1,720,970 research outputs found
Detection and location of defects in electronic devices by means of scanning ultrasonic microscopy and the wavelet trasform
No full textNo.
A Cross-Layer Measurement Approach to Assess LoRa Wireless Technology in Presence of Noise
No full textThe Internet of Things (IoT) paradigm refers to the extension of the internet network to the world of physical objects ('things'), embedded with sensors, actuators, and other technologies that allow them to evolve and become smarter and connected ('smart things') [1]. The physical objects can be anything. The smart objects can sense, monitor, react to the environment, and communicate autonomously the information they process and collect to other smart things or cloud services. A set of smart things can interact together to realize amazing smart applications that improve users' experience, quality of life, and safety [2]. The easiest service provided by IoT is the ability to remotely control and monitor the physical environment over the internet network. As an example, thanks to IoT it is possible today to easily monitor heart rate, manage home lighting, check the availability of parking and much else besides [3]. IoT applications are rapidly changing environments and ecosystems, giving rise to smart cities, smart grids, smart industry, smart communities, etc. The opportunities offered by IoT are endless, since IoT can make everything smart (Internet of Everything-IoE) [4]
Detection and location of defects in electronic devices by means of scanning ultrasonic microscopy and the wavelet trasform
No full textNo.
Reliability measurements of an augmented reality-based 4.0 system for supporting workmen in handmade assembly
No full textThe 4.0 paradigm has diffused across many sectors in a number of technological application fields, from industry to healthcare and constructions, and also to immaterial contexts, such as social events. The relevant enabling technologies of this paradigm are declined to adhere to the requirements of the specific field. Because 4.0 is often associated with technological advancement, in the literature, little attention has been dedicated to the adoption of 4.0 technologies in sectors that are not 'intrinsically technological'. Starting from these considerations, the goal of this work is to address the possibility of extending the 4.0 Era paradigm also to fields that, by definition, are not technology-oriented, such as the craft sector. In particular, as a case study, the adoption of augmented reality (AR) to administer instructions to a workman in the manual assembly of a product is addressed. In line with the 4.0 paradigm, a dedicated workman-centered, AR application was designed, implemented and tested. As a case study, the manual assembly of a mechanical clock was considered. After describing the design strategies and the implementation modalities, experimental tests were carried out to measure the reliability of the AR-based system
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Localization of defects in die attach assembly by continuous wavelet transform using scanning acoustic microscopy
No full textFundamentals of Measurement: The IEEE Std. 1658-2023 for Terminology and Test Methods of Digital-to-Analog Converters
No full textDigital-to-Analog Converters (DACs) represent the gateway between the digital domain and the real world. As the name suggests, a DAC is an electronic component that converts digital data, typically binary code, into an analog signal. This conversion is essential because, while digital data is prevalent in computing and digital communication, many real-world applications and devices operate in the analog domain [1]
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