bluuebunny/crossref_metadata_2025 huggingface dataset:
Territorial Impact of the Agriculture Vocational Education in Albania
Authors: Noçka Eralda Shore , Mani Aelita Xhuveli , Kapaj Ana , Basha Alerta
Published: September 2023

The agricultural vocational education secondary school (AVESS) system in Albania, is organized through 8 institutions located in various regions, that tend to respond to entire the national demand, giving equal opportunities to all interested students, regardless of their place of residence. In these regards, the Albanian government has implemented several measures to attract students to integrate AVESS and facilitate their integration in the labor market. Despite the various measures, including financial support or adapted facilities for students coming from families with low income or from remote areas. The territorial impact of AVES remains limited and shows a relatively low coverage. This phenomenon is not exclusive to agricultural professional schools that do not have dormitories, but even to vocational schools that have dormitories and adequate facilities. Aiming towards a sustainable agricultural sector development and an efficient sectoral labor market, that tends to guarantee equal opportunities for the new generations, the objectives of the study are AVESS Gap identification, factors that impact AVESS attendance, assessment of the impact of governmental measures, and proposing recommendations for a sustainable AVESS system. To understand what are the main factors that influence the territorial impact of AVESS, a consolidated assessment has been performed during 2020-2021, passing through desk research, screening, focus groups, working groups, experts and agricultural representative interviews, and visit to relevant agricultural businesses, workshops, and dedicated surveys targeting teachers, students, and local businesses. Out of the assessment results, family income is the main factor influencing AVESS attendance. Regardless if schools have dormitory facilities or not, as the distance between students’ homes and the vocational school’s location increases, family income also tends to increase, but at a decreasing rate. Students coming from families with modest incomes show a lower mobility and beyond a certain distance they are less likely to register in AVESS located far from their residence. By testing three main hypotheses, it has been noticed that home-school distance negatively affects the attendance of students coming from families with lower incomes. In other words, family income plays a significant role in determining school attendance, particularly when considering the distance between students' homes and AVESS. Considering this finding and the low AVESS territorial impact, imply that the governmental financial incentives have a low impact and do not offer equal opportunities to all students, especially the ones residing far away from AVESS and coming from families with low incomes. In this context, new policies could be taken into account, such as enlarging the number of AVESS or evaluating the possibility to open agricultural vocational education secondary classes in general high schools located in rural areas.
Examining the Relationship Between Infection Power Rate and the Critical Threshold in Stochastic SIS Epidemic Modeling
Authors: Harchaoui B. , El Idrissi M. , El Haitami A. , Brahim A. Nait , Settati A. , Lahrouz A. , El Jarroudi M. , Er-Riani M. , Amtout T.
Published: September 2023

The stochastic SIS epidemic model is well-known for its critical threshold Rs, indicating the transition between disease eradication (Rs < 1) and epidemic outbreaks (Rs > 1). However, the scenario where Rs = 1 has been uncertain. We present a definitive resolution to this pivotal issue. Additionally, we introduce advancements in analyzing the disease-free state of equilibrium when Rs < 1 to deepen our understanding of the system dynamics. To validate our theoretical developments and provide visual evidence, extensive computer simulations are conducted, enhancing the comprehensiveness and applicability of our findings to the broader field of epidemiology and infectious disease modeling. The implications of our results extend to public health policies and interventions aimed at effectively managing and controlling infectious diseases in different communities where Rs hovers around the critical value.
A Deep Convolutional Model for Heart Disease Prediction based on ECG Data with Explainable AI
Authors: M. U. Sreeja , M. H. Supriya
Published: September 2023

Heart disease (HD) prediction is crucial in realizing the notion of intelligent healthcare owing to the exploding number of heart diseases being reported on a daily basis. However, in a domain like healthcare, accountability is key for a medical practitioner to completely adopt the decisions of an intelligent model. Accordingly, the proposed model develops a convolutional model for heart disease prediction based on ECG data in a supervised manner. Moreover, the easily accessible and economical ECG data is utilized in the model in the form of image data. The incorporation of ECG data as images has provided amazing results in the recent researches compared to being considered as signals. The architecture follows a stacked Convolutional Neural Network for extracting features from ECG images followed by fully connected network for classification. The evaluation of the proposed model on customized public datasets demonstrates its ability to achieve impressive outcomes by leveraging the characteristics of convolutional neural networks (CNNs) and supervised learning. Similarly, Explainability in the form of interpretability has been incorporated into the framework thus ensuring accountability of the model which is crucial in medical domain. Detailed experiments for identification of ideal model architecture are conducted. Further, local and vision based Explainability has been explored in detail using LIME and Grad-CAM. The model could achieve a precision, recall and f1-score of 0.982, 0.982, and 0.981 respectively proving the superiority of the model. Moreover, Explainability visualization based on popular algorithms for true positive and false positive results have shown promising results on the PhysioNet ECG dataset.
IMPLEMENTASI FOUR EYES PRINCIPLE PADA BANK KALBAR SYARIAH CABANG SAMBAS
Authors: Lestari Devi
Published: September 2023

