LLukas22/scidocs huggingface dataset:
A Dual-Band Highly Miniaturized Patch Antenna

A highly miniaturized dual-band patch antenna is proposed for small form factor devices. The antenna is designed to cover two wireless local area network bands at 2.4 and 5.2 GHz. The antenna is miniaturized using a shorting post and a novel defected ground structure (DGS). The patch size is 8.8 × 10 mm2, which means 74% miniaturization ratio is achieved at 2.4 GHz. The dual-band property is achieved by etching a U-slot in the ground as a part of the proposed DGS. The antenna is fabricated on Rogers RO4350 board, and its radiation characteristics are measured. The measured results have good agreement with simulated ones.
An Efficient Implementation of the Bellman-Ford Algorithm for Kepler GPU Architectures

Finding the shortest paths from a single source to all other vertices is a common problem in graph analysis. The Bellman-Ford's algorithm is the solution that solves such a single-source shortest path (SSSP) problem and better applies to be parallelized for many-core architectures. Nevertheless, the high degree of parallelism is guaranteed at the cost of low work efficiency, which, compared to similar algorithms in literature (e.g., Dijkstra's) involves much more redundant work and a consequent waste of power consumption. This article presents a parallel implementation of the Bellman-Ford algorithm that exploits the architectural characteristics of recent GPU architectures (i.e., NVIDIA Kepler, Maxwell) to improve both performance and work efficiency. The article presents different optimizations to the implementation, which are oriented both to the algorithm and to the architecture. The experimental results show that the proposed implementation provides an average speedup of <inline-formula><tex-math notation="LaTeX">$5 \times$ </tex-math><alternatives><inline-graphic xlink:type="simple" xlink:href="bombieri-ieq1-2485994.gif"/></alternatives></inline-formula> higher than the existing most efficient parallel implementations for SSSP, that it works on graphs where those implementations cannot work or are inefficient (e.g., graphs with negative weight edges, sparse graphs), and that it sensibly reduces the redundant work caused by the parallelization process.
Osteomyelitis of a long bone due to Fusobacterium nucleatum and Actinomyces meyeri in an immunocompetent adult: A case report and literature review

BACKGROUND
Fusobacterium species are uncommon causes of osteomyelitis. These organisms are normal flora of the oral cavity. Therefore, they mostly cause osteomyelitis of the head and neck. Hematogenous osteomyelitis at distant sites other than the head and neck has rarely been reported in pediatric or immunocompromised patients. Here, we report the first case of osteomyelitis of a long bone combined with a muscle abscess due to Fusobacterium nucleatum in an otherwise healthy adult.


CASE PRESENTATION
A 59-year-old Korean man was admitted for pain and swelling of the right lower leg, which had been persistent for two weeks. Magnetic resonance imaging showed osteomyelitis of the right fibula with a surrounding muscle abscess of the right lower leg. Incision and drainage was performed, and repetitive tissue cultures grew F. nucleatum. In this patient, it was presumed that recurrent periodontitis caused hematogenous seeding of F. nucleatum to a distant site leading to osteomyelitis with a muscle abscess. The patient was successfully treated with intravenous ampicillin-sulbactam for three weeks and oral amoxicillin-clavulanate for eight weeks. He also underwent repeated surgical drainage. He has no evidence of recurrence after seven months of follow-up.


CONCLUSIONS
Clinicians should be aware that F. nucleatum could be the etiologic agent of hematogenous osteomyelitis of a long bone in an immunocompetent patient.
Comparison of 61 Sequenced Escherichia coli Genomes

Escherichia coli is an important component of the biosphere and is an ideal model for studies of processes involved in bacterial genome evolution. Sixty-one publically available E. coli and Shigella spp. sequenced genomes are compared, using basic methods to produce phylogenetic and proteomics trees, and to identify the pan- and core genomes of this set of sequenced strains. A hierarchical clustering of variable genes allowed clear separation of the strains into clusters, including known pathotypes; clinically relevant serotypes can also be resolved in this way. In contrast, when in silico MLST was performed, many of the various strains appear jumbled and less well resolved. The predicted pan-genome comprises 15,741 gene families, and only 993 (6%) of the families are represented in every genome, comprising the core genome. The variable or ‘accessory’ genes thus make up more than 90% of the pan-genome and about 80% of a typical genome; some of these variable genes tend to be co-localized on genomic islands. The diversity within the species E. coli, and the overlap in gene content between this and related species, suggests a continuum rather than sharp species borders in this group of Enterobacteriaceae.
Socially-Aware Venue Recommendation for Conference Participants

