A Novel Structure for Measurement and Instrumentation Courses

2002 ◽  
Author(s):  
L. Ken Lauderbaugh Saunders
Keyword(s):  
Measurement Problem ◽  
Technical Writing ◽  
Experimental System ◽  
Measurement Technology ◽  
Research Support ◽  
Writing Assignments ◽  
New Approach ◽  
Measurement Systems ◽  
Novel Structure ◽  
Interest Level

This paper presents a new approach to the design of undergraduate measurement and instrumentation courses. Measurement and instrumentation courses are typically taught as a combination of lab procedures and measurement technology, with a bit of statistics thrown in. These courses are typically structured as a laboratory supporting a lecture course. A new approach to this course has been developed and implemented. In this new approach, a combination of lectures and independent research support independent laboratory experiments coupled with rigorous technical writing assignments. The new instructional design consists of a series of lectures conducted during the first half of the course. These lectures cover general topics needed for most of the laboratories. Students are given reading/research and homework assignments throughout the course to cover the “technology” of sensors and measurement systems. These lectures and assignments support the conducting of 11 open ended labs and a term project: each requiring an extensive lab report. This new approach is proving to be very effective. The interest level of the students has improved greatly. Instead of simply applying a known sensor to a given problem, the students are now able to identify a measurement problem, determine and research appropriate sensors, design an experimental system, document results and prepare a technical argument. A detailed discussion of this approach is included. Student feedback and anecdotal evidence are also included.

Wavelet Based Method for an Analysis of Jitter in Telecommunication Signals

2003 ◽  
Vol 01 (03) ◽  
pp. 307-323
Author(s):  
Jan Borgosz ◽  
Bogusław Cyganek
Keyword(s):  
Pattern Recognition ◽  
Measurement Problem ◽  
Wavelet Base ◽  
New Approach ◽  
Measurement Systems ◽  
Telecommunication Systems ◽  
Jitter Measurement ◽  
Base Functions ◽  
Measurement Algorithm ◽  
Reference Clock

This article describes a new method of the measure and analysis of the jitter phenomenon. Presented analysis is focused on the case of the telecommunication systems, but can be easily extended to other systems. This research is a continuation of the earlier work on the phase noise and jitter measurement systems. Method shown in this paper does not require generation of the reference clock in contrast to classic methods. It is rather based on the combination of the wavelet analysis and relational pattern recognition. This new approach to the jitter measurement problem gives very interesting results which are worth for further exploration. Authors give not only proposal but show measurement algorithm, which allows to estimate the jitter parameters by measure relation between the jitter wavelet base functions. In the background comparison of a classic and wavelet approaches to the jitter measurement problem is presented. In addition, such topics like the wavelet type, its order, as well as calibrating methods are also discussed.

scholarly journals A New Approach to Quantifying Bioaccumulation of Elements in Biological Processes

Biology ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 345
Author(s):  
Kinga Proc ◽  
Piotr Bulak ◽  
Monika Kaczor ◽  
Andrzej Bieganowski
Keyword(s):  
Element Concentration ◽  
Experimental System ◽  
Small Scale ◽  
New Approach ◽  
Realistic Situation ◽  
Initial Load ◽  
Test Elements ◽  
Organism Growth ◽  
Bioaccumulation Index ◽  
Phosphorous Concentration

Bioaccumulation, expressed as the bioaccumulation factor (BAF), is a phenomenon widely investigated in the natural environment and at laboratory scale. However, the BAF is more suitable for ecological studies, while in small-scale experiments it has limitations, which are discussed in this article. We propose a new indicator, the bioaccumulation index (BAI). The BAI takes into account the initial load of test elements, which are added to the experimental system together with the biomass of the organism. This offers the opportunity to explore the phenomena related to the bioaccumulation and, contrary to the BAF, can also reveal the dilution of element concentration in the organism. The BAF can overestimate bioaccumulation, and in an extremal situation, when the dilution of element concentration during organism growth occurs, the BAF may produce completely opposite results to the BAI. In one of the examples presented in this work (Tschirner and Simon, 2015), the concentration of phosphorous in fly larvae was lower after the experiment than in the younger larvae before the experiment. Because the phosphorous concentration in the feed was low, the BAF indicated a high bioaccumulation of this element (BAF = 14.85). In contrast, the BAI showed element dilution, which is a more realistic situation (BAI = −0.32). By taking more data into account, the BAI seems to be more valid in determining bioaccumulation, especially in the context of entomoremediation research.

