Obtaining correct orbital ground states in ff electron systems using a nonspherical self-interaction corrected LDA+UU method

The electronic structure of lanthanide and actinide compounds is often characterized by orbital ordering of localized $f$-electrons. Density-functional theory (DFT) studies of such systems using the currently available LDA+$U$ method are plagued by significant orbital-dependent self-interaction, leading to erroneous orbital ground states. An alternative scheme that modifies the exchange, not Hartree, energy is proposed as a remedy. We show that our LDA+$U$ approach reproduces the expected degeneracy of $f^1$ and $f^2$ states in free ions and the correct ground states in solid PrO$_2$. We expect our method to be useful in studying compounds of $f$- and heavy-$d$ elements.Comment: 11 pages, 4 figure

Lagrangian reduction of discrete mechanical systems by stages

In this work we introduce a category of discrete Lagrange{Poincare systems £ β d and study some of its properties. In particular, we show that the discrete mechanical systems and the discrete dynamical systems obtained by the Lagrangian reduction of symmetric discrete mechanical systems are objects in We introduce a notion of symmetry group for objects of £ βd as well as a reduction procedure that is closed in the category Furthermore, under some conditions, we show that the reduction in two steps (first by a closed normal subgroup of the symmetry group and then by the residual symmetry group) is isomorphic in LPd to the reduction by the full symmetry group.Facultad de Ciencias Exacta

Lagrangian reduction of forced discrete mechanical systems

In this paper we propose a process of Lagrangian reduction and reconstruction for symmetric discrete-time mechanical systems acted on by external forces, where the symmetry group action on the configuration manifold turns it into a principal bundle. We analyze the evolution of momentum maps and Poisson structures under different conditions

Chemo-Archaeological Downsizing in a Hierarchical Universe: Impact of a Top Heavy IGIMF

We make use of a semi-analytical model of galaxy formation to investigate the origin of the observed correlation between [a/Fe] abundance ratios and stellar mass in elliptical galaxies. We implement a new galaxy-wide stellar initial mass function (Top Heavy Integrated Galaxy Initial Mass Function, TH-IGIMF) in the semi-analytic model SAG and evaluate its impact on the chemical evolution of galaxies. The SFR-dependence of the slope of the TH-IGIMF is found to be key to reproducing the correct [a/Fe]-stellar mass relation. Massive galaxies reach higher [a/Fe] abundance ratios because they are characterized by more top-heavy IMFs as a result of their higher SFR. As a consequence of our analysis, the value of the minimum embedded star cluster mass and of the slope of the embedded cluster mass function, which are free parameters involved in the TH-IGIMF theory, are found to be as low as 5 solar masses and 2, respectively. A mild downsizing trend is present for galaxies generated assuming either a universal IMF or a variable TH-IGIMF. We find that, regardless of galaxy mass, older galaxies (with formation redshifts > 2) are formed in shorter time-scales (< 2 Gyr), thus achieving larger [a/Fe] values. Hence, the time-scale of galaxy formation alone cannot explain the slope of the [a/Fe]-galaxy mass relation, but is responsible for the big dispersion of [a/Fe] abundance ratios at fixed stellar mass.We further test the hyphothesis of a TH-IGIMF in elliptical galaxies by looking into mass-to-light ratios, and luminosity functions. Models with a TH-IGIMF are also favoured by these constraints. In particular, mass-to-light ratios agree with observed values for massive galaxies while being overpredicted for less massive ones; this overprediction is present regardless of the IMF considered.Comment: 24 pages, 15 figures, 2 tables. (Comments most welcome). Summited to MNRA

Prisoners’ perceived violence and hair regulation in Hong Kong prisons : gender-based differences

Hair regulation is an essential policy for maintaining hygiene, security, and discipline in correctional institutions. However, the implementation of any hair-regulating policy should include a consideration of gender needs and differences. This study investigated Chinese prisoners’ perceived influence of hairstyles on their behavioral responses. Data were collected by means of a self-administered questionnaire survey from 500 male and 500 female prisoners in 11 correctional institutions of Hong Kong, China. Descriptive analyses and chi-square tests were used to explore the perceived violence of prisoners and gender differences. Mediation analysis was adopted to examine the prisoners’ perceived behavioral responses and mental and psychological well-being under different hairstyle situations, using self-esteem, procedural fairness, and negative emotional responses as mediators. The study found that male prisoners are inherently more tensive than the female group in terms of violent proclivities. In addition, perceived violent behavior is associated with hairstyle, and the influence path is gender related. Restrictive hair regulations that do not address unique social and cultural meanings and gender differences would decrease male prisoners’ self-esteem, while increasing all prisoners’ negative emotional responses and reducing their perceived procedural fairness. To maintain security inside institutions, we recommend short hair for male prisoners and long hair for female prisoners in Chinese prisons. Given that many prisons in Asian and African nations have an authoritarian style of governance similar to that of China, this study is of considerable international relevance

The Neural Basis of Social Cognition in Typically Developing Children and Its Relationship to Social Functioning

