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Assessing the Water-Energy-Food-Ecosystems Nexus in Smart Irrigation: A Potato Farming Case Study in Lebanon
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作者 Ali Karnib Hammou Laamrani Jauad El Kharraz 《Journal of Geoscience and Environment Protection》 2024年第8期80-96,共17页
This study examines the Water-Energy-Food-Ecosystems (WEFE) nexus in Lebanese agriculture, with a focus on the shift from conventional surface irrigation techniques to advanced smart irrigation systems in the Bekaa re... This study examines the Water-Energy-Food-Ecosystems (WEFE) nexus in Lebanese agriculture, with a focus on the shift from conventional surface irrigation techniques to advanced smart irrigation systems in the Bekaa region, specifically targeting potato cultivation. The study quantitatively analyzes the interaction among water, energy, and agricultural outputs at the farm scale using the WEFE Nexus framework for scenario analysis. It evaluates variations in water productivity, environmental effects, and economic outcomes, offering a detailed view of existing practices and their sustainable improvement potential. The WEFE Nexus assessment demonstrates that smart irrigation integration significantly decreased resource usage: water consumption was reduced by 58%, diesel fuel use for irrigation dropped by 57%, and the demand for labor and fertilizers decreased by 47% and 49%, respectively. This change led to enhanced crop yields and increased resource efficiency, demonstrating the potential of smart irrigation as a transformative strategy for sustainable agriculture in Lebanon and other arid areas. Economic analysis showed that farmers could recover the costs of installing the smart irrigation system within 3 months. The findings highlight the need for further research on integrating smart irrigation with renewable energy, showing potential for sustainable agricultural development. . 展开更多
关键词 Water-Energy-Food-Ecosystems nexus Sustainable Agriculture Smart Irrigation Q-nexus Model
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A Triple Nexus Water-Energy-Housing (WEH) Framework Modelling towards Improved Decision-Making in Humanitarian Operations
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作者 Anicet Adjahossou 《Open Journal of Applied Sciences》 2024年第4期927-949,共23页
Given the challenges facing most humanitarian operations worldwide, a change of approach is needed to ensure greater sustainability of humanitarian settlements right from the planning stage. Some studies attribute uns... Given the challenges facing most humanitarian operations worldwide, a change of approach is needed to ensure greater sustainability of humanitarian settlements right from the planning stage. Some studies attribute unsustainability to inadequate provision of basic resources and highlight the apparent bottlenecks that prevent access to the meaningful data needed to plan and remedy problems. Most operations have relied on an “ad hoc ism” approach, employing parallel and disconnected data processing methods, resulting in a wide range of data being collected without subsequent prioritization to optimize interconnections that could enhance performance. There have been little efforts to study the trade-offs potentially at stake. This work proposes a new framework enabling all subsystems to operate in a single system and focusing on data processing perspective. To achieve this, this paper proposes a Triple Nexus Framework as an attempt to integrate water, energy, and