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When LoRa meets distributed machine learning to optimize the network connectivity for green and intelligent transportation system

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Green Energy and Intelligent Transportation 2024年第3期3卷 24-41页

作者： malak Abid Ali Khan Hongbin ma Arshad Farhad Asad mujeeb Imran Khan mirani muhammad Hamza National Key Lab of Autonomous Intelligent Unmanned Systems School of AutomationBeijing Institute of TechnologyBeijing 100081China Department of Computer Science Namal UniversityPakistan Department of electrical Engineering Tsinghua UniversityBeijing 100084China Faculty of Information Technology Beijing University of TechnologyBeijing 100124China School of mechanical Engineering Beijing Institute of TechnologyBeijing 100081China

LoRa technology contributes to green energy by enabling efficient,long-range communication for the Internet of Things(IoT).This paper addresses the challenges related to coverage range in outdoor monitoring systems utilizing LoRa,where the network performance is affected by the density of gateways(GWs)and end devices(eds),as well as environmental *** mitigate interference,data throughput losses,and high-power consumption,the proposed spreading factor(SF)and hybrid(data rate|SF)models dynamically adjust the transmission *** orchestration of concurrent data modifications within the network server(NS)is crucial for uninterrupted communication between GWs and eds,especially in monitoring electric vehicle(EV)stations to reduce traffic congestion and *** K-means and density-based spatial clustering of applications with noise(DBSCAN)algorithms optimizes ed allocation,averts data congestion,and improves the signal-tointerference noise ratio(SINR).These methods ensure seamless information reception by meticulously allocated eds across various GW *** estimate the free-space losses(FSL),a log-distance path loss model(log-PL)is *** various bandwidths(BWs),bidirectional communications,and duty cycles(DCs)helps to prevent saturation,thus prolonging the operational lifespan of *** findings reveal a notable packet rejection rate(PRR)of 0%for the DBSCAN(hybrid model).In contrast,the K-means exhibits a PRR ranging from 5%(hybrid model)to 35.29%(SF model)for the ten GWs ***,the network saturation is reduced to 10.185%and 9.503%,respectively,highlighting an improvement in the average efficiency of slotted ALOHA(91.1%)and pure ALOHA(90.7%).These enhancements increase the lifespan of eds to 15,465.27 days.

关键词： DBSCAN Green transportation Hybrid model Intelligent transportation K-means

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Identi?cation and Analysis of the Intermediates from Photodegradation of 3,3′-diamino-4,4′-azoxyfurazan (DAAF)by SERS and HPLC–mS/mS

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Journal of Analysis and Testing 2024年第3期8卷 351-360页

作者： Qi Wu Zhenqi Zhang Wenxu Zheng Juan Li Nan ma Rui Li Bo Yang Weimiao Wang Xiaodong Li meikun Fan Faculty of Geosciences and Environmental Engineering Southwest Jiaotong University Institute of Chemical materials China Academy of Engineering Physics College of materials and Energy South China Agricultural University Southwest University of Science and Technology

Understanding the structural changes and degradation mechanisms of organic pollutants is critical in environmental *** this work, a xenon lamp was used as an analog light source to simulate the eff ect of sunlight on 3,3′-diamino-4,4′-azoxyfurazan (DAAF) in aqueous solution. Combining high-performance liquid chromatography coupled with tandem mass spectrometry (HPLC–mS/mS), surface-enhanced Raman spectroscopy (SERS) with density functional theory (DFT), the degradation intermediates and mechanisms of DAAF were investigated. The sequential breakdown of the–NH 2and–O–N=bonds, followed by the removal of atomic O from–N=N(O)–, was emphasized and investigated using two-dimensional correlation spectroscopy (2D-COS) and SERS spectra. Three intermediates with mass-to-charge ratios (m/z) 181, 251 and180 were identifi ed and characterized by integrating experimental SERS data with DFT-calculated Raman spectra based on structures hypothesized from mS spectra. The fi ndings from HPLC–mS and SERS not only corroborate each other but also provide a foundation for a detailed examination of the DAAF degradation process.

