scholarly journals Visual Web-Oriented Environment of Dynamic Control of Data Flow in Campus of Software Defined Networks

2019 ◽  
Vol 26 (1) ◽  
pp. 63-74 ◽  
Author(s):  
Vyacheslav P. Koryachko ◽  
Dmitry A. Perepelkin ◽  
Maria A. Ivanchikova ◽  
Vladimir S. Byshov
Keyword(s):  
Dynamic Control ◽  
Software Test ◽  
Software Systems ◽  
Software Defined Networks ◽  
Campus Network ◽  
Software Infrastructure ◽  
Data Flows ◽  
Uml Class Diagram ◽  
Effective Network ◽  
And Control

Nowadays new innovative approaches based on the technology of software defined networks (SDN) are gaining popularity in the field of computer networks (CN). SDN provide a flexible approach to the processing and control of data flows in CN by separating the control plane and data plane, as well as centralizing the representation of the entire network. In this paper, we propose a software infrastructure and a visual web-oriented environment (SIVE) for dynamic control of data flows in campus SDN based on OpenFlow protocol. It was proposed to use the SIVE as an integrated segment of the campus network of Ryazan State Radio Engineering University. The aim of the work is the development of the SIVE architecture in the form of UML class diagram description, as well as the creation of software methods for organizing effective network interaction of various software systems in SDN based on OpenFlow protocol. A hardware-software test bench based on HP Aruba 2920-24G equipment was developed to confirm the efficiency and reliability of the proposed SIVE. The offered SIVE is the basis for the development of a large class of software systems and SDN components based on OpenFlow protocol.

Digital Uncanny

2019 ◽  
Author(s):  
Kriss Ravetto-Biagioli
Keyword(s):  
Feedback Loop ◽  
Aesthetic Experience ◽  
Software Systems ◽  
Repressed Memories ◽  
Experimental Art ◽  
The Uncanny ◽  
Art Works ◽  
Data Flows ◽  
Human Gestures ◽  
New Type

We are confronted with a new type of uncanny experience, an uncanny evoked by parallel processing, aggregate data, and cloud-computing. The digital uncanny does not erase the uncanny feeling we experience as déjà vu or when confronted with robots that are too lifelike. Today’s uncanny refers to how nonhuman devices (surveillance technologies, algorithms, feedback, and data flows) anticipate human gestures, emotions, actions, and interactions, intimating we are machines and our behavior is predicable because we are machinic. It adds another dimension to those feelings we get when we question whether our responses are subjective or automated—automated as in reducing one’s subjectivity to patterns of data and using those patterns to present objects or ideas that would then elicit one’s genuinely subjective—yet effectively preset—response. This anticipation of our responses is a feedback loop we have produced by designing software that studies our traces, inputs, and moves. Digital Uncanny explores how digital technologies, particularly software systems working through massive amounts of data, are transforming the meaning of the uncanny that Freud tied to a return of repressed memories, desires, and experiences to their anticipation. Through a close reading of interactive and experimental art works of Rafael Lozano-Hemmer, Bill Viola, Simon Biggs, Sue Hawksley, and Garth Paine, this book is designed to explore how the digital uncanny unsettles and estranges concepts of “self,” “affect,” “feedback,” and “aesthetic experience,” forcing us to reflect on our relationship with computational media and our relationship to others and our experience of the world.

scholarly journals An Overview on SDN and NFV Security Orchestration in Cloud Network Environment

2021 ◽  
Vol 5 (1) ◽  
pp. 20-27
Author(s):  
Israa T. Aziz ◽  
Ihsan H. Abdulqadder
Keyword(s):  
Software Defined Networking ◽  
Computer Networking ◽  
Software Defined Networks ◽  
Network Environment ◽  
Security Risks ◽  
Cloud Networks ◽  
Cloud Networking ◽  
Cloud Network ◽  
And Control

