bluuebunny/crossref_metadata_2025 huggingface dataset:
MAPPING WHISTLEBLOWING THROUGH THE ROLE OF WHISTLEBLOWERS: A BIBLIOMETRIC ANALYSIS
Authors: Pinasty Raisha Jihad Denia , Setyorini Christina Tri
Published: September 2024

This study explores whistleblowing's role in addressing fraud and corruption in Indonesia. Using bibliometric analysis, we examined publication trends, document types, subject areas, influential authors, and critical topics in whistleblowing research from 2014 to 2023. Data were collected from the Scopus database, analyzed with the Publish or Perish application, and visualized using a VOS viewer. The results show that articles dominate the field, making up 80.25% of total citations. The findings have significant implications for policymakers, practitioners, and academics. It is a beneficial overview of whistleblowing research, but it only needs to be better and measured based on these findings. These insights do not offer actionable guidelines or strategies but work as, at most, a compass map of existing research trends and areas of interest in whistleblowing discussions. However, the lessons could form a valuable database for anyone to understand the current status of the research ecosystem. However, more than insights alone need to be directly translated into practical designs or applications like building up a system for whistleblowing and anti-fraud, et cetera, which would require further (more applied) studies.
Understanding Entrepreneurial Commitment: A Test of Side-Bet Theory
Authors: Gabay-Mariani Laëtita , Dubard Barbosa Saulo
Published: September 2024

This paper contributes to the burgeoning literature on entrepreneurial commitment by providing a first empirical investigation of Howard Becker’s side-bet theory in the context of nascent entrepreneurship. We investigate how different forms of commitment relate to both entrepreneurial behavior and various side-bet categories: satisfying conditions, non-work concerns, others’ expectations, impersonal bureaucratic arrangements, perceived lack of alternatives, individual adjustments to social positions, and self-presentation concerns. We collected data from a representative sample (n = 242) of individuals granted with the French national student-entrepreneur status (NSES). Results froms hierarchical linear regressions reveal different patterns of side bets associated with entrepreneurial commitment, depending on its nature (value-based or exchange-based) and on its focus (the project or the profession). Our study (1) extends side-bet theory to the field of entrepreneurship and (2) improves understanding of factors associated with commitment during the volitional phase of the entrepreneurial process.
From Liberating Leader to Shared Leadership: A Process of Role Distribution
Authors: Poli Émilie , Gabriel Lucie
Published: September 2024

A liberated company is an emerging concept, which is based on trust and autonomy and is radically opposed to hierarchical principles. The empirical literature describes liberation as a complex process of cultural and organizational transformation, wherein managerial functions are questioned or even eliminated, and blind spots are a source of numerous pitfalls. Against this backdrop, the central issue of transforming leadership, and the roles it entails, remains underexplored in liberated companies, whereas reflections are primarily focused on the liberating leader. Using a single case study and a processual, multilevel approach to liberation, this study analyzes the evolution of key leadership roles at the individual (supporting), collective (catalyst), and organizational (driving) levels. The results show that the distribution and sharing of leadership roles is an evolutionary and dynamic process rather than a tipping point and question the opportunities and limits of role distribution at different stages of the process.
Análisis de la competitividad agroexportadora de palta, uva y arándano: estrategias y desafíos
Authors: Abanto Duran Roger Francisco , Cabrera Sernaque Flor Rosmery
Published: September 2024

El estudio aborda la competitividad agroexportadora de palta, uva y arándano en Perú, centrado en identificar los principales desafíos y estrategias para mejorar la posición de estos productos en el mercado internacional. El crecimiento agrícola ha impulsado a Perú como un actor relevante globalmente, con la innovación tecnológica y la mejora de la infraestructura rural como factores clave para aumentar la productividad y acceso a mercados internacionales. Utilizando métodos estadísticos como ANOVA y análisis de covarianza, el estudio analiza datos de exportación de 2010 a 2023, demostrando que factores como el precio promedio de exportación y el volumen total exportado influencian significativamente las tendencias de exportación. Los resultados muestran variabilidad significativa entre diferentes mercados, con recomendaciones específicas para mejorar la competitividad mediante la adopción de estándares internacionales y el aprovechamiento de acuerdos comerciales. Las conclusiones sugieren que la capacidad de adaptación a normas internacionales y la innovación son esenciales para mantener y aumentar la competitividad en un mercado globalizado.
Trazabilidad en la cadena de suministro de empresas de alimentos en Latinoamérica
Authors: Rodríguez León André , Quevedo Olaya Jhonsson Luis
Published: September 2024

La implementación de sistemas de trazabilidad en la cadena de suministro de alimentos en Latinoamérica es la base para asegurar la inocuidad alimentaria y fortalecer la confianza del consumidor. Esta investigación tiene como objetivo analizar el estado actual de los sistemas de trazabilidad en las empresas alimentarias de Latinoamérica identificando dificultades y proponiendo estrategias para mejorar su implementación. Se realizó una revisión de literatura evaluando 23 artículos de diversas bases de datos académicas (Scopus, Web of Science, ProQuest, Google Scholar y SciELO), con una muestra total de 88 trabajos publicados entre 2016 y 2024. Los estudios presentan un 28 % de investigaciones aplicadas y 72 % de investigaciones básicas, utilizando metodologías descriptivas (52%), exploratorias (36%) y explicativas (12%). Los resultados revelan que tecnologías como blockchain, IoT y gemelos digitales mejoran significativamente la trazabilidad y transparencia en la cadena de suministro, permitiendo una mejor gestión y reduciendo pérdidas. Sin embargo, desafíos como la falta de infraestructura y la necesidad de capacitación técnica limitan su adopción. Se concluye que, aunque las tecnologías emergentes pueden optimizar la cadena de suministro, es esencial abordar estos desafíos para maximizar sus beneficios y promover un sistema alimentario más eficiente y sostenible en la región.
Relación entre el nivel de conocimientos sobre fiebre tifoidea y medidas preventivas en los pobladores del distrito de Chontalí, 2023
Authors: Silva Galvez Keili , Vargas Diaz Greici Mireli , Carbajal García Luis Omar
Published: September 2024

