来自用户 符毓 Yu 的文献。
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21.
符毓 Yu (2023-07-31 16:41):
#paper doi: 10.48550/arXiv.2307.05973 2023, Composable 3D Value Maps for Robotic Manipulation with Language Models. 李飞飞团队最新论文研究,把语言模型与机器人操作结合。与大语言模型结合后人机交互效率得到提高,并且能做到基于视觉的实时轨迹规划。目测机械臂移动速率为常见机械臂工作速率的八分之一,到真实应用的话稳定性还需要进一步提高(超过25%的出错率)
Abstract:
Large language models (LLMs) are shown to possess a wealth of actionable knowledge that can be extracted for robot manipulation in the form of reasoning and planning. Despite the progress, … >>>
Large language models (LLMs) are shown to possess a wealth of actionable knowledge that can be extracted for robot manipulation in the form of reasoning and planning. Despite the progress, most still rely on pre-defined motion primitives to carry out the physical interactions with the environment, which remains a major bottleneck. In this work, we aim to synthesize robot trajectories, i.e., a dense sequence of 6-DoF end-effector waypoints, for a large variety of manipulation tasks given an open-set of instructions and an open-set of objects. We achieve this by first observing that LLMs excel at inferring affordances and constraints given a free-form language instruction. More importantly, by leveraging their code-writing capabilities, they can interact with a visual-language model (VLM) to compose 3D value maps to ground the knowledge into the observation space of the agent. The composed value maps are then used in a model-based planning framework to zero-shot synthesize closed-loop robot trajectories with robustness to dynamic perturbations. We further demonstrate how the proposed framework can benefit from online experiences by efficiently learning a dynamics model for scenes that involve contact-rich interactions. We present a large-scale study of the proposed method in both simulated and real-robot environments, showcasing the ability to perform a large variety of everyday manipulation tasks specified in free-form natural language. Project website: this https URL <<<
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22.
符毓 Yu (2023-06-26 23:22):
#paper doi:10.1038/171737a0 Nature, 2014, Passive radiative cooling below ambient air temperature under direct sunlight。辐射制冷材料通过反射包括紫外线、可视光、近红外和中红外等让物体温度低于环境温度。本文通过7层材料构成的冷却材料,首次在日间成功实现辐射制冷。在850W/平方米的日照下实现4.9度的降温
23.
符毓 Yu (2023-05-31 22:40):
#paper doi.org/10.48550/arXiv.2212.12669 Nature, 2023, On Realization of Intelligent Decision-Making in the Real World: A Foundation Decision Model Perspective。本文讨论了由于不确定性和动态环境,在现实场景中实现机器主导的智能决策(IDM)所面临的挑战。作者提出了一个基础决策模型(FDM)的想法来克服这些挑战,并使IDM得到广泛采用。本文还展示了人工智能增强IDM潜在的各种方法和理论可行性。
Abstract:
The pervasive uncertainty and dynamic nature of real-world environments present significant challenges for the widespread implementation of machine-driven Intelligent Decision-Making (IDM) systems. Consequently, IDM should possess the ability to continuously … >>>
The pervasive uncertainty and dynamic nature of real-world environments present significant challenges for the widespread implementation of machine-driven Intelligent Decision-Making (IDM) systems. Consequently, IDM should possess the ability to continuously acquire new skills and effectively generalize across a broad range of applications. The advancement of Artificial General Intelligence (AGI) that transcends task and application boundaries is critical for enhancing IDM. Recent studies have extensively investigated the Transformer neural architecture as a foundational model for various tasks, including computer vision, natural language processing, and reinforcement learning. We propose that a Foundation Decision Model (FDM) can be developed by formulating diverse decision-making tasks as sequence decoding tasks using the Transformer architecture, offering a promising solution for expanding IDM applications in complex real-world situations. In this paper, we discuss the efficiency and generalization improvements offered by a foundation decision model for IDM and explore its potential applications in multi-agent game AI, production scheduling, and robotics tasks. Lastly, we present a case study demonstrating our FDM implementation, DigitalBrain (DB1) with 1.3 billion parameters, achieving human-level performance in 870 tasks, such as text generation, image captioning, video game playing, robotic control, and traveling salesman problems. As a foundation decision model, DB1 represents an initial step toward more autonomous and efficient real-world IDM applications. <<<
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24.
