Maps - Science topic

A submanifold φ: M → E^{m} is called "biharmonic" if it satisfies Δ^{2}φ=0 identically, according to the author. On the other hand, G.-Y. Jiang studied biharmonic maps between Riemannian manifolds as critical points of the bienergy functional, and proved that biharmonic maps φ are characterized by vanishing of bitension τ_{2} of φ. During last thr...

In emergencies, high stake decisions often have to be made under time pressure and strain. In order to support such decisions, information from various sources needs to be collected and processed rapidly. The information available tends to be temporally and spatially variable, uncertain, and sometimes conflicting, leading to potential biases in dec...

Difficulties in understanding physics concepts are often experienced by students such as in the material of regular uniform motion. This study aims to describe the mental models of first-year secondary school students on regular straight-line motion. This research utilized a case study method of 167 students at the secondary level with an average a...

This is a political play. We are social creatures. We are political creatures.

The environmental regulation of continental fish farming in Brazil is closely linked to land occupation and use. Areas used for this activity are mostly located in permanent preservation areas (PPA), close to rivers and springs, demonstrating the necessity of regulating this activity for its compliance with public policy. Santa Catarina is a leadin...

From two functions in the Hilbert space L 2 (R d) whose Fourier transform has certain decay, one defines a quasi-projection operator. In this paper, we prove necessary and sufficient conditions on those functions in order to the associated quasi-projection operator provides a desired approximation order and density order. To give our conditions we...

In the modern world where the use of hard drives and networks cannot be underestimated, the protection of information is of equal importance and especially so with images. Encryption remains as an introductory safeguard that helps to protect the privacy of the image data and obscure specific data. Nevertheless, encryption of images implies encrypti...

In the oil fields of Western Siberia, the average water cut has reached 80-95%, with a relatively low oil recovery factor (RF) of 38%. This paper proposes a comprehensive approach to solving the problem of water encroachment: identifying the cause of water cut, selecting a flow deviation technology (FDT) and its composition, selecting an affected a...

Building upon the interpolative classical results of D. Achour, P. Rueda, and R. Yahi for Lipschitz ideals we define the interpolative fuzzy Lipschitz ideal concept for fuzzy Lipschitz operators between fuzzy metric spaces and complete fuzzy normed spaces which is a natural generalization of the notion of absolutely (crisp) Lipschitz (p, θ)-summing...

In this article, the mathematical model of steady state problems based on horizontal radial flow in homogenous confined aquifers has been presented. Then we design efficient neural network (ANN) to solve the equation in polar coordinates. A reliable unconstrained optimization method has been used as training algorithm to get high accuracy results....

Social protests normally aim to achieve a certain goal. In order to have an effect, protests need media coverage to gain media noticeability and legitimacy. Without media coverage, and positive coverage in particular, protests are rarely successful in achieving their goals. This entry maps the main factors that affect media coverage in professional...

This study examines the role of teachers in facilitating the effective implementation of maps and atlases as educational tools within the primary school setting. By investigating the influence of teachers on the utilization of cartographic resources, the study aims to provide insights into the pedagogical strategies employed by teachers and their i...

We introduce the concept of d-continuity and d^-1-continuity for multivalued mappings defined on a partially ordered quasi-metric spaces. Then, we prove several fixed point theorems for multivalued maps which generalize the existing results in the literature. In the end we give examples to illustrate our results. Moreover, we present an application...

A 17‐year‐old patient presented with frequent palpitations, where the tachycardia was not sustained and could not be induced, making it impossible to pinpoint the earliest activation site using the activation map. However, by utilizing a dual‐chamber electrogram‐based pace mapping technique, we successfully identified the origin and achieved effect...

Since the beginning of the research on the family business and rural economy, there has been a problem with the delimitation of the concepts. Given this problem, this study’s main objective was to identify and visualize the intellectual structure of these two issues through scientific maps. To meet this objective, an evaluation of scientific perfor...

