articles+ search results
75,288 articles+ results
1 - 20
Next
Number of results to display per page
-
Caruntu, Constantin F., Varga, Virgil, and Pauca, Ovidiu
- 2020 21th International Carpathian Control Conference (ICCC) Carpathian Control Conference (ICCC), 2020 21th International. :1-6 Oct, 2020
-
Dris, Younes, Dumbrava, Virgil, Benhabib, Mohamed Choukri, and Mohammed Meliani, Sidi
- 2020 55th International Universities Power Engineering Conference (UPEC) Universities Power Engineering Conference (UPEC), 2020 55th International. :1-6 Sep, 2020
- Full text View on content provider's site
-
Sima, Catalina Alexandra, Popescu, Mihai Octavian, Popescu, Claudia Laurenta, and Dumbrava, Virgil
- 2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe) Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe), 2020 IEEE International Conference on. :1-6 Jun, 2020
- Full text View on content provider's site
-
Lazaroiu, George Cristian, Diana Robescu, Lacramioara, Dumbrava, Virgil, and Roscia, Mariacristina
- 2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe) Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe), 2020 IEEE International Conference on. :1-6 Jun, 2020
- Full text View on content provider's site
-
Botez, Robert, Iurian, Calin-Marian, Ivanciu, Iustin-Alexandru, and Dobrota, Virgil
- 2020 13th International Conference on Communications (COMM) Communications (COMM), 2020 13th International Conference on. :471-476 Jun, 2020
- Full text View on content provider's site
6. Smith, Ellison DuRant [2000]
-
Dean, Virgil W.
- American National Biography Online, 2000.
7. Bristow, Joseph Little [2000]
-
Dean, Virgil W.
- American National Biography Online, 2000.
8. Halderman, John Adams [2000]
-
Dean, Virgil W.
- American National Biography Online, 2000.
9. Wickard, Claude Raymond [2000]
-
Dean, Virgil W.
- American National Biography Online, 2000.
-
Li, Cheng, Ingersoll, Andrew, Bolton, Scott, Levin, Steven, Janssen, Michael, Atreya, Sushil, Lunine, Jonathan, Steffes, Paul, Brown, Shannon, Guillot, Tristan, Allison, Michael, Arballo, John, Bellotti, Amadeo, Adumitroaie, Virgil, Gulkis, Samuel, Hodges, Amoree, Li, Liming, Misra, Sidharth, Orton, Glenn, Oyafuso, Fabiano, Santos-Costa, Daniel, Waite, Hunter, and Zhang, Zhimeng
- Nature Astronomy (2020): 1-8
- Subjects
-
Astrophysics - Earth and Planetary Astrophysics
- Abstract
-
Oxygen is the most common element after hydrogen and helium in Jupiter's atmosphere, and may have been the primary condensable (as water ice) in the protoplanetary disk. Prior to the Juno mission, in situ measurements of Jupiter's water abundance were obtained from the Galileo Probe, which dropped into a meteorologically anomalous site. The findings of the Galileo Probe were inconclusive because the concentration of water was still increasing when the probe died. Here, we initially report on the water abundance in the equatorial region, from 0 to 4 degrees north latitude, based on 1.25 to 22 GHz data from Juno Microwave radiometer probing approximately 0.7 to 30 bars pressure. Because Juno discovered the deep atmosphere to be surprisingly variable as a function of latitude, it remains to confirm whether the equatorial abundance represents Jupiter's global water abundance. The water abundance at the equatorial region is inferred to be $2.5_{-1.6}^{+2.2}\times10^3$ ppm, or $2.7_{-1.7}^{+2.4}$ times the protosolar oxygen elemental ratio to H (1$\sigma$ uncertainties). If reflective of the global water abundance, the result suggests that the planetesimals formed Jupiter are unlikely to be water-rich clathrate hydrates.
