bluuebunny/crossref_metadata_2025 huggingface dataset:
Trial Factors Associated With Completion of Clinical Trials Evaluating AI: Retrospective Case-Control Study
Authors: Chen David , Cao Christian , Kloosterman Robert , Parsa Rod , Raman Srinivas
Published: September 2024

Background

Evaluation of artificial intelligence (AI) tools in clinical trials remains the gold standard for translation into clinical settings. However, design factors associated with successful trial completion and the common reasons for trial failure are unknown.

Objective

This study aims to compare trial design factors of complete and incomplete clinical trials testing AI tools. We conducted a case-control study of complete (n=485) and incomplete (n=51) clinical trials that evaluated AI as an intervention of ClinicalTrials.gov.

Methods

Trial design factors, including area of clinical application, intended use population, and intended role of AI, were extracted. Trials that did not evaluate AI as an intervention and active trials were excluded. The assessed trial design factors related to AI interventions included the domain of clinical application related to organ systems; intended use population for patients or health care providers; and the role of AI for different applications in patient-facing clinical workflows, such as diagnosis, screening, and treatment. In addition, we also assessed general trial design factors including study type, allocation, intervention model, masking, age, sex, funder, continent, length of time, sample size, number of enrollment sites, and study start year. The main outcome was the completion of the clinical trial. Odds ratio (OR) and 95% CI values were calculated for all trial design factors using propensity-matched, multivariable logistic regression.

Results

We queried ClinicalTrials.gov on December 23, 2023, using AI keywords to identify complete and incomplete trials testing AI technologies as a primary intervention, yielding 485 complete and 51 incomplete trials for inclusion in this study. Our nested propensity-matched, case-control results suggest that trials conducted in Europe were significantly associated with trial completion when compared with North American trials (OR 2.85, 95% CI 1.14-7.10; P=.03), and the trial sample size was positively associated with trial completion (OR 1.00, 95% CI 1.00-1.00; P=.02).

Conclusions

Our case-control study is one of the first to identify trial design factors associated with completion of AI trials and catalog study-reported reasons for AI trial failure. We observed that trial design factors positively associated with trial completion include trials conducted in Europe and sample size. Given the promising clinical use of AI tools in health care, our results suggest that future translational research should prioritize addressing the design factors of AI clinical trials associated with trial incompletion and common reasons for study failure.
Population Characteristics in Justice Health Research Based on PubMed Abstracts From 1963 to 2023: Text Mining Study
Authors: Lukmanjaya Wilson , Butler Tony , Taflan Patricia , Simpson Paul , Ginnivan Natasha , Buchan Iain , Nenadic Goran , Karystianis George
Published: September 2024

Background

The field of epidemiological criminology (or justice health research) has emerged in the past decade, studying the intersection between the public health and justice systems. To ensure research efforts are focused and equitable, it is important to reflect on the outputs in this area and address knowledge gaps.

Objective

This study aimed to examine the characteristics of populations researched in a large sample of published outputs and identify research gaps and biases.

Methods

A rule-based, text mining method was applied to 34,481 PubMed abstracts published from 1963 to 2023 to identify 4 population characteristics (sex, age, offender type, and nationality).

Results

We evaluated our method in a random sample of 100 PubMed abstracts. Microprecision was 94.3%, with microrecall at 85.9% and micro–F1-score at 89.9% across the 4 characteristics. Half (n=17,039, 49.4%) of the 34,481 abstracts did not have any characteristic mentions and only 1.3% (n=443) reported sex, age, offender type, and nationality. From the 5170 (14.9%) abstracts that reported age, 3581 (69.3%) mentioned young people (younger than 18 years) and 3037 (58.7%) mentioned adults. Since 1990, studies reporting female-only populations increased, and in 2023, these accounted for almost half (105/216, 48.6%) of the research outputs, as opposed to 33.3% (72/216) for male-only populations. Nordic countries (Sweden, Norway, Finland, and Denmark) had the highest number of abstracts proportional to their incarcerated populations. Offenders with mental illness were the most common group of interest (840/4814, 17.4%), with an increase from 1990 onward.

Conclusions

Research reporting on female populations increased, surpassing that involving male individuals, despite female individuals representing 5% of the incarcerated population; this suggests that male prisoners are underresearched. Although calls have been made for the justice health area to focus more on young people, our results showed that among the abstracts reporting age, most mentioned a population aged <18 years, reflecting a rise of youth involvement in the youth justice system. Those convicted of sex offenses and crimes relating to children were not as researched as the existing literature suggests, with a focus instead on populations with mental illness, whose rates rose steadily in the last 30 years. After adjusting for the size of the incarcerated population, Nordic countries have conducted proportionately the most research. Our findings highlight that despite the presence of several research reporting guidelines, justice health abstracts still do not adequately describe the investigated populations. Our study offers new insights in the field of justice health with implications for promoting diversity in the selection of research participants.
A Quick Review of Infrared Thermography Studies on Children and Adolescents' Mental Health (Preprint)
Authors: Zhao Jing , Hong Xu , Zhang Xinran , Ma Yiming , Zhang Ziying , Huo Siyu , Sun Yudi , Li Ying
Published: September 2024

BACKGROUND

Infrared Thermography (IRT) is valuable for monitoring surface temperature distributions, with proven benefits in assessing physiological states. However, most research focuses on adults, neglecting its potential for evaluating children and adolescents, whose mental health significantly impacts learning and social adaptation.

