Understanding the Relationship Between Shrinking Cities and Land Prices:Spatial Pattern,Effectiveness,and Policy Implications

Urban shrinkage has emerged as a widespread phenomenon globally and has a significant impact on land,particularly in terms of land use and price.This study focuses on 2851 county-level cities in China in 2005–2018(excluding Hong Kong,Macao,Taiwan,and‘no data’areas in Qinhai-Tibet Plateau)as the fundamental units of analysis.By employing nighttime light(NTL)data to identify shrinking cities,the propensity score matching(PSM)model was used to quantitatively examine the impact of shrinking cities on land prices,and evaluate the magnitude of this influence.The findings demonstrate the following:1)there were 613 shrinking cities in China,with moderate shrinkage being the most prevalent and severe shrinkage being the least.2)Regional disparities are evident in the spatial distribution of shrinking cities,especially in areas with diverse terrain.3)The spatial pattern of land price exhibits a significant correlated to the economic and administrative levels.4)Shrinking cities significantly negatively impact on the overall land price(ATT=–0.1241,P<0.05).However,the extent of the effect varies significantly among different spatial regions.This study contributes novel insights into the investigation of land prices and shrinking cities,ultimately serving as a foundation for government efforts to promote the sustainable development of urban areas.

Generating Sets of the Complete Semigroup of Binary Relations Defined by Semilattices of the Class Σ8(X, 5)

In this article, we study generating sets of the complete semigroups of binary relations defined by X-semilattices of unions of the class Σ8(X, 5). Found uniquely irreducible generating set for the given semigroups and when X is finite set formulas for calculating the number of elements in generating sets are derived.

Tunable dispersion relations manipulated by strain in skyrmion-based magnonic crystals

We theoretically investigate the propagation characteristics of spin waves in skyrmion-based magnonic crystals. It is found that the dispersion relation can be manipulated by strains through magneto-elastic coupling. Especially, the allowed bands and forbidden bands in dispersion relations shift to higher frequency with strain changing from compressive to tensile,while shifting to lower frequency with strain changing from tensile to compressive. We also confirm that the spin wave with specific frequency can pass the magnonic crystal or be blocked by tuning the strains. The result provides an advanced platform for studying the tunable skyrmion-based spin wave devices.

Enhancing Data Forwarding Efficiency in SIoT with Multidimensional Social Relations

Effective data communication is a crucial aspect of the Social Internet of Things(SIoT)and continues to be a significant research focus.This paper proposes a data forwarding algorithm based on Multidimensional Social Relations(MSRR)in SIoT to solve this problem.The proposed algorithm separates message forwarding into intra-and cross-community forwarding by analyzing interest traits and social connections among nodes.Three new metrics are defined:the intensity of node social relationships,node activity,and community connectivity.Within the community,messages are sent by determining which node is most similar to the sender by weighing the strength of social connections and node activity.When a node performs cross-community forwarding,the message is forwarded to the most reasonable relay community by measuring the node activity and the connection between communities.The proposed algorithm was compared to three existing routing algorithms in simulation experiments.Results indicate that the proposed algorithmsubstantially improves message delivery efficiency while lessening network overhead and enhancing connectivity and coordination in the SIoT context.

Explanation of Two Important Empirical Relations for Galaxies

The phenomenon of “missing mass” in galaxies has triggered new theoretical exploration, forming a competition between dark matter assumption, modified Newtonian dynamics and modified gravity. Over the past forty years, various versions of the modified scenario have been proposed to simulate the effects of missing mass. These schemes replace the dynamic effect of dark matter by introducing some tiny extra force terms in the dynamic equations. Such extra forces have mainly interactions on large scales of galaxies, such as fitting the Tully-Fisher relation or asymptotically flat rotation curves. The discussion in this paper shows that the evidence of taking the modified schemes as fundamental theory is still insufficient. In this paper, we display a system of simplified galactic dynamical equations derived from weak field and low-speed approximations of Einstein field equations, and then we use it to discuss two important empirical relations in galactic dynamics, namely the Faber-Jackson relation and Tully-Fisher relation, as well as the related fundamental plane. These discussions provide a reference scheme for improving the dispersion of the empirical relations, and also provide a theoretical foundation to analyze the properties of dark matter and galactic structures.

