scholarly journals Development of an Empirical Model to Assess Attention Level and Control Driver's Attention

2018 ◽  
Vol 8 (1) ◽  
pp. 13-26
Author(s):  
Munira AkterLata ◽  
MdMahmudur Rahman ◽  
Mohammad Abu Yousuf ◽  
Md. Ibrahim Al Ananya ◽  
Devzani Roy ◽  
...  
Keyword(s):  
Empirical Model ◽  
And Control ◽  
Attention Level

scholarly journals Técnicas de enseñanza para un desempeño eficaz del estudiante

2021 ◽  
Vol 2 (2) ◽  
pp. 112-130
Author(s):  
María Teresa Rivera Morales ◽  
José María Guajardo Espinoza ◽  
Edgar Humberto Macias Escobedo ◽  
Angela Gabriela Molina Arriaga
Keyword(s):  
High School ◽  
Academic Achievement ◽  
High School Students ◽  
Empirical Model ◽  
School Students ◽  
Instructional Techniques ◽  
Effective Performance ◽  
Prediction And Control ◽  
Lineal Regression ◽  
And Control

El objetivo de esta investigación es conocer y describir un modelo empírico para un desempeño eficaz a partir de las técnicas en estudiantes de bachillerato. El diseño de investigación es cuantitativo, de tipo transversal y de predicción y control. La recolección de datos fue por medio de una encuesta. La muestra fue estratificada por semestre y sección de un bachillerato de la ciudad de Saltillo, Coahuila, seleccionando a un total de 263 estudiantes, de los cuales, 65% fueron mujeres y 35% hombres. Para la obtención de resultados, se realizó un análisis de regresión lineal, obteniendo un modelo a partir del lugar donde se desarrolla el aprendizaje y otro en relación con las técnicas empleadas por el docente. Concluyendo que las técnicas de instrucción que manejen aprendizajes elaboracionales deductivos y las representaciones de éstos en formatos visuales son fuente de un mejor aprovechamiento académico de los alumnos. AbstractThe objective of this investigation is to understand and outline an empirical model for effective performance drawn from techniques in high school students. The investigative design is quantitative under a transversal type and of prediction and control. The recollection of data was performed with the use of a questionnaire. The sample was stratified per semester and section in a high school in Saltillo Coahuila where a total of 263 students were selected, those of which 65% were female and 35% were male. To obtain the findings, an analysis of a lineal regression was used, obtaining a model from where learning takes place and another in relation to techniques applied by the teacher. Concluding that instructional techniques which manage deductive elaborational learning and the representation of these through visual formats are a source of greater academic achievement of students. 

EMPIRICAL MODEL DEVELOPED FOR DUYVIS COCOA LIQUOR PRESS PERFORMANCE EFFECTIVENESS DETERMINATION AND CONTROL

2017 ◽  
Vol 8 (6) ◽  
pp. 725-746
Author(s):  
Felicia O. Akerele ◽  
Leo. A. S. Agbetoyeand Basil O. Akinnuli ◽  
Federal Polytechnic ◽  
Ado Ekiti
Keyword(s):  
Empirical Model ◽  
Performance Effectiveness ◽  
Press Performance ◽  
And Control

scholarly journals An Empirical Model to Estimate the Effect of Social Distance Levels on COVID-19 Outbreak

2020 ◽  
Author(s):  
Hamed Tabesh ◽  
Azadeh Saki ◽  
Rozita Saki
Keyword(s):  
Empirical Model ◽  
Social Distance ◽  
Disease Transmission ◽  
Current Level ◽  
Minimum Level ◽  
Growth Ratio ◽  
Social Distancing ◽  
Rule Model ◽  
And Control

