bluuebunny/crossref_metadata_2025_split huggingface dataset:
Risk management in diffused structures: Analysis for Shared Services Centers
Authors: Zaporowska Zuzanna , Szczepański Marek 
Published: March 2024

Research background: Shared Services Centers (SSCs) are often a spin-off of corporate services to separate all operational tasks from the corporate headquarters. The primary focus of the headquarters should be on leadership and corporate governance. However, many SSCs have also been given some corporate functions. Risk management is a significant part of governance and one of its principles. The effectiveness of risk management depends on its integration into the organization’s governance, including decision-making. The question is how a modern SSC manages this part of governance.
Purpose: This study aims to present the conditions that prove the implementation of risk management in SSCs and to evaluate the most effective risk management model.
Research methodology: Targeted literature review followed by surveys and a case study.
Results: The risk management process consists of several stages that are repeated in many models (identification and risk assessment, risk management model selection, and monitoring). Thus, it is possible to use each model in the SSC concerning the migrated processes, considering the limitations of the strategic goals definition. However, not all methods will find a potential application in risk management in the SSC, considering the most effective risk assessment.
Novelty: While the literature provides models that can be of use, a lack of specific guidelines has been recognized, especially regarding the risk management aspect in SSCs. In the last decade, the focus was on the expected benefits coming from standardization, ignoring the new risks in SSC processes.
Morse – Smale 3-Diffeomorphisms with Saddles of the Same Unstable Manifold Dimension
Authors:   National Research University “Higher School of Economics”, Osenkov E. M. ,   National Research University “Higher School of Economics”, Pochinka O. V. 
Published: March 2024

In this paper, we consider a class of Morse – Smale diffeomorphisms defined on a closed 3-manifold (not necessarily orientable) under the assumption that all their saddle points have the same dimension of the unstable manifolds. The simplest example of such diffeomorphisms is the well-known “source-sink” or “north pole – south pole” diffeomorphism, whose non-wandering set consists of exactly one source and one sink. As Reeb showed back in 1946, such systems can only be realized on the sphere. We generalize his result, namely, we show that diffeomorphisms from the considered class also can be defined only on the 3-sphere.
Pengaruh Kedisiplinan Belajar Terhadap Hasil Belajar Matematika Peserta Didik Kelas V Sekolah Dasar
Authors: Shinta Dewi , Riyadi Riyadi , Atmojo Idam Ragil Widianto 
Published: March 2024

This riset aims to determine whether there is a positive effect of learning discipline on the cognitive learning outcomes of mathematics for fifth grade students of public elementary schools in Laweyan sub-district. The quantitative methodologies used in this study are survey-type with an associatie research design. Students in fifth grade from elementary school in Laweyan Subdistrict made up the entire study’s population in the 2022/2023 academic year. The research sample was fifth grade students at SD N Pajang IV, SD N Tunggulsari 01, SD N Bratan 02 with a total of 71 students. Tests and questionnaires have been used as the data collection methods. Simple linear regression was used to examine the research data. As shown by the acquisition of (19.509) &gt; in the regression equation = 6.078 + 0.869X, the reset’s findings show that learning discipline has a positive and significant impact on the mathematics learning outcomes of fifth grade students in public elementary schools in Laweyan District in the 2022/2023 academic year. According to the analysis of R squared coefficient f determination (0,847), 84,7% of fifth grade children in the public elementary schools in the Laweyan District showed improved math learning outcomes as a result of learning discipline.
Meningkatkan kompetensi pedagogik guru SDN 2 Sambongrejo dalam mengembangkan indikator dan instrumen penilaian melalui supervisi klinis di semester I tahun pelajaran 2019/2020
Authors: Suntari Suntari 
Published: March 2024

