bluuebunny/crossref_metadata_2025 huggingface dataset:
A Detailed Kinetic Analysis of the Environmentally Friendly Leaching of Spent Lithium-Ion Batteries Using Monocarboxylic Acid
Authors: Sahu Sibananda , Pati Subhankar , Devi Niharbala
Published: May 2023

It is essential to develop a leaching procedure that uses minimal acid consumption, is economical, recovers large amounts of metal, and has a minimal negative impact on the environment. In this paper, a viable hydrometallurgical method using acetic acid as a leachant is suggested for recovering critical metals from waste LCO-type batteries. Several leaching parameters were examined in order to optimize the leaching conditions. With 1.2 mol/L acetic acid, 7% H2O2, 90 °C, an S/L ratio of 10 g/L, and a 60 min leaching period, the maximum leaching efficiencies of Li (99.6%) and Co (95.6%) were attained. By investigating the different kinetic models, it was feasible to figure out the reaction’s pace, as well as the mechanism involved in the leaching process. It was found, through the comprehensive kinetic studies of the leaching process, that the surface chemical reaction controls the leaching mechanism for waste LCO-type batteries. The economic viability of the current leaching procedure in comparison to those of earlier approaches is also discussed.
Influence of Cutting Process on the Flanging Formability of the Cut Edge for DP980 Steel
Authors: Chang Ying , Zhang Jiarui , Han Shuo , Li Xiaodong , Yu Shuzhou
Published: May 2023

Flanging is a key process in the forming of automobile parts and is influenced by the cutting process before it. In this paper, a set of self-designed tools is adopted. The flanging height and flanging radius are specified as the indexes to investigate the influence of the cutting process on the flanging formability of DP980 steel. Microstructure, microhardness, and tensile properties are tested to evaluate the formability of cut edges. The results show that the flanging formability is positively correlated with an increase in flanging height and a decrease in flanging radius. The flanging formability of six cut edges can be ranked as: LC-L > LC-H > WEDM-HS > WEDM-LS > CNC milling > WJC. In the LC process, acicular martensite is formed and the microhardness of the cut edge significantly increases, with a heat-affected zone of about 150 μm. More and larger microvoids are found on the edge of WEDM-LS than WEDM-HS, which reduces the formability to a certain extent. Plastic deformation of the edges is the reason for the decrease in the formability of CNC milling. For WJC, the formation of irregular edge damage and the generation of burrs are the main reasons for the unstable performance. This research is helpful in guiding the selection of the cutting process, and it may contribute to a high part formability for DP980 steel.
The Potential of Duplex Stainless Steel Processed by Laser Powder Bed Fusion for Biomedical Applications: A Review
Authors: Gatto Maria Laura , Santoni Alberto , Santecchia Eleonora , Spigarelli Stefano , Fiori Fabrizio , Mengucci Paolo , Cabibbo Marcello
Published: May 2023

The austenitic stainless steels utilized in the production of osteosynthesis devices are susceptible to crevice corrosion. Several studies have compared the corrosive behavior of austenitic and duplex stainless steels (DSS), both of which are recognized as viable biomaterials for tissue engineering applications. All of the in vitro and in vivo studies on animals and clinical results reported to date indicate that austeno-ferritic duplex stainless steel can be recommended as a suitable alternative to ASTM F138 steel, since it is resistant to crevice corrosion in the human body and presents superior mechanical properties. The use of DSS for biomedical applications is still under discussion, mainly due to the lack of knowledge of its behavior in terms of device heating or induced movement when exposed to magnetic fields, a potentially harmful effect for the human body. As a breakthrough production technology, additive manufacturing (AM) has demonstrated significant benefits for the fabrication of metal devices with patient-specific geometry. Laser powder bed fusion has particularly been used to manufacture DSS-based components. A fine control of the processing conditions allows for an understanding of DSS microstructural evolution, which is essential for selecting processing parameters and estimating performance, including mechanical properties and corrosion resistance. Furthermore, scientific investigation is necessary for determining the relationships among material, process, and magnetic properties, in order to establish the underlying principles and critical responses. The purpose of this review is to highlight the key performances of DSS for biomedical applications and to point out the relevant role of advanced processing technologies such as additive manufacturing.
Effects of the Volume Fraction of the Secondary Phase after Solution Annealing on Electrochemical Properties of Super Duplex Stainless Steel UNS S32750
Authors: Kim Dohyung , Chung Wonsub , Shin Byung-Hyun
Published: May 2023

Super duplex stainless steel (SDSS) is used for manufacturing large valves and pipes in offshore plants because of its excellent strength and corrosion resistance. Large valves and pipes are manufactured by forging after casting, and the outside and inside microstructures are different owing to the difference in the cooling rate caused by the thermal conductivity. This microstructural variation causes cracks during solution annealing, which breaks the materials. To study the corrosion resistance of the SDSS forged material, the influence of the microstructure according to the difference between the inside and outside cooling rates of the cast SDSS was evaluated. To analyze the effects of the secondary phase fraction before solution annealing on the solution and corrosion resistance, the corrosion resistance with and without solution annealing was measured using the potentiodynamic polarization test and critical temperature test after the precipitation of the secondary phase. In the potentiodynamic polarization test, the secondary phase decreased the activation polarization and increased the corrosion rate. The critical pitting temperature exhibited the effect of the secondary phase.
Magnetic CoFe2O4 and NiFe2O4 Induced Self-Assembled Graphene Nanoribbon Framework with Excellent Properties for Li-Ion Battery
Authors: Zhao Xiyu , He Chunyang , Bai Qiujv , Miao Xiangwen , Cao Cheng , Wu Tianli
Published: May 2023

