bluuebunny/crossref_metadata_2025 huggingface dataset:
Tanggapan Iman Kristen Terhadap Pandangan-pandangan Teologi Feminis
Authors: Andi Yusuf Etni Grace , Sugiharto Ayub , Iyai Fincen
Published: November 2024

Tujuan penelitian ini adalah untuk menemukan bagaimana tanggapan iman Kristen terhadap perkembangan teologi feminis yang di mulai dari sebuah gerakan di Inggris pada abad 17 berkembang pesat di abad 19 dan 20 dalam bentuk sebuah ajaran atau teologi.  Teologi feminis tergolong dalam teologi pembebasan dimana pengaruhnya begitu besar  merasuki perkembangan teologi kekristenan dalam gereja. Berdasarkan penelitian, karakter paling jelas dari gerakan feminisme adalah lebih kepada bentuk protes terhadap sikap subordinansi gender dan diskriminasi kaum perempuan yang telah terjadi selama berabad-abad baik di dunia sekuler maupun di dalam kehidupan iman Kristen atau gereja. Istilah feminis itu sendiri telah menimbulkan anggapan yang menimbulkan pengharapan sekaligus ketakutan.    Oleh sebab itu perlu pemahaman tentang sejarah latar belakang munculnya teologi feminis dalam dunia kekristenan, supaya orang percaya atau gereja masa kini waspada pada bahaya perkembangan teologi-teologi kontemporer termasuk teologi feminis ini, sehingga gereja masa kini dapat siap menghadapi berbagai dampaknya.   Dengan menggunakan metode penelitian kualitatif deskriptif yang menggunakan pendekatan studi kepustakaan, diketahui bahwa ada beberapa pandangan teologi feminis yang bisa membahayakan dalam kehidupan kekristenan.  Selain itu ditemukan pula bahwa terdapat beberapa tanggapan yang diberikan gereja masa kini terhadap pandangan teologi feminis.
A Submillisecond Fourier and Wavelet-based Model to Extract Variable Candidates from the NEOWISE Single-exposure Database
Authors: Paz Matthew
Published: November 2024

This paper presents VARnet, a capable signal-processing model for rapid astronomical time series analysis. VARnet leverages wavelet decomposition, a novel method of Fourier feature extraction via the finite-embedding Fourier transform, and deep learning to detect faint signals in light curves, utilizing the strengths of modern GPUs to achieve submillisecond single-source run time. We apply VARnet to the Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) single-exposure database, which holds nearly 200 billion apparitions over 10.5 yr of infrared sources on the entire sky. This paper devises a pipeline in order to extract variable candidates from the NEOWISE data, serving as a proof of concept for both the efficacy of VARnet and methods for an upcoming variability survey over the entirety of the NEOWISE data set. We implement models and simulations to synthesize unique light curves to train VARnet. In this case, the model achieves an F1 score of 0.91 over a four-class classification scheme on a validation set of real variable sources present in the infrared. With ∼2000 points per light curve on a GPU with 22 GB of VRAM, VARnet produces a per-source processing time of <53 μs. We confirm that our VARnet is sensitive and precise to both known and previously undiscovered variable sources. These methods prove promising for a complete future survey of variability with the Wide-field Infrared Survey Explorer, and effectively showcase the power of the VARnet model architecture.
Hamilton Echelle Spectrograph Observations of Solar Analog Field Stars: Lithium Abundance and Activity
Authors: Lubin Dan , Holden Bradford P. , Stock Camille , Melis Carl , Tytler David
Published: November 2024

We measured lithium (Li) abundance and instantaneous chromospheric Ca ii HK activity in Hamilton Echelle Spectrograph observations of 211 solar analog field stars, with one objective being potential identification of grand minimum candidates for ongoing multiyear observation. At the zero-age main sequence, Li abundance for a typical late-type dwarf begins at the local interstellar medium abundance and over the main sequence lifetime is steadily depleted by convection at a rate dependent on details of the star’s convection and mixing processes. Our Li abundance measurements show an overall decrease in Li abundance with age and effective temperature, consistent with earlier surveys. In our activity measurements, 41 stars show log R′HK ≤ −5.0, which can be considered very inactive. Of the very inactive stars closest to solar effective temperature, 24 show Li abundances within the range typically observed for midlife Sun-like stars. Another three show very low Li abundance, which, combined with the low activity, suggest an older main sequence star or a slightly evolved star. We suggest that the combination of relatively undepleted Li and instantaneous very low activity might make these stars promising candidates for long time-series observations to determine if they are in a grand minimum state. The Hamilton Echelle Spectrograph observations are publicly available for download and are potentially useful for a variety of survey tasks involving Sun-like stars.
Has the Palomar 14 Globular Cluster Been Captured by the Milky Way?
Authors: Zonoozi Akram Hasani , Rabiee Maliheh , Haghi Hosein , Kroupa Pavel
Published: November 2024

