Miracle-dz/UniFAR-FTUs huggingface dataset:
Author's Personal Copy Computational Geometry: Theory and Applications Approximate Range Searching: the Absolute Model

a r t i c l e i n f o a b s t r a c t Range searching is a well known problem in the area of geometric data structures. We consider this problem in the context of approximation, where an approximation parameter ε > 0 is provided. Most prior work on this problem has focused on the case of relative errors, where each range shape R is bounded, and points within distance ε · diam(R) of the range's boundary may or may not be included. We consider a different approximation model, called the absolute model, in which points within distance ε of the range's boundary may or may not be included, regardless of the diameter of the range. We consider range spaces consisting of halfspaces, Euclidean balls, simplices, axis-aligned rectangles, and general convex bodies. We consider a variety of problem formulations, including range searching under general commutative semigroups, idempotent semigroups, groups, and range emptiness. We show how idempotence can be used to improve not only approximate, but also exact halfspace range searching. Our data structures are much simpler than both their exact and relative model counterparts, and so are amenable to efficient implementation.
Benefits of F.E.D. treatment in Scheuermann's disease.

PROBLEM ADDRESSED Scheuermann's disease or deforming vertebral osteochondritis affects about 5% of the population. These patients become permanent users of rehabilitation services due to their discomfort. In periods of acute pain patients can only receive palliative and not very effective treatment. PURPOSE OF THE WORK In this study 30 patients who fulfil the criteria for diagnosis of Scheuermann's disease were treated with the F.E. D. device. By using this method, a back pressure of up to 100 kg can be applied at the apex of the kyphosis, stretching the anterior common vertebral ligament in an attempt to diminish complaint. RESEARCH METHOD There were 14 men and 16 women with ages ranging from 15 to 35 years old. The mean kyphotic angle was 53 degrees (range, 45-65). Patients had an average Risser of 4.75 (range, 3-5). Schöber's test disclosed a range of values from 0 to 2.5 cm (mean, 0.78). The average period of treatment was 4 months (80 sessions of treatment). SUMMARY OF RESULTS AND FINDINGS: All the 30 patients referred disappearance of thoracic back pain after treatment. This pain relief effect was permanent for the time of follow-up. Kyphotic angle decreased from a mean of 30 degrees Cobb to 45 degrees (16% correction). A home physiotherapy program was recommended to all the patients in order to maintain dorsal elasticity as measured by Schöber's test. After treatment, the mean Schöber test value was 2.92. In cases treated during the growing period, where alterations in the spine were minimal or did not show radiographic alterations, progression of the kyphotic deformity was stopped. CONCLUSION The F.E. D. device has shown to be a promising method both for the treatment of complaints in stabilised Scheuermann's disease and control of the progression of kyphotic deformity in the growing spine.
Intervention to reduce transmission of resistant bacteria in intensive care.

