LLukas22/scidocs huggingface dataset:
Measuring an operator's maneuverability performance in the haptic teleoperation of multiple robots

In this paper, we investigate the maneuverability performance of human teleoperators on multi-robots. First, we propose that maneuverability performance can be assessed by a frequency response function that jointly considers the input force of the operator and the position errors of the multi-robot system that is being maneuvered. Doing so allows us to evaluate maneuverability performance in terms of the human teleoperator's interaction with the controlled system. This allowed us to effectively determine the suitability of different haptic cue algorithms in improving teleoperation maneuverability. Performance metrics based on the human teleoperator's frequency response function indicate that maneuverability performance is best supported by a haptic feedback algorithm which is based on an obstacle avoidance force.
Optical Character Recognition

This paper describes two implementations in optical character recognition using template matching method and feature extraction method followed by support vector machine classification. With proper image preprocessing, the texts are segmented into isolated characters and the correlations between a single character and a given set of templates are computed to find the similarities and then identify the input character. In the second method, features extracted from the segmented characters are used to train the SVM classifiers, which are later, tested by a test set of handwritten digits. Keywords—Optical character recognition; template matching; feature extraction; support vector machine.
Named entity recognition approaches

Recognizing and extracting exact name entities, like Persons, Locations and Organizations are very useful to mining information from text. Learning to extract names in natural language text is called Named Entity Recognition (NER) task. Proper named entity recognition and extraction is important to solve most problems in hot research area such as Question Answering and Summarization Systems, Information Retrieval, Machine Translation, Video Annotation, Semantic Web Search and Bioinformatics. Nowadays more researchers use different methods such as Rule-base NER, Machine Learning-base NER and Hybrid NER, to identify names from text. In this paper, we review these methods and compare them based on precision in recognition and also portability using the Message Understanding Conference (MUC) named entity definition and its standard data set to find their strength and weakness of each these methods. We proposed a robust and novel Machine Learning Based method called Fuzzy support Vector Machine (FSVM) for NER
Performance Evaluation of Bridgeless PFC Boost Rectifiers

In this paper, a systematic review of bridgeless power factor correction (PFC) boost rectifiers, also called dual boost PFC rectifiers, is presented. Performance comparison between the conventional PFC boost rectifier and a representative member of the bridgeless PFC boost rectifier family is performed. Loss analysis and experimental efficiency evaluation for both CCM and DCM/CCM boundary operations are provided.
Occupational stress and turnover intention: implications for nursing management.

BACKGROUND
The main purpose of this study was to explore the status of occupational stress among hospital nurses in Isfahan, Iran. It also aimed to examine the relationship between nurses' occupational stress and their intention to leave the hospital.


METHODS
The study employed a cross-sectional research design. A validated questionnaire was used to collect data from 296 nurses. Respondents were asked to rate the intensity of 30 common occupational stressors using a five-point scale.


RESULTS
A third of hospital nurses rated their occupational stress high. The major sources of stress were inadequate pay, inequality at work, too much work, staff shortage, lack of promotion, job insecurity and lack of management support. More than 35% of nurses stated that they are considering leaving the hospital, if they could find another job opportunity. Occupational stress was positively associated with nurses' turnover intentions.


CONCLUSION
Hospital managers should develop and apply appropriate policies and strategies to reduce occupational stress and consequently nurses' turnover intention.
Camera handoff and placement for automated tracking systems with multiple omnidirectional cameras

1077-3142/$ see front matter 2009 Elsevier Inc. A doi:10.1016/j.cviu.2009.04.004 * Corresponding author. Fax: +1 865 974 5459. E-mail addresses: cchen10@utk.edu (C.-H. Chen dpage@utk.edu (D. Page), besma@utk.edu (B. Abidi), ak abidi@utk.edu (M. Abidi). In a multi-camera surveillance system, both camera handoff and placement play an important role in generating an automated and persistent object tracking, typical of most surveillance requirements. Camera handoff should comprise three fundamental components, time to trigger handoff process, the execution of consistent labeling, and the selection of the next optimal camera. In this paper, we design an observation measure to quantitatively formulate the effectiveness of object tracking so that we can trigger camera handoff timely and select the next camera appropriately before the tracked object falls out of the field of view (FOV) of the currently observing camera. In the meantime, we present a novel solution to the consistent labeling problem in omnidirectional cameras. A spatial mapping procedure is proposed to consider both the noise inherent to the tracking algorithms used by the system and the lens distortion introduced by omnidirectional cameras. This does not only avoid the tedious process, but also increases the accuracy, to obtain the correspondence between omnidirectional cameras without human interventions. We also propose to use the Wilcoxon Signed-Rank Test to improve the accuracy of trajectory association between pairs of objects. In addition, since we need a certain amount of time to successfully carry out the camera handoff procedure, we introduce an additional constraint to optimally reserve sufficient cameras’ overlapped FOVs for the camera placement. Experiments show that our proposed observation measure can quantitatively formulate the effectiveness of tracking, so that camera handoff can smoothly transfer objects of interest. Meanwhile, our proposed consistent labeling approach can perform as accurately as the geometry-based approach without tedious calibration processes and outperform Calderara’s homography-based approach. Our proposed camera placement method exhibits a significant increase in the camera handoff success rate at the cost of slightly decreased coverage, as compared to Erdem and Sclaroff’s method without considering the requirement on overlapped FOVs. 2009 Elsevier Inc. All rights reserved.
Wrapper design for embedded core test

