Spatial-temporal Patterns of Urban Parks’Effects on the Sentiments and Their Associated Factors Based on Social Media Data——a Case Study in Beijing

As the pivotal green space,urban parks play an important role in urban residents’daily activities.Thy can not only bring people physical health,but also can be more likely to elicit positive sentiment to those who visit them.Recently,social media big data has provided new data sources for sentiment analysis.However,there was limited researches that explored the connection between urban parks and individual’s sentiments.Therefore,this study firstly employed a pre-trained language model(BERT,Bidirectional Encoder Representations from Transformers)to calculate sentiment scores based on social media data.Secondly,this study analysed the relationship between urban parks and individual’s sentiment from both spatial and temporal perspectives.Finally,by utilizing structural equation model(SEM),we identified 13 factors and analyzed its degree of the influence.The research findings are listed as below:①It confirmed that individuals generally experienced positive sentiment with high sentiment scores in the majority of urban parks;②The urban park type showed an influence on sentiment scores.In this study,higher sentiment scores observed in Eco-parks,comprehensive parks,and historical parks;③The urban parks level showed low impact on sentiment scores.With distinctions observed mainly at level-3 and level-4;④Compared to internal factors in parks,the external infrastructure surround them exerted more significant impact on sentiment scores.For instance,number of bus and subway stations around urban parks led to higher sentiment scores,while scenic spots and restaurants had inverse result.This study provided a novel method to quantify the services of various urban parks,which can be served as inspiration for similar studies in other cities and countries,enhancing their park planning and management strategies.

Analysis of Influencing Factors on Fruit Consumption of Urban and Rural Residents in Beijing

In light of the rapid expansion of China s economy,there has been a notable shift in the consumption patterns of urban and rural residents.This is evident in the increased consumption of agricultural products,with fruit consumption representing a particularly pronounced trend.The 2023 Beijing Consumption Statistics indicate that demand for fruit is increasing,accompanied by heightened competition for quality and brands.The paper is based on research that examines the current situation of fruit consumption among urban and rural residents in Beijing.The results indicate that when urban and rural residents in Beijing purchase fruits,price is the most significant factor influencing fruit consumption.Taste,appearance,and variety are also considered to be important influencing factors,while the influence of factors such as fruit type,consumption pattern,and fruit brand is relatively minor.

Scientific Advances and Weather Services of the China Meteorological Administration’s National Forecasting Systems during the Beijing 2022 Winter Olympics

Since the Beijing 2022 Winter Olympics was the first Winter Olympics in history held in continental winter monsoon climate conditions across complex terrain areas,there is a deficiency of relevant research,operational techniques,and experience.This made providing meteorological services for this event particularly challenging.The China Meteorological Administration(CMA)Earth System Modeling and Prediction Centre,achieved breakthroughs in research on short-and medium-term deterministic and ensemble numerical predictions.Several key technologies crucial for precise winter weather services during the Winter Olympics were developed.A comprehensive framework,known as the Operational System for High-Precision Weather Forecasting for the Winter Olympics,was established.Some of these advancements represent the highest level of capabilities currently available in China.The meteorological service provided to the Beijing 2022 Games also exceeded previous Winter Olympic Games in both variety and quality.This included achievements such as the“100-meter level,minute level”downscaled spatiotemporal resolution and forecasts spanning 1 to 15 days.Around 30 new technologies and over 60 kinds of products that align with the requirements of the Winter Olympics Organizing Committee were developed,and many of these techniques have since been integrated into the CMA’s operational national forecasting systems.These accomplishments were facilitated by a dedicated weather forecasting and research initiative,in conjunction with the preexisting real-time operational forecasting systems of the CMA.This program represents one of the five subprograms of the WMO’s high-impact weather forecasting demonstration project(SMART2022),and continues to play an important role in their Regional Association(RA)II Research Development Project(Hangzhou RDP).Therefore,the research accomplishments and meteorological service experiences from this program will be carried forward into forthcoming highimpact weather forecasting activities.This article provides an overview and assessment of this program and the operational national forecasting systems.

