Miracle-dz/UniFAR-FTUs huggingface dataset:
The Tensor Networks Anthology: Simulation techniques for many-body quantum lattice systems

We present a compendium of numerical simulation techniques, based on tensor network methods, aiming to address problems of many-body quantum mechanics on a classical computer. The core setting of this anthology are lattice problems in low spatial dimension at finite size, a physical scenario where tensor network methods, both Density Matrix Renormalization Group and beyond, have long proven to be winning strategies. Here we explore in detail the numerical frameworks and methods employed to deal with low-dimensional physical setups, from a computational physics perspective. We focus on symmetries and closed-system simulations in arbitrary boundary conditions, while discussing the numerical data structures and linear algebra manipulation routines involved, which form the core libraries of any tensor network code. At a higher level, we put the spotlight on loop-free network geometries, discussing their advantages, and presenting in detail algorithms to simulate low-energy equilibrium states. Accompanied by discussions of data structures, numerical techniques and performance, this anthology serves as a programmer’s companion, as well as a self-contained introduction and review of the basic and selected advanced concepts in tensor networks, including examples of their applications.
Social Change-based Identity Negotiation: Case of “Cina Benteng” and Indigenous Community in Kalipasir Tangerang, Banten

Chinese and indigenous people in Kalipasir have lived together for centuries. Although they experienced various social changes due to changes in spatial planning, job opportunities, and cultural recognition, they still lives in harmony by negotiating its identity. Applying qualitative research this study will reveal: what factors drive the negotiation of the identity of the people of Kampung Kalipasir? How did the identity negotiations in Kalipasir Village take place? and what impact does this identity negotiation have on people's attitudes to social change? This study reveals that identity negotiations are driven by factors of cultural diversity, economic equality, and the presence of a common enemy. The form of identity negotiation that occurs is manifested in three behaviors, namely tolerance, prioritizing togetherness, and maintaining tradition. The consequences of this identity negotiation led to a multicultural attitude, prioritizing deliberation, and rejecting exclusivity. This finding shows that a multicultural society can develop in response to social change without having to become a hybrid society by negotiating a tolerant identity and building togetherness while still maintaining traditional values.
Evolution of Molecular Abundance in Protoplanetary Disks

We investigate the evolution of molecular abundance in quiescent protoplanetary disks that are presumed to be around weak-lined T Tauri stars. In the region of surface density less than 102 g cm-2 (distance from the star ≳10 AU in the minimum-mass solar nebula), cosmic rays are barely attenuated even in the midplane of the disk and produce chemically active ions such as He+ and H+3. Through reactions with these ions, CO and N2 are finally transformed into CO2, NH3, and HCN. In the region where the temperature is low enough for these products to freeze onto grains, a considerable amount of carbon and nitrogen is locked up in the ice mantle and is depleted from the gas phase in a timescale of ≲3 × 106 yr. Oxidized (CO2) ice and reduced (NH3 and hydrocarbon) ice naturally coexist in this part of the disk. The molecular abundance both in the gas phase and in the ice mantle varies significantly with the distance from the central star.
Evektifitas Pembelajaran Bahasa Indonesia Materi Paragraf Deskripsi dan Eksposisi Saat Pandemi Covid-19 Melalui Aplikasi Youtube

Keyword: evektivitas, paragraf deskripsi dan eksposisi, covid-19, youtube Penelitian ini bertujuan untuk mengetahui sebarapa efektif penggunaan youtube terhadap pembelajaran bahasa Indonesia pada materi paragraf deskripsi dan eksposisi disaat pandemi covid-19 berlangsung dikarenakan pada masa covid-19 saat ini sekolah/universitas tidak melakukan tatap muka. Penelitian ini menggunakan metode kuantitatif dengan menyebarkan angket untuk siswa/mahasiswa diberbagai wilayah di Indonesia. Hasil dari penelitian ini adalah penggunaan youtube pada pembelajaran bahasa Indonesia materi paragraf deskripsi dan eksposisi efektif digunakan dengan rata-rata 54 dengan nilai ideal 71. BASINDO : Jurnal Kajian Bahasa, Sastra Indonesia, dan Pembelajarannya Volume 6 Nomor 1, 2022 Journal homepage : http://journal2.um. ac.id/index.php/basindo
Early observations of the MHONGOOSE galaxies: getting ready for MeerKAT

