Science topic

# Trees - Science topic

Woody, usually tall, perennial higher plants (Angiosperms, Gymnosperms, and some Pterophyta) having usually a main stem and numerous branches.

Publications related to Trees (10,000)

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A signed product cordial labeling of graph with vertex set is a function ∶ () → {− , } such that each edge is assigned the label () (), the number of vertices with label − and the number of vertices with label differs by at most and the number of edges with label − and the number of edges with label differs by at most. A graph that admits signed pr...

Objetivo: analisar a custo-efetividade e calcular a razão de custoefetividade incremental do tratamento compressivo multicamadas em relação ao inelástico (bota de Unna e curto estiramento) de acordo com a literatura atual. Método: estudo quantitativo sobre custo-efetividade por meio de modelagem com auxílio do software TreeAge® para a construção da...

Monte Carlo Tree Search is a widely acknowledged algorithm with video games being a common application. While MCTS has seen various enhancements, its integration with temporal difference learning (TD learning) in complex search environments still has interesting research potential. This paper introduces a novel method, Conv-AE+FA, merging convoluti...

Versión en alta resolución / high-resolution version: https://www.dropbox.com/scl/fo/kwc3erumfs3nqu3z061e3/h?rlkey=477vijhlp3tnd1oksimawapkg&dl=0

Stem profile modeling is crucial in the forestry sector, particularly for commercially valuable species like teak (Tectona grandis Linn F.), whose value depends on its stem dimensions, heartwood proportion, and age. We proposed a nonlinear mixed-effect model to describe the evolution of the stem and heartwood profiles of clonal teak trees with ages...

In this paper, we propose a variant of the survivable network design problem, where subgraphs are given flow constraints, which represent upper bounds on weights of outgoing edges with endpoints that belong to vertex subsets of these subgraphs. The general problem of verifying whether the weights of outgoing edges of any vertex subset (i.e. a graph...

The fundamental intent of the thesis dealing with the effect of spiral grain on the dimensional stability of hornbeam-sawn timber is to describe the shape changes caused by fiber spiral grain based on a trunk with spiral and vice versa non-spiral growth. Furthermore, the thesis thoroughly discusses the problem of the change of wood fiber orientatio...

The study primarily investigates the synchronization properties of repeated words of length \( k \) in deterministic finite automata of size \( n \). It leverages \( w \)-trees to understand how and why these short synchronizing words work efficiently. Experimental results support the theoretical findings on \( w \)-tree heights and their role in a...

Atlas of breeding and wintering birds in Treviso (2010-2012)
An atlas of birds breeding and wintering in the municipalty of Treviso for two-year period 2010-2012 was published.
73 breeding species and 78 wintering species were recorded. Species of conservation interest included Tufted Duck
Aythya fuligula, Little Bittern Ixobrychus minutus, Wryne...

A Flocking obstacle avoidance algorithm based on the extensive game with perfect information is proposed for the blockage problem of UAV swarm in front of multi‐narrow type obstacles. The two UAVs closest to the target are selected as participants of the game, and the game tree is defined to determine the combination of the motion strategies of the...

This research was carried out to study the morphological charachteristics of the tree kanguroo in the Arfak Mountains, especially in the village of Mokwam and Umbui. Observation was done on the qualitative and quantitative charachters. Four kanguroo tree was observed during the study.

One of the most enigmatic of the miracles of Jesus is the cursing of the barren fig tree (Mark 11:12-14, 20-25). Jesus' action has led commentators to regard it as secondary or legendary probably because of Mark's note that it was not a season of figs (v 13). The accounts of Matthew and Mark differ considerably in regard to the sequence of events s...

La gestión efectiva de la cartera de préstamos impagos es crucial para mantener la estabilidad y rentabilidad, especialmente en el ámbito financiero, esto destaca la importancia estratégica de una gestión rigurosa de los préstamos en mora para la salud financiera de las instituciones. Por la criticidad que adjudica la temática, se plantea como obje...

The Connectivity Augmentation Problem (CAP) together with a well-known special case thereof known as the Tree Augmentation Problem (TAP) are among the most basic Network Design problems. There has been a surge of interest recently to find approximation algorithms with guarantees below 2 for both TAP and CAP, culminating in the currently best approx...

Baden-Württemberg heute. Zwei Wurzeln-ein Baum. Hrsg. v. Kurt Gerhardt. Stuttgart: Theiss 1988. 204 S., 135 Ill., Schaubilder u. Tab.