A magnetically induced self-assembled graphene nanoribbons (GNRs) method is reported to synthesize MFe2O4/GNRs (M = Co,Ni). It is found that MFe2O4 compounds not only locate on the surface of GNRs but anchor on the interlayers of GNRs in the diameter of less than 5 nm as well. The in situ growth of MFe2O4 and magnetic aggregation at the joints of GNRs act as crosslinking agents to solder GNRs to build a nest structure. Additionally, combining GNRs with MFe2O4 helps to improve the magnetism of the MFe2O4. As an anode material for Li+ ion batteries, MFe2O4/GNRs can provide high reversible capacity and cyclic stability (1432 mAh g−1 for CoFe2O4/GNRs and 1058 mAh g−1 for NiFe2O4 at 0.1 A g−1 over 80 cycles).
Differentiation of Medicinal Plants According to Solvents, Processing, Origin, and Season by Means of Multivariate Analysis of Spectroscopic and Liquid Chromatography Data
Authors: Burdejova Lenka , Tobolkova Blanka , Polovka Martin , Neugebauerova Jarmila
Published: May 2023

Effects of processing and extraction solvents on antioxidant properties and other characteristics were evaluated for ten medicinal plant species originating from two different localities and two production years. A combination of spectroscopic and liquid chromatography techniques possessed data for multivariate statistics. Water, 50% (v/v) ethanol, and dimethyl sulfoxide (DMSO) were compared to select the most suitable solvent for the isolation of functional components from the frozen/dried medicinal plants. DMSO and 50% (v/v) ethanol were evaluated as more efficient for phenolic compounds and colorants extraction, while water was more useful for element extraction. Drying and extraction of herbs with 50% (v/v) ethanol was the most appropriate treatment to ensure a high yield of most compounds. The satisfactory differentiation of herbs (61.8–100%) confirmed the significant effect of the processing, geographical, and seasonal factors on target functional component concentrations. Total phenolic and total flavonoid compounds content, total antioxidant activity expressed as TAA, yellowness, chroma, and browning index were identified as the most important markers for medicinal plant differentiation.
The Recycling of Spent Lithium-Ion Batteries: Crucial Flotation for the Separation of Cathode and Anode Materials
Authors: Ma Xuesong , Ge Peng , Wang Lisha , Sun Wei , Bu Yongjie , Sun Miaomiao , Yang Yue
Published: May 2023

The recycling of spent lithium-ion batteries (LIBs) has attracted great attention, mainly because of its significant impact on resource recycling and environmental protection. Currently, the processes involved in recovering valuable metals from spent LIBs have shown remarkable progress, but little attention has been paid to the effective separation of spent cathode and anode materials. Significantly, it not only can reduce the difficulty in the subsequent processing of spent cathode materials, but also contribute to the recovery of graphite. Considering the difference in their chemical properties on the surface, flotation is an effective method to separate materials, owing to its low-cost and eco-friendly characteristics. In this paper, the chemical principles of flotation separation for spent cathodes and materials from spent LIBs is summarized first. Then, the research progress in flotation separation of various spent cathode materials (LiCoO2, LiNixCoyMnzO2, and LiFePO4) and graphite is summarized. Given this, the work is expected to offer the significant reviews and insights about the flotation separation for high-value recycling of spent LIBs.
Effects of Taraxerol on Oxidative and Inflammatory Mediators in Isoproterenol-Induced Cardiotoxicity in an Animal Model
Authors: Aodah Alhussain H. , Devi Sushma , Alkholifi Faisal K. , Yusufoglu Hasan S. , Foudah Ahmed I. , Alam Aftab
Published: May 2023

Myocardial infarction (MI) continues to be an important issue in healthcare systems worldwide, leading to high rates of morbidity and mortality. Despite ongoing efforts towards the development of preventive measures and treatments, addressing the challenges posed by MI remains difficult both in developed and developing countries. However, researchers recently investigated the potential cardioprotective effects of taraxerol utilizing an isoproterenol (ISO)-induced cardiotoxicity model among Sprague Dawley rats. Specifically, subcutaneous tissue injections consisting of 5.25 mg/kg or 8.5 mg/kg ISO were administered over two consecutive days as stimuli to induce cardiac injury. To investigate the possibility of preventing damage caused by ISO-induced cardiotoxicity by taraxerol treatment, five groups were formed: a normal control group (1% Tween 80), an ISO control group, an amlodipine group administered 5 mg/kg/day, and various doses of taraxerol. The study results showed that treatment significantly reduced cardiac marker enzymes. Additionally, pretreatment with taraxerol increased myocardial activity in SOD and GPx, leading to significant reductions in serum CK-MB levels along with MDA, TNF-α, and IL-6. Further histopathological analysis supported these observations, as treated animals had less cellular infiltration compared to untreated ones. These multifaceted findings suggest that oral administration of taraxerol could potentially protect hearts from ISO-caused damage by increasing endogenous antioxidant concentrations while decreasing pro-inflammatory cytokines.
Three-Channel Near-Field Display and Encryption Based on a Polarization Multiplexed Metasurface
Authors: Yuan Jiadong , Li Zuyu , Hong Yuhan , Zhang Yuhang , Liu Hongzhan , Wei Zhongchao
Published: May 2023

