436 results match your criteria paths construction


Global Graph Attention Embedding Network for Relation Prediction in Knowledge Graphs.

IEEE Trans Neural Netw Learn Syst 2021 Jun 11;PP. Epub 2021 Jun 11.

The incompleteness of knowledge graphs triggers considerable research interest in relation prediction. As the key to predicting relations among entities, many efforts have been devoted to learning the embeddings of entities and relations by incorporating a variety of neighbors' information which includes not only the information from direct outgoing and incoming neighbors but also the ones from the indirect neighbors on the multihop paths. However, previous models usually consider entity paths of limited length or ignore sequential information of the paths. Read More

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Migrant women and gender-based violence: Focus group with operators.

J Prev Interv Community 2021 Jun 8:1-16. Epub 2021 Jun 8.

University of Naples, Federico II, Naples, Italy.

Gender violence is the most important factor that leads women refugees and asylum seekers to leave their country and is one of the main risks to which the migration journey exposes them. To the multidimensional trauma of migration is added the complex trauma of gender violence making migrant women even more vulnerable. This study, aimed to investigate meanings of experience of the operators who deal with migrant women in Southern Italy. Read More

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Greenway Cyclists' Visual Perception and Landscape Imagery Assessment.

Front Psychol 2021 21;12:541469. Epub 2021 May 21.

School of Architecture & Urban Planning, Huazhong University of Science and Technology, Wuhan, China.

Greenway is a kind of corridors in the city that takes natural elements as the main constituent foundation and connects open spaces with functions such as leisure and recreation. The assessment of the built greenway is a review of the past construction experiences, and it is also a supplement and improvement to the future greenway planning concept system, which has important academic and application value. This study will explore how greenway design factors influenced the local cyclists' perception of the landscape using on-site questionnaire and photo rating method. Read More

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Unfolding the synergy and interaction of water-land-food nexus for sustainable resource management: A supernetwork analysis.

Sci Total Environ 2021 Aug 14;784:147085. Epub 2021 Apr 14.

Construction Science Technology Group Co., Ltd of China, Beijing 100013, PR China.

Given the large amounts of water, land, and food embodied in the trade of goods and services, a key step in decoupling extensive resource consumption from the economic system is to understand the full impact of socioeconomic development on the water-land-food nexus. This study integrates input-output analysis, ecological network analysis, and Dempster-Shafer evidence theory into a supernetwork model to detect the water-land-food nexus among economic sectors with an aim to explore effective strategic paths for resource management and to facilitate the construction of a resource-saving society. Results show that most sectors of China are resource inefficient and that all resource systems are unsustainable as reflected in the low performance of their Finn's cycling index and system robustness. Read More

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Homology Modeling Using GPCRM Web Service.

Methods Mol Biol 2021 ;2268:305-321

Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Warsaw, Poland.

Homology modeling methods are commonly used for quick and precise construction of a desired protein or its mutant using protein templates, which were determined by crystallography, cryo-EM, or NMR. Due to the increasing number of such structures, the obtained models are precise even in the case of small similarity between sequences of template and modeled proteins. The reason for that is a high evolutionary conservation in the structure regions responsible for keeping the function of proteins. Read More

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January 2021

Geodesic Paths for Image Segmentation With Implicit Region-Based Homogeneity Enhancement.

IEEE Trans Image Process 2021 24;30:5138-5153. Epub 2021 May 24.

Minimal paths are regarded as a powerful and efficient tool for boundary detection and image segmentation due to its global optimality and the well-established numerical solutions such as fast marching method. In this paper, we introduce a flexible interactive image segmentation model based on the Eikonal partial differential equation (PDE) framework in conjunction with region-based homogeneity enhancement. A key ingredient in the introduced model is the construction of local geodesic metrics, which are capable of integrating anisotropic and asymmetric edge features, implicit region-based homogeneity features and/or curvature regularization. Read More

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Effects of cathode/anode electron accumulation on soil microbial fuel cell power generation and heavy metal removal.

Environ Res 2021 07 8;198:111217. Epub 2021 May 8.