We examine a new scenario to model the outer halo globular cluster (GC) Palomar 14 (Pal 14) over its lifetime by performing a comprehensive set of direct N-body calculations. We assume Pal 14 was born in a now detached/disrupted dwarf galaxy with a strong tidal field. Pal 14 evolved there until the slope of the stellar mass function (MF) became close to the measured value, which is observed to be significantly shallower than in most GCs. After about 2–3 Gyr, Pal 14 was then captured by the Milky Way (MW). Although the physical size of such a cluster is indistinguishable from a cluster that has lived its entire life in the MW, other parameters like its mass and the MF slope, strongly depend on the time the cluster is taken from the dwarf galaxy. After being captured by the MW on a new orbit, the cluster expands and eventually reaches the appropriate mass and size of Pal 14 after 11.5 Gyr while reproducing the observed MF. These simulations thus suggest that Pal 14 may have formed in a dwarf galaxy with a post-gas expulsion initial half-mass radius and mass of r
h = 7 pc and 8 < M/104 < 10 M
⊙, respectively, with a high degree of primordial mass segregation.
Dual Active Galactic Nuclei: Precursors of Binary Supermassive Black Hole Formation and Mergers
Authors: Saeedzadeh Vida , Babul Arif , Mukherjee Suvodip , Tremmel Michael , Quinn Thomas R. , Mayer Lucio
Published: November 2024

The presence of dual active galactic nuclei (AGNs) on scales of a few tens of kiloparsecs can be used to study merger-induced accretion on supermassive black holes (SMBHs) and offer insights about SMBH mergers, using dual AGNs as merger precursors. This study uses the Romulus25 cosmological simulation to investigate the properties and evolution of dual AGNs. We first analyze the properties of AGNs (L
bol > 1043 erg s−1) and their neighboring SMBHs (any SMBHs closer than 30 pkpc to an AGN) at z ≤ 2. This is our underlying population. We then applied the luminosity threshold of L
bol > 1043 erg s−1 to the neighboring SMBHs thereby identifying dual and multiple AGNs. Our findings indicate an increase in the number of both single and dual AGNs from lower to higher redshifts. We also find that the number of dual AGNs with separations of 0.5–4 kpc is twice the number of duals with separations of 4–30 kpc. All dual AGNs in our sample resulted from major mergers. Compared to single AGNs, duals have a lower black hole-to-halo mass ratio. We found that the properties of dual AGN host halos, including halo mass, stellar mass, star formation rate, and gas mass, are generally consistent with those of single AGN halos, albeit tending toward the higher end of their respective property ranges. Our analysis uncovered a diverse array of evolutionary patterns among dual AGNs, including rapidly evolving systems, slower ones, and instances where SMBH mergers are ineffective.
The Twisting of Radio Waves in a Randomly Inhomogeneous Plasma
Authors: Zhang Ze-Lin , Liu Ruo-Yu
Published: November 2024

Polarization of electromagnetic waves carries a large amount of information about their astrophysical emitters and the media they passed through, and hence is crucial in various aspects of astronomy. Here we demonstrate an important but long-overlooked depolarization mechanism in astrophysics: when the polarization vector of light travels along a nonplanar curve, it experiences an additional rotation, in particular for radio waves. The process leads to depolarization, which we call “geometric” depolarization (GDP). We give a concise theoretical analysis of the GDP effect on the transport of radio waves in a randomly inhomogeneous plasma under the geometrical optics approximation. In the case of isotropic scattering in the coronal plasma, we show that the GDP of the angle of arrival of the linearly polarized radio waves propagating through the turbulent plasma cannot be ignored. The GDP effect of linearly polarized radio waves can be generalized to astrophysical phenomena, such as fast radio bursts and stellar radio bursts, etc. Our findings may have a profound impact on the analysis of astrophysical depolarization phenomena.
No Evidence for a Dip in the Binary Black Hole Mass Spectrum
Authors: Adamcewicz Christian , Lasky Paul D. , Thrane Eric , Mandel Ilya
Published: November 2024

Stellar models indicate that the core compactness of a star, which is a common proxy for its explodability in a supernova, does not increase monotonically with the star’s mass. Rather, the core compactness dips sharply over a range of carbon–oxygen core masses; this range may be somewhat sensitive to the star’s metallicity and evolutionary history. Stars in this compactness dip are expected to experience supernovae leaving behind neutron stars, whereas stars on either side of this range are expected to form black holes. This results in a hypothetical mass range in which black holes should seldom form. Quantitatively, when applied to binary stripped stars, these models predict a dearth of binary black holes with component masses ≈10M
⊙–15M
⊙. The population of gravitational-wave signals indicates potential evidence for a dip in the distribution of chirp masses of merging binary black holes near ≈10M
⊙–12M
⊙. This feature could be linked to the hypothetical component mass gap described above, but this interpretation depends on what assumptions are made of the binaries’ mass ratios. Here, we directly probe the distribution of binary black hole component masses to look for evidence of a gap. We find no evidence for this feature using data from the third gravitational-wave transient catalog. If this gap does exist in nature, we find that it is unlikely to be resolvable by the end of the current (fourth) LIGO–Virgo–KAGRA observing run.
Hydrodynamical Simulations of Proton Ingestion Flashes in Type I X-Ray Bursts
Authors: Guichandut Simon , Zingale Michael , Cumming Andrew
Published: November 2024