En la investigación, se estableció como objetivo general determinar la relación existente entre el nivel de conocimiento sobre fiebre tifoidea y las medidas preventivas en los pobladores del distrito de Chontalí, 2023; siendo la investigación básica, con enfoque cuantitativo, de alcance correlacional, con diseño no experimental transversal; dirigida a una muestra de 147 habitantes a quienes se les aplicó un cuestionario para medir las variables. Como resultado se obtuvo que el nivel de conocimientos de la fiebre tifoidea se encuentra en nivel medio con 72.10%, el nivel de medidas preventivas tiene nivel medio con 76.20%, relación significativa entre los conocimientos sobre fiebre tifoidea y las dimensiones de medias preventivas en: atención primaria r=0,669, atención secundaria r=0,587 y atención terciaria r=0,534 con valor de significancia para todos los casos de p = 0,000 < 0,01 (1%); así como relación entre las variables de r=0,756, con valor p = 0,000 < 0,01. Concluyendo que existe relación entre las variables por lo que se requiere mayor atención de parte de las autoridades del sector salud para sensibilizar a la población y mejorar la atención de esta enfermedad.
Diseño y análisis dinámico de un edificio multifamiliar de 4 niveles sin sótano en la Provincia de Chanchamayo
Authors: Rupay Vargas Marcos Josue , Parra Lavado Regner Raul , Hadi Mohamed Mohamed Mehdi , Lopez Yarango Jorge Santiago
Published: September 2024

In the present investigation, the design of a 4-story building without a basement located in the Province of Chanchamayo of Peru was carried out, intended for a multi-family home made up of structural elements such as columns, beams, and plates, which each one was designed and modeled under the Peruvian Load Regulations E. 020, Earthquake-resistant Design E. 030, Reinforced Concrete E. 060, Masonry E. 070 and General Design Conditions A. 010. The use of these Standards is established in the National Building Regulations that allowed compliance with the objective of designing and carrying out the Dynamic Analysis of the Building under the Earthquake methodology, which is based on the Load factor and resistance design method. Modeling was carried out with the help of ETABS software to obtain results necessary for the design and analysis of the structure. Finally, it was obtained that the building will use the structural system for structural walls, which has a basic reduction coefficient equal to 6 and it is concluded that the methodology used allows guaranteeing the safety, functionality and quality service of a building.
Manejo de Catéter Venoso Central por el Personal de Enfermería en las Unidades de Cuidados Intensivos
Authors: Amaguaya Palmay Nathaly Silvana , García García Ruth , Sulbarán Brito Migdalia Janeth , Vargas Lamiña Jennyfer Estefanía
Published: September 2024

Una de las acciones imprescindible en la unidad de cuidados intensivos (UCI), es manejar adecuadamente el Catéter Venoso Central (CVC) sea este colocado en el paciente por fines terapéuticos o diagnósticos, por ello el personal de enfermería necesita conocer el manejo correcto de este, que va desde su inserción hasta su retiro con medidas de asepsia y antisepsia para evitar las complicaciones como la infección al torrente sanguíneo, el articulo tiene como objetivo determinar las causas del manejo inadecuado del CVC por el personal de enfermería en la UCI. Como materiales y métodos se empleó un enfoque cualitativo, exploratorio, descriptivo y analítico, se investigó estudios del 2020 al 2024. Durante la investigación se encontraron 25 artículos de relevancia obteniendo como resultados, principales causas de manejo inadecuado la falta de medidas de asepsia al momento de la inserción del dispositivo, durante el mantenimiento falta de vigilancia del catéter, piel, medidas de bioseguridad, previo a la colocación del dispositivo, falta de conocimiento por el personal, exceso de confianza del personal en las normas básicas diarias de asepsia y tiempo que transcurre el paciente con el dispositivo, teniendo como la principal consecuencia la infección causada por bacterias, la investigación mostro las siguientes conclusiones: el personal de enfermería es único responsable del manejo del CVC su adecuado manejo evita múltiples complicaciones, recomendando utilizar medidas de  bioseguridad, vigilancia, asepsia y antisepsia, antes durante y después de la inserción del dispositivo.
Análisis de la Alimentación de los Adultos Mayores y su Influencia en las Enfermedades Crónico no Transmisibles
Authors: Sagñay Llinin Gloria Susana , Ocaña Noriega José Ramiro
Published: September 2024

