Research of Energy Star:Small Network Equipment Specification

针对日益备受关注的小型网络设备能耗问题,介绍了美国能源之星计划对小型网络设备能效测试的进展情况,重点阐述在测试功耗前各相关网络设备的配置要求,在此基础上对相应的小型网络设备功耗测试方法进行详细解析。Aiming to deal with energy efficiency for Small Network Equipment,the current development of Energy Star:Small Network Equipment specification was presented.Then,configuration requirements before testing were introduced.Finally,the detail information for corresponding small network equipment power test methods was analyzed

Quick estimation of end to end PQoS of image

本文介绍了一种新型的利用图像活动性(IAM)快速估计水下图像端到端体验质量的方法。首先引入结构相似度(SSIM)作为图像感知服务质量(PQo S)参数评价图像质量,将图像初始活动性(IAM)作为区分图像内容的本征参数;随后基于质量向量(QV)的概念,分别分析了非压缩图像的结构相似度,图像初实活动性与无条件丢失概率(SSIM-IAM.-ulp)之间的联合特性,以及压缩图像的结构相似性,压缩率与无条件丢失概率(SSIM-IAM.-ulp)之间的联合特性。最后,在上述联合特性的基础上提出了劣化图像SSIM的预测算法。测试实验证明,该类算法有较高的预测准确率,预测误差最低可达0.8%。This paper introduces a novel method for quick estimating the end to end Perceived Quality of Service( PQo S) of underwater image based on image activity measure( IAM). Structure Similarity( SSIM) is first introduced as the evaluation standard of image PQo S parameter to evaluate the quality of image,while the IAM of original image is utilized as an intrinsic parameter to discriminate the image contents. Then,based on the concept of quality vector( QV),the SSIM-ulp-IAM0 features for non-compressed picture are analyzed,and the SSIM-CR-ulp features for compressed picture are analyzed as well. On this basis,the prediction algorithm based on SSIM for the degraded image is proposed. Test experiment result shows that this kind of prediction algorithm has high accuracy rate,and the lowest prediction error reaches to 0. 8%.国家自然科学基金面上(61571377;61471308)项目资

Analysis on Influential Factors of the Preference for Old-age Support among Elder People in Urban and Rural Areas of Xiamen

目的研究城乡老年人养老意愿的影响因素,为优化配置养老资源和提高老年人生活质量提供依据。方法采用多阶段抽样方法对厦门市60岁以上常住老年人进行问卷; 调查,采用多分类logistic回归分析城乡老年人养老意愿影响因素。结果有效调查问卷城区652份、农村622份。城、乡老年人选择家庭养老、社区居; 家养老、机构养老和暂未考虑比例分别为67.5%、18.6%、12.7%、1.2%和71.1%、23.1%、4.7%、1.1%,差异有统计学意义(; P <0.05),且城乡老年人在文化程度、患慢性病、子女是否提供养老费、退休金以及距最近医疗单位的距离等方面分布差异也有统计学意义(P; <0.05)。以家庭养老为参照,城乡,年龄大于80岁者更倾向于机构养老(城、乡的OR(95% CI)分别为3.84(1.845; ~7.99)和3.64(1.07 ~12.47)),距最近医疗单位较远者倾向于社区居家养老(城、乡的OR(95% CI)分别为1.73(1.04; ~2.86)和2.12(1.31; ~3.42))。但城区老年人文化程度较高、退休金较多和子女有提供养老费者更愿意选择非家庭养老,而农村在婚老年人倾向于选择机构养老。结论城乡老年人; 养老意愿均以家庭养老为主,但农村老年人更倾向于社区居家养老,城区老年人更倾向于机构养老,城乡间的经济、文化差异是造成这种差异的主要原因。建议除强; 化家庭养老的功能外,应针对城乡差异合理配置城乡养老资源。Objective To study the influential factors about the preference for; old-age support among the urban and rural elder people,and provide; theoretical basis for optimum allocation of supporting resources along; with greater improvement of life quality for the aged. Methods Based on; the multi-stage sampling method,a survey was conducted among senior; residents older than 60 years old in Xiamen by means of questionnaire.; Chi-square test was used to compare the differences of basic information; between the elderly who lived in the urban and rural areas while; multinomial logistic regression played a role in analyzing the factors; which influenced the old people,s preference for old-age support.; Results 1274 valid questionnaires were obtained, including 652 from; urban and 622 from rural areas. The percentage of elderly people who; would like to live with family support, community-based support at; home,organization support or choice not-considered were 67. 5%,18.; 6%,12. 7% and 1. 2% in urban areas,and as for the countryside those were; 71. 1%,23. 1%,4. 7% and 1. 1%,which were statistically significant (P <; 0. 05). The differences between urban and rural old people were also; statistically significant on the aspects of their education levels,; condition of chronic diseases,pension costs from children,retirement; pension,distance from the nearest medical unit (P < 0. 05). To take; family support as reference,no matter in urban and rural areas,the; elderly older than 80 years old were more likely to choose organization; support;and people who lived far away from the nearest medical unit; would prefer community-based support at home. However,the urban old-aged; with higher education levels,more retirement pension and who got pension; from children were more likely to live without family support,while; rural old people who got married preferred organization support.; Conclusion Family support was the main choice for the elderly from both; urban and rural areas. However,the aging in countryside preferred; community-based support at home and urban old people tended to choose; organization support. The difference of local economy and culture; between urban and rural areas was the key reason. Therefore,apart from; strengthening the function of family support,pension resources should be; appropriately allocated aimed at those differences between urban and; rural areas.国家自然科学基金项目; 厦门大学大学生创新训练项

