bluuebunny/crossref_metadata_2025 huggingface dataset:
Adolescent Developmental Trajectories of Self-Reported Reward Responsiveness and Inhibitory Control and the Role of Clinical and Neural Predictors
Authors: Mattoni Matthew , Sullivan-Toole Holly , Olino Thomas M
Published: September 2023

Understanding the adolescent development of reward responsiveness and inhibitory control, as well as predictors of this development, is important due to associations with key outcomes such as depression and substance use disorders. However, relatively few studies have examined this development longitudinally, and past findings have been mixed, particularly for self-reported development of reward responsiveness. Here, we examined the longitudinal development of self-reported reward responsiveness and inhibitory control in a sample of over 200 adolescents aged 9-17 across 5 waves. We also examined associations between several clinical and neural measures as predictors of longitudinal trajectories. We found that inhibitory control increased across adolescence. However, contrary to hypotheses and common models of adolescent development, we found that self-reported reward responsiveness decreased across adolescence. These results suggest that within-person changes of experiences of reward responsiveness may not correspond with developmental assumptions built on studies of neural responses to reward. We also found that heightened centrality of a cognitive control functional connectivity hub during a reward task was associated with increased social anhedonia and greater decreases in reward responsiveness trajectories, suggesting a potential risk factor warranting further study. Overall, results conflict with traditional models of adolescent development and highlight the need for increased longitudinal study of subjective experience of reward responsiveness.
To respond or not to respond: The effect of forced and prefer not to answer options in demographic questionnaires
Authors: Santos Henri C. , Mestechkin Rebecca M , Vogt Randi L. , Rosica Daniel , Heck Patrick Ryan , Heydari Pedram , Brown Matt , Rosenbaum Gail , Shermohammed Maheen , Meyer Michelle N. , Chabris Christopher F.
Published: September 2023

Accurately capturing participant’s true demographic characteristics can be difficult when participants are reluctant to share personal information but researchers want a complete dataset. While forced response requirements can ensure complete responses, they can also lead to respondent discomfort, attrition, or dishonesty. One solution is to allow participants the option of selecting “prefer not to answer” as their response. To examine the effect of forced responding and a “prefer not to answer” option on self-reported demographic information in web-based surveys, participants (initial sample n = 12,915, replication sample n = 3,794) across 22 surveys completed a set of demographic questions (e.g., sex, race, education). They were randomly assigned to one of six conditions, varying the presence of the “prefer not to answer” option and whether they were forced to respond, requested to respond, or had no response requirement. The only statistically significant difference observed in both the initial and replication samples was in the distribution of responses to political ideology questions. Across all comparisons, in both the full sample and the replication sample, we found that when a “prefer not to answer” option was available, fewer participants selected “very liberal” and “liberal” and more participants selected “very conservative.” Outside this result, our findings demonstrate that including a "prefer not to answer" option in surveys does not heavily alter the distribution of responses to demographic questions. Researchers, marketers, and policymakers can consider implementing this option to respect participant preferences about disclosing information while collecting valuable data across diverse fields.
Opening the contextual black box: A case for idiographic experience sampling of context for clinical applications
Authors: von Klipstein Lino , Stadel Marie , Bos Fionneke Marijke , Bringmann Laura Francina , Riese Harriette , Servaas Michelle
Published: September 2023

The experience sampling method (ESM) is increasingly used as a clinical tool in mental health care. Currently, ESM studies pay relatively little attention to assessing contextual factors, such as a person’s experience and perception of events, activities, and social interactions. This has been referred to as the 'contextual black box’. However, personalized context information is essential for applications in clinical settings to gain insight in triggering and maintaining factors of psychopathology. Typically, ESM context items are designed for nomothetic research questions, to capture broad factors that are shared across individuals, such as ‘unpleasant events’. We provide an overview of such items and argue that they have limited clinical utility. We instead propose an idiographic approach to ESM context assessment to obtain more specific and personalized information about individual clients. In the current manuscript, we outline three idiographic ESM techniques to context assessment with clinical potential. First, we illustrate qualitative ESM items that prompt clients to fill in text, such as a description of a specific unpleasant event they experienced. Second, we describe personalized response options and self-learning items that ask clients to define personally relevant response categories, such as types of events the client finds unpleasant. Third, we describe personalized ESM items that client and clinician select or formulate together for concepts of interest. We discuss the advantages and disadvantages of the idiographic approach. Additionally, we suggest future directions for clinical research aiming to address the ‘contextual black box’ and enhance the potential of ESM in mental health care.
Reinforcement Learning in Behavior Science and Artificial Intelligence
Authors: Cox David J. , Weil Laura , Farrow Joshua , Jennings Adrienne , Santos Carlos , Sosine Jacob
Published: September 2023

