bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Design of College Student Achievement Management System based on GA-BP Network
Authors: Liu Xia , Guo Jing , Jiang Jingjing 
Published: January 2023

Abstract
With the development of computer technology, higher education and teaching work gradually depend on the score management system. The performance management system has a substantial amount of student curriculum performance data, and how to effectively analyze these data to improve the teaching quality of the school is a problem worthy of in-depth study. This study integrates a genetic algorithm and a neural network on the basis of the BP neural network to create a GA-BP network hybrid algorithm that addresses the BP neural network's issues, such as its proclivity to fall into local minima and slow convergence speed. The GA-BP network hybrid algorithm improves the connection weights and thresholds of the BP network using the genetic algorithms global search capability so that the network can search from a better initial value and complete the global optimization more quickly. According to the needs of student achievement management, this research designed and developed a student achievement management system and realized the application of the GA-BP network in the student achievement management system. Through the experiments of MATLAB software simulation, this study has verified the feasibility of the model applied to the graduation score prediction. The results show that the model can make a more accurate prediction of the unknown graduation scores by using the existing student course scores, so as to use the prediction results to carry out academic warning prompts for students, help students strengthen their professional knowledge learning, and help colleges and universities adjust their education and teaching work.
A new Lean tool for efficiency evaluation in SMED projects
Authors: BRAGLIA Marcello , Paco Francesco Di , MARRAZZINI Leonardo 
Published: January 2023

Abstract
The ability of companies to rapidly conduct a changeover from one product to another as part of a production process is a fundamental step towards a more flexible production system that can deal with an increasingly dynamic and competitive market. Single-Minute Exchange of Die (SMED) is the best-known lean tool that aims to reduce time consumption in the changeover process. This paper presents a new Lean tool called Set-up Saving Deployment (SSD), which improves set-up efficiency by classifying, analyzing, and removing set-up losses within a changeover process, and which supports decision-making for SMED implementation. SSD uses three matrices, constructed sequentially from the first (L-Matrix) to the last (ECE-Matrix), in order to assess the possible time savings that can be achieved by eliminating losses and, in addition, to forecast possible improvements resulting from implementing a SMED project. SSD also provides a new basket of tailored set-up efficiency indicators that allow the analysis team to correctly assess set-up efficiency, and compare the 'as is' condition with the subsequent 'to be' condition from an operational perspective. The effectiveness of SSD in addressing set-up losses and predicting time savings is illustrated using an industrial case study of a resin doming machine. Thanks to its structured step-by-step procedure, SSD significantly improves the efficiency of the changeover process.
Structural and Reactivity Effects of Secondary Metal Doping into Iron-Nitrogen-Carbon Catalysts for Oxygen Electroreduction
Authors: Jaouen Frédéric , Luo Fang , Roy Aaron , Sougrati Moulay Tahar , Khan Anastassiya , Cullen David , Wang Xingli , Primbs Mathias , Zitolo Andrea , Strasser Peter 
Published: January 2023

Abstract
While improved activity was recently reported for bimetallic iron-metal-nitrogen-carbon (FeMNC) catalysts for the oxygen reduction reaction (ORR) in acid medium, the nature of active sites and interactions between the two metals are poorly understood. Here, FeSnNC and FeCoNC catalysts were structurally and catalytically compared to their parent FeNC and SnNC catalysts. While CO cryo-chemisorption revealed a twice lower site density of M-Nx sites for FeSnNC and FeCoNC relative to FeNC and SnNC, the mass activity of both bimetallic catalysts is 50–100% higher than that of FeNC, due to a larger turnover frequency in the bimetallic catalysts. Electron microscopy and X-ray absorption spectroscopy identified the coexistence of Fe-Nx and Sn-Nx or Co-Nx sites, while no evidence was found for binuclear Fe-M-Nx sites. 57Fe Mössbauer spectroscopy revealed that the bimetallic catalysts feature a higher D1/D2 ratio of the spectral signatures assigned to two distinct Fe-Nx sites, relative to the FeNC parent catalyst. Thus, the addition of the secondary metal favored the formation of D1 sites, associated with the higher turnover frequency.
Diastolic function evaluation in children with ventricular arrhythmia.
Authors: Pietrzak Radosław , Książczyk Tomasz M , Franke Magda , Werner Bożena 
Published: January 2023