Bank is a business entity that collects funds from the public in the form of savings and distributes them to the public in the form of credit and/or other forms in order to improve the standard of living of the people at large.Islamic banks or commonly referred to as interest-free banks, are banking institutions whose operations and products are developed based on the Al-Qur'an and the Hadith of the Prophet SAW. In other words, Islamic banks are financial institutions whose main business is providing financing and other services in payment traffic and money circulation whose operations are in accordance with Islamic sharia principles.In developing countries like Indonesia, bank activities, especially in lending, are one of the most important and main bank activities so that income from credit is the largest income. Therefore the risk of loss from lending is also large, so to avoid large risks, banks must apply the Four Eyes Principle system. This research uses a type of descriptive qualitative research, which only describes situations and events that come from interviews and observations. The benefit of this research is to find out whether the four eyes principle has been properly implemented at the Sambas Branch of the Sharia Bank Kalbar. The results of this study indicate that so far the Sambas Branch Sharia Bank Kalbar has implemented the Four Eyes Principle in banking activities carried out by the Sambas Branch Sharia Bank, it has been proven that so far there have been no problems or obstacles faced by the Sambas Branch Sharia Bank in channeling financing / credit.
Liquid-Assisted Grinding: Preparation of 3d Complex Derived from Cloxacillin
Authors: Jibril S. , Saje B. A. , Musa I. , Inusa M. A.
Published: September 2023

3d complex derived from cloxacillin was prepared using liquid assisted grinding with water as a best possible green solvent. Elemental analysis data shows the complex to be represented as [Fe (clox)2 Cl2]. Spectral studies revealed the ligand as bidentate which coordinated to the metal ion through carbonyl group and also, both the spectral studies, magnetic moment value and conductivity measurement proposed the complex as octahedral geometry and rendered it non-electrolyte in nature in DMSO solvent.
Trabajo Colaborativo y Aprendizaje del Idioma Inglés en Estudiantes de un Centro de Idiomas
Authors: Rivera Pezo Eduardo Humberto , Maurtua Castañeda Agatha , Lazo Montero Gloria Lizeth , Rivera Carhuancho Hilda , Picón Ramón Shirley Julissa , Mendoza Orihuela Daniel Tito
Published: September 2023

La presente investigación tuvo como objetivo determinar la relación que existe entre el trabajo colaborativo y el aprendizaje del idioma inglés en estudiantes de un centro de idiomas. El método empleado fue el hipotético-deductivo, la investigación fue de enfoque cuantitativo; de nivel descriptivo y de diseño correlacional. La población estuvo formada por 148 estudiantes y la muestra fue de 107. La técnica empleada para recolectar información fue la encuesta y el instrumento fue el cuestionario. Se concluyó que la variable trabajo colaborativo está relacionada de manera directa y positiva con la variable aprendizaje del idioma inglés.
Programa de Intervención para Lograr el Envejecimiento Activo y Saludable
Authors: Marín Aragón Rachel de Jesús , Marín Llaver Leonardo Ramón , De la Cruz Morales Elsa Marlene , Zambrano Pincay Graciela Hernestina , Cevallos Zambrano Doris
Published: September 2023

La medicina actual ha posibilitado que la esperanza de vida de las personas sea cada vez mayor, empequeñeciendo el deterioro físico que se sufren con la edad, lo que hace evidente que mayor cantidad de personas en este ciclo de la vida encuentren alternativas para mantener un envejecimiento digno, activo, saludable y feliz. Es objetivo de este trabajo proponer un programa de intervención para lograr el envejecimiento activo y saludable en las personas de tercera edad del Condominio Alta vista en el cantón Portoviejo. Durante el proceso investigativo se emplearon diferentes métodos y técnicas, tales como: análisis histórico-lógico, inductivo-deductivo, análisis-síntesis, análisis documental, observación participante y encuetas. También se emplearon métodos matemáticos-estadísticos para darle mayor confiabilidad a los resultados derivados de los instrumentos aplicados. Los resultados diagnósticos demostraron que las personas seleccionadas como muestra en este estudio subestiman la necesidad de contacto e interacciones sociales, ven la desvinculación como una opción definitiva e irreversible, no existen programas de animación social y cultural dirigidos y supervisados por profesionales especializados, que permitan el desarrollo activo y feliz de las personas en envejecimiento. El programa de intervención elaborado favorece la incorporación de estas personas a la vida social activa propiciando un envejecimiento activo y saludable.
Estimación de Riegos a la Salud por la Presencia de Plaguicidas Organofosforados en Sedimento (Polvo y Suelo Respirable) en el Norte de Sinaloa
Authors: Ávila Díaz Jeován Alberto , Gonzalez Marquez Luis Carlos , Arciniega Galaviz Marco Arturo , Hernández Sandoval Pedro , Váldez Martínez David
Published: September 2023

Las intensas actividades agrícolas en Sinaloa, hacen del uso de plaguicidas organofosforados una práctica común. Debido a ello, el agua, sedimentos y organismos de drenes agrícolas, no se encuentran exentos de estar contaminadas por tales sustancias y por lo tanto pueden representar un riesgo a la salud para la población. En esta investigación se evaluó la concentración de clorpirifos y dimetoato en  sedimeto y se estimó el riesgo a la salud por polvo y suelo respirable. Para el análisis se utilizó un cromatógrafo de gases Agilent 7890B acoplado a detector fotométrico de flama (FPD) y la estimación de riesgos a la salud se efectuó en base a la ingesta diaria admisible (ADI) para cada uno de los plaguicidas. En sedimento las estimaciones de riesgo no sobrepasaron los valores de la ADI, indicando que el ingreso de polvo y suelo por respiración no representan un riesgo aparente. Se recomienda ampliar los criterios de detección y evaluación a  organismos acuático que son extraidos para consumo, así como a otros grupos de plaguicida, ya que es sabido que fueron y son utilizados en sector agrícola regional. De esta manera se contará con una evaluación de riesgo a la salud pública más completa y detallada, que serviría como herramienta para la toma de decisiones.
Propuesta para Encontrar una ruta más Corta en un Entorno de Búsqueda 2D
Authors: Tomás Mariano Victor Tomás , Hernández Camacho Jorge , Núñez Cárdenas Felipe de Jesús
Published: September 2023