A nivel mundial una de las causantes de muertes se encuentra relacionada con las enfermedades crónicas no transmisibles (ECNT). Muchas de estas patologías pueden prevenirse al reducir o controlar factores de riesgos comunes, tales como los hábitos alimenticios inadecuados, que incluyen el consumo de alimentos altos en grasas, bebidas azucaradas y productos procesados con elevado contenido de sodio. Asimismo, el sedentarismo, junto con el consumo de tabaco y alcohol, impacta gravemente en la salud integral de los adultos mayores, incrementando las tasas de morbilidad y mortalidad. Ante la alta prevalencia de ECNT en los ancianos del CAIAM Guano, surge la necesidad urgente de implementar un proyecto de intervención orientado a analizar los hábitos alimentarios de este grupo y su influencia en ECNT dentro del Centro Gerontológico de Guano. La metodología empleada será de tipo correlacional, descriptiva y transversal, mediante la aplicación de encuestas a través de cuestionarios para la recolección de datos. La población del estudio estará conformada por 20 personas del CAIAM Guano. Se prevé que los resultados mejoren la nutrición de los participantes, contribuyendo así a una mejor salud y calidad de vida.
Rediseño de Puestos de trabajo Orientado a Criterios Ergonómicos Generales. Una Revisión Bibliográfica
Authors: Sánchez Ortega Jenny , Chérrez Sandoval Henry Paúl , Barriga Gavilanes Mónica , Urquizo Flores Geomara Katherine
Published: September 2024

La ergonomía, es una disciplina que estudia la relación entre el entorno laboral y los trabajadores, así como la interrelación entre los procesos realizados y los riesgos ergonómicos del trabajo. Este estudio tuvo como objetivo realizar una revisión bibliográfica sobre el rediseño de puestos de trabajo, orientado a criterios ergonómicos generales. Se llevó a cabo una búsqueda de artículos tanto en inglés como español de los años 2018 al 2023, tanto en inglés como español. Como resultado principal se localizaron 25 publicaciones de relevancia, que permitieron corroborar que entre los  criterios ergonómicos generales para el rediseño de un puesto de trabajo, se aprecia la valoración del riego ergonómico del trabajador al efectuar la tarea, las condiciones disergonómicas del lugar, las características de la tarea y los efectos negativos en la salud del colaborador, debido a las posturas forzadas, el sobresfuerzo, la carga de trabajo, el trabajo repetitivo, el estrés entre otros. Esto señala que el nuevo diseño, debe estar ajustado a las condiciones antropométricas y biomecánicas del operador, así como a las características de la tarea ejecutada.
La Parasitosis Intestinal como una de las Causas para el Desarrollo de Anemia en la Población Infantil en Zonas Rurales del Ecuador
Authors: Ramos Mancheno Angelita Dolores de Jesús , Jácome Valverde César Vicente , Sulbarán Brito Migdalia Janeth , Paguay Sani Lizbeth Johanna
Published: September 2024

La parasitosis intestinal es un problema común en países subdesarrollados, ya que puede generar anemia, desnutrición, obstrucción intestinal, retraso cognitivo, y en casos graves, incluso la muerte, afectando considerablemente la salud y nutrición infantil. El objetivo de este estudio es determinar si la parasitosis intestinal es una causa de anemia en niños, considerando que los parásitos, tanto protozoos como helmintos, ingresan al organismo, se alojan en el intestino o en otras áreas, y frecuentemente se reproducen, causando infecciones o síntomas. Esta revisión sistemática, de carácter descriptivo y documental, se basó en fuentes bibliográficas reconocidas y siguió las directrices de la declaración PRISMA. Se revisaron artículos científicos en revistas indexadas, cuyos resultados evidenciaron que la presencia de protozoarios como Entamoeba histolytica, Blastocystis hominis, Giardia lamblia, y  helminto Ascaris lumbricoides están vinculados a la aparición de P. En conclusión, se confirma que la A y las infecciones parasitarias en los niños de zonas rurales de Ecuador están asociadas a la pobreza y la escasez de agua.
A study on serum potassium and serum magnesium levels in acute myocardial infarction with special emphasis on rhythm disturbance
Authors:   Department of General Medicine, Saveetha Medical College, Chennai, Tamil Nadu, India, Vaishnavi K.I.S.N. , Vignesh C. ,   Department of General Medicine, Saveetha Medical College, Chennai, Tamil Nadu, India, Mariraj I. ,   Department of General Medicine, Saveetha Medical College, Chennai, Tamil Nadu, India, Krishna Geetha N. ,   Department of General Medicine, Saveetha Medical College, Chennai, Tamil Nadu, India, Gowri Shankar A. ,   Department of General Medicine, Saveetha Medical College, Chennai, Tamil Nadu, India
Published: September 2024

Background and objectives. Myocardial infarction (MI) is a severe cardiac event associated with plaque formation in arteries, leading to reduced blood flow to the heart. Arrhythmias, such as bradyarrhythmia or tachyarrhythmia, commonly accompany MI, contributing to its morbidity and mortality. Electrolyte disturbances, particularly potassium and magnesium imbalances, can exacerbate arrhythmic risks in MI patients. This study aimed to assess the incidence of alterations in serum potassium and magnesium levels during acute MI and their correlation with rhythm disturbances. Material and methods. A prospective analytical study was conducted with 150 patients diagnosed with acute MI based on ECG changes and elevated cardiac markers. Serum potassium and magnesium levels were measured, and rhythm disturbances were assessed using continuous cardiac monitoring and standard ECG. Spearman correlation analysis was performed to evaluate the association between serum potassium, serum magnesium, and rhythm changes. Results. The study investigated the demographic and clinical characteristics of participants and the potential relationship between serum electrolyte levels and arrhythmic changes. The mean age of the participants was 54.3 years, with a male predominance (76% male, 24% female). Among the participants, 50.67% had diabetes, 52% had hypertension, and 28% had both conditions. Serum electrolyte analysis showed elevated magnesium levels in 6.66% and elevated potassium levels in 12.66% of patients. Notably, arrhythmic changes in ECG were present in 62% of patients, with sinus tachycardia being the most prevalent (17%). However, statistical analysis revealed no significant correlation between serum magnesium, serum potassium, and rhythm changes (p >0.05). These findings suggest that while arrhythmic changes are common, they are not directly associated with elevated levels of these electrolytes, indicating the need for further investigation into other potential factors influencing arrhythmias in this population. Conclusion. Despite the prevalence of electrolyte disturbances in acute MI patients, this study found no significant association between serum magnesium, serum potassium levels, and rhythm disturbances. Further research is warranted to elucidate the complex interplay between electrolyte imbalances and arrhythmias in MI.
Experimental Study on the Effect of Skin Friction Drag and Convective Heat Transfer for Viscoelastic and Pseudoplastic Fluid Flow
Authors: Ahammed Meraz , Alam Md. Mahbubul
Published: September 2024

