scholarly journals Engineering and economic analysis of the production of sieve shaker for teaching particle size to students with visual impairment

2021 ◽  
Vol 9 ◽  
Author(s):  
Rina Maryanti ◽  
◽  
Asep Bayu Dani Nandiyanto ◽  
Achmad Hufad ◽  
Sunardi S ◽  
...  
Keyword(s):  
Particle Size ◽  
Economic Evaluation ◽  
Visual Impairment ◽  
Small Scale ◽  
Educational Goals ◽  
Students With Special Needs ◽  
Economic Parameters ◽  
Balance Analysis ◽  
Economic Perspectives ◽  
Definition Of

The purpose of this study was to evaluate the feasibility study from the engineering and economic perspectives in the production of sieve shaker for teaching particle size to students with visual impairment. The sieve shaker is important as a tool for improving students' understanding of the definition of particles and their sizes. Different from other sieve shakers for industrial purposes, the present sieve shaker is inexpensive, simple, user-friendly, and portable. Since it is made for educational goals only and can be used for developing countries, the total cost is inexpensive. Engineering analysis was performed based on a mass balance analysis, whereas the economic evaluation was carried out using several economic parameters under the ideal and non-ideal conditions in 20 years of the project. The engineering evaluation confirmed the potentiality of the project even it is in small-scale industries because all processing steps could be carried out using commercially available equipment. Economic evaluation results showed positive values for all economic parameters with a few exceptions. This research was complemented by theories to support the definition and the importance of sieve shaker for supporting the education of students with special needs.

scholarly journals ADAPTING SCIENCE CLASSROOMS FOR VISUALLY IMPAIRED STUDENTS: ISSUES, CHALLENGES AND PLAUSIBLE SOLUTIONS

2021 ◽  
Vol 7 (3) ◽  
Author(s):  
Shruti Pandey ◽  
Yogendra Pandey
Keyword(s):  
Visual Impairment ◽  
Visually Impaired ◽  
Science Curriculum ◽  
Theoretical Perspective ◽  
Educational Goals ◽  
Science Classrooms ◽  
Students With Special Needs ◽  
Accuracy And Precision ◽  
Visually Impaired Students ◽  
Science Educators

The goals of education for the students with special needs are no different than the educational goals for sighted children. However, the means of attaining these goals are more complex and demand significant modifications, adaptations and extensions of the curriculum and the teaching process. Research shows that students with exceptionalities such as visual impairment are better academically engaged in daily classes and have opportunities for active learning. Consequently, it is important to develop systematic methods for teaching concepts. The instructor of students with visual impairment will logically find the principles that direct the learning process. Concepts for students use difficult methods and oral examples should be carefully taught where appropriate. The design of individual courses differs from the student’s needs and from the various circumstances under which a concept is to be enrolled. In broader concept science as a subject is dedicated to developing scientific attitudes such as objective outlook, spirit of enquiry, truthfulness and integrity, inventiveness, accuracy and precision. Therefore, in the science classrooms science educators must respond to their needs by motivating science and laboratory and science students with visually impaired conditions. Inadequate funding is the biggest problem in giving students with visual impairment fair access to education. The amount of teacher assistance or integration assistance is inadequate to meet the requirements. We do not have enough preparation and professional support in relation to the practical aspects of the science curriculum. This paper provides a theoretical perspective for the students with visual impairment to understand the challenges of entering science classrooms. The ideas in this article will help educators create opportunities for visually impaired students to improve science learning. <p> </p><p><strong> Article visualizations:</strong></p><p><img src="/-counters-/edu_01/0865/a.php" alt="Hit counter" /></p>

scholarly journals The definition of an atmospheric database for Aeolus

2011 ◽  
Vol 4 (1) ◽  
pp. 67-88 ◽  
Author(s):  
G. J. Marseille ◽  
K. Houchi ◽  
J. de Kloe ◽  
A. Stoffelen
Keyword(s):  
High Resolution ◽  
Meteorological Data ◽  
Sampling Strategy ◽  
Laser Wavelength ◽  
Geographic Region ◽  
Atmospheric Dynamics ◽  
Specific Humidity ◽  
Small Scale ◽  
Horizontal Line ◽  
Definition Of

