First engineering and science formation units (blocks) of Tec21 competences-based model [1], defined by Tecnologico de Monterrey, include students solving a real challenge supported by knowledge obtained in modules on...
First engineering and science formation units (blocks) of Tec21 competences-based model [1], defined by Tecnologico de Monterrey, include students solving a real challenge supported by knowledge obtained in modules on mathematics, physics, and computing. A new challenge "Design, construction and modeling of a water-powered rocket" was proposed for the F1007B "Modeling in Engineering with Conservation Laws" block. This challenge involves designing, modeling and construction of a rocket, powered by a jet of water due to the pressure of a hand pump. Students compete in teams to achieve the greatest distance with their rockets. The educational intention of this challenge is to enhance student learning experience by (1) Covering many more topics of Physics that can been applied by students (2) Improve students grades and professor evaluation, (3) Increasing the use of technology by incorporating the Tracker program for video analysis, (4) Enabling comparison of real results with those obtained through MATLAB modeling, and (5) Fostering enthusiasm among students by facilitating teams’ competition within the same class and even among different campuses. Considering the analysis made, it was observed that the water rocket contest helped most of the students to better understand the concepts of Physics included in this block and in the previous block, F1006B "Modeling the Movement in Engineering". The topics in this unit include the Principle of conservation of energy, the Principle of conservation of lineal momentum, Bernoulli’s Principle, Projectile motion and Air friction. A large percentage of students consider that this activity was good for using technological tools such as Matlab (72%) or Tracker (84%) and to compare theory with reality. A good number of students believe that this challenge helped them develop and implement solutions, demonstration of operation of engineering systems and devices, written language, and scientific thinking competences. It can be conclud
The low dimensional structures containing III-V ferromagnetic semiconductors were intensively investigated in the last few years because of the variety of their potential applications. The aim of the present work was ...
The low dimensional structures containing III-V ferromagnetic semiconductors were intensively investigated in the last few years because of the variety of their potential applications. The aim of the present work was to study the interlayer exchange coupling in the short period GaMnAs/GaAs superlattices containing 16 or 8 GaMnAs monolayers. Samples with the magnetic layers corresponding to the mixed crystal composition with 5% or 6% of Mn were grown by MBE technique and characterized by both high-resolution X-ray diffraction and Raman scattering methods. Folded acoustic phonons were observed for the first time for this particular quantum system in the Raman scattering spectra. The interlayer exchange coupling in selected superlattices. was investigated by both elastic neutron scattering (diffraction) and polarized neutron reflectivity measurements. Presence of the smooth interfaces and the stability of the superlattice period were confirmed by neutron reflectometry data. Ferromagnetic correlation of the magnetization vector in subsequent GaMnAs magnetic layers was demonstrated by both experimental methods.
The American Society of Training and Development has recently launched their 'Train America's Workforce'2 program that raises the awareness of training and its importance in corporate America. The purpose ...
详细信息
The American Society of Training and Development has recently launched their 'Train America's Workforce'2 program that raises the awareness of training and its importance in corporate America. The purpose of this presentation is to discuss the opportunities for generating savings in an injection molding plant by improving the skills of the employees through a formal in-plant training program. Training will generate a profit in your plant.
XML is rapidly emerging as a standard for exchanging business data on the World Wide Web. For the foreseeable future, however, most business data will continue to be stored in relational database systems. Consequently...
详细信息
ISBN:
(纸本)1558607153
XML is rapidly emerging as a standard for exchanging business data on the World Wide Web. For the foreseeable future, however, most business data will continue to be stored in relational database systems. Consequently, if XML is to fulfill its potential, some mechanism is needed to publish relational data as XML documents. Towards that goal, one of the major challenges is finding a way to efficiently structure and tag data from one or more tables as a hierarchical XML document. Different alternatives are possible depending on when this processing takes place and how much of it is done inside the relational engine. In this paper, we characterize and study the performance of these alternatives. Among other things, we explore the use of new scalar and aggregate functions in SQL for constructing complex XML documents directly in the relational engine. We also explore different execution plans for generating the content of an XML document. The results of an experimental study show that constructing XML documents inside the relational engine can have a significant performance benefit. Our results also show the superiority of having the relational engine use what we call an "outer union plan" to generate the content of an XML document.
In urban areas the daylight available to a building directly from the sky may be compromised, and the contribution from reflected daylight can become more significant. The influence of external obstructions and fa...
详细信息
Rapid urbanization in Ekurhuleni Metropolitan Municipality has transformed local landscapes, impacting stormwater management, rainfall, and temperature patterns. This study introduces a novel approach by integrating G...
详细信息
This paper presents the design and implementation of a smart automated bottle-filling industry using Programmable Logic Controllers (PLC)-Supervisory Control and Data Acquisition (SCADA) systems. The automation proces...
详细信息
ISBN:
(纸本)9789811516160;9789811516153
This paper presents the design and implementation of a smart automated bottle-filling industry using Programmable Logic Controllers (PLC)-Supervisory Control and Data Acquisition (SCADA) systems. The automation processes include bottle-filling, warehouse management and energy-efficient lighting systems. A SCADA simulation of the bottle-filling industry, demonstrating the complete processes that can aid in monitoring and control has been developed. After the cleaning and filling processes, the bottles are transported to the warehouses with barcode labelling for effective sorting process. Appropriate warehouse management techniques coupled with state-of-the-art crane systems and automatic lighting solutions can improve sorting process and the energy-efficiency and throughput of the automated system. Hence, a complete integrated industrial automation system has been designed as a single system to improve flexibility, reliability, efficiency and the overall productivity of the industrial environment.
暂无评论