THE WAGES OF NATIVE-BORN ASIAN AMERICANS AT THE END OF THE 20TH CENTURY
A method (100) for tuning a voltage controlled oscillator by changing electrical circuit parasitics includes a first step (102) of providing a voltage controlled oscillator circuit on a circuit board and a plurality of different metal lids each having different numbers, sizes and locations of holes. Each different lid presents a different electrical circuit parasitic to the voltage controlled oscillator. In a second step (104), the voltage controlled oscillator frequency is measured, and the frequency shift needed to achieve a desired operating frequency is calculated in a third step (106). In a fourth step (108), a lid is chosen that will present the parasitics needed to provide the amount of frequency shift needed. As a last step (110), the chosen lid is attaching to the circuit board to obtain the desired nominal operating frequency from the voltage controlled oscillator.
Geopolitics and Identity-Making in US Diasporic Chinese Churches
Using ethnographic and interview data, my paper analyzes how geopolitical relationship manifest at the community level in Chinese America Responding to Lien Pei-Te’s call to meaningfully disaggregate among the commonly “lumped together Chinese Americans”, I draw upon the experiences of specific groups of Chinese immigrants to the US, post-1949 migrants to Taiwan, pre-1949 migrants to Taiwan, and the People’s Republic of China (PRC) Chinese, in order to understand how boundary drawing occurs in their various communities but also consider how the act of being “lumped together” itself in the US context complicates identity formation. The year 1949 marks the communist victory in the PRC as well as the inaugural year of the Kuomingdang (KMT)-led Republic of China (ROC) in Taiwan. Carved out of these historical events, the contemporary social relations among these groups persist after their migration to the US, but they manifest differently in various domains of practice, including religious ones. As political relationships among states reorganizes their social relations, the religious site offers what Carolyn Chen calls a “moral vocabulary” to articulate, contemplate, and, in some cases, justify these divides. Even within a Christian context, messages of inclusivity are not universal but redefined according to the political and social contexts. By not assigning a singular definition to Christian thought, my paper makes way for a theorization of an intersectional Christian identity.
Effects of reservoir volume on performance of pulse tube cooler.
A pulse tube cooler has the advantages of long-life and low-vibration over conventional cryocoolers such as G-M and Stirling coolers because of the absence of moving parts at low temperature. On the other hand, the combination of a reservoir and orifice is indispensable to optimize the performance of pulse tube coolers. In order to make the pulse tube cooler compact for practical applications, the volume of reservoir should be minimized. This paper analyzes the effects of the reservoir volume on the thermodynamic performance of various components in a simple orifice and a double-inlet pulse tube cooler by combining a linearized model with a thermodynamic analysis. Expressions of entropy production for those components are presented. The results show that the reservoir volume has a significant influence on the entropy production in the various components when the reservoir to pulse tube volume ratio is smaller than about 5. The ratio is important to determine the minimum reservoir volume for a pulse tube cooler. Optimum settings for a double-inlet pulse tube cooler are also discussed.