bluuebunny/crossref_metadata_2025_split huggingface dataset:
RUL prediction for automatic machines: a mixed edge-cloud solution based on model-of-signals and particle filtering techniques
Authors: Barbieri Matteo , Nguyen Khan T. P. , Diversi Roberto , Medjaher Kamal , Tilli Andrea 
Published: November 2020

AbstractThis work aims to provide useful insights into the course of action and the challenges faced by machine manufacturers when dealing with the actual application of Prognostics and Health Management procedures in industrial environments. Taking into account the computing capabilities and connectivity of the hardware available for smart manufacturing, we propose a particular solution that allows meeting one of the essential requirements of intelligent production processes, i.e., autonomous health management. Indeed, efficient and fast algorithms, that does not require a high computational cost and can be appropriately performed on machine controllers, i.e., on edge, are combined with others, which can handle large amounts of data and calculations, executed on remote powerful supervisory platforms, i.e., on the cloud. In detail, new condition monitoring algorithms based on Model-of-Signals techniques are developed and implemented on local controllers to process the raw sensor readings and extract meaningful and compact features, according to System Identification rules and guidelines. These results are then transmitted to remote supervisors, where Particle Filters are exploited to model components degradation and predict their Remaining Useful Life. Practitioners can use this information to optimise production planning and maintenance policies. The proposed architecture allows keeping the communication traffic between edge and cloud in the nowadays affordable “Big data” range, preventing the unmanageable “Huge data” scenario that would follow from the transmission of raw sensor data. Furthermore, the robustness and effectiveness of the proposed method are tested considering a meaningful benchmark, the PRONOSTIA dataset, allowing reproducibility and comparison with other approaches.
Recent climate-driven ecological changes in tropical montane lakes of Rwenzori Mountains National Park, central Africa
Authors: Mackay Anson W. , Lee Rebecca , Russell James M. 
Published: November 2020

AbstractRwenzori Mountains National Park, which straddles the border between the Democratic Republic of Congo and Uganda, has experienced rapid glacier loss since the beginning of the twentieth century, yet there has been little investigation of aquatic biodiversity change in the park. This study presents a paleolimnological analysis from Lake Mahoma (2990 m asl), which is situated in the bamboo-forest transition zone. Diatom and organic geochemistry data from a 39-cm-long sediment core with a basal age of c. 1715 CE were compared with new analyses of previously published data from Lakes Bujuku (3891 m asl) and Lower Kitandara (3989 m asl), in the alpine zone. Comparisons were made to determine if aquatic ecosystem changes exhibited similar inter-lake patterns over the past ~ 150 years of climate warming and glacial recession, or if only local change was apparent. The diatom flora of Lake Mahoma is acidophilous, dominated by Aulacoseira ikapoënsis since at least the mid eighteenth century. In recent decades, the obligate nitrogen-heterotroph Nitzschia palea increased in importance, concurrent with declining δ15Norg values. We suggest that these late twentieth century changes were linked to regional warming and increased thermal stratification of Lake Mahoma. Regional comparisons of the Rwenzori lakes were done using existing organic geochemistry records (total organic carbon, C/N and δ13Corg) and through diatom compositional turnover analyses, and categorisation of species into one of four diatom growth morphology traits, or guilds: tychoplanktonic, high-profile, low-profile and motile. Over the past 150 years, all three lakes showed unidirectional, compositional diatom turnover, indicating that deterministic processes had affected diatom communities. Declining turnover at each site is broadly mirrored by an increase in tychoplanktonic taxa, along with concomitant declines in high-profile diatoms at Lake Mahoma, and low-profile diatoms at Lake Bujuku, and at least for the past 60 years, at Lower Kitandara. The interplay between diatom guilds at all sites is mainly a consequence of competition for available resources. Sediment organic carbon at all sites comes from both autochthonous and allochthonous sources, the relative abundances of which are influenced by the time elapsed since lakes had glaciers in their catchment.
Relation between ocean wave activity and wavefield of the ambient noise recorded in northern Poland
Authors: Lepore Simone , Grad Marek 
Published: November 2020

