bluuebunny/crossref_metadata_2025_split huggingface dataset:
Prediction of accessory canals on the apical third of mandibular second molar based on micro-computed tomography
Authors: Wang Yinghui , Chen Yufan , Jing Yao , Qiao Feng , Yin Bin , Liu Juan , Zhou Jie , Chen Min , Wu Ligeng 
Published: January 2023

Objective: The aim of this study was to investigate the anatomical factors influencing the incidence of accessory canals (ACs) in the apical third of the mandibular second molar in Chinese population. Methods: Micro-CT was performed on 86 root canals. The five possible factors influencing the incidence of ACs in the apical third were named X1 to X5. These factors were the canal length of the apical third, fused roots, location of apical foramen, curvature of the root canals, and complexity of the canals. Statistical analysis was performed by the least absolute shrinkage and selection operator, receiver operating characteristic curve, and the χ2 test (α = 0.05). Results: The selected variables in the least absolute shrinkage and selection operator regression model were fused roots and complex root canals. The area under the curve was 0.737, indicating that the model had a certain predictive ability. ACs were mainly distributed in the buccal wall and mesial wall of root canals in the apical third of molars (p < 0.05). Conclusions: For Chinese population, fused roots and complex root canals are anatomical factors influencing ACs in the apical one-third of mandibular second molars, and the ACs mainly occur in the buccal wall and mesial wall of the root canal.
Fast peg-in-hole assembly policy for robots based on experience fusion proximal optimization
Authors: Men Yu , Jin Ligang , Li Fengming , Song Rui 
Published: January 2023

Background: As an important part of robot operation, peg-in-hole assembly has problems such as a low degree of automation, a large amount of tasks and low efficiency. It is still a huge challenge for robots to automatically complete assembly tasks because the traditional assembly control policy requires complex analysis of the contact model and it is difficult to build the contact model. The deep reinforcement learning method does not require the establishment of complex contact models, but the long training time and low data utilization efficiency make the training costs very high. Methods: With the aim of addressing the problem of how to accurately obtain the assembly policy and improve the data utilization rate of the robot in the peg-in-hole assembly, we propose the Experience Fusion Proximal Policy Optimization algorithm (EFPPO) based on the Proximal Policy Optimization algorithm (PPO). The algorithm improves the assembly speed and the utilization efficiency of training data by combining force control policy and adding a memory buffer, respectively. Results: We build a single-axis hole assembly system based on the UR5e robotic arm and six-dimensional force sensor in the CoppeliaSim simulation environment to effectively realize the prediction of the assembly environment. Compared with the traditional Deep Deterministic Policy Gradient algorithm (DDPG) and PPO algorithm, the peg-in-hole assembly success rate reaches 100% and the data utilization rate is 125% higher than that of the PPO algorithm. Conclusions: The EFPPO algorithm has a high exploration efficiency. While improving the assembly speed and training speed, the EFPPO algorithm achieves smooth assembly and accurate prediction of the assembly environment.
Relationship between physicochemical parameters and the abundance of zooplankton in Lake Mweru-Wantipa, Zambia
Authors: ANAMUNDA AONGOLA , LAMTANE HIEROMIN A. 
Published: January 2023

Abstract. Anamunda A, Lamtane HA. 2022. Relationship between physicochemical parameters and the abundance of zooplankton in Lake Mweru-Wantipa, Zambia. Intl J Bonorowo Wetlands 12: 33-40. This study aimed to assess the abundance of zooplankton and their relationship with physicochemical parameters within Lake Mweru-Wantipa, Zambia. A National Park borders the lake on one side and settlements on the other, so four sampling stations were selected, two on each side of the lake. Five physicochemical parameters, including temperature, turbidity, salinity, pH, and dissolved oxygen, were measured monthly using portable instruments concurrently with a collection of duplet zooplankton samples at each sampling point at depths between 0.1m and 0.5m. All physicochemical parameters were significantly different between the two sites (p<0.05) apart from temperature and pH. A total of 13 genera of zooplankton were identified, belonging to four groups, namely, rotifers, cladoceran, copepods, and ostracods. The cladoceran had the highest number of species (6), followed by copepods (4) in both sites. However, the copepods had the largest contribution in abundance in both sites. The diversity was high in settlement areas, but the National Park had higher species richness. There was a significant difference in species diversity between the two sites (t=3.96; p=0.001). The most abundant group was the cyclopoid on both sides of the lake, followed by the Moina on the settlement site and the Daphnia sp. on the National Park site. The densities of Molina, Simocephalus, Ceriodaphinia, and Cypris were significantly different between the two sites (p<0.05). Except for copepods, all groups were significantly different between the two sites (p<0.05). Generally, the total zooplankton density was not significantly different between the two sites (t=0.73; p=0.06). The results showed that the zooplankton abundance was influenced by turbidity in settlement areas and pH in National park areas.
Characteristics of medication-induced xerostomia and effect of treatment
Authors: Ito Kayoko , Izumi Naoko , Funayama Saori , Nohno Kaname , Katsura Kouji , Kaneko Noboru , Inoue Makoto 
Published: January 2023