BACKGROUND Intensive care units (ICUs) are high-risk settings for the transmission of methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococcus (VRE). METHODS In a cluster-randomized trial, we evaluated the effect of surveillance for MRSA and VRE colonization and of the expanded use of barrier precautions (intervention) as compared with existing practice (control) on the incidence of MRSA or VRE colonization or infection in adult ICUs. Surveillance cultures were obtained from patients in all participating ICUs; the results were reported only to ICUs assigned to the intervention. In intervention ICUs, patients who were colonized or infected with MRSA or VRE were assigned to care with contact precautions; all the other patients were assigned to care with universal gloving until their discharge or until surveillance cultures obtained at admission were reported to be negative. RESULTS During a 6-month intervention period, there were 5434 admissions to 10 intervention ICUs, and 3705 admissions to 8 control ICUs. Patients who were colonized or infected with MRSA or VRE were assigned to barrier precautions more frequently in intervention ICUs than in control ICUs (a median of 92% of ICU days with either contact precautions or universal gloving [51% with contact precautions and 43% with universal gloving] in intervention ICUs vs. a median of 38% of ICU days with contact precautions in control ICUs, P<0.001). In intervention ICUs, health care providers used clean gloves, gowns, and hand hygiene less frequently than required for contacts with patients assigned to barrier precautions; when contact precautions were specified, gloves were used for a median of 82% of contacts, gowns for 77% of contacts, and hand hygiene after 69% of contacts, and when universal gloving was specified, gloves were used for a median of 72% of contacts and hand hygiene after 62% of contacts. The mean (±SE) ICU-level incidence of events of colonization or infection with MRSA or VRE per 1000 patient-days at risk, adjusted for baseline incidence, did not differ significantly between the intervention and control ICUs (40.4±3.3 and 35.6±3.7 in the two groups, respectively; P=0.35). CONCLUSIONS The intervention was not effective in reducing the transmission of MRSA or VRE, although the use of barrier precautions by providers was less than what was required. (Funded by the National Institute of Allergy and Infectious Diseases and others; STAR*ICU ClinicalTrials.gov number, NCT00100386.).
Presence of an 80 Kilodalton Protein, Cross-Reacted with Monoclonal Antibodies to Pulmonary Surfactant Protein A, in the Human Middle Ear

We report the presence of a middle ear protein that has the same epitope as human surfactant protein A. Monoclonal antibodies (PC-6 and PE-10) against human pulmonary surfactant protein A stained faint granules of the mucosal epithelial cell cytoplasm in the orifice of the eustachian tube immunohistochemically. These antibodies also reacted with middle ear effusion of patients with otitis media with effusion by dot immunoassay, and recognized an 80 kd protein by Western blot analysis. These findings indicate that a protein immunoreactive with PC-6 and PE-10 occurs in the mucosal epithelial cells of the middle ear, and is also present in middle ear effusion. It is therefore likely that this 80 kd protein might be secreted from the mucosal epithelial cells to the middle ear cavity.
Synthetic aperture inversion with sparsity constraints

In this paper, we introduced a novel approach to SAR image formation with sparsity constraints. We formulate the sparse SAR image reconstruction problem as an Lp-norm constrained quadratic inver- sion problem and approximate it with a sequence of L2-norm constrained problems. We addressed each of L2-norm constrained problem analytically using microlocal techniques. Our inversion method can be implemented efficiently at every iteration using the fast computation of Fourier Integral Operators.
Tree-based Translation without using Parse Trees

Parse trees are indispensable to the existing tree- based translation models. However, there exist two major challenges in utilizing parse trees: 1) Fo r most language pairs, it is hard to get parse trees due to the lack of syntactic resources for training. 2) Numero us parse trees are not compatible with word alignment which is generally learned by GIZA++. Therefore, a number of useful translation rules are often excluded. To overcome these two problems, in this paper we make a great effort to bypass the parse trees and induce effective unsupervised trees for treebased translation models. Our unsupervised trees depend only on the word alignment without utilizing any syntactic resource or linguistic pars er. Hence, they are very beneficial for the translation between resource-poor languages. Our experimental results have shown that the string-to-tree translation system using our unsupervised trees significantly outperforms th e stringto-tree system using parse trees.
Improved four-layer winding design for a 12-slot 10-pole permanent magnet machine using unequal tooth coils

Fractional slot windings based on concentrated tooth coils are frequently used in today's electric machines. A drawback of these windings is the occurrence of large space harmonics in the air gap, which can cause torque ripple issues and rotor additional losses. Various provisions have been proposed in the literature to improve the air-gap harmonic content due to concentrated-winding armature reaction. This paper proposes an enhancement based on a multiple-layer design characterized by tooth coils with different number of turns. The improvement is proposed for 12-slot 10-pole permanent magnet machines but can be generalized to other possible topologies. It is shown that the proposed approach leads to the same air-gap field harmonic content as for a dual-three-phase dual-layer winding with all space harmonics reduced by the same coefficient (equal to 0.928). Pros and contras of the proposed design with respect to other existing improved solutions are highlighted in the paper. Comparisons and assessments are provided based on Finite Element Analysis (FEA).
Feedback Overhead-Aware Fast Distributed Selection Scheme for Multi-Node Wireless Systems

