scholarly journals On Vessel to Vessel Interaction during Head-on encounter

10.18048/5303 ◽  
2017 ◽  
Vol 53 (1) ◽  
pp. 35-52
Author(s):  
David Brčić ◽  
Mate Barić ◽  
Robert Mohović
Keyword(s):  
Interaction Force ◽  
Post Processing ◽  
Strong Force ◽  
Main Factors ◽  
Force Components ◽  
Mathematical Relations ◽  
Relevant Factors ◽  
Interaction Phenomenon

Interaction of two vessels during head-on encounter acts as short and strong force. Consequences can reflect on vessels’ handling causing unwanted effects. This phenomenon was elaborated in the paper, considering influence of interaction force and its dependence on main recognized factors: mutual vessels’ distance, speed and depth under the keel. Besides interaction force components, analyses comprised other relevant factors as vessel’ heading, course alterations and drift of vessel due to interaction. Planned and, according to main factors, defined scenarios were conducted in navigational simulator with usage of navigational areas creation tools. After simulations and data post-processing, obtained results were summarized. Correlation of results with mathematical relations describing interaction was conducted. In the conclusion chapter, final inferences are stated, with some of observations which in the opinion of authors are significant. Conducted analyses, obtained results and derived conclusions represent basis for further research, thus future activities regarding interaction phenomenon are proposed.

Development of an Instrumented Surgical Setup for Quantifying Displacement and Force in Surgical Dissection

2015 ◽  
Author(s):  
K. C. Wang ◽  
K. Grant ◽  
Q. Sun ◽  
L. S. Gan ◽  
K. Zareinia ◽  
...  
Keyword(s):  
Brain Structures ◽  
Interaction Force ◽  
Computational Techniques ◽  
Interaction Forces ◽  
Mean Values ◽  
Surgical Simulators ◽  
Tissue Interaction ◽  
Force Components ◽  
Sylvian Cistern ◽  
Force Data

Knowledge of positional and force properties of surgical dissection in neurosurgery is essential in developing simulation platforms for neurosurgical training such that realistic motion and perception can be conveyed to the trainee during practice. Most proposed models in literature utilize computational techniques to formulate required parameters. However, these models are not realistic enough compared to data obtained from experiments on real brain. Therefore, developing a setup to measure the position, orientation, and interaction forces will help researchers formulate realistic parameters. This paper presents the development of such a setup for quantification of displacements and tool-tissue interaction forces during performance of microsurgical tasks. A bipolar forceps is equipped with a set of force sensing elements to measure the tool-tissue interaction force components. The position and orientation of the forceps tips are measured by attaching a tracker to the bipolar forceps. To show proof-of-concept, an experienced surgeon and one assistant surgeon performed 35 neurosurgical tasks (320 trials) on a cadaver brain (previously-frozen) using the instrumented setup. Positional and force data of the bipolar forceps were recorded during surgical dissection of different brain structures. This paper reports results collected from two microsurgical tasks over 40 trials: dissection of sylvian cistern arachnoid (SCA) and dissection of middle cerebral artery (MCA). Results showed that the mean values of interaction forces during dissection of MCA were smaller than dissecting SCA. The maximum forces observed were 1.94 N and 1.75 N for SCA and MCA, respectively. The application of quantifying such parameters using the developed setup will be in training neurosurgery residents using surgical simulators in which the knowledge of brain tissue parameters is required to formulate the tissue model.

The Mathematical Models of the Best Adjusting of Shear Blade Clearance of Disk Shear in Cutting Plate

2010 ◽  
Vol 145 ◽  
pp. 26-30 ◽  
Author(s):  
Zhi Quan Huang ◽  
Qing Xue Huang
Keyword(s):  
Mathematical Models ◽  
Steel Plate ◽  
Iron And Steel ◽  
Blade Clearance ◽  
Thick Steel ◽  
Main Factors ◽  
And Control ◽  
First Time ◽  
Relevant Factors ◽  
Disk Shear

In this paper the main factors of impacting the quality in cutting the plate between the Shear blade clearance adjustment and control were analyzed, Focused on further analyzing all relevant factors on adjusting the Shear blade clearance , combined with the accumulated process parameters in production of Thick Steel Plate Plant of He Bei Wen Feng Iron and Steel Co., Ltd. Proposed for the first time the mathematical models of the best adjusting of Shear blade clearance of disk shear in cutting plate.

