bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rediscovery of Branchipus schaefferi (Branchiopoda: Anostraca) in Belgium - notes on habitat requirements and conservation management
Authors: Vanschoenwinkel Bram , Brendonck Luc , Pinceel Tom , Dupriez Pascal , Waterkeyn Aline 
Published: March 2024

Fairy shrimps (Crustacea, Anostraca) are specialized inhabitants of inland water bodies that
periodically dry or freeze over. Here we report the first observation since 1997 of a member of this basal crustacean order in Belgium and the first sighting of the species Branchipus schaefferi Fischer, 1834 since 1930. Nineteen populations were found in a restricted area located 55 km SE of Brussels in the Province of Hainaut. Based on a field survey, we discuss the habitat characteristics of these populations. We discuss also the distribution and habitat requirements of the species based on literature and formulate a number of guidelines for the conservation of this species as well as other large branchiopods in densely settled areas with intensive agriculture such as Belgium. Finally, we formulate a number of likely explanations for the lack of recent observations of these organisms in Western Europe and in Belgium.
Composite binders based on technogenic raw materials
Authors: Klyuev S. V. , Zolotareva S. V. , Ayubov N. A. , Fediuk R. S. , Liseitsev Yu. L. 
Published: March 2024

Introduction. Technological features of road construction require compliance with the requirements for road building materials in terms of physical and mechanical properties and performance characteristics. Control of structure formation processes in cement composite systems can be carried out by various methods and approaches, including choosing the optimal composition, adding special additives, regulating hydration conditions and using special processing methods. This makes it possible to improve the properties and characteristics of conglomerate materials, as well as eliminate or slow down the destruction of their structures. The purpose of this article is to develop composite binders for road use.Main part. It has been established that in composite binders with the replacement of 50% of Portland cement with waste from wet magnetic separation of ferruginous quartzites with an identified rational specific surface of 500 m2/kg, the activity remains practically at the same level as in the control additive-free compositions, which allows us to recommend this type of binder for development of concrete compositions for road construction.Conclusions. The addition of the identified rational content of the superplasticizer PFM-NLC (0.6 wt. %) to the co-milled Portland cement-MMC waste system made it possible to create a wide range of composite binders with setting times from 3 minutes. 5 sec. (start) up to 6 min. 35 sec. (end), bending activity up to 9.3 MPa and compression activity 60.7 MPa (with a ratio of bending activity to compression activity of up to 0.16).
Development of measures to increase the cruising range of electric buses by installing thermal control system based on phase transitional heat acumulating materials
Authors: Gorozhankin S. A. , Savenkov N. V. , Sobol O. V. , Morzhukhin A. M. 
Published: March 2024

Introduction. The problems of the mass use of electric buses on urban routes are low operational indicators, including the life of traction batteries (TAB), a significant limited autonomous travel compared to motor vehicles based on internal combustion engines, high cost of batteries, limited implementation of charging infrastructure, deterioration of efficient operation at low ambient temperatures, etc. Most operating parameters depend on the efficiency of replenishment, storage and consumption of electricity on board the electric bus, which include: power reserve, TAB life and economic costs for operation.Materials and methods. The work uses methods of numerical modelling of the movement of the KAMAZ 6282 electric bus under the conditions of the SORT 2: MIXED test cycle.Result. In this work, the balance of electric energy on board the КАМАZ 6282 electric bus during its operation on the city route was analyzed, and the search for the most rational ways of its consumption was carried out due to the introduction of thermal control systems for the passenger compartment and the driver’s workplace based on the installation of a heat accumulator (HA) with phase transfer heat accumulating materials (PFTAM).Discussion and conclusion. The installation of the proposed PFTAM-based system, provided that the range is provided at the level of the serial model, enables to reduce the battery capacity by 24% (up to 549 MJ) or, while maintaining the capacity of 720 MJ, increase the range by 44% up to 130 km.
EMPLOYEE PERFORMANCE MODEL THROUGH JOB SATISFACTION IN HEALTH OFFICE IN NORTH SUMATRA
Authors: Dalimunthe Letnan , Limakrisna Nandan , Lusiana  
Published: March 2024

Purpose: The aim of this study is to examine for This research was conducted to analyze and explain Employee Performance Model Through Job Satisfaction: Distributive Justice, Procedural Justice, Interactional Justice, Organizational Culture And Work Discipline in Padang Sidempuan City Health Office in North Sumatra

Theoretical Framework: The collecting data using a questionnaire of as many as 285 respondents in health office.