馆藏青铜器上的巴蜀符号研究与鉴赏

巴蜀符号主要发现在东周时期巴蜀青铜兵器、青铜工具和青铜印章上。文章依据不同载体,分析了巴蜀符号的特征与演变。不同功能的器物上的巴蜀符号类型差异明显,当时人们使用这些符号时有明确的区分,说明它们的性质、功能应该有所区别。通过对馆藏巴蜀符号青铜器的年代、符号类型、组合规律等进行梳理,以求进一步丰富长江文明、巴蜀文化内容。在战国巴蜀地区,无论巴人还是蜀人都采用一种较原始的符号记事方法,史学界称其为巴蜀符号。虽然,关于其性质还有着较多争议,但这些神秘的符号对认知中华文化的区域类型特点及巴蜀文化交流与融合情况无疑具有重要的作用。重庆中国三峡博物馆近年来系统整理了馆藏文物上的巴蜀符号,现将部分成果公布,在供大家鉴赏同时,希望增强学界对巴蜀符号的关注与理解。

Influence of slope position and aspect on the vegetation attributes and treewater relations in forests of the central Himalayas

While the need for understanding the effects of topographical factors on forest structure and function is well recognized,comprehensive studies are scarce.This study evaluates the effect of slope aspect and slope position on water relations and forest attributes across six forest types occurring between 400 m and 2600 m altitude in the Central Himalaya(27°-38°N).We found that predawn tree water potential and soil water potential were generally higher on moist north slope aspect(-0.78±0.05 MPa and-3.34±0.18 MPa,respectively)than dry south slope aspect(-0.82±0.18 MPa and-3.77±0.18 MPa,respectively).Across six different forests,these values were higher at hill base(-0.71±0.06 MPa and-2.77±0.19 MPa,tree predawn water potential and soil water potential,respectively)than other topographical positions.The favorable effect of north aspect and hill base was also observed in maintaining soil water and tree water potential during the dry season.Vegetation attributes,such as species richness,unique species and plant density were also generally higher on north slope and hill base than southern aspect and lowest at hill top.Across forest types,the hill base provided shelter to 46 unique species,compared to 16-18 at the other positions,thus emphasizing its importance as refugia for species to survive climate change induced perturbations.The favorable conditions of hill base position not only contribute to increase in alpha diversity,but also to extended species distributional range.

巴蜀传统年画兴盛的文化生态研究——对绵竹、梁平传统年画的考察

绵竹、梁平木版年画是巴蜀年画的代表。通过对这两个地方年画产生和发展的文化生态基础和条件进行深入的调查和研究,可以看到在巴蜀木版年画产生和发展的过程中,当地的社会文化、自然资源、产业状况对于年画产生和发展所起的重要作用。通过这一调查研究,我们可以更清楚地认识到在文化生态条件已发生重大变迁的当下,应如何建构适应木版年画保护、传承与发展的文化生态环境,找到有效促进巴蜀木版年画保护、传承与发展的新路径,使巴蜀木版年画得到高质量的保护、传承与发展。

Interpersonal Perception in Virtual Groups: Examining Homophily, Identification and Individual Attraction Using Social Relations Model in Network

With the penetration of the Internet, virtual groups have become more and more popular. The reliability and accuracy of interpersonal perception in the virtual environment is an intriguing issue. Using the Social relations model (SRM) [1], this paper investigates interpersonal perception in virtual groups from a multilevel perspective. In particular, it examines the following three areas: homophily, identification, and individual attraction, and explores how much of these directional and dyadic relational evaluations can be attributed to the effect of the actor, the partner, and the relationship.

