Miracle-dz/UniFAR-FTUs huggingface dataset:
RX J0911+05: A Massive Cluster Lens at z = 0.769

We report the detection of a massive high-redshift cluster of galaxies near the quadruple quasar RX J0911+05, using the Low-Resolution Imaging Spectrograph instrument on the Keck II telescope. The cluster is found to have a mean redshift of = 0.7689 ± 0.002 and a velocity dispersion of σ = 836 km s-1, based on redshift measurements for 24 member galaxies. This massive high-redshift cluster is the origin of the unusually large external shear required by lensing models of the quadruple quasar system. We predict the expected time delay depending on the exact contribution of the cluster. A measurement of the time delay and further deep lensing and X-ray observations will unravel useful properties of this serendipitously discovered high-redshift cluster and may put interesting cosmological constraints on H0.
Output Bipartite Consensus for Second-Order Heterogeneous Uncertain Agents With State-Dependent Cooperation-Competition Interactions

For state-dependent cooperation-competition networks, the output bipartite consensus problem of heterogeneous uncertain agents is studied in this article. In our framework, all the agents are described by second-order continuous-time nonlinear systems with different intrinsic dynamics, and the agents' uncertainties are characterized by unknown parameters in the intrinsic term. Then, the edge evolution rules with hysteresis coefficients are proposed via the classification strategy. To solve this problem, the distributed Lyapunov-based redesign method with the potential function term is first applied to such a second-order heterogeneous uncertain multiagent system. Through the three-step correlation design, the explicit expressions of the distributed controllers and the unknown parameter estimators are obtained, and it is shown that the state-dependent cooperation-competition network is always connected and maintains structural balance for all time if an initial structurally balanced and connected network topology is provided. On this basis, it follows from the total Lyapunov function that output bipartite consensus can be achieved asymptotically for the heterogeneous uncertain multiagent system. Finally, a numerical simulation is provided to validate the structural balance of state-dependent networks and output bipartite consensus of heterogeneous uncertain agents.
Linear dynamic polarizability and the absorption spectrum of an exciton in a quantum ring in a magnetic field

The problem of an electron–hole system interacting through a contact potential and moving in a one-dimensional quantum ring threaded by an Aharonov–Bohm flux is considered, with respect to the system's energetics as well as its optical properties. An exact analytical expression for the energy spectrum is derived using a straightforward method based on boundary conditions for wavefunctions and their derivatives along the ring. The optical properties of this exciton system, namely linear dynamic polarizability and the absorption spectrum, are investigated and certain unusual features are demonstrated. It is shown, for example, that for special values of the magnetic flux there are energies in the spectrum that correspond to the dark excitonic states.
PERANCANGAN DAN IMPLEMENTASI ANALISIS KEAMANAN NIDS SISTEM NOTIFIKASI ROUTEROS MENGGUNAKAN PESAN INSTAN DI JARINGAN CLOUD PUBLIK

Serangan siber memiliki dampak signifikan pada kinerja jaringan di cloud publik. Sysadmin harus siap untuk menangani setiap serangan di server yang sangat dibutuhkan untuk mencegah serangan yang dapat mengganggu kinerja jaringan cloud publik. Diperlukan suatu sistem untuk mendeteksi dan memberikan peringatan dini terhadap setiap serangan siber. Oleh karena itu, diperlukan sistem yang secara otomatis mengirimkan notifikasi kepada administrator secara real-time dengan memanfaatkan platform Instant Messaging. Makalah ini memberikan analisis terhadap sistem notifikasi yang dibangun menggunakan RouterOS sebagai NIDS dengan Instant Messaging sebagai platform notifikasi, yaitu serangan IcmpFlooding, PortScanning, dan HttpFlooding. Hasil yang diperoleh menunjukkan bahwa sistem berhasil memberikan notifikasi berupa waktu serangan, IP sumber serangan, sumber port serangan dan jenis serangan secara real-time. Hal ini diharapkan dapat membantu sysadmin melakukan tindakan penanganan selanjutnya terhadap ancaman di jaringan cloud publik.
Low frequency modulation of jets in quasigeostrophic turbulence

