This research presents a problem relevant to production scheduling for mixed models – production schedules that contain several unique items, but each unique i
We develop two new pricing formulae for European options. The purpose of these formulae is to better understand the impact of each term of the model, as well as
An infinitely long circular cylinder, consisting generally of a finite number of coaxial viscoelastic layers, surrounded by a deformable medium is considered. T
肺周围孤立性结节是胸外科的常见病,是影像学上直径3 cm以下的肺实质内单发、圆形或者类圆形的病灶,且并不伴有肺门淋巴结肿大或肺不张。早期手术治疗能取得较好的治疗效果,
对三元系统BaTiO3-Nb2O5-Ni2O3的微结构和介电性能进行了研究．XRD分析表明Nb2O5／Ni2O3协同掺杂的BaTiO3陶瓷为赝立方相结构；在掺杂1．0mol％Ni的BaTiO3中，Nb的固溶度〈4．0mol％．SEM观察表
对于某些几何题,按常规方法解答,往往会陷入迷途。解题时,如果能抓住问题的实质,从整体出发、全面思考,往往就能达到直观分析、迅速解题的目的。
This study addresses bilevel linear multi-objective problem issues i.e the special case of bilevel linear programming problems where each decision maker has sev
[题目]一头大象比一头野牛重4.2吨,这头大象的体重是这头野牛的3倍。这头大象和这头野牛的体重分别是多少吨?我是这样解的。解:设这头野牛的体重是x吨,则这头大象的体重是3x
腾讯在北京召开QQ2005正式版新闻媒体发布会那一刻，不经意间，可爱的小企鹅已经7岁了。QQ2005正式版都有哪些功能让我们为之振奋呢？让我们一同感受（如图1）。