237 research outputs found
An artificial iris ASIC with high voltage liquid crystal driver and 10nA light range detector and 40nA blink detector for LCD flicker removal
No full textIn a functional eye, the iris controls the pupil diameter to regulate the exposure of the retina. While iris deficiencies such as aniridia or leiomyoma can be mitigated with fixed or adaptive artificial irises [1] and adaptive transparency glasses exist to alleviate this situation, they do not mimic the normal functionality of the natural iris. To address this, a fully encapsulated, self-contained artificial iris embedded in a smart contact lens is proposed. A control ASIC is developed in 0.18 μm 16 V BCD TSMC with typ. 1.9 μw current consumption from 3 V supply voltage at office light condition
An Artificial Iris ASIC with High Voltage Liquid Crystal Driver, 10 nA Light Range Detector and 40 nA Blink Detector for LCD flicker removal
No full textAn Artificial Iris ASIC with High Voltage Liquid Crystal Driver, 10 nA Light Range Detector and 40 nA Blink Detector for LCD flicker removal
No full textThe impact of focused attention on emotional evaluation: An eye-tracking investigation
No full textSubmission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2022-12-01Emotional well-being depends on the ability to successfully engage a variety of coping strategies to regulate affective responses. Most studies have investigated the effectiveness of emotion regulation (ER) strategies that are deployed relatively later in the timing of processing that leads to full emotional experiences (i.e., Reappraisal and Suppression). However, less is known about strategies engaged in earlier stages of emotion processing, such as those involving attentional deployment. Here, we investigate the effectiveness of self-guided Focused Attention (FA) in reducing the impact of unpleasant pictures on the experienced negative affect. Participants viewed a series of composite images with distinguishable foreground (FG, either negative or neutral) and background (BG, always neutral) areas, and were asked to focus on the FG or BG content of the pictures. Eye-tracking data were recorded while performing the FA task, along with participants’ rating of their experienced emotional response following the presentation of each image. First, proving the effectiveness of self-guided FA in down-regulating negative affect, focusing away from the emotional content of pictures (BG focus) was associated with lower emotional ratings. Second, trial-based eye-tracking data corroborated these results, showing that spending less time gazing within the negative FG predicted reductions in emotional ratings. Third, this reduction was largest among subjects who habitually use Suppression as an emotion regulation strategy. Overall, the present findings expand the evidence regarding the FA’s effectiveness in controlling the impact of emotional stimuli, and inform the development of training interventions emphasizing attentional control to improve emotional well-being.The student, Paul Bogdan, accepted the attached license on 2020-12-09 at 18:11.The student, Paul Bogdan, submitted this Thesis for approval on 2020-12-09 at 18:21.This Thesis was approved for publication on 2020-12-10 at 10:51.DSpace SAF Submission Ingestion Package generated from Vireo submission #16110 on 2021-03-04 at 16:33:54Made available in DSpace on 2021-03-05T21:47:36Z (GMT). No. of bitstreams: 2
BOGDAN-THESIS-2020.pdf: 421345 bytes, checksum: 7c690297b9e8603f7e7d5eb19dc06696 (MD5)
LICENSE.txt: 4208 bytes, checksum: 7d0a266fbe3ac94ed1367912d61561ed (MD5)
Previous issue date: 2020-12-10Embargo set by: Seth Robbins for item 117347
Lift date: 2023-03-05T21:47:41Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemAuthor requested closed access (OA after 2yrs) in Vireo ETD systemLimite
Time Multiplexed Active Neural Probe with 678 Parallel Recording Sites
No full textWe present a high density CMOS neural probe with
active electrodes (pixels), consisting of dedicated in-situ circuits
for signal source amplification. The complete probe contains 1356
neuron size (20x20 μm2) pixels densely packed on a 50 μm thick,
100 μm wide and 8 mm long shank. It allows simultaneous highperformance
recording from 678 electrodes and a possibility to
simultaneously observe all of the 1356 electrodes with increased
noise. This considerably surpasses the state of the art active neural
probes in electrode count and flexibility. The measured action
potential band noise is 12.4 μVrms, with just 3 μW power
dissipation per electrode amplifier and 45 μW per channel
(including data transmission)