We present early observations of 20 galaxies in the MHONGOOSE survey galaxies using KAT-7, the GBT, and MeerKAT. We present the best calibrators for five of the MHONGOOSE galaxies observed with the KAT-7, and search for signs of gas accretion in the GBT data, down to 3 sigma column density levels of 2.2 x 10(18) cm(-2) over a 20 km s(-1) line width, but identify none. Using the KAT-7 and MeerKAT data, we have derived rotation curves and mass models for NGC 3621 and NGC 7424, respectively, out to an unprecedented extent. As a precursor to the SKA, the MeerKAT telescope combines both a high spatial resolution and a large field of view, necessary to map the extended neutral hydrogen in local galaxies. The mass models of the two galaxies were constructed for both the Dark Matter (DM) models (the pseudo-isothermal model and the Navarro-Frenk-White model) and MOND. Overall, we find that the DM models provide a better fit than MOND to the galaxies' rotation curves. Furthermore, the pseudo-isothermal model is found to be the most consistent with the observations.
Validation of the Global Lung Function Initiative 2012 Spirometry Reference Values in a Healthy Italian Working Population

Background: Several studies showed important differences in the interpretation of spirometry based on different reference values, in particular by comparing European Respiratory Society (ERS) 1993 and Global Lung Function Initiative (GLI) 2012. The validation of new reference values in local populations is essential before they can be used in an appropriate manner. This study aimed to investigate the fit of GLI reference values in a healthy Italian working population. Methods: Spirometry data were collected in 1355 workers during their health surveillance medical examination conducted for exposure to chemical and biological risk factors. A single portable spirometer that met the ATS/ERS recommendations for occupational testing was used and calibrated daily. Results: Average z-score were −0.13 (with a median of −0.17), −0.25 (with a median of −0.24), and 0.18 (with a median of 0.17) for FEV1, FVC, and FEV1/FVC ratio, respectively. Considering only the normal-weighted workers, the average z-scores were −0.07 (with a median of −0.16), −0.15 (with a median of −0.16), and 0.07 (with a median of 0.02) for FEV1, FVC, and FEV1/FVC ratio, respectively. Conclusions: GLI 2012 reference values fit the Italian data satisfactorily, resulting as more accurate than ERS 1993, especially in women, normal-weighted subjects, aged 30−50 years, and for height < 165 cm.
Coverings and packings of complete directed graphs by odd circuits

Abstract Let DKv denote the complete directed graph with v vertices, covering (packing) number C(v, m) (P (v, m)) of DKv is a minimum (maximum) number of covering (packing) DKv by m-circuits. In this paper, determination of C(v,m) is reduced to the case m + 7 ≤ v ≤ 2m – 4 and 2m + 5 ≤ v ≤ 3m – 4 for any odd integer m ≥ 15. Determination of P (v, m) is reduced to the case and for any odd integer m ≥ 15, under the conditions of theorem 1.3. C(v,m) and P(v,m) are determined when v ≥ m and m = 15, 17.
Revealing the 3D structure of graphene defects

We demonstrate insights into the three-dimensional (3D) structure of defects in graphene, in particular grain boundaries, obtained via a new approach using two transmission electron microscopy images recorded at different angles. The structure is revealed through an optimization process where both the atomic positions as well as the simulated imaging parameters are iteratively changed until the best possible match to the experimental images is found. We first demonstrate that this method works using an embedded defect in graphene that allows direct comparison to the computationally predicted 3D shape. We then apply the method to a set of grain boundary structures with misorientation angles spanning nearly the whole available range (2.6°–29.8°). The measured height variations at the boundaries reveal a strong correlation with the misorientation angle with lower angles resulting in stronger corrugation and larger kink angles. Our results allow for the first time a direct comparison to theoretical predictions for the corrugation at grain boundaries, revealing the measured kink angles are significantly smaller than the largest predicted ones.
Modelling compensated antiferromagnetic interfaces with MuMax3

