bluuebunny/crossref_metadata_2025 huggingface dataset:
Propuesta de un código de buenas prácticas para el tratamiento informativo sobre la Unión Europea en medios locales.
Authors: Rivas-de-Roca Rubén , García-Gordillo Mar
Published: October 2024

La Unión Europea (UE) constituye un actor político de máxima influencia en el territorio de las diferentes áreas locales europeas. Sin embargo, la relevancia de las instituciones comunitarias no ha venido acompañada tradicionalmente de coberturas informativas acordes, especialmente a escala local y regional, lo que ahonda en la existencia de un déficit democrático y comunicativo. Teniendo en cuenta la intrínseca función social de los medios de proximidad y el concepto de periodismo de calidad, el presente manuscrito aborda la construcción de un decálogo de recomendaciones mediante una estrategia de investigación mixta sobre estudios de casos en medios locales, combinando entrevistas semiestructuradas y análisis de contenido. El objetivo es proporcionar una herramienta analítica de buenas prácticas, que permita evaluar la calidad del tratamiento mediático del proyecto europeo y sirva a la vez como instrumento de transferencia. A partir de resultados prácticos sobre la escasez y fragmentación de la información europea, la propuesta actual define ocho variables sobre las que actuar, considerando la colisión entre la autovaloración positiva de los periodistas y las prácticas escasamente especializadas en torno a la UE. Nuestra principal contribución se orienta a la posibilidad de analizar y mejorar la pertinencia de los contenidos periodísticos locales, de acuerdo con la pretensión de construir una comunidad de ciudadanos debidamente informada acerca del proyecto europeo. El índice de buenas prácticas sugerido conforma así un modelo ideal para el desarrollo comunicativo de la Esfera Pública Europea.
Impacto y evolución del documental sonoro en España: extensión, narradores y entrevistas.
Authors: Ruiz Martínez Ángela , Moreno Espinosa Pastora , Figuereo-Benítez Juan C.
Published: October 2024

El primer documental seriado en formato sonoro se publicó en España en 2016, y en un periodo de tan solo ocho años, este género ha logrado consolidarse como un referente en el ámbito periodístico. El documental sonoro ofrece una forma innovadora de entretener al oyente a través de un periodismo de calidad, sustentado en una rigurosa investigación documental. Para comprender la evolución de este fenómeno, se ha realizado un análisis exhaustivo de 26 series documentales publicadas en España entre 2016 y 2020, un periodo que marca la irrupción de este formato y la expansión de los pódcast en diversas plataformas. Se analizaron un total de 76 horas de contenido mediante una metodología mixta. Los resultados revelan que el documental sonoro es mayoritariamente producido por periodistas y se caracteriza por su extensa duración. Un narrador guía al oyente a lo largo del relato y del proceso investigativo, adoptando un tono informativo con un margen para la subjetividad. Las entrevistas con los protagonistas de las historias constituyen un elemento central, complementadas en ocasiones por intervenciones de expertos. Este formato, que combina la narración informativa con elementos subjetivos y entrevistas detalladas, ofrece una experiencia envolvente y rica para la audiencia, consolidándose como una herramienta poderosa en el periodismo contemporáneo.
Simulating Confidence Intervals for Conditional Value-at-Risk via Least-Squares Metamodels
Authors: Lai Qidong , Liu Guangwu , Zhang Bingfeng , Zhang Kun
Published: October 2024

Metamodeling techniques have been applied to approximate portfolio loss as a function of financial risk factors, thus producing point estimates of various measures of portfolio risk based on Monte Carlo samples. Rather than point estimates, this paper focuses on the construction of confidence intervals (CIs) for a widely used risk measure, the so-called conditional value-at-risk (CVaR), when the least-squares method (LSM) is employed as a metamodel in the point estimation. To do so, we first develop lower and upper bounds of CVaR and construct CIs for these bounds. Then, the lower end of the CI for the lower bound and the upper end of the CI for the upper bound together form a CI of CVaR with justifiable statistical guarantee, which accounts for both the metamodel error and the noises of Monte Carlo samples. The proposed CI procedure reuses the samples simulated for LSM point estimation, thus requiring no additional simulation budget. We demonstrate via numerical examples that the proposed procedure may lead to a CI with the desired coverage probability and a much smaller width than that of an existing CI in the literature.

History: Accepted by Bruno Tuffin, Area Editor for Simulation.

Funding: This research was supported by the National Natural Science Foundation of China (NNSFC) [Grants 72101260 and 72471232], the Research Grants Council of Hong Kong (RGC-HK) [General Research Fund Project 11508620], InnoHK Initiative, the Government of the HKSAR, and Laboratory for AI-Powered Financial Technologies, and NNSFC/RGC-HK Joint Research Scheme [Project N_CityU 105/21].

Supplemental Material: The software that supports the findings of this study is available within the paper and its Supplemental Information ( https://pubsonline.informs.org/doi/suppl/10.1287/ijoc.2023.0394 ) as well as from the IJOC GitHub software repository ( https://github.com/INFORMSJoC/2023.0394 ). The complete IJOC Software and Data Repository is available at https://informsjoc.github.io/ .
Do t-Statistic Hurdles Need to Be Raised?
Authors: Chen Andrew Y.
Published: October 2024

Many scholars have called for raising statistical hurdles to guard against false discoveries in academic publications. I show these calls may be difficult to justify empirically. Published data exhibit bias: Results that fail to meet existing hurdles are often unobserved. These unobserved results must be extrapolated, which can lead to weak identification of revised hurdles. In contrast, statistics that can target only published findings (e.g. empirical Bayes shrinkage and the false discovery rate) can be strongly identified, as data on published findings are plentiful. I demonstrate these results theoretically and in an empirical analysis of the cross-sectional return predictability literature.