We perform the first multidimensional fluid simulations of thermonuclear helium ignition underneath a hydrogen-rich shell. This situation is relevant to Type I X-ray bursts on neutron stars that accrete from a hydrogen-rich companion. Using the low-Mach number fluid code MAESTROeX, we investigate the growth of the convection zone due to nuclear burning, and the evolution of the chemical abundances in the atmosphere of the star. We also examine the convective boundary mixing processes that cause the evolution to differ significantly from previous one-dimensional simulations that rely on mixing-length theory. We find that the convection zone grows outward as penetrating fluid elements cool the overlying radiative layer, rather than directly from the increasing entropy of the convection zone itself. Simultaneously, these flows efficiently mix composition, carrying carbon out of and protons into the convection zone even before contact with the hydrogen shell. We discuss the implications of these effects for future modeling of these events and observations.
Exploring Spatial and Temporal Patterns in the Debrecen Solar Faculae Database: Part II
Authors: Korsós Marianna B. , Elek Anett , Zuccarello Francesca , Erdélyi Robertus
Published: November 2024

In this study, utilizing data from the Solar Dynamics Observatory/Helioseismic and Magnetic Imager–Debrecen Faculae Data Catalogue, we investigated solar facula distribution over timescales much larger than the individual lifetimes of faculae. We aimed to better comprehend the behavior of the Sun’s global magnetic field, where faculae play a role as markers. (1) Along the latitudinal direction, we observed the following in the appearance of faculae. (i) Short-term periods with the Carrington rotation (27.3 days) and some of its harmonics (approximately 13.5 and 9 day periods) are identified. In the northern hemisphere, there is also a faint 7 day period. (ii) We also identified longer periods. These longer periods, approximately between 150–300 and 300–500 days, exhibit a diminishing trend from the solar equator to the poles in both hemispheres. (2) Analyzing the distribution and evolution of the longitudinal coordinates of the faculae, we identified two pairs of active longitudes that are separated by 180° from each other.
A Novel Technique for the Extraction of Dynamic Events in Extreme Ultraviolet Solar Images
Authors: Kalenská Petra Kosová , Rajmic Pavel , Gebrtová Karolína , Druckmüller Miloslav
Published: November 2024

High-spatial-resolution images of the solar corona acquired in the extreme ultraviolet (EUV), most notably with the Atmospheric Imaging Assembly (AIA) instrument on the Solar Dynamics Observatory (SDO) reveal the abundance of dynamic events which range from flaring bright points and jets to erupting prominences and coronal mass ejections (CMEs). In this work we present novel techniques to extract such dynamic events from the more steady background corona using 17.1 nm SDO-AIA images. The techniques presented here treat any time series of coronal images as a matrix that can be decomposed into two matrices representing the background and the dynamic component, respectively. The latter has the properties of a so-called sparse matrix, and the proposed methods are classified as methods based on sparse representations. The proposed methods are the median-filter method, the principal component pursuit, and the dynamic-mode decomposition, all of which include data pre-processing using the noise-adaptive fuzzy equalization method. The study reveals that the median-filter method and the dynamic-mode decomposition enhance all motions in the time series and produce similar results. On the other hand, the principal component pursuit enables the clear differentiation of CMEs from the background corona, thus providing a valuable tool for the characterization of their acceleration profiles in the low corona as seen in the EUV.
War’s Shadow: Exploring Multifaceted Strategies in the Politics of Fear
Authors: Olga VLASOVA
Published: November 2024

This study delves into the intricacies of approaching politics of fear in general, with a particular focus on Russia. The author unveils different approaches to defining the politics of fear and describes its various dimensions, including instrumental, discursive, emotional, socio-political, and psychological aspects of fear manipulation. Through the analysis of fear-based tactics targeting the opposition, elites, and regime supporters, the study uncovers the intricate strategies to maintain control and suppress dissent in Russia today. However, the author underlines that the politics of fear in Russia has its limitations. For the majority of the previously depoliticized society, the opposite politics of pacification is implemented.
Impact of the War in Ukraine on Global Environmental Security
Authors: Olena SHEVCHENKO  , Anatolii SHEVCHENKO
Published: November 2024

he article examines the environmental consequences of the Russian-Ukrainian war and their impact on global environmental security. The authors consider various aspects of the ecological consequences of the war, in particular, local ecological consequences manifested in the growth of carbon dioxide emissions, the increase of specific waste, the pollution of water; environmental challenges of post-war reconstruction; the connection between military actions and the threat of global warming. The authors emphasize that the ecological consequences of this war will be felt not only on the territory of Ukraine, but also far beyond the country's borders, both in the short and long term. It is concluded that in the short term, the full-scale war of Russia against Ukraine resulted in an energy imbalance and a global crisis, in the long term, such a shake-up of the system will be able to accelerate the development and transition to renewable energy sources and bring the world closer to climate goals and reduce dependence on supplier countries fossil fuel.
Constructive Simulation Tools in the Armed Forces of the Slovak Republic
Authors: Daniel BREZINA
Published: November 2024

Currently, simulation technologies are an integral part of training not only in the military sector but also in the civilian sphere. The main aim of this paper is to describe and assess the use of constructive simulators used by the Armed Forces of the Slovak Republic. In this paper, the author analyzes the use of simulation technologies in the training and education of the land and air forces of the Slovak Republic. This paper also analyses the advantages and disadvantages of using constructive simulators for military training. The paper structure respects the general principles of simulation technology and crisis management.
Educating Soldiers’ Competencies Through Battlefield Simulation Systems
Authors: Svajone BEKESIENE  , Linas VARŽINSKAS
Published: November 2024