OBJECTIVE

This study aims to review the applications of IRT in different psychological health fields and identify gaps in its clinical diagnostic standards for pediatric psychological assessment.

METHODS

A rapid review approach is employed to search for literature on the applications of IRT in emotional disorders, Autistic Spectrum Disorder (ASD), Post-traumatic stress disorder (PTSD), stress, and cognitive load from PubMed, ScienceDirect, Google Scholar and PLOS ONE. The included articles were subjected to manual screening and qualitative analysis.

RESULTS

After screening 2395 citations and excluding low-quality ones, 27 out of 50 reviewed articles were included. For children, IRT can capture facial temperature changes caused by autonomic nervous system responses to emotional disorders. In ASD, IRT can detect temperature changes related to emotional and cognitive states, enhancing diagnosis and insights into sensory processing and emotional regulation. Additionally, IRT can capture the emotional, stress, and psychological responses of PTSD patients. For cognitive load, relying solely on self-reporting frequently lacks objectivity, while IRT offers a non-invasive, real-time method across various scenarios.

CONCLUSIONS

IRT has revealed correlations between physiological reactions and changes in body temperature detectable by thermal imaging, leading to methods integrating IRT with biometric measurement techniques and creating datasets for assessing individual conditions. This advancement supports evaluating psychological health in children and adolescents.
A Comparative Study of Black Humor as Seen in Catch-22 and A Good Man Is Hard to Find
Authors: Hang Li
Published: September 2024

The purpose of this thesis is to find the similarities and differences between Catch-22 and A Good Man Is Hard to Find in the direction of literary genre in black humor. Based on works in both Chinese and English and a lot of literary criticism, the systematical research will be done in aspects of art style, language, the writing technique, major character and theme to obtain a more profound understanding of these two novels. According the research, the thesis gets conclusions as following: Catch-22 and A Good Man Is Hard to Find are both tragedies, but because of the implicit and calm expression of the two authors, both the two works have the effect of comedy. The former subverts the traditional narrative mode by describing absurd plots in a spider web structure, and portrays a alienated major character - Yossarian, who wants to escape from combat, while the latter uses the traditional linear mode to depict a hypocritical character - Grandma. The two characters are both anti-heroes. Nevertheless, Catch-22 mostly uses repetition and symbolism to reveal the cruelty of reality and wars and show human alienation, while A Good Man Is Hard to Find tends to use the metaphor to express the theme of original sin, violence and redemption.
The energy operator on a generalized Kato class
Authors: https://orcid.org/0000-0003-1113-5827 René Erlín Castillo , Leiva Hugo
Published: September 2024

In this paper we introduce and study the classes of signed Borel measure Mp(Rn)as well as $\widetilde{\mathcal{M}}_p(Rn) (1 < p < n) which are generalization of the Kato class. For these classes we obtain an upper estimate for the energy operator
Notes on multiplicative generalized (σ, τ )-reverse derivations with Lie ideals of semiprime ∗-rings
Authors: Atteya Mehsin Jabel
Published: September 2024

This article is devoted to investigation into the notion of multiplicative generalized(σ,τ)-reverse derivations associated with(σ,τ)-reverse derivations of semiprime∗-rings is characterized. The action of these derivations on∗-Lie ideals of semiprime∗-rings is also consideration. Moreover, the commutativity of semiprime∗-rings admitting multiplicative generalized(σ,τ)-reverse derivations associated with(σ,τ)-reverse derivations satisfying certain algebraic identitieson∗-Lie ideals is explored.
Rainbow Mean Index of Some Classes of Graphs
Authors: K. Maheswari , Ganapathy Rajasekaran
Published: September 2024

In this article, we determine the rainbow mean index of cartesianproductG◻Pn, where G is a regular graph;Pm◻Pn; Wn◻K2;total graph of paths; chain of cycles and complete graphs; triangular treeand join graphs tCs∨K1.
Outdegree equitable domination number of certain graph operators
Authors: T. R. Thasneem , Menon Manju K.
Published: September 2024

For a vertex u in the dominating set D of a graph G, the number of edges from u to V-D is called the outdegree of u with respect to D, d°D, G(u). A dominating set D is called the outdegree equitable dominating set if the absolute value of the differences of outdegrees of any two vertices in D is at most one. The minimum cardinality of an outdegree equitable dominating set of G is called the outdegree equitable domination number of G, γoe(G). In this paper, we study the outdegree equitable domination number of certain graph operators such as complement, double graph, mycielskian and subdivision of graph.
Existence of mild solutions for non-instantaneous impulsive ξ-Caputo fractional integro-differential equations
Authors: Benhadda Walid , Elomari M’hamed , El mfadel Ali , Kassid Abderrazak
Published: September 2024

The aim of this paper is to investigate the existence of mild solutions for a nonlocal ξ-Caputo fractional non-instantaneous impulses semilinear integro-differential equation in a Banach space. The proofs are based on some fixed point theorems for condensing maps. As an application, an example is given to illustrate our theoretical results.
De la totalidad al Antropoceno en Latitud de la flor y el granizo de Mario Payeras
Authors: Méndez Rojas Diana Alejandra
Published: September 2024

este artículo analiza el ensayo Latitud de la flor y el granizo publicado en 1988 por Mario Payeras, guatemalteco comprometido con la transformación social de su nación que, entre 1972 y 1984, formó parte del Ejército Guerrillero de los Pobres (egp). Recurriendo a la versión marxista de los conceptos de totalidad y antropoceno se propone que esa obra sintetiza un planteamiento de crítica ecológica a la civilización occidental, producto de la formación filosófica que Payeras recibió a partir de múltiples viajes internacionales a lo largo de la década de los sesenta, así como de su particular uso de la filosofía para analizar la realidad guatemalteca.Palabras clave: Marxismo; Civilización; Crítica ecológica; Conflicto armado
Exploring FEA Techniques for Bending Rectangular Glass Plates into Parabolic Shapes
Authors: Ulhe Dr. Prashant N.
Published: September 2024