符毓 Yu (2023-04-30 17:23):
#paper doi: 10.1126/science.272.5258.85 Science, 1996, Imprint Lithography with 25-Nanometer Resolution。Stephen Chou(周郁)首次提出纳米压印方式用半导体集成电路生产上,并成功做出25nm的精度。纳米压印比起光刻具有低成本,高通量的优势。 相关行业最新进展:近年来佳能已将纳米压印应用到了 15nm 的 NAND 闪存制造上,并宣称2025年有望用此技术量产5nm芯片
IF:44.700Q1 Science, 2006. DOI: 10.1126/science.272.5258.85
Abstract:
A high-throughput lithographic method with 25-nanometer resolution and smooth vertical sidewalls is proposed and demonstrated. The technique uses compression molding to create a thickness contrast pattern in a thin resist … >>>
A high-throughput lithographic method with 25-nanometer resolution and smooth vertical sidewalls is proposed and demonstrated. The technique uses compression molding to create a thickness contrast pattern in a thin resist film carried on a substrate, followed by anisotropic etching to transfer the pattern through the entire resist thickness. Metal patterns with a feature size of 25 nanometers and a period of 70 nanometers were fabricated with the use of resist templates created by imprint lithography in combination with a lift-off process. With further development, imprint lithography should allow fabrication of sub-10-nanometer structures and may become a commercially viable technique for manufacturing integrated circuits and other nanodevices. <<<
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25.
符毓 Yu (2023-03-30 12:59):
#paper doi:10.1016/j.joule.2020.07.014, Joule, 2020, Ultrasonic Scanning to Observe Wetting and “Unwetting” in Li-Ion Pouch Cells。锂电池的非破坏性检测方式较少见,X射线检测在电极材料结构、尺寸和热机械效应等有应用,但对于电解质和内部气体不敏感;本文主要探讨用超声方式进行检测的可行性
IF:38.600Q1 Joule, 2020. DOI: 10.1016/j.joule.2020.07.014
Abstract:
An ultrasonic imaging technique has been developed to investigate the internal changes of pouch cells nondestructively. The local ultrasonic transmittance of pouch cells has been measured and used for imaging … >>>
An ultrasonic imaging technique has been developed to investigate the internal changes of pouch cells nondestructively. The local ultrasonic transmittance of pouch cells has been measured and used for imaging with a new ultrasonic scanning machine designed and built in-house. The wetting process of the cells is clearly observed via such ultrasonic imaging techniques. Furthermore, ultrasonic transmission images of fresh cells and aged cells with different electrolytes and cycling conditions exhibit very different ultrasonic transmittance, which can be caused by electrolyte dry-out or “unwetting” due to cell swelling. The ultrasonic imaging technique is a very sensitive method to probe failure mechanisms in Li-ion pouch cells. <<<
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26.
