User Preference Aware Hierarchical Edge-User Cooperative Caching Strategy

The emergence of various new services has posed a huge challenge to the existing network architecture.To improve the network delay and backhaul pressure,caching popular contents at the edge of network has been considered as a feasible scheme.However,how to efficiently utilize the limited caching resources to cache diverse contents has been confirmed as a tough problem in the past decade.In this paper,considering the time-varying user requests and the heterogeneous content sizes,a user preference aware hierarchical cooperative caching strategy in edge-user caching architecture is proposed.We divide the caching strategy into three phases,that is,the content placement,the content delivery and the content update.In the content placement phase,a cooperative content placement algorithm for local content popularity is designed to cache contents proactively.In the content delivery phase,a cooperative delivery algorithm is proposed to deliver the cached contents.In the content update phase,a content update algorithm is proposed according to the popularity of the contents.Finally,the proposed caching strategy is validated using the MovieLens dataset,and the results reveal that the proposed strategy improves the delay performance by at least 35.3%compared with the other three benchmark strategies.

National Medical Products Administration Releasing Popular Science Article about Using Sunscreen“Spray”Cosmetics Safely

On Apr.15th,2024,National Medical Products Administration released a popular science article about using sunscreen“spray”cosmetics safely,reminding consumers to care about how to use sunscreen“spray”cosmetics correctly.According to the article,common sunscreen“spray”in the market can be divided into spray type and aerosol type,and incorrect use of them will cause the risk of inhalation or flammability.To use sunscreen“spray”cosmetics correctly,one should try to avoid inhaling“spray”;put the sunscreen“spray”in a cool,dry and ventilated environment not exposed to direct sunlight,and avoid using them on wounds,redness&swelling,eczema or other abnormal places of the skin.

The Research on the Paths of Popular Science Education about Myopia Prevention and Control among College Students in the Context of Shifting the Focus Forward

Currently, the number of myopic people in China has reached as high as 600 million, and it shows a trend of “early onset, high incidence, and a high degree of severity”. The issue of myopia among children and adolescents has attracted widespread attention from all sectors of society. Comprehensive myopia prevention and control efforts have been launched nationwide. Popular science education, vision screening, and improving visual environments are effective measures for preventing myopia. However, among the target audience for comprehensive myopia prevention and control, the preschool children group has been neglected, and the work of myopia prevention and control for this group has been significantly weakened and marginalized. Due to insufficient awareness of prevention and control, the hyperopia reserve in the preschool children group is being continuously depleted, leading to the early onset of myopia. In light of this situation, the focus of myopia prevention and control needs to shift forward, and it is worth exploring and pondering how college students with a background in optometry can develop entertaining and engaging popular science education materials and methods.

Popularization of first-aid education in China:Challenges and progress

In China,there are 544,000 sudden deaths each year.Cardiac arrest is one of the most common causes of sudden death,and 70%of cardiac arrests occur outside the hospital.[1,2]However,fewer than 1%of bystanders at cardiac arrest deaths in China are well-trained and capable of administering first aid.[3]Therefore,it is urgent to popularize first-aid knowledge in the Chinese population.

The Realization of Popularity in the Geopark Interpretation System

By analyzing the existing research achievements on the geopark interpretation system,this article has brought up a new explanation of the system from the aspect of easy-understood principle.We try to present our tourists with geoheritage,natural and cultural resources by various medium,so that people could know more about geosciences during the tour.In the end,geoheritage protection is enhanced by such

The Thinking on Further Impelling Hubei Meteorological Science Popularization Work under New Situation

In this paper,new situation faced by meteorological science popularization work of China is analyzed. Based on analyzing the challenges faced by Hubei meteorological science popularization work,the suggestions of Hubei meteorological science popularization work during the ＂ 13 th five-year＂ period are proposed from four aspects： further optimize operation mechanism of meteorological science popularization work,and improve work efficiency; combine full-time and part-time teams,and promote the fighting capacity of the science popularization team; adapt to the demand of multimedia publicity,and expand the connotation of popular science creation; build brand,and create a stereoscopic science popularization network.

