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Hom-李超三系的(θ,φ)-导子和Jordan(θ,φ)-导子 认领 引用
1
作者 曹燕 徐雪琪 《哈尔滨理工大学学报》 CAS 北大核心 2026年第3期127-135,共9页
主要研究了Hom-李超三系的(广义)(θ,φ)-导子和(广义)Jordan(θ,φ)-导子。首先,给出了Hom-李超三系的(广义)(θ,φ)-导子和(广义)Jordan(θ,φ)-导子的定义。然后,证明了Hom-李超三系的(广义)Jordan(θ,φ)-导子是(广义)(θ,φ)-导子... 主要研究了Hom-李超三系的(广义)(θ,φ)-导子和(广义)Jordan(θ,φ)-导子。首先,给出了Hom-李超三系的(广义)(θ,φ)-导子和(广义)Jordan(θ,φ)-导子的定义。然后,证明了Hom-李超三系的(广义)Jordan(θ,φ)-导子是(广义)(θ,φ)-导子的充分条件,以及Hom-李超三系的(广义)Jordanθ-导子就是(广义)θ-导子。 展开更多
关键词 Hom-李超三系 (θ,φ)-导子 Jordan(θ,φ)-导子 广义(θ,φ)-导子 广义Jordan(θ,φ)-导子
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形式三角矩阵半环上高阶Jordan导子的刻画 认领 引用
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作者 庄金洪 陈艳平 谭宜家 《哈尔滨师范大学自然科学学报》 CAS 2026年第4期17-24,共8页
研究了形式三角矩阵半环T=Tri(R,M,S)上高阶Jordan导子的结构.通过刻画其代数性质,首先建立了此类映射的一般形式:当R与S为2-非挠加法可消半环时,T上的任意高阶Jordan导子族D={Δn|n∈N}均可由半环R、S上的高阶Jordan导子与双半模M... 研究了形式三角矩阵半环T=Tri(R,M,S)上高阶Jordan导子的结构.通过刻画其代数性质,首先建立了此类映射的一般形式:当R与S为2-非挠加法可消半环时,T上的任意高阶Jordan导子族D={Δn|n∈N}均可由半环R、S上的高阶Jordan导子与双半模M上一族特定可加映射完全确定.进而,证明了当T是2-非挠的加法可消半环且M是忠实双半模时,T上的每一个高阶Jordan导子必然是一个高阶导子. 展开更多
关键词 形式三角矩阵半环 高阶导子 高阶Jordan导子
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Epidemiological and clinical features of cutaneous leishmaniasis cases in Jordan from 2013 to 2024 认领 引用
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作者 Sudi Maiteh Esra'a Al-zoubi +3 位作者 Mira Al Qousi Yousef Khader Firas Qarqaz Khaldon Bodoor 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2026年第6期262-271,共10页
Objective:To investigate the epidemiology,demographic risk factors,spatial distribution,and temporal trends of cutaneous leishmaniasis(CL)in Jordan from 2013 to 2024.Methods:A retrospective epidemiological study was p... Objective:To investigate the epidemiology,demographic risk factors,spatial distribution,and temporal trends of cutaneous leishmaniasis(CL)in Jordan from 2013 to 2024.Methods:A retrospective epidemiological study was performed utilizing confirmed CL cases from the Jordanian Ministry of Health.Demographic(age,sex,age group),clinical(lesion location,year and month),and geographic information(district type)were analyzed using GraphPad Prism 9 software.Spearman’s rank correlation and Chi-square test were used to explore the association between age and lesion locations.Results:Between 2013 and 2024,a total of 1281 confirmed cases were documented.Males represented 63.0%of the cases,while rural areas accounted for 80.6%of the burden.The age groups of 6-18 and 19-60 years accounted for the highest overall CL burden.Lesions were primarily found on the head and neck in children(0-18 years)and on limbs in adults(19-60 years).Persistent hotspots were identified in the Azraq district and the Jordan Valley.Seasonal peaks were noted in late autumn and winter,aligning with the sandfly transmission cycle.Significant association was found between younger age and head and neck lesion counts(r=-0.127,P<0.001),while older patients exhibited a greater involvement of limb lesion counts(for upper limbs lesion counts,r=0.134,P<0.001;for lower limbs lesion counts:r=0.066,P=0.019).Pairwise comparisons also indicated significant differences in lesion locations among different age groups(most P<0.01).Conclusions:CL continues to pose a significant health threat in Jordan,especially in rural and refugee-affected areas.Factors such as underreporting,passive surveillance,and ecological risks contribute to ongoing transmission.A comprehensive national control strategy that includes molecular diagnostics,vector control,refugee health screening,and enhanced surveillance is required for better management of the disease. 展开更多
关键词 Cutaneous leishmaniasis Jordan Epidemiology
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Prevalence and sociodemographic predictors of bullying among university students in Jordan:a cross-sectional study 认领 引用
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作者 Majd Alebeah Mohammad Suliman +5 位作者 Asem Abdalrahim Abdullah Alkhawaldeh MeanAljezawi Mohammed ALBashtawy Jamal Qaddumi Wesam Taher Almagharbeh 《Frontiers of Nursing》 2026年第1期139-146,共8页
