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Grazing Pressure and Plant Functional types in Puna Highlands,Northwestern Argentina

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Phyton-International Journal of Experimental Botany 2024年第5期93卷 1067-1080页

作者： Quiroga Mendiola Mariana tálamo Andrés IPAF NOA—INtA(National Institute for Agricultural technology) Posta de HornillosJujuy4622Argentina Facultad de Ciencias Naturales Universidad Nacional de SaltaSalta4400Argentina Instituto de Bio y Geociencias del NOA(IBIGEO) UNSa-CONICET.Laboratorio de Ecología Aplicada a la Conservación(LEAC)Facultad de Ciencias NaturalesUniversidad Nacional de SaltaSalta4400Argentina Maestría en Gestión Ambiental Escuela de NegociosUniversidad Católica de Salta(UCASAL)Salta4400Argentina

the Puna grass.ands support grazing systems that produce meat and wool in multi-species herds,especially from llama(Lama glama)and ***,it is yet unknown whether grazing pressure can modify grass.and structure and Plant Functional types diversity and cover in Puna *** analyzed the relationship between grazing pressure and Plant Functional types by comparing transects located near stockyards(high grazing pressure)and far from them(low pressure)and by evaluating the relationship between the Plant Functional types cover to a Grazing Pressure Index(GPI).this index incorporates the heterogeneity of traditional pastoral *** two ecological sites(Ciénego and tolar),we sampled paired transects(near-far).Plots near and far from corrals were similar in all the variables measured except for plots in tolar,which tend to have higher total cover,possibly due to fecal fertilization near ***,we recorded an increase in total cover and grass cover at higher GPI in Ciénego,while in tolar we found lower values of total cover and herbaceous dicotyledonous cover at intermediate intensities of *** only negative relationship found was the cover of clonal and non-clonal shrubs,possibly explained by the greater use of these shrubs.as firewood near *** summary,our study does not show important changes in Plant Functional types.as.a function of grazing pressure in the studied grass.ands probably because grazing pressure is diluted or diminished when livestock rotates in different areas.and grazing durations ***,the long grazing history with which the Puna has evolved could also contribute to the co-structuration between native vegetation and livestock farming.

关键词： Natural grass.ands Puna herbivory ecological perturbation

On variance of exponents for isolated surface singularities with modality ≤ 2 In Memory of Professor Philip Wagreich

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science China Mathematics 2014年第1期57卷 31-41页

作者： YAU stephen s.t. ZUO HuaiQing Department of Mathematical science Tsinghua University Mathematical sciences Center Tsinghua University

Using the theory of the mixed Hodge structure one can define a notion of exponents of a *** 2000,Hertling proposed a conjecture about the variance of the exponents of a ***,we prove that the Hertling conjecture is tru... 详细信息

关键词： singularities modality exponents

Intrusion Detection Using Federated Learning for Computing

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Computer systems science & Engineering 2023年第5期45卷 1295-1308页

作者： R.s.aashmi t.Jaya Department of Computer science and Engineering CSI Institute of TechnologyThovalaiTamilnaduIndia Department of Electronic Communications.and Engineering CSI Institute of TechnologyThovalaiTamilnaduIndia

the integration of clusters,grids,clouds,edges.and other computing platforms result in contemporary technology of jungle *** novel technique has the aptitude to tackle high performance computation systems.and it manages the usage of all computing platforms.at a *** learning is.a collaborative machine learning approach without centralized training *** proposed system effectively detects the intrusion attack without human intervention and subsequently detects.anomalous deviations in device communication behavior,potentially caused by malicious.adversaries.and it can emerge with new and unknown *** main objective is to learn overall behavior of an intruder while performing attacks to the assumed target ***,the updated system model is send to the centralized server in jungle computing,to detect their *** learning greatly helps the machine to study the type of attack from each device and this technique paves.a way to complete dominion over all malicious *** our proposed work,we have implemented an intrusion detection system that has high accuracy,low False Positive Rate(FPR)s.alable,and versatile for the jungle computing *** execution time taken to complete a round is less than two seconds,with an accuracy rate of 96%.