The study analyses the development of soldiers' competencies using the Joint Conflict and Tactical Simulation (JCATS). The results of the linear regression analysis identified several key findings regarding the factors influencing competency development with JCATS. Technological knowledge (TEC) emerged as the most crucial component, followed by strategic thinking (STR), both showing significant positive influences. These competencies should be prioritized in training programs and skill development initiativ es involving the JCATS simulator. Additionally, the number of training sessions completed (TST) highlighted the importance of practical experience and continuous learning. Although leadership skills (LED) did not reach statistical significance, they may st ill impact competency development in complex leadership scenarios or over the long term. This analysis helps to identify where the Armed Forces should focus its resources to maximize the effectiveness of competency development with JCATS, emphasizing technological knowledge and strategic thinking as key areas for effective soldier development.
Enhancing Collective Military Training: Integrating the Laser Battlefield Enhancing Collective Military Training: Integrating the Laser Battlefield System for the Lithuanian Land ForcesSystem for the Lithuanian Land Forces
Authors: Svajone BEKESIENE  , Herkus STANKEVIČIUS
Published: November 2024

This study examines the use of simulation systems in military training of the Lithuanian Armed Forces. It identifies significant gaps between the capabilities of current simulation systems and the needs of effective combat training, and highlights the need for improvements to help soldiers analyse complex situations and adapt to modern battlefield dynamics. The study confirms the need for further research to investigate how Multiple Integrated Laser Engagement System (MILES) can be more effectively integrated into Lithuanian military training programmes and how they can be tailored to specific national needs, including the possible adaptation of the MILES to the Lithuanian Land Forces.
Multicriterial Analysis and Comparison of Air-to-Air Fighter Jets
Authors: Ondrej MACH  , Jiri ULVR  , Pavlina RACKOVA  , Jan URBAN
Published: November 2024

Fighter aircraft are the dominant tools for gaining the desired level of air control. As the crisis over Ukraine since 2022 showed, air superiority in congested airspace plays a crucial role. The aim of this article is to present the methodological approach to compare different aircraft dedicated to air-to-air roles. For this purpose, the Multi-Criteria Decision-Making Method, based on the analytical hierarchy process, was used to identify the most suitable military fighter aircraft for air-to-air operations. To demonstrate the method, four operational representatives of the North Atlantic Treaty Organization countries were selected to compare specific aircraft types.
Practical Evaluation of Instruments for Determining the Exact Position During Artillery Operations of the Czech Artillery
Authors: Jan DRÁBEK  , Ladislav POTUŽÁK  , Tomáš HAVLÍK  , Viktor VITOUL  , Jiří NOVÁK
Published: November 2024

The thesis deals with the possibility of using civilian devices for position determination in the environment of theartillery of the Czech Army. These devices are discussed in the context of the accuracy of positioning in differentenvironments. For the experiment, widespread and commonly used positioning devices were selected. These means weresubsequently measured in spaces corresponding to the spaces in which artillery units could operate if deployed. Theexperimental results are then used to calculate probable target and firing position errors. Future investigation of the problemwill allow the artillery units to be equipped with modern means.
Some Problems with the CBRN Risk Quantification in Terms of Stochastic and Deterministic Effects Taking into Account the Health Impact of Individual Agents
Authors: Jozef SABOL  , Jan BAJURA  , Jan NEJEDLÝ
Published: November 2024

The total risk of Chemical, biological, radiological, and nuclear defense (CBRN) has to be expressed using relevant quantities and units introduced for each of their components, t.e., chemical (C), biological (B), radiological (R) and nuclear (N). Their specific properties characterise their ability to move in the environment and inflict harm on persons affected. While in the case of R and N components, the danger is induced by radiation, the assessment of the hazards from C and B agents is much more complicated. The paper discusses the quantification of CBRN risk as a whole, paying attention to two possible consequences of exposure-initiating harms: stochastic (late) and deterministic effects (tissue reactions). The main aim of the paper was to point out the inconsistencies between the concept of risk assessment of the group of agents C and B and the group R and N of the CBRN family including the lack of the rigorous evaluation of deterministic and stochastic health effects of chemical and biological substances.
Quantum Technology and its Role (Not Only) in the Strategic Concepts of Central European States – Mapping Study
Authors: Oldřich KRULÍK  , Irena TUŠER  , Tomáš KOLOMAZNÍK
Published: November 2024

Quantum technologies represent a new agenda that has the potential to fundamentally change the security environment on aglobal scale. Countries or groups of countries that adopt these technologies before others will be at an advantage. The aim ofthe authors was to provide an overview of the current status of creating conditions for the development of quantum technologies in selected Central European countries (Czech Republic, Slovakia, Austria, Hungary and Slovenia). The studymaps the conceptual, organisational and technical situation in this area, focusing on the five North Atlantic Treaty Organisation member states and the European Union. As a result of the investigation, it is found that the complexity of quantum technologies requires cooperation at two levels. The first level is undoubtedly cooperation between the state sector,scientific organisations, the defence sector and multinational companies. The second level is cooperation between individual states or within international organisations. Regarding the security aspects of these technologies, cooperation based on North Atlantic Treaty Organisation and European Union is crucial. Ensuring technological superiority in the coming years is a big challenge for the United States of America, resp. North Atlantic Treaty Organisation and the European Union.
Pacific white shrimp (Penaeus vannamei) stock enhancement with aquaculture recruits: a case study in the coastal lagoons of southern Sinaloa, Mexico (2019-2020)
Authors: Ruiz-Luna Arturo , Berlanga-Robles César A. , Madrid Vera Juan , Rojas García Carlos R.
Published: November 2024

