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Transparent and Accountable Training Data Sharing in Decentralized Machine Learning Systems
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作者 Siwan Noh Kyung-Hyune Rhee 《Computers, Materials & Continua》 SCIE EI 2024年第6期3805-3826,共22页
In Decentralized Machine Learning(DML)systems,system participants contribute their resources to assist others in developing machine learning solutions.Identifying malicious contributions in DML systems is challenging,... In Decentralized Machine Learning(DML)systems,system participants contribute their resources to assist others in developing machine learning solutions.Identifying malicious contributions in DML systems is challenging,which has led to the exploration of blockchain technology.Blockchain leverages its transparency and immutability to record the provenance and reliability of training data.However,storing massive datasets or implementing model evaluation processes on smart contracts incurs high computational costs.Additionally,current research on preventing malicious contributions in DML systems primarily focuses on protecting models from being exploited by workers who contribute incorrect or misleading data.However,less attention has been paid to the scenario where malicious requesters intentionally manipulate test data during evaluation to gain an unfair advantage.This paper proposes a transparent and accountable training data sharing method that securely shares data among potentially malicious system participants.First,we introduce a blockchain-based DML system architecture that supports secure training data sharing through the IPFS network.Second,we design a blockchain smart contract to transparently split training datasets into training and test datasets,respectively,without involving system participants.Under the system,transparent and accountable training data sharing can be achieved with attribute-based proxy re-encryption.We demonstrate the security analysis for the system,and conduct experiments on the Ethereum and IPFS platforms to show the feasibility and practicality of the system. 展开更多
关键词 Decentralized machine learning data accountability dataset sharing
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The Influence of Information Technology(IT)on Accrual Accounting Adoption:The Case of the Jordanian Public Sector
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作者 Moawiah Awad Alghizzawi Rosnia Masruki 《Journal of Modern Accounting and Auditing》 2024年第2期40-48,共9页
Jordan is one of many countries that intends to reform its public sector by adopting accrual accounting,which is primarily carried out through the International Public Sector Accounting Standards(IPSAS)implementation ... Jordan is one of many countries that intends to reform its public sector by adopting accrual accounting,which is primarily carried out through the International Public Sector Accounting Standards(IPSAS)implementation plan,scheduled to be completed by 2021.Considering the difficulties of adoption,this process cannot be completed without an appropriate Information Technology(IT)system capable of providing the accounting information required for this reform.Therefore,this study aims to examine the influence of IT on accrual accounting adoption in the Jordanian public sector.The study employed the quantitative survey approach.Based on 331 usable questionnaires,the descriptive findings showed that the use of IT in the Jordanian public sector is relevant to daily accounting transactions in general and to accrual accounting in particular.The regression analysis showed a positive,significant relationship between IT use and accrual accounting practice.The IT specialist should be able to understand the needs of public sector in adopting accrual-based accounting.In line with today’s digitalization age,which integrates advanced technologies and numerous techniques,this study suggests that a combination of accounting and IT experts is a value added to sharpen the competitiveness of public sector reform.This study contributes to the extant literature in public sector,concerning the relationship between IT and accrual accounting adoption in the context of Jordan. 展开更多
