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50 GHz optical true time delay beamforming in hybrid optical/mm-wave access networks with multi-core optical fiber distribution

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Chinese Optics Letters 2018年第4期16卷 25-29页

作者： álvaro morales Idelfonso Tafur Monroy Fredrik Nordwall Tommi Sφrensen Department of Electrical Engineering Electro-Optical Communications Eindhoven University of Technology 5600 MB Eindhoven The Netherlands Tektronix AB Kista Sweden GoMeasure ApS Albertslund Denmark

We propose and experimentally validate an optical true time delay beamforming scheme with straightforward integration into hybrid optical/millimeter（mm）-wave access networks. In the proposed approach, the most complex functions, including the beamforming network, are implemented in a central office, reducing the complexity and cost of remote antenna units. Different cores in a multi-core fiber are used to distribute the modulated signals to high-speed photodetectors acting as heterodyne mixers. The mm-wave carrier frequency is fixed to 50 GHz（VBand）, thereby imposing a progressive delay between antenna elements of a few picoseconds. That true time delay is achieved with an accuracy lower than 1 ps and low phase noise.

关键词： MCF GHz optical true time delay beamforming in hybrid optical/mm-wave access networks with multi-core optical fiber distribution

基于疫情隔离政策的里奥班巴城多功能绿道设计研究

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基于疫情隔离政策的里奥班巴城多功能绿道设计研究

作者： morales GONZALEZ JANETH ALEXANDRA 西南交通大学

学位级别：硕士

为应对新冠肺炎疫情而采取的静态管理措施也伴随着若干问题。本研究关注封闭管理过程中,城市绿地空间的缺乏对城市居民的影响,包括生理、心理、社会和经济等方面。尽管城市已建有公园、广场等各类绿地以及各种游憩空间,然而当城市处于... 详细信息

为应对新冠肺炎疫情而采取的静态管理措施也伴随着若干问题。本研究关注封闭管理过程中,城市绿地空间的缺乏对城市居民的影响,包括生理、心理、社会和经济等方面。尽管城市已建有公园、广场等各类绿地以及各种游憩空间,然而当城市处于封闭管理时,上述空间的重要性将进一步提高,成为居民生活不可缺少的一部分,在疫情期间承担了更加复杂的功能;本研究的内涵在于了解上述空间是否为应对疫情做好了准备,能否与其在封闭管理时的重要性相匹配。继而,本研究旨在将多功能叠加应用于城市绿地规划实践中。与此同时,本研究选择生态系统服务作为多功能叠加的理论基础,原因是其提供了目前为止最为合理和全面的阐释,包括生态系统组分功能及其多重分析方法。简而言之,城市绿地需要多功能复合。基于上述认识,本研究立足于连接已规划与未规划的城市空间以建立绿色廊道,分析城市空间和自然空间共存的基础,根据不同现状进行适应、转变和设计以重塑城市环境,为社会带来重要的复合效益。研究通过辨析相关理念,试图解答这一问题:为应对新冠肺炎等健康危机而采取的封闭管理背景之下,我们应如何基于多功能叠加的理论基础,通过不同的方法步骤构建城市绿色廊道?城市绿色走廊构建的基础基于封闭管理中居民对城市绿化的社会、经济需求。同时城市绿色廊道作为对城市更新设计的实践,将作为病毒抵抗系统一个不可或缺的部分,保护其中的居民并保障应急服务和供应的正常运转。以上研究目标在对里奥班巴市的分析和判断中进行实例验证。研究关注案例城市的社会和结构方面,如河流、灌渠、主要道路、林荫道以及基于居民和研究人员经验判断的潜在廊道,借助生态网络分析工具——引力模型工具(Arc GIS)将城市内外的重要绿色节点项链,形成基于最低成本路径的绿色廊道模型。最后,建立基于社会分析、经验分析和生态分析的对比方法进行廊道的多功能叠加,即将上述所有分析特征结合形成整体分析,借助mapping分析的方法选择具有最佳引力系数的走廊来恢复和保护指定的栖息地节点。在社会分析中,本研究调查结果显示里奥班巴市缺乏绿地和游憩空间;百分之七十的受访者在疫情期间依然继续使用城市绿地空间,即使这些区域并未做好应对这一问题的准备或设计,人民仍然认为绿地空间相较于疫情爆发之前对心理和生理健康有着更为重要的作用;百分之五十八的受访者在实行封闭管理之后更偏爱与前往公园或自然保护区,对于自然区域有着更多的关注。此外,研究通过生态网络设计分析,在城市和近郊生成了七条引力系数最高的重要廊道来解决城市绿化空间不足的问题,随后设置三种不同的场景以表现这些廊道的主要生态特征,例如线形、边界效应、资源的一致性、连通性、可持续性、以及最重要的多功能叠加。研究从社会和生态两方面提出了相关展望。在社会方面,研究认为城市绿地可达性和资源分配的公平非常重要,其中包含自然资源、医疗资源、安全资源以及其他有助于提升当地经济的资源,构建绿色廊道可以借助于对社区不同的部门进行干预以帮助最为弱势的群体。在生态方面,研究综合生态过程、经济功能、社会文化功能、历史功能和美学功能提出多功能叠加。社会和生态方面的主张最终回归到城市中的绿色廊道。在封闭管理的不同阶段,居民在这些区域中也有两种不同的活动方式。从这个角度上,本研究对里奥班巴市绿地和游憩空间的重新规划和设计具有积极意义,通过空间重组策略,建立必要的健康节点、安全节点和游憩节点,避免人群在城市中心或是诸如市场、公园和广场的过分聚集。结合构建的绿廊空间,作为城市环境系统提升的重要组成部分,诸如交通、防洪、地区和区域经济支持等关键服务会得到改进。

