LLukas22/scidocs huggingface dataset:
Changes in teacher-student relationships.

BACKGROUND
Although teacher-student relationships lie at the heart of students' schooling experience, fundamental questions regarding these relationships remain unanswered.


AIMS
This study investigates three related questions about these relationships: To what extent do they change from the beginning to the end of a school year? Are any emergent changes associated with shifts in students' academic or motivational outcomes? Are certain 'upstream' factors associated with improvements or declines in teacher-student relationships?


SAMPLE
We investigate these questions with a sample of middle school students (N = 119) and their teachers (N = 30). METHODS. Through a novel approach which accounts for both perspectives within teacher-student relationships, we assess these relationships at the beginning and end of the school year. Using multi-level models, we examine how changes in these relationships are associated with changes in students' grades, homework completion rates, self-efficacy, and effort. In addition, we examine associations with two potential precursors to teacher-student relationships: students' accuracy in taking their teachers' perspective and their perceptions of similarity to their teachers.


RESULTS
We find that substantial changes occur in these relationships from the beginning to the end of the year; these changes are associated with shifts in important student outcomes; and changes in students' social perspective taking accuracy and perceived similarity to their teachers correspond with changes in teacher-student relationships.


CONCLUSIONS
Given the malleability of teacher-student relationships and their importance for key achievement and motivational outcomes, we advocate for researchers to conduct field experiments to inform how to improve these critical relationships.
A Novel Compact Ultra-Wideband (UWB) Wide Slot Antenna with via Holes

Abstract—A novel compact ultra-wideband (UWB) wide slot antenna with via holes is presented for UWB applications. The antenna is composed of a trapezoidal slot on the ground plane, a rectangular patch in the center of the slot and three via holes connecting the rectangular patch and the microstrip feed-line. The antenna is successfully designed, implemented, and measured. The measured results show that the proposed antenna with compact size of 27.0mm×29.0 mm×1.0mm achieves good performance, such as an impedance matching bandwidth of 111.7% (|S11| ≤ −10 dB), constant gain and stable radiation patterns over its whole frequency range.
RESEARCH ARTICLE Questions of quality in repositories of open educational resources: a literature review

Open educational resources (OER) are teaching and learning materials which are freely available and openly licensed. Repositories of OER (ROER) are platforms that host and facilitate access to these resources. ROER should not just be designed to store this content ! in keeping with the aims of the OER movement, they should support educators in embracing open educational practices (OEP) such as searching for and retrieving content that they will reuse, adapt or modify as needed, without economic barriers or copyright restrictions. This paper reviews key literature on OER and ROER, in order to understand the roles ROER are said or supposed to fulfil in relation to furthering the aims of the OER movement. Four themes which should shape repository design are identified, and the following 10 quality indicators (QI) for ROER effectiveness are discussed: featured resources; user evaluation tools; peer review; authorship of the resources; keywords of the resources; use of standardised metadata; multilingualism of the repositories; inclusion of social media tools; specification of the creative commons license; availability of the source code or original files. These QI form the basis of a method for the evaluation of ROER initiatives which, in concert with considerations of achievability and long-term sustainability, should assist in enhancement and development.
Cloud Computing Security: What Changes with Software-Defined Networking?

Broadly construed, Software-Defined Networking (SDN) refers to the use of a standards-based open architecture and its supporting open source and open interfaces technologies to enable the deployment, management, and operation of networks. While traditional network management relies on vendor-specific hardware, protocols, and software, SDN systems are architected to have well-defined control and data planes offering flexible management interfaces. The enhanced control enabled by SDN opens opportunities for better cloud security engineering. At the same time, new vulnerabilities are potentially exposed as new technologies are introduced. This chapter discusses how SDN impacts cloud security, and potential risks that need to be addressed when SDN is deployed within and across clouds.
Electro-thermal simulation of 1200 V 4H-SiC MOSFET short-circuit SOA†

