scholarly journals Cutting Tests of the Outer Layer of Material Using Onion as an Example

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2360
Author(s):  
Andrzej Bochat ◽  
Marcin Zastempowski ◽  
Marcin Wachowicz
Keyword(s):  
Experimental Research ◽  
Outer Layer ◽  
Extreme Values ◽  
Regression Function ◽  
Machine Construction ◽  
Modular Construction ◽  
Air Supply ◽  
Research Plan ◽  
High Level ◽  
Build Systems

This paper describes experimental research on cutting the outer layer of onions in the machine peeling process. The authors’ own globally innovative modular machine construction was used for this purpose. The onion peeling machine was constructed on a real scale. The effectiveness of the machine’s functioning Se was defined as the ratio of the mass of material correctly removed by the scale blower mp to the mass of all material leaving the machine on the test bench mc. In order to carry out the experimental research, a test stand was constructed, a research plan and programme were adopted, and the research methodology was developed. The results obtained during the experimental research and the data obtained from the regression function equations for the developed design of the onion peeling machine were used to build systems of independent variables, for which the dependent variable Se reached extreme values. The effectiveness of the machine’s operation Se of modular construction increased with the increase in the depth of the external incisions of the shells dn, the number of scale-blowing nozzles, and the pressure of the air supply to the scale-blowing unit p. Increasing the material feed rate vp and the distance of the air nozzles from the material to be processed hd reduced the machine’s efficiency Se. The tests carried out showed a high level of efficiency on the level of Se=0.645−0.780, which is not found in mass-produced machines.

scholarly journals A Methodology for Generation of Performance Models for the Sizing of Analog High-Level Topologies

VLSI Design ◽  
2011 ◽  
Vol 2011 ◽  
pp. 1-17
Author(s):  
Soumya Pandit ◽  
Chittaranjan Mandal ◽  
Amit Patra
Keyword(s):  
Regression Function ◽  
Support Vector ◽  
Detailed Knowledge ◽  
Performance Models ◽  
Construction Time ◽  
Level Model ◽  
The Individual ◽  
High Level ◽  
Sequence Generator ◽  
Level Performance

This paper presents a systematic methodology for the generation of high-level performance models for analog component blocks. The transistor sizes of the circuit-level implementations of the component blocks along with a set of geometry constraints applied over them define the sample space. A Halton sequence generator is used as a sampling algorithm. Performance data are generated by simulating each sampled circuit configuration through SPICE. Least squares support vector machine (LS-SVM) is used as a regression function. Optimal values of the model hyper parameters are determined through a grid search-based technique and a genetic algorithm- (GA-) based technique. The high-level models of the individual component blocks are combined analytically to construct the high-level model of a complete system. The constructed performance models have been used to implement a GA-based high-level topology sizing process. The advantages of the present methodology are that the constructed models are accurate with respect to real circuit-level simulation results, fast to evaluate, and have a good generalization ability. In addition, the model construction time is low and the construction process does not require any detailed knowledge of circuit design. The entire methodology has been demonstrated with a set of numerical results.

The Development of an Experimental Research Plan Based on Local Strain-Life Method for an Air Handling Unit Subjected to Seismic Loads

2014 ◽  
Vol 224 ◽  
pp. 226-231
Author(s):  
Michał Burak ◽  
Dariusz Skibicki ◽  
Michał Stopel
Keyword(s):  
Experimental Research ◽  
Real Life ◽  
Local Strain ◽  
Operating Conditions ◽  
Seismic Loads ◽  
Random Loading ◽  
Air Handling Unit ◽  
Research Plan

This paper presents procedures to be used for development of an experiment plan which is supposed to provide the tested structure with operating conditions most similar to those in real life. The research object is an air handling unit subjected to random loading such as earthquakes.

Environmental Attributes of EDM Process

2013 ◽  
Vol 371 ◽  
pp. 235-239
Author(s):  
Dumitru Soaita
Keyword(s):  
Environmental Impact ◽  
Experimental Research ◽  
Clean Technology ◽  
Machine Construction ◽  
Environmental Attributes ◽  
Best Available Technology ◽  
Available Technology ◽  
Best Available Technology Bat ◽  
Edm Process

EDM is presently known as the best available technology (BAT) to solve various problems in machine construction. This paper attempts to provide some answers to the question - is EDM a clean technology? Working methodology consisted in processing literature data and data obtained from authors experimental research on the environmental impact of EDM. In conclusion, there are several issues to be solved before EDM can be considered a clean technology. The article also suggests solutions for these problems.

