bluuebunny/crossref_metadata_2025_split huggingface dataset:
Satu Tubuh, Dua Formasi Identitas: Anggota Laskar Partai dalam Kelindan Relative Surplus Population dan Lumpenproletariat
Authors: Haekal Luthfian 
Published: January 2024

Artikel ini menelisik hubungan antara anggota laskar partai politik sebagai kelompok vigilante, pasar tenaga kerja, dan watak kekerasan di Yogyakarta. Dengan menggunakan teori Karl Marx tentang Relative Surplus Population (RSP) dan lumpenproletariat, artikel ini menempatkan anggota vigilante sebagai angkatan kerja yang terjalin dengan rezim buruh tertentu yang mendisiplinkan pasar tenaga kerja. Penelitian ini menemukan bahwa angkatan kerja yang tidak terserap di pasar tenaga kerja formal akhirnya bergabung dengan kelompok vigilante. Mereka adalah angkatan kerja yang tidak memiliki kualifikasi tinggi dalam hal pendidikan dan keahlian. Oleh karena itu, kelompok vigilante memberi mereka pekerjaan di sektor informal. Maka dari itu, mereka membalas budi dengan menjadi alat kampanye para patron vigilante. Kesimpulannya, artikel ini memposisikan mereka sebagai RSP yang stagnan dan RSP pauperism. Karena sifat kekerasan kelompok vigilante, mereka termasuk dalam lumpenproletariat.
Stimulation of the calcium‐sensing receptor induces relaxations of rat mesenteric arteries by endothelium‐dependent and ‐independent pathways via BKCa and KATP channels
Authors: Carlton‐Carew Simonette R. E. , Greenberg Harry Z. E. , Connor Eleanor J. , Zadeh Pooneh , Greenwood Iain A. , Albert Anthony P. 
Published: January 2024

AbstractStimulation of the calcium‐sensing receptor (CaSR) induces both vasoconstrictions and vasorelaxations but underlying cellular processes remain unclear. This study investigates expression and effect of stimulating the CaSR by increasing external Ca2+ concentration ([Ca2+]o) on contractility of rat mesenteric arteries. Immunofluorescence studies showed expression of the CaSR in perivascular nerves, vascular smooth muscle cells (VSMCs), and vascular endothelium cells. Using wire myography, increasing [Ca2+]o from 1 to 10 mM induced vasorelaxations which were inhibited by the calcilytic Calhex‐231 and partially dependent on a functional endothelium. [Ca2+]o‐induced vasorelaxations were reduced by endothelial NO synthase (eNOS, L‐NAME) and large conductance Ca2+‐activated K+ channels (BKCa, iberiotoxin), with their inhibitory action requiring a functional endothelium. [Ca2+]o‐induced vasorelaxations were also markedly inhibited by an ATP‐dependent K+ channel (KATP) blocker (PNU37883), which did not require a functional endothelium to produce its inhibitory action. Inhibitor studies also suggested contributory roles for inward rectifying K+ channels (Kir), Kv7 channels, and small conductance Ca2+‐activated K+ channels (SKCa) on [Ca2+]o‐induced vasorelaxations. These findings indicate that stimulation of the CaSR mediates vasorelaxations involving multiple pathways, including an endothelium‐dependent pathway involving NO production and activation of BKCa channels and an endothelium‐independent pathway involving stimulation of KATP channels.
Game-based learning to improve diagnostic accuracy: a pilot randomized-controlled trial
Authors: Morgan Daniel J. , Scherer Laura , Pineles Lisa , Baghdadi Jon , Magder Larry , Thom Kerri , Koch Christina , Wilkins Nick , LeGrand Mike , Stevens Deborah , Walker Renee , Shirrell Beth , Harris Anthony D. , Korenstein Deborah 
Published: January 2024

Abstract

Objectives
Perform a pilot study of online game-based learning (GBL) using natural frequencies and feedback to teach diagnostic reasoning.