This paper was accepted by Kay Giesecke, finance.

Supplemental Material: The data files are available at https://doi.org/10.1287/mnsc.2023.03083 .
Design-Based and Theory-Based Approaches to Strategic Decisions
Authors: Gambardella Alfonso , Messinese Danilo
Published: October 2024

We develop a unified framework to examine the implications of two primary approaches to strategic decision-making under uncertainty: designing and shaping future scenarios vis-`a-vis testing theories about future scenarios. We conducted a three-arm randomized controlled trial involving 308 early-stage entrepreneurs, dividing them into three groups: design-based training, theory-based training, and a control group, and tracked them over approximately 1.5 years. Our findings reveal that both approaches reduce the need for information in decision-making and lead to higher commitment rates. The design-based approach encourages action despite negative beliefs, resulting in less frequent and later project termination. In contrast, the theory-based approach promotes a more conservative termination rule, leading to earlier and more frequent project abandonment. Although the theory-based approach is associated with higher average performance upon survival, the design-based approach fosters breakthroughs decision-makers. In sum, the design-based approach is well-suited for innovative ventures that gather information to shape their environment, whereas the theory-based approach is optimal for pursuing high performance under lower degrees of uncertainty.
Antipsychotic drugs and their possible cardiovascular adverse effects – literature review
Authors: Gładysz Alicja , Zamorski Maciej , Stebel Agata , Ligoda Julia , Machaj Radosław , Mach Franciszek
Published: October 2024

Introduction: Antipsychotic medication, frequently prescribed for managing psychosis, significantly enhance the quality of life for psychiatric patients. Nonetheless, they also harbor the risk of triggering cardiovascular side effects, which can range in severity and may pose challenges for patients, potentially disrupting their therapy. This study aims to elucidate these adverse effects, their potential etiology, and their prevalence.
Material and methods: A review of available literature was performed by searching PubMed and Google Scholar, using the following keywords: antipsychotic drugs, adverse effects, cardiotoxicity, arrhythmia for original papers, review papers and meta-analyses published from 1992 to 2024.
Discussion: It has been well-known for a long time that antipsychotic medication carries a lot of possible adverse effects. The cardiovascular adverse effects associated with antipsychotic medication encompass orthostatic hypotension, prolongation of the QT interval, atrial fibrillation, alterations in heart rate and cardiotoxicity, which may include myocarditis and cardiomyopathy. Fortunately, the occurrence of the most severe complications stemming from these effects is relatively uncommon. While the adverse effects of first and second-generation antipsychotics are extensively documented, further research is warranted to investigate the potential side effects of third-generation antipsychotic drugs.
Conclusions: Cardiovascular adverse effects associated with antipsychotics can pose significant challenges and may even be life-threatening for patients. However, awareness of these effects should not discourage clinicians from prescribing them. Instead, it should motivate them to deepen their understanding and expertise. It would definitely lead to the improvement of patient care and treatment outcomes.
Identification of fingerprint image with Minkowski distance algorithm approach
Authors: Tulloh Wisnu Catur Rachmad , Wijayanti Dian Eka
Published: October 2024

In the digital era, fingerprint identification plays a critical role in information technology administration. Various studies have been conducted to improve the fingerprint identification process, but there are still cases of identification failures that are fatal. This research discusses fingerprint identification with the Minkowski distance method. The data of fingerprints are taken from Mathematics students and the Kaggle site. Data analysis includes the steps of image retrieval, dimensioning, conversion to grayscale, pattern matching, and accuracy measurement. Results show an improvement in data accuracy with a structured approach to data capture and preprocessing. Results from primary data obtained an accuracy of 56.67% while from secondary data obtained an accuracy of 93%.
Improving mathematical literacy: How does PBL affect the students’ performance?
Authors: Andini Fadhila , Siregar Machrani Adi Putri
Published: October 2024

This research is motivated by the many problems that often arise during classroom learning, especially mathematics. The aim of this research is to find out how students' abilities and problems are described in learning mathematics regarding relationships and functions taught using problem-based learning models and conventional learning models. With a post-test-only control group design, this research is a quasi-experimental research. The population in this study were all class VIII students at Bahagia Medan Private Middle School. Cluster random sampling was used to select 36 participants from each of two classes (control class and experimental class). This research instrument is a test with five questions. Based on the results of data analysis, the sig value was obtained. (2-tailed) of 0.000 < 0.05. Therefore, it can be concluded that Problem Based Learning and conventional learning produce significantly different levels of mathematical literacy. The practical implication of this research is that educational practitioners, especially mathematics teachers at the junior high school level, can utilize these findings to improve their teaching. PBL can be used as a basis for designing more innovative and student-centered learning units, which can help students develop a deeper understanding of mathematical concepts and improve their ability to solve problems. Adequate support and training for teachers in implementing PBL is also important to ensure its successful implementation in the classroom.
Website Application Security Value Analysis Using Crawling Method Against SQL Injection Attacks
Authors: Yudistiawan Ari Dimas , Anwar Nuril
Published: October 2024