Dispersion of indoor air pollutants emitted at near-floor levels in rooms with floor heating and mixing ventilation

2016 ◽  
Vol 27 (2) ◽  
pp. 205-218 ◽  
Author(s):  
Andrius Jurelionis ◽  
Laura Stasiuliene ◽  
Tadas Prasauskas ◽  
Dainius Martuzevicius
Keyword(s):  
Personal Exposure ◽  
Pollution Source ◽  
Pollutant Removal ◽  
Cold Surface ◽  
Air Supply ◽  
Air Change Rate ◽  
Low Energy Buildings ◽  
High Level ◽  
Indoor Air Pollutants ◽  
Floor Heating

The usage of floor heating is increasing in low-energy buildings as it enables efficient applications of low-exergy level heat sources as well as provides a uniform distribution of air temperature and low air velocities in heated spaces. The aim of this study was to analyse the effects of floor heating on the dispersion of gaseous pollutants emitted at the floor level, considering that carpets and flooring materials can be sources of such pollution. Mixing ventilation with high-level wall grille air supply and in-ceiling four-way air supply was tested numerically and experimentally in the full-scale chamber at the air change rate of 2 h−1. Three positions of a heated dummy in relation to the pollution source, cold surface and air supply diffusers were analysed. Both experiments and CFD predictions revealed the overall positive effect of floor heating on ventilation effectiveness and personal exposure. Floor heating increased pollutant removal effectiveness by 5% and reduced personal exposure by 22% on average.

scholarly journals Numerical Study on Air Egress Velocity of Ancillary Room Pressurization Systems in Apartment Fires

2020 ◽  
Vol 34 (4) ◽  
pp. 78-86
Author(s):  
Byeongjun Kim ◽  
Ying Yan ◽  
Weon Gyu Shin
Keyword(s):  
Flow Rate ◽  
Fire Safety ◽  
Numerical Study ◽  
Soot Concentration ◽  
Apartment House ◽  
Safety Standards ◽  
Air Supply ◽  
High Level ◽  
The Relationship ◽  
Fire Door

In this study, numerical simulations were performed on the air egress velocity of pressurization systems in an ancillary room when a fire occurred in an apartment house. The relationship between the air supply flow rate of a damper and air egress velocity at a fire door is predicted to be linear. Additionally, a minimum flow rate of the damper, which meets national fire safety standards for air egress velocity, i.e., 0.7 m/s can be estimated. Air egress velocity at the fire door is analyzed according to the supply air direction and installation height of the damper. When the damper has an upward supply air direction and is installed at a high level, the egress velocity at the top section of the fire door is larger, whereas the soot concentration at the ancillary room is lower than when the supply direction of the damper is downward. Therefore, it is found that increasing the air egress velocity at the top section of the fire door helps to efficiently prevent the inflow of smoke.

Considerations on Outliers in Medical Sciences and Materials Characterization

2012 ◽  
Vol 188 ◽  
pp. 185-192 ◽  
Author(s):  
Laurentiu Roland Cucuruz ◽  
Mircea Nicoară ◽  
Aurel Răduţă ◽  
Cosmin Locovei ◽  
Maria Cucuruz ◽  
...  
Keyword(s):  
Information Content ◽  
Experimental Research ◽  
Material Science ◽  
Statistical Data ◽  
Extreme Values ◽  
Materials Characterization ◽  
Medical Sciences ◽  
Data Manipulation ◽  
Number Of Patients ◽  
Grubbs Test

Experimental research in both medical sciences and material science rely in many situations on a reduced quantity of available data, due to limited number of patients or high costs of samples. Some statistical data manipulation methods are discussed regarding their applicability, information content, value and limits. A special attention is given to the extreme values eliminated by the GRUBBS test. The necessity of the elimination of the extreme values is demonstrated.

scholarly journals FAMILY CENTERED EMPOWERMENT MODEL TERHADAP PERUBAHAN PERILAKU KELUARGA MISKIN MENCEGAH HIPERTENSI DI KECAMATAN BANTUR

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Kurniawan Erman Wicaksono ◽  
Ahmad Guntur Alfianto
Keyword(s):  
Experimental Research ◽  
Control Group ◽  
P Value ◽  
Capita Expenditure ◽  
Family Behavior ◽  
Randomized Design ◽  
Quasi Experimental ◽  
Empowerment Model ◽  
High Level ◽  
Family Centered

