The Study of Mathematics Under the Individual System

1922 ◽  
Vol 15 (8) ◽  
pp. 460-466
Author(s):  
Mary M. Reese

About three years ago the system of individual instruction was introduced in the Winnetka schools by our superintendent, Dr. Carleton Washburne. This naturally had to be done gradually for after establishing definite goals for the work which must be accomplished in each grade, the material had to be prepared very carefully so that it would be as nearly self instructive as possible and the children could use it with a minimum amount of help from the teacher. Under this system a child progresses at his own rate of speed, neither being held back by slower pupils nor forced to go forward too rapidly for thorough understanding.

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2300
Author(s):  
Bronisław Andrzej Kolator

In this paper, the energy diagnostic of tractor performance consists in evaluating the energy (fuel consumption per hectare—dm3 ha−1) for a given agricultural operation and in combining it with working capacity, also called productivity (area productivity—ha h−1). One of the methods of solving this problem is the identification of the functioning process of the machine unit. A model of the process of the machine unit performance was developed, considering the operation of the rear linkage system of the implement with the force control adjustment system. In order to analyze the system, a mathematical model of the system function was built: tractor-implement-soil, defining the physical connections and interdependencies between the individual subsystems of the system. Based on this model, a simulation model was developed and implemented in the Matlab/Simulink environment. The Simulink package was used to test the performance of the machine set. The efficiency indicators according to the adopted criteria were calculated in the evaluation block. To evaluate the process, the technical and operational parameters of the tractor, the type and parameters of the tool, and soil properties were taken into account. The results of simulation studies obtained on a validated model are consistent with experimental data from appropriate soil conditions.


2018 ◽  
Vol 35 (10) ◽  
pp. 2061-2078 ◽  
Author(s):  
Sid-Ahmed Boukabara ◽  
Kayo Ide ◽  
Yan Zhou ◽  
Narges Shahroudi ◽  
Ross N. Hoffman ◽  
...  

AbstractObserving system simulation experiments (OSSEs) are used to simulate and assess the impacts of new observing systems planned for the future or the impacts of adopting new techniques for exploiting data or for forecasting. This study focuses on the impacts of satellite data on global numerical weather prediction (NWP) systems. Since OSSEs are based on simulations of nature and observations, reliable results require that the OSSE system be validated. This validation involves cycles of assessment and calibration of the individual system components, as well as the complete system, with the end goal of reproducing the behavior of real-data observing system experiments (OSEs). This study investigates the accuracy of the calibration of an OSSE system—here, the Community Global OSSE Package (CGOP) system—before any explicit tuning has been performed by performing an intercomparison of the OSSE summary assessment metrics (SAMs) with those obtained from parallel real-data OSEs. The main conclusion reached in this study is that, based on the SAMs, the CGOP is able to reproduce aspects of the analysis and forecast performance of parallel OSEs despite the simplifications employed in the OSSEs. This conclusion holds even when the SAMs are stratified by various subsets (the tropics only, temperature only, etc.).


Author(s):  
Ada Scupola

This article investigates the competences deemed necessary both at top managerial and individual levels for the successful adoption and assimilation of business-to-business e-services in small and medium size enterprises. To this end, an in-depth case study of a business-to-business e-service system, a Web-based travel reservation system, was conducted. The results show that three main competences, namely vision, value and control, are important at top management level for the primary adoption of e-services. For secondary adoption and assimilation, three categories of competences were identified as being important either to have or to develop at the individual level, namely technical, interpersonal and conceptual skills.


Author(s):  
Emine Ebru Aksoy

In Turkey, the first step of the individual pension system was based on volunteerism, but the voluntary system resulted in limited participation. Thus, the second step of the system has started to be implemented mandatorily since 2017, and participants were allowed to opt-out the system within two months. More than half of participants in the system preferred to leave the system. Therefore, this study aims to examine individual factors affecting their decision of staying in this system. A survey study was conducted with 374 people selected using the random sampling method. As a result of the study, a positive relationship was found only between the dependent variable and gender, but a significant relationship was determined only between the dependent variable and education level. Based on the results of this study, it is suggested that if the system will need to be improved, the low-performing fund management of the new individual pension system should be re-audited, and the confidence in the system should be increased in this way.


