bluuebunny/crossref_metadata_2025_split huggingface dataset:
Performance analysis of a multi-tube exhaust waste heat recovery methanol reforming to hydrogen reactor
Authors: Li Weixing , Tang Yuanyou , Long Wuqiang , Xiao Ge 
Published: April 2024

To address hydrogen storage and transport challenges, a methanol reforming hydrogen reactor featuring multi-pipe exhaust heat recovery was simulated using Fluent. Initial simulations focused on microscopic flow, heat transfer, and reaction dynamics within a catalyst particle stack. Subsequent macroscopic analyses of a comprehensive reactor model evaluated how reactant inlet velocity, molar ratio of steam to methanol vapor (S/M), exhaust temperature, and flow impact reforming performance. Findings indicate that smaller catalyst particles enhance heat transfer and reaction at the cost of increased pressure drop, with an optimal size of 4.4 mm. Methanol conversion correlates positively with S/M, exhaust temperature, and flow, but negatively with inlet velocity. Hydrogen production increases then decreases with S/M, showing positive correlation with inlet velocity, exhaust temperature, and flow. Carbon monoxide selectivity is inversely related to inlet velocity and S/M, and positively to exhaust temperature and flow.
Applicability of Mooney-Rivlin model for studying hyperelastic behavior of tongue
Authors: He Chaobo , Chen Liujie , Xiao Tan 
Published: April 2024

The hypertrophy and relaxation of tongues easily leads to patients’ airway obstruction during sleep, which will cause obstructive sleep apnea hypopnea syndrome (OSAHS). Therefore, studying biomechanical properties of tongues with constitutive relation to obtain related parameters is important. In this paper, applicability study is performed to specify the tongues’ mechanical properties (TMP) based on the Mooney-Rivlin hyperelastic model. Firstly, the research on uniaxial stretching vitro experiments of pig tongues was carried out; then, the material parameters of the proposed model were determined with reference to the experiments results; finally, the advantages and disadvantages of the model to detail the TMP were discussed respectively. The results showed that the Mooney-Rivlin hyperelastic model has a simple structure, which reflects the TMP well while appearance of large deformation but fails to reflect the TMP while the strain is small in linear segment, but that of the toe segment is in contrast to the linear segment.
An Underwater Acoustic Target Recognition Method Based on Transfer Learning
Authors: Yang Xiaozhuo , Yu Huapeng , Sheng Hanmin , Zeng Wenlong , He Qingyuan , Tu Junyang 
Published: April 2024

Underwater acoustic target recognition(UATR)is a challenging task Due to the high cost of sampling data, it is difficult to build a large-scale dataset.In this study,a new method based on transfer learning with a VGG16 model(Transfer-VGG16) is developed in which three-dimensional(3-D)data is used as the input.Use the dataset obtained in real scenarios to validate the proposed method.Experiments have shown that Transfer-VGG16 model works well when the observation data is scarce.
Data lake management using topic modeling techniques
Authors: Cherradi Mohamed , El Haddadi Anass 
Published: April 2024

With the rapid rise of information technology, the amount of unstructured data from the data lake is rapidly growing and has become a great challenge in analyzing, organizing and automatically classifying in order to derive the meaningful information for a data-driven business. The scientific document has unlabeled text, so it's difficult to properly link it to a topic model. However, crafting a topic perception for a heterogeneous dataset within the domain of big data lakes presents a complex issue. The manual classification of text documents requires significant financial and human resources. Yet, employing topic modeling techniques could streamline this process, enhancing our understanding of word meanings and potentially reducing the resource burden. This paper presents a comparative study on metadata-based classification of scientific documents dataset, applying the two well-known machine learning-based topic modelling approaches, Latent Dirichlet Analysis (LDA) and Latent Semantic Allocation (LSA). To assess the effectiveness of our proposals, we conducted a thorough examination primarily centred on crucial assessment metrics, including coherence scores, perplexity, and log-likelihood. This evaluation was carried out on a scientific publications corpus, according to information from the title, abstract, keywords, authors, affiliation, and other metadata aspects. Results of these experiments highlight the superior performance of LDA over LSA, evidenced by a remarkable coherence value of (0,884) in contrast to LSA's (0,768)
Document processing system with digital signatures and administrative management in public universities. A review of the literature
Authors: Chang Saldaña Jackie Frank , Cachay Reyes Lincoln Fritz , Pastor Segura Julio Cesar , Salirrosas Navarro Liz Sobeida , Castagne Vasquez Janet Yvone 
Published: April 2024

