Miracle-dz/UniFAR-FTUs huggingface dataset:
Investigating the flyby scenario for the HD 141569 system

Context. HD 141569, a triple star system, has been intensively observed and studied because of its massive debris disk. Until recently, it was regarded as a gravitationally bound triple system but recent measurements of the HD 141569A radial velocity seem to invalidate this hypothesis. The flyby scenario therefore has to be further investigated to test its compatibility with the observed disk structures. Aims. We present a study of the flyby scenario for the HD 141569 system by considering 3 variants: a sole flyby, a flyby associated with one planet embedded in the disk and a flyby with two planets in the disk. We discuss the merits of each one to reproduce the scattered light observations of the disk. Methods. We first use analytical calculations to reduce the parameter space of the 2 stellar companion orbit and then perform N -body numerical simulations of the flyby encounter using symplectic integration, taking into account the gravitational influence of the stars and the planets on massless test particles. Results. The binary orbit is found to be almost fixed by the observational constraint on an edge-on plane with respect to the observers. If the binary had an influence on the disk structure, it should have a passing time at the periapsis between 5000 and 8000 years ago and a distance at periapsis between 600 and 900 AU. It also appears that the best scenario to reproduce the disk morphology is a flyby with 1 planet embedded in the disk. For a 2 M J planet, its orbital eccentricity must be around 0.2 while for a 8 M J planet, it must be below 0.1. In the two cases, its apoapsis is about 130 AU. Conclusions. Although the global disk shape is reasonably well reproduced, some observed features cannot be explained by the present model and the likehood of the flyby event remains an issue for the scenario explored in this paper. Dynamically speaking, HD 141569 is still a puzzling system.
Big Two Personality and Big Three Mate Preferences

People differ regarding their “Big Three” mate preferences of attractiveness, status, and interpersonal warmth. We explain these differences by linking them to the “Big Two” personality dimensions of agency/competence and communion/warmth. The similarity-attracts hypothesis predicts that people high in agency prefer attractiveness and status in mates, whereas those high in communion prefer warmth. However, these effects may be moderated by agentics’ tendency to contrast from ambient culture, and communals’ tendency to assimilate to ambient culture. Attending to such agentic-cultural-contrast and communal-cultural-assimilation crucially qualifies the similarity-attracts hypothesis. Data from 187,957 online-daters across 11 countries supported this model for each of the Big Three. For example, agentics—more so than communals—preferred attractiveness, but this similarity-attracts effect virtually vanished in attractiveness-valuing countries. This research may reconcile inconsistencies in the literature while utilizing nonhypothetical and consequential mate preference reports that, for the first time, were directly linked to mate choice.
GreenSleep: A Multi-sleep Modes Based Scheduling of Servers for Cloud Data Center

Due to the high power consumption of data centers, cloud service providers have to suffer the enormous electricity bill as well as environmental problem incurred. In order to solve this problem, huge amount of efforts have been devoted to improving the resource utilization of data center by consolidating requests and switching idle servers into low-power sleeping states. In this paper, we propose GreenSleep, a novel scheduling scheme of servers with multi-sleep modes for cloud data center. Note that, the server under deeper sleep mode usually consumes less power, but needs more time to wake up. To be practical, we assume the incoming requests have multi-dimensional resource demand with different start time and end time. The biggest challenges are: 1) how to allocate the requests to as few servers as possible within execution time; 2) when and which servers should sleep under which mode; 3) when and which sleeping servers should be waken up online. We formulate our problem as an optimization problem with the goal of minimizing the total power consumption of cloud data center. To solve this problem, our algorithm is designed considering both requests allocation and sleep-modes switching. Experiments show that our method can significantly reduce the total power consumption for cloud data center.
Algorithmic for stabilization by regional pole placement

It is being proposed in this paper a computational algorithm for acquiring the output feedback gain matrix in linear systems stabilization problems by regional pole placement in LMI regions. The output feedback controller is obtained through the solution of the coupled Sylvester equations. It is shown the existence of output feedback matrix providing conditions in which this problem has a solution using Kimura and condition m + p > n. An algorithm is proposed to provide a more suitable framework for numerical solutions. The convex programming techniques are applied to find the regional pole placement equations. Palavras-chave: Stabilization; Output Feedback; Regional Pole Placement.
Role of diffusion-weighted imaging for detecting bone marrow infiltration in skull in children with acute lymphoblastic leukemia.

