101,609 Works

ICSID Review, Peer Review Board

Bashar H. Malkawi
Member, ICSID Review, Peer Review Board

ICSID Review, Peer Review Board

Bashar H. Malkawi
Member, ICSID Review, Peer Review Board

Blasenbildung im verdampfenden Rieselfilm

Herbert Struve
Verhalten der Blasen im Rieselfilm bei glatter und welliger Strömung. Einfluß einer rauhen Rohroberfläche. Blasenkeimstellen bei Flächenerhitzung. Geschlossene Blasenschicht. Aufreißen des Rieselfilms bei starker Überhitzung. Mit Zeitdehnung.

Verecunda: A window to the Scottish Roman Past (part 1 - VR)

Klemens Kopetzky & Maria Economou
VR video introduction to the "Verecuda - A window to the Scottish past" experience, created in the context of the EMOTIVE project for the Antoine Wall Gallery in the Hunterian Museum in Glasgow UK. More information on the experience can be found here: https://emotiveproject.eu/index.php/what-we-do/experiences/

Verecunda: A window to the Scottish Roman Past (part 1 - VR)

Klemens Kopetzky & Maria Economou
VR video introduction to the "Verecuda - A window to the Scottish past" experience, created in the context of the EMOTIVE project for the Antoine Wall Gallery in the Hunterian Museum in Glasgow UK. More information on the experience can be found here: https://emotiveproject.eu/index.php/what-we-do/experiences/

adwokat Piotr Sobanski Zielona Gora - independent researcher

Adwokat Piotr Sobanski
adwokat dr Piotr Sobański LL.M. Uniwersytet Zielonogórski Wydział Prawa i Administracji Katedra Prawa Konstytucyjnego, Europejskiego i Międzynarodowego
Piotr Sobański is an independent researcher. He holds an LL.M. degree from European University Viadrina Frankfurt (Oder) (2002). Since 2018 he is a doctor of laws (Adam Mickiewicz University,Poznań). Dr. Sobański lives and works in Zielona Góra. Since 2019 he works at the University of Zielona Gora as an adjunct in the Faculty of Law. He teaches...

adwokat Piotr Sobanski Zielona Gora - independent researcher

Adwokat Piotr Sobanski
adwokat dr Piotr Sobański LL.M. Uniwersytet Zielonogórski Wydział Prawa i Administracji Katedra Prawa Konstytucyjnego, Europejskiego i Międzynarodowego
Piotr Sobański is an independent researcher. He holds an LL.M. degree from European University Viadrina Frankfurt (Oder) (2002). Since 2018 he is a doctor of laws (Adam Mickiewicz University,Poznań). Dr. Sobański lives and works in Zielona Góra. Since 2019 he works at the University of Zielona Gora as an adjunct in the Faculty of Law. He teaches...

adwokat Piotr Sobanski Zielona Gora - independent researcher.pdf

Adwokat Piotr Sobanski
adwokat dr Piotr Sobanski LL.M.
Uniwersytet Zielonogórski
Wydział Prawa i Administracji
Katedra Prawa Konstytucyjnego,
Europejskiego i Międzynarodowego

Piotr Sobański is an independent researcher. He holds an LL.M.degree from European University Viadrina Frankfurt (Oder) (2002).Since 2018 he is a doctor of laws (Adam Mickiewicz University,Poznań). Dr. Sobański lives and works in Zielona Góra. Since 2019he works at the University of Zielona Gora as an adjunct in theFaculty of Law. He teaches International Law, German Law andEuropean Law....

adwokat Piotr Sobanski Zielona Gora - independent researcher.pdf

Adwokat Piotr Sobanski
adwokat dr Piotr Sobanski LL.M.
Uniwersytet Zielonogórski
Wydział Prawa i Administracji
Katedra Prawa Konstytucyjnego,
Europejskiego i Międzynarodowego

Piotr Sobański is an independent researcher. He holds an LL.M.degree from European University Viadrina Frankfurt (Oder) (2002).Since 2018 he is a doctor of laws (Adam Mickiewicz University,Poznań). Dr. Sobański lives and works in Zielona Góra. Since 2019he works at the University of Zielona Gora as an adjunct in theFaculty of Law. He teaches International Law, German Law andEuropean Law....

First Principles Model Hamiltonian Ensembles for Light Harvesting: Modeling Dissipative Down Conversion - Signatures of Vibronic Energy Transfer in Nonlinear 2DES Signals - CSDM+PLDM

David Coker
Accurate model Hamiltonians for excitation energy transfer, including vibronic transitions, in a variety of down-conversion pigment-protein complexes are parameterized, using Molecular Dynamics and first principles calculations. Semi-classical methods based on a new hybrid partial linearized and coherent state density matrix dynamics approach are outlined and used to compute non-linear 2D electronic spectra for these models elucidating the signatures of excitonic and vibronic energy transfer in these systems. Results are analyzed in terms of simple models...

Classical emulation of quantum-coherent thermal machines

Luis A. Correa
The performance enhancements observed in various models of continuous quantum thermal machines have been linked to the buildup of coherences in a preferred basis. But, is this connection always an evidence of 'quantum-thermodynamic supremacy' By force of example, we show that this is not the case. In particular, we compare a power-driven three-level continuous quantum refrigerator with a four-level combined cycle, partly driven by power and partly by heat. We focus on the weak driving...