The purpose of this paper is to introduce a dynamic electro-thermal simulation and analysis approach for device design and short-circuit safe-operating-area (SOA) characterization using a physics-based electro-thermal Saber®* model. Model parameter extraction, simulation, and validation results are given for several commercially available 4H-silicon carbide (SiC) power MOSFETs with a voltage rating of 1200 V and with current ratings of 31.6 A and 42 A. The electro-thermal model and simulations are used to analyze the short-circuit SOA including the measured failure time (tfailure) and simulated device internal junction temperature (Tj) at failure for different gate voltages (VGS) and drain voltages (VDS).
The PSA testing dilemma: GPs' reports of consultations with asymptomatic men: a qualitative study

BACKGROUND
The National Health Service Prostate Cancer Risk Management Programme (PCRMP) has recommended that screening for prostate cancer is available for asymptomatic men, on the understanding that they have been provided with full and balanced information about the advantages and limitations of the prostate-specific antigen (PSA) test. Guidance has been distributed to all GPs in England and Wales to assist in the provision of information to men. This study aimed to elicit GPs' accounts of their discussions with asymptomatic men who consult with concerns about prostate cancer in order to identify the degree to which the PCRMP guidance was reflected in these consultations.


METHODS
Qualitative interview study. Semi-structured telephone interviews with 21 GPs from 18 GP practices in Oxfordshire.


RESULTS
All GPs reported undertaking some discussion with asymptomatic men about the PSA test. They described focussing most of the discussion on the false-positive and false-negative rates of the test, and the risks associated with a prostate biopsy. They reported less discussion of the potential for diagnosing indolent cancers, the dilemmas regarding treatment options for localised prostate cancer and the potential benefits of testing. Considerable variation existed between GPs in their accounts of the degree of detail given, and GP's presentation of information appeared to be affected by their personal views of the PSA test.


CONCLUSION
The GPs in this study appear to recognise the importance of discussions regarding PSA testing; however, a full and balanced picture of the associated advantages and limitations does not seem to be consistently conveyed. Factors specific to PSA testing which appeared to have an impact on the GPs' discussions were the GP's personal opinions of the PSA test, and the need to counter men's primarily positive views of the benefits of PSA testing. Awareness of the impact of their views on the consultations may help GPs give men a more balanced presentation of the benefits and limitations of the PSA test.
Sleep Architecture When Sleeping at an Unusual Circadian Time and Associations with Insulin Sensitivity

UNLABELLED
Circadian misalignment affects total sleep time, but it may also affect sleep architecture. The objectives of this study were to examine intra-individual effects of circadian misalignment on sleep architecture and inter-individual relationships between sleep stages, cortisol levels and insulin sensitivity. Thirteen subjects (7 men, 6 women, age: 24.3±2.5 y; BMI: 23.6±1.7 kg/m²) stayed in a time blinded respiration chamber during three light-entrained circadian cycles (3x21h and 3x27h) resulting in a phase advance and a phase delay. Sleep was polysomnographically recorded. Blood and salivary samples were collected to determine glucose, insulin and cortisol concentrations. Intra-individually, a phase advance decreased rapid eye movement (REM) sleep and slow-wave sleep (SWS), increased time awake, decreased sleep and REM sleep latency compared to the 24h cycle. A phase delay increased REM sleep, decreased stage 2 sleep, increased time awake, decreased sleep and REM sleep latency compared to the 24h cycle. Moreover, circadian misalignment changed REM sleep distribution with a relatively shorter REM sleep during the second part of the night. Inter-individually, REM sleep was inversely associated with cortisol levels and HOMA-IR index. Circadian misalignment, both a phase advance and a phase delay, significantly changed sleep architecture and resulted in a shift in rem sleep. Inter-individually, shorter REM sleep during the second part of the night was associated with dysregulation of the HPA-axis and reduced insulin sensitivity.