This study focuses on analyzing security vulnerabilities in the Codelatte website, specifically targeting SQL Injection attacks. While the implementation of HTTPS has enhanced user communication and server security, outdated pages lacking WordPress security features remain vulnerable to SQL Injection. The research employs a crawling method to assess security gaps, starting with URL processing, data crawling, and interaction with the web server, followed by output generation in the form of an HTML file. The collected data is used for vulnerability testing via the Acunetix web vulnerability scanner, as well as manual testing and Sqlmap penetration testing. Findings reveal security weaknesses categorized into informational, low, medium, and high risk levels. Through crawling, the study identifies vulnerabilities and reduces them to informational, low, and medium levels, highlighting the importance of regularly updating website security. The final report provides recommendations for enhancing the Codelatte website's security to prevent unauthorized database access.
“FORMING / ELSE WHERE”: N. H. Pritchard by Sight and Sound
Authors: Grundy David
Published: October 2024

Abstract: In 1967, Wilmer Lucas wrote that N. H. Pritchard’s poems “decompose the reader by sight and sound.” This essay follows Lucas’s prompt in several ways. It examines Pritchard’s early poetry in the context of the New York art scene and the Umbra Poets Workshop, outlining his development of the concept of “transrealism” and the subsequent visual reorganization of his work, before focusing on the sonic dimensions of his poetry, and suggesting that his approach ultimately led him toward silence. The conclusion emphasizes Pritchard’s legacy in the work of new generations of experimental musicians and poets and its continuing relevance today.
Laser printing of silver and silver oxide
Authors: Adams Jordan M. , Heligman Daniel M. , O’Dell Ryan , Wang Christine Y. , Young Daniel
Published: October 2024

We show that direct laser writing in aqueous silver nitrate with a λ = 1030 nm femtosecond laser results in the deposition of a mixture of silver oxide and silver, in contrast to the pure silver deposition previously reported with 780 nm femtosecond direct laser writing. However, adding photoinitiator prevents silver oxide formation in a concentration-dependent manner. As a result, the resistivity of the material can also be controlled by photoinitiator concentration with resistivity being reduced from approximately 9e-3 Ωm to 3e-7 Ωm. Silver oxide peaks dominate the X-ray diffraction spectra when no photoinitiator is present, while the peaks disappear with photoinitiator concentrations above 0.05 wt%. A THz polarizer and metamaterial are printed as a demonstration of silver oxide printing.
Zika virus T-cell based 704/DNA vaccine promotes protection from Zika virus infection in the absence of neutralizing antibodies
Authors: Roth Claude , Pitard Bruno , Levillayer Laurine , Lay Sokchea , Vo Hoa Thi My , Cantaert Tineke , Sakuntabhai Anavaj
Published: October 2024

Zika virus (ZIKV) and dengue virus (DENV) are closely related flaviviruses co-circulating in the same endemic areas. Infection can raise cross-reactive antibodies that can be either protective or increase risk of severe disease, depending on the infection sequence, DENV serotype and elapsed time between infection. On the contrast, T cell-mediated immunity against DENV and ZIKV is considered protective. Therefore, we have developed a T cell vaccine enriched in immunodominant T cell epitopes derived from ZIKV and evaluated its immunogenicity and efficacy against ZIKV and DENV infection. Mice were vaccinated using DNA vaccine platform using the tetrafunctional amphiphilic block copolymer 704. We show that vaccination of 2 different HLA class I transgenic mice with the ZIKV non-structural (NS) poly-epitope elicits T cell response against numerous ZIKV epitopes. Moreover, vaccination induces a significant protection against ZIKV infection, in the absence of neutralizing or enhancing antibodies against ZIKV. However, vaccination does not induce a significant protection against DENV2. In contrast, immunization with a DENV1-NS poly-epitope induces a significant protection against both DENV1 and DENV2, in the absence of humoral immunity. Taken together, we have shown that T-cell based vaccination could protect against multiple flavivirus infections and could overcome the complexity of antibody-mediated enhancement.
Does improvement of railway network promote urban economic growth? evidence from Northeast China
Authors: Gao Huiying , Zhang Yu , Li Guangquan
Published: October 2024

The railway network connects different cities and regions and plays an important role in the transportation system. This paper theoretically analyzes the causal effect and mechanisms of the railway network on urban economic growth, and explores the direct effects, threshold effects, and spatial spillover effects of improved centrality in the railway network on urban economic growth in Northeast China. The results show that: (1) There is a similarity between the economic growth level and the trend of the railway network in Northeast China. From a spatial perspective, there are regional differences in the development of the railway network. (2) From the perspective of the direct effects, each unit improvement in railway network centrality leads to a 0.160 unit increase in urban economic growth in Northeast China. The degree of influence of other variables on urban economic growth, in descending order, is labor employment level, material capital investment, information development level, technological development level, human capital, and degree of openness. (3) From the perspective of the threshold effects of the railway network, the threshold values and the number of threshold levels are different for different regions. (4) There are significant spatial spillover effects in the railway network of Northeast China, and an increase in the centrality of a city’s network can have negative spatial spillover effects on the economies of surrounding areas. Based on these results, we recommend that Northeast China should focus on the construction and improvement of the railway network, strengthen the connections between regions, and promote the overall economic growth of the region while improving its international competitiveness.
Immunocyte phenotype and breast cancer risk: A Mendel randomization analysis
Authors: Li Bolin , Li Xinmeng , Liu Jialing , Gao Yuanhe , Li Yan
Published: October 2024

Background

Breast cancer remains a significant global health challenge. Understanding its etiological factors, particularly the role of immune system components, is crucial. This study leverages Mendelian randomization (MR) to investigate the causal relationship between various immune cell features and the risk of developing breast cancer.