Solving Arithmetic Word Problems of Entailing Deep Implicit Relations by Qualia Syntax-Semantic Model

Solving arithmetic word problems that entail deep implicit relations is still a challenging problem.However,significant progress has been made in solving Arithmetic Word Problems(AWP)over the past six decades.This paper proposes to discover deep implicit relations by qualia inference to solve Arithmetic Word Problems entailing Deep Implicit Relations(DIR-AWP),such as entailing commonsense or subject-domain knowledge involved in the problem-solving process.This paper proposes to take three steps to solve DIR-AWPs,in which the first three steps are used to conduct the qualia inference process.The first step uses the prepared set of qualia-quantity models to identify qualia scenes from the explicit relations extracted by the Syntax-Semantic(S2)method from the given problem.The second step adds missing entities and deep implicit relations in order using the identified qualia scenes and the qualia-quantity models,respectively.The third step distills the relations for solving the given problem by pruning the spare branches of the qualia dependency graph of all the acquired relations.The research contributes to the field by presenting a comprehensive approach combining explicit and implicit knowledge to enhance reasoning abilities.The experimental results on Math23K demonstrate hat the proposed algorithm is superior to the baseline algorithms in solving AWPs requiring deep implicit relations.

A Testing Time for U.S.-China Relations

While the unipolar world is still orbiting in the sphere of influence of Anglo-American elite and some of their allies,the rest of the world is marching in a different direction.THE year 2022 proved to be a turbulent one for U.S.-China relations.

Picture Fuzzy Relations over Picture Fuzzy Sets

Nowadays, picture fuzzy set theory is a flourishing field in mathematics with uncertainty by incorporating the concept of positive, negative and neutral membership degrees of an object. A traditional crisp relation represents the satisfaction or the dissatisfaction of relationship, connection or correspondence between the objects of two or more sets. However, there are some problems that can’t be solved through classical relationships, such as the relationship between two objects being vague. In those situations, picture fuzzy relation over picture fuzzy sets is an important and powerful concept which is suitable for describing correspondences between two vague objects. It represents the strength of association of the elements of picture fuzzy sets. It plays an important role in picture fuzzy modeling, inference and control system and also has important applications in relational databases, approximate reasoning, preference modeling, medical diagnosis, etc. In this article, we define picture fuzzy relations over picture fuzzy sets, including some other fundamental definitions with illustrations. The max-min and min-max compositions of picture fuzzy relations are defined in the light of picture fuzzy sets and discussed some properties related to them. The reflexivity, symmetry and transitivity of a picture fuzzy relation are described over a picture fuzzy set. Finally, various properties are explored related to the picture fuzzy relations over a picture fuzzy set.

巴蜀文化旅游走廊非物质文化遗产空间分异及影响因素

以巴蜀文化旅游走廊1200处国家级与省(市)级非物质文化遗产为研究对象,综合运用最邻近点指数、核密度分析和地理探测器的方法探究其空间分布和影响因素。研究表明,巴蜀文化旅游走廊非遗呈现明显的成渝“双核”空间集聚特征,其中传统音乐类、传统舞蹈类、曲艺类、体育、游艺与杂技类、传统美术类、传统技艺类、医药类非遗呈显著集聚,民间文学类与传统戏剧类非遗随机分布,民俗类非遗近随机分布;人文因素对非遗分布的影响比自然地理因素更显著,其中,文化因子造成的影响最强,地形地貌影响最弱,影响因子的交互作用进一步解释了非遗分布的特征。基于结果分析,提出构建巴蜀文化旅游走廊相关建议,积极引导社会经济政策在非物质文化遗产开发上的调整,有助于提升巴蜀文化旅游走廊的发展质量,构建合理的巴蜀文化旅游走廊。

重庆民办高校传扬巴蜀文化的定位、困局及破解路径

文章首先阐述了重庆民办高校传扬巴蜀文化的定位和困局,然后论述了重庆民办高校传扬巴蜀文化的破解路径,包括文化自塑,提升民办高校内涵;战略联盟,提高民办高校协同自主力;应用驱动,引领巴蜀文化创新发展。

A Study of the Effects of Employee Engagement on Job Satisfaction:Mediating Effect of Labor Relations Climate

With the rapid advancement of new technologies and the transformation of the economic model on a global scale,enterprises are facing unprecedented changes in the external environment and more diversified demands from employees.Therefore,it is essential for enterprises to bolster employee engagement by enhancing employees’job satisfaction,building a stable and harmonious internal climate,and adapting to the dynamic,complex external environment.This study analyzes the positive effects of employee engagement on job satisfaction,explores the mediating effect of labor relations climate in the relationship between the two,and proposes corresponding practical countermeasures and suggestions.

