scholarly journals Estudio de la interacción de luz con sustancias con alto contenido de sacarosa y fructuosa

2019 ◽  
pp. 1-7
Author(s):  
Armando Gómez-Vieyra ◽  
Ismael Gabriel Cosme-Cisneros ◽  
José Raúl Miranda-Tello ◽  
Sonia Hernández-Mota
Keyword(s):  
Low Cost ◽  
Light Polarization ◽  
Industrial Processes ◽  
Graphical Interface ◽  
Molecular Physics ◽  
Extensive Training ◽  
Upper Secondary ◽  
Electronic Instrumentation ◽  
Mechanical Elements ◽  
Teaching Learning

In the teaching-learning process at the upper and upper secondary levels, it is difficult to motivate students about the importance of knowing and applying basic concepts in industrial processes. Therefore, it is proposed how to apply the concept of light polarization and spectroscopy to visualize the differences between substances based on sucrose or fructose. Both techniques have been applied in various industrial processes; their cost is regularly high and require extensive training. In this paper, we present the results of the implementation of a low cost linear polariscope for the analysis of natural bee honey and syrups based on sucrose. The arrangement consists of a semiconductor laser, a photodiode, two polarizers, a stepper motor and some mechanical elements, all controlled by the computer through a graphical interface. To validate the results, an optical array based on a low-cost commercial spectroscope is used. By implementing this experimental arrangement, the concepts of polarization, optical activity, atomic-molecular physics, electronic instrumentation and principles of equipment design and construction are involved.

scholarly journals Changing Policy of English Teaching Approach at Indonesian Secondary Schools In Face of ASEAN Economic Community: A Few Notes to Relevant Ministries

2016 ◽  
Vol 15 (2) ◽  
Author(s):  
Ardi Marwan
Keyword(s):  
Secondary Schools ◽  
English Learning ◽  
School Students ◽  
Study Program ◽  
English Teaching ◽  
Upper Secondary ◽  
Extra Curricular Activities ◽  
English Speaking ◽  
Asean Economic Community ◽  
Teaching Learning

This article provides information about a research aiming to identify causes of secondary school students’ failure to acquire English effectively and provide recommendations to relevant ministries to better deal with these problems.  A qualitative design involving a number of students as well as teachers from lower and upper secondary schools and pre-service teachers from a training college was used. Findings of this research revealed that issues of English teacher quality, English study program graduates’ quality, lack of English learning hours at school, the absence of extra-curricular activities for English exposure and English speaking environment, English national exam, the underuse and inexistence of facilities and ineffective monitoring system were found to be the major contributors of students’ English learning ineffectiveness. This study, therefore, recommends the relevant ministries to cope with these issues urgently or else this unfavorable situation will remain unchanged in future years.     Keywords: English, teaching, learning, quality, policy, change

scholarly journals A viabilidade do uso do pêndulo simples como ferramenta no ensino de física do ensino médio para o cálculo da aceleração da gravidade local

2020 ◽  
Vol 42 ◽  
pp. e1
Author(s):  
Cristiano Rocha da Cunha ◽  
Lúcio Ângelo Vidal ◽  
Guilherme Tales da Silva ◽  
Ruth Silva Pereira ◽  
Rita Santana Ramos Silva ◽  
...  
Keyword(s):  
High School ◽  
Learning Process ◽  
Low Cost ◽  
Simple Pendulum ◽  
Oscillatory Movement ◽  
High School Classrooms ◽  
G Value ◽  
Acceleration Of Gravity ◽  
Teaching Learning

Knowing the g-value of acceleration of gravity is of paramount importance in various analyzes, and there are several ways of obtaining it experimentally. Here, searching for resources that are easy to apply in high school classrooms, the authors opted for the observation of a simple pendulum, performing a series of measurements of the pendulum period and applying them to the equations (appropriately manipulated for this experiment) of this oscillatory movement. The experiment was carried out in four steps: one with a mass of 10 grams and three with a mass of 20 grams; two with ten swings, one with fifteen and one with twenty. As a result, four values of local acceleration were estimated,which were compared, using the theory of errors, with the value made available in the literature. With these data, the feasibility of using this device in the teaching-learning process was verified, given its ease of handling and assembly, its low cost and its negligible error with the value of the literature.