Methods

Utilizing two-sample MR analysis, we examined 731 immune cell features across 7 groups for their potential causal links to breast cancer. We analyzed genome-wide association studies (GWAS) data of 257,730 Europeans, comprising 17,389 cases and 240,341 controls, focusing on 24,133,589 single nucleotide polymorphisms (SNPs). Instrumental variables (IVs) were selected based on genetic associations, with rigorous statistical methods employed, including inverse variance weighting (IVW) and weighted median-based estimation.

Results

Our analysis identified 20 immunophenotypes with significant causal associations with breast cancer risk. Notably, contain B cell, mature T cell, T + B + NK (TBNK) cells, regulatory T (Treg) cell, Classic dendritic cells (cDCs), Monocyte, and Myeloid cell group features displayed positive or negative correlations with breast cancer. For instance, specific B cell phenotypes were found to have both positive and negative causal relationships with breast cancer. Additionally, reverse MR analysis revealed no significant causal effects of breast cancer on these immune characteristics.

Conclusions

This study underscores the complex interplay between various immune cell phenotypes and breast cancer risk. The identified immunophenotypes could be potential biomarkers or targets for future therapeutic interventions. Our findings contribute to a deeper understanding of the immunological dimensions of breast cancer etiology.
The influence of palm fiber reinforcement on the cement content of vegetated concrete substrate under the condition of equal strength
Authors: Huang Xiaole , An Xue , Zeng Gang , Xiong Shiyuan , Sun Xiaojun
Published: October 2024

Vegetated concrete substrate (VCS) is a kind of ecological cemented soil, which has very wide application prospect in high and steep rock slope eco-protection. Cement is an important component of VCS, but it has high energy consumption and environmental pollution. Fiber reinforcement plays an positive role in improving the mechanical properties of soil, and its use as a substitute for cement content in VCS under the condition of equal strength is rarely investigated. In this study, the unconsolidated-undrained (UU) triaxial compression test of unreinforced substrate as blank control samples (BCS) and reinforced substrate as fiber reinforced samples (FRS) were carried out. The test results showed that the stress-strain curve of VCS can be divided into compaction stage, elastic stage, plastic stage and strain hardening stage. The average peak strength increased by 34.3kPa, 53.6kPa, 218kPa and 81.8kPa as cement content of VCS was 0%,4%, 6% and 8%, respectively. The relationship between the peak strength and cement content of VCS could be better fit by Boltzmann function. The mathematical model of fiber instead of cement in VCS under the condition of equal strength was established. It is found that there is a critical point of cement content according to the mathematical model. The cement of VCS can be completely replaced by plam fiber as the cement content is less than the critical point. While the cement content is higher than the critical point, the cement of VCS can be partially replaced by plam fiber. The decrease of average cement content was 17.23%, 19.00%, 24.27% and 25.34% with 0.2%, 0.4%, 0.6% and 0.8% fiber content in reinforced substrate, respectively. The theoretical method and interpolation method for fiber substitute cement content of VCS under equal strength condition were proposed, which can provide technical guidance for ecological slope protection engineering practice of vegetated concrete.
Structural equation modelling of the role of cognition in functional interference and treatment nonadherence among haemodialysis patients
Authors: Chan Frederick H. F. , Sim Pearl , Lim Phoebe X. H. , Zhu Xiaoli , Lee Jimmy , Haroon Sabrina , Lau Titus Wai Leong , Liu Allen Yan Lun , Khan Behram A. , Choo Jason C. J. , Griva Konstadina
Published: October 2024

Background and objectives

Cognitive impairment is common in haemodialysis patients and associated with adverse health outcomes. This may be due to cognitive impairments interfering with daily functioning and self-care, but evidence is limited. This cross-sectional study aims to explore the interrelationships between cognition and functional outcomes in haemodialysis patients.

Methods

Haemodialysis patients completed measures of objective cognitive function (Montreal Cognitive Assessment), everyday problem-solving skills (scenario-based task), and subjective cognitive complaints (self-report). Participants also self-reported sociodemographic information, functional interference, treatment nonadherence, and mood and fatigue symptoms. Patients’ clinical data including comorbidities and lab results were extracted from medical record. Structural equation modelling was performed.

Results

A total of 268 haemodialysis patients (mean age = 59.87 years; 42.5% female) participated. The final model showed satisfactory fit: CFI = 0.916, TLI = 0.905, RMSEA = 0.033 (90% confidence interval 0.024 to 0.041), SRMR = 0.066, χ2(493) = 618.573 (p < .001). There was a negative association between objective cognitive function and subjective cognitive complaints. Cognitive complaints were positively associated with both functional interference and treatment nonadherence, whereas objective performance was not. Everyday problem-solving skills emerged as a distinct aspect of cognition not associated with objective performance or subjective complaints, but had additive utility in predicting functional interference.