A wrapper is a thin shell around the core, that provides the switching between functional, and core-internal and core-external test modes. Together with a test access mechanism (TAM), the core test wrapper forms the test access infrastructure to embedded reusable cores. Various company-internal as well as industry-wide standardized but scalable wrappers have been proposed. This paper deals with the design of such core test wrappers. It gives a general architecture for wrappers, and describes how a wrapper can be built up from a library of wrapper cells which are selected on basis of the terminal types of the core. We show that the ordering and partitioning of wrapper cells and core-internal scan chains over TAM chains determines the test time of the core. A heuristic approach for the NP-hard problem of partitioning the TAM chain items for minimal test time is presented and its usage is illustrated by means of an example. Finally we sketch how wrapper generation and verification can be automated.
The Oxford-Durham study: a randomized, controlled trial of dietary supplementation with fatty acids in children with developmental coordination disorder.

BACKGROUND
Developmental coordination disorder (DCD) affects approximately 5% of school-aged children. In addition to the core deficits in motor function, this condition is associated commonly with difficulties in learning, behavior, and psychosocial adjustment that persist into adulthood. Mounting evidence suggests that a relative lack of certain polyunsaturated fatty acids may contribute to related neurodevelopmental and psychiatric disorders such as dyslexia and attention-deficit/hyperactivity disorder. Given the current lack of effective, evidence-based treatment options for DCD, the use of fatty acid supplements merits investigation.


METHODS
A randomized, controlled trial of dietary supplementation with omega-3 and omega-6 fatty acids, compared with placebo, was conducted with 117 children with DCD (5-12 years of age). Treatment for 3 months in parallel groups was followed by a 1-way crossover from placebo to active treatment for an additional 3 months.


RESULTS
No effect of treatment on motor skills was apparent, but significant improvements for active treatment versus placebo were found in reading, spelling, and behavior over 3 months of treatment in parallel groups. After the crossover, similar changes were seen in the placebo-active group, whereas children continuing with active treatment maintained or improved their progress.


CONCLUSIONS
Fatty acid supplementation may offer a safe efficacious treatment option for educational and behavioral problems among children with DCD. Additional work is needed to investigate whether our inability to detect any improvement in motor skills reflects the measures used and to assess the durability of treatment effects on behavior and academic progress.
Protein Surface Representation and Comparison : New Approaches in Structural Proteomics

5.
Comparison of thoracolumbosacral orthosis and no orthosis for the treatment of thoracolumbar burst fractures: interim analysis of a multicenter randomized clinical equivalence trial.

OBJECT
The authors compared the outcome of patients with thoracolumbar burst fractures treated with and without a thoracolumbosacral orthosis (TLSO).


METHODS
As of June 2002, all consecutive patients satisfying the following inclusion criteria were considered eligible for this study: 1) the presence of an AO Classification Type A3 burst fractures between T-11 and L-3, 2) skeletal maturity and age < 60 years, 3) admission within 72 hours of injury, 4) initial kyphotic deformity < 35 degrees, and 5) no neurological deficit. The study was designed as a multicenter prospective randomized clinical equivalence trial. The primary outcome measure was the score based on the Roland-Morris Disability Questionnaire assessed at 3 months postinjury. Secondary outcomes are assessed until 2 years of follow-up have been reached, and these domains included pain, functional outcome and generic health-related quality of life, sagittal alignment, length of hospital stay, and complications. Patients in whom no orthotic was used were encouraged to ambulate immediately following randomization, maintaining "neutral spinal alignment" for 8 weeks. The patients in the TLSO group began being weaned from the brace at 8 weeks over a 2-week period.


RESULTS
Sixty-nine patients were followed to the primary outcome time point, and 47 were followed for up to 1 year. No significant difference was found between treatment groups for any outcome measure at any stage in the follow-up period. There were 4 failures requiring surgical intervention, 3 in the TLSO group and 1 in the non-TLSO group.


