Target audience: Interns, Students, PostDocs, and those who are interested in the same research field. Language: English

OIST - Osaka University: A Recipe for Scientific Synergy-Series 2 by Dr. Noriyuki Tsumaki and Dr. Ichiro Masai

OIST-Tohoku U. 2 ^nd Joint Workshop on Marine Science “ Oceans – and the impact of humans and climate change ”

Abstract:

This talk will present the result of a joint work with Mathav Murugan(University of British Columbia) that, for a symmetric diffusion on a complete locally compact separable metric space, two-sided sub-Gaussian heat kernel bounds imply the singularity of the energy measures with respect to the reference measure.

For self-similar (scale-invariant) diffusions on self-similar fractals, the singularity of the energy measures is known to hold in many cases by Kusuoka (1989, 1993), Ben-Bassat, Strichartz and Teplyaev (1999), Hino (2005), and Hino and Nakahara (2006), but these results heavily relied on the self-similarity of the space.

It was conjectured, and had remained open for the last two decades to prove, that the singularity of the energy measures should follow, without assuming the self-similarity, just from two-sided sub-Gaussian heat kernel bounds of the same form as those for diffusions on typical self-similar fractals. The main result of this talk answers this conjecture affirmatively.

The first half of the talk will be devoted to a brief introduction to self-similar diffusions (and their associated Dirichlet forms) on self-similar fractals and to sub-Gaussian heat kernel bounds for symmetric diffusions, so that the talk will (hopefully) be accessible even to those without prior knowledge about diffusions on fractals.

Please click here to register

[Neuroscience Club] Prof. Hidehiko Inagaki, Research Group Leader, Neural Dynamics & Cognitive Functions Group

We are excited to have an online seminar by Prof. Inagaki from Max Plank Florida Institute for Neuroscience.

You can join the seminar via ZOOM (meeting ID: 782 721 4941, Password: 436475).

OIST-UT Joint talk series for future science-Season6: High Fidelity Genome Sequencing: What have we been missing ?

Kay Jin Lim, Nanyang Technological University Title: Descent Algebra of Type A

Target audience: Interns, Students, PostDocs, and those who are interested in the same research field. Language: English

Title: What makes human special? A molecular approach

Please welcome Prof. Pääbo, our Adjunct Professor, and join his very first faculty talk at OIST!

Yasha, Akiko, and the CPR team

Dr. Daniel Shiu, Chief Cryptographer of Arqit, a leading company with transformational quantum encryption technology, will speak on "Public-cryptography is bad for security".

Registration link: TUESDAY, 19 APRIL 2022, 5:00PM (JST) | OIST Groups

Target audience: Interns, Students, PostDocs, and those who are interested in the same research field.

Language: English

The seminar aims to initiate interactions between international and Japanese researchers and students in the field of Ecology and Evolution. The 8th event is presented by Ryosuke Nakadai from National Institute for Environmental Studies.

Please register from the next link: https://sites.google.com/view/jee-english-seminar

Title: Individual-based temporal beta-diversity: Individual turnover and compositional shift in a community

Timeline 15:00~15:30: seminar 15:30~16:00: questions and discussion 16:00~: mixer

Abstract: As increasing the necessity to assess the influences of global climate change and anthropogenic disturbances on biodiversity, the concept of beta-diversity has been extended to a temporal context and has been intensively studied in recent years. In studies of temporal beta-diversity, methodologies used in spatial beta-diversity have often been used simply. However, temporal beta-diversity often includes "the same individual" between two communities implicitly, which has not been the case with spatial communities, so it is necessary to consider the effects of individual turnover and persistence for quantifying temporal beta-diversity. I focused on both individual identity and the persistence of individuals within a temporal beta-diversity framework and developed some novel indices. In my presentation, I will explain the novel indices which I recently developed and the concepts behind them, showing examples of analysis. I would also like to discuss the prospects for community assemblages through both time and individual identity.

OIST Workshop | Main organizer: Thomas Busch (Quantum Systems Unit) | OIST members are welcome to attend all scientific sessions (registration required). | Website | Venue: Seminar Room B250, OIST Main Campus and Online

This conference will be a hybrid conference with both online and on-site attendees. We will accept on-site participants from within Japan only.

We ask for you understanding that the dates are subject to change due to the ongoing COVID-19 situation.

The next ORC Assembly will be the last for the previous ORC representatives and the first for the new representatives! Please join us as we hand over to the new office.

Also on the agenda: Future plans of the new office, with plenty of time for discussion, and a report on the recent Faculty Assembly.

