bluuebunny/crossref_metadata_2025 huggingface dataset:
Analisis Budaya Organisasi PT XYZ Pascamerger
Authors: Petricia Yanna
Published: September 2023

Penelitian ini membahas tentang analisis budaya organisasi PT XYZ pascamerger. PT XYZ terbentuk dari tiga perusahaan yaitu PT X, PT Y, dan PT Z. Tergabungnya tiga perusahaan tersebut, membentuk berbagai tantangan dalam menciptakan budaya organisasi yang positif. Dalam menganalisis permasalahan ini, peneliti menggunakan teori budaya organisasi untuk melihat bagiamana upaya PT XYZ dalam membentuk budaya perusahaan, serta apa saja faktor pendukung dan penghambat dalam menciptakan budaya organisasi. Penelitian ini menggunakan metode kualitatif dengan pendakatan deskriptif. Hasil penelitian menunjukan bahwa PT XYZ hanya dapat memenuhi dua asas yang terdapat dalam budaya organisasi yang positif, yaitu asas empiris dan asas prestasi. Sedangkan, enam asas lainnya, asas tujuan, asas keunggulan, asas konsesus, asas kesatuan, asas keakraban, dan asas integritas tidak cukup kuat di dalam budaya organisasi PT XYZ pascamerger. Penelitian ini merupakan bagian dari tesis peneliti yang tidak dipublikasikan.
Young adults and multisensory time perception: Visual and auditory pathways in comparison
Authors: Cantarella Giovanni , Mioni Giovanna , Bisiacchi Patrizia Silvia
Published: September 2023

The brain continuously encodes information about time, but how sensorial channels interact to achieve a stable representation of such ubiquitous information still needs to be determined. According to recent research, children show a potential interference in multisensory conditions, leading to a trade-off between two senses (sight and audition) when considering time-perception tasks. This study aimed to examine how healthy young adults behave when performing a time-perception task. In Experiment 1, we tested the effects of temporary sensory deprivation on both visual and auditory senses in a group of young adults. In Experiment 2, we compared the temporal performances of young adults in the auditory modality with those of two samples of children (sighted and sighted but blindfolded) selected from a previous study. Statistically significant results emerged when comparing the two pathways: young adults overestimated and showed a higher sensitivity to time in the auditory modality compared to the visual modality. Restricting visual and auditory input did not affect their time sensitivity. Moreover, children were more accurate at estimating time than young adults after a transient visual deprivation. This implies that as we mature, sensory deprivation does not constitute a benefit to time perception, and supports the hypothesis of a calibration process between senses with age. However, more research is needed to determine how this calibration process affects the developmental trajectories of time perception.
Geotechnical Properties of Foundation Subsoils in Parts of Port Harcourt City, Obio/Akpor and Ikwerre Local Government Area, Rivers State, Nigeria
Authors: Udom G.J , John P.N
Published: September 2023

The study was carried out with the objectives of determining the stratification, geotechnical index properties of the soils in part of Port Harcourt city and Obio/Akpor local Government Area, Rivers state. Field Exploration and laboratory studies of soils samples were obtained from 0-20.25m deep. Subsurface soil profiles were delineated followed by determination of their index and mechanical properties, including Atterberg limits, particle sizes distribution, undrained shear strength, shear box test and consolidation coefficient. Results reveal an overlying light brown sandy clay, soft to firm consistency, clay thickness vary from 9.0 to 13.5m. Beneath this overburden lie yellowish brown to light grey fine to medium to coarse grained sand, loose to medium dense to dense consistency and poorly graded sand, thickness vary from 6.75 to 11.25m. The clays show low to intermediate clay plasticity (CL-CI). The shear strength parameters of these c- soil gave values range of 40-60KN/m2 . Allowable bearing capacities for the shallow foundation and bored pile foundation analysis was also carried out for the soil profiles with diameter 306, 406, 460 and 600mm for the deep foundation for various study areas were calculated.
Palatability of the Feeds Developed from Senegalia Mellifera Encroacher Bush when Fed to Weaned Damara Sheep
Authors: Ndozi Grace , Zulu Africa
Published: September 2023

Feeds produced from Senegalia mellifera species have not been considered as an alternative feed to livestock during the dry season when rangelands cannot provide quality grazing resources. This study assessed the palatability of feeds developed from Senegalia mellifera when fed to weaned Damara sheep. A Randomized Complete Block Design with sex as the blocking factor was used for the palatability trial with four diets which were randomly allocated to growing sheep. Sixteen male and female weaned Damara sheep of four to five months of age were confined in individual pens of 2.5m x 3m. The trial consisted of a 5-day adaptation period followed by a 12-day trial period. Formulated diets differed (P 0.05) in their DM, OM, EE, NDF, ADF, and ash. The control diet had a higher (P 0.05) NDF concentration compared to diets with 4% urea or 4% NaOH. Feed intake was influenced (P 0.05) by the day and diet x day interactions. Urea (8%) and NaOH (4%) treatments improved the chemical composition and palatability for S. mellifera feed, but the reaction conditions, including chemicals, concentration, moisture content, pH, and duration, need to be optimized to allow greater reduction of the lignin concentration.
Technical Efficiency in Maize Crop Production by Small-Scale Farmers in Central Agricultural Zone of Cross River State, Nigeria
Authors: Osim O. O , Oniah M.O.
Published: September 2023