Kant and Confucius:Moral Ethics Behind Western and Eastern Approaches to International Relations

International relations(IR)as a discipline is currently experiencing a crisis that may be viewed as a protest against the Euro-centric theories in humanities and the Western view on global politics,some of the most vocal opponents coming from Asia,with China at its core.This paper aims to compare the principles that depict moral ethics serving as a base for political idealism in the West and the East with Kant’s views as a foundation for Western idealism and Confucius’s ethical theory as a ground for an ideal society from the Asian perspective.The comparison is conducted along the following axes:the notions of autonomy,will,and freedom,initially developed to depict an ideal world order in the Kantian view.As a result of this comparison,the common feature between the two types of ethics,namely the strive for human dignity,becomes apparent.In conclusion,the paper suggests that researchers should concentrate on common features in the two philosophies instead of juxtaposing their apparent differences,which politically reflect the opposition of individualism and collectivism.Stress on human dignity shall become a unifying factor in modern international politics instead.

A Joint Entity Relation Extraction Model Based on Relation Semantic Template Automatically Constructed

The joint entity relation extraction model which integrates the semantic information of relation is favored by relevant researchers because of its effectiveness in solving the overlapping of entities,and the method of defining the semantic template of relation manually is particularly prominent in the extraction effect because it can obtain the deep semantic information of relation.However,this method has some problems,such as relying on expert experience and poor portability.Inspired by the rule-based entity relation extraction method,this paper proposes a joint entity relation extraction model based on a relation semantic template automatically constructed,which is abbreviated as RSTAC.This model refines the extraction rules of relation semantic templates from relation corpus through dependency parsing and realizes the automatic construction of relation semantic templates.Based on the relation semantic template,the process of relation classification and triplet extraction is constrained,and finally,the entity relation triplet is obtained.The experimental results on the three major Chinese datasets of DuIE,SanWen,and FinRE showthat the RSTAC model successfully obtains rich deep semantics of relation,improves the extraction effect of entity relation triples,and the F1 scores are increased by an average of 0.96% compared with classical joint extraction models such as CasRel,TPLinker,and RFBFN.

The Revolution’s Result: The Change of Cuban-American Relations During the 1959-1962 Period

Cuban-American relations have become one of the most attractive bilateral relations since the Cold War era.With historical methods and international relations theory,this paper aims to discuss the Cuban Revolution and the change of Cuban-American relations through two issues.One is the Cuban Revolution and the gradual rupture of traditional Cuban-American ties,demonstrating that since Castro’s radical reform of nationalization deeply violated the economic interests of the United States,conflicts and confrontations had already been incurred.At the same time,with Moscow’s intervention,the Cuban Revolution gradually became complicated and sensitive to deal with from Washington’s perspective.The other one is the evolution of confrontation between the Castro revolutionary regime and the United States government during the 1959-1962 period.The Bay of Pigs Invasion rapidly caused political tensions in Cuban-American relations,and soon,the Cuban Missile Crisis institutionalized the escalating confrontation and deeply worsened bilateral relations.As a result,the Castro regime had no choice but to rely on Soviet assistance to maintain a delicate balance with the United States for several decades,which indicated the tragedy of the small nations’destiny.

“第二届巴蜀文化与南方丝绸之路学术研讨会”综述

2023年8月24日至26日,“第二届巴蜀文化与南方丝绸之路学术研讨会”在四川成都举行。本次研讨会由四川师范大学文学院、《四川师范大学学报(社会科学版)》编辑部、四川师范大学巴蜀文化研究中心共同主办,四川师范大学文学院承办。会议开幕式由四川师范大学文学院房锐教授主持,四川师范大学副校长王川教授、四川师范大学文学院副院长谭光辉教授.

巴蜀地区水口塔的形制特征与文化内涵初探

巴蜀地区传统聚落多因水而建,因水而兴,且水口处常见古塔矗立。尽管其形制、名称各有不同,但几乎无一例外地成为当地聚落文化景观的重要标志物。在广泛挖掘和整理历史文献的基础上,作者通过实地踏勘调研了部分有代表性的水口塔,分析概括了主要的形制特征及其背后蕴含的丰富文化内涵,揭示出水口塔作为重要地域性景观建筑在当代城乡文化遗产保护中的重要文化景观意义。