Comment: 27 pages, 7 figures
- Full text View this record from Arxiv
-
Voiculescu, Dan-Virgil
- Subjects
-
Mathematics - Functional Analysis, Mathematics - K-Theory and Homology, Mathematics - Operator Algebras, and Primary: 47A55: Secondary: 46L80, 46L87, 47B10
- Abstract
-
We define commutants mod normed ideals associated with compact smooth manifolds with boundary. The results about the K-theory of these operator algebras include an exact sequence for the connected sum of manifolds, derived from the Mayer-Vietoris sequence. We also make a few remarks about bicommutants mod normed ideals and about the quasicentral modulus for the quasinormed p-Schatten-von Neumann classes 0 < p < 1.
Comment: 14 pages
- Full text View this record from Arxiv
-
Dumbrava, Virgil, Lazaroiu, George Cristian, Duquenne, Philippe, and Carlea, Filip
- 2019 International Conference on ENERGY and ENVIRONMENT (CIEM) ENERGY and ENVIRONMENT (CIEM), 2019 International Conference on. :162-166 Oct, 2019
- Full text View on content provider's site
-
Onet, Razvan, Burian, Robert, Campeanu, Cristina-Maria, Ivanciu, Iustin-Alexandru, Zinca, Daniel, and Dobrota, Virgil
- 2019 18th RoEduNet Conference: Networking in Education and Research (RoEduNet) Education and Research (RoEduNet), 2019 18th RoEduNet Conference: Networking in. :1-6 Oct, 2019
- Full text View on content provider's site
-
Balcu, Ionel, Ciucanu, Ionel, Macarie, Corina, Taranu, Bogdan, Ciupageanu, Dana-Alexandra, Lazaroiu, Gheorghe, and Dumbrava, Virgil
- 2019 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe) Innovative Smart Grid Technologies Europe (ISGT-Europe), 2019 IEEE PES. :1-5 Sep, 2019
- Full text View on content provider's site
15. Synchronous Motor Behavior in Harmonics [2019]
-
Beleiu, Horia Gheorghe, Maier, Virgil, Pavel, Sorin Gheorghe, Birou, Iulian, and Pica, Constantin
- 2019 54th International Universities Power Engineering Conference (UPEC) International Universities Power Engineering Conference (UPEC), 2019 54th. :1-6 Sep, 2019
- Full text View on content provider's site
-
Burstein, Roy, Henry, Nathaniel J, Collison, Michael L, Marczak, Laurie B, Sligar, Amber, Watson, Stefanie, Marquez, Neal, Abbasalizad-Farhangi, Mahdieh, Abbasi, Masoumeh, Abd-Allah, Foad, Abdoli, Amir, Abdollahi, Mohammad, Abdollahpour, Ibrahim, Abdulkader, Rizwan Suliankatchi, Abrigo, Michael R M, Acharya, Dilaram, Adebayo, Oladimeji M, Adekanmbi, Victor, Adham, Davoud, Afshari, Mahdi, Aghaali, Mohammad, Ahmadi, Keivan, Ahmadi, Mehdi, Ahmadpour, Ehsan, Ahmed, Rushdia, Akal, Chalachew Genet, Akinyemi, Joshua O, Alahdab, Fares, Alam, Noore, Alamene, Genet Melak, Alene, Kefyalew Addis, Alijanzadeh, Mehran, Alinia, Cyrus, Alipour, Vahid, Aljunid, Syed Mohamed, Almalki, Mohammed J, Al-Mekhlafi, Hesham M, Altirkawi, Khalid, Alvis-Guzman, Nelson, Amegah, Adeladza