949 research outputs found
Cultural Differences between China and America in the International Negotiations under the Cultural Dimensions
As the booming development of the world economy, it is inevitable for all countries to talk with each other and dialogues among different countries have become a new normal. As the two largest economies in the world, China and the United States hold talks more frequently. On the surface, it seems that the talks are just a psychological fight or game among the participating negotiators. However, it is a fact that the negotiations are about a collision between different cultures. Due to cultural differences, different performances have been made during the process of talks and have affected the quality and efficiency of the dialogue to a great degree. Based on the cultural dimensions, this paper will focus on studying the styles of Chinese and American negotiators on expression, the value of time, decision making and the final goal in the negotiations from the perspective of the dimensions, individualism-collectivism dimension and long-term and short-term index dimension, so as to provide some suggestions for the Chinese negotiators and provide a reference for achieving mutually beneficial international dialogues
A class of monotonicity-preserving variable-step discretizations for Volterra integral equations with completely monotone kernels
The time continuous Volterra equations valued in with completely
monotone kernels have two basic monotone properties. The first is that any two
solution curves do not intersect if the given signal has a monotone property.
The second is that the solutions to the autonomous equations are monotone. The
so-called CM-preserving schemes (Comm. Math. Sci., 2021,19(5), 1301-1336) have
been shown to preserve these properties but they are restricted to uniform
meshes. In this work, through the an analogue of the convolution on nonuniform
meshes, we introduce the concept of ``right quasi-completely monotone'' (R-QCM)
kernels for nonuniform meshes, which is a generalization of the CM-preserving
schemes. We prove that the discrete solutions preserve these two monotone
properties if the discretized kernel satisfies R-QCM property. Technically, we
highly rely on the so-called resolvent kernels to achieve this
Identifying Conspiracy Theories News based on Event Relation Graph
Conspiracy theories, as a type of misinformation, are narratives that
explains an event or situation in an irrational or malicious manner. While most
previous work examined conspiracy theory in social media short texts, limited
attention was put on such misinformation in long news documents. In this paper,
we aim to identify whether a news article contains conspiracy theories. We
observe that a conspiracy story can be made up by mixing uncorrelated events
together, or by presenting an unusual distribution of relations between events.
Achieving a contextualized understanding of events in a story is essential for
detecting conspiracy theories. Thus, we propose to incorporate an event
relation graph for each article, in which events are nodes, and four common
types of event relations, coreference, temporal, causal, and subevent
relations, are considered as edges. Then, we integrate the event relation graph
into conspiracy theory identification in two ways: an event-aware language
model is developed to augment the basic language model with the knowledge of
events and event relations via soft labels; further, a heterogeneous graph
attention network is designed to derive a graph embedding based on hard labels.
Experiments on a large benchmark dataset show that our approach based on event
relation graph improves both precision and recall of conspiracy theory
identification, and generalizes well for new unseen media sources.Comment: Accepted to EMNLP 2023 Finding
Discourse Structures Guided Fine-grained Propaganda Identification
Propaganda is a form of deceptive narratives that instigate or mislead the
public, usually with a political purpose. In this paper, we aim to identify
propaganda in political news at two fine-grained levels: sentence-level and
token-level. We observe that propaganda content is more likely to be embedded
in sentences that attribute causality or assert contrast to nearby sentences,
as well as seen in opinionated evaluation, speculation and discussions of
future expectation. Hence, we propose to incorporate both local and global
discourse structures for propaganda discovery and construct two teacher models
for identifying PDTB-style discourse relations between nearby sentences and
common discourse roles of sentences in a news article respectively. We further
devise two methods to incorporate the two types of discourse structures for
propaganda identification by either using teacher predicted probabilities as
additional features or soliciting guidance in a knowledge distillation
framework. Experiments on the benchmark dataset demonstrate that leveraging
guidance from discourse structures can significantly improve both precision and
recall of propaganda content identification.Comment: Accepted to EMNLP 202
Antiaging Effect of Inula britannica
The antiaging effect of Inula britannica flower total flavonoids (IBFTF) on aging mice induced by D-galactose and its mechanism was examined in this study. From the results, the biochemical indexes and histological analysis of skin tissues showed that IBFTF could effectively improve the antioxidant enzyme activity of the aging mice, enhance the activities of superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px) of skin tissue, and decrease the malondialdehyde (MDA) content. Besides, IBFTF could maintain the skin collagen, hydroxyproline (Hyp), dermal thickness, and moisture content. Meanwhile, IBFTF could significantly reduce the number of cells arrested in G0/G1 phase, and from the point of view of protein and mRNA expression level in skin tissue, IBFTF could significantly increase the expression of Sirt1 and CyclinD1 but decrease the expression of p16 and p21, and its effect was not less than that of the well-known vitamin E (VE). Overall, these results seem to be implying that IBFTF is a potential natural anti-skin aging agent with great antioxidant ability
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