Abstract
Premature ventricular contractions(PVCs) are frequently seen in children. The diastolic function has not been investigated in PVC children. We evaluated the left ventricular diastolic function in PVC children with normal left ventricular systolic function to detect whether potential diastolic function disturbances influence physical performance. In the study group (36 PVCs children) and the controls (33 healthy volunteers). Echocardiographical diastolic function parameters such as left atrial volume index(LAVI), left atrial strains (AC-R, AC-CT, AC-CD), E wave, E’ medial atrial tissue doppler velocity, E/E’ and isovolumic relaxation time (IVRT) were measured. In the CPET, oxygen uptake (VO2max) was registered. Evaluation of diastolic function parameters revealed statically significant differences between the study and control group regarding Edt 176.58 ± 54.8ms vs 136.94 ± 27.8ms,p < 0.01; E/E’12.6 ± 3.0 vs. 6.7 ± 1.0,p < 0.01; IVRT 96.6 ± 19.09ms. vs. 72.86 ± 13.67 ms,p < 0.01, respectively. Left atrial function was impaired in the study group compared to controls: LAVI 25.3 ± 8.2ml/m2 vs. 19.2 ± 7.5ml/m2,p < 0.01, AC-CT 34.8 ± 8.6% vs. 44.8 ± 11.8%,p < 0.01; AC-R-6.0 ± 4.9% vs. -11.5 ± 3.5%, p < 0.01, respectively. Statistically significant moderate, negative correlation between VO2max and E/E’(r =-0.33, p = 0.02) was found. Left ventricular diastolic function is impaired and deteriorates with the arrhythmia burden increase in PVC children. Ventricular arrhythmia in young individuals may be related to the filling pressure elevation and drive to exercise capacity deterioration.
Approximate Isosceles ω-Orthogonality and Approximate ω-Parallelism
Authors: AMYARI Maryam , TORABIAN Maryam , KHIBARY Marzieh MORADIAN 
Published: January 2023

Abstract
We introduce two notions of approximate isosceles ω-orthogonality and two notions of approximate ω-parallelism for bounded linear operators on a Hilbert space. Moreover , we state some basic properties of these notions and investigate some relations between them.
2010 Mathematics Subject Classification. Primary 47A12; 46B20; 46C05.
The PREDG study: a randomised controlled trial testing whether an educational intervention can prevent gestational weight gain in women with obesity
Authors: Barquiel Beatriz , Calvo Mercedes , Moreno-Domínguez Óscar , Martínez-Sánchez Nuria , Muner Marta , Bedate María Francisca , Delgado María , López Silvia , Hillman Natalia , González Noemí , Calle María De la , Bartha José Luis 
Published: January 2023

Abstract
OBJECTIVE The PREDG trial was designed to study the influence of an educative program on gestational weight gain in women with pregestational obesity.
METHODS Randomized controlled clinical trial (ISRCTN61793947) in 169 women with pregestational obesity (BMI ≥30 kg/m2). Women were randomized to participate in a group education program in nutrition and physical activity or conventional follow-up in a specialized Unit of Obesity and Pregnancy. The nutritional intervention was adjusted to prepregnancy BMI and to the physical activity intensity. Quality was based on the Mediterranean diet. Macronutrients were distributed as follows: 50% carbohydrates, 20% protein and 30% fat. Adequate gestational weight gain was defined between 5-9 kg (IOM 2009). Mean gestational weight gain was compared between groups by using the T Student test and frequencies of adequate gestational weight gain were compared by using ꓫ2.
RESULTS Gestational weight gain was lower in the intervention group: 8 (4-11) vs 9.2 (6-13) kg, p 0.026. Gestational weight gain was below 9 kg in 24 (61.5%) women of the intervention vs 10 (24.4%) of the control group (p 0.001). Regarding obstetric complications, there were 15 (8.3%) cases of gestational diabetes with no differences between the groups. There were 14 (18.2%) cases of gestational hypertension or preeclampsia in the intervention group compared with 26 (32.5%) in the control group (p 0.040). With reference to neonatal weight, there were 7 (31.8%) large for gestational age neonates in the intervention group compared with 15 (68.2%) in the control group (p 0.050). CONCLUSIONS A group-based educative and structured intervention results in an adequate weight gain and lower rates of gestational hypertension, preeclampsia and large for gestational age neonates in pregnant women with obesity.
Shoot and root residues decomposition from different cropping systems under semiarid Mediterranean conditions
Authors: Brull Irene Martin , Cantero-Martínez Carlos , Franco-Luesma Samuel , Lafuente Victoria , Álvaro-Fuentes Jorge 
Published: January 2023