Abstract: A structural Finite Element Analysis (FEA) was conducted, incorporating both linear and nonlinear analysis. The investigation considered geometric nonlinearity, material nonlinearity, and boundary nonlinearity, also known as contact analysis. All boundary conditions, loadings, and material properties used in the analysis were based on real-world conditions. Experimental validations were performed to confirm the accuracy of the FEA results, providing strong confidence in the investigation's findings.
Board Characteristics and Tax Avoidance: The Mediating Role of Integrated Reporting Quality
Authors: Dwi ramadhan Sandicha , Saputra Dian , Nawas Abrar , Abdul Rahman Firdaus
Published: September 2024

This study examines the nexus between female directors, independent commissioners, board size, political connections, and Corporate Tax Avoidance (CTA) within the non-cyclical consumer goods sector of the Indonesian Stock Exchange (IDX) from 2019 to 2022. The research also tests the mediating influence of Integrated Reporting Quality (IR), addressing the significance of Integrated Reporting in Indonesia. Using SmartPLS 3 and PLS-SEM, the findings reveal that female directors are negatively associated with Tax Avoidance, while board size has a positive effect, and independent commissioners and political connections show insignificant impacts. The mediating role of IR Quality indicates that improved reporting quality reduces tax avoidance in relation to board characteristics and political connections. The study underscores the importance of IR quality in enhancing corporate transparency and reducing fraudulent activities, advocating for the adoption of Integrated Reporting frameworks by both government bodies and companies.
Phytochemical screening and Antioxidant Potential of Alstonia scholaris Linn leaf Extracts
Authors: Bopche Atul , Rathi Jagdish , Ghoshi Sikil , Rajpoot Sonu , Noriya Shivraj , Shah Sikesh Kumar , Raj Shubham
Published: September 2024

Medicinal plants play important roles in our daily life to treat many diseases and ailments. Research in medicinal plants reflects the recognition of the validity of many herbal products. Alstonia scholaris (L.) R. Br. (A. scholaris, Apocynaceae) commonly called as Indian devil tree has been used as folklore medicines, possesses different pharmacological activities and potentially used as antimalarial drug.  In alternative medicinal systems it is effective against different ailments such as asthma, malaria, fever, dysentery, diarrhoea, epilepsy, skin diseases and snakebite. The aim of the present study was to evaluate in vitro antioxidant activities, qualitative and quantitative phytochemical analysis of leaves of A. scholaris collected from Bhopal region of Madhya Pradesh. Qualitative analysis of various phytochemical constituents and quantitative analysis of total phenol and flavonoids were determined by the well-known test protocol available in the literature. The in vitro antioxidant activity of methanolic extract of the leaves was assessed against DPPH radical scavenging assay methods using standard protocols. Phytochemical analysis revealed the presence of phenols, diterpines, flavonoids, proteins, carbohydrates and saponins. The total phenol and flavonoids content of methanolic leaves extract of A. scholaris was found to be 0.876, 0.757mg/100mg respectively. The activities of methanolic extracts against DPPH assay method were concentration dependent. The diverse array of phytochemicals present in the plant thus suggests its therapeutic potentials which may be explored in drug manufacturing industry as well as in traditional medicine.
Keywords: A. scholaris L, Apocynaceae, Antioxidant activity, DPPH assay method.
Experimental and numerical study on mounting force and withdrawal strength of self-threaded dowels in particleboard
Authors: Kuskun Tolga
Published: September 2024

Traditional and alternative joining techniques have been used for many years at the connection points of structural bearing systems. Especially, glued doweled and screwed type mechanical connections are widely used in wooden structures and furniture constructions. Although there are many studies related to the strength of dowel and screw joints, limited papers describe the practical use of self-threaded dowels (STDs) in the joints. In this study, thread geometry effect of the STDs in particleboard (PB) was investigated by determining the mounting force and withdrawal strength values. For this purpose, STDs including three different thread width (0,2 - 0,3 - 0,4 mm) and two different thread length (1 - 2 mm) were designed, produced and tested under static compressive and tensile forces. All STDs were produced with polylactic acid (PLA) by using Layer Plastic Deposition (LPD) method in 3D printing technology. Uniaxial compression tests were performed in order to determine the minimum mounting force while the tension tests were performed for determining the maximum withdrawal force required to put the STDs into the hole and pull out them, respectively. Numerical analysis (FEM) were used to analyze the contact pressures and stresses of the STD joints. Abaqus v6.13-1 software was utilized for the numerical analyses. In addition, multiple regression analysis was carried out to predict the mounting force and withdrawal strength of the STDs. Results showed that the predictive expressions developed provided reasonable estimates for mounting force and withdrawal strength of STDs. According to the statistical analyses; thread width, thread length and their interaction have significantly affected both mounting force and withdrawal strength of STDs. At the end of the experimental and numerical tests, STDs with 0,2 mm width and 2 mm length threads gave the lowest mounting force values, stresses and contact forces. However, the highest withdrawal strength values were obtained from the STDs with 0,3 mm width and 1 mm length threads. According to the results of the study, the optimum STD was the one with 0,3 mm thread width and 2 mm thread length. In conclusion, the STDs can be utilized as an alternative fastener to the conventional glued dowel type joints in PB. However, corner joints constructed of different kinds of wood-based composites and connected with the STDs should be investigated in the future studies.
Uncivil communication and epistemic trustworthiness concerns in public online discussions in response to scientists during the Covid-19 pandemic
Authors: Peters Nicola
Published: September 2024