Objective:To determine the prevalence of bullying among university students in Jordan.The study also aims to identify potential predictors of bullying within the context of university students in Jordan.Methods:A cros... Objective:To determine the prevalence of bullying among university students in Jordan.The study also aims to identify potential predictors of bullying within the context of university students in Jordan.Methods:A cross-sectional study using a convenience sampling method was conducted with 350 university students from 3 institutions(2 public and 1 private),who par ticipated in this study.Data were collected through a self-repor ted questionnaire.Data analysis employed descriptive statistics,and multivariate linear regression was executed through the SPSS program(version 26)(IBM Corporation,Armonk,New York,United States)at 5% level of significance.Results:The findings revealed that 30% of the surveyed students reported never experiencing bullying,41.1% indicated rare exposure,20% reported occasional bullying,4.3% noted frequent exposure,and 4.6% reported constant exposure.Statistical analysis identified university and academic year as significant predictors of bullying.The university exhibited significance(B=-0.403,P≤0.05),while the academic year was also a significant predictor(B=0.213,P≤0.05).Conclusions:Given the prevalence and predictors identified,this study recommends the implementation of policies in universities to safeguard students from bullying.These policies should specifically target the most affected individuals. 展开更多
关键词 bullying bullying prevalence Jordan sociodemographic predictors university students
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The Relationship Between Missed Nursing Care and Nursing Teamwork in Jordan 认领 引用
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作者 Muna Salahat Ali Saleh 《Health Care Science》 CSCD 2026年第1期58-73,共16页
Background:The effective delivery of nursing care is crucial in hospital settings because it directly affects patient outcomes.However,nursing care can be missed because of various factors,including inadequate teamwor... Background:The effective delivery of nursing care is crucial in hospital settings because it directly affects patient outcomes.However,nursing care can be missed because of various factors,including inadequate teamwork among nursing staff.Understanding the interplay between missed nursing care and nursing teamwork is essential for enhancing care quality in inpatient settings.This study therefore explored the relationship between missed nursing care and nursing teamwork among registered nurses in hospital inpatient units.Methods:A descriptive,correlational,cross-sectional study was conducted,involving 375 registered nurses from four hospitals in three healthcare sectors in Jordan.Missed nursing care and nursing teamwork were measured using the Missed Nursing Care Survey and the Nursing Teamwork Survey.Data collection occurred between September and October 2024,with con-venience sampling used for participant recruitment.Descriptive and inferential statistics,including mean,standard deviation,percentage,frequency,and Pearson's r correlation coefficient,were used to analyze the data.Results:The overall average missed nursing care score was 2.35 out of 5,suggesting that nursing care is rarely missed.The most frequently missed care activities reported by registered nurses included attending interdisciplinary care conferences,providing mouth care,and ambulating patients three times daily or as ordered.Activities least often missed included medi-cation administration within 30 min of the scheduled time,assessing vital signs as ordered,and performing patient assessments each shift.The overall mean score for nursing teamwork was 3.5 out of 5(standard deviation=1.06).There was a moderate but significant negative correlation between missed nursing care and nursing teamwork(r=−0.310,p<0.001).Conclusions:The results underscore the urgent need for targeted interventions to enhance resource allocation and teamwork,ultimately reducing missed nursing care and improving patient outcomes.Addressing these areas will foster a more effective healthcare system and enable nursing professionals to consistently deliver high-quality care. 展开更多