Introduction: the concern about the limited progress in public institutions in Peru in the field of digitization of processes, despite the existence of legislation in force with coordinated actions from the State, to advance the digital development of the country. Objective: analyze the current situation of the system of document processing through digital signatures and administrative management in public universities. Methods: bibliographic research developed through a systematic review of repositories of Peruvian universities dated since 2019 and with the support of Google Scholar. Results: the findings showed that the existing advances continue to be scarce despite having demonstrated the benefits they bring to these entities in the use of human resources, materials, and time costs, as well as in the streamlining of their administrative processes, in line with the global trend of zero paper.Conclusions: un effort should be made to convey the benefits achieved with the application of this system, to overcome the doubts expressed by the respondents and to achieve an adequate implementation of the system
ANALISA AIRFOIL DENGAN METODE CFD MENGGUNAKAN ANSYS STUDENT 2024
Authors: Widyanto Dwi 
Published: April 2024

Penelitian ini fokus pada analisis airfoil dengan metode Computational Fluid Dynamics (CFD) menggunakan Ansys Student 2024. Model penelitian ini meniru model aliran dalam terowongan angin untuk menentukan parameter-parameter dari sebuah airfoil pada beberapa macam sudut serang, dan menggunakan situs Airfoiltools.com untuk memperoleh data geometri airfoil yang diperlukan. CFD mampu menangani efek seperti kompresibilitas, viskositas, turbulensi, dan pertukaran panas tapi dalam penelitian ini dibatasi pada aliran yang non kompresibel tapi mengandung viskositas.
Proses pembuatan batas interior/airfoil melibatkan pemindahan data dari airfoiltools.com kedalam Spaceclaim, sebuah modul dari Ansys Student 2024. Distribusi mata jaring (mesh) ditentukan menggunakan strategi ukuran berjenjang, yaitu ukuran dasar semua domain, diperkecil lagi dengan menggunakan sphere of influence rangkap dua, dan diperhalus lagi dengan Inflasi mesh pada permukaan airfoil.
Penelitian ini membahas hasil analisa CFD menggunakan Ansys Student 2024 dan perbandingannya dengan data lain serta interpretasinya terhadap aliran dalam dunia nyata.
Znaczenie cyfryzacji i innowacji w ramach rewolucji przemysłowej w kontekście współczesnych wyzwań
Authors: Ryvak Nataliya 
Published: April 2024

Analiza głównych trendów cyfrowych w ramach Przemysłu 4.0 i jego następców – Przemysłu 5.0. i Przemysłu 6.0 została przeprowadzona w tym artykule. Przeanalizowano koncepcję cyfryzacji jako warunku rozwoju innowacyjnych technologii. Udowodniono, że cyfryzacja i automatyzacja mogą pomóc w zwiększeniu wydajności pracy i zapewnieniu oszczędności zasobów, usprawnić interakcje z klientami, wykrywać zmiany potrzeb klientów w odpowiednim czasie i skutecznie reagować na aktualne wyzwania związane z pandemią i geopolitycznością.
Wyniki badania pokazują wyraźne oznaki potrzeby dalszego rozwoju cyfrowego i innowacji w celu wspierania transformacji przemysłowej i przyszłej rewolucji przemysłowej. Zalecono globalnym producentom przemysłowym, aby aktywnie pracowali nad rozwojem strategii cyfryzacji i wykorzystywali analitykę, analizę procesów i zrobotyzowaną automatyzację procesów jako kluczowe technologie, na których można budować dalsze innowacje.
Strategia polityki pieniężnej NBP od 1998 roku do wybuchu pandemii Covid-19
Authors: Kacprzak Marek 
Published: April 2024