Multichannel metasurfaces are becoming a significant trend in the field of optical encryption due to their excellent manipulation of optical wavefronts. However, existent multichannel metasurfaces for optical encryption mostly implement only two channels in the near-field, or three channels by combining the near- and far-field. In this paper, we propose and simulate a three-channel metasurface that works entirely in the near-field and uses the polarization state of the incident light, left circularly polarized (LCP) light, right circularly polarized (RCP) light, and linearly polarized (LP) light as the security key. The metasurface consists of two types of nanostructures that work as a polarizer and a quarter-wave plate, providing an additional degree of freedom for encoding that enables independent near-field display at 633 nm wavelength incident light. The proposed three-channel metasurface has the advantages of high information density and high security, which will pave the way for multi-channel applications such as ultracompact displays, optical encryption, and information storage.
Inverse Design and Numerical Investigations of an Ultra-Compact Integrated Optical Switch Based on Phase Change Material
Authors: Yin Kun , Gao Yang , Shi Hao , Zhu Shiqiang
Published: May 2023

The miniaturization of optical switches is a promising prospect with the use of phase-change materials (PCMs), and exploring various strategies to effectively integrate PCMs with integrated optical waveguides represents an intriguing research question. In this study, an ultra-compact integrated optical switch based on PCM is proposed. This device consists of a Ge2Sb2Te5 nano-disk and an inverse-designed pixelated sub-wavelength structure. The pixelated sub-wavelength structure offers customized refractive indices that conventional materials or structures cannot achieve, leading to an improved insertion loss (IL) and extinction ratio (ER) performance of the device. Furthermore, this structure enhances the interaction between the optical field and GST, resulting in a reduction of the device size and the inserted GST footprint. With an ultra-compact device footprint of 0.9 µm × 1.5 µm, the simulation results exhibit a low IL of 0.45 dB, and a high ER of 18.0 dB at 1550 nm. Additionally, relevant studies show that this device is able to perform reliably despite minor variations in the manufacturing process.
Entrapment Syndrome in a Kidney Transplant Recipient with Cryptococcal Meningitis
Authors: Reddy Laya , Thompson George R. , Koff Alan , Cohen Stuart H.
Published: May 2023

Cryptococcus neoformans primarily affects immunocompromised individuals and the central nervous system (CNS) is the most common site of dissemination. Entrapped temporal horn syndrome (ETH) remains a rare CNS manifestation and has not previously been described in solid organ transplant recipients. Here, we present a case of ETH in a 55-year-old woman with history of renal transplant and prior treated Cryptococcal meningitis.
Mice as an Animal Model for Japanese Encephalitis Virus Research: Mouse Susceptibility, Infection Route, and Viral Pathogenesis
Authors: Frank Jordan C. , Song Byung-Hak , Lee Young-Min
Published: May 2023

Japanese encephalitis virus (JEV), a zoonotic flavivirus, is principally transmitted by hematophagous mosquitoes, continually between susceptible animals and incidentally from those animals to humans. For almost a century since its discovery, JEV was geographically confined to the Asia-Pacific region with recurrent sizable outbreaks involving wildlife, livestock, and people. However, over the past decade, it has been detected for the first time in Europe (Italy) and Africa (Angola) but has yet to cause any recognizable outbreaks in humans. JEV infection leads to a broad spectrum of clinical outcomes, ranging from asymptomatic conditions to self-limiting febrile illnesses to life-threatening neurological complications, particularly Japanese encephalitis (JE). No clinically proven antiviral drugs are available to treat the development and progression of JE. There are, however, several live and killed vaccines that have been commercialized to prevent the infection and transmission of JEV, yet this virus remains the main cause of acute encephalitis syndrome with high morbidity and mortality among children in the endemic regions. Therefore, significant research efforts have been directed toward understanding the neuropathogenesis of JE to facilitate the development of effective treatments for the disease. Thus far, multiple laboratory animal models have been established for the study of JEV infection. In this review, we focus on mice, the most extensively used animal model for JEV research, and summarize the major findings on mouse susceptibility, infection route, and viral pathogenesis reported in the past and present, and discuss some unanswered key questions for future studies.
Genome-Wide Identification and Expression Analysis of CCO Gene Family in Liriodendron chinense
Authors: Xue Guoxia , Hu Lingfeng , Zhu Liming , Chen Ya , Qiu Chen , Fan Ruifang , Ma Xiaoxiao , Cao Zijian , Chen Jinhui , Shi Jisen , Hao Zhaodong
Published: May 2023

Carotenoid cleavage oxygenase (CCO) is an enzyme that can catalyze carotenoids to volatile aromatic substances and participate in the biosynthesis of two important phytohormones, i.e., abscisic acid (ABA) and strigolactone (SL). However, the genome-wide identification and analysis of the CCO gene family in the rare and endangered woody plant Liriodendron chinense has not been reported. Here, we performed a genome-wide analysis of the CCO gene family in the L. chinense genome and examined its expression pattern during different developmental processes and in response to various abiotic stresses. A total of 10 LcCCO genes were identified and divided into 6 subfamilies according to the phylogenetic analysis. Subcellular localization prediction showed that most of the LcCCO proteins were located in the cytoplasm. Gene replication analysis showed that segmental and tandem duplication contributed to the expansion of this gene family in the L. chinense genome. Cis-element prediction showed that cis-elements related to plant hormones, stress and light response were widely distributed in the promoter regions of LcCCO genes. Gene expression profile analysis showed that LcNCED3b was extensively involved in somatic embryogenesis, especially the somatic embryo maturation, as well as in response to heat and cold stress in leaves. Furthermore, qRT-PCR analysis showed that LcNCED3b obviously responded to drought stress in roots and leaves. This study provides a comprehensive overview of the LcCCO gene family and a potential gene target for the optimization of the somatic embryogenesis system and resistance breeding in the valuable forest tree L. chinense.
A Controlled-Release Nanofertilizer Improves Tomato Growth and Minimizes Nitrogen Consumption
Authors: Helal Mohamed I. D. , El-Mogy Mohamed M. , Khater Hassan A. , Fathy Muhammad A. , Ibrahim Fatma E. , Li Yuncong C. , Tong Zhaohui , Abdelgawad Karima F.
Published: May 2023