Quasigeostrophic turbulence on a β-plane with a finite deformation radius is studied numerically, with particular emphasis on frequency and combined wavenumber-frequency domain analyses. Under suitable conditions, simulations with small-scale random forcing and large-scale drag exhibit a spontaneous formation of multiple zonal jets. The first hint of wave-like features is seen in the distribution of kinetic energy as a function of frequency; specifically, for progressively larger deformation scales, there are systematic departures in the form of isolated peaks (at progressively higher frequencies) from a power-law scaling. Concomitantly, there is an inverse flux of kinetic energy in frequency space which extends to lower frequencies for smaller deformation scales. The identification of these peaks as Rossby waves is made possible by examining the energy spectrum in frequency-zonal wavenumber and frequency-meridional wavenumber diagrams. In fact, the modified Rhines scale turns out to be a useful measure o.
Scaling theory of driven polymer translocation

T. Ikonen, A. Bhattacharya, T. Ala-Nissila, 3 and W. Sung Department of Applied Physics and COMP Center of Excellence, Aalto University School of Science, P.O. Box 11000, FI-00076 Aalto, Espoo, Finland Department of Physics, University of Central Florida, Orlando, Florida 32816-2385, USA Department of Physics, Box 1843, Brown University, Providence, Rhode Island 02912-1843 Department of Physics, Pohang University of Science and Technology, Pohang 790-784, South Korea (Dated: November 26, 2012)
On the Origin of Symmetries

We reconsider the role of Lorentz invariance in the dynamical generation of the observed internal symmetries. This invariance could only be imposed in the sense that all non-invariant effects caused by the spontaneous breakdown of Lorentz symmetry (SBLS) were physically unobservable. Remarkably, the application of this principle to the most general relativistically invariant Lagrangian, with arbitrary couplings for all the fields involved, leads by itself to the appearance of a symmetry and, what is more, to the massless vector fields gauging this symmetry in both Abelian and non-Abelian cases. In contrast, purely global symmetries are only emerged as accidental consequences of the gauge symmetry. A simple model for the SBLS based on massive vector and real scalar field interactions is considered; it is found that spontaneously broken gauge symmetries could also appear, when SBLS happens and is required to be physically unobservable.
New results on planetary nebula shaping and stellar binarity

The question of what physical mechanisms shape planetary nebulae into their observed morphologies remains open. However, intensified efforts since the last meeting in this series, Asymmetrical Planetary Nebulae IV, in July 2007 have yielded some excellent results. In this review we concentrate on those developments that have taken place in the last three years, with emphasis on results obtained since the review by De Marco (2009).
Towards a Scalable IIoT Solution for Factory Monitoring

With the declining cost of computer chip production, they have been increasingly integrated into everyday appliances and devices, giving rise to the Internet of Things. In an industrial context, these devices improve control and productivity in a production line. This paper evaluates the scalability of connections of those devices to an edge gateway, as well as the scalability of connections of edge gateways to a server platform in a simulated industrial setting.
Connecting Twitter With Scholarly Networks: Exploring HCI Scholars’ Interactions From an SNA Approach

Background: Building a reputable network on Twitter is viewed as impactful in several scholarly disciplines, but little is known about the professional and interdisciplinary human-computer interaction (HCI) community. This study combined two approaches from scholarly communication and technical communication to capture the static and dynamic features of the HCI scholar Twitter network. Literature review: Related studies that described the scholarly reputation built through Twitter and social networking in the field of HCI were reviewed and discussed. Research questions: 1. In which countries are HCI scholars more likely to follow their peers in the same country? 2. What are the characteristics (country, reputation) and actions (reciprocity) of HCI scholars who are more likely to build HCI scholarly network profiles on Twitter? Research methodology: The network analysis method of the exponential random graph model (ERGM) was adopted to trace and visualize current follower networks on Twitter. Results and discussion: We found that 22.9% of HCI scholars use Twitter and that reciprocity and country of current employment best drive the Twitter connections of scholars. Characteristics of HCI scholars’ tie formation online are also illustrated and discussed. Implications for practice: This study contributes to field studies of professional networks by identifying the structural properties and factors that influence scholars’ search for professional development on Twitter. The empirical findings should be a helpful reference for HCI professional societies and individual scholars in operating online professional networks.
Tits boundary of CAT(0) 2-complexes