Spatial patterns of the main trees in a plant micro-reserve constructed in the 2022 Beijing Winter Olympics mountainous competition zone

Several plant micro-reserves were established to preserve the vegetation in local mountain areas during the construction of the Yanqing competition zone of the 2022 Beijing Winter Olympics.The spatial patterns of the main species in one of the micro-reserves and the factors affecting these patterns were characterized in this study.The distribution of arbor species was found to be mostly aggregated,especially at fine scales(<5 m).Minor species were found to be more aggregated than the major species in each forest layer.The spatial patterns were found to be affected by habitat heterogeneity,intraspecific relationships,interspecific competition,and seed dispersal limitation.Habitat heterogeneity was found to affect large-scale spatial patterns,and its effects were observed throughout population development.Interspecific competition is another factor affecting the distribution of the species,and its effects were stronger during the later stages of population development.Habitat heterogeneity was found to affect competition among species and is key for species coexistence.Both these processes are affected by the seed dispersal limitation,and intraspecific relationships are a legacy of seed dispersal.The point patterns can be used as a tool for the initial assessment of the status of communities within micro-reserves.The consideration of these relationships in the development,management,and formulation of policies for micro-reserves in mountainous areas will facilitate the achievement of conservation goals.The careful consideration of habitat conditions when selecting sites for micro-reserves establishment can promote species conservation.

The Beijing International Peace Culture Foundation and UNESCO Jointly Hold the 10th "Peace Garden Peace Festival"

On September 21st,2023,the 10th"Peace Garden Peace Festival"and the 5th"Global Youth Photography Competition Ceremony"co-sponsored by UNESCO and the Beijing International Peace Culture Foundation were held at the Peace Garden Museum in Beijing.

Effectiveness of groundwater extraction in Beijing since the ingauration of the first phase of the South-to-North Water Diversion Project, China

This study assess the effectiveness of groundwater pressure extraction in Beijing since the opening of the first phase of the South-to-North Water Diversion Project,using survey and evaluation methods.Firstly,an analysis of water consumption structure and the usage of diverted river water in Beijing in recent years was conducted.Secondly,the volume of groundwater pressure extraction in Beijing after the 33 project's inauguration was examined,revealing a decrease from 1.96 billion m^(3) in 2014 to 1.35 billion m^(3) in 2020.The proportion of water supply reduced from 52.3%in 2014 to 33.3%in 2020,leading to an optimized water supply structure.By the end of 2020,groundwater pressure extraction in Beijing is estimated at 446 million m3,with a substantial reduction in over-exploitation of groundwater.Groundwater resources have been effectively replenished,and the strategic reserve capacity has been enhanced.Furthermore,this study evaluates the change in groundwater levels as an indicator of the effectiveness of pressure extraction.The declining trend of groundwater levels in Beijing has been effectively mitigated,and there has been a consistent rebound in groundwater levels over the past five years.

Chinese Unit Neighborhood Planning Strategies: A Case Study of Beijing

Chinese unit residential buildings can be understood as a flexible urban element, and theintroduction of its concept changed the urban structure of China. In this study, starting from the constraintsof contemporary planning contexts by Chinese historical units, the categories of historical Chinese unitresidential buildings were analyzed, and how spatial order and social ties has made Chinese units becomea common framework within which collective living takes place, how does the political strategy of theChinese government creates and constructs a particular form of spatial order in each example of Chineseunit residential buildings, and the impact on the daily life of the urban population were studied. Finally,how social relations, politics, and economic strategies confront and interact within Chinese unit residentialbuildings was explored.

Classification of Beijing Line 10 Subway Living Circle Based on Multi-source Big Data

In the first-tier cities,subway has become an important carrier and life focus of people’s daily travel activities.By studying the distribution of POIs of public service facilities around Metro Line 10,using GIS to quantitatively analyze the surrounding formats of subway stations,discussing the functional attributes of subway stations,and discussing the distribution of urban functions from a new perspective,this paper provided guidance and advice for the construction of service facilities.