CONCLUSIONS
This interim analysis found equivalence between treatment with a TLSO and no orthosis for thoracolumbar AO Type A3 burst fractures. The influence of a brace on early pain control and function and on long-term 1- and 2-year outcomes remains to be determined. However, the authors contend that a thoracolumbar burst fracture, in exclusion of an associated posterior ligamentous complex injury, is inherently a very stable injury and may not require a brace.
ENHANCING READING COMPREHENSION THROUGH TASK-BASED WRITING ACTIVITIES: AN EXPERIMENTAL STUDY

_______________ Task-based learning is a popular topic in ELT/EFL circles nowadays. It is accepted by its proponents as a flourishing method that may replace Communicative Language Learning. However, it can also be seen as an adventure just because there are almost no experimental studies to tackle questions concerning applicability of Task-based Learning. In this paper we try to find out whether or not task-based writing activities have a positive effect upon reading comprehension in English as a foreign language. An experimental study was conducted in order to scrutinize implications of Task-based Learning. Two groups of 28 students were chosen through random cluster sampling. Both groups were given a pre-test and a post-test. The pre-test and post-test mean scores of the experimental group, which got treatment through task-based writing activities, were compared with those of the control group, which was taught English through traditional methods. The effect of the treatment upon reading comprehension was analyzed through two-way ANOVA. The results provide a theoretical justification for the claims of the proponents of Task-based Learning. Theoretical Background Researchers have been discussing and asserting that the Communicative Language Teaching, a method which has a worldwide use nowadays, has some important drawbacks. Having been based on principles of first language acquisition, it lacks a proper theoretical basis about language learning as a cognitive process of skill acquisition and a clear research about second language acquisition (Klapper, 2003:33-34). It puts much emphasis on ‘communication’, pair work, information-gap activities, and intensive target language use (Pica, 2000; Richards and Rodgers, 1996). However, teachers and practitioners have encountered some problems while applying it. One of the most important problems was the demotivation of students because of intensive target language use. Task-based Learning is a flourishing method which can compensate for the weaknesses of the Communicative Language Teaching mentioned above and which is seen as an alternative to it by researchers (Klapper, 2003:35-36). ‘Task’ is taken as a goal-oriented activity which has a clear purpose and which involves achieving an outcome, creating a final
Survival analysis of composite Dahl restorations provided to manage localised anterior tooth wear (ten year follow-up)

Objective To evaluate ten-year survival and clinical performance of resin-based composite restorations placed at increased vertical dimension as a 'Dahl' type appliance to manage localised anterior tooth wear.Design A prospective survival analysis of restorations provided at a single centre.Setting UK NHS hospital and postgraduate institute.Methods The clinical performance of 283 composite resin restorations on 26 patients with localised anterior tooth wear was reviewed after a ten year follow-up period. The study used modified United States Public Health Service (USPHS) criteria for assessing the restorations. Survival of the restorations was analysed using Kaplan-Meier survival curves, the log-rank test, and the Cox proportional hazards regression analysis.Results The results indicated that the median survival time for composite resin restorations was 5.8 years and 4.75 years for replacement restorations when all types of failure were considered. The restorations commonly failed as a result of wear, fracture and marginal discoloration. The factors that significantly influenced the survival of these restorations were the incisal relationship, aetiology, material used, and the nature of opposing dentition. The biological complications associated with this treatment regime were rare. Patient satisfaction remained high despite the long term deterioration of the restorations.Conclusion With some degree of maintenance, repeated use of composite resin restorations to treat localised anterior tooth wear at an increased occlusal vertical dimension is a viable treatment option over a ten-year period.
Universe’s coolest lab set to open up quantum world

NASA’s Cold Atom Laboratory will allow physicists to play with quantum phenomena like never before.NASA’s Cold Atom Laboratory will allow physicists to play with quantum phenomena like never before.
Failure mode and effects analysis using fuzzy evidential reasoning approach and grey theory

0957-4174/$ see front matter 2010 Elsevier Ltd. A doi:10.1016/j.eswa.2010.09.110 ⇑ Corresponding author. Tel.: +86 (0)21 2023 1668; E-mail address: liulong@tongji.edu.cn (L. Liu). Failure mode and effects analysis (FMEA) is a methodology to evaluate a system, design, process or service for possible ways in which failures (problems, errors, etc.) can occur. The two most important issues of FMEA are the acquirement of FMEA team members’ diversity opinions and the determination of risk priorities of the failure modes that have been identified. First, the FMEA team often demonstrates different opinions and knowledge from one team member to another and produces different types of assessment information because of its cross-functional and multidisciplinary nature. These different types of information are very hard to incorporate into the FMEA by the traditional model and fuzzy logic approach. Second, the traditional FMEA determines the risk priorities of failure modes using the risk priority numbers (RPNs) by multiplying the scores of the risk factors like the occurrence (O), severity (S) and detection (D) of each failure mode. The method has been criticized to have several shortcomings. In this paper, we present an FMEA using the fuzzy evidential reasoning (FER) approach and grey theory to solve the two problems and improve the effectiveness of the traditional FMEA. As is illustrated by the numerical example, the proposed FMEA can well capture FMEA team members’ diversity opinions and prioritize failure modes under different types of uncertainties. 2010 Elsevier Ltd. All rights reserved.
Template Adaptation for Face Verification and Identification

