Bounded careers in creative industries: Surprising patterns in video games

We contribute empirical evidence to the literature on careers in creative industries. It has been argued that boundaryless career patterns are at the core of creative industries. We question this widely held argument and show that the most innovative Japanese video game developers make use of employment models that prioritise stable employment and bounded careers linked to it. The paper makes several contributions: First, it carefully describes career development patterns of Japanese video game developers, which have so far not been documented. We hereby contribute to the literature on creative industries by adding an important empirical case of bounded career patterns. Second, we try to explain why Japanese firms stick to traditional practices by addressing the link of bounded careers to integrative capabilities, and discuss what this means for creative industries in general and for video games in particular. We argue that integrative capabilities matter also in creative industries.     

茭白苞叶中总黄酮提取及其体外抗氧化性能研究

运用超声波技术辅助提取茭白苞叶中的总黄酮,经正交实验得出茭白苞叶中总黄酮提取的最佳工艺参数:超声波功率700 W,温度60℃,料液比(g/mL)1∶60,乙醇质量分数浓度为60%,提取时间为35 min,茭白苞叶中总黄酮最大提取率为1.127%.采用抗坏血酸作为对照,全面测定了茭白苞叶总黄酮对超氧阴离子自由基、羟基自由基、DPPH自由基的清除率,以及还原能力、抗脂质过氧化活性和对食用油脂的抗氧化性的影响,结果表明,白苞叶中的总黄酮是一种有开发价值的天然抗氧化剂.     

Generation of digital textured surface models from hologram recordings

Digital sensors and fast digital image processing facilitate the use of pulsed holography for 3D surface measurement of moving objects. The real image of a hologram is reconstructed optically. A sequence of high-resolution projection images of the real image with a varying distance to the hologram is recorded digitally. Focus detection in this image sequence by digital image processing yields the shape of the recorded object. The image intensity serves as a precise pixel-matching texture. An application of this concept is the generation of a textured 3D computer model of a facial surface from a portrait hologram.     

Effect of phase mismatch on pseudo-phase-step analysis of time-average hologram recordings of vibration modes

I present the results of an experiment to demonstrate the effect of phase mismatch between an object vibration and a bias vibration in pseudo-phase-step analysis of time-average holographic interferograms of vibration modes. Pseudo-phase-stepping applies conventional phase-step equations to zero-order Bessel function fringes and during phase unwrapping corrects for the errors incurred. A circular disk vibrating in a quadrature combination of its two one-diameter modes was used as a test object and provided a 360 degrees phase distribution. The results indicate that the process has considerable tolerance to phase mismatch.     

基于立体视觉的机器人焊接遥操作研究

研究了在立体视觉辅助下的机器人焊接遥操作技术.将立体视觉显示技术和机器人遥操作技术相结合,显著提高了焊接遥操作系统的操作性能.自主开发了基于PC的页面交互显示的立体视觉系统,以空间鼠标作为输入机器人控制命令的手控器,精确地控制远端焊接机器人的定位和跟踪焊缝.深入研究了手动跟踪焊缝的控制算法和遥控示教技术,以提高焊接遥操作的灵活性.焊接遥操作在立体视觉辅助下比二维视频监控辅助下跟踪焊缝的精度有大幅度提高,能够遥控示教空间曲线焊缝,系统操作简单,灵活.     

双处理器实时视频拼接系统

当一些视频系统需更大观测范围,同时获得完整场景是一个问题.针对这种情况,提出一套基于FPGA和DSP双处理器协同工作的视频拼接系统,设计了包括双处理器、FLASH程序存储器、SDRAM数据存储器、SRAM数据存储器、视频AD和视频解码器等硬件结构.系统采集两路视频信号输入,对其进行数字视频转换,然后由FPGA做基本图像处理,并将其送入SDRAM进行存储.DSP将初步处理后的图像数据取出,并对其进行图像配准和图像融合.为了保证图像的实时性,系统采用实时高效易实现的改进的PSO算法实现图像配准,采用平均加权法实现图像融合.实验结果表明,此系统可对两幅720×576分辨率、25帧/秒的视频图像进行实时拼接,满足所需大视场视频图像要求.     

