of platelet and leukocyte binding to ECMO circuits collected from patients, which could in turn extend our knowledge of the characteristics of circuit binding and may provide guidance for improved ECMO circuit design.

Published
2025
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125. Circulating androgen receptor gene amplification and resistance to 177Lu-PSMA-617 in metastatic castration-resistant prostate cancer: results of a Phase 2 trial

Author

De Giorgi, Ugo, Sansovini, Maddalena, Severi, Stefano, Nicolini, Silvia, Monti, Manuela, Gurioli, Giorgia, Foca, Flavia, Casadei, Chiara, Conteduca, Vincenza, Celli, Monica, Di Iorio, Valentina, Calistri, Daniele, Matteucci, Federica, von Eyben, Finn Edler, Attard, Gerhardt, and Paganelli, Giovanni

Published
2021
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126. Plasma tumour DNA as an early indicator of treatment response in metastatic castration-resistant prostate cancer

Author

Conteduca, Vincenza, Wetterskog, Daniel, Scarpi, Emanuela, Romanel, Alessandro, Gurioli, Giorgia, Jayaram, Anuradha, Lolli, Cristian, Tandefelt, Delila Gasi, Schepisi, Giuseppe, Casadei, Chiara, Wingate, Anna, Matteucci, Federica, Paganelli, Giovanni, Gonzalez-Billalabeitia, Enrique, Demichelis, Francesca, De Giorgi, Ugo, and Attard, Gerhardt

Published
2020
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127. Expansion for Quantum Statistical Mechanics Based on Wave Function Symmetrization

Author

Attard, Phil

Subjects
Condensed Matter - Statistical Mechanics
Abstract

An expansion for quantum statistical mechanics is derived that gives classical statistical mechanics as the leading term. Each quantum correction comes from successively larger permutation loops, which arise from the factorization of the symmetrization of the wave function with respect to localized particle interchange. Explicit application of the theory yields the full fugacity expansion for the quantum ideal gas, and the second fugacity coefficient for interacting quantum particles, which agree with known results. Compared to the Lee-Yang virial cluster expansion, the present expansion is expected to be more rapidly converging and the individual terms appear to be simpler to evaluate. The results obtained in this paper are intended for practical computer simulation algorithms for terrestrial condensed matter quantum systems., Comment: Quantum Physics. 40 pages. Version 2 clarifies Sec. IIB and App. A

Published
2016

128. Weyl gravity and Cartan geometry

Author

Attard, Jeremy, François, Jordan, and Lazzarini, Serge

Subjects
General Relativity and Quantum Cosmology, High Energy Physics - Theory, Mathematical Physics
Abstract

We point out that the Cartan geometry known as the second-order conformal structure provides a natural differential geometric framework underlying gauge theories of conformal gravity. We are concerned by two theories: the first one will be the associated Yang-Mills-like Lagrangian, while the second, inspired by~\cite{Wheeler2014}, will be a slightly more general one which will relax the conformal Cartan geometry. The corresponding gauge symmetry is treated within the BRST language. We show that the Weyl gauge potential is a spurious degree of freedom, analogous to a Stueckelberg field, that can be eliminated through the dressing field method. We derive sets of field equations for both the studied Lagrangians. For the second one, they constrain the gauge field to be the `normal conformal Cartan connection'. Finally, we provide in a Lagrangian framework a justification of the identification, in dimension $4$, of the Bach tensor with the Yang-Mills current of the normal conformal Cartan connection, as proved in \cite{Korz-Lewand-2003}.

Published
2015
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129. Direct Measurement of the Surface Tension of Nanobubbles

Author

Attard, Phil

Subjects
Condensed Matter - Soft Condensed Matter, Condensed Matter - Statistical Mechanics, Physics - Chemical Physics
Abstract

It is shown that when the nanobubble contact line is pinned to a penetrating tip the interface behaves like a Hookean spring with spring constant proportional to the nanobubble surface tension. Atomic force microscope (AFM) data for several nanobubbles and solutions are analysed and yield surface tensions in the range 0.04--0.05 N/m (compared to 0.072 N/m for saturated water), and supersaturation ratios in the range 2--5. These are the first direct measurements of the surface tension of a supersaturated air-water interface. The results are consistent with recent theories of nanobubble size and stability, and with computer simulations of the surface tension of a supersaturated solution., Comment: 16 pages, 12 figures