The study determined resource use efficiency in maize crop production by small-scale farmers in the Central Agricultural Zone of Cross River State, Nigeria. It specifically investigated the socioeconomic characteristics and technical efficiency of resources used by small-scale farmers in rainfed maize production in the area. Data collected were analyzed using descriptive statistics such as mean, frequency distribution tables, stochastic frontier model, gross margin analysis and the Likert scale model. The results of the descriptive statistics revealed that maize production in the study area is predominately carried out by people within the age bracket of 21-50 years. On sex distribution, the study revealed that maize production was carried out by both men and women with females taking the production lead at 58% as compared to 41% in the case of males. The study revealed that 57% of respondents were married, 36% were single, and 2% and 4% were divorced and separated respectively. The study also shows that maize farmers in the study area had family sizes ranging between 5-15 members in a household. The educational level revealed that maize farmers in the study area had some form of formal education with good farming experience. Also, the technical efficiency (TE) of the respondents in the study area was found to be less than (<) 1.0, indicating that all farmers were producing below the maximum efficiency frontier. This study also reveals that maize production if efficiently managed is profitable in the study area. The constraints in maize production as perceived by the study include; inadequate capital, lack of access to credit, lack of government support, lack of improved planting materials and poor market. This study recommends that male farmers should be encouraged to participate in maize cultivation as a means to augment their income and to further improve their standard of living. Maize farmers are advised to be more technically efficient in the use of their farm productive resources to increase rainfed maize production since all farmers were producing below the maximum efficiency frontier.
Impression Management Strategies and Organizational Culture of Manufacturing Companies in Anambra State, Nigeria
Authors: Dimgba Chidinma Martha , Ikon Michael A. , Ugiagbe Maxwell
Published: September 2023

Organizations are faced with the problem of how employees promote themselves in order to give the organization a good identity that will build the image the organization intends to get. The broad objective of the study is to determine the type of relationship that exists between impression management strategies and organizational culture of manufacturing companies in Anambra State. Finding the relationship between self- promotion and organizational identity of manufacturing companies in Anambra State is the specific objective of study. The work was anchored on Social Identity Theory by Tijen. The population of the study is 183 workers and Pearson Moment Correlation Co-efficient was used to analyze the data. The finding showed that there is a significant relationship between self- promotion and organizational identity of manufacturing companies in Anambra state (Cal.r947 >Crit.r. 195). The study recommends that the focused manufacturing companies should adopt good strategies, incentives, and good ethical training should be introduced to encourage employees deliver positive organizational values to the public.
Medidas de Protección Aplicadas a Mujeres Víctimas de Violencia de Género en la Provincia el Oro Año 2021 – 2022.
Authors: Macas Granda Jennifer Elizabeth , Sarie Añazco Ángel Andrés , Ramírez López Guido Miguel
Published: September 2023

El presente artículo se sustenta en la búsqueda de información relevante, respondiendo a un estudio bibliográfico sobre la violencia de género, la cual está arraigado a desigualdades, la falta de comprensión sobre los derechos atribuye a justificar la violencia como algo normal que debe someterse la mujer por obediencia. Los casos se vulneran por la falta de recursos y acceso o conocimiento de los sustentos legales. El tipo de investigación es documental con un enfoque cualitativo, cuya base son los métodos: lógico, analítico y exegético, con el propósito de analizar la eficacia y alcance de las medidas de protección aplicadas a mujeres víctimas de violencia de género, en conformidad con el ordenamiento jurídico ecuatoriano. En la actualidad la prevalencia de cifras de violencia no cesa en ninguna nación. Los hallazgos indican que Bolivia encabeza la lista, Ecuador se encuentra entre los primeros, dado que aún existe tabús y temor por denunciar. En conclusión, la violencia de género es un tema de debate, ya que existe la posibilidad del que acusado sea inocente y que el inocente sea acusado, así mismo como la imposición de medidas de protección porque la victima amerita recibir la ayuda necesaria para que este emocionalmente estable.
Modelo de gestión administrativa - presupuestaria, ejecución del plan anual de contratación: Caso Universidad Técnica de Babahoyo 2022.
Authors: Bersoza Yépez Félix Arnaldo , Boada Villa Luis Javier
Published: September 2023

El objetivo de la investigación es Desarrollar un modelo de Gestión Administrativa-presupuestaria para la ejecución del Plan Anual de Contratación en la Universidad Técnica de Babahoyo; partiendo desde la ejecución del presupuesto y plan anual de contratación, La investigación es de enfoque cuantitativo, tipo aplicada, nivel explicativo y diseño propositivo; se trabajó con una población muestra de 31 administrativos, el análisis de datos se realizó mediante estadística descriptiva e inferencial, al realizar la investigación utilizando la encuesta al procesar los datos se obtiene que es imprescindible la creación de un modelo de gestión administrativa enfocados en la ejecución del plan anual de contratación, determinando que se debe cumplir con los objetivos institucionales y las leyes, se validó la investigación obteniendo una confiablidad del alfa de Cronbach general de 0,958 de 34 elementos. Al aplicar el coeficiente Rho de Spearman podemos observar que el coeficiente de correlación entre la variable gestión administrativa presupuestaria y ejecución del plan anual de contratación es de 0,73 siendo buena, se concluye que es aplicable el modelo de gestión administrativa presupuestaria para la ejecución del Plan anual de contratación al obtener una eficiencia de 75.05% en la variable de gestión administrativa presupuestaria y en la variable ejecución del plan anual de contratación una eficiencia de 73,39%.
Viabilidad de Lactobacillus Pentosus tras la Producción y Extracción de Biosurfactantes
Authors: Guadalupe Bustos Vázquez Guadalupe , Arcos Bustos Ulises Orlando , Trujillo Ramírez Daniel , Moldes Menduiña Ana Belén , Cruz Freire José Manuel , Hernández Robledo Verónica
Published: September 2023

