Maintenance,Repair,and Reinforcement Measures for Dilapidated Small and Medium-Sized Bridges

The paper initiates by exploring the importance of maintaining,repairing,and reinforcing bridges.Subsequently,it delves into routine and preventative maintenance measures tailored for small to medium-sized bridges.Additionally,the paper examines repair and reinforcement techniques specifically designed for deteriorated small and medium-sized bridges,encompassing methods for fortifying both the bridge foundation and upper and lower structures.Lastly,the paper proposes suggestions aimed at fostering discussions and exchanges on the development of maintenance and repair processes for deteriorated small and medium-sized bridges.

Enucleation combined with guided bone regeneration in small and medium-sized odontogenic jaw cysts

BACKGROUND The odontogenic jaw cyst is a cavity containing liquid,semifluid or gaseous components,with the development of the disease.In recent years,with the rapid development of oral materials and the transformation of treatment of jaw cysts,more options are available for treatment of postoperative bone defect of jaw cysts.Guided bone regeneration(GBR)places biomaterials in the bone defect,and then uses biofilm to separate the proliferative soft tissue and the slow-growing bone tissue to maintain the space for bone regeneration,which is widely used in the field of implantology.AIM To observe the clinical effect of GBR in repairing bone defect after enucleation of small and medium-sized odontogenic jaw cysts.METHODS From June 2018 to September 2020,13 patients(7 male,6 female)with odontogenic jaw cysts were treated in the Department of Oral Surgery,Ninth People’s Hospital,Shanghai Jiao Tong University School of Medicine.Adults without hypertension,heart disease,diabetes or other systemic diseases were selected.The diagnosis was based on the final pathological results:11 cases were diagnosed as apical cysts,one as primordial cyst,and one as dentigerous cyst.The lesions were located in the maxilla in seven cases,and in the mandible in six cases.All cases were treated with the same method of enucleation combined with GBR.RESULTS Three to four months after the operation,the boundary between the implant site and the surrounding normal stroma was not obvious in patients with small-sized odontogenic jaw cysts.The patients with tooth defects were treated with implant after 6 mo.For the patients with medium-sized odontogenic jaw cysts,the density of the center of the implant area was close to the normal mass at 6 mo after surgery,and there was a clear boundary between the periphery of the implant area and the normal mass.The boundary between the periphery of the implant area and the normal mass was blurred at 8-9 mo after surgery.Patients with tooth defects were treated with implants at>6 mo after the operation.CONCLUSION Enucleation combined with guided bone regeneration in small and medium-sized odontogenic jaw cysts can shorten the time of osteogenesis,increase the amount of new bone formation,reduce complications,and improve quality of life.

Mechanism of Impact of Entrepreneurial Spirit on the Development of Small and Medium-sized Private Enterprises in China

As a necessary factor for a successful business,entrepreneurial spirit is an important means for enterprises to survive in the unstable environment of fierce competition. Under the circumstance of mass entrepreneurship and innovation,a large number of small and medium-sized private enterprises have emerged in all walks of life in China. This paper examines the differences in the definition of entrepreneurial spirit by different scholars,the influence of Chinese entrepreneurship on the development of small and medium-sized private enterprises,the origin of the spirit of private entrepreneurs with Chinese characteristics,and the disadvantages of the spirit of small and medium-sized private entrepreneurs in China. It is necessary to further improve entrepreneurial spirit to contribute to the development of small and medium-sized private enterprises and help China to build the national economic system.

Analysis on Profit Quality of Small and Medium-sized Agricultural Enterprises:A Case Study of YM Industrial Co.,Ltd in Guang'an City of Sichuan Province

For a long time, under the influence of system and environment and other factors, some small and medium-sized agricultural enterprises in China only seek growth of profit in quantity, but neglect the growth of profit in quality, leading to low profit quality. This study reasonably defines the concept of profit quality of small and medium-sized agricultural enterprises, and expounds general characteristics of high quality profit. On the basis of general factors influencing profit quality of enterprises, it builds indicator system for evaluating the profit quality of small and medium-sized agricultural enterprises. Also, it conducts an empirical analysis on profit quality of Chinese small and medium-sized enterprises with YM Industrial Co., Ltd in Guang'an City of Sichuan Province as an example.