Conclusions

Subjective cognitive complaints and everyday problem-solving skills appear to be stronger predictors of functional variables compared to objective performance based on traditional tests. Routine screening of everyday cognitive difficulties may allow for early identification of dialysis patients at risk of cognitive impairment, functional interference, treatment nonadherence, and poor clinical outcomes.
Associations of circulating matrix metalloproteinases and tissue inhibitors of matrix metalloproteinases with clinically relevant outcomes in idiopathic pulmonary fibrosis: Data from the IPF-PRO Registry
Authors: Amubieya Olawale , Todd Jamie L. , Neely Megan L. , Kaner Robert J. , Lasky Joseph A. , Namen Andrew , Hesslinger Christian , Palmer Scott M. , Weigt S. Samuel , Belperio John A.
Published: October 2024

Introduction

We assessed the prognostic utility of circulating levels of matrix metalloproteinases (MMPs) and tissue inhibitors of matrix metalloproteinases (TIMPs) in patients with idiopathic pulmonary fibrosis (IPF) in the IPF-PRO Registry.

Methods

MMP and TIMP concentrations were quantified by ELISA in plasma from 300 patients. A Cox proportional hazard regression model was used to assess associations between select MMPs and TIMPs and death and disease progression (absolute decline in forced vital capacity ≥10% predicted, death, or lung transplant).

Results

Over a median follow-up of 30.4 months, 98 patients died and 182 patients had disease progression. In unadjusted analyses, higher concentrations of MMPs 2, 3, 8 and 9 and TIMPs 1, 2 and 4 were associated with an increased risk of death. MMPs 2 and 8 and TIMP1 remained associated with death after adjustment for clinical factors. In unadjusted analyses, higher concentrations of MMPs 8 and 9 and TIMPs 1 and 4 were associated with an increased risk of disease progression. MMPs 8 and 9 and TIMP1 remained associated with progression after adjustment for clinical factors.

Conclusion

Circulating levels of MMP8 and TIMP1 may provide information on the risk of outcomes in patients with IPF not captured by clinical measures.
Comparative analysis of the effects of cyclophosphamide and dexamethasone on intestinal immunity and microbiota in delayed hypersensitivity mice
Authors: Li Xiangling , Wen Ruyan , Chen Ben , Luo Xia , Li Lu , Ai Jun , Yu Junlong
Published: October 2024

Background

The T cell-mediated delayed-type hypersensitivity (DTH) response is critical for elucidating cellular immune mechanisms, especially the role of memory T cells upon antigen re-exposure. This study aimed to investigate the specific effects of the immunosuppressive drugs Cyclophosphamide (CY) and Dexamethasone (DEX) on intestinal immunity and microbiota in a DTH mouse model, contributing to a more nuanced understanding of their immunomodulatory mechanisms.

Methods

Female BALB/c mice were sensitized to 2,4-dinitrofluorobenzene (DNFB) and randomly allocated into control, CY, and DEX groups. The impact of CY and DEX on immune function was assessed through measurement of thymus and spleen indices, lymphocyte proliferation in mesenteric lymph nodes (MLNs) using MTT assay, and flow cytometric analysis of T cell subsets and TCR expression. Intestinal secretory IgA (sIgA) was quantified by ELISA, and gut microbiota diversity was evaluated using 16S rRNA gene sequencing.

Results

CY and DEX significantly reduced the immune function in DNFB-induced sensitized mice, as indicated by decreased thymus and spleen indices, MLN enlargement, intestinal sIgA content, and ear swelling degree. Flow cytometry revealed that CY increased the proportion of total CD3+ T cells but reduced CD3+CD69+ activated T cells and CD3+TCRγ/δ+ T cells, while DEX increased CD3+CD4+ helper T cells. Both drugs induced distinct changes in gut microbiota diversity and structure, with CY enhancing α diversity and DEX reducing it.

Conclusions

The study demonstrates that CY and DEX have distinct regulatory effects on the immune organ index, distribution of T cell subsets, and diversity and structure of gut microbiota on DTH-induced immune responses mice, suggesting their differential influence on intestinal mucosal immunity. These findings have implications for the development of targeted immunotherapies and understanding the interplay between immunosuppressive drugs and gut microbiota.
Telemedicine Engineering
Authors: Jánki Zoltán Richárd
Published: October 2024

A doktori értekezés a telemedicina rendszerfejlesztés főbb kihívásait mutatja be az adatminőség és a fejlesztői produktivitás szempontjából. Bemutattunk számos modellezési, szimulációs, gráf-alapú és közelítő módszert, amelyekkel a komplex telemedicina rendszerek adatminősége és konzisztenciája mérhető. A WebDAO tervezési minta alkalmazásával egy saját fejlesztésű SDK-t mutattunk be, amely nem csak javítja az adatintegritást, hanem növeli a produktivitást is. A fejlesztéshez szükséges idő mérésén túl az eredményeket repository metrikák összehasonlításával is validáltuk. Tapasztalataink alapján arra a követ-keztetésre jutottunk, hogy a strukturális és architekturális tervezési minták nagyon fontos szerepet játszanak és használatuk rengeteg előnyt von maga után. Ennek eredményeként különféle természetes nyelvfeldolgozási, úgynevezett NLP technikát dolgoztunk ki annak érdekében, hogy még jobban megértsük az alkalmazott legjobb gyakorlatokat, és mi magunk is javaslatokat tehessünk a modern webfejlesztés gyakorlatára.
Modeling and Optimizing for NP-hard Problems in Graph Theory
Authors: Anaqreh Ahmad
Published: October 2024

