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Upconversion luminescence and thermosensitive properties of NaGd(PO3)4:Yb3+/Er3. NaGd(PO3)4:Yb3+/Er3 的上转换发光和热敏特性。
IF 3.4 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-10-29 eCollection Date: 2024-11-15 DOI: 10.1016/j.heliyon.2024.e39951
Jintao Xu, Shanlin Zhu, Canyuan Liao, Weijun Zhao, Xingyuan Zhong, Zijun Wang, Jiuping Zhong

High-sensitivity optical temperature measurement has attracted extensive attention in both fundamental studies and practical applications. In this study, a series of upconversion (UC) luminescence phosphors composed of NaGd(PO3)4 (NGP) doped with 20 at% Yb3+ and various concentrations of Er3+ (0.5 at% as the optimal concentration) was synthesized by high-temperature solid-state method. And their crystal structure and the distribution of lanthanide dopants were analyzed using X-ray diffraction with Rietveld refinement verifies. Under 980 nm laser excitation, the obtained phosphors show the characteristic Er3+ upconversion green and red emission bands through two-photon processes. The fluorescence intensity ratio (FIR) based on the thermal coupled states demonstrates the thermal sensing ability in a wide temperature range of 200-573 K. The thermal sensitivity is relatively high with the maximum absolute thermal sensitivity S a of 0.53 % K-1 (523 K) and the maximum relative thermal sensitivity S r of 2.60 % K-1. The phosphor NGP:Yb/Er also exhibits high repeatability as the thermal sensors reach 97 %. These findings postulate the potential of NGP:Yb/Er as a promising candidate in optical thermal sensing applications.

高灵敏度光学温度测量在基础研究和实际应用中都引起了广泛关注。本研究采用高温固态法合成了一系列由掺杂 20%Yb3+ 和不同浓度 Er3+(0.5% 为最佳浓度)的 NaGd(PO3)4(NGP)组成的上转换(UC)发光荧光粉。利用 X 射线衍射和里特维尔德细化验证分析了它们的晶体结构和镧系掺杂物的分布。在 980 nm 激光激发下,所获得的荧光粉通过双光子过程显示出特征性的 Er3+ 上转换绿色和红色发射带。基于热耦合态的荧光强度比(FIR)证明了该荧光粉在 200-573 K 宽温度范围内的热感应能力,其热灵敏度相对较高,最大绝对热灵敏度 S a 为 0.53 % K-1 (523 K),最大相对热灵敏度 S r 为 2.60 % K-1。荧光粉 NGP:Yb/Er 还具有很高的重复性,热传感器的重复性达到 97%。这些发现表明,NGP:Yb/Er 有潜力成为光学热感应应用中的理想候选材料。
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引用次数: 0
Bond behavior of confined rebar in recycled brick aggregate concrete using bending pullout test. 利用弯曲拉拔试验研究再生砖骨料混凝土中受限钢筋的粘结行为。
IF 3.4 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-10-29 eCollection Date: 2024-11-15 DOI: 10.1016/j.heliyon.2024.e39925
Tanvir Hassan Tusher, Khondaker Sakil Ahmed, Saleh Bin Ibrahim Sarker

The pertinence of recycled brick aggregate (RBA) in concrete structures largely depends on their bonding ability with the rebars. Considering the practical detailing of concrete structures where main rebars are usually confined by stirrups, this study conducted bending pullout tests on 12 beam specimens to study the influence of concrete confinement on the bond behavior of rebar in RBA concrete. The investigated variables include RBA%, rebar diameter (d), embedment length (le ), and the ratio of concrete cover to rebar diameter (c/d). Bond stress-slip relationships were acquired, analyzed, and average bond strengths were compared to the AS 3600, CEB-FIP codes, and existing MacGregor's model. The average bond strength of confined specimens was nearly double that of the unconfined specimens. A progressive increase in bond strength was noticed with the presence of RBA regardless of confinement. The confined specimens also exhibited higher deformability, ductility, and toughness values than those of the unconfined beams. At 15% RBA content, the maximum toughness value of the confined specimen was 3078.1 J, while the unconfined specimens reached a value of 278.1 J, only. Similarly, the ductility of the confined beam was found in a range of 1.21-1.60 whereas the value is only 1.04-1.10 for the unconfined cases. Moreover, the confined specimens exhibited a significant number of cracks during their failure, while the unconfined specimens experienced a split type brittle failure. Nevertheless, these findings may contribute to the further development of the bond behavior of rebar in RBA-based concrete structures and thus play a role in the sustainability of construction materials.

