RED-DTB: A Dual Token Bucket Based Queue Management Algorithm

Improving the Quality of Service (QoS) of Internet traffic is widely recognized as a critical issue for the next-generation networks. In this paper, we present a new algorithm for the active queue management, namely RED-DTB. This buffer control technique is used to enforce approximate fairness among a large number of concurrent Internet flows. Like RED (Random Early Detection) algorithm, the RED-DTB mechanism can be deployed to actively respond to the gateway congestion, keep the gateway in a healthy state, and protect the fragile flows from being stolen bandwidth by greedy ones. The algorithm is based on the so-called Dual Token Bucket (DTB) pattern. That is, on the one hand, every flow is rate-limited by its own token bucket, to ensure that it can not consume more than its fair share of bandwidth; On the other hand, to make some compensations to less aggressive flows, such as connections with larger round trip time or smaller sending window, and to gain a relatively higher system utilization coefficient, all flows, depending on their individual behavior, may have a chance to fetch tokens from the public token bucket when they run out of their own share of tokens. The algorithm is analyzed and evaluated by simulations, and is proved to be effective in protecting the gateway buffer and controlling the fair allocation of bandwidth among flows.

Performance Analysis for Mobility Management of Dual Connectivity in HetNet

Dual connectivity(DC)is regarded as a promising technology to increase users’throughput,provide radio link robustness,and improve load-balancing among base stations(BSs).However,since the introduction of DC makes the mobility of network more complex and diversified,especially the mobility management of heterogeneous networks(HetNets)based on DC faces great challenges.Taking event-A3-based measurement report as the trigger condition for handover(HO),this paper compares and evaluates the influences of HO of master nodes(MNs)and secondary nodes(SNs)on link reliability in different bearing modes.Particularly,hybrid automatic repeat request(HARQ),throughput,channel quality indicators(CQIs),and data packets queuing time are taken as link reliability analysis indicators.Besides,we study how DC utilizes the traffic split ratio between MNs and SNs to maximize the superiority of throughput.Simulation results show that DC can effectively reduce the impact of HO on the number of HARQ and increase the throughput of users.When the data traffic is tilted to the secondary nodes,the superiority of throughput is more obvious.

Cognitive Heuristics and Dual Process Models A Perspective for Management Accounting （MA）？

Classical management accounting （MA） Focusing on the facilitating perspective, focuses on decision facilitating and influencing （Demski ＆ Feltham, 1976）. MA has to provide information to managers and depending on the problem complexity, they have to solve problems in a dyadic way. A dual process model, the heuristic systematic model （HSM）, expands this so-called manager-accountant-dyad and shows different cases of actual human information processing. Managers and accountants either process systematically or heuristically. So far, many concepts have been designed in relation to the normative concept of the economical rational principle. Consequently, recent research only uses systematic information processing, based on the principle of the economic man. In this paper, a decision-behavior oriented approach tries to describe actual decision makers such as managers and accountants and shows new possibilities within MA. Therefore, the potential of heuristic information processing is analyzed, based on the phenomenon of ecological rationality as one shape of bounded rationality. Thus, different cognitive heuristics in business economics are identified and analyzed. Furthermore, the outstanding performance of heuristics compared with more complex calculations is shown. Unfortunately, these findings have been limited to marketing and investments so far. Significant research is needed, regarding conditions for applications and success factors of heuristics in business economics. New empirical findings have to be explicitly transferred to MA.

Dual Focus upon Industrial Restructuring and Market Access Management

The Central Economic Working Conference of the CPC sets out an important mission for China’s economic development in 2007:"tak- ing energy conservation and protection of the ecological environment as the starting point,actively promote optimization and upgrade of the industrial structure".

Comprehensive Online Management Based on Cloud Platform for Breast Cancer Patients Using Dual-Targeted Therapy with Macromolecular Monoclonal Antibodies

Objective: The purpose of the study was to explore the application effects of the cloud platform-based comprehensive online management for breast cancer patients using dual-targeted therapy with macromolecular monoclonal antibodies. Methods: 120 breast cancer patients treated by dual-targeted therapy with macromolecular monoclonal antibodies were managed by a cloud platform from March to November 2019. Comprehensive online management included consultation about drugs and side effects and frequently asked questions in the dual-targeted therapy with macromolecular monoclonal antibodies. Results: In the consultation about drugs and side effects, there were five patients with fever, neutrophil, cough, and fatigue;24 with diarrhea;25 with nausea;11 with oral mucosal inflammation;10 with rashes and dry skin;8 with insomnia;and 1 with palpitation. Moreover, 110 patients with anxiety about the missed or delayed treatment were properly handled. Conclusion: The comprehensive online management of dual-targeted therapy with macromolecular monoclonal antibodies based on the cloud platform is helpful to satisfy the at-home breast cancer patients’ needs, ensure the continuity of dual-targeted therapy with macromolecular monoclonal antibodies for breast cancer patients, prevent misinformation, alleviate patients’ negative psychological emotions, and reduce patients’ economic losses. The online cloud platform integrated management model is crucial for managing patients with breast cancer treated by dual-targeted therapy.

