scholarly journals Information Conversion in Measuring Channels with Optoelectronic Sensors

Sensors ◽  
2021 ◽  
Vol 22 (1) ◽  
pp. 271
Author(s):  
Vasyl V. Kukharchuk ◽  
Sergii V. Pavlov ◽  
Volodymyr S. Holodiuk ◽  
Valery E. Kryvonosov ◽  
Krzysztof Skorupski ◽  
...  
Keyword(s):  
Hardware Implementation ◽  
Optical Measurement ◽  
Measuring Channel ◽  
Metrological Characteristics ◽  
Design Stage ◽  
Stage Of Development ◽  
Information Transformation ◽  
Before And After ◽  
Measurement Channels ◽  
A Current

The purpose of this work is the authors’ attempt to identify the main phases of information transformation in measurement channels on the example of an optical measurement channel with microprocessor control. The authors include such phases: hardware implementation and analytical representation of an optical sensor`s converting functions and a current-to-voltage converter; based on the methods of experimental computer science, the converting functions and sensitivity are deduced, analytical dependences for estimation of a range of measurement are obtained. It is shown that the choice of information transmission type in the microprocessor measuring channel significantly affects the speed of the measuring channel. Based on the uncertainty in the form of entropy before and after measurements, the amount of information for measuring channels with optoelectronic sensors is estimated. The application of the results obtained in the work allows even at the design stage of physical and mathematical modeling to assess the basic static metrological characteristics of measuring channels, aimed at reducing the stage of development and debugging of hardware and software and standardization of their metrological characteristics.

scholarly journals TELEMEDICINE AS AN EFFORT TO IMPROVE PUBLIC KNOWLEDGE TO FIGHT COVID-19 PANDEMIC

2021 ◽  
Vol 2 (1) ◽  
pp. 6
Author(s):  
Sacharissa Zerlina Tsarwah Thirafi ◽  
Triadi Putra Paladan ◽  
Bonfilio Neltio Ariobimo ◽  
Barizatul Husniyah ◽  
Monica Tiara Arum Kinanthi ◽  
...  
Keyword(s):  
Health Promotion ◽  
Data Collection ◽  
Sampling Method ◽  
Public Knowledge ◽  
Inclusion Criteria ◽  
Collection Method ◽  
Before And After ◽  
Chain Transmission ◽  
A Current

The role of the community is an essential part to cut down the COVID-19 chain transmission, a current world pandemic. Knowledge determines a person's healthy behavior that can prevent transmission of COVID-19. This research’s goal is to analyze the effect of health promotion via telemedicine on increasing knowledge about COVID-19 prevention in the productive-age population in Indonesia. This study used one group pretest-posttest design and accidental sampling method involving 146 respondents based on the inclusion criteria. The data collection method was carried out by using a questionnaire containing simple and general questions related to COVID-19 that tested subjects before and after telemedicine health promotion. Based on the assessment of the questionnaire through pretest and posttest, there was an increase in the average knowledge after being given health education with telemedicine with p<0.001 (CI 95%). This study shows that telemedicine could significantly increase average knowledge about COVID-19 prevention in the productive-age population in Indonesia.

scholarly journals Emotions in leaders’ enactment of professional agency

2019 ◽  
Vol 31 (2) ◽  
pp. 143-165 ◽  
Author(s):  
Päivi Hökkä ◽  
Katja Vähäsantanen ◽  
Susanna Paloniemi ◽  
Sanna Herranen ◽  
Anneli Eteläpelto
Keyword(s):  
Qualitative Content Analysis ◽  
Leadership Coaching ◽  
Content Type ◽  
Current State ◽  
Before And After ◽  
State Of Affairs ◽  
Practical Implications ◽  
A Current

