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1,816 results on '"Takahashi, Yuki"'

1. Clear Reduction in Spin Susceptibility and Superconducting Spin Rotation for $H \parallel a$ in the Early-Stage Sample of Spin-Triplet Superconductor UTe$_2$

Author

Kitagawa, Shunsaku, Nakanishi, Kousuke, Matsumura, Hiroki, Takahashi, Yuki, Ishida, Kenji, Tokunaga, Yo, Sakai, Hironori, Kambe, Shinsaku, Nakamura, Ai, Shimizu, Yusei, Homma, Yoshiya, Li, Dexin, Honda, Fuminori, Miyake, Atsushi, and Aoki, Dai

Subjects
Condensed Matter - Superconductivity, Condensed Matter - Strongly Correlated Electrons
Abstract

We report the re-measurement of the $a$-axis spin susceptibility component in an early-stage sample of the spin-triplet superconductor UTe$_2$ with the transition temperature of $T_{\rm SC}$ = 1.6 K. Using Knight-shift measurements along the $b$ axis and at a 10-degree tilt from the $b$ axis towards the $a$ axis, we accurately determined the $a$-axis component without directly measuring the $a$-axis Knight shift. Our results reveal a decrease of approximately 3\% in the $a$-axis spin susceptibility in the superconducting state under $a$-axis magnetic field $\mu_0 H_a \sim 0.1$ T, indicating that the spin susceptibility decreases similarly in both early-stage and ultraclean samples with $T_{\rm SC}$ = 2.1 K. The previously reported absence of the reduction in Knight shift is attributed to the missing of signal from the superconducting region and to the detection of residual signals from the non-superconducting region instead. We also found that the decrease in the $a$-axis spin susceptibility is immediately suppressed with increasing the $a$-axis magnetic field and is estimated to be completely suppressed at around 1.5 T due to superconducting spin rotation., Comment: 5 pages, 3 figures

Published
2024
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4. Correction: Antenatal steroids elicited neurodegenerative-associated transcriptional changes in the hippocampus of preterm fetal sheep independent of lung maturation

Author

Carter, Sean W. D., Fee, Erin L., Usuda, Haruo, Oguz, Gokce, Ramasamy, Adaikalavan, Amin, Zubair, Agnihotri, Biswas, Wei, Qin, Xiawen, Liu, Takahashi, Tsukasa, Takahashi, Yuki, Ikeda, Hideyuki, Kumagai, Yusaku, Saito, Yuya, Saito, Masatoshi, Mattar, Citra, Evans, Mark I., Illanes, Sebastián E., Jobe, Alan H., Choolani, Mahesh, and Kemp, Matthew W.

Published
2024
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6. Antenatal steroids elicited neurodegenerative-associated transcriptional changes in the hippocampus of preterm fetal sheep independent of lung maturation

Author

Carter, Sean W. D., Fee, Erin L., Usuda, Haruo, Oguz, Gokce, Ramasamy, Adaikalavan, Amin, Zubair, Agnihotri, Biswas, Wei, Qin, Xiawen, Liu, Takahashi, Tsukasa, Takahashi, Yuki, Ikeda, Hideyuki, Kumagai, Yusaku, Saito, Yuya, Saito, Masatoshi, Mattar, Citra, Evans, Mark I., Illanes, Sebastián E., Jobe, Alan H., Choolani, Mahesh, and Kemp, Matthew W.

Published
2024
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9. Exiting measures for random walks on infinite rooted trees

Author

Takahashi Yuki

Subjects
iterated function systems, random walks, dimensions, 28dxx, 37hxx, Mathematics, QA1-939
Abstract

We consider conformal iterated function systems (CIFS) that are induced by an infinite rooted tree TT, which we call TT-conformal iterated function systems (TT-CIFS). We focus on the parameterized families of TT-CIFS that satisfy the trasversality condition and give a dimension formula for the exiting measure for a.e. parameter. We also give a sufficient condition that the exiting measure is absolutely continuous for a.e. parameter.

