Decomposition of Mathematical Programming Models for Aircraft Wing Design Facilitating the Use of Dynamic Programming Approach

Aircraft designers strive to achieve optimal weight-reliability tradeoffs while designing an aircraft. Since aircraft wing skins account for more than fifty percent of their structural weight, aircraft wings must be designed with utmost care and attention in terms of material types and thickness configurations. In particular, the selection of thickness at each location of the aircraft wing skin is the most consequential task for aircraft designers. To accomplish this, we present discrete mathematical programming models to obtain optimal thicknesses either to minimize weight or to maximize reliability. We present theoretical results for the decomposition of these discrete mathematical programming models to reduce computer memory requirements and facilitate the use of dynamic programming for design purposes. In particular, a decomposed version of the weight minimization problem is solved for an aircraft wing with thirty locations (or panels) and fourteen thickness choices for each location to yield an optimal minimum weight design.

China's ETS pilots: Program design, industry risk, and long-term investment

The emissions trading scheme(ETS)is considered an effective policy tool for achieving emission reductions.At present,China's ETS pilots have completed several compliance periods and provided rich experience for a national ETS.Taking advantage of the variations in the regional ETS pilots across regions and sectors and over time,this study used a difference-in-difference-in-differences(DDD)model to examine the effects of ETS pilots and differential program design on industry risk and the impacts of risk on future investment horizon.First,we found that the ETS pilots significa ntly increase profit variability(total risk)in China's industry;that is,ETS in duces greater uncertainty in the covered sectors.In terms of industry heterogeneity,non-eleclricily sectors(specifically ferrous metal)engage in higher levels of risk taking.Second,the influence of such program features as the allowance allocation(total amounts and approaches),China Certification Emission Reduction(CCER)trading volumes,and penalties are heterogeneous.Finally,during the period around the treatment,industry risk can significantly encourage longer rather than shorter investment.In particular,the punishment mechanism and benchmarking allocation play a positive role in regulating the risk-investment relationship.

An Improved Graphic Representation for Structured Program Design

In this paper,an improved graphic representation for Structured Program Design——N-S-Z (Nassi-Shneiderman-Zhou Diagram)is proposed.It not only preserves the advantages of the conventional graphic and non-graphic representations,but also adds some new features which will enhance the representa- tive power of the original diagram.

Design of the Hydrological Emergency Supervising Program Based on Hydrometry

According to practical hydrological emergency supervising program design,we have discovered and held a design principle with a method to get information promptly and accurately,monitor safely and conveniently,and collect information systematically,expounded the emergency hydrological monitoring program towards hydrometry,which shall be taken full analysis on the special geological environment around the site,aimed at damming body monitoring,and also the construction of hydrological emergency supervising networks in the area,the live video acquisition towards special point of the dammed barrier,then carried out monitoring measures which were suitable to contemporary economy and technology to get complete hydrological information we require. Finally,we put forward a concrete designing method for precluding disaster and reducing the loss of disaster based on the information above.

基于TouchDesigner视觉编程技术的粤剧数字化设计创新

目的探究TouchDesigner视觉化编程技术于粤剧当代发展中的数字化设计创新路径。方法分析粤剧的数字化发展现状,探讨TouchDesigner视觉化编程技术与粤剧的数字化转换关系,从而研究粤剧的可数字化元素及TouchDesigner技术的数据转换方法。分析当下数字技术介入粤剧的研究现状,并总结特点与不足,从中发现TouchDesigner编程技术之于粤剧的数字化创新突破口。最后通过TouchDesigner介入粤剧的数字化设计实践与案例剖析,探索多元交互与沉浸式表现技术中的粤剧多重感官体验形式,探究粤剧数字化设计的多维表达方式。结论为粤剧的当代发展提供一种融媒体、跨感官的交互式数字化设计创新方法,实现粤剧数字化创新表达,同时,也为传统文化的数字化设计注入中国式血液,进而引发对未来智能场景下粤剧数字化设计创新的新思考。

A knowledge-to-action approach to food fortification: Guiding principles for the design of fortification programs as a means of effectively addressing micronutrient malnutrition

The gap that exists between research and the dissemination and implementation of research findings has been well established. Food fortification, one of the most cost-effective means of addressing micronutrient malnutrition, is no exception. With decades of implementation experience, there is need to strengthen mechanisms that effectively broadcast proven strategies to promote the successful implementation of fortification programs in changing, challenging, and dynamic environments. This requires clear channels of communication, well-defined in-country leadership, and a streamlined and focused approach that can be adapted to country-specific contexts. Based on experience designing and implementing fortification programs throughout Africa and a broad understanding of past successes and failures, a model is proposed that articulates often over-looked program elements critical to design and implementation.