Purpose Although there has been an increase in workplace studies on professional agency, few of these have examined the role of emotions in the enactment of agency at work. To date, professional agency has been mainly conceptualised as a goal-oriented, rational activity aimed at influencing a current state of affairs. Challenged by this, this study aims to elaborate the nature and quality of emotions and how they might be connected to the enactment of professional agency. Design/methodology/approach Data are collected in the context of a leadership coaching programme that aimed to promote the leaders’ professional agency over the course of a year. The participants (11 middle-management leaders working in university and hospital contexts) were interviewed before and after the programme, and the data were analysed using qualitative content analysis. Findings Findings showed that emotions played an important role in the leaders’ enactment of professional agency, as it pertained to their work and to their professional identity. The study suggests that enacting professional agency is by no means a matter of purely rational actions. Practical implications The study suggests that emotional agency can be learned and enhanced through group-based interventions reflecting on and processing one’s own professional roles and work. Originality/value As a theoretical conclusion, the study argues that professional agency should be reconceptualised in such a way as to acknowledge the importance of emotions (one’s own and those of one’s fellow workers) in practising agency within organisational contexts.

scholarly journals Design of Mathematics Student Worksheet based on Discovery Learning Approach to Improving Mathematical Representation Ability Students of Grade VII Junior High School in Indonesia

2018 ◽  
Vol 7 (4.30) ◽  
pp. 26 ◽  
Author(s):  
Eka Luthfiana Lathifah ◽  
Supar Man
Keyword(s):  
High School ◽  
Junior High School ◽  
Junior High ◽  
Discovery Learning ◽  
Design Stage ◽  
Mathematical Representation ◽  
Design Development ◽  
Central Java ◽  
Stage Of Development ◽  
Mathematics Student

The ability of mathematical representation is very important for someone to help in solving the problem. This type of research is a development research. This article aims to obtain a student workbook design based on Discovery Learning that is oriented towards students' mathematical representation abilities. This research is a research development of Research and Development (R & D) with 4D development model which includes defining, design, development, and dissemination. This study is limited only to the design stage. Subjects in this study are students of junior high school grade VII in central java Indonesia. An instrument used in this study in the form of essay questions, questionnaire and interview guidelines. This research resulted in the worksheet (LKS) design based on Discovery Learning based on the ability of mathematical representation to improve the ability of mathematical representation. The next stage will be the research stage of development and dissemination to produce a valid, practical, and useful worksheet.

Testing of a Folded Plate Space Structure

1987 ◽  
Vol 2 (2) ◽  
pp. 115-121
Author(s):  
D. Ho ◽  
P. K. K. Lee ◽  
H. W. Chung ◽  
W. C. Keung
Keyword(s):  
Finite Element ◽  
Space Structure ◽  
Sufficient Accuracy ◽  
Design Stage ◽  
Stage Model ◽  
The Finite Element Method ◽  
Element Analysis ◽  
Actual Structure ◽  
The Finite Element Analysis ◽  
Before And After

A reinforced concrete folded plate space structure of span 28 m and clear height 9·4 m was constructed as a games hall. The structure was analysed using the finite element method. At the design stage, model tests were carried out to check the accuracy of the method of analysis. To assess the behaviour of the actual structure subject to its self-weight, strains and deflections were monitored during construction both before and after removal of formwork. The tests confirmed that results given by the finite element analysis are of sufficient accuracy for the purpose of design, irrespective of the assumptions involved.

Learning Model Based on Multiple Representation to Increase Memorize Ability of Short Letter of Al Qur'an

2018 ◽  
Vol 6 (04) ◽  
Author(s):  
T.Nurbani Chalid ◽  
Myrnawati Crie Handini ◽  
Elindra Yetti
Keyword(s):  
Learning Model ◽  
T Test ◽  
Assessment Instrument ◽  
Expert Assessment ◽  
P Value ◽  
Applied Model ◽  
Stage Of Development ◽  
Field Note ◽  
Significant Difference ◽  
Before And After

The purpose of this study is to produc a learning model to memorize the Qur'an which corresponds to the stage of development and learning styles of children. The ability to memorize the Qur'an is marked marked by ability to recognize namely ability to verify and to match and the ability to remember namely the ability to corespond dan ability to retrieving orally. The method used in this research is research and development, modification of research model by Borg and Gall and Dick and Carrey. The data were collected by observation technique, questionnaire, interview, expert assessment instrument and field note. Quantitative data from the questionnaire results were analyzed using descriptive analysis technique with percentage, while the test result data (pretest and posttest) the ability to memorize Al-Qur'an was analyzed by t test (t-test) using SPSS program. The result of paired sample t test in the experimental class shows 0.000 less than 0,05 so there is difference before and after applied model. While the result of t test in control class showed value 0,423 and gt; 0,05 so there is no significant difference before and after applied model. The result of independent sample t test shows 0.000 so p value less than 0,05 and it can be concluded that there is a significant difference between the control class and the experimental class.

