On Hadwiger’s covering functional for the simplex and cross-polytope
10:30-12:30
Talk & Lecture
1
2775262
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2023-06-23
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Speaker: Lian Yanlu (School of Mathematics, Hangzhou Normal University)Venue: Room 203, Building 2, Haina Court, Zijingang CampusAbstract: In 1957, Hadwiger made a conjecture that every n-dimensional convex body can be covered by 2^n translations of its interior. The Hadwiger's covering functional is the smallest positive number r such that K can be covered by m translations of rK. Due to Zong's program, we study the Hadwiger's covering functional for the simplex and the cross-polytope. In this paper, we give upper bounds for the Hadwiger's covering functional of the simplex and the cross-polytope.
In this paper, we give upper bounds for the Hadwiger's covering functional of the simplex and the cross-polytope.
2023-06-28 10:30:00
Room 203, Building 2, Haina Court, Zijingang Campus
Scared Away: Credit Demand Response to Expected Motherhood Penalty in the Labor Market
14:00-15:30
Talk & Lecture
2
2774182
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2023-06-19
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Speaker: QIAN Wenlan, Director of the NUS Institute of Real Estate and Urban Studies (IREUS)Venue: School of Economics, Room 530, Zijingang CampusTime: June 22nd, 14:00-15:30Abstract: We exploit a policy reform that exogenously deteriorates mothers’ job prospects. China switched from a one-child policy to two-child in 2016, which increased female workers’childbearing and caring responsibilities. Using a leading peer-to-peer lending platform targeting college students in China, we find that loan applications from female college students decrease by 15.6% relative to male students after the reform. The drop sug[1]gests that female students can anticipate the poorer future job prospects; they reduce their expenditure and invest less in human capital accordingly. Applications for long[1]term and large-amount loans and loans for human capital investment purpose experi[1]ence the largest decline. We also find that loan applications decrease after provincial governments’ staggered extension of maternity leaves and that the decrease is more prominent when the expected motherhood penalty is greater. The results are unlikely driven by credit supply channels.
Wenlan Qian is Professor of Finance and Real Estate, and Ng Teng Fong Chair Professor in Real Estate at the NUS Business School. She is fellow of the Asian Bureau of Finance and Economics Research, Luohan Academy at Alibaba Group, and the Homer Hoyt Weimer School of Advanced Studies in Real Estate and Land Economics. Currently, Wenlan Qian is editor of Real Estate Economics and associate editor of Financial Management.
QIAN Wenlan
2023-06-22 13:44:35
School of Economics, Room 530, Zijingang Campus
Zeta Functions of Shimura Varieties: Past, Present, and the Near Future
16:00-17:00
Talk & Lecture
3
2774201
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2023-06-19
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Speaker: ZHU Yihang, University of MarylandVenue: Lecture Hall, School of Mathematical SciencesTime: June 21st, 16:00-17:00Abstract: I will first recall the general expectations of Shimura, Langlands, and Kottwtiz on the shape of the zeta function of a Shimura variety, or more generally its etale cohomology. I will then report on some recent progress which partially fulfills these expectations, for Shimura varieties of unitary groups and special orthogonal groups. Finally, I will give a preview of some foreseeable developments in the near future.
Yihang Zhu is an assistant professor at University of Maryland. He received his phd at Harvard University under Mark Kisin, and was Ritt Assistant Professor at Columbia University before joining Maryland. His research interest includes Shimura varieties and affine Deligne-Lusztig varieties.
ZHU Yihang
2023-06-21 14:08:57
Lecture Hall, School of Mathematical Sciences
Discretionary tone in reward-based crowdfunding: Do project owners talk their way to success?
9:30-12:30
Talk & Lecture
4
2774190
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2023-06-19
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Speaker:SHAN Yuan, Associate Professor, UWA Business School, Accounting and FinanceVenue: School of Management, A423, Zijingang CampusTime: June 21st, 9:30-12:30Abstract: This study examines the relationship between abnormal tone and project performance of reward-based crowdfunding (RBC) using the Kickstarter data from 2009 to 2020. We document a negative relationship between abnormal tone in the RBC campaign section (Story) and project performance, but a positive relationship between abnormal tone in the section of Risks and Challenges (Risk) and funding success. We find that common-law jurisdiction has strong moderation in elevating the success of project with abnormal tone in Risk section, compared to civil-law jurisdiction does. Using the US SEC equity crowdfunding legislation, we find that the exogenous shock reduces the effect of abnormal tone in both Story and Risk sections. Further investigation of the concurrent effect of abnormal tone in the two sections shows that the increase in the discretionary tone given that it is overly optimistic has a negative effect on funding performance. Last, based on a machine learning Sent-latent Dirichlet Allocation model, we explore up to 70 specific risk categories embedded in Kickstarter projects, and we find that eight of them, namely downstream risk, international risk, product introduction risk, cost risk, funding risk, product quality risk, stakeholder risk, and human resource risk, are strongly and negatively associated with project success.
Dr. George Shan is an Associate Professor in the Accounting and Finance Discipline of the Business School at The University of Western Australia. He holds Bachelor of Commerce, Bachelor of Applied Finance, Master of Commerce (Accounting) and completed his PhD in Accounting and Corporate Governance.