Current research environments are witnessing high enormities of presentations occurring in different sessions at academic conferences. This situation makes it difficult for researchers (especially juniors) to attend the right presentation session(s) for effective collaboration. In this paper, we propose an innovative venue recommendation algorithm to enhance smart conference participation. Our proposed algorithm, Social Aware Recommendation of Venues and Environments (SARVE), computes the Pearson Correlation and social characteristic information of conference participants. SARVE further incorporates the current context of both the smart conference community and participants in order to model a recommendation process using distributed community detection. Through the integration of the above computations and techniques, we are able to recommend presentation sessions of active participant presenters that may be of high interest to a particular participant. We evaluate SARVE using a real world dataset. Our experimental results demonstrate that SARVE outperforms other state-of-the-art methods.
Simvastatin reduces the expression of adhesion molecules in circulating monocytes from hypercholesterolemic patients.

OBJECTIVE
The intercellular adhesion molecule-1 (ICAM-1/CD54) and its ligand, CD11a/CD18, mediate endothelial adhesion of leukocytes and their consecutive transmigration. Anti-inflammatory effects of statins are considered to be exerted in part through inhibition of leukocyte-endothelial interactions. We investigated the in vivo effects of simvastatin treatment in hypercholesterolemic patients and the influence of various statins on expression of cellular adhesion molecules in vitro.


METHODS AND RESULTS
A total number of 107 hypercholesterolemic patients were treated with 20 mg (n=52) or 40 mg (n=55) of simvastatin daily. After 6 weeks of treatment, peripheral blood mononuclear cells (PBMCs) expressed lower amounts of CD54-, CD18-, and CD11a-mRNA compared with pretreatment values. Surface expression of CD54 and CD18/CD11a on CD14+-monocytes also decreased significantly in both groups of patients. Moreover, simvastatin, atorvastatin, and cerivastatin were found to downregulate tumor necrosis factor (TNF)-alpha-induced expression of CD54 and CD18/CD11a in isolated PBMCs obtained from normal donors as well as TNF-alpha-dependent expression of these CAMs in cultured human umbilical vein endothelial cells (HUVECs). Furthermore, all three statins were found to reduce the binding of PBMCs to TNF-alpha-stimulated HUVECs in vitro.


CONCLUSIONS
Statin-induced inhibition of expression of CD54 and CD18/CD11a in PBMCs and HUVECs with consecutive loss of adhesive function may contribute to the anti-inflammatory effects of these drugs and some of their beneficial clinical activities.
Performance of the Glasgow-Blatchford score in predicting clinical outcomes and intervention in hospitalized patients with upper GI bleeding.

BACKGROUND
Data regarding the utility of the Glasgow-Blatchford bleeding score (GBS) in hospitalized patients with upper GI hemorrhage are limited.


OBJECTIVE
To evaluate the performance of the GBS in predicting clinical outcomes and the need for interventions in patients with upper GI hemorrhage.


DESIGN
Prospective observational study.


SETTING
Single, tertiary-care endoscopic center.


PATIENTS
Between July 2010 and July 2012, 888 consecutive hospitalized patients managed for upper GI hemorrhage were entered into the study.


INTERVENTION
GBS and Rockall scores.


MAIN OUTCOME MEASUREMENTS
GBS and Rockall scores were prospectively calculated. The performance of these scores to predict the need for interventions and outcomes was assessed by using a receiver operating characteristic curve.


RESULTS
Endoscopy was performed in 708 patients (80%). A total of 286 patients (40.3%) required endoscopic therapy, and 29 patients (3.8%) underwent surgery. GBS and post-endoscopy Rockall scores (post-E RS) were superior to pre-endoscopy Rockall scores in predicting the need for endoscopic therapy (area under the curve [AUC] 0.76 vs 0.76 vs 0.66, respectively) and rebleeding (AUC 0.71 vs 0.64 vs 0.57). The GBS was superior to Rockall scores in predicting the need for blood transfusion (AUC 0.81 vs 0.70 vs 0.68) and surgery (AUC 0.71 vs 0.64 vs 0.51). Patients with GBS scores ≤ 3 did not require intervention.


