Destination-Language Proficiency in Cross-National Perspective: A Study of Immigrant Groups in Nine Western Countries

Immigrants’ destination-language proficiency has been typically studied from a microperspective in a single country. In this article, the authors examine the role of macrofactors in a cross-national perspective. They argue that three groups of macrolevel factors are important: the country immigrants settle in (“destination” effect), the sending nation (“origin” effect), and the combination between origin and destination (“setting” or “community” effect). The authors propose a design that simultaneously observes multiple origin groups in multiple destinations. They present substantive hypotheses about language proficiency and use them to develop a series of macrolevel indicators. The authors collected and standardized 19 existing immigrant surveys for nine Western countries. Using multilevel techniques, their analyses show that origins, destinations, and settings play a significant role in immigrants’ language proficiency.

Designing trans-disciplinary research to support policy formulation for sustainable agricultural development

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Do Global Risk Factors Matter for International Cost of Capital Computations?

International financial markets are becoming integrated. Hence, globalrisk factor are increasingly important for portfolio selection andasset pricing. The recent empirical finance literature has confirmedthat both the global market portfolio and exchange rate risk factorsconstitute important determinants of asset returns. We show, however,that global risk factors do not importantly affect estimates of thecost of equity capital for a remarkably wide variety of companies. Weanalyze almost 3,300 stocks from nine industrialized countries overthe period 1980-1999. Incorporating global factors into cost ofcapital estimations leads to an adjustment of roughly 50 basis pointsper annum on average for the U.S. and 70 to 100 basis points for theother countries. Adjustments of this magnitude easily fall inside themargin of error associated with actual cost of capital computations.Specifically for U.S. companies, the amendment of the cost of capitalestimate is generally very small. This suggests that global riskfactors do not really matter for computing the cost of capital of U.S.firms.capital budgeting;cost of equity capital;exchange rate risk;valuation

Complete genome sequence of bovine polyomavirus type 1 from aborted cattle, isolated in Belgium in 2014

&lt;p&gt;The complete and fully annotated genome sequence of a bovine polyomavirus type 1 (BPyV/BEL/1/2014) from aborted cattle was assembled from a metagenomics data set. The 4,697-bp circular dsDNA genome contains 6 protein-coding genes. Bovine polyomavirus is unlikely to be causally related to the abortion cases. &lt;/p&gt;</p

Boosting capacitive blue-energy and desalination devices with waste heat

We show that sustainably harvesting 'blue' energy from the spontaneous mixing process of fresh and salty water can be boosted by varying the water temperature during a capacitive mixing process. Our modified Poisson-Boltzmann calculations predict a strong temperature dependence of the electrostatic potential of a charged electrode in contact with an adjacent aqueous 1:1 electrolyte. We propose to exploit this dependence to boost the efficiency of capacitive blue engines, which are based on cyclically charging and discharging nanoporous supercapacitors immersed in salty and fresh water, respectively [D. Brogioli, Phys. Rev. Lett. 103, 058501 (2009)]. We show that the energy output of blue engines can be increased by a factor of order two if warm (waste-heated) fresh water is mixed with cold sea water. Moreover, the underlying physics can also be used to optimize the reverse process of capacitive desalination of water

Harvesting vibrational energy with liquid-bridged electrodes: thermodynamics in mechanically and electrically driven RC-circuits

We theoretically study a vibrating pair of parallel electrodes bridged by a (deformed) liquid droplet, which is a recently developed microfluidic device to harvest vibrational energy. The device can operate with various liquids, including liquid metals, electrolytes, as well as ionic liquids. We numerically solve the Young-Laplace equation for all droplet shapes during a vibration period, from which the time-dependent capacitance follows that serves as input for an equivalent circuit model. We first investigate two existing energy harvesters (with a constant and a vanishing bias potential), for which we explain an open issue related to their optimal electrode separations, which is as small as possible or as large as possible in the two cases, respectively. Then we propose a new engine with a time-dependent bias voltage, with which the harvested work and the power can be increased by orders of magnitude at low vibration frequencies and by factors 2-5 at high frequencies, where frequencies are to be compared to the inverse RC-time of the circuit.Comment: 9 pages, 6 figure

The Political Economy of Agricultural Transition

International Development,