Abstract The implementation of social distancing measures for controlling the outbreak of coronavirus disease 2019 (COVID‑19) in different countries has not been at the same level due to differences in policies, economies, and cultures. Hence, the effect of this pandemic on different aspects of societies varies depending on several factors.In this study, we found that the speed of disease transmission is directly related to the odds of being exposed to the disease in the society, that is directly related to the level of practicing social distancing measures. We introduced the weekly growth ratio (WGR) index and proposed an experimental rule model to monitor the current level of social distancing and predict the levels of intervention so as to reduce the WGR and control the sequential peaks. Our model showed that the minimum level of practicing social distancing in the community should be 80% to control the first peak of the disease; but after controlling the first peak, maintaining 50% of social distancing policies continuously keeps the number of cases/deaths constant and prevents the occurrence of a new peak.

scholarly journals An Empirical Model to Estimate the Effect of Social Distance Levels on COVID-19 Outbreak

2020 ◽  
Author(s):  
Hamed Tabesh ◽  
Azadeh Saki ◽  
Rozita Saki
Keyword(s):  
Empirical Model ◽  
Social Distance ◽  
Disease Transmission ◽  
Current Level ◽  
Minimum Level ◽  
Growth Ratio ◽  
Social Distancing ◽  
Rule Model ◽  
And Control

Abstract The implementation of social distancing measures for controlling the outbreak of coronavirus disease 2019 (COVID‑19) in different countries has not been at the same level due to differences in policies, economies, and cultures. Hence, the effect of this pandemic on different aspects of societies varies depending on several factors.In this study, we found that the speed of disease transmission is directly related to the odds of being exposed to the disease in the society, that is directly related to the level of practicing social distancing measures. We introduced the weekly growth ratio (WGR) index and proposed an experimental rule model to monitor the current level of social distancing and predict the levels of intervention so as to reduce the WGR and control the sequential peaks. Our model showed that the minimum level of practicing social distancing in the community should be 80% to control the first peak of the disease; but after controlling the first peak, maintaining 50% of social distancing policies continuously keeps the number of cases/deaths constant and prevents the occurrence of a new peak.

Modeling, monitoring and control strategies for high temperature short time pasteurization systems — 1. Empirical model development

Food Control ◽  
1998 ◽  
Vol 9 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Antoine Negiz ◽  
Peter Ramanauskas ◽  
Ali Çinar ◽  
Joseph E. Schlesser ◽  
David J. Armstrong
Keyword(s):  
High Temperature ◽  
Empirical Model ◽  
Control Strategies ◽  
Model Development ◽  
Monitoring And Control ◽  
High Temperature Short Time ◽  
Short Time ◽  
And Control

Experimental Study on Material Removal Rate for Engineering Ceramics Machining with Micro-Detonation of Striking Arc

2011 ◽  
Vol 314-316 ◽  
pp. 581-584
Author(s):  
Bao Guo Zhang ◽  
Xin Li Tian ◽  
Ke Ling Lin ◽  
Xiu Jian Tang ◽  
Ya Tao Mao
Keyword(s):  
Material Removal Rate ◽  
Empirical Model ◽  
Material Removal ◽  
Impact Force ◽  
Removal Rate ◽  
Processing Parameters ◽  
Orthogonal Experimental Design ◽  
Analysis Method ◽  
Working Distance ◽  
And Control

The material removal rate (MRR) of micro-detonation of striking arc machining (MDSAM) is studied. The orthogonal experimental design and regression analysis method are employed to build the empirical model and the influencing laws of processing parameters on impact force are educed. Experimental results show that the material removal rate decreases with the increment of working distance and increases with the growth of working current, working gas pressure and pulse width. The exponential type empirical model with feature of simple and reliable consists with experiment results well. The research can offer an important reference for the predication and control of material removal rate in the process of micro-detonation machining of striking arc.