AbstractThe temporal and spatial variations of the wavefield of ambient noise recorded at ‘13 BB star’ array located in northern Poland were related to the activity of high, long-period ocean waves generated by strong storms in the Northern Indian Ocean, the Atlantic Ocean, and the Northern Pacific Ocean between 2013 and 2016. Once pre-processed, the raw noise records in time- and frequency-domains, and spectral analysis and high-resolution three-component beamforming techniques were applied to the broadband noise data. The power spectral density was analysed to quantify the noise wavefield, observing the primary (0.04–0.1 Hz) microseism peak and the splitting of the secondary microseism into long-period (0.2–0.3 Hz) and short-period (0.3–0.8 Hz) peaks. The beam-power analysis allowed to determine the changes in the azimuth of noise sources and the velocity of surface waves. The significant wave height, obtained by combining observed data and forecast model results for wave height and period, was analysed to characterise ocean wave activity during strong storms. The comparison of wave activity and beam-power led to distinguish the sources of Rayleigh and Love waves associated to long-period microseisms, of short-period microseisms, and of primary microseisms. High, long-period ocean waves hitting the coastline were found to be the main source of noise wavefield. The source of long-period microseisms was correlated to such waves in the open sea able to reach the shore, whereas the source of primary microseisms was tied to waves interacting with the seafloor very close to the coastlines. The source of short-period microseisms was attributed to strong storms constituted of short-period waves not reaching the coast.
On ginseng and Iroquois
Authors: König Torsten 
Published: November 2020

AbstractThis study is dedicated to 2 texts written by French Jesuit father Joseph-François Lafitau (1681–1746), created in the context of his missionary stay in Nouvelle France:Mémoire concernant la précieuse plante du gin-seng de Tartarie(1718) andMœrs des Sauvages amériquains comparées aux mœrs des premiers temps(1724). Both texts permit a multi-level analysis of material dimensions of culture and knowledge in the history of knowledge, the first dealing with a botanical subject, the second an anthropological one. They convey a meta-reflective discourse on material-specific epistemological problems that is realized through narrative textual structures. These texts enable a structural view point of systemic functions of the materiality of knowledge in historical epistemological orders. Finally, they show exemplary and significant transmedia representation techniques and the associated textualization and visualization strategies.
CMEs in the Heliosphere: III. A Statistical Analysis of the Kinematic Properties Derived from Stereoscopic Geometrical Modelling Techniques Applied to CMEs Detected in the Heliosphere from 2008 to 2014 by STEREO/HI-1
Authors: Barnes D. , Davies J. A. , Harrison R. A. , Byrne J. P. , Perry C. H. , Bothmer V. , Eastwood J. P. , Gallagher P. T. , Kilpua E. K. J. , Möstl C. , Rodriguez L. , Rouillard A. P. , Odstrčil D. 
Published: November 2020

AbstractWe present an analysis of coronal mass ejections (CMEs) observed by the Heliospheric Imagers (HIs) onboard NASA’s Solar Terrestrial Relations Observatory (STEREO) spacecraft. Between August 2008 and April 2014 we identify 273 CMEs that are observed simultaneously, by the HIs on both spacecraft. For each CME, we track the observed leading edge, as a function of time, from both vantage points, and apply the Stereoscopic Self-Similar Expansion (SSSE) technique to infer their propagation throughout the inner heliosphere. The technique is unable to accurately locate CMEs when their observed leading edge passes between the spacecraft; however, we are able to successfully apply the technique to 151, most of which occur once the spacecraft-separation angle exceeds $180^{\circ }$

180
∘

, during solar maximum. We find that using a small half-width to fit the CME can result in inferred acceleration to unphysically high velocities and that using a larger half-width can fail to accurately locate the CMEs close to the Sun because the method does not account for CME over-expansion in this region. Observed velocities from SSSE are found to agree well with single-spacecraft (SSEF) analysis techniques applied to the same events. CME propagation directions derived from SSSE and SSEF analysis agree poorly because of known limitations present in the latter.
Hydrogen Dominated Atmospheres on Terrestrial Mass Planets: Evidence, Origin and Evolution
Authors: Owen J. E. , Shaikhislamov I. F. , Lammer H. , Fossati L. , Khodachenko M. L. 
Published: November 2020