Methods
We conducted a multicenter randomized-controlled trial of computer-based training. We enrolled medical students, residents, practicing physicians and nurse practitioners. The intervention was a 45 min online GBL training vs. control education with a primary outcome of score on a scale of diagnostic accuracy (composed of 10 realistic case vignettes, requesting estimates of probability of disease after a test result, 0–100 points total).

Results
Of 90 participants there were 30 students, 30 residents and 30 practicing clinicians. Of these 62 % (56/90) were female and 52 % (47/90) were white. Sixty were randomized to GBL intervention and 30 to control. The primary outcome of diagnostic accuracy immediately after training was better in GBL (mean accuracy score 59.4) vs. control (37.6), p=0.0005. The GBL group was then split evenly (30, 30) into no further intervention or weekly emails with case studies. Both GBL groups performed better than control at one-month and some continued effect at three-month follow up. Scores at one-month GBL (59.2) GBL plus emails (54.2) vs. control (33.9), p=0.024; three-months GBL (56.2), GBL plus emails (42.9) vs. control (35.1), p=0.076. Most participants would recommend GBL to colleagues (73 %), believed it was enjoyable (92 %) and believed it improves test interpretation (95 %).

Conclusions
In this pilot study, a single session with GBL nearly doubled score on a scale of diagnostic accuracy in medical trainees and practicing clinicians. The impact of GBL persisted after three months.
Study on recognition and classification of English accents using deep learning algorithms
Authors: Ke Wenjuan 
Published: January 2024

Abstract
The recognition and classification of English accents have high practical value in areas such as security management and information retrieval. This study introduced two English accent features, filter bank (FBank) and Mel-frequency cepstral coefficient (MFCC), based on deep learning techniques. It then combined convolutional neural network (CNN), gated recurrent unit, and an attention mechanism to design a 1D CNN-BiGRU-Attention model for English accent recognition and classification. Experimental tests were conducted on the VoxForge dataset. The results showed that compared to MFCC, FBank performed better in English accent recognition and classification, and 70FBank achieved the highest F1 value. Among the recurrent neural network, long short-term memory, and other models, the BiGRU model had the best performance. The average F1 value of the 1D CNN-BiGRU-attention model was the highest, reaching 85.52%, and all the F1 values were above 80% for different accents, indicating that the addition of the attention mechanism effectively improved the model’s recognition and classification effectiveness. The results prove the reliability of the method proposed in this article for English accent recognition and classification, making it suitable for practical application and promotion.
A novel bearing fault detection approach using a convolutional neural network
Authors: Aydın Tolga , Erdem Ebru , Erkayman Burak , Engin Kocadağistan Mustafa , Teker Tanju 
Published: January 2024

AbstractBearing fault detection is an important part of mechanical equipment and rotating machinery. Bearing failure should be detected early because it can lead to property and safety losses. This study proposes convolutional neural network (CNN) based models for bearing fault detection. Since the main advantages of the proposed methods apply to different types of warehouse data, failure can be detected in a short time and applied directly to raw data. These new models achieve comparable or better performance compared to the existing models in the literature. Although the structure of the proposed models is simpler and the number of parameters used is smaller, these new models achieve successful empirical results. Data sets from CWRU and IMS were used to test the models. This study compares the proposed models with the existing models in the literature. It also compares the new models with the machine learning algorithms and obtains better empirical results.
Microstructure and properties of Mn–Si–Cr alloy steel modified by quenching and partitioning
Authors: Gu Jian , Li Dongqing , Liu Shengchun , Liu Zhen 
Published: January 2024