<p>Abstract. the purposes of this research are to increase and analyze the increasing of 2 Sambongrejo Elementary School teachers’ pedagogical competency in developing the indicators and evaluation instruments through clinical supervision on the First Semester of the 2019/2020 Year Academic. The type of this research is a School Action Research (SAR). This research is held on 2 Sambongrejo Elementary School, Sub district of Tunjungan, Regency of Blora. This research is going on the middle First Semester of the 2019/2020 Year Academic. The instruments of collecting data of this research are the sheets of observation, the sheets of questioner and camera application on the cell phone. Technique of analyzing data of this research is comparative description. The procedure of this research is using Cycle Model. The conclusion of this research is 2 Sambongrejo Elementary School teachers’ pedagogical competency in developing the indicators and evaluation instruments through clinical supervision on the First Semester of the 2019/2020 Year Academic increased from low category (D) become high category (B). On the Early Condition, pedagogical competency in developing the indicators and evaluation instruments included as low category (D). On the First Cycle, pedagogical competency in developing the indicators and evaluation instruments included as moderate category (C). On the Second Cycle, pedagogical competency in developing the indicators and evaluation instruments included as high category (B). </p><p>Kata kunci: teacher competencies, instrument, supervision, elementary school</p>
Upaya meningkatkan hasil belajar siswa dalam mengerjakan soal cerita pada mata pelajaran matematika melalui metode bermain kartu soal pada siswa kelas VI sekolah dasar
Authors: Khuzaimah Eva 
Published: March 2024

<p>Abstract. Classroom action research aims descriptively to find out the influence of the method of playing card questions on improving the ability to work on story problems in mathematics class VI in SD Negeri 1 in the 2017/ 2018 academic year. Subjects given the action are grade VI in SD Negeri 1 in the 2017/2018 academic year of 26 students and divided into 6 groups. The results of the study descriptively showed that the tendency of mathematics learning outcomes for Grade VI students of SD Negeri 1 Padaan was an increase, namely with the acquisition of an average score before the action was held at 59.69 and after the action was taken to be 66.5 thus meaning there was an increase in achievement by 6 , 81.<br />Kata kunci: learning outcomes, question cards, story problems, elementary school</p>
Peningkatan hasil belajar PKn melalui model pembelajaran role playing pada siswa kelas V SD Negeri 1 Serenan Juwiring Klaten
Authors: Maryatun Sri 
Published: March 2024

<p>Abstract. The learning process of Civics in SD Negeri 1 Serenan Juwiring Klaten rarely uses learning methods that attract the attention and activeness of all students in the class. The purpose of this study was to investigate efforts to improve Civics learning outcomes through role playing learning models in fifth grade students of SD Negeri 1 Serenan Juwiring Klaten in the 2017/1988 academic year. This research is a classroom action research (CAR) with research into subjects becoming fifth grade students of SD 1 Serenan Juwiring Klaten for the 2017/2018 academic year. Data collection methods used in this study were test, interview and observation methods. The collected data were analyzed by descriptive analysis. This can be seen from the test results that have increased at the end of the first cycle test the average valueof students is 75.07 and in the second cycle the average value is 84.07.<br />Kata kunci: experimental method, role playing, elementary school</p>
Identifikasi kesulitan belajar matematika di rumah selama pandemi covid-19 pada siswa kelas IV Sekolah Dasar
Authors: Fauziah Ika Berliana , Sukarno Sukarno , Sriyanto Muhammad Ismail 
Published: March 2024

<p><strong>Abstract.<em> </em></strong><em>This research aims to describe the aim of this research is to identify difficulties in learning mathematics at home during the Covid-19 pandemic which took place in grade </em><em>4<sup>th</sup></em><em> elementary school. The research focus in writing this thesis is the method used in this research is descriptive qualitative with a phenomenological approach. The data sources of this research were all </em><em>4<sup>th</sup></em><em> students, parents, and </em><em>4<sup>th</sup></em><em> students teachers. The data collection technique was done by using questionnaires, interviews, and documentation studies. The data validity test used in this study was technical triangulation and source triangulation. Data were analyzed using the data analysis model Miles and Huberman. </em><em>The results of this study indicate that student learning problems occur because students have difficulty understanding concepts, difficulty solving problems in story problems, and difficulties in numeracy skills. The difficulty in understanding the concept is as much as 78%, the difficulty in solving a story problem is as much as 90%, and the difficulty in calculating in number operations is as much as 85%. The problems that occur are caused by several factors. Factors from within students and outside students. seen from these factors, efforts can be made to solve learning difficulties experienced by students by doing remedies, doing exercises, taking private lessons, and maintaining communication with the teacher.</em></p><p> </p>
Marine occupancy responses escalate according to species thermal bias over Early Jurassic warming
Authors: Reddin Carl , Landwehrs Jan , Mathes Gregor , Ullmann Clemens Vinzenz , Feulner Georg , Aberhan Martin 
Published: March 2024