The Finite Element Imitate of the Best Adjusting of Shear Blade Clearance of Disk Shear in Cutting Plate

2011 ◽  
Vol 422 ◽  
pp. 836-841
Author(s):  
Xian Jia ◽  
Qing Wang ◽  
Zhi Quan Huang ◽  
Qing Xue Huang
Keyword(s):  
Finite Element ◽  
Process Parameters ◽  
Steel Plate ◽  
Blade Clearance ◽  
Thick Steel ◽  
Main Factors ◽  
And Control ◽  
First Time ◽  
Relevant Factors ◽  
Disk Shear

In this paper the main factors of impacting the quality in cutting the plate between the Shear blade clearance adjustment and control were analyzed, Focused on further analyzing all relevant factors on adjusting the Shear blade clearance , combined with the accumulated process parameters in production of one certain Thick Steel Plate Plant . Proposed for the first time the mathematical models of the best adjusting of Shear blade clearance of disk shear in cutting plate，and also make a imitate testing of finite element.

scholarly journals The Values of Physical Landscape in Accommodating Social Sustainability of Traditional Malay Settlement

2020 ◽  
Vol 5 (15) ◽  
pp. 405-412
Author(s):  
Najiha Jaffar ◽  
Nor Zalina Harun
Keyword(s):  
Publishing House ◽  
Social Sustainability ◽  
Public Spaces ◽  
Public Infrastructure ◽  
The Public ◽  
International Publishing ◽  
Main Factors ◽  
The Many ◽  
Open Access Article ◽  
Relevant Factors

Traditional settlements are one of the many valuable possessions in terms of history, customs, culture and architecture. However, modernization and progress have greatly altered the physical landscape and destroyed these important social spaces by replacing them with more modern public infrastructure. This study aims to investigate how the multiple physical aspects of public infrastructure and traditional settlement environment around Kuala Terengganu play a role in supporting the welfare of the community. This research using mixed-methodology, which includes observation, questionnaires and interviews. The size of the data was accumulated from 800 residents by using a questionnaire survey to recognize the relevant factors that shape social sustainability. The main findings shows the three main factors of public spaces; (i) sufficient facilities; (ii) accommodate a variety of activities; (iii) provide convenience to the public. Keywords: physical landscape; public spaces; public infrastructure; social sustainability; traditional settlement eISSN: 2398-4287© 2020. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia. DOI: https://doi.org/10.21834/ebpj.v5i15.1858.

scholarly journals Factors influencing peach farmer income in the province of Tungurahua, Ecuador

2018 ◽  
Vol 17 (2) ◽  
pp. 133
Author(s):  
William Viera ◽  
Alex Viera ◽  
Aníbal Martínez ◽  
Rosendo Jácome ◽  
Germán Ayala ◽  
...  
Keyword(s):  
Prunus Persica ◽  
Fruit Trees ◽  
Fruit Crop ◽  
Factors Influencing ◽  
Fruit Growing ◽  
Deciduous Fruit ◽  
Main Factors ◽  
Farmer Income ◽  
Sown Area ◽  
Relevant Factors

Tungurahua province has conditions suitable for growing deciduous fruit trees such as peach (Prunus persica L). This research aimed to identify the main factors influencing the production of this fruit crop and their effect on farmers income. Surveys were carried out directly to peach farmers in seven counties of Tungurahua such as Ambato, Cevallos, Mocha, Patate, Pelileo, Píllaro and Tisaleo. The results indicated that the most relevant factors were: farmer age, sown area, fruit selection, reason for fruit growing, type of production and production issues.

Mechanism of Microbiological Leaker Spoilage of Canned Foods: Biophysical Aspects

1980 ◽  
Vol 43 (6) ◽  
pp. 488-497 ◽  
Author(s):  
HENRIËTTE M. C. PUT ◽  
H. J. WITVOET ◽  
W. R. WARNER
Keyword(s):  
Critical Points ◽  
Bacterial Contamination ◽  
Cooling Water ◽  
Post Processing ◽  
Canned Foods ◽  
Main Factors ◽  
Guiding Principles ◽  
The Way

The three main factors in spoilage resulting from post-processing can handling operations are: (a) condition of the can double-seams, (b) presence of bacterial contamination in cooling water or on wet can runways and (c) can abuse due to poor operation or adjustment of the filled can handling equipment. The mechanism of bacterial reinfection and the way it is influenced by deviations in can construction or can handling procedures is discussed. Methods of preventing bacterial reinfection at the most critical points in the canning operations are given as well as certain guiding principles for canning practice. In addition, some remarks on physical aspects of reinfection of glass-packed foods are made briefly.

scholarly journals Developing the Romanian Organic Market: A Producer’s Perspective

2019 ◽  
Vol 11 (2) ◽  
pp. 467 ◽  
Author(s):  
Iulia Popa ◽  
Dan-Cristian Dabija
Keyword(s):  
Financial Support ◽  
Consumer Behaviour ◽  
Healthy Lifestyle ◽  
Organic Food ◽  
Vegetarian Diet ◽  
Factors Influencing ◽  
Organic Products ◽  
Purchasing Behaviour ◽  
Main Factors ◽  
Relevant Factors