Published
2015

130. 'How much?' Is Not Enough - An Analysis of Open Budget Initiatives

Author

Tygel, Alan Freihof, Attard, Judie, Orlandi, Fabrizio, Campos, Maria Luiza Machado, and Auer, Sören

Subjects
Computer Science - Computers and Society, Computer Science - Databases, J.1, E.m
Abstract

A worldwide movement towards the publication of Open Government Data is taking place, and budget data is one of the key elements pushing this trend. Its importance is mostly related to transparency, but publishing budget data, combined with other actions, can also improve democratic participation, allow comparative analysis of governments and boost data-driven business. However, the lack of standards and common evaluation criteria still hinders the development of appropriate tools and the materialization of the appointed benefits. In this paper, we present a model to analyse government initiatives to publish budget data. We identify the main features of these initiatives with a double objective: (i) to drive a structured analysis, relating some dimensions to their possible impacts, and (ii) to derive characterization attributes to compare initiatives based on each dimension. We define use perspectives and analyse some initiatives using this model. We conclude that, in order to favour use perspectives, special attention must be given to user feedback, semantics standards and linking possibilities., Comment: 10 pages. Submited as a full paper to WebSci2015 conference on 20th March 2015

Published
2015

131. Improved Conversation Outcomes after Social Communication Skills Training for People with Traumatic Brain Injury and Their Communication Partners: A Clinical Trial Investigating In-Person and Telehealth Delivery

Author

Rietdijk, Rachael, Power, Emma, Attard, Michael, Heard, Robert, and Togher, Leanne

Abstract

Purpose: The aim of the study was to investigate the effectiveness of social communication skills training (TBIconneCT) for people with traumatic brain injury (TBI) and their communication partners, delivered in-person or via telehealth, on quality of conversations. Method: This study is a clinical trial, including an in-person intervention group (n = 17), a telehealth intervention group (n = 19), and a historical control group (n = 15). Participants were adults at least 6 months post moderate-to-severe TBI with social communication skills deficits and their usual communication partners. Participants completed a casual and purposeful conversation task at pre-intervention, postintervention, and a follow-up assessment. A blinded assessor evaluated conversations using the Adapted Measure of Participation in Conversation and the Adapted Measure of Support in Conversation. Treatment effects were examined by comparing groups on change in ratings between pre- and posttraining. Maintenance of effects was examined using change between posttraining and follow-up assessment. The trial protocol was registered with the Australian New Zealand Clinical Trials Registry (ACTRN12615001024538). Results: Trained participants with TBI had significant improvements in participation in casual conversation compared to controls. Trained communication partners also had significant improvements compared to controls on ratings of support in casual conversations. However, treatment effects were not maintained at follow-up for two of eight measures. Comparisons between outcomes of in-person and telehealth groups found negligible to small effect sizes for six of eight measures. Conclusions: The findings reinforce previous studies demonstrating the efficacy of communication partner training after TBI. Telehealth delivery produced similar outcomes to in-person delivery.

Published
2020
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132. A Pilot Randomized Controlled Trial Comparing Online versus Face-to-Face Delivery of an Aphasia Communication Partner Training Program for Student Healthcare Professionals

Author

Power, Emma, Falkenberg, Kate, Barnes, Scott, Elbourn, Elise, Attard, Michelle, and Togher, Leanne

Abstract

Background: Training conversation partners of people with aphasia who use facilitative communication strategies is one method that can improve access to healthcare for people with aphasia. However, the efficacy of communication partner training (CPT) has been investigated almost exclusively in the context of face-to-face (F2F) delivery. Online training may offer more cost-effective and accessible options to a wider range of conversation partners, including student healthcare professionals. Aims: To conduct a pilot randomized controlled trial with student healthcare professionals comparing: (1) an online aphasia CPT program; (2) a F2F CPT program; and (3) no program (control group) on outcomes relating to attitudes and knowledge of aphasia. Methods & Procedures: A 45-min introductory aphasia CPT program was developed using the theories and techniques of Supported Conversations for Adults with Aphasia (SCA)™. A total of 30 first-year undergraduates studying occupational therapy at The University of Sydney were randomly allocated to one of three conditions: online CPT delivery, F2F delivery or delayed training control (no program). Outcomes measures included pre-post-testing with the Aphasia Attitudes, Strategies and Knowledge (AASK) survey. Outcomes & Results: A significant difference existed for the AASK survey pre-post-change scores between the online, F2F and control groups (X[superscript 2](2) = 20.038, p = 0.000). Post-hoc analysis revealed that, compared with the control (Ctrl) group, participants in both the online and F2F groups had significantly higher knowledge of aphasia (Online versus Ctrl: p = 0.000; F2F versus control: p = 0.002), knowledge of facilitative strategies (Online versus Ctrl: p = 0.000; F2F versus Ctrl: p = 0.002), and positive attitudes towards aphasia (Online versus Ctrl: p = 0.031; F2F versus Ctrl: p = 0.032). No significant difference was observed between the online and F2F groups for the Total or any subtotals (p = 1.000). Conclusions and Implications: The results from this pilot randomized controlled trial indicate that online delivery of the 45-min introductory CPT is equally as efficacious as F2F delivery, and thus may be a viable mode of delivery for future aphasia CPT programs. These pilot results pave the way for a larger study that will comprehensively evaluate the efficacy of an online aphasia CPT program for improving attitudes, knowledge and skills in a broad range of student healthcare professionals.

