Straightening Technology Research of Aluminum Profile for Vehicle

2010 ◽  
Vol 145 ◽  
pp. 449-452
Author(s):  
Jian Jun Hao ◽  
Qing Xue Huang ◽  
Xue Liang Zhang
Keyword(s):  
Process Parameters ◽  
Technology Research ◽  
Aluminum Profile ◽  
The Relationship ◽  
Selection Of

Based on straightening principle of profile straightening equipment, the relationship between process parameters and quality of profile straightening is studied, which can provide basis for optimization and selection of process parameters.

scholarly journals Systematic selection of competing metabolomics methods in a metabolite-sensory relationship study

Metabolomics ◽  
2021 ◽  
Vol 17 (9) ◽  
Author(s):  
Naser Davarzani ◽  
Carmen Diez-Simon ◽  
Justus L. Großmann ◽  
Doris M. Jacobs ◽  
Rudi van Doorn ◽  
...  
Keyword(s):  
Sensory Profile ◽  
Small Set ◽  
Selection For ◽  
Systematic Selection ◽  
The Relationship ◽  
Tomato Soup ◽  
Final Selection ◽  
Selection Of

Abstract Introduction The relationship between the chemical composition of food products and their sensory profile is a complex association confronting many challenges. However, new untargeted methodologies are helping correlate metabolites with sensory characteristics in a simpler manner. Nevertheless, in the pilot phase of a project, where only a small set of products are used to explore the relationships, choices have to be made about the most appropriate untargeted metabolomics methodology. Objective To provide a framework for selecting a metabolite-sensory methodology based on: the quality of measurements, the relevance of the detected metabolites in terms of distinguishing between products or in terms of whether they can be related to the sensory attributes of the products. Methods In this paper we introduce a systematic approach to explore all these different aspects driving the choice for the most appropriate metabolomics method. Results As an example we have used a tomato soup project where the choice between two sampling methods (SPME and SBSE) had to be made. The results are not always consistently pointing to the same method as being the best. SPME was able to detect metabolites with a better precision, SBSE seemed to be able to provide a better distinction between the soups. Conclusion The three levels of comparison provide information on how the methods could perform in a follow up study and will help the researcher to make a final selection for the most appropriate method based on their strengths and weaknesses.

scholarly journals Research on the Fairness of MPACC Selection Based on Examiner Heterogeneity

2021 ◽  
Vol 235 ◽  
pp. 03010
Author(s):  
Yan Wang ◽  
Zhuqian He ◽  
Jingjie Zheng
Keyword(s):  
Regression Model ◽  
Test Scores ◽  
Test Results ◽  
Before And After ◽  
The Relationship ◽  
Selection Of

The selection of MPACC (Master of Professional Accountant) is a key step in the training of senior accounting personnel. This paper examines the relationship between examiner heterogeneity and MPACC second test scores. We try to clarify the reason for the unfair phenomenon because of the heterogeneity of examiners in MPACC second test results and seek ways to solve this problem. The study found that the MPACC second test results are unfair. This unfairness is caused by the heterogeneity of the examiner. However, standardized algorithms balance the differences in MPACC examiner heterogeneity. The regression model was constructed by using the MPACC second test scores before and after standardization, which verified the existence of examiner heterogeneity and the effect of the standardized algorithm on the examiner heterogeneity. This article is based on the differences of MPACC second test scores due to examiner’s heterogeneity. We propose the application of standardized algorithm, which will play an important role in improving the quality of MPACC enrollment and promoting the training of senior accounting personnel.

scholarly journals Теоретическое обоснование конструктивных параметров делителя с горизонтальным размещением щелевых отверстий

2019 ◽  
pp. 62-65
Author(s):  
K.N. Tishaninov ◽  
A.V. Anashkin
Keyword(s):  
Distribution Curve ◽  
Grain Production ◽  
Production Lines ◽  
Quality Of Work ◽  
Flow Divider ◽  
Grain Flow ◽  
The Cost ◽  
The Relationship ◽  
Selection Of

