废品想念张伯伦

2011年12月21日,当新闻里传来约翰·张伯伦（John Chamberlain）的死讯时,古根海姆博物馆（Solomon R.Guggenheim Museum）的工作人员正在为他布展——原定于2012年2月24日至5月13日举办的张伯伦大型回顾展“选择（Choices）”,     

设计成瘾

如果设计也可以被称为一种毒品,那么他绝对是一个中毒极深的瘾君子。他沉湎于平面设计、产品设计、空间设计、包装设计、纯艺术、音乐等多个设计及相关领域。对于他这种自然而然时多类型、跨媒体、广泛涉猎”的设计态度,我们美其名曰“设计成瘾”。     

可口可乐 “它是我的”

The Mill New York通过一个过去和现在都家喻户晓的人物制作了Super Bowl的广告,并让它来到了天上。     

包装设计中公益广告理念的体现

公益广告是全社会的公益事业,让包装设计和公益广告理念互相融洽到一起,不仅是为了展示包装、促销商品,也是为了让公益广告更好的传递到人们的生活中。文章主要是通过文字、造型、色彩三个方面,把公益广告理念在包装设计中充分体现出来。     

绿色包装设计中的“少即是多”——以月饼包装设计为例

现代主义设计理论——少即是多,被无数设计师奉为经典。简约几乎成为现代设计响亮的代名词,随着人类物质生活水平的不断提升,环境污染和能源缺乏开始成为全世界共同关注的话题。文章以月饼包装为例,结合简约设计和绿色环保两个理念,研究月饼包装文化,发现其中存在的问题,提出绿色设计在现代包装设计中的运用,试图解决过度包装这一问题,进而思考绿色简约的设计思潮对产品包装设计的启示。     

李开复：99％的团购网站都要死

谷歌中国区前总裁,创新工场CEO李开复近日爆出惊人言论称：99％的团购网站都要死。他表示：“团购刚出来的时候,我曾经发过一条微博：一年之内,99％的团购网站都要死。”而现在他依旧坚持自己的观点,只不过团购网站的生命会延续得更长一点,原因在于投资人比他想象的傻一点。     

将生态设计理念注入吉林省土特产品包装设计

土特产品包装所具有的品格,与其他产品相比,无论在文化品位上,还是包装形式上都应具有明显的不同。土特产品的重要特征就是天然、绿色。其包装的设计,更以该遵循这样的原则。包装材料上和包装形式上,都应该寻求发展。生态包装,又叫绿色包装,目的是为人类创造一个洁净、良性循环的生态环境,最大限度的保存自然资源,形成最小数量的废弃物和最低限度的环境污染。     

探析计算机平面设计中色彩语言的应用

在网络信息时代背景下,计算机技术逐渐在各行各业均取得了突出应用成效,其中较具代表性的即为平面设计应用,为人们日常生活提供了更多丰富色彩,并且在此基础上人们对于色彩认知程度也在不断加深,特别是在计算机平面设计中色彩语言的地位可以说是愈发重要,需要对其展开更加深入的研究探讨。笔者主要对色彩语言在计算机平面设计中的应用进行分析。     

基于云技术的农村社区废品管理系统设计与开发

乡村振兴战略要求加强农村生态环境建设.基于移动终端的农村社区废品管理系统是为适应农村社区物业管理人员回收农户废品的实际需要,开发了点对点废品回收管理系统.通过采取TCP/IP协议、搭建云服务器、创建云端图片处理服务器、建立非关系型云端数据库,实现了对用户操作处理、数据存储和传输的即时性.良好的交互页面与全面的功能设计,...     

Model development and comparison to predict softwood and hardwood per cent cover using high and medium spatial resolution imagery

The recent availability of high spatial resolution multispectral scanners provides an opportunity to adapt existing methods and test models to derive spatially explicit forest type and per cent cover information at the Landsat pixel level. A regression modelling methodology was applied for scaling‐up high resolution (IKONOS) to medium spatial resolution satellite imagery (Landsat) to predict softwood and hardwood forest type and density (per cent cover) in a northern Maine study area. Regression relationships (63 different models) were developed and compared. The model variables included vegetation indices and several date (season) combinations of Landsat Enhanced Thematic Mapper Plus (ETM+) imagery (August, September, October and May).