Células de Lactobacillus pentosus (L. pentosus), fueron sometidos a un proceso de extracción secuencial con solución salina tamponada con fosfato (PBS) para estudiar la capacidad de la célula de este microorganismo y regenerar la presencia de biosurfactantes después de un proceso de extracción. La mayoría de las células de los biosurfactantes (89.5 %) se obtuvieron después de una primera etapa de extracción, observando que las células no tienen la capacidad inmediata de inducir la formación de biosurfactantes adicionalmente, aunque el proceso de extracción casi no afecta la viabilidad celular. Por otra parte, cuando la misma biomasa fue sometida a cuatro procesos de fermentación secuencial, con cuatro extracciones consecutivas de biosurfactantes, L. pentosus recuperó su capacidad para producir más biosurfactantes, observando un aumento en el rendimiento de biomasa/biosurfactante, después del 3º ciclo de fermentación. La concentración total de biosurfactante obtenida tras 3 fermentaciones consecutivas fue de 27 g/L, observando que en presencia de medio fresco la biomasa del microorganismo L. pentosus puede ser reciclada para producir nuevos biosurfactantes con mayores rendimientos. El objetivo de este estudio se basó principalmente en la viabilidad del L. pentosus tras un proceso de producción y posterior extracción de biosurfactantes.
¿P es igual a NP? Respuesta del Milenio. Método para Resolver Rompecabezas con el Algoritmo de Dios
Authors: Bolívar Barrios Nilson Rafael
Published: September 2023

La complejidad de cualquier tipo de problemas puede ser desde lo más fácil hasta infinitamente complejo, hay problemas donde existen atajos con los algoritmos de Dios y se pueden resolver en tiempo polinómico en este caso NP está en P, y hay problemas que con los algoritmos de Dios no se resuelve en tiempo polinómico en este caso NP no está en P, cuando tengamos un problema lo resolveremos con el algoritmo más óptimo o con el algoritmo de Dios porque obviamente no existe un algoritmo mejor que el algoritmo de Dios, pueden existir 1, 2 o más algoritmo de Dios que resolverán el mismo problema con la misma cantidad de pasos, es imposible encontrar un algoritmo que resuelva el problema en menos pasos que el algoritmo de Dios. Obviamente si un algoritmo resuelve el problema en más pasos que el algoritmo de Dios entonces no es el algoritmo de Dios. Como resultado utilizamos el mejor algoritmo que es el algoritmo de Dios y observamos en cuantos pasos se resuelve este problema, si son muchos pasos o pocos pasos y tomamos la decisión si vale la pena dedicarle tiempo en resolver ese problema. Es imposible resolver el problema en menos pasos que la cantidad de pasos del algoritmo de Dios.
Certificación y Recertificación de los Fisioterapeutas y/o Kinesiologos en Panamá
Authors: Massiel Guerra L. Carol
Published: September 2023

Esta investigación nace de la necesidad de conseguir información acerca de los fisioterapeutas y/o kinesiologos en Panamá, como ha sido su génesis; del total de fisioterapeutas idóneos se le aplicó un instrumento de recolección de datos al 16% de esta población para poder determinar formación académica y la necesidad de crecimiento en áreas de especialidad. Adicional, se busca determinar el grado de conocimiento acerca de la ley 43 de 2004 (De 21 de julio de 2004) del Régimen de Certificación y recertificación de fisioterapeutas y/o Kinesiólogos en Panamá;y que a pesar que data de casi dos decadas, aun carece de reglamentación. Siendo un estudio descriptivo se procura buscar conocimiento y características de la certificación y recertificación necesaria para estos profesionales. Para esto se aplicó un instrumento de recolección de datos a los Fisioterapeutas y/o kinesiologos que recgen la información necesaria para  determinar necesidad en los procesos de certificación establecidos por ley. Tomando en consideración que estos procesos lo que buscan es contribuir a mejorar del sistema de atención, estimular la educación permanente, que a su vez mejorará la capacidad de prestar un mejor servicio a la sociedad. Los resultados son interesantes pues son el fundamento que brindará la posibilidad que universidades puedan ofertar especialidades de interés para este grupo de profesionales
Responsabilidad Social Universitaria: un Estudio Entre Estudiantes de la Escuela Profesional de Educación Inicial y Primaria 2021
Authors: Monroy-Correa Graciela , Chuye Yolanda , Berrospi Valdivia Mariela
Published: September 2023