AbstractThe discovery of thousands of highly irradiated, low-mass, exoplanets has led to the idea that atmospheric escape is an important process that can drive their evolution. Of particular interest is the inference from recent exoplanet detections that there is a large population of low mass planets possessing significant, hydrogen dominated atmospheres, even at masses as low as $\sim 2~\mbox{M}_{\oplus }$
∼
2

M
⊕

. The size of these hydrogen dominated atmospheres indicates the envelopes must have been accreted from the natal protoplanetary disc. This inference is in contradiction with the Solar System terrestrial planets, that did not reach their final masses before disc dispersal, and only accreted thin hydrogen dominated atmospheres. In this review, we discuss the evidence for hydrogen dominated atmospheres on terrestrial mass ($\lesssim 2~\mbox{M}_{\oplus }$
≲
2

M
⊕

) planets. We then discuss the possible origins and evolution of these atmospheres with a focus on the role played by hydrodynamic atmospheric escape driven by the stellar high-energy emission (X-ray and EUV; XUV).
Induced sputum metabolomic profiles and oxidative stress are associated with chronic obstructive pulmonary disease (COPD) severity: potential use for predictive, preventive, and personalized medicine
Authors: Zhu Tao , Li Shanqun , Wang Jiajia , Liu Chunfang , Gao Lei , Zeng Yuzhen , Mao Ruolin , Cui Bo , Ji Hong , Chen Zhihong 
Published: November 2020

AbstractChronic obstructive pulmonary disease (COPD) is a highly heterogeneous disease, and metabolomics plays a hub role in predictive, preventive, and personalized medicine (PPPM) related to COPD. This study thus aimed to reveal the role of induced sputum metabolomics in predicting COPD severity. In this pilot study, a total of 20 COPD patients were included. The induced sputum metabolites were assayed using a liquid chromatography-mass spectrometry (LC-MS/MS) system. Five oxidative stress products (myeloperoxidase (MPO), superoxide dismutase (SOD), glutathione (GSH), neutrophil elastase (NE), and 8-iso-PGF2α) in induced sputum were measured by ELISA, and the metabolomic profiles were distinguished by principal component analysis (PCA) and orthogonal projections to latent structures discriminant analysis (OPLS-DA). The Kyoto Encyclopedia of Genes and Genomes (KEGG) was used for pathway enrichment analysis, and a significant difference in induced sputum metabolomics was observed between moderate and severe COPD. The KEGG analysis revealed that the glycerophospholipid metabolism pathway was downregulated in severe COPD. Due to the critical role of glycerophospholipid metabolism in oxidative stress, significant negative correlations were discovered between glycerophospholipid metabolites and three oxidative stress products (SOD, MPO, and 8-iso-PGF2α). The diagnostic values of SOD, MPO, and 8-iso-PGF2α in induced sputum were found to exhibit high sensitivities and specificities in the prediction of COPD severity. Collectively, this study provides the first identification of the association between induced sputum metabolomic profiles and COPD severity, indicating the potential value of metabolomics in PPPM for COPD management. The study also reveals the correlation between glycerophospholipid metabolites and oxidative stress products and their value for predicting COPD severity.
Cytochalasins from Xylaria sp. CFL5, an Endophytic Fungus of Cephalotaxus fortunei
Authors: Ma Kai-Liang , Dong Shi-Hui , Li Hang-Ying , Wei Wen-Jun , Tu Yong-Qiang , Gao Kun 
Published: November 2020