The practical use of the concepts "reinforcement" and "punishment" have evolved in two distinct scientific domains. One domain is the psychological and biological sciences a la behaviorists of the 19th and 20th centuries. The second domain is computer science a la artificial intelligence researchers of the 20th century. Behavior scientists generally focus on understanding how biological organisms do behave as a function of their interaction with the environment. Computer scientists within artificial intelligence generally focus on how artificial agents ought to behave in specific environments to maximize cumulative reward or minimize cumulative punishment. This chapter outlines the unique scientific histories of these two areas of reinforcement learning, the commonalities and differences between these two disciplines, and how researchers might combine knowledge from each area to advance their research agenda.
Reflections on shifting research paradigms
Authors: Sauvé Sarah Anne
Published: September 2023

In this commentary, I use writing as a method of inquiry to work through some issues I am struggling with as I attempt to transition from a positivist research paradigm to a critical research paradigm. I begin with the question of whether I should continue doing research “on” volunteers when I align with the epistemology of doing research “with”. This leads me to think about the ethical considerations at play, whether there is an absolute choice to be made at all, the role of fundamental research, how situating knowledge may be ‘good enough’, how such a shift in paradigms affects student projects and finally that transitions take time. I arrive at a rather pragmatic conclusion, where transitioning from one paradigm to the other cannot happen all at once, and that it perhaps isn’t necessary to disavow everything about positivism but rather find ways to incorporate critical practice into it.
Do Character Strengths-Based Interventions Change Character Strengths? Two Randomized Controlled Intervention Studies
Authors: Gander Fabian , Wagner Lisa , Niemiec Ryan
Published: September 2023

Character strengths-based interventions are effective for increasing well-being. However, whether such interventions also increase character strengths has never been tested. In Study 1, we studied the effects of seven different variants of character strengths-based interventions on well-being, ill-being, and character strengths traits and states (i.e., frequency of behavior during one week). We analyzed data of N = 1,163 participants (82.3% women, aged 18 to 78; Md = 45) who were randomized to seven intervention conditions lasting one week; (1) learning about the VIA classification of character strengths, (2) learning about one's own strengths, using signature strengths (3) in a new way, (4) with a minor challenge, (5) with a larger challenge, (6) for other people, (7) forming a strengths-based habit, or a placebo control condition (early memories). Results showed that using signature strengths in a new way led to increased well-being, social well-being, as well as character strengths states and traits. Forming a strengths-based habit also increased well-being and character strengths states. No effects on ill-being were found. In Study 2, we tested a four-week multi-component program that combined several interventions tested in Study 1 in a sample of N = 254 participants (77.8% women, aged 19 to 87; Md = 42). Compared to a waitlist control group, the intervention condition showed increases in well-being and character strengths states, and reductions in stress and neuroticism. We conclude that character strengths interventions may not only affect well-being but also character strengths states and traits. Our study also confirms that forming habits increases intervention effectiveness.
Characterizing Recent Trends in U.S. Civic Engagement Activity Interdependence and Participant Behavioral Profile Similarity
Authors: Farthing Trevor , Brees Kyle , Schlachter Laura Hanson , Kurz David
Published: September 2023

The umbrella term “civic engagement” covers a wide variety of activities that individuals seeking to better their communities may engage in. The breadth of qualifying activities makes generalizing and statistically comparing top-level trends in civic engagement profiles (i.e., the assemblage of data points describing a given individual’s frequency of participation across the spectrum of civic engagement activities) difficult, as profiles are prone to high dimensionality and substantial variation across data sets, years, and demographic groups. Here, we deploy a combination of exploratory factor analysis and Markov Random Field models to characterize relationships between 17 civic engagement activities reported in the 2021 Current Population Survey Civic Engagement and Volunteering Supplement (AmeriCorps 2023). We identify four factors explaining most civic engagement profile variation: Joining, Advocating, Neighboring, and Informing. Furthermore, we demonstrate that these constructs are linked through conditional dependence of associated activities. We show that conditional dependency structures in civic engagement profiles are ≈2–5 times more likely to be similar if individuals belong to the same generation cohort, hold the same level of education, or share the same gender identity. We found no statistical difference in conditional dependency structure similarity between Caucasian and non-Caucasian groups. This work represents the first time that Markov Random Field models have been used to study patterns of civic engagement, and demonstrates the utility of these methods for between-group statistical comparisons in this field. Ultimately, we provide insights into civic engagement patterns that are invaluable for policy-makers and program administrators seeking to recruit and retain participants.
Gender biases and hate speech: promoters and targets in the Argentinean political context
Authors: Domenech Laia , Pérez Juan Manuel , Rosati German , Kozlowski Diego
Published: September 2023

Hate speech found in social media a place to flourish. In the Argentinean context, new right wing parties have disrupted the political arena, winning the primary elections of 2023. Many of these new right-wing figures grew in popularity due to their use of social media, on a background of increasing political violence. In this article, we use quantitative and qualitative tools to investigate the prevalence of hate speech targeting women politicians and analyze the role of different political affiliations in promoting such discourse. Furthermore, we propose a model that predicts users' political alignments based on their profile descriptions, allowing us to explore the distribution of hate speech among different political orientations. Our results provide a descriptive account of the relationship between hate speech by politicians and other users, and shows that right-wing political figures and supporters are strong emissors of hate speech, while women, especially those from the left-wing are more prone to receive violent content.
The Many Ways to Transparency: A Typology of Topics and Varieties in the Transparency Literature
Authors: Cruz Romero Roberto
Published: September 2023