scholarly journals Adaptive Stochastic Filtration Based on the Estimation of the Covariance Matrix of Measurement Noises Using Irregular Accurate Observations

Inventions ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 10
Author(s):  
Sergey Sokolov ◽  
Arthur Novikov ◽  
Marianna Polyakova
Keyword(s):  
Covariance Matrix ◽  
Adaptive Estimation ◽  
Observation System ◽  
Mobile Object ◽  
New Approach ◽  
Measurement Systems ◽  
System Parameters ◽  
Traditional Scheme ◽  
Adaptive Filtration ◽  
Measurement Noises

In measurement systems operating under various disturbances the probabilistic characteristics of measurement noises are usually known approximately. To improve the observation accuracy, a new approach to the Kalman’s filter adaptation is proposed. In this approach, the Covariance Matrix of Measurement Noises (CMMN) is estimated by accurate measurements detected irregularly by the mobile object observation system (from radiofrequency identifiers, etalon reference, fixed points etc.). The problem of adaptive estimation of the observer’s noises covariance matrix in the Kalman filter is solved analytically for two cases: mutual noises correlation, and its absence. The numerical example for adaptive filtration of complexing navigation system parameters of a mobile object using irregular accurate measurements is given to illustrate the effectiveness of the proposed algorithm. Coordinate estimating errors have changed in comparison with the traditional scheme from 100 m to 2 m in latitude, and from 200 m to 1.5 m in longitude.

Numerical and Experimental Investigations on SGMF of GH3044 Superalloy Tube

2014 ◽  
Vol 915-916 ◽  
pp. 668-672 ◽  
Author(s):  
Li Jun Wu ◽  
Chang Cai Zhao ◽  
Guo Jiang Dong
Keyword(s):  
Experimental System ◽  
Elongation Rate ◽  
High Yield ◽  
Experimental Investigations ◽  
High Yield Strength ◽  
New Approach ◽  
Nickel Based Superalloy ◽  
User Subroutine ◽  
Granules Medium ◽  
Abaqus Software

According to the GH3044 nickel-based superalloy with high yield strength, a new approach for superalloy tube named Tube Solid Granules Medium Forming (SGMF) was present, and tube SGMF process principle and the mechanical model of solid granules were designed. The superalloy tube SGMF process was investigated numerically by using User subroutine of Abaqus software, the deforming simulations of two groups of tube products were performed separately, and the elongation rate and thickness distributions of the products were analyzed. An experimental system was designed and developed for tube SGMF, typical GH3044 superalloy tubes were deformed, good correlation was observed between the simulation results and experimental data.

scholarly journals Video tutorials as academic writing and research support for students of International Business

2020 ◽  
Vol 10 (1) ◽  
pp. 25-42
Author(s):  
Larssyn Staley ◽  
Susan Göldi ◽  
Anna Nikoulina
Keyword(s):  
International Business ◽  
Academic Writing ◽  
Learning Process ◽  
Research Support ◽  
Writing Assignments ◽  
Positive Effects ◽  
Video Tutorial ◽  
Video Tutorials ◽  
Student Questionnaire ◽  
Multimedia In Education

Many studies have made claims for the positive effects of multimedia in education; however, there is a lack of systematic and comparable research, especially when it comes to video tutorials. This study evaluates the use and benefits of short screencast video tutorials, produced with Camtasia and published on YouTube, in preparing students for research-based writing assignments. The study employs a multi-method research design, comprising an analysis of video-tutorial viewership data from YouTube and a student questionnaire on the perceived benefits of these video tutorials. The data on how the tutorials are used, as well as the questionnaire responses, enable us to highlight which aspects of these tutorials positively affect the learning process, and importantly, how such tutorials should be adapted to be more useful. Findings indicate that the use of such tutorials is more dependent on the type of information included (e.g., theory, instructions or examples), than their length (within the range of three to six minutes). Additionally, novice, introductory-level students appear to have received greater benefit from the tutorials than students with some previous academic writing experience.

