bluuebunny/crossref_metadata_2025_split huggingface dataset:
Derivation of the physical parameters of the jet in S5 0836+710 from stability analysis
Authors: Vega-García L. , Perucho M. , Lobanov A. P. 
Published: May 2019

Context. A number of extragalactic jets show periodic structures at different scales that can be associated with growing instabilities. The wavelengths of the developing instability modes and their ratios depend on the flow parameters, so the study of those structures can shed light on jet physics at the scales involved.
Aims. In this work, we use the fits to the jet ridgeline obtained from different observations of S5 B0836+710 and apply stability analysis of relativistic, sheared flows to derive an estimate of the physical parameters of the jet.
Methods. Based on the assumption that the observed structures are generated by growing Kelvin–Helmholtz (KH) instability modes, we ran numerical calculations of stability of a relativistic, sheared jet over a range of different jet parameters. We spanned several orders of magnitude in jet-to-ambient medium density ratio, and jet internal energy, and checked different values of the Lorentz factor and shear layer width. This represents an independent method to obtain estimates of the physical parameters of a jet.
Results. By comparing the fastest growing wavelengths of each relevant mode given by the calculations with the observed wavelengths reported in the literature, we have derived independent estimates of the jet Lorentz factor, specific internal energy, jet-to-ambient medium density ratio, and Mach number. We obtain a jet Lorentz factor γ ≃ 12, specific internal energy of ε ≃ 10−2 c2, jet-to-ambient medium density ratio of η ∼ 10−3, and an internal (classical) jet Mach number of Mj ∼ 12. We also find that the wavelength ratios are better recovered by a transversal structure with a width of ≃10% of the jet radius.
Conclusions. This method represents a powerful tool to derive the jet parameters in all jets showing helical patterns with different wavelengths.
Features of BIM-modeling of engineering systems of the construction object
Authors: Volkov Andrey , Chelyshkov Pavel , Brazhnikov Pavel 
Published: May 2019

In this article, the possibilities of designing engineering systems of buildings with the use of information modeling tools are considered. In particular, the aspects of the process of designing power supply systems are discussed in detail. The analysis of software products on their adaptability to design problems and the regulatory framework of the Russian Federation is analyzed using the example of calculating the required illumination level for various types of premises (lighting engineering calculation).
The article considers two BIM-oriented programs performing the same process. In the course of the analysis, different approaches to accomplishing the task. In particular, similar program features were revealed, as well as their differences, which allow design engineers to develop project documentation with varying degrees of detail. Including a comparative analysis of the results of automated calculation with manual methods.
The Outcomes of Isolated Lateral Release in Patellofemoral Instability: A Systematic Review and Meta-Analysis
Authors: Tan Si Heng Sharon , Chua Chen Xi Kasia , Doshi Chintan , Wong Keng Lin , Lim Andrew Kean Seng , Hui James Hoipo 
Published: May 2019

AbstractThere have been conflicting reports regarding the outcomes of lateral release when used in the management of patellofemoral instability. This systematic review and meta-analysis therefore aims to evaluate the outcomes of isolated lateral release in the management of patellofemoral instability. The review was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. All studies that reported the outcomes of isolated lateral release for recurrent patellofemoral dislocations were included. A total of 10 publications were included, with 204 knees. All studies consistently reported a decrease in the rates of patellofemoral dislocation (odds ratio [OR] < 0.01; 95% confidence interval [CI]: <0.01–0.01) and an increase in the odds of having a good outcome (OR 0.01; 95% CI: <0.01–0.02) after lateral release. All studies also consistently reported a similar number of patients participating in sports postoperatively as compared with preinjury (OR 2.78; 95% CI: 0.53–14.68). A total of 28 (14.1%) out of 198 patients had postoperative dislocation. Of these patients, 15 required a secondary procedure for patellofemoral realignment; however, all patients who had their eventual outcomes reported still had a good outcome postoperatively. Isolated lateral release can lead to good short- to middle-term outcomes when used in the management of recurrent patellofemoral dislocations. The procedure can lead to a significantly decreased rate of recurrence of patellofemoral dislocations, a significantly increased rate of good outcomes, and a similar number of patients being able to participate in sports as compared with the number of patients participating in sports prior to having patellofemoral dislocations. An isolated lateral release could therefore potentially serve as a simple and relatively low-risk procedure that could be performed as a first-line surgical management in selected patients with patellofemoral instability, allowing them to possibly avoid a more complex and major operation. This is a Level IV study.
Serial Evaluation of Haemostasis Following Acute Trauma Using Rotational Thromboelastometry in Cats
Authors: Muri Benjamin M. , Jud Schefer Rahel , Sigrist Nadja E. 
Published: May 2019

