On the Analysis Method of the Triple Test Cross Design

The analysis method of the triple test cross design has been discussed carefully from the two factor experiment design and the genetic models of additive dominant effect and of epistasis effect.Two points different from the previous reports have been concluded: (1)both the degrees of freedom of the orthogonal terms C2 and C3 are m, (2)the denominator in the F test to C2 and C3 is the error mean of square between plots.

Overall Selection Design Based on the Mega Highway Bridge Project

In the continuous development of the modern highway and bridge engineering industry,the reasonable selection of mega highway bridges and their design is crucial.Based on this,this paper takes the actual bridge project as an example,and analyses the overall selection design of such highway bridges,including the basic overview of the project,the basic selection principle of mega highway bridge project structure and its design strategy,etc.,to provide scientific reference for its selection design.

Novel Optimized Cross-Layer Design with Maximum Weighted Capacity Based Resource Allocation for AMC/HARQ Wireless Networks

To provide quality-of service (QoS) guarantees for heterogeneous applications, most recent wireless communications technologies and standards combine the error-correcting capability of hybrid automatic repeat request (HARQ) schemes at the data link layer (DLL) with the adaptation ability of the adaptive modulation and coding (AMC) modes at the physical layer (PHY) layer. This paper aims to investigate the aggregated system capacity as well as the breakdown of this capacity for different ACM modes in each HARQ scheme. This investigation was done by using maximum weighted capacity (MWC) resource allocation at the PHY layer in conjunction with a novel packet error rate (PER)-based scheduling at the medium access control (MAC) layer. As a result, the dominant AMC mode corresponding to channel SNR was available.

Cross-Layer Design Based Optimized Link State Routing Protocol for Wireless Mesh Networks

A proactive routing protocol CL-OLSR （cross-layer based optimized link state routing） by using a brand-new routing metric CLM （cross-layer metric） is proposed. CL-OLSR takes into account four link quality impact factors in route calculation through the cross-layer operation mechanism： the node available bandwidth, the node load, the link delivery rate, and the link interference, and thus the effect of route selection is optimized greatly. The simulation results show that the proposed CL-OLSR protocol can not only improve the network throughput to a large extent, but also reduce the end-to-end delay, while achieving load balance route results.

Cross Layered MAC Design for RF Energy Harvesting Sensor Network

The main research objective in wireless sensor networks (WSN) domain is to develop algorithms and protocols to ensure minimal energy consumption with maximum network lifetime. In this paper, we propose a novel design for energy harvesting sensor node and cross-layered MAC protocol using three adjacent layers (Physical, MAC and Network) to economize energy for WSN. The basic idea behind our protocol is to re-energize the neighboring nodes using the radio frequency (RF) energy transmitted by the active nodes. This can be achieved by designing new energy harvesting sensor node and redesigning the MAC protocol. The results show that the proposed cross layer CL_EHSN improves the life time of the WSN by 40%.

Performance of Cross-Layer Design with Power Allocation in Space-Time Coded MIMO Systems

A cross-layer design(CLD)scheme with combination of power allocation,adaptive modulation(AM)and automatic repeat request(ARQ)is presented for space-time coded MIMO system under imperfect feedback,and the corresponding system performance is investigated in a Rayleigh fading channel.Based on imperfect feedback information,a suboptimal power allocation(PA)scheme is derived to maximize the average spectral efficiency(SE)of the system.The scheme is based on a so-called compressed SNR criterion,and has a closed-form expression for positive power allocation,thus being computationally efficient.Moreover,it can improve SE of the presented CLD.Besides,due to better approximation,it obtains the performance close to the existing optimal approach which requires numerical search.Simulation results show that the proposed CLD with PA can achieve higher SE than the conventional CLD with equal power allocation scheme,and has almost the same performance as CLD with optimal PA.However,it has lower calculation complexity.

On Cross-Layer Design of AMC Based on Rate Compatible Punctured Turbo Codes

This paper extends the work on cross-layer design which combines adaptive modulation and coding at the physical layer and hybrid automatic repeat request protocol at the data link layer. By contrast with previous works on this topic, the present development and the performance analysis as well, is based on rate compatible punctured turbo codes. Rate compatibility provides incremental redundancy in transmission of parity bits for error correction at the data link layer. Turbo coding and iterative decoding gives lower packet error rate values in low signal-to-noise ratio regions of the adaptive modulation and coding (AMC) schemes. Thus, the applied cross-layer design results in AMC schemes can achieve better spectral efficiency than convolutional one while it retains the QoS requirements at the application layer. Numerical results in terms of spectral efficiency for both turbo and convolutional rate compatible punctured codes are presented. For a more comprehensive presentation, the performance of rate compatible LDPC is contrasted with turbo case as well as the performance complexity is discussed for each of the above codes.