Published
2024
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10. Quantitative Transversal Theorems in the Plane

Author

Axelrod-Freed, Ilani, Carvalho, João Pedro, and Takahashi, Yuki

Subjects
Mathematics - Combinatorics, 52C30 (Primary) 52C35 (Secondary)
Abstract

Hadwiger's theorem is a variant of Helly-type theorems involving common transversals to families of convex sets instead of common intersections. In this paper, we obtain a quantitative version of Hadwiger's theorem on the plane: given an ordered family of pairwise disjoint and compact convex sets in $\mathbb{R}^2$ and any real-valued monotone function on convex subsets of $\mathbb{R}^2,$ if every three sets have a common transversal, respecting the order, such that the intersection of the sets with each half-plane defined by the transversal are valued at least (or at most) some constant $\alpha,$ then the entire family has a common transversal with the same property. Unlike previous generalizations of Hadwiger's theorem, we prove that disjointness is necessary for the quantitative case. We also prove colorful versions of our results.

Published
2023

11. Unveiling the orbital-selective electronic band reconstruction through the structural phase transition in TaTe$_2$

Author

Mitsuishi, Natsuki, Sugita, Yusuke, Akiba, Tomoki, Takahashi, Yuki, Sakano, Masato, Horiba, Koji, Kumigashira, Hiroshi, Takahashi, Hidefumi, Ishiwata, Shintaro, Motome, Yukitoshi, and Ishizaka, Kyoko

Subjects
Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Materials Science
Abstract

Tantalum ditelluride TaTe$_2$ belongs to the family of layered transition metal dichalcogenides but exhibits a unique structural phase transition at around 170 K that accompanies the rearrangement of the Ta atomic network from a "ribbon chain" to a "butterfly-like" pattern. While multiple mechanisms including Fermi surface nesting and chemical bonding instabilities have been intensively discussed, the origin of this transition remains elusive. Here we investigate the electronic structure of single-crystalline TaTe$_2$ with a particular focus on its modifications through the phase transition, by employing core-level and angle-resolved photoemission spectroscopy combined with first-principles calculations. Temperature-dependent core-level spectroscopy demonstrates a splitting of the Ta $4f$ core-level spectra through the phase transition indicative of the Ta-dominated electronic state reconstruction. Low-energy electronic state measurements further reveal an unusual kink-like band reconstruction occurring at the Brillouin zone boundary, which cannot be explained by Fermi surface nesting or band folding effects. On the basis of the orbital-projected band calculations, this band reconstruction is mainly attributed to the modifications of specific Ta $5d$ states, namely the $d_{XY}$ orbitals (the ones elongating along the ribbon chains) at the center Ta sites of the ribbon chains. The present results highlight the strong orbital-dependent electronic state reconstruction through the phase transition in this system and provide fundamental insights towards understanding complex electron-lattice-bond coupled phenomena., Comment: The final version is available in Phys. Rev. Res. (Open Acess)

Published
2023
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18. Frobenius templates in certain $2 \times 2$ matrix rings

Author

Eller, Timothy, Kraus, Jakub, Takahashi, Yuki, and Zhang, Zhichun Joy

Subjects
Mathematics - Number Theory
Abstract

The classical Frobenius problem is to find the largest integer that cannot be written as a linear combination of a given set of positive, coprime integers using nonnegative integer coefficients. Prior work has generalized the classical Frobenius problem from integers to Frobenius problems in other rings. This paper explores Frobenius problems in various rings of (upper) triangular $2 \times 2$ matrices with constant diagonal.

Published
2021

19. Graphs with prescribed radius, diameter, and center

Author

Guest, Kelly, Johnson, Andrew, Johnson, Peter, Jones, William, Takahashi, Yuki, and Zhang, Zhichun Joy

Subjects
Mathematics - Combinatorics
Abstract

Among other things, it is shown that for every pair of positive integers $r$, $d$, satisfying $1

Published
2021

20. Lifting methods in mass partition problems

Author

Soberón, Pablo and Takahashi, Yuki

Subjects
Mathematics - Combinatorics
Abstract

Many results in mass partitions are proved by lifting $\mathbb{R}^d$ to a higher-dimensional space and dividing the higher-dimensional space into pieces. We extend such methods to use lifting arguments to polyhedral surfaces. Among other results, we prove the existence of equipartitions of $d+1$ measures in $\mathbb{R}^d$ by parallel hyperplanes and of $d+2$ measures in $\mathbb{R}^d$ by concentric spheres. For measures whose supports are sufficiently well separated, we prove results where one can cut a fixed (possibly different) fraction of each measure either by parallel hyperplanes, concentric spheres, convex polyhedral surfaces of few facets, or convex polytopes with few vertices., Comment: 16 pages, 3 figures