Ez a PhD értkezés optimalizációs módszereket mutat be NP-nehéz gráfproblémákhoz. Ezen feladatok megoldására, jelen tudásunk szerint, nem léteznek polinomiális időben végrehajtható algoritmusok. Konkrétan három gráfproblémát vizsgáltunk, és mindegyikhez különböző optimalizációs módszereket alkalmaztunk, úgy mint egészértékű lineáris programozás, metaheurisztikák és heurisztikák. Minden esetben a javasolt módszerek teljesítményét összehasonlítottuk a szakirodalomban találhatóakkal, figyelembe véve olyan tényezőket, mint a végrehajtási idő és az elért megoldások minősége. Az összehasonlító elemzéseink célja a javasolt optimalizációs módszerek hatékonyságának bemutatása.
Pengaruh Penggunaan Serat Kulit Jagung dan Abu Sekam Padi Sebagai Bahan Campuran Pembuatan Asbes Plafon
Authors: Fitrianto Arizal Fadli , H Hartono , Nurdiana Asri
Published: October 2024

Agricultural waste is one of the most common sources of waste in Indonesia, corn husk fiber and rice husk ash are examples of this agricultural waste. In this study, corn husk fiber and rice husk ash were used as a mixture for making asbestos ceilings. This study used an experimental method by using corn husk fiber as a substitute for fiberglass fiber and rice husk ash as a partial substitute for cement. Corn husk fiber has high flexural properties which are assumed to be able to replace fiberglass fibers in the manufacture of asbestos ceilings. Meanwhile, rice husk ash contains silica (SIO2), which is one of the compositions of cement. Therefore, it is proposed to innovate the use of corn husk fiber and rice husk ash as a mixed ingredient for making asbestos ceilings which aim to minimize existing waste and create environmentally friendly asbestos ceilings that have better flexural strength and water absorption than conventional asbestos ceilings. This innovation is expected to produce a more economical price.
Pemanfaatan Limbah Serbuk Kayu dengan Zat Aditif Anti Stripping Agent Terhadap Uji Durabilitas AC-WC (Asphalt Concrete–Wearing Course)
Authors: Rahman Ivo Neyra , Damara Devina Sinta , Susanti Riza , Nurdiana Asri
Published: October 2024

The increasing number of vehicles each year in Indonesia causes excessive repetition of loads that occur on road pavements, as well as extreme weather changes resulting in damage to the pavement layer, especially at the level of durability, especially in the AC-WC layer. The use of sawdust waste in the AC-WC mixture has met the marshall test values/characteristics, but it is necessary to test its durability; a high durability value indicates that the road is more durable and resistant to weather and water. Therefore, it is necessary to improve the quality of road pavement by adding anti-stripping agent additives at levels of 0.3%, 0.4%, and 0.5% to the AC-WC mixture of 25% wood powder waste substitution in order to improve the properties of asphalt in increasing the coating of asphalt with aggregates in a wet state to produce stronger bonds to extend the life of the road. This study aims to determine the effect of adding anti-stripping agent additives in AC-WC mixtures with sawdust waste on durability tests. Experimental tests were conducted using the research method at the Civil Engineering Laboratory of Diponegoro University Vocational School Semarang. The study results obtained a durability value based on the calculation parameters of the Residual Strength Index (IKS) based on the General Specifications of Bina Marga 2018 (Rev 2), which shows the durability of AC-WC asphalt. The results of marshall testing obtained based on averages include VIM 4.11%, VMA 13.15%, VFA 77.33%, Stability 1893.73 Kg, Flow 2.17 mm and MQ 1070.03 kg/mm from 25% wood powder waste variation with anti-stripping agent additives 0.3%; 0.4%; 0.5% in AC-WC wear layer has met the General Specifications of Bina Marga 2018 (Rev 2). The average durability values of IKS with sequential soaking time are 24 hours 92.24%, 48 hours 88.87%, and 72 hours 80.08%.
From economic turbulence to demographic change: Tracing the pathways of the second demographic transition in post-socialist contexts
Authors: Johnson Stefan
Published: October 2024

Building on the rich tapestry of demographic and economic research, this paper extends the analysis of the Second Demographic Transition (SDT) within the milieu of Czechia, Slovakia, Poland, Romania, and Austria, shedding light on the nuanced interplay between economic variables and demographic indices such as the Total Fertility Rate and the Sobotka’s Second Demographic Transition Behavioral Index (SDT1). Drawing from an extensive dataset spanning over two decades, the study applies Pearson’s correlation analysis, Holt’s Exponential Smoothing, and stepwise regression to unravel the complexities of demographic behaviors in the face of economic prosperity and inequality, as measured by GDP, Gini coefficient, and the Human Development Index. The findings reaffirm the pivotal role of economic factors in shaping demographic trends and highlight the divergent paths Czechia, Slovakia, Poland, and Romania have embarked upon compared to Austria, a representation of Western Europe’s demographic evolution. This comparative analysis underscores the significance of wealth distribution in influencing demographic outcomes, offering a comprehensive understanding of the second demographic progression in the context of economic transitions. The research contributes to the broader discourse on demographic changes, providing insightful implications for policy and future studies in the dynamic landscape of Central and Eastern Europe and beyond.
Power dynamics and the VillageTalk app: Rural mediatisation and the sense of belonging to the village community as communicative figuration
Authors: Zerrer Nicole
Published: October 2024