The Covid-19 pandemic illustrated important developments in science communication, with direct online interactions between scientists and the public. This study performs a content analysis of tweets (“N” = 6,000) directed at German virologists (“N” = 6) during the pandemic’s first year. It identifies substantial levels of incivility and trustworthiness concerns, which often co-occurred. These findings enhance our understanding of online communication dynamics in crises by showing how incivility and trustworthiness concerns are not only prevalent but also evolve in response to specific events and phases. This analysis provides insight into the complexities of public sentiment toward scientists during the pandemic.
O ensino de história local: caminhos múltiplos
Authors: Petruski Maura Regina , Moreno Jean Carlos , Stancik Marco Antonio , Ferreira Angela Ribeiro
Published: September 2024

Os textos que compõem a coletânea Ensino de História Local: caminhos múltiplos, são resultado de dissertações defendidas no Mestrado Profissional em Ensino de História – ProfHistória da Universidade Estadual de Ponta Grossa-PR, os organizadores do livro são os orientadores das pesquisas apresentadas. São pesquisas que se debruçaram sobre temas de História Local e as possibilidades de ensino na sala de aula de História. Elaine Aparecida Mayer analisou um livro de História de Ponta Grossa para crianças, “A princesa das Crianças”. Nelci Aparecida Ruth pesquisou sobre a experiência da criação de capsulas do tempo em Ponta Grossa e como pode ser utilizado para ensinar História Local. George Ramom Dimbarre propôs o ensino de História Local a partir do jogo eletrônico MineCraft. Mariane de Melo Bueno pesquisou sobre a vida e o trabalho dos mineiros da Mina de Carvão em Figueira-PR e propôs uma sequência didática para o trabalho com a história da atividade de mineração e os impactos na cidade e na vida dessas pessoas. Adilson Carlos de Lima pesquisou, através de fotografia, sobre a vida dos trabalhadores das plantações de café em Tejupá-SP. Maristela Sant’Ana de Oliveira analisou os álbuns de fotografias de Ponta Grossa do início do século XX e uma coluna de crônicas do jornal local para discutir as representações da cidade. E Alexandre Mazetto Vieira apresenta reflexões sobre o ensino de História indígena no interior de São Paulo. São temas que não estão nos livros didáticos, mas que são fundamentais para a compreensão da organização social do Local, desde uma História que inventa tradições como a princesa das crianças e a capsula do tempo, até sujeitos que ficam de fora da história oficial das cidades, como os trabalhadores do café, das minas, os indígenas. Agradecemos os autores, Mestres em Ensino de História.
Heat Mapping and Plastic Strain Radius Modeling of Dual-Tool Friction Stir Welds 6061 Aluminum Alloy Plate Using FEM
Authors: Youlia Rikko Putra , Utami Diah , Romahadi Dedik , Yishuang Tang
Published: September 2024

This study investigates the effects of Dual-Tool Friction Stir Welding (DT-FSW) parameters on the weld quality of 8 mm thick 6061 aluminum alloy plates, specifically focusing on the elimination or minimization of the "pass-overlap zone" that’s a gap typically observed at the mid-section of the weld cross-section resembling characteristics of the Heat-Affected Zone (HAZ). To address ongoing debates regarding the optimal joint performance concerning this overlap, symmetric increases in the dimensions of both FSW tools were implemented to analyze resultant temperature fields and plastic strain adaptations at the weld interfaces. Simulation visualizations were conducted with tool density variations at intervals of 0.2 mm and 0.4 mm. Results indicate that increasing tool density, thereby reducing the distance between tool surfaces, leads to a decrease in peak temperatures generated during welding. This reduction in temperature correlates with a more uniform distribution of plastic strain rates across all layers of the material—upper, middle, and lower—with the leading edge exhibiting the most significant improvement in strain uniformity. Conversely, during the stabilization phase, a decrease in tool density (S) results in a reduction of the maximum equivalent plastic strain rate. These findings suggest that careful adjustment of tool density in DT-FSW processes can enhance weld quality by promoting more uniform mechanical and thermal properties across the joint.
Intelectuales cubanos después de la caída del muro
Authors: Geoffray Marie Laure
Published: September 2024

Este artículo propone un análisis de los modos informales de acción de un colectivo de intelectuales cubanos que intentan, sin confrontar directamente el orden político revolucionario, contribuir al cambio social en la isla después de la caída del Muro. Muestra que estos modos de acción son estratégicamente parte del campo cultural, en el que la protesta es menos reprimida que en otros lugares, especialmente desde el nombramiento de Abel Prieto como titular del Ministerio de Cultura.
Paquete digital as media format for cultural consumption in Cuba
Authors: Soares Thiago , Pereira Simone Luci
Published: September 2024

