我们引入了一个球形指尖传感器进行动态操作。它基于气压压力和飞行时间接近传感器，并且是低延迟，紧凑且身体健壮的。传感器使用训练有素的神经网络根据压力传感器的数据来估计接触位置和三轴接触力，这些数据嵌入了传感器的聚氨酯橡胶范围内。飞行器传感器朝三个不同的外向方向面对，并且一个集成的微控制器样品以200 Hz的速度每个单个传感器。为了量化系统潜伏期对动态操作性能的影响，我们开发和分析了一个称为碰撞脉冲比率的度量，并表征了我们新传感器的端到端潜伏期。我们还向传感器提出了实验演示，包括测量接触过渡，进行粗大映射，与移动物体保持接触力以及避免碰撞的反应。

现代的机器人操纵系统缺乏人类的操纵技巧，部分原因是它们依靠围绕视觉数据的关闭反馈循环，这会降低系统的带宽和速度。通过开发依赖于高带宽力，接触和接近数据的自主握力反射，可以提高整体系统速度和鲁棒性，同时减少对视力数据的依赖。我们正在开发一个围绕低渗透的高速手臂建造的新系统，该系统用敏捷的手指结合了一个高级轨迹计划器，以小于1 Hz的速度运行，低级自主反射控制器的运行量超过300 Hz。我们通过将成功的基线控制器和反射握把控制器的变化的成功抓Grasps的体积和反射系统的体积进行比较，从而表征了反射系统，发现我们的控制器将成功的掌握率与基线相比扩大了55％。我们还使用简单的基于视觉的计划者在自主杂波清除任务中部署了反身抓握控制器，在清除100多个项目的同时，达到了超过90％的成功率。

我们提出了一个本体感受的远程操作系统，该系统使用反身握把算法来增强拾取任务的速度和稳健性。该系统由两个使用准直接驱动驱动的操纵器组成，以提供高度透明的力反馈。末端效应器具有双峰力传感器，可测量3轴力信息和2维接触位置。此信息用于防滑和重新磨碎反射。当用户与所需对象接触时，重新抓紧反射将抓地力的手指与对象上的抗肌点对齐，以最大程度地提高抓握稳定性。反射仅需150毫秒即可纠正用户选择的不准确的grasps，因此用户的运动仅受到Re-Grasp的执行的最小干扰。一旦建立了抗焦点接触，抗滑动反射将确保抓地力施加足够的正常力来防止物体从抓地力中滑出。本体感受器的操纵器和反射抓握的结合使用户可以高速完成远程操作的任务。

这项工作将控制屏障功能（CBF）与全身控制器结合在一起，以使MIT类人动物自我避免。现有的反应性控制器进行自我避免，不能保证无碰撞的轨迹，因为它们不利用机器人的完整动态，从而损害了运动学的可行性。相比之下，拟议的CBF-WBC控制器可以实时理解机器人的动力学不足，以确保无碰撞运动。该方法的有效性在模拟中得到了验证。首先，一个简单的手段实验表明，CBF-WBC使机器人的手能够偏离不可行的参考轨迹，以避免自我收集。其次，CBF-WBC与设计用于动态运动的线性模型预测控制器（LMPC）结合使用，并使用CBF-WBC来跟踪LMPC预测。质心动量任务还用于产生有助于人形运动和干扰恢复的手臂运动。步行实验表明，CBF允许质心动量任务产生可行的手臂运动，并在高级规划师提供的脚步位置或摇摆轨迹时避免腿部自我收获，对于真正的机器人来说是不可行的。

本文提出了一个模型预测控制（MPC）框架，以实现MIT类人体上的动态步态。除了适应脚步位置和在线时机外，该建议的方法还可以理解高度，接触扳手，躯干旋转，运动学限制和谈判不均匀的地形。具体而言，线性MPC（LMPC）通过与当前的脚步位置进行线性线性线性线性来优化所需的脚步位置。低级任务空间控制器跟踪从LMPC的预测状态和控制轨迹，以利用全身动力学。最后，采用自适应步态频率方案来修改步进频率并增强步行控制器的鲁棒性。 LMPC和任务空间控制都可以作为二次程序（QP）有效地求解，因此适用于实时应用程序。模拟研究中，MIT类人动物遍历波场并从冲动性干扰中恢复为拟议方法恢复。