Minimizing the consumption of agrochemicals, particularly nitrogen, is the ultimate goal for achieving sustainable agricultural production with low cost and high economic and environmental returns. The use of biopolymers instead of petroleum-based synthetic polymers for CRFs can significantly improve the sustainability of crop production since biopolymers are biodegradable and not harmful to soil quality. Lignin is one of the most abundant biopolymers that naturally exist.In this study, controlled-release fertilizers were developed using a biobased nanocomposite of lignin and bentonite clay mineral as a coating material for urea to increase nitrogen use efficiency. Five types of controlled-release urea (CRU) were prepared using two ratios of modified bentonite as well as techniques. The efficiency of the five controlled-release nano-urea (CRU) fertilizers in improving the growth of tomato plants was studied under field conditions. The CRU was applied to the tomato plants at three N levels representing 100, 50, and 25% of the recommended dose of conventional urea. The results showed that all CRU treatments at the three N levels significantly enhanced plant growth parameters, including plant height, number of leaves, fresh weight, and dry weight, compared to the control. Additionally, most CRU fertilizers increased total yield and fruit characteristics (weight, length, and diameter) compared to the control. Additionally, marketable yield was improved by CRU fertilizers. Fruit firmness and acidity of CRU treatments at 25 and 50% N levels were much higher than both the 100% CRU treatment and the control. The vitamin C values of all CRU treatments were lower than the control. Nitrogen uptake efficiencies (NUpE) of CRU treatments were 47–88%, which is significantly higher than that of the control (33%). In conclusion, all CRU treatments at an N level of 25% of the recommended dose showed better plant growth, yield, and fruit quality of tomatoes than the conventional fertilizer.
Vibration Characteristics of Concrete Pump Trucks with Multiple Postures and Multiple Conditions Based on the Secondary Development of HyperWorks
Authors: Ren Yafeng , Yang Weifeng , Sun Xiaohui , Zhi Jinning , Li Jie , Wang Haiwei
Published: May 2023

Due to the excitation generated by the periodically alternate pumping of dual-hydraulic cylinders, vibration of concrete pump trucks (CPT) occurs. Excessive boom vibration will seriously affect the service life and operation safety of CPT. At the same time, the long boom structure of a CPT makes it very sensitive to the posture and pumping conditions, which directly affect the vibration characteristics of CPT in different postures and different working conditions. This paper establishes a finite element model of a type of CPT. Through force analysis of concrete in the straight pipe and elbow pipe during the pumping and reversing stages, an excitation model of the conveying pipe is established. Based on the secondary development of HyperWorks, a finite element model of CPT with multiple postures is built, and the dynamic response under multiple conditions is analyzed. Finally, the accuracy of the finite element model of CPT and the excitation model of the conveying pipe is verified by experiment.
Post-Fire Analysis of Thermally Sprayed Coatings: Evaluating Microstructure, Mechanical Integrity, and Corrosion Behavior
Authors: Yasoda Ratna Divya , Hakim Nour , Huang Ying , Qi Xiaoning
Published: May 2023

This paper examines the impact of fire on the microstructural, mechanical, and corrosion behavior of wire-arc-sprayed zinc, aluminum, and Zn-Al pseudo-alloy coatings. Steel plates coated with these materials were subjected to temperatures in increments of 100 °C, starting from 300 °C and progressing until failure. Microstructural characterization, microhardness, abrasion resistance, and electrochemical impedance studies were performed on the post-fire coatings. The findings from this study show that heat had a positive impact on the performance of zinc and Zn-Al pseudo-alloy coatings when they were exposed to temperatures of up to 400 °C, while aluminum coatings maintain their performance up to 600 °C. However, above these temperatures, the effectiveness of coatings was observed to decline, due to increased high-temperature oxidation, and porosity, in addition to decreased microhardness, abrasion resistance, and corrosion protection performance. Based on the findings from this study, appropriately sealed thermal-spray-coated steel components can be reused after exposure to fire up to a specific temperature depending on the coating material.
An Investigation into the Conversion of Non-Hazardous Medical Wastes into Biogas—A Case Study from the Health and Family Planning Sector in Bangladesh
Authors: Rahman Khondokar M. , Melville Lynsey
Published: May 2023