housing sector data derived from a specific sub-system within the overall system in the application of Model-Based Systems Engineering. Understanding the synergies between water, energy, and housing, Systems Engineering characterizes the triple nexus framework and identifies opportunities for improved decision-making in processing operational data from these sectors. Two scenarios illustrate how an integrated platform could be a gateway to access meaningful operational data in the system and a starting point for modeling integrated human settlement systems. Upon execution, the model is tested for nexus megadata processing, and the optimization simulation yielded 67% satisfactory results, demonstrating that an integrated system could improve sustainability, and that capacity building in service delivery is more than beneficial. 展开更多
关键词 Humanitarian Settlement nexus Framework WATER ENERGY HOUSING Sustainability Systems Engineering (SE) Model-Based Systems Engineering (MBSE) Systems Modeling Language (SysML)
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基于Nexus的常州工学院绿色校园可持续发展研究
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作者 李悦 王利平 《城市建筑》 2023年第22期172-175,共4页
高校校园作为聚集师生的空间单元,在低碳、可持续发展的大背景下,绿色校园的建设逐渐深入各个高校中。本研究以常州工学院绿色校园作为研究对象,通过实地踏勘与现场调研的方法,充分了解校园的实际情况。运用Nexus可持续分析方法,以校园... 高校校园作为聚集师生的空间单元,在低碳、可持续发展的大背景下,绿色校园的建设逐渐深入各个高校中。本研究以常州工学院绿色校园作为研究对象,通过实地踏勘与现场调研的方法,充分了解校园的实际情况。运用Nexus可持续分析方法,以校园中人的价值、生态服务和规划治理作为绿色校园的关联要素;进而建立绿色校园的分析层与目标层,构建基于Nexus的绿色校园可持续发展分析体系,由此展开对常州工学院绿色校园的可持续发展分析,以便为绿色校园的建设提供一定参考,以及为研究绿色校园可持续发展提供新思路。 展开更多
关键词 绿色校园 可持续发展 nexus 常州工学院
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分布式数字音频路由系统NEXUS 被引量:3
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作者 周明辉 《电声技术》 2010年第9期79-81,共3页
介绍了一个大而复杂的矩阵和数字网络系统NEXUS系统,分析了NEXUS的音频网络系统,并从输入/输出资源和矩阵两个方面分析了NEXUS的应用。
关键词 nexus TDM 矩阵
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亦秀亦豪 腕挟风雷——从Jesperson的rank、junction、nexus角度赏析张晓风的行文风格
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作者 张秀杰 《海外英语》 2012年第10X期273-274,共2页
该文首先阐述了Jesperson的rank、junction与nexus的基本内涵。在大量实例分析的基础上,作者指出张晓风散文中修饰首品词的次品词别具一格,妙趣横生。然而可以充分体现张晓风散文非凡艺术创造力的淋漓健笔还在于充满动感、富有气势的ne... 该文首先阐述了Jesperson的rank、junction与nexus的基本内涵。在大量实例分析的基础上,作者指出张晓风散文中修饰首品词的次品词别具一格,妙趣横生。然而可以充分体现张晓风散文非凡艺术创造力的淋漓健笔还在于充满动感、富有气势的nexus结构的大量采用。 展开更多
关键词 词品 组合式 连系式 动感 气势
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以Jesperson的Nexus理论赏中国古诗词的诗眼妙用
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作者 张秀杰 《海外英语》 2015年第17期199-200,共2页
该文首先分析了Jesperson的junction与nexus两种不同的词语组合方式。通过实例分析,作者指出古诗词中为全诗增色不少的诗眼往往是句中的动词,或是其他词性的词活用为动词。动词妙用不仅能铸就诗词意境,增强诗篇形象性,还能引发读者共鸣... 该文首先分析了Jesperson的junction与nexus两种不同的词语组合方式。通过实例分析,作者指出古诗词中为全诗增色不少的诗眼往往是句中的动词,或是其他词性的词活用为动词。动词妙用不仅能铸就诗词意境,增强诗篇形象性,还能引发读者共鸣。因而进一步印证了Jesperson的nexus结构富有动感、充满活力特征。 展开更多
关键词 诗眼 连系式 动感
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Nexus及其在英汉文学翻译中的应用 被引量:2
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作者 邓文韬 《成都理工大学学报(社会科学版)》 2005年第3期40-42,共3页
junction和nexus是丹麦语言学家OttoJespersen提出的一对语言学概念。Jespersen认为一个首品词(primary)和一个附着语(adjunct)组合成一个偏正结构(junction),而一个首品词(primary)和一个谓语(predicate)组合成一个主谓结构(nexus)。Ju... junction和nexus是丹麦语言学家OttoJespersen提出的一对语言学概念。Jespersen认为一个首品词(primary)和一个附着语(adjunct)组合成一个偏正结构(junction),而一个首品词(primary)和一个谓语(predicate)组合成一个主谓结构(nexus)。Junction是一个意义的合成,只表达一个意义;Nexus则包含两个意义。Jespersen对比二者得出结论:junction就好比一幅画,而nexus则是一个过程,一出戏;前者较为呆板,缺乏生气,后者却灵活生动,富于生机。本文着重比较了junction和nexus的不同之处,进而讨论了nexus在英汉文学翻译中的应用,以期在实践中验证nexus的优势。 展开更多
关键词 JUNCTION nexus 偏正结构 主谓结构
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利用NEXUS模型对质心系碰撞能量200GeV的Au+Au碰撞中质子-反质子产额比的研究(英文)
