bluuebunny/crossref_metadata_2025_split huggingface dataset:
EXPRESS FEASIBILITY STUDY TOOL FOR PROJECTS TO EXTRACT TARGET LIQUID HYDROCARBONS FROM ASSOCIATED PETROLEUM GAS
Authors: Melnik E. R. , Gabbasov R. G. 
Published: May 2023

For a long time, associated petroleum gas was considered a by-product of oil production. Its properties were underestimated and most of the extracted raw materials were burned. However, the development of the gas and petrochemical industry has made it possible to take a fresh look at the possibilities of using associated petroleum gas: the extraction of valuable products from it using hydrocarbon processing technology. Currently, each oil producing company adheres to the approach to the rational use of associated gas, which is based on its use as a feedstock for obtaining valuable hydrocarbon products. In this regard, there is a growing need to carry out technical and economic feasibility for projects to extract target liquid hydrocarbons from associated petroleum gas.The article outlines the difficulties in applying the traditional approach to the implementation of technical and economic feasibility for projects to extract target liquid hydrocarbons from associated petroleum gas and natural gas in large fields with developed infrastructure. The need to develop a new, more efficient methodology for conducting technical and economic feasibility of such projects in terms of reducing the time and cost of work is indicated.The authors proposed a methodology for creating a software tool for conducting an express technical and economic feasibility on the extraction of target liquid hydrocarbons from associated petroleum gas and natural gas. This methodology will allow in a short time and at minimal cost to rank and select the most attractive projects for further full-fledged technical and economic feasibility and exclude work on conducting a technical and economic feasibility of obviously unprofitable projects.
Pragmatic functions of requests in commentaries made by the readership to an online news article
Authors: Magdaleno Nancy , Gutiérrez-Rivas Carolina 
Published: May 2023

The following study takes its data from commentaries made by the audience to acontroversial piece of news, posted by a virtual newspaper. The theoretical frame is based on Searle’s notions about the non-unidimensionality of speech acts. It is also complemented by Vendervenken ́s proposals about the existence of a gap between the speaker meaning and the sentence meaning. However, given the virtual context where the utterances are produced, a different dimensionality was observed regarding the directive speech acts. During the analysis, we took into account the (in)direct strategies used by the speakers when expressing ideas or opinions. These were classified according to Blum-Kulka, House and Kasper. It was presupposed that the non-existent cost-benefit relationship between the interlocutors in a virtual environment would be a decisive factor for being more or less direct when making requests, giving orders or making pleas. The results showed a high frequency of direct requests with an exhortative function plus an underlying function of rejection. Rejection was also found as a subfunction of the other types of pragmatic functions.
Action Research Topics and Questions in a Foreign Languages Teaching Practicum in Colombia
Authors: McNulty Maria 
Published: May 2023

Pre-service teachers identify topics and formulate research questions in action research under the guidance of advisors in the teaching practicum of an undergraduate foreign languages teaching program in Colombia. The objective is to examine pre-service teachers' and advisors' beliefs about useful methodological strategies to identify the topics and formulate the research questions, and the roles they assumed. The method in this case study was structured questionnaires and semi-structured interviews with the participants. This study shows that journal writing, collaborative dialogue, exploring and expanding one's theoretical base, delimiting topics, and de­monstrating work were useful strategies. Though pre-service teachers took ownership of choosing topics and formulating questions, some shared roles led advisors to participate more actively in this process. The methodologi­cal process used to identify the topics and formulate the research questions is associated with a reflective professional development endeavor with in­dividual and group reflection. Recibido: 01-09-09 /Aceptado: 28-01-10 How to reference this article: Mcnulty Ferri, M. (2010). Questions et sujets de recherche action d'enseignants en formation dans un programme de Licence en Langues Etrangères de Colombie. Íkala.15(1), pp.207-230.
Pronominal Address Forms of College Students in Medellin (Colom­bia) from the Sociopragmatic Point of View: Socioeconomic Status and Sex
Authors: Jang Ji Son 
Published: May 2023

