Interactive Humanoid: Online Full-Body Motion Reaction Synthesis with Social Affordance Canonicalization and Forecasting

We focus on the human-humanoid interaction task optionally with an object. We propose a new task named online full-body motion reaction synthesis, which generates humanoid reactions based on the human actor's motions. The previous work only focuses on human interaction without objects and generates body reactions without hand. Besides, they also do not consider the task as an online setting, which means the inability to observe information beyond the current moment in practical situations. To support this task, we construct two datasets named HHI and CoChair and propose a unified method. Specifically, we propose to construct a social affordance representation. We first select a social affordance carrier and use SE(3)-Equivariant Neural Networks to learn the local frame for the carrier, then we canonicalize the social affordance. Besides, we propose a social affordance forecasting scheme to enable the reactor to predict based on the imagined future. Experiments demonstrate that our approach can effectively generate high-quality reactions on HHI and CoChair. Furthermore, we also validate our method on existing human interaction datasets Interhuman and Chi3D

CrossVideo: Self-supervised Cross-modal Contrastive Learning for Point Cloud Video Understanding

This paper introduces a novel approach named CrossVideo, which aims to enhance self-supervised cross-modal contrastive learning in the field of point cloud video understanding. Traditional supervised learning methods encounter limitations due to data scarcity and challenges in label acquisition. To address these issues, we propose a self-supervised learning method that leverages the cross-modal relationship between point cloud videos and image videos to acquire meaningful feature representations. Intra-modal and cross-modal contrastive learning techniques are employed to facilitate effective comprehension of point cloud video. We also propose a multi-level contrastive approach for both modalities. Through extensive experiments, we demonstrate that our method significantly surpasses previous state-of-the-art approaches, and we conduct comprehensive ablation studies to validate the effectiveness of our proposed designs

Helicity resolved Raman scattering of MoS2, MoSe2, WS2 and WSe2 atomic layers

The two-fold valley degeneracy in two-dimensional (2D) semiconducting transition metal dichalcogenides (TMDCs) (Mo,W)(S,Se)2 is suitable for "valleytronics", the storage and manupulation of information utilizing the valley degree of freedom. The conservation of luminescent photon helicity in these 2D crystal monolayers has been widely regarded as a benchmark indicator for charge carrier valley polarization. Here we perform helicity-resolved Raman scattering of the TMDC atomic layers. In drastic contrast to luminescence, the dominant first-order zone-center Raman bands, including the low energy breathing and shear modes as well as the higher energy optical phonons, are found to either maintain or completely switch the helicity of incident photons. These experimental observations, in addition to providing a useful tool for characterization of TMDC atomic layers, shed new light on the connection between photon helicity and valley polarization

The Theory of Dynamic Public Transit Priority with Dynamic Stochastic Park and Ride

Public transit priority is very important for relieving traffic congestion. The connotation of dynamic public transit priority and dynamic stochastic park and ride is presented. Based on the point that the travel cost of public transit is not higher than the travel cost of car, how to determine the level of dynamic public transit priority is discussed. The traffic organization method of dynamic public transit priority is introduced. For dynamic stochastic park and ride, layout principle, scale, and charging standard are discussed. Traveler acceptability is high through the analysis of questionnaire survey. Dynamic public transit priority with dynamic stochastic park and ride has application feasibility

Outcome Predictors in Patients Presenting With Acute Aortic Dissection

ObjectiveTo investigate the role of thyroid hormones and other factors in acute aortic dissection and an association with in-hospital adverse events.DesignA retrospective analysis.SettingA university-affiliated cardiac center.ParticipantsA total of 151 patients with aortic dissection admitted to the authors’ hospital between January 2011 and May 2015.InterventionNone.Measurements and ResultsThe total in-hospital mortality rate was 12.6%. Triiodothyronine (T3) level was lower in nonsurviving than surviving patients (0.8±0.3 v 1.0±0.4 nmol/L, p<0.05). T3 independently predicted in-hospital mortality (hazard ratio [HR] 0.07, 95% CI 0.01-0.43, p<0.01) and in-hospital acute renal failure (HR 0.22, 0.05-0.89, p<0.05) for all patients. Other independent predictors of in-hospital mortality were pericardial effusion (HR 8.18, 2.11-31.67, p<0.01), conservative treatment (HR 82.12, 12.49-540.09, p<0.01) and Stanford type-A aortic dissection (HR 3.86, 1.06-14.09, p<0.05). Inpatient conservative treatment, T3 (HR 0.01, 0.00-0.18, p<0.01) as well as pericardial effusion (HR 11.80, 2.46-56.59, p<0.01), Stanford type-A dissection (HR 22.35, 3.15-158.40, p<0.01), and in-hospital acute renal failure (HR 16.95, 2.04-140.86, p<0.01) were predictors for in-hospital mortality. In nonconservatively treated patients, T3 (HR 0.02, 0.00-0.88, p<0.05) as well as cardiac care unit stay (HR 0.74, 0.59-0.94, p<0.01) and postoperative acute renal failure (HR 21.32, 3.07-147.88, p<0.01) were predictors for in-hospital mortality.ConclusionT3 was downregulated in acute aortic dissection. Low T3 level was a risk factor for in-hospital death and acute renal failure in patients with acute aortic dissection

Bench surgery with autotransplantation for bilateral Wilms tumor—A feasible technique for renal sinus invasion

PurposeBilateral Wilms tumor (BWT) with renal sinus invasion requires extremely difficult surgical care. This study presents an alternative strategy for tumor removal while at the same time preserving the renal parenchyma.Materials and methodsIn total, 9 cases of synchronous BWT were admitted to our hospital between May 2016 to Aug 2020. We retrospectively reviewed the clinical data, surgical technique, and functional and oncological outcomes of these cases.ResultsThe 9 cases included 3 males and 6 females, with a median age of 12 months at surgery (range 7–40). A total of 14 kidney units had renal sinus invasion (77.8%), whereas multifocal neoplasms were observed in 7 units (38.9%). The local stage distribution revealed 1 kidney with stage I, 10 kidneys with stage II, and 7 kidneys with stage III. Nephron-sparing surgery was performed on 15 kidney units (83.3%), among which 13 (72.2%) underwent bench surgery with autotransplantation (BS-AT), whereas 2 (11.1%) were subjected to tumor enucleation in vivo. Urinary leakage was the most prevalent postoperative complication. We observed negative margins. During the mean follow-up of 28.4 months, 2 patients (22.2%) succumbed from sepsis and renal failure, respectively, whereas the other 7 (77.8%) survived without recurrence. Survivors experienced an estimated glomerular filtration rate of 81 ± 15.4 ml/(min × 1.73 m2). The endpoint renal volume of 9 renal units receiving BS-AT significantly increased (P = 0.02).ConclusionsIn summary, the surgical management of bilateral Wilms tumor requires meticulous operative approach and technique. Besides, BS-AT provides a viable alternative to nephron-sparing surgery for BWT patients with renal sinus invasion