Power management unit chip design for automobile active-matrix organic light-emitting diode display module

A power management unit （PMU） chip supplying dual panel supply voltage, which has a low electro-magnetic interference （EMI） characteristic and is favorable for miniaturization, is designed. A two-phase charge pump circuit using external pumping capacitor increases its pumping current and works out the charge-loss problem by using bulk-potential biasing circuit. A low-power start-up circuit is also proposed to reduce the power consumption of the band-gap reference voltage generator. And the ring oscillator used in the ELVSS power circuit is designed with logic devices by supplying the logic power supply to reduce the layout area. The PMU chip is designed with MagnaChip＇s 0.25 μ high-voltage process. The driving currents of ELVDD and ELVSS are more than 50 mA when a SPICE simulation is done.

Theoretical discussion and framework design of natural resources balance sheet preparation: Based on double standard goal management

"Decision-making usefulness" and "entrusted performance" are not only the goals to be achieved by natural assets statistics, but also the requirements for the state to implement the resignation of leading cadres for auditing and environmental compensation. After the 18th National Congress was convened, the integration of natural resources and the audit of departing cadres further promoted the development of natural resource balance sheet research. Based on the related theories of the development of natural resource assets, this paper starts with its composition, bases its resources on value-added information transmission, and ecological restoration, combines China's unique natural resources, and discusses the basis for the preparation of China's natural resources balance sheet based on dual objectives, goals and framework design. While investigating the report on natural resources, the new concept of natural assets and liabilities emphasizes the relative independence of assets, namely: economic value and potential ecological benefits; past and contingent liabilities, i.e., due to excessive resources Direct losses brought about by mining and potential ecological costs, remediation costs, and repair costs. Finally, referring to SEEA2012 and combining with the specific conditions of China's natural resources, we will discuss not only the physical measurement but also the value measurement for its framework design, constituent elements, and reporting methods.

Toward the Effect of Audit Quality on Earnings Management——Empirical Evidence from Manufacturing Enterprises Listed in Shanghai Stock Market

Nowadays, earnings management is a hot issue, but most of the researches focus on the incentives of earnings management and few of them refer to the effect of audit quality on earnings management. In this study, we directly examine the effect of external audit quality on earnings management by using discretionary accruals. We find that the discretionary accruals of non-dual audit companies are significantly greater than those of dual audit companies. We also find that clients of non-First Ten auditors intend to report greater discretionary accruals than those of First Ten auditors.

Joint User Association and Fair Scheduling for Dual Connectivity Heterogeneous Networks

Heterogeneous small cell network is one of the most effective solutions to overcome spectrum scarcity for the next generation of mobile networks.Dual connectivity(DC)can improve the throughput for each individual user by allowing concurrent access to two heterogeneous radio networks.In this paper,we propose a joint user association and fair scheduling algorithm(JUAFS)to deal with the resource allocation and load balancing issues for DC heterogeneous small cell networks.Considering different coverage sizes,numbers of users,and quality of experience characteristics of heterogeneous cells,we present a proportional fair scheduling for user association among cells and utilize interference graph to minimize the transmission conflict probability.Simulation results show the performance improvement of the proposed algorithm in spectrum efficiency and fairness comparing to the existing schemes.