Kofi, Amini, Saeed, Amit, Arianna Maever Loreche, Anbari, Zohreh, Androudi, Sofia, Anjomshoa, Mina, Ansari, Fereshteh, Antonio, Carl Abelardo T, Arabloo, Jalal, Arefi, Zohreh, Aremu, Olatunde, Armoon, Bahram, Arora, Amit, Artaman, Al, Asadi, Anvar, Asadi-Aliabadi, Mehran, Ashraf-Ganjouei, Amir, Assadi, Reza, Ataeinia, Bahar, Atre, Sachin R, Quintanilla, Beatriz Paulina Ayala, Ayanore, Martin Amogre, Azari, Samad, Babaee, Ebrahim, Babazadeh, Arefeh, Badawi, Alaa, Bagheri, Soghra, Bagherzadeh, Mojtaba, Baheiraei, Nafiseh, Balouchi, Abbas, Barac, Aleksandra, Bassat, Quique, Baune, Bernhard T, Bayati, Mohsen, Bedi, Neeraj, Beghi, Ettore, Behzadifar, Masoud, Behzadifar, Meysam, Belay, Yared Belete, Bell, Brent, Bell, Michelle L, Berbada, Dessalegn Ajema, Bernstein, Robert S, Bhattacharjee, Natalia V, Bhattarai, Suraj, Bhutta, Zulfiqar A, Bijani, Ali, Bohlouli, Somayeh, Breitborde, Nicholas J K, Britton, Gabrielle, Browne, Annie J, Nagaraja, Sharath Burugina, Busse, Reinhard, Butt, Zahid A, Car, Josip, Cárdenas, Rosario, Castañeda-Orjuela, Carlos A, Cerin, Ester, Chanie, Wagaye Fentahun, Chatterjee, Pranab, Chu, Dinh-Toi, Cooper, Cyrus, Costa, Vera M, Dalal, Koustuv, Dandona, Lalit, Dandona, Rakhi, Daoud, Farah, Daryani, Ahmad, Das Gupta, Rajat, Davis, Ian, Davis Weaver, Nicole, Davitoiu, Dragos Virgil, De Neve, Jan-Walter, Demeke, Feleke Mekonnen, Demoz, Gebre Teklemariam, Deribe, Kebede, Desai, Rupak, Deshpande, Aniruddha, Desyibelew, Hanna Demelash, Dey, Sagnik, Dharmaratne, Samath Dhamminda, Dhimal, Meghnath, Diaz, Daniel, Doshmangir, Leila, Duraes, Andre R, Dwyer-Lindgren, Laura, Earl, Lucas, Ebrahimi, Roya, Ebrahimpour, Soheil, Effiong, Andem, Eftekhari, Aziz, Ehsani-Chimeh, Elham, El Sayed, Iman, El Sayed Zaki, Maysaa, El Tantawi, Maha, El-Khatib, Ziad, Emamian, Mohammad Hassan, Enany, Shymaa, Eskandarieh, Sharareh, Eyawo, Oghenowede, Ezalarab, Maha, Faramarzi, Mahbobeh, Fareed, Mohammad, Faridnia, Roghiyeh, Faro, Andre, Fazaeli, Ali Akbar, Fazlzadeh, Mehdi, Fentahun, Netsanet, Fereshtehnejad, Seyed-Mohammad, Fernandes, João C, Filip, Irina, Fischer, Florian, Foigt, Nataliya A, Foroutan, Masoud, Francis, Joel Msafiri, Fukumoto, Takeshi, Fullman, Nancy, Gallus, Silvano, Gebre, Destallem Gebremedhin, Gebrehiwot, Tsegaye Tewelde, Gebremeskel, Gebreamlak Gebremedhn, Gessner, Bradford D, Geta, Birhanu, Gething, Peter W, Ghadimi, Reza, Ghadiri, Keyghobad, Ghajarzadeh, Mahsa, Ghashghaee, Ahmad, Gill, Paramjit Singh, Gill, Tiffany K, Golding, Nick, Gomes, Nelson G M, Gona, Philimon N, Gopalani, Sameer Vali, Gorini, Giuseppe, Goulart, Bárbara Niegia Garcia, Graetz, Nicholas, Greaves, Felix, Green, Manfred S, Guo, Yuming, Haj-Mirzaian, Arvin, Haj-Mirzaian, Arya, Hall, Brian James, Hamidi, Samer, Haririan, Hamidreza, Haro, Josep Maria, Hasankhani, Milad, Hasanpoor, Edris, Hasanzadeh, Amir, Hassankhani, Hadi, Hassen, Hamid