基于人物关系分析的视频自动摘要算法

为了更好地反映视频中的语义内容,在系统总结已有的基于低层特征的视频自动摘要算法的基础上提出了两种基于人物关系分析的新摘要算法,即适应于快速预览需求的One-Shot摘要算法和适应于个性化定制需求的用户自适应摘要算法。与已发表的大部分基于低层特征的视频摘要算法相比,提出的这两种摘要算法能够更好地反映视频中的语义信息。在实际电影视频数据上的实验结果证明了所提算法的有效性。     

Durability of high surface area platinum deposits on microelectrode arrays for acute neural recordings

The durability of high surface area platinum electrodes during acute intracerebral measurements was investigated. Electrode sites with extremely rough surfaces were realized using electrochemical deposition of platinum onto silicon-based microelectrode arrays from a lead-free platinizing solution. The close to 1000-fold increase in effective surface area lowered impedance, its absolute value at 1 kHz became about 7 and 18 % of the original Pt electrodes in vitro and in vivo, respectively. 24-channel probes were subjected to 12 recording sessions, during which they were implanted into the cerebrum of rats. Our results showed that although on the average the effective surface area of the platinized sites decreased, it remained more than two orders of magnitude higher than the average effective surface area of the original, sputtered thin-film platinum electrodes. Sites with electrochemical deposits proved to be superior, e.g. they provided less thermal and 50 Hz noise, even after 12 penetrations into the intact rat brain.     

视频技术在公路车辆监测系统中的应用

随着城市建设的发展和交通流量的大幅提高，迫切要求对交通控制和监督实现自动化。因此，近年来视频技术在公路车辆安全监测系统中的应用迅猛发展。本文从道路交通安全现状出发，介绍了机动车辆视频监测系统的工作原理，在高速公路监控系统中的实际应用，以及其优缺点和应用前景。     

基于DSP的路障视频监控报警硬件系统

针对传统安全监控措施不完善的问题，设计了一套用于监控铁路路障的视频监控及报警硬件系统。系统中采用了，TI（TExAs INsTuMENT）的多媒体处理芯片TMS320DM642作为主要处理器，用于对系统所采集到的视频信号进行识别与处理，当系统判定路口中存在路障时，则通过无线收发器对列车发出报警信号，列车员收到信号后便可以对列车制动从而避免事故的发生。整个系统分为两个部分，一部分设计为架设在铁路口边，另一部分则设置在列车上。其它主要选用的器件还有视频解码芯片TVP5150PBS和无线收发芯片nrf401等。     

自动萃取仪对水中油类的萃取效率研究

根据国标GB/T16488-1996红外光度法测定水质中石油类和动植物油,对自动萃取仪萃取水中油类的萃取效率进行测定研究。探讨了不同条件及不同成分的油类污染物对萃取效率的影响。结果表明,氯化钠对四氯化碳萃取效率影响较大,食用油在四氯化碳中的萃取效率比在水中的高15%～20%。     

基于图象模式的CCD视频信息采集技术

以某型反坦克导弹CCD观测器测试系统的研制为背景,结合典型CCD观测器的性能及工作原理,对观测器的核心输出信号即视频信息的提取及关键软硬件设计进行了较为深入的研究,运用数字处理和视频采集技术,给出测角精度、抗干扰能力和灵敏度的分析处理方法。系统技术先进,操作界面友好,分析直观,工作可靠,很好地满足使用要求。     

一种累积帧差视频对象分割算法

经过对视频序列的多帧累积,利用帧间变化信息可求得帧差之和,并用数学形态学方法处理之后,即可提取出对象边界。由此,提出了一种累积帧差的视频对象分割算法。实验结果表明,该算法能对低比特率视频序列中运动较为缓慢、背景相对简单的对象进行有效的分割,而且所用时间较短,算法简单、高效。