Laboratory-reared Pacific white shrimp (Penaeus vannamei) postlarvae were released into the Huizache-Caimanero and Cerritos lagoon system (Sinaloa, Mexico) using a stock enhancement approach to improve production and preserve the wild spawning stock. Fifty-two point three million postlarvae were sown, and the system was monitored between June 28 and November 29, 2019. A total of 3844 shrimp ranging from 27 to 170 mm in total length (TL) and 0.2 to 41.2 g in total weight were obtained. Individuals were classified in 5-mm size classes to estimate the length at first maturity (TL50%: 110 mm) as a proxy of the length (age) at which they become part of the breeding stock. The associated relative age (based on the mean postlarvae length) was 80 days, with most of the sampled specimens ranging from 60 to 100 days in age. Molecular analysis of genomic expression was performed to compare the genetic profiles of samples obtained in June 2019, October 2019, and 2012 (reference) and detect possible genetic admixture between hatchery and wild specimens. The catch obtained at the end of the fishing season was >220 t, clearly above the average of the last five fishing seasons. As it was impossible to replicate the study, the results must be taken cautiously. At least one follow-up study is required to confirm the results and discard the possibility that the increase in production was due to natural environmental or biological variability.
Economic diversification and vulnerability in fishing communities of the Baja California Peninsula, Mexico
Authors: Marin-Monroy Elvia Aida , Ojeda-Ruíz Miguel Ángel
Published: November 2024

Where timely information and governance schemes were incorporated, fishery resources were more responsibly used. However, the situation in fisheries remains critical, and new challenges include climate change, pandemic effects, and social conflicts. Planning instruments for productive activities encourage the relevant role of diversification as a mechanism to generate balances between sectors to generate sustainable economic alternatives that contribute to reducing vulnerability in fishing communities and the biological sustainability of resource populations in use. This research analyzes local knowledge and socioeconomic indicators to determine the levels of income dependence on fishing activities and alternative options, such as whale, and bird watching, and sport fishing, according to their potential resources. The selected methods included a primary study through surveys of a representative sample of fishers to understand aspects of their well-being and diversification indices in two selected locations of the Baja California Peninsula. Significant differences in income levels and aspects of social cohesion were found. The locations studied also showed a high concentration rate of fishing activity measured by the Herfindahl-Hirschmann index for economic diversity. This low diversification increases vulnerability and occurs mainly in locations with lower incomes and lacking infrastructure, which shows the need to promote joint work between policymakers, communities, and academies so that they include other productive, feasible, and sustainable activities such as tourist packages, food processing, aquaculture, among others that improve income, as well as fishing that provides them with food security.
Effect of wavelengths on the growth and chemical-proximal composition of diatoms Amphora aff. amoena and Chaetoceros muelleri
Authors: Juárez-Gómez María Luisa , Hayano-Kanashiro Corina , Fimbres-Olivarría Diana
Published: November 2024

Amphora aff. amoena and Chaetoceros muelleri are potential diatoms with good proximal composition and the ability to grow rapidly. Like other microalgae, this composition can be improved by adjusting their culture conditions, such as exposure to different light conditions. However, there is still a need to explore these culture conditions further and their effect on these diatoms. This study aimed to evaluate the chemical-proximal composition of the diatoms A. aff. amoena and C. muelleri under three wavelengths: white (WL) range (400-750 nm), blue (BL) range (430-480 nm), and red (RL) range (595-660 nm), at an irradiance of 200 μmol m-2 s-1 using LED lights. In both species, A. aff. amoena and C. muelleri, the highest cell concentration under WL was: 216,250 and 1,198,125 cells mL-1, respectively. The carbohydrate content was 5.80% for A. aff. amoena and 2.21% for C. muelleri, while protein content was 13.41% for A. aff amoena and 12.31% for C. muelleri. Lipids were found to be most abundant in A. aff. amoena when exposed to RL (37.19%) and C. muelleri (60.48%) when exposed to BL. No significant differences were found in A. aff. amoena under different light conditions.
Responses of the mussel Perumytilus purpuratus (Bivalvia, Mytilidae) to hydrodynamic conditions and the presence of predators
Authors: Carvallo Mabel A. , Riera Rodrigo , Brante Antonio
Published: November 2024