混凝土结构中再生砖骨料(RBA)的相关性在很大程度上取决于其与钢筋的粘结能力。考虑到混凝土结构的实际细部设计中,主钢筋通常由箍筋约束,本研究对 12 个梁试件进行了弯曲拉拔试验,以研究混凝土约束对 RBA 混凝土中钢筋粘结行为的影响。研究变量包括 RBA%、钢筋直径 (d)、预埋长度 (le ) 以及混凝土覆盖率与钢筋直径之比 (c/d)。获得并分析了粘结应力-滑移关系,并将平均粘结强度与 AS 3600、CEB-FIP 规范和现有的 MacGregor 模型进行了比较。封闭试样的平均粘结强度几乎是非封闭试样的两倍。无论密闭与否,粘接强度都随着 RBA 的存在而逐渐增加。密闭试样的变形性、延展性和韧性值也高于非密闭梁。当 RBA 含量为 15%时,密闭试样的最大韧性值为 3078.1 J,而非密闭试样的最大韧性值仅为 278.1 J。同样,封闭梁的延展性在 1.21-1.60 之间,而非封闭梁的延展性仅为 1.04-1.10。此外,密闭试样在破坏过程中会出现大量裂缝,而非密闭试样则会出现劈裂式脆性破坏。尽管如此,这些发现可能有助于进一步发展基于 RBA 的混凝土结构中钢筋的粘结行为,从而在建筑材料的可持续性方面发挥作用。
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引用次数: 0
Impact of NPS rates on growth and yield of garlic (Allium sativum L.) varieties in greenhouse. 氮磷钾比率对温室大蒜(Allium sativum L.)品种生长和产量的影响。
IF 3.4 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-10-29 eCollection Date: 2024-11-15 DOI: 10.1016/j.heliyon.2024.e39963
Eshet Lakew Tesfaye, T Bayih

Garlic (Allium sativum L.) has both culinary and medical applications. However, the low and uneven nutrient availability in the soil frequently limits the garlic yield. This study aimed to select adaptable garlic varieties under greenhouse conditions using a pot of soil taken from Awada and Wondo Genet and to identify the optimum rates of the newly introduced mineral nitrogen, phosphorus, and sulfur (NPS) fertilizer on the growth, yield, and yield parameters of the crop. Four garlic varieties; Bishoftu Nech, Tsedey 92, Kuriftu, and local variety were used and treated with four levels of NPS (0-0-0, 78.75-69-12.75, 105-92-17, and 131.25-115-21.25 kg ha-1). The experiment was triplicated and conducted with a randomized complete block design (RCBD). Growth characteristics of the four garlic varieties were evaluated, including days to 50 % emergence, plant height, leaf number per plant, leaf length, fresh weight, dry weight, average bulb weight, and total bulb yield. The findings of this study indicated that the growth, yield, and yield parameters of all four garlic varieties from Awada soil rose as the rates of NPS increased. However, all growth and production parameters of the four garlic varieties gradually fell, starting from the blanket recommendation from Wondo Genet soil. According to this research, the usage of NPS at the rate of (131.25-115-21.25 kg ha-1) resulted in improved growth in Awada soil. Similarly, the rate of (78.75-69-12.75 kg ha-1) was optimum at Wondo Genet soil. In conclusion, determining the optimum rates of the NPS is essential to increase garlic productivity.