Abstract
This study investigates the influence of modification on the microstructure and properties of Mn–Si–Cr alloy steel. The results indicate that the as-cast microstructure of Mn–Si–Cr alloy steel is composed of black acicular bainitic ferrite lath and white retained austenite. The microstructure of the alloy steel changes to martensite, austenite, and carbide after quenching and partitioning treatment. After rare-earth magnesium modification and compound modification, the as-cast microstructure of Mn–Si–Cr steel becomes more refined and displays a more regular arrangement. Furthermore, the martensite and austenite grains in the modified samples show refinement, and the arrangement of martensite is more systematic. Additionally, the amount of austenite decreases, and the amount of carbides increases after quenching and partitioning heat treatment. In comparison with the unmodified samples, the modified samples show negligible changes in hardness. However, the impact toughness of modified quenched and partitioned steel increases by 20 %. Moreover, the wear resistance of compound modified quenched and partitioned steel is 38 % higher than that of the unmodified sample. The compound modified sample steel exhibits excellent wear resistance and comprehensive mechanical properties.
Gemeinschaft versus Gesellschaft: Cooperatives and the problem of free-riding in the provision of collective goods
Authors: Pietrzak Michał , Chlebicka Aleksandra 
Published: January 2024

Background: Cooperatives are unique entities that combine both non-profit and business attributes, reflecting the dual nature of Gemeinschaft and Gesellschaft.
Research objectives: This article aims to explore the hybrid nature of cooperatives and the tension between community and business aspects in the context of the provision of collective goods. Specifically, we focused on the free-riding problem, which can harm the viability of cooperatives.
Research design and methods: We based the article on critical analysis and discussion of the literature. The research questions were as follows: What is the inherent nature of cooperatives? What is the essence of the free-rider problem in cooperatives? How could the dual nature of cooperatives help deal with the problem of free-riding?
Results: We discussed different Gemeinschaft-based approaches to mitigate free riding, such as kinship selection, direct reciprocity, and indirect reciprocity, which, however, create limitations on the size of the group of cooperators. There is tension between Gemeinschaft and Gesellschaft, as increasing membership for economic growth can lead to the erosion of social capital. We discussed three possible solutions, including massification, privatization, and leveraging the possibilities of online communities.
Conclusions: Only the last approach, namely leveraging possibilities of online communities offers the solution to the difficult situation caused by the tension between Gemeinschaft and Gesellschaft as it does not violate the cooperative identity while still allowing for increased scale of the operations.
AN ALTERNATIVE OIL SORBENT FOR REMOVING HYDROCARBON SPILLS FROM THE WATER SURFACE
Authors: Sanatullova Z. T. , Shaikhiev I. G. , Shaikhieva K. I. , Zamilova D. A. , Fadeeva M. A. 
Published: January 2024

It has been studied that there is a possibility of using biomass components (crushed leaves and stems) of topinambur (Heliánthus tuberósus) as a sorption material for removing oil hydrocarbons from the water surface. Literature data on the composition of leaves and stems of topinambur are given. In laboratory conditions, the values of the maximal capacity for oils of the Devon and Carbon deposits, as well as the maximal water absorption, are determined. Oils of Carbon and Devon deposits, produced by OGPD «Leninogorskneft» PJSC «Tatneft» (Republic of Tatarstan), are studied as sorbates. The processing of topinambur biomass components with weakly concentrated (0,5–2 %) solutions of sulfuric acid has been carried out and the physicochemical parameters of the modifiers have been determined, as well as the values of the maximum oil and water absorption. It has been determined that the acid modification contributes to an increase in the maximal oil absorption index, and with an increase in the concentration of sulfuric acid in the solution, this indicator also increases. It has been found that acid treatment increases the maximum water absorption in the leaves and reduces this indicator in the stems of the plant. It has also been shown that acid treatment of topinambur stems and leaves promotes partial hydrolysis of biopolymers that make up the plant biomass components and extraction into a modifying solution, which leads, in particular, to an increase in crystallinity. Data on the efficiency of removing oil films under laboratory conditions using native and modified with 2 % sulfuric acid biomass components of Helianthus tuberósus are presented. It is shown that acid-modified leaves and stems of topinambur contribute to some increase in the efficiency of removing oil films from the water surface and reduce water absorption. It is concluded that topinambur stems, modified with a solution of sulfuric acid seem to be very effective sorption materials for removing oil films on the water surface.
MODELING OF PERMANGANATE OXIDIZABILITY OF WATER SOURCE USING TIME SERIES ANALYSIS
Authors: Yalaletdinova A. V. , Malkova M. A. , Samus A. I. , Kantor E. A. 
Published: January 2024