Cross Layer Design for Cooperative Transmission in Wireless Sensor Networks

Several protocols and schemes have been proposed to reduce energy consumption in Wireless Sensor Net-works (WSNs). In this paper we employ farcoopt, a cross layer design approach with the concept of coop-eration among the nodes with best farthest neighbor scheme to increase the Quality of Service (QoS), reduce energy consumption, increases performance and end-to-end throughput. We present cooperative transmission to connect previously disconnect parts of a network thus overcoming the separation problem of multi-hop network. We show that this approach improves connectivity over 50% compared to multi-hop approaches and reduces the number of nodes necessary to provide full coverage of an area up to 35%. Simulation results show that on increase of data rates i.e. packet the network life time increases in farcoopt as compared to tra-ditional multi hop approach. The result of this analysis is presented in this work.

Cross-layer design of combining AMC with HARQ in cooperative relay system with perfect and imperfect CSI

A cross-layer design which combines adaptive modulation and coding (AMC) at the physical layer with a hybrid automatic repeat request (HARQ) protocol at the data link layer (LL) is presented, in cooperative relay system over Nakagami-m fading channels with perfect and imperfect channel state information (CSI). In order to maximize spectral efficiency (SE) under delay and packet error rate (PER) performance constraints, a state transition model and an optimization framework with perfect CSI are presented. Then the framework is extended to cooperative relay system with imperfect CSI. The numerical results show that the scheme can achieve maximum SE while satisfying transmitting delay requirements. Compared with the imperfect CSI, the average PER with perfect CSI is much lower and the spectral efficiency is much higher.

DESIGN OF LIGHTWEIGHT PUF CIRCUIT BASED ON SELECTABLE CROSS-COUPLED INVERTERS

By analyzing the principle of process variations, a lightweight Physical Unclonable Function （PUF） circuit based on selectable cross-coupled inverters is proposed in this paper. Firstly, selectable cross-coupled inverters are chosen for two delay paths. Simultaneously, the circuit takes challenge signal to control each delay path. The PUF cell circuit is implemented in Semiconductor Manufacturing International Corporation （SMIC） 65 nm CMOS technology and the layout area is 2.94μm × 1.68μm. Then the 64-bit PUF circuit is achieved with the cascade connection of cell circuits. The simulation results show that the randomness is 49.4% and the reliability is 96.5%. Compared to the other works, this PUF circuit improves the encrypt performance and greatly reduces the area.

基于WebView的Responsive Web Design技术跨平台应用设计与实现

为解决同一移动应用App在不同移动终端因为显示性能的不同而带给用户过大的体验差异,在不影响应用开发效率的前提下,本文利用基于WebView组件的封装技术,结合自适应网页设计技术,既可以提高应用开发及维护升级的周期和效率,节约开发成本,同时又能自适应不同终端设备的参数差异,给用户提供良好的视觉体验。

CONTOUR DESIGN AND PRACTICE FOR A LOW RADAR CROSS SECTION VEHICLE

On the basis of the canard configuration a contour stealth design including chiefly the wing, the fuselage and their connection type is projected. The prime project of a blended wing body vehicle with canard is provided and through the change of the fuselage head form and the different fin disposals, the radar cross section (RCS) is optimized. The average value of RCS and the value of RCS in the ± 45 ° front sector for different designs are illustrated. The model measurement proves that the project having a sharp head fuselage and 30 ° angle double fin has the minimum value of RCS. The wind tunnel test to the model with RCS optimized proved that the vehicle project has excellent aerodynamic characteristics such as high lift curve slope, up to 26° stalling angle, high lift / drag ratio equal to 8, and also has low RCS value in the front sector and in the lateral sector.

“算法分析与设计”课程思政建设探究与实践

针对如何从专业角度构建课程思政体系的问题,文章结合“算法分析与设计”课程,探究并实践了研究生专业课程思政建设的内容和路径。通过强化顶层设计,科学制定课程思政建设目标;增进交叉融合,深入挖掘思政元素,优化课程思政内容的供给,形成了“算法分析与设计”课程的思政建设路径及教学模式。最后,提出了未来的研究方向。

跨模态生成技术下面向文化产品的概念设计方法研究

文化产品是传承传统文化的重要方式,但目前市场同质化严重,设计研究效率低,人力成本高。跨模态生成技术可实现文化产品数字原型快速生成迭代,是数字化创新的有效途径。文章提出了一种将跨模态生成技术与当前文化产品概念设计过程相结合的方法。根据文化产品特点和跨模态生成技术特点,结合文化意象层次知识,将设计过程中需要人为处理的大量跨模态设计任务,通过跨模态技术处理传递设计信息,快速生成创新概念方案,并对此设计方法流程进行研究。以“基于海晏河清文化的加湿器”为例,进行有效设计实践,获得相关文化产品初步概念设计方案。利用该概念设计方法可以促进文化产品概念设计阶段快速迭代,为文化产品的创新和发展提供有力支持。