A model incorporating all variables from four dates of Landsat ETM+ imagery produced the highest coefficient of variation in predicting both softwood (0.655) and hardwood cover (0.66). The addition of vegetation indices with the six ETM+ reflected bands did not significantly improve or detract from the regression relationships for any of the multi‐date or single date models examined. A two‐date combination of October and May variables provided an acceptable (and arguably more cost‐effective) model as the adjusted R ² value was 0.645 for softwood and 0.649 for hardwood. A significant result was that all single‐date models produced inferior results with a sharp drop in adjusted R ², compared with the multi‐date seasonal models. This research has demonstrated that the regression models including multi‐date variables produce good results and can provide spatially explicit forest type and stand structure data that has been difficult or infeasible to obtain from medium spatial resolution imagery using traditional classification methods.     

基于Protel 99SE的PLD设计

本文主要介绍Protel 99SE中的PLD可编程逻辑设计的方法和过程以及在实际工作中的应用。     

Constant time per edge is optimal on rooted tree networks

 We analyze the relationship between the expected packet delay in rooted tree networks and the distribution of time needed for a packet to cross an edge using convexity-based stochastic comparison methods. For this class of networks, we extend a previously known result that the expected delay when the crossing time is exponentially distributed yields an upper bound for the expected delay when the crossing time is constant [20] using a different approach. An important aspect of our result is that unlike most other previous work, we do not assume Poisson arrivals. Our result also extends to a variety of service distributions, and it can be used to bound the expected value of all convex, increasing functions of the packet delays. An interesting corollary of our work is that in rooted tree networks, if the expectation of the crossing time is fixed, the distribution of the crossing time that minimizes both the expected delay and the expected maximum delay is constant. Our result also holds in multi-casting rooted tree networks, where a single message can have several possible destinations. Besides offering a useful analysis on this restricted class of networks, we also provide a small improvement to the bounding technique. Surprisingly, this improvement is also applicable to previously developed comparison methods, leading to an improvement in the upper bounds for greedy routing on butterfly and hypercube networks given by Stamoulis and Tsitsiklis [20]. Received: September 1996 / accepted: April 1997     

Structural optimization with several discrete design variables per part by outer approximation

The article proposes an optimal design approach to minimize the mass of load carrying structures with discrete design variables. The design variables are chosen from catalogues, and several variables are assigned to each part of the structure. This allows for more design freedom than only choosing parts from a catalogue. The problems are modelled as mixed 0–1 nonlinear problems with nonconvex continuous relaxations. An algorithm based on outer approximation is proposed to find optimized designs. The capabilities of the approach are demonstrated by optimal design of a space frame (jacket) structure for offshore wind turbines, with requirements on natural frequencies, strength, and fatigue lifetime.     

Optimal design of structures with multiple design variables per group and multiple loading conditions on the personal computer

A finite element based programming system for minimum weight design of a truss-type structure subjected to displacement, stress, and lower and upper bounds on design variables is presented. The programming system consists of a number of independent processors, each performing a specific task. These processors, however, are interfaced through a well-organized data base, thus making the tasks of modifying, updating, or expanding the programming system much easier in a friendly environment provided by many inexpensive personal computers. The proposed software can be viewed as an important step in achieving a “dummy” finite element for optimization. The programming system has been implemented on both large and small computers (such as VAX, CYBER, IBM-PC, and APPLE) although the focus is on the latter. Examples are presented to demonstrate the capabilities of the code. The present programming system can be used stand-alone or as part of the multilevel decomposition procedure to obtain optimum design for very large scale structural systems. Furthermore, other related research areas such as developing optimization algorithms (or in the larger level: a structural synthesis program) for future trends in using parallel computers may also benefit from this study.