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157 labs · 25 student voices
Faculties at Hokkaido University ›
Hisashi Haga, Professor
1 student voices
The Cell Dynamics Science Lab studies how cells move together as a group and what shapes they form. Epithelial cells such as those of the skin stay firmly attached to their neighbors while moving in the same direction. The lab follows this mechanism under the microscope. It has also become clear that the stiffness and viscosity of the culture substrate, which serves as the scaffold for cells, change the shape of cell groups and the behavior of cancer cells. Bringing a physics perspective to biology, the lab investigates how three-dimensional shapes are formed and how cancer invasion works.
Kiyoshi Kuramoto, Professor
1 student voices
The Planetary and Space Lab studies the atmospheres, internal structures, and surface environments of Earth and other planets. Its methods are wide-ranging: observations with spacecraft and telescopes, analysis of exploration data, and large-scale numerical simulations. Three units—exploration and observation, origin and evolution, and modeling and simulation—carry out research and education together as one team. Students choose a primary supervisor according to the research they want to pursue, and carry out their research while receiving guidance and advice from multiple faculty members.
Takeshi Kuritani, Professor
1 student voices
The Petrology and Volcanology research group studies phenomena related to magma and plate movements using materials science methods. Its research centers on fieldwork in Japan and overseas, magma synthesis experiments, and the analysis and chemical analysis of rock and experimental samples. The group also uses many new methods, including ultra-high-spatial-resolution analysis of rock microstructure, ultra-high-precision chemical analysis, and numerical simulation. The group has two subgroups, Volcano and Orogenic Belt, and covers a wide range of fields, from igneous petrology to metamorphic petrology, geochemistry, structural geology, and geochronology.
Hiroaki Takahashi, Professor
1 student voices
The Seismic Observation Lab studies the mechanisms of earthquakes and volcanic activity based on observations of earthquakes and crustal deformation. Data from several dozen observation stations across Hokkaido arrive in Sapporo in real time, and the lab uses them to monitor daily seismic activity. The lab values going out into the field to collect data in person, such as climbing active volcanoes like Mt. Tokachidake and Mt. Meakandake with equipment on their backs. The lab also takes part in international joint research with researchers in Russia and China, and in seafloor observations off the Pacific coast of Hokkaido.
Masanori Asakura, Professor
1 student voices
Prof. Asakura studies arithmetic geometry using the theory of motives as a guide. Motives are a vision conceived by Grothendieck in the 1960s; refined by many mathematicians since, they are now an active area of research. Two of the Millennium Prize Problems, the Hodge conjecture and the Birch and Swinnerton-Dyer conjecture, are also deeply connected to this field. Centered on the still-unsolved Beilinson conjecture, the research has recently been tackling problems by making active use of p-adic theory.
Yoichi Shibukawa, Professor
1 student voices
Prof. Shibukawa studies the Yang–Baxter equation and its solutions, within the field of integrable systems. In statistical mechanics, the (quantum) Yang–Baxter equation is the equation that guarantees a lattice model is solvable. The braid relation, which is equivalent to this equation, also makes sense as an equation on morphisms in a tensor category. The lab considers solutions in various tensor categories, seeking to grasp connections with representation theory, Hopf algebras, and solitons from a unified perspective.
Naohiko Kasuya, Associate Professor
1 student voices
Prof. Kasuya studies complex surfaces and the contact structures that appear on their boundaries. A typical example is a Stein surface and its strongly pseudoconvex boundary. Of particular interest are the Milnor fibers and singularity links of complex hypersurface singularities known as cusp singularities. Building on differential topology, the work also intersects with complex geometry, several complex variables, and singularity theory.
Masaharu Nagayama, Professor
1 student voices
The lab studies methods for understanding natural and biological phenomena from the viewpoint of mathematical sciences. A mathematical model imitates a phenomenon with equations, and when it is reproduced on a computer through numerical computation, the mechanisms hidden in the phenomenon become visible. Adding mathematical analysis makes it possible to extract mathematical structures shared by different phenomena. The lab investigates the motion of droplets and particles, the barrier function of the epidermis, and the motion of cells, in collaboration with experimental groups and companies.
Takao Namiki, Professor
1 student voices
Prof. Namiki studies the field collectively known as complex systems. A cellular automaton is a dynamical system that simply updates the 0s and 1s in a row of cells according to a simple rule, yet shows a wide variety of behavior. The lab treats this using ideas from thermodynamics and statistical mechanics, aiming to grasp the properties of the system from how its entropy decreases. The lab also works on quantum walks, which are related to quantum computation, chaotic time-series analysis of EEG (brainwave) data, and the construction of a digital library of mathematics.
Satoshi Masaki, Professor
1 student voices
Prof. Masaki works mainly on nonlinear dispersive equations within the theory of partial differential equations. Roughly speaking, dispersive equations are equations about “waves.” The lab deals with the nonlinear Schrödinger equation, the nonlinear Klein-Gordon equation, the KdV equation, and others. A major goal is to understand how nonlinearity affects the behavior of solutions after a long time.
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