Hydrostatic Conceptual Change Test (HCCT) is a diagnostic test instrument to identify students' conception on Hydrostatic field. It is very important to support the learning process in the classroom. Based on that...
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Hydrostatic Conceptual Change Test (HCCT) is a diagnostic test instrument to identify students' conception on Hydrostatic field. It is very important to support the learning process in the classroom. Based on that point of view, the researcher decided to develop HCCT instrument test into four-tier test diagnostic items. The resolve of this research is planned as the first step of four-tier test-formatted HCCT development as one of investigative test instrument on Hydrostatic. The research method used the 4D model which has four comprehensive steps: 1) defining, 2) designing, 3) developing and 4) disseminating The instrument developed has been tried to 30 students in one of senior high schools. The data showed that four-tier- test-formatted HCCT is able to identify student's conception level of Hydrostatic. In conclusion, the development of four-tier test-formatted HCCT is one of potential diagnostic test instrument that able to classify the category of students who misconception, no understanding, understanding, partial understanding and no codeable about concept of Hydrostatic.
Viscous liquid-gas two-phase flow experiments with liquid viscosity ranging from 1000 - 5000 cP (1.0 - 5.0 Pa.s) and air as the gas phase were compared with the point model simulations obtained from OLGA, a multiphase...
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Brazil is one of the countries with the highest level of drug consumption in the world. By 2012 about 66% claimed to practice self-medication. Such activity can lead to a wide range of risks, including death from drug...
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ISBN:
(纸本)9789897583728
Brazil is one of the countries with the highest level of drug consumption in the world. By 2012 about 66% claimed to practice self-medication. Such activity can lead to a wide range of risks, including death from drug intoxication. Studies indicate that a lack of knowledge about drugs and their dangers is one of the main aggravating factors in this scenario. This work aims to universalize access to information about medications and their risks for different user profiles, especially Brazilian and lay users. In this paper, we presented the construction process of a Linked Data Mashup (LDM) integrating the datasets: consumer drug prices, government drug prices and drug's risks in pregnant from ANVISA and SIDER from BIO2RDF. In addition, this work presents MediBot, an ontology-based chatbot capable of responding to requests in natural language in Portuguese through the instant messenger Telegram, smoothing the process to query the data. MediBot acts like a native language query interface on an LDM that works as an abstraction layer that provides an integrated view of multiple heterogeneous data sources.
In this paper near-field coupling in UHF-RFID systems is investigated. The wireless power transfer among reader and tag antennas is addressed through a numerical model involving different reader antennas and a short-r...
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ISBN:
(纸本)9781467349390;9784885522765
In this paper near-field coupling in UHF-RFID systems is investigated. The wireless power transfer among reader and tag antennas is addressed through a numerical model involving different reader antennas and a short-range tag. System performance is investigated in terms of both mutual impedance and power transfer efficiency. Finally, a new near-field reader antenna based on coplanar waveguide technology will be described.
The flight mechanics of dynamic soaring are described to explain how the albatross can sustain soaring flight over a waveless sea in any net direction, including upwind, by extracting energy from the wind velocity gra...
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The study site is selected in a Malaysian tropical rainforest area, which consists of a mixture of plain, hilly and mountainous terrain. Digital Elevation Model (DEM) images were generated from nine RADARSAT-1 imageri...
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ISBN:
(纸本)9780819465283
The study site is selected in a Malaysian tropical rainforest area, which consists of a mixture of plain, hilly and mountainous terrain. Digital Elevation Model (DEM) images were generated from nine RADARSAT-1 imageries (F, S and W beam modes) which make up six stereo pair combinations. The DEM accuracies for all the stereo combinations have been validated and compared to each other. The results show that numerous factors affect the final DEM accuracy. In flat areas, the final DEM accuracy is highly correlated to the stereo intersection geometry of the different image combinations. The higher the stereo intersection angle of the same beam mode, the better the accuracy of the final DEM.
A set of language features that can be added to Ada that associate exceptions with the operations of a data type and exception handlers with data objects are presented. The notation is called data-oriented exception e...
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A set of language features that can be added to Ada that associate exceptions with the operations of a data type and exception handlers with data objects are presented. The notation is called data-oriented exception exception handling to distinguish it from more conventional, control-oriented mechanisms. The implementation of a preprocessor from the notation to Ada is described. Empirical studies indicate that control-oriented exception handling mechanisms are more complex than necessary for the tasks they perform, and that data-oriented exception handling can be used to produce programs that are smaller, better structured, and easier to understand and modify.< >
This paper proposes a two-stage configuration of AC/DC converter employing load-adaptive link-voltage-adjusting technique with load power estimator. The proposed technique helps to maintain high efficiency over all th...
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ISBN:
(纸本)9781424428922
This paper proposes a two-stage configuration of AC/DC converter employing load-adaptive link-voltage-adjusting technique with load power estimator. The proposed technique helps to maintain high efficiency over all the load condition despite the output voltage varies according to the load power. In addition, since the proposed circuit uses low-loss load power estimator to adjust the output voltage, it can achieve high power density more than 14W/in(3). Experimental results with 80W notebook computer adaptor are provided to verify the validity of the proposed converter.
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