船载测控雷达海上无塔校相技术

当前国际商品市场上知识产权产品的平行进口相当普遍,但对平行进口的合法性众说纷纭,至今尚无定论。包括WTO《与贸易有关的知识产权协议》(TRIPs)在内的知识产权国际公约也都未解决这一问题。因此各国只能依据本国的法律加以处理。在知识产权领域,我国虽然已在很短的时间内建立起了较为完善的法律体系,但平行进口方面的立法仍是空白。本文拟分析国际上对知识产权平行进口采取的一些处理原则,进而提出符合我国国情的立法建议。     

活塞式小体积管在质量流量计检定中的应用

活塞式小体积管因为体积小，结构复杂，检测的体积需要非常准确的转换成质量流量，制约了活塞式小体积管在检定质量流量计方面的发展。阐述了在活塞式小体积管检定系统中采用脉冲插入、在线密度计实时和准确的测量被检介质的密度等技术，建立活塞式小体积管检定质量流量计的新方法，用以解决高精度质量流量计的检定问题。     

FAST SWAPTION PRICING IN GAUSSIAN TERM STRUCTURE MODELS

We propose a fast and accurate numerical method for pricing European swaptions in multifactor Gaussian term structure models. Our method can be used to accelerate the calibration of such models to the volatility surface. The pricing of an interest rate option in such a model involves evaluating a multidimensional integral of the payoff of the claim on a domain where the payoff is positive. In our method, we approximate the exercise boundary of the state space by a hyperplane tangent to the maximum probability point on the boundary and simplify the multidimensional integration into an analytical form. The maximum probability point can be determined using the gradient descent method. We demonstrate that our method is superior to previous methods by comparing the results to the price obtained by numerical integration.     

Credit default swap calibration and derivatives pricing with the SSRD stochastic intensity model

We introduce the two-dimensional shifted square-root diffusion (SSRD) model for interest-rate and credit derivatives with (positive) stochastic intensity. The SSRD is the unique explicit diffusion model allowing an automatic and separated calibration of the term structure of interest rates and of credit default swaps (CDSs), and retaining free dynamics parameters that can be used to calibrate option data. We propose a new positivity preserving implicit Euler scheme for Monte Carlo simulation. We discuss the impact of interest-rate and default-intensity correlation and develop an analytical approximation to price some basic credit derivatives terms involving correlated CIR processes. We hint at a formula for CDS options under CIR + + CDS-calibrated stochastic intensity.Received: March 2004, Mathematics Subject Classification (2000): 60H10, 60J60, 60J75, 91B70JEL Classification: G13     

EQUITY CORRELATIONS IMPLIED BY INDEX OPTIONS: ESTIMATION AND MODEL UNCERTAINTY ANALYSIS

We propose a method for constructing an arbitrage‐free multiasset pricing model which is consistent with a set of observed single‐ and multiasset derivative prices. The pricing model is constructed as a random mixture of N reference models, where the distribution of mixture weights is obtained by solving a well‐posed convex optimization problem. Application of this method to equity and index options shows that, whereas multivariate diffusion models with constant correlation fail to match the prices of index and component options simultaneously, a jump‐diffusion model with a common jump component affecting all stocks enables to do so. Furthermore, we show that even within a parametric model class, there is a wide range of correlation patterns compatible with observed prices of index options. Our method allows, as a by product, to quantify this model uncertainty with no further computational effort and propose static hedging strategies for reducing the exposure of multiasset derivatives to model uncertainty.     

Donation Payment Mechanisms and Contingent Valuation: An Empirical Study of Hypothetical Bias

Donation payment mechanisms are well suited forsome contingent valuation studies. In aneffort to better understand the discrepancythat has been consistently found between actualand hypothetical donations, we investigate anapproach to estimating actual willingness todonate using contingent donations with afollow-up question in which respondents ratethe level of certainty about their response tothe contingent donation question. The approachallows us to estimate the magnitude of thehypothetical bias and identify the respondentsresponsible for the bias. Identification ofthe respondents responsible for thehypothetical bias is the first step towarddeveloping an understanding of the causes andpossible remedies. In this study we find thatmost of the respondents (80%) to thecontingent donation question provide a responseconsistent with how we predict they wouldrespond in an actual donation situation.     

SPARSE CALIBRATIONS OF CONTINGENT CLAIMS

The two problems of determining the existence of arbitrage among a finite set of options and of calculating the supremum price of an option consistent with other options prices have been reduced to finding an appropriate model of bounded size in many special cases. We generalize this result to a class of arbitrage-free  m -period markets with    d  + 1   basic securities and with no prior measure. We show there are no dominating trading strategies for a given set of  l  contingent claims if and only if their bid-ask prices are asymptotically consistent with models supported by at most   ( l  +  d  + 1)( d  + 1) ^{m −1}   points, if    m  ≥ 1  . An example showing the tightness of our bound is given.     

中国相机抉择财政政策研究

本文基于相机抉择原则在我国宏观调控中的实际运用,运用时间一致性、趋势性研究,对中国财政政策与经济波动的关系进行分析,从制度背景、国情实际、自身特性及操作难度等方面分析相机抉择在运用过程中产生宏观调控实际效应偏差的主要原因,并提出政策建议。     

信息产品在建筑工程管理的应用

工程管理行业是智力密集型服务行业,必然要创建建筑工程管理信息化管理系统,学习和利用各种信息工具工作,提高工程管理的效率,是工程管理人员的创建学习新普遍要求。