We show how compensated antiferromagnetic interfaces can be implemented in the micromagnetic simulation program MuMax3. We demonstrate that we can model spin flop coupling as a uniaxial anisotropy for small canting angles and how we can take into account the exact energy terms for strong coupling between a ferromagnet and a compensated antiferromagnet. We also investigate athermal training in biaxial antiferromagnets and reproduce the training effect in a polycrystalline IrMn/CoFe bilayer.
The ALMA-PILS survey: 3D modeling of the envelope, disks and dust filament of IRAS 16293-2422

Context. The Class 0 protostellar binary IRAS 16293–2422 is an interesting target for (sub)millimeter observations due to, both, the rich chemistry toward the two main components of the binary and its complex morphology. Its proximity to Earth allows the study of its physical and chemical structure on solar system scales using high angular resolution observations. Such data reveal a complex morphology that cannot be accounted for in traditional, spherical 1D models of the envelope. Aims. The purpose of this paper is to study the environment of the two components of the binary through 3D radiative transfer modeling and to compare with data from the Atacama Large Millimeter/submillimeter Array. Such comparisons can be used to constrain the protoplanetary disk structures, the luminosities of the two components of the binary and the chemistry of simple species. Methods. We present ¹³CO, C¹⁷O and C¹⁸O J = 3–2 observations from the ALMA Protostellar Interferometric Line Survey (PILS), together with a qualitative study of the dust and gas density distribution of IRAS 16293–2422. A 3D dust and gas model including disks and a dust filament between the two protostars is constructed which qualitatively reproduces the dust continuum and gas line emission. Results. Radiative transfer modeling in our sampled parameter space suggests that, while the disk around source A could not be constrained, the disk around source B has to be vertically extended. This puffed-up structure can be obtained with both a protoplanetary disk model with an unexpectedly high scale-height and with the density solution from an infalling, rotating collapse. Combined constraints on our 3D model, from observed dust continuum and CO isotopologue emission between the sources, corroborate that source A should be at least six times more luminous than source B. We also demonstrate that the volume of high-temperature regions where complex organic molecules arise is sensitive to whether or not the total luminosity is in a single radiation source or distributed into two sources, affecting the interpretation of earlier chemical modeling efforts of the IRAS 16293–2422 hot corino which used a single-source approximation. Conclusions. Radiative transfer modeling of source A and B, with the density solution of an infalling, rotating collapse or a protoplanetary disk model, can match the constraints for the disk-like emission around source A and B from the observed dust continuum and CO isotopologue gas emission. If a protoplanetary disk model is used around source B, it has to have an unusually high scale-height in order to reach the dust continuum peak emission value, while fulfilling the other observational constraints. Our 3D model requires source A to be much more luminous than source B; LA ~ 18 L⊙ and LB ~ 3 L⊙.
A Convergent Parallel Mixed-Methods Study of Screen Time and Social Behaviors in Early Childhood

ABSTRACT Using a convergent parallel mixed methods design, the present study examined children’s screen time and social behaviors through parents’ perceptions. The participants were 113 children and their parents for the quantitative strand and 42 randomly selected parents for the qualitative strand of the study. Parents reported on children’s social behaviors and screen time in the quantitative strand, and semi-structured interviews were conducted with parents in the qualitative strand of the study. Quantitative data were analyzed using cluster analyses, and qualitative data were analyzed using an open-coding system; following that, the quantitative and qualitative results were collaboratively discussed. Using cluster analyses, children were categorized into two groups (positive and relatively social negative behaviors) that reflect their social behaviors during peer play context. Qualitative analyses identified parents’ perceptions of their children’s social behavior and screen time. Accordingly, qualitative results consistently supported the two groups categorized in the quantitative strand. In addition, parents’ use of screen-related strategies was related to children’s positive social behaviors. Findings from the current study suggest that considering children’s engagement with screen time may contribute to a greater understanding of children’s social behaviors.
Magnetospheric Truncation, Tidal Inspiral, and the Creation of Short-period and Ultra-short-period Planets