Published
2020
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133. More Reliable Measurements of the Slip Length with the Atomic Force Microscope

Author

Attard, Phil

Subjects
Condensed Matter - Soft Condensed Matter, Physics - Chemical Physics, Physics - Fluid Dynamics, Physics - Instrumentation and Detectors
Abstract

Further improvements are made to the non-linear data analysis algorithm for the atomic force microscope [P. Attard, arXiv:1212.3019v2 (2012)]. The algorithm is required when there is curvature in the compliance region due to photo-diode non-linearity. Results are obtained for the hydrodynamic drainage force, for three surfaces: hydrophilic silica (symmetric, Si-Si), hydrophobic dichlorodimethylsilane (symmetric, DCDMS-DCDMS), and hydrophobic octadecyltrichlorosilane (asymmetric, Si-OTS). The drainage force was measured in the viscous liquid di-n-octylphthalate. The slip-lengths are found to be 3nm for Si, 2nm for DCDMS, and 2nm for OTS, with an uncertainty on the order of a nanometer. These slip lengths are a factor of 4--15 times smaller than those obtained from previous analysis of the same raw data [L. Zhu et al., Langmuir, 27, 6712 (2011). Ibid, 28, 7768 (2012)]., Comment: 18 pages, 11 figures (improved discussion of cantilever drag)

Published
2013

135. Rates of Bile Acid Diarrhoea After Cholecystectomy: A Multicentre Audit

Author

Farrugia, Alexia, Attard, Joseph Anthony, Hanmer, Stuart, Bullock, Stuart, McKay, Siobhan, Al-Azzawi, Marwa, Ali, Roshneen, Bond-Smith, Giles, Colleypriest, Ben, Dyer, Sarah, Masterman, Benjamin, Okocha, Michael, Osborne, Alan, Patel, Rikhilroy, Sallam, Mahmoud, Selveraj, Emmanuel, Shalaby, Samar, Sun, Wenrui, Todd, Fraser, Ward, Joel, Windle, Rebecca, Khan, Saboor, Williams, Nigel, and Arasaradnam, Ramesh P.

Published
2021
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137. Thermodynamic Stability of Nanobubbles

Author

Attard, Phil

Subjects
Physics - Chemical Physics, Condensed Matter - Soft Condensed Matter
Abstract

The observed stability of nanobubbles contradicts the well-known result in classical nucleation theory, that the critical radius is both microscopic and thermodynamically unstable. Here nanoscopic stability is shown to be the combined result of two non-classical mechanisms. It is shown that the surface tension decreases with increasing supersaturation, and that this gives a nanoscopic critical radius. Whilst neither a free spherical bubble nor a hemispherical bubble mobile on an hydrophobic surface are stable, it is shown that an immobilized hemispherical bubble with a pinned contact rim is stable and that the total entropy is a maximum at the critical radius., Comment: 12 pages, 8 figures

Published
2015

141. Quantum Statistical Mechanics. IV. Non-Equilibrium Probability Operator and Stochastic, Dissipative Schrodinger Equation

Author

Attard, Phil

Subjects
Physics - Chemical Physics, Condensed Matter - Statistical Mechanics, Quantum Physics
Abstract

The probability operator for a generic non-equilibrium quantum system is derived. The corresponding stochastic, dissipative Schr\"odinger equation is also given. The dissipative and stochastic propagators are linked by the fluctuation-dissipation theorem that is derived from the unitary condition on the time propagator. The dissipative propagator is derived from thermodynamic force and entropy fluctuation operators that are in general non-linear., Comment: 18 pages