Зерноочистительные агрегаты зачастую используют поточные технологические линии для послеуборочной очистки зерна, от качества работы которых зависит стоимость конечного продукта и рентабельность всего цикла производства зерна. Разделение потока зерна на две технологические линии происходит с использованием тройника зернопровода, что приводит к перегруженности одной линии и недогруженности другой. Зерноочистительные машины работают за рамками рекомендуемых нагрузок, что приводит к низкому качеству очистки и высокому уровню потерь зерна. Для качественной настройки зерноочистительных машин в составе технологии послеуборочной очистки зерна необходимы устройства для разделения потоков зерна. В ФГБНУ ВНИИТиН разработаны несколько классов авторегулируемых устройств (делителей): с грузовоспринимающей системой, с щелевыми отверстиями и т.д. Нами рассматривается одно из таких устройств делитель потока зерна с горизонтальным размещением щелевых отверстий. Теоретически обоснована взаимосвязь погрешности деления в зависимости от асимметричности подачи зерна в стабилизирующей ёмкости, высоты насыпи, ширины отводящих каналов. Показана кривая распределения погрешности разделения в зависимости от отклонений подачи зерна по ширине и длине ёмкости. На основе теоретического анализа сформулированы рекомендации по технологической настройке и выбору оптимальных конструктивных параметров каскадного делителя.Grain cleaning units often use flow lines for postharvesting cleaning of grain, the quality of work which depends on the cost of the final product and the profitability of the entire cycle of grain production. The separation of the grain flow into two production lines occurs using the tee of the grain pipe which leads to congestion of one line and underloading of the other. Grain cleaning machines operate beyond the recommended loads which lead to poor cleaning quality and high levels of grain loss. For highquality setting of grain cleaning machines as part of the technology of postharvesting cleaning of grain, devices for the separation of grain flows are needed. Several classes of automaticallycontrolled devices (dividers): with a loadperceived system, with slotted openings, etc. are developed in FSBSI AllRussian Scientific Research Institute for the Use of Machinery and Oil Products in Agriculture. One of these devices a grain flow divider with horizontal placement of slotted openings is considered by us. Theoretically, the relationship between the error of division depending on the asymmetry of the grain supply in a stabilizing tank, the height of the embankment, the width of the discharge channels. The distribution curve of separation error is shown depending on the deviations of the grain feed across the width and length of the tank. Based on the theoretical analysis recommendations for technological adjustment and selection of optimal part specifications of a cascade divider are formulated.

scholarly journals Memahami dan Mengukur Kecerdasan Logis Matematis: Sebuah Telaah Pustaka

2020 ◽  
Vol 3 (2) ◽  
pp. 197
Author(s):  
Zakiatun Hana ◽  
Nujumuddin Nujumuddin ◽  
Ramdhani Sucilestari
Keyword(s):  
Student Learning ◽  
Student Learning Outcomes ◽  
Measurement Instruments ◽  
Internal Factors ◽  
Strong Indicator ◽  
Intelligence Development ◽  
The Relationship ◽  
Affective Domains ◽  
Selection Of

One of the internal factors that can affect student learning outcomes is intelligence. Intelligence is the most important psychological factor in the learning process and determines the quality of student learning. So far mathematical logical intelligence is still the main benchmark for the level of intelligence of each individual and is a strong indicator in the learning achievement of students. Therefore, the profile, relationships and effects of mathematical logical intelligence need to be revealed. There have been many studies related to the relationship and influence of mathematical logical intelligence that have been carried out and published in journals and proceedings. A literature review of the results of these studies has been carried out. The conclusion that can be drawn from this literature is that the mathematical logical intelligence profile of students in Indonesia is at a moderate to good level. The relationship and influence of logical-mathematical intelligence that has been revealed is more on variables related to cognitive and affective domains, so it needs to be disclosed for variables in the psychomotor domain. Finally, the selection of intelligence measurement instruments must pay attention to the type of intelligence to be measured and the criteria for intelligence development based on age.

scholarly journals Alternative Exhibition Spaces. Multi-criteria Method of Comparative Analysis

