基于TMS320DM8168的嵌入式高清视频系统

以TI公司的TMS320DM8168处理器为核心,实现高清视频采集回放系统。设计一种文件管理策略,将视频文件的时间数据和图像数据分离,提高了文件播放的效率。解决了高清视频的实时压缩存储解码回放问题。     

The influence of slotted floors on the bioclimatic traditional Galician agricultural dry-store structure (hórreo)

Granaries (hórreos) are bioclimatic conservation structures with various forms that have been used for over 2000 years in different countries across Europe and Asia. Galician raised granaries built upon “staddle stones” (pillars with a rodent-proof cap) are specialised barns. The importance of airflow in the preservation of stored grain is based on the use of air as an energy exchange fluid for exchanging heat or water with the grains. The preservation system is based on continuous ventilation inside the bin. Some granaries do not have a wooden slatted floor with gaps, although they should. The gapped, slatted floor particularly influences the thermodynamic behaviour, which is powered by solar radiation, improving ventilation efficiency and internal temperature regulation. This paper shows the important influence of floor grooving on improving grain conservation via better ventilation and limiting the rise in the internal temperature when the granary is subjected to solar radiation.     

采后1-甲基环丙烯处理对绿芦笋贮藏品质的影响

研究了采后1-甲基环丙烯（1-MCP）处理对绿芦笋贮藏品质的影响。结果表明,1-MCP处理可明显抑制绿芦笋贮藏过程中的呼吸作用;对VC和叶绿素含量的下降、丙二醛积累均具有抑制作用;提高了超氧化物歧化酶的活性,降低了过氧化物酶和苯丙氨酸转氨酶的活性,从而延缓了嫩茎衰老进程,对减少芦笋采后损失和保持品质,具有较好的作用。其贮藏期在室温下可延长2～3d,4℃下可延长5～10 d。     

Studies on low-temperature salt-hydrate for thermal storage applications

A novel thermal-energy storage concept involving the use of salt-hydrates such as sodium thiosulphate pentahydrate, Na₂S₂O₃·5H₂O is under investigation. With fusion temperatures of many salts lying between 0 and 100°C, such substances may be considered as likely materials to be used in conjunction with solar energy flat-plate collector systems for domestic use. Phase change storage or latent heat storage is concluded to be a promising technique for storing solar energy. The solid-liquid transformation of salt-hydrates is actually a dehydration or hydration of salt, although this process resembles melting or freezing thermodynamically. Three types of behaviour can be identified: congruent, incrongruent, and semicongruent melting. None of the congruent melting salt-hydrates have been judged for use in thermal storage because of cost and safety considerations.     

全球网络视频业务发展现状分析

在三网融合的大趋势下,网络视频业务正在崛起,并逐渐对传统电视形成替代效应。其中互联网电视的发展还带来了新的开放平台,如GoogleTV和Apple TV。目前,网络视频产业的盈利模式主要为广告收费和内容收费;在与互联网融合方面,世界各地的思路也不尽相同。这些都给我国相关产业带来了很好的借鉴。     

论生活形态研究对家具卖场设计的重要性

中国己经成为世界家具生产大国、第一出口大国。国内消费水平上升,家具行业蓬勃发展。不同类别的家具有着自身不同的风格特点,其面对的消费群也不同,而他们的消费倾向的不同,从根本上来说,是由其生活形态的不同所决定。因此,了解消费者的生活形态,找出市场需求,才是家具卖场展示设计最根本的问题。     

亮度、照度水平对家具专卖店氛围的试验研究

采用客观数据测量和主观评价相结合的方法,探讨了四种照明条件与家具专卖店喜好性氛围之间的关系。研究表明：重点照明的亮度为高强度,环境照明和墙面照明的亮度都为低强度时,喜好性氛围最强。进一步分析表明：喜好性氛围与场景的光分布均匀性和亮部集中区域有关,光分布不均匀以及亮部集中在展示产品部位时,且重点照明系数较高时喜好性得分偏高。研究结论为现实中家具专卖店的光环境设计以及陈设布置提供依据。     

固态发酵调味品保鲜储存的研究

分析了活性微生物、气候条件等因素，使腐乳、豆豉、豆酱等固态发酵调味品产生胖袋、变质的机理，提出使用防腐剂的同时配合巴氏灭菌、真空包装等全方位保鲜措施，建立加速销售的“保鲜”新理念。     

壳聚糖涂膜对酱牛肉贮藏性能的影响

采用可食性壳聚糖涂膜剂对酱牛肉进行处理，通过对产品的感官品质和微生物检测，筛选出对壳聚糖感官品质无不良影响，同时对微生物繁殖具有抑制作用的试验组合。试验结果显示，0．5％的醋酸溶液浓度对酱牛肉的感官品质无不良影响，随着壳聚糖浓度的增加抑菌作用增强。对照组的酱牛肉在冷藏条件下安全存放期仅为3d-4d．0．4％和0,6％的处理组可存放6d，而0．8％和1．0％处理组可延长9d。     

物联网的元数据体系初探

网络的意义不仅是连接,更重要的是通过互动演生出来的种种可利用特性。要让物联网动起来的必要条件是赋与"物"以标识和元数据。探索建立物联网的元数据体系,建议制定标准,并以此为基础开发应用。