Para construir espacios de búsqueda (Laberintos) existen diversos algoritmos, estos se clasifican en laberintos simplemente conectados (LSC) y laberintos de conexión múltiple (LCM), los LSC tienen una única solución para dos celdas indicadas como entrada y salida. También hay diversos algoritmos para buscar la solución de un laberinto [1], [2], [8], Dijkstra es uno de los más utilizados en la representación con grafos, otros algoritmos, utilizan una representación matricial, con el uso de métricas de distancia utilizan información a priori para alcanzar el objetivo o meta, ejemplo de ello es A* o D* [2, 3].  En este trabajo se propone una estrategia para encontrar la trayectoria en un entorno de búsqueda o laberinto con una representación matricial tipo LSC, en la que se aprovecha información a priori que se obtiene durante la construcción del espacio de búsqueda, los movimientos se representan en forma de etiquetas numéricas que facilitan la navegación por una ruta en el entorno; en la ruta encontrada se identifican patrones binarios para realizar movimientos en diagonal de esa manera obtener una trayectoria más corta entre dos celdas.
Competencias Profesionales del Docente Universitario y Estado de Ánimo de Estudiantes en Tiempos de Pandemia. Nuevo Chimbote, 2021
Authors: Vallejo Martínez Miriam Vilma
Published: September 2023

La pesquisa, obtuvo el objetivo identificar la relación entre las categorías: Competencias profesionales del docente universitario y estado de ánimo de estudiantes en tiempo de pandemia, en la Universidad Nacional del Santa. Enfoque cuantitativo, corte transversal y diseño correlacional; con un muestreo estratificado considerando listas de estudiantes alfabéticamente, en 220 participantes. Los instrumentos fueron: a) El Cuestionario de competencias profesionales, rescatando el desempeño cognitivo y el desempeño social de los docentes, cuyo coeficiente de confiabilidad es: α = 0.970 (Galvis, 2007; b) Escala de valoración del estado de ánimo en adultos (EVEA) adaptado por Giuria y López (2021). Los hallazgos encontrados niegan la relación entre las Competencias profesionales del docente universitario y estado de ánimo de estudiantes en tiempo de pandemia. Por otro lado, en las tres facultades el movimiento bajo y muy bajo en la variable de estado de ánimo de los estudiantes se encuentra presente pero no relacionado con la competencia del docente, de la misma forma no está relacionado con la competencia cognitivo y social del docente, concluyendo que existen factores personales, familiares, entre otros que desencadenan los estados de ánimo de los estudiantes y requieren de ayuda profesional; así como del soporte del docente.
Peramalan Penerima Dana Guru Bantu Di Provinsi Riau Tahun 2022-2023 Menggunakan Fuzzy Time Series Ruey Chyn Tsaur
Authors: Bakri Rahmawati , Muttakin Fitriani , Rahmadeni Rahmadeni , Sari Gulo Ernila
Published: September 2023

Dana guru bantu merupakan bantuan dari pemerintah berupa uang yang diberikan kepada guru honorer atau non PNS. Dana guru bantu ini bertujuan untuk membantu sekolah agar terpenuhi kebutuhan akan tenaga guru di suatu kabupaten/kota atau Provinsi tertentu melalui sistem seleksi yang telah ditetapkan yang bersifat sementara. Dalam Permasalahan menentukan perkiraan jumlah guru yang menerima dana guru bantu se-Provinsi Riau tahun 2022-2023 ini dapat diatasi dengan menggunakan metode Fuzzy Time Series Ruey Chyn Tsaur yang mendefinisikan himpunan fuzzy pada data historis yang diamati dengan pembentukan interval, fuzzifikasi data historis, menetapkan Fuzzy Logic Relations Group dan melakukan peramalan probabilitas matriks transisi dan defuzzifikasi data fuzzy menghitung nilai menggunakan MAPE. Berdasarkan hasil pembahasan diperoleh hasil MAPE sebesar 0,536073441 dan jumlah guru yang akan mendapat dana bantu pada tahun 2022 sekitar 138-196 orang dan pada tahun 2023 sekitar 110-138 orang dengan hasil rata-rata MAPE 0,168687 % yang termasuk kategori sangat baik.
Performance Analysis of Wartsilä Turbocharger W18V50SG at Gas Engine Power Plant Sumbagut-2 Peaker 250 MW
Authors: Said Aiyub  , Darmein  , Ilyas Yusuf  , Sumardi  , Nelly Safitri
Published: September 2023

