Miracle-dz/UniFAR-FTUs huggingface dataset:
Highlights in Suicidal Ideation and Non-Suicidal Self-Injury in Costa Rica Children and Adolescents

Introduction: Suicidal ideation and deliberate self-harm prevalence has markedly increased among youngsters over the past two decades. The objective of the work was to determine the prevalence and factors associated with delibe-rate self-harm and suicidal ideation in students of Costa Rica. Material and Methods: Descriptive and cross-sectional study was conducted. Question-naires were applied to 2284 students in Costa Rica to collect data on individual, family and social factors related to self-harm behavior and suicidal ideation. Data were analyzed by using SPSS program to estimate frequencies and multivariate models which were tested with different variables. All procedures performed were in accordance with ethical standards. Results: Around 18.2% of the young people presented suicidal ideation and 10.2% self-harm behavior. “Bullying” was the variable most strongly associated with suicidal thoughts and deliberate self-harm. Conclusions: Efforts should be made to promote positive school climates where the practice of bullying is not allowed.
Mobilizing Peripheral Partisan Voters: A Field Experimental Analysis From Three California Congressional Election Campaigns

Since the early 2000s, an array of experimental research has demonstrated that face-to-face canvassing is the most effective form of get-out-the-vote campaigning. Recent scholarship, however, suggests that text messaging can also have powerful mobilization effects. Can the effects of text messaging match those of canvassing? We present a field experiment gauging the effects of text messaging, canvassing, mail, and phone calls among medium propensity evangelical Christian voters in three California battleground congressional districts for the 2018 midterm election. The results show significant turnout effects associated with texting as well as any form of outreach followed by a late-October text message. This challenges the widely held notion that personalized contacting is required to get voters to the polls; rather, we find that peripheral voters—often targeted by campaigns for mobilization—may be receptive to anonymous but timely outreach.
Interfirm cooperatives enabling organizational ambidexterity, a CASE study of the printing industry in Colombia

Research into organizational ambidexterity at the interorganizational level is limited, but it is even more scarce when considering emerging markets and alternative organizational forms such as the cooperative enterprise. We will attempt to fill these research gaps by offering in-depth case studies of three interfirm cooperatives within the printing industry in Colombia. We analyze how interfirm cooperatives enable organizational ambidexterity in its small-to-medium-sized enterprises (SMEs), and explore which factors are hindering ambidexterity. Our findings indicate that lower socioemotional wealth in SMEs undermines the need to invest in exploration. Additionally, cooperation within an interfirm cooperative appears to be entirely reliant on its component SMEs agreeing on the right balance of social and economic values. We conclude that, although the interfirm cooperative may play an important role in facilitating ambidexterity in emerging markets, transitioning from a primarily transactional role to a higher role as intermediator of ambidexterity poses significant challenges.
Demystifying Index Rebalancing: An Analysis of the Costs of Liquidity Provision

Recent academic studies claim that price impacts associated with index rebalancing can be large and may represent a hidden cost to fund investors. The authors examine the return behavior around 18,871 rebalances for the Russell indexes from 2016–2021. A key difference from the literature is that they estimate net flows for each stock aggregated across all Russell indexes rather than the gross flows into each index. This is important because stocks migrating from one index to another may see positive or negative flows depending on the assets tracking those indexes. They find many instances in which the costs of liquidity provision, as measured by the beta-adjusted temporary impact, are negative. This is consistent with a highly competitive market for liquidity provision.
Design of a 60 GHz Low Noise Amplifier in a 0.13 µm SiGe BiCMOS Process