Abstract
Aims: Improving the management of crop residues is essential for water and soil conservation and for increasing soil C and N levels in dryland agroecosystems. The main objective of the study was to evaluate the decomposition dynamics and nutrient release from crop residues from different cropping systems in a semiarid Mediterranean agroecosystem.
Methods: A litterbag experiment was conducted from July of 2020 to June of 2021 to examine the shoot and root decomposition dynamics of vetch, pea and barley residues in different cropping systems: a barley continuous monoculture, B(B), and the two phases of two crop rotations: barley in rotation with vetch, B(V) and V(V); barley in rotation with barley, B(P) and P(B).
Results: From week 9 to 14, a general decay of residues was observed caused by the higher soil moisture and temperatures. After 48 weeks of decomposition, a 41% and 60% of mass remaining was found corresponding to vetch and pea surface residues respectively, whilst barley mass remaining ranged 87-76% depending on the cropping system. In root residues, the mass decay from legume residues (40-44%) was higher compared to barley residues (17-29%). Exponential decay and linear models explained the residues decomposition observed in our study conditions. The C to N ratio of residues and edaphoclimatic conditions played a major role controlling the decomposition and nutrient loss rates.
Conclusion: According to our results, in Mediterranean semiarid agroecosystems, residue decomposition and nutrient release dynamics from different crop residues need to be considered for improving the sustainability of the cropping systems.
Stability Analysis of Milling Chatter in Six-Degree-of-Freedom Industrial Robots
Authors: Zhang Yun , Zhou Tingting , Hu Tianliang , Qiao Jinwei 
Published: January 2023

Abstract
Due to the low structural rigidity of six-DOF industrial robots, the chattering phenomenon is prone to occur under the excitation of periodic milling force, which has an effect on the processing quality of workpieces. In this paper, the influence of milling parameters on the chatter stability of six-DOF robot milling is studied, under the consideration of the modal coupling effect and the regenerative effect on milling stability. First, a modal equation considering both the modal coupling effect and the regenerative effect is developed. Second, based on the fully discrete method, the chatter stability domain model of six-DOF robot (namely, the stability lobe diagram) is established, and the influences of the axial depth of cut, radial depth of cut, and feed rate on the stability of the machining system are analyzed. Finally, the accuracy of the prediction results of the chatter stability domain model is verified by milling experiments.
Effect of load pattern used for seismic design on the collapse capacity of steel moment frames
Authors: Farzaneh Sara , Khosravi Horr 
Published: January 2023

Abstract

Well-known design codes use different lateral load patterns for Equivalent Lateral Force (ELF) procedure. However, the influence of using different load patterns on the collapse capacity of structures has rarely been investigated. It is obvious that using different lateral load patterns for design leads to different stiffness and strength distribution in the height of the structure and affects the collapse capacity of the structure. This paper aims to study the influence of designing structures with different lateral load patterns on their collapse capacity. For this purpose, three steel moment-resisting frames (SMRFs) have been designed with 6 different lateral load patterns. The structures are designed in such a way that all the structures designed with different load patterns have the same weight. Incremental dynamic analysis (IDA) and fragility analysis are performed for all structures and the median collapse intensities are compared. The results of this study clarify the significant effect of designing with different lateral load patterns on the collapse probability of some structures.
Emergence and clonal dissemination of KPC-3-producing Pseudomonas aeruginosa in China with an IncP-2 megaplasmid
Authors: Ge Haoyu , Qiao Jie , Xu Hao , Liu Ruishan , Zhao Junhui , Chen Ruyan , Li Chenyu , Guo Xiaobing , Zheng Beiwen 
Published: January 2023