PURPOSE We aimed to determine whether diffusion-weighted imaging (DWI) with apparent diffusion coefficient (ADC) measurement can detect skull bone marrow infiltration in newly diagnosed acute lymphoblastic leukemia (ALL) children before therapy and normalization in complete remission after treatment. METHODS Fifty-one newly diagnosed acute lymphoblastic leukemia (ALL) patients and 30 healthy age-matched subjects were included. Cranial magnetic resonance imaging (MRI) scans were reviewed, and skull marrow ADC values were compared before treatment and in complete remission after therapy. RESULTS Skull marrow infiltration, manifested with abnormal DWI signals, was present in 37 patients (72.5%) before treatment. Of these, 23 (62.2%) showed scattered signal abnormalities and 14 (37.8%) showed a uniform abnormal signal pattern. Compared with the control group, ADC was significantly decreased in patients with ALL. DWI signal intensity and ADC normalized in patients with complete remission. CONCLUSION DWI is a useful and noninvasive tool for detecting skull infiltration in ALL children before treatment and normalization at complete remission after therapy, and it is superior to conventional MRI in terms of conspicuity of these lesions. DWI could be used as an MRI biomarker for evaluation of treatment in ALL children.
Constructing discriminative biorthogonal bases for classification

We present a method for constructing discriminative biorthogonal bases for classification. In the proposed method we use idea of the lifting scheme a method for constructing biorthogonal wavelets and Support Vector Machines used for building classifiers. Combining those two ideas resulted in the construction of classifiers which are based on information selected form the available data and still yield very good classification accuracies. We have shown that our method can be treated as a simple feature extractor for other classification algorithms or as a method that produces a set of classifiers whose outputs may be combined to give final classification.
Enhanced implant stability with a chemically modified SLA surface: a randomized pilot study.

PURPOSE Chemical modification to a sandblasted, large-grit, acid-etched (SLA) implant surface has been shown to enhance the rate of osseointegration. The goal of the present study was to examine changes in stability for implants with a chemically modified SLA surface and to compare their outcomes to those of control implants. MATERIALS AND METHODS A randomized controlled trial was conducted with 31 patients. Each patient received 2 implants with the same physical properties but with surfaces that were chemically different. The control implants had a standard SLA surface, while the test implants had a chemically modified surface. Resonance frequency analysis was assessed weekly over the first 6 weeks following implant placement. RESULTS All implants proved clinically successful, allowing for restoration. Most implants were placed in the mandible (50 of 62). A shift in implant stability from decreasing stability to increasing stability (P < .001), occurred after 2 weeks for the test implants and after 4 weeks for the control implants. CONCLUSION The findings from this pilot study provide clinical support for the potential for chemical modification of the SLA surface to alter biologic events during the osseointegration process and demonstrate levels of short-term clinical success similar to those observed for implants with an SLA surface.
Tackling the photovoltaic integration challenge in the distribution network with deferrable load

In recent years, there is an increasing deployment of photovoltaic (PV) units and energy storage systems (ESSs) in households. When the energy generated by PV units is greater than the aggregate load of households and the capacity of ESS, there will be a reverse energy flow from households to the substation. When the reverse energy flow exceeds a certain threshold, it will cause a voltage rise problem, which is a challenge for PV units to be effectively integrated with the distribution network. In this paper, we propose an energy consumption scheduling algorithm, which shifts the deferrable load (e.g., washing machines, dryers) from peak hours (e.g., 7 pm - 10 pm) to high solar radiation hours (e.g., 10 am - 2 pm) in order to jointly shave the peak load and reduce the reverse energy flow. We formulate the energy consumption scheduling problem as a stochastic optimization problem to capture the uncertainty of the amount of PV output power. The objective of our algorithm is to minimize the electricity bill for the household users which have PV units and ESS installed. We use inclining block rate (IBR) pricing and time of use (TOU) pricing to encourage users to shift their load. Numerical results show that our proposed algorithm can avoid the voltage rise problem and reduce the peak-to-average ratio (PAR) in the aggregate load.
The red secTion