This article explores a sample of the literature on transparency in the 1984-2020 period through a systematic review. The sample consists of 242 works (articles, books, and book chapters) collected from different academic databases. Latent dirichlet allocation (LDA) probabilistic topic modelling – an unsupervised machine learning approach – is employed in order to classify and construct a typology of topics within the literature. This approach is complemented by a structured overview of the varieties of transparency framework and is aimed at addressing three research questions: a) What analytical approaches are identified in the literature? b) How is transparency conceptualised through such analytical approaches? And, c) where has transparency’s focus been placed in relation to an event-process framework? The findings show unequal methodological approaches, topics, and issues investigated. These insights and the novel approach utilised outline key challenges and opportunities for future transparency research.
Who does “Big Tech” stand for? Conflict between shareholders and executives over the direction of technological change
Authors: Lehdonvirta Vili , Ricucci Rachel
Published: September 2023

Literature on large technology firms conceptualizes the firms as singular agents in service of capital. We problematize this notion by drawing on literature on politics of corporate control, which posits an inherent conflict between capital and management, and propose that technology firms’ shareholders prefer technologies that entail fewer societal externalities than what the companies’ executives prefer. To observe such conflict, we analyse annual general meeting documents of top fifty tech firms, identifying shareholder proxy ballot initiatives aimed at shaping technological development toward less societal risk. Shareholders at Amazon, Apple, Google, Meta, and Microsoft raised concerns over technologies such as AI and cloud computing, in some cases changing the company’s behaviour. Such technology governance shareholder initiatives grew rapidly from 2015 onward to represent a fifth of all initiatives by 2022. We argue that this activism was part of a broader social movement that in the U.S. expressed itself via corporate governance institutions, because opportunities via political institutions were blocked. We conclude that conceptualizing technology firms as a site of contestation helps us to understand how competing interest shape technological transformation. We also contribute to technology governance literature by highlighting corporate democracy as a neglected mechanism of technology company accountability.
*READ**THIS*!! Spam as a Threat for Open Science
Authors: Cohoon Johanna
Published: September 2023

Drawing on multiple sources of qualitative data, I describe a case of open science infrastructure (OSI) abuse. The case illustrates how developers navigated schol- arly values and issues of epistemic and platform legitimacy while battling spam on their open science webapp. Notably, their struggle used precious financial resources and drew attention away from other development tasks like feature expansion. This research makes evident that not only is OSI abuse like spam a financial burden, but it puts scholarly information security—specifically, the integrity of open science content—at risk. However, protecting against such abuse is not a trivial matter; it raises questions of who is responsible for defining and enforcing scholarly values. The urgency of this issue is magnified by OSI’s relationship to public trust in science.
The Problem of Measurements: Fiscal Transparency and Diverging Outcomes
Authors: Cruz Romero Roberto
Published: September 2023

Transparency studies are characterised by critical insights into the contextual determinants, as well as the consequences of open and accountable processes. In the realm of fiscal governance, studies of transparency have focused on a variety of issues, ranging from budget efficiency to investment opportunities. However, since fiscal transparency remains a deeply interdisciplinary field, emphasis on determinants and context-dependency occupy a secondary role in the scholarship. Transparency is taken to be a pre-condition for other governance and development outcomes – most causal studies analyse this directionality, whilst few occupy themselves with the factors mediating transparency. Against this backdrop, we conduct a survey of the literature on fiscal transparency, systematically review a sample of 35 empirical studies, and finally show results of a meta-analysis of the reported effects. The findings support our claim that transparency outcomes depend heavily on the aspects of transparency policies observed and measured, which are not uniform across the literature. We discuss the impacts and point towards further research avenues in the field.
Implementing a singing-based intervention for postpartum depression in Denmark and Romania: A Brief Research Report
Authors: Warran Katey , Smith Calum , Ugron Hanna , Blaga Oana Maria , Ladegaard Nicolai Lund , Carstens Louise Frøkjær , Nicholls Lucy , Burton Alexandra , Zbranca Rarita , Ottow Mikkel , Fancourt Daisy , Fietje Nils
Published: September 2023