Cloud networks are being used in most industries and applications in the current era. Software-defined networking has come up as an alternative tool and mechanism to follow and implement in a cloud networking environment in place of the traditional networking approaches. This paper includes the security aspects of computer networking concerning the cloud networking environment and software-defined networks. The security risks and vulnerabilities have been listed and described in this work, and the measures that may be adapted to detect, prevent, and control the same. The use of figures, diagrams, and codes has been done as applicable.

scholarly journals A light tunable differentiation system for the creation and control of consortia in yeast

2021 ◽  
Author(s):  
Chetan Aditya ◽  
François Bertaux ◽  
Gregory Batt ◽  
Jakob Ruess
Keyword(s):  
Dynamic Control ◽  
Division Of Labour ◽  
Microbial Consortia ◽  
Continuous Cultures ◽  
Straightforward Manner ◽  
Single Strain ◽  
Differentiation Strategy ◽  
The Creation ◽  
And Control ◽  
Immense Potential

Artificial microbial consortia seek to leverage division-of-labour to optimize function and possess immense potential for bioproduction. Co-culturing approaches, the preferred mode of generating a consortium, remain limited in their ability to give rise to stable consortia having finely tuned compositions. Here, we present an artificial differentiation system in budding yeast capable of generating stable microbial consortia with custom functionalities from a single strain at user-defined composition in space and in time based on optogenetically-driven genetic rewiring. Owing to fast, reproducible, and light-tunable dynamics, our system enables dynamic control of consortia composition in continuous cultures for extended periods. We further demonstrate that our system can be extended in a straightforward manner to give rise to consortia with multiple subpopulations. Our artificial differentiation strategy establishes a novel paradigm for the creation of complex microbial consortia that are simple to implement, precisely controllable, and versatile to use.

Measuring the Progress of a System Development

2014 ◽  
pp. 1415-1439
Author(s):  
Marta (Plaska) Olszewska ◽  
Marina Waldén
Keyword(s):  
Formal Methods ◽  
Design Process ◽  
Formal Specification ◽  
System Development ◽  
Structural Complexity ◽  
Software Systems ◽  
System Construction ◽  
Design Decisions ◽  
And Control

For most of the developers and managers, the structure and the behaviour of software systems represented in a graphical manner is more understandable than a formal specification of a system or than plain code. Our previous work combined the intuitiveness of UML with the development rigour brought by formal methods and created progress diagrams. In progress diagrams, the design decisions within a system refinement chain are assisted by the application of patterns and illustrated in a comprehensible and compact manner. In order to rigorously assess and control the design process, we need to thoroughly monitor it. In this chapter we show how the application of generic refinement patterns is reflected in measurements. We establish measures for the evaluation of the design progress of the system, where the progress diagrams are assessed from the size and structural complexity perspective. Our motivation is to support the system developers and managers in making the design decisions that regard the system construction.

scholarly journals Architecture of homeostatic security control for digital manufacture systems based on software-defined networks

2018 ◽  
Vol 44 ◽  
pp. 00067
Author(s):  
Evgeny Pavlenko ◽  
Dmitry Zegzhda
Keyword(s):  
Control System ◽  
System Architecture ◽  
Control Unit ◽  
Software Defined Networks ◽  
Decision Making Unit ◽  
Security Control ◽  
Protection And Control ◽  
And Control ◽  
Control System Architecture ◽  
Digital Manufacture

The authors have offered the homeostatic control system architecture for digital manufacture security based on the software-defined network technology. We have highlighted the development features of digital manufacture systems and defined the technology advantages of software- defined networks, which allow these networks to be successfully applied with flexible and adaptive topology for a highly efficient new generation of cyber-physical systems. We have also described the main operating principles of software-defined networks in digital manufacture systems. A description of homeostatic security control technology, which includes a combination of engines to provide stability of the system’s internal environment and structural and functional resistance to external disturbances, is provided. We have proposed and described in detail the homeostatic security control system architecture including three generalized components: monitoring unit, decision-making unit, protection and control unit.

