2,713 research outputs found
BroadBEV: Collaborative LiDAR-camera Fusion for Broad-sighted Bird's Eye View Map Construction
A recent sensor fusion in a Bird's Eye View (BEV) space has shown its utility
in various tasks such as 3D detection, map segmentation, etc. However, the
approach struggles with inaccurate camera BEV estimation, and a perception of
distant areas due to the sparsity of LiDAR points. In this paper, we propose a
broad BEV fusion (BroadBEV) that addresses the problems with a spatial
synchronization approach of cross-modality. Our strategy aims to enhance camera
BEV estimation for a broad-sighted perception while simultaneously improving
the completion of LiDAR's sparsity in the entire BEV space. Toward that end, we
devise Point-scattering that scatters LiDAR BEV distribution to camera depth
distribution. The method boosts the learning of depth estimation of the camera
branch and induces accurate location of dense camera features in BEV space. For
an effective BEV fusion between the spatially synchronized features, we suggest
ColFusion that applies self-attention weights of LiDAR and camera BEV features
to each other. Our extensive experiments demonstrate that BroadBEV provides a
broad-sighted BEV perception with remarkable performance gains
Rim 2/Hipa CACTA transposon display ; A new genetic marker technique in Oryza species
BACKGROUND: Transposons constitute the major fractions of repetitive sequences in eukaryotes, and have been crucial in the shaping of current genomes. Transposons are generally divided into two classes according to the mechanism underlying their transposition: RNA intermediate class 1 and DNA intermediate class 2. CACTA is a class 2 transposon superfamily, which is found exclusively in plants. As some transposons, including the CACTA superfamily, are highly abundant in plant species, and their nucleotide sequences are highly conserved within a family, they can be utilized as genetic markers, using a slightly modified version of the conventional AFLP protocol. Rim2 /Hipa is a CACTA transposon family having 16 bp consensus TIR sequences to be present in high copy numbers in rice genome. This research was carried out in order to develop a Rim2/Hipa CACTA-AFLP or Rim2/Hipa CACTA-TD (transposon display, hereafter Rim2/Hipa-TD) protocol for the study of genetic markers in map construction and the study of genetic diversity in rice. RESULTS: Rim2/Hipa-TD generated ample polymorphic profiles among the different rice accessions, and the amplification profiles were highly reproducible between different thermocyclers and Taq polymerases. These amplification profiles allowed for clear distinction between two different ecotypes, Japonica and Indica, of Oryza sativa. In the analysis of RIL populations, the Rim2/Hipa-TD markers were found to be segregated largely in a dominant manner, although in a few cases, non-parental bands were observed in the segregating populations. Upon linkage analysis, the Rim2/Hipa-TD markers were found to be distributed in the regions proximal to the centromeres of the chromosomes. The distribution of the Rim2/Hipa CACTA elements was surveyed in 15 different Oryza species via Rim2/Hipa-TD. While Rim2/Hipa-TD yielded ample amplification profiles between 100 to 700 bp in the AA diploid Oryza species, other species having BB, CC, EE, BBCC and CCDD, profiles demonstrated that most of the amplified fragments were larger than 400 bp, and that our methods were insufficient to clearly distinguish between these fragments. However, the overall amplification profiles between species in the Oryza genus were fully distinct. Phenetic relationships among the AA diploid Oryza species, as evidenced by the Rim2/Hipa-TD markers, were matched with their geographical distributions. CONCLUSION: The abundance of the Rim2/Hipa TIR sequences is very informative since the Rim2/Hipa-TD produced high polymorphic profiles with ample reproducibility within a species as well as between species in the Oryza genus. Therefore, Rim2/Hipa-TD markers can be useful in the development of high-density of genetic map around the centromeric regions. Rim2/Hipa-TD may also prove useful in evaluations of genetic variation and species relationships in the Oryza species
Implicit Neural Image Stitching With Enhanced and Blended Feature Reconstruction
Existing frameworks for image stitching often provide visually reasonable
stitchings. However, they suffer from blurry artifacts and disparities in
illumination, depth level, etc. Although the recent learning-based stitchings
relax such disparities, the required methods impose sacrifice of image
qualities failing to capture high-frequency details for stitched images. To
address the problem, we propose a novel approach, implicit Neural Image
Stitching (NIS) that extends arbitrary-scale super-resolution. Our method
estimates Fourier coefficients of images for quality-enhancing warps. Then, the
suggested model blends color mismatches and misalignment in the latent space
and decodes the features into RGB values of stitched images. Our experiments
show that our approach achieves improvement in resolving the low-definition
imaging of the previous deep image stitching with favorable accelerated
image-enhancing methods. Our source code is available at
https://github.com/minshu-kim/NIS
MEASUREMENT OF CARDIAC FUNCTION USING PRESSURE-VOLUME CONDUCTANCE CATHETER TECHNIQUE IN A NEW RAT MODEL OF CHRONIC MITRAL REGURGITATION
Heterogeneous nuclear ribonucleoprotein (hnRNP) L promotes DNA damage-induced cell apoptosis by enhancing the translation of p53
The tumor suppressor p53 is an essential gene in the induction of cell cycle arrest, DNA repair, and apoptosis. p53 protein is induced under cellular stress, blocking cell cycle progression and inducing DNA repair. Under DNA damage conditions, it has been reported that post-transcriptional regulation of p53 mRNA contributes to the increase in p53 protein level. Here we demonstrate that heterogeneous nuclear ribonucleoprotein (hnRNP) L enhances p53 mRNA translation. We found that hnRNP L is increased and binds to the 5' UTR of p53 mRNA in response to DNA damage. Increased hnRNP L caused enhancement of p53 mRNA translation. Conversely, p53 protein levels were decreased following hnRNP L knock-down, rendering them resistant to apoptosis and arrest in the G2/M phase after DNA damage. Thus, our findings suggest that hnRNP L functions as a positive regulator of p53 translation and promotes cell cycle arrest and apoptosis.11Ysciescopu
Urinary bladder rupture during voiding cystourethrography
Voiding cystourethrography (VCUG) is a commonly performed diagnostic procedure for the evaluation of vesicoureteral reflux with urinary tract infection or congenital renal diseases in children. The procedure is relatively simple and cost-effective, and complications are very rare. The iatrogenic complication of VCUG range from discomfort, urinary tract infection to bacteremia, as well as bladder rupture. Bladder rupture is a rare complication of VCUG, and only a few cases were reported. Bladder rupture among healthy children during VCUG is an especially uncommon event. Bladder rupture associated with VCUG is usually more common in chronically unused bladders like chronic renal failure. Presented is a case of bladder rupture that occurred during a VCUG in a healthy 9-month-old infant, due to instilled action of dye by high pressure. This injury completely healed after 7 days of operation, and it was confirmed with a postoperative cystography. The patient's bladder volume, underlying disease, velocity of the contrast media instilled, catheter size, and styles of instillation are important factors to prevent bladder rupture during VCUG. Management of bladder rupture should be individualized, but the majority of infants are treated with the operation. In conclusion, bladder rupture is a rare complication, however, delicate attention is needed in order to prevent more dire situations
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