Sub-Neptunes around FGKM dwarfs are evenly distributed in log orbital period down to ∼10 days, but dwindle in number at shorter periods. Both the break at ∼10 days and the slope of the occurrence rate down to ∼1 day can be attributed to the truncation of protoplanetary disks by their host star magnetospheres at corotation. We demonstrate this by deriving planet occurrence rate profiles from empirical distributions of pre-main-sequence stellar rotation periods. Observed profiles are better reproduced when planets are distributed randomly in disks—as might be expected if planets formed in situ—rather than piled up near disk edges, as would be the case if they migrated in by disk torques. Planets can be brought from disk edges to ultra-short (<1 day) periods by asynchronous equilibrium tides raised on their stars. Tidal migration can account for how ultra-short-period planets are more widely spaced than their longer-period counterparts. Our picture provides a starting point for understanding why the sub-Neptune population drops at ∼10 days regardless of whether the host star is of type FGK or early M. We predict planet occurrence rates around A stars to also break at short periods, but at ∼1 day instead of ∼10 days because A stars rotate faster than stars with lower masses (this prediction presumes that the planetesimal building blocks of planets can drift inside the dust sublimation radius).
An asymptotic investigation of the stationary modes of instability of the boundary layer on a rotating disc

The paper investigates high-Reynolds-number stationary instabilities in the boundary layer on a rotating disc. The investigation demonstrates that, in addition to the inviscid mode found by Gregory, Stuart & Walker (Phil. Trans. R. Soc. Lond. A 248, 155 (1955)) at high Reynolds numbers, there is a stationary short-wavelength mode. This mode has its structure fixed by a balance between viscous and Coriolis forces and cannot be described by an inviscid theory. The asymptotic structure of the wave-number and orientation of this mode is obtained, and a similar analysis is given for the inviscid mode. The expansion procedure provides the capacity of taking non-parallel effects into account in a self-consistent manner. The inviscid solution of Gregory et al. is modified to take account of viscous effects. The expansion procedure used is again capable of taking non-parallel effects into account. The results obtained suggest why the inviscid approach of Gregory et al. should give a good approximation to the experimentally measured orientation of the vortices. The results also explain partly why the inviscid analysis should not give such a good approximation to the wavenumber of the vortices. The asymptotic analysis of both modes provides a starting point for the corresponding nonlinear problems.
CHEMICAL EVOLUTION OF THE UNIVERSE AT 0.7 < z < 1.6 DERIVED FROM ABUNDANCE DIAGNOSTICS OF THE BROAD-LINE REGION OF QUASARS

We present an analysis of Mg ii λ2798 and Fe ii UV emission lines for archival Sloan Digital Sky Survey (SDSS) quasars to explore the diagnostics of the magnesium-to-iron abundance ratio in a broad-line region cloud. Our sample consists of 17,432 quasars selected from the SDSS Data Release 7 with a redshift range of 0.72 < z < 1.63. A strong anticorrelation between the Mg ii equivalent width (EW) and the Eddington ratio is found, while only a weak positive correlation is found between the Fe ii EW and the Eddington ratio. To investigate the origin of these differing behaviors of Mg ii and Fe ii emission lines, we perform photoionization calculations using the Cloudy code, where constraints from recent reverberation mapping studies are considered. We find from calculations that (1) Mg ii and Fe ii emission lines are created at different regions in a photoionized cloud, and (2) their EW correlations with the Eddington ratio can be explained by just changing the cloud gas density. These results indicate that the Mg ii/Fe ii flux ratio, which has been used as a first-order proxy for the Mg/Fe abundance ratio in chemical evolution studies with quasar emission lines, depends largely on the cloud gas density. By correcting this density dependence, we propose new diagnostics of the Mg/Fe abundance ratio for a broad-line region cloud. In comparing the derived Mg/Fe abundance ratios with chemical evolution models, we suggest that α-enrichment by mass loss from metal-poor intermediate-mass stars occurred at z ∼ 2 or earlier.
Gut–lung axis