Construction of Popular Science Tourism Evaluation Index System for Geoparks and Empirical Analysis

Popular science tourism is a new tourism mode, and geopark scenic area is an important carrier of popular science tourism. It is the premise and foundation for the popular science tourism development of geoparks to establish a scientific evaluation index system and evaluation model. On the basis of analyzing relevant evaluation models, this paper explored the evaluation system and model of geopark popular science tourism in following steps. First, establish the index system. Based on the theory method, frequency method, and expert consultation method, this paper established the popular science tourism evaluation index system of geopark scenic area. The evaluation index system includes 3 primary indexes, 8 secondary indexes and 30 tertiary indexes. Second, define index weight and scoring standards. Index weights were defined using Analytic Hierarchy Process(AHP), the measuring method of each index and the scoring standards were specified. Third, evaluation model and grade. The evaluation model of popular science tourism development was constructed, and the evaluation results were classified into 4 grades. Fourth, empirical study. The evaluation model was applied to measure and investigate popular science tourism of Henan Yuntain Mountain World Geopark, and the final score was 7.619, indicating a higher evaluation grade of popular science tourism of the park.

Extending Science Popularization Base Construction and Promoting Meteorological Science Popularization Ability

In recent years,Kaifeng Meteorological Bureau and Kaifeng Municipal Meteorological Society seriously think how to strengthen the construction of science popularization base,and take below measures improving the influence of ＂ national science popularization education base＂ and further increasing the propaganda of meteorological popular science knowledge. Firstly,launching periodical meteorological science popularization into campus,village and community,and holding meteorological science forum; secondly,cooperating with municipal science association and Science and Technology Bureau,and jointly issuing the related documents of carrying out the propaganda of meteorological science popularization;thirdly,co-constructing campus weather station and meteorological science popularization demonstration community; fourthly,setting up special meteorological science lecture and report meeting; fifthly,integrating meteorological science with studies of Chinese ancient civilization based on innovation. In the form of recreation and loved by the masses,the propaganda of meteorological popular science knowledge is done well,and people recognizing,understanding,grasping and applying meteorological science is improved,thereby reaching the target of decreasing the damages of meteorological disaster to social economy and human life and property.

Research on Training Base’s Expansion of Scientific Popularization Function in Higher Vocational Colleges

Based on the needs of regional industrial development and technical personnel training,the training base for technical skill as the core function has effectively enhanced the development of vocational education.However,at present,the training base in vocational colleges is mainly applied for students’teaching,and the overall utilization rate is low.It is of great importance in the rational application of software and hardware resources onto the training base to widely carry out popular science activities.The importance of training base construction and scientific popularization is expounded.On this basis,the research team took the S&T racing training base as a case to study its expandable scientific popularization function.The practice results show that using the resources of the training base to carry out scientific popularization activities can greatly improve teenagers’interest in automobile technology.More training bases in vocational colleges should expand the function of scientific popularization.

“Digital earth” in support of an online oceanic educational public service and popularization

According to the initial vision of ＂digital earth＂ （DE）, the public should constitute a significant proportion of its users. However, to date, most of the studies and applications have focused on science, the private sec- tor and government. A DE-supported online oceanic educational public service and popularization system, iOcean, is studied. First, the vision for the public＇s engagement with ＂digital ocean＂ is described： an analysis is presented from four aspects, i.e., the space dimension, the time dimension, the state dimension and its relationship with human beings. Second, the technical framework of iOcean is discussed, including data updating and model computing, the data, the function, and the application layers. Third, two key technolo- gies are studied in detail that will enable the construction of iOcean. More than half a million public viewers have used the current version＇s website. Practical demonstrations show that iOcean can bring virtual oceans to web browsers and desktops and construct a bridge between government departments and the general public.

POPULARIZATION STUDY ON THE CHEMICAL CONTROL OF COLEOPHORA DAHURICA FLKV. BY ULV SPRAYING MALATHIOR

The control of Coleophora dahurica Flkv. by ULV spraying rare oil of malathior was popularized in lnner Mongolia Daxing’an Mountains in 1992-1993. The control area was 32744.3hm2, which was 98.2% of the suitable control area in Inner Mongolia Daxing’an Mountains and 75%of the suitable area in Inner Mongolia respectively. Dosage was 1125 g/hm2. Control effectiveness was above 95%, the larvae density decreased from 52.5 to 0.94 per 50cm sample twig and direct economical benefit was 3,935,420 Chinese yuan.