This study aims to investigate the potential scope of rural bioenergy production from the valorisation of non-hazardous waste, particularly from institutional health and family planning facilities. A crude bioenergy production potential will be determined, as well as relevant interrelationships with food security, equality and inclusivity, poverty reduction, and their contribution to achieving sustainable development goals (SDGs). Solid waste generation at LAMB Hospital in Bangladesh was assessed. Its energy yield capacity and replacement of conventional, inefficient fuel sources were estimated, analysed, and specified. Results showed that the biogas yield capacity of non-hazardous solid waste from the LAMB hospital is 62 m3, which is equivalent to the gas required to cook 31 family meals. From small-to-medium institutes, such as the LAMB hospital, derived waste has the capacity to meet the cooking energy demand of rural villages. The electrical yield capacity of this amount of gas is 124 kWh, and this amount of energy can replace the use of 41 tonnes of firewood that cause emissions, deforestation, and increases the propensity for flooding. The adoption of Anaerobic Digestion (AD) for biogas production also has an impact on waste management, stimulating improved governance and infrastructure and supporting agriculture through the production of nutrient-dense biofertiliser. Further analysis showed that biogas not only provides a clean and affordable fuel but, in turn, has benefits with regard to health issues. Emissions from traditional cooking fuels have deleterious impacts on health due to Indoor Air Pollution (IAP), which generally affects women to a greater extent. All of these factors contribute to achieving sustainable development goals. This study could help to reduce environmental pollution from the health sector and mitigate climate change impacts, and there is a potential for scaling up this study nationwide.
Hybrid Vibration Control Algorithm of a Flexible Manipulator System
Authors: Nguyen Van Binh , Bui Xuan Cuong
Published: May 2023

Flexible manipulator systems in specific applications such as space exploration, nuclear waste treatment, medical applications, etc., often have characteristics superior to conventional rigid manipulator systems. However, their elasticity and complex dynamics lead to difficulties encountered in control processes. Research on improving the structure of the control model plays a very important role in reducing the above limitations and achieving great benefits for the flexible manipulator system. In this study, a general method for modelling a flexible robotic manipulator is introduced. Furthermore, two control models for flexible manipulators are proposed. The first model uses two proportional–integral–derivative (PID) controllers, where the first one is used for position control, and the other is applied for vibration reduction. The second model is an enhanced development of the first with the addition of a fuzzy logic controller to optimise oscillation suppression. Selected experimental results are presented and compared to evaluate the performance of the proposed control mechanisms.
Input Efficiency Measurement and Improvement Strategies of New Infrastructure under High-Quality Development
Authors: Wang Sai , Sun Xiumei , Cong Xuhui , Gao Yongkun
Published: May 2023

As a result of implementing new development concepts and absorbing new technical revolutions in the Intelligent Economy Age, new infrastructure is defined as a new driving force for high-quality development. However, as new infrastructure is constructed, there are problems such as the small scale of high-tech industries, weak economic support and human capital, and difficulty in carrying out new infrastructure construction projects, so it has become crucial to find solutions to these problems. Using the slacks-based measure model and Moran index, this study compares and analyzes the input efficiency of new infrastructure in 30 provinces of China from 2011 to 2020, alongside the analysis of temporal and spatial differences. China’s new infrastructure input generally shows a stable development trend in terms of efficiency, while the regional coordination still needs to be strengthened. Eastern China maintains a leading trend, Central China is developing rapidly, and the western region and Northeastern China do not form high-value agglomeration areas. This study puts forward relevant policy recommendations from four dimensions—optimizing the industrial structure, giving scope to government function, focusing on key areas, and compensating for weak links—to supply a powerful impetus for the development of new infrastructure.
Bidding Evaluation and Contractor Selection Using Balance Index Model and Comprehensive Input Efficiency Based on Data Envelopment Analysis
Authors: Liu Xun , Chen Siyu , Ding Zhenhan , Xu Bixiao
Published: May 2023

In order to ensure a smooth construction project, it is necessary to select an appropriate contractor. However, traditional bid evaluation methods are highly subjective in determining weights. Data envelopment analysis (DEA), a comprehensive bid evaluation method that considers multiple factors, was introduced to reduce subjectivity and provide a simple yet comprehensive method for evaluating bids. Based on the existing cross-evaluation and balance index models, this research proposed a new DEA ranking model—the comprehensive input efficiency model, as well as its specific application steps. Additionally, a case study on selecting contractors for a water engineering project was presented to demonstrate the effectiveness of this model. The results indicated that the comprehensive input efficiency model could achieve the same ranking function as the balance index and was suitable for assessing bidders’ relative efficiency. Moreover, the comprehensive input efficiency model proposed in this research is more simplified. Thus, this research compensates for the drawbacks of the existing comprehensive evaluation models in that the bid evaluation process is cumbersome, thereby extending the research on DEA methods in bid evaluation. Additionally, the model provides tenderers with a more efficient and effective bid evaluation method to select the most appropriate contractor. In the future, research may be conducted to apply DEA to other types of projects, including service projects, real estate, and consulting services.
Results on SARS-CoV-2 mRNA Vaccine Booster from an Open-Label Multicenter Study in Ofatumumab-Treated Participants with Relapsing Multiple Sclerosis
Authors: Ziemssen Tjalf , Schlegel Eugen , Groth Marie , Ettle Benjamin , Bopp Tobias
Published: May 2023

