scholarly journals Comprehensive academic undergraduate advising services: One university's successful model

2016 ◽  
Author(s):  
Heidi B. Samuels
Keyword(s):  
Successful Model ◽  
Undergraduate Advising ◽  
Advising Services

MODEL FOR APPLICATION OF STEM APPROACH IN CONDITIONS OF DISTANCE LEARNING – STEM HOME LABORATORY

2020 ◽  
Vol 11 (1) ◽  
pp. 209-215
Author(s):  
Greta Stoyanova ◽  
Keyword(s):  
Science Education ◽  
Critical Thinking ◽  
Distance Learning ◽  
Primary School ◽  
Soft Skills ◽  
Learning By Doing ◽  
Online Classes ◽  
Successful Model ◽  
Scientific Experiment ◽  
At Home

The sudden shift to distance learning caused by the COVID-19 virus emergency has posed a serious challenge to schools. This article presents a successful model for applying the STEM approach in science education at the Alexander Georgiev-Kodzhakafaliyata Primary School in Burgas. In the conditions of synchronous distance learning in MS Teams environment, students conduct experiments with handy tools and materials at home, during online classes or as homework assignments, then describe the experiments in presentations and share them with their classmates during the project week ( April holidays and at the end of the year). The application of STEM home laboratory combines knowledge from different disciplines, diversifies and facilitates learning, enables learning by doing things, which most stimulates the curiosity of students. Thus, they casually acquire skills for planning and conducting a scientific experiment, generating hypotheses and reasoning, measuring results and formulating conclusions. At the same time, soft skills for teamwork, creative and critical thinking, presentation skills are formed and upgraded.

scholarly journals Identifying Controlling Factors of Bioaccumulation of Selected Metal(loid)s in Various Soil–Cereal Crop Systems within Cultivated Fluvisols

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1180
Author(s):  
Jan Skála ◽  
Radim Vácha ◽  
Jarmila Čechmánková
Keyword(s):  
Plant Uptake ◽  
Ph Value ◽  
Soil Parameters ◽  
Significant Variable ◽  
Cd Uptake ◽  
Crop Models ◽  
Successful Model ◽  
Model Reliability ◽  
Contamination Levels ◽  
Single Extractions

The paired Fluvisol and cereal samples in both the field screening and controlled experiments are reported to elucidate the soil–crop relationship for As, Cd, and Pb in relation to changing contamination levels. Significant varietal differences in plant uptake were observed for crop type (barley, triticale) and the harvested part of the crop (oat shoots and grain). When parametrizing the stepwise regression models, the inclusion of soil properties often improved the performance of soil–crop models but diverse critical soil parameters were retained in the model for individual metal(loid)s. The pH value was often a statistically significant variable for Cd uptake. For As and Pb, the more successful model fit was achieved using the indicators of quantity or quality of soil organic matter, but always with lower inherent model reliability compared to Cd. Further, a single correlation analysis was used to investigate the relationship between extractable metal concentrations in soil solution and their crop accumulation. For Cd, there were strong intercorrelations among single extractions, the NH4NO3 extraction stood out with perfect correlation with plant uptake in both experiments. For As and Pb, the CaCl2 and Na2EDTA solutions outperformed other single extractions and were the better choice for the assessment of depositional fluvial substrates.

scholarly journals Postgraduate Studies on Lean Management—A Review of Initiatives

2020 ◽  
Vol 10 (8) ◽  
pp. 197
Author(s):  
Mariusz Bednarek ◽  
Aleksander Buczacki ◽  
Lukasz Bielakowski ◽  
Bartlomiej Gladysz ◽  
Mariusz Bryke
Keyword(s):  
Lean Manufacturing ◽  
Success Factors ◽  
Postgraduate Education ◽  
General Level ◽  
Success Factor ◽  
Lean Management ◽  
Successful Model ◽  
Critical Success ◽  
Postgraduate Studies ◽  
Long Time