关键词 public sector accrual accounting adoption information technology JORDAN
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From EBIT to SEBIT(Sustainable EBIT):Sustainable Performance Accounting(SPA)Using the Example of CO_(2) Accounting
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作者 Knut Henkel Jenny Lay-Kumar Christian Hiß 《Journal of Modern Accounting and Auditing》 2024年第2期49-71,共23页
Corporate sustainability reporting has become increasingly important in recent years.However,conventional approaches reach their limits when it comes to quantifying and measuring the actual sustainability performance ... Corporate sustainability reporting has become increasingly important in recent years.However,conventional approaches reach their limits when it comes to quantifying and measuring the actual sustainability performance of a company.This article presents a new approach:Sustainable Performance Accounting(SPA),which is based on an extension of bookkeeping by including ESG bookkeeping.SPA enables companies to systematically measure and manage their sustainability performance.The article provides an overview of the basics of SPA methodology and uses a comprehensive example showing how SPA can be implemented in practice.The article is aimed at interested readers from science and practice as well as decision-makers who are interested in future-oriented sustainability reporting. 展开更多
关键词 CO_(2)accounting CO_(2)emissions CSRD ESG(Environmental Social Governance) ESG bookkeeping ESG provision ESG asset ESRS integrated financial reporting internalisation of external effects connectivity monetisation of ESG issues sustainability sustainability indicators negative emissions sequestration performance Sustainable Performance accounting(SPA)
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Variable and Invariable,Explore the Value-Creation Techniques of Management Accounting by Benchmarking the Financial Management of Large Enterprises
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作者 Jie Jin Jiajie Mu 《Proceedings of Business and Economic Studies》 2024年第1期45-50,共6页
With the development of information technology such as ChatGPT,artificial intelligence,5G,and so on,technological innovation brings about a qualitative change in the economic business.This change is embodied in breakt... With the development of information technology such as ChatGPT,artificial intelligence,5G,and so on,technological innovation brings about a qualitative change in the economic business.This change is embodied in breakthroughs in the field of science and technology and the iterative upgrading process of products.The traditional business model undoubtedly fails to adapt to the management needs of modern enterprises,while traditional financial practices and knowledge reserves cannot meet these needs.Faced with sudden technological changes and the emergence of financial sharing,financial robots,etc.,there is an urgent need for financial practitioners to transform from traditional financial accounting to value-creating management accounting.In the future,financial professionals with the ability to embrace uncertainty,adapt to environmental changes,and find breakthroughs in uncertain environments will be the most sought-after by enterprises.This paper aims to benchmark the excellent financial management models of large enterprises and conduct thematic research on financial management in large enterprises.It seeks to explore,in the era of big data management accounting,the road and art of creating value in enterprises.The objective is to provide references for colleagues in the financial field and to explore effective ways to generate value for enterprise management ideas,thus serving as a reference point in the financial transformation journey. 展开更多