The article discusses the media consumption related to pop music among young Cubans based on ethnographic-inspired field research, conducted between 2017 and 2019 in Havana, which questions the dictates of youth studies in Latin America. Highlights the legitimization of a particular format of media, the paquete digital (“digital package”: a set of downloaded and shared files) that focuses on the debate over Internet access in Cuba, political and ideological disputes regarding the economic embargo imposed on the country and the Cuban State’s attempts to dialogue with youth. The relevance of the study lies in debating cosmopolitanism and cultural consumption in a particular economic and political context, postulating a different way of constructing ideals of modernity.
Desarrollo local y sus medios de socialización en Cuba
Authors: Paz Enrique Luis Ernesto
Published: September 2024

La publicación en revistas se ha constituido en una necesidad y una práctica legitimadora de investigadores, paradigmas y posiciones ideológicas. El desarrollo local y su producción científica cobran vital importancia dentro de los procesos de socialización, en los que el modelo a seguir son las revistas de corriente principal. Este aspecto pone en desventaja a las revistas nacionales en América Latina y el Caribe, donde Cuba se inserta con un paradigma de desarrollo particular. Se planteó como objetivo caracterizar las revistas especializadas en desarrollo local en Cuba, destacando sus principales características. El método principal empleado fue el bibliométrico que favoreció la reflexión sobre el estado y posicionamiento de las revistas cubanas sobre el desarrollo local.
Efficacy and safety of volar locking plate versus cast immobilization for distal radius fractures: a systematic review and meta-analysis of randomized controlled trials
Authors: Li Faxiang , Tan Yuzhong , Cui Liuchao , Tian Lin
Published: September 2024

Volar locking plates (VLPs) are increasingly used for distal radius fractures (DRFs), yet their efficacy compared to cast immobilization remains debated. This meta-analysis aimed to compare VLPs versus cast immobilization for DRFs across various follow-up durations. Randomized controlled trials reporting patient-reported functional scores, wrist range of motion (ROM), radiological assessments, and complications were included. Meta-analysis was performed for 6-week, 3-month, 6-month, 12-month, and >12-month follow-ups. Subgroup analysis stratified studies by age group, ≥ 60 years and < 60 years. VLPs showed significantly lower Disabilities of the Arm, Shoulder, and Hand (DASH) scores at 6 weeks (p < 0.001), 3 months (p < 0.001), 12 months (p = 0.012), and > 12 months (p < 0.001), and lower PRWE scores at 6 weeks (p < 0.001), 3 months (p = 0.048), and >12 months (p = 0.032). Wrist ROM favored VLPs at 6 weeks (p < 0.05), with higher flexion and supination at 3 months (p = 0.027) and 12 months (p = 0.003). Radiologically, VLPs showed improved parameters at 3- and 12-month follow-up. Overall complications did not significantly differ. Subgroup analysis in patients < 60 years generally supported these findings, while in patients ≥ 60 years, radiological outcomes aligned, yet only lower DASH scores were observed with VLPs at 3 months (p < 0.001). VLPs may offer superior clinical, functional, and radiological outcomes compared to cast immobilization at 3- and 12-month follow-up for patients < 60 years, with comparable safety profiles. For patients ≥ 60 years, VLPs may yield better radiological outcomes at 3- and 12-month follow-up, though clinical benefits remain uncertain.
Process simulation and optimization of process parameters of single-pulse femtosecond laser processing Invar 36 alloy
Authors: Lu Xiaohong , Jiang Chao , Wang Zhenda , Li Xiangchun , Wang Xinxin , Liang Steven Y.
Published: September 2024

Invar 36 alloy has an extremely low coefficient of thermal expansion and is suitable for preparing a fine metal mask (FMM) for the evaporation of silicon-based organic light emitting display microdisplays. The higher the resolution and the greater the number of pixels, the finer and more delicate the holes required. Femtosecond laser processing technology is an effective technical means for processing Invar 36 alloy FMM due to its characteristics of extremely short pulse width, extremely high pulse energy density, smaller heat-affected zone, and more regular machining edges. The femtosecond laser processing parameters directly affect temperature distribution and then affect the manufacturing quality and efficiency of Invar 36 alloy FMM. At present, femtosecond laser processing of Invar 36 alloy FMM is still in the exploration stage, and the processing mechanism and technology are not clear. In this paper, a simulation model of single-pulse femtosecond laser processing Invar 36 alloy is established based on the two-temperature equation. By comparing the ablation morphology of the simulation output with the experimental measurement results, the validity of the simulation model is verified and the processing mechanism is preliminarily explored. Based on the simulation model, the effects of femtosecond laser energy density, pulse duration, and spot diameter on the electron temperature field, lattice temperature field, and ablation morphology of the craters are explored. The process window of laser processing parameters is determined. A full-factor test is conducted. Take the minimum length of the heat-affected zone, the maximum depth of the ablation crater, and the minimum diameter of the ablation crater as three optimization objectives and obtain Pareto optimal solutions based on genetic algorithm. The optimization of single-pulse femtosecond laser drilling Invar 36 alloy is realized.
Welding electrical connections between battery sheet metal materials and additively manufactured (AM) aluminum components: The effect of surface roughness
Authors: Piiroinen Aki , Karlsson Jussi , Karhu Miikka , Pekkarinen Joonas , Salminen Antti
Published: September 2024