Yimam, Hegazy, Mohamed I, Hendrie, Delia, Heydarpour, Fatemeh, Hird, Thomas R, Hoang, Chi Linh, Hollerich, Gillian, Rad, Enayatollah Homaie, Hoseini-Ghahfarokhi, Mojtaba, Hossain, Naznin, Hosseini, Mostafa, Hosseinzadeh, Mehdi, Hostiuc, Mihaela, Hostiuc, Sorin, Househ, Mowafa, Hsairi, Mohamed, Ilesanmi, Olayinka Stephen, Imani-Nasab, Mohammad Hasan, Iqbal, Usman, Irvani, Seyed Sina Naghibi, Islam, Nazrul, Islam, Sheikh Mohammed Shariful, Jürisson, Mikk, Balalami, Nader Jafari, Jalali, Amir, Javidnia, Javad, Jayatilleke, Achala Upendra, Jenabi, Ensiyeh, Ji, John S, Jobanputra, Yash B, Johnson, Kimberly, Jonas, Jost B, Shushtari, Zahra Jorjoran, Jozwiak, Jacek Jerzy, Kabir, Ali, Kahsay, Amaha, Kalani, Hamed, Kalhor, Rohollah, Karami, Manoochehr, Karki, Surendra, Kasaeian, Amir, Kassebaum, Nicholas J, Keiyoro, Peter Njenga, Kemp, Grant Rodgers, Khabiri, Roghayeh, Khader, Yousef Saleh, Khafaie, Morteza Abdullatif, Khan, Ejaz Ahmad, Khan, Junaid, Khan, Muhammad Shahzeb, Khang, Young-Ho, Khatab, Khaled, Khater, Amir, Khater, Mona M, Khatony, Alireza, Khazaei, Mohammad, Khazaei, Salman, Khazaei-Pool, Maryam, Khubchandani, Jagdish, Kianipour, Neda, Kim, Yun Jin, Kimokoti, Ruth W, Kinyoki, Damaris K, Kisa, Adnan, Kisa, Sezer, Kolola, Tufa, Kosen, Soewarta, Koul, Parvaiz A, Koyanagi, Ai, Kraemer, Moritz U G, Krishan, Kewal, Krohn, Kris J, Kugbey, Nuworza, Kumar, G Anil, Kumar, Manasi, Kumar, Pushpendra, Kuupiel, Desmond, Lacey, Ben, Lad, Sheetal D, Lami, Faris Hasan, Larsson, Anders O., Lee, Paul H, Leili, Mostafa, Levine, Aubrey J, Li, Shanshan, Lim, Lee-Ling, Listl, Stefan, Longbottom, Joshua, Lopez, Jaifred Christian F, Lorkowski, Stefan, Magdeldin, Sameh, Abd El Razek, Hassan Magdy, Abd El Razek, Muhammed Magdy, Majeed, Azeem, Maleki, Afshin, Malekzadeh, Reza, Malta, Deborah Carvalho, Mamun, Abdullah A, Manafi, Navid, Manda, Ana-Laura, Mansourian, Morteza, Martins-Melo, Francisco Rogerlândio, Masaka, Anthony, Massenburg, Benjamin Ballard, Maulik, Pallab K, Mayala, Benjamin K, Mazidi, Mohsen, McKee, Martin, Mehrotra, Ravi, Mehta, Kala M, Meles, Gebrekiros Gebremichael, Mendoza, Walter, Menezes, Ritesh G, Meretoja, Atte, Meretoja, Tuomo J, Mestrovic, Tomislav, Miller, Ted R, Miller-Petrie, Molly K, Mills, Edward J, Milne, George J, Mini, G K, Mir, Seyed Mostafa, Mirjalali, Hamed, Mirrakhimov, Erkin M, Mohamadi, Efat, Mohammad, Dara K, Darwesh, Aso Mohammad, Mezerji, Naser Mohammad Gholi, Mohammed, Ammas Siraj, Mohammed, Shafiu, Mokdad, Ali H, Molokhia, Mariam, Monasta, Lorenzo, Moodley, Yoshan, Moosazadeh, Mahmood, Moradi, Ghobad, Moradi, Masoud, Moradi, Yousef, Moradi-Lakeh, Maziar, Moradinazar, Mehdi, Moraga, Paula, Morawska, Lidia, Mosapour, Abbas, Mousavi, Seyyed Meysam, Mueller, Ulrich Otto, Muluneh, Atalay Goshu, Mustafa, Ghulam, Nabavizadeh, Behnam, Naderi, Mehdi, Nagarajan, Ahamarshan