关键词 Jordan missed nursing care nursing teamwork teamwork
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Inadequate glycemic control among patients with type 2 diabetes in Jordan:prevalence and associated factors 认领 引用
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作者 Abeer Amin Mohammad Jafar Alshraideh +1 位作者 Mohammed Ibrahim Yacoub Mohammad A.Abu Sabra 《Frontiers of Nursing》 2026年第1期131-138,共8页
Background:Diabetes mellitus(DM)is a chronic illness with potentially fatal and debilitating consequences.Problems with glycemic management are a major issue that adds an added strain to public health services.Objecti... Background:Diabetes mellitus(DM)is a chronic illness with potentially fatal and debilitating consequences.Problems with glycemic management are a major issue that adds an added strain to public health services.Objectives:The purpose of this study is to evaluate the prevalence of poor glycemic control and its related variables among type 2 diabetes mellitus(T2DM)patients in southern Jordan.Methods:A cross-sectional study was carried out in the Prince Hashem bin Abdullah II Hospital in Jordan's southernmost province.For the period April–July 2024,516 individuals with T2D were enrolled.A structured questionnaire that had been pre-prepared was used to collect data.As an index of glycemic control,a glycated hemoglobin(Hb A1c)7%cut-off point was adopted.Results:Poor glycemic control was prevalent in 81.0%of T2DM individuals.Inadequate glycemic control was significantly worse in non-married patients and those with 10 or more years of diabetes duration,insulin treatment,dyslipidemia,neuropathy,cardiovascular illness,and glomerular filtration rate(GFR=60 m L/min;[P<0.05]).Moreover,dyslipidemia and insulin administration increased the likelihood of poor glycemic control(odds ratio[OR]:2 and 5,respectively)(P<0.05).Conclusions:Inadequate glycemic control was common among the current study par ticipants.To prevent disease consequences and enhance the health of patients with diabetes,health care professionals should pay special attention to related risk factors such as dyslipidemia,neuropathy,cardiovascular disease(CVD),extended illness duration,and insulin usage. 展开更多
关键词 diabetes management glycemic control Jordan type 2 diabetes
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基于Born-Jordan核的时频域电缆缺陷定位方法 认领 引用
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作者 何志斌 王瑞鹏 +1 位作者 刘杨博 黄松岭 《中国测试》 CAS 北大核心 2026年第7期161-166,共6页
【目的】长距离电力电缆的无损检测主要包括时域反射法、频域反射法、时频域反射法,分别存在波头识别困难、衰减严重、信号时频谱集中度低的问题。为提高时频域反射法检测信号能量集中程度的同时兼顾交叉项抑制能力,提出一种应用Born-Jo... 【目的】长距离电力电缆的无损检测主要包括时域反射法、频域反射法、时频域反射法,分别存在波头识别困难、衰减严重、信号时频谱集中度低的问题。为提高时频域反射法检测信号能量集中程度的同时兼顾交叉项抑制能力,提出一种应用Born-Jordan核函数的时频域电缆缺陷定位方法。【方法】首先构造具有紧的时间与频率支撑性质的BJ核函数,然后利用Cohen类时频分布求解回波信号时频域特征,最后应用时频互相关函数得到缺陷位置信息。仿真和实验证明所提方法的有效性。【结果】搭建10 kV频率依赖电缆模型,并在全长98.18 m电缆距离信号注入点30.00 m处制造人工缺陷,利用所提出方法进行检测,定位相对误差达0.32%。【结论】因此,该方法相对已有方法获得了较好的定位效果。 展开更多
关键词 电缆检测 时频域反射法 Born-Jordan核函数
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从Roth消去法则到Jordan标准形 认领 引用
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作者 李昊状 刘合国 +2 位作者 韦文博 周少玲 徐涛 《理论数学》 2026年第2期185-193,共9页
本文从Roth消去法则出发,给出了Jordan标准形定理的一个纯矩阵证明。
关键词 Roth消去法则 Jordan标准形 幂零矩阵
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Jordan代数的三种理想的性质 认领 引用
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作者 姚晨蕊 李娟 《西北师范大学学报（自然科学版）》 CAS 2026年第1期108-114,共7页
研究有限维Jordan代数可解和幂零的充分条件、必要条件和充要条件.通过引入三种新的理想,即完美理想、几乎完美理想和上边界理想,得到了有限维Jordan代数可解和幂零的充分条件和必要条件;证明了有限维Jordan代数的极大完美理想和极大几... 研究有限维Jordan代数可解和幂零的充分条件、必要条件和充要条件.通过引入三种新的理想,即完美理想、几乎完美理想和上边界理想,得到了有限维Jordan代数可解和幂零的充分条件和必要条件;证明了有限维Jordan代数的极大完美理想和极大几乎完美理想存在且唯一,分别称之为完美根基和几乎完美根基,并且有限维Jordan代数可解的必要条件是其完美根基为零;有限维Jordan代数幂零的充要条件是其几乎完美根基为零.此外,证明了有限维Jordan代数的极小上边界理想存在且唯一,并且幂零的Jordan代数有且仅有一个上边界理想,就是它自己. 展开更多
关键词 Jordan代数 理想 可解 幂零 商 完美根基
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Lived experiences of Jordanian mothers of children with cancer:A descriptive qualitative study 认领 引用