La investigación tiene por objetivo establecer las diferencias entre la Responsabilidad Social Universitaria percibida por los estudiantes de las escuelas profesionales de Educación Inicial y Educación Primaria de una universidad pública de Lima. La investigación responde a un enfoque cuantitativo y nivel descriptivo. El diseño es de tipo de no experimental comparativo. La población estuvo conformada por 105 estudiantes de la Escuela Profesional de primaria y 130 de Inicial. Se realizó un muestreo por conveniencia participando 53 estudiantes de la Escuela de Primaria y 43 de la Escuela de Inicial. Para el recojo de   información se emplearon dos instrumentos elaborados por Schwalb et.al (2009). El primer instrumento denominado Formación profesional y ciudadanía y el            segundo Participación social, cada uno con 10 ítems. Los resultados demuestran que existen diferencias significativas entre el grupo de estudiantes de la Escuela Profesional de Educación Inicial y la Escuela Profesional de Educación Primaria respecto a su percepción sobre la Responsabilidad Social Universitaria. Ello, nos permite concluir que existe una escasa información, divulgación y acciones de Responsabilidad Social Universitaria en la Escuela Profesional de Educación Primaria e Inicial siendo necesario establecer lineamientos orientadores para la incorporación de la RSU a nivel curricular, en los Planes de estudio y sílabos, además de incorporar estrategias como el ABP y trabajo interdisciplinar.
Review of high temperature materials
Authors: Findik Fehim
Published: September 2023

High-temperature materials play a significant role in sustainable engineering across various industries and applications. Sustainable engineering aims to design, develop, and implement solutions that minimize environmental impact, enhance resource efficiency, and promote long-term sustainability. The availability of substances that can be used efficiently at high temperatures allows pushing the limits of possible measurable demands. These substances include ceramics, polymers and metals. It is used in elevated temperature materials, aircraft and space structures, and space exploration. In this study, high temperature metals are classified including superalloys, platinum and refractory metals, refractory metals such as W, Nb, Mo, Ta. Also, ceramic materials are high temperature materials. Ceramics are criticized to use in elevated temperature due to their high hardness, extraordinary strength in compression, excellent thermal stability, short-term thermal extension and tremendously great melting temperature. Ceramics that encounter these standards are carbides and borides of Zr, Nb, Ta, Ti and Hf. In addition, steel, nickel and copper alloys used in aircraft engines, space shuttles and turbine blades from aerospace materials were investigated. In addition, powder metallurgy and sintering techniques, which are the most widely used production methods of high temperature materials, are emphasized. In this study, important characterization techniques for analyzing some sample surface and subsurface properties are reviewed. Again, in this study, the use of AES, XPS, SSIMS and LEED methods for the chemical examination of surfaces is discussed. Optical, electron, and scanning probe microscopy is used for pictorial inspection of inspection specimens and structures, obtaining data on surface, shape, colors, and numerous additional physical properties. Here, AFM, SEM, TEM, EDX, FIB and EMP methods are discussed. Among the material analysis devices, XRD, x-ray fluorescence spectrometry, low energy electron diffraction, neutron diffraction and electron microprobe devices were examined.
Optimization of Process Parameters of Immobilized Escherichia Coli for Cyclodextrin Production
Authors: Nur Nadia Mohd Zakaria  , Rohaida Che Man  , Siti Zubaidah Sulaiman  , Siti Kholijah Abdul Mudalip  , Nor Hasmaliana Abdul Manas  , Laura Navika Yamani
Published: September 2023

The growing interest toward cylclodectrin (CD) application in industries is due to its unique structure that able to form inclusion complexes with substances. However, the problems arise during the CD synthesis using the commercial enzyme (cyclodextrin glucanotransferase) are low production rate and the process is expensive. Hence, cell immobilization system was used. The objective of this study is to optimize the process parameters using Response Surface Methodology to increase the CD production of the immobilized cell. High CD production was achieved after the optimization process. The reusability of immobilized cell also can be reuse up to six cycles using the optimized parameters. The findings propose that optimization process increased the CD production and made it more valuable for industrial application.
A Search for Extraterrestrial Technosignatures in Archival FAST Survey Data Using a New Procedure
Authors: Wang Yu-Chen , Tao Zhen-Zhao , Zhang Zhi-Song , Lyu Cheqiu , Zhang Tingting , Zhang 张 Tong-Jie 同杰 , Werthimer Dan
Published: September 2023

The search for extraterrestrial intelligence (SETI) commensal surveys aim to scan the sky to find possible technosignatures from an extraterrestrial intelligence (ETI). The mitigation of radio frequency interference (RFI) is an important step, especially for the most sensitive Five-hundred-meter Aperture Spherical radio Telescope (FAST), which can detect more weak RFI. In this paper, we propose several new techniques for RFI mitigation and use our procedure to search for ETI signals from the archival data of FAST’s first SETI commensal survey. We detect the persistent narrowband RFI by setting a threshold of the signals’ sky separation and detect the drifting RFI (and potentially other types of RFI) using the Hough transform. We also use the clustering algorithms to remove more RFI and select candidates. The results of our procedure are compared to the earlier work on the same FAST data. We find that our methods, though relatively simpler in computation, remove more RFI (99.9912% compared to 99.9063% in the earlier work) but preserve the simulated ETI signals, except for those (5.1%) severely affected by the RFI. We also report more interesting candidate signals, about a dozen of which are new candidates that were not previously reported. In addition, we find that the proposed Hough transform method, with suitable parameters, also has the potential to remove the broadband RFI. We conclude that our methods can effectively remove the vast majority of the RFI while preserving and finding the candidate signals that we are interested in.
Dynamical Hotness, Star Formation Quenching, and Growth of Supermassive Black Holes
Authors: Hong Hui , Wang Huiyuan , Mo H. J. , Zhang Ziwen , Chen Guangwen , Luo Wentao , Wang Tinggui , Li Pengfei , Li Renjie , Yao Yao , Jiang Aoxiang
Published: September 2023