Jayaraman, Nahvijou, Azin, Najafi, Farid, Nangia, Vinay, Ndwandwe, Duduzile Edith, Neamati, Nahid, Negoi, Ionut, Negoi, Ruxandra Irina, Ngunjiri, Josephine W, Thi Nguyen, Huong Lan, Nguyen, Long Hoang, Nguyen, Son Hoang, Nielsen, Katie R, Ningrum, Dina Nur Anggraini, Nirayo, Yirga Legesse, Nixon, Molly R, Nnaji, Chukwudi A, Nojomi, Marzieh, Noroozi, Mehdi, Nosratnejad, Shirin, Noubiap, Jean Jacques, Motlagh, Soraya Nouraei, Ofori-Asenso, Richard, Ogbo, Felix Akpojene, Oladimeji, Kelechi E, Olagunju, Andrew T, Olfatifar, Meysam, Olum, Solomon, Olusanya, Bolajoko Olubukunola, Oluwasanu, Mojisola Morenike, Onwujekwe, Obinna E, Oren, Eyal, Ortega-Altamirano, Doris D V, Ortiz, Alberto, Osarenotor, Osayomwanbo, Osei, Frank B, Osgood-Zimmerman, Aaron E, Otstavnov, Stanislav S, Owolabi, Mayowa Ojo, P A, Mahesh, Pagheh, Abdol Sattar, Pakhale, Smita, Panda-Jonas, Songhomitra, Pandey, Animika, Park, Eun-Kee, Parsian, Hadi, Pashaei, Tahereh, Patel, Sangram Kishor, Pepito, Veincent Christian Filipino, Pereira, Alexandre, Perkins, Samantha, Pickering, Brandon V, Pilgrim, Thomas, Pirestani, Majid, Piroozi, Bakhtiar, Pirsaheb, Meghdad, Plana-Ripoll, Oleguer, Pourjafar, Hadi, Puri, Parul, Qorbani, Mostafa, Quintana, Hedley, Rabiee, Mohammad, Rabiee, Navid, Radfar, Amir, Rafiei, Alireza, Rahim, Fakher, Rahimi, Zohreh, Rahimi-Movaghar, Vafa, Rahimzadeh, Shadi, Rajati, Fatemeh, Raju, Sree Bhushan, Ramezankhani, Azra, Ranabhat, Chhabi Lal, Rasella, Davide, Rashedi, Vahid, Rawal, Lal, Reiner, Robert C, Jr, Renzaho, Andre M N, Rezaei, Satar, Rezapour, Aziz, Riahi, Seyed Mohammad, Ribeiro, Ana Isabel, Roever, Leonardo, Roro, Elias Merdassa, Roser, Max, Roshandel, Gholamreza, Roshani, Daem, Rostami, Ali, Rubagotti, Enrico, Rubino, Salvatore, Sabour, Siamak, Sadat, Nafis, Sadeghi, Ehsan, Saeedi, Reza, Safari, Yahya, Safari-Faramani, Roya, Safdarian, Mahdi, Sahebkar, Amirhossein, Salahshoor, Mohammad Reza, Salam, Nasir, Salamati, Payman, Salehi, Farkhonde, Zahabi, Saleh Salehi, Salimi, Yahya, Salimzadeh, Hamideh, Salomon, Joshua A, Sambala, Evanson Zondani, Samy, Abdallah M, Santric Milicevic, Milena M, Jose, Bruno Piassi Sao, Saraswathy, Sivan Yegnanarayana Iyer, Sarmiento-Suárez, Rodrigo, Sartorius, Benn, Sathian, Brijesh, Saxena, Sonia, Sbarra, Alyssa N, Schaeffer, Lauren E, Schwebel, David C, Sepanlou, Sadaf G, Seyedmousavi, Seyedmojtaba, Shaahmadi, Faramarz, Shaikh, Masood Ali, Shams-Beyranvand, Mehran, Shamshirian, Amir, Shamsizadeh, Morteza, Sharafi, Kiomars, Sharif, Mehdi, Sharif-Alhoseini, Mahdi, Sharifi, Hamid, Sharma, Jayendra, Sharma, Rajesh, Sheikh, Aziz, Shields, Chloe, Shigematsu, Mika, Shiri, Rahman, Shiue, Ivy, Shuval, Kerem, Siddiqi, Tariq J, Silva, João Pedro, Singh, Jasvinder A, Sinha, Dhirendra Narain, Sisay, Malede Mequanent, Sisay, Solomon, Sliwa, Karen, Smith, David L, Somayaji, Ranjani, Soofi, Moslem, Soriano, Joan