LLukas22/scidocs huggingface dataset:
Bifurcation of switched nonlinear dynamical systems

This paper proposes a method to trace bifurcation sets for a piecewise-defined differential equation. In this system, the trajectory is continuous, but it is not differentiable at break points of the characteristics. We define the Poincaŕ e mapping by suitable local sections and local mappings, and thereby it is possible to calculate bifurcation parameter values. As an illustrated example, we analyze the behavior of a two-dimensional nonlinear autonomous system whose state space is constrained on two half planes concerned with state-dependent switching characteristics. From investigation of bifurcation diagrams, we conclude that the tangent and global bifurcations play an important role for generating various periodic solutions and chaos. Some theoretical results are confirmed by laboratory experiments.
Psychometric properties of a new questionnaire to assess eating in the absence of hunger in children and adolescents

BACKGROUND
Eating in the absence of hunger (EAH), studied in the context of laboratory paradigms, has been associated with obesity and is predictive of excess weight gain in children. However, no easily administered questionnaire exists to assess for EAH in children.


OBJECTIVE
We developed an Eating in the Absence of Hunger Questionnaire to be administered to children and adolescents (EAH-C) and examined psychometric properties of the measure.


DESIGN
Two-hundred and twenty-six obese (BMI > or = 95th percentile for age and sex, n=73) and non-obese (BMI<95th percentile, n=153) youth (mean age+/-S.D., 14.4+/-2.5 y) completed the EAH-C and measures of loss of control and emotional eating, and general psychopathology. Temporal stability was assessed in a subset of participants.


RESULTS
Factor analysis generated three subscales for the EAH-C: Negative Affect, External Eating, and Fatigue/Boredom. Internal consistency for all subscales was established (Cronbach's alphas: 0.80-0.88). The EAH-C subscales had good convergent validity with emotional eating and loss of control episodes (p's<0.01). Obese children reported higher Negative Affect subscale scores than non-obese children (p</=0.05). All three subscales were positively correlated with measures of general psychopathology. Intra-class correlation coefficients revealed temporal stability for all subscales (ranging from 0.65 to 0.70, p's<0.01). We conclude that the EAH-C had internally consistent subscales with good convergent validity and temporal stability, but may have limited discriminant validity. Further investigations examining the EAH-C in relation to laboratory feeding studies are required to determine whether reported EAH is related to actual energy intake or to the development of excess weight gain.
Sirolimus conversion may suppress viral replication in hepatitis C virus-positive renal transplant candidates.

OBJECTIVES
Hepatitis C virus in renal transplant recipients is an independent risk factor for sickness and death. It has been shown that one might limit hepatitis C virus progression in liver transplant recipients with sirolimus-based immunosuppression. The mammalian target of rapamycin is an influential molecule for the anti-hepatitis C virus action of interferon. We report our experience with sirolimus conversion in hepatitis C virus-positive patients with chronic allograft nephropathy regarding hepatic and hematologic effects that might affect its future use.


MATERIALS AND METHODS
Twenty-five patients who had received renal transplants with anti-hepatitis C virus-positive and normal liver function were enrolled. Ten patients had allograft dysfunction because of cyclosporine nephrotoxicity. Sirolimus was initiated at 2 mg/d and adjusted to 6 to 8 ng/mL. Cyclosporine was gradually tapered and then stopped; 15 patients were used as a control group. Sirolimus-related hepatitis was defined as a rise in liver transferases or alkaline phosphatase or bilirubin over twice the upper limit of normal. Viral replication was defined as elevated liver enzymes and increasing viral load and/or biopsy-proven hepatitis C virus active hepatitis.