School of Energy and Environment, Southeast University, Nanjing, 210096, China. Electronic address:

Microbial fuel cells (MFCs) with different electrode configurations were constructed to study the mechanism of influence of multiple current paths on their electrical performance and the removal of heavy metals in soil. Three types of MFCs were constructed, namely, double anode-single cathode (DASC), single anode-dual cathode (SADC), and single anode-single cathode (SASC). The total electricity generation of the three kinds of MFC was similar: 143. Read More

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Backward Planning for a Multi-Stage Steerable Needle Lung Robot.

IEEE Robot Autom Lett 2021 Apr 17;6(2):3987-3994. Epub 2021 Mar 17.

Department of Computer Science, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.

Lung cancer is one of the deadliest types of cancer, and early diagnosis is crucial for successful treatment. Definitively diagnosing lung cancer typically requires biopsy, but current approaches either carry a high procedural risk for the patient or are incapable of reaching many sites of clinical interest in the lung. We present a new sampling-based planning method for a steerable needle lung robot that has the potential to accurately reach targets in most regions of the lung. Read More

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Self-organized phase-transition lithography for all-inorganic photonic textures.

Light Sci Appl 2021 Apr 29;10(1):93. Epub 2021 Apr 29.

State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, 310027, Hangzhou, China.

Realizing general processing applicable to various materials by one basic tool has long been considered a distant dream. Fortunately, ultrafast laser-matter interaction has emerged as a highly universal platform with unprecedented optical phenomena and provided implementation paths for advanced manufacturing with novel functionalities. Here, we report the establishment of a three-dimensional (3D) focal-area interference field actively induced by a single ultrafast laser in transparent dielectrics. Read More

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Bézier Curves-Based Optimal Trajectory Design for Multirotor UAVs with Any-Angle Pathfinding Algorithms.

Sensors (Basel) 2021 Apr 2;21(7). Epub 2021 Apr 2.

Department of Mechanical Engineering, Imperial Colle London, Exhibition Rd., London SW7 2AZ, UK.

Multirotor Unmanned Aerial Vehicles (UAVs) play an imperative role in many real-world applications in a variety of scenarios characterized by a high density of obstacles with different heights. Due to the complicated operation areas of UAVs and complex constraints associated with the assigned mission, there should be a suitable path to fly. Therefore, the most relevant challenge is how to plan a flyable path for a UAV without collisions with obstacles. Read More

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Changes in flight paths of large-bodied birds after construction of large terrestrial wind turbines.

J Environ Manage 2021 Jul 23;290:112647. Epub 2021 Apr 23.

Department of Bioscience, Aarhus University, Kalø, Grenåvej 14, DK-8410, Rønde, Denmark. Electronic address:

The proliferation of ever-larger wind turbines poses risks to wildlife, especially from avian collision, yet avoidance behaviour of large-bodied, long-lived bird species in relation to wind turbines remains little studied away from collision "black spots" and offshore marine environments. Here, three-dimensional flight trajectory data are reported from a laser range-finder study of local movements of large-bodied birds (e.g. Read More

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Covid-19 and the Brazilian Reality: The Role of Favelas in Combating the Pandemic.

Front Sociol 2020 17;5:611990. Epub 2020 Dec 17.

Psychology Graduate Program, Psychology Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.

The consequences of coronavirus in favelas in Rio de Janeiro (Brazil) point to social inequality as a structuring factor in Brazilian society. The contagion spread and multiple death cases reveal the multiplicity of existence ways that cohabit the urban context, indicating that in many of these scenarios, access to decent housing, drinking water, and minimum income is not a reality and recommendations from international health agencies are challenging to implement. Against government technopolitics that drive different forms of death to the poorest, black communities, and slum dwellers, territorial insurgencies indicate other paths for the construction of a dignified life and access to fundamental rights, targeted solidarity practices, territorial political organization and the construction of specific public policies to deal with the effects of the virus which takes into account the particularities and distinct realities of the territory. Read More

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December 2020

Galactosyldiacylglycerols: From a Photosynthesis-Associated Apparatus to Structure-Defined Assembling.