关键词： Jungle computing high performance computation federated learning false positive rate intrusion detection system(IDs)

Remote sensing and GIs.application in the Detection of Environmental Degradation Indicators

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Geo-s.atial Information science 2011年第1期14卷 39-47页

作者： HadeelA s Mushtak t Jabbar CHEN Xiaoling s.ate Key Laboratory of Information Engineering in surveying Mapping and Remote Sensing Wuhan University 129 Luoyu Road Wuhan 430079. China Department of soil and Water College of Agriculture University of Basrah (Iraq) Key Laboratory of Poyang Lake Wetland and Watershed Res.arch Ministry of Education Jiangxi Normal UniversityNanchang 330022. China

the main aim of this res.arch is to highlight the environment change indicators during the last 20 years in a representative area of the southern part of Iraq （Bas.ah Province was taken as.a case） to unders.and the main causes which led to widespread environment degradation phenomena using a 1：250000 mapping s.ale. Remote sensing and GIs＇s software were used to classify Landsat tM in 1990 and Landsat EtM＋ in 2003 imagery into five land use and land cover （LULC） classes： vegetation land, sand land, urban area, unused land, and water bodies. supervised classification and Normalized Difference Vegetation Index （NDVI）, Normalized Difference Build-up Index （NDBI）, Normalized Difference Water Index （NDWI）, Normalized Difference salinity Index （NDsI）, and topsoil Grain size Index （GsI） were adopted in this res.arch and used respectively to retrieve its class boundary. the results showed a clear deterioration in vegetative cover （514.9 km2） and an increase of sand dune accumulations （438.6 km2）, accounting for 10.1, and 10.6 percent, respectively, of the total study area. In addition, a decrease in the water bodies＇ area was detected （228.9 kin2）. sand area accumulations had increased in the total study area, with an annual increasing expansion rate of （33.7 km2 · yr^-1） during the thirteen years covered by the study. It is therefore imperative that Iraqi government undertake a series of prudent actions now that will enable to be in the best possible position when the current environmental crisis ultimately passes.

关键词： environment degradation LULC Rs GIs classification indices

Combined signal Processing Based techniques.and Feed Forward Neural Networks for Pathological Voice Detection and Classification

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sound & Vibration 2021年第2期55卷 141-161页

作者： t.Jayasree s.Emerald shia Department of Electronics.and Communication Engineering Government College of EngineeringTamil Nadu629007India Department of Electronics.and Communication Engineering Cape Institute of TechnologyTamil Nadu629001India

this paper presents the pathological voice detection and classification techniques using signal processing based methodologies.and Feed Forward Neural Networks(FFNN).the important pathological voices such as.autism spectrum Disorder(AsD)and Down syndrome(Ds.are considered for *** pathological voices.are known to manifest in different ways in the speech of children and ***,it is possible to discriminate AsD and Ds children from normal ones using the acoustic features extracted from the speech of these *** important attributes hidden in the pathological voices.are extracted by applying different signal processing *** this work,three group of feature vectors such as perturbation measures,noise parameters.and spectral-cepstral modeling are derived from the *** detection and classification is done by means of Feed For-ward Neural Network(FFNN)classifier trained with s.aled Conjugate Gradient(sCG)*** performance of the network is evaluated by finding various performance metrics.and the the experimental results clearly demonstrate that the proposed method gives better performance compared with other methods discussed in the literature.

关键词： Autism spectrum disorder down syndrome feed forward neural network perturbation measures noise parameters cepstral features

Grey Wolf Optimizer Based Deep Learning for Pancreatic Nodule Detection

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Intelligent Automation & soft Computing 2023年第4期36卷 97-112页

作者： t.thanya s.Wilfred Franklin Department of ECE Universal College of Engineering and Technology627117Tamil NaduIndia Department of ECE CSI Institute of TechnologyThovalai629302Tamil NaduIndia

At an early point,the diagnosis of pancreatic cancer is mediocre,since the radiologist is skill deﬁ*** threats have been posed due to the above reasons,hence became mandatory for the need of skilled ***,it also became a time-consuming *** the need for automated diagnosis became *** order to identify the tumor accurately,this res.arch pro-poses.a novel Convolution Neural Network(CNN)based superior image classi-ﬁcation *** proposed deep learning classiﬁcation strategy has.a precision of 97.7%,allowing for more effective usage of the automatically exe-cuted feature extraction technique to diagnose cancer *** analysis with CNN-Grey Wolf Optimization(GWO)is carried based on varied testing and training *** suggested study is carried out at a rate of 90%–10%,80%–20%,and 70%–30%,indicating the robustness of the proposed res.arch *** show that the suggested method is ***-CNN is reli-able and accurate relative to other detection methods.available in the literatures.