Introduction Lymphoma as an adverse event associated with therapies for inflammatory bowel disease (IBD) has been a concern among patients and physicians for several decades. This article will examine the evidence related to IBD and lymphoma and suggest an approach to discussion of this important risk with patients. It is first necessary to examine the data concerning baseline risk of lymphoma in IBD as well as the mechanism by which immunosuppression may increase this risk. Subsequently, the current evidence available on lymphoma risks associated with some of the more popular therapies will be briefly discussed, recognizing, however, that one cannot appropriately make therapy decisions without weighing these risks against the therapy’s benefit. Finally, a few ideas on how to discuss these risks with patients will be offered.
Tyrosinase Inhibitors from Galls of Rhus javanica Leaves and Their Effects on Insects

Abstract As a defense mechanism of the leaves of Rhus javanica (Anacardiaceae) against the aphid Melaphis chinensis (Aphididae) attack, tannic acid is rapidly accumulated and forms galls along the midrib of the leaves resulting in a unique natural medicine Gallae Rhois. Tannic acid was found to inhibit the oxidation of ʟ-3,4-dihydroxyphenylalanine (ʟ-DOPA) catalyzed by tyrosinase (EC 1.14.18.1) with an IC50 of 22 μᴍ. The aphid would detoxify the ingested toxic tannic acid to relatively nontoxic gallic acid, whereas the non-adapted pink bollworm Pectinophora gossypiella larvae are sensitive to the ingested tannic acid.
Practical non-parametric density estimation on a transformation group for vision

It is now common practice in machine vision to define the variability in an object's appearance in a factored manner, as a combination of shape and texture transformations. In this context, we present a simple and practical method for estimating non-parametric probability densities over a group of linear shape deformations. Samples drawn from such a distribution do not lie in a Euclidean space, and standard kernel density estimates may perform poorly. While variable kernel estimators may mitigate this problem to some extent, the geometry of the underlying configuration space ultimately demands a kernel, which accommodates its group structure. In this perspective, we propose a suitable invariant estimator on the linear group of non-singular matrices with positive determinant. We illustrate this approach by modeling image transformations in digit recognition problems, and present results showing the superiority of our estimator to comparable Euclidean estimators in this domain.
Ionic channels in epithelial cell membranes.

This review focused on results obtained with methods that allow studies of ionic channels in situ, namely, patch clamping and current-noise analysis. We reported findings for ionic channels in apical and basolateral plasma membranes of various tight and leaky epithelia from a wide range of animal species and tissues. As for ionic channel "species," we restricted ourselves to the discussion of cation-specific (Na+ or K+), hybrid (Na+ and K+), and Cl- channels. For the K+-specific channels it can be said that their properties in conduction (multisite, single file), selectivity (only "K+-like" cations), and blocking behavior (Ba2+, Cs+, TEA) much resemble those observed for K+ channels in excitable membranes. This seems to include also the Ca2+-activated "maxi" K+ channel. Thus, K+ channels in excitable membranes and K+ channels in epithelia appear to be very closely related in their basic structural principles. This is, however, not at all unexpected, because K+ channels provide the dominant permeability characteristics of nearly all plasma membranes from symmetrical and epithelial cells. An exception is, of course, apical membranes of tight epithelia whose duty is Na+ absorption against large electrochemical gradients in a usually anisosmotic environment. Here, Na+ channels dominate, although a minor fraction of membrane permeability comes from K+ channels, as in frog skin, colon, or distal nephron. Epithelial Na+ channels are different from excitable Na+ channels in that they 1) are far more selective and 2) seem to be chemically rather than electrically gated. Furthermore, their specific blockers belong to very different chemical families, although a guanidinium/amidinium moiety is a common feature (TTX vs. amiloride). [For a more detailed summary of Na+ channel properties see sect. IV H. ] Most interesting is the occurrence of relatively nonselective cationic (hybrid) channels in apical membranes of tight epithelia, like larval or adult frog skin. Here, not only the weak selectivity is astonishing but also the fact that these channels react with so-called K+-channel-specific (Ba2+, TEA) as well as with Na+-channel-specific (amiloride, BIG) compounds. Moreover, this cross-reactivity does not seem to be inhibitory but, on the contrary, stimulating. Clearly these channels may become a fascinating object with which to assess whether Na+ and K+ channels are not only structurally but also genetically related and whether they can somehow be converted into each other. (ABSTRACT TRUNCATED AT 400 WORDS)
Gap Waveguide-Based PMC Packaging for via Holes-Caused Nonsmooth PEC Surface