Objectives: To present the results of research on pronominal address forms among undergraduate population in Medellín. This research took into account socioeconomic status and gender as research variables.Methodology: It is based on the analysis of the main data obtained through a questionnaire of 806 informants, and it was applied to the following four statistical techniques: 1) Sample Size for Estimating Multinomial Proportions (Thompson, 1987); 2) Contingency tables (Cochran, 1952); 3) Kruskal-Wallis Test (nonparametric test) (Kruskal & Wallis, 1952); and 4) Friedman's Test (nonparametric test) (1937, 1939, 1940).Results: Statistics shows that the research variables influence the pronominal selection.Conclusions: The following findings are worth mentioning: the lower the social class, the more usted is used compared to tú / vos. Addressing someone as tú, compared to addressing him / her as vos, is observed more frequently among the high class. Among men, the use of ''tuteo'' can imply a feminizing nuance; the use of ''voseo'' is ever-present; the use of usted is very common compared to, for example, the Peninsular Spanish variant.
Recieved: 26-04-2010 /Accepted: 20-10-2010
How to reference this article:
Jang, J. S. (2010). Fórmulas de tratamiento pronominales en los jóvenes universitarios de Medellín (Colombia) desde la óptica sociopragmática: estrato socioeconómico y sexo. Íkala. 15(3), 43 – 116.
Real-Time Streaming Analytics using Big Data Paradigm and Predictive Modelling based on Deep Learning
Authors: Dinakar J. Ruby , S. Vagdevi 
Published: May 2023

With the evolution of distributed streaming platforms analysing humongous time series data, which is streamed continuously from IoT devices become lot easier. In most of the IoT networks the data are in motion or in data centre/cloud. It is possible to process this data in real time similar to edge devices using the big data framework. In data intensive applications predictive analytics require more resources to perform complex computations. Apache Flink framework is capable of performing real time streaming of schema less data and scales very high in distributed environment with low latency, it is used to collect and store the data in the cloud. This work suggests a suitable environment to collect, transport, preprocess and aggregate the data stream to perform predictive analytics using deep learning models. Deep learning automatically extracts features and builds models after training, it has the potential to solve problems that can't be solved by conventional machine learning models. Therefore, the use of algorithms based on deep learning is recommended for forecasting temporal data. Also, we discuss a number of different deep learning forecasting models and analyse the performance of different deep learning forecasting models in order to determine which one is the effective model for single step, multi step and multi variant methods based on error functions with respect to streamed sensor data.
A Novel Polarization Estimation Method for Seismic Recordings
Authors: Li Linjia , Li Huailiang , Tuo Xianguo , Yang Zhen , Rong Wenzheng 
Published: May 2023

Abstract
The polarization attributes of seismic recordings are usually used to determine the seismic phase and to design a filter. However, different time window lengths lead to different time-domain polarization estimation results; the time window length is difficult to determine and has no uniform criterion. We propose a time-domain polarization estimation method employing an optimal time window based on the instantaneous frequency of the seismic signals. First, the time–frequency spectrum of the seismic signal is obtained using the continuous wavelet transform, and an optimal time window is constructed using the corresponding instantaneous dominant frequency. Then, a complex polarization analysis algorithm is used to estimate the polarization parameters. Compared with the conventional constant and center frequency time window, the polarization properties estimated using an optimal time window can achieve more accurate seismic phase identification. The picked arrival time error decreases from 82.4 to 32.0 s, about 60%. Furthermore, the corresponding polarization filter can effectively denoise noisy seismic recordings and increase the signal-to-noise ratio (SNR) increased by 0.49–2.65 times for original signals with different SNRs. The cross-correlation coefficient is increased by 0.26 on average, further preservation of signal information.
Observation of Higher-Mode Rayleigh Waves from Ambient Noise in the Tarim Basin, China
Authors: Xie Tongtong , Xu Tao , Yang Yingjie , Tian Xiaobo , Lin Jiyan , Wu Chenglong , Lu Zhanwu 
Published: May 2023