A stellar system is dynamically hot when its kinetic energy is dominated by random motion represented by the velocity dispersion σ
hot. We use MaNGA data to obtain the inner and outer dispersion of a galaxy, σ
in and σ
out, to characterize its dynamical status and study its connection with star formation quenching and the growth of its supermassive black hole (SMBH). We divide galaxies into fully quenched (FQGs), partially quenched (PQGs), and fully star-forming (FSGs) populations, and identify quenched central cores (QCCs) in PQGs. The galaxy distribution in (σ
in/σ
hot)–(σ
out/σ
hot) diagram is L-shaped, consisting of a horizontal sequence (σ
out/σ
hot ∼ 0) and a vertical sequence (σ
in/σ
hot ∼ 1). FQGs and QCCs are located at the top of the vertical sequence, σ
out/σ
hot ∼ 1, and are thus dynamically hot over their entire bodies. PQGs reside along the vertical sequence, so they have hot centers but cold outskirts. FSGs are diverse and can be found in both sequences. Galaxy structural properties, star formation, and AGN activities make a transition along the horizontal sequence at σ
in/σ
hot ∼ 0.5, and along the vertical sequence at σ
out/σ
hot ∼ 0.5. The fractions of optical AGNs and barred galaxies increase rapidly in the first transition and decline rapidly in the second; radio galaxies are located at the top of the vertical sequence. Our results demonstrate that star formation quenching and SMBH growth are effective only in dynamically hot systems. A simple model along this line can reproduce the observed SMBH scaling relations. We discuss how secular processes and strong interactions can make a system dynamically hot, and lead to the SMBH growth and star formation quenching.
Inferring the Solar Meridional Circulation Flow Profile by Applying Bayesian Methods to Time–Distance Helioseismology
Authors: Herczeg Aleczander , Jackiewicz Jason
Published: September 2023

Mapping the large-scale subsurface plasma flow profile within the Sun has been attempted using various methods for several decades. One such flow in particular is the meridional circulation, for which numerous studies have been published. However, such studies often show disagreement in structure. In an effort to constrain the flow profile from the data, a Bayesian Markov chain Monte Carlo framework has been developed to take advantage of the advances in computing power that allow for the efficient exploration of high-dimensional parameter spaces. This study utilizes helioseismic travel-time difference data covering a span of 21 years and a parameterized model of the meridional circulation to find the most likely flow profiles. Tests were carried out on artificial data to determine the ability of this method to recover expected solar-like flow profiles, as well as a few extreme cases. We find that this method is capable of recovering the input flows of both single- and double-cell flow structures. Some inversion results indicate potential differences in meridional circulation between the two solar cycles in terms of both magnitude and morphology, in particular in the mid-convection zone. Of these, the most likely solutions show that solar cycle 23 has a large single-celled profile, while cycle 24 shows weaker flows in general and hints toward a double-celled structure.
Hybrid Simulation and Quasi-linear Theory of Bi-Kappa Proton Instabilities
Authors: López R. A. , Yoon P. H. , Viñas A. F. , Lazar M.
Published: September 2023

The quasi-steady states of collisionless plasmas in space (e.g., in the solar wind and planetary environments) are governed by the interactions of charged particles with wave fluctuations. These interactions are responsible not only for the dissipation of plasma waves but also for their excitation. The present analysis focuses on two instabilities, mirror and electromagnetic ion cyclotron instabilities, associated with the same proton temperature anisotropy T
⊥ > T
∥ (where ⊥, ∥ are directions defined with respect to the local magnetic field vector). Theories relying on standard Maxwellian models fail to link these two instabilities (i.e., predicted thresholds) to the proton quasi-stable anisotropies measured in situ in a completely satisfactory manner. Here we revisit these instabilities by modeling protons with the generalized bi-Kappa (bi-κ power-law) distribution, and by a comparative analysis of a 2D hybrid simulation with the velocity-moment-based quasi-linear (QL) theory. It is shown that the two methods feature qualitative and, even to some extent, quantitative agreement. The reduced QL analysis based upon the assumption of a time-dependent bi-Kappa model thus becomes a valuable theoretical approach that can be incorporated into the present studies of solar wind dynamics.
Can Biodiversity Data Scientists Document Volunteer and Professional Collaborations and Contributions in the Biodiversity Data Enterprise?
Authors: Stevenson Robert , Ellwood Elizabeth R. , Brenton Peter , Flemons Paul , Gerbracht Jeff , Hochachka Wesley , Loarie Scott , Seltzer Carrie
Published: September 2023

The collection, archiving and use of biodiversity data depend on a network of pipelines herein called the Biodiversity Data Enterprise (BDE) and best understood globally through the work of the Global Biodiversity Information Facility (GBIF). Efforts to sustain and grow the BDE require information about the data pipeline and the infrastructure that supports it. A host of metrics from GBIF, including institutional participation (member countries, institutional contributors, data publishers), biodiversity coverage (occurrence records, species, geographic extent, data sets) and data usage (records downloaded, published papers using the data) (Miller 2021), document the rapid growth and successes of the BDE (GBIF Secretariat 2022). Heberling et al. (2021) make a convincing case that the data integration process is working.

The Biodiversity Information Standards' (TDWG) Basis of Record term provides information about the underlying infrastructure. It categorizes the kinds of processes*1 that teams undertake to capture biodiversity information and GBIF quantifies their contributions*2 (Table 1). Currently 83.4% of observations come from human observations, of which 63% are of birds. Museum preserved specimens account for 9.5% of records. In both cases, a combination of volunteers (who make observations, collect specimens, digitize specimens, transcribe specimen labels) and professionals work together to make records available.