W okresie pandemii COVID -19 oraz po inwazji Rosji na Ukrainę w światowej literaturze ekonomicznej rozpoczęła się burzliwa dyskusja o strategii polityki pieniężnej jaką powinny prowadzić banki centralne na świecie. Kanony polityki pieniężnej banku centralnego kształtowane są od powstania w XVII wieku pierwszych banków centralnych, czyli w Szwecji i Anglii. Zdaniem Autora artykułu, polityka pieniężna nie bierze się „znikąd” ale ma swoje historyczne korzenie. Dlatego też w tym artykule poddaję analizie strategię polityki pieniężnej NBP przed wybuchem pandemii COVID-19, która stanowi fundament dla obecnych działań NBP i Rady Polityki Pieniężnej w zakresie stabilizacji cen i walki z inflacją na obecnym etapie rozwoju polskiej gospodarki
GAGA:
Authors: Cristina Ribeiro de Sousa Demmy 
Published: April 2024

Nesse texto parto do interesse em promover uma reflexão sobre a linguagem de movimento gaga,desenvolvida através do coreógrafo israelense Ohad Naharin, no início dos anos 90. Artista de intervenções, choques e acontecimentos propõe na sua linguagem e obras o contato com outros mundos, onde as regras são diferentes. Dessa forma, utilizo a perspectiva da observação, experiência em workshops, participação em aulas regulares, análise de materiais bibliográficos, metodológicos, vídeos, entrevistas e espetáculos, com a pretensão de identificar o comum que atinge a sua prática.
La Ética Profesional en las Motivaciones Humanas y los Procesos Organizacionales
Authors: Lozano Fariño Carlos Antonio , Martinez Cárdenas Lurdais Maria , Escudero Garrido Yelena Patricia , Fajardo Pereira Johana Elisa , Villalba Sanchez Cristian 
Published: April 2024

El ejercicio de la ética y la motivación como elementos estratégicos en las organizaciones, requiere que sus entornos reconozcan el talento que las dinamiza. En el presente artículo se plantea conceptualmente tópicos productos de una investigación sobre el ejercicio de la ética profesional, como también se suman conceptos de referentes importantes sobre liderazgo motivacional en las empresas modernas y la dinámica de sus procesos con miras a sumar a la tan anhelada productividad. El objetivo fundamental es identificar la motivación de las personas en una organización de acuerdo con su práctica profesional ética que contribuye a la productividad empresarial y desarrollo integral, tanto de la empresa como en todos sus colaboradores. En las fuentes utilizadas se destaca el valor otorgado a las personas como lideres innatos de sus propios procesos personales, sociales y empresariales. La problemática se aborda desde un estudio descriptivo documental en el cual las personas vinculadas a las organizaciones y que cuentan con un poder significativo dentro de esas empresas, se convierten en líderes y motiven a sus colaboradores lo suficiente para lograr los objetivos del negocio y su propio desarrollo personal.
Are They Everywhere? – Benthic Foraminifera From Saline Springs in Central Germany
Authors: Milker Yvonne , Schönfeld Joachim , Meng Stefan , Wrozyna Claudia , Schneppmüller Martin , Schmiedl Gerhard 
Published: April 2024

Abstract
Benthic foraminifera have rarely been reported from saline springs in Germany. To fill this gap, we investigated live (Rose Bengal stained) and dead benthic foraminifera from saline ponds, springs, and meadows in central Germany. For foraminiferal investigations, we collected surface samples along transects with changes in vegetation at Sülldorf in Saxony-Anhalt, in Artern and close to Auleben, Luisenhall, and Esperstedt in Thuringia. We found live and dead foraminifera at all investigated saline locations. We observed seven different agglutinated species that commonly inhabit coastal salt marshes (Trochamminita irregularis, Trochamminita salsa, Entzia macrescens, Miliammina fusca, Siphotrochammina lobata, Haplophragmoides manilaensis, and Haplophragmoides wilberti), one agglutinated species, Entzia sp., which has not been described to date, and one calcareous species, Gordiospira arctica, which has earlier been described from shallow-water settings at high northern latitudes. We hypothesize that foraminifera have been repeatedly transported to the inland saline habitats in central Germany by migratory birds on their routes from northern and southern Europe probably since the early Holocene. Future genetic investigations of the species in central Germany and comparisons with sequenced specimens from other localities will provide a better understanding of their provenance and phylogenetic position.
Foraminiferal Evolution as A Basis for the Subdivision of the Middle Viséan in Europe
Authors: Cózar Pedro , Somerville Ian D. , Hounslow Mark W. 
Published: April 2024

