Abstract: Geometric error significantly influences the performance and manufacturing quality of machine tools, especially in high-precision applications. The ...

Abstract: This paper deals with the kinematic calibration of a two-axis over-constrained solar tracker. In an over-constrained mechanism, it is difficult to derive ...

GLASTONBURY, Conn., Sept. 9, 2025 /PRNewswire/ -- Symmetry Partners, a leading investment manager, today launched the Symmetry Panoramic Sector MomentumTM ETF (Ticker: SMOM), designed to provide ...

China is all set to stage what it calls its largest-ever military parade on Victory Day on Wednesday (Sept 3), using the occasion both to commemorate Japan’s surrender in World War II and to showcase ...

China held a massive military parade in Beijing on Wednesday where President Xi Jinping was joined by the leaders of Russia, North Korea, Iran and 23 other countries in a dramatic show of strength and ...

The leaders of China, Russia, Iran and North Korea – a quartet described by Western policy analysts as the "axis of upheaval" – have met in public for the first time today at a huge military parade in ...

The political leaders of China, North Korea and Russia stood together at a military parade earlier today where they sent a startling message to the West. The lavish event was one of the largest ...

China convened, Russia amplified, and India participated. The Shanghai Cooperation Organization (SCO) summit in Tianjin this week was more than a regional meeting. It was a stage-managed display of ...

Chinese President Xi Jinping will be joined by Russia’s Vladimir Putin, North Korean leader Kim Jong Un and Iran’s Masoud Pezeshkian in Beijing for the military parade on Wednesday (September 3) to ...

Vladimir Putin, Kim Jong Un join Xi Jinping in Beijing Milestone meeting marks first appearance together in public Closer ties may change military calculus in the Pacific Beijing to hold massive ...

Chinese President Xi Jinping hosted his Russian and North Korean counterparts together for the first time Tuesday, signaling solidarity among countries isolated by the West over their involvement in ...

KIM Jong-un has made the 20-hour trip to China on board his heavily armoured train as he prepares for the first ever "Axis of Evil" summit. The North Korean dictator is making a rare trip outside of ...