Background: Few data exist on how ofatumumab treatment impacts SARS-CoV-2 booster vaccination response. Methods: KYRIOS is an ongoing prospective open-label multicenter study on the response to initial and booster SARS-CoV-2 mRNA vaccination before or during ofatumumab treatment in relapsing MS patients. The results on the initial vaccination cohort have been published previously. Here, we describe 23 patients who received their initial vaccination outside of the study but booster vaccination during the study. Additionally, we report the booster results of two patients in the initial vaccination cohort. The primary endpoint was SARS-CoV-2-specific T-cell response at month 1. Furthermore, serum total and neutralizing antibodies were measured. Results: The primary endpoint was reached by 87.5% of patients with booster before (booster cohort 1, N = 8) and 46.7% of patients with booster during ofatumumab treatment (booster cohort 2, N = 15). Seroconversion rates for neutralizing antibodies increased from 87.5% at baseline to 100.0% at month 1 in booster cohort 1 and from 71.4% to 93.3% in booster cohort 2. Of note, 3 of 4 initially seronegative patients in booster cohort 2 and one seronegative patient in the initial vaccination cohort seroconverted after the booster during ofatumumab treatment. Conclusions: Booster vaccinations increase neutralizing antibody titers in ofatumumab-treated patients. A booster is recommended in ofatumumab-treated patients.
Controversies in Heterogeneous Classrooms, Adolescents’ Experiences of Social Cohesion in Brussels and Its Schools
Authors: Mansoury Babhoutak Elham , Saeys Mathis , Kavadias Dimokritos
Published: May 2023

As globalisation changes the sociocultural architecture of urban areas, adolescents increasingly interact with different sets of values and worldviews, which can be a potential cause of conflict and anxiety. To date, there is little empirical research on how adolescents perceive and experience social cohesion in a superdiverse metropolitan context such as the Brussels Capital Region. In this study, we elaborate on the relationship between social cohesion and ethnic diversity, using controversial topics as instruments to examine the erosion of social cohesion. To expose these processes, 34 in-depth interviews were conducted with pupils from Dutch-speaking secondary schools in Brussels. Through thematic analysis, the data revealed four overarching themes of controversies: Brussels, religion/philosophy, ethnicity/national belonging and political horizon, epitomising a paradox of conflict and consensus. Notably, during the interviews, the adolescents reported a climate shaped by actions of ‘silencing’, ‘avoiding’ and ‘voicing’ when discussing controversies in a heterogeneous classroom context. This analysis of adolescents’ perceptions of social cohesion hence corroborates the premise that conflict is not the opposite of cohesiveness, but rather an integral part of a pluralistic society.
Research on the concept of social civic power: Focusing on Text Mining Methods
Authors:   The Korean Association 0f Ngo Studies, Shin Sangjoon , Kim Yong-hee
Published: May 2023

The purpose of this paper is to confirm the conceptual features of social civic power. Social civic power is a concept that has recently emerged and is used in civil society, lifelong education, and social welfare. However, since academic discussion and research on the concept have not progressed, there is inclined to define and approach it in various ways depending on the user. In order to achieve the purpose of this papaer, we conducted 1:1 interviews with a total of 15 experts and practitioners related to research, lectures, and activities on social civic power. For analysis, semantic network analysis and CONCOR (CONavergence of iteration CORealtion) analysis were applied among text mining, which is a big data analysis method. As a result, social civic power emphasizes participation in everyday activities in a village or region in various ways, and the participation is based on the purpose of realizing democratic values and community interests. And it focuses on individual or organized civic participation by securing personal capacity. The background of the emergence of social civic power shares the same feature as the new social movement, which focuses on civic activities that value daily closeness and activities rather than checking government power. It is suggested that it is necessary to study the conditions and results of social civil power in the future through this study.
Polycrisis and the Sustainable Democracy: Focusing on the effectiveness and the efficacy of Democracy
Authors:   The Korean Association 0f Ngo Studies, Lee Wonyoung
Published: May 2023

Nowadays, the world faces the ‘Polycrisis’ which may be called as the systemic risk. The climate crisis, the geo-political crisis, and the risk of the stagflation etc., which are universe not to be limited to the specific country but to impact to all the countries which exist in the global system. However, all the countries have the accumulated but not-solved problems in accordance with their social condition in them. Those can be appeared as the special crisis combined with the global polycrisis. In Korea, there are the most critical three problems. One is the inequality problem which makes the political, economical and social polarization more serious since the financial crisis in 1997. The other is the population extinction, which leads the province extinction and the hyper-aging society. Those problems combined with the global polycrisis, construct the Korean special crisis. But the populistic political trend, which is the last critical problem, makes the Korean special crisis more difficult to overcome. The populistic political trend only focuses on the political attack to the rival party for the political interest. And what is worse, they attack the rival party even with the fake news. Some of those crises result from the Neo-Liberalism paradigm. Or Neo-Liberal paradigm exacerbates some of those crises. Thus to overcome the crises, at first, we need the transition from the Neo-Liberal paradigm. And if we do not overcome through the effectiveness and the efficacy of democracy, the threat to the democracy itself like the emergence of populism will be strenthened. The direction to overcome the crises coincides with the accomplishment of SDGs (Sustainable Development Goals) which was resolved at UN General Assembly in 2015. Therefore, we need the ‘Sustainable Democracy’ paradigm as the new paradigm to overcome the crises and for the sustainability of the democracy.
Methodology for the management of Academic projects requirements in Research calls for a requirements organizing system
Authors: Vargas-Pérez Vanessa Atenea , Vargas-Pérez Laura Silvia , Dibut-Toledo Lázaro Salomón
Published: May 2023