Motivated by the search for an appropriate notion of a cluster superalgebra, incorporating Grassmann variables, Ovsienko and Tabachnikov considered the extension of various recurrence relations with the Laurent phenomenon to the ring of dual numbers. Furthermore, by iterating recurrences with specific numerical values, some particular well-known in...

Many of the current fault diagnosis methods rely on time-domain signals. While the richest information are contained in these signals, their complexity poses challenges to network learning and limits the ability to fully characterize them. To address these issues, a novel multi-channel fused vision transformer network (MFVTN) is proposed in this pa...

In this mostly expository article, we give streamlined proofs of several well-known Lipschitz extension theorems. We pay special attention to obtaining statements with explicit expressions for the extension constants. One of our main results is an explicit version of a very general Lipschitz extension theorem of Lang and Schlichenmaier. A special c...

Purpose-Accreditation, a proven quality strategy, can help educational institutions at all levels in attaining Sustainable Development Goal 4 (SDG4). The purpose of this study, therefore, is to gain insights from the literature on accreditation and quality assurance and understand the focus areas of existing research. The study also aims at finding...

Pulau Bakalan Pauno di Kabupaten Banggai Kepulauan, Sulawesi Tengah, terletak di segitiga karang dunia dan memiliki ekosistem terumbu karang yang sangat beragam serta potensi besar untuk pengembangan wisata bahari berbasis ekowisata. Penelitian ini menganalisis kondisi ekosistem terumbu karang menggunakan metode deskriptif kuantitatif melalui data...

In the agri-food sector, traceability is essential to ensure the quality, safety, and transparency of supply chains, where transportation companies are key stakeholders in the overall movement of goods. The multitude of actors involved in supply chains makes it challenging to achieve the above mentioned objectives: each company usually uses its own...

Background Goal setting for persons within health and social care environments can be a challenging task; although health and social care settings aim to address a person’s care needs, the literature tends to focus on health. Person-centred care should encompass the goals/needs/wants of the person, whether these goals focus on career, relationship,...

We prove a non-abelian arboreal Galois group result for certain maps with non-real Julia set at an archimedean place. We investigate the question of determining which polynomials defined over $\mathbb{R}$ have real Julia set. Finally we show that for some certain classes of Latt\`es maps associated to the duplication map on an elliptic curve has no...

We introduce Generalizable 3D-Language Feature Fields (g3D-LF), a 3D representation model pre-trained on large-scale 3D-language dataset for embodied tasks. Our g3D-LF processes posed RGB-D images from agents to encode feature fields for: 1) Novel view representation predictions from any position in the 3D scene; 2) Generations of BEV maps centered...

This paper presents a novel method to enhance ground truth disparity maps generated by Semi-Global Matching (SGM) using Maximum a Posteriori (MAP) estimation. SGM, while not producing visually appealing outputs like neural networks, offers high disparity accuracy in valid regions and avoids the generalization issues often encountered with neural ne...

We study the energy-critical half-wave maps equation: \[ \partial_t \mathbf{u} = \mathbf{u} \times |D| \mathbf{u} \] for $\mathbf{u} : [0, T) \times \mathbb{R} \to \mathbb{S}^2$. Our main result establishes the global existence and uniqueness of solutions for all rational initial data $\mathbf{u}_0 : \mathbb{R} \to \mathbb{S}^2$. This demonstrates...

Autonomous vehicles are considered as one of the most futuristic topics in the domain of intelligent transportation systems. The object detection and tracking around an autonomous vehicle is essential for it to operate safely. One of the primary difficulties of implementing Autonomous Vehicles globally is the quality of road surface. Road anomalies...

It is important to explore the hot deformation behavior and establish the hot processing map of steel to design and optimize the hot rolling process. In this paper, 50CrVA spring steel was used as the experimental material. Single-pass compression tests were performed at 850–1150 °C and 0.01–5 s−1 on an MMS-300 thermo-mechanical simulation testing...

