Optimal control of a quality supervision profit model for the electronic intermediary

Online customers execute transactions without inspecting products could expect to encounter risks of receiving products with unsatisfactory qualities,especially in food trans-actions.Thus quality supervision plays a key role in the establishment of trust as well as in the management of risk between online customers and sellers.Most papers in this field are in qualitative nature.In this paper,a quality supervision profit(QSP)model is formulated as a discrete-time optimal control problem.It is a quantitative approach,and it broadens the scope.of current research in the area.The quality efort level of online sellers(QELa)and the quality supervision level of the electronic intermediary(QSLm)are considered together with their cor-responding profit in the proposed model.The aim is to optimize an overall profit.A case study arising from Suichang's food traceability system(FTS)of farm produce online transaction is carried out in details.The results reveal that QELs,QSLm and the profit distribution coeffi-cient have a strong influence upon the profits of both sides.Finally,some concluding remarks,including potential further research topics,are given.

Discussions and Recommendations for Supervision of Vegetable Quality and Safety in Miyun County

Vegetable is a pillar industry of agriculture in Miyun County. Improving vegetable quality and ensuring consumers rest assured in consumption are essential for promoting increase of agricultural efficiency and farmers＇ income, and also the necessity for promoting sustainable development of vegetable industry. This paper elaborated current situations of vegetable production and quality and safety in Miyun County, summarized practice and exploration in supervision of vegetable quality and safety, and came up with recommendations for reinforcing supervision of vegetable quality and safety in view of weak points.

National Quality Supervision & Inspection Center for Refractories

National Quality Supervision ＆ Inspection Center for Refractories （NRQS） was set up in 1986 and was authorized in 1990 by State Bureau of Quality and Technical Supervision （SBQTS） as the state supervision ＆ inspection center （Certificate SBQTS No. 101）. In 1993, NRQS was granted Import ＆ Export Authorized Laboratory for national refractories by the State Administration for Entry Exit Inspection and Quarantine （Certificate No. 5302）. In 1995, NRQS was granted the national testing organization by State Committee of Science ＆ Technology and SBQTS. In September 2000,

Examining Construction Quality Supervision and Organization Procedures for BOT Projects by Comparing with DBB Projects

Adopting the BOT （build-operate-transfer） delivery method has brought opportunities and challenges in construction time and quality for urban infrastructure. Many studies investigate the upstream issues of BOT projects such as concessionaire selection criteria and risk factors. But the project execution becomes complicated such as the escalated quality supervision organization and procedure at the construction stage. This extra supervision may have constituted hidden redundancies as waste to economic sustainability. This paper investigated construction quality supervision of BOT projects to pinpoint adequate degree of supervision and detect redundant organization and procedures. The study adopted ten subway construction projects as cases in which five were from the traditional design-bid-build （DBB） and five from the BOT methods. Thirty six project participants including owners, contractors, designers, and concessionaire managers of the ten projects were interviewed to tell their views on these issues. The quality supervision measures of the DBB projects were used as the baseline and compared with those of the BOT projects. The research results show that the construction quality seems no difference for the DBB and BOT projects. Construction quality comes out of supervision but excessive supervision organization and procedures do not necessarily improve quality. This finding indicates that adequate degree of supervision is enough to achieve required quality to save immense paperwork for large construction projects.

The Research to Quality Supervision and Management of Power Enterprises

Intensive in-depth development of resources, centralized purchasing and gradually expand under the category of environment, this paper studies how to use information technology tools to construction quality supervision and management system that focuses on the quality of supervision and project management, quality control process management, quality monitoring statistics report management, platform management-related content in four areas. Through the construction quality supervision and management system, to better enhance the quality of electric power enterprise management level, to ensure that the material quality, quantity of time and supplies. strengthening quality supervision and management can not only effectively reduce material procurement costs, but also enhance the competitiveness of enterprises.

Measures to strengthen engineering quality supervision in construction management

With the continuous advancement of China's urbanization process,the demand for construction projects is increasing,which is both an opportunity and a challenge for construction companies.If the enterprises themselves can grasp the background and policy conditions to maintain a high level of construction engineering,then its enterprise benefits and future development prospects will be excellent.However,there are also many companies whose own reputation and actual benefits have been affected for poor engineering quality caused by poor construction management.This is exactly what we must pay attention to.This article will analyse and explore the relevant work to improve the engineering quality of different phases of engineering construction and to guide the management of the construction unit in the future from the perspective of the construction unit to strengthen the project quality supervision.