A turbocharger is a device that uses the energy in the exhaust gas produced during combustion to increase the amount of air intake that goes into the cylinder. At gas engine power plant SUMBAGUT 2 PEAKER 250 MW, the use of a turbocharger is thought to be efficient because it can recycle combustion exhaust gases, whose pressure and temperature are still high, to rotate the turbine on the turbocharger. As a result, the compressor forcibly suctions air and delivers it to the combustion chamber cylinder because one requirement for good combustion results is that the air must be in a solid state. Thermal efficiency is another way to assess the efficacy of the gas generator engine's performance. With these conditions, a study was conducted with the goal of determining the working system on the turbocharger and calculating the efficiency of the Otto cycle with a compression ratio = 12 (maximum for the Otto cycle), at a peak load of 18,445 kW, engine speed of 500 rpm, ambient temperature (T 1) = 27° C, the mass flow rate of fuel (m _fuel) = 2814 kg/h 0.781 kg/s, then the thermal.
A Hybrid Approach Adopted for Credit Card Fraud Detection Based on Deep Neural Networks and Attention Mechanism
Authors: Vikash Chander Maheshwari  , Nurul Aida Osman  , Norshakirah Aziz
Published: September 2023

Over the past few years, credit card fraud has become a serious problem as more individuals rely on credit cards for purchases. The significant increase in fraudulent activities can be attributed to advancements in technology and the prevalence of online transactions, leading to significant financial losses. To address this issue, an effective fraud detection system needs to be developed and put into practice. Machine learning techniques are commonly used to automatically detect credit card fraud, but they do not consider deceptive behaviour or behavioural issues that could lead to false alarms. The objective of this research is to determine how to identify instances of credit card fraud. This paper aimed to create a model using deep learning and SMOTE oversampling technique to anticipate credit card fraud. A Recurrent Neural Network with Long Short-Term Memory (RNN-LSTM) and an attention mechanism is suggested for detecting fraud. This model is known to be effective for processing sequential data with complex relationships between vectors. The performance of RNN-LSTM is compared to XGBoost, Random Forest, Naive Bayes, SVM, and ANN classifiers, and the experiments indicate that our proposed model achieves high accuracy of 99.4% and produces strong results. The suggested model has the potential to decrease financial losses worldwide by identifying instances of credit card scams or frauds.
Estimating the Population Growth Curve of Sea Turtle Eggs Production in Terengganu, Malaysia: Mathematical Modelling Approach
Authors: Anis Syafinas Dahri  , Ummu Atiqah Mohd Roslan  , Harfiandri Damanhuri  , Mohd Uzair Rusli
Published: September 2023

A growth curve is a growth pattern that is unique to each organism, species, or population. In general, the growth pattern is regulated by genetic and environmental factors, resulting in unique growth curves for each subpopulation of the same species. This research was written to identify the growth curve of the Terengganu’s sea turtle eggs population. This work was aided by a mathematical modelling technique, specifically the exponential and logistic growth models. The aim of this research is to select the most realistic model to describe sea turtle eggs production in Terengganu. Furthermore, this work is also intended to forecast the future population growth of sea turtles in Terengganu. Error analysis is used to compare the error produced by both models in comparison with the real data of sea turtle eggs. As a result, the logistic model is better suited to describing the growth of sea turtle eggs production in Terengganu. The logistic model indicated that the sea turtle population would steadily increase until it reached it carrying capacity. Thus, this research is critical for ensuring the sustainability of sea turtles by understanding the mechanism of logistic growth.
A Comparative Study of Effect of Bipolar Plate Materials on Contact Resistance and Heat Transfer in a PEMFC Stack
Authors: Atifi Adil  , Balli Lahcen  , Hlimi Mohamed  , El Bikri Khalid  , Hamri Bachir
Published: September 2023

In this paper, a comparative study based on Finite Element Method has been established in order to investigate the effect of bipolar plate materials on stress and temperature distribution in a proton exchange membrane fuel cell stack under functioning conditions. The analysis is conducted for three bipolar plate materials: Graphite BP, stamped uncoated stainless steel SS316L, and stamped Niobium coated SS316L. ICR (Interfacial contact resistance) between GDL and BP has been measured for each BP material. The effect of current densities and clamping force on contact resistance under real operating conditions have been estimated at different cell locations in the cell stack. The results show that contact resistance GDL/BP and GDL stress depend on the location of the cell in the stack especially in case of graphite BP and corroded SS316L BP. While, the Nb coated SS316L BP allows for a neglected temperature gradient between the components of the cell stack.
Simulation of Trenched Coreless Silica Fiber Sensor for Refractive Index Measurement
Authors: Nazirah Mohd Razali  , Hafizal Yahaya  , Muhammad Quisar Lokman  , Siti Nur Fatin Zuikafly  , Fauzan Ahmad
Published: September 2023

Coreless silica fiber has garnered a lot of attention in the field of sensors. Nevertheless, the limitation of conventional and unique coreless silica fiber sensors such as complex simulation, and high fragility of its physical structure needs to be considered. This work presents a simulation of a new coreless silica fiber design in a form of a trenched coreless silica fiber sensor to overcome these limitations. To optimize the sensor’s design, the trench depth was changed in the range of 0 μm to 50 µm at a fixed trench width of 50 μm. The change in analyte refractive index ranging from 1.3000 RIU to 1.4000 RIU was performed to evaluate the simulated sensing performance which showed that the increase in trench depth improved the sensor’s sensitivity with 50 μm being the trench depth at which the highest sensitivity was recorded. Later, the results obtained was compared to the closest in term of design which is the standard coreless fiber. Overall, the trenched coreless silica fiber design provided better sensitivity and is highly capable as of has a new refractive index sensor with an estimated sensitivity of up to 6.62726x10-7, higher than the simulated standard coreless fiber sensor with that of 2.22053x10-7.
Real-time Thermal Energy Harvesting from Solar Radiation in Malaysia at Low-Temperature Difference
Authors: Muhammad Nazri Rejab  , Omar Mohd Faizan Marwah  , Muhammad Akmal Johar  , Mohamed Najib Ribuan
Published: September 2023

