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.

Design of Aided Decision-Making Program for Prioritizing Construction Projects in Urban Road Network Planning

The importance and complexity of prioritizing construction projects (PCP) in urban road network planning lead to the necessity to develop an aided decision making program (ADMP). Cost benefit ratio model and stage rolled method are chosen as the theoretical foundations of the program, and then benefit model is improved to accord with the actuality of urban traffic in China. Consequently, program flows, module functions and data structures are designed, and particularly an original data structure of road ...

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。

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.

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

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.

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.

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.

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.

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.

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。

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。

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。

一种分布式会议管理系统的设计与实现

基于现代会议管理的需求,设计和实现一种C/S和B/S混合部署的会议管理系统。包括会议管理服务中心和若干个会议现场,会议管理服务中心包括数据服务器、应用服务器、Web服务器、通信网关和出口路由器;会议现场包括若干个便携式电脑、RFID(Radio Frequency Identification)读卡器、二维码阅读器、信息显示发布设备、现场WLAN设备及用户终端。使用RIA(Rich Internet Application)技术优化了B/S界面,应用RFID对会议过程中的细节进行监控,借助SAAS(Software as a Service)模式实现会议管理按需配置和快速部署。该系统显著提高了会议管理效率。

党的二十大背景下设计融合残疾人辅助性就业的创新路径研究

党的二十大报告指出:“促进残疾人事业全面发展”。为贯彻党的二十大精神,努力提升残疾人就业质量,促进残疾人事业发展,通过对湖南省托养机构辅助性就业的基础调研,探索残疾人辅助性就业的新模式。首先分析了当前残疾人辅助性就业的困境,其次详细剖析了“辅助性就业模式下残疾人社会融入路径”“工艺美术促进残疾人辅助性就业创新路径”,根据其内在对应关系,探究设计融合残疾人辅助性就业创新路径研究的耦合机制,最后从“开展多样活动”“升级生产工具”“品牌化战略”“融合区域特色”4个角度对破解当前辅助性就业困局提出针对性意见。

螺旋半圆管夹套式余热排出装置传热分析及设计程序开发

提出一种适用于小型反应堆的螺旋半圆管夹套式非能动余热排出装置,利用螺旋半圆管夹套具有的传热效率高、结构紧凑等优点,与反应堆主容器形成一体化的紧凑设计。基于此,对螺旋半圆管夹套的传热过程进行了分析,提出传热计算模型并基于此开发了热工设计程序,通过与公开文献中试验数据的对比分析,验证了程序的正确性,可以用于半圆管夹套式余热排出装置的工程设计。

传统文化类小程序界面设计要素对学习兴趣的影响研究

目的本研究旨在探讨传统文化类微信小程序界面设计要素对用户学习兴趣的影响。通过分析界面设计因素,旨在揭示界面设计要素如何促进用户对传统文化学习的兴趣。方法采用作者独立设计的小程序界面方案作为研究样本,结合主观调查问卷和眼动追踪实验,研究不同界面设计要素对用户在使用过程中学习兴趣的影响模式。结果眼动追踪数据与问卷调查结果均显示,在传统文化类微信小程序的界面设计中,适宜的字体样式与色彩搭配、引人入胜的交互设计,以及合理的功能布局对增强用户学习兴趣具有显著作用。结论本研究的发现为传统文化类微信小程序的界面设计提供了提升用户体验和学习兴趣的理论依据、实践指导。这些结论对设计者在开发类似应用程序时,如何通过界面设计激发和维持用户学习兴趣具有重要的参考价值。

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。