Comparative Test on Spring Medium-sized Watermelon Varieties in Beijing

[Objectives]This study was conducted to select suitable medium-sized watermelon varieties for early spring cultivation in Beijing.[Methods]Seven watermelon varieties were collected,including Beinong Tianjiao 2,Beinong Tianjiao,Hongfuji,Yongfeng 1,Beinong Futian,Beinong Shijia,and Beinong Jinxiu,and Jingxin 2 was used as the control check(CK).The growth period,morphological traits,yield traits and fruit quality of the tested varieties were investigated.[Results]Beinong Tianjiao 2 had an earlier maturation stage,a fruit development period of 38 d and a total growth period of 118 d.It showed stable growth,with a single fruit weight of 7.56 kg,a fruit setting rate of 0.99 per plant,and a yield of 83076.9 kg/hm~2,which ranked,respectively,second,first,and second among all tested varieties,and were significantly superior to the CK.Furthermore,this variety had thin and tough peel,a bright red flesh color,high central sugar content,loose and crisp flesh,and a good taste.[Conclusions]It is preliminarily believed that it is suitable for early spring watermelon production in Beijing area.

Screening Test of Small Seedless Watermelon Varieties in Beijing Area

[Objectives]This study was conducted to select small seedless watermelon varieties with excellent quality and high yield suitable for planting in Beijing.[Methods]Under the conditions of facility cultivation in Beijing,a screening test was conducted on seven small seedless watermelon varieties for growth process,field traits,yield traits,fruit quality,and disease resistance.[Results]Varieties Mitong,Motong and Tianbao Xiaowuzi had a short growth period and relatively stable growth,and bore fruit easily,and their female flowers were closely spaced.Their yields exceeded 60000 kg/hm~2,ranking in the top three among all varieties.The fruit had a thin skin,a bright red flesh color,and a high mass fraction of soluble solids in the center.The flesh was tight or crispy,and tasted good.They also showed good disease resistance.Overall,they showed excellent comprehensive agronomic traits,and are thus suitable for facility cultivation in Beijing and its surrounding areas.[Conclusions]This study provides a theoretical basis for the upgrading of varieties and the increase in production and farmers'income in the suburbs of Beijing.

Recording the Sounds of Beijing

BEIJING-BASED British artist and curator Colin Chin­nery has spent many years collecting and preserv­ing sounds including pigeon whistles,jingling camel bells,and the cries of street vendors and peddlers in Beijing,among others.These unique soundscapes from the previous century carry the memories of a generation and reflect the changes in history and society.

Beijing Peaceland Foundation Holds Technical Exchanges and Training Programme of Rescue and Disaster Relief in Tanzania

From November 4th to 12th,2023,the Beijing Peaceland Foundation organised a technical exchanges and training Programme of rescue and disaster relief in Tanzania.The training included first aid,fire prevention,rescues in water areas and mountainous regions,drone application,etc.

The Central Axis of Beijing Described in Western Records

Many of the earliest Western adventurers to China elaborated in their writings about the symmetric structure of Beijing anchored on a central axis.KNOWN as a confluence of Eastern civilizations, ancient Beijing fascinated Europeans for its grand size and majestic buildings. At the core of the city is a 7.8-kilometer Central Axis that extends between the Drum Tower and Bell Tower in the north and the Yongding Gate in the south, along which stand many architectural icons that have been preserved to date.

Big Data Analysis and Optimization Suggestions of Cultural Facilities in Shijingshan District,Beijing City

With the successful holding of Beijing Winter Olympic Games in 2022,the planning and cultural services of Shijingshan District have been reviewed,but the systematic planning theory has not been fully applied.Through the big data research method,the location advantages and disadvantages of Shijingshan District were analyzed,and the distribution of its cultural facilities was defined.Feasible optimization schemes were proposed according to its advantages and disadvantages as well as the experience and conditions of the Winter Olympics.

Naming and Distribution of Traditional Mountain Settlements in Mentougou in Western Beijing

Settlement naming is an important carrier of settlement society and culture,carries regional culture,historical information,beliefs and other information,and is an important clue to understand regional culture and development characteristics.In this paper,the naming of traditional mountain settlements in Mentougou in western Beijing was studied through literature review and field research,and the correlation between the naming and distribution characteristics of the settlements was discussed to provide reference for the protection and construction of mountain settlements in Mentougou.