Abstract

A mismatch of species thermal preferences to their environment may forewarn that some assemblages will undergo greater reorganization, extirpation, and possibly extinction, than others under climate change. Here, we examined the effects of regional warming on marine benthic species occupancy and assemblage composition over one-million-year time steps during the Early Jurassic. Thermal bias, the difference between modelled regional temperatures and species’ long-term thermal optima, predicted species responses to warming in an escalatory order. Species that became extirpated or extinct tended to have cooler temperature preferences than immigrating species, while regionally persisting species fell midway. Larger regional changes in summer seawater temperatures (maximum + 10°C) strengthened the relationship between species thermal bias and the escalatory order of responses, which was also stronger for brachiopods than bivalves, but the relationship was overridden by severe seawater deoxygenation. At + 3°C seawater warming, our models estimate that around 5% of an assemblage’s pre-existing benthic species was extirpated, and around one-fourth of the new assemblage being immigrated species. Our results validate thermal bias as an indicator of future extinction, persistence, and immigration of marine species under modern magnitudes of climate change.
SGEO: Equalization Optimizer with Hybrid Learning Strategies for UAV Path Planning in Complex 3D Environments
Authors: Zheng Meng , He Qing , He QingNi 
Published: March 2024

Abstract

Unmanned Aerial Vehicle (UAV) route planning is an intricate issue that requires the comprehensive consideration of multiple factors and the combination of suitable strategies to achieve efficient and safe flight paths. Its purpose is to plan a suitable navigational path for the drone to achieve a specific task or avoid obstacles. In practical applications, UAVs are usually required to accomplish tasks in a variety of complex environments, resulting in the feasible flight paths will be reduced and path planning for UAVs becomes difficult. Accordingly, we design a simple yet useful planner, called Self-adaptive Golden Equilibrium Optimization algorithm (SGEO). The proposed algorithm combines the new self-adaptive approach, the acceleration control factor and the Golden-SA strategy in order to balance the exploitation and exploration capabilities. The novel self-adaptive strategy is used to expand the global search range of the algorithm and enhance its ability for global exploration; the acceleration control factor is introduced to control the parameters a1 and a2 and improve the convergence ability of the algorithm; the Golden-SA strategy helps the candidate particles achieve better balance between different dimensions based on the golden ratio and sine function, this enables the particles to explore the search space more comprehensively. The limitations in UAV route planning are translated into the objective function, and four more algorithms are introduced to compare with SGEO in two different circumstances. The simulation findings reveal that SGEO excels at three-dimensional path planning for UAV in complicated environments.
The clinical distribution characteristics of Staphylococcus aureus carrying the PVL gene and the prognostic value of the neutrophil to lymphocyte ratio for infection with Staphylococcus aureus carrying the PVL gene
Authors: Zhang Le , Wang Yueling , Hao Yingying , Bai Yuanyuan , Song Zhen , Wu Yulong 
Published: March 2024