SHAN Yuan
2023-06-21 13:52:56
School of Management, A423, Zijingang Campus
Climate Change and Finance
9:00-11:00
Talk & Lecture
5
2773759
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2023-06-16
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Speaker: Patrick BoltonVisiting Professor of Finance at Imperial College LondonPast president of the American Finance AssociationFellow of American Finance AssociationFellow of American Academy of Arts and SciencesFellow of Econometric SocietyVenue: Lecture Hall 120, School of Economics, Zijingang CampusTime: 9:00-11:00 on 19th, June
Patrick Bolton, Visiting Professor of Finance at Imperial College London, Past president of the American Finance Association
Patrick Bolton
2023-06-19 09:00:00
Lecture Hall 120, School of Economics, Zijingang Campus
Harnessing the power of innovation in research: A comprehensive guide for researchers
18:00-19:30
Talk & Lecture
6
2773546
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2023-06-16
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Speaker: Dr. Ali Matin NazarVenue: Room 429, Chengjun Building 4, West Section, Zijingang Campus
Speaker:Dr. Ali Matin NazarVenue:Room 429, Chengjun Building 4, West Section, Zijingang Campus
Ali Matin Nazar
2023-06-19 09:24:26
Do Financial Market Developments Benefit Employees? Evidence from the Derivatives Markets, with Anastasia Richmond and Dragon Yongjun Tang
15:00-16:30
Talk & Lecture
7
2773425
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2023-06-15
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Speaker: WANG Qian, Warwick Business SchoolVenue: Room 530, School of EconomicsTime: 2023.6.16 15:00-16:30Abstract: Do financial market developments matter for rank-and-file workers? We find that equity options or credit default swaps (CDS) trading on a firm improves employee welfare ratings. The results are robust to alternative welfare outcome measures including a firm’s selection into ``Best Companies to Work for'', workplace safety, pay inequality and pay level. We further find that derivatives trading decreases managerial short-termism by stimulating informed trades. The derivatives trading effects on employee welfare are more pronounced in firms with high market competition, technological intensity, and analyst coverage. Firms spend more on human capital development when derivatives linked to their equity or debt are actively traded. These findings suggest that derivatives can have real effects on employee welfare by reducing managerial short-termism..
Do financial market developments matter for rank-and-file workers? We find that equity options or credit default swaps (CDS) trading on a firm improves employee welfare ratings. The results are robust to alternative welfare outcome measures including a firm’s selection into ``Best Companies to Work for'', workplace safety, pay inequality and pay level. We further find that derivatives trading decreases managerial short-termism by stimulating informed trades.
WANG Qian
2023-06-16 17:12:27
Zijingang Campus
Towards quantum learning advantage
15:30
Talk & Lecture
8
2772717
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2023-06-14
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Speaker: DENG Dongling, Assistant Professor, Tsinghua UniversityVenue: Room 319, Building 8, Haina Court, Zijingang CampusAbstract: Quantum learning advantage, also known as quantum learning supremacy, represents the ambitious aim of showcasing the ability of a programmable quantum device to solve machine learning problems that exceed the capabilities of current classical computers. This pursuit encompasses substantial challenges for both experimentalists and theorists, shaping a vibrant research frontier that has garnered increasing attention across diverse communities.In this talk, I will provide a concise introduction to the field of quantum learning advantage, highlighting its significance and potential implications. I will delve into recent progress made in this burgeoning area, shedding light on the strides taken towards achieving quantum learning advantage. Drawing from specific concrete examples, I will explore promising instances where quantum systems display the potential to surpass classical limitations in machine learning tasks. Furthermore, I will outline the notable challenges inherent in demonstrating quantum learning advantage with existing proposals and devices.
Pro. DENG Dongling, an assistant professor of Tsinghua University, focusing on quantum artificial intelligence, quantum information and computation, topological phases of matter, cold atoms and quantum nonequilibrium systems.
2023-06-16 15:30:00
Hukou Reform, Return Migration and lmplications for Urban Development in China
14:00-15:30
Talk & Lecture
9
2771332
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2023-06-09
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Speaker:ZHANG JipengVenue: School of Economics, Room 618Abstract: In recent years, China has made remarkable progress in Hukou reform. Based on government policy documents and our fieldwork, we construct a quantitative measure of Hukou registration barriers in Chinese cities. First-tier and some second-tier cities set high criteria for local Hukou registration that have become more stringent over time, while other cities have much lower requirements. Drawing on household survey data, we show that stricter Hukou restrictions lead to a sianificant increase in return migration, especially among those with rural Hukou, low education level, and poor health status. Finally, we estimate the effects of further loosening Hukou restrictions, finding that granting Hukou to migrants in lower-tier cities would increase educational attainment, but impose fiscal strains on top-tier cities.
Jipeng Zhang is a Professor of Economics and a Research Fellow of the lnstitute of State Governance at the Shandong University. His research interests are public economics, migration and urban development, with a focus on China’s public finance, Hukou reform, and poverty alleviation resettlement.
ZHANG Jipeng
2023-06-09 15:30:13
School of Economics, Room 618