Study on Electronic Commerce Maturity of Small and Medium-sized Agricultural Enterprises

This article advances the concept of electronic commerce maturity of small and medium-sized agricultural enterprises,and establishes the indicator system of electronic commerce maturity of small and medium-sized agricultural enterprises.This indicator system includes 4 first-level indicators(infrastructure,transaction process,operation management,and transaction safety),which are divided into 11 second-level indicators(hardware equipment,computer network,e-procurement,logistics distribution,supply chain management,customer relationship management,and payment security).We use analytic hierarchy process(AHP) to determine the weight of indicator at all levels,and establish fuzzy comprehensive evaluation mathematical model of electronic commerce maturity of small and medium-sized agricultural enterprises.Finally,through examples,we verify the rationality and reliability of evaluation method of electronic commerce maturity of small and medium-sized agricultural enterprises combining analytic hierarchy process(AHP) and fuzzy comprehensive evaluation.

A Study on Business Succession in Small and Medium-Sized Chinese Enterprises

The survival and development of SMEs (small and medium enterprises) is an important issue for the Chinese economy. In particular, business succession in SMEs is a persistent issue. Business succession involves selection of a successor, asset inheritance, transfer of management rights, accumulation of business connections and technology succession, and soforth. This all requires smooth execution of a business succession plan. However, many SMEs do not have a business succession plan, nor are they preparing one. Our task is to explore the reasons these preparations are not being made. Here, the purpose of our research is to get a picture of the status of preparations for business succession in SMEs in China, and the actual circumstances of succession, based on the results of a fact-finding survey of Chinese SMEs, and at the same time bring to the surface the primary factors which influence preparations and plans. The results of the analysis shed light on the status of business succession preparations, successor’s awareness of issues, decision making, and so on. This survey highlights the awareness of business succession among business managers.

Pooling Wisdom and Strength, Promoting Win-Win Cooperation——Keynote Speech at the Chinese-German Small and Medium-sized Entrepreneurs Dialogue

In this warm spring season, I am happy to join all of you for the Chinese-German Small and Medium-sized Entrepreneurs (SME) Dialogue jointly sponsored by CAFIU and the Adenauer Foundation of Germany. We all know that the past year of 2012 was the 40 th anniversary of the establishing of

Influence of Internet Finance on the Financing of Small and Medium-Sized Enterprises in China

Small and medium-sized enterprises greatly promote the economic progress and growth of national tax revenue as well as realize the escalation of career opportunities.However,as these enterprises are relatively small scale and have low capacity to face and resist risks in addition to China's flawed financial credit system,there are many difficulties faced by these enterprises in terms of financing to achieve their own development and progress.Recently,owing to the progress of internet information,especially the expansion of its application in the financial field,it has opened up a way for handling the financing difficulties faced by small and medium-sized enterprises.According to the specific financing situation of small and mediumsized enterprises in China,this study analyzes the impact of internet finance on the financing of small and medium-sized enterprises in China and formulates strategies to effectively deal with the financing difficulties of small and medium-sized enterprises in China,thus promoting the sustainable progress of small and medium-sized enterprises.

Problems and Countermeasures of International Trade Financing of Small and Medium-Sized Enterprises in China

Small and medium-sized enterprises are the foundation of China's national economy,and they are important forces to promote economic and social development.They play an irreplaceable role in promoting scientific and technological progress,increasing social employment,expanding foreign trade,and other aspects in which they have become an important part of China's socialist market economy.Based on the research background of international trade financing,this paper analyzes the problems existing in the international trade fmancing of small and medium-sized enterprises in China to put forward countermeasures and suggestions,hoping to help these small and medium-sized enterprises solve the financing problem so as to achieve a healthy development in the international trade market environment.

Investigation and Analysis of the Current Situation of New Media Marketing in Small and Medium-sized Enterprises

With China’s entry into WTO, China’s small and medium-sized enterprises are facing unprecedented opportunities and challenges. The integration of the world economy has brought opportunities for the internationalization and industrialization of small and medium-sized enterprises. However, due to the lack of systematic marketing strategies, the development of small and medium-sized enterprises is beset with difficulties. From the perspective of marketing strategy, this paper analyzes the marketing strategy problems faced by small and medium-sized enterprises. From four aspects: marketing concept, marketing team, marketing strategy and marketing model 4P, this paper puts forward some countermeasures and suggestions for improving the marketing benefits of small and medium-sized enterprises.