Construction and Application of Knowledge Graph for Quality and Safety Supervision of Transportation Engineering

Knowledge graph technology play a more and more important role in various fields of industry and academia.This paper firstly introduces the general framework of the knowledge graph construction,which includes three stages:information extraction,knowledge fusion and knowledge processing.In order to improve the efficiency of quality and safety supervision of transportation engineering construction,this paper constructs a knowledge graph by acquiring multi-sources heterogeneous data from supervision of transportation engineering quality and safety.It employs a bottom-up construction strategy and some natural language processing methods to solve the problems of the knowledge extraction for transportation engineering construction.We use the entity relation extraction method to extract the entity triples from the multi-sources heterogeneous data,and then employ knowledge inference to complete the edges in the constructed knowledge graph,finally perform quality evaluation to add the valid triples to the knowledge graph for updating.Subgraph matching technology is also exploited to retrieve the constructed knowledge graph for efficiently acquiring the useful knowledge about the quality and safety of transportation engineering projects.The results show that the constructed knowledge graph provides a practical and valuable tool for the quality and safety supervision of transportation engineering construction.

AQSIQ Popularizing Nation-wide Launching of Electronic Network for Product Quality Supervision

According to AQSIQ, it has made an effort to popularize the launching ofelectronic ''network for product quality supervision in the whole nation. China Product QualitySupervision Electronic Network is a nation-wide network, which employs modern informationtechnology, network technology and encoding technology to supervise enterprises'' products in anelectronic way. The new system labels digital information on all items of products that are includedin the network.

Certification Becomes Important for the Quality and Safety Supervision of the Chinese Liquor Sector

The end of 2007, over 200 unit products of more than 80 Chinese firms have passed the quality grade certification for liquor products. These products involve distilled spirits, beer, wine, yellow wine, fruit syrup wine and others, and cover over 80% of the national top-branded liquor products.……

Theoretical Application of Supervision over Quality and Safety of Agricultural Products

Supervision over quality and safety of agricultural products has received high attention of management department.Competent authorities have formulated and issued many measures to strengthen supervision over quality and safety of agricultural products and improve China's agricultural product quality and safety level.From the perspective of management science,this paper elaborates basic contents of two basic management theories,Broken Windows Effect and Effect of Heat Furnace.Then,it analyzes influence of Broken Windows Effect and Effect of Heat Furnace on supervision over quality and safety of agricultural products.Finally,it comes up with recommendations for supervision over quality and safety of agricultural products.

Innovation of Supervision System for Quality and Safety of Edible Agricultural Products

This paper elaborated multidimensional characteristics of quality and safety of agricultural products,introduced current situation of quality and safety supervision of edible agricultural products in China,analyzed existing problems of quality and safety supervision system and corresponding reasons,and finally came up with recommendations for innovation of supervision system for quality and safety of agricultural products.

Exploring the Sample Quality Using Rough Sets Theory for the Supervised Classification of Remotely Sensed Imagery

In the supervised classification process of remotely sensed imagery, the quantity of samples is one of the important factors affecting the accuracy of the image classification as well as the keys used to evaluate the image classification. In general, the samples are acquired on the basis of prior knowledge, experience and higher resolution images. With the same size of samples and the same sampling model, several sets of training sample data can be obtained. In such sets, which set reflects perfect spectral characteristics and ensure the accuracy of the classification can be known only after the accuracy of the classification has been assessed. So, before classification, it would be a meaningful research to measure and assess the quality of samples for guiding and optimizing the consequent classification process. Then, based on the rough set, a new measuring index for the sample quality is proposed. The experiment data is the Landsat TM imagery of the Chinese Yellow River Delta on August 8th, 1999. The experiment compares the Bhattacharrya distance matrices and purity index zl and △x based on rough set theory of 5 sample data and also analyzes its effect on sample quality.

National Quahty Supervision ＆ Inspection Center for Refractories

National Quality Supervision ＆ Inspection Center for Refractories （NRQS） was set up in 1986 and was authorized in 1990 by State Bureau of Quality and Technical Supervision （SBQTS） as the state supervision ＆ inspection center （Certificate SBQTS No. 101）.

Main Problems and Countermeasures of Chinese Chive Quality and Safety in China

In recent years,the problem of pesticide residues in Chinese chives has attracted widespread attention from society.This paper comprehensively analyzed the production and planting situation,quality and safety status and changes in pesticide standards of Chinese chives,and deeply discussed the main quality and safety problems of Chinese chives and their causes.On this basis,it was proposed to improve the quality and safety level of Chinese chives from three aspects:improving limit standards,promoting green production prevention and control techniques,and strengthening supervision on input products.