关键词：新冠病毒静态管理绿色廊道多功能叠加空间重组

Acute lymphocytic myocarditis

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Journal of Geriatric Cardiology 2018年第7期15卷 527-528页

作者： Maedeh Ganji Jose Ruiz-morales Saif Ibrahim Cardiology Department University of Florida Jacksonville FL USA Internal Medicine Department University of Florida Jacksonville FL USA Interventional Cardiology Department University of Alabama-Birmingham Birmingham AL USA

Myocarditis is an inflammatory disease of the *** clinical presentation of myocarditis may range from subclinical to sudden *** incidence of fatal myocarditis,which often presents with sudden or rapid death,has been estimated at 0.15/100.000 in the general population and is highest in infants and young adults (but may affect any age group).However,diffuse myocarditis in autopsies of sudden death is< 2% in *** usually presents with heart failure symptoms over a few days to *** classic presentation of viral myocarditis includes a viral prodrome with fever,myalgia,and upper respiratory *** present with dyspnea,chest pain,and *** abnormalities are often present,along with evidence of myocardial damage with elevated troponin *** present the case of a 78-year old white male who died from acute cardiac decompensation from diffuse acute lymphocytic myocarditis.

关键词：心肌炎淋巴球临床症状成年人死亡年龄组

Conservation laws for energy and momentum in curved spaces

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第4期8卷 665-668页

作者： LóPEZ-BONILLA J. morales J. OVANDO G. Section of Postgraduate Studies and Research Superior School of Mechanical and Electrical EngineeringNational Polytechnic InstituteCP 07738Mexico Division of Basic Sciences and Engineering Autonomous Metropolitan UniversityCP 02200Mexico

In arbitrary Riemannian 4-spaces, continuity equations are constructed which could be interpreted as conservation laws for the energy and momentum of the gravitational field. Special attention is given to general relativity to obtain, of natural manner, the pseudotensors of Einstein, Landau-Lifshitz, Mller, Goldberg and Stachel, and also the conservation equations of Komar, Trautman, DuPlessis and Moss.

关键词：弯曲空间能量守衡定律动量守衡定律拉格朗日黎曼空间

Engineering magnetic nanostructures with inverse hysteresis loops

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Nano Research 2016年第8期9卷 2347-2353页

作者： Beatriz Mora Nastassia Soriano Carolina Redondo Alberto Arteche David Navas Rafael morales Dpto. de Quimica-Fisica Universidad del Pais Vasco UPWEHU 48940 Leioa Spain IFIMUP-IN and Dept. Fisica e Astronomia Universidade do Porto 4169007 Porto Portugal Dpto. de Qulmica-Ffsica & BCMaterials Universidad del Pals Vasco UPV/EHU 48940 Leioa Spain IKERBASQUE Basque Foundation for Science 48011 Bilbao Spain