This paper presents a dense depth estimation approach from light-field (LF) images that is able to compensate for strong rolling shutter (RS) effects. Our method estimates RS compensated views and dense RS compensated disparity maps. We present a two-stage method based on a 2D Gaussians Splatting that allows for a ``render and compare" strategy wit...

A smooth projective toric variety $X=X_\Sigma$ has a geometric quotient description $V /\!/ T$. Using $2|1$-pointed quasimap invariants, one can define a quantum $H^*(T)$-module $QM(X)$, which deforms a natural module structure given by the Kirwan map $H^*(T) \rightarrow H^*(X)$. The Batyrev ring of $X$, defined from combinatorial data of the fan $...

This case study examines the indicators of conflict among coworkers in a company and the potential factors contributing to conflict escalation, based on Furlong's (2005) models of conflict and resolution. This hypothetical case provides different companies, individuals, and organizations with recommendations to help avoid the forms of conflict betw...

We consider the Helmholtz equation [Δ+k02(1+q(x,ω))]u=−f in RR2 and RR3, where the coefficient q(x,ω) is a Gaussian random field. For any open ball B that includes the support of x↦q(x,ω), we approximate and characterize spectrally the source-to-measurement map f↦u|∂B in the weak scattering/low-frequency setting. To this end, we first analyze the c...

Research shows that user traits can modulate the use of visualization systems and have a measurable influence on users' accuracy, speed, and attention when performing visual analysis. This highlights the importance of user‐adaptive visualization that can modify themselves to the characteristics and preferences of the user. However, there are very f...

This is a foundation for algebraic geometry, developed internal to the Zariski topos, building on the work of Kock and Blechschmidt (Kock (2006) [I.12], Blechschmidt (2017)). The Zariski topos consists of sheaves on the site opposite to the category of finitely presented algebras over a fixed ring, with the Zariski topology, that is, generating cov...

The language of homotopy type theory has proved to be appropriate as an internal language for various higher toposes, for example with Synthetic Algebraic Geometry for the Zariski topos. In this paper we apply such techniques to the higher topos corresponding to the light condensed sets of Dustin Clausen and Peter Scholze. This seems to be an appro...

With the rapid development of stereoscopic display technologies, especially glasses-free 3D screens, and virtual reality devices, stereoscopic conversion has become an important task to address the lack of high-quality stereoscopic image and video resources. Current stereoscopic conversion algorithms typically struggle to balance reconstruction per...

Segmenting stroke lesions in Magnetic Resonance Imaging (MRI) is challenging due to diverse clinical imaging domains, with existing models struggling to generalise across different MRI acquisition parameters and sequences. In this work, we propose two novel physics-constrained approaches using synthetic quantitative MRI (qMRI) images to enhance the...

Object detection in aerial images poses significant challenges due to the high dimensions of the images, requiring efficient handling and resizing to fit object detection models. The image-slicing approach for object detection in aerial images can increase detection accuracy by eliminating pixel loss in high-resolution image data. However, determin...

This paper presents PlanarSplatting, an ultra-fast and accurate surface reconstruction approach for multiview indoor images. We take the 3D planes as the main objective due to their compactness and structural expressiveness in indoor scenes, and develop an explicit optimization framework that learns to fit the expected surface of indoor scenes by s...

Descriptions of expertise have focused on knowledge and characteristics of mathematics teacher educator (MTE) practice. To contribute to discussion of MTE expertise we share findings from a study of MTE discussion practice with prospective teachers (PTs) concerning pedagogy of teaching mathematics. Research on MTE discussion practices have shown th...

Aiming at the current problems that different defects in linear scan PCB have scale differences and some defects have high similarity with the background, which are difficult to localize and classify, an expanded receptive field PCB defect detection algorithm is proposed to be applied to the defect detection of linear scan circuit boards. The expan...

Keywords: right bank of the Lower Dniester and the lower reaches of the Bîc River, earthen rampart, cartography and descriptions of the 19th-20th centuries, archaeological research of the area since 1959, planigraphy, interpretations and dating of the linear earthworks. Abstract: The linear earthen ramparts in Bessarabia and Budzhak may have been n...