The Large Hadron Collider (LHC) in CERN outside Geneva in Switzerland is scheduled for an upgrade to improve the luminosity. This upgrade will require higher granularity for the triggering system, increasing the need for very high bandwidth data transfer. This thesis is a part of a feasibility study at the University of Heidelberg regarding the possibilities of using wireless data transfer in the 60 GHz band for data readout on the trigger system. In order to realize 60 GHz data transfer, a fully functional transceiver operating at 60 GHz must be developed. This work covers the design and realization of a low noise amplifier for use in this system. In order to obtain the required design knowledge, a comprehensive study of microwave theory is performed. This theory forms the basis for designing a low noise amplifier operating at very high frequencies. A summary of the most important theory is also included in this thesis. A low noise amplifier for use in a 60 GHz transceiver is designed and simulated using National Instruments Microwave Office. Simultaneous impedanceand noise matching is used in order to realize both low noise and low return loss at the same time. The amplifier is designed in a 0.13 μm SiGe BiCMOS process and a layout measuring 0.13 mm2 is proposed. The resulting low noise amplifier has 9.5 GHz bandwidth, 4.3 dB noise figure, 20.4 dB gain and 9.8 mW power consumption and is within all given specifications. Although the results only show simulated response, we have good reason to believe that these results can be realized by performing a thorough EM simulation and process variation simulation. If this is the case, the resulting amplifier will be very competitive to previously published low noise amplifiers.
Review of the Elemental Status in Blood Serum in Patients with Ischemic Stroke

The study of the elemental status in the modern paradigm of medical diagnostics occupies an increasingly large niche due to the possible use of trace elements as possible predictors of cerebrovascular pathologies. Moreover, the great importance of the elemental component in the main enzymatic systems of metabolism allows us to consider them also as a therapeutic target. There are many mechanisms in the pathophysiology of stroke development, each of which, in one way or another, is mediated through the interaction of regulatory proteins with trace elements as cofactors. Therefore, it is necessary to pay close attention to elemental homeostasis in the focus of ischemic pathologies. Aim. Systematization of the known pathogenetic effects of the most metabolic homeostasis important elements on the course of stroke, both contributing factors to earlier rehabilitation and minimal neurological deficit after the ischemic event itself, and factors aggravating the recovery process and leading to serious neurological consequences. This pursues not only a prognostic goal to determine the severity of ischemia or to identify risk groups with certain shifts in elemental constants, but also the therapeutic one — to replace the falling functions of the dropping metabolic agents, as happens with the elements involved in antioxidant systems. It is also necessary to develop a methodology for stopping the excess of nerve cells mediating excitotoxicity with calcium ions, which closes the vicious circle of vascular necrosis with additional destruction of the nervous tissue. Conclusion. The conclusions that we can summarize quite convincingly indicate a significant contribution of the elemental status to the pathogenesis of ischemic stroke. Dysregulation of the elemental component can force the damaging effect of ischemia on brain cells. At the same time, many elements show a surplus during an ischemic event: Li, I, Mn, Zn, As, Se, Pb, Sr, Ni, however, not all of the presented elements negatively affect the course of stroke, since an increase in the level of some metals may be compensatory in nature, and for their further applicability as diagnostic and therapeutic agents, similar analytics are required.
ROBUST AND EFFECTIVE AIRBORNE LIDAR POINT CLOUD CLASSIFICATION BASED ON HYBRID FEATURES

Abstract. State-of-the-art point cloud classification methods mostly process raw point clouds, using a single point as the basic unit and calculating point cloud features by searching local neighbors via the k-neighborhood method. Such methods tend to be computationally inefficient and have difficulty obtaining accurate feature descriptions due to inappropriate neighborhood selection. In this paper, we propose a robust and effective point cloud classification approach that integrates point cloud supervoxels and their locally convex connected patches into a random forest classifier. We apply a centroid cloud extracted from supervoxels into the proposed classifier, which effectively improves the point cloud feature calculation accuracy and reduces the computational cost. Considering the different types of point cloud feature descriptions, we divide features into three categories (point-based, eigen-based, and grid-based) and accordingly design three distinct feature calculation strategies to improve feature reliability. The proposed method achieves state-of-the-art performance, with average F1-scores of 89.16%, respectively. The successful classification of point clouds with great variation in elevation also demonstrates the reliability of the proposed method in challenging scenes to some extents.
Relationship between organisational culture, quality practices and performance: conceptual framework