Topology Optimization in Support of Spaceborne Device Based on Variable Density Method

2013 ◽  
Vol 568 ◽  
pp. 109-113
Author(s):  
Bing Hui Wu ◽  
Bao Jun Pang ◽  
Zong Quan Deng
Keyword(s):  
Topology Optimization ◽  
Base Plate ◽  
Basic Structure ◽  
Variable Density ◽  
Design Stage ◽  
Finite Model ◽  
Thin Wall ◽  
Density Method ◽  
Before And After ◽  
Optimization Function

Support is not load bearing components, but also carrier of other component. To reduce the valid load, mass of the support should be low down under the condition of enough stiffness and strength. Topology optimization is employed here to solve the problem. The finite model must be built up according to the basic structure of analysis object in topology optimization. The supports are typical box-style part with thin-wall. Thus, solid model is adopted in ANSYS, and the element shell93 is employed here. Definition of optimization function based on linear-static analysis was employed here. Take maximum flexibility as the constrain conditions of the structure. And the optimality criterion (OC) method was adapted to the problem due to it is suitable for the problem which target is volume. Define the base plate, face and back of the support as the topology area separately. Main part of support is optimization with the variable density method. The results before and after the optimization are compared. When the topology form is unknown, the best topology relation of the structure in the initiate design stage of the whole product has very important meanings.

Virtual Assembly Environment Modelling

2009 ◽  
Author(s):  
Ulises Zaldivar-Colado ◽  
Samir Garbaya
Keyword(s):  
Virtual Environment ◽  
Haptic Feedback ◽  
Design Stage ◽  
Assembly Sequence ◽  
Interaction Technique ◽  
Sequence Generation ◽  
Stage Of Development ◽  
Assembly Sequence Generation ◽  
Assembly Tasks ◽  
Environment Modelling

In this paper, we present the virtual environment of assembly sequence generation of a product at the design stage. The interaction technique developed for the manipulation of virtual parts includes visual and haptic feedback limited to force sensation in the fingertips and weight and inertia parts sensation. At this stage of development, the parts and subassemblies have kinematics behaviour in the virtual scene. We present some guidelines for modeling a generic virtual environment for performing assembly tasks. Virtual parts modeling and connections modeling is based on characteristics of real parts and connections. The mating phase of assembly is based on the Snap-Fitting technique, which is improved by the addition of vectors in the symmetry axis of virtual parts. An XML modeling allows the environment to be generic and supporting different products.

A Challenge for Strain Optical Measurement for Bimetal

2011 ◽  
Vol 382 ◽  
pp. 392-395 ◽  
Author(s):  
De Hai Zhang ◽  
Ming Yi Wang ◽  
Yan Qin Li
Keyword(s):  
Optical Measurement ◽  
Effective Means ◽  
Forming Limit Diagram ◽  
Fixed Number ◽  
Fe Analysis ◽  
Image Correlation ◽  
Forming Limit ◽  
Bottom Surface ◽  
Circle Center ◽  
Before And After

A challenge method composed of digital image correlation (DIC) method, circle coordinate grid technology and finite element (FE) software to conduct strain measurement of bimetal is presented. This approach can carry out the prediction and measurement of strain. The coordinate grids are painted on top and bottom surface of bimetal when experiment and simulate specimen. Each node is named a fixed number in turn, and these numbers can precisely help to identify the same name point between FE software and the experiments specimen. The bimetal sheet has been tested using DIC software, circle center of the coordinates points can be accurately identify on the surface of bimetal. The changing of distance between adjacent points is computed to construct the forming limit diagram before and after forming. It is an effective means to evaluate the forming performance of bimetal and verify the reasonable of FE analysis results. 2A12 metal is conducted experiment using the challenge method in this paper, bimetal has not conduct experiment due to some reasons.

scholarly journals Use of statistical analysis methods in processing population survey data