Objective
Side-effects of medications cause xerostomia. There have been cases where a medication has been discontinued owing to its severe side-effects. Therefore, the xerostomia must be treated to ensure that the primary disease is managed effectively. This study analyzed the actual status of patients with medication-induced xerostomia and investigates factors associated with its improvement.

Methods
This study assessed 490 patients diagnosed with medication-induced xerostomia who had an unstimulated salivary flow of ≤0.1 mL/min and received treatment for xerostomia at a xerostomia clinic. Patient age, sex, medical history, medications used, disease duration of xerostomia, and psychological disorders were recorded. The anticholinergic burden was assessed using the Anticholinergic Cognitive Burden scale. The unstimulated salivary flow was measured by the spitting method. According to their symptoms and diagnoses, the patients were introduced to oral lubricants, instructed on how to perform massage, and prescribed Japanese herbal medicines, and sialogogues. Factors associated with the subjective improvement of xerostomia and objective changes in the salivary flow rate were recorded at six months.

Results
Xerostomia improved in 338 patients (75.3%). The improvement rate was significantly lower in patients with psychiatric disorders (63.6%) (P = 0.009). The improvement rate decreased as more anticholinergics were used (P = 0.018). However, xerostomia improved in approximately 60% of patients receiving three or more anticholinergics. The unstimulated salivary flow increased significantly more in patients who reported an improvement of xerostomia (0.033±0.053 mL/min) than in those who reported no improvement (0.013±0.02 mL/min) (P = 0.025).

Conclusion
Xerostomia treatment improved oral dryness in 75.3% of patients receiving xerogenic medications in this study. If xerostomia due to side-effects of medications can be improved by treatment, it will greatly contribute to the quality of life of patients with xerogenic medications and may reduce the number of patients who discontinue medications.
Effectiveness of online practical education on vaccination training in the students of bachelor programs during the Covid-19 pandemic
Authors: Shirahmadi Samane , Hazavehei Seyed Mohamad Mehdi , Abbasi Hamid , Otogara Marzie , Etesamifard Tahere , Roshanaei Ghodratolah , Dadaei Neda , Taheri Malihe 
Published: January 2023

Background
The importance of immunization and the necessity of achieving the goals of the immunization expansion plan and the critical role of undergraduate public health students in attaining these goals in the Covid-19 pandemic is evident. The present study aimed at investigating the effectiveness of using online educational videos on practical learning of vaccination in the apprenticeship stage during covid-19 pandemic: a randomized controlled trial.

Material and methods
This experimental study was conducted on 120 students (60 interventions and 60 control groups) at Hamadan University of Medical Sciences during 2019–2020. The intervention included training vaccination skills through educational videos based on self-efficacy theory, which was conducted for two weeks each week in two sessions of two hours for the intervention group using an educational video. A researcher-made questionnaire and a performance checklist were used to collect data. Data were analyzed using SPSS-16 software. Paired t-test, independent t-test, and Chi-square.

Results
The mean age of the subjects was 22.41 years, and most of the participants were female students (80%). There were statistically significant differences between the intervention and control groups regarding knowledge (19.17±0.92 vs. 16.03±3.00; P<0.001), self-efficacy (40.84±3.71 vs 33.45±4.83; P = 0.01), attitude (22.56±2.95vs 20.28±3.25; P = 0.01) and performance (27.92±6.00 vs 22.38±5.40; P = 0.01) after the intervention.