Background: There is a burgeoning evidence-base that demonstrates the positive impact of the arts on our health and wellbeing. However, very few studies have focused on how to optimise the implementation of these activities for different sociocultural contexts. This is an essential focus in view of the increasing interest in scaling effective arts interventions as part of public health strategies.Aim: Using the case study of a singing for post-partum depression (PPD) intervention, this brief research report explores implementation of an arts and health intervention that has been successful in the United Kingdom (‘Music and Motherhood’) for the new contexts of Silkeborg (Denmark) and Cluj (Romania).Methods: Data was collected from participants at all levels of the implementation structure including at local and management levels (e.g., new mothers with symptoms of PPD, singing leads, in-country project managers, healthcare staff, referrers, study team members). The study draws on qualitative implementation data to explore participant experiences, including 1-2-1 interviews, written testimonies, meeting minutes, ethnographic researcher reflections and focus groups, including data from 54 participants in total.Results and conclusion: We explore implementation and adaptation across four key themes: 1) Acceptability and feasibility of the singing intervention; 2) Barriers and enablers; 3) Adoption and sustainability of the singing programme; and 4) Broader contextual factors affecting implementation and sustainability. Taken together, the themes demonstrate that arts interventions need to be adapted in culturally sensitive ways by stakeholders who have local knowledge of their environments. This research serves as an informative foundation for use by other researchers that aim to expand the reach and impact of arts-based interventions.
Reflections for a Radical Transparency: An Analytical Framework
Authors: Cruz Romero Roberto
Published: September 2023

Transparency has a long-standing tradition in Western philosophical and political thought, directly linked with the liberal tradition of politics and economics. This article problematises the conceptual antecedents substantiating the (neo)liberal narrative of transparency, whilst pointing to the current characteristics of such narrative. In response, the article focuses on the democratic foundations that foster an inclusive and participatory body of deliberation. The article elaborates a critique of transparency and re-conceptualises it from a radical perspective, presenting a framework for a radical understanding of transparency as an analytical toolbox determined by four major dimensions: a) a collective perspective, grounded on social action, b) a relational nature, c) a focus on the contextual determinants and processes, and d) a structure of translational operations in which to function.
Regional Potential for Community Welfare Development in Sodo Village, Gunung Kidul
Authors: Idawijayanti Tri , Suhendro Suhendro , Sumardiyana Sumardiyana
Published: September 2023

Sodo Village contains physical and non-physical potential that can be developed, albeit this potential is limited or constrained in actuality. In 2021, 74% of the population in Sodo village were impoverished. The goal of this research is to develop the region's potential through community empowerment programs. This study employed descriptive qualitative research methodologies, including data inventory on prospective physical and non-physical regions, spatial analysis, and problem tree analysis. The following issues arise in the Sodo Village: limited physical potential, ineffective management of MSMEs potential, and tourist potential. Participatory community empowerment initiatives are used to develop regional potential.
Quality of Regulatory Pond Development Plan Documents for Barabai Flood Control Against Mandatory LoadsLand Acquisition Planning Document
Authors: Nur Amrin Reza
Published: September 2023

The implementation of land acquisition for the construction of the Barabai flood management pond has been completed successfully and is regarded as a success. One of the factors influencing the success of its execution is land acquisition planning, as stated in the Land Acquisition Planning Document (DPPT). The goal of this research was to assess the quality of the mandatory cargo in the Regulatory Pond Development Plan Document for Flood Control of the Barabai River for the Fiscal Year 2021. The quality of the mandatory cargo for the DPPT is determined using a qualitative technique with descriptive analysis in accordance with Ministerial Regulation Spatial Planning (ATR) /Head of the National Land Agency (BPN) No. 19 of 2021. The document was recognized and examined based on the regulation's mandatory content. Document studies were conducted to acquire data by studying the contents of the DPPT. The study revealed that there are 38 descriptions that must be met in order to create the DPPT. A total of 29 descriptions in the planning document have been thoroughly examined in their analysis, while nine descriptions require further discussion in the document. The presence of more favorable than bad descriptors in the DPPT implies that the stages of land acquisition planning and implementation are in sync. The presence of more favorable than bad descriptors in the DPPT implies that the stages of land acquisition planning and implementation are in sync. Mean¬whi¬le, the nine descriptors must be examined in greater depth in the document. The presence of more favorable than bad descriptors in the DPPT implies that the stages of land acquisition planning and implementation are in sync.
The Impact of Normalization of Batang Agam Watershed in Payakumbuh City
Authors: Putri Warseno Diyas , Wulan Diah Retno
Published: September 2023

Watershed normalization of Batang Agam was initiated in 2015 and continued until 2022 with a substantial budget allocation. But what has been the extent of its impact? Furthermore, it is essential to explore the alignment between the Detailed Spatial Plan (RDTR) of Payakumbuh City and the actual land acquisition process for normalization in three neighborhoods: Pakan Sinayan, Tanjung Pauh, and Tanjunggadang Sungai Pinago located in West Payakumbuh Subdistrict. This qualitative research, conducted through observation and surveys, delves into the implementation of normalization and the subsequent impacts it has caused. Normalization can be successful due to the support from various potential factors, including legal regulations, stakeholder collaboration, adequate funding, and community participation. Normalization brings about positive impacts across environmental, social, and economic aspects. However, it turns out that normalization also has negative impacts, such as natural responses to changes and physical developments, as well as various community activities that lack responsiveness to environmental sustainability.
Advancing Sustainable Hydrogen Production: Methods, Challenges, and Opportunities
Authors: Bhagat Subita
Published: September 2023