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作者 Maha Atout Rasmieh Al-Amer +1 位作者 Abd Alhadi Hasan Rabia Allari 《World Journal of Clinical Pediatrics》 2026年第2期261-270,共10页
BACKGROUND Caring for children with cancer deeply affects mothers'daily lives,emotions,and family roles;however,to date,little has been learned about these experiences in the context of Jordan.AIM To examine the l... BACKGROUND Caring for children with cancer deeply affects mothers'daily lives,emotions,and family roles;however,to date,little has been learned about these experiences in the context of Jordan.AIM To examine the lived experiences of Jordanian mothers of children with cancer,with a focus on their coping mechanisms,support systems,and challenges.METHODS This descriptive qualitative study involved the use of semi-structured interviews with 20 mothers of children visiting a pediatric hospital in Jordan.Thematic analysis was employed,guided by the transactional model of stress and coping and the theory of spiritual coping,to analyze the resulting data.RESULTS Three major themes were revealed.The idea of a transformative coping journey included several subthemes,namely shifting priorities,holding back tears to appear strong,learning important lessons,and reconstructing futures while delaying personal dreams.The second emergent theme,perceived challenges,included subthemes around the emotional irritability of the sick child;the impact on family life and daily routines;and preparation of the home environment for children after recovery.Finally,the theme of support systems included subthemes regarding emotional and practical support from extended family and the use of mothers'deep beliefs in destiny and God's will as key sources of strength and endurance.CONCLUSION Developing a broad range of support services in the Jordanian context to assist parents whose children have been diagnosed with cancer is essential.Possible focuses for such programs could include the provision of counselling services,support groups,and educational resources to help parents more effectively manage stress,thereby enhancing their emotional well-being. 展开更多
关键词 Lived experience Mothers Cancer Jordan Descriptive qualitative study Pediatric cancers
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Integrated Hydro-Economic Analysis of Water Resource Sustainability in Jordan:Systemic Trade-Offs and Institutional Constraints in the Jordan Valley 认领 引用
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作者 Rasha Ahmed Al-Rkebat 《Open Journal of Modern Hydrology》 CAS 2026年第1期99-115,共17页
This research moves beyond conventional water accounting to provide a systemic diagnostic framework for the Jordan Valley,identifying the“Structural Misalignment”between economic incentives and resource sustainabili... This research moves beyond conventional water accounting to provide a systemic diagnostic framework for the Jordan Valley,identifying the“Structural Misalignment”between economic incentives and resource sustainability.The primary contribution of this study is the development and validation of a Decision Support System(DSS)powered by two novel composite indices:the Nexus Efficiency Index(NEI)and the Composite Operational Deficit(OD).Unlike traditional reports,this analysis uncovers a critical“Governance Gap”driven by a price-incentive decoupling:a 5.7%agricultural inflation(APPI)occurring simultaneously with a 0.69%national deflation(PPI)in late 2025.By quantifying this divergence,the study provides empirical evidence of Jevons’Paradox in the Jordan Valley,where technical efficiencies(82%billing)are systematically eroded by the near-zero marginal cost of independent solarpowered pumping.The research’s strategic breakthrough lies in its“Policy Localization”roadmap,designed to mitigate the 83%reduction in international technical support(USAID).Through the integration of Predictive AI(SVM)and Satellite-based Monitoring(IPADT),the study demonstrates how“Focus Metering”can capture 80%of management benefits with minimal infrastructure investment.This work transforms the Water-Energy-Food-Environment(WEFE)Nexus from a theoretical concept into an actionable,digital governance lever,providing a blueprint for achieving systemic resilience and safeguarding Jordan’s“Hydrological Commons”amidst the global energy and fiscal shifts of 2026. 展开更多
