Airborne pollen cause seasonal allergies and the number of people affected increases yearly due to global warming and urbanization. Governmental pollen sensing stations are sampling traps which require manual pollen i...
ISBN:
(纸本)9780994988645
Airborne pollen cause seasonal allergies and the number of people affected increases yearly due to global warming and urbanization. Governmental pollen sensing stations are sampling traps which require manual pollen identification and counting by trained personnel in the lab. In the past years, a number of researchers and startups started working towards automated pollen measurements by exploring a wide range of techniques. Many solutions reported in the literature are expensive or work for a limited number of pollen species. In this paper, we present the design of a prototype of an automated and affordable pollen detection device built from off-the-shelf components. The design consists of three subsystems operating in the field and communicating the data to the backend server: (1) a particle trap with automatic filtering, (2) a particle concentration subsystem, and (3) a digital transmitted light microscope with layer-wise focus. The prototype shows effective particle gathering, filtering and concentration in a tiny-sized area. As a result, we reduce particle loss and improve image quality taken by the optical system when searching and focusing on pollen grains. The test results show that our device achieves high efficiency with up to 150 l/min air flow rates, evaluates over 90 % of captured pollen grains, and achieves 1 h measurement delay on average (2 h at maximum). The prototype collects raw time-stamped microscopic images of pollen with 5-60 depth layers per sample depending on the number of objects contained in one sample. All images are transmitted to the backend server where we run a pollen detection algorithm to extract individual pollen grains from every image. We achieve 0.90 average precision and F1-score of 0.88 when detecting pollen in the images of individual layers taken in the field. Our prototype successfully operated in the wild for 115 days between April and August 2019, and shows high stability under a wide range of varying weather conditions,
Incorporating Connected and Automated Vehicles (CAVs) into urban traffic networks presents opportunities and challenges for traffic management systems. This paper aims to develop an integrated routing and traffic sign...
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We aimed to develop a whole-genome sequencing(WGS)-based copy number variant(CNV)calling algorithm with the potential of replacing chromosomal microarray assay(CMA)for clinical ***-CNV is thus developed for CNV detect...
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We aimed to develop a whole-genome sequencing(WGS)-based copy number variant(CNV)calling algorithm with the potential of replacing chromosomal microarray assay(CMA)for clinical ***-CNV is thus developed for CNV detection from WGS *** performance of this CNV calling algorithm was evaluated in a blinded manner on 31 samples and compared to the 112 CNVs reported by clinically validated CMAs for these 31 *** result showed that JAX-CNV recalled 100%of these ***,JAX-CNV identified an average of 30 CNVs per individual,representing an approximately seven-fold increase compared to calls of clinically validated *** validation of 24 randomly selected CNVs showed one false positive,i.e.,a false discovery rate(FDR)of 4.17%.A robustness test on lowercoverage data revealed a 100%sensitivity for CNVs larger than 300 kb(the current threshold for College of American Pathologists)down to 10×*** CNVs larger than 50 kb,sensitivities were 100%for coverages deeper than 20×,97%for 15×,and 95%for 10×.We developed a WGS-based CNV pipeline,including this newly developed CNV caller JAX-CNV,and found it capable of detecting CMA-reported CNVs at a sensitivity of 100%with about a FDR of 4%.We propose that JAX-CNV could be further examined in a multi-institutional study to justify the transition of first-tier genetic testing from CMAs to ***-CNV is available at https://***/TheJacksonlaboratory/JAX-CNV.
A quadrature rule for the finite Hilbert Transform via trapezoid type inequalities is obtained. Some numerical experiments for different divisions of the interval [a, b] are also presented.
A quadrature rule for the finite Hilbert Transform via trapezoid type inequalities is obtained. Some numerical experiments for different divisions of the interval [a, b] are also presented.
This paper studies the optimal control problem for continuous-time nonaffine nonlinear dynamic systems with unknown dynamics. By using adaptive dynamic programming (ADP) method, a non-model based optimal control desig...
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ISBN:
(纸本)9781467360890
This paper studies the optimal control problem for continuous-time nonaffine nonlinear dynamic systems with unknown dynamics. By using adaptive dynamic programming (ADP) method, a non-model based optimal control design is given. The convergence analysis for the designed control scheme is presented. Finally, a numerical example is adopted to illustrate the effectiveness of the obtained algorithm.
The paper proposes a throughput and energy-aware medium-access-control protocol for wireless sensor networks. The proposed approach provides a sleeping-time adjustment scheme to flexibly adjust the sleep time to reduc...
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The paper proposes a throughput and energy-aware medium-access-control protocol for wireless sensor networks. The proposed approach provides a sleeping-time adjustment scheme to flexibly adjust the sleep time to reduce the wasted energy in a low-traffic network and increase the throughput in a high-traffic network. The sleeping and waking durations are determined using time counters rather than time slots. A waking-time sharing scheme is responsible for establishing the common waking time among a group of neighbors for group communication. The proposed protocol solves the energy inefficiency caused by idle listening. Simulation experiments have been performed to demonstrate the effectiveness of the proposed approach compared to some other energy-aware medium-access-control protocols.
We propose a new intruder deduction system with XOR named IDX. By introducing the concept of abstract XOR term and its operation rules, IDX is able to eliminate complex equational reasoning of XOR. Moreover, it reduce...
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