“主动面向、科教融合、双轮驱动”——工程管理专业新工科改革与引领的探索实践

面对国家战略需求以及新一轮科技革命和产业变革所带来的严峻挑战,工程管理专业建设正面临转型升级的迫切需要。西安建筑科技大学工程管理专业始终坚持改革探索与自我革新,在新工科背景下,努力探索工程管理专业改造升级路径、人才培养模式、课程体系建设、创新体系建设、平台建设和机制体制设计;坚持“主动面向”,以国家重大战略需求和科技创新的双轮驱动为导向,拓展专业内涵,加速科教融合,积极探索和重构专业课程体系;创新“精课程、微课堂”的课程建设和教学模式;开发“工程管理云专业”平台,大力推动“2+X”创新体系建设,构建“师生成长共同体”。为探索和形成工程管理专业发展的新模式、新路径、新体系提供重要支撑和经验借鉴。

功率分配方式对船用双堆燃料电池热管理效果分析

为研究船用双堆质子交换膜燃料电池(PEMFC)功率分配方式、热管理系统布置形式对热管理系统性能影响,基于AMESim软件建立了船用双堆PEMFC系统仿真模型,根据试验数据验证了仿真模型的可靠性。在此基础上,以串联式、并联式与旁通式热管理系统模型为研究对象,研究在变载工况下采用功率平均分配、逐级分配策略对电堆进出口冷却水温差的影响规律,最后比较在功率平均分配策略下3种热管理系统布置形式的性能。结果表明,3种热管理系统中电堆进出口冷却水温差均会在不同程度上受到功率分配策略的影响,在功率平均分配策略下,采用串联式热管理系统布置形式更有利于提高电堆内部温度一致性。

地下水超采管控体系及水量水位双控体系研究进展

以《地下水管理条例》中空间管控和目标管控思想为指导,分类梳理了地下水超采管控体系和水量水位双控体系的研究进展及现状。地下水超采管控体系研究与我国具体国情结合日益紧密,但目前相关管理制度与规范仍亟待完善;地下水超采管控体系明确了已发生超采区域的划分标准,但缺少统一且全面的地下水资源管控区划标准;地下水水量水位双控体系克服了由于水位或水量单方面控制、未考虑地下水水位与水量的内在联系、难以有效缓解由水位或水量变化而导致的生态环境问题的局限性;水量水位双控体系研究的难点在于通过监管点状分布的水位控制面状分布的开采量,建议通过管理特定时间的水位控制一定时段的地下水开采量,或通过管理面状开采量来对点状水位进行控制。

职住学空间测度及儿童通学决策的影响机理——以昆明市双职工家庭为例

当代城市家庭选择居住地时往往将临近学校作为重要参考,在缩小学住距离的同时加剧了职住分离。选取昆明市561个有学龄儿童的双职工家庭为研究对象,分析家庭空间分异对儿童通学决策的影响。首先,基于时间地理学理论构建考虑职住学三个锚点的家庭活动空间及测度理论模型。其次,根据测度结果将家庭活动空间划分为职住学就近型和职住学分离型两类。最后,建立结构方程模型分别探究两种模式下父母工作时长以及父母儿童组合时间窗对儿童通学时空行为的影响。研究结果表明:相对于学住距离,父母的职住距离和工作时长对通学行为的影响更为显著,因此就近入学政策对于促进儿童步行上学的作用有限;对于职住学分离型家庭,父母下班与儿童放学组合时间窗的宽裕程度对儿童出行影响显著,组合时间窗越宽裕,儿童小汽车出行的可能越大,因此弹性放学时间的效果也有待商榷;儿童在通学行为中的性别差异主要在职住学分离型家庭中体现。

从技术到法律:AI换脸短视频的侵权风险与规范治理

AI换脸技术的出现活跃了短视频创作,短视频平台的AI换脸视频大致分为“存在原视频作为换脸基础的换脸视频”和“不存在原视频作为换脸基础的换脸视频”两类,前者主要涉及版权侵权问题,后者主要涉及人格权侵权问题。AI换脸短视频领域侵权风险治理规则主要依靠著作权法和民法典的有关规定。展望未来,AI换脸应用在短视频传播领域的治理需要在创作自由与私权保护之间寻求平衡。AI换脸技术应用管理和内容标识管理是消解深度合成技术隐匿性的有效方式。同时,关注平台“侵权者”和“治理者”双重角色是解决短视频领域久治不愈的症结所在。

高校实验室双重预防机制安全管理模式探索

高校实验室安全风险具有客观上的多发性和多元性特征,其安全隐患都是由于人的不安全行为、物的危险状态、场所的不安全因素和管理上的缺陷造成的。分析高校实验室双重预防机制安全管理的理论依据,构建实验室安全风险分级管控和隐患排查治理双重预防机制,在环境类实验室安全管理中予以实施。通过对实验室进行年度风险辨识,制定标准进行风险评估分级管控;当出现风险管控失效产生隐患时,进行安全隐患排查、治理闭环管理,定期完善风险管控措施并补充风险辨识内容,形成风险隐患一体化循环管理流程。双重预防机制安全管理模式的探索研究对高校实验室安全管理、遏制重大安全事故的发生具有重要的现实意义。