We investigate the application of perfect magnetic conductor (PMC) packaging for a nonsmooth perfect electric conductor surface, caused by metalized via holes. The PMC shielding is artificially built by a metal lid of pins, based on the gap waveguide (GW) technology. As a foundation, the effects of via hole in a unit cell are studied first considering its diameter, substrate thickness, pin size, pin height, as well as relative position between the via hole and the pin. The via adjacent space and pin rows are also considered for a general grounded coplanar waveguide along with ground vias. The effectiveness of package for such a transmission line containing metalized via holes is then verified experimentally. It is shown that the measured performance agrees well with the simulation. This paper presents a guideline for the GW-based PMC packaging technology.
I-Band Titin in Cardiac Muscle Is a Three-Element Molecular Spring and Is Critical for Maintaining Thin Filament Structure

In cardiac muscle, the giant protein titin exists in different length isoforms expressed in the molecule's I-band region. Both isoforms, termed N2-A and N2-B, comprise stretches of Ig-like modules separated by the PEVK domain. Central I-band titin also contains isoform-specific Ig-motifs and nonmodular sequences, notably a longer insertion in N2-B. We investigated the elastic behavior of the I-band isoforms by using single-myofibril mechanics, immunofluorescence microscopy, and immunoelectron microscopy of rabbit cardiac sarcomeres stained with sequence-assigned antibodies. Moreover, we overexpressed constructs from the N2-B region in chick cardiac cells to search for possible structural properties of this cardiac-specific segment. We found that cardiac titin contains three distinct elastic elements: poly-Ig regions, the PEVK domain, and the N2-B sequence insertion, which extends ∼60 nm at high physiological stretch. Recruitment of all three elements allows cardiac titin to extend fully reversibly at physiological sarcomere lengths, without the need to unfold Ig domains. Overexpressing the entire N2-B region or its NH2 terminus in cardiac myocytes greatly disrupted thin filament, but not thick filament structure. Our results strongly suggest that the NH2-terminal N2-B domains are necessary to stabilize thin filament integrity. N2-B–titin emerges as a unique region critical for both reversible extensibility and structural maintenance of cardiac myofibrils.
Absence of α- and β-dystroglycan is associated with Walker-Warburg syndrome

Objective: To identify the underlying genetic defect in 5 patients from a consanguineous family with a Walker-Warburg phenotype, together with intracranial calcifications. Methods: Homozygosity mapping and exome sequencing, followed by Sanger sequencing of the obtained candidate gene, was performed. Expression of the candidate gene was tested by reverse transcription PCR. Patient fibroblasts were converted to myotubes, and the expression and function of dystroglycan was tested by Western blotting. Results: We detected a homozygous loss-of-function frameshift mutation in the DAG1 gene and showed that this mutation results in a complete absence of both α- and β-dystroglycan. Conclusions: A loss-of-function mutation in DAG1 can result in Walker-Warburg syndrome and is not embryonic lethal.
When Do Words Promote Analogical Transfer?