Control of Metal Alloy Oxidation with Electric Fields

1973 ◽  
Vol 31 ◽  
pp. 164-165
Author(s):  
R. R. Dils ◽  
P. S. Follansbee
Keyword(s):  
Electric Fields ◽  
Oxidation Process ◽  
Base Alloy ◽  
Oxide Surface ◽  
Platinum Electrodes ◽  
Insulating Layer ◽  
Iron Base Alloy ◽  
Alloy Oxidation ◽  
Aluminum Oxide Layer ◽  
And Control

Electric fields have been applied across oxides growing on a high temperature alloy and control of the oxidation of the material has been demonstrated. At present, three-fold increases in the oxidation rate have been measured in accelerating fields and the oxidation process has been completely stopped in a retarding field.The experiments have been conducted with an iron-base alloy, Pe 25Cr 5A1 0.1Y, although, in principle, any alloy capable of forming an adherent aluminum oxide layer during oxidation can be used. A specimen is polished and oxidized to produce a thin, uniform insulating layer on one surface. Three platinum electrodes are sputtered on the oxide surface and the specimen is reoxidized.

Evidence for a Blood Ganglion Barrier in the Superior Cervical Ganglion of the Rat

1982 ◽  
Vol 40 ◽  
pp. 204-204
Author(s):  
D. M. DePace
Keyword(s):  
Blood Vessels ◽  
Superior Cervical Ganglion ◽  
Peripheral Nerves ◽  
Time Schedule ◽  
Transmission Electron ◽  
Cervical Ganglion ◽  
The Central Nervous System ◽  
Cervical Ganglia ◽  
Capillary Circulation ◽  
And Control

The majority of blood vessels in the superior cervical ganglion possess a continuous endothelium with tight junctions. These same features have been associated with the blood brain barrier of the central nervous system and peripheral nerves. These vessels may perform a barrier function between the capillary circulation and the superior cervical ganglion. The permeability of the blood vessels in the superior cervical ganglion of the rat was tested by intravenous injection of horseradish peroxidase (HRP). Three experimental groups of four animals each were given intravenous HRP (Sigma Type II) in a dosage of.08 to.15 mg/gm body weight in.5 ml of.85% saline. The animals were sacrificed at five, ten or 15 minutes following administration of the tracer. Superior cervical ganglia were quickly removed and fixed by immersion in 2.5% glutaraldehyde in Sorenson's.1M phosphate buffer, pH 7.4. Three control animals received,5ml of saline without HRP. These were sacrificed on the same time schedule. Tissues from experimental and control animals were reacted for peroxidase activity and then processed for routine transmission electron microscopy.

Effects of renovascular hypertension on rat adrenal zona glomerulosa

1978 ◽  
Vol 36 (2) ◽  
pp. 582-583
Author(s):  
G. Mazzocchi ◽  
P. Rebuffat ◽  
C. Robba ◽  
P. Vassanelli ◽  
G. G. Nussdorfer
Keyword(s):  
Renovascular Hypertension ◽  
Left Kidney ◽  
Renin Angiotensin System ◽  
Plasma Renin ◽  
Zona Glomerulosa ◽  
Ultrastructural Changes ◽  
Albino Rats ◽  
Left Renal Artery ◽  
Angiotensin System ◽  
And Control

It is well known that the rat adrenal zona glomerulosa steroidogenic activity is controlled by the renin-angiotensin system. The ultrastructural changes in the rat zona glomerulosa cells induced by renovascular hypertension were described previously, but as far as we are aware no correlated biochemical and morphometric investigations were performed.Twenty adult male albino rats were divided into 2 experimental groups. One group was subjected to restriction of blood flow to the left kidney by the application of a silver clip about the left renal artery. The other group was sham-operated and served as a control. Renovascular hypertension developed in about 10 days: sistolic blood pressure averaged 165 ± 6. 4 mmHg, whereas it was about 110 ± 3. 8 mmHg in the control animals. The hypertensive and control rats were sacrificed 20 days after the operation. The blood was collected and plasma renin activity was determined by radioimmunological methods. The aldosterone concentration was radioimmunologically assayed both in the plasma and in the homogenate of the left capsular adrenal gland.

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