关键词 Hydro-Economic Analysis(HEA) WEFE Nexus Wicked Problem System Resilience Jevons’Paradox Nexus Efficiency Index(NEI) Operational Deficit(OD) Jordan Valley
From Yanyuan Campus to Jordanian Olive Groves:Finding Practical Solutions for Development 认领 引用
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作者 RAED ALI MOHAMAD ABDALQADER 《China Today》 2026年第6期36-39,共4页
By implementing agricultural techniques and technologies learned in China,a man in Jordan has greatly increased olive tree productivity.IT is November in northern Jordan.Sunlight filters through the curled,dry leaves ... By implementing agricultural techniques and technologies learned in China,a man in Jordan has greatly increased olive tree productivity.IT is November in northern Jordan.Sunlight filters through the curled,dry leaves of olive trees,casting dappled shadows on the local cracked earth.Ancient trunks bear centuries of rough texture,yet only sparse,shrunken olives hang from the branches,silent evidence of a drought more severe than any in recent memory.Villages across the region are paralyzed by water shortages.Harvests are expected to drop sharply,and for families who depend on these trees,another difficult year lies ahead. 展开更多
关键词 technologies olive tree productivity harvests agricultural techniques water shortages family dependence northern jordan implementing agricultural techniques technologies
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Geothermal Energy in Jordan:Public Perception and Expert Insights from a National Survey 认领 引用
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作者 Rashed Amireh Khaled Tarawneh +1 位作者 Feras Fraige Awwad Titi 《Journal of Geoscience and Environment Protection》 2026年第1期311-336,共26页
Jordan possesses considerable geothermal resources,predominantly within the low-enthalpy range(generally below 100˚C),which are well suited for directuse applications such as space heating,greenhouse agriculture,aquac... Jordan possesses considerable geothermal resources,predominantly within the low-enthalpy range(generally below 100˚C),which are well suited for directuse applications such as space heating,greenhouse agriculture,aquaculture,and balneological activities rather than large-scale electricity generation.These resources occur mainly as hot springs and geothermal wells distributed across several geothermal fields,with temperatures ranging from approximately 27˚C to 70˚C.Despite this potential,geothermal energy remains largely underutilized within Jordan’s national energy mix.This study investigates public perception and expert perspectives on geothermal energy as a pathway toward sustainable development in Jordan.A national survey involving 418 respondents was conducted to assess public awareness,acceptance,and willingness to adopt geothermal and other renewable energy technologies.The results indicate strong public interest in renewable energy utilization,although economic constraints,limited infrastructure,and insufficient institutional support remain key barriers.Complementary interviews with renewable energy experts confirm Jordan’s substantial geothermal potential while emphasizing the need for enhanced community awareness,supportive policy frameworks,and targeted investment.The findings highlight geothermal energy as a viable and sustainable solution for addressing Jordan’s energy challenges,particularly in reducing energy costs,supporting sustainable agriculture,and improving energy security.To fully realize these benefits,strategic measures are required,including regulatory modernization,investment incentives,stakeholder collaboration,and public outreach initiatives.Overall,geothermal energy emerges as an economically feasible and environmentally sustainable component of Jordan’s long-term energy transition strategy. 展开更多
关键词 Geothermal Energy Sustainable Development Public Perception Expert Insights Renewable Energy Policy Jordan
基于模糊推理和Jordan神经网络的磁悬浮球位置补偿控制研究 认领 引用