Abstract. The definition of an atmospheric database is an important component of simulation studies in preparation of future earth observing remote sensing satellites. The Aeolus mission, formerly denoted Atmospheric Dynamics Mission (ADM) or ADM-Aeolus, is scheduled for launch end of 2013 and aims at measuring profiles of single horizontal line-of-sight (HLOS) wind components from the surface up to about 32 km with a global coverage. The vertical profile resolution is limited but may be changed during in-orbit operation. This provides the opportunity of a targeted sampling strategy, e.g., as a function of geographic region. Optimization of the vertical (and horizontal) sampling strategy requires a characterization of the atmosphere optical and dynamical properties, more in particular the distribution of atmospheric particles and their correlation with the atmospheric dynamics. The Aeolus atmospheric database combines meteorological data from the ECMWF model with atmosphere optical properties data from CALIPSO. An inverse algorithm to retrieve high-resolution particle backscatter from the CALIPSO level-1 attenuated backscatter product is presented. Global weather models tend to underestimate atmospheric wind variability. A procedure is described to ensure compatibility of the characteristics of the database winds with those from high-resolution radiosondes. The result is a high-resolution database of zonal, meridional and vertical wind, temperature, specific humidity and particle and molecular backscatter and extinction at 355 nm laser wavelength. This allows the simulation of small-scale atmospheric processes within the Aeolus observation sampling volume and their impact on the quality of the retrieved HLOS wind profiles. The database extends over four months covering all seasons. This allows a statistical evaluation of the mission components under investigation. The database is currently used for the development of the Aeolus wind processing, the definition of wind calibration strategies and the optimization of the Aeolus sampling strategy.

Developing a functional definition of small-scale fisheries in support of marine capture fisheries management in Indonesia

Marine Policy ◽  
2019 ◽  
Vol 100 ◽  
pp. 238-248 ◽  
Author(s):  
Abdul Halim ◽  
Budy Wiryawan ◽  
Neil R. Loneragan ◽  
Adrian Hordyk ◽  
M. Fedi A. Sondita ◽  
...  
Keyword(s):  
Fisheries Management ◽  
Small Scale ◽  
Small Scale Fisheries ◽  
Definition Of

scholarly journals Systematic Review on Food Safety and Supply Chain Risk Assessment Post Pandemic: Malaysian Perspective

2021 ◽  
Vol 5 ◽  
Author(s):  
Md Saad Nurul Eiman ◽  
Firdaus Muhammad Nurul Azmi Aida ◽  
Trias Mahmudiono ◽  
Siva Raseetha
Keyword(s):  
Supply Chain ◽  
Food Safety ◽  
Food Supply ◽  
Small Scale ◽  
Supply Chain Risk ◽  
Food Supply Chain ◽  
Economic Sectors ◽  
Definition Of ◽  
Novel Coronavirus ◽  
The Impact

The novel coronavirus disease 2019, or COVID-19, is a recent disease that has struck the entire world. This review is conducted to study the impacts of the COVID-19 pandemic to food safety as well as the food supply chain. The pandemic has caused various changes around the world as numerous countries and governments have implemented lockdowns and restrictions to help curb the rising cases due to COVID-19. However, these restrictions have impacted many aspects of everyday life, including the economic sectors such as the food industry. An overview of the current COVID-19 situation in Malaysia was discussed in this review along with its implication on food safety and food supply chain. This is followed by a discussion on the definition of food safety, the impact of the pandemic to food safety, as well as the steps to be taken to ensure food safety. Hygiene of food handlers, complete vaccination requirement, kitchen sanitation and strict standard operating procedures (SOPs) should be in place to ensure the safety of food products, either in food industries or small scale business. Additionally, the aspect of the food supply chain was also discussed, including the definition of the food supply chain and the impact of COVID-19 to the food supply chain. Travel restriction and lack of manpower had impacted the usual operation and production activities. Lack of customers and financial difficulties to sustain business operational costs had even resulted in business closure. As a conclusion, this article provides insight into crucial factors that need to be considered to effectively contain COVID-19 cases and highlights the precaution methods to be taken through continuous monitoring and implementation by Malaysian government.