Objective The aim of this study was to describe coagulation abnormalities and incidence of acute traumatic coagulopathy (ATC) in traumatized cats over the first 24 hours after admission.
Study Design This was a prospective observational study at the university teaching hospital including 26 cats with acute (<5 hours) trauma. Blood was sampled for rotational thromboelastometry (ROTEM) parameters at presentation and 6 hours/24 hours thereafter. Rotational thromboelastometry tracings were defined as hypo- or hypercoagulable if ≥ 2 of the following parameters were above or below institutional reference intervals: clotting time, clot formation time (CFT), maximum clot firmness, maximum lysis or maximum clot elasticity. Hypocoagulability at presentation was defined as ATC. Injury severity scores, treatment and survival to hospital discharge were retrieved from patient records.
Results The incidence of ATC was 15% and the most common ROTEM abnormalities in cats with ATC were clotting time and CFT prolongation in both extrinsic and intrinsic ROTEM profiles. After 24 hours, compared with presentation, significantly more cats were hypercoagulable (p = 0.047) and none of the cats showed hypocoagulopathy. Cats with ATC received significantly more blood transfusions (p = 0.008).
Conclusion The incidence of ATC in cats is higher than previously reported. Clotting time and CFT prolongations seem to be more common than hyperfibrinolysis and 53% of the cats became hypercoagulable within 24 hours. While the clinical relevance of ATC in cats needs to be investigated, cats diagnosed with ATC required significantly more blood transfusions.
Effect of the Dog positioning on X-Ray Table on Hip Dysplasia Parameter Evaluation
Authors: Martins João , Colaço Bruno , Alves-Pimenta Sofia , Gonzalo Orden José M. , Ferreira António J. , Ginja Mário M. 
Published: May 2019

Abstract
Objective The aim of this study was to evaluate the effect of pelvic tilting along the long axis and femoral rotation on Norberg angle (NA), subluxation index (SI) and subluxation category (SC) in the standard ventrodorsal hip extended (VDHE) radiographical view on live animals.
Study Type This was a retrospective clinical study.
Materials and Methods Pairs of VDHE views, one adequately positioned and the other with pelvic tilting or femoral internal or external rotation, were compared for the NA, SI and SC.
Results On the malpositioned pelvis set, on the underside the mean ± SD NA was 98.7 ± 6.1°, the SI was 0.27 ± 0.12 and the SC was 2.8 ± 0.8 versus, on the acceptable set, the NA was 99.2 ± 6.4° (p > 0.05), the SI was 0.25 ± 0.12 (p < 0.05) and the SC was 2.3 ± 0.9 (p < 0.05); on the malpositioned upperside, the NA was 102.1 ± 6.4°, the SI was 0.21 ± 0.14 and the SC was 1.7 ± 1.1 versus, on the acceptable positioned set, the NA was 100.8 ± 6.7° (p < 0.05), the SI was 0.24 ± 0.15 (p < 0.05) and the SC was 2.3 ± 1.2 (p < 0.05). Femoral internal or external rotation sets did not show significant differences between malpositioned and acceptable positioned sets (p > 0.05).
Conclusions In clinical practice, pelvic tilting along the long axis in VDHE view results in non-favourable hip changes in the NA, SI and SC on the underside and favourable on the upperside, and the internal or external femoral rotation did not affect these variables.
Effect of Neonatal Phototherapy on Eosinophil Levels in Nonsevere Hyperbilirubinemia
Authors: Can Ceren , Hamilcıkan Şahin 
Published: May 2019

Objective The purpose of the research was to determine the impact of phototherapy (PT) on eosinophil levels in neonates with nonsevere bilirubin levels (<20 mg/dL) treated with PT.
Study Design This observational pilot study included term neonates with early neonatal hyperbilirubinemia.
Results Ninety-six term neonates were included in the study. The male-to-female ratio was 1.23. Hyperbilirubinemia was most frequently related to ABO group incompatibility (49%). Fifty-two neonates (54.1%) were born by normal spontaneous delivery. After PT, while total serum bilirubin, hemoglobin, hematocrit, leukocyte, and neutrophil levels were found to be significantly decreased, eosinophil levels were significantly increased (p = 0.01). No significant difference was found regarding lymphocyte and basophil levels after PT. A statistically significant correlation was found between bilirubin and eosinophil levels before PT (r
2 = 0.28, p = 0.03). No correlation between eosinophil levels and treatment age, gender, diagnosis of hyperbilirubinemia, and delivery route before PT was found. After PT, eosinophil levels increased, while other blood cell series were found to be decreased. The correlation between the bilirubin levels and eosinophil was found to be negative (r
2 = − 0.32, p = 0.02) after PT.
Conclusion PT may increase serum eosinophil levels in term neonates with nonsevere hyperbilirubinemia.
Rarely Seen Poland–Moebius Syndrome: A Comprehensive View with Perspective of Pediatric Neurology
Authors: Havalı Cengiz , Saymazlar Dilek Damla , Öztürk Zeynep 
Published: May 2019

Background Moebius syndrome is a rare congenital disorder characterized by a unilateral or bilateral congenital facial weakness with impairment of ocular movements. Poland syndrome is an occasional disease defined as the unilateral absence of pectoralis major muscle and ipsilateral syndactyly. As to, Poland–Moebius syndrome is a rare condition which consists of assembly components of Poland and Moebius syndromes.
Patients and Methods Patient 1 is a 12-year-old male patient referred for evaluation of difficulties in eye movements to the hospital. On admission, facial, abducens, trochlear, and oculomotor cranial nerves involvement was determined in the neurological examination. His right pectoralis major muscle was hypoplastic in the examination. Patient 2 is a 4-month-old female patient who was admitted with restricted eye movements, weakness of crying, and difficulty in swallowing. Neurological examination indicated facial, abducens, trochlear, oculomotor, glossopharyngeal, and vagus cranial nerves involvement. Her physical examination demonstrated hypoplastic left pectoralis major muscle and hypoplastic left hand.
Results The biochemical laboratory studies, creatinine kinase levels, and tests for inborn error of metabolism of both patients were normal. Chest X-ray studies revealed the lack of muscle tissue development in the left pectoral region. Cranial magnetic resonance imaging, echocardiography, and abdominal ultrasound were also normal.
Conclusion This report highlights two cases of Poland–Moebius syndrome in two patients of varying age and clinical presentations, with a comprehensive review from the perspective of pediatric neurology.
Phosphoproteomic and proteomic profiling of serine/threonine protein kinase PkaE of Streptomyces coelicolor A3(2) and its role in secondary metabolism and morphogenesis
Authors: Hirakata Toshiyuki , Urabe Hiroaki , Sugita Takashi 
Published: May 2019

ABSTRACT
This study aimed to investigate the role of serine/threonine kinase PkaE in Streptomyces coelicolor A3(2). Liquid chromatography tandem mass spectrometry was performed for comparative phosphoproteome and proteome analyses of S. coelicolor A3(2), followed by an in vitro phosphorylation assay. Actinorhodin production in the pkaE deletion mutant was lower than that in wild-type S. coelicolor A3(2), and the spores of the pkaE deletion mutant were damaged. Furthermore, phosphoproteome analysis revealed that 6 proteins were significantly differentially hypophosphorylated in pkaE deletion mutant (p &lt; 0.05, fold-change ≤ 0.66), including BldG and FtsZ. In addition, the in vitro phosphorylation assay revealed that PkaE phosphorylated FtsZ. Comparative proteome analysis revealed 362 differentially expressed proteins (p &lt; 0.05) and six downregulated proteins in the pkaE deletion mutant involved in actinorhodin biosynthesis. Gene ontology enrichment analysis revealed that PkaE participates in various biological and cellular processes. Hence, S. coelicolor PkaE participates in actinorhodin biosynthesis and morphogenesis.
Protective effect of Mori Cortex radicis extract against high glucose-induced oxidative stress in PC12 cells
Authors: You Sohyeon , Kim Gun-Hee 
Published: May 2019

ABSTRACT
This study was undertaken to investigate the neuroprotective effect of an ethanolic extract of Mori Cortex radicis (MCR) against high glucose (HG)-induced oxidative damage in PC12 cells. Cell cytotoxicity was examined using MTT and lactate dehydrogenase assays. To examine the antioxidative effects, intracellular reactive oxygen species (ROS) and malondialdehyde (MDA) levels and the activities of antioxidant enzymes were measured. The expressions of apoptosis-associated proteins were assessed. MCR was found to increase the viabilities of HG-induced PC12 cells and to inhibit ROS and MDA production and to promote antioxidative enzyme activities. Furthermore, MCR reduced apoptosis by upregulating p-Akt and Bcl-2/Bax ratio and reducing cytochrome c level. The main flavonoids in MCR were identified by HPLC to be kuwanon G and morusin. These results suggest the antioxidative effects of MCR protect against HG-induced oxidative stress and that MCR has potential therapeutic use for the prevention and treatment of diabetic neuro-degeneration.
Research on Accurate Positioning of Indoor Objects Based on ROS and 3D Point Cloud
Authors: Yu Yang , Piao Yan , Ni Yan , Si Tongling 
Published: May 2019

Abstract
Due to the small environmental limitations of GPS satellite positioning and the complexity of the indoor environment, indoor object location technology has the opportunity to display its talents. Considering that the map constructed by ROS SLAM can only describe the two-dimensional information of the environment, the three-dimensional point cloud image can only describe the independent three-dimensional information of the object. This paper combines the indoor 2D map and the 3D point cloud image information of the object constructed by Gmapping algorithm and proposes a composite coordinate positioning system. The whole positioning experimental data has shown that the average measurement error of the position in the object room is only 4.2cm, and its positioning accuracy is 6.7% higher than that of the common ultrasonic and infrared positioning system[1], and the positioning accuracy of the positioning system based on Bluetooth angle measurement[2] is improved by 20% compared with ultra-wideband[3]. Positioning system increased by 72%. The object positioning error is small and the positioning is accurate.
A Robust Feature-processing Method for Age-invariant Face Recognition
Authors: Hou Xiaonan , Qiu Xuetao , Wan Sishuang , Tang Tao 
Published: May 2019

Abstract
In this paper, we present a novel feature-processing method for age-invariant face recognition so that it is robust to aging process. The main purpose of feature-processing is to remove aging effects while keep personalized properties stable simultaneously. In order to achieve this, we try to learn a space map and then encode the mapped feature to an age - invariant representation. In the encoding step, we introduce two kinds of constraints: the temporal constraint (local constraint) and boundary constraint (global constraint). We applied our feature-processing method to Cross-Age Celebrity Dataset (CACD). In order to verify the versatility of our method, we apply it to both high-dimensional LBP feature and deep feature. Results show that our feature-processing method works well on CACD and the face verification subset of CACD (CACD-VS).
Virtual Ship Environment Creation Method
Authors: Rukai Zhang 
Published: May 2019

Abstract
Based on the real ship structure and equipment, the game engine is used to construct a three-dimensional visual model scene. Multigen Creator will be used to model, and after format conversion, the model will be driven by Unity 3D to complete the virtual ship platform construction. By introducing control logic such as roaming logic and navigation logic, the user is allowed to perform operations such as roaming and navigation in the virtual scene. The system has the characteristics of strong sense of reality, friendly interface, and interaction, which meets the needs of information teaching. With the cross-platform features of Unity3d, PC and mobile programming are respectively carried out to realize the network development of VR training platform.
TDMA Device Identification Using Continuity of Carrier Phase
Authors: Pan Y , Peng H , Li T , Wang W 
Published: May 2019

Abstract
Specific emitter identification provides the capability to distinguish radio emitters with the external features carried by the received waveforms. As existing features are not specific to time-division multiple access (TDMA) devices, it is yet intractable to discern the emitter in the case of low signal-to-noise rates or short durations. In this paper, we propose a novel characteristic based on the continuity of carrier phase and explore its application on TDMA device identification. The characteristic reflects a fact whether adjacent time slots are assigned to the same user terminal, which reveals a potential link between slots even if the protocol is unknown. To apply it to TDMA device identification, we augment the typical SEI scheme with two subsystems, Decision and Correction, in which the recognition results can be corrected to improve the accuracy. Simulation results demonstrate that the characteristic is resilient against the ambient noise, and it evidently improves the recognition accuracy.
Application of Sparse Dictionary Adaptive Compression Algorithm in Transient Signals
Authors: Ailun Zhang , Han Tailin 
Published: May 2019

Abstract
An adaptive compression algorithm based on sparse dictionary is proposed to solve the pressure on the transmission system caused by long-time high sampling rate sampling of transient signals. Due to the obvious difference between transient and non-transient information features of transient signals. According to the sparse dictionary construction characteristic that the more matching atoms and signal features are, the better sparse performance is, the transient signal feature information is extracted and compressed separately. After data compression, the principle of compressed sensing is applied to restore the transient signal, so as to reduce the amount of data transmitted in the transmission system. In summary, the adaptive sparse dictionary compression algorithm effectively compresses the transient signal data, and the compressed data can accurately recover the transient signal.
Feature Points Matching Algorithm based on Homography Constraint and Gray Scale Truncation Number
Authors: Wu Ruo , Wang Kun , Ma Jiquan 
Published: May 2019

Abstract
A measure function is used to judge whether match in boost matching. In this paper, we offer a kind of new measure function called GST. We simply use the relationship between gray differences and threshold of the points of domain tests the matching degree. We use homography and GST to improve the number and precision of correspondences of SIFT matching. Firstly, homography is estimated using the result of SIFT matching by VRANSAC. Then, wrong correspondences are eliminated by homography. Finally, we use GST and homography to boost matching the wrong correspondences. Experiments with the Oxford datasets show that our method can get better performance than the existed methods.
A Recommendation Algorithm Based on Item Genres Preference and GBRT
Authors: Wang Yuan , Tang Yan 
Published: May 2019

Abstract
The most mature and widely used collaborative filtering algorithm is facing the problem of data sparsity, which is not conducive to the acquisition of user preferences, thus affecting the recommendation effect. Introducing item genres into recommendation algorithm can reduce the impact of data sparsity on recommendation effect. The personalized preferences of users can be extracted more effectively from the preference information of item genres, and the recommendation accuracy can be further improved. On this basis, this paper proposes a recommendation algorithm based on item genres preference and GBRT, which divides similar users by K-means clustering algorithm, extracts user preferences of item genres and auxiliary features, and establishes a rating prediction model combined with GBRT algorithm. The experiments on the common datasets of Movie Lens 100K and Movie Lens 1M show that the proposed algorithm achieves 0.8%-7% optimization on the evaluation index MAE, which indicates that the impact of data sparsity is reduced to a certain extent and the recommendation efficiency is better than the existing recommendation algorithm.
An Effective Text Classification Model Based on Ensemble Strategy
Authors: Hong Zhu , Wenzhen Jin , Guocai Yang 
Published: May 2019

Abstract
Automatic text classification is a classic topic for natural language processing. Text classification research mainly focuses on feature representation of text documents or designing an efficient machine learning model. Although various approaches have been proposed to address these problems, they are still far from being solved. In this paper, we proposed a novel method called LAC_DNN to achieve the text classification based on diverse feature representation approaches and classifiers. More specifically, LAC_DNN firstly introduces a novel feature representation approach called LATW to extract feature information of the documents, which integrates the feature information extracted by LSI model, TF-IDF weighted vector space model (TF-IDF_VSM), TF-IDF weighted word2vec (TF-IDF_word2vec) and average word2vec (Avg_word2vec), respectively. Secondly, it trains different classifiers including support vector machine, k nearest neighbor, logistic regression and convolutional neural networks based on the feature encoded by LATW. Finally, LAC_DNN integrates these classifiers into an ensemble predictor to leverage complimentary information of feature representation methods and classifiers, and predict the topic of text documents. LAC_DNN achieves superior performance with accuracy of 97.44% and 97.43% on the text datasets of Fudan and Netease news, respectively. Extensive experiments show that LAC_DNN is prominent and useful for text classification.