人工耳蜗儿童与助听器儿童选择性听取能力的比较研究

本研究采用三因素混合实验设计,比较了人工耳蜗儿童(CI)与助听器儿童(HA)在不同信噪比条件下(SNR=10,5,0),对不同难度材料(双音节词和短句)的选择性听取能力.研究结果表明:(1)在重建听阈与补偿听阈相似时,人工耳蜗儿童与助听器儿童的选择性听取能力的差异不显著;(2)两类儿童对词语和短句的选择性听取能力差异显著;(3)在不同信噪比条件下两类儿童的择性听取能力差异显著.本研究结果提示,若助听器能补偿到最适宜水平,则没有必要进行人工耳蜗植入.     

中国电影植入式广告现状分析

电影植入式广告又称“隐性广告”、“嵌入式广告”.作为一种新型媒体广告营销方式,植入式广告自90年代随着美国商业大片进入中国,随即以蓬勃之势迅速发展起来.一时间出现许多与广告“联姻”的中国电影,其中以冯氏的“非诚”、徐峥“泰囧”为翘楚.在电影、广告携手繁荣的表象下,也存在着不少问题与发展之危机.如何让广告与电影这对半路“夫妻”能和谐地一路走下去,电影《小时代》或许能给我们更多的启示.     

Negotiating reassurance: parents’ narratives on follow-up after cochlear implantation

This study presents an analysis of parental experiences on follow-up after cochlear implantation. Data were constructed in semi-structured, individual interviews with the parents of 14 children who use cochlear implants. Drawing on narrative analysis, the study explores parental responses to insecurity concerning children’s learning and development, as well as the meaning professional support holds for parents. In their response to insecurity, the parents handle the ‘trouble’ of insecurity through constructing two narratives of self: the parent-as-learner and the parent-as-teacher. The parents use these narrative constructions to negotiate reassurance, holding themselves responsible for future outcomes. The parents’ stories reflect a language of instrumentality, inducing a burden of responsibility. The study addresses the need to question to which extent parents should act as teachers and cautions that, while acknowledging the importance of parents’ involvement for children’s learning and development, this should not reduce the relationship to a functional, pedagogical one. The contribution of the study is to bring into conversation how the language of instrumentality affects the parents and how this invokes a need for rethinking parent support. Suggestions for further research are given.     

High density porous polyethylene material （Medpor） as an unwrapped orbital implant

Objective： To introduce the clinical effect among patients who received an unwrapped orbital implant with high density porous polyethylene material （Medpor） after enucleation or evisceration. Methods： Retrospective analysis of a series of 302 patients with anophthalmia who underwent placement of an unwrapped high density porous polyethylene orbital implant. We compared the patients （n=180） who accepted primary implant placement with those （n=122） who accepted secondary implant placement. Parameters evaluated included： age at time of surgery, date of surgery, sex, implant type and size, surgery type, the surgical procedure and technique performed, and complications. Results： The time of follow-up ranged from 2.0 to 58.0 months （mean 32.5 months）. A total of 5 of 302 （1.66%） cases had documented postoperative complications. The following problems were noted after surgery： implant exposure, 3 patients （0.99%）; implant removed due to orbital infection, 1 patient （0.34%）; ptosis, 1 patient （0.34%）. There were no significant complications＇observed in other 297 cases and all implants showed good orbital motility. The clinical effect of primary implant placement is better than that of secondary placement. Conclusion： High density porous polyethylene material can be used successfully as an unwrapped orbital implant in anopthalmic socket surgery with minimal complications. The material is well tolerated, nonantigenic and has low rate of infection and migration.     