A Trace-state Based Approach to Specification and Design of Parallel Programs

In this paper they deal with the issue of specification and design of parallel communicatingprocesses. A trace-state based model is introduced to describe the behaviour of concurrent programs. They presenta formal system based on that model to achieve hierarchical and modular development and verification methods. Anumber of refinement rules are used to decompose the specification into smaller ones and calculate program fromthe

Automatic Generation of UML Class Diagrams for Object-oriented Design and Programing Course

UML Class diagram generation from textual requirements is an important task in object-oriented design and programing course.This study proposes a method for automatically generating class diagrams from Chinese textual requirements on the basis of Natural Language Processing(NLP)and mapping rules for sentence pattern matching.First,classes are identified through entity recognition rules and candidate class pruning rules using NLP from requirements.Second,class attributes and relationships between classes are extracted using mapping rules for sentence pattern matching on the basis of NLP.Third,we developed an assistant tool integrated into a precision micro classroom system for automatic generation of class diagram,to effectively assist the teaching of object-oriented design and programing course.Results are evaluated with precision,accuracy and recall from eight requirements of object-oriented design and programing course using truth values created by teachers.Our research should benefit beginners of object-oriented design and programing course,who may be students or software developers.It helps them to create correct domain models represented in the UML class diagram.

Evolutionary Design of Fault-Tolerant Digital Circuit Based on Cartesian Genetic Programming

In many areas, reliability of the digital circuits has become the key factor to restrict circuit development. Fault-tolerant design is the commonly used method to improve the reliability of digital circuits. The current fault-tolerant design methods are based on triple modular redundancy( TMR) or multiple modular redundancy( MMR). These redundancy designs rely on the experience of the designers,and the designed circuits have poor adaptabilities to a complex environment. However, evolutionary design of digital circuits does not rely on prior knowledge. During the evolution, some novel and optimal circuit topologies can be found, and the evolved circuits can feature strong adaptive capacities. Based on Cartesian genetic programming( CGP), a novel method for designing fault-tolerant digital circuits by evolution is proposed,key steps of the evolution are introduced,influences of function sets on evolution are investigated,and as a preliminary result,an evolved full adder with high fault-tolerance is shown.

高职专科层次预制菜人才培养方案设计——兼论餐饮院校烹饪类专业的衔接

文章从预制菜生产经营的全过程中找到预制菜人才培养的切入点、结合点和落脚点,对预制菜人才培养的专业进行设计,并对高职烹饪类专业如何衔接培养预制菜人才的关键点进行设计,希冀为餐饮院校培养预制菜人才制定培养方案提供参考。

风景园林策划——一种探究设计依据的途径

【目的】在当前风景园林项目的建设流程中,设计任务书的编制更多地依赖从业者的经验而非可靠的证据,设计依据的科学性、合理性难以把控。风景园林策划(landscape architectural programming)是研究设计依据形成过程的理论和方法,但当前风景园林策划相关研究尚处于起步阶段。【方法/过程】首先,通过追溯和比较分析策划在城市设计、建筑设计、风景园林领域的发展过程,对比设计策划在实践活动中所处的时序位置及内涵、目的等方面;其次,归纳开展科学研究的流程与层级,并应用至风景园林策划中,提出风景园林策划研究框架。【结果/结论】风景园林策划具有广义与狭义的不同内涵与定义,本质属性是导向设计科学决策的循证科学;风景园林策划的研究框架包含认识论与理论视角、策划方法论、策划程序、策划方法、策划技术5个部分。其中,策划方法论是开展策划所需的一套完整的行动计划,作为多种方法的系统化集合,统领策划程序、策划方法、策划技术3个方面,是当前风景园林策划领域的研究重点。