scholarly journals Geographical and logistical factors of sustainable development of rural tourism in the context of regional economy

2016 ◽  
pp. 9-14
Author(s):  
I. Smyrnov
Keyword(s):  
Sustainable Development ◽  
Large Scale ◽  
Regional Economy ◽  
Local Economy ◽  
Rural Tourism ◽  
Small Scale ◽  
Resource Base ◽  
Tourist Flows ◽  
Definition Of ◽  
The Impact

Rural tourism is now seen as an important direction of development of the regional economy. From the perspective of sustainable development rural tourism affects the economic, social and environmental aspects of the regional and local economy. Rural tourism is closely linked with agrotourism, eco-tourism, natural tourism and so on. Sustainable rural tourism can be realized by applying logistic, geographic and marketing approaches as components of sustainable development strategies. Logistics approach is determined by logistic potential of resource base of rural tourism and appropriate tourist flows regulation. In this context in the article the concept of tourism capacity or capacity of the resource base of rural tourism is used. The problem of the definition of tourism pressure on the resource base of rural tourism, particularly in natural landscapes is disclosed. Unlike environmental and recrealogical sciences, which stop at the capacity definition of the resource base of tourism, tourism logistics compares this figure with the existing tourist flows and accordingly determines the safe way of tourism management to ensure its sustainable nature. It was shown that these strategies boil down to two basic types – the further development of tourism in a particular area or limit such activities to conserve the resource base of tourism. Recreational (travel) load is the indicator that reflects the impact of tourism on the resource base of tourism (especially landscape complex), expressed by the number of tourists or tourists-days per area unit or per tourist site for the certain period of time (day, month, season year). There are actual, allowable (the maximum) and destructive (dangerous) types of travel load. The latter can lead recreational area or resource base of rural tourism to destruction. Thus, depending on the intensity of tourism resource base using in rural tourism it may change – according to tourist consumption. Large number of tourists affects the entire range of recreational destinations and their individual components. The most vulnerable part of the environment in this sense is vegetation, except that significant changes may occur with soil, water bodies, air and so on. The geographic dimension of the problem of rural tourism sustainable development includes the concept of zoning, ie the division of the territory, offering to develop rural tourism in several zones with different modes of travel usage – from a total ban (in protected areas) for complete freedom with transitional stages, involving various limit degrees in the development of rural tourism. Marketing approach reflects the application of the curve R. Butler to the stages of development of rural tourism destinations with the release of such steps as: research, involvement, development, consolidation, stagnation (also called “saturation”), revival or decline. Shown the models that link the stage of resource base tourist development (under “Curve Butler”), strength of tourism consumption the magnitude of such effects (eg weak (disperse) impact in large scale, strong (concentrated) impact in large scale, strong (concentrated) impact in small scale, weak (disperse) impact in small scale), dynamics of tourism development at the territory.

scholarly journals Engineering and Economic Perspective in The Production of Cu Nano

2020 ◽  
Vol 8 (1) ◽  
pp. 15
Author(s):  
Annisa Yuliandini ◽  
Asep Bayu Dani Nandiyanto
Keyword(s):  
Economic Evaluation ◽  
Net Present Value ◽  
Copper Acetate ◽  
Tween 80 ◽  
Point Of View ◽  
Industrial Scale ◽  
Sorbitan Monooleate ◽  
Economic Point ◽  
Economic Parameters ◽  
Break Even Point