Romania’s organic market increasingly resembles its Western counterparts: a vegetarian diet, disease prevention through consumption of organic food produced according to specific standards, preferring quality over quantity—all relevant factors influencing purchasing behaviour. It is the task of consumerist organisations to educate consumers on the benefits of the above factors, a process influenced by social and cultural trends, experience, lifestyle, motivations and preferences. The market is attractive to domestic producers offering an increasing assortment of organic food types. This paper aims to highlight the most relevant features of the rapidly expanding Romanian organic market from the perspective of organic producers. To this effect, it reviews the literature dealing with the main factors influencing consumer behaviour and attitudes. The qualitative research among producers reveals strategic directions pursued in order to understand and adapt to market characteristics and dynamics. The results allow better understanding of organic consumers’ behaviour in the emerging markets and highlight strategies to increase market success. Healthy lifestyle, desire to protect the environment, product quality and attractive prices are all important factors determining consumption of organic products. Whilst aware of these factors, producers point to the lack of education for developing an organic mentality and identifying organic products, poor distribution of products and lack of financial support across the entire logistics chain.

Numerical Simulation and Experimental Study of Flowfield Around a Bullet With a Partial Core

2011 ◽  
Vol 78 (5) ◽  
Author(s):  
Usiel S. Silva ◽  
Juan M. Sandoval ◽  
Luis A. Flores ◽  
Narcizo Muñoz ◽  
Víctor Hernández
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Impact Force ◽  
Fluid Dynamic ◽  
Flight Path ◽  
Post Processing ◽  
Flow Conditions ◽  
Main Factors ◽  
The Impact ◽  
Full Core

The geometry, density and velocity of a typical small caliber bullet, are the main factors that stabilize its flight path, range and the impact force; thus the weight variations can indicate the presence of geometrical irregularities or damages of the bullet core, affecting its dynamic characteristics. Computational finite element method (FEM) with the computational fluid dynamic (CFD) module was used for the numerical simulation of 7.62 mm bullets with partial core, subjected to different air flow conditions. Schlieren images were obtained and with the flow visualization principle, the behavior of the projectile during its flight path was determined. The results of the simulations and the experiments showed that in certain cases, bullets with partial core maintain a stable spin during flight without a considerable variation in its range, keeping constant speed conditions with respect to the full core bullets. The importance of this analysis is found in the fact that post processing activities can be implemented in certain ammunitions with imperfections to improve their use.

Linearity Analysis and Experimental Verification for Resistive Touch Screen Sensors

2014 ◽  
Vol 563 ◽  
pp. 161-166
Author(s):  
Shou Bin Liu ◽  
Jun Rong Mao
Keyword(s):  
Testing Machine ◽  
Touch Screen ◽  
Individual Factors ◽  
Ansys Software ◽  
Factors Affecting ◽  
Touch Sensor ◽  
Positioning Errors ◽  
Main Factors ◽  
Resistive Type ◽  
Mathematical Relations

Linearity is a critical parameter to describe positioning errors of touch screens. This paper focuses on a four-wire resistive-type touch screen sensor and tries to find the main factors affecting its linearity. By using the electric field simulation module of ANSYS software, node voltages of conductive layer were analyzed. The mathematical relations between the linearity and individual factors of touch sensor were established and the main factors affecting linearity were identified. Based on optimized sensor parameters, a set of 2.5 inch four-wire resistive touch screen sensors were manufactured and tested with a linearity testing machine. Experimental results show that simulation results and testing results on linearity satisfy the consistency criterion and the analysis results are reliable.

scholarly journals Non-Gaussian tail in the force distribution: a hallmark of correlated disorder in the host media of elastic objects

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Jazmín Aragón Sánchez ◽  
Gonzalo Rumi ◽  
Raúl Cortés Maldonado ◽  
Néstor René Cejas Bolecek ◽  
Joaquín Puig ◽  
...  
Keyword(s):  
Interaction Force ◽  
Vortex Structures ◽  
Weak Point ◽  
Type Ii Superconductors ◽  
Vortex Density ◽  
The Media ◽  
Science Problem ◽  
Force Components ◽  
Non Gaussian

Abstract Inferring the nature of disorder in the media where elastic objects are nucleated is of crucial importance for many applications but remains a challenging basic-science problem. Here we propose a method to discern whether weak-point or strong-correlated disorder dominates based on characterizing the distribution of the interaction forces between objects mapped in large fields-of-view. We illustrate our proposal with the case-study system of vortex structures nucleated in type-II superconductors with different pinning landscapes. Interaction force distributions are computed from individual vortex positions imaged in thousands-vortices fields-of-view in a two-orders-of-magnitude-wide vortex-density range. Vortex structures nucleated in point-disordered media present Gaussian distributions of the interaction force components. In contrast, if the media have dilute and randomly-distributed correlated disorder, these distributions present non-Gaussian algebraically-decaying tails for large force magnitudes. We propose that detecting this deviation from the Gaussian behavior is a fingerprint of strong disorder, in our case originated from a dilute distribution of correlated pinning centers.

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