J Agric Food Chem 2021 Apr 1. Epub 2021 Apr 1.

Department of Engineering, Faculty of Technical Science, Aarhus University, Gustav Wieds Vej 10, 8000 Aarhus, Denmark.

Being ubiquitously present in plants, microalgae, and cyanobacteria and as the major constituents of thylakoid membranes, monogalactosyldiacylglycerol (MGDG) and digalactosyldiacylglycerol (DGDG) make up approximately 52 and 26%, respectively, of chloroplast lipids. Thylakoid membranes harbor the photosynthetic complexes and numerous essential biochemical pathways where MGDG and DGDG play a central role in facilitating photosynthesis light reaction, maintaining chloroplast morphology, and responding to abiotic stresses. Furthermore, these galactolipids are also bioactive compounds with antitumor, antimicrobial, antiviral, immunosuppressive, and anti-inflammatory activities and important nutritional value. Read More

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The art gallery maze: a novel tool to assess human navigational abilities.

Cogn Process 2021 Apr 1. Epub 2021 Apr 1.

Department of Psychology, Sapienza University of Rome, Rome, Italy.

Humans differ widely in their ability to navigate effectively through the environment and in spatial memory skills. Navigation in the environment requires the analysis of many spatial cues, the construction of internal representations, and the use of various strategies. We present a novel tool to assess individual differences in human navigation, consisting of a virtual radial-arm maze presented as an art gallery to explore whether different sets of instructions (intentional or incidental) affect subjects' navigation performance. Read More

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Sulfur-Induced Growth of Coordination Polymer Derived-Straight Carbon Nanotubes on Carbon Nanofiber Network for Zn-Air Batteries.

Chemistry 2021 May 22;27(28):7704-7711. Epub 2021 Apr 22.

School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, P. R. China.

Low-cost heteroatom-doped carbon nanomaterials have been widely studied for efficient oxygen reduction reaction and energy storage and conversion in metal-air batteries. A Masson pine twigs-like 3-dimensional network construction of carbon nanofibers (CNFs) with abundant straight long Co, N, and S-doped carbon nanotubes (CNTs) is developed by thermal treatment of Co-based polymer coated onto polyacrylonitrile nanofiber network together with thiourea at 900 °C, denoted as CNFT-Co S -900. It is interesting to note that the introduction of a high concentration of sulfur does not lead to the complete toxicity of catalysts, but promotes the axial growth to selectively form straight CNTs instead of curly bamboo-like CNTs. Read More

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New framework for natural-artificial transport paths and hydrological connectivity analysis in an agriculture-intensive catchment.

Water Res 2021 May 7;196:117015. Epub 2021 Mar 7.

State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.

The impacts of human activities on hydrological connectivity disturb the network topology of transport paths, which has gradually evolved from natural terrain features to dual natural-artificial features. In this study, a new framework is proposed to extract information from natural-artificial transport paths and related hydrological connectivity dominated by agricultural practices and ditch networks. Graph theory and connectivity indexes are integrated for the comprehensive classification and the parallel processing of potential flow transport networks and their upstream drainage areas. Read More

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Response of grizzly bears (Ursus arctos) to pipelines in Alberta.

Environ Manage 2021 06 18;67(6):1158-1170. Epub 2021 Mar 18.

Research Scientist and Program Lead, Grizzly Bear Program, fRI Research, 1176 Switzer Drive, Hinton, AB, T7V 1V3, Canada.

This research provides the first in-depth analysis of fine-scale grizzly bear habitat selection and movement patterns in response to the linear footprints cleared for below-ground pipelines in Alberta. Using an extensive set of GPS location data from collared grizzly bears, we were able to determine that grizzly bears selected for younger pipelines (mean age since last construction~6.5 years), which are known to have a greater abundance of important bear foods. Read More

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Design and Construction of Repacked Soil Columns for Measuring Solute Transport, Plant Growth and Soil Biota.

Bio Protoc 2021 Jan 20;11(2):e3884. Epub 2021 Jan 20.

Department of Biological Sciences, School of Natural Sciences, University of Limerick, Ireland.