The intestinal microbiota is one of the most abundant of the human body biotopes. Its metabolic activity, as well as the antigenic composition, largely determine the metabolism and immunological status of the macroorganism, which, in turn, affect the local immunity of lung tissues. The pulmonary local immunity prevents the development of exogenous infections, opportunistic infections, and non-infectious diseases.The aim of the study was to identify the mechanisms of interaction of the intestinal microbiota with the components of the immune system and the pulmonary microflora, as well as the influence of intestinal microorganisms on the development of lung pathology. In this regard, the review presents data on how dysbiotic changes in the intestine affect the course of bronchial asthma, cystic fibrosis, acute respiratory distress syndrome, chronic obstructive pulmonary disease, and respiratory viral infections. The role of the intestinal microbiota in the formation of immunological resistance to Mycobacterium tuberculosis infection and maintenance of anti-oncogenic processes in lung tissues is considered.Conclusion. The gut microbiota contributes greatly to the development of respiratory conditions through immunological and metabolic mechanisms. A detailed study of these mechanisms will help understand the pathogenesis of lung diseases and identify points of application of pharmacological therapy.
The Impact of Galactic Disc Environment on Star-Forming Clouds

We explore the effect of different galactic disc environments on the properties of star-forming clouds through variations in the background potential in a set of isolated galaxy simulations. Rising, falling and flat rotation curves expected in halo dominated, disc dominated and Milky Way-like galaxies were considered, with and without an additional two-arm spiral potential. The evolution of each disc displayed notable variations that are attributed to different regimes of stability, determined by shear and gravitational collapse. The properties of a typical cloud were largely unaffected by the changes in rotation curve, but the production of small and large cloud associations was strongly dependent on this environment. This suggests that while differing rotation curves can influence where clouds are initially formed, the average bulk properties are effectively independent of the global environment. The addition of a spiral perturbation made the greatest difference to cloud properties, successfully sweeping the gas into larger, seemingly unbound, extended structures and creating large arm-interarm contrasts.
On the Progenitor System of V392 Persei

A discussion regarding the progenitor system of the nova and dwarf nova system V392 Persei using archival data from 2MASS and WISE. We find that the system is unlikely to contain a luminous red giant donor (i.e. a symbiotic system), but cannot exclude the presence of a lower luminosity red giant or a sub-giant donor. The similarity of the SED of the quiescent V392 Per to that of GK Persei is noted.
Consequences of the Reproductive Effort of Dioecious Taxus baccata L. Females in a Generative Bud Removal Experiment—Important Role of Nitrogen in Female Reproduction

Dioecious species differ in the pattern and intensity of male and female reproductive investments. We aimed to determine whether female shoots deprived of generative buds show biochemical features, indicating their less-pronounced reproductive effort. For this purpose, the same branches of mature Taxus baccata females were deprived of generative organs. In the second and third years of the experiment, measurements were made in every season from the control and bud-removed shoots of females and control males. Bud removal caused an increase in nitrogen concentration almost to the level detected in the needles of male specimens, but only in current-year needles. Moreover, differences between male and control female shoots were present in the C:N ratio and increment biomass, but they disappeared when bud removal was applied to females. Additionally, between-sex differences were observed for content of phenolic compounds, carbon and starch, and SLA, independent of the female shoot reproductive effort. The study revealed that nitrogen uptake in seeds and arils may explain the lower nitrogen level and consequently the lower growth rate of females compared to males. At the same time, reproduction did not disturb carbon level in adjacent tissues, and two hypotheses explaining this phenomenon have been put forward.