scholarly journals Demonstrative experiment study on the consistency of two-slit interference and diffraction phenomenon

2015 ◽  
Author(s):  
Jie Zhao ◽  
Dayong Wang ◽  
Yunxin Wang ◽  
Lu Rong ◽  
Zhuqing Jiang ◽  
...  
Keyword(s):  
Experiment Study ◽  
Diffraction Phenomenon

Some Applications of the U. S. Steel MVEM

1973 ◽  
Vol 31 ◽  
pp. 4-5
Author(s):  
J. S. Lally ◽  
L. E. Thomas ◽  
R. M. Fisher
Keyword(s):  
Electron Diffraction ◽  
Debye Temperature ◽  
Metals And Alloys ◽  
Critical Voltage ◽  
Dynamical Diffraction ◽  
Phase Structures ◽  
Structure Factors ◽  
Local Bonding ◽  
Diffraction Phenomenon ◽  
Multi Phase

A variety of materials containing many different microstructures have been examined with the USS MVEM. Three topics have been selected to illustrate some of the more recent studies of diffraction phenomena and defect, grain and multi-phase structures of metals and minerals.(1) Critical Voltage Effects in Metals and Alloys - This many-beam dynamical diffraction phenomenon, in which some Bragg resonances vanish at certain accelerating voltages, Vc, depends sensitively on the spacing of diffracting planes, Debye temperature θD and structure factors. Vc values can be measured to ± 0.5% in the HVEM ana used to obtain improved extinction distances and θD values appropriate to electron diffraction, as well as to probe local bonding effects and composition variations in alloys.

Withdrawal: Experiment study of bleed air contaminant transport in aircraft cabin

2018 ◽  
Author(s):  
Xiyuan Chen ◽  
Zhenbin Wang ◽  
Bowen Ma ◽  
Shibin Yang ◽  
Xiaozhe Sun
Keyword(s):  
Contaminant Transport ◽  
Experiment Study ◽  
Aircraft Cabin ◽  
Air Contaminant

Experiment Study Of Light Transmitting Concrete

2016 ◽  
pp. 1
Author(s):  
Abdelmajeed Altlomate ◽  
Mohamed Jadan ◽  
Faesal Alatshan ◽  
Fidelis Mashiri
Keyword(s):  
Experiment Study

Practical Work or Simulations? Voices of Millennial Digital Natives

2021 ◽  
pp. 004723952110189
Author(s):  
Promail K.Y. Leung ◽  
Maurice M.W. Cheng
Keyword(s):  
Virtual World ◽  
Electronic Devices ◽  
Digital Natives ◽  
Practical Work ◽  
Group Interview ◽  
Experiment Study ◽  
Electric Circuits ◽  
Online Simulations ◽  
Validated Instrument ◽  
Quasi Experiment Study

Students nowadays grow up with electronic devices and are adept at navigating the virtual world. Practical activities may be more of a novelty for them than simulations. Using the topic of electric circuits as a context, we examined the ways in which Grade 11 students perceived and learned from practical work and simulations, respectively. In this quasi-experiment study, a group of 19 students used a free online simulations package “Circuit Construction Kit,” while another group of 17 students learnt through practical work. We administered a validated instrument to both groups and found that practical work and simulations supported students’ learning in similar ways. The interventions were then reversed so that all participants experienced both practical work and simulations. Finally, seven students from each group were selected for a group interview. Through the interviews, we identified features of simulations and practical work respectively that students believed contributed to their learning.

scholarly journals Stated Preferences for Plant-Based and Cultured Meat: A Choice Experiment Study of Spanish Consumers

2021 ◽  
Vol 13 (15) ◽  
pp. 8235
Author(s):  
Alfredo J. Escribano ◽  
Maria Belen Peña ◽  
Carlos Díaz-Caro ◽  
Ahmed Elghannam ◽  
Eva Crespo-Cebada ◽  
...  
Keyword(s):  
Choice Experiment ◽  
Meat Products ◽  
Meat Production ◽  
Experiment Study ◽  
Negative Effects ◽  
High Quality ◽  
Cultured Meat ◽  
Production And Consumption ◽  
Alternative Sources ◽  
Negative Impacts