2021 ◽  
Author(s):  
Joanna Stefańska ◽  
Paulina Kowalczyk ◽  
Agata Gawlak
Keyword(s):  
Comparative Analysis ◽  
Cultural Integration ◽  
Architectural Space ◽  
Exhibition Space ◽  
Works Of Art ◽  
Art Objects ◽  
Artistic Vision ◽  
The Relationship ◽  
Selection Of

The aim of this article is to make a multi-criteria analysis of various exhibition spaces of an originally non-exhibition character and to determine how these spaces affect the selection of works and the exhibition concept. The analysis is based on the exhibitions of art objects at collective exhibitions in unconventional architectural spaces: commercial, i.e. the modern office building of PBG Gallery Skalar Office Centre in Poznań, post-industrial i.e. in the former Zakłady Przemysłu Ziemniaczanego Lubanta S.A. and in the historic interior of the "U Jezuitów" Gallery of the Cultural Integration Centre in Poznań. The multi-criteria comparative analysis shows a variety of features of the studied spaces as well as the relationship between architecture and art and their mutual interaction. The participatory role of the non-exhibition space in the process of creating an exhibition and selecting works has been proven. It has also been confirmed that the presentation of works of art in originally non-exhibition spaces creates a new quality of the artwork. Unconventional architectural space, when used for the exhibition of works of art, expands and strengthens the area of ​​their influence through the interaction between the work and the architectural space. The specificity of the space adapted for exhibition needs, the presence and type of architectural details in the interior, the quantity and quality of light and its distribution in space, the volume and colour of the interior determine the exhibition space and influence the shape of the exhibitions organised and the reception of the artworks. The only condition for the change of the original function of an architectural space into that of an exhibition space is a coherent artistic vision of the creator. This should take into account the appropriate selection of the exhibited objects, where the process of searching for the relationship between architecture and art determines the features of the architectural space as integral components influencing the realisation of the exhibition .

scholarly journals Governing Territories in Turbulence with Advanced Marketing Frameworks

2020 ◽  
Vol 16 (1) ◽  
pp. 79
Author(s):  
Roberto Bruni ◽  
Annarita Colamatteo ◽  
Evgenia Nekhoda
Keyword(s):  
Technology Use ◽  
Policy Makers ◽  
Use Of Data ◽  
Production And Consumption ◽  
External Stakeholders ◽  
Design Production ◽  
The Relationship ◽  
Selection Of

The world is living in a period of turbulence in terms of health and environmental emergencies, markets and societies complexity. Providing sustainable wellbeing and quality of life to population is a challenge for governments. Policy makers are searching for useful strategies to satisfying the needs of population, and forecasting problems for the future. Technology, use of data, international cooperation and networks are change-generating forces that cause effects on markets and societies and modify the design, production, and consumption of products and services. Companies manage the factors that stimulate the change, modifying or adapting their management and marketing approaches. The challenge of managing turbulence of societies and the relationship with internal and external stakeholders appears to be more difficult for governments. Including literature from sociology, geography, and business and management, a selection of multidisciplinary contributions is presented to explain the role of advanced marketing frameworks appliable by governments to overcome the complexity within territories caused by the change-generating forces. The paper presents the place marketing ‘value co-creation driven’ as a useful framework to manage the place value proposition by governments, using specific capabilities and a systemic approach.

The Influence of Electric Parameters on the Surface Quality of Ceramic in Internal Grinding Using the Ultrasonic and ELID Composite Grinding

2014 ◽  
Vol 596 ◽  
pp. 47-51 ◽  
Author(s):  
You Yi Zheng ◽  
Hao Pang ◽  
Qi You ◽  
Xiao Feng Jia
Keyword(s):  
Oxide Film ◽  
Surface Quality ◽  
Grinding Wheel ◽  
Electrical Parameters ◽  
Diamond Grinding Wheel ◽  
Internal Grinding ◽  
Electric Parameters ◽  
The Relationship ◽  
Selection Of

Analyzed the relationship between electrical parameters of the ultrasonic and electrolytic in-process dressing (ELID) composite grinding and the surface quality of the ceramic through the experiment. The value of the voltage and the current were recored by labview and the surface quality of the ceramic was tested using Talysurf CCI 6000 In the experiment. The results show that the selection of electrical parameters affects the electrolysis speed of diamond grinding wheel and the speed of the oxide film formed and the quality of the oxide film, and then affects the grinding performance of the grinding wheel and the grinding quality of workpiece.