关键词 Management accounting Industry-finance integration Management reporting Cost management
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Analysis of Internal Control Management Problems in Hospital Finance and Accounting
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作者 Yan Wang 《Proceedings of Business and Economic Studies》 2024年第3期133-139,共7页
This paper outlines the internal control management of hospital accounting and finance,introducing its concept,importance,and objectives.It then analyzes the problems existing in the internal control management of hos... This paper outlines the internal control management of hospital accounting and finance,introducing its concept,importance,and objectives.It then analyzes the problems existing in the internal control management of hospital accounting and finance,including an unsound management system,insufficient system implementation,inadequate risk assessment and control capabilities,poor information communication,weak internal supervision,and uneven personnel quality.The reasons for these problems are also analyzed,including outdated management concepts,irrational organizational structures,imperfect training and incentive mechanisms,low levels of information technology,and changes in the external environment.This paper proposes improvement measures for the internal control management of hospital accounting,including enhancing the management system,strengthening system implementation,improving risk assessment and control capabilities,enhancing the information communication mechanism,strengthening internal supervision,improving personnel quality,advancing information technology,and adapting to changes in the external environment. 展开更多
关键词 Hospital accounting Internal control management Medical system reform Financial security Operational efficiency
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Carbon emission reduction accounting method for a CCUS-EOR project
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作者 WANG Fang LIAO Guangzhi +3 位作者 SU Chunmei WANG Feng MA Jianguo YANG Yongzhi 《Petroleum Exploration and Development》 SCIE 2023年第4期989-1000,共12页
It is difficult to quantify and certify the greenhouse gas(GHG)emission reduction in the entire process of a project of carbon capture,utilization and storage(CCUS)-enhanced oil recovery(EOR).Under the methodological ... It is difficult to quantify and certify the greenhouse gas(GHG)emission reduction in the entire process of a project of carbon capture,utilization and storage(CCUS)-enhanced oil recovery(EOR).Under the methodological framework for GHG voluntary emission reduction project,the carbon emission reduction accounting method for CCUS-EOR project was established after examining the accounting boundaries in process links,the baseline emission and project emission accounting methods,and the emission and leakage quantification and prediction models,in order to provide a certification basis for the quantification of GHG emission reduction in the CCUS-EOR project.Based on the data of energy consumption,emission and leakage monitoring of the CCUS-EOR industrial demonstration project in Jilin Oilfield,the net emission reduction efficiency is determined to be about 91.1%at the current storage efficiency of 80%.The accounting and prediction of carbon emission reduction for CCUS-EOR projects with different concentrations and scales indicate that within the project accounting boundary,the certified net emission reduction efficiency of the low-concentration gas source CCUS-EOR projects represented by coal-fired power plants is about 37.1%,and the certified net emission reduction efficiency of the high-concentration gas source CCUS-EOR projects represented by natural gas hydrogen production is about 88.9%.The proposed method is applicable to the carbon emission reduction accounting for CCUS-EOR projects under multiple baseline scenarios during the certification period,which can provide decision-making basis for the planning and deployment of CCUS-EOR projects. 展开更多