We investigate the Tits boundary of locally compact CAT(0) 2-complexes. In particular we show that away from the endpoints, a geodesic segment in the Tits boundary is the ideal boundary of an isometrically embedded Euclidean sector. As applications, we provide sufficient conditions for two points in the Tits boundary to be the endpoints of a geodesic in the 2-complex and for a group generated by two hyperbolic isometries to contain a free group. We also show that if two CAT(0) 2-complexes are quasi-isometric then the cores of their Tits boundaries are bi-Lipschitz.
Evaluation of the immune response to silver nanoparticles against cutaneous leishmaniasis in albino mice Balbs/c

Leishmaniasis is an epidemic disease that affects the human body and is transmitted through the bite of the sandfly insect, is the most common and causes skin lesions mainly ulcers on the exposed parts of the body. The results of the examination in the level of immunoglobulins IgM and INF-ϒ concentration of one of the cellular kinetics showed that there was a significant increase of P<0.05 in the sera of mice of the positive control group (first) infected with cutaneous leishmaniasis, compared with the negative control group (second). The results also showed that the drug pentostam (Sb), silver nanoparticle (AgNPs) and the loaded drug (AgNPs + Sb) had a significant effect on a decrease in the rate of immunoglobulins IgM and the lowest concentration rate was in the serum of mice treated with the drug loaded with silver nanoparticles. (AgNPs + Sb), while there was an increase in the average (INF -ϒ) concentration, where the highest concentration was in the group of mice treated with the drug loaded with silver nanoparticles (AgNPs + Sb) compared with the positive control group infected with cutaneous leishmaniasis,,,,
A Kaluza--Klein-like model of the gauge theory of gravity and its cosmological meaning

A new Kaluza--Klein-like (KK-like) model of the de Sitter gauge theory of gravity is constructed from the geometry related to the gauge-invariant expressions of the gravitational fields. The model reduces to general relativity with a cosmological constant Lambda when the spin tensor is equal to zero. Moreover, it is shown that among the R-2Lambda+betaS^{abc}S_{abc} models, where beta is a dimensionless parameter and S_{abc} denotes torsion, the KK-like model is the only one that may avert the big-bang singularity of the Robertson--Walker universe filled with a spin fluid.
Legged Locomotion in Challenging Terrains using Egocentric Vision

Animals are capable of precise and agile locomotion using vision. Replicating this ability has been a long-standing goal in robotics. The traditional approach has been to decompose this problem into elevation mapping and foothold planning phases. The elevation mapping, however, is susceptible to failure and large noise artifacts, requires specialized hardware, and is biologically implausible. In this paper, we present the first end-to-end locomotion system capable of traversing stairs, curbs, stepping stones, and gaps. We show this result on a medium-sized quadruped robot using a single front-facing depth camera. The small size of the robot necessitates discovering specialized gait patterns not seen elsewhere. The egocentric camera requires the policy to remember past information to estimate the terrain under its hind feet. We train our policy in simulation. Training has two phases - first, we train a policy using reinforcement learning with a cheap-to-compute variant of depth image and then in phase 2 distill it into the final policy that uses depth using supervised learning. The resulting policy transfers to the real world and is able to run in real-time on the limited compute of the robot. It can traverse a large variety of terrain while being robust to perturbations like pushes, slippery surfaces, and rocky terrain. Videos are at https://vision-locomotion.github. io
A rare coexistence of common atrium, univentricular atrioventricular connection, total anomalous pulmonary venous connection, and aortic atresia in an asymptomatic teenage girl

