A unified dynamic scaling property for the unified hybrid network theory framework

2013 ◽  
Vol 9 (2) ◽  
pp. 240-245 ◽  
Author(s):  
Qiang Liu ◽  
Jin-Qing Fang ◽  
Yong Li
Keyword(s):  
Network Theory ◽  
Hybrid Network ◽  
Dynamic Scaling ◽  
Scaling Property ◽  
Theory Framework

Some characteristics of supernetworks based on unified hybrid network theory framework

2017 ◽  
Vol 28 (05) ◽  
pp. 1750057 ◽  
Author(s):  
Qiang Liu ◽  
Jin-Qing Fang ◽  
Yong Li
Keyword(s):  
Network Theory ◽  
Hot Spot ◽  
Reference Value ◽  
Hybrid Network ◽  
Theoretical Research ◽  
Network Characteristics ◽  
Single Complex ◽  
Application Potential ◽  
New Phenomena ◽  
Theory Framework

Comparing with single complex networks, supernetworks are more close to the real world in some ways, and have become the newest research hot spot in the network science recently. Some progresses have been made in the research of supernetworks, but the theoretical research method and complex network characteristics of supernetwork models are still needed to further explore. In this paper, we propose three kinds of supernetwork models with three layers based on the unified hybrid network theory framework (UHNTF), and introduce preferential and random linking, respectively, between the upper and lower layers. Then we compared the topological characteristics of the single networks with the supernetwork models. In order to analyze the influence of the interlayer edges on network characteristics, the cross-degree is defined as a new important parameter. Then some interesting new phenomena are found, the results imply this supernetwork model has reference value and application potential.

scholarly journals Dynamic Scaling of Manipulator Trajectories

1984 ◽  
Vol 106 (1) ◽  
pp. 102-106 ◽  
Author(s):  
J. M. Hollerbach
Keyword(s):  
Movement Speed ◽  
Dynamic Scaling ◽  
Manipulator Dynamics ◽  
Scaling Property ◽  
Time Scaling

A fundamental time-scaling property of manipulator dynamics has been identified that allows modification of movement speed without complete dynamics recalculation. By exploiting this property, it can be determined whether a planned trajectory is dynamically realizable given actuator torque limits, and if not, how to modify the trajectory to bring it within dynamic and actuating constraints.

Failure to Launch

2015 ◽  
Vol 7 (4) ◽  
pp. 1-13
Author(s):  
Samiaji Sarosa ◽  
Arthur Tatnall
Keyword(s):  
Network Theory ◽  
Web Application ◽  
Actor Network Theory ◽  
Fixed Time ◽  
Application Development ◽  
Time Line ◽  
Actor Network ◽  
Development Failure ◽  
Human Actors ◽  
Theory Framework

One of the main causes of delayed and failed information systems project development is scope creep. The increasing number of features demanded by stakeholders to be built into the applications within a fixed time limit is a recipe for failure. This article looks into the process of a web application development failure, where scope creep was deemed as the main cause. An in depth look into the time line of the project also reveal another cause, which was the failure of the application itself along with the platform (hardware and software) to actually execute the software. It is believed that an Actor-Network Theory framework is appropriate to analyse this case where a number if both human and non-human actors were involved. Data for this research was collected using participative observation. An analysis was conducted to find patterns of negotiations and communications between all the stakeholders during the design process. Actor-Network Theory was used to explain the power plays between actors. A model was constructed showing all the actors (stakeholders) and how the interplay among them developed.

scholarly journals Identification of common points in hybrid geodetic networks to determine vertical movements of the Earth’s crust

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Kamil Kowalczyk ◽  
Anna Maria Kowalczyk ◽  
Jacek Rapiński
Keyword(s):  
Network Theory ◽  
Hybrid Networks ◽  
Hybrid Network ◽  
Scale Free Network ◽  
Regional Network ◽  
Vertical Movements ◽  
Scale Free ◽  
Use Of Data ◽  
Free Network ◽  
Gnss Observations

Abstract Simultaneous use of data repeated levelling measurements and continuous GNSS observations allows increasing the spatial resolution of geodynamics models. For this purpose, it is necessary to create a single network, a so-called hybrid network. This paper aims at examining the possibility of using scale-free network theory to determine the most relevant common points in hybrid networks using the distance criterion. Used on European network points: UELN (United European Levelling Network) and EPN (European Permanent GPS Network) and the regional network. In the hybrid network (UELN + EPN), 18 pseudo-nodal points with the highest number of links were identified. The accepted distance criterion shows that about 90 % of the EPN points can be used as common points. The application of the scale-free network theory allows determining the significance of points in a hybrid network.

scholarly journals Delimiting the boundaries of sesamoid identities under the network theory framework

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9691 ◽  
Author(s):  
Gabriela Fontanarrosa ◽  
Jessica Fratani ◽  
Miriam C. Vera
Keyword(s):  
Network Theory ◽  
Morphological Evolution ◽  
Hierarchical Organization ◽  
Connectivity Pattern ◽  
New Approach ◽  
General Terms ◽  
General Network ◽  
Bone Structures ◽  
Open Question ◽  
Theory Framework

Sesamoid identity has long been the focus of debate, and how they are linked to other elements of the skeleton has often been considered relevant to their definition. A driving hypothesis of our work was that sesamoids’ nature relies deeply on their connections, and thus we propose an explicit network framework to investigate this subject in Leptodactylus latinasus (Anura: Leptodactylidae). Through the dissection of L. latinasus’ skeleton, we modeled its anatomical network where skeletal elements were considered nodes while joints, muscles, tendons, and aponeurosis were considered links. The skeletal elements were categorized into canonical skeletal pieces, embedded sesamoids, and glide sesamoids. We inquired about the general network characterization and we have explored further into sesamoid connectivity behavior. We found that the network is structured in a modular hierarchical organization, with five modules on the first level and two modules on the second one. The modules reflect a functional, rather than a topological proximity clustering of the skeleton. The 25 sesamoid pieces are members of four of the first-level modules. Node parameters (centrality indicators) showed that: (i) sesamoids are, in general terms, peripheral elements of the skeleton, loosely connected to the canonical bone structures; (ii) embedded sesamoids are not significantly distinguishable from canonical skeletal elements; and (iii) glide sesamoids exhibit the lowest centrality values and strongly differ from both canonical skeletal elements and embedded sesamoids. The loose connectivity pattern of sesamoids, especially glides, could be related to their evolvability, which in turn seems to be reflected in their morphological variation and facultative expression. Based on the connectivity differences among skeletal categories found in our study, an open question remains: can embedded and glide sesamoids be defined under the same criteria? This study presents a new approach to the study of sesamoid identity and to the knowledge of their morphological evolution.

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