The purpose of this study is to analyze the production of copper nanoparticles (Cu NPs) on an industrial scale in an engineering perspective and economic evaluation perspective. Energy is needed because of various energy related applications. Evaluation of Cu nanoparticle production in an engineering perspective is carried out from the selection of processes that are adapted to industrial scale, calculation of mass balance, to the adjustment of commercially available equipment. Evaluation of production from an economic point of view is done by calculating economic parameters: Gross Profit Margin, Internal Return Rate, Payback Period, Cumulative Net Present Value, Profitability Index, and Break Even Point. Briefly from the production process, we use Copper acetate hydrate (CuAc2.2H2O) (as a source of Cu), Tween 80 (polyoxyethylene-(80)-sorbitan monooleate) and ethylene glycol (as a reducing agent). The engineering viewpoint shows this process is capable of producing Cu nanoparticles which can be used as conductive nanoionic. Economic evaluation determines the process is beneficial, discussing with positive values ​​all economic parameters. However, for some variations this process is not profitable, so economic evaluation is needed.

scholarly journals Educational guidelines in the process of implementation of rational principles and the value preconditions of the open society

2020 ◽  
Vol 26 (1) ◽  
pp. 84-98
Author(s):  
Аndrii Ivanovich Abdula
Keyword(s):  
Critical Thinking ◽  
State Intervention ◽  
Educational Process ◽  
Educational Goals ◽  
Open Society ◽  
Moral Obligations ◽  
Social Reforms ◽  
Theory Of Justice ◽  
Definition Of ◽  
Education And Development

The theoretical model of the open society was and remains a fruitful way of reflecting the essential links within a democratic society. Analyzing this concept from its rationality, the author tries to highlight its fundamental principles and determine their impact on the form and content of the functioning of education. The article offers a view of K. Popper’s “open society” as a way to implement the principles of criticism (critical methodology), of (potential) fallibility, egalitarianism (pluralism) as principles of social rationality. The connection between these principles, moral obligations, and the humanistic theory of justice is emphasized. Their socio-philosophical and epistemological realization in the context of educational issues is covered. The paper considers problems of state intervention in educational processes, the definition of educational goals, the methodology of social reforms (including educational reforms). The article also outlines the problem of defining the boundaries of regulation of the educational process in the value system of open society. This discussion is interpreted in terms of the theory of rationality as an attempt to avoid the extremes of absolutism (dogmatism) and relativism. Emphasis is placed on the prospects of using the critical-rationalist methodology, in the context of education and development of skills necessary for participation in democratic processes. Particular attention is paid to the problematic aspects of the implementation of the rational principles and values of the open society in the educational environment and in the process of reforming the education system in the absence of a constant critical and rationalist tradition. The paper emphasizes the importance of critical thinking in the prospect of implementing these transformations. The importance of scientific, logical and methodological, psychological and pedagogical aspects of critical thinking is emphasized; the author tries to comprehend the problematic aspects of the implementation of these principles in the process of implementing reforms in the field of education.

scholarly journals From genomes to systems: the path with yeast

2006 ◽  
Vol 361 (1467) ◽  
pp. 477-482 ◽  
Author(s):  
Stephen G Oliver
Keyword(s):  
Eukaryotic Cell ◽  
Metabolic Control Analysis ◽  
Coarse Grained ◽  
Control Analysis ◽  
Individual Gene ◽  
Metabolic Systems ◽  
Genes Encoding ◽  
Balance Analysis ◽  
Definition Of ◽  
The Impact

Metabolic Control Analysis (MCA) is a conceptual and mathematical formalism that models the relative contributions of individual effectors in a pathway to both the flux through the pathway and the concentrations of individual intermediates within it. To exploit MCA in an initial Systems Biology analysis of the eukaryotic cell, two categories of experiments are required. In category 1 experiments, flux is changed and the impact on the levels of the direct and indirect products of gene action is measured. We have measured the impact of changing the flux on the transcriptome, proteome and metabolome of Saccharomyces cerevisiae . In this whole-cell analysis, flux equates to growth rate. In category 2 experiments, the levels of individual gene products are altered, and the impact on the flux is measured. We have used competition analyses between the complete set of heterozygous yeast deletion mutants to reveal genes encoding proteins with high flux control coefficients. These genes may be exploited, in a top-down analysis, to build a coarse-grained model of the eukaryotic cell, as exemplified by yeast. More detailed modelling requires that ‘natural’ biological systems be identified. The combination of flux balance analysis with both genetics and metabolomics in the definition of metabolic systems is discussed.

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