These seminars examine the science of how to bring macroscopic (large) systems into the quantum regime. The preparation of large Schrodinger cats is one of the long sought goals of quantum science. Researchers seek to do this for many reasons – to see if it can be done at all – does quantum mechanics still hold for large objects – is there new science that appears when objects become large/massive? Can macroscopic/large quantum systems be useful as precision sensors – and how can we preserve/protect the large scale quantum properties in such systems. These series of talks (experimental and theoretical), will show some facets/aspects of how some researchers are aiming towards the building of large Quantum Cats. Coffee and Okinawan Donuts are supplied during the morning.

Dean Yates, Queen Mary University of London Title: Spin representations of the symmetric group

Title: A masing spin ensemble: temperature, light, amplifier, and diamond

Abstract:

I will start discussing two fundamental concepts in nature, temperature and light, followed by one of the indispensable basic components in the modern information society, amplifiers. Then I will try to show that combining these three concepts leads to our ongoing project, a heat-driven coherent microwave oscillator based on a spin ensemble in a diamond crystal.

John Murray, Maynooth University Title: A Schur-positivity conjecture inspired by the Alperin-Mckay conjecture

Target audience: Interns, Students, PostDocs, and those who are interested in the same research field.

Language: English

Language: English

Target audience: Interns, Students, PostDocs, and those who are interested in the same research field.

Language: English

A 2-day seminar held by Algorithms for Ecological and Evolutionary Genomics (Gene Myers) Unit along with Genomics and Regulatory Systems (Nicholas Luscombe) Unit as the co-host.

In the seminar, entitled " OIST-UT Genomics Research Seminar ", we invite 3 Ph.D. students from The University of Tokyo (Shinichi Morishita lab) to OIST, and each of the 8 researchers in total from UT and OIST will give a 20 min talk on their work plus 10 min Q&A session.

The seminar will be held on site at OIST, although you can also join via zoom (link below). On each day, right after the seminar we will have time and place for further discussion and interaction with the presenters (while keeping distance).

Susumu Ariki, Osaka University

Title: Three lectures on modular Lie algebras (Part III)

A 2-day seminar held by Algorithms for Ecological and Evolutionary Genomics (Gene Myers) Unit along with Genomics and Regulatory Systems (Nicholas Luscombe) Unit as the co-host. In the seminar, entitled " OIST-UT Genomics Research Seminar ", w e invite 3 Ph.D. students from The University of Tokyo (Shinichi Morishita lab) to OIST, and each of the 8 researchers in total from UT and OIST will give a 20 min talk on their work plus 10 min Q&A session. The seminar will be held on site at OIST, although you can also join via zoom (link below). On each day, right after the seminar we will have time and place for further discussion and interaction with the presenters (while keeping distance).

Susumu Ariki, Osaka University

Title: Three lectures on modular Lie algebras (Part II)

Theoretical Physics Seminar. Speaker: Yasha Neiman (Quantum Gravity). Title: "A new kind of Feynman rules: what is Higher Spin Gravity? (part 2)"

Susumu Ariki, Osaka University

Title: Three lectures on modular Lie algebras (Part I)

OIST x ASJ 「エネルギーと気候の未来」セミナーシリーズ

This talk discusses a generalized class of supersolutions, so-called \(p\)-supercaloric functions, to the parabolic \(p\)-Laplace equation. This class of functions is defined as lower semicontinuous functions that are finite in a dense set and satisfy the parabolic comparison principle. Their properties are relatively well understood in the slow diffusion case \(p>2\), but little is known in the fast diffusion case \(1

Speaker: Professor Asuka Takatsu, Tokyo Metropolitan University Title: Curvature and Optimal transport Abstract

In this series of lectures, I first review the notion of curvature (Gaussian curvature and Ricci curvature). In particular, I recall some comparison theorems (Toponogov's triangle comparison theorem, Bishop--Gromov volume comparison theorem etc). Then I introduce a generalized notion of curvature in non-smooth spaces.

Target audience: Interns, Students, PostDocs, and those who are interested in the same research field.

Language: English

Kyenote Lecture for CryoEM Course

Speaker: Robert Spencer, University of Cambridge

Title:(Some) Gram Determinants for \(A_n\) nets

Seva will talk about string diagrams.

Target audience: Interns, Students, PostDocs, and those who are interested in the same research field.

Language: English

Internal and External workshop

Theoretical Physics Seminar. Speaker: Yasha Neiman (Quantum Gravity). Title: "A new kind of Feynman rules: what is Higher Spin Gravity?"

Cassie George is an RSD intern working with the Environmental Informatics Section in collaboration with the Takagi lab at Hokkaido University

Quantum Gravity group meeting. Short stories by everyone.

