问题的部分原因在于很多次优按揭贷款发放于2006年末到2007年初，这段时期正好是信贷膨胀的末期。
Part of the problem is that much of the Alt-A lending came at the tail-end of the credit boom in late 2006 and early 2007.
他们不用总是用次优的方案解决问题。
接着次优抵押贷款市场的问题可能会进一步扩大，阻止信誉良好的借贷者贷款，然后又会反馈到房价上。
And troubles in the subprime mortgage market may spread, inhibiting lending to borrowers in better standing, and thus feeding back into prices.
历史上，许多这类问题是由VR硬件因素次优化所引起的，如系统延迟。
Historically, many of these problems have been attributed to sub-optimal VR hardware variables, such as system latency.
问题源自信贷市场，并首先反映在次优级贷款抵押的范围已经扩散到了我们的整个金融体系。
Problems that originated in the credit markets and first showed up in the area of subprime mortgages have spread throughout our financial system.
次优按揭出问题并不奇怪。
从而将两点边值问题解序列的有限次迭代结果作为系统的次优控制律。
Some finite iterative result of the two-point boundary value problem sequence is taken as a suboptimal control law of the system.
针对交换式工业以太网的数据通信特点，采用遗传算法来寻找其网络划分问题的次优解。
Considering the communication characteristics of switched industrial Ethernet, genetic algorithms are used to find near-optimal solution for its network partition problem.
实验证明，基于实例的方法来求解POMDP问题，能够获得性能较好的次优解。
With the performance analyzed and compared through experiments on common workbench, solving POMDP problems using instance based methods can produce good sub-optimal solutions.
本文主要讨论秘书问题的变形——“组面试问题”在目标是选择最优或次优时的最佳选择策略（停止规则），采用的主要方法是后退归纳法和边界阶段方法。
This article deals with a natural variation of the classical secretary problem called the group interview problem, in which each group contains several alternatives and each group of alternatives .
本文论述了超高压输电线路线性二次优化控制若干的问题。
This paper addresses problems in linear quadratic optimal control of EHT transmission line.
研究具有动态输出反馈的连续广义系统的H2次优控制问题。
The H2 suboptimal control for continuous-time descriptor systems with dynamic output feedback is studied.
根据优化及约束目标，再将其转化为线性二次优划问题从而得到系统当前的控制动作。
With optimization and restricted targets, it uses the means of linear quadratic optimal control to get the current controller output.
论文提出基于经验搜索的多级存储层次优化方法，将优化多级存储层次问题转化为对优化参数的经验搜索问题，并基于遗传算法选择全局最优解。
It turns the problem of optimizing across multiple levels of the memory hierarchy to an empirical search to optimization parameter problem, and selects the best overall solution.
为了满足求解此问题的时间、空间要求，寻找某个次优的、可有效计算的可行解成为自然而合理的办法。启发式方法就是基于这一思想所设计出的。
For satisfying the requirements of the time and space, it is reasonable and natural to compute certain sub-optimal feasible solution, and heuristic methods are designed based on such an idea.
基于对实际系统中信道冲激响应(CIR)泄漏问题的详细分析，提出了一种次优的时域信道估计算法。
Based on the detailed analysis of the channel impulse response (CIR) leakage in the practical OFDM systems, a sub-optimal time domain channel estimation algorithm is proposed.
研究了非方广义系统带干扰抑制的奇异线性二次指标次优控制问题(LQ次优控制问题)。
A singular linear quadratic suboptimal control problem (LQ suboptimal control problem) is considered for nonregular descriptor systems with disturbance rejection.
无功运行优化问题的关键在于获得最优解或较好的次优解。
The key to the optimization of reactive power operation is to get optimum value or satisfying quasi optimum value.
随后为降低求解该优化问题的复杂度，提出两步次优算法，将问题分解为子载波分配和功率分配。
Then, to reduce the complexity, we propose a two-step suboptimal algorithm that separates subcarrier and power allocation.
本文研究一类非线性定常系统的次优控制问题。
In this paper, the research of the suboptimal control for a class of nonlinear systems is reported.
针对一般形式的非线性系统，研究了有终端约束的稳定预测控制策略-有限时域滚动控制相对传统最优控制的次优性问题。
In this paper, considering nonlinear systems, the suboptimality of receding horizon control with Terminal Constraints is presented and compared with traditional optimal control.
并以权值次优的节点为管理员候选者，避免了因管理节点失效导致崩溃等问题。
And to value the sub-optimal nodes as candidates for management, in order to avoid the collapse for the failure of nodes, and so on.
该文研究线性时滞定常系统的次优控制问题。
In this paper the suboptimal control of linear systems with time-delay is studied.
基于用户调度机会公平性最优化问题模型，通过寻求次优解的方案提出一种用户公平性与时延保证链路调度算法。
One suboptimal user fairness and delay guarantee link scheduling algorithm is proposed based on the user fairness optimization problem model.
在分析嵌套移动网络次优化路由问题后，提出路由优化方案ROPIO。
New route optimization solution called ROPIO is proposed to solve suboptimal routing problem caused by nested mobile networks.
在分析嵌套移动网络次优化路由问题后，提出路由优化方案ROPIO。
New route optimization solution called ROPIO is proposed to solve suboptimal routing problem caused by nested mobile networks.
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