大蒜(Allium sativum L.)具有烹饪和医疗用途。然而,土壤中养分含量低且不均匀,经常限制大蒜的产量。本研究旨在利用取自 Awada 和 Wondo Genet 的一盆土壤,在温室条件下选择适应性强的大蒜品种,并确定新引入的矿物氮、磷、硫(NPS)肥料对作物生长、产量和产量参数的最佳比率。试验使用了四个大蒜品种:Bishoftu Nech、Tsedey 92、Kuriftu 和当地品种,并施用了四种水平的 NPS(0-0-0、78.75-69-12.75、105-92-17 和 131.25-115-21.25 公斤/公顷)。试验采用随机完全区组设计(RCBD),共进行了三次。对四个大蒜品种的生长特性进行了评估,包括出苗天数、株高、单株叶片数、叶片长度、鲜重、干重、平均鳞茎重和鳞茎总产量。研究结果表明,随着氮磷钾施用量的增加,阿瓦达土壤中所有四个大蒜品种的生长、产量和产量参数都有所提高。然而,从 Wondo Genet 土壤的一揽子建议开始,四个大蒜品种的所有生长和产量参数都逐渐下降。根据这项研究,以(131.25-115-21.25 千克/公顷-1)的比率使用氮磷钾可改善阿瓦达土壤的生长。同样,78.75-69-12.75 千克/公顷的用量在 Wondo Genet 土壤中也是最佳的。总之,确定 NPS 的最佳施用量对提高大蒜产量至关重要。
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引用次数: 0
Limitations of the investor information confirmation form in capturing investor risk propensity. 投资者信息确认表在捕捉投资者风险倾向方面的局限性。
IF 3.4 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-10-29 eCollection Date: 2024-11-15 DOI: 10.1016/j.heliyon.2024.e39923
Jungran Kim, Bonha Koo, Hyoung-Goo Kang

The financial consumer protection laws in South Korea emphasize the principle of suitability to ensure the well-being of the financial consumer. To adhere to these regulations, financial institutions utilize the behavioral risk assessment (BRA) form to assess investors' characteristics. This study evaluates the effectiveness of these forms in capturing investor risk propensities, using Economic Risk Attitude (ERA), Instrumental Risk-Taking (IRT), and Stimulating Risk-Taking (SRT) as comparative benchmarks. Unlike previous research focused mainly on financial risk attitudes, this study introduces a multidimensional approach that includes psychological factors like SRT, offering a more comprehensive understanding of investor behavior. Findings reveal that while BRA assessments correlate with ERA and IRT, they fail to capture the excitement-driven aspects of risk propensity represented by SRT, indicating that BRA forms may inadequately reflect investors' risk profiles. This underscores the need for refining BRA forms by integrating psychological risk factors, advocating for a multidimensional framework that enhances consumer protection and enables more tailored investment strategies. The study contributes actionable insights for financial consumer protection and sets the stage for integrating advanced technologies, such as AI, to further refine risk assessments.

韩国的金融消费者保护法强调适当性原则,以确保金融消费者的福祉。为了遵守这些法规,金融机构利用行为风险评估表(BRA)来评估投资者的特征。本研究以经济风险态度(ERA)、工具性风险承担(IRT)和刺激性风险承担(SRT)为比较基准,评估了这些表格在捕捉投资者风险倾向方面的有效性。与以往主要关注金融风险态度的研究不同,本研究引入了包括 SRT 等心理因素在内的多维方法,从而更全面地了解投资者行为。研究结果表明,虽然 BRA 评估与 ERA 和 IRT 相关,但它们未能捕捉到 SRT 所代表的风险倾向中的兴奋驱动因素,这表明 BRA 表格可能无法充分反映投资者的风险状况。这强调了通过整合心理风险因素来完善 BRA 表格的必要性,倡导建立一个多维框架,以加强对消费者的保护,并制定更有针对性的投资策略。本研究为金融消费者保护提供了可操作的见解,并为整合人工智能等先进技术进一步完善风险评估奠定了基础。
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引用次数: 0
Role of double-negative autoreactive cells (CD4-CD8-) in phosphatidylcholine-mediated rheumatoid arthritis: A Mendelian randomization study. 双阴性自反应细胞(CD4-CD8-)在磷脂酰胆碱介导的类风湿性关节炎中的作用:孟德尔随机化研究
IF 3.4 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-10-29 eCollection Date: 2024-11-15 DOI: 10.1016/j.heliyon.2024.e39946
Huaguo Zhao, Licheng Ni