Theory of mind (ToM), the ability to think about the perspectives, beliefs, and feelings of another, develops throughout childhood and adolescence and is an important skill for social interactions. This study examines neural activity in typically developing children during a novel ToM task – the Movie Mentalizing Task– and tests its relations to ToM behavioral performance and social functioning. In this fMRI task, children ages 8–13years (N=25) watched a brief movie clip and were asked to predict a character’s mental state after a social interaction. Engaging in the Movie Mentalizing Task activated the ToM neural network. Moreover, greater neural activity in the ToM network, including the superior temporal gyrus and inferior frontal gyrus, was associated with better behavioral performance on independent ToM tasks and was related to better social functioning, though these results do not survive correction for multiple comparisons. Results offer a new affective theory of mind task for children in the scanner that robustly recruits activity in theory of mind regions

Lagrangian reduction of discrete mechanical systems by stages

In this work we introduce a category of discrete Lagrange{Poincare systems £ β d and study some of its properties. In particular, we show that the discrete mechanical systems and the discrete dynamical systems obtained by the Lagrangian reduction of symmetric discrete mechanical systems are objects in We introduce a notion of symmetry group for objects of £ βd as well as a reduction procedure that is closed in the category Furthermore, under some conditions, we show that the reduction in two steps (first by a closed normal subgroup of the symmetry group and then by the residual symmetry group) is isomorphic in LPd to the reduction by the full symmetry group.Facultad de Ciencias Exacta

Studi Bentuk dan Ruang Deain Pertamanan Tradisional Peninggalan Kerajaan-Kerajaan Di Bali

Abstract Raja-raja Bali telah berperan menata alam binaan, dalam bentuk karya-kaya desain pertamanan.Bentuk dan struktur desain taman peninggalan kerajaan Bali kuna: Unsur air; Kolam; Pancuran. Sedangkan bentuk dan struktur desain taman peninggalan Kerajaan Klungkung (Bali madya): Unsur air; Kolam; Bangunan di tengah kolam; Pondasi berbentuk penyu; Arca (naga, kepala penyu) di bawah badan bangunan. Bentuk ruang taman peninggalan kerajaan-kerajaan yang diteliti berpola geometris segi empat panjang. Bentuk dan dimensi ruangnya tidak sama. Konsep ruangnya berorientasi pada kondisi lokal di Bali (gunung – matahari terbit), hirarki ruang “alam atas” dan “alam bawah”, serta pola ruang “teritorial” khusus. Filosofi desain taman peninggalan Bali kuna menekankan fungsi pembersihan jasmani dan rokhani. Sedangkan konsep filosofi taman peninggalan kerajaan Bali Madya mengacu pada falsafah “Pemutaran Mandhara Giri di Ksirarnawa”. Taman peninggalan kerajaan-kerajaan di Bali dapat dikembangkan ke dalam desain taman modern, sesuai dengan konteks zaman (rekontekstualisasi), tanpa meninggalkan makna aslinya. Desain taman tradisional Bali, memiliki keunggulan lokal yang dapat bersaing di era globalisasi. Kata-kata Kunci: Bentuk, Struktur, Ruang, Filosofi, Rekontekstualisasi

Analyses of a novel SCN5A mutation (C1850S): conduction vs. repolarization disorder hypotheses in the Brugada syndrome

Aims Brugada syndrome (BrS) is characterized by arrhythmias leading to sudden cardiac death. BrS is caused, in part, by mutations in the SCN5A gene, which encodes the sodium channel alpha-subunit Nav1.5. Here, we aimed to characterize the biophysical properties and consequences of a novel BrS SCN5A mutation. Methods and results SCN5A was screened for mutations in a male patient with type-1 BrS pattern ECG. Wild-type (WT) and mutant Nav1.5 channels were expressed in HEK293 cells. Sodium currents (INa) were analysed using the whole-cell patch-clamp technique at 37°C. The electrophysiological effects of the mutation were simulated using the Luo-Rudy model, into which the transient outward current (Ito) was incorporated. A new mutation (C1850S) was identified in the Nav1.5 C-terminal domain. In HEK293 cells, mutant INa density was decreased by 62% at −20 mV. Inactivation of mutant INa was accelerated in a voltage-dependent manner and the steady-state inactivation curve was shifted by 11.6 mV towards negative potentials. No change was observed regarding activation characteristics. Altogether, these biophysical alterations decreased the availability of INa. In the simulations, the Ito density necessary to precipitate repolarization differed minimally between the two genotypes. In contrast, the mutation greatly affected conduction across a structural heterogeneity and precipitated conduction block. Conclusion Our data confirm that mutations of the C-terminal domain of Nav1.5 alter the inactivation of the channel and support the notion that conduction alterations may play a significant role in the pathogenesis of Br

LIGHT PATTERN, THE LABYRINTH OF MASSIVE SPACE

This study aims to find and demonstrate the "intermingle art project Light Pattern" based on fine art performances to answer the lack of contemporary research-based on performance art. The problem formulated in this creation is what kind of psychological situation and conditions of the intermingle form between drawing on novels and artists. The ideas or praxis concepts are expressed from intermingle drawing on novels. The form of presentation of this intermingle art project to certain public spaces. The theory used in this study is significant form, aesthetic relational and presentation theory, these theories are very supportive in the research. Data collection through participatory observation, interviews, and literature studies. An interactive analysis model is used in presenting data and presenting the results of the analysis informally and formally. The results of the study showed that each artist create a different perspective in accordance with the field of art in which he was engaged. Various forms of art emerge: visual, verbal, sound, and kinesthetic contemporary art. Presented with the shuttle layers in the form of art. Keywords: Light Pattern, Performing Visual Arts, Intermingle