Abstract
Higher mode surface waves, which can provide additional constraints on subsurface structures in addition to fundamental modes in surface-wave tomography, have been observed from ambient noise cross-correlation functions (CCFs) in sedimentary basins in oceans or near coastlines. However, few studies show that higher mode surface waves can be observed and extracted directly from ambient noise CCFs in inland basins. In this study, we report observations of high signal-to-noise ratio fundamental and the first higher mode Rayleigh waves at a period range of 0.2–1.90 s and 0.2–1.35 s, respectively, from ambient noise CCFs in the southeastern margin of the Tarim basin, the biggest inland basin in China. We confirm the credibility of the first higher mode surface waves by showing that the observed first higher mode dispersion curves are matched with predicted ones calculated from S velocity models solely constrained by fundamental-mode dispersion curves. After the verification of the credibility of the first higher mode surface waves, we demonstrate that the inclusion of the first higher mode dispersion curves helps image deeper structures with an increase of average depths from ∼0.73 to ∼1.24 km, which will be beneficial to future explorations of deep oil and gas resources in the Tarim basin.
A Local Seismic Project near the Dalk Glacier Area, Larsemann Hills, East Antarctica: Toward Subice Imaging and Icequake Monitoring
Authors: Fu Lei , Guo Jingxue , Li Lin , Lu Kai , Chen Xiaofei 
Published: May 2023

Abstract
During the 2019–2020 field season of the 36th Chinese National Antarctic Research Expedition, two seismic arrays were deployed in the Dalk Glacier area of Larsemann Hills, East Antarctica. The arrays consisted of 100 short-period nodal stations and were intended to investigate the physical properties and seismic events in the region, with the goal of enhancing our understanding of the glacier’s structure and dynamics. With these data, we use horizontal-to-vertical spectral ratio (HVSR) analysis to estimate the ice thickness. Noise cross-correlation functions and multimode dispersion curves of Rayleigh waves were extracted from the vertical-component ambient noise data to illuminate near-surface glacial structures. Teleseismic events with Mw &gt;5.5 and two typical kinds of icequakes were observed via visual inspection. These initial results improve the understanding of the physical properties of the ice sheet as well as the glacial seismicity in Dalk Glacier.
Pyekfmm: A Python Package for 3D Fast-Marching-Based Travel-Time Calculation and its Applications in Seismology
Authors: Chen Yangkang , Chen Yunfeng , Fomel Sergey , Savvaidis Alexandros , Saad Omar M. , Oboué Yapo Abolé Serge Innocent 
Published: May 2023

Abstract
We present a multifunctional open-source package—pyekfmm for eikonal-based travel-time calculation in 2D and 3D heterogeneous anisotropic media based on the well-documented fast marching method. Different from existing travel-time calculation packages, the pyekfmm package offers a seamless compilation of the backbone C programs in the Python environment through a state-of-the-art pip installation. As a result, the users can use the pyekfmm package for different scientific purposes with the convenience enabled by Python interfaces and with the efficiency offered by C programs. The pyekfmm package offers the option of travel-time calculation to second-order accuracy. More importantly, the pyekfmm provides the option for travel-time calculation in anisotropic media, which enables its exclusive applications in special cases in which strong anisotropy exists. We introduce the mathematical principles and the structure of the package in detail. To demonstrate its potential, we apply it to a wide spectrum of applications, including travel-time calculation in different situations with increasing complexities, ray tracing, earthquake source location, relocation, and surface-wave tomography.
Bioeconomía de biopolímeros basados en residuos orgánicos domésticos para la disminución del impacto ambiental generado por residuos plásticos de un solo uso en el Edificio Pasaje Amador de la ciudad de Quito.
Authors: Hernández Andrea , Rojo Gutiérrez Marco Antonio 
Published: May 2023