Published
2021

21. Gender Differences in the Cost of Corrections in Group Work

Author

Takahashi, Yuki

Subjects
Economics - General Economics
Abstract

Corrections among colleagues are an integral part of group work, but people may take corrections as personal criticism, especially corrections by women. I study whether people dislike collaborating with someone who corrects them and more so when that person is a woman. People, including those with high productivity, are less willing to collaborate with a person who has corrected them even if the correction improves group performance. Yet, people respond to corrections by women as negatively as by men. These findings suggest that although women do not face a higher hurdle, correcting colleagues is costly and reduces group efficiency., Comment: This draft is still preliminary; future versions can differ substantially from this version

Published
2021

25. Variation in Sedative and Analgesic Use During the COVID-19 Pandemic and Associated Outcomes

Author

Mesland, Jean-Baptiste, Henin, Pierre, Petre, Hélène, Buelens, Isabelle, Gerard, Anne-Catherine, Markotić, Dragana, Bošnjak, Ivana, Garza, Ruben, Chu, Eric, Chan, Victoria, Gavidia, Oscar Y., Pachon, Felipe, El Kassas, Mohamed, Tawheed, Ahmed, Matsuda, Wataru, Itagaki, Yuki, Kodate, Akira, Suzuki, Reina, Takahashi, Yuki, Moriki, Koyo, Amer, Marwa Ridha, Bawazeer, Mohammed Abdullah, Dahhan, Talal I., Kseibi, Eiad, Butt, Abid Shahzad, Khurshid, Syed Moazzum, Rabee, Muath, Abujazar, Mohammed, Alghunaim, Razan, Abualkhair, Maal, AlFirm, Abeer Turki, Almazyad, Mohammed A., Alarifi, Mohammed I., Macarambon, Jara M., Bukhari, Ahmad Abdullah, Albahrani, Hussain A., Asfina, Kazi N., Aldossary, Kaltham M., Bojicic, Jovana, Kovacevic, Bojan, Predrag, Stevanovic, Stojakov, Dejan S., Ignjatovic, Duska K., Bojic, Suzana C., Bobos, Marina M., Nenadic, Irina B., Zaric, Milica S., Djuric, Marko D., Djukic, Vladimir R., Teruel, Santiago Y., Martin, Belen C., Kharbanda, Anmol, Jhajhria, Sunil, Fyffe, Zachary, Capizzi, Stephen, Alicie, Bethany, Green, Martha, Crockarell, Lori, Drennan, Amelia, Dubuque, Kathleen, Fambrough, Tonya, Gasaway, Nikole, Krantz, Briana, Nebi, Peiman, Orga, Jan, Serfass, Margaret, Simion, Alina, Warren, Kimberly, Wheeler, Cassie, Woolman, C.J., Christie, Amy B., Ashley, Dennis W., Adiga, Rajani, Newsome, Andrea Sikora, Forehand, Christy C., Bruning, Rebecca, Jones, Timothy W., Walkey, Allan J., Waikar, Sushrut S., Garcia, Michael A., Colona, Mia, Kibbelaar, Zoe, Leong, Michael, Wallman, Daniel, Soni, Kanupriya, Maccarone, Jennifer, Gilman, Joshua, Devis, Ycar, Chung, Joseph, Paracha, Munizay, Lumelsky, David N., DiLorenzo, Madeline, Abdurrahman, Najla, Johnson, Shelsey, Tirupathi, Raghavendra, Tang, Alymer, Safi, Arshad, Green, Cindy, Newell, Jackie, Ramani, Naga, Ganti, Bhavani Harika, Daugherty, Steven K., Atkinson, Sam, Shrimpton, Kelly, Smalls, Norma, Reilkoff, Ronald A., Heneghan, Julia A., Eichen, Sarah, Goertzen, Lexie, Rajala, Scott, Feussom, Ghislaine, Tang, Ben, Cartin-Ceba, Rodrigo, Sen, Ayan, Talaei, Fahimeh, Kashyap, Rahul, Domecq, Juan Pablo, Gajic, Ognjen, Bansal, Vikas, Tekin, Aysun, Lal, Amos, O'Horo, John C., Deo, Neha N., Sharma, Mayank, Qamar, Shahraz, Singh, Romil, Valencia Morales, Diana J., Sharma, Nikhil, Khan, Syed Anjum, Jain, Nitesh Kumar, Koritala, Thoyaja, Khedr, Anwar M., Mushtaq, Hisham A., Jama, Abbas B., Venkata, Chakradhar, Engemann, Miriam, Mantese, Annamarie, Aulakh, Bhagat S., Tripathi, Sandeep, Bandy, Jennifer A., Kreps, Lisa M., Bollinger, Dawn R., Stienecker, Roger Scott, Melendez, Andre G., Brunner, Tressa A., Budzon, Sue M., Heffernan, Jessica L., Souder, Janelle M., Miller, Tracy L., Maisonneuve, Andrea G., Vilella, Antonia L., Kutner, Sara B., Clark, Kacie, Moore, Danielle, Zaren, Howard A., Smith, Stephanie J., Lewis, Grant C., Seames, Lauren, Farlow, Cheryl, Miller, Judy, Broadstreet, Gloria, Martinez, Anthony, Allison, Micheal, Mittal, Aniket, Ruiz, Rafael, Skaanland, Aleta, Ross, Robert, Bernstein, Michael A., Goff, Ian K., Naftilan, Matthew, Mathew, Amal, Williams, Deborah, Murdock, Sue, Ducey, Maryanne, Nelson, Kerianne, Gupta, Neha, Jones, Tracy L., Ayers, Shonda C., Harrell, Amy B., Brown, Brent R., Malone, Kassidy, Sinko, Lauren A., Settle, Lisa M., Sears, Taylor J., McGonagill, Patrick W., Galet, Colette, Hubbard, Janice, Wang, David, Allan, Lauren, Badheka, Aditya, Chegondi, Madhuradhar, Stapleton, Renee D., Dixon, Anne E., Johnson, Olivia, Ardren, Sara S., Burns, Stephanie, Raymond, Anna, Gonyaw, Erika, Hodgdon, Kevin, Housenger, Chloe, Lin, Benjamin, McQuesten, Karen, Pecott-Grimm, Heidi, Sweet, Julie, Ventrone, Sebastian, Khanna, Ashish K., Harris, Lynnette, Cusson, Bruce, Reeves, Brandon, Fanelli, Jessica, Disher, Nataya, Samant, Anusha, DeGroot, Chritian, Youshock, Evan, Ligon, R. Miller, McCartney, Katherine, Garcia, Julio, Iloabachie, Chidi, Flores, Kelsey, VanEenenaam, David, Sands, Lauren, Robinson, Samuel, Sweatt, Nia, Fowler, Jacob, Fram, Madeline, Howard, Easton, Johnson, Kathleen, Udoh, Imoh, Nosow, Lillian, Howard, Lucy Winesett, Minh Pham, Quan Duc, Irfanullah, Aman, Ong, Tiffany, Enwezor, Chukwunyelu Henry, Dabagian, Hannah, Mendoza, Rafael, Rucci, Justin M., Law, Anica C., Bolesta, Scott, Quinn, Emily K., Boman, Karen, Yus, Santiago, Goodspeed, Valerie M., and Kumar, Vishakha