In this research work, a methodology for a requirements organizing system based on requirements engineering techniques and project management standards is proposed, which allows monitoring and supporting the planning and managment of the requirements of projects participating in different academic calls for proposals issued by sponsoring organization for academic projects. As a case study, the research calls of the PRODEP a program for the Teacher Professional Development of the SEP (Secretaría de Educación Pública), of México was selected. This system will allow to understand and satisfy customer needs, the designers, to monitor and control their projects, from the beginning to the end. The methodology of a requirements organization system allows the assimilation of good practices in the areas of requirements engineering, information quality, among others.
Social and university networks. Study on the perception of privacy and its management
Authors: Garizurieta-Bernabe Jessica , Gonzlález-Benítez Rubén Álvaro , Morales-Toxqui Jazmin , Ramírez-Sánchez Jesús
Published: May 2023

Virtual social networks have established themselves as the tool for greater communication between young university students. Through them, they allow the exchange of information, in addition to sharing experiences and creating social relationships quickly. This article determines indices of factors to explain the use of social networks in students; On the other hand, there are bad practices in the use of these, exposing personal information. Some of the main dangers in social networks are identity theft, spam, cyberbullying, defamation, sexting and sextortion, to name a few. The objective of the current work is to analyze the use of social networks by university students, since this can be explained by the factors of integrity, ease of use, attitude, and intention. Likewise, it is directly related to the satisfaction of the needs of inclusion, belonging and social recognition. The study was carried out in the population of four programs belonging to the Universidad Veracruzana (UV), specifically the Faculty of Accounting and Administration (FCA), and although the four programs can be considered as digital natives, the data expose that they require education in terms of digital literacy. It also analyzes how to manage these social networks and know how informed they are about: the privacy notices that social networks handle, with whom they expose personal information and what happens to the information they publish, also, knowledge regarding security measures in social networks.
Participatory and democratic school management for the development of safe and inclusive learning environments in special education services
Authors: Medina-Romero Rodolfo Ernesto , Salas-Name Sagrario Lizeth , Monreal-Esquivel Claudia Elizabeth , Soto-Rivera Jesús Abraham
Published: May 2023

Safe and inclusive learning environments represent an option for the attention of children with special needs in education services in accordance with the goals of the 2030 agenda, a proposal ratified by the New Mexican School through participatory and democratic management. Objective: to describe how participatory and democratic school management can influence the achievement of safe and inclusive learning environments in special education services. Methodology: a desk research was conducted as recommended by Uddin (2010), gathered data in bibliographic sources related to participatory and democratic school management, safe and inclusive learning environments and special education services, mainly informative desk research resources were used according to Esmeral (2022); in order to formulate a range of possibilities for the development of safe and inclusive environments in special education services taking into account the objectives of participatory and democratic management. Contribution: a vision of how participatory and democratic school management can favor the development of safe and inclusive learning environments in special education services is presented.
Reseña. Historias de mujeres, historias de vida en Torralba del Río
Authors: Echávarri Berraondo Amaia
Published: May 2023

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Nuevas estelas discoideas en Sos del Rey Católico y Navardún (Aragón)
Authors: González Bravo Sara
Published: May 2023

El presente artículo pretende comunicar la existencia de nuevas estelas discoideas pro-cedentes de las localidades aragonesas de Sos del Rey Católico y de Navardún, próximas a Navarra. Para ello, se van a estudiar los posibles lugares de procedencia de las mismas, posteriormente se va a llevar a cabo una descripción de los ornamentos y su simbología, a continuación, se va a realizar una clasificación de las estelas y una búsqueda de paralelos y se va terminar con las conclusiones. Estas han ayudado a ampliar el catálogo de estelas discoideas conocidas en las Cinco Villas de Aragón.
Propiedad, pastos y amojonamiento de Biurrun a través de las Ordenanzas de 1544
Authors: Uria Blanco Naiara
Published: May 2023

Se publican las Ordenanzas municipales de Biurrun (Valdizarbe, Navarra) de 1544, precedidas de un estudio introductorio. Conservadas en el Archivo Municipal de Biurrun-Olcoz, su contenido regula cuestiones relativas a pastos, propiedades rústicas y urbanas o cierre de heredades, entre otros aspectos.
El ritual del juicio, muerte y quema de Judas en Navarra y Álava
Authors: Chasco Oyón José Ángel
Published: May 2023

Rito mágico ancestral de la purificación del mal mediante la quema de Judas celebrado en Navarra y Álava por Pascua de Resurrección. Esta fiesta social llena de encanto trata de señalar y criticar los males acaecidos en los pueblos durante el año. La tradición de la cultura inmaterial es recogida visitando los lugares en donde se desarrolla y hablando con las personas mayores, únicos testigos de cómo se hacía en el pasado ante la falta de documentación histórica. El mal personificado en un pelele de paja, llamado Judas, es destruido mediante el fuego, quedando los pueblos liberados y purificados. El invierno queda atrás y renace la primavera.
Ugaltarriak. Proyecto cultural sobre los suelos de cantos rodados del valle de Roncal
Authors: Larraza Micheltorena María del Mar
Published: May 2023

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Aramaioko hizkera
Authors: Ormaetxea Lasaga Jose Luis
Published: May 2023

Aramaioko euskararen azterketa egiten da lan honetan. Sarreran Aramaiori buruzko datu batzuk eman ostean, lana egiteko erabili diren zenbait irizpide metodologiko eskaintzen dira, eta oinarri teorikoak aipatu. Ondoren, hizkera honen azterketa linguistikoa egiten da, honako atal hauek bereiziz: fonologia, izenaren morfologia, aditzaren morfologia eta morfosintaxia. Azkenik, ondorioetan, Aramaioko hizkeraren kokagunea zehazten da (mendebalarekin lotzen duten eta banatzen duten ezaugarriak emanez, eta baita Arabarekin lotzen dutenak), eta Aramaioko euskararen eta (Aramaioko auzo den) Oletakoaren arteko desberdintasunak seinalatzen dira
Sakaneren gainean egindako azterketak argitze aldera
Authors: Erdozia Mauleon Jose Luis
Published: May 2023