TRIAL REGISTRATION
International Clinical Trials Registry Platform NTR2926 http://apps.who.int/trialsearch/
Animaux et arbres guingois

Betrema, J. and J.G. Penaud, Animaux et arbres guingois, Theoretical Computer Science 117 (1993) 67-89. The directed animals are put in a one-to-one correspondence with a kind of lop-sided trees, called guingois trees. Through this bijection, we get a simple coding for the animals; we show that this coding is related to a representation of animals by heaps of dimers.
Embedding gesture recognition into airplane seats for in-flight entertainment

In order to reduce both psychological and physical stress in air travel, sensors are integrated into airplane seats to detect gestures as input for in-flight entertainment systems. The content provided by the entertainment systems helps to reduce psychological stress, and gesture recognition is used as input for the content. The use of this system thus also stimulates passengers in limited seating space to make movements that would result in the reduction of physical stress. Preliminary user evaluation shows that users of the concept have significantly more active calf muscle pump activity in comparison with current situations and that users feel more active and less fatigued after a long period of sitting in the same position.
Effect of Vitamin D Supplementation on Glycemic Control in Patients With Type 2 Diabetes (SUNNY Trial): A Randomized Placebo-Controlled Trial.

OBJECTIVE
Low vitamin D status has been associated with impaired glycemic control in patients with type 2 diabetes. The purpose of our study was to evaluate the effect of vitamin D supplementation on glycemic control in patients with type 2 diabetes.


RESEARCH DESIGN AND METHODS
This randomized, double-blind, placebo-controlled trial was conducted in 275 adult patients with type 2 diabetes without insulin treatment. Patients were randomly assigned to receive either vitamin D3 (50,000 IU/month) or placebo for 6 months. To assess the primary outcome of the study, change in HbA(1c), we performed a linear regression analysis.


RESULTS
Mean baseline serum 25-hydroxyvitamin D [25(OH)D] increased from 60.6 ± 23.3 to 101.4 ± 27.6 nmol/L and 59.1 ± 23.2 to 59.8 ± 23.2 nmol/L in the vitamin D and placebo group, respectively. Mean baseline HbA(1c) was 6.8 ± 0.5% (51 ± 6 mmol/mol) in both groups. After 6 months, no effect was seen on HbA(1c) (mean difference: β = 0.4 [95% CI -0.6 to 1.5]; P = 0.42) and other indicators of glycemic control (HOMA of insulin resistance, fasting insulin, and glucose) in the entire study population. Subgroup analysis in patients with a serum 25(OH)D <50 nmol/L or an HbA(1c) level >7% (53 mmol/mol) did not differ the results.


CONCLUSIONS
In a well-controlled group of patients with type 2 diabetes, intermittent high-dose vitamin D supplementation did not improve glycemic control.
Phase II Study of Rituximab in Combinat ion With CHOP Chemotherapy in Pat ients With Prev ious ly Untreated , Aggress ive Non-Hodgkin ’ s Lymphoma

Purpose: To determine the safety and efficacy of the combination of the chimeric anti-CD20 antibody Rituxan (rituximab, IDEC-C2B8; Genentech Inc, South San Francisco, CA) and cyclophosphamide, doxorubicin, vincristine, and prednisone (CHOP) chemotherapy in patients with aggressive non-Hodgkin’s lymphoma (NHL). Patients and Methods: Thirty-three patients with previously untreated advanced aggressive B-cell NHL received six infusions of Rituxan (375 mg/m2 per dose) on day 1 of each cycle in combination with six doses of CHOP chemotherapy given on day 3 of each cycle. Results: The ORR by investigator assessment confirmed by the sponsor was 94% (31 of 33 patients). Twenty patients experienced a complete response (CR) (61%), 11 patients had a partial response (PR) (33%), and two patients were classified as having progressive disease. In the 18 patients with an International Prognostic Index (IPI) score > 2, the combination of Rituxan plus CHOP achieved an ORR of 89% and CR of 56%. The median duration of response and time to progression had not been reached after a median observation time of 26 months. Twenty-nine of 31 responding patients remained in remission during this follow-up period, including 15 of 16 patients with an IPI score > 2. The most frequent adverse events attributed to Rituxan were fever and chills, primarily during the first infusion. Rituxan did not seem to compromise the ability of patients to tolerate CHOP; all patients completed the entire six courses of the combination. The bcl-2 translocation of blood or bone marrow was positive at baseline in 13 patients; 11 patients had follow-up specimens obtained (eight CR, three PR), and all had a negative bcl-2 status after therapy. Only one patient has reconverted to bcl-2 positivity, and all patients remain in clinical remission. Conclusion: This is the first report to demonstrate the safety and efficacy of the Rituxan chimeric anti-CD20 antibody in combination with standard-dose CHOP in the treatment of aggressive B-cell lymphoma. The clinical responses are at least comparable to those achieved with CHOP alone with no significant added toxicity. The presence or absence of the bcl-2 translocation did not affect the ability of patients to achieve a CR with this regimen. The ability to achieve sustained remissions in patients with an IPI score > 2 warrants further investigation with a randomized study. J Clin Oncol 19:389-397. © 2001 by American Society of Clinical Oncology.
Personality Recognition in Source Code Working Note: Team BESUMich

