Sensory Characterization and Consumer Preference Mapping of Fresh Sausages Manufactured with Goat and Sheep Meat

The main objective of this study was the sensory characterization, by a taste and a consumers’ panel, of fresh sausages from 140 culled goats and 140 culled ewes. Species and type of preparation effects were studied. All data were previously analyzed by analysis of variance. Taste panel data were analyzed by a Generalized Procrustes Analysis (GPA). Consumers’ panel data were analyzed by Preference Mapping. The 1st 2 factors explained 88.22% of total variation in GPA. Different sausages samples were perfectly differentiated by assessors. Goat sausages have been considered harder, more fibrous, and less juicy than sheep sausages. The panelists observed that sheep sausages without paprika had greater intensity of flavor, tasted spicy, and had an off‐odor, while goat sausages with paprika were considered sweeter. Consumers’ panel did not show any preference for the different types of sausages. This means that all types of sausages can have market opportunity.     

Application of RFID technologies in the temperature mapping of the pineapple supply chain

Current temperature tracking systems lack the convenience and accuracy demanded by the real conditions of a fast-paced produce supply chain. In recent years RFID technology has been suggested to be an enhanced method for temperature tracking because of its many benefits, such as using little instrumentation, offering the quick readings necessary for real-time decision making, and allowing the capture of long-duration temperature profiles. However its limitation lies in that probeless systems fail to provide accurate temperature readings in some of the critical points of the pallet and the load. The objective of this work was to study the use of RFID in temperature monitoring by comparing the performance of RFID temperature tags versus conventional temperature tracking methods, as well as RFID temperature tags with probe versus RFID temperature tags without probes and their utilization along the supply chain. Therefore, the temperature mapping of a shipping trial comprising pallets of crownless pineapples instrumented using different RFID temperature dataloggers and traditional temperature dataloggers and packed in two kinds of packages (corrugated boxes and reusable plastic containers) inside a container was performed. The results showed that RFID temperature tags are analogous with regards to accuracy to the conventional methods, but have a superior performance because they allow quick instrumentation and data recovery, and the possibility of accessing the sensor program and data at any point of the supply chain without line of sight. In addition, the use of RFID tags with probe was justified by its role in determining the efficiency of the pre-cooling operations and low temperature abuse tracking during transportation and refrigerated storage; while the RFID tags without probe proved useful for high temperature abuse monitoring during transportation and refrigerated storage. The creation of a RFID sensor with a probe, able to record both ambient and pulp temperatures simultaneously is suggested. Presented at Food Processing Automation Conference, American Society of Agricultural and Biological Engineering (ASABE), Providence, RI, USA, June 28–29 2008.     

基于ATM-PON的视频点播系统

分析了现有的一些典型的接入网的局限性及实施 PON接入的可行性 ,认为随着用户对网络容量需求的不断增长 ,光纤到家以及以 VOD为代表的宽带业务离我们并不遥远。为此 ,提出了一个基于 ATM- PON的视频点播系统。介绍了 G.983.1所规范的 ATM- PON网络技术 ,分析了系统中MPEG- 2视频流的传输途径 ,并给出了 MPEG- 2信号打包成 ATM信元及 ATM信元映射进 SDH虚容器的方法。     

Coupled Inversion of Pressure and Tiltmeter Data for Mapping Hydraulic Fracture Geometry

Pressure and tilt data are jointly inverted to simultaneously map the orientation and dimensions of a hydraulic fracture.The deformation induced by a fracture under internal pressure is modeled using the distributed dislocation technique.The planar fracture is represented by four quarter ellipses,joined at the center and sharing semi-axes.This configuration provides a straightforward model for characterizing asymmetric fracture geometry.The inverse problem of mapping the fracture geom-etry is formulated using the Bayesian probabilistic method,combining the a priori information on the fracture model with updated information from pressure and tilt data.Solving the nonlinear inverse problem is achieved by pseudo-randomly sam-pling the posterior probability distribution through the Markov chain Monte Carlo method.The resulting posterior probability distribution is then explored to assess uncertainty,resolution,and correlation between model parameters.Numerical experi-ments are conducted to verify the accuracy and validity of the proposed analysis method in mapping the fracture geometry using synthetic pressure and tilt data.     

自伴算子空间上满足[φ(A~2),A]+[A~2,φ(A)]=0的可加映射

运用算子论的方法,研究了自伴算子空间上满足[φ(A2),A]+[A2,φ(A)]=0的可加映射。如果可加映射φ:Bs(H)→Bs(H)满足对所有A∈Bs(H)有[φ(A2),A]+[A2,φ(A)]=0,那么存在λ∈R,可加映射f:Bs(H)→R,以及算子K∈Bs(H),使得对所有A∈Bs(H)有φ(A)=iAK-iKA+λA+f(A)I。即自伴算子空间上满足[φ(A2),A]+[A2,φ(A)]=0的可加映射是导子与可交换映射之和。     

Menger概率n-度量空间中的不动点定理

引进了概率ｎ－度量空间,并将文「１」、「２」的某些主要结果拓广至Ｍｅｎｇｅｒ概率ｎ－度量空间。     

用OpenGL开发三维交互式虚拟场景

介绍了Ｍｓ Ｗｉｎｄｏｗｓ环境下ＯｐｅｎＧＬ的体系结构和开作原理,深入剖析了用ＶｉｓｕａｌＣ＋＋开发真实感３Ｄ实时虚拟场是时采用的技术特点,并构造了两个可重用和继承的类－纹理贴图和画面输出保存２的设备无磁位图类以及初始化ＯｐｅｎＧＬ工作环境并正确设置调色板的视图类,在此基础上设计了一个模拟３Ｄ射击游戏。     

层次化单元装配模型

装配设计是产品设计的重要设计阶段,在分析装配设计和层次化单元任务模型的基础上,建立了支持装配设计的面向对象的层次化单元装配模型。装配单元的层次化结构表达了功能结构,通过功能映射可以建立功能到单元的对应关系。研究了基于层次化装配单元模型的装配设计,讨论了支持装配设计的开发的单元库分级管理策略。     

伪压缩型映象迭代逼近的收敛性问题

研究一类伪压缩型映象迭代逼近的收敛性问题,其结果改进和推广了已有结果．