Who you’re gonna call? The development of university digital leaders

In our hyper-connected digitised educational world, university tutors are interested in capitalising on affordances of digital trends in teaching and learning. Students, under the alias of preservice- teachers, walk among them equipped with digital skills in areas of their interest. How can we encourage collaboration between tutors and students that can promote the use of the digital force wisely, support the development of students’ professional identities further and extend tutors’ digital competences? The story of nine tutors and eleven undergraduate pre-service-teachers working together on digital partnerships is set against discussions around digital leadership and citizenship. This case study aims to highlight how universities can respond to technology-driven change by engaging students further and support their awareness of digital citizenship. The overall results showed that the informal learning that students have capitalised outside the classroom can be used to scaffold their development of digital citizenship through offline community engagement. It demonstrates the advantage of using such opportunities as a means to encourage citizenship practices among university student communities and the positive impact that such synergies can have on all the participants

Endogenous capital depreciation and technology shocks

I examine the dynamic impact of capital maintenance on key aggregates through the depreciation rate. I find that two factors are crucial for the short-run effects of Total Factor Productivity and Investment-Specific shocks: (i) the marginal efficiency of maintenance and its connection with the rate of utilization, and (ii) the interplay between the intertemporal effect of maintenance and the substitution effect between maintenance and utilization. The latter is expressed by the relative size of the elasticity of maintenance to the Hicksian elasticity of complementarity between maintenance and utilization. These theoretical results suggest that to match the observed responses of the macroeconomic aggregates the sign of the cross derivative should be negative and that the relative size of the Hicksian elasticity should be smaller than the maintenance elasticity of marginal depreciation. Finally, the model suggests that the main macroeconomic aggregates react procyclically, with the exception of maintenance, the behavior of which depends on the type of the shock

An analogue of Dubrovin's conjecture

We propose an analogue of Dubrovin's conjecture for the case where Fano manifolds have quantum connections of exponential type. It includes the case where the quantum cohomology rings are not necessarily semisimple. The conjecture is described as an isomorphism of two linear algebraic structures, which we call "mutation systems". Given such a Fano manifold $X$, one of the structures is given by the Stokes structure of the quantum connection of $X$, and the other is given by a semiorthogonal decomposition of the derived category of coherent sheaves on $X$. We also prove the conjecture for a class of smooth Fano complete intersections in a projective space.Comment: 42 pages. To appear at Annales de l'Institut Fourie

Real effects of bank capital regulations: global evidence

We examine the effect of the full set of bank capital regulations (capital stringency) on loan growth, using bank-level data for a maximum of 125 countries over the period 1998-2011. Contrary to standard theoretical considerations, we find that overall capital stringency only has a weak negative effect on loan growth. In fact, this effect is completely offset if banks hold moderately high levels of capital. Interestingly, the components of capital stringency that have the strongest negative effect on loan growth are those related to the prevention of banks to use as capital borrowed funds and assets other than cash or government securities. In contrast, compliance with Basel guidelines in using Basel- and credit-risk weights has a much less potent effect on loan growth

Induced Minor Free Graphs: Isomorphism and Clique-width

Given two graphs $G$ and $H$, we say that $G$ contains $H$ as an induced minor if a graph isomorphic to $H$ can be obtained from $G$ by a sequence of vertex deletions and edge contractions. We study the complexity of Graph Isomorphism on graphs that exclude a fixed graph as an induced minor. More precisely, we determine for every graph $H$ that Graph Isomorphism is polynomial-time solvable on $H$-induced-minor-free graphs or that it is GI-complete. Additionally, we classify those graphs $H$ for which $H$-induced-minor-free graphs have bounded clique-width. These two results complement similar dichotomies for graphs that exclude a fixed graph as an induced subgraph, minor, or subgraph.Comment: 16 pages, 5 figures. An extended abstract of this paper previously appeared in the proceedings of the 41st International Workshop on Graph-Theoretic Concepts in Computer Science (WG 2015

モジュラー多様体の双有理幾何学とコンパクト化及びモジュラー形式の数論について

京都大学新制・課程博士博士(理学)甲第24385号理博第4884号新制||理||1699(附属図書館)京都大学大学院理学研究科数学・数理解析専攻(主査)准教授 伊藤 哲史, 教授 雪江 明彦, 教授 池田 保学位規則第4条第1項該当Doctor of ScienceKyoto UniversityDFA