In this paper, we describe the results of source code personality identification from Team BESUMich. We used a set of simple, robust, scalable, and language-independent features on the PR-SOCO dataset. Using leave-one-coder-out strategy, we obtained minimum RMSE on the test data for extroversion, and competitive results for other personality traits.
Paul and the Religious Experience of Reconciliation: Diasporic Community and Creole Consciousness

In the ancient world as in contemporary times, religion provides a vital context in which people become who they are and establish themselves with a unique identity. This process of constructing the self is not only a psychological process and a phenomenological reality; it can also be a deeply religious experience.
Open source computer-vision based guidance system for UAVs on-board decision making

The use of UAVs for remote sensing tasks; e.g. agriculture, search and rescue is increasing. The ability for UAVs to autonomously find a target and perform on-board decision making, such as descending to a new altitude or landing next to a target is a desired capability. Computer-vision functionality allows the Unmanned Aerial Vehicle (UAV) to follow a designated flight plan, detect an object of interest, and change its planned path. In this paper we describe a low cost and an open source system where all image processing is achieved on-board the UAV using a Raspberry Pi 2 microprocessor interfaced with a camera. The Raspberry Pi and the autopilot are physically connected through serial and communicate via MAVProxy. The Raspberry Pi continuously monitors the flight path in real time through USB camera module. The algorithm checks whether the target is captured or not. If the target is detected, the position of the object in frame is represented in Cartesian coordinates and converted into estimate GPS coordinates. In parallel, the autopilot receives the target location approximate GPS and makes a decision to guide the UAV to a new location. This system also has potential uses in the field of Precision Agriculture, plant pest detection and disease outbreaks which cause detrimental financial damage to crop yields if not detected early on. Results show the algorithm is accurate to detect 99% of object of interest and the UAV is capable of navigation and doing on-board decision making.
Prospective blinded comparison of wireless capsule endoscopy and multiphase CT enterography in obscure gastrointestinal bleeding.

PURPOSE
To compare the performance of multiphase computed tomographic (CT) enterography with that of capsule endoscopy in a group of patients with obscure gastrointestinal bleeding (OGIB).


MATERIALS AND METHODS
This prospective HIPAA-compliant study was approved by the institutional review board and the institutional conflict of interest committee. All patients provided written informed consent. Two radiologists, blinded to clinical data and results of capsule endoscopy, interpreted images from CT enterography independently, with discordant interpretations resolved by consensus. Results were compared with those from a reference standard (surgery or endoscopy) and clinical follow-up. Sensitivity and 95% confidence intervals were calculated for each modality.


RESULTS
Fifty-eight adult patients, referred for the evaluation of OGIB (occult, 25 patients [43%]; overt, 33 patients [57%]), underwent both tests. A small bowel bleeding source was identified in 16 of the 58 patients (28%). The sensitivity of CT enterography was significantly greater than that of capsule endoscopy (88% [14 of 16 patients] vs 38% [six of 16 patients], respectively; P = .008), largely because it depicted more small bowel masses (100% [nine of nine patients] vs 33% [three of nine patients], respectively; P = .03). No additional small bowel tumors were discovered during the follow-up period (range, 5.6-45.9 months; mean, 16.6 months).