The transition to sustainable and low-carbon energy sources has become a pressing global priority due to the escalating concerns surrounding climate change and the depletion of finite fossil fuel reserves. Green hydrogen, produced through the process of water electrolysis using renewable energy sources, has emerged as a promising solution to decarbonize various sectors, such as transportation, industry, and power generation. This critical analysis aims to explore the mechanisms of green hydrogen energy, its potential benefits, and the challenges associated with its widespread adoption. Through an examination of the current state of green hydrogen technology, policy frameworks, and economic considerations, this analysis contributes to a comprehensive understanding of the role that green hydrogen can play in shaping a sustainable energy future.
Empowering Karnataka: e-Governance and Transformative Public Administration
Authors: Begum Gousia
Published: September 2023

The e-governance services in Karnataka are emphasized in this study. Information and communication technologies (ICTs) are used in e-governance to improve governmental operations and services, efficiency, transparency, and accountability. Offering citizens internet services involves digitizing government activities. Karnataka scored 5.11 on the Good Governance Index in 2020–21 compared to 5.10 in 2019–20. The Department of Personnel & Administrative Reforms, a unique e-governance Division in Karnataka, was established in 2003 to hasten the adoption of IT-enabled governance procedures for increased administrative efficiency and transparency. Several national e-governance and e-governance projects are being started and carried out by the Karnataka government to enhance the delivery of public services. Digi locker, e-janma, e-Office, Direct Benefit Transfer, Kutumba, etc., are a few examples of efforts. These programs and services greatly impact how accessible and good services citizens can access. These all indicate good governance administration in the state.
Exact Green's functions for localized irreversible potentials
Authors: Castro-Alatorre Jorge Israel , Condado David , Sadurni Emerson
Published: September 2023

We study the quantum-mechanical problem of scattering caused by a localized obstacle that breaks spatial and temporal reversibility. Accordingly, we follow Maxwell's prescription to achieve a violation of the second law of thermodynamics by means of a momentum-dependent interaction in the Hamiltonian, resulting in what is known as Maxwell's demon. We obtain the energy-dependent Green's function analytically, as well as its meromorphic structure. The poles lead directly to the solution of the evolution problem, in the spirit of M. Moshinsky's work published in the 1950s. Symmetric initial conditions are evolved in this way, showing important differences between classical and wave-like irreversibility in terms of collapses and revivals of wave packets. Our setting can be generalized to other wave operators, e.g. electromagnetic cavities in a classical regime.
The linear and the angular momentum stored in a distribution of charges in a magnetic field
Authors: Torres del Castillo Gerardo Francisco
Published: September 2023

We show that it is possible to define, e.g., the z-component of the linear momentum of the system formed by a charged particle and a magnetic field if and only if the magnetic field is invariant under translations along the z-axis. Similarly, it is possible to define the z-component of the angular momentum of the system formed by a charged particle and a magnetic field if and only if the magnetic field is invariant under rotations about the z-axis.
Stable identification of sources located on the cerebral cortex from EEG over the scalp
Authors: Arias Cruz José Ángel , Morín Castillo María Monserrat , Oliveros Oliveros José Jacobo , Gutiérrez Arias José Eligio Moisés
Published: September 2023

In this work, we present a stable algorithm for the inverse problem of identifying cortical sources from electroencephalographic measurements on the scalp. This inverse problem is ill-posed due to the numerical instability it presents, i.e., small changes in the measurements can produce large variations in the location of the sources. A boundary value problem is used to find correlations between the sources and measurements. In the case in which the head is modeled using two concentric spheres. We use spherical harmonics to find the solution to the inverse source cortical problem. To handle the numerical instability of this problem, we use the Tikhonov regularization method and a cut-off of the harmonic expansion series. From numerical tests, we found these parameters with which we get good approximations. Finally, we illustrate the algorithm proposed with synthetic examples
Generalized equations and their solutions in the (1/2,0)+(0,1/2) representations of the Lorentz group
Authors: Cázares J. A. , Dvoeglazov Valeriy
Published: September 2023

We present explicit examples of generalizations in relativistic quantum mechanics. First of all, we discuss the generalized spin-1/2 equations for neutrinos. They have been obtained by means of the Gersten-Sakurai method for derivations of arbitrary-spin relativistic equations. Possible physical consequences are discussed. Next, it is easy to check that both Dirac algebraic equations Det(ˆp − m) = 0 and Det(ˆp + m) = 0 for u− and v− 4-spinors have solutions with p0 = ±Ep = ± p p2 + m2. The same is true for higher-spin equations. Meanwhile, every book considers the equality p0 = Ep for both u− and v− spinors of the (1/2, 0) ⊕ (0, 1/2) representation, thus applying the DiracFeynman-Stueckelberg procedure for elimination of the negative-energy solutions. The recent Ziino works (and, independently, the articles of several others) show that the Fock space can be doubled. We re-consider this possibility on the quantum field level for both S = 1/2 and higher spin particles. The third example is: we postulate the non-commutativity of 4-momenta, and we derive the mass splitting in the Dirac equation. The applications are discussed.
Solid state transformations from spheres to polyhedrons in hollow Fe spheres
Authors: Guerrero Caro Centli Tzentzangari , Figueroa I. A. , Verduzco J. A. , Pérez L. , Bejar L. , Hernández O. , Alfonso I.
Published: September 2023

