LargeGraph

Many out-of-GPU-memory systems are recently designed to support iterative processing of large-scale graphs. However, these systems still suffer from long time to converge because of inefficient propagation of active vertices’ new states along graph paths. To efficiently support out-of-GPU-memory graph processing, this work designs a system LargeGraph . Different from existing out-of-GPU-memory systems, LargeGraph proposes a dependency-aware data-driven execution approach , which can significantly accelerate active vertices’ state propagations along graph paths with low data access cost and also high parallelism. Specifically, according to the dependencies between the vertices, it only loads and processes the graph data associated with dependency chains originated from active vertices for smaller access cost. Because most active vertices frequently use a small evolving set of paths for their new states’ propagation because of power-law property, this small set of paths are dynamically identified and maintained and efficiently handled on the GPU to accelerate most propagations for faster convergence, whereas the remaining graph data are handled over the CPU. For out-of-GPU-memory graph processing, LargeGraph outperforms four cutting-edge systems: Totem (5.19–11.62×), Graphie (3.02–9.41×), Garaph (2.75–8.36×), and Subway (2.45–4.15×).

Illegal Control Over the Territory in International Law and the Status of Donbas Determination

Total rejection of the aggression and territory occupation in the international law leads to their hybrid and concealed forms using gangs and mercenaries, proclaiming new “states” etc. These activities constitute serious threat to international security, can cause and already cause the fragmentation of states, anarchy, criminalization of politics, new forms of expansionism and so on. The authors of the article generalize the forms of illegal control over the territory in international law and their application considering the status of Donbas determination. International law for more than a century provides for the possibility of separate regulation of the sovereignty and legal rights of the state to the territory, on the one hand, and the implementation of the regime of illegal control over the territory – on the other. Authors argue that in the modern sense, primarily developed by doctrine and courts, illegal control over the territory can be considered as a legal regime, one of the forms of which is occupation, while others are defined as effective, overall, general, de facto control and related to undisclosed actions and informal means used by the aggressor states. This regime is characterized by the exercise of power over the territory by the will of a foreign state, and the forms of implementation of the regime differ depending on whether such a will is officially recognized or concealed. The transformation of international humanitarian law after the Second World War erased the boundaries between recognized and officially unrecognized occupation. But unlike occupation, the fact of which may be obvious, the fact of effective or other control over the territory requires the determination by judicial authorities. The qualification of illegal control by the Russian Federation of the Donbas in national and international law is ambiguous. The authors argue that the full recognition of the international armed conflict between Ukraine and Russia in Donbas, as well as Russia’s illegal control over latter should be expected in the process of consideration of a number of cases in the international judicial institutions.

Popular Legitimacy

The American and French Revolutions derived from—and promoted—a concept of legitimacy based on popular consent and the public will. This concept displaced the practice of relying on dynasticism, the prescriptive rights of hereditary monarchs. As a result, plebiscites have taken the place of dynastic marriages as mechanisms for the legitimization of transfers of sovereignty. Noteworthy examples include decisions in the unification of Italy and in the European settlement of 1919–1920. Plebiscites have not, however, been conducted when Great Powers have ruled them out—for instance, France’s rejection of a plebiscite concerning Alsace-Lorraine after the First World War. Popular legitimacy raises questions about the defining characteristics of a self-governing nation—its size and capacity for self-defence, its language and history, and the allegiance choices of its citizens. Disputes over minority rights may raise questions about national identity and cohesion, including the possible founding of new states seceding from established countries. In some cases, such as Israel, Pakistan, and Saudi Arabia, religion is a fundamental source of identity and state legitimacy.

Playces: Architecture That Affords Play

<p>This research portfolio examines the nature of play and its relationship with architecture. It researches how play is afforded by, and affords, the design of public space, rendering them places of play: Playces. Although play is an important component of everyone’s lives, this research portfolio focuses on adult play. Like art, music, dance and literature, play is a way of engaging and expressing our being in the world. It is a pleasurable activity that also serves a biological function. Play nurtures the mind and challenges our physical capabilities. It is a critical component of human development. Play is largely associated with childhood but maintaining a sense of playfulness is also a critical component of fulfilling adult lives. As we become adults, however, we tend to devalue the significance of play, relegating it to specific times and setting. We usually play in structured settings, solely dedicated to playing, unlike when we were children; we make very little distinction between play and other activities. A person’s propensity to play depends not only on their physiological and emotional state, but also on their environment. Play, unfortunately, is rarely encouraged in urban spaces and even more seldom is it integrated in the design of architecture. As a result, it has generated a society of disconnection, comfortable in the predictability of their surroundings. Architecture has the potential to design for a ludic environment. It can establish a new and ever-changing relationship with adults and re-engage them to the built environment through design for play. A playful framework can allow spaces to inspire new states of mind and detach adults from their everyday reality. Spaces can invite new relationship with the built environment, one of participation and ambiguity, allowing social interactions to thrive, routine to be interrupted and adults to become spontaneously engaged. These areas are investigated following a research through design methodology to provide an understanding of the qualities that can pave way for the ideas of playful urban design. Through a design as research methodology, Playces aims to discover how it can design a play-space that is not specifically created to accommodate play but invites players to appropriate that space through play. Play is explored at four designs phases, which implement a range of playful design techniques. Phase one serves as a preliminary exploration of play through the design of an installation. Phases two and three explore how architecture can possess the same playful interaction in the magnitude of a medium-scale and large-scale public space. The final design is a journey through space where conditions essential for play become evident.</p>