Meat production and consumption have been claimed to have negative impacts on the environment, and even on the consumer’s health. In this sense, alternative sources of protein, mainly meat substitutes and cultured meat, have emerged due to those perceived negative effects. Our paper carries out a choice experiment to analyze the preferences of 444 Spanish consumers and their willingness to pay for plant-based and cultured meats, as compared to conventional meat. Spain was considered of interest for this study due to its significant gastronomic culture, with high-quality meat products that make a great contribution to the economy, meaning that this could be a suitable and also challenging market in which to test alternative sources of protein. The findings show that consumers’ motivations and their interactions with these products are complex. Additionally, a cluster analysis allowed us to identify three types of consumers in terms of preference for these products: price-sensitive millennials, conscious/concerned consumers, and indifferent consumers. Only one group showed some level of acceptance of these alternative products meats.

scholarly journals How Do Patients Want Us to Use the Computer During Medical Encounters?—A Discrete Choice Experiment Study

2021 ◽  
Author(s):  
Cédric Lanier ◽  
Melissa Dominicé Dao ◽  
Dave Baer ◽  
Dagmar M. Haller ◽  
Johanna Sommer ◽  
...  
Keyword(s):  
Discrete Choice Experiment ◽  
Discrete Choice ◽  
Choice Experiment ◽  
Primary Care Physicians ◽  
Skills Training ◽  
Experiment Study ◽  
Visual Contact ◽  
Patient Centered ◽  
Clinical Communication ◽  
French Speaking

Abstract Background Primary care physicians (PCPs) now widely use electronic health records (EHRs) during medical encounters. Experts in clinical communication issued recommendations for a patient-centered use of EHRs. However, they have never been validated by patients themselves. Objective To explore patients’ preferences regarding physicians’ EHR-related behaviors. Design Discrete choice experiment study. Patients French-speaking patients waiting for a medical consultation at two outpatient clinics in Geneva, Switzerland. Main Measures We invited patients to watch videos displaying 2 or 3 variations of four specific EHR-related behaviors and asked them to indicate which one they preferred. EHR-related behaviors were (1) typing: continuous/intermittent/handwriting in biomedical or psychosocial focused consultations; (2) maintaining contact while typing: visual/verbal/both; (3) signposting the use of EHR: with/without; (4) position of physicians’ hands and bust: on the keyboard and towards the patient/away from the keyboard and towards the patient/on the keyboard and towards the screen. Key Results Three hundred thirty-six patients participated (response rate 61.4%). They preferred intermittent typing versus handwriting or continuous typing for biomedical issues (32.7%; 95% CI: 26.0–40.2% vs 31.6%; 95% CI: 24.9–39.0% or 14.9%; 95% CI: 10.2–21.1%) and psychosocial issues (38.7%; 95% CI: 31.6–46.3% vs 24.4% 95% CI: 18.4–31.5% or 17.9%; 95% CI; 12.7–24.4%). They favored visual and verbal contact (38.9%; 95% CI: 31.9–46.3%) over verbal (30.3%; 95% CI: 23.9–37.5%) or visual contact only (11.4%; 95% CI: 7.5–17.1%) while the doctor was typing. A majority preferred signposting the use of EHR versus no signposting (58.9%; 95% CI: 53.5–64.0% vs 34.8%; 95% CI: 29.9–40.1%). Finally, half of the patients (49.7%; 95% CI: 42.0–57.4%) favored the position with the physician’s bust towards the patient and hands away from the keyboard. Conclusions Our study shows that patients’ preferences regarding EHR-related behaviors are in line with most experts’ recommendations. Such recommendations should be more consistently integrated into under- and postgraduate communication skills training.

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