.Malaysia is located in a tropical climate with an abundance of solar radiation. Due to the low albedo of roofing material, around 20 % to 90 % of heat is absorbed from solar radiation. Thus, it is possible to harvest thermal energy from solar radiation using TEG, which promotes the diversity of renewable energy sources in Malaysia. Previous research evaluates the potential of thermal energy harvesting of the TEG open circuit voltage and unipolar condition. Thereby, this research focuses on designing and developing a thermal energy harvesting system (TEHS) for harvesting thermal energy at low-temperature differences from solar radiation. The TEHS can harvest thermal energy in bipolar conditions, different voltage levels, TEG input voltage fluctuations, and rapid weather-changing conditions during real-time field tests. Parallel with series balance TEG array configuration obtained impedance matching at 125 Ω. The field test method was conducted for 105 days. The maximum mean efficiency obtained is 94.33 %, with an output power range between 0.46 mW and 66.10 mW. The promising finding indicates that the developed TEHS is robust and capable of operating at optimum power transfer at uncontrollable solar radiation and weather conditions. In addition, the potential of the power generated evaluation is to be used as a power supply to several sensor nodes.
Effect of Matrix Permeability on a Horizontal Shale Gas Well Performance using a Fully Coupled Fluid Flow with Geomechanics Model
Authors: Tareq Mohammed Al-Shami  , Shiferaw Regassa Jufar  , Berihun Mamo Negash  , Lee Jang Hyun  , Mohammed Bashir Abdullahi  , Sameer Al-Hajri
Published: September 2023

Recently, hydrocarbon production from unconventional oil and gas resources has emerged. The most common unconventional oil and gas resources are found in shale formations. These shale formations are well-known for being stress-sensitive. Usually, traditional tools are used to model and study production from such formations. However, conventional modeling techniques denote rock deformation using constant rock compressibility. Such an approach is useful for studying conventional hydrocarbon resources where formation stress sensitivity is insignificant. However, when it comes to modeling stress-sensitive formations such as shale formations, it is important to include the rock deformation and its effects on the overall fluid flow in porous media. To consider the rock deformation in the fluid flow model, the coupling of fluid flow with the geomechanics model has to be used. This study utilizes a fully coupled fluid flow with a geomechanics model. In addition, shale formations are also known to have an ultra-low matrix permeability, and production usually results from hydraulic fractures that act as flow conduits. Consequently, the effect of matrix permeability on hydrocarbon production is rarely studied. This study focuses on the effect of matrix permeability on the production performance of a single horizontal well in Barnett Shale. It also focuses on the effect of matrix permeability on production performance when the geomechanics effects are coupled with the fluid flow model and decoupled. The results show that the higher the matrix permeability, the better the production performance of the well. The results also show that the higher the matrix permeability, the higher the estimated cumulative production difference between the two models (when the geomechanics effects are coupled and decoupled).
On Exact Solutions to Problems of Steady Flow of Incompressible Viscous Fluid in a Channel and in a Circular Pipe
Authors: Suren Mkhitaryan  , Arestak Sarukhanyan  , Eghine Kanetsyan
Published: September 2023

Turning to the well-known Couette flow, we again, but now in a new formulation, consider the steady motion of an incompressible viscous fluid in a channel with two parallel flat walls, one of which is stationary while the other moves at a constant speed in its plane. In the classical formulation of this problem on a layered (laminar) fluid flow in a channel, the wall velocity and the constant pressure drop along the channel are independent quantities and are considered predetermined. However, when a solid body moves along the fluid surface, the fluid particles are set in motion. This occurs due to the arising pressure generated in the fluid caused by the movement of the solid body. Therefore, here the pressure or pressure drop is not predetermined but is determined as a result of solving the corresponding two-dimensional boundary value problem of a steady flow of a viscous fluid in a channel. For this, the corresponding boundary value problem of a fluid flow in the channel is formulated based on the linearized Navier-Stokes equations obtained from the general nonlinear Navier-Stokes equations for a steady flow of a viscous fluid neglecting the convective terms, which is true for small Reynolds numbers. Using the Fourier integral transform method, an exact (closed) solution to this boundary value problem is constructed; the velocity and pressure components are determined. Then it is shown that the resulting solution, different from the known Couette flow solution, also satisfies the original nonlinear Navier-Stokes equations, the continuity equation, and boundary conditions. A comparative analysis of the new solution with the Couette flow solution is carried out. The well-known Hagen-Poiseuille problem is also discussed from the point of view of establishing the conditions for the laminar axisymmetric and steady flow of an incompressible viscous fluid in a straight circular pipe According to the study's results, to implement laminar flow under the indicated conditions, the pressure drop along the pipe must be constant. The study demonstrates that this condition is simultaneously sufficient, and therefore, the necessary and sufficient condition is established for a laminar flow in a straight circular pipe.
The TESS-Keck Survey. XVI. Mass Measurements for 12 Planets in Eight Systems
Authors: Akana Murphy Joseph M. , Batalha Natalie M. , Scarsdale Nicholas , Isaacson Howard , Ciardi David R. , Gonzales Erica J. , Giacalone Steven , Twicken Joseph D. , Dattilo Anne , Fetherolf Tara , Rubenzahl Ryan A. , Crossfield Ian J. M. , Dressing Courtney D. , Fulton Benjamin , Howard Andrew W. , Huber Daniel , Kane Stephen R. , Petigura Erik A. , Robertson Paul , Roy Arpita , Weiss Lauren M. , Beard Corey , Chontos Ashley , Dai Fei , Rice Malena , Van Zandt Judah , Lubin Jack , Blunt Sarah , Polanski Alex S. , Behmard Aida , Dalba Paul A. , Hill Michelle L. , Rosenthal Lee J. , Brinkman Casey L. , Mayo Andrew W. , Turtelboom Emma V. , Angelo Isabel , Močnik Teo , MacDougall Mason G. , Pidhorodetska Daria , Tyler Dakotah , Kosiarek Molly R. , Holcomb Rae , Louden Emma M. , Hirsch Lea A. , Gilbert Emily A. , Anderson Jay , Valenti Jeff A.
Published: September 2023