The main focus of this contribution is on the harmonic Bergman spaces $\mathcal B^p_\alpha$ on the $q$-homogeneous tree $\mathfrak X_q$ endowed with a family of measures $\sigma_\alpha$ that are constant on the horocycles tangent to a fixed boundary point and turn out to be doubling with respect to the corresponding horocyclic Gromov distance. A ce...

This study aimed at comparing the vegetation that emerged from the soil seed bank (SB) of the sector with that of standing vegetation (SV) to investigate if the Erin sector can eventually self-regenerate if the reserve is removed by anthropogenic activity. Twenty sample plots of 20 m-by-20 quadrats were randomly selected within the biosphere reserv...

Agroforestry is a conventional method of land use that could help to address agricultural environmental issues. In order to take advantage of the ensuing ecological and economic interactions, agroforestry is the technique of consciously integrating woody vegetation (trees or shrubs) with crop and/or animal systems. According to recent studies, the...

The well‐known matrix‐generated tree structure for Pythagorean triplets is extended to the primitive solutions of the Diophantine equation x 2 + d y 2 − z 2 = 0 where d is a positive square‐free integer. The proof is based on a parametrization of these solutions as well as on a dual version of the Fermat’s method of descent.

COLE TCH (2023) MALPIGHIALES Phylogeny Poster (MalpighPP) © Cole 2023 (CC-BY) • hypothetical tree based on molecular phylogenetic data, topology largely uncertain (see Cai et al. 2021) • order of 36 families, ca. 716 genera, ca. 16,000 species • branch lengths deliberate, not expressing actual time scale • characteristics of families and genera see...

The process of rainfall interception by tree organs is crucial in mitigating the impact of intense rainfall on urban drainage systems, particularly in the context of climate change. this study selected ten commonly found tree species in Shanghai. Main parts of trees, including leaves, branches, and bark, were collected to analyze their ability to i...

This study analyzes pre-school children’s mental representations of their idea of a garden, before and after implementing an educational project. A total of 39 and 43 pairs of drawings (pre-post) are analyzed in children aged four and five years, respectively, using two methods: (1) a quantitative approach, based on counting the frequency with whic...

This paper focuses on applying reinforcement learning methods to solve the game Sokoban. This game is a popular puzzle, relatively easy for humans to solve. However, it poses a significant challenge for computer algorithms due to the irreversible nature of certain moves. To predict which actions will lead to such undesirable states is often difficu...

Günlük hayatta birden fazla dili kullanabilme becerisine sahip bireyler iki dilli olarak adlandırılmaktadır. Günümüz eğitim yaklaşımı bireyi merkeze alarak bireyin kişisel gelişimini ve bireysel farklılıklarını daha çok dikkate alan bir anlayışla hareket etmektedir. Eğitim, okuduğunu anlayan, öğrendiklerini informal yaşamında kullanan bireyleri hed...

The multifaceted nature and swift progression of Amyotrophic Lateral Sclerosis (ALS) pose considerable challenges to our understanding of its evolution and interplay with comorbid conditions. This study seeks to elucidate the temporal dynamics of ALS progression and its interaction with associated diseases. We employed a principal tree-based model...

Isolation and characterization of endophytic bacteria and fungi from trees

Pensar as diferentes formas de existência no digital é um exercício de articulação dos agentes tecnobiodiversos do seu meio. Propomos um pensamento ecológico que engloba o pensamento técnico através da criação poética. Assim, discutimos a instalação interativa “monocultura, monoténica, mononatura” no contexto de uma investigação ontológica da tecno...

Forest structure is a key element for assessing the ecological functions and services in forest ecosystems, which can be described and quantified using forest structural indices. This research was conducted with the aim of quantifying the structure of pure beech forests using spatial indices of forest structure in the Hyrcanian forests of Iran. For...

Build a special identical equation, use its calculation characters to prove and search for solution of any odd converging to 1 equation through (*3+1)/2^k operation, change the operation to (*3+2^m-1)/2^k, get a solution for this equation. Furthermore, analysis the sequences produced by iteration calculation during the procedure of searching for so...

We address complex reasoning tasks in assumption-based argumentation (ABA) by developing dynamic programming algorithms based on tree-decompositions. As one of the prominent approaches in computational argumentation, our focus is on NP-hard reasoning in ABA. We utilize tree-width, a structural measure describing closeness to trees, for an approach...