关键词： DAAF High-performance liquid chromatography coupled with tandem mass spectrometry (HPLC–mS/mS) Photodegradation products Reaction pathways Surface-enhanced Raman spectroscopy (SERS)

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基于情境引擎的车载导航交互设计研究

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汽车工程 2024年第1期46卷 18-28页

作者：马钧柏玥同济大学汽车学院上海200092 同济大学设计创意学院上海200092

针对车载导航模式单一、无法根据情境差异动态改变交互策略导致用户体验不足的问题,本文提出了一种支持根据不同情境自适应车载导航交互策略的情境引擎模型。结合以用户为中心的设计流程(UCD)与情境感知理论,定义了汽车人机交互情境,并... 详细信息

针对车载导航模式单一、无法根据情境差异动态改变交互策略导致用户体验不足的问题,本文提出了一种支持根据不同情境自适应车载导航交互策略的情境引擎模型。结合以用户为中心的设计流程(UCD)与情境感知理论,定义了汽车人机交互情境,并通过对典型驾驶用户进行跟车调研,提取关键情境要素,阐述了导航情境下情境引擎模型的自适应交互策略及原理,将用户对不同信息的需求程度映射至交互表现层的详细程度。进行了贴合驾驶员不同需求层级的导航HmI信息框架梳理与组件设计,对两个典型导航使用情境进行了交互界面设计与分析。结果表明,情境引擎能对各驾驶情境下的驾驶员需求进行自适应交互,可为智能座舱驾驶交互体验的优化与研发提供借鉴。

关键词：人车交互车载导航情境感知界面设计

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Optimization of extraction process for total flavonoids of Sophorae Flos for the treatment of hyperlipidemia based on network pharmacology and molecular docking

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Journal of Polyphenols 2024年第3期6卷 117-129页

作者： Jiale mao Aijinxiu ma Lingling Wang Xu Zhao Faculty of Functional Food and Wine Shenyang Pharmaceutical UniversityShenyang 110016China

This study aimed to investigate the mechanism of action of Sophora Flos(SF)in the treatment of hyperlipidemia(HLP)using network pharmacology and molecular docking methods,and to optimize the extraction process of the predicted active *** STRING database was used for protein interaction analysis and PPI network construction via Cytoscape *** was employed for docking and *** extensive review of SF identifi ed 6 active ingredients,297 related objectives,84 disease objectives,and 57 total *** protein interaction and topology analysis,18 core targets were *** included 146 gene function entries(Pmpounds,mainly flavonoids,can modulate the expression of various proteins such as TNF,IL-6,IL-1β,PPARG,and TGFB1 to achieve therapeutic effects on *** network pharmacology and molecular docking results suggested that the active fl avonoids component in SF may be related to the treatment of ***,the orthogonal experiment method was used to optimize the extraction process of total fl avonoid from SF using ethanol refl ux extraction,based on a single factor *** effects of refl ux time,solid-liquid ratio,ethanol concentration,and other factors on the extraction of total fl avonoid from SF were *** optimum process conditions were refl ux time of 1.25 h,solid-liquid ratio of 1:15 g/mL and ethanol concentration of 60%.Using these conditions,the purity of total fl avonoid extracted from SF was 70.33±0.22%.

关键词： Sophorae Flos total flavonoid process optimization network pharmacology hyperlipidemia

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Geothermobarometry of Askaoun Pluton in Ouzellarh-Sirwa Promontory (Central Anti-Atlas;morocco)

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Open Journal of Geology 2012年第3期2卷 136-147页

作者： Abdeslam Toummite moha Ikenne el Hassane Beraaouz Applied Geology and Environmental Geology Laboratory Faculty of Sciences Ibn Zohr University Agadir Morocco