Abstract
Objective
To understand the prevalence and the drug resistance of the Staphylococcus aureus (S. aureus) isolates harboring Panton–Valentine leukocidin (PVL) gene in the Shandong Provincial Hospital in 2023. The clinical application values of white blood cell (WBC), C-reactive protein (CRP), and neutrophil-to-lymphocyte ratio (NLR) in the diagnosis of PVL-positive S. aureus infection were investigated.
Methods
166 S. aureus isolates were separated from inpatients in the Shandong Provincial Hospital in 2023. We determined the presence of the mecA gene and genes encoding PVL using PCR, and the department distributions and drug resistance of the isolates were analyzed. Groups were grouped according to the mecA and PVL gene test results. Contemporaneous 100 subjects undergoing healthy physical examination were selected as the control group. The levels of WBC, CRP, and NLR of each group were collected, and the clinical application values of WBC, CRP, and NLR for PVL-positive S. aureus infection were compared.
Results
Among the 166 strains of S. aureus, 73 isolates were Methicillin-resistant S. aureus (MRSA). The prevalence of MRSA among inpatients in the Surgical Department, Internal Medicine Department, Intensive Care Unit (ICU), Emergency and Pediatric Department was 64.4%, 12.3%, 15.1%, 4.1% and 4.1%, respectively. PVL genes were detected in 88 strains of S. aureus, most of which were Methicillin-susceptible S. aureus (MSSA). The levels of WBC, CRP, and NLR increased significantly during S. aureus infection, and the level of NLR in the PVL-positive group was significantly higher than that in the PVL-negative group (Z= -2.13, P = 0.033). Still, the levels of WBC, and CRP were rarely different between the PVL-positive group and PVL-negative group.
Conclusions
This study analyzed the prevalence of S. aureus harboring the PVL gene in Shandong Provincial Hospital in 2023. Compared with WBC and CRP, NLR had a higher clinical application value for PVL-positive S. aureus, and NLR can be used as a screening indicator for PVL-positive S. aureus infection.
Unraveling the Complex Population History and Intergradation of Pond Sliders (Trachemys scripta) through Approximate Bayesian Computation Analysis of the Mitochondrial Control Region
Authors: Lin Shi , Shen Zong-Yu , Chou Ming-Hsun , Spencer Carol , McGuire Jimmy , de Queiroz Kevin , Huang Jen-Pan 
Published: March 2024

Abstract

Trachemys scripta (Pond Sliders), a North American freshwater turtle species, includes three subspecies, T. s. scripta, T. s. elegans, and T. s. troostii, whose relationships and status remain enigmatic. Particularly intriguing is T. s. troostii, which exhibits weak genetic distinctiveness from the other two subspecies. Rather than viewing their evolution as a simple bifurcating process, our study delves into the complex demographic history of T. s. troostii. We leveraged mitochondrial control region DNA sequences to investigate the subspecies’ demographic history and intraspecific systematics, with special emphasis on T. s. troostii. Haplotype network and phylogenetic analyses using Maximum Likelihood and Bayesian Inference consistently revealed that T. s. troostii is incompletely differentiated genetically from T. s. elegans. To investigate the demographic history of the three subspecies, we conducted the model-testing-based approximate Bayesian computation (ABC) analysis. Our findings support the hypothesis that T. s. troostii originated through admixture between T. s. scripta and T. s. elegans, with later secondary contact with the latter shaping the genetic makeup of present-day T. s. troostii populations.
Lutein Attenuates Isoproterenol-Induced Cardiac Hypertrophy in Rats
Authors: Santos Vinícius Cisneiros de Oliveira , Conceição Michael Ramon Lima , de Souza Diego Santos , Albuquerque-Júnior Ricardo Luiz Cavalcanti , Rabelo Thallita Kelly , Silva-Neto Júlio Alves da , de Araújo Andreza Melo , Orts Diego Jose Belato , Silva Polyana Leal da , Roman-Campos Danilo , de Vasconcelos Carla Maria Lins 
Published: March 2024