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作者 李会红 刘复明 刘峰 《华中师范大学学报(自然科学版)》 CAS CSCD 北大核心 2002年第2期155-160,共6页
采用一种新的强相互作用模型—— NEXUS产生器产生数据 ,研究了质心系能量 s N N =2 0 0 Ge V时 Au+Au碰撞下的质子 -反质子产额比 ,讨论了不同横动量和快度区间内产额比对碰撞对心度的依赖性 .发现中心快度区的质子 -反质子产额比不明... 采用一种新的强相互作用模型—— NEXUS产生器产生数据 ,研究了质心系能量 s N N =2 0 0 Ge V时 Au+Au碰撞下的质子 -反质子产额比 ,讨论了不同横动量和快度区间内产额比对碰撞对心度的依赖性 .发现中心快度区的质子 -反质子产额比不明显依赖于碰撞对心度、横动量和快度 ;对于快度和横动量在 |y|<1 .0和 pt<1 .0 Ge V条件下的最小无偏碰撞事件中 ,NEXUS模型的质子 -反质子产额比为 0 .943± 0 .0 0 2 ( stat.) . 展开更多
关键词 nexus模型 质心系 碰撞 能量 质子-反质子产额比 对心度
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Urban food-energy-water nexus:a case study in Beijing 被引量:1
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作者 Xinqing Li Lixiao Zhang +2 位作者 Pengpeng Zhang Yan Hao Xin Xiong 《Chinese Journal of Population,Resources and Environment》 2021年第3期274-282,共9页
Food,energy and water(FEW)are indispensable,irreplaceable and safeguarding resources with tangled interlinkages among each other,often framed in terms of‘nexus’.Cities have become the bustling hubs of resource consu... Food,energy and water(FEW)are indispensable,irreplaceable and safeguarding resources with tangled interlinkages among each other,often framed in terms of‘nexus’.Cities have become the bustling hubs of resource consumption and production,facing the most intense stress.Globally,food security,fresh water shortage and fossil energy exhaustion have become the greatest challenge for the sustainable development of cities in the future.Systematic analysis and simulation of dynamic evolution of urban FEW demand and supply and its nexus would add significant and practical value for macro-management such as ensuring the security of urban resource.Taking Beijing as the case study,we established a dynamic model for the FEW demand and supply from the perspective of cross-ectoral and cross-regional nexus with the Stella modelling platform,then it was run for simulating the dynamic changes and nexus characteristics of FEW during the interval between 2016 and 2035.The results showed that:①The gap between local production and demand of these three resources in Beijing will continue to increase.In 2035,Beijing will need 2.16 million tons of grain,0.83 million tons of meat,4.6 billion m3 of water and 91.65 million tons of standard coal of energy while the resources produced and supplied by locality independently will be 0.21 million tons,0.23 million tons,3.3 billion cubic meters and 16.5 million tons of standard coal respectively.Beijing has to draw on cross-boundary production to meet FEW-use with the increasing gap between local supply and demand.②There is a developing trend of the absolute quantity of interaction among FEW.Structurally,the‘outsourcing’feature is obvious and the indigenous nexus links of three resources are shifting to back-end supply chain such as transportation and treatment.③The change of nexus indexes are mainly affected by the mutual and strong dependence between food and water.Food and energy depend more and more on each other;in contrast,the inter-relationship between water and energy is more stable.In addition,inter-regional FEW nexus is strengthened.④To improve systematic management of urban resources,we need to capture multi-tradeoffs of the FEW system comprehensively and establish a multi-regional and multi-factor integrated and collaborative resource management mechanism. 展开更多
关键词 Food-energy-water(FEW) nexus Dynamic simulation STELLA