关键词 CCUS-EOR carbon emission accounting accounting boundary baseline emission
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An Optimized Method for Accounting Information in Logistic Systems
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作者 Ahmad Mohammed Alamri Ahmad Ali AlZubi 《Computer Systems Science & Engineering》 SCIE EI 2023年第5期1595-1609,共15页
In the era of rapid information development,with the popularity of computers,the advancement of science and technology,and the ongoing expansion of IT technology and business,the enterprise resource planning(ERP)syste... In the era of rapid information development,with the popularity of computers,the advancement of science and technology,and the ongoing expansion of IT technology and business,the enterprise resource planning(ERP)system has evolved into a platform and a guarantee for the fulfilment of company management procedures after long-term operations.Because of developments in information technology,most manual accounting procedures are being replaced by computerized Accounting Information Systems(AIS),which are quicker and more accurate.The primary factors influencing the decisions of logistics firm trading parties are investigated in order to enhance the design of decision-supporting modules and to improve the performance of logistics enterprises through AIS.This paper proposed a novel approach to calculate the weights of each information element in order to establish their important degree.The main purpose of this research is to present a quantitative analytic approach for determining the important information of logistics business collaboration response.Furthermore,the idea of total orders and the significant degrees stated above are used to identify the optimal order of all information elements.Using the three ways of marginal revenue,marginal cost,and business matching degree,the information with cumulative weights is which is deployed to form the data from the intersection of the best order.It has the ability to drastically reduce the time and effort required to create a logistics business control/decision-making system. 展开更多
关键词 accounting information systems decisions systems corporate accounting logistic system
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Financial decision‑making behaviors of Ethnic Tibetan Households based on mental accounting
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作者 DunGang Zang Krishna P.Paudel +2 位作者 Yan Liu Dan Liu Yating He 《Financial Innovation》 2023年第1期2428-2453,共26页
Ethnic Tibetans(ETs)typically reside in the remote plateaus of China and possess strong cultural and spiritual values.Their financial decision-making is influenced by economic and physical factors,unique culture,socia... Ethnic Tibetans(ETs)typically reside in the remote plateaus of China and possess strong cultural and spiritual values.Their financial decision-making is influenced by economic and physical factors,unique culture,social norms,and psychological motivators.We conducted an in-person survey of 480 randomly selected ET households across four provinces in rural China.The survey data was analyzed using three different econometric models—probit,ordered probit,and ranked ordered logit—to examine the choice of borrowing from formal or informal credit sources,the number of sources borrowed from,and repayment priority.Our findings indicate that mental accounting plays a significant role in the financial decision-making process of ET households.Additionally,we find that the informal credit source is strongly associated with the financial decisions of ET households.The majority of loans from formal financial institutions are used to meet daily needs,as opposed to purchasing productive inputs.Our results also suggest that strong social relationships and religious beliefs prevent households from defaulting,and that loans from formal financial sources receive repayment priority.China would benefit from promoting inclusive finance and encouraging the adoption of improved agricultural practices to support the prosperity of ET and other minority communities. 展开更多