Conclusion
According to the findings of this study, the use of educational videos for undergraduate students of public health during the apprenticeship period has a positive effect on the practical learning of vaccination. However, it seems that in non-critical times, online education along with face-to-face education will be more effective for practical training.
Metodologías de la investigación social para la transformación [Reseña]
Authors: Cejas-Martínez Magda-Francisca , Galindo-Arranz Fermín 
Published: January 2023

Con la obra Investigación social en Comunicación: Metodologías cuantitativa, cualitativa y participativa, del doctor en Comunicación e Información Contemporánea, Julio Bravo Mancero, se demuestra el recorrido del aspecto metodológico, como un hecho emergente para la actualidad. Se trata de un riguroso enfoque de las técnicas de toma de información, en el campo, diseña instrumentos originales que son una contribución para el abordaje de los problemas que se encuentran en el entorno y que requieren de una solución. Funda la obra desde la perspectiva de autores clásicos y contemporáneos que, no solo cimentan el trabajo, sino que muestran un camino, inédito hasta ahora, para intervenir la realidad desde lo comunicacional. Por consiguiente, este libro se convierte en una herramienta práctica, de consulta, pero también de acción que pretende motivar trabajos para la academia, y también, para proyectos inter, trans y multidisciplinarios que motiven el desarrollo y la transformación multisectorial.
La moda justa: una invitación a vestir con ética [Reseña]
Authors: Navarro-Gaviño Álvaro 
Published: January 2023

En forma de diagnóstico crítico, la autora Marta D.Riezu, periodista sobre moda y tendencias, acomete reflexiones con una perspectiva comprometida e imaginativa de aspectos relacionados con problemáticas características de la industria textil, como la democratización del estilo de los modelos de consumo veloz, que consiguió devaluar la percepción de la ropa, presentándola como desechable. Así desarrolla apartados específicos sobre un contexto actual en el que la crisis climática, la ideología consumista, los fenómenos de control, la precariedad de las condiciones laborales en la industria de la moda, la explotación humana, animal y medioambiental o el crecimiento de la moda ultrarrápida bajo el calor del big data y las redes sociales son elementos principales de unas realidades medioambientales preocupantes. Y extendiéndose en aspectos originales en torno a éstos, incide en la urgencia de un consumo responsable, a la par que sostenible y una conciencia crítica colectiva sobre nuestras «necesidades».
La hiperconversación, el diálogo aumentado del mundo móvil a través del WhatsApp
Authors: Benítez-Eyzaguirre Lucía , De-Marcos Celia , Acosta-Calderón Lucía 
Published: January 2023

Este artículo presenta una propuesta de definición de la nueva conversación que se registra a través de la aplicación de chat WhatsApp, y transforma la estructura del diálogo clásico. La calificamos de ‘hiperconversación’ y, a partir del análisis propuesto en el marco teórico, le atribuimos las características de accesible, compleja, espontánea, extensible, interactiva y multicódigo. Estas variables surgen del análisis de la experiencia usuaria de 23 personas sobre el uso de la aplicación y los modos de conversación, a través de entrevistas estructuradas. Se ha utilizado una metodología inductiva basada en la Teoría Fundamentada (Strauss y Corbin, 2002: 21-22) para un análisis asistido con el software Atlas.ti hasta obtener por saturación 28 características relacionadas con la temporalidad, la espacialidad, los formatos comunicativos, así como el carácter social y subjetivo del diálogo mediado por la aplicación. Se concluye que la hiperconversación, por cuanto la tecnología facilita otras oportunidades temporales y espaciales, es cotidiana, refuerza las relaciones (Giang, 2019) y contribuye a la creación de comunidad. En su nuevo estilo presenta diferentes formatos y por tanto es multicódigo, es tanto sincrónica como asincrónica, en presencia o en ausencia, enriquecida, infinita y extensible. Es compleja en itinerarios de lectura, en canales, en tiempos y espacios, son conversaciones paralelas y simultáneas e incluso asíncronas, y ocupan toda la experiencia onlife. La nueva cultura de la conversación trata de responder a los significados, turnos de palabra, la duración de los diálogos, la inclusión de personas interlocutoras, al solapamiento de diálogos e incluso al silencio.
ANALISIS PEMBAGIAN MANFAAT DANA BANTUAN OPERASIONAL SEKOLAH (BOS) TAHUN 2018 DI KOTA SEMARANG
Authors: Damanik Dwi Pitari , Hayati Banatul 
Published: January 2023