Published
2024
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26. The Role of Gender and Cognitive Skills on Other People's Generosity

Author

Takahashi, Yuki

Subjects
Economics - General Economics
Abstract

Cognitive skills are an important personal attribute that affects career success. However, colleagues' support is also vital as most works are done in groups, and the degree of their support is influenced by their generosity. Social norms enter in groups, and gender may interact with cognitive skills through gender norms in society. Because these gender norms penalize women with high potential, they can reduce colleagues' generosity towards these women. Using a novel experimental design where I exogenously vary gender and cognitive skills and sufficiently powered analysis, I find neither the two attributes nor their interactions affect other people's generosity; if anything, people are more generous to women with high potential. I argue that my findings have implications for the role of gender norms in labor markets., Comment: This draft is still preliminary; future versions can differ substantially from this version

Published
2020

27. Variation in coagulation factor activity levels cause discrepancies between activated partial thromboplastin time and anti-Xa activity for heparin monitoring: a retrospective observational study

Author

Saito, Tomoyo, Hayakawa, Mineji, Kumano, Osamu, Honma, Yoshinori, Murashita, Mone, Kato, Jun, Fukui, Syouki, Takahashi, Masaki, Takahashi, Yuki, Tsuchida, Takumi, Mizugaki, Asumi, Takauji, Shuhei, Hayamizu, Mariko, Yoshida, Tomonao, Katabami, Kenichi, Wada, Takeshi, and Maekawa, Kunihiko