Farmers'participatory selection of new rice varieties to boost production under temperate agro-ecosystems

In mountain agriculture, early maturity, high grain yield and high biomass are generally considered as farmer preferred traits in rice crop in addition to a multiple set of traits collectively responsible for variety adoption or rejection. The varieties tested only on station evaluation trials without taking the data from the farmers＇ fields by not including farmers as partners for variety evaluation are the reasons of low adoption of varieties. In this regard, a participatory methodology was followed by conducting a number of participatory trials in the farmers＇ fields during 2012-2014 in six districts of Kashmir Valley, India. The mother trials in the farmers＇ fields showed that the test variety SKUA-408 consistently and significantly out yielded Jhelum and farmers＇ variety followed by Shalimar rice 3 （SR3）. The other released varieties like SR1 and SR2 could not perform nicely in the farmers＇ fields because of late maturity. After making the t-test comparison of baby trials （paired plots）, the mean yield superiority of test varieties SKUA-408, SR3, and SKUA-403 over farmers＇ variety during 2013 was around 23, 25, and 22％, respectively, whereas in 2014 the respective yield advantage was recorded as 16.3, 17.7, and 16.2％. In all districts, SKUA-408 and SR3 were significantly preferred by farmers （P〈0.05 or 0.01） in terms of pre-harvest traits namely, tillering ability and general phenotypic acceptability, early maturity and biomass and for post-harvest traits such as general cooking quality besides, the intention to grow the variety for next year. Adoption and dissemination of SKUA-408 began in 2014 from the farm-saved seed in the form of farmer to farmer seed exchange. Farmers are the end users of a variety so the decision by the farmers while judging the variety should be taken into consideration to make the varietal choice more effective for its widespread adoption.

An Automated System to Predict Popular Cybersecurity News Using Document Embeddings

The substantial competition among the news industries puts editors under the pressure of posting news articleswhich are likely to gain more user attention. Anticipating the popularity of news articles can help the editorial teamsin making decisions about posting a news article. Article similarity extracted from the articles posted within a smallperiod of time is found to be a useful feature in existing popularity prediction approaches. This work proposesa new approach to estimate the popularity of news articles by adding semantics in the article similarity basedapproach of popularity estimation. A semantically enriched model is proposed which estimates news popularity bymeasuring cosine similarity between document embeddings of the news articles. Word2vec model has been used togenerate distributed representations of the news content. In this work, we define popularity as the number of timesa news article is posted on different websites. We collect data from different websites that post news concerning thedomain of cybersecurity and estimate the popularity of cybersecurity news. The proposed approach is comparedwith different models and it is shown that it outperforms the other models.

Research on the Planning of Medicinal Botanical Gardens Based on the Theme of Science Popularization Education

The functions of medicinal botanical gardens are introduced firstly,and then the application status and planning principles of medicinal botanical gardens based on the theme of science popularization education are analyzed.Moreover,a typical application case is analyzed and summarized.Constructing a scientific medicinal botanical garden is conducive to increasing people's understanding of medicinal plants,and also meets the requirements of current national policies,thereby generating greater economic and social benefits.

Reconstruction and Regeneration of Mountain Landscapes: A Case Study of Science Popularization and Education Hall of Jiangxi Wuyi Mountain Nature Reserve

Mountain landscape is a significant landscape type among all natural landscape resources, design of constructions in mountain landscapes should take multiple factors into consideration. Taking Science Popularization and Education Hall of Jiangxi Wuyi Mountain Nature Reserve for example, this paper explored the architectural design in mountain landscapes from the perspectives of spatial form, facade design, color materials and design experience, in order to achieve the integration of landscape constructions and natural environment.

