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In either case, the Wiener-Khinchin theorem assures that self-correlation functions can be represented as Fourier transforms of non-negative measures-the squared norms of the amplitudes.
      
Orthogonally Additive Polynomials over C(K) are Measures-A Short Proof
      
However, we also found that the strength of the association between neighborhood poverty level and two of the spatial accessibility measures-distance and public transportation travel time-is less strong in African-American neighborhoods.
      
Finally, it treats domestic product, trade balance, and capital account-using the budget, the exchange rate, and the monetary measures-as corrective devices.
      
It reports the use of a specific methodological tool-the Aston measures-as an approach to these issues.
      
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A pulse generator,consisting of a neon lamp and a transformerb with a saturated core,is deseribed,construered and lested.It maybe conveniently used for measuring espeerally for reecording,theheight of the Keaviside layer.

在国立中央研究院物理研究所之实验室内,近用一稀氖气管同一有饱和铁核之变压器,制成一种脉流发电机,颇为适用。按脉流之用处,固不一而足,但制此机之本意,盖欲以之测量并纪錄天空中电子层之高度也。

The dielectrie constants of toluene, carbon bisulphide, normal pentane, normal hexane, ethyl ether and iso-amyl alcohol were measured by a capacity bridge using a specially constructed liquid condenser at both 30° and 75℃ (22.4℃ only for the last liquid), for frequencies of 600,1000 and 2000 cycles per sec. and under pressures from 1 up to 12,000 kg/cm2. For the first four liquids, the dielectric constant is practically independent of the frequencies

作者用一电容桥及一特制之液体蓄电器以量甲苯,二硫化碳,正戊烷,正己烷,乙醚,及异戊醇之比电容。所用温度为摄氏三十及七十五度(异戊醇之温度仅为二十二度四),频率为每秒六百,一千及二千周,压力自一气压高至一万二千气压。前四液之比电容几与所用频率无关。(ε-1)/(ε+2)·1/d,(ε-1)/d及(ε~(1/2))-1/d三式中以第一式最近一常数,然压力渐增第一式之值恒随之而渐减,至一万二千气压时(在甲苯为九千五百气压),其减少约数在甲苯及二硫化碳为百分之三,在乙醚为百分之八,在异戊醇为百分之十九,显随电矩之增加而增加,至其原因篇中亦略加说明。 篇中图表惠蒙同事朱福炘先生代为抄绘,附誌谢忱。

Self-recording system is devised and used to measure potential gradient at Yenching. In fine weather the results show two maxima and two minima for a whole day. During raining potential gradient is constant at zero value, except when lightening and thunderstorm occur in which case the potential gradient changes rapidly both in magnitude and direction.

本篇所述,为在北平燕京大学用静电计及一连续记录器测量大气电位梯度之方法及结果测量方法,乃用一种均位器(eqalizer)将离地面约3至6米高之电位显示于静电计上再用照相纸将此电位制成连续记录。测量所得结果如下:晴天之电位梯度。一日之中,有二最高值及二最低值雨时梯度即降至零,且此值非至雨止不变。当闪电及雷飓时,梯度之方向与值,变易极速。且较晴天时为大。

 
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