Bioeconomía de biopolímeros basados en residuos orgánicos domésticos: Un modelo para la disminución del impacto ambiental generado por residuos plásticos de un solo uso en el Edificio Pasaje Amador de la ciudad de Quito, es un proyecto de investigación que busca aportar a una trasformación de un paradigma "lineal" a un paradigma "circular", convirtiéndose en un reto debido a los obstáculos para que los bioprocesos y bioproductos se desarrollen. El objetivo principal del estudio fue conocer la importancia y beneficio de diseñar e implementar un modelo de bioeconomía para el diseño de biopolímeros a partir de residuos orgánicos domésticos, la metodología es de naturaleza mixta, el estudio se realizó en el Edificio Pasaje Amador ubicado en la ciudad de Quito, Ecuador, el tamaño muestral para la investigación fue de quince microempresas, diez oficinas, diez departamentos. Se inició con una fase de recolección de datos, mediante un cuestionario, mismo que fue sometido a pruebas estadísticas de confiabilidad, continuando con una fase experimental donde se diseñó el biopolímero, a partir de residuos orgánicos, para el efecto se realizaron cuatro ensayos experimentales para que los resultados presenten confiabilidad, utilizando un análisis no probabilístico, dentro de la experimentación se tuvo en cuenta la manipulación intencional de variables (independientes), medición de variables (dependientes), control y validez, grupos de comparación. El diseño finalmente fue evaluado mediante un cuestionario de satisfacción del producto, aplicado a la muestra de estudio, para validar el impacto que tiene la inserción de biopolímeros en el Pasaje Amador comparado con los plásticos de un solo uso, afirmando así la hipótesis positiva de la investigación que es que el modelo de Bioeconomía de biopolímeros a partir de residuos orgánicos domésticos, permite disminuir el impacto ambiental generado por residuos plásticos de un solo uso en el Edificio Pasaje Amador de la ciudad de Quito.
COMÉRCIO DE PEIXES ORNAMENTAIS NA ILHA DE SÃO LUÍS, MARANHÃO, BRASIL
Authors: Pinheiro Santos Jadson , Quim Benilson da Silva , Machado Ferreira Matheus Willy , Nina Santos Ferreira Achilles , Sousa Rabelo Larissa , Machado Oliveira Andressa Priscila , Maciel Aick Carlos Daniel , De Souza Ferraz Kelly , Silva de Brito Pâmella , Guimarães Erick Cristofore 
Published: May 2023

O objetivo do presente estudo foi caracterizar o comércio de peixes ornamentais na ilha de São Luís, Maranhão. O trabalho foi desenvolvido no período de setembro de 2018 a agosto de 2019, nos seguintes municípios: Paço do Lumiar, Raposa, São José de Ribamar e São Luís. Os dados coletados foram de natureza primária, obtidos por meio de questionários estruturados e semiestruturados, com perguntas que possibilitaram a produção de uma melhor amostra da população de interesse. Foi possível entrevistar cinco piscicultores de um total de seis relatados para a região (83%), assim como nove lojistas de um total de 21 (43%) e 38 aquaristas de um total de 107, com 65% dos entrevistados localizados no município de São Luís. Os peixes comercializados concentraram-se principalmente nas ordens dos Cichliformes (38,4%) e Characiformes (21,2%), e são provenientes de piscicultores localizados na ilha de São Luís (11%) e de outros estados (89%), principalmente São Paulo, Rio de Janeiro, Ceará, Recife, Minas Gerais, Mato Grosso e Amazonas. O mercado de peixes ornamentais na ilha de São Luís mostrou-se promissor com possibilidades de incrementos na produção e oferta de produtos no mercado local.
A new method for identification of drowning-related out-of-hospital cardiac arrest (Danish Drowning Formula): A retrospective cohort study with 30-day follow-up
Authors: Breindahl Niklas , Wolthers Signe Amalie , Jensen Theo Walther , Holgersen Mathias Geldermann , Blomberg Stig Nikolaj Fasmer , Steinmetz Jacob , Christensen Helle Collatz 
Published: May 2023