LIMITATIONS
Subjective decision making as to need for endoscopic therapy and blood transfusion.


CONCLUSION
Compared with post-E RS, the GBS was superior in predicting the need for blood transfusion and surgery in hospitalized patients with upper GI hemorrhage and was equivalent in predicting the need for endoscopic therapy, rebleeding, and death. There are potential cutoff GBS scores that allow risk stratification for upper GI hemorrhage, which warrant further evaluation.
Influence of TCM therapy for supplementing Pi and nourishing Shen on dendritic cell function in patients with chronic hepatitis B treated by lamivudine.

OBJECTIVE
To observe the influence of traditional Chinese medicine (TCM) therapy for supplementing Pi () and nourishing Shen (, SPNS) on dendritic cell function in patients with chronic hepatitis B (CHB) treated by lamivudine.


METHODS
Sixty CHB patients with positive HBeAg were equally randomized by digital table into two groups: the observation group and the control group. Patients in the control group were treated with lamivudine only, while patients in the observation group were treated with lamivudine combined with SPNS fomula, for 12 weeks. The phenotype and function of dendritic cell, as well as its secretion factor interleukin 12 (IL-12) in all patients were determined after termination of therapy and the impacts on alanine transaminase (ALT) and HBVDNA were observed.


RESULTS
The phenotypes of dendritic cells such as CD1a, CD80, CD86, human leukocyte antigen (HLA-DR) and intercellular adhesion molecule-1, as well as the levels of stimulation index (SI) and IL-12 were higher in the observation group than those in the control group (P<0.05 or P<0.01). Meanwhile, signififi cant difference between the two groups was also shown in the normalizing rates of ALT and HBV-DNA (P<0.05).


CONCLUSION
TCM therapy for SPNS can signifificantly improve the function of dendritic cells in patients with CHB treated by lamivudine and enhance the early stage response of patients to the treatment.
Rest perfusion abnormalities in hypertrophic cardiomyopathy: correlation with myocardial fibrosis and risk factors for sudden cardiac death

AIM
To measure the prevalence of abnormal rest perfusion in a population of consecutive patients with known hypertrophic cardiomyopathy (HCM) referred for cardiovascular MRI (CMR), and to assess any associations between abnormal rest perfusion and the presence, pattern, and severity of myocardial scar and the presence of risk factors for sudden death.


MATERIALS AND METHODS
Eighty consecutive patients with known HCM referred for CMR underwent functional imaging, rest first-pass perfusion, and late gadolinium enhancement (LGE).


RESULTS
Thirty percent of the patients had abnormal rest perfusion, all of them corresponding to areas of mid-myocardial LGE and to a higher degree of segmental hypertrophy. Rest perfusion abnormalities correlated with more extensive and confluent LGE. The subgroup of patients with myocardial fibrosis and rest perfusion abnormalities (fibrosis+/perfusion+) had more than twice the incidence of episodes of non-sustained ventricular tachycardia on Holter monitoring in comparison to patients with myocardial fibrosis and normal rest perfusion (fibrosis+/perfusion-) and patients with no fibrosis and normal rest perfusion (fibrosis-/perfusion-).


CONCLUSIONS
First-pass perfusion CMR identifies abnormal rest perfusion in a significant proportion of patients with HCM. These abnormalities are associated with the presence and distribution of myocardial scar and the degree of hypertrophy. Rest perfusion abnormalities identify patients with increased incidence of episodes of non-sustained ventricular tachycardia on Holter monitoring, independently from the presence of myocardial fibrosis.
Architecture decisions: demystifying architecture

We believe that a key to demystifying architecture products lies in the architecture decisions concept. We can make the architecture more transparent and clarify its rationale for all stakeholders by explicitly documenting major architecture decisions.
A cascade SVM approach for head-shoulder detection using histograms of oriented gradients

This paper presents a head-shoulder detection approach using cascade SVM and Histograms of Oriented Gradients (HOG). The HOG features which are extracted from variable-size blocks can capture salient features of head-shoulder automatically. A two stage cascade using SVM approach is designed to be the classifier. During detection, the majority of negative windows are rejected at the first stage, leaving a relatively small number of windows to be classified at the second stage, which improves the speed and precision of the detector. Due to the large number of possible target locations in an image, we applied camera self-calibration approach to facilitate the estimation for the size and location of the detection window. The experiments on surveillance videos from Trecvid 2008 [1] proved that our approach can achieve fast and accurate head-shoulder detection.
Segmentation of Instances by Hashing.