Design/Methodology/Approach: The research method used in this study is descriptive analysis and SEM (structural equation modeling) analysis with the help of
the SmartPLS program

Findings: The Results showed that there was an important positive direct effect of Interactional Justice on job satisfaction, Distributive Justice on job satisfaction, Procedural Justice on job satisfaction, Interactional Justice on Job Satisfaction, Organizational Culture on job satisfaction, Work Discipline on job satisfaction and job satisfaction on employee performanceon

Research, Practical & Social Implications: The study in this research is a positive and important indirect effect of Distributive Justice on Employee Performance through Job Satisfaction, Procedural Justice on Employee Performance through Job Satisfaction, Interactional Justice on Employee Performance through Job Satisfaction, Organizational Culture on Employee Performance through Job Satisfaction, Work Discipline on Employee Performance through Job Satisfaction

Originality/Value: The value of the study is most important positive direct effect of Interactional Justice on job satisfaction, important positive direct effect of Interactional Justice on Employee Performance and important positive indirect effect of Interactional Justice on Employee Performance through Job Satisfaction.
JOINT VENTURE, TECHNOLOGY TRANSFER AND THE PERFORMANCE OF NIGERIAN OIL AND GAS INDUSTRY
Authors: Olakada Nwoko Marshall , Bakare Akeem Adewale , Taiwo Muritala Adewale , Ibrahim Abass Umar , Abubakar Hauwa Lamino 
Published: March 2024

Purpose: The objective of this study is to examine joint venture, technology transfer on the performance of Nigeria's oil and gas sector between 1981-2021.

Theoretical Framework: It is indisputable that the Nigerian oil and gas sector is not at peak performance when compared to what is obtainable from its peers in the Organization of Petroleum Exporting Countries (OPEC) (Iheukwumere, 2021; OPEC, ASB 2020). One of the factors responsible for the abysmal performance is ineffective and incoherent technology transfer management through joint venture arrangements (Odusina, 2022). Therefore, there is a need to empirically investigate the impact of joint venture arrangements on Nigeria's oil and gas sector production which lacks sufficient research.

Methodology: The ex-post facto design was used where data were collected through secondary sources on the aggregate output of the joint venture companies and the total yearly output of the upstream sector of Nigeria’s oil and gas industry represented the performance of the Nigerian oil and gas sector in the period 1980 to 2021. The collected data were analyzed using the Quantile Autoregressive Distributed Lag (QARDL) approach to test for short and long-run impacts.

Findings: The study revealed that there is a significant impact of joint venture arrangements on oil and gas production in both the short run and long run.

Research, Practical & Social Implication: The study therefore recommends that policymakers and industry stakeholders should carefully evaluate the terms and conditions of joint ventures to ensure their alignment with the goals of maximizing oil and gas production.

Originality/Value: The use of joint venture as a proxy for technology transfer in the production of oil and gas in Nigeria and use of secondary data between 1980-2021 for joint ventures is an eye-opener for further exploration of the study areas in oil and gas production management, particularly in the area of technology transfer, which lacks sufficient research.
Child Preparedness Model in Facing Landslide Disasters
Authors: Rahmawati Ika , Kristyaningsih Putri 
Published: March 2024