B, Sreeramareddy, Chandrashekhar T, Sudaryanto, Agus, Sufiyan, Mu'awiyyah Babale, Sykes, Bryan L, Sylaja, P N, Tabarés-Seisdedos, Rafael, Tabb, Karen M, Tabuchi, Takahiro, Taveira, Nuno, Temsah, Mohamad-Hani, Terkawi, Abdullah Sulieman, Tessema, Zemenu Tadesse, Thankappan, Kavumpurathu Raman, Thirunavukkarasu, Sathish, To, Quyen G, Tovani-Palone, Marcos Roberto, Tran, Bach Xuan, Tran, Khanh Bao, Ullah, Irfan, Usman, Muhammad Shariq, Uthman, Olalekan A, Vahedian-Azimi, Amir, Valdez, Pascual R, van Boven, Job F M, Vasankari, Tommi Juhani, Vasseghian, Yasser, Veisani, Yousef, Venketasubramanian, Narayanaswamy, Violante, Francesco S, Vladimirov, Sergey Konstantinovitch, Vlassov, Vasily, Vos, Theo, Vu, Giang Thu, Vujcic, Isidora S, Waheed, Yasir, Wakefield, Jon, Wang, Haidong, Wang, Yafeng, Wang, Yuan-Pang, Ward, Joseph L, Weintraub, Robert G, Weldegwergs, Kidu Gidey, Weldesamuel, Girmay Teklay, Westerman, Ronny, Wiysonge, Charles Shey, Wondafrash, Dawit Zewdu, Woyczynski, Lauren, Wu, Ai-Min, Xu, Gelin, Yadegar, Abbas, Yamada, Tomohide, Yazdi-Feyzabadi, Vahid, Yilgwan, Christopher Sabo, Yip, Paul, Yonemoto, Naohiro, Lebni, Javad Yoosefi, Younis, Mustafa Z, Yousefifard, Mahmoud, Yousof, Hebat-Allah Salah A, Yu, Chuanhua, Yusefzadeh, Hasan, Zabeh, Erfan, Moghadam, Telma Zahirian, Bin Zaman, Sojib, Zamani, Mohammad, Zandian, Hamed, Zangeneh, Alireza, Zerfu, Taddese Alemu, Zhang, Yunquan, Ziapour, Arash, Zodpey, Sanjay, Murray, Christopher J L, Hay, Simon I, and Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk kemi
- Nature. 574(7778):353-358
- Subjects
-
Medical and Health Sciences, Clinical Medicine, Pediatrics, Medicin och hälsovetenskap, Klinisk medicin, and Pediatrik
- Abstract
-
Since 2000, many countries have achieved considerable success in improving child survival, but localized progress remains unclear. To inform efforts towards United Nations Sustainable Development Goal 3.2-to end preventable child deaths by 2030-we need consistently estimated data at the subnational level regarding child mortality rates and trends. Here we quantified, for the period 2000-2017, the subnational variation in mortality rates and number of deaths of neonates, infants and children under 5 years of age within 99 low- and middle-income countries using a geostatistical survival model. We estimated that 32% of children under 5 in these countries lived in districts that had attained rates of 25 or fewer child deaths per 1,000 live births by 2017, and that 58% of child deaths between 2000 and 2017 in these countries could have been averted in the absence of geographical inequality. This study enables the identification of high-mortality clusters, patterns of progress and geographical inequalities to inform appropriate investments and implementations that will help to improve the health of all populations.