用多腿机器人的动态跳跃在规划和控制方面提出了一个具有挑战性的问题。制定跳转优化以允许快速在线执行难;有效地使用这种能够生成长地平轨迹的能力进一步复杂化问题。在这项工作中，我们提出了一种新的分层规划框架来解决这个问题。我们首先制定了一个实时的轨道轨迹优化，用于执行全向跳跃。然后，我们将该优化的结果嵌入到低维跳转可行性分类器中。该分类器由高级策划器利用，以产生动态可行的路径，并且对硬件轨迹实现中的可变性也很稳健。我们在迷你猎豹视觉上部署我们的框架，展示了机器人的生成和执行可靠的目标导向路径，这些路径涉及前进，横向和旋转跳跃到比机器人的标称臀部高度高1.35倍。通过全向跳跃计划的能力极大地扩展了机器人相对于限制跳跃到矢状或前平面的规划者的移动性。

The 3D-aware image synthesis focuses on conserving spatial consistency besides generating high-resolution images with fine details. Recently, Neural Radiance Field (NeRF) has been introduced for synthesizing novel views with low computational cost and superior performance. While several works investigate a generative NeRF and show remarkable achievement, they cannot handle conditional and continuous feature manipulation in the generation procedure. In this work, we introduce a novel model, called Class-Continuous Conditional Generative NeRF ($\text{C}^{3}$G-NeRF), which can synthesize conditionally manipulated photorealistic 3D-consistent images by projecting conditional features to the generator and the discriminator. The proposed $\text{C}^{3}$G-NeRF is evaluated with three image datasets, AFHQ, CelebA, and Cars. As a result, our model shows strong 3D-consistency with fine details and smooth interpolation in conditional feature manipulation. For instance, $\text{C}^{3}$G-NeRF exhibits a Fr\'echet Inception Distance (FID) of 7.64 in 3D-aware face image synthesis with a $\text{128}^{2}$ resolution. Additionally, we provide FIDs of generated 3D-aware images of each class of the datasets as it is possible to synthesize class-conditional images with $\text{C}^{3}$G-NeRF.

In both terrestrial and marine ecology, physical tagging is a frequently used method to study population dynamics and behavior. However, such tagging techniques are increasingly being replaced by individual re-identification using image analysis. This paper introduces a contrastive learning-based model for identifying individuals. The model uses the first parts of the Inception v3 network, supported by a projection head, and we use contrastive learning to find similar or dissimilar image pairs from a collection of uniform photographs. We apply this technique for corkwing wrasse, Symphodus melops, an ecologically and commercially important fish species. Photos are taken during repeated catches of the same individuals from a wild population, where the intervals between individual sightings might range from a few days to several years. Our model achieves a one-shot accuracy of 0.35, a 5-shot accuracy of 0.56, and a 100-shot accuracy of 0.88, on our dataset.

Feature selection helps reduce data acquisition costs in ML, but the standard approach is to train models with static feature subsets. Here, we consider the dynamic feature selection (DFS) problem where a model sequentially queries features based on the presently available information. DFS is often addressed with reinforcement learning (RL), but we explore a simpler approach of greedily selecting features based on their conditional mutual information. This method is theoretically appealing but requires oracle access to the data distribution, so we develop a learning approach based on amortized optimization. The proposed method is shown to recover the greedy policy when trained to optimality and outperforms numerous existing feature selection methods in our experiments, thus validating it as a simple but powerful approach for this problem.

The purpose of this work was to tackle practical issues which arise when using a tendon-driven robotic manipulator with a long, passive, flexible proximal section in medical applications. A separable robot which overcomes difficulties in actuation and sterilization is introduced, in which the body containing the electronics is reusable and the remainder is disposable. A control input which resolves the redundancy in the kinematics and a physical interpretation of this redundancy are provided. The effect of a static change in the proximal section angle on bending angle error was explored under four testing conditions for a sinusoidal input. Bending angle error increased for increasing proximal section angle for all testing conditions with an average error reduction of 41.48% for retension, 4.28% for hysteresis, and 52.35% for re-tension + hysteresis compensation relative to the baseline case. Two major sources of error in tracking the bending angle were identified: time delay from hysteresis and DC offset from the proximal section angle. Examination of these error sources revealed that the simple hysteresis compensation was most effective for removing time delay and re-tension compensation for removing DC offset, which was the primary source of increasing error. The re-tension compensation was also tested for dynamic changes in the proximal section and reduced error in the final configuration of the tip by 89.14% relative to the baseline case.