近海生态系统碳汇过程、调控机制及增汇模式

海洋是地球上最大的碳库,发挥着全球气候变化缓冲器的作用.蓝色碳汇,简称蓝碳,即由海洋生态系统捕获的碳(主要是有机碳),是海洋储碳的重要机制之一.; 蓝碳最初认识的形式是可见的海岸带植物固碳.其实之前没有得到足够重视的、看不见的微型生物(浮游植物、细菌、古菌、病毒、原生动物)占海洋生物量90%; 以上,是蓝碳的主要贡献者.中国陆架边缘海占国土总面积的1/3,碳汇潜力巨大,亟待研发.本文以近海生态系统碳汇过程、调控机制及增汇模式为主线,论述; 了近海生态系统结构与碳循环功能特征、碳汇形成过程与机理,并结合近海碳汇在沉积记录中的地史过程演变探讨了自然过程和人类活动对碳汇的可能影响,展望了; 碳汇工程在增加近海海洋储碳能力方面的应用前景.国家重大科学研究计划项目; 国家重点研发计划项目; 国家自然科学基金项目; 国家海洋局全球变化与海气相互作用专项项

闽南文化研究国际笔谈会论点选载

2013年12月21日,由闽南师范大学闽南文化研究院主办的“2013闽南文化研究国际笔谈会“在国际学术交流中心召开。来自海峡两岸及日本、新加坡等国家的闽南文化研究方面的专家、学者二十余人出席了会议。会议围绕着闽南文化的内涵、外延及特征,闽南文化的当代价值与社会功能,闽南文化研究的理论与方法,闽南文化的跨文化阐释,闽南文化的世界性及其意义,闽南文化与两岸交流,闽南文化的生态保护,闽南文化学科建设与人才培养等议题展开了深入的研讨,言简意赅,探幽发微,对当下闽南文化理论研究势必产生积极的影响。本期节录专家们的精彩发言,以飨读者,也希望由此来带动和促进闽南文化研究的进一步升华

Reduced-reference image quality evaluation model based on visual weighted index figure