RESULTS
After conversion, there was a reduction of hemoglobin and hematocrit. In 1 patient, the immunosuppressive regimen was changed back to cyclosporine owing to anemia and hepatotoxicity leading to prompt return of hematocrit and liver enzymes to their original values. One of 10 antihepatitis C virus-positive patients (10.0%) developed sirolimus-associated hepatotoxicity, compared with 2 patients in the control group (13%). Sirolimus patients showed a significant decrease in the HCV PCR levels from 700 000 to 400 000 IU/mL; P < .001, compared to 680 000 to 660 000 IU/mL in cyclosporine patients; P = NS, with comparable levels of transaminases


CONCLUSIONS
Our data suggest that sirolimus has the potential to suppress viral replication in hepatitis C virus-positive renal transplant candidates.
Total productive maintenance : literature review and directions

Purpose – The purpose of this paper is to review the literature on Total Productive Maintenance (TPM) and to present an overview of TPM implementation practices adopted by the manufacturing organizations. It also seeks to highlight appropriate enablers and success factors for eliminating barriers in successful TPM implementation. Design/methodology/approach – The paper systematically categorizes the published literature and then analyzes and reviews it methodically. Findings – The paper reveals the important issues in Total Productive Maintenance ranging from maintenance techniques, framework of TPM, overall equipment effectiveness (OEE), TPM implementation practices, barriers and success factors in TPM implementation, etc. The contributions of strategic TPM programmes towards improving manufacturing competencies of the organizations have also been highlighted here. Practical implications – The literature on classification of Total Productive Maintenance has so far been very limited. The paper reviews a large number of papers in this field and presents the overview of various TPM implementation practices demonstrated by manufacturing organizations globally. It also highlights the approaches suggested by various researchers and practitioners and critically evaluates the reasons behind failure of TPM programmes in the organizations. Further, the enablers and success factors for TPM implementation have also been highlighted for ensuring smooth and effective TPM implementation in the organizations. Originality/value – The paper contains a comprehensive listing of publications on the field in question and their classification according to various attributes. It will be useful to researchers, maintenance professionals and others concerned with maintenance to understand the significance of TPM.
The hot strip mill production scheduling problem: A tabu search approach

The Hot Strip Mill Production Scheduling Problem is a hard problem that arises in the steel industry when scheduling steel coil production. It can be modeled as a generalization of the Prize Collecting Traveling Salesman Problem with multiple and conflicting objectives and constraints. In this paper we formulate this problem as a mathematical program and propose a heuristic method to determine good approximate solutions. The heuristic is based on Tabu Search and a new idea called " Cannibalization ". Computational results on production data from Dofasco are presented and analyzed. Comparison with actual production schedules indicates that the proposed method could produce significantly better schedules. 0 1998 Elsevier Science B.V. All rights reserved.
Resting and ADL-induced dynamic hyperinflation explain physical inactivity in COPD better than FEV1.

BACKGROUND
Physical activity and health status deteriorate early in the course of chronic obstructive pulmonary disease (COPD). This can only partially be explained by the degree of airflow limitation. Changes in (resting and dynamic) lung volumes are known to be associated with functional impairments and thus might influence physical activity level. The aim of the present cross-sectional study was to explore the contribution of dynamic hyperinflation during daily life activities (ADL) in the decline in physical activity.


METHODS
Airflow limitation and inspiratory capacity at rest to total lung capacity ratio (IC/TLC) as a measure of resting hyperinflation were measured in 59 patients with COPD (GOLD I-IV). Mean daily physical activity was assessed with a tri-axial accelerometer. Measurements of dynamic hyperinflation during ADL (ΔIC and inspiratory reserve volume at end ADL) were performed at patients' home using a portable breath-by-breath system.


RESULTS
Multiple regression analysis showed that resting as well as ADL-induced dynamic hyperinflation independently contributed to decreased daily physical activity, together explaining 45.8% of the variance in physical activity. In contrast to hyperinflation, the severity of airflow limitation (FEV1) appeared to have no unique part in explaining how physically (in-) active patients were.