Dynamic Flexoelectric Actuation and Vibration Control of Beams

2018 ◽  
Vol 140 (4) ◽  
Author(s):  
Mu Fan ◽  
Bolei Deng ◽  
Hornsen Tzou
Keyword(s):  
Experimental Data ◽  
Dynamic Control ◽  
Longitudinal Direction ◽  
Bottom Surface ◽  
Internal Stresses ◽  
Control Effect ◽  
Flexoelectric Effect ◽  
Control Moment ◽  
Fixed End ◽  
And Control

A flexoelectric cantilever beam actuated by the converse flexoelectric effect is evaluated and its analytical and experimental data are compared in this study. A line-electrode on the top beam surface and a bottom surface electrode are used to generate an electric field gradient in the beam, so that internal stresses can be induced and applied to distributed actuations. The dynamic control effectiveness of the beam is investigated with a mathematical model and is validated by laboratory experiments. Analyses show that the actuation stress induced by the converse flexoelectric effect is in the longitudinal direction and results in a bending control moment to the flexoelectric beam since the stress in the thickness is inhomogeneous. It is found that thinner line-electrode radius and thinner flexoelectric beam lead to larger control effects on the beam. The position of the line-electrode on the top surface of the beam also influences the control effect. When the line-electrode is close to the fixed end, it induces a larger tip displacement than that is close to the free end. Analytical results agree well with laboratory experimental data. This study of flexoelectric actuation and control provides a fundamental understanding of flexoelectric actuation mechanisms.

Modeling and Control of Wheel Motor Based Articulated Vehicle System

2019 ◽  
Author(s):  
Heeseong Kim ◽  
Taehyun Shim ◽  
Byungjun Sung
Keyword(s):  
Control System ◽  
Dynamic Control ◽  
Modeling And Control ◽  
Yaw Control ◽  
Articulated Vehicle ◽  
Vehicle Systems ◽  
Vehicle Dynamic Control ◽  
And Performance ◽  
Traction System ◽  
And Control

Abstract This paper investigates an effectiveness of vehicle dynamic control (VDC) system based on torque vectoring technique using in-wheel-motors to improve the performance of articulated vehicle systems. A 10 degree-of-freedom (DOF) articulated vehicle model including a tractor and a single axle trailer has been developed and its responses are validated with commercial vehicle software of Trucksim. This model includes a nonlinear tire model (MF tire), a hydraulic damping at the hitch, and a traction system using in-wheel-motors at the trailer axle. In this paper, a yaw control system is developed to track the reference yaw rate with application of yaw moment at the trailer axle using torque distribution of in-wheel-motors. The effectiveness of the proposed control system is validated through simulation of sinusoidal steering maneuver on high mu and slippery road conditions. The simulation results show that in-wheel-motors can improve safety and performance of articulate vehicle systems.

Software Defined Networks—A Network Programme and Its Dynamic Services

2020 ◽  
Vol 17 (9) ◽  
pp. 3927-3933
Author(s):  
B. Vineetha ◽  
M. Sumana
Keyword(s):  
Control System ◽  
Load Balancing ◽  
Network Services ◽  
Software Defined Networks ◽  
Control Plane ◽  
Service Function ◽  
Flow Through ◽  
And Control ◽  
Dynamic Services ◽  
Network Component

As network component is increasing, the managing and controlling systems from a central based control system becomes very complex. The technology used to resolve this is called Software Defined Networks (SDN) which helps to manage and control the system through programs. SDN stands as a developing technique that divides single network as data and control plane. The benefit of SDN are provides more performance, managing the packet flow through diverse dealer’s organization components. The complexities continued to raise when implementing network services both from technical and organizational views. Here in this paper generally focuses on how organizations can deal with the challenge of introducing service chaining and developing critical network services by using the technology SDN and also delivering diverse services of network to user in one system thus customers can fulfill their desire of services based on requests. The “Service Function Chaining” facility of SDN provides services like Load Balancing, Video Optimizing and Firewall.

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