Abstract
Background: Although Klebsiella pneumoniae Carbapenemase (KPC) -type class A β-lactamases spread widely throughout the world, KPC-3-producing isolates are rarely reported in China. This study aims to explore the emergence, antibiotic resistance profiles, and plasmid characteristics of blaKPC-3-carrying Pseudomonas aeruginosa.
Methods: Species identification was performed by MALDI-TOF-MS, and antimicrobial resistance genes (ARGs) were identified by polymerase chain reaction (PCR). The characteristics of the target strain were detected by whole-genome sequencing (WGS) and antimicrobial susceptibility testing (AST). Plasmids were analyzed by S1-nuclease pulsed-field gel electrophoresis(S1-PFGE), Southern blotting and transconjugation experiment.
Results: Five P. aeruginosa strains carrying blaKPC-3 were isolated from two Chinese patients without a history of travelling to endemic areas. All strains belonged to the novel sequence type ST1076. The blaKPC-3 was carried on a 395-kb IncP-2 megaplasmid with a conserved structure (IS6100-ISKpn27-blaKPC-3-ISKpn6-korC-klcA), and this genetic sequence was identical to many plasmid-encoded KPC of Pseudomonas species. By further analyzing the genetic context, it was supposed that the original of blaKPC-3 in our work was a series of mutation of blaKPC-2.
Conclusions: The emergence of a multidrug resistance IncP-2 megaplasmid and clonal transmission of blaKPC-3-producing P. aeruginosa in China underlined the crucial need for continuous monitoring of blaKPC-3 for prevention and control of its further dissemination in China.
Accumulation of oxysterols in the erythrocytes of COVID-19 patients as a biomarker for case severity
Authors: Khedr Alaa , Khayat Maan , Khayyat Ahdab , Asfour Hany , Alsilmi Rahmah , Kammoun Ahmed 
Published: January 2023

Abstract
Background: Due to the high risk of COVID-19 patients to the formation of thrombosis in the circulating blood, atherosclerosis, and myocardial infarction, it was necessary to study the lipidomic of the erythrocytes. The aim of this work was to analyze the pathogenic oxysterols and acylcarnitines in the erythrocyte’s homogenate of COVID-19 patients and to estimate the case severity from the level of oxysterols.
Methods: A linear ion trap mass spectrometry coupled with high-performance liquid chromatography was used to investigate the extract of erythrocytes homogenate. The toxic biomarkers that primarily induce the generation of dead red blood cells, were characterized, and quantified in the erythrocytes of COVID-19 patients and matched with healthy volunteers.
Results: A total of 30 patients and 30 healthy volunteers were enrolled. The concentration of five oxysterols and six acylcarnitines in the erythrocyte’s homogenate of COVID-19 patients was significantly upregulated matching with healthy subjects at p <0.05. The average total concentration of oxysterols was 23.36 ± 13.47 μg/mL in the erythrocytes of COVID-19 patients, while samples of healthy volunteers showed a total concentration of 4.92 ± 1.61 μg/mL. The average concentration level of 7-ketocholesterol and 4-cholestenone in the COVID-19 patients was higher by five and ten-fold compared to the healthy subjects. Also, the average concentration of acylcarnitines in the erythrocyte's homogenate of COVID-19 patients was high by 2-to-4-fold in comparison with the healthy volunteers.
Conclusions: The abnormally high levels of oxysterols and acylcarnitines found in the erythrocytes of COVID-19 patients were associated with the severity of the case's complications and substantial risk of thrombosis. The concentration of oxysterols in the erythrocyte homogenate could be useful as a diagnostic biomarker to stand on the COVID-19 case severity.
Propagation and amplification law of undetermined stray light and influence of signal-to-noise ratio in a multipass amplifier system
Authors: Wang Zhenzhou , Xie Na , Huang Zeyu , Fu Xingqiao , Han Jinghua , Feng Guoying , Zhou Kainan , Su Jingqin 
Published: January 2023

Abstract
Multipass amplifier systems in areas such as high-energy-density physics and astrophysics play an important role, but the undetermined stray light caused by defects seriously influencing the output signal-to-noise ratio (SNR) and even resulting in the failure of the main pulse bombardment. In this study, the modulation of nondeterministic stray light caused by the defects in the optical paths of different components in a multipass amplifier system was examined, and a Mie scattering model of multi-crack defects established. Using ray-tracing simulation, the spatial and temporal distribution of stray light was analysed, and experimental verification was conducted. The law of energy amplification for nondeterministic stray light caused by component defect modulation and an empirical formula for the signal to noise ratio of the pre-pulse system were established. This study provides a reference for the accurate troubleshooting of components, optical path defects and an important theoretical basis for the processing and correction of system components.
We chased COVID-19; Did we forget Measles? - A machine learning approach to public discourse and sentiment analysis on spiking Measles cases
Authors: S. Anoop V. , Thekkiniath Jose 
Published: January 2023