CONCLUSIONS
The presence of resting hyperinflation and occurrence of dynamic hyperinflation during ADL contribute to reduced physical activity levels in patients with COPD, independently of the degree of airflow limitation.
Detection and Localization of Small Drones Using Commercial Off-the-Shelf FPGA Based Software Defined Radio Systems

The aim of this paper is to determine the possibilities of using commercial off the shelf FPGA based Software Defined Radio Systems to develop a system capable of detecting and locating small drones.
Biomodification to dentin by a natural crosslinker improved the resin-dentin bonds.

OBJECTIVES
Transient collagen cross-linking treatment by proanthocyanidins (PA), a natural crosslinker, was proved to increase the cross-linking degree and ultimate tensile strength of demineralised dentin. The present study aimed to investigate whether transient pretreatment by PA-based preconditioner can improve the resin-dentin bonds of various etch and rinse adhesives. The influence of solvent type, PA concentration and treatment duration were examined.


METHODS
PA-based preconditioners were prepared by adding powdered grape seed extract, rich in PA, to various solvents at different concentrations. They were used on demineralised dentin before the application of the bonding agent. Bond strength, failure modes and degree of conversion were evaluated via microtensile testing, field emission scanning electron microscopy and Fourier transform infrared spectroscopy, respectively.


RESULTS
Collagen cross-linking treatment by PA-based preconditioners presented a concentration- and time-dependent increase in dentin bond strength even in reduced, clinically applicable treatment duration. PA preconditioning improved bond strength of the tested water/ethanol-based adhesive better than the water/acetone-based system. Mixed fracture was the most prevalent failure mode happened on the top of the hybrid layer in PA-pretreated specimens, whilst at the bottom in non-treated controls. The degree of conversion was not significantly affected by PA pretreatment.


CONCLUSIONS
Transient PA preconditioning improved resin-dentin bonds without compromise on the curing behaviours of the tested adhesives.
The Leeds Evaluation of Efficacy of Detoxification Study (LEEDS) Prisons Project Study: protocol for a randomised controlled trial comparing methadone and buprenorphine for opiate detoxification

BACKGROUND
In the United Kingdom (UK), there is an extensive market for the class 'A' drug heroin and many heroin users spend time in prison. People addicted to heroin often require prescribed medication when attempting to cease their drug use. The most commonly used detoxification agents in UK prisons are currently buprenorphine and methadone, both are recommended by national clinical guidelines. However, these agents have never been compared for opiate detoxification in the prison estate and there is a general paucity of research evaluating the most effective treatment for opiate detoxification in prisons. This study seeks to address this paucity by evaluating the most routinely used interventions amongst drug users within UK prisons.


METHODS/DESIGN
This study uses randomised controlled trial methodology to compare the open use of buprenorphine and methadone for opiate detoxification, given in the context of routine care, within three UK prisons. Prisoners who are eligible and give informed consent will be entered into the trial. The primary outcome will be abstinence status eight days after detoxification, as determined by a urine test. Secondary outcomes will be recorded during the detoxification and then at one, three and six months post-detoxification.


TRIAL REGISTRATION
Current Controlled Trials ISRCTN58823759.
Crowd Analysis Using Computer Vision Techniques

This article presents a survey on crowd analysis using computer vision techniques, covering different aspects such as people tracking, crowd density estimation, event detection, validation, and simulation. It also reports how related the areas of computer vision and computer graphics should be to deal with current challenges in crowd analysis.
Source location of air pollution and cardiac autonomic function: Trajectory cluster analysis for exposure assessment