Vulnerability in children occurs due to limited understanding of the risks that occur around them, resulting in a lack of preparedness. The Child Preparedness Model is a disaster management effort that focuses on children's preparedness in facing disasters. This research was carried out in stages, namely analyzing children's preparedness in facing landslides, followed by developing a Child Preparedness model to increase children's preparedness in facing landslides. The design of this research was a quantitative with a cross sectional approach. The research population was 120 children in Blimbing Village, Kediri Regency. The sampling technique used purposive sampling. The research instrument used a questionnaire to determine children's readiness to face the risk of landslides. The independent variable of this research was the Child Preparedness model and the dependent variable was children's readiness to face landslides. The data analysis by the SEMPLS test showed that input influences process control (p=0.001), process control influences effectors (p=0.01), effectors influence output (p=0.02), output influences resilience (p=0.004). There is a need to increase children's role in disaster management so that they are better prepared to face landslides.
The Effect of Implementation of Syam-OK Based Online Learning Policies and Lecturer Competence on Student Learning Motivation at the Faculty of Social Sciences and Law, Makassar State University
Authors: Agustina Nina , Guntur Muhammad , Niswaty Risma 
Published: March 2024

This study aims to examine the Effect of Implementation of Syam-Ok-Based Online Learning Policies and Lecturer Competence on Student Learning Motivation in the Faculty of Social Sciences and Law, Makassar State University. This type of research is a quantitative research using a descriptive approach. Data collection techniques were carried out by means of observation, interviews, questionnaires and documentation. The data analysis technique used consists of testing the validity and reliability of the instrument, descriptive statistical analysis, normality test and inferential statistical analysis. The results of the study show that the implementation of the Syam-Ok-based online learning policy is well implemented with a percentage of 75.73%, the competence of lecturers at the Faculty of Social Sciences and Law, Makassar State University is in the good category with a percentage of 79.20%, student learning motivation is in the good category with a percentage of 73%, the implementation of online learning policies based on Sham-Ok has a significant influence on student learning motivation with a percentage of influence of 56.9% in the medium category, lecturer competence has a significant influence on student learning motivation with a percentage of influence of 70.2% in the high category , and the implementation of Syam-Ok-based online learning policies and lecturer competencies together can influence student learning motivation in the Faculty of Social Sciences and Law, Makassar State University with an influence percentage of 70.4% in the high category and 29.6% influenced by other variables. Keywords: Policy Implementation, Lecturer Competence and Motivation
Development of a Cross-Asset Model for the Maintenance of Road and Water Pipe Assets using AHP Method
Authors: Jayakody J. A. N. N. , Nasvi M. C. M. , Robert D. J. , Navaratnarajah S. K. , Kurukulasuriya L. C. , Giustozzi F. , Gunasekara C. , Setunge S. 
Published: March 2024

Roads and water pipe assets undergo various deterioration processes due to the high demand for their services. Maintenance of these assets is often planned as individual assets, and the interdependency among different assets is neglected. An integrated framework for cross-asset maintenance is required for optimum utilization of the available funds for asset maintenance. To date, there are very few studies focusing on the use of the analytical hierarchy process (AHP) for cross-asset maintenance of roads and water pipe assets. Therefore, this research aims to develop an integrated fund allocation model for the maintenance of road and water pipe assets. A model was developed using AHP analysis based on expert opinions captured through a questionnaire in order to obtain optimum maintenance fund allocation for the cross-assets, roads, and water pipes. Then, a case study corridor segment with the considered cross-assets was selected, and a trade-off analysis was conducted for the intervention alternatives considering different levels of service (LOS) of the asset elements. The results of the trade-off analysis can be used to identify the optimum intervention alternative that satisfies the budget requirement and results in the maximum benefit. Overall, asset managers can use the approach presented in the present study to develop a cross-asset fund allocation model when multiple assets are involved in maintenance. Doi: 10.28991/CEJ-2024-010-02-01 Full Text: PDF
Influence of Filler Materials on Bituminous Mastic Rheology at High Temperatures
Authors: G. Sivaprakash , Ajithkumar Padmarekha 
Published: March 2024