我国电线电缆产品的质量监管模式研究

本文阐述了电线电缆产品和行业的基本情况,分析了我国电线电缆的质量监管方式、监督抽查和风险监测情况,研究了我国电线电缆行业监管中存在的主要问题及原因,并提出了相应的解决措施。

广东省东莞市生猪及其产品质量安全信息化监管模式

为解决猪肉产品消费环节与生猪养殖环节信息脱钩的问题,东莞市以数字喷码技术为基础,探索建立了生猪及其产品质量安全信息化监管模式,打通了从生猪养殖到猪肉产品消费各环节的信息关联,实现了生猪屠宰及肉产品质量安全可追溯和全产业链智慧监管。经东莞市2个生猪屠宰场及4个农贸市场试点证实,该模式可行有效,既节省了屠宰加工企业经营成本,又提高了肉产品价值,同时也提高了监管机构监管效率,使动物检疫行为更加规范,动物疫病防控能力得到增强,保障了东莞市猪肉肉产品质量卫生安全。东莞市的全过程信息化监管模式为其他地区的生猪产品信息化监管提供了借鉴。

数字化转型赋能企业绿色创新:监督效应与激励效应的分析

数字化转型是新一轮产业革命驱动下企业的战略选择,为企业绿色创新提供了新动能。以2011—2020年沪深两市A股上市公司为样本,理论分析并实证检验了数字化转型赋能企业绿色创新的作用机制。研究发现:数字化转型可以显著促进企业的绿色创新。该结论在经过一系列稳健性检验后依然成立。机制分析表明,数字化转型驱动企业实施绿色创新主要通过监督效应和激励效应两条路径实现。异质性分析表明,在内部控制质量较好、所处地区市场化水平较高、国有和重点排污企业中,数字化转型产生的绿色创新驱动效应更大。此外,数字化转型推进企业同时开展绿色独立和联合创新、同时积累绿色发明专利和实用新型专利。研究结论明确了数字化转型赋能企业绿色创新的作用机理,为促进企业绿色创新、助力企业高质量发展提供了政策启示。

土木工程学科博士研究生培养质量提升的体系构建研究

高层次人才培养和创新创造是研究生教育的重要使命。近期,多部门联合发文要求加快新时代研究生教育改革。只有按照“四个面向”为国家破解“卡脖子”技术,取得原创新科技成果才能成为国家战略科技力量。围绕“立德树人、服务需求、提高质量、追求卓越”的新发展思路,结合同济大学深化综合改革方案和建设世界一流大学的总体需要,对于土木工程学科博士研究生培养质量提升体系的构建进行研究,进一步突显人才培养的质量与内涵,着重强调课程和培养中间环节的质量保证和过程监督、研究生培养分流退出机制、学院和导师的主体责任,构建闭环管理体系以提升博士研究生培养质量。

碳信息披露质量、政府补助与绿色技术创新

“双碳”目标是我国高质量发展的必然选择,强化企业碳信息披露有利于推动企业绿色转型,促进经济高质量发展和“双碳”目标实现。本文基于2012—2022年深沪A股重污染行业上市企业面板数据,利用中介效应模型计量检验了碳信息披露质量对企业绿色技术创新的影响以及政府补助的中介效应,分析了内部监督的调节作用,并就不同企业规模及性质的碳信息披露质量对绿色技术创新的影响水平进行异质性分析。研究结果显示:碳信息披露质量对企业绿色技术创新有正向促进作用,且政府补助在其中具有中介效应。良好的内部监督机制能够促进企业绿色技术创新,内部监督程度越高,中介效应越强。异质性分析发现,国有企业的碳信息披露质量和规模较大的企业碳信息披露质量,对于企业绿色技术创新的促进作用更显著。应制定完善的信息披露政策和规范,提高碳信息披露质量;优化政府补助政策,助力企业绿色技术创新;强化内部监督机制,健全碳信息披露监管体系,切实提高碳信息披露质量,助力绿色技术创新。

环境污染责任保险与企业高质量审计需求——基于保险公司监督视角的经验证据

在绿色高质量发展时代背景下,发展环境污染责任保险,对强化企业环保履责、降低企业因受环保处罚引致的经营风险具有重要意义。本文从保险公司监督视角实证检验了环境污染责任保险对企业高质量审计需求的影响。研究发现,环境污染责任保险提升了投保企业高质量审计需求,保险公司的高质量信息需求、专业监督能力需求是导致投保企业高质量审计需求增加的主要传导机制;异质性检验发现,在国有企业、内部治理水平较低的企业和受到更多媒体负面报道的企业中,环境污染责任保险对高质量审计需求的影响更加显著;经济后果检验发现,投保企业通过提高高质量审计需求改善了企业环境表现。研究结论对于进一步推进资本市场审计制度完善和环境污染责任保险发展具有一定的政策启示。