- Full text View on content provider's site
-
Comas-Bru, Laia, Harrison, Sandy P., Werner, Martin, Rehfeld, Kira, Scroxton, Nick, Veiga-Pires, Cristina, Ahmad, Syed Masood, Brahim, Yassine Ait, Mozhdehi, Sahar Amirnezhad, Arienzo, Monica, Atsawawaranunt, Kamolphat, Baker, Andy, Braun, Kerstin, Breitenbach, Sebastian, Burstyn, Yuval, Chawchai, Sakonvan, Columbu, Andrea, Deininger, Michael, Demeny, Attila, Dixon, Bronwyn, Hatvani, Istvan Gabor, Hu, Jun, Kaushal, Nikita, Kern, Zoltan, Labuhn, Inga, Lachniet, Matthew S., Lechleitner, Franziska A., Lorrey, Andrew, Markowska, Monika, Nehme, Carole, Novello, Valdir F., Oster, Jessica, Perez-Mejias, Carlos, Pickering, Robyn, Sekhon, Natasha, Wang, Xianfeng, Warken, Sophie, Atkinson, Tim, Ayalon, Avner, Baldini, James, Bar-Matthews, Miryam, Bernal, Juan Pablo, Boch, Ronny, Borsato, Andrea, Boyd, Meighan, Brierley, Chris, Cai, Yanjun, Carolin, Stacy, Cheng, Hai, Constantin, Silviu, Couchoud, Isabelle, Cruz, Francisco, Denniston, Rhawn, Dragusin, Virgil, Duan, Wuhui, Ersek, Vasile, Finné, Martin, Fleitmann, Dominik, Fohlmeister, Jens, Frappier, Amy, Genty, Dominique, Holzkamper, Steffen, Hopley, Philip, Johnston, Vanessa, Kathayat, Gayatri, Keenan-Jones, Duncan, Koltai, Gabriella, Li, Ting-Yong, Lone, Mahjoor Ahmad, Luetscher, Marc, Mattey, Dave, Moreno, Ana, Moseley, Gina, Psomiadis, David, Ruan, Jiaoyang, Scholz, Denis, Sha, Lijuan, Smith, Andrew Christopher, Strikis, Nicolas, Treble, Pauline, Unal-Imer, Ezgi, Vaks, Anton, Vansteenberge, Stef, Voarintsoa, Ny Riavo G., Wong, Corinne, Wortham, Barbara, Wurtzel, Jennifer, Zhang, Haiwei, and Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Historisk-filosofiska fakulteten, Institutionen för arkeologi och antik historia, Antikens kultur och samhällsliv
- Climate of the Past. 15(4):1557-1579
- Subjects
-
Natural Sciences, Earth and Related Environmental Sciences, Climate Research, Naturvetenskap, Geovetenskap och miljövetenskap, and Klimatforskning
- Abstract
-
Although quantitative isotope data from speleothems has been used to evaluate isotope-enabled model simulations, currently no consensus exists regarding the most appropriate methodology through which to achieve this. A number of modelling groups will be running isotope-enabled palaeoclimate simulations in the framework of the Coupled Model Intercomparison Project Phase 6, so it is timely to evaluate different approaches to using the speleothem data for data-model comparisons. Here, we illustrate this using 456 globally distributed speleothem delta O-18 records from an updated version of the Speleothem Isotopes Synthesis and Analysis (SISAL) database and palaeoclimate simulations generated using the ECHAM5-wiso isotope-enabled atmospheric circulation model. We show that the SISAL records reproduce the first-order spatial patterns of isotopic variability in the modern day, strongly supporting the application of this dataset for evaluating model-derived isotope variability into the past. However, the discontinuous nature of many speleothem records complicates the process of procuring large numbers of records if data-model comparisons are made using the traditional approach of comparing anomalies between a control period and a given palaeoclimate experiment. To circumvent this issue, we illustrate techniques through which the absolute isotope values during any time period could be used for model evaluation. Specifically, we show that speleothem isotope records allow an assessment of a model's ability to simulate spatial isotopic trends. Our analyses provide a protocol for using speleothem isotope data for model evaluation, including screening the observations to take into account the impact of speleothem mineralogy on delta O-18 values, the optimum period for the modern observational baseline and the selection of an appropriate time window for creating means of the isotope data for palaeo-time-slices.