Recently, the question of whether surjective maps preserving the norm of a symmetric Kubo-Ando mean can be extended to Jordan $\ast$-isomorphisms has been tackled. The question was affirmatively answered for surjective maps between $C^{*}$-algebras for certain specific classes of symmetric Kubo-Ando means. Here, we give a comprehensive answer to th...

This study aims to map the evolution of research on computational thinking (CT) within the context of science and technology, with a particular focus on science education and physics learning. Through a content analysis of a corpus of scholarly publications from 2015 to 2023, this study seeks to identify annual trends in research on computational t...

Ship object detection and recognition in remote sensing images (RSIs) is a challenging task due to the multi-scale and complex background characteristics of ship objects. Currently, convolution-based methods cannot adequately solve these problems. Firstly, this paper first applies the diffusion model to the task of ship object detection and recogni...

Recent advancements have shown that transverse magnetic (TM)-mode gyrotrons are feasible under specific conditions, yet their capabilities remain insufficiently explored. This article systematically investigates a W-band TM11-mode gyrotron within the down-tapered structure(s) to uncover its limitations and underlying physics. 2D interaction-efficie...

The diurnal cycle of precipitation (DCP) is a fundamental component of the precipitation cycles across various temporal scales. However, the absence of a comprehensive and intuitive clustering description of the DCP, including precipitation amount, frequency, intensity, and seasonality on the global scale, has impeded understanding of climate impac...

In the evolving era of generative artificial intelligence (AI), bias in AI systems remains a significant concern, leading to unfair outcomes across applications. Addressing this issue requires understanding how biases are introduced and propagated through AI models. In this paper, we present a network-based framework to map, analyze, and mitigate b...

Recent developments in monocular depth estimation methods enable high-quality depth estimation of single-view images but fail to estimate consistent video depth across different frames. Recent works address this problem by applying a video diffusion model to generate video depth conditioned on the input video, which is training-expensive and can on...

Without a complete theory of quantum gravity, the question of how quantum fields and quantum particles behave in a superposition of spacetimes seems beyond the reach of theoretical and experimental investigations. Here we use an extension of the quantum reference frame formalism to address this question for the Klein-Gordon field residing on a supe...

Let Tm be the maximal torus of a set of m×m unitary diagonal matrices. Let T be a collection of all maps that rigidly rotate every circle of latitude of the sphere with a fixed angle. T is also a maximal torus, and we shall prove in this paper that T is the topological limit inf of Tm.

In this study, we have designed freeform mirrors capable of transforming uniform irradiance distribution into complicated irradiance distribution. The design methodology incorporates two key algorithms: Poisson-based grid optimization and a discrete cosine transform (DCT). The grids on the target plane were optimized using Poisson-based grid optimi...

In this note we complete the analysis carried on in Caby et al (2023 Nonlinearity 36 3603–21) about the topological synchronisation of unimodal maps of the interval coupled in a master–slave configuration, by answering to the questions raised in that Paper. Namely, we compute the weak limits of the invariant measure of the coupled system as the cou...

Background Excess mortality rates for breast cancer and colorectal–anal cancer in Sardinia are reported in the literature. The aim of the study is to analyse mortality for both cancer entities in Sardinian at municipality level. Methods Sex-specific mortality rates by region and municipality of residence were computed using data from the Italian N...

RGB-D semantic segmentation utilizes both images and depth maps to classify pixels into different semantic classes. Currently, most methods rely on scale interaction within a single modality or the late fusion of dual-modal information, with little exploration of the correlation between two modalities at the same scale. There is also limited resear...

The formation and evolution of arc‐backarc systems govern crustal production in some of the most volcanically and hydrothermally active environments on Earth. This study presents the first complete three‐dimensional density model of the active arc‐backarc system in the southwest Pacific comprising the Lau Basin and Tofua arc. Seafloor density and c...