Models and the Teaching of Technical Writing

1989 ◽  
Vol 19 (1) ◽  
pp. 69-81 ◽  
Author(s):  
Warren W. Werner
Keyword(s):  
Technical Writing ◽  
Writing Assignments ◽  
Linguistic Experience ◽  
Writing Students

Technical writing students often misuse models given them for their writing assignments because they fail to distinguish between model and example and between different kinds of models. The results of this misuse are texts that contain inappropriate material and are unfit for their intended audiences. The approach to writing taken by these students is too narrow and rigid. This article details the problem and defines the models used in writing as partially abstract, analogous representations of social codifications of linguistic experience. Since models are social artifacts shared by both writers and readers, a clearer understanding of them should help writers produce texts appropriate for their audiences while giving the writers greater rhetorical flexibility.

scholarly journals (139) Enhancing Professional Development of Graduate Students through a Scientific Writing Course

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1043B-1043
Author(s):  
Kent D. Kobayashi
Keyword(s):  
Professional Development ◽  
Graduate Students ◽  
Graduate Program ◽  
Technical Writing ◽  
Learning Experience ◽  
Scientific Paper ◽  
Scientific Writing ◽  
Student Survey ◽  
Master's Students ◽  
Writing Assignments

How do we enhance the learning experience of graduate students in scientific writing, an essential skill in their professional development? A graduate course TPSS 711 “Scientific Writing for Graduate Students” was developed to address this need. Its objectives were to help students write, analyze, and revise parts of a scientific paper; critically evaluate their own writing and the writings of others; and become familiar with types of publications. The diverse topics included purpose of scientific writing; organizing your writing; parts of a scientific paper; data analysis and growth analysis; writing the content of a poster or oral presentation; newspaper articles and popular works; extension publications; technical writing for the general public; thesis/dissertation writing; a journal editor's perspective; and reviewing a manuscript. TPSS 711 had an enrollment of 11 TPSS master's students. Students were in their second through fifth semesters of their graduate program. A student survey showed no student had submitted a manuscript to a peer-reviewed journal, had a peer-reviewed article published, or had a newspaper, trade magazine, or popular work published. Only 9% of the students had a paper published in a conference proceedings or presented a scientific paper outside Hawaii, with only 18% having presented a paper in Hawaii. Writing assignments, in-class activities, and evaluations of the writings of others helped students gain intensive hands-on experience in scientific writing. As a course requirement, students submitted an abstract and presented a paper at our college's annual scientific symposium. Course evaluations indicated this course was important and valuable in helping enhance the students' learning experience.

scholarly journals A New Approach to the Formant Measuring Problem

Proceedings ◽  
2019 ◽  
Vol 33 (1) ◽  
pp. 29 ◽  
Author(s):  
Marnix Van Soom ◽  
Bart de Boer
Keyword(s):  
Steady State ◽  
Speech Production ◽  
Spectrum Analysis ◽  
Vocal Tract ◽  
Measurement Problem ◽  
Primary Concern ◽  
New Approach ◽  
Formant Frequencies ◽  
Frequency Components ◽  
Error Bars

Formants are characteristic frequency components in human speech that are caused by resonances in the vocal tract during speech production. They are of primary concern in acoustic phonetics and speech recognition. Despite this, making accurate measurements of the formants, which we dub “the formant measurement problem” for convenience, is as yet not considered to be fully resolved. One particular shortcoming is the lack of error bars on the formant frequencies’ estimates. As a first step towards remedying this, we propose a new approach for the formant measuring problem in the particular case of steady-state vowels—a case which occurs quite abundantly in natural speech. The approach is to look at the formant measuring problem from the viewpoint of Bayesian spectrum analysis. We develop a pitch-synchronous linear model for steady-state vowels and apply it to the open-mid front unrounded vowel [ɛ] observed in a real speech utterance.

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