Processing of time series of permanganate oxidizability at the surface water intake site for the period 1994–2021 (28 years) and comparison of the obtained results with the results of previous studies of the periods from 1994–2001 (8 years) and 1997–2014 (18 years) have carried out.
It was revealed that intra-annual seasonal changes in permanganate oxidizability, which had been observed earlier (8 and 18 years), persist over a 28 year period, however, the values of water permanganate oxidizability of water differ: 0.4–9.5; 0.6–13.3 and 0.4–13.3 mgO/dm3 for 8, 18 and 28year periods, respectively.
A stochastic change in the average annual values of permanganate oxidizability has been established, which since 2016 have become lower than the peak values of previous years.
It was found that the permanganate oxidizability of water in the water source is characterized by a growing trend, however, for the 28 year period, the values of the indicator increase more slowly compared to previous periods.
The trend constructed for the time periods under study revealed a downward trend in permanganate oxidizability since 2014, which affects the trend equations, as well as changes in the contributions of the time series components compared to the 8 and 18 year periods.
It was determined that for a 28 year period, the contribution to the permanganate oxidizability values of the seasonal variable compared to the 18 year period decreased and amounted to 71.6 %, and the share of the random variable increased to 27.8 %.
Comparison across periods indicates that the quality of source water in terms of permanganate oxidizability is different in each period. In this regard, when studying, it is necessary to split a large time series into smaller periods, since in this case it is possible to identify changes that are difficult to determine when studying a large period, since they occur recently, or lasted a short time, and did not completely change the overall trend, but had some influence.
Such significant changes in the seasonal and random components may indicate that the value of permanganate oxidizability of water, in addition to natural ones, can be influenced by the fact that water intakes are located on the territory of an urban agglomeration.
ANALYTICAL STUDIES OF THE INTERACTION OF DRILLING STRING ASSEMBLY WITH THE WALLS OF WELL WITH HORIZONTAL TAILING-IN
Authors: Mukhametgaliev I. D. , Agliullin A. Kh. , Chistov D. I. , Yakhin A. R. 
Published: January 2024

In modern conditions of well construction, it is necessary to develop and apply the most effective and economically profitable solutions for oil and natural gas industry. Drilling companies need to reduce the cost of drilling wells, especially those with directional and horizontal ones. One of the ways to reduce the cost of drilling directional wells and wells with horizontal termination is to improve calculation models that optimize the selection of parameters of the elements of the drilling string assembly for directional drilling. The issue of developing a methodology for calculating the deflecting force of the drilling string assembly remains relevant when using rotary controlled systems and non-magnetic drilling collars of a telemetry module with a downhole motor for drilling directional wells and wells with a horizontal termination. In connection with the sanctions and the changing geopolitical situation, it seems relevant to
improve the software in order to import substitution of the following products: Advantage, Wellplan, Compass, Schlumberger Drilling Office, Wellarchitect, Bhasyspro. The stiffness characteristics of the downhole tool, which can be calculated on the basis of the above software, do not allow the selection of individual elements of the drilling string assembly with the possibility of predicting the deflecting force on the bit, and thus there is no possibility of analyzing the intensity of the set of curvature of the trajectory of directional wells and wells with a horizontal termination.
In this regard, improving the methodology for selecting the parameters of the elements of the drilling string assembly for directional drilling and increasing the efficiency of its operation is an urgent task and can contribute to the further intensive development of well drilling technology.
WATERFLOOD EFFICIENCY ASSESSMENT USING REGRESSION ANALYSIS
Authors: Kharisov M. N. , Malov A. G. , Maiski R. A. , Kuleshova L. S. 
Published: January 2024