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作者 李孝茹 陈士松 黄之文 《上海理工大学学报》 CAS 北大核心 2025年第3期299-308,共10页
针对欠训练Jordan神经网络(Jordan neural network,JNN)输出不确定性导致的控制系统动态性能不佳的问题,提出了一种基于模糊推理(fuzzy inference,FI)和JNN的磁悬浮球位置补偿控制新方法,构建了包含基础控制、JNN控制和FI的三模块控制... 针对欠训练Jordan神经网络(Jordan neural network,JNN)输出不确定性导致的控制系统动态性能不佳的问题,提出了一种基于模糊推理(fuzzy inference,FI)和JNN的磁悬浮球位置补偿控制新方法,构建了包含基础控制、JNN控制和FI的三模块控制框架。基础控制模块采用适应性强的PID控制器;JNN控制模块实现磁悬浮球系统的在线辨识与补偿;FI模块动态调整神经网络控制器的输出,以抑制欠训练JNN带来的不确定性影响。实验结果表明,与传统神经网络补偿控制方法相比,在跟踪阶跃信号和方波信号时,超调量分别减小了39.79%和60.61%,调节时间分别减小了19.52%和48.47%。该方法在保证稳态精度的同时,显著提升了控制系统的动态性能。 展开更多
关键词 模糊推理 Jordan神经网络 位置补偿控制 磁悬浮球
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Jordan Triple Derivations on *-type Trivial Extension Algebras 认领 引用
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作者 FEI Xiuhai ZHANG Haifang 《数学进展》 CSCD 北大核心 2025年第3期489-500,共12页
In this paper,we investigate the problem of describing the form of Jordan triple derivations on trivial extension algebras.We show that every Jordan triple derivation on a 2-torsion free *-type trivial extension algeb... In this paper,we investigate the problem of describing the form of Jordan triple derivations on trivial extension algebras.We show that every Jordan triple derivation on a 2-torsion free *-type trivial extension algebra is a sum of a derivation and an antiderivation.As its applications,Jordan triple derivations on triangular algebras are characterized. 展开更多
关键词 Jordan triple derivation Jordan derivation derivation antiderivation
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Tackling antimicrobial resistance in the food chain under the One Health umbrella:a systems thinking approach with a focus on Jordan 认领 引用
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作者 Ala'a B.Al-Tammemi Salam Momani +2 位作者 Hanan Hasan Amal Obeidat Muna Horabi 《Science in One Health》 2025年第1期300-309,共10页
Antimicrobial resistance(AMR)has emerged as a critical public health threat and one of the most complicated global challenges due to its multi-faceted nature.In addition to health burden,AMR also drives up healthcare ... Antimicrobial resistance(AMR)has emerged as a critical public health threat and one of the most complicated global challenges due to its multi-faceted nature.In addition to health burden,AMR also drives up healthcare costs and imposes substantial indirect economic impacts.Despite the ongoing global efforts,the burden of drugresistant infections is still growing and alarming.Although AMR has been well addressed pertaining to human health,AMR linked to pathogens in other pillars of the food chain has been a hidden menace and a growing public health concern.AMR may arise in the food chain through various pathways,with foodborne drug-resistant pathogens being reported in the literature.Tackling and combatting AMR in the food chain requires a multifaceted comprehensive approach under the One Health umbrella.This approach is crucial not only to protect public health but also to ensure the sustainability and safety of all components of the food chain. 展开更多
关键词 Antimicrobial resistance Food chain One Health Jordan Eastern Mediterranean Region
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Spatial trends of extreme temperature events and climate change indicators in climate zones of Jordan 认领 引用
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作者 Abdelaziz Q BASHABSHEH Kamel K ALZBOON Zeyad ALSHBOUL 《Journal of Arid Land》 SCIE CSCD 2025年第11期1542-1557,共16页
Extreme temperature events have intensified across Jordan over the past 40 a,increasing risks to agriculture,water availability,urban infrastructure,and public health.The purpose of this study is to assess the long-te... Extreme temperature events have intensified across Jordan over the past 40 a,increasing risks to agriculture,water availability,urban infrastructure,and public health.The purpose of this study is to assess the long-term spatial trends and regime shifts in extreme temperature indicators across Jordan's climate zones to explore climate adaptation strategies.This study presents a high-resolution and spatially explicit assessment of thermal extremes using daily data from 1982 to 