Although many studies report that exposure to air pollution harms health, few have examined associations between pollution sources and health outcomes. We hypothesized that pollution originating in different locations has different associations with heart rate variability (HRV) among 497 men from the Normative Aging Study in Boston, Massachusetts. We identified the paths that air masses traveled (‘back-trajectories’) before arriving in Boston on the days the men were examined. Next, we classified these trajectories into six clusters. We examined whether the association of measured air pollutants with HRV (standard deviation of normal-to-normal intervals, high-frequency power (HF) and low-frequency power (LF), and LF/HF ratio) differed by cluster. We also examined whether the clusters alone (not considering air pollution measurements) showed different associations with HRV. The effects of black carbon (BC) on all HRV measures were strongest on days with southwest trajectories. Subjects who were examined on days where air parcels came from west had the strongest associations with ozone. All particle pollutants (particulate matter <2.5 μm in aerodynamic diameter (PM2.5), BC, and sulfates) were associated with increased LF/HF ratio on days with relatively short trajectories, which are related to local, slow-moving air masses. We also observed significant increases in LF/HF in days where air came from the northwest and west, compared to north trajectory days. Health effects associated with exposure to air pollution can be evaluated using pollutant concentrations as well as aspects of the pollution mixture captured by identifying locations where air masses originate. Independent effects of both these indicators of pollution exposure were seen on cardiac autonomic function.
Aurora: Providing Trusted System Services for Enclaves On an Untrusted System

Intel SGX provisions shielded executions for securitysensitive computation, but lacks support for trusted system services (TSS), such as clock, network and filesystem. This makes enclaves vulnerable to Iago attacks [12] in the face of a powerful malicious system. To mitigate this problem, we present Aurora, a novel architecture that provides TSSes via a secure channel between enclaves and devices on top of an untrusted system, and implement two types of TSSes, i.e. clock and end-to-end network. We evaluate our solution by porting SQLite and OpenSSL into Aurora, experimental results show that SQLite benefits from a microsecond accuracy trusted clock and OpenSSL gains end-to-end secure network with about 1ms overhead.
EC-CENTRIC: An Energy- and Context-Centric Perspective on IoT Systems and Protocol Design

The radio transceiver of an Internet of Things (IoT) device is often where most of the energy is consumed. For this reason, most research so far has focused on low-power circuit and energy-efficient physical layer designs, with the goal of reducing the average energy per information bit required for communication. While these efforts are valuable per se, their actual effectiveness can be partially neutralized by ill-designed network, processing, and resource management solutions, which can become a primary factor of performance degradation, in terms of throughput, responsiveness, and energy efficiency. The objective of this paper is to describe an energy-centric and context-aware optimization framework that accounts for the energy impact of the fundamental functionalities of an IoT system and that proceeds along three main technical thrusts: 1) balancing signal-dependent processing techniques (compression and feature extraction) and communication tasks; 2) jointly designing channel access and routing protocols to maximize the network lifetime; and 3) providing self-adaptability to different operating conditions through the adoption of suitable learning architectures and of flexible/reconfigurable algorithms and protocols. After discussing this framework, we present some preliminary results that validate the effectiveness of our proposed line of action, and show how the use of adaptive signal processing and channel access techniques allows an IoT network to dynamically tune lifetime for signal distortion, according to the requirements dictated by the application.
3. Rectification: Party Discipline, Intellectual Remolding, And The Formation Of A Political Community

The story of rectification is one of both political idealism (the transformation of people's minds in the formation of a new political community) and political persecution, utopian Maoist philosophy and bald Maoist politics. Rectification offered individuals the appealing possibility of joining with the dynamic flow of history. As Apter and Cheek point out, the Yan'an Rectification shows at once the Janus-faced nature of the Communist movement - idealist and collectivist on the one hand, and repressive and intolerant on the other - and the complex interrelationship between these two faces. Rectification is the principal tool, therefore, for forging a collective community with shared values, something necessary for mass mobilization and social transformation, but also for the foundation of a totalitarian state. Keywords: Chinese Communist movement; Maoist philosophy; party discipline; political community; Yan'an Rectification
Factors Affecting Adoption of Electronic Banking : An Analysis of the Perspectives of Banks ' Customers Dr .

