Woody species distribution across a savanna-dry forest soil gradient in the Brazilian Cerrado

Although richness and distribution of woody species in the Cerrado physiognomies have been extensively studied, the shifts of woody species from savanna physiognomies to dry forests have not yet been addressed. Here, we investigate the effect of soil physical-chemical traits on the woody species turnover between adjacent cerrado stricto sensu and dry forest physiognomies. Woody species were surveyed, and soil and topographic variables measured, in 30 10×40 m plots systematically distributed, with 15 plots in each physiognomy. We found a spatially structured distribution of woody species, and differences of soil traits between cerrado stricto sensu and dry forest areas, mainly related to the aluminum saturation, base saturation, and available phosphorus. Aluminum saturation increased toward the savanna area, while base saturation increased toward the dry forest. Most woody species predominated in one physiognomy, such as Callisthene major in the cerrado stricto sensu and Anadenanthera colubrina in the dry forest. Only 20% of the species were widely distributed across both physiognomies or, not often, restricted to the intermediary values of the soil gradient. General results indicate that contrasting soil traits between cerrado stricto sensu and dry forest produce a strongly spatially organized and sharp transition in terms of species distribution between these physiognomies.

Dialogical Structure Experience in Basic Design Studio at Online Education

In this study, the structure of the basic design studio that started with face-to-face education and had to end with online education due to the COVID-19 pandemic, which was set over Bakhtin's dialogic concept, is discussed. The three main components of the basic design studio; studio space, studio process and studio content and the combination of these components have changed in the transition from face-to-face education to online education. With these changes, dialogic relations are defined in the basic design studio's setup that extends from the face-to-face to the online education, and a structure that is shaped not as a sharp transition but as a flow has been developed. The basic design studio structure, which is shaped by the concept of dialogue, is presented as an approach proposal for online education, which is still ongoing and is expected to continue.

Crisis propagation in a heterogeneous self-reflexive DSGE model

We study a self-reflexive DSGE model with heterogeneous households, aimed at characterising the impact of economic recessions on the different strata of the society. Our framework allows to analyse the combined effect of income inequalities and confidence feedback mediated by heterogeneous social networks. By varying the parameters of the model, we find different crisis typologies: loss of confidence may propagate mostly within high income households, or mostly within low income households, with a rather sharp transition between the two. We find that crises are more severe for segregated networks (where confidence feedback is essentially mediated between agents of the same social class), for which cascading contagion effects are stronger. For the same reason, larger income inequalities tend to reduce, in our model, the probability of global crises. Finally, we are able to reproduce a perhaps counter-intuitive empirical finding: in countries with higher Gini coefficients, the consumption of the lowest income households tends to drop less than that of the highest incomes in crisis times.

Inflation is always semi-classical: diffusion domination overproduces Primordial Black Holes

We use the Hamilton-Jacobi (H-J) formulation of stochastic inflation to describe the evolution of the inflaton during a period of Ultra-Slow Roll (USR), taking into account the field's velocity and its gravitational backreaction. We demonstrate how this formalism allows one to modify existing slow-roll (SR) formulae to be fully valid outside of the SR regime. We then compute the mass fraction, β, of Primordial Black Holes (PBHs) formed by a plateau in the inflationary potential. By fully accounting for the inflaton velocity as it enters the plateau, we find that PBHs are generically overproduced before the inflaton's velocity reaches zero, ruling out a period of free diffusion or even stochastic noise domination on the inflaton dynamics. We also examine a local inflection point and similarly conclude that PBHs are overproduced before entering a quantum diffusion dominated regime. We therefore surmise that the evolution of the inflaton is always predominantly classical with diffusion effects always subdominant. Both the plateau and the inflection point are characterized by a very sharp transition between the under- and over-production regimes. This can be seen either as severe fine-tunning on the inflationary production of PBHs, or as a very strong link between the fraction β and the shape of the potential and the plateau's extent.