2024 across 45 grid-based study points in Jordan.Thirteen temperature indices,including percentile-based thresholds,duration metrics,and absolute extremes,were computed using RClimDex and analyzed across four Köppen climate zones:hot desert(BWh),hot semi-arid(BSh),cold desert(BWk),and Mediterranean(Csa)climates.The analysis confirmed a statistically significant warming trend:annual mean maximum temperatures increased by 2.198°C,while annual mean minimum temperatures rose by 2.035°C.Cold extremes have sharply declined,with cold days(TX10p)decreasing by 70.0%–80.0%,and the cold spell duration indicator(CSDI)dropping from 12.6 to 4.0 d/a,particularly in the BWk zone.Heat indices intensified across all zones,with warm days(TX90p)increasing by over 300.0%in BWh,warm nights(TN90p)rising by 38.1%,and the warm spell duration indicator(WSDI)extending fourfold,indicating prolonged exposure to heatwaves.Mean value of maximum temperature(TXx)reached 45.600°C in most arid areas,while minimum temperature(TNx)exceeded 31.600°C,highlighting increased nocturnal heat stress.Change-point analysis indicated that 1998 was a pivotal year,marking a structural transition in both cold and warm temperature indices.Subsequent intensifications after 2010 in TN90p,TNx,and mean of daily maximum temperature(Tmaxmean)reflected an ongoing trend toward sustained thermal extremes.In addition to time-series trends,the study employed network-based correlation analysis to explore the coherence among climate indices.Strong positive correlations were observed among TXx,TX90p,and mean of daily minimum temperature(Tminmean)(r≥0.94),as well as among TN90p,Tminmean,and TNx(r≥0.87),indicating a tightly clustered heat subsystem.Duration metrics like the WSDI showed a close alignment with percentile extremes(between WSDI and TX90p;r=0.88),suggesting integrated heatwave behavior.In contrast,cold indices(TX10p,TN90p,frost days,and CSDI)exhibited weak or negative correlations and displayed peripheral positioning in the climate network,indicating their limited role under a warming regime.Absolute extremes showed weak internal linkages,suggesting episodic rather than systemic response characteristics.This structural realignment indicated a shift from a previously balanced thermal profile to a heat-dominated climate system.Regional variations revealed that BWh and BSh were experiencing the steepest warming,while Csa was transitioning more slowly but was showing signs of reduced winter cooling and increased irrigation demands.The findings establish a robust climate baseline for Jordan and offer actionable insights for climate adaptation planning.Recommended measures include precision irrigation,the development of heat-resilient crops,improvements to urban cooling infrastructure,and early warning systems for thermal extremes.By integrating spatial climate zoning,regime shift analysis,and inter-index correlation structures,this study provides a replicable framework for monitoring climatic transformations and informing resilience strategies in arid and semi-arid areas. 展开更多
关键词 climate change extreme events arid area temperature trends weather shift Köppen climate classification Jordan
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自伴算子的Jordan代数上的双Jordan导子 认领 引用 被引量：1
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作者 纪培胜 綦伟青 侯恩冉 《青岛大学学报（自然科学版）》 CAS 2009年第3期1-3,42,共3页
设H是一个复Hilbert空间,B(H)s是H上的由自伴算子构成的一个Jordan代数.双线性映射d:B(H)s×B(H)s→B(H)s是B(H)s上的双Jordan导子当且仅当存在虚数λ使得任给a,b∈B(H)s都有d(a,b)=λ(ab-ba).双线性映射d:B(Hs)×B(H)s→B(H)s... 设H是一个复Hilbert空间,B(H)s是H上的由自伴算子构成的一个Jordan代数.双线性映射d:B(H)s×B(H)s→B(H)s是B(H)s上的双Jordan导子当且仅当存在虚数λ使得任给a,b∈B(H)s都有d(a,b)=λ(ab-ba).双线性映射d:B(Hs)×B(H)s→B(H)s是B(H)s上的双广义Jordan导子当且仅当在H上存在有界线性算子x使得任给a,b∈B(H)s都有d(a,b)=axb+bx*a. 展开更多
关键词 Jordan代数 双Jordan导子 双广义Jordan导子
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Steroid response and outcomes in childhood nephrotic syndrome:A multicenter,cross-sectional study from Jordan 认领 引用
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作者 Salma A Ajarmeh Kamal Akl +1 位作者 Muna Al Shawabkeh Jumana Al Baramki 《World Journal of Clinical Pediatrics》 2025年第4期295-303,共9页
