一、群同步系统的性能 群同步性能主要指标是包括漏同步概率P假同步概率P2及同步建立时间 13。下面,我们主要以连贯插入法为例进行分析。 a)漏同步概率P 由于干扰的影响,接收的同步码组中可能出现一些错误码元,从而使识别器 漏识已发出的同步码组,出现这种情况的概率称为漏同步概率,记为P 以n位巴克码识别器为例,设判决门限为6此时七位巴克码只要有一位码 出错,七位巴克码全部进入识别器时相加器输出由7变为5,因而出现漏同步

一、选择题(共6题30分) 1.5分(2170)2170 在下列两题中,选择你认为正确的答案:(1)在某恒定温度下,二元物系的p-x图如下所示,则在x处组分A的活度系数是:() (A)=CH/CE (B)=CH/CD (C)7A-CH/CG

1 Neglect: A Disorder of Spatial Attention 1 Anjan Chatterjee 2 Bálint’s Syndrome: A Disorder of Visual Cognition 27 Robert Rafal 3 Amnesia: A Disorder of Episodic Memory 41 Michael S. Mega 4 Semantic Dementia: A Disorder of Semantic Memory 67 John R. Hodges 5 Topographical Disorientation: A Disorder of Way-Finding Ability 89 Geoffrey K. Aguirre 6 Acquired Dyslexia: A Disorder of Reading 109 H. Branch Coslett 7 Acalculia: A Disorder of Numerical Cognition 129 Darren R. Gitelman 8 Transcortical Motor Aphasia: A Disorder of Language Production 165 Michael P. Alexander 9 Wernicke Aphasia: A Disorder of Central Language Processing 175 Jeffrey R. Binder 10 Apraxia: A Disorder of Motor Control 239 Scott Grafton 11 Lateral Prefrontal Syndrome: A Disorder of Executive Control 259 Robert T. Knight and Mark D’Esposito Contributors 281

Transmittal No. 96-E1 (9/96) Form FDA 2905a (6/92) INDEX: METHODS–1 Pesticide Analytical Manual Vol. I INDEX: METHODS Index to PAM I Methods, by Chemicals Tested for Recovery Codes: C: complete (recovery); P: partial; S: small; V: variable; R: recovered; NR: not recovered

Standard[ s t aen dad]n.标准 Hierarchy ['h a iara:ki]n体系,分层结构 Synchronous['s i6 k ranas]a同步的 Approve ra p r u:v]v.批准,审订,通过 Tributary [t r i bj u tar i]a支流的,从属的,辅助的 Map[map]v.绘制,设计,映射,变换

第三节国际结算方式比较 一、结算方式总结 1、汇款(T/T、M/T、D/D) 2、托收(D/P、D/A) 3、信用证(L/C) 4、银行保函(L/G)* 5、备用信用证(standby/C)* 6、国际保理(Factoring)

PART I THE SITUATION AND RECENT DI NTS IN THE FOREST SECTOR Recent developments his chapter discusses some of the main issues effectiveness of forest management(see and emerging trends in the forest sector, Management, conservation and sustainable focusing largely on the last two to three years. development of forest resources, p. 6). A pilot As it is impossible to cover all nev assessment of the health of the worlds developments, notable events and significant

1.单质硼的熔点高于单质铝,试从它们的晶体结构加以说明。 2.为什么可形成A1(OH)和A1F6离子,而不能形成B(OH)和BF离子?

P87-17 A点位于第38带； 我国经度在75º-135º之间，6º带带号从13 至23，1.5º带带号从51至91，所以我国境 内的某点如果位于第38带，该坐标值只可 能是按3º带投影计算而得；该带的中央子 午线的经度是38×3=114º

一、是非题(本大题6小题,每小题2分,共12分 1.图a所示结构周期为T,则图b所示体系周期为T=2+T2+3()k 2.结构刚度(也称劲度)方程,其矩阵形式为:(a)(b)}=P}它是整个结构所应满足的变形条件()