To better understand how the BDE is working, we suggest that it would be of value to know the number of contributions and contributors and their hours of engagement for each data set. This can help the community address questions such as, "How many volunteers do we need to document birds in a given area?" or "How much professional support is required to run a camera trap network?" For example, millions of observations were made by tens of thousands of observers in two recent BioBlitz events, one called Big Day, focusing on birds, sponsored by the Cornell Laboratory of Ornithology and the other called the City Nature Challenge, addressing all taxa, sponsored jointly by the California Academy of Sciences and the Natural History Musuems of Los Angeles County (Table 2). In our presentation we will suggest approaches to deriving metrics that could be used to document the collaborations and contribution of volunteers and staff using examples from both Human Observation (eBird, iNaturalist) and Preserved Specimen (DigiVol, Notes from Nature) record types. The goal of the exercise is to start a conversation about how such metrics can further the development of the BDE.
Stratigraphie und Korrelation der Quadersandsteine der oberen Elbtal-Gruppe (Mittelturonium–Unterconiacium, Sächsisches Kreidebecken) – Resümee und neue Ansätze
Authors: Niebuhr Birgit
Published: September 2023

Die für die Sächsische Schweiz charakteristischen massigen Sandsteine der oberen Elbtal-Gruppe (Mittelturonium–Unterconiacium) wurden syntektonisch von der aufsteigenden Lausitz im Nordosten geschüttet und reichen bis Pirna, wo sie mit dünneren, tonig-mergeligen Zwischenschichten wechsellagern. Für die rechtselbischen Sandsteine der Sächsischen Schweiz erarbeitete Lamprecht (1928, 1931) ein petrographisch-morphologisches Gliederungsschema, dem Seifert (1955) die wechselhaften lithostratigraphischen Einheiten des faziellen Übergangsgebietes bei Pirna gegenüberstellt. Diese Korrelation hat sich in den letzten Jahren durch eigene Arbeiten aufs Feinste bestätigt, wurde aber zwischenzeitlich von dem Mibus’schen Gliederungsschema in den Hintergrund gedrängt. Allerdings demonstrieren Bohrungen in der Umgebung von Pirna eindeutig, dass die Korrelation von Mibus (1975) nicht korrekt ist. Biostratigraphisch konnten in den letzten Jahren erstmals die Basis des Mittelturoniums (mit Collignoniceras woollgari, Mytiloides subhercynicus und M. hercynicus), des Oberturoniums (mit Inoceramus stuemckei) und des Coniaciums (mit Cremnoceramus waltersdorfensis waltersdorfensis) sowohl in der Mergelfazies, der Übergangsfazies als auch in den massigen Sandsteinen der Sächsischen Schweiz definiert werden. Im Mittel- bis Oberturonium lassen sich zwei Sedimentationszyklen von jeweils 810.000 Jahren nachweisen. Die Kreide-Sedimente sind heute 2–3° nach Nordosten senkrecht zur Lausitzer Überschiebung und unter 1° nach Nordwesten parallel zu ihr geneigt. So reihen sich entlang der Elbe die Steinbrüche der berühmten Werksandsteine von der tschechischen Grenze über die Königsberger Elbschleife (Mittelquader der Schmilka-Formation, Unter- bis unteres Mittelturonium) bis nach Pirna (Pirnaer Oberquader / Sandstein c3 der obersten Postelwitz-Formation, mittleres Oberturonium) ungestört aneinander. Die Werksandsteine der Schrammstein-Formation (oberes Oberturonium bis Unterconiacium) stehen in Landbrüchen an.
Lalla et Émile Vandervelde : deux trajectoires au service du socialisme belge au début du xx e siècle
Authors: Elmer Margot , Vermandere Martine
Published: September 2023

Tandis qu’Émile Vandervelde est une personnalité centrale du socialisme belge et international au xx e  siècle, sa première épouse entre 1901 et 1921, Charlotte Helen Speyer, dite « Lalla », demeure une figure méconnue des réseaux féministes bruxellois. Cet article entend éclairer la trajectoire individuelle de ces deux protagonistes à la lumière de leur union et des nombreuses influences réciproques qui en ont découlé. L’analyse de ce mariage interroge également de nombreuses thématiques du socialisme européen au tournant du siècle, comme son rapport à la bourgeoisie, à la lutte féministe ainsi qu’à l’émergence de l’éducation populaire.
« Son œuvre autant que la mienne »
Authors: Fabre Mélanie
Published: September 2023

Persuadée que l’avenir du prolétariat réside dans l’éducation de ses enfants, Madeleine Vernet (1878-1949) fonde en 1906 un orphelinat où elle recueille les enfants des classes populaires, qu’elle ne peut se résigner à abandonner à la charité catholique ou à l’Assistance publique. Dès les premiers mois d’existence de l’Avenir social, Louis Tribier (1884-1954), un militant qu’elle a rencontré dans une université populaire parisienne, se propose de l’aider dans sa tâche quotidienne. Venu pour l’été, il y restera 17 ans et fondera une famille avec celle qui, de compagne de lutte, est devenue sa compagne de vie. Victimes de la guerre fratricide entre socialistes et communistes, Madeleine Vernet et Louis Tribier quittent l’orphelinat en 1923 et poursuivent par d’autres moyens leur lutte commune jusqu’au seuil de la Deuxième Guerre mondiale, au croisement du pacifisme, de la libre-pensée, du féminisme et du socialisme.
Produire l’auto-engagement au travail. Modalités du travail d’organisation dans une start-up en croissance
Authors: Flécher Marion
Published: September 2023