Opportunistic selection is a practically appealing technique that is used in multi-node wireless systems to maximize throughput, implement proportional fairness, etc. However, selection is challenging since the information about a node's channel gains is often available only locally at each node and not centrally. We propose a novel multiple access-based distributed selection scheme that generalizes the best features of the timer scheme, which requires minimal feedback but does not always guarantee successful selection, and the fast splitting scheme, which requires more feedback but guarantees successful selection. The proposed scheme's design explicitly accounts for feedback time overheads unlike the conventional splitting scheme and guarantees selection of the user with the highest metric unlike the timer scheme. We analyze and minimize the average time including feedback required by the scheme to select. With feedback overheads, the proposed scheme is scalable and considerably faster than several schemes proposed in the literature. Furthermore, the gains increase as the feedback overhead increases.
Output Containment Control for High-Order Linear Time-Invariant Swarm Systems

Output containment control problems for high-order linear time-invariant swarm systems are investigated. Firstly, output containment protocols are presented for leaders and followers respectively to make sure that the output dynamics property of leaders can be improved and the outputs of followers can converge to the convex hull formed by the outputs of leaders. Then output containment problems for swarm systems are transformed into stability problems, and sufficient conditions for swarm systems to achieve output containment are proposed. Moreover, an approach to determine the gain matrix in the output containment protocol is given, which has less calculation complexity. Finally, numerical simulations are presented to demonstrate theoretical results.
Influence of a superficial layer in the quantitative spectroscopic study of strongly scattering media.

We have experimentally investigated the meaning of the effective optical absorption [mu(a)((eff))] and the reduced scattering [mu(s)? ((eff))] coefficients measured on the surfaces of two-layered turbid media, using the diffusion equation for homogeneous, semi-infinite media. We performed frequency-domain spectroscopy in a reflectance geometry, using source-detector distances in the range 1.5-4.5 cm. We measured 100 samples, each made of one layer (thickness in the range 0.08-1.6 cm) on top of one semi-infinite block. The optical properties of the samples were similar to those of soft tissues in the near infrared. We found that the measured effective optical coefficients are representative of the underlying block if the superficial layer is less than ~0.4 cm thick, whereas they are representative of the superficial layer if it is more than ~1.3 cm thick.
X-RAY EMISSION FROM THE FU ORIONIS STAR V1735 CYGNI

The variable star V1735 Cyg (=Elias 1-12) lies in the IC 5146 dark cloud and is a member of the class of FU Orionis objects whose dramatic optical brightenings are thought to be linked to episodic accretion. We report the first X-ray detections of V1735 Cyg and a deeply embedded class I protostar lying 24″ to its northeast. X-ray spectra obtained with EPIC on XMM-Newton reveal very high-temperature plasma (kT > 5 keV) in both objects, but no large flares. Such hard X-ray emission is not anticipated from accretion shocks and is a signature of magnetic processes. We place these new results into the context of what is presently known about the X-ray properties of FU Orionis stars and other accreting young stellar objects.
Evaluation of UHMWPE Component under Various Positions for UKA