Time Multiplexed Active Neural Probe with 1356 Parallel Recording Sites
No full textWe present a high electrode density and high channel count CMOS (complementary metal-oxide-semiconductor) active neural probe containing 1344 neuron sized recording pixels (20 µm × 20 µm) and 12 reference pixels (20 µm × 80 µm), densely packed on a 50 µm thick, 100 µm wide, and 8 mm long shank. The active electrodes or pixels consist of dedicated in-situ circuits for signal source amplification, which are directly located under each electrode. The probe supports the simultaneous recording of all 1356 electrodes with sufficient signal to noise ratio for typical neuroscience applications. For enhanced performance, further noise reduction can be achieved while using half of the electrodes (678). Both of these numbers considerably surpass the state-of-the art active neural probes in both electrode count and number of recording channels. The measured input referred noise in the action potential band is 12.4 µVrms, while using 678 electrodes, with just 3 µW power dissipation per pixel and 45 µW per read-out channel (including data transmission)
Testing the Application for Analyzing Structured Entities
No full textThe paper presents the testing process of the application for the analysis of structured text entities. The structured entities are presented. Quality characteristics of structured entities are identified and analyzed. The design and building processes are presented. Rules for building structured entities are described. The steps of building the application for the analysis of structured text entities are presented. The objective of the testing process is defined. Ways of testing the application on components and as a whole are established. A testing strategy for different objectives is proposed. The behavior of users during the testing period is analyzed. Statistical analysis regarding the behavior of users in processes of infinite resources access are realized.Structured Entity, Application, Analysis, Testing, Metrics
Even Fourier multipliers and martingale transforms in infinite dimensions
No full textIn this paper we show sharp lower bounds for norms of even homogeneous Fourier multipliers in L(Lp(Rd;X)) for 1<p<∞and for a UMD Banach space X in terms of the range of the corresponding symbol. For example, if the range contains a1,…,aN∈C, then the norm of the multiplier exceeds ‖a1R1 2+⋯+aNRN 2‖L(Lp(RN;X)), where Rn is the corresponding Riesz transform. We also provide sharp upper bounds of norms of Bañuelos–Bogdan type multipliers in terms of the range of the functions involved. The main tools that we exploit are A-weak differential subordination of martingales and UMDp A constants, which are introduced here.Accepted Author ManuscriptAnalysi
The Use of Multi-Source Feedback as a Human Resource Management Tool
No full textThe article is devoted to the Multiple Source Assessment method as a process of Human Resource Management. Several aspects related to the definition of this method and others concerning its importance, purpose, application and feedback are presented. This method has been used for personal development at the organizational level, and then has begun to be directed to other purposes related of efficiency and performance. The method is considered revolutionary for human resources’ evaluation. It is increasingly used at an international level, with a growing prevalence. Recently, it has also begun to be used in the Romanian companies.multiple source assessment, human resource management, performance
The Case for Polymorphic Registers in Dataflow Computing
No full textHeterogeneous systems are becoming increasingly popular, delivering high performance through hardware specialization. However, sequential data accesses may have a negative impact on performance. Data parallel solutions such as Polymorphic Register Files (PRFs) can potentially accelerate applications by facilitating high-speed, parallel access to performance-critical data. This article shows how PRFs can be integrated into dataflow computational platforms. Our semi-automatic, compiler-based methodology generates customized PRFs and modifies the computational kernels to efficiently exploit them. We use a separable 2D convolution case study to evaluate the impact of memory latency and bandwidth on performance compared to a state-of-the-art NVIDIA Tesla C2050 GPU. We improve the throughput up to 56.17X and show that the PRF-augmented system outperforms the GPU for 9×9
or larger mask sizes, even in bandwidth-constrained systems
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