Alors que de plus en plus d’entreprises cherchent à moderniser leurs pratiques managériales en s’inspirant du modèle organisationnel des start-up, on en sait encore peu sur la manière dont le travail est concrètement organisé au sein de ces jeunes entreprises innovantes. À partir d’une enquête ethnographique menée par observation participante dans une start-up en hypercroissance, cet article se propose d’ouvrir la boîte noire de ces entreprises pour rendre compte du travail d’organisation qui y est déployé et de ses effets sur le travail et les travailleurs. Notre enquête montre notamment comment l’accent mis sur la proximité relationnelle, le bien-être au travail, l’auto-gestion et la responsabilité des travailleurs et travailleuses permet de produire des formes d’engagement au travail qui sont d’autant plus efficaces qu’elles viennent de l’auto-contrainte de ces derniers. Cet article met également en évidence les conséquences de la financiarisation de ces entreprises sur les pratiques managériales et le travail d’organisation qui, sous l’effet de la croissance rapide des effectifs et de la pression accrue des actionnaires, deviennent plus formels, plus hiérarchiques et davantage centrés sur la productivité, ce qui tend à dégrader les conditions de travail, mais également les relations de travail.
Les intérimaires, des travailleurs surexposés aux accidents du travail
Authors: Scalvinoni Benoît , Montcharmont Laurence , Belkacem Rachid
Published: September 2023

Cet article s’appuie sur les résultats de deux enquêtes exploratoires sur les conditions de travail des intérimaires. Il montre que les pratiques de détachement et les caractéristiques des missions expliquent une forte vulnérabilité de ces travailleurs aux accidents de travail et aux maladies professionnelles. Ces travailleurs, très souvent détachés dans l’urgence, doivent affronter des contextes de travail différents et évolutifs et être opérationnels rapidement. Cet article montre alors la difficulté qu’ont les intérimaires à se constituer des marges de liberté dans leur travail afin de se prémunir contre des risques d’accidents du travail. En effet, la faible durée et la discontinuité des missions d’intérim ne favorisent pas les apprentissages, empêchant ou limitant l’accumulation d’expériences nécessaires pour se protéger contre de tels risques.
Treatment of Calcific Tendonitis of the Rotator Cuff: An Updated Review
Authors: Avendano John P. , Pereira David
Published: September 2023

Rotator cuff calcific tendonitis (RCCT) is a disorder that can greatly impair patients' quality of life. A literature review was conducted to find the most effective and newest treatments for RCCT. PubMed and Cochrane Review databases were searched, without strict inclusion/exclusion criteria, for peer-reviewed articles between 1941 and 2021 that discussed RCCT etiology and treatments. If nonoperative measures (non-steroidal anti-inflammatory drugs, physical therapy, and corticosteroids) are unsuccessful, other options include extracorporeal shockwave therapy, ultrasound-guided injection techniques, and minimally invasive surgery. Because RCCT can resolve spontaneously, patients should progress to invasive options only if conservative first-line treatments have failed. [
Orthopedics
. 2023;46(6):e326–e332.]
The Utility of the Standardized Letter of Recommendation for Orthopedic Surgery Residency Applicants: A Systematic Review
Authors: Gordon Adam M. , Mont Michael A. , Choueka Jack
Published: September 2023

Despite widespread adoption for evaluating residency candidates, few studies have evaluated the orthopedic standardized letter of recommendation (SLOR). A systematic review using PubMed, Embase, and Web of Science was performed in June 2022. Study design and results from SLOR investigations were compiled. Common outcomes studied were summative rank statement scores and SLOR individual domains. Applicants were rated ranked to match or in the top one-third of rank lists in non-normally distributed frequencies. The association of summative rank statement score with match outcome was rarely studied. Applicants' ratings skew positively, the utility is reportedly limited, and influence on match outcome has been inadequately studied. [
Orthopedics
. 2024;47(1):e1–e5.]
Acclimating Nursing Students After the Pandemic: “It's ASNAP!”
Authors: Saylor Jennifer , Ruelens-Trinkaus Donna , Graber Jennifer S. , Clark Lindsey A. , Jackson Zachary , Creasy-Thomas Joanne , Heilferty Cathy
Published: September 2023

Background:

This article describes the development of a comprehensive pilot program, “It's ASNAP!” (Acclimating Nursing Students After the Pandemic). The program incorporated the academic, social, and emotional well-being of undergraduate nursing students returning to campus after the coronavirus disease 2019 (COVID-19) pandemic.

Method:

A purposeful sample of 488 students was recruited to participate via an anonymous survey on the academic, social, and emotional aspects of acclimating back to campus life.

Results:

A total of 121 undergraduate nursing students responded to the survey. The majority of students reported study groups (79%) and de-stressing events (86%) were the most helpful as they acclimated back to campus. Compared with the emotional and social areas of support, the academic area of support was of highest interest to the students.

Conclusion:

The “It's ASNAP!” program has been acculturated into the school of nursing to support students via study halls, tutoring, and social activities, as well as resilient threads and listening sessions during finals week.