The intertidal mussel Perumytilus purpuratus exhibits phenotypic plasticity in response to predation threats, with these responses influenced by the mussels' perception of predation risk. These adaptations, however, are constrained by energy costs and interactions with environmental factors that may trigger synergistic effects or trade-offs among different fitness traits. In particular, this study focuses on the anti-predatory responses of P. purpuratus against the sea star Meyenaster gelatinosus, examining how the presence of the predator and water flow strength influence these responses. The research was conducted through laboratory experiments, comparing mussels from two distinct localities with varying predation risks posed by M. gelatinosus: Punta Hualpén, where the predator is naturally present, and Coliumo, where it is absent. The anti-predatory responses were assessed by measuring attachment strength, byssus production, and adductor muscle mass in the presence of predator cues. Additionally, potential costs associated with these responses were estimated using the gonadosomatic index as a measure of reproductive investment. The findings indicate that the anti-predatory responses of P. purpuratus are contingent on the mussel's origin, with adhesion strength and byssus production negatively impacting reproductive investment. Moreover, the study highlights the intricate interplay of multiple factors, as evidenced by the complex adaptive mechanisms observed in P. purpuratus. The interaction between predator presence and water flow strength and their combined effects on various traits underscores the need for comprehensive multifactorial experiments to understand these adaptive processes. In conclusion, this study provided valuable insights into the nuanced and site-specific nature of anti-predatory responses in P. purpuratus. The research emphasizes the importance of considering multiple factors and conducting comprehensive experiments to unravel the intricacies of adaptive mechanisms in prey species.
Inclusion of yeast Candida tropicalis and Debaryomyces hansenii in diets for tropical gar (Atractosteus tropicus) juveniles: effect on growth, digestive enzymatic activity, intestinal barrier gene expressions, and gut microbiota
Authors: Pérez Jiménez Graciela M. , De la Rosa García Susana , Martínez Porchas Marcel , Sepúlveda-Quiroz César A. , Garibay Valdez Estefanía , Tovar Ramirez Dariel , Jiménez Martínez Luis D. , Alvarez Villagomez Carina Shianya , Alvarez Gonzalez Carlos A.
Published: November 2024

Including probiotic yeasts, such as Debaryomyces hansenii, in fish diets improves aquaculture production and fish health. Some fish-isolated yeasts, like Candida tropicalis, produce antimicrobial metabolites. However, there have been no reports on their in vivo effects. We evaluated the effects of dietary administration of both yeasts on growth, survival, digestive enzyme activity, expression of intestinal barrier genes, and intestinal microbiota composition in Atractosteus tropicus juveniles. We administered diets with three concentrations of C. tropicalis (104, 106, and 108 CFU g-1), three with D. hansenii (103, 105, and 107 CFU g-1), and a control diet without yeast for 45 days. We also evaluated the antagonistic capacity of both yeasts against fish pathogens in vitro. Results showed that lower doses of C. tropicalis (104 CFU g-1) and D. hansenii (103 CFU g-1) improved growth, survival, and lipase activity. However, C. tropicalis compromised intestinal barrier integrity by reducing zo-1 expression and increasing il-8 expression while altering the microbiota to favor Desulfovibrionaceae. Conversely, D. hansenii enhanced intestinal barrier integrity by increasing the expression of muc-2, zo-1, and il-10 genes and decreasing il-8 expression without altering the microbiota, where Mycoplasma predominated. Both yeasts showed antagonistic activity against pathogens. In conclusion, the dietary inclusion of C. tropicalis did not favor the intestinal health of the fish. Conversely, D. hansenii at a concentration of 103 CFU g-1 is recommended to improve the growth, digestive function, and health of A. tropicus juveniles.
Effects of marine biofloc on the metabolism, hematology, and antioxidant capacity of juvenile red tilapia (Oreochromis sp.) fed commercial diets containing different protein levels
Authors: Martínez-Montaño Emmanuel , Rodríguez-Montes de Oca Gustavo Alejandro , Román-Reyes José Cristóbal , Gómez-Ávila Edgar , Castañeda-Farias Daniel , Frías-Espericueta Martín Gabriel , Salazar-Leyva Jesús Aarón , Hernández Crisantema , López-Peraza Diana Judith , Bañuelos-Vargas Isaura
Published: November 2024

This study evaluated the effects on the growth performance and physiological response (metabolism, hematology, and antioxidant capacity) of the juvenile hybrid red tilapia Oreochromis sp. (initial average weight of 2.82 ± 0.02 g) cultured in seawater with biofloc and fed commercial diets containing 25, 35 and 40% crude protein (P25, P35, and P40, respectively). After seven weeks of bioassay, fish fed P35 and P40 showed no significant differences in weight gain, specific growth rate, and condition factor. The P35 and P40 treatments showed the highest values of growth performance (SGR of 4.85 and 4.43% d-1, respectively) compared to the P25 treatment (4.3% d-1). Otherwise, fish from P35 showed lower activities for metabolic enzymes (ASAT, ALAT, GK, FBPase, G6PD, and FAS) than P40, which suggests that in P35, there was a better use of energy and protein content in the diets. On the other hand, P35 presented values similar to P40 regarding oxidative damage to lipids in the intestinal (5.62 and 5.77 nmol g-1, respectively) and muscle (4.76 and 3.93 nmol g-1, respectively) tissues, but higher than P25 in the liver (1.21 nmol g-1). Finally, the P25 diet triggered a significant decrease in erythrocyte parameters, as well as total protein and albumin in the blood plasma of the fish. In conclusion, marine biofloc allows hybrid red tilapia juveniles to be fed commercial diets with 35% crude protein without compromising their productive performance, antioxidant system, and hematological parameters.
Butterfly community composition along a vegetation gradient in the Sierra Chiquita, Mexico
Authors: Meléndez-Jaramillo Edmar , Sánchez-Castillo Laura , Coronado-Blanco Juana María , Segura-Martínez Ma. Teresa de Jesús , Cantú-Ayala César Martín
Published: November 2024