The article elaborates upon a successful model of postgraduate studies on lean manufacturing. The subject of the research was nine editions of the Kaizen Academy postgraduate studies organized by the Warsaw University of Technology and the Kaizen Institute in the years 2009–2018, that still enjoys interest in the market. A detailed qualitative analysis of this case, followed by a comparative analysis with other post-graduate programs of this type on the national, European, and global level should make it possible to find what is necessary to launch and actively operate for a long time in the (considerably competitive) market of qualification raising programs related to Lean Management (critical success factors). The study has also identified the differences between a successful program, analyzed in detail, and other available programs described in the literature and on the Internet. This has been achieved through a structured analysis of thirty-nine postgraduate programs identified by querying scientific databases and the Google Internet search engine. Best practices and models of postgraduate education on Lean Management have been discussed, and the thirty-nine programs comprising the identified sample have been compared. Considering the very general level of the data available in terms of the organization of postgraduate programs, it has also been assessed if they follow constructivism and experiential learning paradigms. This has been achieved by including the industrial days/visit indicator in the comparison. Given its high value, it has been identified as a success factor of the postgraduate curriculum on Lean Management.

An experimental study of the influence of heat storage and transportability of different lubricants on friction under transient elastohydrodynamic conditions

2003 ◽  
Vol 217 (1) ◽  
pp. 27-37 ◽  
Author(s):  
B-O Åhrström ◽  
C Penchinat ◽  
T Norrby
Keyword(s):  
Heat Storage ◽  
Improve Performance ◽  
Dynamic Simulations ◽  
Successful Model ◽  
Frictional Properties ◽  
Fast Fourier Transform Analysis ◽  
Propagating Waves ◽  
Frictional Forces ◽  
Observed Behaviour ◽  
Reduce Emissions

Lubricated transient elastohydrodynamic (EHD) conjunctions are extremely difficult to simulate numerically since lubricant properties such as temperature and viscosity vary significantly during the loading-unloading event. Nevertheless, industry has invested considerable time and effort in trying to create such models in order to improve performance and to reduce emissions and friction. One of the essential requirements for a successful model is accuracy in the implementation of frictional properties. The experimental method presented in this paper used an impact on the end surface of a beam to generate propagating waves that were subjected to fast Fourier transform analysis. The method yielded detailed information about the build-up and decay of normal and frictional forces as a function of time for various lubricants at three different initial temperatures (20, 40 and 80°C) and at relevant EHD pressures. A variety of lubricants were studied to a peak Hertzian pressure of 2.5GPa for loading-unloading times of 200-400 μs (typical for elastohydrodynamically lubricated conjunctions in ball bearings and gears). A qualitative study of the thermal properties of the lubricants and their influence on viscosity and friction coefficient was also undertaken and, finally, a plausible explanation of the observed behaviour is presented and parallels to dynamic simulations of polyatomic gases are drawn.

The Research of the Wheel Loader Working Device

2012 ◽  
Vol 155-156 ◽  
pp. 746-750
Author(s):  
Wei Wei Zhang ◽  
Jun Zhou ◽  
Jian Xin Deng
Keyword(s):  
System Model ◽  
Variable Geometry ◽  
Wheel Loader ◽  
Construction Machinery ◽  
Successful Model ◽  
Safety And Reliability ◽  
Great Pressure ◽  
Working Principle ◽  
Increasing Demand ◽  
Working Device

On the background of increasing demand of construction machinery, the requirement of energy saving without affecting performance, safety and reliability put great pressure on engineering staffs. A comprehensive grasp of the whole system in constitution and working principle exactly helps designers in control and modifications theoretically. Evaluations and discusses in this article are based on a model in Simulation X, and variable geometry parameters in the system model make the matching of desired result easily. A successful model build for working devices of the wheel loader, and all technical result can be acquired easily in the soft ware, the result curves can easily revealed the requirement of optimizing the design of the whole machine.

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