Early detection and prompt response are key factors in the eradication of ‘huanglongbing’ (HLB) in California. Currently, qPCR testing of leaf tissue guides the removal of infected trees. However, because of the uneven distribution of ‘Candidatus Liberibacter asiaticus’ (CLas) in an infected tree and asymptomatic infection, selecting the best leave...

The traditional method of characterizing forests through labor-intensive field inventories is expensive. This study presents initial findings from an experiment that utilized aerial photogrammetry with drones to obtain precise tree height estimations. A drone survey was conducted in a 34-hectare area, and field measurements of tree heights were als...

Bauhinia purpurea | Orchid Tree | 洋紫荊 | Arbre Aux Orchidées | Pata de Vaca

Harvesters and forwarders used in mechanized thinning operations, requires careful planning to ensure high productivity and efficiency. Factors like tree volume, stand density, thinning intensity, and the number of products affect productivity, operations costs, and the products commercial value. These factors are analyzed through statistical model...

A Novel Approach to Prime Number Sequences and the Riemann Zeta Function
In this preprint, we introduce an innovative perspective on prime number sequences through the concept of $U_k(n)$. These sequences unveil a hierarchical structure in natural numbers, providing deeper insights into prime distribution. We establish connections between $U_k(n)$...

This paper presents the design and implementation of signed-unsigned Modified Booth Encoding (SUMBE) multiplier. The present Modified Booth Encoding (MBE) multiplier and the Baugh-Wooley multiplier perform multiplication operation on signed numbers only. Therefore, this paper presents the design and implementation of SUMBE multiplier. The modified...

Bauhinia variegata | Orchid Tree | 宮粉羊蹄甲 | Arbre à Fleurs d'Orchidées | Pata de Vaca Asiática

Navel oranges are considered one of the most important fruit crops in Egypt. The
fruitful area reached about 146 thousands feddan (feddan =4200m2) in 2021,
representing about 49% of the total planted area of oranges. Egyptian citrus fruits
also came at the forefront of Egyptian exports, as the total agricultural exports of
citrus fruits amounted to...

Introdução: Modelos para identificação de padrões usam correlações para predizer desfechos de doenças. Se inseri nesse tema a Tuberculose (TB), uma doença infecciosa e transmissível, e uma das principais causas de morbimortalidade. Em 2020, no mundo, cerca de 9,9 milhões de pessoas adoeceu com TB, e 1,3 milhão foram a óbito. Objetivo: Nesse trabalh...

The Malaysian Bird Report is a publication that features a variety of reports on bird behaviour, breeding, conservation efforts and local research on birds. Additionally there are articles on Ornithological Controversies, Bird Identification, Birdwatching Hotspots, Bird Trees and Tips & Tools to Aid Birdwatching & Bird Photography. It is freely ava...

The present work conducts a comparative analysis of the forest response to two selective logging criteria, applied three decades ago in the Guaraní Multiple Use Reserve, located in the northeast of the Argentine Republic. In the area corresponding to Section I, two selective logging criteria were implemented. A minimum diameter per species approach...

We consider the counting problem of the number of leaf-labeled increasing trees, where internal nodes may have an arbitrary number of descendants. The set of all such trees is a discrete representation of the genealogies obtained under certain population-genetical models such as multiple-merger coalescents. While the combinatorics of the binary tre...

O presente trabalho foi executado em um povoamento de Tectona grandis L.f. localizado no município de Glória D’Oeste, estado de Mato Grosso. O objetivo do trabalho é comparar a acuracidade das estimativas dos diâmetros para o conjunto total dos dados, com controle das classes de idade e comparar volumes parciais em diferentes alturas. Com isso, foi...

A grouting material composed of water glass and phosphoric acid was proposed aimed to the formation reinforcement problem during shield chamber opening. Then the gelation time of the material and the interfacial shear strength between the solidified grouting material and metal was analyzed. Finally the grouting material was applied in practical eng...

Silvopastorals are associations of trees and cattle that, due to their good behavior, spread from the tropics to temperate regions. However, there are few data for the Salado basin. In this region, a silvopastoral system was implemented using several clones of poplars and willows. Good results were obtained after successful planting, both in the yi...

In Italia, la consociazione tra alberi forestali, seminativi, colture orticole, prati, pascoli, alberi da frutto, olivi e vite hanno dato luogo a veri e propri paesaggi agricoli arborati, di particolare qualità anche estetica.
I sistemi agroforestali determinano un più efficiente uso delle risorse naturali rispetto a quelli monocolturali, tuttavia,...