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A Quantitative Assessment Framework for Water, Energy and Food Nexus 被引量:1
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作者 Ali Karnib 《Computational Water, Energy, and Environmental Engineering》 2017年第1期11-23,共13页
This paper presents a quantitative assessment framework of the Water, Energy and Food (W-E-F) nexus. The proposed approach allows integrated quantitative assessments by considering all the W-E-F intersectoral linkages... This paper presents a quantitative assessment framework of the Water, Energy and Food (W-E-F) nexus. The proposed approach allows integrated quantitative assessments by considering all the W-E-F intersectoral linkages and the competing demand for W-E-F resources to evaluate future development scenarios. Firstly, the conceptual model adopted for the proposed framework is presented. Secondly, a detailed methodological framework is introduced to serve as W-E-F nexus evaluation and planning platform. At the practical level, the model is applied to evaluate the W-E-F nexus in Lebanon. Finally, the conclusions and further developments are presented. 展开更多
关键词 WATER ENERGY FOOD nexus Approach SUSTAINABLE Development
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Metabolic-epigenetic nexus in regulation of stem cell fate 被引量:1
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作者 Yi Liu Di-Xin Cui +3 位作者 Yue Pan Si-Han Yu Li-Wei Zheng Mian Wan 《World Journal of Stem Cells》 SCIE 2022年第7期490-502,共13页
Stem cell fate determination is one of the central questions in stem cell biology,and although its regulation has been studied at genomic and proteomic levels,a variety of biological activities in cells occur at the m... Stem cell fate determination is one of the central questions in stem cell biology,and although its regulation has been studied at genomic and proteomic levels,a variety of biological activities in cells occur at the metabolic level.Metabolomics studies have established the metabolome during stem cell differentiation and have revealed the role of metabolites in stem cell fate determination.While metabolism is considered to play a biological regulatory role as an energy source,recent studies have suggested the nexus between metabolism and epigenetics because several metabolites function as cofactors and substrates in epigenetic mechanisms,including histone modification,DNA methylation,and microRNAs.Additionally,the epigenetic modification is sensitive to the dynamic metabolites and consequently leads to changes in transcription.The nexus between metabolism and epigenetics proposes a novel stem cell-based therapeutic strategy through manipulating metabolites.In the present review,we summarize the possible nexus between metabolic and epigenetic regulation in stem cell fate determination,and discuss the potential preventive and therapeutic strategies via targeting metabolites. 展开更多
关键词 METABOLISM Epigenetic regulation Stem cell fate nexus effect
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“联系式”(Nexus)和“读”的相似点及其引发的思考
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作者 陈荣辉 郑鸿芹 《四川教育学院学报》 2007年第5期82-84,共3页
汉语语法分析沿用英语词类划分标准,造成了在词类划分标准上长期争论不休。返观汉英两种语言中两部早期语法著作,我们不难发现,其实语法分析还可以有另外一个维度。在该文中,笔者就奥托叶斯伯森(Otto Jesperson)《英语文法精要》(Essent... 汉语语法分析沿用英语词类划分标准,造成了在词类划分标准上长期争论不休。返观汉英两种语言中两部早期语法著作,我们不难发现,其实语法分析还可以有另外一个维度。在该文中,笔者就奥托叶斯伯森(Otto Jesperson)《英语文法精要》(Essentials ofEnglish Grammar)(1933)和《马氏文通》(马建忠,1983)两书中“联系式”(Nexus)和“读”两个概念作一简单对比分析。理解这两个概念的相似之处,不仅能给语法分析提供另一视角,还对翻译实践有一定的借鉴意义。 展开更多
关键词 联系式 “读” 相似点