Improving the Negative List System

The Negative list is an indispensable part of free trade zone constructions.The success of Shanghai’s Free Trade Experiment zone has a remarkable feature that the deep promotion of pre-establishment national treatment and negative list system.Popular trend Since the first edition of the"negative list"came out in the Shanghai Free Trade Zone in 2013,it has become a popular trend in

A Measurement Study on Resource Popularity and Swarm Evolution of BitTorrent System

Analyzing and modeling of the BitTorrent (BT) resource popularity and swarm evolution is important for better understanding current BT system and designing accurate BT simulators. Although lots of measurement studies on BT almost cover each important aspect, little work reflects the recent development of BT system. In this paper, we develop a hybrid measurement system incorporating both active and passive approaches. By exploiting DHT (Distribute Hash Table) and PEX (Peer Exchange) protocols, we collect more extensive information compared to prior measurement systems. Based on the measurement results, we study the resource popularity and swarm evolution with different population in minute/ hour/day scales, and discover that: 1) the resources in BT system appear obvious unbalanced distribution and hotspot phenomenon, in that 74.6% torrents have no more than 1000 peers;2) The lifetime of torrents can be divided into a fast growing stage, a dramatically shrinking stage, a sustaining stage and a slowly fading out stage in terms of swarm population;3) Users’ interest and diurnal periodicity are the main factors that influence the swarm evolution. The former dominates the first two stages, while the latter is decisive in the third stage. We raise an improved peer arrival rate model to describe the variation of the swarm population. Comparison results show that our model outperforms the state-of-the-art approach according to root mean square error and correlation coefficient.

基于双因素理论的公共卫生人员科普工作意愿及满意度分析

目的调查上海市公共卫生人员参与健康科普工作现状,分析科普工作满意度及影响因素,提出人员激励措施的改进建议,进一步提升公共卫生机构健康科普能力。方法对上海市医疗卫生机构中414名公共卫生从业人员进行问卷调查,对4家区疾病预防控制中心共计16人进行半结构式访谈,分析受调查者参与科普工作意愿以及对科普工作保障机制和激励措施的满意度。结果80.2%的受调查者表示参加过健康科普相关工作,89.9%表示未来愿意参加相关工作。372名有意愿从事健康科普工作的受调查者总体满意度得分为(3.83±0.96)分,满意度得分最低的3项是工作待遇(3.07±1.17)分、工作回报(3.50±1.17)分、工作环境/支持(3.56±0.79)分,管理与领导维度得分最高,为(4.14±0.86)分。不同年龄、不同职称级别人群总体满意度差异有统计学意义(P<0.05)。结论公共卫生人员参与健康科普工作总体满意度一般,公共卫生从业人员科普参与度有待提高。科普工作报酬收益和工作经费是制约公共卫生人员从事科普工作的主要因素。应建立以效果为导向的科普工作评价机制,重视不同年龄层人员的差异化激励措施。

ATA Model of Health Emergency Science Popularization in China: A Pilot Study

A recent novel coronavirus(COVID-19)outbreak has started since December 2019 in Wuhan,Hubei province,People’s Republic of China and has progressively expanded to various parts of China.Based on those practical problems of emergency science popularization works in the current epidemic situation,this article,from the perspective of accuracy,timeliness and acceptability of emergency science popularization,proposes that the professional science popularization knowledge should be popularized,rumor should be refuted in a timely manner,and accurate science popularization strategies should be taken for different science preference,so to provide countermeasures and guidance for problems in emergency science popularization.

International Popularization of Beijing Culture: A Cross-cultural Perspective Based on an Investigation of Beijing-based International Students' Identity with Beijing Culture

To more vigorously promote Beijing culture internationally is bothan essential link in the strategy to turn Beijing into a cultural center and an international exchange center. This promotion would also serve as a critical step to advance the cultural development and internationalization of Beijing. As an important group of foreigners living in Beijing, foreign students can play a unique part in upgrading Beijing culture' s international influence.These students look at Beijing culture from a cross-cultural standpoint and thus can offer a vital reference for the international promotion effort. Using a combination of questionnaires and interviews, the author surveyed international students in seven Beijing universities that have a relatively high number of foreign students. Based on this firsthand data, this paper analyzes the Beijing-based international students' identity with Beijing culture, reflects on the experiences and inadequacies in the current promotion of Beijing culture, and makes relevant suggestions regarding the inadequacies.