Simulation on the fiber arrangement and distribution in the drafting zone

2021 ◽  
pp. 004051752110471
Author(s):  
Na Sun
Keyword(s):  
Real Time ◽  
Dynamic Process ◽  
Linear Density ◽  
Theoretical Foundation ◽  
Weight Distributions ◽  
Fiber Arrangement ◽  
Spinning Process ◽  
Straight Fiber ◽  
Card Sliver

Roller drafting is an indispensable and fundamental procedure in attenuating the sliver to an adequate linear density during the spinning process. In this study, the drafting dynamic process was reflected in the arrangement containing hooked fibers and straight fibers, and the fiber straightness in the drafting zone in real-time. The drafting process was implemented from the initiation of the sliver head moving into the drafting zone to the achievement of the straightening process for all fibers in the sliver. The developed model demonstrated that the simulated weight distributions of various fibers, including the total fibers, back fibers, front fibers and floating fibers, were more in line with the actual results than the simulative ones based on the previous drafting model with the simulation of the straight fiber arrangement in the sliver. In conclusion, the drafting model with the application of the hooked fiber arrangement was effective and precise in quantizing the drafting process of a sliver with many hooked fibers, such as a cotton card sliver. Moreover, the drafting model can offer the theoretical foundation for setting the drafting parameters from the perspective of the distributions of slow-floating fibers and fast-floating fibers.

Modeling fiber arrangement and distribution during the roller drafting process

2019 ◽  
Vol 89 (19-20) ◽  
pp. 4295-4305 ◽  
Author(s):  
Na Sun ◽  
Chongwen Yu ◽  
Jianping Yang
Keyword(s):  
High Velocity ◽  
Linear Density ◽  
Gauge Length ◽  
Mean Velocity ◽  
Point Distribution ◽  
Distribution Form ◽  
Fiber Arrangement ◽  
Spinning Process ◽  
The Mean ◽  
Velocity Motion

During the spinning process, the roller drafting operation plays a significant role in attenuating the sliver to an appropriate linear density. In this study, the model of fiber arrangement was applied to simulating the roller drafting process in order to shed light on the sliver dynamic behavior in the drafting zone. The drafting process was operated from the high-velocity motion of the first accelerated fiber to the high-velocity motion of the last accelerated fiber. The proposed model showed that the simulated sliver attenuation processes were highly corresponded to the actual sliver attenuation results. In addition, the results revealed that the draft ratio, gauge length, input sliver linear density and accelerated-point distribution form had effective influences on the attenuation curves of sliver linear density, whilst the delivery speed scarcely had any effect. The fiber distributions of various forms were also investigated specifically and quantitatively from the fiber arrangement during the drafting procedure in real time. Furthermore, the sliver dynamic was also described by the mean and CV of fiber velocities within the drafting zone. The obtained simulation results demonstrated that the draft ratio, gauge length and delivery speed had a bearing on the mean velocity of fibers, while the CV of fiber velocities was significantly influenced by the draft ratio, gauge length and input sliver linear density. Besides, the distribution pattern has a valuable contribution to the mean and CV of fiber velocities. In consequence, the new drafting model was validated to be effective in quantizing the drafting process.

scholarly journals Where You End and I Begin: Cognition and Continuity in Experimental Improvised Music and Dance

2013 ◽  
Vol 8 (2) ◽  
Author(s):  
Christopher Williams ◽  
Martin Sonderkamp
Keyword(s):  
Everyday Life ◽  
Inner Ear ◽  
Real Time ◽  
Cognitive Processes ◽  
Feedback Loop ◽  
Theoretical Foundation ◽  
Situated Cognition ◽  
Program Notes ◽  
Improvised Music

When we improvise together in music and dance, our bodies, instruments, and environments not only interact; they become mutually dependent. A bassist's shoulder shifts, bow slides, instrument rings . . . vibrations bounce off the walls, reach the dancer's inner ear, filling the lungs, lunging toward the bassist's shoulder: these sounds, movements, spaces, and perceptions form a real-time feedback loop that blurs where you end and I begin. Recent research in embodied and situated cognition by scholars such as Clark and Chalmers (1998), Gallagher (2005, 2007), Hutchins (1995), Noë (2004), and Suchman (2007) provides a theoretical foundation for formalizing this continuity. This literature has inspired us to reconsider how cognitive processes we tacitly know within a specific aesthetic framework are in fact at work throughout everyday life. In four videos taken from an hour-long studio session recorded in February 2012, we explore these processes once again in our own practice, and offer reflections in the form of program notes that invite the audience to perform these connections themselves.