Drag Reducing Agents (DRAs) have a huge impact and major concern in engineering and industrial applications. It makes the fluid flow turbulent to laminar, dampens eddy reduces head loss by up to a certain limit, and saves pumping energy costs. Viscosity is the property that dampens eddy due to the viscous effect, which increases the fluidity up to a certain limit. Pseudoplasticity is the shear thinning effect that decreases viscosity when the flow rate increases. So, for the viscoelastic effect, we can increase the concentration up to a certain limit to reduce head loss. Still, during flow due to the pseudoplastic effect, the viscosity will start decreasing which is a negative effect. So, these combined effects are studied to reduce skin friction drag in the pipeline and save energy costs which will be convenient for the food industry, chemical, and medicine industries. In this investigation, investigation is carried out for 0.3 g/L, 0.2 g/L, and 0.15 g/L of xanthan gum in turbulent flow to observe the pressure drop and heat transfer rate. The study reveals that after increasing viscosity the pressure drop reduced significantly. Conversely, the heat transfer rate was also reduced due to the poor mixing effect. A higher performance and less vibration of the pump was also observed. It was concluded that the frictional pressure drop was reduced up to 85 % and the heat transfer rate was reduced by up to 90% by increasing the concentration of the DRA up to 0.3 g/L at 10 LPM than the pure water or base fluid as a working substance on the double pipe heat exchanger. As the heat transfer rate reduced up to 90% with reducing pressure drop another aim of the study was to establish a concentration and flowrate for which the heat transfer rate is maximum and it was found at a concentration of 0.15 g/L of DRAs (drag reducing agents) at 22 LPM (maximum flowrate at this setup).
Numerical Analysis of Blended and RakedWinglets Using Solidworks Software
Authors: D Nagesh. , . Veeresh , M Varun , B L Saikeerthan , M Vaishak
Published: September 2024

A Winglet is an apparatus fastened to the wings. Utilized to decrease the induced drag brought on by wingtip vortices, in future increasing aeroplane productivity. It is an extension that might be horizontal, vertical, or angled. Winglets increase a wing's useful perspective ratio without significantly increasing the structural pressure and resulting crucial load on the wing structure. Comparing aerodynamic properties such as lift coefficient (Cl),drag coefficient (Cd), lift to drag ratio (L- D), and evaluating the features of blended and raked winglets is done to achieve this. For greater accuracy, the Spalat-Allmaras turbulence model is used around the cross section of the wing wall. Using SOLIDWORKS software, the wing model and lattice are calculated. The three-dimensional aeroplane wing is created using the NACA 2415 air foil segment. Low Mach number computational simulations are run by SOLID WORKS at various angles of attack. Given that the impact of vortices is greatest during take-off and landing phases of an airplane's flight, CFD study for wings with blended and raked winglets designs is conducted during these phases. It is necessary to measure the aerodynamic characteristic of wings with blended and
Hydrocarbon Potential and Basin Analysis of the Southern Permian Basin, North Sea: Evaluating Key Plays in the Turonian and Carboniferous
Authors: B. I. Odoh, , C. V. Ahaneku, , M.C. Ochili, , E. C. Ijeh, , G. O. Ozoemena, , A. O. Okpara, , S.C. Nwafuluibeya, , D. C. Modekwe, , D.C. Chukwu, , C.M. Umegboro, , B.E. Joseph, , B.K. Ibeabuchi, , A. Eze,
Published: September 2024

This research provides an in-depth basin analysis and evaluates the hydrocarbon potential in the Southern Permian Basin, North Sea, Netherlands. It employs a thorough approach, including interpreting well logs, analysing petrophysical data, mapping faults and horizons, converting time to depth, and calculating reserves. The study highlights two key plays: the Turonian play (Barremian Formation) and the Carboniferous play (Rotliegend Formation). Petrophysical analysis of the Turonian Formation shows porosity values between 8.9% and 16% and net-to-gross ratios ranging from 0.6 to 1.0, indicating variable reservoir quality with a 45% geological chance of success. In contrast, the Carboniferous play, which includes Rotliegend marine sandstones, has a 45% chance of success but benefits from better porosity and permeability than the Turonian Formation. The research produced time and depth structure maps, clarifying trap mechanisms and identifying potential leads. With its promising results, the Southern Permian Basin presents a significant opportunity for future exploration and development. However, the study notes several limitations, such as issues with power stability, the need for more 3D seismic data and missing logs like neutron and density for some wells. Addressing these issues by improving data collection and operational conditions is crucial, as it could enhance exploration accuracy and increase the chances of success in the Southern Permian Basin. It also highlights the potential for further research in this area.
Prediction of Gestational Diabetes Mellitus Risk in Early Pregnancy Using Antenatal Screening Biomarkers
Authors: Sarıoğlu Gül Boran , Taş Emre Erdem
Published: September 2024