The present work analyzes the sintering conditions for ∼ 3 mm inner diameter hollow iron spheres, sintered for manufacturing composite structures. Optimal sintering variables were investigated modifying temperature from 700 to 1200◦C, while times were between 1 and 3 h. Results showed that packing of the spheres increased with time and temperature: at 700◦C sintering was not enough; at temperatures from 800◦ to 1000◦C spheres were well sintered with porosity between them; while at higher temperatures were completely packed. Densities ranged from 0.6 gcm−3 to a maximum of 1.1 gcm−3 for spheres 100% packed, where it was observed a sphere-to-polyhedron shape transformation, with maximum values of penetration (0.39 mm) and sintering neck width (1.42 mm). Complete packing of the Fe particles of the sphere walls was also observed. The use of Design of Experiments made possible to establish correlations between sintering variables and characteristics such as neck width, penetration, porosity and packing. These results could be used as a starting point for the adequate selection of the sintering conditions of hollow Fe spheres for manufacturing hollow composite structures, taking into account not only the characteristics of the sintered hollow spheres but also of the Fe particles forming their walls.
Structural, electronic, and magnetic properties of ZnTe doped with transition metal Mn
Authors: Brach Brach , Bahmad L. , Benyoussef S.
Published: September 2023

In this article, we examine the structure, electronic, optical, and magnetic properties of ZnTe before and after doping with the transition metal Mn. The ab initio calculations of this compound were performed using the full potential linearized extended full potential planar waveform (FP-LAPW) in the context of density functional theory (DFT) implemented in the Wien2K code. The potential for exchange and correlation was addressed by the GGA approximation. The electronic properties show that the ZnTe material exhibits semiconductor behavior before doping and it becomes semimetal after doping. The findings attained by Monte Carlo simulations display that the ZnMnTe material goes from an antiferromagnetic phase to the paramagnetic phase at the Neel temperature value TN =159.31 K.
Elaboration and characterization of pure ZnO, Ag:ZnO and Ag-Fe:ZnO thin films: Effect of Ag and Ag-Fe doping on ZnO physical properties
Authors: Lekoui Fouaz , Hassani Salim , Garoudja Elyes , Amrani Rachid , Filali Walid , Sifi Ouahid , Oussalah Slimane
Published: September 2023

Pure ZnO, Ag doped ZnO and Ag-Fe co-doped ZnOwere preparedusing thermal evaporation.  XRD analysis confirms that all layers present a hexagonal wurtzite structure; however, there is a small shift in the peaks position due to thedistortion of the film’s lattice. Scanning Electron Microscopy (SEM) analysis reveals the morphological variation of the film’s surfaces due to the doping. Pure ZnO and Ag:ZnO films have a nanostructured surface, however, Ag-Fe:ZnO films showed a smooth surface without any nanoparticles. Raman analysis showed the presence of A1(LO), E2(high) andlocal vibrational modes (LVMs) for all layers. Ultraviolet–visible spectroscopy (UV-VIS) analysis shows that the films have a good transparency and the bandgapdecreases with ZnO doping from 3.80 eVto 3.78 eV and 3.70 eV,for pure ZnO, Ag:ZnO and Ag-Fe:ZnO films, respectively. The electrical properties confirm the semiconductor nature of ZnO films with a resistivity around 1.4 Ω.cm, and with Ag and Ag-Fe doping, the films behave like conductors with 1.4´10-4Ω.cm and 1.4´10-3Ω.cm, respectively. These results make the Ag:ZnO and Ag-Fe ZnO thin films good materials for photovoltaic application.
Hubbard's parameter influence on Ba2GdReO6 properties, a promising ferromagnetic double Pérovskite oxide for thermoelectric applications
Authors: Bouchentouf Idriss Y. , Bouadjemi B. , Matougui M. , Houari Mohammed , Lantri T. , Haid S. , Bentata S.
Published: September 2023

In this paper, an exhaustive investigation was carried out on the compound double Perovskite Ba2GdReO6 including its structural, electronic, magnetic and thermoelectric properties. This study is based on the density functional theory (DFT) and more explicitly on the full potential linearized augmented plane wave (FP-LAPW), in the context of different approximations as exchange and correlation potential such as: The generalized gradient approximation (GGA) and its corollary the Becke – Johnson approach modified by Trans-Blaha (TB - mBJ) for a better approximation of the gap, and the GGA + U approach (where U is the Hubbard correction term). After an analysis of the results obtained, it turns out that the double perovskite material Ba2GdReO6 is a ferromagnetic material and has a half-metallic character, moreover, this compound has an integral magnetic moment of 9µB, which is in accordance with the rule of Slater-Pauling. From the study of the thermoelectric properties consisting in plotting curves of different parameters such as: the Seebeck coefficient (S), electrical conductivity per relaxation time (σ/τ), the electronic thermal conductivity per relaxation time ( /τ)  and the merit factor (ZT) as a function of temperature, based on the GGA+U approximation, which is most suitable for the study of this compound, it emerges that the double pérovskite Ba2GdReO6 presents thermoelectric performances in medium to high temperature ranges, in view of the high values ​​of the Seebeck coefficient and those of the electrical conductivity as well as a value close to unity for the merit factor, therefore, this compound can be used for thermoelectric applications in this range of temperatures (medium to high).
Circadian cycles: A time-series approach
Authors: García-Iglesias Lorena , Rivera Ana Leonor , Fossion Rubén
Published: September 2023

