scholarly journals An approach of modelling of the compaction of flax-carbon hybrid stack preforms

2021 ◽  
Author(s):  
Alexandre Vivet ◽  
Eric Tossou ◽  
Florian Gehring ◽  
Olivier Mareschal
Keyword(s):  
Strain State ◽  
Body Movement ◽  
Pressure Sensitivity ◽  
Compaction Behavior ◽  
Surrounding Environment ◽  
Three Stages ◽  
New Phenomena ◽  
Behaviour Law ◽  
Compaction Behaviour ◽  
Modelling Approach

A model, based on the Van Wyk model, is developed to predict the compaction behaviour of stack sequence of dry fabric plies, and is used a set of 3 parameters (stiffness k, pressure sensitivity n and initial fibre ratio Vf0) with P = (k(Vf- Vf))n. The method originality is to construct the behaviour law of a complex stack sequence by the assembly of elementary behaviours. Elementary behaviours are identified using initial experimental compaction tests and are linked to the interaction of a fabric ply with its surrounding environment (another fabric ply or the surface of the compressive mould). This proposed modelling approach have been tested on various carbon, flax and carbon/flax hybrid stack sequence, and seems efficient to predict their compaction behaviour. Its validity is limited to the range of stack sequence of a reduced number of plies. With stack sequence made of numerous fabric plies, some new phenomena must be taken into account. In complement we proposed a method to decompose the compaction behavior curve into three stages (rigid body movement of the fabric plies, nesting of the plies, densification). This method is relevant to compare easily some compaction curves and to evaluate the internal strain state of a stack sequence.

scholarly journals Tibetan Buddhism and the formation of ecological consciousness: a view from Buryatia

2018 ◽  
Vol 55 ◽  
pp. 05004
Author(s):  
K. Bagaeva ◽  
D. Tsyrendorzhieva ◽  
O. Balchindorzhieva ◽  
M. Badmaeva
Keyword(s):  
Tibetan Buddhism ◽  
Ecological Civilization ◽  
Ecological Consciousness ◽  
Basic Principles ◽  
Surrounding Environment ◽  
The World ◽  
Human Understanding ◽  
Universal Dependence ◽  
Three Stages ◽  
Living Nature

Technicization of human and society, active development of technogenic civilization leads to gradual separation from moral values and principles. These values include ideas of unity and harmony of human with nature, with the surrounding environment, and reasonable, moderate attitude towards natural resources. We believe that humanity should move from the industrial to ecological civilization. The foundations of a new ecophilosophy should become holistic principles, representations of philosophy in general and Buddhism in particular. We outlined basic principles and methods for improving personality of altruistic ethics of Mahayana Buddhism that contribute to human understanding of inseparability, interconnection with the world. We focus on the central Buddhist concept – the absence of an individual ‘I’ that is understood as necessity of recognizing oneself as a separate empirical individual. That is confirmed by a translation of the text PrajnaParamitaHridaya Sutra from Tibetan language. The paper analyzes three types of spiritual personality that correspond to three stages of the Path to awakening. Each stage is a step towards the formation of subjectless consciousness, that is, awareness of universal dependence and responsibility for their actions. The paper argues that for ecological consciousness it is important to form an understanding that the main reason for human existence in not the technosphere, not the economy, but the living nature.

scholarly journals Culture and Society in the Digital Age

Information ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 68
Author(s):  
Ilya Levin ◽  
Dan Mamlok
Keyword(s):  
Cultural Studies ◽  
General Model ◽  
Digital Age ◽  
Theoretical Framework ◽  
Cultural Changes ◽  
Digital Revolution ◽  
Digital Society ◽  
Surrounding Environment ◽  
New Phenomena

This paper aims to examine a theoretical framework of digital society and the ramifications of the digital revolution. The paper proposes that more attention has to be paid to cultural studies as a means for the understanding of digital society. The approach is based on the idea that the digital revolution’s essence is fully manifested in the cultural changes that take place in society. Cultural changes are discussed in connection with the digital society’s transformations, such as blurring the distinction between reality and virtuality and among people, nature, and artifacts, and the reversal from informational scarcity to abundance. The presented study develops a general model of culture. This model describes the spiritual, social, and technological facets of culture. Such new phenomena as individualization, transparisation, and so-called cognification (intellectualization of the surrounding environment) are suggested as the prominent trends characterizing the above cultural facets.