For quick waterflood efficiency assessment at oil fields, methods of visual analysis of the operating indicators of production and injection wells without calculating its quantitative characteristics are widely used. Thus, the development of analytical methods for calculating the effectiveness of measures taken on the injection wells is an urgent task.
The aim of the work is to improve the quality of the waterflood management process by developing an algorithm for quick assessing the additional oil production from geological and technical activities at injection wells.
To achieve this aim, regression analysis methods, genetic optimization methods, and methods of mathematical modeling of operating indicators using decline curves and displacement characteristics were used.
The authors proposed an algorithm for quick assessing the effectiveness of injection sites, which allows, using Data Science methods, to quantify additional oil production after carrying out geological and technical measures at injection wells.
APPROACH TO THE SELECTION OF TYPES OF POLYMER-COMPOSITE PIPES FOR FIELD PIPELINES
Authors: Garifullin A. A. , Burkutbaev A. B. , Romanchuk A. S. , Vinogradov P. V. , Kirillov D. A. , Nebogin D. A. 
Published: January 2024

The work is devoted to the use of polymer-composite pipes (PCP) in the field conditions of the oil and gas industry. Based on a review of existing types of non-metallic pipes of various designs used for the construction of field pipelines, a knowledge base of current technological solutions has been formed and their advantages and disadvantages have been identified. A catalog of technological solutions for field pipelines has been developed, which includes a description of the designs of PCP with their technical characteristics necessary for the design and operation of field pipelines. An applicability matrix has been developed that allows one to determine suitable types and designs of PCP according to technical principles for pipeline construction under certain conditions. The selection criteria are pipe sizes, operating parameters (pressure and temperature), service life, pumped media, purpose of the pipeline and resistance to aggressive media (CO2, H2S). If the PCP meets the specified conditions, this product is included in the matrix for further use in the construction and operation of the pipeline. However, in order to be able to equip fields with pipelines made of polymer-composite materials, it is necessary that solutions made from PCP are not only technically sound, but also economically justified in comparison with steel pipes. One of the main results of this study is the development of a feasibility study methodology (FS) of applicability, which allows us to determine the most effective option for the design and operation of pipelines made of PCP based on a comparison of economic indicators. The methodology was based on a comparison of the cost of steel and polymer-composite products, the cost of construction and installation work and the speed of their implementation, the cost of maintaining pipelines during operation, as well as the costs associated with pipe failures - to eliminate their consequences.
As part of the study, the accident rate of steel and polymer-composite pipes was also analyzed and studied, on the basis of which a methodology for predicting accident rates for PCP was created.
Finally, conclusions are made about the possibility of using the developed tools in the oil and gas industry.
A hydropower development perspective in Ecuador: past, present, and future
Authors: Naranjo-Silva Sebastian 
Published: January 2024

Ecuador is a small Andean country located in the western hemisphere of South America. The country has 361.747hm3 annual superficial water resources; As a result, Ecuador, in the last fifteen years (2005 to 2020), has been rapidly developing hydropower projects to triple the production in this renewable source. There were eight new hydroelectric plants constructed in Ecuador among 2007 and 2015 invested close to USD 6 billion the projects. Increased the energy response with renewables; for example, in 1985, the country produced 4 TWh, in 2005-registered 7 TWh, and to 2020, 24 TWh. According to the Electricity Corporation of Ecuador in 2020 reported that generated around 80% of all electricity through hydropower; thus, the article aims to critically analyze the development of hydropower in Ecuador in recent years and establish general energy projections to 2030 to expand the fields of knowledge and perspectives. The paper methodology is quantitative, according to scientific editorial sources, articles, investigative documents, and collects data from government agencies that regulate energy development in Ecuador. It is conclusive between a projection’s calculation, Ecuador will need for the year 2030 around 43 TWh, 47 TWh, or 52 TWh to supply the energy grid, according to the scenarios proposed (low, medium, high). Although hydropower will be essential to contribute to this requirement, the country has a barrier because hydropower is very sensitive to external factors of diverse nature, generating an uncertainly future directly associated with climatic effects.