Researchers face a number of challenges in the construction of soil columns which can affect the outcome of their experiments. The use of intact soil cores closely mimics actual field conditions. However, the excavation of large intact soil cores is a time-consuming, labor-intensive process and may lead to soil compaction that would influence the solute transport behavior of the soil column. Read More

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January 2021

Assessment of delivery and childbirth care in the maternity units of Rede Cegonha: the methodological paths.

Cien Saude Colet 2021 Mar 12;26(3):789-800. Epub 2020 Jun 12.

Departamento de Saúde Pública, Programa de Pós-Graduação em Saúde Coletiva, Universidade Federal do Maranhão. São Luís MA Brasil.

This article describes the methodology used to evaluate delivery and childbirth care practices in maternity hospitals that belong to the Rede Cegonha, according to scientific evidence and rights guarantee. It shows the maternity selection criteria, the evaluated guidelines, their devices and check items, the method used to collect information and the treatment of data to obtain the results. It discusses the chosen guidelines and the strategy of returning results to managers and services and discusses their potential to foster management qualification processes and obstetric and neonatal care. Read More

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Reverse supply chain conceptual model for construction and demolition waste.

Waste Manag Res 2021 Mar 11:734242X21998730. Epub 2021 Mar 11.

Technology Institute - ITEC, Federal University of Pará - UFPA, Belém, Para, Brazil.

Construction and demolition waste (CDW) substantially contributes to environmental degradation because of its intrinsic characteristics of fast and high generation volume, low recycling rate, and low revenue margins. A systemic problem is that recycling facilities are not usually a part of a reverse supply chain (RSC) specific for CDW. This makes the recovery process costs prohibitive, especially where companies are unable to receive and process large volumes of waste continuously. Read More

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Gyroscopic performance and some seismic measurements made with a 10 meter perimeter ring laser gyro housed in the Ernest Rutherford building.

Appl Opt 2021 Feb;60(6):1737-1743

We describe the construction and operation of a large ring laser whose beam paths enclose an area of 6.25. The gyroscopic performance of this large laser interferometer was determined using laser operation at a wavelength of 632. Read More

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February 2021

Identifying the Non-Traditional Safety Risk Paths of Employees from Chinese International Construction Companies in Africa.

Int J Environ Res Public Health 2021 02 18;18(4). Epub 2021 Feb 18.

School of Management Science & Real Estate, Chongqing University, Shazheng Street 174, Shapingba, Chongqing 400045, China.

In recent years, more and more construction enterprises are expanding into overseas markets, especially in underdeveloped regions such as Africa. Compared to domestic construction projects, international construction projects have been faced with more uncertainties and increased levels of safety risks to the employees in the context of political turmoil, racism, and religious conflict in the host country. This study aims to answer what risk factors contribute to the threat to the safety of overseas employees and how safety risk factors interact, using employees from Chinese international construction companies (CICCs) in Africa as an example. Read More

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February 2021

Mapping the Worldwide Trends on Energy Poverty Research: A Bibliometric Analysis (1999-2019).

Int J Environ Res Public Health 2021 02 11;18(4). Epub 2021 Feb 11.

College of Public Administration, Huazhong University of Science and Technology, Wuhan 430074, China.

Energy poverty is one of the main challenges facing humanity in the 21st century. Research on energy poverty is becoming a common focus of scholars in many areas. Bibliometrics can help researchers dig deep into the information of specific research fields from a quantitative perspective. Read More

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February 2021

Allelopathic effect of Artemisia argyi on the germination and growth of various weeds.

Sci Rep 2021 Feb 22;11(1):4303. Epub 2021 Feb 22.

Hubei Provincial Key Laboratory of Traditional Chinese Medicine Resources and Traditional Chinese Medicine Chemistry, Hubei University of Chinese Medicine, Wuhan, China.

