Physical Modelling of Roll and Pitch Motions of Travelling or Stationary Ship in Large-Scale Landslide-Generated Waves

Large-scale landslides often occur in river-type reservoirs, and landslide-generated waves affect navigation channels and the navigation of ships. Thus, such waves cause widespread regional disasters. This study establishes a mechanical model of landslide-generated waves via field investigations and data collection, reveals the mechanism and process of landslide-generated waves, and investigates the propagation characteristics of landslide-generated waves along a sloping wave. The feasibility of the model is verified via (i) regularity analysis, (ii) comparative analysis of the effect of landslide-generated waves of mountain river channel reservoirs on the movement characteristics of navigation vessels and stationary vessels, (iii) deviation from the equilibrium position, and (iv) an in-depth study of the influence of large-scale landslide-generated waves on ships in different navigation positions in a river channel. Countermeasures are proposed for a sailing ship to tackle a sudden landslide-generated wave; these measures can provide a theoretical basis for ships to sail safely through large-scale landslide-generated waves.

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Degree Adjusted Large-Scale Network Analysis Reveals Novel Putative Metabolic Disease Genes

Biology ◽

10.3390/biology10020107 ◽

2021 ◽

Vol 10 (2) ◽

pp. 107

Author(s):

Apurva Badkas ◽

Thanh-Phuong Nguyen ◽

Laura Caberlotto ◽

Jochen G. Schneider ◽

Sébastien De Landtsheer ◽

...

Keyword(s):

Network Analysis ◽

Network Topology ◽

Large Scale ◽

Metabolic Diseases ◽

Critical Factor ◽

Disease Genes ◽

Alcoholic Fatty Liver ◽

Large Scale Network ◽

Depth Study ◽

Public Datasets

A large percentage of the global population is currently afflicted by metabolic diseases (MD), and the incidence is likely to double in the next decades. MD associated co-morbidities such as non-alcoholic fatty liver disease (NAFLD) and cardiomyopathy contribute significantly to impaired health. MD are complex, polygenic, with many genes involved in its aetiology. A popular approach to investigate genetic contributions to disease aetiology is biological network analysis. However, data dependence introduces a bias (noise, false positives, over-publication) in the outcome. While several approaches have been proposed to overcome these biases, many of them have constraints, including data integration issues, dependence on arbitrary parameters, database dependent outcomes, and computational complexity. Network topology is also a critical factor affecting the outcomes. Here, we propose a simple, parameter-free method, that takes into account database dependence and network topology, to identify central genes in the MD network. Among them, we infer novel candidates that have not yet been annotated as MD genes and show their relevance by highlighting their differential expression in public datasets and carefully examining the literature. The method contributes to uncovering connections in the MD mechanisms and highlights several candidates for in-depth study of their contribution to MD and its co-morbidities.

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Renovation of Shantytowns and Construction of New Communities

10.1007/978-3-030-74544-8_8 ◽

2021 ◽

pp. 121-152

Author(s):

Guoqing Li

Keyword(s):

Social Integration ◽

Urban Communities ◽

Social Mobility ◽

Future Development ◽

Large Scale ◽

Urban Society ◽

Living Environment ◽

Field Investigations ◽

New Type ◽

China’S Cities

AbstractLarge-scale shantytown renovation initiated in 2005 has completely changed the living environment of lower-income residents in Chinese cities. It has also brought about great changes in the make-up of urban communities. Over 100 million people now live in newly renovated former shantytowns, creating a new type of communityacross China's cities and towns. This chapter summarises the evolutionary phases in this process, outlining the characteristics and the different models involved. It then uses research from field investigations into four models of shantytown reconstruction to consider changes in social mobility and levels of segregation within the reconstructed communities. It also establishes the more holistic features of these new communities as a model for future development and greater social integration. The process draws on the shared heritage—the ‘roots and souls’—of earlier communities and reshapes ‘shantytown removal’ in a more socially integrated way for the future development of Chinese urban society.

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Arrays of Rotating Permanent Magnet Dipoles for Stirring and Pumping of Liquid Metals

Journal for Manufacturing Science and Production ◽

10.1515/jmsp-2014-0039 ◽

2015 ◽

Vol 15 (1) ◽

pp. 35-39 ◽

Cited By ~ 2

Author(s):

Andris Bojarevičs ◽

Toms Beinerts ◽

Mārtiņš Sarma ◽

Yurii Gelfgat

Keyword(s):

Liquid Metal ◽

Permanent Magnet ◽

Large Scale ◽

Liquid Metals ◽

Physical Modelling ◽

Industrial Applications ◽

Parameter Analysis ◽

Wide Range ◽

Metallurgical Furnaces ◽

Multiple Configurations

AbstractMultiple configurations of synchronously rotating permanent magnet cylinders magnetized across the axes are proposed for liquid metal stirring for homogenization as well as for pumping. Universal analytical model is used for an initial parameter analysis. Then experimental setups were built to perform physical modelling of the industrial applications, e.g. large-scale metallurgical furnaces. Velocity distribution in the liquid metal was measured using different methods: the Ultrasound Doppler anemometry and the potential difference probes. The study shows that the cylindrical permanent magnet setups can achieve up to 10 times higher energy efficiency compared to AC inductors and have potential of wide-range industrial application, e.g. can be used as stirrers for secondary aluminium furnaces with up to 50 cm thick walls.