Objective: Mendelian randomization (MR) was employed to explore the potential causal relationship between liposomes (LP) and rheumatoid arthritis (RA), with a focus on the mediating roles of immune cells (IC).

Methods: By screening public GWAS data, LP were used as exposure data, RA as outcome data, and IC as mediating factors. The Inverse Variance Weighted (IVW) method was the main analytical technique used in this paper to evaluate causal effects. Additional techniques included the MR-Egger, weighted median, weighted mode, and simple mode methods. Cochran's Q and MR-Egger were utilized for heterogeneity and multi-effect analysis.

Results: Phosphatidylcholine was revealed to enhance the risk of RA by MR analysis (P = 0.013, OR = 1.073, 95%CI = 1.015-1.136). There was no strong evidence that RA could affect liposome changes (IVW: P = 0.705, OR = 0.992, 95%CI = 0.952-1.034). The IVW method showed that increased levels of phosphatidylcholine were notably linked to higher levels of Double-Negative Autoreactive Cells (CD4-CD8-, DNAC) (P = 0.006, OR = 1.152, 95%CI = 1.041-1.276). The IVW approach showed that increased levels of DNAC were substantially linked to a higher risk of RA (P = 0.001, OR = 1.105, 95%CI = 1.041-1.173). Of the genetically predicted liposomes mediated by DNAC, 19.2 % were found.

Conclusion: The present work established a causal association between LP and RA, and identified a potential mediating influence of IC. However, the specific mechanism of LP triacyl-glycerol and IC on RA is still unclear, and further research is needed.