学科交叉背景下2023年产品设计研究进展及反思

为进一步推动产品设计研究向着更深、更广的跨领域融合方向发展,通过文献研究法、Cite Space关键词共现分析及可视化呈现,系统梳理和深度剖析2023年度涵盖国家政策导向、教育体系改革、学术期刊论文发表概况、学位论文热点主题、国家级基金获批项目、高校与学术机构的论坛会议等多维度资料,揭示产品设计研究领域在学科交叉背景下的发展现状和特点,总结当前产品设计研究在跨学科交融过程中所面临的问题,展望了产品设计研究面向未来社会发展与产业需求、立足本土文化、跨领域创新理论与实践成果的高度融合等核心趋势,对未来研究方向做出了前瞻性的预测与建议。

基于BIM技术的应用型高校土建类跨专业联合毕业设计探索与实践

通过分析土木类专业毕业设计现状,在数字化背景下,结合行业需求,将BIM技术应用于毕业设计实践教学环节,构建联合毕业设计教学实施体系,实现跨专业协同设计,各专业的学生都能充分演绎本专业工程师的角色,学生大工程意识、沟通能力、创新能力、团队协作能力得到了很好的锻炼,能适应信息化时代下工程建设行业对人才的需求。

复杂受荷下盾构隧道原型结构试验平台的研发与实证

盾构隧道结构在全寿命周期中往往将面临诸多复杂荷载状态,如注浆、偏载、偏转等非对称偏不利工况。为验证结构在这些复杂荷载状态下的适用性,探究结构力学性能,开展足尺原型结构试验研究往往是最为直接而有效的手段。既有原型试验主要关注隧道结构在简单对称荷载条件下的力学性能,鲜有关注复杂非对称荷载状态。为拓展原型试验的适用范围,提出了适用于不同断面盾构隧道结构的原型试验平台和用于模拟复杂荷载状态的试验荷载设计方法。该方法适用于任意加载点布置和液压站分组的试验系统,可对注浆、偏载、偏转等复杂荷载状态下结构响应进行精确模拟。通过类矩形盾构隧道、双圆隧道和圆形隧道的偏载原型结构试验研究,验证了试验平台和试验荷载设计方法的适用性。进一步针对试验关键参数的分析表明,控制目标权重系数的调整能有效满足不同的试验模拟要求;基于试验荷载设计方法优化的迭代算法能有效考虑计算模型或边界支承条件的非线性;环箍钢绞线和千斤顶的组合加载模式能将拟合误差水平降低至千斤顶加载模式的1/5,但需要删去部分加载点使试验荷载合理且适用;对于越复杂的结构和荷载,精确模拟结构状态需要的试验系统独立荷载组数越高,对试验平台的要求也越高。

跨界融合下现代粤绣题材创新设计与表现

在多元文化发展的今天,粤绣艺术既要传承又要创新发展,体现与时俱进的现代粤绣。通过剖析粤绣文化内涵与艺术特征,探究粤绣发展的现状与策略,揭示传统粤绣在跨界融合下的新思考、新范式,形成粤绣创新设计下的时代风貌,实现粤绣多维度的创新发展,为粤绣培育与传承提供理论参考及设计借鉴。

产教融合,知行并进——武汉理工大学艺术与设计学院的设计人才培养之路

近代以来西学东渐,中国设计教育在曲折中起步并经历了深刻的转型,从传统的图案学与工艺美术范畴,逐步迈向高度交叉融合的学科领域,不断挑战并跨越专业界限,深化了人类对设计本质与应用的认知。本文聚焦于武汉理工大学艺术与设计学院在中国现代设计教育发展历程中的贡献与探索,通过文献分析、案例研究及实证分析,梳理学院在海洋与制造强国战略、长江经济带发展战略等方面的贡献,以及“产教融合、知行并进”的设计人才培养路径探索,阐述其设计教育创新实践。

新媒体背景下视觉传达设计的跨媒介表现探析

在新媒体背景下,跨媒介表现是评估视觉传达设计质量的关键指标。传统媒介与基于数字化或互联网的新媒介在承载视觉传达设计要素、展现表现力方面具有不同的特点。相较于传统媒介,新媒介能够承载更多视觉设计元素,具有更多的表现形式及更强的表现力。其中,基于跨媒介信息传播的视觉传达设计本质上是一种多媒介融合设计,其跨媒介表现对设计表达具有至关重要的意义。