scholarly journals SOSIALISASI KEBIJAKAN KAWASAN TANPA ROKOK DI RSUD LUBUK PAKAM DELI SERDANG

2021 ◽  
Vol 1 (1) ◽  
pp. 208-212
Author(s):  
Balqis Wasliati ◽  
Ika Nur Saputri ◽  
Delita Br Panjaitan ◽  
Raisha Octavariny ◽  
Christina Octavia
Keyword(s):  
Health Workers ◽  
Health Impacts ◽  
Ministry Of Health ◽  
The Public ◽  
Surrounding Environment ◽  
Three Stages ◽  
Implementation Method ◽  
The Government ◽  
Smoking Control ◽  
And Control

Non-Smoking Area (KTR) is a policy made by the Ministry of Health to prevent and control the health impacts caused by smoking. Control of health impacts does not only apply to active smokers, but also passive smokers and the surrounding environment exposed to cigarette smoke. The implementation method with the socialization method is an understanding of the condition of smokers in Indonesia and about KTR. In addition, it was conducted with a question and answer session and interviews with health workers and visitors related to cigarettes and KTR. The implementation of this activity is divided into three stages, namely, planning, implementation and evaluation. All health workers and the public understand the dangers of smoking but still carry out smoking activities on the grounds of addiction to cigarettes. KTR socialization provided an understanding that Deli Serdang Regional Hospital had regulations to implement and support KTR issued by the government through the Ministry of Health.

scholarly journals FEM analysis of the manufacturing of hollow forgings from a tube billet

2021 ◽  
Vol 2130 (1) ◽  
pp. 012018
Author(s):  
T Bulzak ◽  
G Winiarski ◽  
Ł Wójcik ◽  
M Szala
Keyword(s):  
Wall Thickness ◽  
Manufacturing Process ◽  
Material Flow ◽  
Strain State ◽  
Fracture Criterion ◽  
Fem Analysis ◽  
Tube Billet ◽  
Three Stages

Abstract The study presents an analysis of the manufacturing process of a hollow forging. The process was proposed to consist of three stages. In the first stage (extrusion) wall thickness was reduced and the flange was formed. In the two subsequent stages the flange was formed. The material flow was examined using FEM. The issue of defect occurrence in the area of a hole caused by the material moving away from the mandrel was especially researched. Moreover, the strain state was analysed in the following forging operations. The distribution of the fracture criterion was presented. Moreover, a prediction of the forces necessary for the process to be performed in real conditions was carried out. The conclusion is that the proposed scheme of forming hollow forgings may be implemented in industrial conditions.

scholarly journals Robust Cooperative Multi-Vehicle Tracking with Inaccurate Self-Localization Based on On-Board Sensors and Inter-Vehicle Communication

Sensors ◽  
2020 ◽  
Vol 20 (11) ◽  
pp. 3212 ◽  
Author(s):  
Xiaobo Chen ◽  
Jianyu Ji ◽  
Yanjun Wang
Keyword(s):  
Intelligent Vehicles ◽  
Vehicle Tracking ◽  
Vehicle Communication ◽  
Bayes Inference ◽  
Surrounding Environment ◽  
Covariance Intersection ◽  
Three Stages ◽  
Cooperative Tracking ◽  
Cooperative Vehicles ◽  
Localization Information

The fusion of on-board sensors and transmitted information via inter-vehicle communication has been proved to be an effective way to increase the perception accuracy and extend the perception range of connected intelligent vehicles. The current approaches rely heavily on the accurate self-localization of both host and cooperative vehicles. However, such information is not always available or accurate enough for effective cooperative sensing. In this paper, we propose a robust cooperative multi-vehicle tracking framework suitable for the situation where the self-localization information is inaccurate. Our framework consists of three stages. First, each vehicle perceives its surrounding environment based on the on-board sensors and exchanges the local tracks through inter-vehicle communication. Then, an algorithm based on Bayes inference is developed to match the tracks from host and cooperative vehicles and simultaneously optimize the relative pose. Finally, the tracks associated with the same target are fused by fast covariance intersection based on information theory. The simulation results based on both synthesized data and a high-quality physics-based platform show that our approach successfully implements cooperative tracking without the assistance of accurate self-localization.

scholarly journals The Role of Islamic Phylantropic Institutions in Distribution of ZIS During Ramadhan to the Community in Deme 2 Village North Gorontalo, Indonesia