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Water-Energy-Food Nexus: A Coupled Simulation and Optimization Framework
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作者 Ali Karnib 《Journal of Geoscience and Environment Protection》 2017年第4期84-98,共15页
Water, Energy and Food (WEF) nexus systems are developed to model and analyze interactions across and between WEF sectors. WEF nexus simulation models permit evaluating the direct and indirect WEF quantitative interac... Water, Energy and Food (WEF) nexus systems are developed to model and analyze interactions across and between WEF sectors. WEF nexus simulation models permit evaluating the direct and indirect WEF quantitative interaction effects in response to change of technology and/or demand. Optimization models can help to find the optimal combinations of WEF nexus system policy options and parameters that lead to the best performance of the system. This paper describes a framework for integrating quantitative WEF nexus simulation model (the Q-Nexus Model) with an optimization tool, which will give policy makers the ability to compromise best policy options based on WEF nexus simulator. The developed method is then applied to the numerical experiment and the results are discussed. Lastly, the conclusions and further developments are presented. 展开更多
关键词 WATER ENERGY FOOD nexus Simulation Optimization SUSTAINABLE Development
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Evaluation of Technology Change Effects on Quantitative Assessment of Water, Energy and Food Nexus
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作者 Ali Karnib 《Journal of Geoscience and Environment Protection》 2017年第3期1-13,共13页
The quantitative assessment framework of the water, energy and food (WEF) nexus proposed by [1] permits the analysis of the WEF as an interconnected system of resources that directly and indirectly affect one another.... The quantitative assessment framework of the water, energy and food (WEF) nexus proposed by [1] permits the analysis of the WEF as an interconnected system of resources that directly and indirectly affect one another. The model performs simulation of policy options and scenarios that respond to quantitative variations of the use of WEF resources. One of the key outcomes of the mathematical formulation of the model is the WEF nexus intersectoral technology matrix. In order to take advantages and analyzing policy options of adopting high efficient intersectoral use technologies, WEF intersectoral use intensities and intersectoral allocation coefficients are introduced to the technology matrix of the nexus model proposed in [1]. The developed method is then applied to evaluate the WEF nexus case study of Lebanon. Lastly, the conclusions and further developments are presented. 展开更多
关键词 WATER ENERGY FOOD nexus Technology CHANGES SUSTAINABLE Development
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GE新华OC 6000e Nexus系统在11号机DEH系统升级改造中的应用 被引量:1
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作者 杜箭 《热电技术》 2018年第4期51-56,共6页
针对我厂11号机组原DEH控制系统设备老化、供电系统复杂、调门控制精度低的缺点,在11号机组大修中对DEH控制系统进行了升级改造,由原来的DEH-V型控制系统升级为OC 6000e Nexus控制系统。本文简述了DEH系统的改造背景、改造的方案、改造... 针对我厂11号机组原DEH控制系统设备老化、供电系统复杂、调门控制精度低的缺点,在11号机组大修中对DEH控制系统进行了升级改造,由原来的DEH-V型控制系统升级为OC 6000e Nexus控制系统。本文简述了DEH系统的改造背景、改造的方案、改造后新系统的特点及功能介绍,并对存在的问题提出解决方案。 展开更多
关键词 OC 6000e nexus DEH 升级 应用
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The Risk of Water, Energy, and Food Nexus under Regional Metabolism for Multi-Sector City
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作者 I-Chun Chen 《Journal of Environmental Protection》 2020年第10期909-920,共12页
