摘要：This work investigates the performance of various forward error correction codes, by which the MIMO-OFDM system is deployed. To ensure fair investigation, the performance of four modulations, namely, binary phase shift keying(BPSK), quadrature phase shift keying(QPSK), quadrature amplitude modulation(QAM)-16 and QAM-64 with four error correction codes(convolutional code(CC), Reed-Solomon code(RSC)+CC, low density parity check(LDPC)+CC, Turbo+CC) is studied under three channel models(additive white Guassian noise(AWGN), Rayleigh, Rician) and three different antenna configurations(2×2, 2×4, 4×4). The bit error rate(BER) and the peak signal to noise ratio(PSNR) are taken as the measures of performance. The binary data and the color image data are transmitted and the graphs are plotted for various modulations with different channels and error correction codes. Analysis on the performance measures confirm that the Turbo + CC code in 4×4 configurations exhibits better performance.

摘要：金勇 ,张世刚 ,顾列刚 ,杜国兵 .forward测井解释平台中使用的先进技术 .测井技术 ,2 0 0 0 ,2 4(1) :6 4～ 70forward是我国第一套完全采用面向对象思想设计和开发的测井解释平台。 forward的开发过程中大量应用了程序自动生成和挂接、分层精细解释、数据一致性、面向对象测井绘图、所见即所得、单一源程序跨平台等先进技术 ,平台开放性好、操作简单。

摘要：forward测井解释平台可提供较齐全的常规测井资料解释处理方法和特殊项目处理软件模块 ;利用该平台工具还可以方便快捷地生成或移植应用程序。该系统在江苏油田投产 3年来 ,根据生产的需要 ,由用户自己移植并挂接了适合江苏油田特点的处理程序和应用软件模块。其处理程序有产能评价分析程序、泥质砂岩分析程序、复杂岩性分析程序和碳氧比分析程序等 ;其应用软件模块有连续测斜仪数据解编程序、斜井校深程序、井眼容积程序、同位素吸水剖面程序、低阻层应用程序等。为此 ,该平台逐渐承担了江苏油田几乎所有的测井资料处理和解释任务。

摘要：Magnetic field gradient tensor technique provides abundant data for delicate inversion of subsurface magnetic susceptibility distribution. Large scale magnetic data inversion imaging requires high speed and accuracy for forward modeling. For arbitrarily distributed susceptibility data on an undulated surface, we propose a fast 3D forward modeling method in the wavenumber domain based on(1) the wavenumber-domain expression of the prism combination model and the Gauss–FFT algorithm and(2) cubic spline interpolation. We apply the proposed 3D forward modeling method to synthetic data and use weighting coefficients in the wavenumber domain to improve the modeling for multiple observation surfaces, and also demonstrate the accuracy and efficiency of the proposed method.

摘要：在越来越多的室内设计中,阶梯已经超越了原本用于上下通行的功能,而是变成了一种空间装饰,或是变成了一个创意休息区。由伦敦设计工作室Jump Studios设计的forward办公室中就有对阶梯再设计的一次尝试。forward是一家年轻的数字技术公司,不仅需要一个办公空间,更需要的是一个形象展示空间,来表达他们年轻、聪明、打破常规的品牌精神。

摘要：全球首屈一指的切割仿水晶制造商施华洛世奇在北京展示闪烁魅力,举行了一个名为PAST forward的破天荒活动,既向往昔致敬,也为未来创作透视辉煌前景。

摘要：全球首屈一指的切割仿水晶制造商施华洛世奇在北京展示闪烁魅力。举行了一个名为PAST forward的破天荒活动,既向往昔致敬,也为未来创作透视辉煌前景。PAST forward是颂扬施华洛世奇的闪烁盛事,印证其112年以来的优良传统,创意动感的精神,矢志创新的毅力,以及旗下举世闻名的尊贵品牌。

摘要：时间转瞬即逝,时尚永不停歇。我们还在想夏天如何出彩,其实秋天已经悄然来临。本期小编带大家欣赏一下十个带有强烈风格的品牌,让他们为你的早秋时尚开场提供强有力的技术支持!Alexander Wang Alexander Wang又一次为我们展现他带有个人风格的设计。他用男服布料再现了经典迷你裙的性感,超长机车夹克搭配有色吊带长裙,两种元素的结合,既矛盾又和谐,创造出一种新的风格。

摘要：The field of shape grammars spans 47 years,but its potential in the practice and education of art,architecture,and engineering remains far from being ***,while reverse engineering in some engineering disciplines is well-established,its implementation in architectural design remains *** combining the two domains,this paper develops a novel method that merges the power of shape grammars as a parsing tool in reverse engineering to decode the morphogenesis of visual compositions in architectural *** merged power is demonstrated by decoding the formal language of a faqade design of a case study,in which seemingly few simple rules can derive surprisingly complex *** rules of the language can then be used to reconstruct parts of the case *** shape grammars in the architectural literature are applied on formal historical precedents,but the subject of morphological analysis in this paper is contemporary and has a style that exhibits non-orthogonal configurations,which initially appear far from being standardized or subjected to regulatory tectonic *** faqade derivation grammar is explained and resynthesized in various computations to explore emergent articulations that display its predictive,synthetic,and generative powers in addition to typical analytic ones.

摘要：近日，美国高端奢侈品电商FORWAR Dby Elyse Walker（以下简称forward）与美国时装设计师协会CFDA宣布正式成立“Rising Talent Program”，以扶持奢侈品时尚行业的新兴设计师。这是由forward赞助成立的首个正式培训项目，forward将与未来的奢侈品时尚设计师共享累积十余年的行业经验与知识。