Abstract
Purpose
Lutein (LUT) is a carotenoid found in fruits, and green vegetables with potent antioxidant, anti-inflammatory and cardioprotective action. However, the mechanisms involved in the cardioprotection against cardiac hypertrophy (CH) remains unkown.
Objectives
Investigate the anti-hypertrophic action of LUT in rats using the isoproterenol-induced CH model.
Methods
For CH induction, isoproterenol (ISO; 4.5 mg/kg/day, 7 days, i.p) was administrated and animals were treated with LUT (20 mg/kg/day, 7 days) or apocynin (APO, 10 mg/kg/day, 7 days). To investigate the participation of the nitric oxide (NO) pathway in the mechanism of action of LUT, the animals were treated with L-NAME (20 mg/kg/day, 7 days), an inhibitor of NO synthase.
Results
LUT and APO animals showed attenuated morphometric, fibrosis and inflammatory enhancement compared to ISO group, in addition to reducing the infarct area and the mortality rate triggered by ISO. Serum levels of CPK-TOTAL, CPK-MB, LDH, AST and ALT were significantly reduced in animals treated with LUT when compared to the ISO group. LUT attenuated the electrocardiographic changes induced by ISO (increase of QRS and QTc and inversion of T wave) and prevented the reduction of left ventricular pressure and heart rate in the ISO group. ISO increased the production of reactive oxygen species (ROS) in the heart which was prevented by LUT. ISO increased the Bax protein expression, which was attenuated by LUT treatment. Also, L-NAME partially reversed the LUT-mediated cardioprotection.
Conclusion
The results show that LUT exerts a cardioprotective effect against CH in rats partially related to NO pathway.
Profile of cross-reactivity to common pollen allergens in Northwest China based on Component Resolved Diagnosis
Authors: Li Aoli , Huang Zhifeng , Ye Qingyuan , Zheng Xianhui , Zhang Jiale , Chen Tong , Luo Wenting , Sun Baoqing 
Published: March 2024

Abstract

The prevalence of allergic diseases such as Allergic Rhinitis and Asthma is steadily increasing globally, with pollen allergy being one of the most significant sensitizing factors. However, the cross-reactivity of different pollen allergies remains unclear, posing challenges in the diagnosis and treatment of individuals with multiple sensitivities. In this study, the Component Resolved Diagnosis technique was employed to simultaneously measure the specific IgE concentrations of 52 patients against Art and its components (Art v 1), Phl p and its components (Phl p 1/4/5/6/7/12), Bet v and its components (Bet v 1/2), Amb a and its component (Amb a 1), and Amb p. Additionally, sIgE inhibition tests were conducted for Art v, Phl p, and Bet v. Among Art v -positive patients, 64.6% showed positivity for Art v 1. In Phl p-positive patients, Phl p 12 had the highest positivity rate (75.0%). Among Bet v-positive patients, 75.6% exhibited positivity for Bet v 2, whereas for Amb a and Amb p-positive patients, 23.7% and 29.0% respectively showed positivity for Amb a 1. The sIgE inhibition assays results revealed that Art v had inhibition rates greater than 73.2% against Phl p and its component Phl p 12, as well as Bet v and its component Bet v 2. Simultaneously, Phl p had inhibition rates of 79.20% to 89.87% against Phl p 12 and Bet v. Bet v showed inhibition rates ranging from 11.9% to 59.8% against Phl p and Art v, with a better inhibition rate (76.80%) against Phl p 12. In conclusion, Art v 1 is identified as the principal component of Art v. The profilin proteins of Phl p and Bet v (Phl p 12 and Bet v 2), are implicated as potential cross-reactive elements contributing to polysensitization in patients with respiratory allergies in the Northwest region of China. This cross-reactivity leads to a shared sensitization mechanism among pollen allergens such as Art v, Phl p, and Bet v.
Numerical study and optimum structural design on the characteristics of heat transfer and flow resistance in wavy tube exchanger
Authors: Cai Baowei , Huang Luqiong , Han Fanglin , Song Shidi , Wang Yicheng 
Published: March 2024

Abstract

Performances of heat transfer and flow resistance in the wavy tube heat exchanger were explored numerically by different turbulence models and near wall treatments in Fluent referring to the experiment of single tube exchanger. On the basis of this, further research on the flow field distribution, secondary flow, structure sensibility, modification and optimization were carried out. The results suggest that, RNG k-ε model with enhanced wall treatment is identified to provide superior predictions in several ways. In virtue of the peculiar structure, the coefficient of heat transfer and resistance ascends enormously. Secondary flow vortexes turn up and evolve since extremely low Re, and give rise to the variation of heat transfer and resistance. In low Re, heat transfer performance is only concerned with bending degree, while it rests upon both bending degree and wavelength in high Re. Besides, supplementing an appropriate changeover segment can improve the comprehensive performance apparently. It is hopeful that the results may provide a reference to the design of exchanger for heat transfer enhancement.