2021 ◽  
pp. 58-60
Author(s):  
Vasilij Kalinchik ◽  
Vitaliy Pobigaylo ◽  
Vitaliy Kalinchyk ◽  
Daniil Filjanin
Keyword(s):  
Total Error ◽  
Current Transformer ◽  
Measuring Channel ◽  
Measuring Circuit ◽  
Metrological Characteristics ◽  
Measuring Instruments ◽  
Voltage Transformer ◽  
Current Transformers ◽  
Collection Device ◽  
Communication Lines

The article analyzes the structures of the measuring channels of electricity metering systems. It is shown that such a structure is determined by the types of measuring instruments used and the scheme of their connection, in particular, by the types of electricity meters installed at the metering points. Moreover, the counters can have a pulse or interface information output. It is shown that the path for measuring and metering electricity includes a measuring circuit consisting of measuring current and voltage transformers, an electricity meter, communication lines, a metering device and a data collection device. The applied method is based on the standardization of the metrological characteristics of individual elements of the measuring path and their synthesis based on the metrological characteristics of the entire electricity metering system. To calculate the total error of the measuring channel, a formula is used that takes into account only the errors of the measuring circuit. It is shown that in recent years there has been a tendency when measuring current transformers and, accordingly, electricity meters operate in the mode of low current loads. In this case, the errors of the elements of the measuring path are poorly studied. The graphs of errors of current transformers depending on load currents are given. It is shown that the values of the errors of current transformers vary with the magnitude of the load current and are in the region of negative values. Therefore, the wrong choice of current transformers can lead to a significant underestimation of electricity. The errors of voltage transformers depend mainly on the load on the secondary winding and do not significantly affect the total error. The resulting error of the measuring path current transformer - voltage transformer - electricity meter in the area of low loads is given. A change in errors in the area of low loads leads to serious metrological losses (underpayment of electricity). In the automation of electricity metering, graphs of changes in errors in the area of low loads are presented, which can serve as a basis for correcting the error of the measuring paths.

scholarly journals APPLICATION OF THE APPROACH TO CREATE AN INFORMATION CONSTRUCTION MODEL AT THE PRE-DESIGN STAGE OF INVESTMENT AND CONSTRUCTION PROJECTS

2021 ◽  
pp. 137-144
Author(s):  
O.Y. Chertkov ◽  
◽  
D.O. Khokhrіakova ◽  
Keyword(s):  
Construction Projects ◽  
Information Modeling ◽  
Design Stage ◽  
Construction Site ◽  
Tree Model ◽  
Stage Of Development ◽  
Information Construction ◽  
Construction Model ◽  
And Control ◽  
Working Out

Abstract. At the present stage of development of the construction industry, steps to improve the efficiency of investment and construction projects can no longer be considered outside the context of construction information modeling technologies. Today, one of the main criteria for optimizing work on investment and construction projects is to reduce the time spent searching, working out and agreeing on spatial, financial, and temporal information about the construction object, therefore, the issue of the correct organization of information modeling of a construction site is quite relevant. In most cases, the design assignment is drawn up in the form given in Appendix B DBN A 2.2-2-2014 and is formal in nature. The presence of a design assignment, drawn up using the tools proposed below, reflects the thoroughness of the customer's elaboration of an investment and construction project, and reduces the risks of its implementation. The proposed methodology is based on three components of counter design, such as disaggregation, aggregation, and decomposition, from which its name – DAD –approach comes from. Allocation of structural elements in the structure of a building by disaggregation (analysis of alternative options) allows to create its model in the form of a hierarchical structure consisting of detailed and mutually synchronized parts - the configuration of the building. In accordance with the configuration of the construction site, hierarchical numbering is further reflected at all stages of design and in all its sections, incl. stamps of drawings and local estimates. This creates a unified system of interconnection and control of project sections. The creation of a construction site configuration in the form of a tree model with hierarchically numbered elements at the pre-design stage allows it to be applied at subsequent stages of the life cycle of a construction object in information modeling technologies. The use of the DAD – approach in counter-design is intended to increase the efficiency of the implementation of investment and construction projects.

Sign in / Sign up

Export Citation Format

Share Document