Aim: In this study, we aimed to compare their success in predicting the risk of Gestational Diabetes Mellitus (GDM) using demographic (age, gravidity, parity), body mass index (BMI), first-trimester fasting blood glucose (FBG), thyroid-stimulating hormone (TSH), and antenatal screening biomarkers (dual and quadruple tests).
Materials and Methods: In this study, 800 pregnant women who underwent a one-step 75 g Oral Glucose Tolerance Test (OGTT) and antenatal screening tests at a tertiary hospital between January 2017 and June 2020 were retrospectively investigated. After patients were divided into two groups based on their GDM screening test results, the examined parameters were compared between the GDM-Positive and GDM-Negative groups. Once the parameters significantly associated with GDM were determined, their clinical utility in the early diagnosis of GDM was investigated.
Results: GDM was diagnosed in 159 (19.8%) of 800 patients. The GDM-Positive group had a higher age, gravidity, parity, BMI, and first-trimester serum FBG levels, as well as lower serum PAPP-A MoM levels than the GDM-Negative group (P
Investigation of urban biodiversity and factors influencing it based on modern technologies
Authors: Amanova Shahnaz S. , Hajiyeva Gulnar N. , Najafov Jabbar S. , Ibrahimova Leyla P.
Published: September 2024

In the article, the development of the cities of the Shirvan plain, located in the central part of the Republic of Azerbaijan, and the impact of this development on the loss of biodiversity of the cities were analyzed. Currently, cities, where more than 50% of the world’s population live, are the main reasons for the change of natural landscapes. The development of cities and the intensity of urbanization accelerate these changes. Therefore, our research is dedicated to the current issue. During the research, preference was given to modern methods. Landsat 5, 8 and 9 satellite images of 6 cities located on the Shirvan plain were obtained. As a result of the processing and analysis of these satellite images, the development of the territory and population of the cities was studied, and their effects on the natural landscape, its components, vegetation and water bodies were analyzed. The boundaries of cities in 1975 and 2023 were determined and compared. As a result of the conducted studies, it was determined by the processing of the 1975 topo plans and the 2023 satellite images that the area of the cities has increased by at least 2 times. The high average annual growth of the population has led to the transformation of cities from small towns to medium and large cities in a short period of time. This causes the loss of biodiversity as soon as possible and accelerates this process.
Improved Limits on Relativistic Interstellar Objects near Earth
Authors: Cline James M.
Published: September 2024

It was recently shown that exotic asteroid-sized objects moving at relativistic speeds in the vicinity of the Earth could be detected by their gravitational waves in the LIGO-Virgo-KAGRA experiments, thereby leading to a constraint on their local number density. Here I show that a much stronger limit can be derived from the fact that no such object has ever impacted the Earth.
The Peregrine Ion Trap Mass Spectrometer (PITMS) Investigation Development and Preflight Planning
Authors: Cohen Barbara A. , Barber Simeon J. , Driggers Phillip A. , Heather David , Howe Christopher , Landsberg Peter , Morse Thomas , Trautner Roland , Abernethy Feargus , Butroid Emma-May , Curran Natalie M. , Delepaut Christophe , Elliott Ellis , Fernandez Salgado Javier , Generie Joseph A. , Hager Philipp , Hall Sophie , Hillier Fiona , Hodgkins Max , Iacobellis Sara , Kasjanowicz Alicja , Koekkoek Ewout , Leese Mark , Lundmark Karin , Mayers Jeremy , Morse Andrew , Mortimer James , Peabody Hume L. , Reast Patrick , Sheridan Simon , Stamper Richard , Steigner Peter J. , Stier Harald , Summers Lauren , Tucker Orenthal J. , Whalley Martin , Woodward Simon
Published: September 2024

The Peregrine Ion Trap Mass Spectrometer (PITMS) is a mass spectrometer instrument that operated during the Astrobotic Peregrine Mission-1 as part of the NASA Commercial Lunar Payload Services initiative. This paper describes the instrument and investigation design, development, and planning conducted by the PITMS team, consisting of a successful partnership between NASA Goddard Space Flight Center (GSFC), The Open University, NASA, and ESA. PITMS was designed to measure the abundance and temporal variability of volatile species in the near-surface lunar exosphere from a landed platform on the lunar surface. The PITMS instrument consisted of a European Space Agency–provided Exospheric Mass Spectrometer (including sensor, electronics, controller, and power supply boards) and a GSFC wrapper that provided structural elements, thermal control, and a deployable dust cover. PITMS was designed to operate as a passive sampler, where ambient gases would enter PITMS through an aperture, diffuse around the mass analyzer cavity, become ionized by electron impact and trapped in an RF field, and then sequentially be released to a detector to build a mass spectrum. PITMS was capable of measuring species with a mass-to-charge ratio (m/z) from 10 to 150 Da, with a mass resolution of approximately 0.5 amu. The PITMS science investigation was planned to be operated by GSFC with an international team of scientists. Though the mission did not achieve its lunar landing, information about the PITMS instrument and planning is provided to be able to understand and effectively use data that will be forthcoming from the investigation.
Rapid Impact Crater Relaxation Caused by an Insulating Methane Clathrate Crust on Titan
Authors: Schurmeier Lauren R. , Brouwer Gwendolyn E. , Kay Jonathan P. , Fagents Sarah A. , Marusiak Angela G. , Vance Steven D.
Published: September 2024