Constructing a Teaching Evaluation Model for the Course of Beijing World Cultural Heritage Based on Dynamic Assessment Theory

The rapid development of international tourism has led to an increasing demand for English professionals. In order to meet this demand, universities have placed greater emphasis on the quality and level of teaching in the courses of tourism English. This paper proposes a dynamic evaluation model for tourism English courses, based on the principles of dynamic assessment theory, such as process-orientation, evaluation-teaching integration, and multiple interactions. Taking the course of Beijing World Cultural Heritage as an example, the model is instantiated to demonstrate the feasibility of applying dynamic assessment theory to tourism English courses and this model helps to provide a reference for the evaluation methods of English courses.

Seasons in Beijing

My family moved to Beijing,the capital city of our country about a year ago,from Changsha City which is in the south of China.In the f irst few days,I was not quite used to the weather in Beijing.It was bitterly cold and dry outside.And the wind blew so hard that I felt my ears and hands were unconscious.

山银花茎叶化学成分及其抗炎活性研究

目的对山银花茎叶化学成分进行分离和结构鉴定,并进行体外抗炎活性评价。方法山银花茎叶80%甲醇提取物采用Diaion HP20SS、Sephadex LH-20、高速逆流色谱、反相半制备液相色谱等进行分离纯化,根据理化性质及波谱数据鉴定所得化合物的结构。通过测定单体化合物抑制LPS诱导小鼠巨噬细胞RAW264.7释放NO水平评价其抗炎活性。结果从山银花茎叶中分离得到13个化合物,分别鉴定为苄醇-O-β-D-吡喃葡萄糖-(1→6)-β-D-吡喃葡萄糖苷(1)、獐牙菜苷(2)、表断马钱子苷半缩醛内酯(3)、马钱子苷半缩醛内酯(4)、裂环马钱苷(5)、断氧化马钱苷(6)、裂马钱素二甲基乙缩醛(7)、绿原酸甲酯(8)、芹菜素-7-O-β-D-葡萄糖苷(9)、木犀草素-7-O-β-D-葡萄糖苷(10)、野漆树苷(11)、木犀草素-7-O-α-L-吡喃阿拉伯糖(1→6)-β-D-吡喃葡萄糖苷(12)、忍冬苷(13);化合物2~8、11~13可抑制LPS诱导RAW264.7细胞释放NO。结论化合物1首次从忍冬属植物中分离得到,化合物3、5、7、9、11~12首次从山银花茎叶中发现。化合物2~8、11~13具有一定的抗炎活性。

大型体育赛事语言景观的呈现特征、建构经验与提升策略——以北京2022年冬奥会为例

基于语言景观理论,通过录像观察对北京冬奥会语言景观的呈现特征进行考察并总结建构经验,进一步提出未来打造具有中国特色的赛事语言景观的提升策略。研究认为:首先,官方景观主导、载体类型多样、模态组合多元、语码布局规范是北京冬奥会语言景观的呈现特征。其次,自信规范的语言使用、特色文化的深度结合、丰富多样的呈现形式是北京冬奥会语言景观的建构经验。最后,未来应建立健全各类赛事语言景观的标准规范,促进文化交流的理解与认同;充分挖掘办赛所在地的优秀文化,打造具有本土特色的语言景观;应用现代高科技手段,拓宽语言景观呈现的渠道与形式。

京津冀高质量协同:发展历程、取得成效与未来展望

京津冀协同发展是重大国家战略。经过10年来的发展,京津冀协同发展已迈入高质量协同发展阶段,在科技创新、空间布局、生态保护、对外开放、民生领域等方面取得一系列显著成效,但也存在创新转化能力不足、产业转移承接断层、“过密过疏”现象突出、生态联合治理及生态补偿机制有待完善等挑战。面向中国式现代化建设的先行区、示范区这一目标任务,应进一步完善顶层制度设计和空间功能布局,以新质生产力为协同发展的新引擎,让数据要素成为协同发展的新动能,推动京津冀协同发展迈向更高质量、更高水平。