The development of artificial joints is now considered quite mature, and the main treatment for osteoarthritis. However, in recent unicompartmental knee arthroplasty (UKA) clinical follow-ups, complications due to wear of polyethylene (PE) tibial components still exist. Therefore, this study focused on the possibility of avoiding and minimizing damage to the PE tibial component. Currently, the most common problem in the application of UKA is the malresection of the tibial plateau, often resulting in malpositioning of the tibial implant. This positioning problem may be the main reason for advanced wear and dislocation of a PE tibial component. In this study, finite element analysis (FEA) was used to study the stress change of malpositioned PE tibial components in order to better understand the damaging mechanism on PE tibial components. It was found that anatomically designed unicompartmental knee prostheses (UKP) allowed more positioning error in varus tilt than symmetrically designed ones. And both should avoid any positional error greater than 10° valgus tilt. Otherwise, increased wear of PE tibial components would result in shortened lifetime of the artificial joint.
A Method for Selecting Constrained Hand-Printed Character Shapes for Machine Recognition

Since handwritten characters vary in shape and writing-stroke sequence, it is desirable to develop a standard set of characters that are of high quality, so that not only are they easy to write, but they are also most suitable for machine recognition. A database of more than 100 000 alphanumeric patterns was assembled. It consisted of 174 models of the alphanumeric characters written by both left-handed and right-handed subjects. Based on frequency density and distance measurements, a nietric called the dispersion factor was computed to rank the various models. The principle of the metric is discussed, and results are given indicating the high quality models of the alphanumerics.
The childhood experience of care and abuse questionnaire (CECA.Q): validation in a community series.

BACKGROUND Childhood neglect and abuse, as measured by retrospective interview, is highly predictive of psychiatric disorder in adult life and has an important role in aetiological models. However, such measures are labour-intensive, costly, and thus restricted to relatively modest sample sizes. A compact self-report assessment of childhood experience is invaluable for research screening purposes and large-scale survey investigation. METHOD A self-report questionnaire (CECA.Q) was developed to mirror an existing validated interview measure: the childhood experience of care and abuse (CECA). The questionnaire assessed lack of parental care (neglect and antipathy), parental physical abuse, and sexual abuse from any adult before age 17. A high-risk series of 179 London women were interviewed using the CECA together with the PSE psychiatric assessment, and completed the CECA.Q at later follow-up. Repeat CECA.Qs were returned for 111 women and 99 women additionally completed the parental bonding instrument (PBI; Parker, Tupling, & Brown, 1979). RESULTS Satisfactory internal scale consistency was achieved on the CECA.Q for antipathy (alpha = .81) and neglect (alpha = .80) scales. There was satisfactory test-retest for both care and abuse scales. Significant associations were found between CECA.Q scales and the parallel interview scales with cut-offs determined for high sensitivity and specificity. CECA.Q neglect and antipathy scales were also significantly related to PBI parental care. CECA.Q scales were significantly related to lifetime history of depression. Optimal cut-off scores revealed significant odds ratios (average of 2) for individual scales and depression. When indices were compiled to reflect peak severity of each type of adversity across perpetrator, odds-ratios increased (average 3). A dose-response effect was evident with the number of types of neglect/abuse and rate of lifetime depression. CONCLUSION The CECA.Q shows satisfactory reliability and validity as a self-report measure for adverse childhood experience. The merits of having parallel questionnaire and interview instruments for both research and clinical work are discussed.
Numerical simulation and analysis of a single flat-faced thin fiber optic tweezers

A novel flat-faced thin fiber optic tweezers is proposed. It was fabricated by heating and drawing method under the condition of laying aside the conventional focusing method. With this fiber optic probe, the single fiber optic tweezers realized trapping a yeast cell in water. The experiment results were in good agreement with the simulated results which were carried out using FDTD method.
A Chernoff convexification for chance constrained MIMO training sequence design

In this paper, multiple input multiple output (MIMO) channel estimation formulated as a chance constrained problem is investigated. The chance constraint is based on the presumption that the estimated channel can be used in an application to achieve a given performance level with a prescribed probability. The aforementioned performance level is dictated by the particular application of interest. The resulting optimization problem is known to be nonconvex in most cases. To this end, convexification is attempted by employing a Chernoff inequality. As an application, we focus on the estimation of MIMO wireless channels based on a general L-optimality type of performance measure.
Generalized Method for Solving the Permutation Problem in Frequency-Domain Blind Source Separation of Convolved Speech Signals

