Delivery services have undergone technological advancements, with robots now directly delivering packages to recipients. While these robots are designed for efficient functionality, they have not been specifically designed for interactions with humans. Building on the premise that incorporating human-like characteristics into a robot has the potential to positively impact technology acceptance, this study explores human reactions to a robot characterized with facial expressions. The findings indicate a correlation between anthropomorphic features and the observed responses.

This work identifies 18 foundational challenges in assuring the alignment and safety of large language models (LLMs). These challenges are organized into three different categories: scientific understanding of LLMs, development and deployment methods, and sociotechnical challenges. Based on the identified challenges, we pose $200+$ concrete research questions.

This article proposes a multi habitat bio-mimetic robot, named as GuLu XuanYuan.It combines all common types of mobile robots, namely humanoid MIP, unmanned ground vehicle, and unmanned aerial vehicle. These 3 modals imitate human, bird, and reptile, separately. As a transformer, GuLu XuanYuan can transform from one modal to another. Transforming function integrates the specialized abilities of three robots into the same machine body. This simplification approach helps to reduce the total number of required robots. From another perspective, the deformation function is equivalent to creating more economic value.

Iterative learning control (ILC) is a method for reducing system tracking or estimation errors over multiple iterations by using information from past iterations. The disturbance observer (DOB) is used to estimate and mitigate disturbances within the system, while the system is being affected by them. ILC enhances system performance by introducing a feedforward signal in each iteration. However, its effectiveness may diminish if the conditions change during the iterations. On the other hand, although DOB effectively mitigates the effects of new disturbances, it cannot entirely eliminate them as it operates reactively. Therefore, neither ILC nor DOB alone can ensure sufficient robustness in challenging scenarios. This study focuses on the simultaneous utilization of ILC and DOB to enhance system robustness. The proposed methodology specifically targets dynamically different linearized systems performing repetitive tasks. The systems share similar forms but differ in dynamics (e.g. sizes, masses, and controllers). Consequently, the design of learning filters must account for these differences in dynamics. To validate the approach, the study establishes a theoretical framework for designing learning filters in conjunction with DOB. The validity of the framework is then confirmed through numerical studies and experimental tests conducted on unmanned aerial vehicles (UAVs). Although UAVs are nonlinear systems, the study employs a linearized controller as they operate in proximity to the hover condition. A video introduction of this paper is available via this link: https://zh.engr.tamu.edu/wp-content/uploads/sites/310/2024/02/ILCDOB_v3f.mp4.

Navigation of UAVs in challenging environments like tunnels or mines, where it is not possible to use GNSS methods to self-localize, illumination may be uneven or nonexistent, and wall features are likely to be scarce, is a complex task, especially if the navigation has to be done at high speed. In this paper we propose a novel proof-of-concept navigation technique for UAVs based on the use of LiDAR information through the joint use of geometric and machine-learning algorithms. The perceived information is processed by a deep neural network to establish the yaw of the UAV with respect to the tunnel's longitudinal axis, in order to adjust the direction of navigation. Additionally, a geometric method is used to compute the safest location inside the tunnel (i.e. the one that maximizes the distance to the closest obstacle). This information proves to be sufficient for simple yet effective navigation in straight and curved tunnels.

This year, the U.S. military carried out strikes against Iranian forces and allied militias in Syria and Iraq in response to a drone attack in Jordan that killed three American soldiers. And in 2020, the United States killed a top Iranian commander, Maj. Prime Minister Rishi Sunak confirmed that Britain had helped defend Israel against the Iranian attack, saying that Britain's air force had shot down "a number of Iranian attack drones" and would now work with allies to de-escalate tensions. "What we now need is for calm heads to prevail," Mr. Sunak told the BBC on Sunday. Rear Adm. Daniel Hagari, Israel's chief military spokesman, said that Israel had intercepted most of the 200 drones, cruise missiles and ballistic missiles launched by Iran with "some assistance" from its allies.

Iran launched a large aerial attack on Israel and the territory it controls starting late on Saturday, firing at least 300 drones and missiles. It is the first such direct attack launched from Iranian territory after decades of shadow warfare between the two countries. The assault was in response to a recent strike on a building in the Iranian Embassy complex in Syria that killed several of Iran's top commanders. Here's a look at what we know about the Iranian attack this weekend and its implications: Air raid sirens sounded in Israel and the West Bank overnight, signaling the start of an attack that had been anticipated for days. In the event, almost all of the missiles and drones were intercepted, the Israeli military said on Sunday.

Washington, DC – The response from US President Joe Biden's administration to Iran's historic missile and drone attack on Israel has been two-fold: Washington has re-upped its pledge to always stand by its "ironclad" ally Israel, while also appealing to the government of Benjamin Netanyahu not to take further action that could drag the region into wider war. The days ahead will show if those two options are compatible, or if the two governments' priorities are on collision course, analysts told Al Jazeera. In the short term, the Iranian attack is a coup for both Israel and its backers in the US: From their perspective, it offers renewed justification for military support to Israel while weakening the world's focus on alleged abuses committed in Gaza in seven months of war, according to Trita Parsi, the executive vice president of the Washington-based Quincy Institute. But defiance from Netanyahu to US calls for restraint could find the Biden administration further hamstrung by its political and ideological commitments to Israel, which could eventually drag Washington into a wider war, he added. "The Israelis have been told by Biden to take this as a win and stop here," Parsi told Al Jazeera.

Sen. Fetterman said he disagreed with President Biden's decision to keep the U.S. out of any offensive response to the Iran attacks on Sunday during an interview with CNN. Sen. John Fetterman, D-Pa., said he didn't agree with President Biden on his stance that the U.S. wouldn't join in an offensive operation against Iran during an interview on Sunday, saying he would never "capitulate to the fringe" of his party. CNN host Jake Tapper asked Fetterman to respond to reports that Biden told Israeli Prime Minister Benjamin Netanyahu that the U.S. wouldn't participate in any offensive operations against Iran during a conversation on Saturday. "Do you think that's the right call or should direct U.S. military action, as some of your colleagues in the Senate are suggesting, should that be on the table?" he asked. "I don't agree with that, I just think we should follow and have Israel's back in the situation. I don't agree with the president. I'm proud to stand with him and campaign for him and vote for him," he responded.

The response by Israel and other nations to Iran's aerial attack kept the majority of its drones and missiles from landing in Israel, ensuring they caused only light damage and a handful of injuries, Israeli officials said. An unexpected -- and for some, unwelcome -- actor played a role in Israel's defense: Jordan, the Arab kingdom next door. Jordan fought four wars with Israel between 1948 and 1973 before signing a peace treaty in 1994. Its population is heavily made up of Palestinians, and their descendants, who were barred from returning to their homes by Israel after the 1948 war that followed the establishment of the Jewish state. Jordan's involvement was welcomed by older Israelis who remembered when Jordan would shell Israel.