Playces: Architecture That Affords Play

<p>This research portfolio examines the nature of play and its relationship with architecture. It researches how play is afforded by, and affords, the design of public space, rendering them places of play: Playces. Although play is an important component of everyone’s lives, this research portfolio focuses on adult play. Like art, music, dance and literature, play is a way of engaging and expressing our being in the world. It is a pleasurable activity that also serves a biological function. Play nurtures the mind and challenges our physical capabilities. It is a critical component of human development. Play is largely associated with childhood but maintaining a sense of playfulness is also a critical component of fulfilling adult lives. As we become adults, however, we tend to devalue the significance of play, relegating it to specific times and setting. We usually play in structured settings, solely dedicated to playing, unlike when we were children; we make very little distinction between play and other activities. A person’s propensity to play depends not only on their physiological and emotional state, but also on their environment. Play, unfortunately, is rarely encouraged in urban spaces and even more seldom is it integrated in the design of architecture. As a result, it has generated a society of disconnection, comfortable in the predictability of their surroundings. Architecture has the potential to design for a ludic environment. It can establish a new and ever-changing relationship with adults and re-engage them to the built environment through design for play. A playful framework can allow spaces to inspire new states of mind and detach adults from their everyday reality. Spaces can invite new relationship with the built environment, one of participation and ambiguity, allowing social interactions to thrive, routine to be interrupted and adults to become spontaneously engaged. These areas are investigated following a research through design methodology to provide an understanding of the qualities that can pave way for the ideas of playful urban design. Through a design as research methodology, Playces aims to discover how it can design a play-space that is not specifically created to accommodate play but invites players to appropriate that space through play. Play is explored at four designs phases, which implement a range of playful design techniques. Phase one serves as a preliminary exploration of play through the design of an installation. Phases two and three explore how architecture can possess the same playful interaction in the magnitude of a medium-scale and large-scale public space. The final design is a journey through space where conditions essential for play become evident.</p>

Electroweak symmetry non-restoration from dark matter

Restoration of the electroweak symmetry at temperatures around the Higgs mass is linked to tight phenomenological constraints on many baryogenesis scenarios. A potential remedy can be found in mechanisms of electroweak symmetry non-restoration (SNR), in which symmetry breaking is extended to higher temperatures due to new states with couplings to the Standard Model. Here we show that, in the presence of a second Higgs doublet, SNR can be realized with only a handful of new fermions which can be identified as viable dark matter candidates consistent with all current observational constraints. The competing requirements on this class of models allow for SNR at temperatures up to ∼TeV, and imply the presence of sub-TeV new physics with sizable interactions with the Standard Model. As a result this scenario is highly testable with signals in reach of next-generation collider and dark matter direct detection experiments.

Ukraina: 30 lat bez ZSRR

The collapse of the Soviet Union was a momentous event for the entire world, but it was Soviet citizens for whom it was of the greatest importance. The fall of the USSR changed the geopolitical and economic map of the world and led to the emergence of fifteen new states. An independent Ukraine has become a significant component of this new geopolitical reality. The dissolution of the USSR gave the citizens of Ukraine a chance to build a sovereign state, consistent with the national interest, the state which could independently pursue its strategic goals in the area of domestic and foreign policy. Thirty years have passed since those events, which is a long enough time period to analyse changes made and to define how Ukraine has taken advantage of its historic opportunity. This paper examines the political and economic transformation of Ukraine, as well as the evolution of its foreign policy. The article also questions whether it is appropriate to compare the post-communist development of Ukraine to certain Central European countries. It also highlights the current attitude of the Ukrainian society towards the collapse of the USSR and to the Soviet past of this country.

Dark photon bounds in the dark EFT

Dark photons are massive abelian gauge bosons that interact with ordinary photons via a kinetic mixing with the hypercharge field strength tensor. This theory is probed by a variety of different experiments and limits are set on a combination of the dark photon mass and kinetic mixing parameter. These limits can however be strongly modified by the presence of additional heavy degrees of freedom. Using the framework of dark effective field theory, we study how robust are the current experimental bounds when these new states are present. We focus in particular on the possible existence of a dark dipole interaction between the Standard Model leptons and the dark photon. We show that, under certain assumptions, the presence of a dark dipole modifies existing supernovæ bounds for cut-off scales up to $$ \mathcal{O} $$ O (10–100 TeV). On the other hand, terrestrial experiments, such as LSND and E137, can probe cut-off scales up to $$ \mathcal{O} $$ O (3 TeV). For the latter experiment we highlight that the bound may extend down to vanishing kinetic mixing.

Anomaly-free Abelian gauge symmetries with Dirac seesaws

We perform a systematic analysis of Standard Model extensions with an additional anomaly-free gauge U(1) symmetry, to generate tree-level Dirac neutrino masses. An anomaly-free symmetry demands nontrivial conditions on the charges of the unavoidable new states. An intensive scan was performed, looking for solutions generating neutrino masses by the type-I and type-II tree-level Dirac seesaw mechanism, via operators with dimension 5 and 6, that correspond to active or dark symmetries. Special attention was paid to the cases featuring no extra massless chiral fermions or multicomponent dark matter with unconditional stability.