In this talk we will consider two approaches in dealing with the risk of supplier bankruptcy. In the first model, we study the effects of supply disruption risk in a supply chain where one buyer deals with competing risky suppliers who may default during their production lead-times.
為了使音頻信號分析儀小巧可靠，成本低廉，設(shè)計(jì)了以2片MSP430F1611單片機(jī)為核心的系統(tǒng)。該系統(tǒng)將音頻信號送入八階巴特沃茲低通濾波器，對信號進(jìn)行限幅放大、衰減、電平位移、緩沖，并利用一單片機(jī)負(fù)責(zé)對前級處理后的模擬信號進(jìn)行采樣，將采集得到的音頻信號進(jìn)行4 096點(diǎn)基2的FFT計(jì)算，并對信號加窗函數(shù)提高分辨率，另一單片機(jī)負(fù)責(zé)對信號的分析及控制顯示設(shè)備。此設(shè)計(jì)精確的測量了音頻信號的功率譜、周期性、失真度指標(biāo)，達(dá)到較高的頻率分辨率，并能將測量結(jié)果通過紅外遙控器顯示在液晶屏上。
Abstract:
o make the audio signal analyzer cheaper， smaller and more reliable， this system sends the audio signal to the eight-order butterworth filter， and then amplifies， attenuates， buffers it in a limiting range， transfers the voltage level of the signal before utilizing two MSP430F1611 MCU to realize the audio analysis. One is charged for sampling and dealing with the processed audio signal collected by the 4096 point radix-2 FFT calculation and imposes the window function to improve the frequency resolution. The other one controls the display and realizes the spectrum， periodicity， power distortion analysis in high resolution which is displayed in the LCD screen through the infrared remote control.
介紹一種基于CAN總線的牽引變電站自動(dòng)化系統(tǒng)通訊規(guī)約的設(shè)計(jì)，CAN通訊規(guī)約采用標(biāo)準(zhǔn)幀，報(bào)文采用主動(dòng)發(fā)送和發(fā)送查詢兩種處理形式。該設(shè)計(jì)在城市輕軌與地鐵牽引變電站中的應(yīng)用表明：可實(shí)現(xiàn)間隔層和通訊處理層的數(shù)據(jù)快速、可靠的交換，提高牽引變電站的安全性和穩(wěn)定性
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Abstract:
This paper firstly presents a kind of design dealing with communicational protocol to the traction substation automation system based on CAN bus,and then comes up with the ideas that all frames of CAN communicational protocol should adopt the standard frame,and that messages be processed by two ways:sending initiatively and sending quiries.Subway and light rail application shows that the use of the CAN bus is possible to exchange data quickly and reliably between the layers of the middle and the communicational processing,hence to improve the safety and stability of traction substations.
利用Atmel公司的ATmega168微處理器，采用A/D轉(zhuǎn)換方式來實(shí)現(xiàn)按摩椅控制器的鍵盤接口，通過在硬件電路中巧妙地選擇電阻，在軟件設(shè)計(jì)中采用數(shù)字濾波、二分法和區(qū)間鑒定等方法，靈敏可靠地實(shí)現(xiàn)了按摩椅中30個(gè)按鍵的處理。給出了硬件電路設(shè)計(jì)和軟件設(shè)計(jì)思想以及部分匯編代碼。
Abstract:
This paper chooses A/D conversion method to realize the keyboard interface of the controller by using ATmega168 microchip from Atmel Company.It accomplishes 30-key dealing sensitively and reliably in massage chair through skillfully selecting resistors in hardware circuit and using digital filter,dichotomy and area-judging method in software design.The hardware design circuit, software design idea and partly assembles code are presented mainly.
Locally weighted polynomial regression LWPR is a popular instance based al gorithm for learning continuous non linear mappings For more than two or three in puts and for more than a few thousand dat apoints the computational expense of pre dictions is daunting We discuss drawbacks with previous approaches to dealing with this problem
The code is fairly straightforward, except perhaps for the call to convertColumnIndexToModel. That call is necessary because if the user moves the columns around, the view s index for the column doesn t match the model s index for the column. For example, the user might drag the Vegetarian column (which the model considers to be at index 4) so it s displayed as the first column — at view index 0. Since prepareRenderer gives us the view index, we need to translate the view index to a model index so we can be sure we re dealing with the intended column
硬件設(shè)計(jì)指南(PDF格式)，主要包括：Low Voltage Interfaces；Grounding in Mixed Signal Systems；Digital Isolation Techniques； Power Supply Noise Reduction and Filtering； dealing with High Speed Logic
