基于用户体验的游戏声效反馈延迟研究

目的研究第一人称射击游戏声效反馈延迟对用户体验的影响,为游戏声效设计提供指导。方法在第一人称射击游戏中设置不同的声效反馈延迟,进行实验,记录用户得分,并结合用户主观评分进行对比研究。结果得出游戏声效反馈延迟对用户游戏体验的影响。当游戏声效反馈延迟低于10ms时,用户无感知,当声效反馈延迟大于10 ms但小于50 ms时,用户对于声效反馈延迟有感知但不敏感,当声效反馈延迟大于50 ms时,声效反馈延迟越高,用户体验越差。并且相对而言,状态声效反馈延迟对用户游戏体验影响更大。结论游戏声效反馈影响游戏的交互性和流畅性,在游戏声效设计中,应当考虑声效反馈延迟对用户游戏体验产生的影响,并且从认知和感知角度合理地运用声效反馈,减缓反馈延迟对用户体验的负面影响。

反馈效症学说的源流、概念及鉴别

“反馈效症”一词主要脱胎于《伤寒杂病论》,为张仲景无形中建立的一种异常精确的反馈体系。中医在治疗疾病过程中,需要根据患者反应,对诊断和治疗的正确性作出判断,根据系统的反馈,为临床提供决策。本文整理了其源流、基本概念和分类,提出了具体应用方向,以期为正确治疗患者抢占先机。

群体性事件的发生与应对:政治沟通的视角

在群体性事件中,政府对信息的有效沟通与控制对于群体性事件的预防、防止事件的蔓延和升级、应对和解决有着重要的意义。政府应着力提高其沟通能力,确保信息的保真度,防止嗓音和对信息的扭曲、失真,提高政府的信息负荷能力和记忆能力;增强政府对环境的反馈能力,有效地处理在反馈过程中的负荷、时滞、增益以及领先的问题;提高政府的学习能力,综合利用好可动用的资源,恰当地处理好对信息的分解与整合。

Markov Quantum Feedback Control Based on Homodyne Measurement of a Two-Qubit System

We consider the system consisting of two qubits collectively damped, with the output being unit-efficiency measured and subsequently fed back to control the system state. Our primary goal in this paper is （i） to solve the feedback-modified master equation, （ii） to demonstrate the ability of feedback control based on the solutions, and （iii） to pick out different steady states by choosing different driving strengths and feedback strengths to counteract the effects of both damping and the measurement back-action on the system. We further investigate some properties of the equilibrium steady state, its distribution probability and entanglement vs. the driving and feedback amplitudes. We find that in our feedback model feedback plays a negative role in producing entanglement.

The Impacts of Human Resource Management Practices on the Performance of Enterprises in Abidjan(Cte d'Ivoire)

In this paper,we theorize about the impacts of human resource management（HRM） practices on enterprises＇ performance in Abidjan（Cote d＇Ivoire）.Specifically,we emphasize the correlation between HRM practices and the perceived enterprise performance.A factor analysis of different HRM practices was utilized.The exploratory factor analysis on the HRM practices for managerial employees revealed three HRM dimensions：employee development,feedback systems,and pay/organization.A separate factor analysis for HRM practices for non-managerial employees led to the same conclusions.These three factors resemble those obtained in previous empirical study and discussed in the theoretical HRM literature.Therefore,the relationship among these three HRM dimensions and their relationship with enterprise performance was examined in the present study to facilitate comparison between managerial and non-managerial employees in the Ivorian context.

Compensation of Dead-Time Effect of Speed Sensorless Vector Control System

The key of speed sensorless vector control system lies in the accurate orientation of magnetic field. In some field-oriented algorithms, the integrator of observers and the dead-time effect bring in system errors during the estimation of field position. In this paper, a saturated feedback integrator is used, and the dead-time effect is compen- sated by current positive feedback. Experiments were carried out on the hardware platform of MCK2407, with chip TMS320LF2407 from TI Company. The results show that the prooosed method is simole and effective, and the accuracy of field position is improved.

A Case Study Survey of the Impact of the Inductive Loads on Power Quality

Power quality is a complex term that is defined by the legislation, but also as an obligation of the supplier and customer. The customer must return the negative effects of its consumers （taking reactive power, harmonic generation, phase unbalance） down to the prescribed limits. This primarily refers to the presence of non-linear consumers, leading to distortion of the basic parameters of voltage and current, in steady or transient conditions, and therefore the deformation of waveform. One way to reduce the negative feedback effects, especially with inductive loads, is the reactive energy compensation. The paper presents one of the solution for reactive power compensation, applied on the pumping station of public company ＂Waterworks and Sewerage---Bar＂, Bar.

The Efficacy of Peer Feedback in Turkish EFL Students’ Writing Performance

The overarching aim of this study is to find out the effects of peer feedback on Turkish EFL learners at pre-intermediate level. More specifically, the researcher sought to probe the strategies most suitable to these students by motivating them to scrutinize each other’s writings and develop their own perceptions of the advantages of becoming more critical of their writing. By addressing these aims and objectives, the researcher hoped to discover the advantages and effects of peer feedback in improving the writing skills of these students. A mixture of both quantitative and qualitative methods was considered appropriate to meet the needs of research. A questionnaire on attitudes and writing tests were used to collect primary data for the study in order to gain information about the needs of the students and the suitable strategies required for peer reading, examining, and giving feedback. Semi-structured interviews were also conducted to examine the students’ perceptions of peer feedback. Results of this study revealed that the peer feedback process helped learners in improving their writing performance as a result of which the students had a positive attitude towards using peer feedback in EFL classrooms. Based on the findings, implications for foreign language （FL） writing classes and suggestions for future studies are presented.