Rural mediatisation defines the simultaneous transformation of rural community life and its media environment, particularly in the digital age. Typical rural problems such as declining meeting places are being addressed by developing village-specific communication apps. Due to the so-called “urban bias,” not much is known about rural mediatisation, and theoretical concepts are also lacking. This study addresses this research gap by analysing three German village communities, where a village communication app has been introduced. For this analysis, the applicability of the approach of communicative figurations (Hepp and Hasebrink, 2017) is assessed and further developed by adding the dimension of “power dynamics” to the characteristics. Moreover, the findings indicate that a rediscovered sense of belonging to the village community, resulting from a combination of internal and external factors, is a transformation associated with this process of rural mediatisation.
Realization of even permutations of even degree by products of four involutions without fixed points
Authors: Malyshev Fedor M.
Published: October 2024

We consider representations of an arbitrary permutation π of degree 2n, n ⩾ 3, by products of the so-called (2
n
)-permutations (any cycle of such a permutation has length 2). We show that any even permutation is represented by the product of four (2
n
)-permutations. Products of three (2
n
)-permutations cannot represent all even permutations. Any odd permutation is realized (for odd n) by a product of five (2
n
)-permutations.
On radio graceful Hamming graphs of any diameter
Authors: Niedzialomski Amanda , Niedzialomski Robert
Published: October 2024

We show that Hamming graphs of diameter D are radio graceful provided that each component of the Hamming graph is a complete graph with at least D vertices. This generalizes the results known previously for diameters D = 2 and D = 3 and for general D with the assumption that the components of the Hamming graph have the same or pairwise relatively prime numbers of vertices.
Job Crafting among Airport Security: The Role of Organizational Support, Work Engagement and Social Courage
Authors: Tufan Cenk , Uğurlu Özlem Yaşar , Mert İbrahim Sani , Kizildag Duygu
Published: October 2024

The dynamic nature of security risks confronting the global aviation industry necessitates a deeper understanding of the factors influencing job-crafting behaviors among airport security officers. Grounded in the Job Demands-Resources model, this study aims to investigate the impact of perceived organizational support, work engagement, and social courage (SC) on job crafting among airport security officers. Data were collected from 379 airport security officers at Antalya Airport, Turkey’s busiest airport, through face-to-face surveys conducted between January and December 2022. The findings indicate that organizational support positively influences job crafting, with work engagement mediating this relationship. Furthermore, SC moderates both the relationship between work engagement and job crafting and the strength of the mediating effect of work engagement on the relationship between organizational support and job crafting. This study addresses gaps in the literature by providing a detailed framework that illustrates how organizational support, work engagement, and SC impact job crafting among airport security officers in a non-Western context. Promoting organizational support and fostering employees’ SC can enhance job-crafting behaviors, leading to a more adaptable and resilient workforce capable of addressing the evolving security challenges in the aviation industry.
Construction of Entrepreneurship Coaching Index: Based on a Survey of Art Design Students in Higher Vocational Colleges in Guangdong, China
Authors: Zeng Lin , Chang Yuan-Cheng
Published: October 2024

In China, higher education increasingly emphasizes innovation and entrepreneurship, recognizing its pivotal role in enhancing college students’ entrepreneurial skills. While extensive research exists on entrepreneurship education for undergraduate students in Chinese universities and vocational colleges, there is a notable gap in studies specifically addressing entrepreneurship coaching for vocational art and design students. This investigation addresses this gap by examining the development of entrepreneurship coaching indicators for vocational art and design majors through a comprehensive literature review. By employing the fuzzy Delphi method, a questionnaire survey involving 12 experts was conducted to establish entrepreneurship coaching indicators for vocational art and design majors in Guangdong, China. The findings reveal a framework comprising entrepreneurship knowledge, practical skills, entrepreneurial dispositions, and intentions, organized into 4 dimensions, 15 principal indicators, and 46 sub-indicators.
Disparities in the geospatial allocation of public facilities from the perspective of living circles
Authors: Chen Xi , Zhang Qi , Zhang Hui
Published: October 2024

This research meticulously explores the spatial variances in the allocation of public service facilities within Wenzhou’s central urban area, deploying a lens of “living circles” and utilizing a 15-min walkable distance as a pivotal metric. Employing a suite of analytical methods, including kernel density estimation, nearest neighbor index, Ripley’s K, and Z-score analysis, and leveraging Amap data, the study unveils pronounced disparities in both the quantity and distribution of public service facilities. Notably, a conspicuous concentration of facilities, particularly in transportation and commercial sectors, is observed in the early-developed core region, while surrounding areas manifest a palpable deficiency in both quantity and category, impacting residents’ quality of life and accessibility. The research further delineates a “single-center” structural pattern in the spatial distribution of public service facilities, albeit with distinct patterns for different facility types. Furthermore, a comprehensive evaluation at the street level, considering factors such as comprehensive accessibility scores, variation coefficients, and population density, reveals substantial disparities and internal variations in facility accessibility among different streets. The findings underscore a critical need for strategic optimization in the allocation of public service facilities, with recommendations including supplementing facilities based on extant needs, addressing internal disparities among streets, and prioritizing facility development in streets characterized by diverse attributes and population densities. This study not only augments our understanding of spatial disparities in public service facility distribution but also provides actionable insights for enhancing strategic allocation and planning in Wenzhou’s central urban area, thereby contributing to the burgeoning body of knowledge in urban planning and public service facility allocation within the context of living circles.
Quasi-semigroups of operators on homogeneous time scales
Authors: Montenegro Sandra , Moya Ambrosio Tineo , Leiva Hugo
Published: October 2024

