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Height-diameter models for King Boris fir(Abies borisii regis Mattf.) and Scots pine(Pinus sylvestris L.) in Olympus and Pieria Mountains, greece

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Journal of Mountain Science 2024年第5期21卷 1475-1490页

作者： Dimitrios I.RAPTIS Dimitra PAPADOPOULOU Angeliki PSARRA Athanasios A.FALLIAS aristides g.tsitsanis Vassiliki KAZANA Renewable Natural Resource Management and Bioeconomy Laboratory Department of Forest and Natural Environment SciencesInternational Hellenic University66100 DramaGreece

In forest science and practice, the total tree height is one of the basic morphometric attributes at the tree level and it has been closely linked with important stand attributes. In the current research, sixteen nonlinear functions for height prediction were tested in terms of their fitting ability against samples of Abies borisii regis and Pinus sylvestris trees from mountainous forests in central greece. The fitting procedure was based on generalized nonlinear weighted regression. At the final stage, a five-quantile nonlinear height-diameter model was developed for both species through a quantile regression approach, to estimate the entire conditional distribution of tree height, enabling the evaluation of the diameter impact at various quantiles and providing a comprehensive understanding of the proposed relationship across the distribution. The results clearly showed that employing the diameter as the sole independent variable, the 3-parameter Hossfeld function and the 2-parameter N?slund function managed to explain approximately 84.0% and 81.7% of the total height variance in the case of King Boris fir and Scots pine species, respectively. Furthermore, the models exhibited low levels of error in both cases(2.310m for the fir and 3.004m for the pine), yielding unbiased predictions for both fir(-0.002m) and pine(-0.004m). Notably, all the required assumptions for homogeneity and normality of the associated residuals were achieved through the weighting procedure, while the quantile regression approach provided additional insights into the height-diameter allometry of the specific species. The proposed models can turn into valuable tools for operational forest management planning, particularly for wood production and conservation of mountainous forest ecosystems.

关键词： generalized nonlinear weighted regression Monte Carlo cross-validation Mountainous ecosystems Quantile regression Central greece

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Modular supervisory control for multi-floor manufacturing processes

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Control Theory and Technology 2023年第2期21卷 148-160页

作者： Fotis N.Koumboulis Dimitrios g.Fragkoulis aristides A.Michos Department of Digital Industry Technologies School of ScienceNational and Kapodistrian University of AthensEuripus Campus3400 Psahna EuboeaGreece Core Department National and Kapodistrian University of AthensEuripus Campus3400 Psahna EuboeaGreece

Due to space availability limitations and high land costs,there is an increasing development of multi-floor manufacturing(MFM)systems in urban and industrial *** problem of coordination in a multi-floor manufacturing process,in the Ramadge Wonham framework,is *** manufacturing chain of each floor and the elevator system are modeled in the form of finite deterministic *** models of the multi-floor manufacturing process are parametric with respect to the number of floors and the number of manufacturing machines on each *** coordination desired performance is formulated in the form of desired regular languages in analytic *** languages are realized by appropriate supervisors in the form of finite deterministic *** models of the supervisors are also parametric with respect to the number of floors and the number of manufacturing machines on each *** total control of the coordination of the multi-floor manufacturing process is accomplished via a modular supervisory control *** complexity of the supervisors as well as the complexity of the total modular supervisory architecture are determined in analytic forms with respect to the number of floors and the number of manufacturing machines on each *** special case of a two floor manufacturing process is presented as an illustrative example.

关键词： Manufacturing processes Discrete event systems Supervisory control Industry 4.0

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Sampling from a Mixture of Different groups of Coupons

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Acta Mathematica Sinica,English Series 2020年第12期36卷 1357-1383页

作者： aristides V.DOUMAS Vassilis g.PAPANICOLAOU Department of Mathematics National Technical University of AthensZografou Campus15780AthensGreece

A collector samples coupons with replacement from a pool containing g uniform groups of coupons,where"uniform group"means that all coupons in the group are equally likely to occur(while coupons of different groups have different probabilities to occur).For each j=1,...,g,let Tj be the number of trials needed to detect group j,namely to collect all Mj coupons belonging to it at least *** first derive formulas for the probabilities P{T1g}and P{T1=∧^gj=1Tj}.After that,without severe loss of generality,we restrict ourselves to the case g=2 and compute the asymptotics of P{T1grows to infinity in a certain ***,we focus on T:=T1∨T2,*** number of trials needed to collect all coupons of the pool(at least once),and determine the asymptotics of E[T]and V[T],as well as the limiting distribution of T(appropriately normalized)as the number of coupons becomes large.

