57,086 research outputs found
Multi-Moji: Combining Thermal, Vibrotactile and Visual Stimuli to Expand the Affective Range of Feedback
This paper explores the combination of multiple concurrent
modalities for conveying emotional information in HCI:
temperature, vibration and abstract visual displays. Each modality
has been studied individually, but can only convey a
limited range of emotions within two-dimensional valencearousal
space. This paper is the first to systematically combine
multiple modalities to expand the available affective
range. Three studies were conducted: Study 1 measured the
emotionality of vibrotactile feedback by itself; Study 2 measured
the perceived emotional content of three bimodal combinations:
vibrotactile + thermal, vibrotactile + visual and
visual + thermal. Study 3 then combined all three modalities.
Results show that combining modalities increases the available
range of emotional states, particularly in the problematic
top-right and bottom-left quadrants of the dimensional
model. We also provide a novel lookup resource for designers
to identify stimuli to convey a range of emotions
Orbital Angular Momentum Waves: Generation, Detection and Emerging Applications
Orbital angular momentum (OAM) has aroused a widespread interest in many
fields, especially in telecommunications due to its potential for unleashing
new capacity in the severely congested spectrum of commercial communication
systems. Beams carrying OAM have a helical phase front and a field strength
with a singularity along the axial center, which can be used for information
transmission, imaging and particle manipulation. The number of orthogonal OAM
modes in a single beam is theoretically infinite and each mode is an element of
a complete orthogonal basis that can be employed for multiplexing different
signals, thus greatly improving the spectrum efficiency. In this paper, we
comprehensively summarize and compare the methods for generation and detection
of optical OAM, radio OAM and acoustic OAM. Then, we represent the applications
and technical challenges of OAM in communications, including free-space optical
communications, optical fiber communications, radio communications and acoustic
communications. To complete our survey, we also discuss the state of art of
particle manipulation and target imaging with OAM beams
Potential Upgrade of the CMS Tracker Analog Readout Optical Links Using Bandwidth Efficient Digital Modulation
The potential application of advanced digital communication schemes in a
future upgrade of the CMS Tracker readout optical links is currently being
investigated at CERN. We show experimentally that multi-Gbit/s data rates are
possible over the current 40 MSamples/s analog optical links by employing
techniques similar to those used in ADSL. The concept involves using one or
more digitally-modulated sinusoidal carriers in order to make efficient use of
the available bandwidth.Comment: Presented at LECC 2006, Valencia, Spain. 5 pages, 11 figures
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