The integration of additive manufacturing's design versatility with a push for electrification can lead to unique innovations. In this context, when discussing welded joints, their quality and reliability play a significant role. The restricting factor for the use of laser powder bed fusion of metal (PBF-LB/M) additive manufactured (AM) parts is often their surface quality in the as-built state. In addition, the surface quality changes when part plane orientation changes. In this study, AlSi10Mg aluminum test samples were additive manufactured in seven different build angles. The AM samples were glass bead blasted after manufacturing, and the surface roughness of the joint surface area was optically measured. After the measurement, the AM samples were welded to nickel-plated copper and aluminum sheet metals. A continuous wave single-mode fiber laser with scanner optics was used to carry out the welding experiments in lap joint configuration. The structural and mechanical properties of the welds were evaluated by the macroscopic images of weld cross sections and tensile testing of the samples. The electric resistivity of the samples was also tested. Based on the measurement results of the samples, the impact of surface quality was discussed. The results indicated that there was no clear effect of building angle on the final weld quality. The worst surface quality in the joint area was on the test pieces in which the joint surface was facing down toward the build plate.
Preparation of Magnetic Chitosan-Based MOFs (FCM) for Antimony Removal
Authors: Qian Yanda , Zhan Hao , Wang Xiaoxue , Xu Shengjiao , Wu Zhengchuan
Published: September 2024

The rapid development of industry has led to heavy metal pollution becoming a significant environmental concern, with particular attention being focused on antimony pollution. China, as one of the world’s largest producers of antimony, faces potential threats to ecosystems and human health from this type of pollution. To address this issue, an innovative method for preparing new green functional materials was proposed in this study. An efficient and economical composite material (FCM) was developed, based on non-toxic chitosan loaded with the metal-organic framework (MOFs) and magnetic nano ferrosolferric oxide. This material was then used to adsorb Sb (III) in water environments. The effects of the mass ratio of chitosan to metal-organic frameworks (MOFs) denoted as MIL-100(Fe), ferrosolferric oxide nanoparticles (Nano-Fe3 O4 ) to chitosan, reaction temperature, reaction time, and initiator concentration on the removal rate of Sb (III) were investigated. The results indicated that a mass ratio of 1:2:2 for Fe3 O4 , chitosan, and MOFs, an initiator concentration of 1.25 mmoL·L-1, a reaction time of 90min, and a water bath temperature of 60℃ resulted in a removal rate of Sb (III) from FCM reaching 96.8%. Characterization analysis revealed the rough and uneven surface of FCM, with numerous aggregated irregular particles and porous crystalline structures. In conclusion, FCM demonstrates effective removal of heavy metal antimony from water while exhibiting high environmental compatibility and sustainability.
Effect of Dietary Energy Level on Some Reproductive Characteristics of Clarias jaensis Female (Boulenger, 1909), an Endogenous Species from Cameroon
Authors: Kuete Suzy Gwladys Tsoupou , TCG Tchouante , TA Nana , SA Kpoumie , AP Tonfack , NR Komguep , BL Songmo , ET Efole , AK Etchu , V Pouomogne
Published: September 2024

To determine the level of food energy necessary for a good sexual maturation of Clarias jaensis females in captivity, 180 post fingerlings with average weight of 96 ± 7g were submitted in triplicates to four experimental isoproteic (40 % crude protein) diet with 3000, 3100, 3200 and 3300 Kcal/kg of energy. The study took place at the Application and Research Farm of the University of Dschang for 4 months. At the end of the test, 12 females presenting the sexual maturity characteristics (bloated belly containing mature oocytes) from each group were sacrificed. The results showed that FSH (0.81 ± 0.35 mlU/ml) and LH (0.66 ± 0.23 mlU/ml) were higher at 3100 Kcal/kg while the higher concentration of estradiol (450,00 ± 109,86 pg/ml), the higher weight of ovaries (31,88 ± 6,86g) and the higher rate of mature female (75%) were recorded with 3000 Kcal/kg. Other reproductive characteristics such as ovarian biochemical characteristics, GSI, HSI and oocyte characteristics were also better with lower energy diets. In conclusion, females with the best reproductive characteristics were obtained with low energy rations.
Assessment of Population Growth and Fishing Vulnerability of Pomadasys stridens along the Syrian Coast (Eastern Mediterranean Sea)
Authors: Hamwi Nader Iskandar , AB Nour , A Hamam , S Jullanar
Published: September 2024

Between January 2023 and March 2024, 647 distinct Pomadasys stridens specimens were captured in the coastal waters of Syria in the eastern Mediterranean Sea. Advanced analysis techniques, such as artificial neural networks and fuzzy logic, were applied to these samples. During the study, the largest captured individual was 19.17 cm long and was estimated to be 8 years. By applying the von Bertalanffy growth equation to the total length data, had derived the formula TLt = 21.53 (1-e-0.23 (t + 1.29)), which indicates positive allometric growth (b = 3.08). The growth performance index (Φ’) was calculated as 2.03, providing a measure of growth efficiency. The study also estimated various mortality coefficients for Pomadasys stridens. The coefficients were as follows: Z = 0.92 y-1 (total mortality rate), F = 0.23 y-1 (fishing mortality rate), M = 0.69 y-1 (natural mortality rate), and E = 0.25 y-1 (exploitation rate). The survival coefficient (S) was determined to be 0.40 y-1. Analysis of the population growth (FP) of Pomadasys stridens from the Syrian coast, a value of 34, indicated a moderate growth rate within the local marine environment. However, the study also found that fisheries were exploited at a fishing vulnerability of 50.9. The population dynamics of Pomadasys stridens in Syrian seawater can be gleaned from the findings of this study. The sustainable management of this species requires the implementation of conservation measures, according to them. In addition, the results enrich our knowledge of Pomadasys stridens’ growth, mortality, and vulnerability to fishing, creating the basis for future research and management strategies.
Strategi Musyrif Dalam Membentuk Karakter Kepemimpinan dan Kemandirian Siswa Boarding School (Studi Kasus di SMA Insan Cendekia Mandiri Boarding School, Sidoarjo)
Authors: Basyar Muhammad Khairul
Published: September 2024