This study aims to propose a conceptual framework to investigate the impact of organisational culture on quality practices and performance. Competing values framework has been used to capture the underlying value orientation of organisational culture and used the same to check its impact on performance. This study integrated both TQM and Six Sigma quality practices and defined a new set of infrastructure and core quality practices. In case of infrastructure practices, five practices have been identified which are top management support, customer relationship, supplier relationship, workforce management and Six Sigma role structure. Also, core practices resulted into five practices viz. quality information, product/service design, process management, Six Sigma focus on metrics and Six Sigma structured methodology. Further, a pilot study has been conducted in 40 medium scale manufacturing organisations to test the reliability of the constructs developed.
Weight at First Calving and Its Relationship With Productive Indicators in Nelore Cows in a Grazing System of the Bolivian Tropics

Considering only selection for increased weight gain until after one year could cause adult cow weight gain that would not be desirable depending on the production system. To evaluate the relationship of weight at first calving and its relationship with productive indicators in Nelore cows in a grazing system of the Bolivian tropics. Retrospective data from the years 1992 to 2019 were used, which were part of two cooperatives: Agropecuaria Integral San Juan de Yapacaní and the Centro Tecnológico Agropecuario located in Santa Cruz de la Sierra, Bolivia. The data corresponding to 1052 Nelore primiparous cows were used for the research work. The lightest cows had the same calf weight at birth as the rest of the heaviest cows, weaned a lighter calf, arrived the first calving rapidly, showed no differences with the Accumulated Production and the Calf Index with the heaviest cows, but had the highest stock efficiency. Identifying the group of lightest cows as the most efficient was considered a positive tool to recommend producers to take into account at the time of selection. The study shows that the age at first calving is related to indicators of productive efficiency in Nelore cows in a grazing system of the Bolivian tropics and that their use would have a greater impact in identifying the most efficient cow for each production system.
Isolation and characterization of a novel laccase from an Antarctic thermophilic Geobacillus

Abstract Laccases are enzymes from the multi-copper oxidase family that have gathered a lot of attention due to their wide range of substrates, their interspecies variability and their still elusive mechanism of action. The presence of four copper atoms in their active site makes them an interesting model for the study of the relationship between the structure and function of proteins. It is possible to find them in fungi, plants and prokaryotes. Bacterial laccases display many advantages over fungal laccases in terms of their application. They have, in general, a greater thermal stability and a different pH profile, which contributes to widening their field of possible application. In the present work, a novel laccase from an Antarctic microorganism, Geobacillus sp. ID17, is purified and characterized. This is the first Antarctic bacterial laccase to be functionally described. It was found to be active at neutral pH and to have greater activity at 55°C. Its catalytic constants are in the order of other bacterial laccases. Screening for different potential substrates was also performed, showing that this novel laccase is more selective than commercial laccases. This enzyme could find potential application in the generation of gallic acid polymers or in organic synthesis in contexts where meticulous substrate discrimination is needed.
Flocking of Battery-Powered Mobile Agents with Energy-Aware Potential Function

Flocking of mobile agents has been well studied in the literature. However, since most practical mobile agents, e.g., robots, UAVs, are typically powered by onboard batteries, it is of practical significance to consider the battery consumption in the control design, and explore how to optimize the distribution of energy consumption. In this paper, we consider the flocking of battery-powered mobile agents using the potential field approach. We first analyze the limitations of the classical potential field method. Next, we propose a new potential function by considering the battery consumption, and design the flocking control law related to the gradient of the proposed potential functions correspondingly. We verified the effectiveness of the proposed method with both simulations and a group of UAVs. The results of experiment verify that the proposed method can optimize the energy consumption of the flocking system when compared with the existing methods, which is benefit to the endurance of the system.
A Switching-Less True-Time-Delay-Based Beam Probing Approach for Ultra-Low Latency Wireless Communications: System Analysis and Demonstration