符毓 Yu (2023-02-28 21:08):
#paper https://doi.org/10.1103/PhysRevApplied.6.021001 Physical Review Applied, 2016, Nonvolatile Memory Based on Nonlinear Magnetoelectric Effects。在过去的十年中,已经提出和探索了多种多铁性或磁电存储器的概念。此文提出了一种基于多铁性磁电系数 (α) 的多种状态来实现多级非易失性存储器的新原理。 这种多级磁电存储器保留了铁电随机存取存储器的所有优点,并克服了极化破坏性读取的缺点。
Abstract:
The magnetoelectric effects in multiferroics have a great potential in creating next-generation memory devices. We use an alternative concept of nonvolatile memory based, on a type of nonlinear magnetoelectric effects … >>>
The magnetoelectric effects in multiferroics have a great potential in creating next-generation memory devices. We use an alternative concept of nonvolatile memory based, on a type of nonlinear magnetoelectric effects showing a butterfly-shaped hysteresis loop. The principle is to utilize the states of the magnetoelectric coefficient, instead of magnetization, electric polarization, or resistance, to store binary information. Our experiments in a device made of the PMN-PT/Terfenol- D multiferroic heterostructure clearly demonstrate that the sign of the magnetoelectric coefficient can be repeatedly switched between positive and negative by applying electric fields, confirming the feasibility of this principle. This kind of nonvolatile memory has outstanding practical virtues such as simple structure, easy operation in writing and reading, low power, fast speed, and diverse materials available. <<<
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27.
符毓 Yu (2022-08-31 23:08):
#paper doi: 10.1525/cmr.2014.57.1.16 California Management Review, 2014, The Japanese software industry: what went wrong and what can we learn from it? 工业软件总是伴随工业制造一起发展,然而日本作为全球领先的先进制造大国,日产工业软件明显缺失。本文提出了几个解释: 1. 软件高端人才缺失:重硬件轻软件的文化加上软件过度外包和定制化,让软件人才“蓝领化” 2. 创业公司缺失:日本常见的企业形态是由老牌大型公司开拓新产品新业务,再分拆出子公司,新公司沿袭老公司的员工和制度,并不会挑战老公司;与之类似,当新供应商提供新产品或者服务的时候,客户通常会等待甚至支持原有供应商提供类似服务,而不是切换供应商
Abstract:
Recent findings indicate that the Japanese IT sector increasingly lags the U.S. IT sector in software innovation and that this underlies Japan's weakening competitive performance vis-à-vis U.S. IT. This article … >>>
Recent findings indicate that the Japanese IT sector increasingly lags the U.S. IT sector in software innovation and that this underlies Japan's weakening competitive performance vis-à-vis U.S. IT. This article explores alternative explanations for this outcome and analyzes what explains the Japanese software industry's trajectory. The sources are found in the late understanding of the transformational role of software and its value-creating potential as well as in the evolution of the industry's structure. Finally, this article considers what policy makers in other nations might learn from the Japanese experience in building a more vibrant software industry. <<<
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28.
符毓 Yu (2022-07-31 15:10):
#paper doi:10.1115/1.2429697 Journal of Mechanical Design, 2007, Review of Metamodeling Techniques in Support of Engineering Design Optimization 本文概述了Metamodeling及其在工程设计优化中的应用。根据设计工程师的需求分为:模型简化、设计边界定义、问题公式化和优化支持。文中还讨论了挑战和未来的发展。可以帮助在这一领域刚刚起步的学习人员,适合作为进一步学习的框架
Abstract:
Computation-intensive design problems are becoming increasingly common in manufacturing industries. The computation burden is often caused by expensive analysis and simulation processes in order to reach a comparable level of … >>>
Computation-intensive design problems are becoming increasingly common in manufacturing industries. The computation burden is often caused by expensive analysis and simulation processes in order to reach a comparable level of accuracy as physical testing data. To address such a challenge, approximation or metamodeling techniques are often used. Metamodeling techniques have been developed from many different disciplines including statistics, mathematics, computer science, and various engineering disciplines. These metamodels are initially developed as “surrogates” of the expensive simulation process in order to improve the overall computation efficiency. They are then found to be a valuable tool to support a wide scope of activities in modern engineering design, especially design optimization. This work reviews the state-of-the-art metamodel-based techniques from a practitioner’s perspective according to the role of metamodeling in supporting design optimization, including model approximation, design space exploration, problem formulation, and solving various types of optimization problems. Challenges and future development of metamodeling in support of engineering design is also analyzed and discussed. <<<
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