Is the dynamics of biomolecular excitons quantum coherent

Michael Thorwart

A Global Subspace Optimization Algorithm for Minimum Energy Molecular Cluster Conformation

Zhiyun Wu
We consider the problem to obtain the optimal conformation of a given molecular cluster with the lowest possible potential energy. This problem has been studied as a test case for global optimization algorithms, and considered as a starting point for the study of more complicated conformational problems such as protein folding through potential energy minimization. Here we propose a global subspace optimization algorithm for the solution of the problem, with the variables of the energy...

Quantum non-Markovianity: A physicist's perspective

Philipp Strasberg
The rigorous detection and quantification of non-Markovianity in open quantum systems has recently gained a lot of attention. Despite generating many insights on the mathematical side, the proposed quantifiers of non-Markovianity are very hard to compute in practice and the relation to more traditional quantities of physical interest is not clear. In the first part of my talk I will present a very simple, yet rigorous way to witness non-Markovianty, which is based on linear...

Tumors versus T-cells, a simple co-evolutionary model

Herbert Levine
Recent advances in immunotherapy have brought to the fore questions regarding the conditions under which the adaptive immune system can recognize and eliminate cancer cells. Here we introduce a simple model of at the competition between detection and invasion and apply it to recent data from the TRACERX experiments. Our model produces interesting hypotheses regarding the age=dependence of cancer incidence and the ratio of cancer incidence "attempts" versus actual progression to detectable tumors.

Transient compartmentalization and its associated error thresholds

Luca Peliti
A recently proposed mechanism suggests that transient compartmentalization could have preceded cell division in prebiotic scenarios. Here, we study various classes of transient compartmentalization dynamics. We show that two regimes are possible: In a diffusion-limited regime (e.g. simple autocatalysis), a large noise is generated at the population level due to asynchronous growth. In contrast, in a replication-limited regime with many steps (e.g. polymerization), a low noise is generated at the population level. Since strong noise...

Exceptional points of the Lindblad operator of a two-level system

Naomichi Hatano
The Lindblad equation for a two-level system under an electric field is analyzed by mapping it to a linear equation with a non-Hermitian matrix. Exceptional points of the matrix are found to be extensive; the second-order ones are located on lines in a two-dimensional parameter space, while the third-order one is at a point.

Transfer tensor method: efficient simulation of open quantum systems

Javier Cerrillo
The transfer tensor method [1] is a compact and intuitive tool for the analysis and simulation of general open quantum systems. By extracting the information contained in short samples of the initial dynamics, it has the ability to extend the simulation power of existing exact approaches, like the chain-mapping DMRG-based simulation method TEDOPA [2] or stochastic methods [3]. Crucially, it can treat problems with initial system-environment correlations, such as emission and absorption spectra of multichromophoric...

Evolution in space

Daniel Weissman
Most populations are spread over spatial ranges much bigger than any one individual will explore in its lifetime. How does the simple fact of this spatial structure affect adaptive evolution and genetic diversity We quantify how space interacts with recombination (sex) to slow down or speed up adaptation by changing the amount of clonal interference among beneficial mutations, and to change how adaptation reshapes neutral diversity through genetic hitchhiking. We also show how the spatial...

Phenotype evolution as optimization

Jakub Otwinowski
Biological evolution can be described as a population climbing a fitness landscape, and has inspired a variety of derivative-free optimization algorithms. Here we describe how phenotype evolution has sophisticated optimization properties. In particular, natural selection approximates second order gradient descent (Newton's method), and recombination is efficient in generating diversity. We use these insights to design a new type of derivative-free optimization algorithm for continuous problems.

Gertrude Bell in Focus : Exploring and Photographing the Middle East

Lisa Cooper
Dr. Lisa Cooper’s research interests include the history of archaeological exploration and archaeological practice in “Greater Mesopotamia” (ancient Iraq, Syria, Iran and Turkey), particularly in the early 20th century. She is currently part of the Central Zagros Archaeology Project in Iraqi Kurdistan. Dr. Cooper has also done extensive research into the life and work of the early 20th century English explorer and archaeologist Gertrude Bell, about whom she wrote in her book In Search of...

Introduction to Jupyter and Syzygy

Michael Lamoureux
An overview of the Jupyter project, including the PIMS Syzygy program, and how Jupyter can be used in the classroom.

Experimental study of the pre-gelation behaviour of composite prepreg : [supplementary material]

Caitlin Duffner
The attached file is a supplements to the author’s master’s thesis at https://circle.library.ubc.ca/handle/2429/72979

Macroscopic coherence as an emergent property in molecular nanotubes

Giuseppe Luca Celardo
Nanotubular molecular self-aggregates are characterized by a high degree of symmetry and they are fundamental systems for light-harvesting and energy transport. While coherent effects are thought to be at the basis of their high efficiency, the relationship between structure, coherence and functionality is still an open problem. We analyze natural nanotubes present in Green Sulfur Bacteria. We show that they have the ability to support macroscopic coherent states, i.e. delocalized excitonic states coherently spread over...

Autonomous entanglement engines: open questions raised by the use of the reset master equation

Géraldine Haack
Entanglement is a key phenomenon distinguishing quantum from classical physics, and is a paradigmatic resource enabling many applications of quantum information science. Generating and maintaining entanglement is therefore a central challenge. In the past years, with my colleagues in Geneva and Vienna, we have proposed a series of autonomous thermal machines that allow to generate in the steady-state regime quantum correlations between two or more quantum systems (that can be of arbitrary dimension) [1-3]. In...

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