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A Large Scale FDTD Analysis of Propagation Characteristics for Wireless Link Design of 4.4 GHz-Band WAIC Installed on Passenger Aircraft

2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium) ◽

10.1109/usnc-ursi.2018.8602759 ◽

2018 ◽

Author(s):

T. Sekiguchi ◽

T. Hikage ◽

S. Futatsumori ◽

A. Kohmura ◽

N. Yonemoto

Keyword(s):

Large Scale ◽

Wireless Link ◽

Propagation Characteristics ◽

Passenger Aircraft

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Quasiperiodic ULF-pulsations in Saturn's magnetosphere

Annales Geophysicae ◽

10.5194/angeo-27-885-2009 ◽

2009 ◽

Vol 27 (2) ◽

pp. 885-894 ◽

Cited By ~ 5

Author(s):

G. Kleindienst ◽

K.-H. Glassmeier ◽

S. Simon ◽

M. K. Dougherty ◽

N. Krupp

Keyword(s):

Magnetic Field ◽

Local Time ◽

Large Scale ◽

Rotation Period ◽

Low Frequency ◽

Radial Distance ◽

Main Magnetic Field ◽

Ulf Wave ◽

Field Investigations ◽

Magnetosphere Of Saturn

Abstract. Recent magnetic field investigations made onboard the Cassini spacecraft in the magnetosphere of Saturn show the existence of a variety of ultra low frequency plasma waves. Their frequencies suggest that they are presumably not eigenoscillations of the entire magnetospheric system, but excitations confined to selected regions of the magnetosphere. While the main magnetic field of Saturn shows a distinct large scale modulation of approximately 2 nT with a periodicity close to Saturn's rotation period, these ULF pulsations are less obvious superimposed oscillations with an amplitude generally not larger than 3 nT and show a package-like structure. We have analyzed these wave packages and found that they are correlated to a certain extent with the large scale modulation of the main magnetic field. The spatial localization of the ULF wave activity is represented with respect to local time and Kronographic coordinates. For this purpose we introduce a method to correct the Kronographic longitude with respect to a rotation period different from its IAU definition. The observed wave packages occur in all magnetospheric regions independent of local time, elevation, or radial distance. Independent of the longitude correction applied the wave packages do not occur in an accentuated Kronographic longitude range, which implies that the waves are not excited or confined in the same selected longitude ranges at all times or that their lifetime leads to a variable phase with respect to the longitudes where they have been exited.

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Effects of Concrete on Propagation Characteristics of Guided Wave in Steel Bar Embedded in Concrete

Shock and Vibration ◽

10.1155/2014/910750 ◽

2014 ◽

Vol 2014 ◽

pp. 1-14 ◽

Cited By ~ 3

Author(s):

Zhupeng Zheng ◽

Ying Lei

Keyword(s):

Large Scale ◽

Guided Waves ◽

Density Ratio ◽

Guided Wave ◽

Wave Number ◽

Propagation Characteristics ◽

Civil Infrastructures ◽

Steel Bar ◽

Reinforced Concrete Member ◽

Steel Bars

Techniques based on ultrasonic guided waves (UGWs) play important roles in the structural health monitoring (SHM) of large-scale civil infrastructures. In this paper, dispersion equations of longitudinal wave propagation in reinforced concrete member are investigated for the purpose of monitoring steels embedded in concrete. For a steel bar embedded in concrete, not the velocity but the attenuation dispersion curves will be affected by the concrete. The effects of steel-to-concrete shear modulus ratio, density ratio, and Poisson’s ratio on propagation characteristics of guided wave in steel bar embedded in concrete were studied by the analysis of the real and imaginary parts of the wave number. The attenuation characteristics of guided waves of steel bar in different conditions including different bar concrete constraint and different diameter of steel bar are also analyzed. Studies of the influence of concrete on propagation characteristics of guided wave in steel bars embedded in concrete will increase the accuracy in judging the structure integrity and promote the level of defect detection for the steel bars embedded in concrete.

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BACHEEISHDÍIO (PLACE WHERE MEN PACK MEAT)

American Antiquity ◽

10.1017/aaq.2016.5 ◽

2017 ◽

Vol 82 (1) ◽

pp. 151-167 ◽

Cited By ~ 1

Author(s):

Edward W. Herrmann ◽

Rebecca A. Nathan ◽

Matthew J. Rowe ◽

Timothy P. McCleary

Keyword(s):

Historic Preservation ◽

Large Scale ◽

Drainage Basin ◽

Holistic Approach ◽

Oral Traditions ◽

Archaeological Record ◽

Cultural Significance ◽

Field Training ◽

Field Investigations ◽

Management Capabilities

Bacheeishdíio (“Place Where Men Pack Meat”), now called Grapevine Creek in English, is the subject of Crow oral traditions that document the cultural significance of the landscape and celebrate centuries of bison hunting in the drainage. We report an ongoing, community-based project that integrates archaeological field training and research goals into a collaborative indigenous archaeology project supporting the expressed goal of the Crow Tribal Historic Preservation Office to prepare a district-level nomination for the Grapevine Creek drainage basin. This paper describes findings from field investigations that document buffalo jump locales, a previously unreported bison bonebed, and associated archaeological features in the drainage, grounding Crow oral traditions that document buffalo jumps and large-scale bison hunts firmly into the landscape. We take a holistic approach that incorporates multiple lines of evidence to assess the archaeological record associated with bison jumps and bison hunting on the Crow Reservation in southern Montana. Results of this project include an enriched understanding of the Grapevine Creek archaeological record, greater awareness of buffalo hunting strategies on the northwest Plains, and, through field training, enhanced cultural resource management capabilities for the Crow Tribal Historic Preservation Office.

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