Titan’s impact craters are hundreds of meters shallower than expected, compared to similar-sized craters on Ganymede. Only 90 crater candidates have been identified, the majority of which have low certainty of an impact origin. Many processes have been suggested to shallow, modify, and remove Titan’s craters, including fluvial erosion by liquid from rainfall, aeolian sand infill, and topographic relaxation induced by insulating sand infill. Here we propose an additional mechanism: topographic relaxation due to an insulating methane clathrate crustal layer in Titan’s upper ice shell. We use finite element modeling to test whether a clathrate crust 5, 10, 15, or 20 km thick could warm the ice shell and relax craters to their currently observed depths or remove them completely. We model the viscoelastic evolution of crater diameters 120, 100, 85, and 40 km, with two initial depths based on depth−diameter trends of Ganymede’s craters. We find that all clathrate crustal thicknesses result in rapid topographic relaxation, despite Titan’s cold surface temperature. The 5 km thick clathrate crust can reproduce nearly all of the observed shallow depths, many in under 1000 yr. A 10 km thick crust can reproduce the observed depths of the larger craters over geologic timescales. If relaxation is the primary cause of the shallow craters, then the clathrate thickness is likely 5–10 km thick. Topographic relaxation alone cannot remove craters; crater rims and flexural moats remain. To completely remove craters and reproduce the observed biased crater distribution, multiple modification processes must act together.
On the study the radius of analyticity for Korteweg-de-Vries type systems with a weakly damping
Authors: Otmani Sadok , Bouharou Aissa , Zennir Khaled , Bouhali Keltoum , Moumen Abdelkader , Bouye Mohamed
Published: September 2024

In the present paper, we considered a Korteweg-de Vries type system with weakly damping terms and initial data in the analytic Gevery spaces. The presence of tow functions $ c_1(x), c_2(x) $, called damping coefficients, made the system more interesting from an application point of view due to their great importance in physics. To start, by using the fixed point theorem in Banach space, we investigated the local well-posedness. Additionally, by employing an approximate conservation law, we extended this to be global in time, ensuring that the radius of analyticity of solutions remained uniformly bounded below by a fixed positive number for all time.
Polypharmacy and Therapeutic Inertia in Extreme Longevity: A Potential Clinical Ageism Scenario Secondary to Important Gaps in Clinical Evidence
Authors: Pantoja María Viviana , Lozada-Martinez Ivan David
Published: September 2024

Population aging is a global health priority due to the dramatic increase in the proportion of older persons worldwide. It is also expected that both global life expectancy and disability-free life expectancy will increase, leading to a significant rise in the proportion of individuals with extreme longevity, such as non-agenarians and centenarians. The inaccuracy of clinical evidence on therapeutic interventions for this demographic could lead to biased decision-making, influenced by age-related beliefs or misperceptions about their therapeutic needs. This represents a potential clinical ageism scenario stemming from gaps in clinical evidence. Such biases can result in 2 significant issues that adversely affect the health status and prognosis of older persons: polypharmacy and therapeutic inertia. To date, documents on polypharmacy in non-agenarians and centenarians account for less than 0.35% of the overall available evidence on polypharmacy. Furthermore, evidence regarding therapeutic inertia is non-existent. The purpose of this letter is to discuss polypharmacy and therapeutic inertia as potential clinical ageism scenarios resulting from the clinical evidence gaps in extreme longevity.
De cuerpos a perfiles: implicaciones psicopolíticas de la inteligencia artificial
Authors: Barrios-Tao Hernando , Díaz-Pérez Vianney
Published: September 2024

Los vínculos entre datos, algoritmos y dispositivos configuran desarrollos de sistemas fuertes de inteligencia artificial que impactan en los modos de ser y estar en el mundo. El artículo se orienta establecer implicaciones psicopolíticas de las inteligencias artificiales sobre el cuerpo, mediante una hermenéutica analógica de textos (2010-2021) en sus fases sintáctica, semántica y pragmática, que permita establecer una analogía entre los posibles beneficios, riesgos y oportunidades para los cuerpos y las subjetividades. Los resultados indican implicaciones en la reconfiguración del cuerpo en los escenarios digital, el mercado de los perfiles o nuevas formas de ser y estar en el mundo digital, así como el ejercicio de una psicopolítica en diferentes etapas: manipulación, modificación de conductas y gobernanza. Las conclusiones apuntan a nuevas prácticas del neoliberalismo orientadas a la interioridad de los sujetos y a la comercialización de los perfiles configurados mediante sistemas de inteligencia artificial.
Parias en el universo: lo sublime en la exploración espacial
Authors: Moreno Fernando Ángel
Published: September 2024

El presente trabajo es un análisis sobre la manera en que el concepto de «exploración espacial» contiene ciertos aspectos falaces respecto a la verdadera exploración espacial, puesto que se ha construido a partir de textos de diversos lenguajes estéticos de la tradicionalmente denominada «cultura popular». Estos textos han jugado con un imaginario que remite a cierto romanticismo espacial y a una obsesión con un Otro inquietante o modélico, según el caso, así como con lo sublime desprendido del llamado «vértigo cósmico». Todo ello se aglutina bajo el tópico «sentido de la maravilla».
La colonización espacial como síntoma
Authors: Arias Domínguez Asier
Published: September 2024