Intelligent Monitoring and Control of Industrial Processes Through the Internet

2002 ◽  
Author(s):  
Poi Loon Tang ◽  
Clarence W. de Silva ◽  
George Wang
Keyword(s):  
Low Cost ◽  
Web Server ◽  
Internet Technology ◽  
Industrial Processes ◽  
Main Element ◽  
Monitoring And Control ◽  
Process Scheduling ◽  
Multiple Control ◽  
Wide Availability ◽  
And Control

This paper presents a framework for developing a universal network infrastructure that would allow web-based monitoring and control of industrial processes, research facilities, and academic experiments. Internet technology is used here for its versatility, wide availability, and relative low cost. The main element of the infrastructure is a web-server, which connects to multiple control-servers, which in turn are connected to various processing modules within a local industrial facility, Since the web-server is the system centerpiece, which provides smooth information flow, a robust, intelligent, and autonomous scheduling scheme is required. Once such infrastructure is established, remote users in an academic or research environment, or in an industrial environment will be able to carry out a variety of tasks including experiments, monitoring and supervision, process scheduling and reconfiguration, using a web-browser. The flexibility and modularity of the developed networked infrastructure provide the rationale for implementing a multi-level hierarchical monitoring and control structure for a process. The usefulness of such a hierarchical structure is demonstrated through an application example on an industrial fish processing machine, which incorporates intelligent adaptive control.

Design and Application of an In-Line Measurement System for Polarization Parameters

2013 ◽  
Vol 321-324 ◽  
pp. 447-452
Author(s):  
Zhang Bin Wen ◽  
Mi Zhou ◽  
Zhe Chen ◽  
Yun Han Luo
Keyword(s):  
Measurement System ◽  
High Speed ◽  
Low Cost ◽  
Extinction Ratio ◽  
Polarization State ◽  
Light Polarization ◽  
Polarization Measurement ◽  
Degree Of Polarization ◽  
Stokes Vector ◽  
Line System

An in-line all-fiber measurement system for polarization parameters is designed and fabricated in this paper. This system implements accurate control of polarization state, together with in-line, accurate, and high-speed measurement of Stokes vector. It can measure the light polarization parameters such as States of Polarization (SOP), Degree of Polarization (DOP), Light Polarization Extinction Ratio (LPER), and related losses of polarization. Besides, polarization monitoring and stabilizing can be achieved using this system. Because there is no discrete device concluded, the optical path of this system is completely constituted by optical fiber, which makes the entire system low-cost, with small size and low insertion loss. Keywords: All-fiber, polarization control, polarization measurement, in-line system, Stokes vector

scholarly journals Development of Graphical Interface Simulator of Advanced Wastewater Treatment Design Process for Teaching, Learning, and Assessment

Designs ◽  
2019 ◽  
Vol 3 (2) ◽  
pp. 27 ◽  
Author(s):  
Aliashim Albani ◽  
Mohd Zamri Ibrahim
Keyword(s):  
Wastewater Treatment ◽  
Higher Learning ◽  
Graphical Interface ◽  
The Subject ◽  
Advanced Wastewater Treatment ◽  
Teaching Learning ◽  
Learning Institutions ◽  
Treatment Design ◽  
Potential Tool

This paper presents the concept of check and balance approach in teachıng, learning and assessment processes with the development of a graphical interface tool to solve an advanced wastewater treatment design problem. The developed graphical interface improves the quality of teaching, learning, and the assessment of both, understanding the calculation approaches, as well as understanding the concepts. The tool acts as a calculator or a simulator of a unit converter, population equivalent, designing sewerage systems and selected unit processes of advanced wastewater treatment. A close-ended survey assessment was conducted with a total of 49 respondents who were the registered students for the subject of advanced wastewater treatment. About 79% of respondents agreed that it was hard to score a high mark in the advanced wastewater treatment exam. However, 100% of respondents agreed that the tool could help them to accelerate their understanding of the subject topic. All things considered, the findings of this study show that the developed tool is a potential tool that can aid in the teaching, learning, and assessment processes of any difficult subject that is taught in higher-learning institutions.