目的:采用孟德尔随机法(MR)探讨脂质体(LP)与类风湿性关节炎(RA)之间的潜在因果关系,重点关注免疫细胞(IC)的中介作用:方法:通过筛选公开的 GWAS 数据,将 LP 作为暴露数据,RA 作为结果数据,IC 作为中介因子。本文使用的主要分析技术是反方差加权法(IVW),用于评估因果效应。其他技术包括 MR-Egger、加权中位数、加权模式和简单模式法。Cochran's Q和MR-Egger用于异质性和多效应分析:通过 MR 分析发现,磷脂酰胆碱可增加罹患 RA 的风险(P = 0.013,OR = 1.073,95%CI = 1.015-1.136)。没有强有力的证据表明 RA 会影响脂质体的变化(IVW:P = 0.705,OR = 0.992,95%CI = 0.952-1.034)。IVW 方法显示,磷脂酰胆碱水平的升高与双阴性自反应细胞(CD4-CD8-,DNAC)水平的升高明显相关(P = 0.006,OR = 1.152,95%CI = 1.041-1.276)。IVW方法显示,DNAC水平升高与RA风险升高密切相关(P = 0.001,OR = 1.105,95%CI = 1.041-1.173)。在由 DNAC 介导的基因预测脂质体中,发现了 19.2%:本研究确立了 LP 与 RA 之间的因果关系,并确定了 IC 的潜在中介影响。然而,LP 三酰甘油和 IC 对 RA 的具体影响机制尚不清楚,需要进一步研究。
{"title":"Role of double-negative autoreactive cells (CD4<sup>-</sup>CD8<sup>-</sup>) in phosphatidylcholine-mediated rheumatoid arthritis: A Mendelian randomization study.","authors":"Huaguo Zhao, Licheng Ni","doi":"10.1016/j.heliyon.2024.e39946","DOIUrl":"10.1016/j.heliyon.2024.e39946","url":null,"abstract":"<p><strong>Objective: </strong>Mendelian randomization (MR) was employed to explore the potential causal relationship between liposomes (LP) and rheumatoid arthritis (RA), with a focus on the mediating roles of immune cells (IC).</p><p><strong>Methods: </strong>By screening public GWAS data, LP were used as exposure data, RA as outcome data, and IC as mediating factors. The Inverse Variance Weighted (IVW) method was the main analytical technique used in this paper to evaluate causal effects. Additional techniques included the MR-Egger, weighted median, weighted mode, and simple mode methods. Cochran's Q and MR-Egger were utilized for heterogeneity and multi-effect analysis.</p><p><strong>Results: </strong>Phosphatidylcholine was revealed to enhance the risk of RA by MR analysis (P = 0.013, OR = 1.073, 95%CI = 1.015-1.136). There was no strong evidence that RA could affect liposome changes (IVW: P = 0.705, OR = 0.992, 95%CI = 0.952-1.034). The IVW method showed that increased levels of phosphatidylcholine were notably linked to higher levels of Double-Negative Autoreactive Cells (CD4<sup>-</sup>CD8<sup>-</sup>, DNAC) (P = 0.006, OR = 1.152, 95%CI = 1.041-1.276). The IVW approach showed that increased levels of DNAC were substantially linked to a higher risk of RA (P = 0.001, OR = 1.105, 95%CI = 1.041-1.173). Of the genetically predicted liposomes mediated by DNAC, 19.2 % were found.</p><p><strong>Conclusion: </strong>The present work established a causal association between LP and RA, and identified a potential mediating influence of IC. However, the specific mechanism of LP triacyl-glycerol and IC on RA is still unclear, and further research is needed.</p>","PeriodicalId":12894,"journal":{"name":"Heliyon","volume":"10 21","pages":"e39946"},"PeriodicalIF":3.4,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11570481/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142667859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The economic effects of tax structure transformation: A study based on the tax reform of China's hainan free trade port. 税收结构转型的经济效应:基于中国海南自由贸易港税制改革的研究。
IF 3.4 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-10-29 eCollection Date: 2024-11-15 DOI: 10.1016/j.heliyon.2024.e39915
Zuomin Zhang, Xun Xiao, Chunfeng Liu

Many developing countries use tax reform as a strategy to support national or regional development. China's tax reform of the Hainan Free Trade Port in 2025 serves this purpose. The reform replaces the existing VAT, consumption tax, vehicle purchase tax, urban maintenance and construction tax, and education fee ("four taxes and one fee") with a sales tax. Previous studies of tax structure reform have rarely addressed the economic impact of such a transition, and few sales tax studies have discussed the issue of optimal tax rates. To study the economic effects of the introduction of sales tax and to find the optimal tax rate, this paper uses the computable general equilibrium (CGE) model to conduct simulation analyses. It is found that the sales tax rate should be 17.16 % to keep the fiscal revenue of Hainan Province more or less unchanged after the 'four taxes and one fee' are simplified into sales tax. The total economic volume and sales tax rate show an inverted 'U' type relationship, the optimal sales tax rate is about 9.79 %, and the tax rate of GDP, investment, employment growth of 3.82 %, 0.35 %, 3.41 %, respectively, the manufacturing industry and other industries in most of the different degrees of growth. Therefore, we suggest that the average sales tax rate of Hainan Free Trade Port should be around 9.79 %.

