Results 51 to 60 of about 3,983 (207)

Low‐ and High‐Frequency Noise in LEDs

open access: yesphysica status solidi (a), EarlyView.
The results of optical noise measurements for commercially available blue light‐emitting diodes in a range from kHz to MHz are reported. The noise spectra decomposition into components according to the theoretical model is performed. The coincidence of the experimental results with 1/fγ model for the low‐frequency range is proved and a fitting is made.
Danylo Bohomolov   +2 more
wiley   +1 more source

Exact Time: the First Scientific Application of Radiocommunications

open access: yesSubstantia, 2018
Marconi’s first experiment of signal transmission by means of Hertzian waves was carried out in 1895. In the following years, wireless telegraphy progressed steadily and worldwide efforts were made to exploit the potential offered by new technologies. In
Mario Calamia, Monica Gherardelli
doaj   +1 more source

Multidimensional Evaluation in Primary Progressive Aphasia: Cognitive, Language, Swallowing, Quality of Life, Independence Status, and Depression

open access: yesSensory Neuroscience, EarlyView.
ABSTRACT Given the heterogeneity of primary progressive aphasia (PPA), this study aims to illustrate its varying clinical presentations by examining the disease course and specific symptoms of an individual patient, alongside the results of a comprehensive multidimensional assessment.
Ebru Tetik   +2 more
wiley   +1 more source

Wireless Telegraphy [PDF]

open access: yesScientific American, 1907
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openaire   +1 more source

Wireless Telegraphy at the German Universal Exhibition in Ústí nad Labem in 1903 [1]

open access: yesActa Polytechnica, 2008
This paper focuses on the transmission of wireless telegraphy between Ústí nad Labem and Teplice during the German Universal Exhibition in Ústí nad Labem in 1903.
T. Okurka
doaj  

Connecting the New World. Nets, mobility and progress in the Age of Alexander von Humboldt

open access: yesHiN - Alexander von Humboldt im Netz. Internationale Zeitschrift für Humboldt-Studien, 2012
Zusammenfassung Dieser Artikel untersucht das Verhältnis zwischen den revolutionären technologischen Neuerungen des 19. Jahrhunderts und dem Leben und Wirken Alexander von Humboldts (1769-1859).
Moritz von Brescius
doaj   +1 more source

Resource reallocation across successive systemic innovations: How Rolls‐Royce shaped the evolution of the turbojet, turboprop, and turbofan

open access: yesStrategic Management Journal, EarlyView.
Abstract Research Summary Despite the importance of resource reallocation in shaping a variety of strategic outcomes, strategy scholars have paid only limited attention to the processes by which firms reallocate their resources across successive systemic innovations.
Gino Cattani   +2 more
wiley   +1 more source

Investors' attention and the paradox of technologically related diversification: Evidence of stock market mispricing

open access: yesStrategic Management Journal, EarlyView.
Abstract Research Summary We show that multi‐business firms pursuing technologically related diversification often face a paradox. While such strategies can yield superior financial performance through technological synergies, investors with limited attention tend to undervalue them due to their complexity.
Raffaele Morandi Stagni, Juan Santaló
wiley   +1 more source

Skills and Competencies Needed to Use the Smart Technologies for Industry 4.0

open access: yesSystems Research and Behavioral Science, EarlyView.
ABSTRACT The European Parliament has declared 2023 as the European Year of Skills, which will give new impetus to lifelong learning. In this way, both citizens and economic entities will contribute to the green and digital transition, supporting innovation, creativity and competitiveness, in a world governed by the impulse of artificial intelligence ...
Raluca‐Florentina Crețu   +5 more
wiley   +1 more source

Erving Goffman at 100: A Chameleon Seen as a Rorschach Test within a Kaleidoscope

open access: yesSymbolic Interaction, EarlyView.
The 100th anniversary of Erving Goffman's birth was in 2022. Drawing on his work, the Goffman archives, the secondary literature, and personal experiences with him and those in his university of Chicago cohort, I reflect on some implications of his work and life, and the inseparable issues of understanding society.
Gary T. Marx
wiley   +1 more source

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