Research on PCS Real-Time System Based on Integrated Control and Simulation

2015 ◽  
Vol 743 ◽  
pp. 164-167
Author(s):  
S. Liu ◽  
S.S. Shi ◽  
Z.W. Zhang ◽  
J.T. Chen ◽  
Z. Wang
Keyword(s):  
Real Time ◽  
Dynamic Process ◽  
Control Algorithm ◽  
Control Method ◽  
Integrated Control ◽  
Simulation Design ◽  
Time System ◽  
Real Time System ◽  
Time Simulation ◽  
And Control

The principle and control method of PCS circuit based on DSP2812 are introduced.The unified model of equations and simulation is built based on the topology of the circuit.The real-time simulation and directly generation of the control code is implemented using Embedded Coder of MATLAB toolbox.The integrated control and simulation design of control algorithm and dynamic process of PCS are implemented.

scholarly journals The role of innovation narratives in accomplishing organizational ambidexterity

2020 ◽  
pp. 147612701989723 ◽  
Author(s):  
Mairi Maclean ◽  
Charles Harvey ◽  
Benjamin D Golant ◽  
John AA Sillince
Keyword(s):  
Real Time ◽  
Dynamic Process ◽  
Top Management Team ◽  
Management Team ◽  
Top Management ◽  
Organizational Ambidexterity ◽  
Top Executives ◽  
Exploration Exploitation ◽  
Polyphonic Model

Persistent tensions arising from the exploration–exploitation paradox continuously threaten the accomplishment of organizational ambidexterity. Structural, contextual, and sequential solutions designed to alleviate these tensions dominate the ambidexterity literature. None of these adequately explains how top executives implement tension-alleviating managerial initiatives or how they respond in real time to tension-induced organizational perturbations. In this article, through analysis of top management team speeches at Procter & Gamble over a 15-year period, we show how the construction and communication of four innovation narratives—contextualizing, mutualizing, dramatizing, and focalizing—reduced tensions and enhanced organizational ambidexterity. We demonstrate the importance of top management team reflexivity in devising and communicating performative narratives, illustrate the polyphonic model of narrative strategizing, and present a cyclical model suggesting that the accomplishment of organizational ambidexterity is an ongoing dynamic process.

Dynamic process model for identifying modified data using mobile agents in real time ETL processes

2013 ◽  
Vol 38 (1) ◽  
pp. 43-46 ◽  
Author(s):  
M. Mrunalini ◽  
T. V. Suresh Kumar ◽  
K. Rajani Kanth
Keyword(s):  
Real Time ◽  
Dynamic Process ◽  
Mobile Agents ◽  
Process Model

scholarly journals UPPAAL in 1995

1996 ◽  
Vol 3 (60) ◽  
Author(s):  
Johan Bengtsson ◽  
Kim G. Larsen ◽  
Fredrik Larsson ◽  
Paul Pettersson ◽  
Wang Yi
Keyword(s):  
Real Time ◽  
Case Studies ◽  
Theoretical Foundation ◽  
Timed Automata ◽  
Automatic Verification ◽  
Real Time Systems ◽  
The Past ◽  
Liveness Properties ◽  
Time Systems

UPPAAL is a tool suite for automatic verification of safety and<br />bounded liveness properties of real-time systems modeled as networks of timed automata<br />[12, 9, 4], developed during the past two years. In this paper, we summarize<br />the main features of UPPAAL in particular its various extensions developed in 1995<br />as well as applications to various case-studies, review and provide pointers to the<br />theoretical foundation.

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