BOS is a government program that aims to ease the burden on the community on education funding for quality compulsory education. This study aims to determine the distribution of benefits, the amount of average benefits and progress of the BOS subsidies among school groups based on the level of acceptance in Semarang City in 2018. This study uses Benefit Incidence Analysis (BIA) analysis techniques to see the distribution of benefits in the BOS subsidies at each level of education by combining data from the number of BOS subsidy recipients and the amount of BOS funds received at each level of education. The BIA results obtained are then interpreted in the Lorenz Curve (Lorenz Curve) to see the progress of the BOS subsidy policy. The distribution of the benefits of BOS spending for public SD, SMP and SMA is mostly enjoyed by the highest group. The distribution of benefits received by the first quintile of schools (schools with the fewest students) is less than 20% of the total BOS subsidies at each level of education. Inequality mainly occurs at primary school levels because the Lorentz curve moves away from the equalization line. Meanwhile, the education levels for SMP and SMA are relatively more even.
Salp swarm and gray wolf optimizer for improving the efficiency of power supply network in radial distribution systems
Authors: Salman Ihsan , Saffer Khalid Mohammed , Safi Hayder H. , Mostafa Salama A. , Khalaf Bashar Ahmad 
Published: January 2023

Abstract
The efficiency of distribution networks is hugely affected by active and reactive power flows in distribution electric power systems. Currently, distributed generators (DGs) of energy are extensively applied to minimize power loss and improve voltage deviancies on power distribution systems. The best position and volume of DGs produce better power outcomes. This work prepares a new hybrid SSA–GWO metaheuristic optimization algorithm that combines the salp swarm algorithm (SSA) and the gray wolf optimizer (GWO) algorithm. The SSA–GWO algorithm ensures generating the best size and site of one and multi-DGs on the radial distribution network to decrease real power losses (RPL) (kW) on lines and resolve voltage deviancies. Our novel algorithm is executed on IEEE 123-bus radial distribution test systems. The results confirm the success of the suggested hybrid SSA–GWO algorithm compared with implementing the SSA and GWO individually. Through the proposed SSA–GWO algorithm, the study decreases the RPL and improves the voltage profile on distribution networks with multiple DGs units.
Weak measure expansivity of C
2 dynamics
Authors: Ahn Jiweon , Lee Manseob 
Published: January 2023

Abstract
Let

f

f

be a

C

2

{C}^{2}

-diffeomorphism with Axiom A and no cycle condition on a two-dimensional smooth manifold. In this article, we prove that if

f

f

is

C

2

{C}^{2}

-robustly weak measure expansive, then it is

Q

2

{Q}^{2}

-Anosov. Moreover, we expand the results of the

C

2

{C}^{2}

-diffeomorphism case into the

C

2

{C}^{2}

-vector field on a three-dimensional smooth manifold. Let

X

X

be a

C

2

{C}^{2}

-vector field with Axiom A and no cycle condition. We prove that if

X

X

is

C

2

{C}^{2}

-robustly weak measure expansive, then it is

Q

2

{Q}^{2}

-Anosov.
On a class of Harada rings
Authors: Türkmen Burcu Nişancı , Demirci Yılmaz Mehmet 
Published: January 2023

Abstract
In this study, inspired by the definition and a previous study [F. Eryılmaz, SS-lifting modules and rings, Miskolc Math. Notes 22 (2021), no. 2, 655–662], left Harada rings are adapted to ss-Harada rings, and the important properties of these rings are provided. The characterization of a left ss-Harada ring

R

R

with

R

R

left perfect and

Rad

(

R

)

{\rm{Rad}}\left(R)

included in

Soc

(

R

R

)

{\rm{Soc}}\left({}_{R}R)

was found with the help of strongly local

R

R

-modules.
Magnesium-rich intermetallic compounds Gd5Cu5Mg13 and Tb5Cu5Mg13 – intergrowth variants with CsCl and AlB2 related slabs
Authors: Reimann Maximilian Kai , Pöttgen Rainer 
Published: January 2023