Potential applications of deep eutectic solvents in natural gas sweetening for CO2 capture

2017 ◽  
Vol 33 (6) ◽  
Author(s):  
Tayeb Aissaoui ◽  
Inas M. AlNashef ◽  
Umair A. Qureshi ◽  
Yacine Benguerba
Keyword(s):  
Carbon Dioxide ◽  
Natural Gas ◽  
Co2 Capture ◽  
Low Cost ◽  
Deep Eutectic Solvents ◽  
Industrial Processes ◽  
Green Solvents ◽  
Gas Sweetening ◽  
Potential Applications ◽  
Natural Gas Sweetening

AbstractNovel solvents named deep eutectic solvents (DESs) have been intensively investigated in recent years. Their non-toxicity, biodegradability, low volatility, easy preparation and low cost make them promising green solvents for several industrial processes. This article provides a status review of the possible applications of DESs in natural gas (NG) sweetening by carbon dioxide (CO

scholarly journals Clinical communication in medical practice internship: articulating the skill to an integrated and competence-oriented curriculum

2021 ◽  
Vol 45 (3) ◽  
Author(s):  
Ana Glaucia Paulino Lima ◽  
Danielle Abdel Massih Pio ◽  
Ana Carolina Nonato ◽  
Mara Quaglio Chirelli ◽  
Roseli Vernasque Bettini
Keyword(s):  
Medical Students ◽  
Educational Process ◽  
Biomedical Knowledge ◽  
Clinical Communication ◽  
Student Work ◽  
Communication Practice ◽  
Extensive Training ◽  
Teachers And Students ◽  
The Subject ◽  
Teaching Learning

Abstract: Introduction: Clinical Communication is an instrument for interaction between professionals and between them and users, being extremely important to ensure integral care. The complexity of the users’ biopsychosocial demands must be understood and worked through skills developed beyond the technical and biomedical knowledge, including a more extensive training in relation to the human being. In the curriculum of a medical school institution in the interior of São Paulo, Clinical Communication is a skill expected of the student in all undergraduate scenarios. During medical internship, it is important that communication practice be developed in an integrated fashion, considering the biopsychosocial aspects of the subject under care; however, the literature demonstrates that this skill is superficially explored in training, causing difficulty for its effectiveness. Thus, it can be assumed that there are different understandings about the concept of Clinical Communication and its theoretical-practical articulation between teachers and students, being necessary to analyze this educational process during internship. Objective: Thus, the objective was to question how teachers and students from a medical course internship understand the teaching-learning aspects about Clinical Communication in an integrated and competence-based curriculum. Method: This was a qualitative study, which included eleven 5th-year medical students, twelve 6th-year medical students and nine internship teachers. The interviews were semi-directed and carried out based on an interview script, which were later transcribed and submitted to the analysis of content, thematic modality. Results: Three categories emerged from the concepts and characteristics of the topics “Clinical Communication” and “Curriculum”: 1) What involves clinical communication; 2) Development of clinical communication during the undergraduate course and 3) Proposals for the training of internship students and teachers. It was observed that the participants understood the concept of Clinical Communication and its importance for the students’ training, but also that it is difficult to develop this training due to the lack of knowledge about the curriculum, student work overload and teacher devaluation. Conclusion: The study considers the development of Clinical Communication skills of internship students and the possibilities for reflection on gaps mentioned by students and teachers.

scholarly journals UPPER-SECONDARY SCHOOL STUDENTS’ APPROACHES TO SCIENCE EXPERIMENTS IN AN EXAMINATION DRIVEN CURRICULUM CONTEXT

2020 ◽  
Vol 19 (4) ◽  
pp. 523-535
Author(s):  
Tamirirofa Chirikure
Keyword(s):  
Secondary School ◽  
Scientific Reasoning ◽  
Secondary School Students ◽  
Procedural Knowledge ◽  
Upper Secondary School ◽  
Iterative Approach ◽  
School Students ◽  
Linear Approach ◽  
Upper Secondary ◽  
Teaching Learning