With JWST’s successful deployment and unexpectedly high fuel reserves, measuring the masses of sub-Neptunes transiting bright, nearby stars will soon become the bottleneck for characterizing the atmospheres of small exoplanets via transmission spectroscopy. Using a carefully curated target list and observations from more than 2 yr of APF-Levy and Keck-HIRES Doppler monitoring, the TESS-Keck Survey is working toward alleviating this pressure. Here we present mass measurements for 11 transiting planets in eight systems that are particularly suited to atmospheric follow-up with JWST. We also report the discovery and confirmation of a temperate super-Jovian-mass planet on a moderately eccentric orbit. The sample of eight host stars, which includes one subgiant, spans early-K to late-F spectral types (T
eff = 5200–6200 K). We homogeneously derive planet parameters using a joint photometry and radial velocity modeling framework, discuss the planets’ possible bulk compositions, and comment on their prospects for atmospheric characterization.
Using KCWI to Explore the Chemical Inhomogeneities and Evolution of J1044+0353
Authors: Peng 彭 Zixuan 子轩 , Martin Crystal L. , Thibodeaux Pierre , Zhang 张 Jichen 及晨 , Hu Weida , Li 李 Yuan 远
Published: September 2023

J1044+0353 is considered a local analog of the young galaxies that ionized the intergalactic medium at high redshift due to its low mass, low metallicity, high specific star formation rate, and strong high-ionization emission lines. We use integral field spectroscopy to trace the propagation of the starburst across this small galaxy using Balmer emission- and absorption-line equivalent widths and find a poststarburst population (∼15–20 Myr) roughly 1 kpc east of the much younger, compact starburst (∼3–4 Myr). Using the direct electron temperature method to map the O/H abundance ratio, we find similar metallicities (1–3σ) between the starburst and poststarburst regions but with a significant dispersion of about 0.3 dex within the latter. We also map the Doppler shift and width of the strong emission lines. Over scales several times the size of the galaxy, we discover a velocity gradient parallel to the galaxy’s minor axis. The steepest gradients (∼30 km s−1 kpc−1) appear to emanate from the oldest stellar association. We identify the velocity gradient as an outflow viewed edge on based on the increased line width and skew in a biconical region. We discuss how this outflow and the gas inflow necessary to trigger the starburst affect the chemical evolution of J1044+0353. We conclude that the stellar associations driving the galactic outflow are spatially offset from the youngest association, and a chemical evolution model with a metal-enriched wind requires a more realistic inflow rate than a homogeneous chemical evolution model.
Integration of Ecosystem Services and Habitats into the Biodiversity Atlas Austria
Authors: Lumetsberger Tanja , Neubauer Georg , Wenzina Reinhardt
Published: September 2023

The Biodiversity Atlas Austria (“Biodiversitäts-Atlas Österreich”) is a data portal to explore Austria’s biodiversity. It is based on the open-source infrastructure of the Atlas of Living Australia (ALA) and was launched with support of the Living Atlas (LA) community in late 2019 by the Biodiversity Hub of the University of Continuing Education Krems funded by the Government of Lower Austria. At present, it stores more than 8.5 million species occurrence records from various data partners and institutions and is available in both English and German. The Atlas is running on two virtual machines with 4 TB storage and is hosting many of the ALA-developed tools and services such as collectory, biocache, biodiversity information explorer, regions, spatial portal, sensitive data service, lists, images, and dashboard.

In the project “ÖKOLEITA” (2021-2023), two new tools were developed within the existing LA infrastructure and will be launched in late 2023 to allow users to deal with ecosystem services and habitat data.

The “ecosys”-tool will allow management, visualization, and analysis of ecosystem services by uploading different (raster or vector) TIFF files containing mapped ecosystem services to the geoserver. Users will be able to inspect various ecosystem services at a specific geolocation or compare different geolocations or a transect on their respective ecosystem service potential. The ecosystem service values are presented on the one hand as pictograms, where the value is transformed into quintiles, orienting on the work by Schreder et al. (2018), and as bar chart showing the true values.

The “habitat” tool will store and manage datasets of habitat mappings (shapefiles) and allow users to spatially explore those various habitat mappings on a map. Users will be able to search for specific habitats across all datasets or a specific one and get all occurrences of this habitat type returned. Through linkage to the biocache, a click on a specific area reveals the list of species found within that habitat recording, as well as all the species occurrences within that area stored in the database. A “habitat backbone” of the most used habitat classifications in Austria will allow dealing with habitat mappings that use different classifications.