Face recognition performance evaluation has traditionally focused on one-to-one verification, popularized by the Labeled Faces in the Wild dataset [1] for imagery and the YouTubeFaces dataset [2] for videos. In contrast, the newly released IJB-A face recognition dataset [3] unifies evaluation of one-to-many face identification with one-to-one face verification over templates, or sets of imagery and videos for a subject. In this paper, we study the problem of template adaptation, a form of transfer learning to the set of media in a template. Extensive performance evaluations on IJB-A show a surprising result, that perhaps the simplest method of template adaptation, combining deep convolutional network features with template specific linear SVMs, outperforms the state-of-the-art by a wide margin. We study the effects of template size, negative set construction and classifier fusion on performance, then compare template adaptation to convolutional networks with metric learning, 2D and 3D alignment. Our unexpected conclusion is that these other methods, when combined with template adaptation, all achieve nearly the same top performance on IJB-A for templatebased face verification and identification.
Vector filtering for color imaging

Vector processing operations use essential spectral and spatial information to remove noise and localize microarray spots. The proposed fully automated vector technique can be easily implemented in either hardware or software; and incorporated in any existing microarray image analysis and gene expression tool.
Distributed Sources, Accelerated Universe, Consciousness and Quantum Entanglement

It is shown that such diverse phenomena as accelerated Universe, consciousness and quantum entanglement are connected by the concept of distributed sources and imaginary (particularly, tachyon) fields.
Torque ripple analysis and dynamic performance of a space vector modulation based control method for AC-drives

A constant switching frequency torque control method is presented in this paper, that uses flux error vector based space vector modulation (SVM) to achieve steady state and dynamic control of torque. The effect of SVM switching on torque ripple has been analyzed using "flux ripple vectors". This approach is used to develop an insight of torque ripple and to estimate it for any operating angular velocity. We propose a method of compensation to maintain steady state control of torque in the overmodulation region of operation. During torque dynamic, the optimum maximum switching state vector is selected. This gives a response similar to that obtained using direct torque control (DTC) and direct self control (DSC) methods. The proposed method is verified experimentally.
Shuttle lifting of the nose: a minimally invasive approach for nose reshaping.

BACKGROUND
Suspension sutures are commonly used in numerous cosmetic surgical procedures. Several authors have described the use of such sutures as a part of classical rhinoplasty. On the other hand, it is not uncommon to see patients seeking nasal surgery for only a minimal hump deformity combined with an underrotated, underprojecting tip, which does not necessarily require all components of rhinoplasty. With the benefit of the suture suspension technique described here, such simple tip deformities can be reshaped percutaneously via minimal incisions.


OBJECTIVE
In this study, the author describes an original technique based on the philosophy of vertical suspension lifts, achieving the suspension of the nasal tip with a percutaneous purse-string suture applied through small access punctures.


PATIENTS AND METHODS
Between December 2005 and December 2008, 86 patients were selected to undergo rhinoplasty using the author's shuttle lifting technique. The procedure was performed with a double-sided needle or shuttle, smoothly anchoring the lower lateral cartilages in a vertical direction to the glabellar periosteum, excluding the skin envelope.


RESULTS
Mean follow-up was 13 months, with a range of eight to 24 months. Outcomes were satisfactory in all but 12 cases, of which seven found the result inadequate; two of those patients underwent a definitive rhinoplasty operation. Five patients requested that the suture be detached because of an overexaggerated appearance. Operative time was less than 15 minutes in all patients, with an uneventful rapid recovery.


CONCLUSIONS
As a minimally invasive nasal reshaping procedure, shuttle lifting is a good choice to achieve long-lasting, satisfactory results in selected patients with minimal hump deformity and an underrotated tip. The significance of this technique lies in the fact that it is one of very few office-based minimally invasive alternatives for aesthetic nasal surgery, with a recovery period of two to three days.
Empirical studies of agile software development: A systematic review

Agile software development represents a major departure from traditional, plan-based approaches to software engineering. A systematic review of empirical studies of agile software development up to and including 2005 was conducted. The search strategy identified 1996 studies, of which 36 were identified as empirical studies. The studies were grouped into four themes: introduction and adoption, human and social factors, perceptions on agile methods, and comparative studies. The review investigates what is currently known about the benefits and limitations of, and the strength of evidence for, agile methods. Implications for research and practice are presented. The main implication for research is a need for more and better empirical studies of agile software development within a common research agenda. For the industrial readership, the review provides a map of findings, according to topic, that can be compared for relevance to their own settings and situations. 2008 Elsevier B.V. All rights reserved.