2021 ◽  
pp. 329-350
Author(s):  
Jack Bauer

The field of psychology is under a spell of believing that the person is merely a product of nature and nurture. This belief holds that the individual person plays no causal role in their own development. This belief assumes that epiphenomena (like persons, which originate from nature and nurture) lack real agency and cannot be a cause of themselves at a later time, so personal growth and the transformative self are illusions. This chapter explains the faulty logic in such beliefs and presents the nature, nurture, and ‘ndividuality model of personhood, which holds that the individuality of the whole person influences that person’s own development in ways not explained by nature, nurture, or their interaction. This model relies not on notions of free will or even intentionality but rather on another model of the person as a self-organizing system—a dynamic, organismic system within a pluralistic ecology of systems.


Cells ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 2594
Author(s):  
Yue Ruan ◽  
Tobias Böhmer ◽  
Subao Jiang ◽  
Adrian Gericke

The retina is a part of the central nervous system, a thin multilayer with neuronal lamination, responsible for detecting, preprocessing, and sending visual information to the brain. Many retinal diseases are characterized by hemodynamic perturbations and neurodegeneration leading to vision loss and reduced quality of life. Since catecholamines and respective bindings sites have been characterized in the retina, we systematically reviewed the literature with regard to retinal expression, distribution and function of alpha1 (α1)-, alpha2 (α2)-, and beta (β)-adrenoceptors (ARs). Moreover, we discuss the role of the individual adrenoceptors as targets for the treatment of retinal diseases.


1920 ◽  
Vol 21 (1) ◽  
pp. 52-68 ◽  
Author(s):  
Carleton W. Washburne

Processes ◽  
2019 ◽  
Vol 7 (10) ◽  
pp. 748
Author(s):  
Ana Quintáns-Fondo ◽  
Gustavo Ferreira-Coelho ◽  
Manuel Arias-Estévez ◽  
Juan Carlos Nóvoa-Muñoz ◽  
David Fernández-Calviño ◽  
...  

Chromium (as Cr(VI)) and fluoride (F−) are frequently found in effluents from different industrial activities. In cases where these effluents reach soil, it can play an important role in retaining those pollutants. Similarly, different byproducts could act as bio-adsorbents to directly treat polluted waters or to enhance the purging potential of soil. In this work, we used batch-type experiments to study competitive Cr(VI) and F− adsorption in two different soils and several kinds of byproducts. Both soils, as well as mussel shell, oak ash, and hemp waste showed higher adsorption for F−, while pyritic material, pine bark, and sawdust had a higher affinity for Cr(VI). Considering the binary competitive system, a clear competition between both elements in anionic form is shown, with decreases in adsorption of up to 90% for Cr(VI), and of up to 30% for F−. Adsorption results showed better fitting to Freundlich’s than to Langmuir’s model. None of the individual soils or byproducts were able to adsorbing high percentages of both pollutants simultaneously, but it could be highly improved by adding pine bark to increase Cr(VI) adsorption in soils, thus drastically reducing the risks of pollution and deleterious effects on the environment and on public health.


Author(s):  
Kyle Schroeder ◽  
Aftab A. Khan ◽  
James Moyne ◽  
Dawn Tilbury

Integrating traditionally separate industrial control systems can derive factory-wide benefits by leveraging more information about the ongoing process. This paper shows that connecting a networked safety system and a process control system leads to an extension of the individual benefits provided by each system. A safety system gains the ability to protect not only the machines and workers but also the product that is being built. A diagnostic system can also raise safety alarms when a process variable is outside the expected range of safe operation. This connection is explored to determine the practical impact of different methods of integration on machining and system processes. Three integration methods are possible depending on which portions of the system can be classified as “safe”. A case study integrating a diagnostics system as a non-safe sensor proves that this connection, when it is implemented on an industrial testbed, provides all of the benefits described and does not require significant changes to control software.


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