Tujuan daripada penelitian ini adalah untuk mendeskripsikan bagaimana strategi Musyrif dalam membentuk karakter kepemimpinan dan kemandirian siswa Boarding School. Penelitian ini mengambil studi kasus di SMA Insan Cendekia Mandiri Boarding School (ICMBS), Sidoarjo.  Metode yang digunakan dalam penelitian ini adalah penelitian kualitatif. Data diperoleh melalui observasi, dokumentasi dan in-depth interview dengan key informant: Supervisor Asrama SMA ICMBS, Musyrif, siswa, dan Alumni. Adapun teknik analisis data yang digunakan adalah teknik analisis deskriptif. Berdasarkan hasil penelitian dapat dikonklusikan: (1) Strategi Musyrif dalam membentuk karakter kepemimpinan dan kemandirian terbagi dua yaitu internal dan eksternal. (2) Strategi internal meliputi enam tahapan yaitu: perencanaan, pengenalan, pelaksanaan, pengawasan, reward and punishment, dan evaluasi. Perencanaan diintegrasikan melalui organizing divisi kepengurusan asrama. Pengenalan diintegrasikan melalui pembelajaran diniyah, Taujihat Wal Irsyadat, pendidikan keorganisasian, dan keteladanan. Pelaksanaan di integrasikan melalui kegiatan Organisasi Asrama Santri, multi activities, dan kedisiplinan. Pengawasan diimplementasikan oleh seluruh komponen lembaga pedidikan. Reward and punishment diintegrasikan sesuai prinsip dan ketetapan yang berlaku. Evaluasi diintegrasikan melalui rapat Musyrif, Musyrif dengan siswa, dan ujian diniyah. (3) Strategi eksternal meliputi pengenalan, pengawasan, dan evaluasi yang diintegrasikan melalui komunikasi aktif dengan orang tua wali baik dalam bentuk formal maupun nonformal.
Implementasi Tugas Kepala Sekolah sebagai Manajer untuk Pengembangan Karier Guru di Sekolah Menengah Atas Negeri 1 Minas Kabupaten Siak
Authors: Rahmayoni Inayah
Published: September 2024

AbstrakTujuan dari penelitian ini untuk mengatahui: Implementasi tugas kepala sekolah sebagai manajer untuk pengembangan karier guru serta faktor pendukung dan penghambat implementasi tugas kepala sekolah sebagai manajer untuk pengembangan karier guru di SMA Negeri 1 Minas Kabupaten Siak. Jenis penelitian ini yaitu penelitian deskriptif kualitatif, subyek dari penelitian ini adalah kepala sekolah dan tenaga pendidik dan kependidikan sedangkan objeknya adalah implementasi tugas kepala sekolah sebagai manajer untuk pengembangan karier guru di SMA Negeri 1 Minas. Data penelitian ini diperoleh menggunakan teknik observasi, dokumentasi dan wawancara. Teknik Analisis data yang digunakan dalam penelitian ini yaitu Data Collection, Data Reduction, Data Display dan Conclusion Drawing. Adapun jumlah informan dalam penelitian ini adalah 4 orang diantaranya yaitu kepala sekolah, 2 tenaga pendidik dan 1 tenaga kependidikan KTU. Hasil penelitian yang penulis lakukan adalah kepala sekolah sebagai manajer untuk pengembangan karier guru sudah cukup baik dilaksanakan oleh kepala sekolah untuk meningkatkan karier guru di SMA Negeri 1 Minas. Hal ini dapat dilihat dari perencanaan, pelaksanaan, pengevaluasian, memimpin mengendalikan program, adanya struktur organisasi serta pengawasan yang diberikan oleh kepala sekolah. Dan di sini penulis juga sudah melihat langsung dan wawancara ke lapangan bahwa kepala sekolah melakukan banyak kegitan dalam peningkatan karier guru, yang dilakukan kepala sekolah salah satunya yaitu mengadakan pelaksanaan pendidikan dan pelatihan guru. Adapun faktor yang pendukung dalam implementasi tugas kepala sekolah sebagai manajer untuk pengembangan karier guru terletak pada adanya kesesuain pendidikan pelatihan untuk karier guru, adanya dukungan dari keluarga dan banyaknya kuota yang tersedia dari pemerintah. Sedangkan faktor penghambatnya terletak pada dana pembiayaan yang kurang dari pemerintah dalam pelaksanaan pelatihan. Kata Kunci: Implementasi, Kepala Sekolah Sebagai Manajer, Pengembangan Karier Guru.
Manajemen Kepemimpinan Kepala Madrasah dan Pengembangan Keprofesian Berkelanjutan Dalam Peningkatan Mutu Kinerja Guru
Authors: Fauzi Anis , Suryapermana Nana , Rohman Aen Jaya
Published: September 2024