Monge-Ampère type equations are fully nonlinear elliptic partial differential equations that arise when considering the deformation of volume induced by some kind of transformation. In this talk I will discuss two such cases, the optimal transport problem, and geometric optics problems. The former discusses the most efficient way of transporting some resource to another location, and the second is a simplified model for optical instruments (such as lenses or mirrors) in which light is treated as a particle rather than a wave. I will attempt to focus more on heuristics rather than technical details; no knowledge of PDEs is assumed. A portion of this talk is based on joint work with N. Guillen. Please register before February 17, 5 pm. Click here to register! The colloquium will be held once a month online. Each event consists of a one-hour talk on mathematics followed by a one-hour diversity panel discussion session. February speaker is Jun Kitagawa from Michigan State University .

In the mathematics part, we will hear an exciting overview talk for a general audience. In the discussion session, we will hear about the speaker's experience as a mathematician. Y ou can take inspiration from them and exchange ideas with other participants in a small group. After the sessions are over, there will be a tea time where participants can chat freely.

演題 ： 沖縄のヘリウム再利用ネットワークを目指して 日時 ： 2022/02/22 (火) 15:00-16:00 発表機関 ： 沖縄科学技術大学院大学(OIST) 場所 ： ZOOMによるオンラインセミナー　(無料、事前登録が必要 講師 ： 　高田　一馬氏(OIST)　宗本　久弥氏(琉球大学) 言語 ： 　日本語

Title : Development of helium recycling network in Okinawa Date and time : Tuesday, February 22, 2022 15:00-16:00 Speakers : Kazuma Takada (OIST) , Hisaya Munemoto (University of the Ryukyus) Language : Japanese Registration required

Title : Context-dependence and generality in community ecology - two sides of the same coin?

Abstract : Community ecology is often derided for its lack of general theory. Factors limiting one population's growth can be insignificant elsewhere. While this flavor of context-dependence clearly impedes a predictive theory of ecology, it also paradoxically functions as a very general mechanism that maintains biodiversity. I will review how a context-dependent competition theory can clarify the general mechanisms underlying species coexistence and geographic range limits. I'll then riff on the theme of ecological context-dependence as it pertains to our unit members' work on carnivorous plants, pestiferous bats, and noxious roadside weeds.

https://groups.oist.jp/faculty-lunch

Protein Engineering and Evolution Unit would like to invite you to a seminar!

Target audience: Interns, Students, PostDocs, and those who are interested in the same research field.

Language: English

Annual Inspection_Ultracentrifuges

Speaker: Stephen Doty, Loyola University Chicago

Title: Schur-Weyl duality for braid and twin groups via the Burau representation

Quantum Birds: The Magnetic Compass Sense of night-migratory Songbirds

Prof. Henrik Mouritsen

Institute of Biology and Environmental Sciences, University Oldenburg,

Prof. Mouritsen will present how night-migratory songbirds seem to use a quantum mechanical mechanism to sense magnetic compass information which they use to navigate with exquisite precision over thousands of kilometres (Mouritsen 2018). In the past years, evidence has mounted that migratory birds use a light-dependent, radical pair-based mechanism to sense the axis of the geomagnetic field lines (Hore & Mouritsen 2016). The magnetic compass of night-migratory birds is sensitive to anthropogenic electromagnetic field disturbances being ca. 1000 times weaker than the current WHO guideline limits (Engels et al. 2014; Schwarze et al. 2016). This result could be significant in relation to migratory bird conservation measures and strongly indicates that the basic sensory mechanism underlying the magnetic compass of night-migratory songbirds should be based on quantum mechanical principles rather than classical physics. Neuroanatomical data have shown that magnetic compass information is detected in the eye and then processed in a small part of the thalamofugal visual pathway terminating in the visual processing centre “Cluster N” (Mouritsen et al. 2005; Liedvogel et al. 2007; Feenders et al. 2008; Zapka et al. 2009). When Cluster N is deactivated, migratory European Robins can no longer use their magnetic compass, whereas their star compass and sun compass abilities are unaffected (Zapka et al. 2009). The lagena and associated pathways remained intact. Bilateral section of the trigeminal nerve had no effect on the birds’ ability to use their magnetic compass (Zapka et al. 2009). Very recently, we could also show that the light-sensitive protein Cryptochrome 4 from a night-migratory songbird is magnetically sensitive in vitro based on a radical-pair mechanism (Xu et al. 2021).

Zoom link

https://oist.zoom.us/j/97850326939

Speaker: Daniel Tubbenhauer , University of Sydney Title: On weighted KLRW algebras

CFF unit is pleased to invite you to the seminar.

Theoretical Ecology Seminar/Discussion Series