Abstract
Background
Accurate, reliable, and sufficient data is required to reduce the burden of drowning by targeting preventive measures and improving treatment. Today’s drowning statistics are informed by various methods sometimes based on data sources with questionable reliability. These methods are likely responsible for a systematic and significant underreporting of drowning. This study’s aim was to assess the 30-day survival of patients with out-of-hospital cardiac arrest (OHCA) identified in the Danish Cardiac Arrest Registry (DCAR) after applying the Danish Drowning Formula.
Methods
This nationwide, cohort, registry-based study with 30-day follow-up used the Danish Drowning Formula to identify drowning-related OHCA with a resuscitation attempt from the DCAR from January 1st, 2016, through December 31st, 2021. The Danish Drowning Formula is a text-search algorithm constructed for this study based on trigger-words identified from the prehospital medical records of validated drowning cases. The primary outcome was 30-day survival from OHCA. Data were analyzed using multiple logistic regression.
Results
In total, 30,215 OHCA were registered in the DCAR. The Danish Drowning Formula identified 707 potential drowning related OHCA. Of these, 374 were non-drowning, and 16 were excluded because of irreversible death resulting in 317 (1%) patients with drowning related OHCA compared to 29,882 patients with OHCA from other causes. The 30-day survival for patients with drowning-related OHCA was higher compared to OHCA from other causes (33% vs 14%, p < 0.001). Adjusted OR for 30-day survival for drowning-related OHCA and other causes of OHCA was 2.3 [1.7–3.2], p < 0.001.
Conclusions
This study found higher 30-day survival among drowning-related OHCA compared to OHCA from other causes. This study proposed that a text-search algorithm (Danish Drowning Formula) could explore unstructured text fields to identify drowning persons. This method may present a low-resource solution to inform the drowning statistics in the future.
Registration:
This study was registered at ClinicalTrials.gov before analyses (NCT05323097).
A Comparative Study of Various Path Planning Algorithms for Pick-and-Place Robots
Authors: AL-ZUBAIDI ZAID M , AY Serdar , AL-KHAFAJI Mohanned 
Published: May 2023

Abstract
Path planning algorithms are essential tools in various fields of robotics, such as autonomous vehicles, unmanned ground vehicles, and mobile robots. The A* algorithm is a well-known path-planning algorithm that finds the shortest path between two points in a given environment. Rapidly-exploring Random Trees (RRT) and Probabilistic Roadmaps (PRM) are also popular algorithms that efficiently find feasible paths in high-dimensional and complex environments. In this study, the aforementioned path-planning algorithms are utilized, examined, and compared in terms of computational time for pick-and-place robots used in specific areas of the production lines. This study also analyzes and contrasts the advantages and disadvantages of each algorithm by simulating the machine alignment of the most common production lines and concentrating on the effective parameters that may be modified in each algorithm to fulfill the requirements. This study showed that each algorithm could be adjusted. Still, The A* algorithm gives the shortest path with a short computational time, contrary to RRT, but RRT results can be enhanced to find a shorter path as the computational time increases; otherwise, it gives a path with a very short computational time, and PRM gives an unpredictable new path for each iteration and its length inversely proportional to the computational time.
Morphological anomalies in the fourth instar larvae of Aedes aegypti and a case of gynandromorphism in Culex quinquefasciatus in Yucatán, México
Authors: Tzuc-Dzul Julio Cesar , Orozco-Chulim Rodrigo , Garcia-Rejon Julian Everardo , Chi-Chim Wilbert A , Cigarroa-Toledo Nohemi , Hernandez-Mena David , Hernandez-Cuevas Nora Adriana , Baak-Baak Carlos Marcial 
Published: May 2023

Abstract
Two cases of mosquitoes with morphological anomalies were documented. Both cases occurred in mosquitoes collected in the field. Twenty-five larvae of the fourth instar of Aedes aegypti with severe anomalies were observed. The distal part of the siphon displays a chitinized bulb. The siphon displays two pecten; one in the middle and one at the base of the chitinized bulb. The seta 1-S triple developed twice in the siphon; in the middle and distally at the base of the chitinized bulb. Larvae display two combs in two separate curve rows; one in the eighth abdominal segment and one in the base of the siphon. The anal segment had double development; the first did not present a saddle and the ventral brushes. The other was less developed; it displays a saddle, dorsal brushes, and ventral brushes. A Culex quinquefasciatus adult displayed a gynandromorph of the polar type, with the head of a female (filiform antennae, palps shorter than the proboscis), and an abdomen with male genitalia. Mosquito phenotypic anomalies occur in nature and have a negative impact on reproductive success and vector competence.