This study aims to find out how to overcome the problem of Madrasah Principal Leadership Management and Continuous Professional Development (PKB) in Improving the Quality of Teacher Performance. This research uses a qualitative approach with a case study method. The object of this research is Madrasah Ibtidaiyah Annizhomiyyah, Madrasah Ibtidaiyah Mathla'ul Anwar and Madrasah Ibtidaiyah Az Zahra, Labuan District, Pendeglang Regency. The results of the management of madrasah leadership in improving the quality of teacher performance at Madrasah Ibtidaiyah Annizhomiyah Jaha Labuan are 1) maximizing the learning process even during the covid-19 pandemic; 2) supervision is still carried out and the ability of all teachers to conduct online learning is mapped; 3) overcome the weaknesses and shortcomings of teachers in the online learning process; 4) most teachers take part in online training and webinars through zoom meetings; and 5) all teachers were PKG conducted and the weaknesses of the PKG results were taken seriously by the teachers. Meanwhile, the results of Continuous Professional Development (PKB) management in improving the quality of teacher performance at Madrasah Ibtidaiyah Annizhomiyah Jaha Labuan include 1) teachers understand and are competent in carrying out their duties and functions as teachers; 2) increasing the competence and ability of teachers in managing learning; 3) improving the results of the Teacher Performance Assessment (PKG) and following up on weaknesses found; and 4) increasing teacher performance which has an impact on increasing student achievement.TRANSLATE with x EnglishArabicHebrewPolishBulgarianHindiPortugueseCatalanHmong DawRomanianChinese SimplifiedHungarianRussianChinese TraditionalIndonesianSlovakCzechItalianSlovenianDanishJapaneseSpanishDutchKlingonSwedishEnglishKoreanThaiEstonianLatvianTurkishFinnishLithuanianUkrainianFrenchMalayUrduGermanMalteseVietnameseGreekNorwegianWelshHaitian CreolePersian //  TRANSLATE with COPY THE URL BELOW Back EMBED THE SNIPPET BELOW IN YOUR SITE Enable collaborative features and customize widget: Bing Webmaster PortalBack//
The Influence of Pedagogical Competence and Self-Efficacy on Teacher Performance Moderated by Academic Supervision
Authors: Handayani Handayani , Sunarto Sunarto , Bakti Ilham Susilo
Published: September 2024

This study aims to analyze the effect of educational competence and self-efficacy on teacher performance moderated by academic supervision of vocational school teachers in Bumijawa District, Tegal Regency. This type of research is explanatory research with a quantitative approach. The population in this study were SMK teachers in Bumijawa District, Tegal Regency, with a total population of 113 people. All members of the people as respondents. Of the 113 questionnaires distributed, 108 were returned. Based on the F test, it was found that the model deserves to be analyzed further. The coefficient of determination test results describes the independent variable X1 to the dependent variable and X2 to the dependent variable. The hypothesis was tested using a t-test using Moderation Regression Analysis (MRA). The results showed that educational competence affected teacher performance, self-efficacy did not affect teacher performance, academic supervision affected teacher performance, visionary leadership moderated the effect of educational competence on teacher performance, and academic management did not moderate the impact of self-efficacy on teacher performance.TRANSLATE with x EnglishArabicHebrewPolishBulgarianHindiPortugueseCatalanHmong DawRomanianChinese SimplifiedHungarianRussianChinese TraditionalIndonesianSlovakCzechItalianSlovenianDanishJapaneseSpanishDutchKlingonSwedishEnglishKoreanThaiEstonianLatvianTurkishFinnishLithuanianUkrainianFrenchMalayUrduGermanMalteseVietnameseGreekNorwegianWelshHaitian CreolePersian //  TRANSLATE with COPY THE URL BELOW Back EMBED THE SNIPPET BELOW IN YOUR SITE Enable collaborative features and customize widget: Bing Webmaster PortalBack//
Perencanaan Sumber Daya Manusia Di SMAN 34 Jakarta
Authors: Asy'ari Hasyim , Naufal Ahmad , Yaser Dirsya Gina , Hardi Dzalisa Septiani , Zahra Lailatul
Published: September 2024

Human Resources Planning yaitu Perencanaan Sumber Daya Manusia (SDM) adalah salah satu unsur terpenting untuk menciptakan suatu lembaga pendidikan yang efektif dan efisien. Dalam mengupayakan pencapaian tujuan yang diinginkan, suatu lembaga pendidikan tentu sangat memerlukan tahapan perencanaan Sumber daya manusia. Dengan perencanaan yang baik, dapat membantu meningkatkan keefektifan dalam struktur organisasi Sekolah. Metode Penelitian ini merupakan metode penelitian kualitatif lapangan. Penelitian kualitatif adalah penelitian yang bertujuan untuk mengungkap suatu gejala yang menjadi objek suatu bidang ilmu. Lebih khusus lagi, tujuan penelitian adalah untuk mengungkap kebenaran atau kesimpulan tentang suatu objek yang kemudian dapat dijadikan dasar untuk membentuk suatu teori. Adapun subjek penelitiannya adalah sumber daya manusia SMA Negeri 34 Jakarta Selatan. Hasil penelitian ini menunjukkan perencanaan sumber daya manusia di SMA Negeri 34 Jakarta Selatan berjalan dengan efektif dan efisien. Pada penelitian ini ditemukan bahwa perencanaan sumber daya manusia yang dilakukan oleh kepala sekolah, dan staff-staffnya berjalan dengan baik dan dapat di lihat dari beberapa program perencanaan sumber daya manusia yang berjangka di lingkungan SMA Negeri 34 Jakarta Selatan ini.