嵌入员工效能感的企业绩效改进流程设计及应用——以S公司为例

本文结合员工自我效能感对工作绩效改进的价值,分析了S公司在绩效管理中面临的问题及其原因,提出将自我效能感嵌入绩效改进螺旋模型,以优化企业的绩效改进流程。

Design of Injection Painting Bumper Magnets Pulse Power Supply for CSNS/RCS

The China Spallation Neutron Source (CSNS) Rapid Cycling Synchrotron (RCS) is a high beam power proton accelerator.The task of RCS injection system is to inject the negative hydrogen ions coming from linac into RCS by stripping method.This power supply demands that its output pulse current falling edge be controlled by the program. The power supply uses the IGBT power amplifying method to generate the pulse current and makes it follow the setting waveform by the power supply's feedback control system.The tracking error is one of the important specifications of the power supply.To satisfy the tracking error less than 2%,the frequency of the IGBT topology requested is more than 400kHz.The IGBT topology is connected by the IGBT H bridges in series and parallel,and works in the phase shifted method to divide the current,the voltage and improve the equivalent frequency.High power,high frequency,fast speed response and optimal feedback control strategy are the key to the good performance of painting bumper magnets pulsed power supply.

REACTIVE FOCUS-ON-FORM STRATEGIES AND EFL TEACHING IN CHINESE CONTEXT

It is generally agreed that focus-on-form has been one of the prevalent teaching methods in the area of second language acquisition and correspondingly received considerable attention. This paper focuses on reactive focus-on-form, introduces its corrective feedback strategies, discusses their contributions and the learner uptake in L2 classroom and addresses their implications for further research in this light in the Chinese context.

Current plant diversity but not its soil legacy influences exotic plant invasion

Current plant diversity can influence exotic plant invasion,but it is unclear whether there is a legacy effect of plant diversity on exotic plant invasion.As plant diversity can affect soil microbial communities and physio-chemical properties,which may cascade to impact subsequent exotic plant growth,we hypothesize that the soil legacy effect of plant diversity can influence exotic plant invasion.We conducted a plant–soil feedback experiment.In the conditioning phase,we trained soils by monocultures of 12 plant species from three functional groups(4 grasses,3 legumes and 5 forbs)and mixtures of 8 randomly selected species with all three functional groups from this 12-species pool.In the test phase,we grew the invasive plant Bidens pilosa with a co-occurring native grass(Arthraxon hispidus),with a co-occurring native forb(Pterocypsela indica)or with both in each type of the conditioned soils.The performance of B.pilosa relative to its native competitors varied depending on the functional type of both conditioning plant species in the conditioning phase and competing plant species in the test phase.Diversity of the conditioning plants did not influence the growth difference between B.pilosa and its native competitors.However,increasing diversity of the competing plant species reduced the performance of B.pilosa relative to its native competitors.Our results suggest that current plant diversity can reduce exotic plant invasion through increasing growth inequality between invasive and native plants,but the soil legacy effect of plant diversity may have little impact on exotic plant invasion.

Effects of neurofeedback on the short-term memory and continuous attention of patients with moderate traumatic brain injury： A preliminary randomized controlled clinical trial

Purpose： There are some studies which showed neurofeedback therapy （NET） can be effective in clients with traumatic brain injury （TBI） history. However, randomized controlled clinical trials are still needed for evaluation of this treatment as a standard option. This preliminary study was aimed to evaluate the effect of NET on continuous attention （CA） and short-term memory （STM） of clients with moderate TBI using a randomized controlled clinical trial （RCT）. Methods： In this preliminary RCT, seventeen eligible patients with moderate TBl were randomly allo- cated in two intervention and control groups. All the patients were evaluated for CA and STM using the visual continuous attention test and Wechsler memory scale-4th edition （WMS-IV） test, respectively, both at the time of inclusion to the project and four weeks later. The intervention group participated in 20 sessions of NFT through the first four weeks. Conversely, the control group participated in the same NF sessions from the fifth week to eighth week of the project. Results： Eight subjects in the intervention group and five subjects in the control group completed the study. The mean and standard deviation of participants＇ age were （26.75 ~ 15.16） years and （2Z60 ＋_ 8.17） years in experiment and control groups, respectively. All of the subjects were male. No significant improvement was observed in any variables of the visual continuous attention test and WMS-IV test between two groups （p _~ 0.05）. Conclusion： Based on our literature review, it seems that our study is the only study performed on the effect of NET on TBl patients with control group. NET has no effect on CA and STM in patients with moderate TBI. More RCTs with large sample sizes, more sessions of treatment, longer time of follow-up and different orotocols are recommended.

Control Strategy Research of a Selective Catalytic Reduction System for Heavy-Duty Application

An AdBlue dosing control strategy of the selective catalytic reduction (SCR) system is developed for a heavy-duty diesel (HDD) engine. The strategy includes a raw emission prediction model, an ammonia (NH3) coverage prediction model, a transient heat hysteresis correction algorithm, an NH3 leakage control model for transient operation conditions, and a feedback controller (FBC). FBC has been developed by using mathematical manipulation to change output signal of sensor based on cross-sensitivity of nitrogen oxide (NOx) sensor to NH3. The quantification of control parameters is based on experiments and Nyquist stability criterion. FBC is enabled in most test conditions to satisfy the stability requirements. NOxconversion (DeNOx) efficiency of SCR system is 82.4% in European steady-state cycle (ESC) test and 80.3% in European transient cycle (ETC) test, while the leakage of NH3 is under 10−5volume fraction in average. © 2017, Shanghai Jiaotong University and Springer-Verlag GmbH Germany.