A functionally univentricular heart is used to describe a heart with inflow from two atrioventricular valves or a common atrioventricular valve draining into one ventricular chamber in which oxygenated and non-oxygenated blood are mixed together. It accounts for 1% of all congenital cardiac anomalies with a reported incidence of 0.05–0.1 per 10,000 live born babies. On the other hand, common atrium is a rare form of interatrial communication which occurs mainly with atrioventricular septal defect. Combination of common atrium and functionally univentricular heart is very rarely seen and is manifested with severe cyanosis and hypoxia. Total anomalous pulmonary venous connection (TAPVC) is another rare congenital heart anomaly in which all pulmonary veins are draining into the systemic veins, right atrium, or coronary sinus. Its incidence is estimated to be 2.2% of all congenital cardiac anomalies (0.008 of all live births). This anomaly can be seen in association with various types of cardiac malformations. Without cardiac surgery, most of involved infants cannot survive more than a few months of age. Patients with functionally univentricular heart and TAPVC are a considerably high risk group. The majority of cases of aortic valve atresia are reported in hypoplastic left heart syndrome. Here, we report a very rare case of an unoperated 16-year-old girl who had these four congenital cardiac anomalies simultaneously: common atrium, functionally univentricular heart, supracardiac TAPVC with the pulmonary venous confluence draining by a vertical vein into the left brachiocephalic vein and then into the superior vena cava (SVC), and atretic aortic valve. To the best of our knowledge, such case has not been reported previously. 2 | CASE REPORT
Does one need to consider superconductivity as Bose-Einstein condensation?

It is shown that the temperature dependence of the value of energy gap in superconductors can be classified as the order-disorder transition with its characteristic features. The obtained relationship between the critical temperature and the critical magnetic field of the condensate of electrically charged particles is in accordance with measurement data of superconductors.
The Formal Model article format: justifying modelling intent and a critical review of data foundations through publication

Documenting complex models has long been a problem. Models are currently developed, implemented, and applied before review. Combined this leads to details hidden in the appendices or too little detail in the methods section to be reproducible. Modellers involve reviewers too late in the process. This does not allow them to flag issues, suggesting redesigns and reruns only after the analysis is complete. We propose splitting the model documentation, before analysis, into three steps: the Formal Model, Implementation Documentation, and Evaluation and Testing. Researchers can then use the well-built model for analysis. We introduce the first of these, the Formal Model as a peer-reviewed paper format that lays out the intentions for the model. The Formal Model includes reviewed literature that identifies the components of the model. Lays out the theoretical framework, modelling approaches and externalities. Plans to implement each process, with equations, descriptions, state variables and scales. Finally, the Formal Model gives the model’s strengths, weaknesses, exclusions, and place in the literature. We provide a flexible template for a Formal Model to aid in establishing a new common format. The Formal Model aims to improve transparency and provide a formal approach to documentation. Reviewers can help improve the model by identifying problems early. The Formal model contains the details needed to allow for reproducibility. It also encourages modellers to think about the consequences of what is and is not included within the model. And finally, it gives the credit that modellers deserve for the involved process of creating a model.
A Soft, Wearable Skin-Brace for Assisting Forearm Pronation and Supination With a Low-Profile Design

Neurological diseases affect more than 50 million people living with persistent upper limb impairments worldwide, and 40% of patients remain impaired even after intensive hospital care. Wearable robots have been developed for enhancing functionality in activities of daily living (ADL). The role of forearm movement is as crucial as the hand and wrist. However, the coincidence of the rotation axis with the forearm presents design challenges, and thus there are few studies on wearable devices for assisting forearm pronation/supination movement. In this study, we propose a bioinspired soft wearable skin-brace for the forearm pronation/supination to assist patients in ADL and perform rehabilitation training. The low-profile design that can fit the forearm like clothing combines features of a rail structure and tendon driving mechanism with high transfer efficiency. We conducted a biomechanical analysis to quantify the movement of wrist landmarks during forearm rotation, as well as a performance evaluation and user tests with our prototype. We demonstrate that it can provide patients with sufficient and compliant support in terms of range of motion and output torque. The user-friendly design allows patients to don and doff the device independently and quickly, as well as for individual customization. With the advantage of not restricting other joint movements, the device also shows the possibility of co-use with other rehabilitation devices.
On Dynamical Causes of Eddy Variability in the Ocean