We propose a novel approach to address the Simultaneous Detection and Segmentation problem introduced in [8]. Using the hierarchical structures first presented in [1] we use an efficient and accurate procedure that exploits the hierarchy feature information using Locality Sensitive Hashing. We build on recent work that utilizes convolutional neural networks to detect bounding boxes in an image (Faster R-CNN [11]) and then use the top similar hierarchical region that best fits each bounding box after hashing, we call this approach HashBox. We then refine our final segmentation results by automatic hierarchy pruning. HashBox introduces a train-free alternative to Hypercolumns [7]. We conduct extensive experiments on Pascal VOC 2012 segmentation dataset, showing that HashBox gives competitive state-of-the-art object segmentations.
Psychometric properties of the Loewenstein Occupational Therapy Cognitive Assessment-Second Edition in Taiwanese persons with schizophrenia.

OBJECTIVE
This study sought to determine the psychometric properties for the Loewenstein Occupational Therapy Cognitive Assessment-Second Edition (LOTCA-II) in a population of persons with schizophrenia.


METHOD
Sixty-four participants with schizophrenia were administered the LOTCA-II at baseline, and 43 of these were randomly selected to undertake four more standardized measures of cognitive and instrumental activities of daily living (IADL) functions to test convergent validity. One week later, 48 randomly selected participants from the total sample were readministered the LOTCA-II to determine test-retest reliability.


RESULTS
Substantial ceiling effects existed in 96% of LOTCA-II items. Cronbach's alpha for all six sub-tests ranged from .20 to .91; the alpha for the global scale was .90. Intraclass correlation coefficients ranged from .49 to .89 for the subtests and .95 for the full LOTCA-II. Low to moderate correlations were found between LOTCA-II total score and scores on cognitive and IADL measures. No overall significant differences in subtest scores were found across participants differing in employment status.


CONCLUSION
LOTCA-II performance is best interpreted in the context of total score. Further revision of the test items is recommended for a more reliable and valid use of the LOTCA-II in persons with schizophrenia.
Study on mechanical behaviors of pneumatic artificial muscle

0020-7225/$ see front matter 2009 Elsevier Ltd doi:10.1016/j.ijengsci.2009.08.001 * Corresponding author. Tel.: +66 2 9869009x220 E-mail address: thanan@siit.tu.ac.th (T. Leephakp Nowadays, Pneumatic Artificial Muscle (PAM) has become one of the most widely-used fluid-power actuators which yields remarkable muscle-like properties such as high force to weight ratio, soft and flexible structure, minimal compressed-air consumption and low cost. To obtain optimum design and usage, it is necessary to understand mechanical behaviors of the PAM. In this study, the proposed models are experimentally derived to describe mechanical behaviors of the PAMs. The experimental results show a non-linear relationship between contraction as well as air pressure within the PAMs and a pulling force of the PAMs. Three different sizes of PAMs available in industry are studied for empirical modeling and simulation. The case studies are presented to verify close agreement on the simulated results to the experimental results when the PAMs perform under various loads. 2009 Elsevier Ltd. All rights reserved.
Randomized adjuvant chemotherapy trial in high-risk, lymph node-negative breast cancer patients identified by urokinase-type plasminogen activator and plasminogen activator inhibitor type 1.

BACKGROUND
Most patients with lymph node-negative breast cancer are cured by locoregional treatment; however, about 30% relapse. Because traditional histomorphologic and clinical factors fail to identify the high-risk patients who may benefit from adjuvant chemotherapy, other prognostic factors are needed. In a unicenter study, we have found that levels of urokinase-type plasminogen activator (uPA) and plasminogen activator inhibitor type 1 (PAI-1) in the primary tumor are predictive of disease recurrence. Thus, we designed the Chemo N(0) prospective randomized multicenter therapy trial to investigate further whether uPA and PAI-1 are such prognostic factors and whether high-risk patients identified by these factors benefit from adjuvant chemotherapy. After 4.5 years, we present results of the first interim analysis.


