Design of General Test System for Optoelectronic Equipment Based on Computer

In recent years, with the popularization of optoelectronic equipment in various industries, various reconnaissance equipment and test equipment have also appeared. Traditional test technology and system functions can no longer meet the development of optoelectronic equipment, so it is imperative to introduce general test ideas and establish a general test system.

Chi-square test under indeterminacy: an application using pulse count data

Background The data obtained from the counting process is known as the count data. In practice, the counting can be done at the same time or the time of the count is not the same. To test either the K counts are differed significantly or not, the Chi-square test for K counts is applied. Results The paper presents the Chi-square tests for K counts under neutrosophic statistics. The test statistic of the proposed test when K counts are recorded at the same time and different time are proposed. The testing procedure of the proposed test is explained with the help of pulse count data. Conclusions From the analysis of pulse count data, it can be concluded that the proposed test suggests the cardiologists use different treatment methods on patients. In addition, the proposed test gives more information than the traditional test under uncertainty.

Equivalence Testing for Multiple Regression

Psychological research is rife with inappropriately concluding lack of association or no effect between a predictor and the outcome in regression models following statistically nonsignificant results. This approach is methodologically flawed, however, because failing to reject the null hypothesis using traditional, difference-based tests does not mean the null is true (i.e., no relationship). This flawed methodology leads to high rates of incorrect conclusions that flood the literature. This thesis introduces a novel, methodologically sound alternative. I demonstrate how equivalence testing can be applied to evaluate whether a predictor has negligible effects on the outcome variable in multiple regression. I constructed a simulation study to evaluate the performance (i.e., power and error rates) of two equivalence-based tests and compared it to the common, but inappropriate, method of concluding no effect by failing to reject the null hypothesis of the traditional test. I further propose two R functions to accompany this thesis and supply researchers with open-access and easy-to-use tools that they can flexibly adopt in their own research. The use of the proposed equivalence-based methods and R functions is then illustrated using examples from the literature, and recommendations for results reporting and interpretations are discussed. My results demonstrate that using tests of equivalence instead of the traditional test is the appropriate statistical choice: Tests of equivalence show high rates of correct conclusions, especially with larger sample sizes, and low rates of incorrect conclusions, whereas the traditional method demonstrates unacceptably high incorrect conclusion rates.

Uniform Quantization of Signals with Clipped and Truncated Laplace Distributions

Many natural and man-made signals including much of speech and music are well-modeled by the Laplace distribution. Methods of synthesizing such signals are available and sometimes preferred over traditional test signals. However, sometimes those Laplace-like signals are clipped or do not exhibit infinitely-long tails. These situations are analyzed to determine their variances with an application of estimating signal-to-noise ratio as they are quantized by an analog-to-digital converter.

Quizizz Website as an Online Assessment for English Teaching and Learning: Students’ Perspectives

This paper aimed to investigate the students’ perspectives toward the use of Quizizz as an online assessment tool for English teaching and learning, especially on a formative one. The research design of this study was descriptive qualitative. The subjects of the study were 20 students of Dynamic English Course. The data was collected by asking the students to fill the questionnaire. The data analysis was implementing the Likert Scale. The result of the study showed positive perspectives of the students toward the use of Quizizz. In conclusion, the students strongly agreed that Quizizz has an attractive display which is interesting and fun, students can’t cheat during the test, Quizizz creates a competitive atmosphere in the classroom, and Quizizz is better than the offline traditional test.

A Theory of Conditional Assertion

According to one tradition, uttering an indicative conditional involves performing a special sort of speech act: a conditional assertion. We introduce a formal framework that models this speech act. Using this framework, we show that any theory of conditional assertion validates several inferences in the logic of conditionals, including the False Antecedent inference (that not A implies if A, then C). Next, we determine the space of truth-conditional semantics for conditionals consistent with conditional assertion. The truth value of any such conditional is settled whenever the antecedent is false, and whenever the antecedent is true and the consequent is false. Then, we consider the space of dynamic meanings consistent with the theory of conditional assertion. We develop a new family of dynamic conditional-assertion operators that combine a traditional test operator with an update operation.

Testing Rheological Properties of Alkali-Activated Cement Using Non-Traditional Test Methods

In this paper, the rheological parameters of alkaline activated cement (AAC) paste tailored for continuous extrusion using the non-traditional test method of the direct shear box test are presented. Characteristic changes of the material’s rheological behaviour are estimated in response to variations in the water-to-solid ratio and addition of a cellulosic rheology aid. The results indicate that the increase of the water-to-solid ratio from 0.18 to 0.19 does not impact the internal angle of friction (φ) but does, however, reduce the shear yield strength, or cohesion (c), by 85%. For mixes containing cellulosic rheology aid, the internal angle of friction shows no significant change also. However, the shear yield strength for the mix with a water-to-solid ratio of 0.18 is 51% higher. The shear yield strength increases by a further 28% for the mix with a water-to-solid ratio of 0.19. These results indicate that the cellulosic rheology aid does not necessarily increase the "flow-like" characteristics of the mix which provides it plasticity and the ability to move through the extruder. It does however significantly improve its ‘green strength’, even at an increased water-to-solid ratio of 0.19, which would ultimately assist with lowering the binder density.