Empleamos en este artículo los proyectos de colonización espacial como pretexto para la reflexión en torno a la naturaleza del marco cultural dominante. Ese marco cultural, en el que dichos proyectos cobran pleno sentido, encuentra un difícil encaje en nuestro momento histórico: mientras aquél apuesta a la carta tecnocientífica la solución de cuantos problemas puedan presentársenos, en éste se hace progresivamente manifiesta la desproporción entre el alcance de esa carta y la profundidad de los abismos que en las últimas décadas ha abierto la extralimitación material de nuestras economías. Nos aproximamos a esa desproporción a través de la curva de Hubbert y la valoración exergética de la disponibilidad de recursos, comprobando al hacerlo que la actual coyuntura de la civilización industrial guarda inquietantes semejanzas con la clave de bóveda de la solución a la paradoja de Fermi recientemente ensayada desde la astrobiología del Antropoceno. Sostenemos finalmente que, con independencia de la adecuación empírica de esta propuesta teórica, cabe rastrear en esas semejanzas decisivas orientaciones para el análisis de importantes deficiencias del marco cultural dominante.
Por qué aquí el Ser y no más bien en la Nada: el principio antrópico y el SETI frente a una teleología astronómica
Authors: Gutiérrez Aguilar Ricardo
Published: September 2024

La nueva era de exploración espacial ha sopesado una y otra vez las posibilidades que tiene nuestro planeta de ser el lugar cósmico en el que las únicas formas de vida inteligentes del universo se hayan desarrollado. La astrofísica y la astrobiología lo ha hecho con números. Esta inquietud existencial se ha plasmado en una serie de escalas científicas que miden la importancia relativa del posible impacto sobre nuestra civilización de un encuentro con vida extraterrestre inteligente. Lamentablemente las consecuencias medidas se han limitado a factores científicos y un hipotético control de daños, y a la credibilidad para con estos por parte de la opinión pública. Han olvidado sin embargo su trascendencia antropológica, moral y filosófica para nuestra especie.
Las razones del silencio cósmico. Variaciones eidéticas en torno a la paradoja de Fermi con Stanislaw Lem
Authors: Bak Agata
Published: September 2024

En este artículo se examinan las posibles razones por las puede fallar nuestro reconocimiento de las especies extraterrestres en el universo. Tras un breve escrutinio de la paradoja de Fermi, se analizan otras posibles causas por las que no seríamos capaces de reconocer otras especies u entes racionales, a través de las novelas de ciencia ficción de Stanislaw Lem. Éstas inciden sobre todo en la incapacidad humana de situarse en el lugar de «humildad copernicana», es decir, de concebirse meramente como habitantes de una región del Universo y no como medida de todas las cosas. La dificultad en relativizarse así desemboca, por un lado, en un problema a la hora de reconocer otros seres vivos, como se muestra en la segunda parte de este artículo, y, por otro lado, en una imposibilidad para comprender otras formas de comunicación. Por eso, en última instancia, el artículo aboga por reexaminar nuestro modo de comprender la racionalidad y exhorta a realizar variaciones eidéticas para poder concebir distintas formas de convivencia multiplanetaria. El problema de contacto se desvela, a raíz del análisis de dos novelas de Lem, como un problema antropológico y subjetivo y no necesariamente solo objetivo. Esto se lleva a cabo aludiendo brevemente a dos posturas acerca del sentido de la trascendentalidad y racionalidad fenomenológicas.
Reflexiones astrobioéticas en la búsqueda y expansión de la vida en el universo
Authors: Chon-Torres Octavio A.
Published: September 2024

La astrobioética es el estudio de las implicancias éticas de la búsqueda de vida en el universo. En esta constante, el ser humano trata de encontrar una respuesta a la pregunta milenaria sobre si estamos o no solos en el universo. Sin embargo, existen retos éticos que debemos afrontar si alguna vez llegamos a dar con esta respuesta, desde saber qué hacer si acaso encontramos vida microbiana en un planeta, hasta la de nuestra actitud frente a una posible detección de vida inteligente. No importa qué forma de vida sea, existirá una reacción por parte de nosotros, y ello no se limitará a una cuestión meramente tecnológica. ¿Necesitaremos crear zonas de protección planetaria para posibles formas de vida microbiana extraterrestre?, ¿tendremos que desarrollar formas actualizadas de empatía para el cuidado preventivo de vida extraterrestre? Además, la astrobioética también aborda la problemática del futuro de la humanidad en el universo, la consideración de nosotros como especie multi e interplanetaria. ¿Será el hecho de convertirnos en una especie multiplanetaria la respuesta a los problemas éticos humanos?, ¿tendrán más voz los países con mayor influencia los que determinen finalmente cuál código ético interplanetario deberíamos desarrollar? Esta y otras cuestiones son las que reflejan algunas de las reflexiones astrobioéticas en torno a la búsqueda y expansión de la vida en el universo.
Assessing Marketing Capabilities and Re-Patronage Intentions Relationship Through the Lens of Technological Advancement
Authors: Jyoti Jeevan , Dash Ganesh , Sharma Aditi , Akmal Syed
Published: September 2024

This study examines the relationship between marketing capabilities and re-patronage intentions in the retail sector. Building upon dynamic capability theory, expectation-confirmation theory, and social exchange theory, it also investigates the moderating role of technological advancement between marketing capabilities and customer satisfaction. Further, the mediating role of customer satisfaction has also been examined. Four hundred and seventy-nine shoppers across six shopping malls have responded to the questionnaire. The validity and reliability of the measurements have been confirmed through Confirmatory Factor Analysis. Structural equation modeling has been used for hypothesis testing. The study revealed that marketing capabilities affect customer satisfaction, and customer satisfaction affects both customer trust and re-patronage intentions. Further, technological advancement moderates the relationship between marketing capabilities and customer satisfaction. The study has many implications for academics and practitioners.
Mensurando um Índice de Condições Monetárias amplo para o Brasil
Authors: Cardoso Faro Kelly
Published: September 2024