基于共同成长理念的民间救助建筑策划与设计

文章通过对国内民间救助建筑的历史回顾与现状分析,结合国外救助建筑发展经验和“发展性分层级救助”的救助理念,提出以救助对象共同成长为中心的建筑策划模式与开放性设计策略,并探索民间救助建筑实现可持续发展的具体实施路径。

Detecting Design Patterns in Object-Oriented Program Source Code by Using Metrics and Machine Learning

Detecting well-known design patterns in object-oriented program source code can help maintainers understand the design of a program. Through the detection, the understandability, maintainability, and reusability of object-oriented programs can be improved. There are automated detection techniques;however, many existing techniques are based on static analysis and use strict conditions composed on class structure data. Hence, it is difficult for them to detect and distinguish design patterns in which the class structures are similar. Moreover, it is difficult for them to deal with diversity in design pattern applications. To solve these problems in existing techniques, we propose a design pattern detection technique using source code metrics and machine learning. Our technique judges candidates for the roles that compose design patterns by using machine learning and measurements of several metrics, and it detects design patterns by analyzing the relations between candidates. It suppresses false negatives and distinguishes patterns in which the class structures are similar. As a result of experimental evaluations with a set of programs, we confirmed that our technique is more accurate than two conventional techniques.

基于面向对象编程的Java语言程序设计方法分析

阐述面向对象编程方法和Java语言的特点,通过案例分析和实践验证Java语言在程序设计中的灵活性和扩展性,讨论Java语言的封装、继承和多态特性,在设计和实现Java程序中的应用。

高校师资队伍标准化培养方案的设计与实施

在高等教育领域,高校师资队伍的素质和能力对教学质量和教育改革起着至关重要的作用。为了提高高校师资队伍的整体水平,许多高校开始关注和实施师资队伍标准化培养方案,旨在通过系统性的培训和发展,提升教师的教学能力、学科素养和专业水平,以适应教育改革和社会需求的变化。如何设计和实施有效的师资培养方案是一个值得深入研究的问题。基于此,本文从培养目标、培养方案、评估反馈等多个角度详细阐述高校师资队伍标准化培养方案的设计与实施。

普通高校测绘工程专业程序设计类课程的教学改革探讨

随着传感器技术的飞速发展,以三维激光扫描为代表的新型批量数据采集装备的出现极大地提高了空间定位数据采集的效率。正确、高效地从采集的各类数据中提取感兴趣的信息成为新时代背景下测绘人员的必备技能。作为培养高级专门人才的摇篮,紧跟行业需求,在课程设置、教学内容与教学方法方面不断进行优化和调整是高等院校教学人员的使命。以“数据结构与测绘程序设计”课程为例,探讨了新时代背景下课程教学改革的具体措施,重点讨论了教学内容的调整与教学方法的变革两个方面,在此基础上,对多媒体课件研制过程中面临的问题及解决措施进行了分析;最后立足于课程教学改革的现有成果,对课程建设与改革的下一步工作进行了展望。

Nonlinear Programming Based Preamble Design for OFDM Systems

A new preamble structure and design method for orthogonal frequency division multiplexing（OFDM）systems is described,which results a two-symbol long training preamble.The preamble contains four parts,the first part is the same as the third,and the four parts are calculated by using nonlinear programming（NLP）model such that the moving correlation of the preamble results a steep rectangular-like pulse of certain width,whose step-down indicates the timing offset.Simulation results in AWGN channel are given to evaluate the perf o rmance of the proposed preamble design.

A Dynamic Programming Approach to the Design of Composite Aircraft Wings

A light and reliable aircraft has been the major goal of aircraft designers. It is imperative to design the aircraft wing skins as efficiently as possible since the wing skins comprise more than fifty percent of the structural weight of the aircraft wing. The aircraft wing skin consists of many different types of material and thickness configurations at various locations. Selecting a thickness for each location is perhaps the most significant design task. In this paper, we formulate discrete mathematical programming models to determine the optimal thicknesses for three different criteria: maximize reliability, minimize weight, and achieve a trade-off between maximizing reliability and minimizing weight. These three model formulations are generalized discrete resource-allocation problems, which lend themselves well to the dynamic programming approach. Consequently, we use the dynamic programming method to solve these model formulations. To illustrate our approach, an example is solved in which dynamic programming yields a minimum weight design as well as a trade-off curve for weight versus reliability for an aircraft wing with thirty locations (or panels) and fourteen thickness choices for each location.