Allelopathy means that one plant produces chemical substances to affect the growth and development of other plants. Usually, allelochemicals can stimulate or inhibit the germination and growth of plants, which have been considered as potential strategy for drug development of environmentally friendly biological herbicides. Obviously, the discovery of plant materials with extensive sources, low cost and markedly allelopathic effect will have far-reaching ecological impacts as the biological herbicide. Read More

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February 2021

Analysis of driving factors on China's industrial solid waste generation: Insights from critical supply chains.

Sci Total Environ 2021 Jun 10;775:145185. Epub 2021 Feb 10.

College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.

Industrial solid waste (ISW) poses a huge potential threat to human health and the environment. To prevent pollution at its source, it is necessary to analyze the socioeconomic drivers and identify the key supply chains that cause changes in ISW generation. In this study, based on monetary input-output tables (MIOTs) in China from 2011 to 2015, structural decomposition analysis (SDA) was used to study the influence of socioeconomic drivers on common industrial solid waste (CISW) and hazardous waste (HW) generation. Read More

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Nitromethane Decomposition via Automated Reaction Discovery and an Corrected Kinetic Model.

J Phys Chem A 2021 Feb 11;125(7):1447-1460. Epub 2021 Feb 11.

Department of Chemistry and The PULSE Institute, Stanford University, Stanford, California 94305, United States.

We explore the systematic construction of kinetic models from reaction data for the decomposition of nitromethane. Our models are constructed in a computationally affordable manner by using reactions discovered through accelerated molecular dynamics simulations using the ReaxFF reactive force field. The reaction paths are then optimized to determine reaction rate parameters. Read More

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February 2021

Toward a formal theory of embodied cognition.

Authors:
Rodrick Wallace

Biosystems 2021 Apr 30;202:104356. Epub 2021 Jan 30.

Division of Epidemiology at the New York State Psychiatric Institute, Box 47, 1051 Riverside Dr., NY, NY, 10032, USA. Electronic address:

Since the reduction of uncertainty associated with cognition necessarily implies existence of a 'dual' information source, the Source Coding and Rate Distortion Theorems of information theory, in combination with the Data Rate Theorem of control theory, are sufficient to model much of embodied cognition. An iterated Morse Function 'free energy' allows construction of a 'higher entropy' analog constrained to obey the approximate dynamics of the Onsager gradient model of nonequilibrium thermodynamics. However, since palindromes are unlikely, there is no time reversal symmetry and hence no Onsager reciprocal relations. Read More

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Industrial polycyclic aromatic hydrocarbons (PAHs) emissions embodied in domestic trade in China in 2012.

J Environ Manage 2021 Apr 27;284:111994. Epub 2021 Jan 27.

College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.

Atmospheric Polycyclic Aromatic Hydrocarbons (PAHs) emissions cause non-negligible damage to human health and well-being. Effective regional cooperation is urgently required to mitigate PAHs emissions to maintain satisfactory air quality. This study quantified and tracked China's PAHs emissions flows embodied in interprovincial trade. Read More

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Insight into Thermal Stress Distribution and Required Reinforcement Reducing Early-Age Cracking in Mass Foundation Slabs.

Materials (Basel) 2021 Jan 20;14(3). Epub 2021 Jan 20.

Faculty of Civil Engineering, Silesian University of Technology, Akademicka 5, 44-100 Gliwice, Poland.

The heat released during cement hydration results in temperature-induced non-uniform volume changes in concrete structures. As a consequence, tensile thermal stresses of significant values may occur. The level of these stresses can be lowered by using various technological measures during the construction process and a proper concrete mix composition. Read More

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January 2021

Theoretical study of the pyrolysis of β-1,4-xylan: a detailed investigation on unimolecular concerted reactions.

Phys Chem Chem Phys 2021 Feb;23(4):2605-2621

Laboratoire Réactions et Génie des Procédés, Université de Lorraine, CNRS, F-54000 Nancy, France.

A theoretical study of the thermal decomposition of β-1,4-xylan, a model polymer of hemicelluloses, is proposed for the first time. A mechanism based on unimolecular concerted reactions is elaborated in a comprehensive way. Elementary reactions, such as dehydrations, retro-aldol, retro Diels-Alder, retro-ene, glycosidic bond fissions, isomerizations, etc. Read More

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February 2021