BACKGROUND Childhood nephrotic syndrome(NS)outcomes vary widely based on steroid responsiveness and complications.AIM To evaluate steroid response,outcomes,and the use of steroid-sparing medications in children with n... BACKGROUND Childhood nephrotic syndrome(NS)outcomes vary widely based on steroid responsiveness and complications.AIM To evaluate steroid response,outcomes,and the use of steroid-sparing medications in children with nephrotic syndrome in Jordan.METHODS This retrospective study evaluated the demographics and outcomes of 122 children aged 1-18 years with NS between 2011 and 2021 across three centers in Jordan.The outcomes assessed included steroid sensitivity rates,dependence,frequent relapses,complications[chronic kidney disease(CKD),end-stage kidney disease(ESKD)],infections,and need for steroid-sparing treatment.RESULTS Of 64%were boys;median age of disease onset was 4 years.Steroid-sensitive and steroid-resistant NS(SRNS)were observed in 81.1%and 18.9%of patients,respectively;28.7%and 9%had steroid-dependent and frequently relapsing NS,respectively.Kidney biopsies were conducted in 46.7%,the most common finding was minimal change disease in 56.1%;82.6%of biopsied SRNS cases showed focal segmental glomerulosclerosis.The median time to first relapse was 9 months.41.8%of patients required steroidsparing medications,with cyclosporine and mycophenolate mofetil being the most frequently used.Despite these treatments,relapse occurred in 11.5%of cases.Infections,primarily urinary tract infections,affected 24.6%of patients,7.4%progressed to high-grade CKD,and 6.6%required dialysis.SRNS was significantly associated with hematuria,hypertension,and ESKD.CONCLUSION Most patients were steroid sensitive,with minimal change being the most common.Focal segmental glomerulosclerosis was the predominant histopathology in the steroid-resistant cases.SRNS patients had worse outcomes,with more infections,CKD,and ESKD. 展开更多
关键词 Nephrotic syndrome Steroid resistance Chronic kidney disease Steroid-sparing medication Jordan
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The Feasibility of a Proposed Plant Design of Sheep Wool Insulation Material in Jordan to Eliminate the Negative Environmental Impact of Wasted Sheep Wool 认领 引用
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作者 Khalid M. Al-Malah Mais R. Al-Khalafat +3 位作者 Nataly A. Al-Zayadeen Aseel S. Al Mfalfal Bahieh M. Alma’atah Taha M. Alkhamis 《Journal of Environmental Protection》 2025年第2期130-147,共18页
This applied research seeks to explore feasible plant design for manufacturing insulation materials for construction projects using waste sheep fleece to address environmental issues related to wasted sheep wool and e... This applied research seeks to explore feasible plant design for manufacturing insulation materials for construction projects using waste sheep fleece to address environmental issues related to wasted sheep wool and enhance the gross national product. The process starts by collecting low-cost sheep fleece from farms and processed via a production line, including scouring, plucking, carding, thermal bonding, and packing. The design process involves determining an optimal location, infrastructure, staffing, machinery, environmental impact, and utilities. A final economic analysis is undertaken to estimate the product’s cost, selling price, and break-even point based on the anticipated capital and operational costs. The plant is intended to process 6778 tons of sheep wool annually. The study suggests that Mafraq Industrial City is a perfect location for the plant, and purchasing land and structures is the optimal option. The projected capital cost is 1,416,679 USD, while the anticipated operational costs amount to 3,206,275 USD. Insulation material production is estimated to be 114,756 m3 annually. The material may be manufactured into 1 m wide, 0.05 m thick sheets for 2.02 USD per square meter. Thus, for a 10-year plant, a 2.47 USD/m2 selling price breaks even in one year. 展开更多
关键词 Sheep Wool Solid Waste Plant Design Insulation Materials Jordan
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