Published
2014

142. Simplified Derivation of the Non-Equilibrium Probability Distribution

Author

Attard, Phil

Subjects
Condensed Matter - Statistical Mechanics
Abstract

A simple and transparent derivation of the formally exact probability distribution for classical non-equilibrium systems is given. The corresponding stochastic, dissipative equations of motion are also derived., Comment: 9 pages, 1 figure

Published
2014

143. Quantum Statistical Mechanics. III. Equilibrium Probability

Author

Attard, Phil

Subjects
Condensed Matter - Statistical Mechanics, Quantum Physics
Abstract

Given are a first principles derivation and formulation of the probabilistic concepts that underly equilibrium quantum statistical mechanics. The transition to non-equilibrium probability is traversed briefly., Comment: 22 pages

Published
2014

144. Early Career Teachers, Mathematics and Technology: Device Conflict and Emerging Mathematical Knowledge

Author

Mathematics Education Research Group of Australasia, Attard, Catherine, and Orlando, Joanne

Abstract

Information and communication technologies (ICT) are positioned in policy/syllabus documents as an essential resource in the teaching of mathematics. Given their youth and lifelong experience with technology, early career teachers (ECTs) are expected to excel in their use of ICT; however, we are not clear on the viability of these expectations and the reality of their teaching practices. This paper draws on data from three separate studies to explore how ECTs use technology in their teaching. Although their use of Interactive Whiteboards did not pose challenges, use of iPads did, and the teachers' mathematical knowledge for teaching appeared to be directly related to how they used their technology.

Published
2014

146. Integrating iPads into Primary Mathematics Pedagogies: An Exploration of Two Teachers' Experiences

Author

Mathematics Education Research Group of Australasia and Attard, Catherine

Abstract

Many primary schools in Australia are investing substantial funds introducing mobile technologies such as iPads to enhance teaching and learning. However, when new technologies are first introduced, teachers are often expected to integrate them into their practices without the support of appropriate professional development. This paper reports on a recent qualitative multiple case study that explored the pedagogical practices implemented by four primary teachers during the first six months of iPad use. Results of the study highlighted that although the iPads do have the potential to enhance teaching and learning of primary mathematics, appropriate professional development that addresses all aspects of technological and pedagogical content knowledge is required to ensure successful integration of new technologies into current teaching practices.

Published
2013

147. Exploring the Use of iPads to Engage Young Students with Mathematics

Author

Mathematics Education Research Group of Australasia, Attard, Catherine, and Curry, Christina

Abstract

One of the most significant influences on student engagement is the teacher's pedagogical practices, including the incorporation of technology into the teaching and learning of mathematics. This paper reports on a qualitative study investigating how the incorporation of iPads into a Year 3 primary classroom during a six month trial influenced teaching and learning practices and student engagement with mathematics. All of the students appear to have had a positive experience during the trial and the classroom teacher believed their engagement with mathematics had improved as a result. Although there were challenges involved in integrating the iPads into mathematics lessons, some teaching practices were adapted to accommodate the technology. The integration of the iPads highlighted the need for teacher professional development and the importance of developing strong Technological Pedagogical Content Knowledge.

Published
2012

150. Student-Centred Learning: Toolkit for Students, Staff and Higher Education Institutions

Author

European Students' Union (ESU) (Belgium), Attard, Angele, Di Iorio, Emma, Geven, Koen, and Santa, Robert

Abstract

This Toolkit forms part of the project entitled "Time for a New Paradigm in Education: Student-Centred Learning" (T4SCL), jointly led by the European Students' Union (ESU) and Education International (EI). This is an EU-funded project under the Lifelong Learning Programme (LLP) administered by the Education, Audiovisual and Culture Executive Agency (EACEA). T4SCL, as a pioneer initiative, aims to assist policy makers in designing sound student-centred learning (SCL) strategies and approaches and to increase the capacity of student and staff representative organisations to be active partners in spreading a culture of SCL in higher education institutions across Europe. This toolkit represents a key outcome of the project. It follows extensive research and a series of events at both European and national levels, combined with trainings on the subject-matter. This toolkit is designed for "effective, practical implementation of SCL by teaching staff, students and institutional leaders." It aims to show how "practical and achievable SCL" is, as well as being highly beneficial for learners. (Contains 5 figures and a list of 24 sources for further reading.)

Published
2010

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