Top-down lithography techniques allow the fabrication of nanostructured elements with novel spin configurations, which provide a new route to engineer and manipulate the magnetic response of sensors and electronic devices and understand the role of fundamental interactions in materials science. In this study, shallow nanostructure-patterned thin films were designed to present inverse magnetization curves, i.e., an anomalous magnetic mechanism characterized by a negative coercivity and negative remanence. This procedure involved a method for manipulating the spin configuration that yielded a negative coercivity after the patterning of a single material layer. Patterned NiFe thin films with trench depths between 15%-25% of the total film thickness exhibited inverse hysteresis loops for a wide angular range of the applied field and the trench axis. A model based on two exchange-coupled subsystems accounts for the experimental results and thus predicts the conditions for the appearance of this magnetic behavior. The findings of the study not only advance our understanding of patterning effects and confined magnetic systems but also enable the local design and control of the magnetic response of thin materials with potential use in sensor engineering.

关键词： magnetic nanostructures magnetic patterning effects inverted loops negative coercivity negative remanence

Image processing methods to evaluate tomato and zucchini damage in post-harvest stages

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International Journal of Agricultural and Biological Engineering 2017年第5期10卷 126-133页

作者： José Antonio Alvarez-Bermejo Cynthia Giagnocavo Li Ming Encarnación Castillo morales Diego P.morales Santos Yang Xinting Department of Informatics CeiA3University of AlmeriaAlmeriaCP 04120Spain Cátedra(Chair)Coexphal-UAL of Horticulture Cooperative Studies and Sustainable DevelopmentUniversity of AlmeríaSpain Beijing Research Center for Information Technology in Agriculture/National Engineering Research Center for Information Technology in Agriculture/National Engineering Laboratory for Agri-product Quality Traceability/Key Laboratory for Information Technologies in Agriculture Ministry of AgricultureBeijing 100097China Department of Electronics and Computer Technology Facultad de CienciasGranadaCP 18071Spain

Through the supply chain,the quality or quality change of the products can generate important *** quality control in some steps is made manually that supposes a high level of subjectivity,controlling the quality and its evolution using automatic systems can suppose a reduction of the *** some automatic image analysis techniques in the case of tomatoes and zucchini is the main objective of this *** steps in the supply chain are considered,the feeding of the raw products into the handling chain(because low quality generates a reduction of the chain productivity)and the cool storage of the processed products(as the value at the market is reduced).It was proposed to analyze the incoming products at the head the processing line using CCD cameras to detect low quality and/or dirty products(corresponding to specific farmers/suppliers,it should be asked to improve to maintain the productivity of the line).The second stage is analyzing the evolution of the products along the cool chain(storage and transport),the use of an App developed to be use under Android was proposed to substitute the“visual”evaluation used in *** algorithms used,including stages of pre-treatment,segmentation,analysis and presentation of the results take account of the short time available and the limited capacity of the *** performance techniques were applied to the homography stage to discard some of the images,resulting in better *** threads and renderscript kernels were created to parallelize the methods used on the resulting images being able to inspect faster the *** proposed method achieves success rates comparable to,and improving,the expert inspection.

关键词： image processing color space smartphone efficient stitching homography controlled supervision artificial vision embedded parallel processing injury assessment traceability post-harvest control feature detection

Implications of using two low-power continuous-wave lasers for polishing

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International Journal of Extreme Manufacturing 2020年第3期2卷 174-182页

作者： Wenxuan Zhang Kiwan Wong Miguel morales Carlos Molpeceres Craig B Arnold Department of Chemical and Biological Engineering Princeton UniversityPrincetonNJ 08544United States of America Princeton Institute for the Science and Technology of Materials Princeton UniversityPrincetonNJ 08544United States of America Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyHong Kong Centro Laser UPM Universidad Politecnica de MadridAlan Turing 128031MadridSpain Department of Mechanical and Aerospace Engineering Princeton UniversityPrincetonNJ 08544United States of America

Laser polishing is widely employed to reduce the surface roughness of products with complex *** laser polishing techniques use a single high-power Gaussian beam to melt and smooth a thin layer of surface ***,the reliance on high power lasers can present practical challenges such as minimizing surface evaporation or reducing overall *** this work,we combined two identical low-power laser beams with a spatial offset in between them to construct an elliptical *** changing the spatial offset,combined beams with different lengths along the major axis can be *** observe over 20%improvement in line roughness reduction using this approach compared to a single Gaussian laser beam with the same total ***,both experiment and simulation results suggest such improvement is because this dual-laser set-up can create a longer molten pool compared to a single laser.

