MCS Selection Criteria Based on Performance Simulation for HSDPA

An adaptive modulation and coding (AMC) scheme integrated with multi-code transmission for high speed downlink packet access is presented and some modulation and coding scheme (MCS) selection criteria are proposed to maximize single user data rates. Based on link-level performance analysis, the MCS selection criteria are proposed with the constraints of QoS requirement, modulation level, channel coding rate and the number of available channelization codes. By allowing multiple transmission parameters changing, these criteria make the scheme more flexible to time-varying mobile channel with comparatively low complexity through a look-up table method. The AMC scheme is sensitive to the changes of channel condition and can save the channelization codes in an applicable way by applying these criteria.     

石墨基金刚石涂层电极的制备及性能研究

采用固体三氧化二硼，用热丝辅助化学气相沉积法在石墨衬底上沉积了掺硼金刚石涂层。用喇曼谱、扫描电镜及电导一温度关系研究了掺硼金刚石涂层的生长气压和掺硼浓度等主要工艺参数对涂层的形貌、结构及电学性能的影响和涂层的循环伏安特性。结果表明，石墨基金刚石涂层电极具有优良的电化学性能。     

酶解前后鹿筋体外抗炎活性与其氨基酸组成的相关性

目的:分析酶解前后鹿筋对TNF-α诱导的MH7A细胞抗炎作用的影响.方法:采用MTT法检测鹿筋天然蛋白(DSNP)和鹿筋酶解蛋白(DSEP)不同分子量的超滤组分的增殖抑制活性,筛选增殖抑制活性最佳的组分,测定活性组分对MH7A细胞分泌炎症因子(NO、IL-6)的影响,分析鹿筋酶解前后活性组分中氨基酸组成及含量.采用多元...     

晋江东石镇井林村古村落景观特色及保护对策探索

我国历史悠久、幅员辽阔,古村落数量众多且分布广泛。这些古村落是一种珍贵的、不可再生的物质文化资源。但在当前中国快速工业化、城市化的背景下,遭遇到全方位的冲击与挑战,亟待予以深入研究和及时保护。本文从景观资源特色的分析入手,对井林村的保护发展问题做了探索研究,通过梳理其历史地理脉络、自然资源禀赋、古村落发展脉络、建筑道路肌理、景观空间格局与特色等,为井林古村落的保护发展问题提出有针对性的适宜策略。