Deep Learning Enabled Financial Crisis Prediction Model for Small-Medium Sized Industries

Recently,data science techniques utilize artificial intelligence(AI)techniques who start and run small and medium-sized enterprises(SMEs)to take an influence and grow their businesses.For SMEs,owing to the inexistence of consistent data and other features,evaluating credit risks is difficult and costly.On the other hand,it becomes necessary to design efficient models for predicting business failures orfinancial crises of SMEs.Various data classification approaches forfinancial crisis prediction(FCP)have been presented for predicting thefinancial status of the organization by the use of past data.A major process involved in the design of FCP is the choice of required features for enhanced classifier out-comes.With this motivation,this paper focuses on the design of an optimal deep learning-basedfinancial crisis prediction(ODL-FCP)model for SMEs.The proposed ODL-FCP technique incorporates two phases:Archimedes optimization algorithm based feature selection(AOA-FS)algorithm and optimal deep convo-lution neural network with long short term memory(CNN-LSTM)based data classification.The ODL-FCP technique involves a sailfish optimization(SFO)algorithm for the hyperparameter optimization of the CNN-LSTM method.The performance validation of the ODL-FCP technique takes place using a benchmarkfinancial dataset and the outcomes are inspected in terms of various metrics.The experimental results highlighted that the proposed ODL-FCP technique has out-performed the other techniques.

深圳机场小型兽类组成、多样性及时空变化

野生动物与飞机撞击对全球航空业造成日益增加的风险和经济损失(DeVault et al.,2011;Blackwell et al.,2013;Metz et al.,2020)。据中国民用航空局(CAAC)统计《鸟击飞机信息分析报告》显示,鸟击事故从2007年的326起增加到2016年的4618起,造成严重的安全风险和经济损失(Hu et al.,2020)。

中小机场运营与补贴之间的互动探究

基于2013-2021年国内73个中小机场的面板数据,运用DEA(数据包络分析)模型计算机场运营效率,并对面板数据进行回归分析。研究发现,2013-2019年国内中小机场的运营效率呈上升趋势,但2020-2021年受新冠肺炎疫情影响,运营效率显著下降。进一步研究表明,机场补贴对中小机场的运营效率具有显著正向促进作用。虽然机场效率不能直接影响补贴,但机场业务量对补贴有正向显著影响。因此,提出加强对中小机场的政策支持、注重提高机场业务量、建立应对突发事件的机制等措施,以促进中小机场的可持续发展。

Analysis of the Financing Mode of Small and Medium-Sized Enterprises Under the DC/EP Platform Based on a Comparison with the Traditional Bank Financing Mode

As a legal currency with the credit endorsement of the Chinese government,DC/EP has many advantages and special characteristics.Based on the application of DC/EP in the financing of small-and medium-sized enterprises(SMEs),this paper studies the optimal financing decisions of SMEs under both the traditional financing mode and the DC/EP financing mode.Considering the construction and use costs of DC/EP and the role of DC/EP credit traceability in improving mortgage rates,this paper explores the feasible range for SMEs to select DC/EP financing.It is found that mortgage rates affect the returns of SMEs when they take on loans;under different credit strategies,the pledge rate set by the bank will affect the financing willingness of SMEs.The participants had different optimal mortgage rates to optimize the returns of borrowers and banks.High-quality SMEs are more willing to use the DC/EP platform for financing.With the increase in default costs,banks will be more inclined to use DC/EP,while enterprises will be inclined to utilize the traditional financing mode.Through the comparative analysis of the two financing modes,the default cost range that neither banks nor borrowers are willing to use DC/EP is found.This study provides theoretical support and management inspiration for scientific decision-making to solve the financing problems of SMEs by using DC/EP.

支线机场航站楼的地域性设计探究——以阿勒泰雪都机场为例

机场航站楼作为城市的名片之一,不但行使陆空置换的交通建筑功能,其作为“城市门厅”的作用更是被寄予厚望,亟须打造成为符合地方审美、具有本土特色的地标性建筑。文章从地域性视角切入,以阿勒泰雪都机场航站楼设计为例,通过现场调研与问卷调查,总结出该航站楼的地域性设计要点,并探究旅客对于航站楼地域性设计的真实评价。将新时代背景下航站楼的设计策略总结为:兼顾地域性与时代性、从知名度高的角度切入、多方面多层次的设计表达,以期为支线机场的地域性设计提供一定的参考与借鉴。

小型不停航机场跑道分段施工工艺研究

小型不停航机场跑道施工时由于机场不停航,使得施工工程量大、施工周期长、每日有效作业时间短、施工强度要求更大,所需的人员、机械和材料也相应增加。同时,机场飞行区场道不停航施工的安全管理也是施工安全、质量及进度的关键。传统的不停航施工组织模式存在施工效率低、资源投入大、安全风险大的难题。所罗门群岛蒙达机场跑道升级项目为了解决这一问题,在施工过程中详细划分施工区段,采用创新式的不停航施工方案,并解决了当地多雨对施工质量的影响。项目不仅施工质量优良,还减少了人员设备的投入,节约了资金。