O objetivo deste estudo é mensurar um Índice de Condições Monetárias (ICM) amplo para o Brasil que apresente a relação vigente entre o produto da economia, a taxa de juros, a taxa de câmbio e o resultado fiscal do governo. O estudo aplica o método ARDL para estimar os pesos/coeficientes das variáveis ​​no ICM amplo para o Brasil no período 2002:Q4 a 2018:Q1. O resultado indica um peso maior do canal de transmissão da taxa de juros seguido pelo canal da taxa de câmbio e, por último, pelo canal do resultado fiscal, implicação esta, que coloca em primazia o canal da taxa de juros na determinação do nível de produto no Brasil. O índice de condições monetárias amplo obtido traça razoavelmente bem a direção de política monetária para o período estudado, portanto, pode servir como um indicador adequado da orientação adotada pela autoridade monetária.
A indústria de transformação brasileira na crise do COVID-19
Authors: Iasco Pereira Hugo , Duregger Rafael , Itiro de Castro Tao Matheus
Published: September 2024

O presente artigo documenta os efeitos da pandemia de COVID-19 sobre a indústria de transformação brasileira. Para tanto, utilizou-se de dados agregados para contextualizar a dinâmica macroeconômica dos anos 2020 e 2021. Além disso, o estudo investiga os efeitos setoriais a partir de análise dos dados da Pesquisa Industrial Mensal (PIM) e da Pesquisa Industrial Anual (PIA), por meio da qual se intenta compreender os impactos setoriais da crise econômica e social engendrados pela pandemia do COVID-19. A compreensão do comportamento da indústria de transformação na crise da pandemia do COVID-19 se impõe como temática fundamental para políticas públicas industrializantes. Os resultados indicaram que setores produtores de bens intermediários e de bens de capital obtiveram recuperação mais rápida e com um nível de produção maior que os valores pré-pandemia em relação aos setores produtores de bens de consumo. As evidências também indicam ainda uma expansão do emprego industrial em vários setores industriais.
MATERNIDADE SOLO E INTERAÇÕES DE GÊNERO
Authors: Souza Solange de Cassia Inforzato de , Franco Julia Garani , Gomes Magno Rogério
Published: September 2024

Este artigo tem como objetivo analisar os impactos da maternidade solo e das interseccionalidades de gênero sobre os rendimentos no mercado de trabalho no Brasil. A partir dos microdados da Pesquisa Nacional por Amostra de Domicílios Contínua de 2019, estimaram-se as regressões quantílicas e as decomposições salariais de Oaxaca-Blinder e Recentered Influence Function -RIF. As principais constatações são as de que as mães solo sofrem penalidades salariais em relação às não mães e aos homens. A interação entre os fatores identitários, mulher, mãe e mãe solo, modifica as relações de gênero. A maternidade solo agrava as já reconhecidas desigualdades salariais entre os sexos, e mantém o nível de discriminação de sexo, que se elevam nos mais altos níveis de rendimentos. É, portanto, contraproducente considerar as mães como categoria homogênea no mercado de trabalho, a partir da qual as ações públicas e privadas devem estar assentadas no país.
ANÁLISE DE PREÇOS HEDÔNICOS NO SETOR IMOBILIÁRIO DE RESIDÊNCIAS NA CIDADE DE LONDRINA – PR
Authors: ROCHA AMANDA THAIS , PINHEIRO THIAGO JOSE
Published: September 2024

O preço de imóvel é definido como preço hedônico, composto de características que avaliam, além das propriedades do próprio bem, como número de quartos, vagas na garagem, entre outros além das características de localização desse imóvel. Este trabalho tem como objetivo mensurar a valorização dos preços de casas a venda na cidade de Londrina-PR, baseado na Teoria dos Preços Hedônicos e métodos e técnicas da econometria espacial como a Análise Exploratória de Dados Espaciais (AEDE) e o modelo de regressão espacial SAR, a base de dados apresenta 655 anúncios de residências à venda, coletadas de janeiro a fevereiro de 2021, o modelo verifica quais atributos que mais impactam no preço final dos imóveis. Através da AEDE constatou-se uma dependência espacial com correlação positiva para o preço das casas na cidade de Londrina-PR, o modelo SAR constatou que a quantidade de quartos apresentou o maior valor no preço final dos imóveis sendo de 20,44%, seguidas de um aumento de 10,03% a cada unidade adicional de banheiro, 7,93% para a vagas de garagem e de 0,16% para cada m² adicional na residência, impactando todas num aumento do preço final.
HETEROGENEIDADE DOS PROFESSORES E DESEMPENHO ACADÊMICO DOS ESTUDANTES
Authors: Luz Leonardo
Published: September 2024

Este artigo investigou o efeito da heterogeneidade dos professores sobre a proficiência média escolar em Língua Portuguesa e Matemática na Prova Brasil (2009; 2011). Com base em um painel de escolas, foram considerados os desvios em relação à média das características dos professores como proxies para heterogeneidade docente e sua interação com uma dummy indicadora de critério de homogeneidade por desempenho na formação das turmas, para verificar se ocorre uma apropriação dos benefícios ofertados pelo docente pelos melhores alunos. Os resultados indicam efeitos significativos da heterogeneidade e os melhores alunos se beneficiam apenas em exames de Matemática