摘要：This paper investigates analysis and design of Low-Density Parity-Check (LDPC) coded Bit Interleaved Coded Modulation (BICM) over Additive White Gaussian Noise (AWGN) channel. It focuses on Gray-labeled 8-ary Phase-Shift-Keying (8PSK) modulation and employs a Maximum A Posteriori (MAP) symbol-to-bit metric calculator at the receiver. An equivalent model of a BICM communication channel with ideal interleaving is presented. The probability distribution function of log-likelihood ratio messages from the MAP receiver can be approximated by a mixture of symmetric Gaussian densities. As a result semi-Gaussian approximation can be used to analyze the decoder. Extrinsic information transfer charts are employed to describe the convergence behavior of LDPC decoder. The design of irregular LDPC codes reduces to a linear programming problem on two-dimensional variable edge-degree distribution. This method allows irregular code design in a wider range of rates without any limit on the maximum node degree and can be used to design irregular codes having rates varying from 0.5275 to 0.9099. The designed convergence thresholds are only a few tenths, even a few hundredths of a decibel from the capacity limits. It is shown by Monte Carlo simulations that, when the block length is 30,000, these codes operate about 0.62–0.75 dB from the capacity limit at a bit error rate of 10–8.

摘要：In this paper,we discuss in detail the basic issue of green design and consider an energy efficiency function as the metric to evaluate green cellular ***,we investigate the transmit power required for an expected transmission capacity and propose a capacity-power formula based on the energy conservation and the Shannon capacity *** novel definitions of cell interference depth and handoff dynamic model are introduced and the corresponding expression of energy efficiency function is *** results show that the energy efficiency function is closely correlated with the transmitted/received power required and the cell *** work provides a useful basis for research and evaluation on green design and technology of cellular networks.

摘要：Since the late 1990s corneal crosslinking(CXL)has been proposed as a new possibility to stop progression of keratoconus or secondary corneal ectasia,with the promising aim to prevent progressive visual loss due to the evolution of the pathology and to delay or avoid invasive surgical procedures such as corneal *** possibility of strengthening corneal tissue by means of a photochemical reaction of corneal collagen by the combined action of Riboflavin and ultraviolet A irradiation(UVA),radically modified the conservative management of progressive corneal *** is a review of the state of the art of CXL,reporting basic and clinical *** paper describes basic principles,advantages and limits of different CXL techniques and possible future evolution of the procedure.

摘要：与外部环境完美融合的综合性公共设施本设施是兼具江东区政府办事处、礼堂、会议室等功能的综合性公共设施,作为环保建筑,为了能让不同使用者都能获得良好舒适的多样化体验,设计中通过多种办法将外部环境和内部空间完美的串连在一起。

摘要：设计理论MODE学园螺旋塔楼是名古屋站站前的新天际线.该建筑是发源于名古屋的Mode学园学校法人在时尚,计算机,医疗三个领域的专门院校的校舍.

摘要：与地铁站共同持续成长的城市——涩谷●涩谷站涩谷站拥有四家铁路公司的9条铁路线,是每天约有330万人利用的大型交通枢纽。正如地名所示,该站以谷底为中心建成,因其地形构造的影响,整个地铁站的结构宛如一个复杂的迷宫。

摘要：中国2010年上海世博会主题馆（以下简称主题馆）位于上海世博会规划围栏区B片区世博轴西测，为世博会“一轴四馆”楔心建筑群的重要组成部分，也是世博会永久保留建筑。

摘要：通过东京站和城市的一体化开发(TOD)进行城市再生作为东京城市再生的象征,对东京站和周边地区进行了一体化开发,推动了该地区的城市再生。西侧的丸之内口以“历史”为主题,以保留修复红砖站舍为中心进行了一系列的升级改造,而东侧的八重洲口则以象征东京“未来”的“先进性”和“先端性”为目标进行再开发。

摘要：＂未来之光＂项目位于被坡道环绕的谷状空间中,狭窄的小巷呈放射状伸向四周,这里每天人来人往总是充满活力。这份繁华,来自于人们身边街道上林立的办公、文化、商业设施的多样性。本项目的设计是将繁华的涩谷想象成由纵向累积而形成的街道。街道被替换成了电梯和扶梯在各层停止,为解决复杂的动线问题,还在南北两侧配置了连接主要到达层和共用大厅层的电梯来回穿梭。外观上,根据各种用途采用了表现不同的构建板块,各板块之间设置为共用大厅空间（交叉点）和屋顶庭院（花园）,这样即使在高层部位,来自各处的人们依然可通过交流产生协同效应,从而使这里成为繁华之源。

摘要：The recent social processes that are striking the Republic of Macedonia are distorting the nature of many sophisticated socio-anthropological phenomena, including the artistic practices. Thus, we will try to briefly elaborate on several tendencies about contemporary art in the Republic of Macedonia, by "screening" the theoretical discourses on the issue and by critical perception of recent practices concerning the field. Today"s views on the creative practices, incorporated in "conceptual" packages that should develop a new culture of living, are manifested in the creative industries, have been just recently recognized in the Macedonian society. The "propaganda" character of the treatment of artistic practice changes only formally the media of their manifestations. The idea about the possible and necessary engaged attitude of art towards society had its place also in the modern as well in the postmodern concept of art. In the Republic of Macedonia this "ideological" attitude towards art regretfully has also become the main mechanism for political domination, manifested mainly in architecture and landscaping of public space. The commercialisation of art supported by the media imposes the discourses of popular art over the content of high art. It seems that art is represented in the field of "education and science" in the Republic of Macedonia only when certain pragmatic, frequently politicised, interests need to be satisfied.