Electronic banking services are being used with increasing frequency in most countries, including Jordan. Although previous studies have confirmed the importance for such services for both banks and customers, the level of electronic banking services' adoption in Jordan is still low. This study aims to identify and understand factors that affect bank customers' use of electronic banking services. This study integrates technology acceptance model (TAM) with the theory of planned behavior model (TPB) and incorporates five cultural dimensions and perceived risk to propose a theoretical model. The primary data were collected from 387 valid questionnaires which were distributed to random banking customers in all 26 licensed banks in Jordan. Multiple regression analysis was employed to test the hypotheses. The main findings of the study are: uncertainty avoidance has a positive and significant impact on perceived ease of use and perceived usefulness. Perceived risk has the stronger impact on customers' attitude, which in turn influences customers' intention to use electronic banking services.
Chess Q & A : Question Answering on Chess Games

We introduce a new dataset1 for the evaluation of models addressing reasoning tasks. For a position in a chess game, we provide question and answer pairs, an image of the board, and the sequence of moves up to that position. We hope this synthetic task will improve our understanding in memory based Deep Learning with posed challenges.
Color-based object recognition

The purpose is to arrive at recognition of multicolored objects invariant to a substantial change in viewpoint, object geometry and illumination. Assuming dichromatic reflectance and white illumination, it is shown that normalized color rgb, saturation S and hue H, and the newly proposed color models c 1 c 2 c 3 and l 1 l 2 l 3 are all invariant to a change in viewing direction, object geometry and illumination. Further, it is shown that hue H and l 1 l 2 l 3 are also invariant to highlights. Finally, a change in spectral power distribution of the illumination is considered to propose a new color constant color model m 1 m 2 m 3 . To evaluate the recognition accuracy differentiated for the various color models, experiments have been carried out on a database consisting of 500 images taken from 3-D multicolored man-made objects. The experimental results show that highest object recognition accuracy is achieved by l 1 l 2 l 3 and hue H followed by c 1 c 2 c 3 , normalized color rgb and m 1 m 2 m 3 under the constraint of white illumination. Also, it is demonstrated that recognition accuracy degrades substantially for all color features other than m 1 m 2 m 3 with a change in illumination color. The recognition scheme and images are available within the PicToSeek and Pic2Seek systems on-line at: http: //www.wins.uva.nl/research/isis/zomax/. ( 1999 Pattern Recognition Society. Published by Elsevier Science Ltd. All rights reserved.
Management and outcome of 35 cases with foetal/neonatal alloimmune neutropenia.

AIM
The aim of this study was to provide an overview of foetal/neonatal alloimmune neutropenia (FNAIN), together with advice on the clinical management.


METHODS
Neutrophil serology in the Netherlands is centralised at Sanquin Diagnostic Services. We examined FNAIN cases between January 1, 1991, and July 1, 2013, to determine the number of cases diagnosed, the relationship with human neutrophil antigen (HNA) antibody, the clinical presentation and therapeutic interventions.


RESULTS
We identified 35 FNAIN cases. The detected HNA antibodies were as follows: anti-HNA-1a (n = 7), anti-HNA-1b (n = 12), anti-HNA-1c (n = 2), anti-HNA-2 (n = 8), anti-HNA-3a (n = 1), anti-HNA-5a (n = 1) and anti-FcγRIIIb (n = 4). No infections were diagnosed in 14 neonates, and the other 21 neonates suffered from omphalitis (n = 6), urinary tract infection (n = 1), candida mucositis (n = 1), fever of unknown origin (n = 6) and sepsis (n = 7, 20%). Parity, gestational age, birthweight, neutrophil counts and antibody specificity were not significantly different for cases with, and without, infections. All the infected children were treated with antibiotics. No children died.


CONCLUSION
More than half (21) of the 35 cases of FNAIN presented with infections and most implicated were HNA-1a, HNA-1b and HNA-2. Treatment with antibiotics seemed adequate. A neonatal neutropenia workflow model for use in neonatal intensive care units is presented.