The mixing and compaction temperatures of the bituminous mixture are determined by the viscosity of the binder. It was always a concern to understand the influence of the type of filler on the workability of the bituminous mixture. The interaction of the filler with the bitumen plays a key role in this. The inert filler has a physical interaction with the binder, and the active filler will have both a physical and chemical interaction. Based on the type of interaction, the viscosity and shear thinning characteristics of the mastic (binder + filler) change, which will hence influence the workability of the bituminous mixture. An experimental investigation is conducted to measure the viscosity of the mastic with two types of filler, one chosen from the active filler category (hydrated lime) and another from the inert filler category (quarry dust). A shear rate sweep experiment was carried out within the temperature range of 100 to 160 °C to analyze the Newtonian and shear thinning responses of the mastic. Results indicate that, for an equivalent weight proportion of the filler, mastic containing quarry dust exhibited elevated Newtonian viscosity and zero-shear viscosity (as predicted using the Carreau Yasuda Model). Additionally, quarry dust mastic demonstrated a higher rate of shear thinning. Consequently, the beneficial effect of shear thinning during the compaction of bituminous mixtures has the potential to enhance workability and streamline the compaction process. Doi: 10.28991/CEJ-2024-010-02-013 Full Text: PDF
Analysis and Prediction of Tidal Measurement Data from Temporary Stations using the Least Squares Method
Authors: Rusdin Andi , Oshikawa Hideo , Divanesia Andi M. A. , Hatta Muksan P. 
Published: March 2024

This research was conducted by equipping three temporary tidal stations located in three places inside Palu Bay with pressure-type tidal gauges. The stations recorded tidal series fluctuations for 4 months with a 5-minute sampling interval (Dt). Moreover, the simple and widely used least squares method (LSM) was applied to separate the harmonic constants of constituents, including amplitudes (Hi) and phases (gi), from the observed tidal series. A total of 11 dominant constituents were selected based on the largest magnitudes of tidal generating potential (CE), and these include M2, K1, S2, O1, P1, N2, Mf, K2, Mm, Q1, and Msf, which were diurnal, semidiurnal, and long-period constituents. The results showed that the semidiurnal constituents generated higher amplitudes than the diurnal constituents, while the long-period constituents produced quite small amplitudes. Furthermore, the ratios of amplitudes recorded showed that tidal in Palu Bay was mainly mixed with semidiurnal constituents. The difference between the observed and predicted values was quite small, and this showed the validity of the measurement conducted at the temporary tidal stations. The performance indicators applied also showed that LSM had acceptable accuracy compared to other methods. Moreover, tidal datums were calculated using the peak approach, and the average tidal range (RA) of Palu Bay was found to be 2.39 m. Doi: 10.28991/CEJ-2024-010-02-03 Full Text: PDF
Optimization of Dualistic Reservoir System Two-Dimensional Rule Curve with Three Allocation Rules
Authors: Muhaisen Nasser Kh. , Khayyun Thair S. , Al-Mukhtar Mustafa M. 
Published: March 2024

A two-dimensional operation chart is commonly used to manage the operation of a dual-reservoir system, where the water storage in each reservoir is accurately considered in the water-supply decision. The dual reservoir chart should be combined with one allocation rule to better represent water supply distribution between reservoirs. In this study, the 2D rule curve was coupled with three allocation rules: variable allocation ratios, fixed allocation ratios, and compensation regulation, to identify the efficiency of using these rules with the 2D rule curve in operating the dual reservoirs. Mosul-Dukan dual reservoirs in Iraq were implemented as a study area using monthly data extended from 2001 to 2020. The Shuffled Complex Evolution Algorithm was used to optimize the water allocation ratios. The results revealed that the variable allocation ratios were superior to the other two rules in terms of water deficit, in which the total water shortage of the variable allocation ratios rule was 56590 Mm3. The total shortage was less than that obtained by the fixed allocation ratio and compensation regulation rules by 0.9% and 56%, respectively. Finally, the variable allocation ratio was more suitable for application with a 2D reservoir rule curve than the two remaining rules (fixed allocation ratio and compensation regulation rules). The variable allocation ratios sustainably manage reservoirs in the regions that suffer from water scarcity and represent the most vulnerable to the impact of climate change. Doi: 10.28991/CEJ-2024-010-02-04 Full Text: PDF
Experimental and Numerical Analysis of Concrete Columns under Axial Load Based on European Design Norms
Authors: Grajçevci Florim , Mujaj Armend , Kryeziu Driton , Shehu Elfrida 
Published: March 2024