Published
2023
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28. Differences in blood flow dynamics between balloon- and self-expandable valves in patients with aortic stenosis undergoing transcatheter aortic valve replacement

Author

Takahashi, Yuki, Kamiya, Kiwamu, Nagai, Toshiyuki, Tsuneta, Satonori, Oyama-Manabe, Noriko, Hamaya, Takeshi, Kazui, Sho, Yasui, Yutaro, Saiin, Kohei, Naito, Seiichiro, Mizuguchi, Yoshifumi, Takenaka, Sakae, Tada, Atsushi, Ishizaka, Suguru, Kobayashi, Yuta, Omote, Kazunori, Sato, Takuma, Shingu, Yasushige, Kudo, Kohsuke, Wakasa, Satoru, and Anzai, Toshihisa

Published
2023
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39. Liver stiffness assessed by magnetic resonance elastography predicts clinical outcomes in patients with heart failure and without chronic liver disease

Author

Tada, Atsushi, Nagai, Toshiyuki, Kato, Yoshiya, Omote, Kazunori, Oyama-Manabe, Noriko, Tsuneta, Satonori, Kudo, Yusuke, Nishida, Mutsumi, Nakai, Michikazu, Takahashi, Yuki, Saiin, Kohei, Naito, Seiichiro, Kobayashi, Yuta, Takenaka, Sakae, Mizuguchi, Yoshifumi, Kamiya, Kiwamu, Konishi, Takao, Sato, Takuma, Kudo, Kohsuke, and Anzai, Toshihisa

Published
2023
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41. Prognostic Value of Liver Fibrotic Markers in Patients With Heart Failure

Author

Tada, Atsushi, Nagai, Toshiyuki, Kato, Yoshiya, Oyama-Manabe, Noriko, Tsuneta, Satonori, Nakai, Michikazu, Yasui, Yutaro, Kazui, Sho, Takahashi, Yuki, Saiin, Kohei, Naito, Seiichiro, Takenaka, Sakae, Mizuguchi, Yoshifumi, Kobayashi, Yuta, Ishizaka, Suguru, Omote, Kazunori, Sato, Takuma, Konishi, Takao, Kamiya, Kiwamu, Kudo, Kohsuke, and Anzai, Toshihisa

Published
2023
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42. Diophantine property of matrices and attractors of projective iterated function systems in $\mathbb{RP}^1$

Author

Solomyak, Boris and Takahashi, Yuki

Subjects
Mathematics - Dynamical Systems, 11K60, 15B48, 28A80
Abstract

We prove that almost every finite collection of matrices in $GL_d(\mathbb{R})$ and $SL_d(\mathbb{R})$ with positive entries is Diophantine. Next we restrict ourselves to the case $d=2$. A finite set of $SL_2(\mathbb{R})$ matrices induces a (generalized) iterated function system on the projective line $\mathbb{RP}^1$. Assuming uniform hyperbolicity and the Diophantine property, we show that the dimension of the attractor equals the minimum of 1 and the critical exponent., Comment: 26 pages; small changes in the proof of Theorem 1.7 compared with the previous version. Accepted for publication in IMRN

Published
2019

48. Sums of two self-similar Cantor sets

Author

Takahashi, Yuki

Subjects
Mathematics - Dynamical Systems
Abstract

We show that for any pair of self-similar Cantor sets with sum of Hausdorff dimensions greater than 1, one can create an interval in the sumset by applying arbitrary small perturbations (without leaving the class of self-similar Cantor sets). In our setting the perturbations have more freedom than in the setting of the Palis conjecture, so our result can be viewed as an affirmative answer to a weaker form of the Palis conjecture., Comment: 13 pages. arXiv admin note: text overlap with arXiv:1807.11801

Published
2018

49. On the interior of projections of planar self-similar sets

Author

Takahashi, Yuki

Subjects
Mathematics - Dynamical Systems
Abstract

We consider projections of planar self-similar sets, and show that one can create nonempty interior in the projections by applying arbitrary small perturbations, if the self-similar set satisfies the open set condition and has Hausdorff dimension greater than 1., Comment: 12 pages, 1 figure

Published
2018

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