Abstract
Objectives: This study employs text mining and natural language processing approaches for analyzing and unearthing public discourse and sentiment towards the recent spiking Measles outbreaks reported across the globe.
Study design: A detailed qualitative study was designed using text mining and natural language processing on the user-generated comments from Reddit, a social news aggregation and discussion website.
Methods: A detailed analysis was conducted using topic modeling and sentiment analysis on Reddit comments (n=87203) posted between October 1 and December 15, 2022. Topic modeling was used to leverage major themes related to the Measles health emergency and public discourse; the sentiment analysis was performed to check how the general public responded to different aspects of the outbreak.
Results: Our results revealed several intriguing and helpful themes, including parental concerns, anti-vaxxer discussions, and measles symptoms from the user-generated content. The results further confirm that even though there have been administrative interventions to promote vaccinations that affirm the parents' concerns to a greater extent, the anti-vaccination or vaccine hesitancy prevalent in the general public reduces the effect of such intercessions.
Conclusions: A proactive analysis of public discourse and sentiments during health emergencies and disease outbreaks is vital. This study effectively explored public perceptions and sentiments to assist health policy researchers and stakeholders in making informed and data-driven decisions.}
Importance of C3=C4 double bondof plant alkaloid Harmine on its binding interaction with Hemoglobin: Multi-spectroscopic and molecular modelling studies
Authors: Burman Mangal Deep , Bag Sagar , Bhowmik Sudipta 
Published: January 2023

Abstract
Harmine and harmaline are two structurally similar β-carboline plant alkaloids with various therapeutic properties, having difference in C3 = C4 double bond only. Nature of the interaction between hemoglobin (Hb) and harmine and harmaline was investigated in this study by employing different spectroscopic methods and molecular modeling. The spectrum of Hb showed hypochromic changes in the presence of both harmine and harmaline but with different efficiencies. The fluorescence quenching of harmine and harmaline occurred in the presence of Hb indicating stronger interation of harmine with Hb. Stoichiometry study revealed that both harmine and harmaline interact with Hb in around 1:1 ratio. The circular dichroism study demonstrate no conformational change of Hb in the presence of alkaloids. From the melting study, it was found that both harmine and harmaline do not affect the stability of Hb. Molecular modeling study supported the above findings that harmine containing the C3 = C4 double bond in its structure, interacts strongly with Hb on the surface of α2 chain compared to harmaline. This study helps us to understand that slight structural differences in harmine and harmaline can alter interaction properties significantly and these key informations may help in the drug discovery processes.
Genetic evidence for Colletotrichum gloeosporioides transmission between the invasive plant Ageratina adenophora and co-occurring neighbor plants
Authors: Zeng ZhaoYing , Yang ZhiPing , Yang AiLing , Li YuXuan , Zhang HanBo 
Published: January 2023

Abstract
To understand the disease-mediated invasion of exotic plants and the potential risk of disease transmission in local ecosystems, it is necessary to characterize population genetic structure and spatio-temporal dynamics of fungal community associated with both invasive and co-occurring plants. In this study, multiple genes were used to characterize the genetic diversity of 165 strains of Colletotrichum gloeosporioides species complex (CGSC) isolated from healthy leaves and symptomatic leaves of invasive plant A. adenophora, as well as from symptomatic leaves of its neighbor plants from 11 geographic sites in China. The data showed that these CGSC strains had a high genetic diversity in each geographic site (all Hd > 0.67 and Pi > 0.01). Haplotype diversity and nucleotide diversity varied greatly in individual gene locus: gs had the highest haplotype diversity (Hd = 0.8972), gapdh had the highest nucleotide diversity (Pi = 0.0705), and ITS had the lowest nucleotide diversity (Pi = 0.0074). Haplotypes were not clustered by geographic site, invasive age or isolation source. Both AMOVA and neutrality tests indicated these CGSC strains occurred gene exchange among geographic populations but did not experience population expansion along with A. adenophora invasion progress. Our data indicated that A. adenophora primarily accumulated these CGSC fungi in the introduced range, suggesting a high frequency of CGSC transmission between A. adenophora and co-occurring neighbor plants. This study is valuable for understanding the disease-mediated plant invasion and the potential risk of disease transmission driven by exotic plants in local ecosystems.