This research explored upper-secondary school students’ approaches when they engage in planning and conducting science experiments. Approaches to science experiments are important because they provide insight into students’ scientific reasoning and their enactment of scientific methods. An explanatory mixed-methods design was employed to determine and explain students’ approaches to science experiments. Data were generated by administering a 15-item Approaches to Science Experiments Questionnaire (ASEQ) on 211 participants and interviewing a smaller sample of 33. The linear approach was predominant while the divergent approach was least adopted by the participants. The teaching-learning context, substantive and procedural knowledge lead to specific approaches and the emergence of subcategories of the three broad approaches. Capable students engaged in a self-directed iterative approach while external help resulted in an assisted iterative approach. Rigid and contrived linear approaches were a result of time constraints, substantive and procedural shortcomings. Scattergun and blanking divergent approaches emerged from extreme weaknesses in substantive and procedural knowledge. Assessing practical skills through long-term projects is recommended to focus more on developing students’ scientific reasoning and process skills. Research with the ASEQ in other teaching-learning cultures, observing students in action and analysing their write-ups could provide deeper insights into approaches to science experiments. Keywords: science experiments, divergent approach, iterative approach, linear approach, mixed methods.

scholarly journals Low power GPS drifters with local storage and GSM modem made from off the shelf components

2019 ◽  
Author(s):  
Rolf Hut ◽  
Thanda Thatoe Nwe Win ◽  
Thom Bogaard
Keyword(s):  
Software Engineering ◽  
Low Power ◽  
Real Time ◽  
Low Cost ◽  
Gps Receivers ◽  
Open Hardware ◽  
Hydrodynamic Behaviour ◽  
Extensive Training ◽  
Hardware Component ◽  
Local Storage

Abstract. Drifters that track their position are important tools in studying the hydrodynamic behaviour of rivers. Drifters that can be tracked in real time have so far been rather expensive. Recently both GPS receivers and GSM modems have become available at lower prices to tinkering scientists due to the rise of the Open Hardware revolution and the associated Arduino ecosystem. This article serves two goals. Firstly, we provide detailed instructions on how to build a Low Power GPS drifter with local storage and GSM model that we tested in a fieldwork on the confluence of the Chindwin and Ayeyarwady rivers in Myanmar. These instructions allow fellow geoscientists to recreate the device. Secondly, we set the question: "Has the Open Hardware revolution progressed to the point that a low power GPS drifter that wireless transmits its position can be made from Open Hardware component by geoscientists without extensive training or expertise in electrical and software engineering? We feel this question is relevant and timely as more low-cost Open Hardware devices are promoted but in practice applicability often is restricted to the 'tinkering engineer'. We argue that because of the plug and play nature of the components geoscientist should be able to construct these type of devices. However, to get such devices to operate at low power levels that fieldwork often requires detailed (mircro)electrical expertise.

scholarly journals The Classroom as a Makerspace: Use of Tablets and Cutting Plotter to Create Pop-Up Cards in Educational Environments

2019 ◽  
Vol 14 (10) ◽  
pp. 116
Author(s):  
Alejandro Bonnet de León ◽  
Jose Luis Saorín ◽  
Jorge De la Torre-Cantero ◽  
Cecile Meier ◽  
Eliseo García Marrero
Keyword(s):  
Secondary School ◽  
Low Cost ◽  
Three Dimensional ◽  
Traditional Classrooms ◽  
Educational Environments ◽  
Folding Paper ◽  
The Subject ◽  
Teaching Learning ◽  
Made In ◽  
Digital Tablets

In some classrooms the use of digital tablets for students is already standardized and is integrated into the teaching-learning process of the school. On the other hand, the use of cutting plotters is not common, although they are low-cost, easy to use and transportable devices. These machines are usually found in digital fab-rication spaces such as Makerspaces, Fab labs, etc. However, it is interesting to introduce these technologies in traditional classrooms. This article describes an experience carried out at Colegio San Isidro, Los Salesianos de la Orotava, Tene-rife in the 3rd year of secondary school in the subject of plastic, visual and audio-visual expression, in which an activity of design and creation of pop-up cards has been carried out. This activity is made in many subjects in order to develop crea-tivity or to understand three-dimensional concepts (mathematics, plastic, etc.). This activity involves cutting and folding paper that is usually done with scissors or cutter. It is proposed to digitalize this activity by means of digital tablets and portable cutting plotters. At the end of the activity, all the students were able to make their pop-up card using the proposed technologies and felt able to carry out the work autonomously.

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