Abstract
First occurrences of selected foraminifers and their interpreted phylogenies in the uppermost Arundian Substage of the South Cumbria Shelf, northern England, allows the distinction of four biostratigraphic events. Event A1 is characterised by the occurrence of occluded Nodosarchaediscus, Consobrinellopsis, and Archaediscus krestovnikovi and is assigned to the ‘upper’ Cf4δ subzone. Event A2 is characterised by the first occurrence of Pojarkovella ketmenica and Archaediscus at concavus stage (including the first A. pauxillus) and is assigned to the base of the Cf5α subzone. Event A3 is characterised by Koskinotextularia aff. cribriformis, Koskinotextularia sp., Archaediscus moelleri, Endothyranopsis compressa, and Omphalotis minima and is assigned to the base of the Cf5β subzone. Event A4 is characterised by the first occurrence of Koskinotextularia cribriformis, Koskinotextularia bradyi, Koskinotextularia obliqua, and Pojarkovella nibelis morphotype 2. The base of the Cf5α subzone likely coincides with the base of the Livian in Belgium and Tulian in the Russian Platform, although the occurrence of hiatuses and facies barren in foraminifers leads to uncertainty in correlation. The Cf5β subzone is correlated with that part of the Livian and Russian Platform succession with preserved foraminifers and thus can be used for worldwide correlations. However, formally, it cannot be confirmed if this horizon is an isochronous level (due to hiatuses and hostile facies), and it is necessary to locate a slightly higher level of potential correlation that better displays the absence or presence of the successions, such as event A4.
A Replacement Neotype for Globigerina Crassaformis Galloway & Wissler, 1927
Authors: Scott George H. 
Published: April 2024

Abstract
A replacement neotype for Globigerina crassaformis Galloway & Wissler, 1927, is proposed for one that was published but lost in curation prior to being deposited. The specimen is selected from an analysis of the axial shape of 54 specimens from the type and adjacent localities. Its cone-like attributes include progressively elevated and tapering umbilical walls, an acute, keeled periphery, and a low-relief spiral surface. Globorotalia crassacarina Scott, Bishop & Burt, 1990, and possibly Globorotalia hessi Bolli & Premoli Silva, 1973, include specimens that closely resemble the proposed neotype and may be junior synonyms.
Depth reduction of RGB image data and reduction of point noise based on metric learning method
Authors: Alsaeedi Riyadh 
Published: April 2024

In this paper, a method of data depth reduction based on metric learning method in reducing point noise in different images is proposed. In order to be more accurate in reviving depth from data, noise variance is also calculated for each separate scale. In this way, our method becomes more sensitive to noise detection. The quantitative and qualitative results obtained from the implementation and calculation of the PSNR parameter of this method show that the proposed method of this paper has given a good answer compared to previous methods for noise elimination and has performed better in maintaining sharp corners and sharp features.
A Randomized Trial of Honey Versus Povidone Iodine Dressings: Pain Profile of Wagner Grade 2 Diabetic Foot Ulcers
Authors: Iwunze Charles I. , Iwunze Ezinne C. 
Published: April 2024