“技术—组织”联合情境如何促进双元创新协同——一个有调节的链式中介模型

数字技术冲击给组织带来巨大变革,在此情形下,企业如何把握数字技术与组织情境的联合作用,实现数字环境下协同创新,成为制造企业亟须关注和解决的现实问题。根据TOE框架,基于知识基础观、动态能力理论和双元创新理论,探究技术—组织联合情境对企业双元创新协同的影响机制与边界条件,采用层级回归分析法对制造企业调研数据进行研究。结果发现:①数字化转型对双元创新协同、知识管理和动态能力具有显著正向影响;②知识管理、动态能力对双元创新协同具有显著正向影响,且对数字化转型与双元创新协同关系发挥正向链式多重中介作用;③组织惯性负向调节数字化转型与知识管理、动态能力、双元创新协同的正相关关系,且对动态能力中介效应的负向调节作用显著,而对知识管理中介效应的调节作用不显著。研究结论对于制造企业把握数字化转型重点方向、促进知识管理和动态能力提升、实现双元创新协同具有重要意义。

高管贫困经历与企业内部薪酬差距缩小:自我约束效应和移情效应的共同作用

使用2011—2021年沪深A股上市公司相关数据,探究高管贫困经历对企业内部薪酬差距的影响。研究发现,企业管理层的贫困经历能够缩小企业内部薪酬差距。机制分析表明,总经理的贫困经历可以通过“自我约束效应”降低在职消费水平,减少管理层薪酬;董事长贫困经历具有“移情效应”,能够提高企业职工薪酬占比,但同时董事长贫困经历也会削弱企业内部薪酬差距的激励作用,降低企业收入绩效,导致其对普通员工薪酬发挥的作用有限。对企业异质性特征的分析发现,总体而言,管理层贫困经历在非国有企业、员工议价能力较低企业、劳动密集型企业样本中发挥了更为积极的缩小企业内部薪酬差距的作用。

电商客服对话提示信息的双任务操作注意分配研究

目的 为研究双任务操作下,不同类型对话提示信息对电商客服注意分配的影响.方法 选取视觉呈现位置和三种常见提示音为自变量,设计了三种实验情景:只呈现两种位置差异的视觉信息、只呈现三种不同的听觉信息、同时呈现视听觉组合信息,对被试人员操作过程中的反应时及正确率进行了分析.结果 电商客服人员在同时接收视听觉对话提示信息时,存在注意分配,视觉上更偏向左侧,听觉上更偏向于机械提示音,当位于左侧的视觉对话提示信息与钢琴音同时出现时,电商客服的操作表现优于其他组合的视听觉对话提示信息.结论 研究对话提示信息双任务操作的注意分配,为电商企业提升客服注意力培训、设计对话提示信息具有一定指导意义.

面向“双碳”战略,科研引领创新人才培养——《环境规划与管理》课程教学创新探索与实践

二十大报告指出“双碳”战略是一场广泛而深刻的社会经济系统性变革,对人才的专业性、创新性和实践性都有很高的要求。强化国家战略目标、市场需求与学科建设间的联系,及时调整和更新传统教学理论和教学模式,已成为“双碳”战略背景下高等教育改革的重要方向。如何以“双碳”牵头,推动人才培养提质增效是一个值得思考的命题。选择《环境规划与管理》课程为对象,重点针对双碳知识要素的时滞性、实践特色不足、教学效果评估单一的现实问题,以“双碳”目标驱动课程教学体系创新探索,通过双碳政策梳理以及低碳消费案例解析重构了教学内容,设计低碳消费行为实验、碳积分核算实验以及绿色选材实验增加了课程的教学实践环节,融合问卷量表与电生理技术量化分析学习效果丰富了教学评价方法,形成了课程体系闭环路径,为探索“双碳”人才培养的课程体系建设提供了参考。

e-Science环境下科研活动与科学数据一站式管理平台研究

在信息化、数据密集化(e-Science)科学研究新形势下,规范高效地管理科研活动和科学数据,对科研创新突破、资源集成共享具有十分重要的意义。文章在调研多个研究团队科研数据管理现状的基础上,基于科研—数据双生命周期模型,构建了科研活动与科学数据的一站式管理平台。初步探讨了平台的系统架构与功能实现,详细阐述了平台的用户角色管理及权限分配策略,以期这个新型平台能为科研数据管理服务工作提供一些新的思路和方法。