The extraction of circadian cycles from experimental data can be interpreted as a specific case of time-series or signal analysis, but chrono- biology and time-series analysis appear to have developed according to separate paths. Whereas some techniques such as continuous (CWT) and discrete wavelet analysis (DWT) are used frequently in rhythmobiology, other specialized methdos such as digital filters, nonlinear mode decomposition (NMD), singular spectrum analysis (SSA), empirical mode decomposition (EMD), ensemble empirical mode decomposition (EEMD) and complete ensemble empirical model decomposition with adaptive noise (CEEMDAN) have only occasionally been applied. No studies are available that compare the applicability between a wide variety of different methods or for different variables, and this is the purpose of the present contribution. These methods improve the goodness-of-fit of the circadian cycle with respect to the standard approach of cosinor analysis. They have the additional advantage of being able to quantify the day-to-day variability of the circadian parameters of mesor, amplitude, period and acrophase around their average values, with potential clinical applications to distinguish between healthy and unhealthy populations. Finally, the circadian parameters are interpreted within the context of homeostatic regulation with distinctive statistics for regulated and effector variables.
A comprehensive analysis of 26Mg(3H,2H)27Mg reaction at 36 MeV
Authors: Aygun Murat , Aygün Zeynep , Karaali Nazım
Published: September 2023

The angular distribution of the 26Mg(3H,2H)27Mg reaction at 36 MeV incident energy is reanalyzed by using the distorted wave Born approximation (DWBA) method. Four forms of the optical model potentials such as temperature dependent and temperature independent density distributions, different nuclear potentials, and different nucleon-nucleon interactionsare used to determine the effect on the 26Mg(3H,2H)27Mg transfer reaction of the entrance channel. These analyses display the similarities and differences of all the approaches which are discussed in this work, and provide alternative density, alternative nuclear potential and alternative nucleon-nucleon interactions.
Standard molar enthalpies of formation of 3-methylglutaric and 3,3-dimethylglutaric anhydrides
Authors: García-Castro Miguel Angel , Díaz-Sánchez Fausto , Galicia-Aguilar José Alberto , Vidal-Robles Esmeralda
Published: September 2023

In this research, both the standard molar enthalpy of formation in the crystalline phase and in the gas phase of 3-methylglutaric anhydride was calculated from experimental data. The temperature and enthalpy of fusion, as well as the molar heat capacity in solid phase was calculated by differential scanning calorimetry; the molar enthalpy of sublimation at 298.15 K by the Knudsen effusion method, the molar enthalpy of vaporization at 298.15 K by thermogravimetric analysis, and the standard massic combustion energy by combustion adiabatic calorimetry. Since 3,3-dimethylglutaric anhydride presented crystal transitions (with endothermic points at 352.76 K, 356.98 K and 397.15 K), some of its thermochemical properties were estimated from the functional group-contribution methods proposed by Benson, Gani and Naef and from application of Machine Learning based models.
NUEVOS ASPECTOS GEOLÓGICO-MINEROS SOBRE EL YACIMIENTO DE BOLIVIANITA ANAHÍ, UBICADO EN EL ORIENTE BOLIVIANO
Authors:   Behre Dolbear Inc. Calle Aruma 10, Urbari, Santa Cruz, Bolivia, Biste Michael , Burgoa Andrés ,   Minerales y Metales del Oriente S.R.L., Santa Cruz, Bolivia
Published: September 2023

A recent investigation of the bolivianita Anahi mine reveals that the mineralization is the product of intracratonic thermal fluids which migrated along a deep lineament and through a basin with an Upper Proterozoic sediment filling. The mineralization is hosted by Cambrian limestone and related to a collapse structure. It occurs within caverns of dissolution, fractures and open spaces which were formed by karstic processes and circulation of thermal fluids. The different types of quartz precipitated by mixing of ascendant thermal fluids enriched in silica with descendent cold meteoric water close to the paleo-surface. The geometry of the mineralizacion follows the subterraneous morphology of the paleo-karst. The amorphous silica precipitated close or on top of the paleo-aquifer as opal-chalcedony with some disseminated pyrite. The crystalline gem quartz grew below this sinter cap. The exact age of the mineralization is unknown. But it is most likely that the process of selective dissolution of the Cambrian limestone started after its consolidation during a phase of continental uplift of the regolith under humid climate and continues until today. The migration of thermal fluids was probably induced by Upper Cretaceous alkaline igneous activity.
Crude, anonymous, partisan, sectoral and anti-elitist. Electoral disinformation in Spain (2019-2022)
Authors: Lava-Santos David , José Gamir-Ríos , Llorca-Abad Germán
Published: September 2023