The temporal changes of the oceans eddy variability and the underlying dynamical causes are investigated. The study is based on a 18.5 year long time series of satellite altimetry sea surface height (SSH) anomalies (TOPEX/Poseidon, Jason-1 and Jason-2), from which statistics for the eddy kinetic energy field (EKE) are computed. In this study it is demonstrated that the most energetic regions coincide with major current systems, meandering jets and frontal areas. These are the domains where SSH non-gaussianity is acquainted most likely due to inhomogeneities in the ocean. It is also shown that the distribution of SSH skewness and kurtosis can be used to assess the seasonal variations of meandering jets and ocean surface circulation processes. The extent to which the eddy field is reacting to changes in the wind forcing is addressed. EKE fields, computed from an eddy-resolving global circulation model STORM driven both by NCEP forcing and by climatology, are used complementary to the altimetry. The results suggest that changes of EKE depict a complex pattern and are far from uniform. A comparison of the time series of wind stress and EKE suggests that changing winds cause a response in eddy activity. In several parts of the ocean there is no direct relation between the wind forcing and the increase in EKE, pointing to non-local forcing effects of eddy variability. On basin average, changes in EKE appear to be correlated with climate modes. Ocean variability contains all temporal and spatial scales. The investigation of temporal changes in EKE and its causes was extended through spectral analysis, which is appropriate for estimating the impact of different scales on the overall energy distribution. The global frequency spectra for altimetry is aliased by tidal residuals. In the Atlantic through a joint data-model analysis it is evident that as the resolution increases the model’s spectra gets closer to the altimetry. Regionally, the shape of the frequency spectra of SSH has steeper slopes at higher frequencies and flatter slopes at lower frequencies. The slopes of wavenumber spectra in high energy regions, dominated by non-linearity, follow roughly k or k at the mesoscale. Thus, surface quasi-geostrophy turbulence theory appears more appropriate to provide a dynamical explanation of these spectral slopes. The low energy regions have flatter slopes ranging from −3 to −2. Further research is needed in order to clarify the causes of EKE on a global scale.
Crisis management in the community mass recall of angiotensin II receptor blocker losartan due to nitrosamine impurities

Introduction Angiotensin II Receptor Blockers (ARB) are widely utilized in the treatment of hypertension and nephropathy. In March 2019, a mass recall of selected brands of an ARB, losartan due to reported elevated levels of potentially carcinogenic nitrosamine impurities was implemented in a Singapore primary care institution. Objective To describe the crisis management of the mass losartan recall in a public primary healthcare institution in Singapore. Methods The crisis management framework was adapted from the Gonzalez-Herrero and Pratt model. This crisis was managed over three phases: identification of impending crisis based on risk reports by local health authorities, formation of a task force to develop turnaround strategies and measures, implementation and monitoring of the remedial measures. Data to plan and chart implementation was retrieved from the institution databases, including the Electronic Health Intelligence System for patient medical and prescription records, Outpatient Administrative System for reimbursement of medications and other expenditures incurred. An exigency scheme, Losartas® Review Service (LRS), was established to expedite the replacement of the affected medication with another ARB or another anti-hypertensive medication. Results SingHealth Polyclinics completed the recall of 29,794 (92.1%) patients within 14 weeks. The majority of the patients (76.2%) were attended to by doctors, while 16.5% and 7.3% were managed using the LRS and pharmacy respectively. The institution incurred a cost of SGD2,824,760 (estimated SGD95 per patient) to manage the crisis. Conclusion The successful implementation of a mass medication recall hinged on timely intervention, cross-departmental coordination, effective communication and judicious resource allocation.