Emerging wireless communication systems at millimeter-wave (mmW) require wideband phased-arrays transceivers not only for high data-rate communications but also for fast direction finding using beam training algorithms. In real world, scanning both azimuth and elevation is also important for accurate localization over three-dimensional (3D) space. This brief presents the system analysis and demonstration of frequency dispersive 3D beam training algorithm using a <inline-formula> <tex-math notation="LaTeX">$2 \times 2$ </tex-math></inline-formula> planar array integrated in a single chip suited for low-latency mmW wireless communications. System-level issues with high search latency in earlier time-division based beam training algorithms and the need for multiple ICs for 3D beam training are addressed with a large delay range true-time-delay (TTD) based spatial signal processor (SSP) together with the frequency-dependent rainbow beam training algorithm. Trade-offs between angular coverage efficiency over the 3D space and required hardware delay range are analyzed. Measured results on the <inline-formula> <tex-math notation="LaTeX">$2 \times 2$ </tex-math></inline-formula> antenna array demonstrate the efficacy of the 3D beam training algorithm achieving 50% spherical coverage efficiency realized with the 3.75ns IC delay range over 800MHz bandwidth.
An unexpected all-metal aromatic tetranuclear silver cluster in human copper chaperone Atox1

Metal clusters, such as iron–sulfur clusters, play key roles in sustaining life and are intimately involved in the functions of metalloproteins. Herein we report the formation and crystal structure of a planar square tetranuclear silver cluster when silver ions were mixed with human copper chaperone Atox1. Quantum chemical studies reveal that two Ag 5s1 electrons in the tetranuclear silver cluster fully occupy the one bonding molecular orbital, with the assumption that this Ag4 cluster is Ag42+, leading to extensive electron delocalization over the planar square and significant stabilization. This bonding pattern of the tetranuclear silver cluster represents an aromatic all-metal structure that follows a 4n + 2 electron counting rule (n = 0). This is the first time an all-metal aromatic silver cluster was observed in a protein.
Evaluating the Effect of Small Number of Snapshots and Signal-to-Noise-Ratio on the Efficiency of MUSIC Estimations

: In this study, the authors aim to discover the relation between the resolution of a uniform linear array (ULA) and the parameters involved in MUltiple SIgnal Classification (MUSIC) calculations, such as the number of antenna elements, the number of snapshots and the signal-to-noise-ratio. In this study, the number of used snapshots is limited to very small values in order to reveal the behaviour of a fast system such as the case of high speed mobile targets. The study is made through numerous simulations of different scenarios that concern cases where a small number of snapshots are assumed, for a variety of noise environments. The results lead to equations that relate the broadside resolution of a ULA with these parameters. Verification of the resulting equations shows that the behaviour of the resolution can be prescribed with sufficient precision; therefore the proposed formulae can be a useful tool for array design.
Modular All-Metal Ultrawideband Cylindrical Array for Multifunction Operation

Legacy cylindrical phased array systems are constrained to narrowband operation due to antenna element limitations amid a growing need to support advanced multifunctional platform requirements. In this paper, a notch-based all-metal ultrawideband antenna element suitable for cylindrical arrays is introduced. The proposed element is designed to operate over 2.75-10 GHz while being highly amenable to a cylindrical architecture via modularized assembly of compact scalable column facets. The primary enabling technical innovations are (1) a new shunt-loaded stepped-impedance gap design scheme to improve low-frequency performance without increasing profile and (2) the design of a tongue-and-groove azimuthal crosswall that precisely conforms to the wedge-shaped unit cell for simple yet robust cylinder assembly. For a proof-of-concept demonstration, a 120° sector array is built having a 12” outer diameter and 21 columns–each comprised of 8 single-polarized elements (168 total feed points). Measurements are presented for active phase-mode impedance and embedded element patterns of a central element, demonstrating good agreement with full-wave simulations.
Addition of Standard Enzalutamide Medication Shows Synergistic Effects on Response to [177Lu]Lu-PSMA-617 Radioligand Therapy in mCRPC Patients with Imminent Treatment Failure—Preliminary Evidence of Pilot Experience