Rocks of the late Neoproterozoic Askaoun pluton (558 ± 2 ma) located in the Ouzellarh-Sirwa promontory (Anti-Atlas) include magmatic microgranular enclaves (mmEs) ranging from rounded to ovoid in shape, dark and fine grained and generally 5 to 10 cm in size, some reaching a size of 50 cm. They are composed of microdiorite, quartz microdiorite and micromonzodiorite, whereas the felsic host rocks comprise mainly quartz-diorite and amphibole-biotite granodiorite based on mineralogical compositions. The mineral assemblage is similar to those described in their hosting granitoids but with different proportions. In this study composition of minerals is used to describe the nature of the magma and estimate the pressure, temperature and oxygen fugacity at which Askaoun pluton is emplaced. Based on chemistry of biotite Askaoun pluton formed from calc-alkaline magma. Compositions of plagioclase (An5 - An29);hornblende (mg ≠= 0.59 - 0.65) and biotite (mg ≠= 0.49 - 0.55) of mmEs are slightly distinct or similar to those of host rocks (An7-40;hbl mg ≠= 0.64 - 0.69;Bi mg ≠= 0.49 - 0.50) which suggest partial to complete equilibration during mafic-felsic magma interaction. The coexisting hornblende and plagioclase (hornblende-plagioclase thermometry), Al content in hornblende (aluminum-in-hornblende barometry) and the assemblage titanite-magnetite-quartz were used to constrain the P, T and fO2 during the crystallization of the parent magmas. The Askaoun pluton was emplaced at temperature ca. 504°C - 633°C and at pressure ca. 0.9 - 4.66 ± 0.6 Kbars (average depth = 6.5 km) from a highly oxidized magma (log fO2 = ?24.8 to ?19.2).

关键词： Askaoun Pluton mmEs Hornblende Thermobarometry Ouzellargh-Sirwa Promontory Anti-Atlas morocco

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Unconventional Organic Low-Dimensional Crystals:Diversity and Potential Applications

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CCS Chemistry 2024年第7期6卷 1628-1653页

作者： Jin Feng mao Sun Ying-Xin ma Zhen-Yu Geng Chuan-Zeng Wang Shu-Ping Zhuo Shu-Hai Chen Hong-Tao Lin Xue-Dong Wang School of Chemistry and Chemical Engineering Shandong University of TechnologyZibo 255000 School of Resources and Environmental Engineering Shandong University of TechnologyZibo 255000 Institute of Functional Nano&Soft materials(FUNSOm) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123

Organic low-dimensional crystals have garnered escalating interests in the realms of miniaturized optoelectronics and integrated *** continual expansion of molecular systems and improvement in experimental conditions have given rise to unconventional organic low-dimensional crystals,which showcase a variety of appealing structure-dependent properties in the realm of organic semiconductors,owing to their adaptable physicochemical characteristics and exceptional optoelectronics ***,the development of unconventional low-dimensional crystals is filled with abundant possibilities due to their diverse application ***,we present a comprehensive overview of advancements in research on representative cases of unconventional low-dimensional organic crystals,using a systematic and rational structural ***,we have also discussed the existing challenges and future directions,aspiring to deepen understanding and encourage further research exploration in this field.

关键词： organic semiconductor crystal growth precise synthesis noncovalent interaction integrat-ed photonics

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基于BERT与生成对抗的民航陆空通话意图挖掘

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系统工程与电子技术 2024年第2期46卷 740-750页

作者：马兰孟诗君吴志军中国民航大学空中交通管理学院天津300300 中国民航大学电子信息与自动化学院天津300300 中国民航大学安全科学与工程学院天津300300

针对民航陆空通话领域语料难以获取、实体分布不均,以及意图信息提取中实体规范不足且准确率有待提升等问题,为了更好地提取陆空通话意图信息,提出一种融合本体的基于双向转换编码器(bidirectional encoder representations from transf... 详细信息

针对民航陆空通话领域语料难以获取、实体分布不均,以及意图信息提取中实体规范不足且准确率有待提升等问题,为了更好地提取陆空通话意图信息,提出一种融合本体的基于双向转换编码器(bidirectional encoder representations from transformers,BERT)与生成对抗网络(generative adversarial network,GAN)的陆空通话意图信息挖掘方法,并引入航班池信息对提取的部分信息进行校验修正,形成空中交通管制(air traffic control,ATC)系统可理解的结构化信息。首先,使用改进的GAN模型进行陆空通话智能文本生成,可有效进行数据增强,平衡各类实体信息分布并扩充数据集;然后,根据欧洲单一天空空中交通管理项目定义的本体规则进行意图的分类与标注;之后,通过BERT预训练模型生成字向量并解决一词多义问题,利用双向长短时记忆(bidirectional long short-term memory,BiLSTm)网络双向编码提取上下句语义特征,同时将该语义特征送入条件随机场(conditional random field,CRF)模型进行推理预测,学习标签的依赖关系并加以约束,以获取全局最优结果;最后,根据编辑距离(edit distance,ed)算法进行意图信息合理性校验与修正。对比实验结果表明,所提方法的宏平均F_(1)值达到了98.75%,在民航陆空通话数据集上的意图挖掘性能优于其他主流模型,为其加入数字化进程奠定了基础。