- Full text View on content provider's site
-
Voiculescu, Dan-Virgil
- Subjects
-
Mathematics - Functional Analysis and 47A55 (Primary) 28A78, 28A80, 47B10 (Secondary)
- Abstract
-
We prove a general ampliation homogeneity result for the quasicentral modulus of an n-tuple of operators with respect to the (p,1) Lorentz normed ideal. We use this to prove a formula involving Hausdorff measure for the quasicentral modulus of n-tuples of commuting Hermitian operators the spectrum of which is contained in certain Cantor-like self-similar fractals.
Comment: 13 pages
- Full text View this record from Arxiv
19. The darkweb: a social network anomaly [2020]
-
O'Keeffe, Kevin P., Griffith, Virgil, Xu, Yang, Santi, Paolo, and Ratti, Carlo
- Subjects
-
Physics - Physics and Society and Nonlinear Sciences - Adaptation and Self-Organizing Systems
- Abstract
-
We analyse the darkweb and find its structure is unusual. For example, $ \sim 87 \%$ of darkweb sites \emph{never} link to another site. To call the darkweb a "web" is thus a misnomer -- it's better described as a set of largely isolated dark silos. As we show through a detailed comparison to the World Wide Web (www), this siloed structure is highly dissimilar to other social networks and indicates the social behavior of darkweb users is much different to that of www users. We show a generalized preferential attachment model can partially explain the strange topology of the darkweb, but an understanding of the anomalous behavior of its users remains out of reach. Our results are relevant to network scientists, social scientists, and other researchers interested in the social interactions of large numbers of agents.
Comment: arXiv admin note: substantial text overlap with arXiv:1704.07525
- Full text View this record from Arxiv
-
Qin, Kechen, Wang, Yu, Li, Cheng, Gunaratna, Kalpa, Jin, Hongxia, Pavlu, Virgil, and Aslam, Javed A.
- Subjects
-
Computer Science - Machine Learning and Statistics - Machine Learning
- Abstract
-
Multi-hop knowledge based question answering (KBQA) is a complex task for natural language understanding. Many KBQA approaches have been proposed in recent years, and most of them are trained based on labeled reasoning path. This hinders the system's performance as many correct reasoning paths are not labeled as ground truth, and thus they cannot be learned. In this paper, we introduce an end-to-end KBQA system which can leverage multiple reasoning paths' information and only requires labeled answer as supervision. We conduct experiments on several benchmark datasets containing both single-hop simple questions as well as muti-hop complex questions, including WebQuestionSP (WQSP), ComplexWebQuestion-1.1 (CWQ), and PathQuestion-Large (PQL), and demonstrate strong performance.
- Full text View this record from Arxiv
Catalog
Books, media, physical & digital resources
Guides
Course- and topic-based guides to collections, tools, and services.
1 - 20
Next