为了进一步提高半参考图像质量评价的准确性,设计了一种半参考图像质量评价方法,该方法建立传输前后图像特征的变化与图像主观质量之间的联系。选择映射机制与合理的特征,设计了能够表征特征变化情况和传输图像劣化位置的参考图像,在接收端对参考图像进行全参考质量评价就能判断特征变化情况。并引入两层HVS特性,分配图像不同分块的质量权重,将此质量权重作用在对参考图像的质量评价中,通过对参考图像进行基于视觉加权的全参考质量评价,来实现对传输图像的基于视觉的加权半参考质量评价。该方法比对参考图像采用传统的,不加权的PSnr方法以及SSIM方法在评测准确性上分别高出了18.65%,2.71%,单调性上分别高出17.86%,11.97%,一致性上分别高出55.18%,23.45%。In order to further improve the accuracy of semi-reference image quality evaluation,a kind of semi-reference image quality evaluation method is presented,which establishes the relation between changes of image feature after transmission and subjective quality of image.In the quality evaluation system,mapping mechanism and rational characteristics are chosen.The reference image can represent the change of image feature and location of deterioration of the image.So the changes of feature can be figured out in receive end by full reference quality assessment of reference image.Two layers of HVS characteristics are used to distribute the quality weight of image blocks,which will be used in quality assessment of reference image.Through the full reference quality assessment based on the visual weight of reference image,the semi-reference image quality assessment of transmission image can be achieved.The evaluating accuracy of this method is respectively higher by 18.65% and 2.71% than psnr and ssim,while the monotonicity of this method is respectively higher by 17.86% and 11.97%,and the consistency is respectively higher by 55.18% and 23.45%.国家自然科学基金项目(61471308);国家自然科学基金青年项目(61001142); 中央高校基础研究项目(2011121050)资

Real-Time Measurement for Experience Quality of Underwater Acoustic Voice Communication

水声语音通信质量的实时测量是保障通信质量的重要环节,利用实时测量结果可及时调整语音业务的调制参数,提高链路的自适应能力。本文提出了一种基于参数表示的语音通信质量实时估测模型,该模型提取语音3个特征参数,即:Mel频率倒谱系数(Mel-frequency cepstum coefficient,MFCC)、线性预测倒谱系数(Linear predictive cepstrum coefficient,LPCC)及加权对数谱(Log spectral deviation,LSD),构建3种特征参数的权重谱失真测度。利用失真测度与接收语音质量(Perceptual evaluation of speech quality-mean opinion score,PESQ-MOS)之间的映射关系,建立语音质量估测模型。引入动态MFCC(Dynamic Mel-frequency cepstrtum coefficient,DMFCC)的谱失真测度作为质量估测模型的调节因子,使估测系统具有更好的适应性。实验及海测结果显示,利用本模型估测的语音MOS值与人主观感受误差较小,具有一定的实用性。The real-time measurement of quality of the underwater acoustic voice communication is crucial to communication quality.Real-time measurements can help to adjust voice modulation parameters timely and improve the adaptive ability of link.An objective assessment model for voice quality is proposed based on parameter extraction,based on the underwater acoustic channel characteristics.Three feature parameters of voice are extracted:Mel-frequency cepstrum coefficient(MFCC),linear predictive cepstrum coefficient(LPCC)and log spectral deviation(LSD).The three parameters form the weight spectral distortion evaluation.the mapping relationship of distortion evaluation and receive voice quality of perceptual evaluation of speech quality-mean opinion score(PESQ-MOS)is used to conduct quantization.Dynamic Mel-frequency cepstrum coefficient(DMFCC)spectral distortion evaluation is also introduced as regulatory factor,which improves the adapt-ability.The results of simulation and sea test show that the measured MOS via the assessment model is close to PESQ-MOS,which indicated the model has practical value.国家自然科学基金(61471308,61571377,61501386)资助项目;; 山东省计算机网络重点实验室(山东省计算中心)开放课题(SDKLCN-2013-02)资助项

Effect of childhood trauma on depressive mood: a regulated mediation model

目的 为明确童年期创伤经历对抑郁情绪的作用机制，本研究构建了一个有调节的中介模型，考察在新兵中愤怒表达在二者关系中的中介作用以及压力的调节作用。方法 418名男性新兵为被试，采用问卷法对童年期创伤经历、压力、愤怒表达及抑郁情绪进行调查。结果 (1)在控制年龄、学历、家庭所在地、是否独生和父母关系后，童年创伤对抑郁情绪具有显著的正向预测作用；(2)愤怒对内表达、愤怒对外表达和控制愤怒对外表达能够在童年创伤经历与抑郁情绪的关系中起中介作用；(3)童年创伤经历对抑郁情绪的直接预测作用受到压力的调节。结论 引导新兵合理地表达愤怒情绪，对其抑郁情绪及其心理社会适应服务具有意义。</p

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel