Miracle-dz/UniFAR-FTUs huggingface dataset:
Quantitative chest tomography indexes are related to disease activity in systemic sclerosis: results from a cross-sectional study.

OBJECTIVES The aim of this study is to verify if there are correlations between quantitative chest tomography (QCT) indexes and disease activity (DA) in a cohort of patients with systemic sclerosis (SSc). METHODS SSc patients were assessed for DA and underwent high resolution chest tomography (CT). CT images were analysed with an operator-independent algorithm extracting the QCT indexes. DA assessment was conducted according to the EUSTAR index, where a score ≥2.5 indicates high DA (hDA). Correlations between clinical data and QCT indexes were investigated with the Spearman's test. The Mann-Whitney test assessed the distribution of the QCT indexes among the groups. Receiver operating characteristics (ROC) curve and linear regression analysis were conducted in order to identify the best cut-off value and contribution for each QCT index in assessing hDA in SSc patients. RESULTS Sixty patients (52 females, mean age 53.2 years, mean disease duration 5.3 years) were enrolled. A significant difference was found in QCT indexes distribution between patients with hDA and those with low DA. A mild strength correlation between QCT indexes and DA was observed. Once performed ROC curves and linear regression, Skewness on parenchymal lung <1.85 gave a significant contribution to the model in identifying subjects with hDA (p<0.001), showing sensitivity 79.5%, specificity 68.7%, and accuracy 76.6%. CONCLUSIONS QCT indexes correlate with SSc DA. These data introduce new possibilities for QCT application in clinical practice, especially in patient's follow-up. Moreover, QCT could be implemented in a new SSc DA score based on operator-independent parameters.
Optimal Sizing of Battery Energy Storage System for Grid Stability in Western Kenya

Increased penetration of variable renewable energy sources (vRES) in utility power grids in the East African region poses significant technical and economic challenges. Resource variability and intermittency, coupled with inverter interfaced grid connection, impact the utility power system’s steady-state and dynamic behavior, and introduce bi-directional power flow patterns. Traditional utility power grids are structured to balance the variability of power demand and resource availability using dispatchable generators, mainly fossil-fuel-based. Decarbonization, intermittency mitigation, and electric vehicles’(EV) rollout have put a premium on flexible grids and energy storage. Utility-scale battery energy storage systems (BESS) have emerged as an alternative in providing frequency and voltage regulation, emergency response and peak regulation, improving power system planning and operations in utilities. This paper presents an optimal sizing approach to provide BESS-based dispatchable power in Western Kenya. The objective was to size and site an optimal BESS in South Nyanza region to help mitigate the rampant load management experienced in the area especially during evening peak load times due to voltage instability and/or transmission line load capacity limitation. The simulation study was conducted on PSS/E with loss minimization and voltage profile variations per Kenya Grid Code requirements as the optimization criteria. Results showed that a BESS of approximately 45MW/180MWh adequately solves this problem and eliminates unserved energy during the evening peak period. Benefits include approximately 1. S4 GWh and Kshs. 1.60 billion in annual energy loss savings and fuel displacement costs respectively, optimal utilization of the geothermal resources and improved grid operation even with increased penetration of vRES.
One-step implementation of a multiqubit controlled-phase-flip gate (7 pages)

We propose a scheme for implementing quantum computation with N atoms trapped in a single-sided cavity. In our scheme, a multiqubit controlled-phase-flip (MCPF) gate as well as a quantum controlled phase flip gate is performed by only one step. The numerical simulations show that the protocol is robust to practical noise. In addition, the scheme can also be extended to achieve other multiqubit controlled unitary gates, and implement MCPF gate on atoms trapped in different cavities.
PENDAFTARAN HAK ATAS TANAH PADA PROGRAM PENDAFTARAN TANAH SISTEMATIS LENGKAP (PTSL)

Tujuan penelitian ini adalah Untuk mengetahui dan menganalisis mengapa Pemerintah menyelenggarakan Program Pendaftaran Tanah Sistematis Lengkap (PTSL) dan Untuk mengetahui dan menganalisis Bagaimana Efektivitas Program Pendaftaran Tanah Sistematis Lengkap (PTSL) dan Hambatan dalam Pelaksanaan Program Pendaftaran Tanah Sistematis Lengkap (PTSL). Metode penelitian yang digunakan adalah penelitian hukum empiris yaitu melihat bagaimana hukum dalam realitasnya di lapangan keberlakuan hukum dalam masyarakat dengan cara menjelaskan kenyataan-kenyataan atau keadaan obyek penelitian yang didapat dari hasil penelitian dilapangan.Pelaksanaan program pendaftaran tanah secara sistematis bertujuan untuk mewujudkan pemberian kepastian hukum dan perlindungan hukum Hak atas Tanah masyarakat Sserta mengurangi dan mencegah sengketa dan konflik pertanahan. Mengenai efektivitas program PTSL ini dapat dikatakan sangat efektif dalam membantun masyarakat serta memberikan manfaat yang besar. The purpose of this study is to find out and analyze why the Government organizes a Complete Systematic Land Registration Program (PTSL) and to find out and analyze the Effectiveness of the Complete Systematic Land Registration (PTSL) Program and the Barriers to the Implementation of a Complete Systematic Land Registration Program (PTSL). The research method used is empirical legal research, which is to see how the law is in reality in the field of law enforcement in society by explaining the facts or circumstances of the research object obtained from the results of research in the field. The systematic implementation of the land registration program aims to realize the provision of legal certainty and legal protection of community land rights as well as reducing and preventing land disputes and conflicts. Regarding the effectiveness of the PTSL program, it can be said that it is very effective in helping the community and providing great benefits.
External field effect on quantum features of radiation emitted by a QW in a microcavity

We consider a semiconductor quantum well in a microcavity driven by coherent light and coupled to a squeezed vacuum reservoir. By systematically solving the pertinent quantum Langevin equations in the strong coupling and low excitation regimes, we study the effect of exciton-photon detuning, external coherent light, and the squeezed vacuum reservoir on vacuum Rabi splitting and on quantum statistical properties of the light emitted by the quantum well. We show that the exciton-photon detuning leads to a shift in polariton resonance frequencies and a decrease in fluorescence intensity. We also show that the fluorescent light exhibits quadrature squeezing which predominately depends on the exciton-photon detuning and the degree of the squeezing of the input field.
Empirical metallicity-dependent calibrations of effective temperature against colours for dwarfs and giants based on interferometric data

We present empirical metallicity-dependent calibrations of effective temperature against colours for dwarfs of luminosity classes IV and V and for giants of luminosity classes II and III, based on a collection from the literature of about two hundred nearby stars with direct effective temperature measurements of better than 2.5 per cent. The calibrations are valid for an effective temperature range 3,100 - 10,000 K for dwarfs of spectral types M5 to A0 and 3,100 - 5,700 K for giants of spectral types K5 to G5. A total of twenty-one colours for dwarfs and eighteen colours for giants of bands of four photometric systems, i.e. the Johnson ($UBVR_{\rm J}I_{\rm J}JHK$), the Cousins ($R_{\rm C}I_{\rm C}$), the Sloan Digital Sky Survey (SDSS, $gr$) and the Two Micron All Sky Survey (2MASS, $JHK_{\rm s}$), have been calibrated. Restricted by the metallicity range of the current sample, the calibrations are mainly applicable for disk stars ([Fe/H]$\,\gtrsim\,-1.0$). The normalized percentage residuals of the calibrations are typically 2.0 and 1.5 per cent for dwarfs and giants, respectively. Some systematic discrepancies at various levels are found between the current scales and those available in the literature (e.g. those based on the infrared flux method IRFM or spectroscopy). Based on the current calibrations, we have re-determined the colours of the Sun. We have also investigated the systematic errors in effective temperatures yielded by the current on-going large scale low- to intermediate-resolution stellar spectroscopic surveys. We show that the calibration of colour ($g-K_{\rm s}$) presented in the current work provides an invaluable tool for the estimation of stellar effective temperature for those on-going or upcoming surveys.
Reconstructing the mass assembly history with kinematics and nuclear light profiles

Abstract In this contribution I show that by combining imaging and integral-field spectroscopy it is possible to unravel the internal structure of galaxies. In particular, I will present the photometric and kinematic evidence for discs linking them with stellar angular momentum content of early-type galaxies. Furthermore, I show that the existence of both fast rotators with core and slow rotators with core-less nuclear light profiles challenges the standard formation scenarios for fast and slow rotators and suggests new pathways of mass assembly.
Photometric and polarimetric observations of fast declining Type II supernovae 2013hj and 2014G

We present broadband photometric and polarimetric observations of two type II supernovae (SNe) 2013hj and 2014G. SN 2014G is a spectroscopically classified type IIL event, which we also confirm photometrically as its light curve show characteristic features (plateau slope of 2.55 mag (100 d)$ ^{-1} $ in V-band and duration of $ \sim77 $d) of a generic IIL SN. On the other hand SN 2013hj also shows high plateau decline rate of $ 1.5 $ mag (100 d)$ ^{-1} $ in V-band, similar to SNe IIL, but marginally lower than SNe IIL template light curves. Our high cadence photometric observations of SNe 2013hj and 2014G enables us to cover all characteristic phases up to radioactive tail of optical light curves. Broadband polarimetric observations reveal some polarization in SN 2013hj with subtle enhancement as SN evolves towards plateau end, however the polarization angle remains constant throughout the evolution. This characteristic is consistent with the idea that the evolving SN with recombining hydrogen envelope is slowly revealing more asymmetric central region of explosion. Modelling of bolometric light curve yields a progenitor mass of $ \sim11 $M$_{\odot}$ with a radius of $ \sim700 $R$_{\odot}$ for SN 2013hj, while for SN 2014G model estimated progenitor mass is $ \sim9 $M$_{\odot}$ with a radius of $ \sim630 $R$_{\odot}$, both having a typical energy budget of $ \sim2\times10^{51} $ erg.
BOOLE: A System to Compute Boolean Combinations of Sculptured Solids

We present a system to compute Boolean combinations of sculptured solids The surface of each solid is represented as a collection of trimmed and untrimmed spline surfaces and a connectivity graph Based on algorithms for trapezoidation of polygons partitioning of polygons using polygonal chains surface intersection of high degree spline surfaces and ray shooting we compute the boundaries of the resulting solids and its connectivity graph after the Boolean operation This system has been tested on a number of large scale industrial models and it performs well The system can also handle degenerate cases which occur frequently in practice
The digital rainbow: Digital determinants of health inequities

The widely used socioecological rainbow model from Dahlgren and Whitehead specifies determinants of health inequity on multiple hierarchical levels and suggests that these determinants may interact both within and between levels. At the time of its inception, digital determinants only played a minor role in tackling inequities in public health and were therefore not specifically considered. This has dramatically changed: From today's perspective, health inequities increasingly depend on digital determinants. In this article, we suggest adapting the Dahlgren-Whitehead model to reflect these developments. We propose a model that allows formulating testable hypotheses, interpreting research findings, and developing policy implications against the background of the global spread of digital technologies. This may facilitate the development of a new line of research and logic models for public health interventions in the digital age. Using the COVID-19 pandemic as a case study, we illustrate how the digitization of all aspects of life affects the different levels of determinants of health inequities in the Dahlgren–Whitehead model. In doing so, we deliberately argue for not introducing a separate digital sphere in its own right, but for understanding digitization as a phenomenon that permeates all levels of determinants of health inequities. As a result, we present a digital rainbow model that integrates Dahlgren and Whitehead's 1991 model with digital environments to identify current health promotion and research issues without changing the rainbow model's initial structure.
Case report of a left superior vena cava to left atrial connection treated with percutaneous covered stent placement

Abstract Background Persistent left superior vena cava (LSVC) with connection to the left atrium (LA) is a rare anomaly with serious clinical implications. Depending on the direction of flow through the intracardiac shunt, clinical presentation varies from cyanosis or paradoxical embolism to overt right heart failure. Case summary A 26-year-old man with repaired ventricular septal defect (VSD) during infancy presented with symptoms of progressive exercise intolerance. Cardiac imaging revealed a large defect at the posterior wall of the LSVC above its entry to the coronary sinus (CS), connecting the LSVC with the LA and resulting in diversion of pulmonary venous return to the CS. All pulmonary veins connect normally to the LA. The large left-to-right intracardiac shunt led to significant right ventricular dilation and tricuspid regurgitation. He underwent successful anatomical repair with transcatheter implantation of covered stent from LSVC to the CS, redirecting pulmonary venous return to the LA. At 1 year follow up, his exercise capacity had improved, and cardiac imaging showed complete seal of the LSVC defect without obstruction to pulmonary venous return. Discussion Our case is the first to our knowledge to report this unusual anatomic variant of LSVC to LA connection, and complete repair by transcatheter treatment. Previous case reports of other forms of LSVC to LA connection were treated with surgery or device occlusion without reconnection of LSVC. This case highlights the efficacy and safety of innovative percutaneous techniques in the management of complex congenital heart lesions. Meticulous procedural planning through 3D modelling and simulation is vital to mitigate the risks of these innovative procedures.
Chaotic translation semigroups

We characterize chaos for the translation semigroup, with a sector in the complex plane as index set, defined on a weighted function space. The results are stated in terms of the integrability of the weight function, and in terms of the existence of periodic points. We generalize previous results of [8, 15]. Some examples are also provided to complete the study.
IKT-approach to MHD turbulence

X iv :0 90 1. 24 54 v1 [ ph ys ic s. fl udy n] 1 6 Ja n 20 09 IKT-approach to MHD turbulence M. Tessarotto Department of Mathematics and Informatics, University of Trieste, Italy Consortium of Magneto-fluid-dynamics, University of Trieste, Italy Abstract An open issue in turbulence theory is related to the determination of the exact evolution equation for the probability density associated to the relevant (stochastic) fluid fields. Such an equation in the usual approaches to turbulence reproduces, at most in an approximate sense, the correct fluid equations. In this paper we present a statistical model which applies to an incompressible, resistive and quasi-neutral magnetofluid. The approach is based on the formulation of an inverse kinetic theory (IKT) for the full set of MHD equations appropriate for an incompressible, viscous, quasi-neutral, isentropic, isothermal and resistive magnetofluid. Basic feature of the new approach is that it relies on first principles including in particular the exact validity of the fluid equations and thus permits the determination of the correct evolution equation for the probability density. Specific application of the theory here considered concerns the case of statistically homogeneous and stationary MHD turbulence.
Lagrangian Coherent Structures and Transport in Two-Dimensional Incompressible Flows with Oceanographic and Atmospheric Applications

of a dissertation at the University of Miami. Dissertation supervised by Professor Michael Brown. No. of pages in text. (103) The Lagrangian dynamics of two-dimensional incompressible fluid flows is considered, with emphasis on transport processes in atmospheric and oceanic flows. The dynamical-systems-based approach is adopted; the Lagrangian motion in such systems is studied with the aid of Kolmogorov-Arnold-Moser (KAM) theory, and results relating to stable and unstable manifolds and lobe dynamics. Some nontrivial extensions of well-known results are discussed, and some extensions of the theory are developed. In problems for which the flow field consists of a steady background on which a time-dependent perturbation is superimposed, it is shown that transport barriers arise naturally and play a critical role in transport processes. Theoretical results are applied to the study of transport in measured and simulated oceanographic and atmospheric flows. Two particular problems are considered. First, we study the Lagrangian dynamics of the zonal jet at the perimeter of the Antarctic Stratospheric Polar Vortex during late winter/early spring within which lies the “ozone hole”. In this system, a robust transport barrier is found near the core of a zonal jet under typical conditions, which is responsible for trapping of the ozone-depleted air within the ozone hole. The existence of such a barrier is predicted theoretically and tested numerically with use of a dynamically-motivated analytically-prescribed model. The second, oceanographic, application considered is the study of the surface transport in the Adriatic Sea. The surface flow in the Adriatic is characterized by a robust threegyre background circulation pattern. Motivated by this observation, the Lagrangian dynamics of a perturbed three-gyre system is studied, with emphasis on intergyre transport and the role of transport barriers. It is shown that a qualitative change in transport properties, accompanied by a qualitative change in the structure of stable and unstable manifolds occurs in the perturbed three-gyre system when the perturbation strength exceeds a certain threshold. This behavior is predicted theoretically, simulated numerically with use of an analytically prescribed model, and shown to be consistent with a fully observationally-based model.
Mechanics of bipedal and quadrupedal locomotion on dry and wet granular media

The effectiveness of exploration robots is contingent upon their capability and efficiency to locomote on contorted and multifaceted terrains. Traditional wheeled robots do not suffice at overcoming such terrains and complications they introduce. The proposed work explores the performance of WhegRunner, a whegged (i.e., wheel‐legged) robotic platform used to examine the mechanics of running on granular media at different saturation levels. In particular, the effect of bipedal/quadrupedal gait, saturation level, stride length, and stride frequency on robot's forward body velocity and cost of transport (COT) was studied. To increment nominal stride length, the robot was fitted with different number of spoked whegs from 3 to 7. In addition, eight evenly spaced motor speeds ranging from 2.33 to 7.43 Hz were used to observe the effect of stride frequency. Similar trends were observed between the two gaits, with the quadrupedal gait showing better overall performance. On dry sand, wider strides were attained at reduced motor speeds with lower spoked whegs. However, on wet sand (15% and 30% saturation), wider strides were achieved with higher motor speeds and lower spoked whegs. As a result, lower spoked whegs accomplished higher body forward velocity and lower COT as saturation increased. The acquired knowledge elucidates underexplored mechanics of locomotion on granular media at different saturation levels. The WhegRunner can be used as a platform to obtain a greater insight on how to develop more proficient exploration robots, ones which can face complex and deformable terrains and mediums.
The meaning of maintaining a life philosophy of simplicity for life pleasure: A study in Kampung Naga, Tasikmalaya

ABSTRACT The concept of simple living in Kampung Naga village in Tasikmalaya is interesting to study, because it shows the quality of social relations between humans and nature; and humans and humans. For the community, the concept of a simple life becomes an inseparable socio-cultural aspect in their lives, because it is based on a belief in the meaning of a better and more effective life. This study focused on the meaning of maintaining the philosophy of life and simplicity that could bring pleasure. This study was conducted in Kampung Naga village, Tasikmalaya, Indonesia. This study was qualitative research using interview, documentation and observation in collecting data. The results showed that meaningfulness in maintaining the philosophy of life of simplicity brings the pleasures of life for the community in Kampung Naga practically into mechanical solidarity based on the traditions, religion, and habits of the people in Kampung Naga. The simple life philosophy of the Kampung Naga community is a concept of life in achieving pleasure which later becomes a collective consciousness in the manifestation of socio-cultural citizenship in Indonesia. Simplicity in Kampung Naga community is a social fact that shows the socio-cultural existence of citizenship in Indonesia in the simplicity of life both in livelihood, entertainment and food and clothing needs. Maintaining simplicity in achieving pleasure in Kampung Naga community is a meeting-point between moral values, religion and culture which later became a living reference for the community. This study contributes to the development of socio-cultural aspects in the study of Citizenship Education, so that they can strengthen the construction of a meaningful philosophy of life in terms of Educational and Cultural Research.
Exact solution of gradient echo memory and analytical treatment of gradient frequency comb

Gradient echo memory (GEM) stores and retrieves photon wave packet in forward direction with high efficiency and fidelity using photon-echo mechanism. It is an important technique for quantum memory applications. By breaking the continuity of the gradient absorption structure, the scheme becomes gradient frequency comb (GFC), which is a hybrid of GEM and atomic frequency comb (AFC). To elucidate the non-trivial field-atom evolution of gradient echo, we derive its exact analytical solution in a medium of arbitrary optical thickness subjecting to any linear gradient of transition frequency, and discuss its physical processes. Based on this solution, we further suggest and analysis two types of GFC, one with stepwise gradient and the other with discontinuous gradient.