2021 ◽  
Vol 1 (1) ◽  
pp. 34-45
Author(s):  
Siti Harnia
Keyword(s):  
Research Method ◽  
Field Research ◽  
Local Area ◽  
Contextual Analysis ◽  
Data Presentation ◽  
Surrounding Environment ◽  
Three Stages ◽  
The Government ◽  
The Village

Philanthropy institutions are forums for the management of zakat, infaq, and alms to utilize zakat, infaq, and alms more maximum will be managed by the Government in this case Baznas which has a collection unit up to the village level. To have the option to increase the distribution of zakat, infaq and zakat, amil zakat organizations must gain the trust of the local area. An important component of a reliable institution is the responsibility it demonstrates. Based on this, this study intends to find out how the role of the Islamic Philanthropy Institute in the delivery of ZIS in the month of Ramadan by contextual analysis in Deme 2 Village, East Sumalata Region, North Gorontalo Regency. The research method used is field research . The researcher uses aapproach phenomenological including the latest literature from library materials and journals, data is collected through observation, documents and interviews, then the data is analyzed sequentially and interactionist which consists of three stages, namely: ) Data reduction, 2) Data presentation, 3) Conclusion drawing or verification. The results of the study reveal that the existence of this philanthropic institution is very beneficial for individuals in Deme 2 Village, East Sumalata Region, North Gorontalo Regency. Through various assistance provided by the institution, it is possible to build a strengthening of the nearest network. If the beneficiary have difficulty in meeting their daily needs, after receiving the assistance provided by the agency they have the option of meeting their daily needs during the month of Ramadan and especially during the holidays. Eid Al-Fitr. So that with the assistance provided by the Institute, it can empower the surrounding environment.

Design of objective lens for 200-kV high-resolution electron microscopes

1983 ◽  
Vol 41 ◽  
pp. 314-315
Author(s):  
K. Tsuno ◽  
T. Honda ◽  
Y. Harada ◽  
M. Naruse
Keyword(s):  
Optical Properties ◽  
Computer Technology ◽  
Axial Magnetic Field ◽  
Chromatic Aberration ◽  
Objective Lens ◽  
Resolution Electron ◽  
Correction Of Astigmatism ◽  
Three Stages ◽  
Electron Microscopes ◽  
Stage 1

Developement of computer technology provides much improvements on electron microscopy, such as simulation of images, reconstruction of images and automatic controll of microscopes (auto-focussing and auto-correction of astigmatism) and design of electron microscope lenses by using a finite element method (FEM). In this investigation, procedures for simulating the optical properties of objective lenses of HREM and the characteristics of the new lens for HREM at 200 kV are described.The process for designing the objective lens is divided into three stages. Stage 1 is the process for estimating the optical properties of the lens. Firstly, calculation by FEM is made for simulating the axial magnetic field distributions Bzc of the lens. Secondly, electron ray trajectory is numerically calculated by using Bzc. And lastly, using Bzc and ray trajectory, spherical and chromatic aberration coefficients Cs and Cc are numerically calculated. Above calculations are repeated by changing the shape of lens until! to find an optimum aberration coefficients.

Formation of Dislocation Channels in Neutron Irradiated Molybdenum

1972 ◽  
Vol 30 ◽  
pp. 672-673
Author(s):  
S. Mahajan
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ambient Temperature ◽  
Room Temperature ◽  
Channel Formation ◽  
Early Stages ◽  
Transmission Electron ◽  
Three Stages ◽  
Two Stages ◽  
Polycrystalline Molybdenum

The evolution of dislocation channels in irradiated metals during deformation can be envisaged to occur in three stages: (i) formation of embryonic cluster free regions, (ii) growth of these regions into microscopically observable channels and (iii) termination of their growth due to the accumulation of dislocation damage. The first two stages are particularly intriguing, and we have attempted to follow the early stages of channel formation in polycrystalline molybdenum, irradiated to 5×1019 n. cm−2 (E > 1 Mev) at the reactor ambient temperature (∼ 60°C), using transmission electron microscopy. The irradiated samples were strained, at room temperature, up to the macroscopic yield point.Figure 1 illustrates the early stages of channel formation. The observations suggest that the cluster free regions, such as A, B and C, form in isolated packets, which could subsequently link-up to evolve a channel.

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