An optimal network refers to a computer or communication network designed, configured, and managed to maximize efficiency, performance, and effectiveness while minimizing cost and resource utilization. In a network design and management context, optimal typically implies achieving the best possible outcomes between various factors. This research in...

The CDF Collaboration recently reported a new precise measurement of the W-boson mass MW with a central value significantly larger than the SM prediction. We explore the effects of including this new measurement on a fit of the Standard Model (SM) to electroweak precision data. We characterize the tension of this new measurement with the SM and exp...

Ant communities play an important role in a teak agroecosystem. However, ant diversity is affected by urbanization. The purpose of this study was to determine the diversity and composition of ants in teak plantations in urban and rural areas. This study was conducted in July 2022 at three plantations in two regencies (Gowa and Maros) and one city (...

We prove that a forest is cordial if and only if it does not have 4k+2 components and every vertex has odd-degree.

Peltophorum pterocarpum | Yellow Flame Tree | 雙翼豆 (盾柱木) | Flamboyant Jaune |

Safety is the foundation of all production activities. In order to further enhance the safety of high pressure water jet technology in the production process, the fuzzy analysis method and the fault tree method are used to analyze the risk factors in this paper. the risk factors existing in the personnel, equipment and environment of water jet in c...

This study aimed to (1) characterized sago palms with different trunk formation times; (2) studied the growth characteristics related to the diameter of the sago trunk. This research was conducted at the Sago Cultivation Experimental Site located in Pengkajoang Village, West Malangke District, North Luwu Regency. The growth characters studied were...

Il Sito di Bonifica di Interesse Nazionale di Bussi sul Tirino comprende quattro macroaree discontinue, poste lungo la vallata del Fiume Pescara, per un’estensione compressiva di 235 ettari su una lunghezza di 9 Km, interessando 11 comuni tra le provincie di Pescara e Chieti. La prima macroarea include lo stabilimento chimico di Bussi sul Tirino, l...

This proceeding paper contains information to promote Poplar to incorporate in their farmlands. Poplar cultivation can be taken up under agroforestry by farmers in the eastern Uttar Pradesh.

This paper examines the pile bearing capacity of the innovative pile foundation, which is inspired by razor clam and the anchorage of tree root, so-called Bio-inspired Root Anchored Pile (BRAP). Three-dimensional finite element analysis was conducted by making use of a well-documented pile load test in North Jakarta. The results showed that, the BR...

Erythrina crista-galli | Cockspur Coral Tree | 雞冠刺桐 | Immortelle | Colorín de Seda

We study projectional skeletons and the Plichko property in Lipschitz-free spaces, relating these concepts to the geometry of the underlying metric space. Specifically, we identify a metric property that characterizes the Plichko property witnessed by Dirac measures in the associated Lipschitz-free space. We also show that the Lipschitz-free space...

National Botanical Garden (CSIR-NBRI) is one of the third largest and oldest botanical garden of in India. The garden gas rich collection of indigenous and exotic trees. The author has prepared an inventory of 324 trees species under 56 families.

A wireless ad hoc network paves way for many real time applications. Delay consideration over the transmission is the critical part of research which helps better packet delivery. Over the wireless medium interference is the common phenomenon which significantly reduces the performance and life time of the network. In this research work, delay redu...

We introduce the notion of frequency-constrained substring complexity. For any finite string, it counts the distinct substrings of the string per length and frequency class. For a string x of length n and a partition of [n] in \(\tau \) intervals, \(\mathcal {I}=I_1,\ldots ,I_\tau \), the frequency-constrained substring complexity of x is the funct...

Cassia fistula | Golden Shower Tree | 豬腸豆 | Cassier | Lluvia de Oro Asiática

The discovery of Eurasian Tree Sparrows in Sri Lanka in the new Port City. Probably new ship-assisted colonisers

This research work was aimed at investigating and determining the depth resolution of a 500Mhz GPR Antenna. The survey was conducted in an open space at the Physics Department, College of science-KNUST. The MALA GPR equipment with 500MHz shielded Antenna in the common offset-mode was used to investigate the depth at which materials were buried. Con...

This study sought to assess knowledge changes related to Climate Smart Agriculture programs and practices for tree nut growers in the San Joaquin Valley of California that could potentially raise awareness and influence behavioral change toward their adoption.

Some determinative sequent (DS) system for classical propositional calculus is introduced on the base of well-known Tsejtin’s transformation. It is proved that system DS is polynomial equivalent to resolution system R and cut-free sequent system PK—. Then we define the system SDS (DS with substitution rule) and the systems S_k DS (DS with restricte...