A Novel Lifecycle Model for Web-based Application Development in Small and Medium Enterprises

Software engineering＇s lifecycle models havc proven to be very important for traditional software development. However, can these models be applied to the development of Web-based applications as well？ In recent years, Web-based applications have become more and more complicated and a lot of efforts have been placed on introducing new technologies such as J2EE, PhP, and .NET, etc., which have been universally accepted as the development technologies for Web-based applications. However, there is no universally accepted process model for the development of Web-based applications. Moreover, shaping the process model for small medium-sized enterprises （SMEs）, which have limited resources, has been relatively neglected. Based on our previous work, this paper presents an expanded lifecycle process model for the development of Web-based applications in SMEs. It consists of three sets of processes, i.e., requirement processes, development processes, and evolution processes. Particularly, the post-delivery evolution processes are important to SMEs to develop and maintain quality web applications with limited resources and time.

On the‘ENGO+focal firm’governance strategies of pollution of small and medium suppliers

Presently,the environmental pollution problem,especially that of the small and medium-sized enterprises,has become a bottleneck restricting the high-quality development of China’s economy.It is imperative to accelerate the construction of a collaborative governance system with multiple subject participation.The behavior modes of Environmental Non-governmental Organizations(ENGOs),a key player in environmental care,in collaborating with core enterprises to control pollution from small and medium-sized suppliers should be explored.Therefore,we constructed a collaborative governance system consisting of ENGOs,focal firms and small and medium-sized suppliers.Then a two-stage game model was established to analyze the strategies of the governance system.Specifically,we studied the collaborative green cooperation strategy and antagonistic pressure supervision strategy between ENGOs and focal firms,analyzed factors influencing the strategic choices of each subject,and gave the advantages of the cooperation strategies through further comparisons.The results showed that:Under the cooperation strategy,ENGOs provided knowledge of environmental protection to the focal firms,then both the audit efforts of focal firms and the environmental protection efforts of small and medium-sized suppliers were effectively improved.Since ENGOs could not fully obtain the pollution information of small and medium-sized suppliers or accurately trace it from their downstream focal firms,it was difficult to drive the supply chain’s endogenous governance by this external monitoring of ENGOs,making the effect of pressure supervision strategy limited.The effectiveness of green cooperation strategy was positively correlated with the knowledge absorption capacity of focal firms,the unit product revenue,and the focal firms'violation penalties for small and medium-sized suppliers.When ENGOs'violation penalties for small and medium-sized suppliers were higher,or the reputation loss of focal firms was higher,more unfavorable conditions of green cooperation strategy could be achieved.Accordingly,ENGOs should choose to cooperate with focal firms with strong knowledge absorption ability and high profit per product;focal firms should learn environmental protection knowledge to improve the screening standards and review capabilities,and promote the achievement of green cooperation strategy conditions by strengthening active information disclosure;the government should promote the collaboration between ENGOs and focal firms by issuing environmental guidelines.

复杂机场道面外来异物高精度实时检测算法

机场道面外来物(foreign object debris,FOD)具有类型多样、形状各异、背景复杂、目标弱小等特点,并且严重影响飞行器安全,故其高精度实时检测具有重要意义。针对以上问题,提出基于超分辨率特征金字塔并带有纹理信息提取模块的FOD实时检测网络(FOD real-time detection network,FOD-RDN)。该网络采用Darknet-53作为主干网提取特征,通过超分辨率特征金字塔对形状各异的小目标进行检测,并设计了纹理信息提取模块降低复杂背景的干扰。同时采用双通道YOLO检测器和基于CIoU的损失函数,进一步提升网络对FOD的检测精度和速度。实验结果表明,本文算法在满足实时性要求的情况下,在FOD数据集上整体检测精度达到了91.8%,相比于主流目标检测网络在FOD目标检测方面具有更好的检测效果。

中小民航机场政策性亏损补贴研究——以甘肃省为例

中小民航机场是我国机场体系的重要组成部分,目前中小民航机场亏损严重,合理的补贴政策是我国民航业快速、健康发展的前提之一。以甘肃省中小民航机场为对象,首先梳理政策性亏损的概念及补贴理论,其次分析6个中小民航机场的运营状况,再依据会计学和经济学相关理论,在传统补贴测算基础上,考虑收入成本因素、旅客吞吐量因素以及外部环境因素,运用多元线性回归构建政策性亏损补贴测算模型,与传统模型进行对比分析。结果表明,政策性亏损补贴测算模型相较于其他模型更适用于中小民航机场,同时针对目前中小机场的运营现状及政策性亏损补贴特点,提出中小民航机场运营建议及补贴保障措施。