This study presents a comparison between numerical and experimental results for reinforced concrete columns subjected to axial compression. Depending on the columns support and their organization within the structure, columns primarily work under either concentric or eccentric compression, respectively, bending in situations where horizontal actions such as wind or/and earthquakes are present in the structure. Different countries have specific design codes, and in this study, the calculation of columns is based on the European design codes, specifically EN 1992-1-1. As a common practice in most cases during research, tests are conducted using computational models, and based on the obtained results through the application of similarity theory, an attempt is made to transition to the actual behavior of structural elements. Therefore, this paper applies a logic of "almost real" testing, where two columns with square cross-sections were produced and tested. The columns had a rectangular base with cross-section dimensions of 20/20 cm and a height (L) of 300 cm, with a concrete strength of fcm,cube=61.80 MPa. They were reinforced with longitudinal reinforcement (4Ø12 mm) and had a tensile strength of ftm=588.10 MPa. Additionally, stirrups of Ø8 mm were placed at every sw=25 cm. Experimental results show a closer alignment with software calculations using SEISMOSOFT with an accuracy of 96%, while results according to EN 1992-1-1, based on simplified methods, show 64% for the Nominal Stiffness Method and 59% for the Curvature Method. Doi: 10.28991/CEJ-2024-010-02-05 Full Text: PDF
Using Multilayer Perceptron Neural Network to Assess the Critical Factors of Traffic Accidents
Authors: Ruangkanjanases Athapol , Sivarak Ornlatcha , Weng Zi-Jie , Khan Asif , Chen Shih-Chih 
Published: March 2024

This study is based on the traffic accident data of Taoyuan City from the government's open data. The study compiled the data set of traffic accidents in Taiwan from 2012 to 2017, and six classifiers were applied to evaluate the effectiveness of traffic accident prediction with the number of injuries as the prediction target. In order to verify the classifier's stability, cross-validation was used to evaluate the model during the training process, and the multilayer perceptron neural network (MLPNN) classifier performed best in testing the dataset's accuracy and evaluating the model's best performance. Then, a boosting ensemble learning approach and a combination of traffic accident factors improve the experiment's performance. According to this experiment, the results show that this study uses the Pearson Chi-square feature selection method to select important traffic factor combinations, and the boosting method indeed helps improve the effectiveness of the construction of the traffic accident model. Finally, the experimental results of the NN-MLP model have a correct rate of 77% and AUC is 78.7%. In constructing the model, it was found that the degree of injury, the part of the vehicle hit, the type of accident, the leading cause, the type of vehicle, and the period of the accident were the main factors causing dangerous traffic accidents. Doi: 10.28991/HIJ-2024-05-01-012 Full Text: PDF
Língua de pedra: a ofensa (injúria e difamação) na discursividade política
Authors: Mariani Bethania 
Published: March 2024

Este artigo tem como objetivo analisar os processos de produção de sentidos envolvidos na formulação de ofensas no discurso político autoritário em vigor na política brasileira de 2019 até 2022. Inscrito no quadro teórico-metodológico da análise do discurso materialista, a análise mobilizou alguns conceitos, como discurso, materialidade discursiva, discurso político, o político, tipologia discursiva, gesto de interpretação, interpelação, identificação e resistência, dentre outros. Além disso, a própria ofensa foi objeto de conceituação bem como a noção língua de pedra, como sendo a língua áspera e dura onde as ofensas são produzidas e circulam. Na formulação da ofensa, engendrada nessa língua de pedra, não se pratica a escuta. É visando banir a alteridade, com seu modo de se significar e significar as ideias políticas, que a ofensa é formulada.