Spurious free thickness shear bulk acoustic resonators on lithium niobate using standard and broadband piston mode designs

This paper describes design and fabrication of sprious-free thickness shear bulk acoustic resonators (TSBARs) using the lithium niobate (LN) plate. Previously, the authors conjected from the experiment on the TSBAR that cutoff edges with crystal LN X-plane serve as ideal reflectors for the piston mode operation, and complete suppression is possible by adding the standard piston mode design to the other edges normal to the X-axis. Following to this conjecture, the traditional piston mode structure is designed by the traditional two-dimensional finite element method, and the TSBAR is fabricated following to the design. The experiment showed complete suppression of the transverse mode resonances, and the conjecture was verified.

Building Researchers' Capacity for Embracing the Engagement of Older Adults in Research

The Sage Resource Project aimed to broaden the pool of researchers who include the voice of older adults using long-term services and supports (LTSS) in research processes. We developed training to build researcher capacity to engage older adults through the development of Sage Model research advisory boards. Methods included training strategies for learning mode, design, duration, and emphasis of content that were informed by results of a researcher needs assessment and input from 2 older adult research advisory boards. Over 100 researchers registered for a 4-webinar series. All respondents to webinar evaluations (22) reported learning about topics that aligned with webinar objectives and had interest in engaging older adult stakeholders and/or developing an older adult research advisory board in the future. Representatives from five universities expressed interest attending online interactive workshops to build advisory boards. Lessons learned identify directions for research on best practices for developing older adult advisory groups.

Smíšený mód a online dotazování: mezinárodní praxe a tuzemská připravenost na implementaci

The cost of interviewer-administered data collection (CAPI, CATI) has been gradually rising, while response rates have been declining over time. This situation has led to the domination of online data collection (CAWI), which tends to suffer from poor population coverage and even lower response rates. This could be overcome by combining this method with another mode of data collection. This paper aims to summarise the main principles of mixed-mode design, its implementation in major international surveys, and the first results of a project testing the feasibility of the push-to-web mixed-mode design in the Czech context. The results illustrate that together, unequal distribution of technological skills and willingness to participate distort the recruitment of random samples for CAWI towards middle-aged and more educated respondents. The mixed-mode design – together with the described components – has the potential to better involve underrepresented groups, while it is essential to follow the rules for achieving comparable answers across modes and devices. Finally, we emphasize the need to disseminate findings to researchers and other users of survey data, as the use of mixed-mode design has been rapidly increasing.

The Emoji Linguistic Functions on Facebook Interactions among Undergraduate Students at Jadara University in Jordan

This study has made use of a mixed mode design where two instruments are employed namely a corpus based tool and a questionnaire. For three months, the researchers have observed Raseef Jadara Facebook website in order to explore the use of emoji in posts and comments. The results showed that five functions were emerged from the data collected, emotive, conative, phatic, poetic, referential and metalingual. Descriptive statistics were used in conducting a questionnaire in order to show the differences between male and female students in using emoji. The results showed that females prefer using emoji in their chatting or messaging. The researchers suggest further studies to be carried out on the language functions of emoji in other social media platforms Furthermore. It is recommended for other studies to be directed into investigating all language functions.

Design and performance of the flash satellite “Ladybeetle-1”

The first satellite which can flash Morse code on orbit is introduced in this paper. The design of the system includes light energy estimation, attitude mode design, elevation angle analysis and flash time design. It is a 100 kg satellite with two LED arrays on 547 km. When it flashes, the satellite points to the observation location. The LED rays flash as the rule of Morse code. The satellite was sent to the orbit in Dec 2018 and the test of flash was completed within one month after then. The photo taken by star sensor can compare the apparent magnitude by the gray level. The results of the analysis show that the satellite can achieve 0 apparent magnitude, which is consistent with the design of the system. As a meaningful scientific experiment, “Ladybeetle-1” links space technology with popular science education and also provides a reference for space applications.