Background: Betula platyphylla Sukaczev is one of important tree species due to its ecological and economic value. It is a cold-tolerant tree species which also faces heat stress during summer. In the current study, RNA-Seq profiling of two-month-old B. platyphylla seedlings were conducted utilizing the MGISEQ-2000 platform.

The investigation of width parameters in both graph theory and algebraic contexts has attracted considerable attention. Among these parameters, tree width has emerged as a crucial metric. In this concise paper, we introduce a natural definition of Ultrafilters on graphs and demonstrate their equivalence to graph Tangles, establishing a dual relatio...

The present paper extends the work of Akın and Ulusoy (2022). On a Cayley tree of order with zero effective local external fields, we analyze the q-state Potts model (q-SPM) in the presence of competing for two nearest interactions and prolonged next nearest interactions. We establish Gibbs measures for the model using the Cayley tree’s self-simila...

We consider soft electrons in massless QED at tree level. The emission amplitude at leading order in the soft electron energy factorizes in a way similar to the soft photon case. We recast the soft electron factorization formula as a Ward identity of an asymptotic charge. This leads to the first example of an asymptotic fermionic symmetry in a theo...

We address the 1-line Steiner tree problem with minimum number of Steiner points. Given a line l, a point set P of n terminals in \({\mathbb {R}}^2\) and a positive constant K, we are asked to find a Steiner tree \(T_{l}\) to interconnect the line l and the n terminals such that the Euclidean length of each edge in \(T_{l}\) is no more than the giv...

In Petri net unfolding, according to the strategies of breadth first and depth first, the biggest problem lies in the potential explosion of the state space. Unfolding generates either accessible trees or branch processes. Making marking reduction or branch cutting accessible proves to be an effective approach to mitigating the state space expansio...

Region extraction is usually used by many computer vision tasks as a pre‐processing step to extract image features. However, how to efficiently extract effective regions remains a challenging problem. In this paper, inspired by the non‐symmetry and anti‐packing pattern representation model (NAM) and the FatRegion algorithm, a fast NAM‐based region...

Spatio-temporal crowdsourcing as a current widely used model, how to solve the equilibrium between the task planning efficiency and the worker's revenue is a challenging task, in order to overcome these problems, we firstly define crowdsourcing task allocation as a multi-party stochastic game, and solve the equilibrium for the case with perfect rec...

Gliricidia sepium | Fence Post Tree | 南洋櫻 | Gliricidia | Cacahuananche

This is a short story by Leanne Phillips inspired by the theme women and notions of service.

For half a century, biologists considered trees as particularly apparent to their enemies. But why then do some trees escape enemies in time and burst buds too early or late for their herbivores, causing phenological mismatch? We hypothesize that herbivore phenologies mismatch on trees that are unapparent in time: whose buds burst discreetly (slowl...

THREE-PART COMPOSITIONS WITH DEER
AND TREE OF LIFE
Abstract The authors analyze the cult object of the early Iron Age, accidentally found in the village Mostovsky, Krasnodar Territory, and consisting of an iron plate with a composition of bronze figures - deer - male and female, and two spectacle-shaped double spirals, reflecting the image of the...

It is likely that the Higgs potential of the Standard Model is unstable, turning negative at ϕ<Λ∼1010 GeV. Here we consider whether it is possible to have Higgs inflation on the positive stable region of the potential at ϕ<Λ. To do this we add a nonminimally coupled induced gravity sector with scalar χ to the Standard Model. For an appropriate form...

This paper introduces Behaviour Engineering-based Change Impact Analysis (BECIA), a novel approach to Change Impact Analysis (CIA). BECIA enables visualization of change impacts from modified requirements on architecture design. It also introduces the Change Impact Indicator (CII) metric, quantifying impact by calculating the Kolmogorov Complexity...

Review of 'Singapore, Very Old Tree', photography exhibition at the National Museum of Singapore by Robert Zhao Renhui

Central goals of higher education in STEM domains include learning of problem solving and self-assessment skills. To achieve these goals, we propose a novel self-assessment method called the Solve-Correct-Assess-Negotiate (SCAN) method of assessing problem solving that includes both formative and summative elements. We study students' learning expe...

The present study was carried out in four Magnolia species namely M. cathcartii, M. champaca, M. doltsopa, M. lanuginosa. The wood samples were collected from straight trees of selectedMagnolia species from forests of North Sikkim, NE India. The aim of the study was to provide detailed account of qualitative and quantitative anatomical characterist...