The purpose of this paper is to explore how and when verbal labels facilitate relational reasoning and transfer. We review the research and theory behind two ways words might direct attention to relational information: (1) words generically invite people to compare and thus highlight relations (the Generic Tokens [GT] hypothesis), and/or (2) words carry semantic cues to common structure (the Cues to Specific Meaning [CSM] hypothesis). Four experiments examined whether learning Signal Detection Theory (SDT) with relational words fostered better transfer than learning without relational words in easily alignable and less alignable situations (testing the GT hypothesis) as well as when the relational words matched and mismatched the semantics of the learning situation (testing the CSM hypothesis). The results of the experiments found support for the GT hypothesis because the presence of relational labels produced better transfer when two situations were alignable. Although the CSM hypothesis does not explain how words facilitate transfer, we found that mismatches between words and their labeled referents can produce a situation where words hinder relational learning.
Error Correction in DFT Codes Subject to Low-Level Quantization Noise

This paper analyzes the effects of quantization noise on the error correcting capability of a popular class of real-number Bose-Chaudhuri-Hocquengue m (BCH) codes known as discrete Fourier transform (DFT) codes. Among other uses, DFT codes h eve been proposed for joint source-channel coding because their robustness to channel nois is apparently superior to the classical tandem source-channel coding (where the source c od is designed without regard to the possibility of channel errors). In order to handle quant iz tion noise, we develop a decoding algorithm that is based on the Peterson-Gorenstein-Zierle r (PGZ) algorithm and we explore its performance in the presence of quantization noise via analy tic means and simulations. As a result of our analysis, we obtain an explicit lower bound on t he precision needed to guarantee correct identification of the number of errors; our simulati ons suggest that this bound can be tight. Finally, we prove that the optimal bit allocation for DFT codes (in terms of minimizing an upper bound used as a threshold in the part of our algorithm that determines the number of errors) is the uniform one.
Metastatic gestational trophoblastic tumor presenting as spontaneous kidney rupture: Treatment with embolization.

Choriocarcinoma is a rapidly growing tumor that characteristically outgrows its blood supply. We report a rare case of metastatic choriocarcinoma presenting with acute right flank pain due to kidney rupture secondary to renal metastasis. The renal metastasis was embolised to stanch blood for control of hemorrhage. A brief review of the imaging features and therapeutic options for the ruptured renal metastases is discussed along with the case.
A methodology for studying persistency aspects of internet flows

We focus in this paper on Internet flows, consider their contributions to the overall traffic per time unit or bin, and perform a multi-scale and multi-protocol analysis to explore the persistency properties of those flows that contribute the most (also known as "heavy hitters" or "elephants"). Knowing the persistency features (or a lack thereof) of the heavy hitters and understanding their underlying causes is crucial when developing traffic engineering tools that focus primarily on optimizing system performance for elephant flows.The main difficulty when studying the persistency properties of flows is that the available measurements are either too fine-grained to perform large-scale studies (i.e., packet-level traces) or too coarse-grained to extract the detailed information necessary for the purpose at hand (i.e., Netflow traces, SNMP). We deal with this problem by assuming that flows have constant throughput through their lifetime. We then check the validity of this assumption by comparing our Netflow-derived findings against those obtained from directly studying the corresponding detailed packet-level traces. By considering different time aggregations (e.g., bin sizes between 1--10 minutes) and flow abstractions (e.g., raw IP flows, pre-fix flows), varying the definition of what constitutes an "elephant", and slicing by different protocols and applications, we present a methodology for studying persistency aspects exhibited by Internet flows. For example, we find that raw IP flows that are elephant flows for at least once (i.e., one bin or time unit) in their lifetimes tend to show a remarkable persistence to be elephants for much of their lifetimes, but certain aggregate flows exhibit more intricate persistency properties.