This article discusses the concept of quasi-semigroups of bounded linear operators within the framework of time scales, encompassing both continuous and discrete cases. It extends the classical theory of quasi-semigroups of operators, which serves as a generalization of strongly continuous semigroups of operators in time scales. In addition, the text mentions providing applications in abstract evolution equations, indicating practical implications of this theoretical framework.
Thromboelastogram changes are associated with postoperative complications after cytoreductive surgery
Authors: Goder Noam , Zac Lilach , Nevo Nadav , Gerstenhaber Fabian , Goren Or , Cohen Barak , Matot Idit , Lahat Guy , Nizri Eran
Published: October 2024

Objectives

Cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) is used to treat peritoneal surface malignancies. However, surgical morbidity is high, and prediction of severe postoperative complications (SPC) is limited. We hypothesized that the changes in thromboelastogram (TEG) values following CRS could be associated with SPC.

Methods

We retrospectively analyzed a cohort of CRS and HIPEC patients who had TEG measured before and after CRS. Clinical and postoperative data were retrieved from a prospectively maintained database.

Results

Our 37-patient cohort was comprised of 24 men and 13 women with an age (median, [interquartile range, IQR]) 55 (47–65) years, of whom six had SPC. The ones with SPC did not differ from the others in age, sex, tumor histology or preoperative chemotherapy. The extent of surgery as measured by the peritoneal carcinomatosis index and the number of organs resected was comparable between SPC group vs. no SPC [9 (3–10.5) vs. 9 (5–14), p=1.0; 2 (0.75–2.25) vs. 2 (1–3), p=0.88, respectively]. The TEG parameters showed increased R- and K- time for the patients with SPC compared to those without (6 ± 3.89 vs. 4.05 ± 1.24, p=0.01; 1.65 ± 0.63 vs. 1.25 ± 0.4, p=0.03, respectively). The TEG values were significantly associated with SPC in the multivariable analysis (odds ratio=1.53, p=0.05).

Conclusions

TEG changes are associated with SPC. Intra-operative markers of SPC could guide intraoperative decisions, such as stool diversion and postoperative triage of patients to an appropriate level of care.
Önvezető autót vásárolni hajlandó fogyasztók azonosítása kiválasztás alapú conjoint elemzéssel
Authors: Ujházi Tamás
Published: October 2024

A TANULMÁNY CÉLJA
Az önvezető járművek elterjedése megoldást jelenthet számos egyéni és társadalmi szempontból egyaránt égető mobilitási kihívásra. Ennek eléréséhez elengedhetetlen társadalmi elfogadásuk és tényleges használatuk. Tanulmányunkban célunk meghatározni, hogy az egyes fogyasztói csoportok hogyan viszonyulnak a járműipari innovációkhoz, illetve azonosítani azokat, akik jelenlegi percepcióik alapján vásárolnának önvezető autót.
ALKALMAZOTT MÓDSZERTAN
Kutatásunkhoz kiválasztás alapú conjoint elemzést (CBC) használtunk, melyhez a téma kutatásában nemzetközileg elfogadott UTAUT modell keretrendszerét vettük alapul. A módszertan segítségével döntési szimulációt hoztunk létre, melynek során előre meghatározott termékjellemzők kombinációiból elképzelt autókat hoztunk létre. 125 válaszadónk ezek közül választották ki a saját igényeiknek leginkább megfelelőt. Eredményül meghatározásra került a termékjellemzők relatív fontossága, a termékjellemzők szintjeinek részleges hasznosságai, valamint látens osztályú multinomiális logisztikus regresszió segítségével szegmentáltuk válaszadóinkat.
LEGFONTOSABB EREDMÉNYEK
Kutatásunk során válaszadóinknak egyenként 12 alkalommal kellett kiválasztaniuk a felkínált négy közül azt a járművet, amely leginkább megfelel preferenciáiknak. Az elemzés során három egymástól jól elkülöníthető válaszadói csoportot azonosítottunk: „autóipari innovátorok” 38,2%, „környezetbarát kompakt autósok” 33,8% és „megalomán kipufogógázfüggők” 28,1%. Eredményeinkből kiderül, hogy számos tekintetben különbségeket fedezhetünk fel az egyes csoportok preferenciáit illetően, de a jármű irányítását illetően kijelenthetjük, hogy válaszadóink egyértelműen elutasítják a kizárólag önvezető jármű megvásárlását.
GYAKORLATI JAVASLATOK
Tanulmányunk a kutatói közösség számára hozzáadott értéket képviselhet, mivel CBC elemzéssel Magyarországon még nem vizsgálták az önvezető járművekhez kapcsolódó fogyasztói preferenciákat, pedig a módszer kimondottan a még fejlesztés alatt álló termékek piaci igényekhez történő igazítására szolgál. Továbbá figyelmébe ajánljuk a magántulajdonba történő értékesítésre szánt önvezető autókat fejlesztő szervezeteknek. Sikerült ugyanis rámutatnunk, hogy a teljes önvezetésre képes technológiával felszerelt autót vásárolni hajlandó szegmens számára a klasszikus kivitel a legvonzóbb, mint pl. a kombi és a sedan. Fontos számukra továbbá, hogy környezetkímélő, azaz elektromos, esetleg hibrid meghajtású legyen, valamint a lehető legmagasabb szintű kényelmi felszereltséggel rendelkezzen. Cserébe hajlandóak a technológia felárát megfizetni.