Simple Summary In this study, we investigated co-medication with enzalutamide, a well-established newer androgen axis drug, as a potential re-sensitizer for prostate-specific membrane antigen (PSMA)-targeted radioligand therapy (RLT) in n = 10 patients with imminent treatment failure on standard 177Lu-based PSMA-RLT. After the introduction of enzalutamide medication, all patients showed a PSA decrease (7/10 patients with partial remission). This pilot experience suggests the synergistic potential of adding enzalutamide to PSMA-RLT derived from the intra-individual comparison of 177Lu-based PSMA-RLT ± enzalutamide. Abstract Well-received strong efficacy of prostate-specific membrane antigen (PSMA)-targeted radioligand therapy (RLT) does not prevent patients from either early or eventual disease progression under this treatment. In this study, we investigated co-medication with enzalutamide as a potential re-sensitizer for PSMA-RLT in patients with imminent treatment failure on standard 177Lu-based PSMA-RLT. Ten mCRPC patients who exhibited an insufficient response to conventional [177Lu]Lu-PSMA-617 RLT received oral medication of enzalutamide 160 mg/d as an adjunct to continued PSMA-RLT. Prostate-specific antigen (PSA) and standard toxicity screening lab work-up were performed to assess the treatment efficacy and safety in these individuals. The mean PSA increase under PSMA-RLT before starting the re-sensitizing procedure was 22.4 ± 26.5%. After the introduction of enzalutamide medication, all patients experienced a PSA decrease, –43.4 ± 20.0% and –48.2 ± 39.0%, after one and two cycles of enzalutamide-augmented PSMA-RLT, respectively. A total of 70% of patients (7/10) experienced partial remission, with a median best PSA response of –62%. Moreover, 5/6 enzalutamide-naïve patients and 2/4 patients who had previously failed enzalutamide exhibited a partial remission. There was no relevant enzalutamide-induced toxicity observed in this small cohort. This pilot experience suggests the synergistic potential of adding enzalutamide to PSMA-RLT derived from the intra-individual comparison of 177Lu-based PSMA-RLT ± enzalutamide.
Curious: The Desire to Know and Why Your Future Depends On It , By Ian Leslie. New York City: Basic Books, 2014

Some people may be laughing when looking at you reading in your spare time. Some may be admired of you. And some may want be like you who have reading hobby. What about your own feel? Have you felt right? Reading is a need and a hobby at once. This condition is the on that will make you feel that you must read. If you know are looking for the book enPDFd curious the desire to know and why your future depends on it as the choice of reading, you can find here.
The Rise of the ‘Immersive Virtual Online Avatar Society’: Does an Online Community Established in the Virtual Space Constitute a ‘Real’ Society?

This video article series investigates the emergence of a ‘digital haven’, that hosts a new type of society. These people are converging in digitally constructed realities for multiple reasons: some seek refuge from the harsh realities of the contemporary social order, others investigate new ways to socialise, or seek somewhere where the limitations of the real world don’t apply. Both science-fiction media and academics predicted that once virtual reality technologies (vr) reach the general consumer, society would change (Caddy, 2019; Gibson, 1984; Heim, 1993; Virtual Reality Society, 2017). In recent years the number of households with vr devices has increased (Bol, 2018; Petrock, 2021). This article suggests that vr technology has given birth to an ‘Immersive Virtual Online Avatar Society’. This society harbours many occasional visitors, but also some permanent virtual residents. Important questions arise; starting with: “Does an online community established in the virtual space constitute a ‘real’ society? ” This will be investigated with sources from virtual worlds developed with the social multi-user vr software VRChat, drawn from academic research, from video recordings of interactions in VRChat and from philosophical inquiry into the author’s personal experiences and the experiences of other users.