Use of a Quality Loss Function to Select Statistical Tolerances

1997 ◽  
Vol 119 (3) ◽  
pp. 410-416 ◽  
Author(s):  
H. Vasseur ◽  
T. R. Kurfess ◽  
J. Cagan
Keyword(s):  
Loss Function ◽  
A Priori ◽  
Manufacturing Cost ◽  
Quality Loss ◽  
Quality Loss Function ◽  
Component Assembly ◽  
The Impact ◽  
The Relationship ◽  
Selection Of

In this paper, we present a method for the selection of processes to manufacture various parts of an assembly by establishing a compromise between product quality and part manufacturing cost. We quantify the impact the precision of a part characteristic has on the overall quality of a product by using a standard Taguchi loss function. Part manufacturing cost is modeled as a function of process precision (i.e., standard deviation of the output characteristic) as opposed to previous models where manufacturing cost is a function of part tolerance. This approach is more realistic and does not assume, a priori, a relationship between conventional tolerance and process spread. Rather than allocating conventional tolerances on the assembly parts, we use statistical tolerances that are more pertinent when using a quality loss function. The model adopted makes it possible to investigate the relationship between optimum quality loss and tolerance variations. As expected, the optimum quality loss generally decreases when the tolerance increases. Exceptions may be encountered when changes of process occur. The manufacture of a simple three component assembly is studied to illustrate the findings.

A Predictive Model Construction for the Sheared Planes in Sheet Metal Shearing Process

2007 ◽  
Vol 364-366 ◽  
pp. 590-594
Author(s):  
Yuan Chuan Hsu ◽  
Tung Sheng Yang
Keyword(s):  
Neural Network ◽  
Process Parameters ◽  
Sheet Metals ◽  
The Finite Element Method ◽  
The Neural Network ◽  
Dimension Precision ◽  
Relationship Model ◽  
Blank Holding Force ◽  
The Relationship

The shearing processes such as the blanking and piercing of sheet metals have been often used to prepare workpiece for subsequent forming operation. The sheared plane plays an important role in the shearing products’ dimension precision and their functions. The quality of sheared plane is affected not only by the material characteristics but also by the process parameters. In the current study, the finite element method is used to investigate the shearing process of sheet metals. Then, the neural network was employed to construct the relationship model of shearing process parameters related to the fracture depth of sheared plane, such as blank holding force, die corner radius, punch-die clearance, friction factor and punch speed,. The result and approach obtained from this study would be beneficial to stamping industries because they provide the reference for the prediction of shearing process.

A Comparative Study on Wood Properties of Teaks from Different Geographical Provenances

2012 ◽  
Vol 430-432 ◽  
pp. 508-511
Author(s):  
Peng Xiang Peng ◽  
Kai Fu Li ◽  
Kun Nan Liang ◽  
Kai Meng Xu
Keyword(s):  
Comparative Study ◽  
Wood Species ◽  
Basic Density ◽  
Hainan Island ◽  
Wood Properties ◽  
Teak Wood ◽  
The Relationship ◽  
Obvious Relation ◽  
Selection Of

In order to understand the effects of geographical provenances of teak on wood properties and improve the quality of afforestation in china, research was carried on wood properties of eight provenances of teak at age 27 in Ledong Country, Hainan Island. The slices revealed that the constructional characteristics from different geographical provenances of teak were very similar. But the effect of geographical provenance on teak wood properties was highly significant. The relationship results for properties of teak showed that properties of most wood species had the obvious relation with basic density, which can be used to guide the selection of the teak provenance in the early planting to improve the quality of teak.

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