Diabetic foot ulcers (DFU), a chronic disorder of public health importance arise from pathologic changes following abnormal glucose metabolism. Wound dressing is vital to DFU management and is designed to promote healing and relieve pain among other roles. Pain associated with chronic wounds can delay healing, reduce quality of life, and affect mental health.
This study evaluates the effect of honey and povidone iodine-based dressings on the severity of pain associated with Wagner grade 2 DFU.
Study Design: This was a randomized controlled trial on the pain-modulating effects of honey and povidone iodine dressings on Wagner grade 2 DFU using the visual analogue scale (VAS) at the University of Port Harcourt Teaching Hospital (UPTH), Port Harcourt over a year duration.
Methodology: We included 30 patients (17 males; age range 47-65 years) with Wagner grade 2 diabetic foot ulcers. Data on socio-demographics, BMI, HbA1c, ulcer etiology and site distribution, VAS for pain intensity, wound exudate characteristics and extent of healing were obtained and analyzed using Statistical Package for the Social Sciences (SPSS) 20.0. A p-value <0.05 was considered significant.
Results: The median VAS pain score was 2.0 and 3.0 for the honey and povidone iodine dressing groups respectively (p-value=0.724) in week 1, then 1.0 and 2.0 for the honey and povidone iodine dressing groups respectively and (p-value=0.041) in week 3. By week 5, all ulcers in the honey group were healed, and the lone persistent ulcer in the povidone group had a 1.0 VAS score by week 6.
Conclusion: Honey dressings are associated with less wound pain over the course of treatment compared to povidone iodine dressing in the treatment of Wagner 2 DFU.
CO\(_2\) and Climate Change: Unveiling the Missing Experimental Evidence
Authors: Pustišek Andrej 
Published: April 2024

Human activities releasing greenhouse gases are identified as dominant contributors to the observed climate change including global warming and its acceleration. The consequences for humanity are predicted to be severe. Therefore, to mitigate global warming, significant efforts are being devoted to reducing CO2 emissions and stabilizing (or even reducing) atmospheric CO2 concentration. This enormous endeavor of ‘decarbonization’ comes with substantial costs, running into trillions of USD in Western countries alone.
Fundamentally, the entirety of endeavors, actions, and outcomes hinges upon the central hypothesis stating that the increase of CO2 concentration from approximately 0.03% to more than 0.04% causes a noticeable temperature rise. Given the paramount significance of this hypothesis, the generally accepted rules of science would necessitate rigorous scrutiny for substantiation. Such substantiation is typically provided by an experimental evidence.
Yet, surprisingly according to the results of this research, exactly this essential experimental evidence supporting the central hypothesis seems to be lacking, not fully adhering to fundamental principles of scientific analysis. Consequently, robust experimental evidence must be presented to substantiate the hypothesis, as the failure to do so would necessitate a reassessment of the emphasis on CO2 emissions reduction as the primary solution to climate change.
Rich Phase Behavior in a Supramolecular Conducting Material Derived from an Organogelator
Authors: Puigmartí‐Luis Josep , Laukhina Elena E. , Laukhin Vladimir N. , Pérez del Pino Ángel , Mestres Narcis , Vidal‐Gancedo José , Rovira Concepció , Amabilino David B. 
Published: February 2009

AbstractOrganic conducting fiber‐like materials hold great promise for the development of nanowires that can act as connections in miniature electronic devices, as an alternative to inorganic nanometer scale structures. This article presents a conducting organic tetrathiafulvalene‐based supramolecular material which possesses a rich phase behavior with different packing of the molecules in the different forms, evidenced by electron spin resonance (ESR) spectroscopy. The distinct phases of conducting nanofibers can be easily fabricated through the temperature control of their preparation process from a xerogel by doping with iodine vapors. A total of four conducting phases have been identified conclusively using ESR spectroscopy as the key analytical tool. Three of the phases show a good long‐term stability and areas in which the
I–V curves have ohmic behavior when studied by current sensing (conducting) AFM. They offer promise for applications where electrical nanometer scale connections are required.
Controlled Deposition of Crystalline Organic Semiconductors for Field‐Effect‐Transistor Applications
Authors: Liu Shuhong , Wang Wechung Maria , Briseno Alejandro L. , Mannsfeld Stefan C. B. , Bao Zhenan 
Published: February 2009

AbstractThe search for low‐cost, large‐area, flexible devices has led to a remarkable increase in the research and development of organic semiconductors, which serve as one of the most important components for organic field‐effect transistors (OFETs). In the current review, we highlight deposition techniques that offer precise control over the location or in‐plane orientation of organic semiconductors. We focus on various vapor‐ and solution‐processing techniques for patterning organic single crystals in desired locations. Furthermore, the alignment of organic semiconductors via different methods relying on mechanical forces, alignment layers, epitaxial growth, and external magnetic and electric fields are surveyed. The advantages, limitations, and applications of these techniques in OFETs are also discussed.