Alternative Methods of Dispute Resolution as a Measure to Reduce the Workload on Courts: A Comparative Legal Study (Part 2)

The paper considers alternative methods of dispute resolution as a measure to reduce the workload on the courts. At present, the need to reduce the workload on courts is quite acute in Russia. According to the members of the European Commission for the Efficiency of Justice (CEPEJ), a large workload on courts (and, accordingly, on judges) seriously affects the quality of justice and the timing of the consideration of cases. It should be noted that all judicial systems of the world without exception face this problem, but the statistics of the European Commission for the Efficiency of Justice (CEPEJ) shows that over the past few years the burden on courts and judges has significantly decreased in the EU countries.The authors summarize that foreign judicial practice has successfully tested working tools to reduce the burden on courts, which the Russian judicial system may well borrow. However, these tools require gradual development and elaboration given all Russian legal realities. A sharp transition to alternative dispute resolution may negatively affect the quality of dispute resolution in Russia. If the legislator restricts the ability of citizens to consider disputes in courts (for example, by increasing court fees), but at the same time alternative dispute resolution methods will remain at a low level of legal and social development (citizens’ distrust, weak legislative elaboration, etc.), then citizens will completely lose the platform for legal dispute resolution. It is quite possible that we will return to the criminal experience of the economy of the 1990s.

CTCF and cohesin promote focal detachment of DNA from the nuclear lamina

Lamina associated domains (LADs) are large genomic regions that are positioned at the nuclear lamina (NL). It has remained largely unclear what drives the positioning and demarcation of LADs. Because the insulator protein CTCF is enriched at LAD borders, it was postulated that CTCF binding could position a subset of LAD boundaries, possibly through its function in stalling cohesin and hence preventing cohesin to invade into the LAD. To test this, we mapped genome - NL interactions in mouse embryonic stem cells after rapid depletion of CTCF and other perturbations of cohesin dynamics. CTCF and cohesin contribute to a sharp transition in NL interactions at LAD borders, whilst LADs are maintained after depletion of these proteins, also at borders marked by CTCF. CTCF and cohesin may thus reinforce LAD borders, but do not position these. CTCF binding sites within LADs are locally detached from the NL and enriched for accessible DNA and active histone modifications. Remarkably, even though NL positioning is strongly correlated with genome inactivity, this DNA remains accessible after the local detachment is lost following CTCF depletion. At a chromosomal scale, cohesin depletion and cohesin stabilization (depletion of the unloading factor WAPL) quantitatively affect NL interactions, indicative of perturbed chromosomal positioning in the nucleus. Finally, while H3K27me3 is locally enriched at CTCF-marked LAD borders, we find no evidence for an interplay between CTCF and H3K27me3 on NL interactions. Combined, these findings illustrate that CTCF and cohesin do not shape LAD patterns. Rather, these proteins mediate fine-tuning of NL interactions.

Alternative Methods of Dispute Resolution as a Measure to Reduce the Workload on Courts: A Comparative Legal Study (Part 1)

The paper considers alternative methods of dispute resolution as a measure to reduce the workload on the courts. At present, the need to reduce the workload on courts is quite acute in Russia. According to the members of the European Commission for the Efficiency of Justice (CEPEJ), a large workload on courts (and, accordingly, on judges) seriously affects the quality of justice and the timing of the consideration of cases. It should be noted that all judicial systems of the world without exception face this problem, but the statistics of the European Commission for the Efficiency of Justice (CEPEJ) shows that over the past few years the burden on courts and judges has significantly decreased in the EU countries. The authors summarize that foreign judicial practice has successfully tested working tools to reduce the burden on courts, which the Russian judicial system may well borrow. However, these tools require gradual development and elaboration given all Russian legal realities. A sharp transition to alternative dispute resolution may negatively affect the quality of dispute resolution in Russia. If the legislator restricts the ability of citizens to consider disputes in courts (for example, by increasing court fees), but at the same time alternative dispute resolution methods will remain at a low level of legal and social development (citizens’ distrust, weak legislative elaboration, etc.), then citizens will completely lose the platform for legal dispute resolution. It is quite possible that we will return to the criminal experience of the economy of the 1990s.

A sharp transition in quantum chaos and thermodynamics of mass deformed SYK model

We review our recent work [1] where we studied the chaotic property of the two coupled Sachdev-Ye-Kitaev systems exhibiting a Hawking-Page like phase transition. By computing the out-of-time-ordered correlator in the large NN limit by using the bilocal field formalism, we found that the chaos exponent of this model shows a discontinuous fall-off at the phase transition temperature. Hence in this model the Hawking-Page like transition is correlated with a transition in chaoticity, as expected from the relation between a black hole geometry and the chaotic behavior in the dual field theory.