This study compares the variation of richness, abundance, and diversity of butterfly species for vegetation communities along an elevational gradient and during different seasons in the Priority Region for Conservation of Biodiversity, Sierra Chiquita, located in the northeast of Mexico. We also analyze the influence of environmental variables on the abundance and richness of butterfly species. Seven sampling sites were established based on criteria of vegetation distribution per altitudinal gradient. Sampling was on a monthly basis and carried out in six permanent plots at each site, using an aerial entomological net during November 2015 to October 2016. A total of 38,011 specimens, representing six families and 195 species, were collected. All parameter values showed significant differences across sites, except between thorn forest and gallery forest. Seasonality effect was absent on richness and diversity species; however, for species abundance, the differences between dry season and rainy season were significantly different in each site except for the comparison of thorn forest and gallery forest. The association between the environmental variables and butterfly communities in the elevational gradient was significant, being the dew point, the solar radiation, the canopy leaf area, and the number of flowering plants the most important variables. The present work represents an important contribution of the vegetation communities variation in richness, abundance, and diversity of butterflies in the northeast of Mexico. These results highlight the importance of the conservation of this heterogeneous habitat and establish reference data for the diurnal Lepidoptera fauna of the region.
Leucheria peteroana (Nassauvieae, Asteraceae), a new species of Leucheria endemic to the Andes of Central Chile, and insights into the systematics of Nassauviae
Authors: Lavandero Nicolás , Pérez Fernanda , Pinilla Nicolás
Published: November 2024

A new species, Leucheria peteroanasp. nov., endemic to a restricted area of the Andes of Central Chile, is here described. Using newly sequenced nDNA and cpDNA data, the phylogenetic affinities of Leucheria and closely related taxa within Nassauvieae are revisited. This new species shows a unique set of characters that clearly distinguish it from other species of Leucheria. Phylogenetic analyses place this perennial species close to annual species found in the pre-Andean environments of Central Chile. A detailed description, distribution map, insights about its habitat, conservation status, and photographs are provided.
Acotylea (Platyhelminthes, Polycladida) from the southern and western Iberian Peninsula, with the description of five new species
Authors: Pérez-García Patricia , Gouveia Filipa , Calado Gonçalo , Noreña Carolina , Cervera Juan Lucas
Published: November 2024

Most of the European polyclad species were described after material was collected from the Gulf of Naples, Italy, which was compiled in the renowned monograph of Arnold Lang in 1884. On the other hand, little is known about the diversity of flatworms in the Iberian Peninsula, with 49 recorded species, which are mainly registered in the northern coast of Spain. Moreover, polyclads in Portugal have never been studied before. In our study, specimens of 13 species of acotylean flatworms were collected from the southern and western Atlantic coasts of the Iberian Peninsula. All of the species included here are well documented with colour pictures and histological sections. The geographical distribution of the known species has been updated. Five of the collected species are new to science: Stylochus erytheiussp. nov., S. marimarensissp. nov., Plehnia cascaisensissp. nov., Izmira lusitanicasp. nov., and Emprosthopharynx onubensissp. nov.
Factors Associated With First-Time NCLEX-RN Success at a Predominantly Black Institution
Authors: Collins Elicia S. , Gronka Susan , Foster Victoria , Smiley Lisa , Morgan Rebecca , Buchholz Susan W. , Hooks J. Dwayne
Published: November 2024

Background

Students from underrepresented groups, including those attending predominantly Black institutions, encounter challenges that hinder first-time success on the National Council Licensure Examination for Registered Nurses (NCLEX-RN).

Method

This retrospective, descriptive study included a convenience sample (
N
= 122) of nursing students. Data for students who attempted the NCLEX-RN at three different time periods were used to identify factors associated with passing the NCLEX-RN on the first attempt.

Results

Students who scored 80 or higher in a medical-surgical course were more likely to pass the NCLEX-RN than those who scored below 80.

Conclusion

Students' performance in predictor courses at predominantly Black institutions may determine success on the NCLEX-RN. Students who did not demonstrate success in identified program predictor courses may benefit from additional preparation and support prior to taking the NCLEX-RN.

[
J Nurs Educ
. 2024;63(11):773–776.]
Peer Emotion in Collaborative Simulation Among Nursing Students
Authors: Ngo Thye Peng , Burke Draucker Claire , Barnes Roxie L. , Kwon Kyungbin , Reising Deanna L.
Published: November 2024

Background

The emotional experiences of nursing students are linked to learning outcomes. Peer learning is a key component of nursing education and simulation. However, little is known about the emotions of students in the context of peer learning. This study sought to provide an in-depth description of nursing students' emotional experiences when participating with another peer in a simulation activity.

Method

Data were obtained from a study of peer collaborative clinical decision making in simulation. All data related to emotions were extracted, summarized, and interpreted using thematic analytic techniques.

Results

Six themes were identified: (1) experiencing a multitude of emotions; (2) hiding emotions; (3) suppressing emotions; (4) revealing emotions; (5) perceiving peers' emotions; and (6) absorbing peers' emotions.

Conclusion

This study highlights the importance of peer emotion in collaborative simulation and renders important implications for nursing education.

[
J Nurs Educ
. 2024;63(11):746–754.]
Investigating the Influence of First Principles of Instruction on Trauma Management Skills in Nursing Students
Authors: Chen Jianbang , Lin Zhonghou , Sun Mingyuan , Lin Huan , Liang Tianyu
Published: November 2024

Background

This study aimed to evaluate the effects of first principles of instruction on trauma management skills for undergraduate nursing students.