关键词： Convolution neural network deep learning technique feature extraction grey wolf optimizer

Detecting and Preventing of Attacks in Cloud Computing Using Hybrid Algorithm

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Intelligent Automation & soft Computing 2023年第1期35卷 79-95页

作者： R.s.aashmi t.Jaya Department of Computer science and Engineering CSI Institute of TechnologyThovalaiIndia Department of Electronic Communications.and Engineering CSI Institute of TechnologyThovalaiIndia

Cloud computing is the technology that is currently used to provide users with infrastructure,platform,and software services *** this system,Platform as.a service(Paas)offers.a medium headed for a web development platform that uniformly distributes the requests.and *** using Denial of service(Dos.and Distributed Denial of service(DDos.attacks.abruptly interrupt these *** though several existing methods like signature-based,s.atistical anomaly-based,and s.ateful protocol analysis.are available,they are not sufficient enough to get rid of Denial of service(Dos.and Distributed Denial of service(DDos.attacks.and hence there is.a great need for a definite *** this issue,we propose an improved hybrid algorithm which is.a combination of Multivariate correlation analysis,spearman coefficient,and mitigation *** can easily differentiate common traffic and attack *** only that,it greatly helps the network to distribute the resources only for authenticated *** effects of comparing with the normalized information have shown an extra encouraging detection accuracy of 99%for the numerous Dos.attack as well as DDos.attacks.

关键词： Hybrid algorithm(HA) distributed denial of service(DDos) denial of service(Dos) platform as.a service(Paas) infrastructure as.a service(Iaas) software as.a service(s.as)

Computer simulation of two Component Dense Plas.a by Molecular Dynamics Method

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Communications in Computational Physics 2014年第4期15卷 1159-1166页

作者： Zh.A.Moldabekov t.s.Ramazanov IEtP Al-Farabi Kazakh National University71 Al Farabi av.Almaty050040 Kazakhstan

In the present work two component dense semiclassical plas.a of protons.and electrons is *** and electrodynamic properties of the plas.a by molecular dynamic simulation are *** these purposes semiclassical interparticle potential which takes into account quantum mechanical diffraction and symmetry effects is *** considered range of density of plas.a is n=1022cm^(−3)to n=1024cm^(−3).Fluctuations.and dynamic dielectric functions were calculated using velocity autocorrelation functions.

关键词： Molecular dynamic simulation dense semiclassical plas.a semiclassical interparticle potential

silicothermic reduction of MgO using diode laser:Experimental and kinetic study

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Journal of Magnesium and Alloys 2017年第4期5卷 430-438页

作者： M.s.Mahmoud t.Yabe Chemical Engineering Department Faculty of EngineeringMinia UniversityMinia61516Egypt Engineering Department Collage of Applied ScienceSuhar311Oman Mechanical Engineering Department Tokyo Institute of Technology2-12-1 O-okayamaMeguroTokyo 152-8552Japan Energy Genesis Cycle 405 East Wing3-2-1 SakadoTakatsukuKawasaki CityKanagawa 213-0012Japan

As.a step toward realizing magnesium civilization,which needs.a sus.ainable Mg production process,the reduction of MgO to Mg has been *** diode laser(DDL)produces high power and continuous beam in tiny *** laser with energy density up to 83*10^(5) W/cm^(2) is focused on MgO/si target inside the vacuum chamber,creating the high temperature zone,which stimulates the Mg production *** vapor is collected on the copper plate;and then,analyzed chemically in terms of Mg production *** largest reduction and energy efficiencies in Ar atmosphere were 41%and 15.3 mg kJ^(−1),while in the vacuum,13.5%and 15.8 mg kJ^(−1) were *** reactions of MgO and si have been *** revealed that the MgO reduction with si proceeds.as heterogeneous *** rate of reaction of si with MgO is faster than the rate of MgO evaporation and Mg vapor deposition.

关键词： Diode laser Magnesium oxide Magnesium Reduction silicon