CONCLUSION
In this referral population, the sensitivity of CT enterography for detecting small bowel bleeding sources and small bowel masses was significantly greater than that of capsule endoscopy. On the basis of these findings, the addition of multiphase CT enterography to the routine diagnostic work-up of patients with OGIB should be considered, particularly in patients with negative findings at capsule endoscopy.
Recommended dose of arbekacin, an aminoglycoside against methicillin-resistant Staphylococcus aureus, does not achieve desired serum concentration in critically ill patients with lowered creatinine clearance.

OBJECTIVE
To define the pharmacokinetics of arbekacin (ABK), an aminoglycoside, in patients with acutely lowered renal function.


METHODS
We measured the serum concentrations of ABK, using fluorescence polarization immunoassay, in 10 critically ill patients (patient group) and six healthy volunteers (control group). Data were analysed with a two-compartment model and parameters were estimated by the Bayesian method. The Mann-Whitney U-test or chi-squared test was used as appropriate (P < 0.05).


RESULTS
Creatinine clearance (CCR), measured or estimated using Cockcroft and Gault's formula of the patient group (CCR: 58 +/- 13 mL/min), was significantly lower than that of the control group (CCR: 99 +/- 8 mL/min). However, despite the low CCR, even the maintenance ABK dosage for normal CCR did not elevate the highest serum level (C(max)) to the effective range in the patient group. Although the ABK clearance (CL) did not differ between the groups, the patients' distribution volume (V(d)) increased significantly compared with the control. The transfer rate constant from central to peripheral compartment (k(12)) in the patient group was much higher than that in the control.


CONCLUSION
In critically ill patients with lowered CCR, the ABK dose for normal CCR subjects does not elevate its serum concentration to effective levels because of augmented V(d) caused by increased k(12). The present results hypothesize that adjustment of antibiotic dosing according to CCR further lowers C(max) in critically ill patients with reduced CCR.
The Children’s Attention Project: a community-based longitudinal study of children with ADHD and non-ADHD controls

BACKGROUND
Attention-Deficit/Hyperactivity Disorder (ADHD) affects approximately 5% of children worldwide and results in significant impairments in daily functioning. Few community-ascertained samples of children with ADHD have been studied prospectively to identify factors associated with differential outcomes. The Children's Attention Project is the first such study in Australia, examining the mental health, social, academic and quality of life outcomes for children with diagnostically-confirmed ADHD compared to non-ADHD controls. The study aims to map the course of ADHD symptoms over time and to identify risk and protective factors associated with differential outcomes.


METHODS/DESIGN
The sample for this prospective longitudinal study is being recruited across 43 socio-economically diverse primary schools across Melbourne, Australia. All children in Grade 1, the second year of formal schooling (6-8 years), are screened for ADHD symptoms using independent parent and teacher reports on the Conners' 3 ADHD index (~N = 5260). Children screening positive for ADHD by both parent and teacher report, and a matched sample (gender, school) screening negative, are invited to participate in the longitudinal study. At baseline this involves parent completion of the NIMH Diagnostic Interview Schedule for Children IV (DISC-IV) to confirm likely ADHD diagnostic status and identify other mental health difficulties, direct child assessments (cognitive, academic, language and executive functioning; height and weight) and questionnaires for parents and teachers assessing outcomes, as well as a broad range of risk and protective factors (child, parent/family, teacher/school, and socio-economic factors). Families will be initially followed up for 3 years.


DISCUSSION
This study is the first Australian longitudinal study of children with ADHD and one of the first community-based longitudinal studies of diagnostically confirmed children with ADHD. The study's examination of a broad range of risk and protective factors and ADHD-related outcomes has the potential to inform novel strategies for intervention and prevention.