Experiments with 87Rb: Towards Co-trapping 88Sr19F and 87Rb

Polar molecules can interact via the anisotropic and long-range electric dipole-dipole interaction owing to their large permanent electric dipole moments. Being able to study them in the ultracold temperature regime and at high density would allow us to study strongly correlated physics, and expand the toolbox for quantum computation. In order to reduce the temperature of SrF beyond the sub-Doppler temperature ($\sim10$ $\mu$K) achieved with laser cooling by polarization gradients, we hope to implement sympathetic cooling of SrF and Rb. Pursuing this direction requires advancements in experimental capabilities. This thesis describes the experimental efforts towards co-trapping SrF and Rb, which is the starting point of studies of atom-molecule collisions in the ultracold temperature regime. The thesis reports on some technical aspects of conservative trapping: a high-power circuit was developed to facilitate current switching in the context of magnetic quadrupole traps, and depths of optical dipole traps were estimated in anticipation of complexities due to a strongly state-dependent trapping potential. The thesis also details the construction and performance of an apparatus for laser cooling and trapping Rb. The apparatus consists of a 2D MOT that functions as a high-flux beam source of Rb, and an RF MOT. The 2D MOT produces a flux on the order of 10$^{9}$ atoms/s. With 500-ms loading, the RF MOT is able to collect $\sim$10$^9$ atoms at temperatures $\sim$1 mK. Compared to the molecule number typical in an SrF MOT, the atom number in the Rb RF MOT is 10$^4$ higher, suggesting good prospects of observing atom-molecule collisions in a subsequent conservative trap. In addition, we established a comparison between the dc and RF MOT of Rb in the same apparatus. We found that in an RF MOT, the number is significantly lower and the temperature significantly higher, while the loading time constant and lifetime are similar to those of a dc MOT

Research on Staff loyalty of Creative Industries Enterprise from the Perspective of stakeholder

Abstract: This article from the perspective of stakeholders, learned theory of stakeholders, creative industries, staff loyalty and staff loyalty level; established index system for evaluating employees loyalty of creative industries; through the fuzzy comprehensive evaluation method and examples of Wuxi enterprises of the creative industries, did quantification and applied research to index system. Key words: Stakeholder; Creative Industries; Staff loyalt

How to Unleash the Power of Large Language Models for Few-shot Relation Extraction?

Scaling language models have revolutionized widespread NLP tasks, yet little comprehensively explored few-shot relation extraction with large language models. In this paper, we investigate principal methodologies, in-context learning and data generation, for few-shot relation extraction via GPT-3.5 through exhaustive experiments. To enhance few-shot performance, we further propose task-related instructions and schema-constrained data generation. We observe that in-context learning can achieve performance on par with previous prompt learning approaches, and data generation with the large language model can boost previous solutions to obtain new state-of-the-art few-shot results on four widely-studied relation extraction datasets. We hope our work can inspire future research for the capabilities of large language models in few-shot relation extraction. Code is available in https://github.com/zjunlp/DeepKE/tree/main/example/llm.Comment: SustaiNLP Workshop@ACL 202

The Impact of Policy Intensity on Overcapacity in Low-Carbon Energy Industry: Evidence From Photovoltaic Firms

This study evaluates the impact of policy intensity on overcapacity using 55 listed photovoltaic (PV) firms from 2011 to 2019 in China. We divide PV industrial chain into three segments, which are upstream, midstream, and downstream. Results show that China’s PV industry is diminishing returns to scale with low level of capacity utilization (20%). The enhancement of policy intensity can significantly promote overcapacity, but its impact varies in different policies and different enterprises. Fiscal subsidy has the largest positive effect in promoting overcapacity, followed by tax preference and land support. For three segments of PV industrial chain, fiscal subsidy, land support, and tax preference play a significant role in promoting overcapacity in each segment; the increase in financial support exacerbates overcapacity in midstream. The present study also tests the effectiveness of an important PV policy posed by the Chinese government in 2013. The results show that the policy is inefficient in the short term. Nevertheless, it promotes the development of PV industry in the long term. It takes a long time to reduce positive effect of policies on overcapacity. This study provides a guide for the government to make comprehensive use of different policies

Discovery of Liu Pingguo Inscription in Kuča and Modern Xinjiang

The paper gives an account of the location and preservation of the Liu Pingguo inscription of Kuča dated the Eastern Han Dynasty, and makes new researches from two respects on it. First, according to the recently-discovered inscriptive writings and related inspection records in Chinese and foreign languages, the paper reviews the inscription’s discovery and preservation in late Qing Dynasty and confirms that it was firstly discovered by Shi Buhua in the 5th year of Guangxu era (1879). Second, considering the historical background of modern Xinjiang, the author proposes that the discovery of the Liu Pingguo inscription is related with Zuo Zongtang’s strategy for retaking the occupied region of Yili by Russia. In fact, the inscription was an unexpected finding when Zhang Yao, Zuo Zongtang’s man, led his troops to make a breakthrough advancing from Baicheng area to Yili