Abstract
Three previously undescribed cytochalasins, named xylariasins A‒C (1‒3), together with six known ones (4‒9) were isolated from Xylaria sp. CFL5, an endophytic fungus of Cephalotaxus fortunei. The chemical structures of all new compounds were elucidated on the basis of extensive spectroscopic data analyses and electronic circular dichroism calculation, as well as optical rotation calculation. Biological activities of compounds 1, 4‒9 were evaluated, including cytotoxic, LAG3/MHC II binding inhibition and LAG3/FGL1 binding inhibition activities. Compounds 6 and 9 possessed cytotoxicity against AGS cells at 5 μM, with inhibition rates of 94% and 64%, respectively. In addition, all tested isolates, except compound 6, exhibited obvious inhibitory activity against the interaction of both LAG3/MHC II and LAG3/FGL1. Compounds 1, 5, 7, and 8 inhibited LAG3/MHC II with IC50 values ranging from 2.37 to 4.74 μM. Meanwhile, the IC50 values of compounds 1, 7, and 8 against LAG3/FGL1 were 11.78, 4.39, and 7.45 μM, respectively.

Graphic Abstract
The spring bounces back: introducing the strain elevation tension spring embedding algorithm for network representation
Authors: Bourne Jonathan 
Published: November 2020

AbstractThis paper introduces the strain elevation tension spring embedding (SETSe) algorithm. SETSe is a novel graph embedding method that uses a physical model to project feature-rich networks onto a manifold with semi-Euclidean properties. Due to its method, SETSe avoids the tractability issues faced by traditional force-directed graphs, having an iteration time and memory complexity that is linear to the number of edges in the network. SETSe is unusual as an embedding method as it does not reduce dimensionality or explicitly attempt to place similar nodes close together in the embedded space. Despite this, the algorithm outperforms five common graph embedding algorithms, on graph classification and node classification tasks, in low-dimensional space. The algorithm is also used to embed 100 social networks ranging in size from 700 to over 40,000 nodes and up to 1.5 million edges. The social network embeddings show that SETSe provides a more expressive alternative to the popular assortativity metric and that even on large complex networks, SETSe’s classification ability outperforms the naive baseline and the other embedding methods in low-dimensional representation. SETSe is a fast and flexible unsupervised embedding algorithm that integrates node attributes and graph topology to produce interpretable results.
Endovascular aneurysm repair in short and angulated aortic aneurysmal neck: A retrospective case series of single centre experience
Authors: Tien Tran Quyet , Bang Ho Tat , Van Quang Nguyen 
Published: November 2020

ABSTRACT

Introduction:
The purpose of this study was to analyse the outcomes of endovascular aneurysm repair (EVAR) in patients with aortic aneurysms with short and angulated aortic neck.

Methods:
This was a retrospective case series of single centre experience. Patients diagnosed with infrarenal abdominal aneurysm with or without iliac aneurysm who underwent endovascular treatment between May 2012 and August 2020 were included in the study.

Results:
Standardised information of 95 patients who met the inclusion criteria was documented (71 males, 24 females; average age: 73.8 ± 17.6 years). There were 45 patients in group H (short and/or angulated aortic neck anatomy) and 54 patients in group F (control group). The clinical presentations, intervention-related characteristics, and early as well as mid-term results were not statistically different between the two groups. In group H, cases of short aortic neck had higher risk of early type IA endoleak (4 patients, 57.1%).

Conclusion:
Endovascular aneurysm repair in the treatment of infrarenal abdominal aortic aneurysm is considered safe and effective in cases of both groups. Treatment outcomes and complications were not statistically different between the groups. Nevertheless, cases of aortic short neck had a greater risk of early type IA endoleak and reintervention.

Highlights:
Short and long-term outcomes of the peripheral arterial indirect bypass in diabetic patients with chronic limb-threatening ischemia: Single-center case series
Authors: Baram Aram , Baban Zana T. 
Published: November 2020

ABSTRACT

Objective:
Peripheral arterial disease (PAD) is the main cause behind non-healing painful foot ulcers, disabilities and amputation diabetic patients. Diabetes Milletus (DM) negatively affects long-term patency and limb salvage operations. Peripheral indirect femoropopliteal bypass is one of the most common method of revascularization for diabetic patients with critical limb ischemia. Our study shows short and long-term outcomes of infra-inguinal indirect bypasses in diabetic patients. We evaluated the QoL of our series of patients after bypass surgery.

