Publications by authors named "L I Diez"
Article Synopsis
- Idiopathic REM sleep behavior disorder (iRBD) is linked to alpha-synucleinopathies, and the study aimed to evaluate autonomic nervous system (ANS) dysfunction in individuals with iRBD and its potential to predict clinical progression.
- In a study of 25 iRBD patients, 28% developed synucleinopathy, primarily Parkinson's disease, with many exhibiting abnormal ANS test results; those who progressed had significantly higher rates of dysfunction compared to those who did not.
- Results indicate that both symptomatic and subtle ANS dysfunctions are prevalent in iRBD, and specific adrenergic system issues may signal a higher short-term risk of developing synucleinopathy.
Article Synopsis
- The study investigates two surgical approaches (no-touch vs. superior mesenteric artery) in patients undergoing pancreatoduodenectomy for pancreatic ductal adenocarcinoma, focusing on circulating tumor cells during surgery.
- *Patients were randomly assigned to each group, and samples were taken to measure tumor cell activity at different surgical stages.
- *Results showed no significant differences in tumor cell mobilization or metastasis-free survival between the two approaches, but patients with tumor cell clusters mobilized during surgery had a higher rate of distant metastases within the first year.
Continuous High-Precision Positioning in Smartphones by FGO-Based Fusion of GNSS-PPK and PDR.
Micromachines (Basel)
September 2024
The availability of raw Global Navigation Satellites System (GNSS) measurements in Android smartphones fosters advancements in high-precision positioning for mass-market devices. However, challenges like inconsistent pseudo-range and carrier phase observations, limited dual-frequency data integrity, and unidentified hardware biases on the receiver side prevent the ambiguity resolution of smartphone GNSS. Consequently, relying solely on GNSS for high-precision positioning may result in frequent cycle slips in complex conditions such as deep urban canyons, underpasses, forests, and indoor areas due to non-line-of-sight (NLOS) and multipath conditions.
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- The study investigates changes in IgE sensitization to common allergens like dust mites, cats, dogs, and cockroaches over a 10-year period among patients with asthma, rhinitis, and atopic dermatitis.
- Results from 6,000 patient records indicate that 82% of individuals had sensitization to at least one allergen, with dust mites being the most common, and the exposure to certain allergens, such as Blomia tropicalis, increasing over time.
- The findings suggest that early exposure to dust mites is crucial for developing sensitization to other allergens, while exposure to pets, especially cats, is linked to a higher risk of developing atopy.
This work is focused on the bit error rate (BER) performance of spatial division multiplexing (SDM) systems over an optical channel with mode-dependent loss or gain (collectively referred to in this paper as MDL). When the latter is non-negligible, the BER has a random nature that introduces the outage probability as an important performance metric for the system design and also impacts on the selection of a forward-error correction (FEC) scheme. In MDL-impaired SDM systems, the pre-FEC BER is a random variable whose probability density function (PDF) and coding gain depend on the signal-to-noise ratio (SNR) at the receiver input.
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