许多发展中国家将税制改革作为支持国家或地区发展的一项战略。中国 2025 年海南自由贸易港的税制改革就符合这一目的。改革以营业税取代了现有的增值税、消费税、车辆购置税、城市维护建设税和教育费("四税一费")。以往对税制结构改革的研究很少涉及这种过渡对经济的影响,对销售税的研究也很少讨论最优税率的问题。为了研究开征销售税的经济影响并找出最优税率,本文使用可计算一般均衡模型(CGE)进行了模拟分析。结果表明,"四税一费 "简并为营业税后,海南省的财政收入基本保持不变,营业税税率应为 17.16%。经济总量与营业税税率呈现倒 "U "型关系,最优营业税税率约为 9.79 %,而税率对 GDP、投资、就业的增长影响分别为 3.82 %、0.35 %、3.41 %,制造业与其他行业相比大多有不同程度的增长。因此,我们建议海南自由贸易港的平均销售税率应在 9.79 %左右。
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引用次数: 0
A scheduling perspective on modular educational systems in Europe. 欧洲模块化教育系统的调度视角。
IF 3.4 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-10-29 eCollection Date: 2024-11-15 DOI: 10.1016/j.heliyon.2024.e39694
Rubén Ruiz-Torrubiano, Sebastian Knopp, Andreas Krystallidis, Lukas Matthias Wolf

In modular educational systems, students are allowed to choose a part of their curriculum themselves. The rationale behind letting students choose their courses themselves is to enhance self-responsibility, improve student motivation, and allow for focus on specific areas of interest. A central instrument for bringing these systems to fruition is the timetable. However, scheduling the timetable in such systems can be an extremely challenging and time-consuming task. In this study, we present a framework for classifying modular educational systems in Europe that reflects different degrees of freedom regarding student choices and explore the consequences from the perspective of scheduling a timetable that satisfies all requirements from the organizational and pedagogical perspectives. For this purpose, we conducted interviews in Austria, Germany, Finland, Switzerland, the Netherlands, and Luxembourg, and applied the framework to these educational systems, finding that among them the Finnish system shows the highest degree of modularity. After analyzing the consequences of modularity from the scheduling perspective, we assess the necessity for automated scheduling methods, which are central to realizing the potential and many benefits of modular education. The framework developed in this paper can be used by educational systems to assess their degree of modularity and consider the right approach to timetabling based on it.

在模块式教育系统中,学生可以自行选择部分课程。让学生自己选择课程的理由是为了增强学生的自我责任感,提高学生的学习积极性,并让学生专注于自己感兴趣的特定领域。实现这些制度的核心工具是课程表。然而,在这类系统中安排课程表可能是一项极具挑战性且耗时的任务。在本研究中,我们提出了一个欧洲模块化教育系统分类框架,该框架反映了学生选择的不同自由度,并从组织和教学的角度探讨了安排满足所有要求的课程表的后果。为此,我们在奥地利、德国、芬兰、瑞士、荷兰和卢森堡进行了访谈,并将该框架应用于这些教育体系,结果发现芬兰教育体系的模块化程度最高。在从时间安排的角度分析了模块化的后果之后,我们评估了自动时间安排方法的必要性,这是实现模块化教育的潜力和诸多益处的核心。教育系统可以利用本文开发的框架来评估其模块化程度,并在此基础上考虑正确的时间安排方法。
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引用次数: 0
Pseudohypoaldosteronism type II and sensory neuropathy associated with a heterozygous pathogenic variant in KLHL3 gene, a case report. 与 KLHL3 基因杂合子致病变体相关的假性低醛固酮症 II 型和感觉神经病,病例报告。
IF 3.4 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-10-29 eCollection Date: 2024-11-15 DOI: 10.1016/j.heliyon.2024.e39891
J B Davion, I Coku, A Wissocq, A Genet, J Poupart, L Defebvre, V Huin