The aim of this research is to analyse the electoral misinformation circulating in the public space as a whole during campaign periods. The sample is made up of 481 rebuttals published by the verification media Maldita.es, Newtral, Efe Verifica and Verificat in relation to 409 pieces of misinformation during the six campaigns carried out in Spain during the political cycle that began in the general election in November 2019, which also includes the regional elections held in Galicia, the Basque Country, Catalonia, Madrid, Castilla y León, and Andalusia. The methodology consists of a content analysis of 13 variables articulated around five dimensions of study: scope of generation and/or dissemination, format, epistemological authority, prominence, theme, and discourse. The results show: (1) the predominance of the citizen space of social networks as a field for the generation and distribution of electoral misinformation; (2) the crude construction of misinformation, with a preponderance of text as a misinformation element accompanied by multimedia resources shared without alteration; (3) the pre-eminence of problematic materials disseminated anonymously and without citing sources and those actually distributed by the political class, especially the right wing; (4) the majority role of the political class, particularly the left, generally characterised in a negative manner, although the political class of the right receives a greater proportion of positive treatment; (5) the abundance of sectoral and ideological themes, with a prominent presence of attacking elites as the predominant populist discursive feature; and (6) the profusion of direct attacks on political rivals, especially related to ideological and management issues.
ІННОВАЦІЙНІ ТРАНСФОРМАЦІЇ БІБЛІОТЕК ЗАКЛАДІВ ВИЩОЇ ОСВІТИ
Authors: Барабаш Вікторія , Глєбова Людмила , Коломієць Олена
Published: September 2023

У статті розглянуто процеси еволюції діяльності бібліотек закладів вищої освіти під впливом інноваційних трансформацій сьогодення. Формування в бібліотеках ЗВО відкритого інформаційного простору, надання широкого доступу до різноманітної інформації, комплексне поєднання її типів і видів має сприяти створенню гнучкої інфраструктури інформаційного забезпечення діяльності закладу вищої освіти, задоволенню інформаційних потреб науково-педагогічних працівників та здобувачів вищої освіти, активізації сучасного спектру сервісів і послуг бібліотеки як культурно-освітнього центру.Представлено сучасні автоматизовані бібліотечно-інформаційні системи (АБІС), які використовують у своїй діяльності бібліотечні установи закладів вищої освіти України. Визначено їх роль як надійного інструмента  створення електронних ресурсів самих бібліотек, а також ефективного засобу підтримки навчальної та наукової діяльності ЗВО. Проаналізовано бібліотечно-інформаційні ресурси бібліотеки Центральноукраїнського національного технічного університету. Акцентовано увагу на запровадженні в університетській бібліотеці ЦНТУ автоматичної бібліотечної системи відкритого доступу, призначеної для підтримки традиційних бібліотечних технологічних процесів. Визначено функціональні можливості цієї системи, її переваги та недоліки, проблеми адаптації та впровадження. Розроблено пропозиції щодо удосконалення інформування користувачів бібліотеки в умовах функціонування автоматизованих інформаційно-пошукових систем, а також окреслено перспективи розвитку бібліотеки в умовах подальшої інформатизації суспільства.
СИСТЕМИ ГАЛУЗЕВОЇ ДОКУМЕНТАЦІЇ В СТРУКТУРІ ДОКУМЕНТОЗНАВСТВА: СТАН І ПЕРСПЕКТИВИ ДОСЛІДЖЕНЬ
Authors: Палеха Юрій , Алєксєєнко Катерина
Published: September 2023

Диференціація систем документації відповідно до функцій управління та галузевої його належності дозволяє здійснити поділ систем службової документації на дві основні складові: інфраструктурну та галузеву, які відображають функціонування суб’єкта господарювання як на рівні організації, так і на рівні галузі в інформаційному просторі. Дослідженням зазначених систем документації опікується спеціальне документознавство, місце якого, незважаючи на відмінність концепцій провідних науковців, в структурі науки про документ чітко визначено.  В статті наведено авторський погляд на блокову структуру систем галузевої документації з врахуванням останніх публікацій науковців. Деталізовано призначення тієї чи іншої системи галузевої документації, кількість яких обумовлена кількістю напрямів суспільної діяльності, виникненням нових її напрямів, що супроводжується появою нових видів документації. Запропоновано поділ блоків систем галузевої документації на підблоки, системи та підсистеми документації. На підставі розробленої автором кваліфікаційної схеми блоків систем галузевої документації здійснено кількісний та якісний аналіз захищених дисертацій документознавчого спрямування на здобуття відповідного наукового ступеня. З метою консолідації зусиль науковців в напрямі ефективного розвитку галузевого документознавства, раціонального вибору та подальшої розробки дисертаційних тем за фахом, запропонована необхідність впорядкування й активізації процесів підготовки та захисту актуальних дисертацій з систем галузевої документації