Analysis of more than 300 M-class solar flares observed with the Atmospheric Imaging Assembly onboard the Solar Dynamics Observatory in the 131 Å channel, revealed 16 events of sloshing oscillations in hot solar coronal loops. Time–distance maps made along the loops demonstrated EUV emission intensity blobs bouncing between the footpoints, i.e., sh...

Science education has highlighted the need to tackle the current climate emergency from a holistic perspective. However, little of the research in this area focuses on creating the tools necessary to visualise the interrelations between the factors responsible and provide a more connected understanding of the crisis. The aim of this study is to add...

The use of safety helmets in industrial settings is crucial for preventing head injuries. However, traditional helmet detection methods often struggle with complex and dynamic environments. To address this challenge, we propose YOLOv8s-SNC, an improved YOLOv8 algorithm for robust helmet detection in industrial scenarios. The proposed method introdu...

We define a Kripke semantics for a conditional logic based on the propositional logic \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\textsf{N4}$$\end{document}, the p...

Autonomous-rail Rapid Transit (ART) as a new form of road transportation faces the challenge of colliding with other road users. However, a complete and affordable environmental perception system has not yet been implemented to ART. This paper proposed a vulnerable road users detection and safety warning method for ART with four modules. The image...

Multiband superconductivity plays an important role in many emergent novel superconductors and has attracted great interest over the years. Various related experimental aspects have been intensely researched, but a quantitative understanding on the Cooper-pair transport remains still elusive, despite its fundamental and technological importance. We...

Four new species of the genus Tapinocyba Simon, 1884 are described from Jiangjin, Chongqing: T. centralis sp. nov. (♂), T. denticulata sp. nov. (♂♀), T. triangularis sp. nov. (♂♀), and T. virga sp. nov. (♂♀). The new species exhibit distinctive genital features, such as a bifurcated embolus tip in the male palp of T. denticulata sp. nov. and T. vir...

Lepidium bonariense L., L. campestre (L.) W.T. Aiton, Shangwua masarica (Lipsky) Yu J. Wang & Raab-Struabe, Solanum nitidibaccatum Bitter and S. sisymbriifolium Lamarck are newly recorded from Pakistan. Illustrations and a distribution map of the newly recorded species are provided.

The philosophy of science needs large-scale science maps.

A quadrangulation on a surface F 2 is a map of a simple graph on F 2 such that each 2-dimensional face is quadrangular. Youngs proved that every quadrangulation on the projective plane P 2 is either bipartite or 4-chromatic. It is a surprising result since every quadrangulation on an orientable surface with sufficiently high edge-width is 3-colorab...

Kawasan pesisir Kecamatan Muara Gembong, Kabupaten Bekasi, didominasi oleh ekosistem mangrove yang memiliki peran penting dalam menjaga keseimbangan lingkungan sekaligus mendukung kehidupan masyarakat setempat. Hutan mangrove di Muara Gembong membentang sepanjang 17 km di pesisir pantai utara. Namun, kondisi mangrove saat ini cukup memprihatinkan....

Shadows introduce challenges such as reduced brightness, texture deterioration, and color distortion in images, complicating a holistic solution. This study presents \textbf{ShadowHack}, a divide-and-conquer strategy that tackles these complexities by decomposing the original task into luminance recovery and color remedy. To brighten shadow regions...

This paper is devoted to numerical simulation of collision and consequent separation of conductive same-sized droplets of different sizes (from 0.3 to 2 mm) under the effect of a constant voltage exceeding the threshold of the transition from coalescence to non-coalescence. The computations were based on the arbitrary Lagrangian–Eulerian method—the...

It is well-known that the classical Schwarz lemma yields an explicit comparison of two Hermitian metrics with uniform constant \emph{negative} curvature bounds through holomorphic maps between complex manifolds. In this paper, we establish Schwarz lemmas for holomorphic bundle maps between abstract Hermitian holomorphic vector bundles with various...