Artikulu honen bitartez aldizkari honetan, aurreko bi zenbakitan (97 eta 98), plazaratu genituen bi artikuluri (“Irañetako hizkera” eta “Sakanerak”) buruzko argibideak eman nahi izan ditugu, horietan egiten genuen zenbait baieztapen auzitan ezartzen zuelako Iñaki Camino dialektologoak “Arakilgo euskara: kokagunearen auzia eta datuen fidagarritasuna” artikuluan, aldizkari bereko 99. zenbakian. Hau dela eta, zertan oinarriturik egin ditugun gure baieztapenak azaltzen dugu eta, horrekin batera, Sakana haranean bereizi ditugun bi hizkera eremuen ezaugarri esanguratsuenak ere bertan agertu ditugu.
Antzinako baztanera: XVIII. mendeko prediku argitaragabe bat
Authors: Lekaroz Mazizior Gorka
Published: May 2023

Aztergaia 1791ko abendualdirako prestatu zen baztanerazko prediku bat da. Egilearen izenik ez dakarren arren, Bonaparte Ondarean bildutako sermoi garaikide batzuk eta honako hau esku berberak idatzi zituela esan daiteke. Idazkia ezagutzera emateaz gain, XVIII. eta XIX. mendeetako beste hainbat testurekin alderatu da, orduko baztandar euskara idatziaren zenbait ezaugarri gogora ekarri eta laburbildu asmoz.
Luzaideko eta Ondarrolako hiru gutun
Authors: Kamino Kaminondo Peio , Salaberri Zaratiegi Patxi
Published: May 2023

Lan honetan Uruguaiko Salto hiritik herrialde horretako Montevideora igorritako 1893ko bi gutun eta 1904ko Luzaideko beste bat ematen ditugu argitara. Lehen bien egileak Arnegiko Ondarrola auzokoak ziratekeen, ibiltzen duten euskara lekuaren gainean egiten den berbera ez bada ere. Hirugarrena Luzaiden idatzia da eta dudarik gabe herri honetako hizkeran izkiriaturik dago.
Arabako ekialdea eta Sakanako continuumaren azterketa diakronikoa
Authors: Erdozia Mauleon José Luis
Published: May 2023

Artikulu honetan Arabako Ekialdeko garai bateko euskara eta Nafarroako Mendebaldeko Sakana haranekoaren (Burundakoa batez ere) arteko hizkuntza kidetasunak aztertu dira. Azterketa burutzeko, XVI., XVII. eta XVIII. mendeko zenbait material (Landuchio, Lazarraga, Portal, Gamiz, Garcia de Albeniz) erabili dira, horietako edukia Sakanako egungo hizkerarekin parekatu delarik. Honetaz gain, bi eremuetako toponimia ere izan da kontuan. Azterketa diakronikoa, beraz, hemen buruturikoa, eta lagungarri suerta daiteke bi eremuen arteko garai bateko continuum geolektalaren teoria frogatzeko.
Etxalarko usategiei buruzko gutunak
Authors: Apezetxea Zubiri Pello
Published: May 2023

Franko entzuna da Etxalarko Usategieta, bertako sarez egiten den uso ehiza motagatik. Nafarroa eta Lapurdi arteko mugan, Etxalar eta Sarako dermioetan, bietako jendeak dira partaide, sareak Etxalarkoan badaude ere, trapak Sarakoan baitira. Bi aldeetakoak dabiltzanez gero, nahitaezkoa dute harremana, elkarren lana edo baldintzak egokitzeko eta hitzartzeko. Harremanetarako bide eta tresna, XIX mendean, elkartzea zen, horretarako hautatua zuten mugako Nabarlatsa lekuan, edo eta gutunak igortzea konfiantzako mezularien bidez. Hauexek ditugu irakurgai gaurko honetan. Etxalarko Francisco Javier Berrueta eta Victoriano Arribillaga dira Etxalartiko gutunen idazleak; Saratikoak, berriz, Ithurbide, Bernardo Dihursubehere eta Etchatsek idatzi zituzten, 1826-1865 urteetan.
Aitzin-euskararen kontsonantismoa
Authors: Martínez Areta Mikel
Published: May 2023

Lan honetan Koldo Mitxelenaren euskara zaharraren berreraiketa fonologikotik abiatuz, ‘Aitzin-Euskara Zaharra’ izenda dezakegun eta Mitxelenarena baino garai zaharrago bati dagokion hizkuntzaren aitzin-sistema fonologikoa berreraikitzen saiatzen gara. Horretarako, Joseba Lakarrak azken urteotan euskararen erro zahar disilabikoen azterketa morfo-fonologiko zein etimologikoan burutu dituen aurrerakuntzetan oinarritzen gara. Alde batetik, erro disilabiko horiek garai zaharrago batean bi erro monosilabikoez osaturiko egitura perifrastikoak izan zirela onartzen dugu. Beste alde batetik, azterketa honek barne-berreraiketa fonologikorako bidea urratzen duelakoan gaude, elementu monosilabiko hauek testuinguru fonetikoaren arabera erakusten dituzten formen arteko txandaketen erkaketak forma zaharrak nolakoak ziren zehazten lagun diezagukeelarik.