USTC Develops the First Quantum Memory that Records Orbital Angular Momentum of a Single Photon

<正>Scientists from the CAS Key Laboratory of Quantum Information based at the University of Science and Technology of China(USTC)in Hefei have achieved significant progresses in developing highdimensional quantum memory.Under the leadership of Prof.GUO Guangcan and Prof.SHI Baosen,they achieved the storage and release of a single photon with a spatial     

Amniotic membrane transplantation for porous sphere orbital implant exposure

Objective： This study is aimed at describing the clinical outcome of amniotic membrane transplantation for exposure of porous sphere implants. Methods： A retrospective review of consecutive cases of porous sphere orbital implant exposure was carried out. Eight cases were presented between May 2004 and Oct. 2006 （5 males, 3 females; mean age 44.5 years）. Six had enucleation and two had evisceration. Exposure occurred in two primary and six secondary. Orbital implant diameter was 22 mm in seven cases and 20 mm in one case. Six patients are with hydroxyapatite and two with high-density porous polyethylene （Medpor） orbital implants. The mean time from implantation to exposure was 1.1 months （range 0.8-2 months）. All patients required surgical intervention. Results： The time of follow-up ranged from 3.0 to 28.0 months （mean 16.5 months）. Amniotic membrane grafting successfully closed the defect without re-exposure in all of these patients. The grafts were left bare with a mean time to conjunctiva of about 1 month （range 0.8-1.5 months）. Conclusion： Exposed porous sphere implants were treated successfully with amniotic membrane graft in all of patients. The graft is easy to harvest. This technique is useful, dose not lead to prolonged socket inflammation and infection, and it is valuable application extensively.     

Effect of basic fibroblast growth factor （bFGF） on the treatment of exposure of the orbital implants

Objective： To evaluate the efficacy and the indication of basic fibroblast growth factor （bFGF） in the treatment of exposure of orbital implants. Design： Retrospective and observational case series. Methods： We reviewed 41 patients （41 eyes） suffering exposure of orbital implants from Jan. 2000 to June 2006. The study group patients with mild exposure received combined treatment with bFGF and antibiotic drops, and while the control group patients with mild exposure were treated with antibiotic drops only. The study group patients with moderate and severe exposure received combined treatment with bFGF and antibiotic drops, and after 2 months they were subjected to amniotic membrane transplantation, while the control group patients with moderate and severe exposure underwent amniotic membrane transplantation after using antibiotic drops. Observation of the growth of conjunctival epithelium and comparison of the healing rate of the two groups. Results： The healing rates of the mild, moderate and severe exposure study group were 100% and 92.3%. The healing rates of the mild, moderate and severe exposure control group were 55.6% and 66.7% respectively. The difference of the healing rates of the mild exposure study group and the control group was significant （P=-0.033）. And the difference of the healing rates of the moderate and severe exposure study group and the control group was not significant （P=-0.167）. Conclusion： bFGF may promote obviously the healing of orbital implant exposure, particularly it can be the first choice for the treatment of mild degree exposure. For the moderate and severe cases, it can be administered before surgical repair to enhance neovascularization and will tend to increase the success rate of surgical repair.     

氯取代含氧亚甲基和亚胺桥键化合物的分子结构与光谱

采用密度泛函理论方法在B3LYP/6-31G*水平上计算研究氯取代含氧亚甲基和亚胺桥键化合物分子的几何结构,原子电荷,前线轨道能量和电子吸收光谱等性质。在此基础上使用含时密度泛函理论方法计算了分子第一激发态的电子垂直跃迁能,得到最大吸收波长λmax。计算表明,取代基氯的引入导致最大吸收波长红移。     

关于一类压缩映射的不动点的特征

研究了一类压缩映射存在不动点的充要条件 ,并且得到了两个不动点定理 ,所得的结果推广了Fisher、Kannan、Hardy和Rogers的工作 .     

A wideband frequency-shift keying demodulator for wireless neural stimulation microsystems

INTRODUCTION Cochlear implants have been very successful in restoring auditory function in individuals who suffer from sensorineural deafness (Rauschecker and Shannon, 2002). A generic cochlear implant usually consists of an external part and an internal part, which are connected by an inductive transcutaneous link, as illustrated in Fig.1. The link sends both data and power to an internal circuit. The output data from a speech processor are modulated and amplified suc-cessively so that…