Methods:
Prospective observational single center study with retrospective analysis of the data conducted over 13 years from February 2007 to February 2020. A total of 150 diabetic patients with features of CLTI of the lower limbs were admitted for revascularization. All patients underwent infra-inguinal indirect (non-Angiosome) bypass using autologous great saphenous vein graft only.

Results:
A total of 150 type 2 diabetic patients included; 107 male (71.3%) and 43 female (28.7%). Age ranged from 42 to 77 years with a mean of 61.77(±6.83) years. The commonest presentation was major tissue loss (category 6) in 45.3% of the cases, rest pain (category 4) was present in 28.6% of the cases followed by minor tissue loss in another 28% of the cases, while only 26% of the cases had minor tissue loss (category 5).
The three most common types of bypasses were femoro-popliteal infra-genicular (FMPOP-IG) (56%), femoro-popliteal retro-genicular (RG) (25.3%) and femoro-posterior tibial (F-PT) (10%).
Preoperative quality of life (QoL) measured by VASCUQoL-6, Most of the patients (61.9%) had VASCUQoL-6 of 4 and 5. At 3 months the maximum VASCUQOL-6 remained at 11 while at 36 months, the minimum VASCUQoL-6 was 17.8 and maximum reached 20.

Conclusion:
It is necessary to have the possibility of performing open indirect bypass revascularization for diabetic patients with CLTI, even in the absence of possibility for endovascular therapies.

Highlights:
Forest discovery: place relationships on an environmental science, arts and humanities (eSAH) field trip
Authors: Goralnik Lissy , Kelly Sarah Minette , O’Connell Kari , Nelson Michael Paul , Schulze Mark 
Published: November 2020

AbstractSense of place describes both affective and cognitive — emotional and intellectual — connections to place. Affective outcomes, tied to arts and humanities education, can facilitate these connections. But little research explores environmental science, arts and humanities (eSAH) curricula on place relationships. Additionally, most research on the sense of place focuses on repeated visits to a place over time, rather than short-term experiences like a field trip. Finally, digital technology is a growing trend across science education, but little research investigates its use in field-based contexts. Our research begins to address these gaps. This article describes an eSAH field trip for middle and high school learners. Using a conventional content analysis, we present pilot data from two high school field trips. Our findings illuminate a framework for understanding active and passive place relationships in the context of short-term interdisciplinary field learning experiences.
High genetic diversity in the clonal aquatic weedAlternanthera philoxeroidesin the United States
Authors: Williams Dean A. , Harms Nathan E. , Knight Ian A. , Grewell Brenda J. , Futrell Caryn Joy , Pratt Paul D. 
Published: November 2020

AbstractThe distribution of genetic diversity in invasive plant populations can have important management implications. Alligatorweed [Alternanthera philoxeroides(Mart.) Griseb.] was introduced into the United States around 1900 and has since spread throughout much of the southern United States and California. A successful biological control program was initiated in the late 1960s that reducedA. philoxeroidesin the southern United States, although control has varied geographically. The degree to which variation among genotypes may be responsible for variation in control efficacy has not been well studied due to a lack of genetic data. We sampled 373 plants from 90 sites across the United States and genotyped all samples at three chloroplast regions to help inform future management efforts. Consistent with clonal spread, there was high differentiation between sites, yet we found six haplotypes and high haplotype diversity (meanh= 0.48) across states, suggesting this plant has been introduced multiple times. Two of the haplotypes correspond to previously described biotypes that differ in their susceptibility to herbicides and herbivory. The geographic distribution of the three common haplotypes varied by latitude and longitude, while the other haplotypes were widespread or localized to one or a few sites. All the haplotypes we screened are hexaploid (6n= 102), which may enhance biological control. Future studies can use these genetic data to determine whether genotypes differ in their invasiveness or respond differently to control measures. Some states, for instance, have mainly a single haplotype that may respond more uniformly to a single control strategy, whereas other states may require a variety of control strategies. These data will also provide the basis for identifying the source regions in South America, which may lead to the discovery of new biological control agents more closely matched to particular genotypes.