关键词： Coupon collector problems urn problems asymptotics limiting distribution gumbel distribution

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Erratum to:Modular supervisory control for multi-floor manufacturing processes

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Control Theory and Technology 2023年第4期21卷 612-612页

作者： Fotis N.Koumboulis Dimitrios g.Fragkoulis aristides A.Michos Department of Digital Industry Technologies School of ScienceNational and Kapodistrian University of AthensEuripus Campus3400Psahna EuboeaGreece Core Department National and Kapodistrian University of AthensEuripus Campus3400Psahna EuboeaGreece

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License,which permits use,sharing,adaptation,distribution and reproduction in any medium or format,as long as you give appropriate credit to the original author(s)and the source,provide a link to the Creative Commons licence,and indicate if changes were *** images or other third party material in this article are included in the article's Creative Commons licence,unless indicated otherwise in a credit line to the material.

关键词： Creative app floor

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Experimental obstructive jaundice alters claudin-4 expression in intestinal mucosa: Effect of bombesin and neurotensin

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World Journal of gastroenterology 2006年第21期12卷 3410-3415页

作者： Stelios F Assimakopoulos Constantine E Vagianos aristides S Charonis Ilias H Alexandris Iris Spiliopoulou Konstantinos C Thomopoulos Vassiliki N Nikolopoulou Chrisoula D Scopa Department of Internal Medicine School of Medicine University of PatrasPatrasGreece Department of Surgery School of Medicine University of PatrasPatrasGreece Section of Histology Center for Basic Research Foundation of Biomedical Research of the Academy of AthensAthensGreece Department of Microbiology School of Medicine University of PatrasPatrasGreece Department of Internal Medicine Division of gastroenterology School of MedicineUniversity of PatrasPatrasGreece Department of Pathology School of Medicine University of PatrasPatrasGreece

瞄准：调查试验性的妨碍的黄疸和外长的 bombesin 和 neurotensin (NT )(BBS ) 的影响紧密的连接(TJ ) 的表示上的管理在老鼠的肠上皮的蛋白质 claudin-4。方法：四十只男 Wistar 老鼠随机被划分成五个组：我 = 控制， II = 假冒操作， ... 详细信息

瞄准：调查试验性的妨碍的黄疸和外长的 bombesin 和 neurotensin (NT )(BBS ) 的影响紧密的连接(TJ ) 的表示上的管理在老鼠的肠上皮的蛋白质 claudin-4。方法：四十只男 Wistar 老鼠随机被划分成五个组：我 = 控制， II = 假冒操作， III = 胆汁管结扎(BDL ) ， IV = BDL+BBS (30 microg/kg 每 d ) ， V = BDL+NT (300 microg/kg 每 d ) 。在 d 的实验的结束 10，内毒素在门和大动脉的血被测量。终端回肠的织物节组织学地被检验并且免疫组织化学地为在肠上皮的 claudin-4 表示的评估。结果：妨碍的黄疸导致了重要的门和大动脉的 endotoxemia 表明的肠的障碍失败。Claudin-4 表示显著地被增加在上面在 jaundiced 老鼠的第三根绒毛并且一起来它的侧面的分发的规定被注意。BBS 或 NT 的管理恢复了 claudin-4 表示到控制状态并且显著地减少了门和大动脉的 endotoxemia。结论：在肠上皮的试验性的妨碍的黄疸增加 claudin-4 表示，它可以是贡献粘膜障碍的混乱的一个关键因素。毁坏规章的肽 BBS， NT 能阻止这扇改变和还原剂门和全身的 endotoxemia。

关键词：阻塞性黄疸肠黏膜基因表达神经加压素

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