[
J Nurs Educ
. 2023;62(9):516–518.]
Analysis of COVID-19 outbreak in Democratic Republic of the Congo using fractional operators
Authors: Ahmad Aqeel , Alfiniyah Cicik , Akgül Ali , Raezah Aeshah A.
Published: September 2023

The spread of COVID-19 in the Democratic Republic of the Congo is investigated in this work using fractional operators. To model the spread of the current COVID-19 variant among different age groups, we employ the epidemic scenario in the Democratic Republic of the Congo as a case study. In this study, the key characteristics of an epidemic problem such as COVID-19 are validated for existence and positivity, and unique solutions are demonstrated by applying certain findings from fixed-point theory. We also use the first derivative function to confirm the overall stability of the proposed system. The established methodology, which examines the impact of COVID-19 on various age groups, is highly sophisticated. Additionally, we use a method created by Atangana to solve the given model. This method stands as one of the most advanced approaches for addressing infectious problems; we also conduct an error analysis to identify and rectify any inaccuracies. Lastly, we assess the parameters to determine the effects of illness, and we provide numerical simulations implemented in MATLAB. These simulations illustrate the behavior of this infectious disease among various age groups in the Democratic Republic of the Congo.
ResNet and PCA-Based Deep Learning Scheme for Efficient Face Recognition
Authors: Dwivedi Rajendra Kumar , Kumar Devesh
Published: September 2023

Face recognition is an emerging field of research in recent days. With the rise of deep learning, face recognition has become efficient and precise, creating new milestones. The performance, accuracy, and computational time of the existing schemes can be enhanced by devising a new scheme. In this context, a multiclass classification framework for face recognition using residual network (ResNet) and principal component analysis (PCA) schemes of deep learning with Dlib library is proposed in this paper. The proposed framework produces face recognition accuracy of 99.6% and a reduction of computational time with 68.03% using principal component analysis.
Fempreneurship Through Digital Platforms
Authors: Mishra Abhyudaya Anand , Maheshwari Mridul , Pandey Jatin , Hassan Yusuf
Published: September 2023

The picture of entrepreneurs is changing with technology and women increasingly utilizing digital agility to navigate their careers. While several studies examine digital and female entrepreneurship, few investigate their integration, especially the democratizing potential of digital platforms. This study explores whether digital agility helps women overcome gender barriers in entrepreneurship through a cyberfeminist lens. Results show that although digital platforms may aid digital fempreneurship, barriers remain. The study identifies a double paradox of emancipation and conquest. This research pushes the boundaries of cyberfeminism and paradox theory, providing empirical evidence of platform power in entrepreneurship. It is among the first to identify barriers within the digital fempreneurship realm.
Effect of Severe Shot Peening on Mechanical Properties and Fatigue Resistance of Wire Arc Additive Manufactured AISI 316L
Authors: Hietala Mikko , Rautio Timo , Jaskari Matias , Järvenpää Antti
Published: September 2023

The wire arc additive manufacturing (WAAM) technology has become very popular recently. However, the properties of printed pieces are not yet examined properly. In this paper the effect of severe shot peening (SSP) on mechanical properties of wire arc additive manufactured AISI 316L is investigated. The effect of SSP on the surface hardness of the WAAM 316L is investigated by performing microhardness measurements. Changes to the surface microstructure caused by SSP are evaluated in the EBSD investigation. The effects of SSP on tensile and fatigue strength are investigated experimentally. The EBSD analysis showed that there has been remelting of each printed layer due to the heat input from the next printed layer, and heavy epitaxial grain growth was present in the microstructure. This led to coarse columnar grain structure. Investigation of deformed SSP surface layer indicated that the main deformation type was either conventional dislocation glide or twinning. This meant that no martensite formation was present on the surface. The SSP increased the surface hardness of WAAM printed 316L by 225% and the hardened layer was 0.4 mm thick. The SSP improved the yield strength of WAAM 316L by 34%. The SSP significantly improved WAAM 316L fatigue resistance in both low-cycle and high-cycle regime.
Optimization and Comparison of CO2 Capture Process Using DEPG and Methanol Solvents
Authors: Patthanaporn Anawat , Eiamsaubtab Hathaiphat , Nuchitprasittichai Aroonsri
Published: September 2023

This study focus is on the physical solvent-based CO2 capture process from an integrated Gasification Combined Cycle (IGCC) power plant, followed by a comparison of Dimethyl ether of polyethylene glycol (DEPG) solvent and methanol solvent, which is based on traditional technology and has a 95% CO2 purification requirement. After achieving the optimal condition, we would compare which solvents are suitable for this system. This procedure was simulated in Aspen HYSYS. Additionally, this study examined the effects of factors that provide the CO2 capture cost per ton ($/tCO2 captured). The response surface approach is used to get the optimal result. In the case of the optimal condition of DEPG solvent, the inlet temperature of fuel gas is – 2 °C, the stripper of inlet temperature is at 67 °C, the pressure of the absorber is at 2,994 kPa, and the stage of absorber appears to be 12 stages. As a result, the lowest DEPG solvent process cost is $189.63 per ton of CO2 collected. The minimum cost of CO2 capture under the optimal condition of methanol solvent, where the temperature of the absorbent and fuel gas is – 8 and – 20 °C, the stripper inlet temperature appears to be at – 6 °C, and the concentration of the absorbent is 88.85 wt.% in methanol solvent, is then $19.21 per ton of CO2 captured.