关键词 Mental accounting Rural financing behaviors Ethnic Tibetan households Religious belief
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Critical Dialogic Accounting and Accountability Through Integrated Popular Reporting and Digital Technologies: The City of Bari
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作者 Paolo Pietro Biancone Silvana Secinaro +1 位作者 Valerio Brescia Ginevra Degregori 《Journal of Modern Accounting and Auditing》 2023年第4期93-100,共8页
Over the past two decades,dialogic accounting research has evolved into a distinct field,expanding into what is now recognized as critical dialogic accounting and accountability(CDAA).The integration of critical dialo... Over the past two decades,dialogic accounting research has evolved into a distinct field,expanding into what is now recognized as critical dialogic accounting and accountability(CDAA).The integration of critical dialogic accounting and accountability acknowledges the growing need to recognize diverse pathways within accounting practices,emphasizing the representation of marginalized perspectives,engagement with power dynamics,and the analysis of conflicts,particularly in the context of societal and environmental impacts.Based on these assumptions,the Integrated Popular Reporting(IPR)is intended as a useful practical dialogic tool designed to impartially represent the viewpoints of different stakeholders.The focus extends beyond traditional dialogic accounting,integrating a newer critical lens that explores the implications of digital technology in the reporting process.To explore these advancements,the study investigates the implementation of the City of Bari’s 2020 Integrated Popular Reporting.Leveraging tools such as Talkwalker and employing a longitudinal,interventionist approach along with semi-structured interviews,the study assesses the effects of digital technologies on the dialogic accounting process.The analysis shows that the use of digital technologies has facilitated a more participatory reporting structure,evident in increased citizen engagement and reduced bureaucratic hurdles.Notably,it has enhanced the accuracy of defining citizens’informational needs and addressed pertinent themes ranging from mobility,economy,digitization,regeneration,and employment.Moreover,it underscores the need to address the digital divide and ensure inclusivity across diverse demographics.Ultimately,it contributes to the ongoing discourse on the role of technology in shaping the future of dialogic accounting and its broader implications for societal accountability. 展开更多
关键词 critical dialogic accounting and accountability(CDAA) Integrated Popular Reporting digital technology dialogic accounting longitudinal case study
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Research on Integrating Data Assets Into Accounting Discipline System
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作者 JIN Fan 《Journal of Modern Accounting and Auditing》 2023年第4期101-112,共12页
As data is incorporated into production factors,the Accounting discipline should intensively study the new data asset.Starting from the analysis of the value attribute,right attribute,and relationship attribute of the... As data is incorporated into production factors,the Accounting discipline should intensively study the new data asset.Starting from the analysis of the value attribute,right attribute,and relationship attribute of the data,it is found that under certain conditions,the data has complete Accounting attributes and can be included in the assets.The Accounting discipline shall establish the research direction of Data Asset Accounting and focus on the research,including the recognition and measurement of data assets,the value evaluation of data assets,information disclosure,and Data Asset Accounting standards.Data assets are facing the major challenge of integrating into the Accounting discipline.We can carry out the Accounting professional reform and textbook construction facing the practice of data assets management from the aspects of theoretical construction,talent training,and industry research cooperation. 展开更多