Both tools are integrated into the Living Atlases infrastructure and communicate with the other tools and services of the Biodiversity Atlas Austria (Fig. 1). They share a common administration back-end but have different front-ends, where the users can explore the ecosystem services and habitats spatially and in connection with species occurrence records and other contextual information.
Towards Improved Data Flows for the Management of Invasive Alien Species and Wildlife: A LIFE RIPARIAS use case
Authors: Reyserhove Lien , Huybrechts Pieter , Hillaert Jasmijn , Adriaens Tim , D'hondt Bram , Oldoni Damiano
Published: September 2023

Invasive alien species (IAS) are recognised as a major threat to biodiversity. To prevent the introduction and spread of IAS, the European Union Regulation (EU) 1143/2014 imposes an obligation on Member States to both develop management strategies for IAS of Union Concern and report on those interventions. For this, we need to collect and combine management data and streamline management actions. This is still a major challenge: the landscape of IAS management is diverse and includes different authorities, managers, businesses and non-governmental organizations. Some organizations have developed their own specific software applications for recording management actions. For other organizations, such a software system is lacking. Their management data are scattered, not harmonized, and often not openly available. For EU reporting, a workflow is needed to centralize all information about the applied management method, management effort, cost, effectiveness and impact of the performed actions on other biota or the environment. At this moment, such a workflow is lacking in Belgium.

One of the aims of the LIFE RIPARIAS project is to set up a workflow for harmonizing IAS management data in Belgium. Based on the input from the IAS management community in Belgium, we were able to:

draft a community-driven data model and exchange format called manIAS (MANagement of Invasive Alien Species, Reyserhove et al. 2022), and

identify the minimal requirements a software application should have for being successfully used in the field (Hillaert et al. 2022).

draft a community-driven data model and exchange format called manIAS (MANagement of Invasive Alien Species, Reyserhove et al. 2022), and

identify the minimal requirements a software application should have for being successfully used in the field (Hillaert et al. 2022).

In this presentation, we will explore both outputs, the lessons learned and the way forward. With our work, we aim to facilitate coordination and transfer of information between the different actors involved in IAS and wildlife management, not only on a Belgian scale, but also within an international context.
Exploring the relationship between bats (Mammalia, Chiroptera) and ectoparasitic flies (Diptera, Hippoboscoidea) of the Orinoquia Region in South America
Authors: Ospina-Pérez Erika M. , Rivera-Páez Fredy A. , Ramírez-Chaves Héctor E.
Published: September 2023

Bat flies (Nycteribiidae and Streblidae) have been used to study co-evolutionary patterns between ectoparasites and bats. In the world, Nycteribiidae and Streblidae are represented by approximately 276 and 237 species, respectively. In regions such as the Orinoquia located in the north of South America (Colombia and Venezuela), the richness of bats is high (more than 100 documented species), but studies on Nycteribiidae and Streblidae are scarce and discontinuous. To contribute to the knowledge of ectoparasitic flies in the Orinoquia, records of flies and their interactions with bats were reviewed, including new records and associations using interaction networks. We documented 124 species of Streblidae and only 12 of Nycteribiidae for the Orinoquia in approximately 102 bat species reported in Colombia and Venezuela. New records for six species of bat flies in Colombia were found (Mastoptera guimaraesi, Noctiliostrebla maai, Paradyschiria parvuloides, Trichobius jubatus, Trichobius parasiticus, and Basilia ferrisi) associated with six species of bats (Cynomops planirostris, Desmodus rotundus, Myotis handleyi, Molossus rufus, Noctilio albiventris, and Phyllostomus hastatus). The bat-ectoparasite interaction networks in the Orinoquia revealed a pattern of antagonistic relationships, with high specialization, modularity, and low connectivity and nesting. The identified networks are between bat fly species belonging to different ecomorphological groups with unique host species. This supports the idea of ecological niche partitioning among ectoparasitic bat flies and hosts. Our study expanded the knowledge of the distribution of some fly species and the associations with bat hosts in Colombia, by presenting morphological descriptions and new observations, which are key to understanding the ecology, diversity, and distribution of these species.
Taxonomic insights into Panopeus lacustris Desbonne (Crustacea, Decapoda, Brachyura) based on morphological and molecular data
Authors: Jarquín-González Jani , Valdez-Moreno Martha , Rosas-Luis Rigoberto
Published: September 2023

The genus Panopeus belongs to the family Panopeidae and comprises a group of brachyuran crabs native to the American continent (except for P. africanus). However, taxonomic problems related to the presence of cryptic species have made it difficult to recognize the species and advance the biological knowledge of this group. Herein, a detailed description based on morphological and molecular data is provided for the species P. lacustris for the first time. Additionally, new morphological characters are proposed for the discrimination of the species. It is strongly suggested to increase the knowledge of the gene pool of the group, explore new morphological characters, and update the species descriptions to advance the group’s knowledge. This proposal will serve as a reference for future studies aimed at clarifying the taxonomic, conservation and ecological status of the species of Panopeus.
A double association-based evolutionary algorithm for many-objective optimization
Authors: Liu Junhua , Zhang Wei , Tian Mengnan , Ji Hong , Liu Baobao
Published: September 2023