AbstrakHipertensi merupakan salah satu penyebab kematian nomor satu di dunia. Prevalensi hipertensi mengalami peningkatan setiap tahun seiring dengan bertambahnya umur, tingkat pendidikan, status tidak bekerja dan tingkat pengeluaran per kapita yang tinggi. Kabupaten Malang merupakan salah satu daerah di Indonesia dengan jumlah penderita hipertensi yang menduduki peringkat pertama. Penyelesaian masalah hipertensi di Kabupaten Malang sampai saat ini belum memenuhi target 100%. Capaian cakupan terendah di Kecamatan Bantur berada di Desa Bantur. Penelitian ini bertujuan untuk menganalisis pengaruh family centered empowerment model terhadap perubahan perilaku keluarga miskin dalam mencegah hipertensi pada keluarga. Penelitian ini merupakan penelitian eksperimen semu (quasi experimental research) dengan menggunakan rancangan non randomize control group pretest posttest. Hasil penelitian menunjukkan bahwa p value pengetahuan 0,005, p value sikap sebesar 0,000, dan p value tindakan sebesar 0,001 (p value < 0,05). Intervensi family centered empowerment model dapat mempengaruhi perubahan perilaku keluarga sebagai bentuk modifikasi pendidikan kesehatan pada keluarga.  Kata kunci  : empowerment, keluarga, hipertensi  AbstractHypertension is one causes of death in the world. The prevalence of hypertension has increased every year along with increasing age, level of education, non-working status and high level of per capita expenditure. Malang District is one of the regions in Indonesia with the first number of hypertensive patients. Completion of hypertension problems in Malang District until now has not met the 100% target. The lowest coverage achievement in Bantur is in Bantur Village. This study aims to analyze the effect of a family centered empowerment model on changes in poor family behavior in preventing hypertension in families. This research is a quasi-experimental research (quasi experimental research) using non randomized design control group pretest posttest. The results showed that p value knowledge was 0.005, p value attitude was 0.000, and p value of action was 0.001 (p value <0.05). The intervention of family centered empowerment models can influence changes in family behavior as a form of modification of health education in families Keywords:           empowerment, family, hypertension

scholarly journals An Experimental Research on Microseismic Monitoring Technology in Detecting the Contact Time of Badminton Amateurs’ Lunge

2021 ◽  
Author(s):  
Yang Yang ◽  
Yingchun Cui ◽  
Wenfa Yan
Keyword(s):  
Experimental Research ◽  
Contact Time ◽  
Body Shape ◽  
Microseismic Monitoring ◽  
Skill Levels ◽  
Key Indicator ◽  
Floor Vibration ◽  
Research Objects ◽  
Similar Body ◽  
High Level

The fast and flexible characteristics of badminton determine the necessity of its lunge, and fast lunge will have an important impact on the results of the game in actual combat. In lunge evaluation, the contact time to the ground is a key indicator. This article selects two middle-aged male badminton amateurs with similar body shape and age， but different skill levels as the research objects to carry out comparative experiments. The microseismic equipment is used to record the floor vibration which is caused by the running of badminton amateurs in sports. The microseismic signals of lunge are processed and analyzed by MATLAB software. And we evaluate the pro and cons of various time to touch the ground from amateurs with different skill levels. The research found that 1. Microseismic technology can detect the contact time to the ground. 2. High-level badminton amateurs have obvious advantages in the footwork contact time. Microseismic technology has a certain feasibility as a tool for evaluating the footwork contact time of badminton.

Extreme values of non-stationary random sequences

1986 ◽  
Vol 23 (04) ◽  
pp. 937-950 ◽  
Author(s):  
Jürg Hüsler
Keyword(s):  
Extreme Value Theory ◽  
Extreme Values ◽  
Value Theory ◽  
Extreme Value ◽  
Extremal Index ◽  
Stationary Case ◽  
Random Sequences ◽  
Similar Role ◽  
High Level

We extend some results of the extreme-value theory of stationary random sequences to non-stationary random sequences. The extremal index, defined in the stationary case, plays a similar role in the extended case. The details show that this index describes not only the behaviour of exceedances above a high level but also above a non-constant high boundary.

scholarly journals An Experimental Research on Microseismic Monitoring Technology in Detecting the Contact Time of Badminton Amateurs’ Lunge

2020 ◽  
Author(s):  
Yang Yang ◽  
Yingchun Cui ◽  
Wenfa Yan
Keyword(s):  
Experimental Research ◽  
Contact Time ◽  
Body Shape ◽  
Microseismic Monitoring ◽  
Skill Levels ◽  
Key Indicator ◽  
Floor Vibration ◽  
Research Objects ◽  
Similar Body ◽  
High Level

The fast and flexible characteristics of badminton determine the necessity of its lunge, and fast lunge will have an important impact on the results of the game in actual combat. In lunge evaluation, the contact time to the ground is a key indicator. This article selects two middle-aged male badminton amateurs with similar body shape and age， but different skill levels as the research objects to carry out comparative experiments. The microseismic equipment is used to record the floor vibration which is caused by the running of badminton amateurs in sports. The microseismic signals of lunge are processed and analyzed by MATLAB software. And we evaluate the pro and cons of various time to touch the ground from amateurs with different skill levels. The research found that 1. Microseismic technology can detect the contact time to the ground. 2. High-level badminton amateurs have obvious advantages in the footwork contact time. Microseismic technology has a certain feasibility as a tool for evaluating the footwork contact time of badminton.

Sign in / Sign up

Export Citation Format

Share Document