关键词 data assets accounting discipline accounting attribute
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Research on Accounting Issues of the Pension Insurance Fund for Urban Employees
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作者 Jiatong Liu 《Proceedings of Business and Economic Studies》 2023年第4期30-36,共7页
Pension insurance is a vital component of China's social security system,ensuring the welfare of the general publie.This study centers on the revenue and expenses of City S's urban employee basic pension insur... Pension insurance is a vital component of China's social security system,ensuring the welfare of the general publie.This study centers on the revenue and expenses of City S's urban employee basic pension insurance fund.It introduces and analyzes the fund's accounting status from four key perspectives:fund raising.expenditure,financial statement system,and accounting information disclosure.The research identifes existing problems in City S's accounting system and conducts in-depth research on these issues.Furthermore,an empirical analysis is conducted on the management of the pension insurance fund.Through this empirical study,the paper aims to offer insights and recommendations for promoting stable and healthy development measures for City S'8 urban employee basic pension insurance fund. 展开更多
关键词 Urban employee basic pension insurance fund accountING accounting information disclosure Empirical analysis
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扩大金融领域制度型开放的运行机理、现实风险和实施路径 被引量:2
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作者 刘凌 黄建忠 汪建新 《国际贸易》 北大核心 2024年第1期77-86,共10页
扩大金融领域制度型开放是开放型经济发展的必然要求,是实现国民经济高质量发展和中国式现代化的重要保证。以习近平新时代中国特色社会主义思想为指导,结合数字科技产业发展与中国积极加入CPTPP、DEPA的趋势要求,以国际高标准规则和中... 扩大金融领域制度型开放是开放型经济发展的必然要求,是实现国民经济高质量发展和中国式现代化的重要保证。以习近平新时代中国特色社会主义思想为指导,结合数字科技产业发展与中国积极加入CPTPP、DEPA的趋势要求,以国际高标准规则和中国金融开放的问题为导向,厘清金融领域制度型开放的瓶颈和基于RTA规则的差距,从金融服务业务、金融市场和资本账户等领域分析扩大金融领域制度型开放的运行机理和现实风险,并在此基础上提出金融领域制度型开放有序扩大的长中短期目标、实施路径、战略规划和方案设计。文章的研究为中国克服金融开放瓶颈,推进“金融深化”,建设金融强国,建立和完善中国特色的自主性开放型金融理论知识体系提供有益贡献。 展开更多
关键词 制度型开放 金融开放 高水平对外开放 资本账户开放
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区块链赋能企业财务共享模式:应收账款管理 被引量:1
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作者 张蔚虹 吕哲雅 +1 位作者 史会斌 李璐廷 《西安电子科技大学学报(社会科学版)》 2024年第1期82-90,共9页
针对财务共享模式下应收账款管理中存在的信息共享不及时、票据处理效率低、甄别客户信用手段落后、交易信息可验证性弱的问题,本文基于业务财务、共享财务和战略财务三层职能框架,应用区块链的P2P网络广播技术、智能合约和共识机制技术... 针对财务共享模式下应收账款管理中存在的信息共享不及时、票据处理效率低、甄别客户信用手段落后、交易信息可验证性弱的问题,本文基于业务财务、共享财务和战略财务三层职能框架,应用区块链的P2P网络广播技术、智能合约和共识机制技术,重构了财务共享模式下应收账款管理的系统框架,并从技术原理与业务流程两方面探讨了区块链赋能应收账款管理的实现路径。提出了从财务三层职能框架整体视角推进区块链技术的应用,对应收账款管理流程进行优化,以及基于区块链的财务生态系统建设等建议,为财务共享模式下全面提升应收账款管理效能提供了借鉴。 展开更多
关键词 区块链技术 财务共享模式 应收账款管理系统框架 应收账款管理流程优化
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交通碳排放研究综述::核算方法、影响因素及作用机理 被引量:1
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作者 左大杰 赵亮 +3 位作者 熊巧 刘志鹏 王梦涛 池俞良 《交通运输工程与信息学报》 2024年第1期111-127,共17页
交通运输业是碳减排的重要行业,关于交通碳排放核算方法、影响因素及作用机理的研究一直是交通碳排放研究领域的一个热点。本文从交通碳排放量核算方法、交通碳排放影响因素辨识、交通碳排放作用机理分析三个方面来进行综述。在交通碳... 交通运输业是碳减排的重要行业,关于交通碳排放核算方法、影响因素及作用机理的研究一直是交通碳排放研究领域的一个热点。本文从交通碳排放量核算方法、交通碳排放影响因素辨识、交通碳排放作用机理分析三个方面来进行综述。在交通碳排放量核算方法部分按照直接获取、“自上而下”法、“自下而上”法、机动车排放模型四种方法进行分类。在交通碳排放影响因素辨识部分从IPAT模型、Kaya恒等式、直接选取三点进行综述,并对近年学者们选取的影响因素进行了总结。在交通碳排放作用机理分析部分综述了脱钩模型、因素分解法、计量经济学方法、系统动力学方法,进而对用不同方法分析的交通碳排放作用机理进行了总结,其中Tapio脱钩模型和对数平均迪氏指数分解法是应用较为广泛的方法。最后,探讨了交通碳排放核算方法、影响因素及作用机理研究中的关键问题,指出本领域的研究难点主要集中于交通碳排放核算方法的优化及统一、影响因素选取体系的形成上。 展开更多
关键词 综合运输 碳排放量核算 影响因素 作用机理 文献综述
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医疗人工智能应用的法律挑战及其治理 被引量:3
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作者 石佳友 徐靖仪 《西北大学学报(哲学社会科学版)》 北大核心 2024年第2期91-103,共13页