Abstract
The magnesium-rich intermetallic compounds Gd5Cu5Mg13 and Tb5Cu5Mg13 were obtained from direct reactions of the elements (induction melting) in sealed tantalum ampoules. Both compounds crystallize with the orthorhombic Y5Cu5Mg13 type structure, space group Cmcm and Z = 4. The polycrystalline samples were characterized by powder X-ray diffraction. The structure of the gadolinium compound was refined from single crystal X-ray diffraction data: a = 414.78(2), b = 1921.87(12), c = 2573.89(16) pm, wR2 = 0.0492, 1611 F
2 values and 77 variables. Refinement of the occupancy parameters revealed a small degree of Gd/Mg mixing for the Gd3 site, leading to the composition Gd4.93(1)Cu5Mg13.07(1) for the studied crystal. The Gd5Cu5Mg13 structure contains slabs of equiatomic GdCuMg, which are embedded in a magnesium matrix. From a geometrical point of view, one can describe the Gd5Cu5Mg13 and Tb5Cu5Mg13 structures as intergrowth variants of distorted W/CsCl and AlB2 related slabs. The most remarkable crystal chemical feature concerns the bcc like magnesium slabs with short Mg–Mg distances ranging from 300 to 342 pm. Temperature dependent magnetic susceptibility measurements show Curie-Weiss paramagnetism for Tb5Cu5Mg13 (10.5(1) μ

B
Tb atom−1 and Θ
P
= −11.6(1) K). Antiferromagnetic ordering was detected below the Néel temperatures of T

N
= 30.5(3) K.
Narrar la paz en clave juvenil
Authors: Carreño Manosalva Clara Inés 
Published: January 2023

Este artículo presenta el análisis de diversas narrativas escritas por jóvenes estudiantes de la Universidad de La Salle con relación a las nociones de posconflicto y paz en el contexto del reciente proceso de negociación entre el Estado colombiano y las (ex)FARC-EP. Su análisis se propone a partir de la comprensión de sus posicionamientos, estéticas, formas de enunciación y horizontes de sentido construidos en experiencias de participación política en torno a la paz. Sus discusiones vindican la organización social y la participación juvenil como escenarios centrales en la formación de sujetos políticos, en tanto que posibilitan competencias en el ejercicio activo de la ciudadanía tales como el diálogo de saberes, la democratización de la información y el conocimiento, y la construcción de sentido y la reflexión crítica, necesarias ellas para la construcción de la paz en Colombia.
El mundo totea: aprendizajes de la vida de los ruidos en San Bernardo, Cundinamarca
Authors: Rodríguez Suárez Ana María 
Published: January 2023

Los campesinos de San Bernardo, Cundinamarca, tienen la certeza de que el mundo vive “totiando”. Este artículo desarrolla la noción de “totiar” como una teoría atenta a los sonidos que ocupan lugar en la vida de mis amigos y maestros. Las reflexiones que aquí se presentan son producto de mi trabajo como jornalera durante el primer semestre de 2019 y parte de 2020. Trabajando en los cultivos de la vereda Agua Negra aprendí que “totiar” es un concepto que explica diferentes dimensiones sonoras y materiales de la vida campesina. Este artículo argumenta por diferentes recorridos sonoros que los sonidos no son un telón de fondo y que para llevar la vida es necesario poner atención a los ruidos.
The method of spectral analysis of the determination of random digital signals
Authors: Laptiev Oleksandr , Tkachev Volodymyr , Maystrov Oleksii , Krasikov Oleksandr , Open’ko Pavlo , Khoroshko Volodimir , Parkhuts Lubomir 
Published: January 2023

The methods of spectral analysis based on the use of any model to describe the signal are considered in the article, while using them some assumptions about the behavior of the signal outside the observation interval are made. The task of spectral analysis or evaluation, in this case, is to find the parameters of the model used, which is selected based on the available a priori information about the studied process.A new spectral analysis method is proposed, which uses the partially classical Prony method, and this method has been improved by replacing the damping sine wave with the use of damped sine wave.Replacing damped sine wave with the use of non-damped sine wave, allows you to very accurately isolate the signal and determine its characteristics against the background of very rich in interference with air space, against the background of radio devices that work legally. For the first time, a fast conversion algorithm was applied to solve the normal equations for finding variables to sequentially determine the parameters of random short-term signals such as amplitude, frequency, and phase. It is suggested to determine not only static parameters but also the rate of change of these parameters. Speed of change of parameters allows determining more carefully the signal of the means of silent receiving of information.Modeling of processes of determination of random short-term pulses simulating digital signals of the means of silent receiving of information is carried out, on the basis of the proposed method of spectral analysis, the simulation results are presented in the form of three-dimensional graphs.The main difference is the use not only of the analysis of the amplitude, frequency, phase, and spectrum of the signal but the main analysis of the spectral density of the signal.Analyzes of the simulation result fully confirm the advantages of the proposed method for the determination of random short-term pulses.