Pseudohypoaldosteronism type II is a rare Mendelian disorder characterized by hypertension, hyperkalemia, hyperchloremia and metabolic acidosis, despite a normal glomerular filtration rate. Four genes (KLHL3, CUL3, WNK1 and WNK4) are associated with this disease. Mutations in the KLHL3 gene cause pseudohypoaldosteronism type II in either an autosomal dominant or a recessive inheritance pattern. Sensory neuropathy has been associated with autosomal recessive mutations in WNK1, but not with KHLH3. We reported a unique three-generation family with dominant pseudohypoaldosteronism type II and sensory neuropathy. Three affected members of the family underwent neurological examination, nerve conduction studies and exome sequencing. A 13-years-old girl had a history of pseudohypoaldosteronism type II, and suffered from neuropathic pain associated with a sensory neuronopathy. Her mother and grandfather have pseudohypoaldosteronism type II associated with an asymptomatic sensory neuropathy on nerve conduction studies. Exome sequencing revealed in all affected members two missenses at heterozygous state, one pathogenic variant in KLHL3, which may be responsible for the sensory neuropathy. This is the first description of neurological features associated with KLHL3 mutation. Our study expands the genotype-phenotype spectrum of KLHL3 with the addition of sensory neuronopathy.

假性高醛固酮增多症 II 型是一种罕见的孟德尔疾病,尽管肾小球滤过率正常,但却以高血压、高钾血症、高胆碱血症和代谢性酸中毒为特征。该病与四个基因(KLHL3、CUL3、WNK1 和 WNK4)有关。KLHL3 基因突变导致假性肾上腺醛固酮增多症 II 型,为常染色体显性或隐性遗传模式。感觉神经病与 WNK1 的常染色体隐性突变有关,但与 KHLH3 无关。我们报告了一个三代同堂的独特家族,该家族患有显性假性肾上腺醛固酮增多症 II 型和感觉神经病变。家族中三名患者接受了神经系统检查、神经传导研究和外显子组测序。一名13岁的女孩患有假性肾上腺醛固酮增多症II型,并伴有感觉神经病变引起的神经性疼痛。她的母亲和祖父都患有假性肾上腺醛固酮增多症 II 型,并在神经传导检查中发现无症状的感觉神经病变。外显子组测序发现,所有受影响的成员中都有两个杂合状态的错义,其中一个是 KLHL3 的致病变体,这可能是导致感觉神经病的原因。这是首次描述与KLHL3基因突变相关的神经系统特征。我们的研究扩展了KLHL3的基因型-表型谱,增加了感觉神经病。
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引用次数: 0
Utilizing machine learning algorithms for task allocation in distributed agile software development. 在分布式敏捷软件开发中利用机器学习算法进行任务分配。
IF 3.4 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-10-29 eCollection Date: 2024-11-15 DOI: 10.1016/j.heliyon.2024.e39926
Dimah Al-Fraihat, Yousef Sharrab, Abdel-Rahman Al-Ghuwairi, Hamza Alzabut, Malik Beshara, Abdulmohsen Algarni

Distributed agile software development (DASD) has become a prominent software development approach. Proper task allocation is crucial in DASD to avoid undesirable outcomes including project rejection by clients, unfavorable team attitudes, and project failure. Coordination and communication issues occur as businesses embrace the DASD environment more frequently to tap into global talent and knowledge while cutting development expenses. To overcome these challenges, efficient task allocation planning becomes a crucial success component in software project management. The purpose of this study is to utilize machine learning (ML) predictive algorithms to determine the most appropriate role for a given task, with the aim of assisting software managers in making task assignments more efficiently and effectively in DASD environment. Preprocessing steps applied to the dataset include data cleaning, normalization, and partitioning into training, validation, and test sets. Four model classifiers were used in the experiment: Random Forest, Decision Tree, K-Nearest Neighbors (K-NN), and AdaBoost. The results showed that Random Forest outperformed the other classifiers in task allocation prediction, achieving an accuracy of 96.7 %, followed by K-NN (94.2 %), Decision Tree (93.5 %), and AdaBoost (93 %). The study demonstrates that ML models are effective in tackling task allocation issues in DASD settings, and the outcomes are promising.