医疗人工智能的高效性和先进性对公共卫生和医疗保健领域的技术创新产生了深刻影响。医疗人工智能有望使公民更好地享有健康权,并对整个公共卫生领域带来裨益,但同时也需注意医疗人工智能的发展速度远超对其监管框架的部署规划,会对个... 医疗人工智能的高效性和先进性对公共卫生和医疗保健领域的技术创新产生了深刻影响。医疗人工智能有望使公民更好地享有健康权,并对整个公共卫生领域带来裨益,但同时也需注意医疗人工智能的发展速度远超对其监管框架的部署规划,会对个人权利和公共健康构成严重挑战,亟需法律作出相应回应。从相关当事人的尊严和自主性的保护、健康数据处理中的隐私和个人信息保护、医疗人工智能应用的公平性和透明度、问责制度和归责原则等方面分析了医疗人工智能应用的法律挑战,并从明确医疗人工智能的治理原则,建立包含硬法和软法在内的初步立法框架,构建科学、合理、高效的监管体制等角度构思了我国医疗人工智能的治理框架。 展开更多
关键词 医疗人工智能 自主性保护 个人信息保护 公平性和透明度 问责制度
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中国平台经济规模核算及预测 被引量:1
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作者 颜长春 廖俊 《调研世界》 2024年第2期3-15,共13页
平台经济是数字经济的重要组成部分,测度平台经济的规模具有十分重要的现实意义。为此,本文结合国内外相关研究,将平台经济从数字经济的概念中剥离出来,对平台经济的生产与产出统计范围进行界定,构造平台经济规模核算框架,对2005—2021... 平台经济是数字经济的重要组成部分,测度平台经济的规模具有十分重要的现实意义。为此,本文结合国内外相关研究,将平台经济从数字经济的概念中剥离出来,对平台经济的生产与产出统计范围进行界定,构造平台经济规模核算框架,对2005—2021年平台经济增加值规模及其占GDP的比重进行统计测度,并通过指数平滑法和灰色预测模型对我国平台经济发展规模进行预测。本文研究结果为了解我国平台经济的发展现状及趋势、理解平台经济产业结构特征提供数据支撑,为把平台经济核算纳入现行国民经济核算体系提供参考建议。 展开更多
关键词 平台经济 统计核算 规模预测
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“双碳”目标下火电厂CO_(2)计量技术研究现状与展望 被引量:1
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作者 张安安 周奇 +3 位作者 李茜 丁宁 杨超 马岩 《发电技术》 CSCD 2024年第1期51-61,共11页
中国电力行业CO_(2)排放量是CO_(2)排放的主要来源,其中火电厂CO_(2)排放量在电力行业中占比最大。在“双碳”目标下,CO_(2)计量技术可以实现对火电厂中CO_(2)排放量的直观判断,为火电厂CO_(2)减排提供重要支撑,促进火电厂参与碳交易,... 中国电力行业CO_(2)排放量是CO_(2)排放的主要来源,其中火电厂CO_(2)排放量在电力行业中占比最大。在“双碳”目标下,CO_(2)计量技术可以实现对火电厂中CO_(2)排放量的直观判断,为火电厂CO_(2)减排提供重要支撑,促进火电厂参与碳交易,带动区域经济发展。结合国内外政策,讨论了目前通用CO_(2)计量方法的实施进展,总结归纳了以碳核算为主、碳监测为辅的火电厂CO_(2)计量方法存在的问题,并对火电厂CO_(2)计量技术应用的重难点进行了分析。最后,对火电厂CO_(2)计量技术的发展及应用进行了展望。 展开更多
关键词 火电厂 双碳 CO_(2)计量 碳核算 碳监测
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我国教育核算体系的框架及理论阐释
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作者 李金华 《统计研究》 北大核心 2024年第4期141-152,共12页
世界各国都高度重视教育发展,在新时代背景下进行教育活动核算方法的研究有重要的理论与实践意义。本文以联合国教科文组织发布的《国民教育账户方法论》(Methodologyof National Education Accounts 2016,MNEA2016)和联合国《国民账户... 世界各国都高度重视教育发展,在新时代背景下进行教育活动核算方法的研究有重要的理论与实践意义。本文以联合国教科文组织发布的《国民教育账户方法论》(Methodologyof National Education Accounts 2016,MNEA2016)和联合国《国民账户体系》(System of National Accounts2008,SNA2008)等为基础,讨论我国教育活动核算体系的理论基础与重要范畴,设计账户与核算表通式,构造教育核算指标体系,探讨我国教育核算体系的数据支撑及其与中国国民经济核算体系(China’s System of National Accounts 2016,CSNA2016)的对接问题,以期形成我国教育核算体系的基本范式。 展开更多
关键词 教育核算 体系范式 账户矩阵 核算表
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BFT问责机制综述
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作者 孙惠平 周进爵 +1 位作者 刘澍轩 陈钟 《信息网络安全》 CSCD 北大核心 2024年第1期14-23,共10页
拜占庭容错(Byzantine Fault Tolerance,BFT)协议在保障区块链或分布式系统在面临节点故障和恶意行为时的一致性和可靠性方面发挥着关键作用。BFT问责机制通过记录和共享共识过程中的共识节点行为,旨在识别拜占庭节点,并能够有效解决在... 拜占庭容错(Byzantine Fault Tolerance,BFT)协议在保障区块链或分布式系统在面临节点故障和恶意行为时的一致性和可靠性方面发挥着关键作用。BFT问责机制通过记录和共享共识过程中的共识节点行为,旨在识别拜占庭节点,并能够有效解决在拜占庭节点数量超过1/3时,传统的BFT协议无法确保安全性和活性的问题。文章系统地总结了目前已有的BFT问责协议,包括服务端问责机制、客户端问责机制和BFT内嵌问责机制。文章还对这些机制进行比较和分析,探讨了存在的挑战,并展望了未来可能的发展方向。 展开更多
关键词 拜占庭容错 问责机制 客户端问责 服务器端问责
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基于水供需服务流及外溢价值核算的太湖流域横向生态补偿机制
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作者 王健 曹巍 黄麟 《生态学报》 CAS CSCD 北大核心 2024年第3期955-965,共11页
通过生态补偿协调流域内经济发展与生态保护的关系、缓解上下游利益相关者之间的矛盾是保障流域经济社会可持续发展的关键措施,而流域生态补偿核定的关键在于两点:一是如何模拟并量化水供需服务流动的流向、流量、流速及路径以明确供需... 通过生态补偿协调流域内经济发展与生态保护的关系、缓解上下游利益相关者之间的矛盾是保障流域经济社会可持续发展的关键措施,而流域生态补偿核定的关键在于两点:一是如何模拟并量化水供需服务流动的流向、流量、流速及路径以明确供需双方及其空间关系;二是如何实现栅格尺度-地理单元-行政单元的尺度推演以实现不同行政单元之间生态系统服务的盈余、占用、外溢核算。整合卫星遥感、经济社会统计、水文气象观测等多源异构数据,集成水量平衡、水供需服务流动、生态价值核算等方法,构建了基于水供需流动及其外溢价值核算的流域横向生态补偿标准核定框架,利用D8流向法解决了水供需服务流动的流向、流量、流速及路径模拟与量化,实现了“栅格尺度-地形单元-行政单元”空间尺度推演的外溢价值核算,形成了流域内横向水生态补偿资金收取与分配方案。以太湖流域为例,在全面分析水资源外溢、占用及其价值的基础上,解析了县域尺度的水供需时空关系、流动路径及属性特征,辅以水质指标进而明确界定了责任方与补偿对象,形成了补偿资金收取与分配方案。结果表明,太湖流域水供需双方界线清晰、服务流近似于自然汇流过程,供给方以流域西部、西南部、中部县域为主,特别是西部至中部的县域,应受偿资金较多,平均各县应受偿资金比例超过2%/a,应受偿资金最多的嘉善区,比例超过19.66%/a;需求方聚集于流域中部、东部,特别是黄浦江自然汇流沿岸县域,应收取补偿资金较多,平均各县应收取资金比例超过5%/a,应收取最多的浦东新区,比例超过15.48%/a;净补偿资金基本呈现西高东低的分布特征,流域的大部分城市核心区的县域净补偿资金为负值。研究的核定框架、量化核算方法、资金统筹方案可应用到其他流域的横向生态补偿机制构建,实现流域内部与流域之间生态保护和经济发展的整体协调。 展开更多
关键词 水供需服务流 外溢价值核算 横向生态补偿 补偿标准核定 太湖流域
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