The Urban Nexus system creates another risk characteristic of resource metabolism. Urban metabolism has complex effects from multi-levels and multi-sectors resulted from the changes socio-economic. It is crucial to im... The Urban Nexus system creates another risk characteristic of resource metabolism. Urban metabolism has complex effects from multi-levels and multi-sectors resulted from the changes socio-economic. It is crucial to implement effective urban governance;in particular, resource metabolism creates a new nexus risk by dramatic growth in urban areas. The resource metabolism associates with water, energy, and food consumption on an urban scale that drives the intensity in resource metabolism. Therefore, this study estimates the FEW intensity of the nexus and demand side in material flow analysis by organizing into four categories of resource metabolism, including supply side, process side, demand side, and final sink. This research compares different characteristics for a small island dominated by tourism and a multi-sector city dominated by increasing economic activity. The resource intensity on the demand side and resource service systems are evaluated to identify the nexus intensity and risk for FEW nexus at the urban scale. This study determines that constraints for resource service systems are complex, and suggests that resource consumption intensity is higher in that particular nexus and demand sector. To avoid excessive loads on resource metabolism, sustainable resource management should implement trade-off strategies after analyzing the resource metabolism for urban nexus. 展开更多
关键词 nexus Risk FEW Resource Metabolism Multi-Sector City
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敢将iPhone挑下马 深入解析Nexus One(下)
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作者 赵飞 《微型计算机》 2010年第15期105-108,共4页
在本文上篇完成以后,围绕着iPhone发生了两件大事。一是苹果正式发布了iPhone OS 4,增加了多任务能力;二是下一代iPhone被意外曝光,除了造型变化外,硬件规格大有赶超Nexus One之势。这也意味着,iPhone和Android手机的较量将更多... 在本文上篇完成以后,围绕着iPhone发生了两件大事。一是苹果正式发布了iPhone OS 4,增加了多任务能力;二是下一代iPhone被意外曝光,除了造型变化外,硬件规格大有赶超Nexus One之势。这也意味着,iPhone和Android手机的较量将更多取决于综合实力。 展开更多
关键词 IPHONE nexus 解析 造型变化 硬件规格 综合实力 多任务 OS
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NEXUS双向系统的结构(续)
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《电信科学》 北大核心 1999年第5期50-51,共2页
6自动车辆定位中心(AVLHQ)AVLHQ安装在办公室里,主要用于追踪被盗汽车和即时监控,如图4所示,包括以下部分:·AVL逻辑引擎。·告警接收设备。·显示设备。·AVL数据编程(DP)。AVLHQ的... 6自动车辆定位中心(AVLHQ)AVLHQ安装在办公室里,主要用于追踪被盗汽车和即时监控,如图4所示,包括以下部分:·AVL逻辑引擎。·告警接收设备。·显示设备。·AVL数据编程(DP)。AVLHQ的运行是与CCC运行同时进行的。AVLHQ单元是独立... 展开更多
关键词 nexus双向系统 汽车 自动车辆定位 AVLHQ
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NEXUS双向系统的结构
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《电信科学》 北大核心 1999年第4期54-55,共2页
1系统概述NEXUS双向系统的整体结构如图1所示,通过现有的单向寻呼设备发送出站消息,由用户侧的TWAGER接收,TWAGER发出的入站消息由基站接收,基站进行差错检测和纠错,处理过的消息被发送到CCC(命令和控制... 1系统概述NEXUS双向系统的整体结构如图1所示,通过现有的单向寻呼设备发送出站消息,由用户侧的TWAGER接收,TWAGER发出的入站消息由基站接收,基站进行差错检测和纠错,处理过的消息被发送到CCC(命令和控制中心)中的数据库形成一个动态文件,... 展开更多
关键词 nexus双向系统 结构 双向导呼机
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NEXUS系统的关键技术及特点
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《电信科学》 北大核心 1999年第6期50-51,共2页
1概述NEXUS双向寻呼和定位系统是建立在现有的单向寻呼系统基础上,而无需对现有的单向寻呼系统进行任何改动.在NEXUS双向寻呼系统和现有的单向寻呼系统(出站信道)之间采用TNPP协议进行连接,NEXUS双向系统通过... 1概述NEXUS双向寻呼和定位系统是建立在现有的单向寻呼系统基础上,而无需对现有的单向寻呼系统进行任何改动.在NEXUS双向寻呼系统和现有的单向寻呼系统(出站信道)之间采用TNPP协议进行连接,NEXUS双向系统通过这个协议进行寻呼信息和同步建立消息... 展开更多
关键词 nexus系统 双向寻呼系统 GSM 移动通信
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