METHODS
We studied 556 patients with lymph node-negative breast cancer. The median follow-up was 32 months. All patients with low tumor levels of uPA (< or = 3 ng/mg of protein) and of PAI-1 (< or = 14 ng/mg of protein) were observed. Patients with high tumor levels of uPA (> 3 ng/mg of protein) and/or of PAI-1 (> 14 ng/mg of protein) were randomly assigned to combination chemotherapy or subjected to observation only. All statistical tests were two-sided.


RESULTS
A total of 241 patients had low levels of uPA and PAI-1, and 315 had elevated levels of uPA and/or PAI-1. The estimated 3-year recurrence rate for patients with low tumor levels of uPA and PAI-1 (low-risk group) was 6.7% (95% confidence interval [CI] = 2.5% to 10.8%). This rate for patients with high tumor levels of uPA and/or PAI-1 (high-risk group) was 14.7% (95% CI = 8.5% to 20.9%) (P = 0.006). First interim analysis suggests that high-risk patients in the chemotherapy group benefit, with a 43.8% lower estimated probability of disease recurrence at 3 years than high-risk patients in the observation group (intention-to-treat analysis: relative risk = 0.56; 95% CI = 0.25 to 1.28), but further follow-up is needed for confirmation.


CONCLUSIONS
Using uPA and PAI-1, we have been able to classify about half of the patients with lymph node-negative breast cancer as low risk, for whom adjuvant chemotherapy may be avoided, and half as high risk, who appear to benefit from adjuvant chemotherapy.
Improvement in cancer-related knowledge following use of a psychoeducational video game for adolescents and young adults with cancer.

PURPOSE
Adolescents with chronic illnesses have been shown to have management and treatment issues resulting in poor outcomes. These issues may arise from non-interest in self care and illness knowledge. A video game, "Re-Mission," was developed to actively involve young people with cancer in their own treatment. Re-Mission provides opportunities to learn about cancer and its treatment.


METHOD
The efficacy of Re-Mission was investigated in a multi-site, randomized, controlled study with 375 adolescent and young adult cancer patients. Participants received either a regular commercial game (control) or both the regular game plus Re-Mission (Re-Mission group). Participants were given a mini-PC with the games installed and requested to play for an hour each week for 3 months. A test on cancer-related knowledge was given prior to game play (baseline) and again after 1 and 3 months. At 3 months the Re-Mission group also rated the acceptability and credibility of Re-Mission.


RESULTS
Analyses of the knowledge test scores showed that whereas scores of both groups improved significantly over the follow-up periods, the scores of the Re-Mission group improved significantly more. The size of this effect was related to usage of Re-Mission. Credibility scores were negatively correlated with level of knowledge but not with change in knowledge level at 1 month or 3 months.


CONCLUSIONS
The results indicate a specific effect of Re-Mission play on cancer knowledge that is not attributable to patients' expectations. It is concluded that video games can be an effective vehicle for health education in adolescents and young adults with chronic illnesses.
Whale Optimization Algorithm and Moth-Flame Optimization for multilevel thresholding image segmentation

Determining the optimal thresholding for image segmentation has got more attention in recent years since it has many applications. There are several methods used to find the optimal thresholding values such as Otsu and Kapur based methods. These methods are suitable for bi-level thresholding case and they can be easily extended to the multilevel case, however, the process of determining the optimal thresholds in the case of multilevel thresholding is time-consuming. To avoid this problem, this paper examines the ability of two nature inspired algorithms namely: Whale Optimization Algorithm (WOA) and Moth-Flame Optimization (MFO) to determine the optimal multilevel thresholding for image segmentation. The MFO algorithm is inspired from the natural behavior of moths which have a special navigation style at night since they fly using the moonlight, whereas, the WOA algorithm emulates the natural cooperative behaviors of whales. The candidate solutions in the adapted algorithms were created using the image histogram, and then they were updated based on the characteristics of each algorithm. The solutions are assessed using the Otsu’s fitness function during the optimization operation. The performance of the proposed algorithms has been evaluated using several of benchmark images and has been compared with five different swarm algorithms. The results have been analyzed based on the best fitness values, PSNR, and SSIM measures, as well as time complexity and the ANOVA test. The experimental results showed that the proposed methods outperformed the other swarm algorithms; in addition, the MFO showed better results than WOA, as well as provided a good balance between exploration and exploitation in all images at small and high threshold numbers. © 2017 Elsevier Ltd. All rights reserved. r t e p m a h o r b t K