Method

Two hundred twenty-four nursing students from Fujian Medical University were divided into control and experimental groups. Participants in the experimental group applied first principles of instruction and introduced design modifications to acquire trauma management skills.

Results

Scores for trauma management skills were significantly higher in the experimental group than in the control group. In addition, 89% of students strongly agreed with using first principles of instruction and indicated satisfaction with the teaching mode.

Conclusion

First principles of instruction enhance theoretical understanding of trauma management skills, with significant score differences between experimental and control groups. High student satisfaction underscores the effectiveness of this approach in creating a conducive learning environment. Integrating first principles of instruction holds promise for deeper comprehension and long-term educational success among nursing students.

[
J Nurs Educ
. 2024;63(11):731–736.]
Cognitive Flexibility and Professional Identity in Nursing Students: The Modeling Role
Authors: Galletta Maura , Piras Ilenia , Canzan Federica , Dal Santo Letizia
Published: November 2024

Background

Students' professional identity is essential to build nursing competence. Cognitive flexibility plays a crucial role in developing professional identity, as well as clinical supervisors and academic teachers through role modeling. This study analyzed the role of internship and theoretical modeling in the link between cognitive flexibility and professional identity.

Method

Participants were first-, second-, and third-year nursing students (
n
= 284) at a university in northern Italy. Participants completed an online survey, and multigroup analysis was performed.

Results

Internship modeling was positively associated with professional identity but not for second-year students. Theoretical modeling was not significantly associated with professional identity and cognitive flexibility. Theoretical modeling did not mediate the relationship between cognitive flexibility and professional identity. Clinical internship modeling mediated the relationship between cognitive flexibility and professional identity but not for second-year students.

Conclusion

Internship modeling helps students give sense and coherence to learning, which contributes to their professional identity.

[
J Nurs Educ
. 2024;63(11):764–772.]
Martha Graham, pédagogue malgré elle
Authors: Ghielmetti Marine
Published: November 2024

L’objet de cet article est d’examiner le modèle pédagogique promu par Martha Graham, artiste reconnue pour son œuvre chorégraphique mais aussi pour l’œuvre pédagogique qu’elle développe tout au long de sa carrière. Nous nous intéressons ici plus particulièrement à la période 1950-1970, qui correspond à une période charnière pour le devenir pédagogique et la diffusion de la technique de danse qu’elle crée. Au cours de ces décennies, le charisme de Martha Graham et le concept de vocation présents dans les situations de transmission participent à la mise en place d’un modèle pédagogique qui peut aujourd’hui susciter chez nous un malaise. Pourtant, la technique Graham contient en elle-même des éléments donnant lieu à une transgression possible de la relation pédagogique induite par ce modèle, lui permettant de perdurer dans le temps.
Offrir à ses élèves les moyens de leur autonomie, la démarche pédagogique de Wilfride Piollet
Authors: Adam Nathalie
Published: November 2024

En 1989, j’étais élève en danse classique au Conservatoire national supérieur de musique et de danse de Paris lorsque Wilfride Piollet fut nommée professeure ; je découvris alors une pratique étonnante, fort éloignée de ce que j’avais connu auparavant. Deux ans plus tard, quittant le Conservatoire, je commençai à m’entraîner seule suivant les principes qu’elle nous avait enseignés. Cet article se propose de situer la démarche pédagogique de Wilfride Piollet en relation avec son parcours et ses choix d’artiste-interprète, puis de présenter brièvement son cours. Je partirai de la sensation de déstabilisation éprouvée lorsque je l’ai rencontrée pour faire apparaître les écarts existants entre les cours de danse classique que j’avais suivis jusqu’alors et sa pratique, et je montrerai quels étaient les éléments qui favorisaient la construction d’une autonomie de travail chez ses élèves.
Itinéraire d’un enseignant en danse. Une histoire de rencontres et de questionnements renouvelés
Authors: Panassié Romain
Published: November 2024

Sous forme de témoignage-explicitation, je propose dans cet article de retraverser et d’interroger mon vécu de danseur-pédagogue. Partant d’un retour réflexif, écrit à la première personne, sur mon parcours de formation en danse et mes motivations pour l’enseignement, je partage avec le·la lecteur·rice les questionnements qui m’ont habité depuis l’obtention du diplôme d’État de professeur de danse (DE), et jusqu’à aujourd’hui. Je m’interroge sur l’apport de deux formations en particulier, quant au développement et à l’enrichissement de ma propre démarche pédagogique : le cursus de quatre années en notation du mouvement, système Benesh, au Conservatoire national supérieur de musique et de danse de Paris (CNSMDP) d’une part, et le programme de trois années en Analyse fonctionnelle du corps dans le mouvement dansé (AFCMD) au Pôle Aliénor de Poitiers, d’autre part. Je reviens également sur plusieurs rencontres et expériences de terrain qui ont jalonné mon parcours professionnel : la collaboration avec Sophie Rousseau autour des relations dynamiques entre danse et musique, différents projets menés en tant que notateur-reconstructeur, la rencontre avec les danseur·ses du collectif Les Carnets Bagouet et de la Trisha Brown Dance Company.