关键词： laser polishing surface roughness dual lasers low-power

Solanum lycopersicum: Novelties for Climate Factors and Its Agronomic Management for High Yields

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World Journal of Engineering and Technology 2022年第3期10卷 605-612页

作者： Víctor García-Gaytán Soledad García-morales Ana V. Coria-Téllez Fanny Hernández-Mendoza Janet María León-morales El Colegio de Michoacán La Piedad México Profesor Investigador Mejoramiento Integral de Plantas a Través de la Genética y Nutrición Vegetal La Piedad México (CONACYT) Centro de Investigación y Asistencia en Tecnología y Diseñ o del Estado de Jalisco Zapopan México Coordinación Académica Región Altiplano Oeste Universidad Autónoma de San Luis Potosí San Luis Potosí México

The intensive production of vegetables such as tomatoes depends on various strategies to achieve high *** of this manuscript is to provide scientific and technological strategies for the intensive production of tomato or other vegetables in mega-production factories. However, with the advancement of knowledge, new improvements in the strategies will be incorporated. We have carried out research related to growth and yield variables in S. Lycopersicum. From this research we have worked on the intensive production of this noble vegetable at an industrial level. The results obtained are improvements in the production system. The improvements include the selection of the appropriate variety, germination and development of seedlings in a certified nursery. Trans-plantation in soil or hydroponics. The conditions of nutrient applications from the irrigation head system. The ventilation system and monitoring of climatic factors both day and night (temperature and relative humidity). Monitoring of macro- and micronutrients in the plant system, including Ca, K, Fe, and Zn. Soil fertility analyzes should include: primary and secondary macronutrients (ppm), organic matter (OM), EC, pH, bulk density (BD), and cation exchange capacity (CEC). The nutritional diagnosis to confirm ranges of sufficiency. As a tool in plant nutrition programs, foliar application can include biostimulants and growth regulators. The foregoing can be considered strategies for the integral management of the tomato crop.

关键词： Integrated Management Climate Factors Plant Nutrition Growth Regulators

Adsorption of Mn^(2+) from aqueous solution using Fe and Mn oxide-coated sand

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Journal of Environmental Sciences 2013年第7期25卷 1483-1491页

作者： Chi-Chuan Kan Mannie C Aganon Cybelle morales Futalan Maria Lourdes P Dalida Institute of Hot Spring Industry Chia Nan University of Pharmacy and Science Environmental Engineering Unit University of Philippines Diliman Department of Chemical Engineering University of Philippines Diliman

The adsorption of Mn2＋ onto immobilized Mn-oxide and Fe-oxide adsorbent such as manganese oxide-coated sand 1 （MOCS1）, manganese oxide-coated sand2 （MOCS2）, iron oxide-coated sand2 （IOCS2）, and manganese and iron oxide-coated sand （MIOCS）was investigated. The effects of pH （5.5 to 8.0） and temperature （25 to45°C） on the equilibrium capacitywere examined. Equilibrium studies showed that there is a good fitwith both Freundlich and Langmuir isotherm,which indicates surface heterogeneity and monolayer adsorption of the adsorbents. Kineticdata showed high correlationwith the pseudo second-order model,which signifies a chemisorption-controlled mechanism. The activation energies, activation parameters （ΔG＊,ΔH＊,ΔS＊）, and thermodynamic parameters （ΔG0 , ΔH0 , ΔS0 ） confirmed that adsorptionwith MIOCSwas endothermic and more spontaneous at higher temperaturewhile an opposite trendwas observed for the other adsorbents. Thermodynamic studies showed that adsorption involved formation of activated complex,where MOCS1 and MIOCS follow a physical-chemical mechanism,while MOCS2 and IOCS2 follows purely chemical mechanism.

关键词： activation energy iron oxide kinetics manganese oxide thermodynamics