关键词：民航陆空通话信息提取生成对抗网络本体双向转换编码器

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Fritz Ackermann:a true and unequalled friend

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Geo-Spatial Information Science 2023年第2期26卷 151-152页

作者： ed mikhail Professor Emeritus&Former Head Geomatics Engineering Purdue UniversityWest LafayetteINUSA

I am certain that several other contributors to this memorial volume have expounded on the many attributes,both professional and personal,of Professor Fritz *** is unquestionable that he was a giant in our field,on whose shoulders current and future practitioners shall stand in order to keep the wheels of progress and advancement moving forward.

关键词： moving Fritz Ackermann

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Integrative herbal treatments of diabetes in Beni mellal region of morocco

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Journal of Integrative medicine 2019年第2期17卷 93-99页

作者： Hanae Naceiri mrabti Nidal Jaradat moha.ed Reda Kachmar Abdelaziz ed-Dra Abdelilah Ouahbi Yahia Cherrah moulay el Abbes Faouzi Faculty of medicine and Pharmacy Pharmacokinetic Team Laboratory of Pharmacology and Toxicology Université Mohammed V-Souissi Department of Pharmacy Faculty of Medicine and Health Sciences An-Najah National University Faculty of Sciences Health and Environment Laboratory Plant Protection Team Moulay Ismail University Faculty of Science Team of Microbiology and Health Laboratory of Chemistry-Biology Applied to the Environment Moulay Ismail University

Objectives: Diabetes is one of the most life-threatening chronic metabolic disorders and is considered a global health problem due to its prevalence and incidence. In morocco, several herbal preparations are utilized to treat this disease. For this reason, the current study aimed to identify and to collect data about the medicinal plants utilized in folk medicine for the treatment of diabetes in the Beni mellal region of ***: An ethnobotanical survey was carried out among 400 herbalists, competent villagers and traditional healers from the Beni mellal region through direct interviews using a semistructured ***: Forty-five medicinal plants belonging to 25 families were identified for their use in diabetes treatment. Interview results showed that the most frequently used plants were Olea europaea, Salvia officinalis, Allium sativum and Trigonella foenum-graecum, with a relative frequency of citation values of24.3%, 23.0%, 22.5% and 20.5%, respectively. moreover, in this study, the Fabaceae family was the most commonly reported plant family, and the leaves and roots were the most commonly used parts, for the treatment of ***: The Beni mellal region of morocco has an important floristic biodiversity of plants used to treat diabetes in traditional medicinal practice. This result provides a good database for pharmacological screenings in the search for plant-based antidiabetic medications.

关键词： Integrative medicine medicinal plants Diabetes Beni mellal morocco Questionnaire

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青海湖官方祭祀的历史沿革与神圣性确立

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西藏大学学报（社会科学版） 2024年第2期39卷 79-86页

作者：刘子平马成俊青海民族大学民族学与社会学学院青海西宁810007

青海湖官方祭祀是特殊的文化事象,它根植于中华土壤,并从四海祭祀中分离出来成为官方重要的祭祀活动。明清期间,经国家的社会治理后青海湖的神圣性得以确立并开始近祭会盟;民国时期,青海湖官方祭祀不断革新,使其成为环湖地区的特色文化... 详细信息

青海湖官方祭祀是特殊的文化事象,它根植于中华土壤,并从四海祭祀中分离出来成为官方重要的祭祀活动。明清期间,经国家的社会治理后青海湖的神圣性得以确立并开始近祭会盟;民国时期,青海湖官方祭祀不断革新,使其成为环湖地区的特色文化事象。梳理该文化事象历史,认为青海湖官方祭祀虽然是统治者维系统治权的工具,但在促进国家统一、边疆稳定、地方文化发展上发挥了重要作用;是国家意志建构地方文化中的典型;对我们当下如何建设共建、共享的精神文化空间有积极意义。

关键词：青海湖官方祭祀历史沿革神圣性文化功能

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