分布式敏捷软件开发(DASD)已成为一种重要的软件开发方法。在 DASD 中,适当的任务分配对于避免不良后果(包括项目被客户拒绝、团队态度不佳和项目失败)至关重要。随着企业越来越多地采用 DASD 环境,以利用全球人才和知识,同时削减开发成本,协调和沟通问题也随之而来。为了克服这些挑战,高效的任务分配计划成为软件项目管理成功的关键要素。本研究的目的是利用机器学习(ML)预测算法来确定给定任务的最合适角色,从而帮助软件经理在 DASD 环境中更高效、更有效地分配任务。数据集的预处理步骤包括数据清理、归一化以及将数据划分为训练集、验证集和测试集。实验中使用了四种模型分类器:随机森林、决策树、K-近邻(K-NN)和 AdaBoost。结果显示,随机森林在任务分配预测方面的表现优于其他分类器,准确率达到 96.7%,其次是 K-NN(94.2%)、决策树(93.5%)和 AdaBoost(93%)。这项研究表明,ML 模型能有效解决 DASD 环境中的任务分配问题,其结果也很有希望。
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引用次数: 0
Analyzing risk contagion and volatility spillover across multi-market capital flow using EVT theory and C-vine Copula. 利用 EVT 理论和 C-vine Copula 分析多市场资本流动的风险传染和波动溢出。
IF 3.4 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-10-29 eCollection Date: 2024-11-15 DOI: 10.1016/j.heliyon.2024.e39918
Fahim Afzal, Haiying Pan, Farman Afzal, Rana Faizan Gul

There exists a potential interdependence among the United States markets, alongside an exceptional dependence on the East Asian stock markets. This transmission of risks is similarly evident in funds that are traded within markets. The current study seeks to uncover the pathways of risk contagion among various financial markets. This study examines how risks of funds spread across borders among China, the United States, and East Asia using Extreme Value Theory (EVT) and C vine copula quantile regression. It uses models such as AR (1), EGARCH (1, 1), Peak over Threshold (POT), and Copula methods to predict volatility events and correlation patterns during times of high volatility versus regular periods. Notably, the United States exhibits a risk transmission effect on the East Asian market compared to China. Furthermore, the findings indicate that, in times of high volatility, the risk spillover effect is comparatively weak, which is contrary to the situation of the US market. The study suggests that China's financial impact could progressively rise due to initiatives aimed at sector integration and enhancing financial independence. These findings have enlightening consequences for macro-prudential regulatory agencies, emphasizing the necessity of effective regulation to address cross-border risk spillovers. International investors can benefit from these results by incorporating risk-hedging strategies, accurately evaluating derivatives, and making wise investment decisions.

美国市场之间存在着潜在的相互依存关系,同时对东亚股票市场也存在着特殊的依赖性。这种风险传染在市场内交易的基金中同样明显。本研究试图揭示不同金融市场之间风险传染的途径。本研究利用极值理论(EVT)和 C vine copula 量子回归法研究了基金风险如何在中国、美国和东亚之间跨境传播。研究使用了 AR (1)、EGARCH (1,1)、Peak over Threshold (POT) 和 Copula 等模型来预测高波动期与正常波动期的波动事件和相关模式。值得注意的是,与中国相比,美国对东亚市场表现出风险传导效应。此外,研究结果表明,在高波动率时期,风险溢出效应相对较弱,这与美国市场的情况相反。研究表明,中国的金融影响力可能会因行业整合和增强金融独立性的举措而逐步上升。这些研究结果对宏观审慎监管机构具有启发意义,强调了有效监管以应对跨境风险溢出的必要性。国际投资者可以从这些结果中获益,纳入风险对冲策略,准确评估衍生工具,做出明智的投资决策。
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