The blind speech separation of convolutive mixtures can be performed in the time-frequency domain. The separation problem becomes to a set of instantaneous mixing problems, one for each frequency bin, that can be solved independently by any appropiated instantaneous ICA algorithm. However, the arbitrary order of the estimated sources in each frequency, known as permutation problem, has to be solved to succesfully recover the original sources. This paper deals with the permutation problem in the general case of N sources and N observations. The proposed method combines a correlation approach based on the amplitude correlation property of speech signals, and an optimal pairing scheme to align the permuted solutions. Our method is robust to arti ﬁ cially permuted speech signals. Experimental re-sults on simulated convolutive mixtures show the effectiveness of the proposed method in terms of quality of separated signals by objective and perceptually measures.
MORBID THOUGHTS AND SUICIDAL IDEATION IN IRAQ WAR VETERANS: THE ROLE OF DIRECT AND INDIRECT KILLING IN COMBAT

Although research has identified numerous risk factors for military suicide, the contribution of combat exposure to suicide risk has not been clearly established. Previous studies finding no association of suicidality with combat exposure have employed overgeneral measures of exposure, which do not differentiate among the varieties of combat experiences. This study disaggregated the forms of combat exposure to assess the contribution of combat‐related killing to morbid thoughts and suicidal ideation (MTSI) in National Guard troops deployed to Iraq.
Ethylene Potentiates Sulfur-Mediated Reversal of Cadmium Inhibited Photosynthetic Responses in Mustard

The potential of exogenous ethylene and sulfur (S) in reversal of cadmium (Cd)-inhibited photosynthetic and growth responses in mustard (Brassica juncea L. cv. Pusa Jai Kisan) were studied. Plants grown with 50 μM Cd showed increased superoxide and H2O2 accumulation and lipid peroxidation together with increased activity of 1-aminocyclopropane carboxylic acid synthase (ACS) and ethylene production and inhibition of photosynthesis and growth. Application of 1 mM SO42- or 200 μL L-1 ethephon (ethylene source) influenced photosynthetic and growth performance equally in presence or absence of Cd. However, their combined application synergistically improved photosynthetic performance more in presence of Cd and reduced oxidative stress (lower superoxide and H2O2 accumulation) by decreasing ethylene and glucose sensitivity with the increase in cysteine and methionineand a non-proteinogenic thiol (reduced glutathione; GSH) contents. The central role of ethylene in potentiating S-mediated reversal of Cd-induced oxidative stress was evident with the use of ethylene action inhibitor, norbornadiene (NBD). The application of NBD resulted in decreased thiol production and photosynthetic responses. This suggests that ethylene promotes the effects of S in reversal of adverse effects of Cd, and thus, ethylene modulation may be considered as potential tool to substantiate the S effects in reversal of Cd inhibited photosynthesis and growth in mustard.
The computation of optical flow

Two-dimensional image motion is the projection of the three-dimensional motion of objects, relative to a visual sensor, onto its image plane. Sequences of time-orderedimages allow the estimation of projected two-dimensional image motion as either instantaneous image velocities or discrete image displacements. These are usually called the optical flow field or the image velocity field. Provided that optical flow is a reliable approximation to two-dimensional image motion, it may then be used to recover the three-dimensional motion of the visual sensor (to within a scale factor) and the three-dimensional surface structure (shape or relative depth) through assumptions concerning the structure of the optical flow field, the three-dimensional environment, and the motion of the sensor. Optical flow may also be used to perform motion detection, object segmentation, time-to-collision and focus of expansion calculations, motion compensated encoding, and stereo disparity measurement. We investigate the computation of optical flow in this survey: widely known methods for estimating optical flow are classified and examined by scrutinizing the hypothesis and assumptions they use. The survey concludes with a discussion of current research issues.