Spur的問題，透過圖書和論文來找解法和答案更準確安心。 我們找到下列訂位、菜單、價格優惠和問答集

Destination Moon: The Remarkable and Improbable Voyage of Apollo 11

為了解決Spur的問題，作者Maurer, Richard 這樣論述：

Richard Maurer is a writer, photo researcher, and exhibit designer. His books for young readers include The Wright Sister: Katharine Wright and her Famous Brothers. The Wild Colorado, winner of the Western Writers Spur Award, and Airborne: The Search for the Secret of Flight, winner of the American

Institute of Physics Science Writing Award. A native of West Texas, he now lives in Central Massachusetts with his wife and two sons.

Spur進入發燒排行的影片

漸開線型蝸桿磨齒之研究

為了解決Spur的問題，作者黃柏淯 這樣論述：

蝸桿蝸輪組是屬於空間交錯軸間的動力傳輸元件，可以提供傳統螺旋齒輪及平行軸之正齒輪所無法實現的單級就達成大減速比的效果。蝸桿蝸輪組也因此大多用於需要大減速比的交錯傳動之中，並因其傳動比高、噪音低、運行平穩、結構簡單等特點，被廣泛應用於各種齒輪減速系統中。在本論文先依照ZI 型蝸桿之磨削方式，推導磨削ZI 型蝸桿之磨輪數學模式，並且建立修整磨輪加工之數學模式，以利於電腦數控之蝸桿磨床機台之應用。本研究也以機台進行加工，並將加工出的蝸桿以齒輪檢驗機來進行量測。量測結果也證明我們所推導的磨修方式是可以實際運用於蝸桿磨床上。

At the Crossroads of Music and Social Justice

為了解決Spur的問題，作者 這樣論述：

Music is powerful and transformational, but can it spur actual social change? A powerful collection of essays, At the Crossroads of Music and Social Justice studies the meaning of music within a community to investigate the intersections of sound and race, ethnicity, religion, gender, sexual orienta

tion, and differing abilities. Ethnographic work from a range of theoretical frameworks uncovers and analyzes the successes and limitations of music’s efficacies in resolving conflicts, easing tensions, reconciling groups, promoting unity, and healing communities. This volume is rooted in the Crossr

oads Section for Difference and Representation of the Society for Ethnomusicology, whose mandate is to address issues of diversity, difference, and underrepresentation in the society and its members’ professional spheres. Activist scholars who contribute to this volume illuminate possible pathways a

nd directions to support musical diversity and representation.At the Crossroads of Music and Social Justice is an excellent resource for readers interested in real-world examples of how folklore, ethnomusicology, and activism can, together, create a more just and inclusive world. Brenda M. Romero

is Professor Emerita at the University of Colorado, Boulder. She earned a PhD in Ethnomusicology from the University of California, Los Angeles, and a BMus and a MMus in Music Theory and Composition from the University of New Mexico. In addition to extensive research in New Mexico, she conducted fie

ldwork in Mexico, Colombia, and Peru, including as Fulbright Scholar in Mexico in Colombia. Her monograph, Matachines Transfronterizos, Warriors for Peace at the Borderlands is forthcoming.Susan M. Asai is Professor Emerita from the Music Department at Northeastern University in Boston. Her research

encompasses Japanese folk performing arts and Asian American music and cultural politics. She has published numerous articles and encyclopedic entries on Japanese/Asian American music and identity. Asai’s book projects include Nōmai Dance Drama: A Surviving Spirit of Medieval Japan and Sounding Our

Way Home: Japanese American Musicking and the Politics of Identity (forthcoming).

三階串接積分器回授型三角積分調變器控制之直流/直流低漣波降壓轉換器

為了解決Spur的問題，作者呂宜靜 這樣論述：

傳統的切換式轉換器使用固定開關頻率的PWM(Pulse Width Modulation)做為控制電路，可以達到高效率，但其控制方法容易在輸出上看到固定頻率的漣波電壓。對於較雜訊敏感的RF電路或混訊電路而言，這些漣波與其產生的高次項諧波雜訊容易耦合到基板及供應線上，影響此類電路。因此本篇論文以一離散時間的三階串接積分器回授型三角積分調變器(Discrete Time 3rd Order CIFB Delta Sigma Modulator)當作控制電路的降壓轉換器。為了達到低雜訊影響的降壓轉換器，利用三角積分調變器的超取樣及雜訊移頻特性，減少頻寬內的開關雜訊並將其移至高頻。將調變器的輸出結果

透過一位元的量化之後，作為控制Power-MOS的開關訊號。量化器調變結果為一頻率不固定且佔空比不固定的訊號，與傳統型的降壓轉換器相比，可降低在輸出看到的雜訊，且頻譜上不會存在明顯的開關頻率。本篇論文晶片使用TSMC 0.18um製程，操作電壓為3.3V，降壓轉換器的輸入電壓範圍為3V-3.6V，輸出電壓範圍為1V-3V，取樣頻率為4.95MHz，最大可承受負載電流為800mA，頻譜展示開關頻率在輸入電壓3.3V輸出電壓1.8V時達到-85.32dBm，在輸入電壓3.6V輸出電壓3V且負載電流為200mA時測得最高效率為89.068%，晶片總面積2.76 mm2。