In this paper, a double association-based evolutionary algorithm (denoted as DAEA) is proposed to solve many-objective optimization problems. In the proposed DAEA, a double association strategy is designed to associate solutions with each subspace. Different from the existing association methods, the double association strategy takes the empty subspace into account and associates it with a promising solution, which can facilitate the exploration of unknown areas. Besides, a new quality evaluation scheme is developed to evaluate the quality of each solution in subspace, where the convergence and diversity of each solution is first measured, and in order to evaluate the diversity of solutions more finely, the global diversity and local diversity is designed to measure the diversity of each solution. Then, a dynamic penalty coefficient is designed to balance the convergence and diversity by penalizing the global diversity distribution of solutions. The performance of DAEA is validated by comparing with five state-of-the-art many-objective evolutionary algorithms on a number of well-known benchmark problems with up to 20 objectives. Experimental results show that our DAEA has high competitiveness in solving many-objective optimizatiopn problems compared with the other compared algorithms.
Srednjeveška stavbna zgodovina kapele sv. Jakoba v Konjicah. Analiza arhivskih virov, arhitekture, stenskih poslikav in stavbne plastike
Authors: Oter Gorenčič Mija
Published: September 2023

Članek na podlagi analize znanih in novoodkritih arhivskih virov, novih spoznanj o srednjeveških poslikavah, sklepnikih z grbi ter o arhitekturni in stavbnoplastični pričevalnosti kapele prinaša spremenjeno razlago o srednjeveški stavbni zgodovini kapele. Opravljena raziskava kaže, da je bila konjiška kapela zgrajena kot enotna gradnja oziroma kot štiripolna bratovščinska kapela, ki je bila že v zadnji tretjini 14. stoletja tudi obokana. Grbovni sklepniki grofov Celjskih, gospodov Wallsee ter, kot je predlagano v tem prispevku, duhovnika in pozneje arhidiakona Jakoba Dürra kažejo na tesno povezavo z vplivno bratovščino, ki je imela v kapeli svoj sedež, hkrati pa prosopografske študije izpričujejo njihovo tesno prepletenost prav v času gradnje kapele.
Plečnikova oprema župnijske cerkve sv. Cirila in Metoda za Bežigradom v Ljubljani
Authors: Lazarini Franci
Published: September 2023

Prispevek obravnava opremo župnijske cerkve sv. Cirila in Metoda za Bežigradom v Ljubljani. Večino opreme, veliki oltar, obhajilno mizo, prižnico, lestenca, orgelsko omaro, stebra za večno luč, oltarček sv. Jožefa, Marijin steber, luči in več manjših izdelkov (npr. okvirje za nekatere slike) je med letoma 1934 in 1956 zasnoval Jože Plečnik, po čigar načrtih je bila zgrajena tudi sama cerkev. Izpostavljena je vloga naročnikov, bežigrajskih župnikov p. Kazimirja Zakrajška, p. Gabrijela Planinška, p. Stanislava Marije Aljančiča in p. Krizologa Zajca. Predstavljena je tudi usoda opreme po prestavitvi cerkve na novo lokacijo v letih 1957–1958.
Para uma crítica do poder:
Authors: Da Silveira Denise Narli
Published: September 2023

Este artigo procura traçar relações entre conceitos fundamentais da obra de Walter Benjamin e o pensamento de Giorgio Agamben. Sem pretender esgotar os vínculos entre os dois autores, propomos abordar noções e categorias de Benjamin para compreender suas influências no pensamento de Agamben. Lançando luz sobre essas influências, nosso desafio foi identificar algumas ideias na obra de W. Benjamin que pudessem designar o filósofo alemão como fonte de inspiração para a crítica ao poder e à violência desenvolvida pelo pensador italiano. Por isso destacamos em Benjamin as raízes dos conceitos de vida nua, poder soberano e estado de exceção, que Agamben elabora nas obras I, II e III de seu projeto “Homo Sacer”. Desenvolvemos noções de historiografia, enfatizando a categoria do oprimido e a tarefa de "escovar a história a contrapelo". Os textos benjaminianos que constituem sua teoria política são um verdadeiro arsenal crítico para pensar nossa história e o período entre guerras. A proposta de Agamben, na linha de Benjamin, é que entre as ruínas do passado possamos recolher vestígios e tecer memórias que permitam uma consciência crítica na construção de estilos de vida éticos no presente, contribuindo para as transformações necessárias que nos garantam um futuro de justiça social. Assumindo o campo de concentração como paradigma dessa relação, a identificação com as vítimas da violência, em Agamben, segue as indicações de Benjamin sobre a tarefa crítica: lançar nova luz sobre os fatos, dar voz aos que foram vítimas da violência, oprimidos e silenciados pelo poder soberano.
Pensando a discografia de Racionais MC’s à luz de Rancière:
Authors: Defillo Pintor Vinícius
Published: September 2023

O presente artigo busca fazer uso de conceitos presentes na produção intelectual do filósofo francês Jacques Rancière para pensar a obra fonográfica do popular grupo de rap paulistano conhecido como Racionais MC’s. Especialmente no que diz respeito à distinção elaborada pelo pensador entre uma lógica pedagógica embrutecedora e uma outra lógica pedagógica que seria emancipatória, sendo essa diferenciação também válida para se analisar práticas e produções artísticas. Propõe-se aqui que ao longo de sua trajetória, os rappers citados se aproximaram tanto de uma lógica quanto de outra, sendo oportuno identificar essas relações assim como apontar suas respectivas potencialidades e limitações.