Trends in Marital Dissolution by Women's Education in the United States

I use the Survey of Income and Program Participation (N = 16,452) to measure trends in marital dissolution rates for U.S. women by education level. In marriage cohorts from the mid-1970s to the 1990s, marital dissolution rates fell among women with a 4-year college degree or more, but remained high among women with less than a 4-year college degree. This diverging trend began in the mid-1970s and is not explained by recent increases in women's overall educational attainment, nor by recent increases in age at marriage timing and premarital childbearing. These results suggest a growing association between socioeconomic disadvantage and family instability.education, family demography, marital dissolution, social inequality

Commensurate Nb2Zr5O15: Accessible Within the Field Nb2ZrxO2x+5 After All

Doped niobium zirconium oxides are applied in field-effect transistors and as special-purpose coatings. Whereas their material properties are sufficiently known, their crystal structures remain widely uncharacterized. Herein, we report on the comparably mild sol–gel synthesis of Nb2Zr5O15 and the elucidation of its commensurately modulated structure via neutron diffraction. We describe the structure using the most appropriate superspace as well as the convenient supercell approach. It is part of an α-PbO2-homeotypic field with the formula Nb2ZrxO2x+5, which has previously been reported only for x ≥ 5.1, and is closely related to the structure of Hf3Ta2O11. The results, supported by X-ray diffraction and additional synthesis experiments, are contextualized within the existing literature. Via the sol–gel route, metastable Nb–Zr–O compounds and their heavier congeners are accessible that shed light on possible structures of these commercially utilized materials.DFG, 198634447, SPP 1613: Regenerativ erzeugte Brennstoffe durch lichtgetriebene Wasserspaltung: Aufklärung der Elementarprozesse und Umsetzungsperspektiven auf technologische KonzepteTU Berlin, Open-Access-Mittel - 201

Characteristics and Performance of New Firms and Spinoffs in Sweden

We analyze the rate of formation, the characteristics, and the performance of different types of new firms in Sweden over a decade. Comparisons to Denmark, Brazil, and the U.S. suggest that the environment for new firm formation in Sweden is not markedly different than elsewhere. In line with previous studies, spinoffs of incumbents perform better than other types of new firms, particularly if their parent firm continues to operate. A novel findings is that the rate of employment growth of spinoffs is greater the larger the size of their parent, which contrast sharply with findings for firms with a single owner.Sweden; spinoffs; new firm formation; entrepreneurship; performance; employment growth

Practical application of pseudospectral optimization to robot path planning

To obtain minimum time or minimum energy trajectories for robots it is necessary to employ planning methods which adequately consider the platform’s dynamic properties. A variety of sampling, graph-based or local receding-horizon optimisation methods have previously been proposed. These typically use simplified kino-dynamic models to avoid the significant computational burden of solving this problem in a high dimensional state-space. In this paper we investigate solutions from the class of pseudospectral optimisation methods which have grown in favour amongst the optimal control community in recent years. These methods have high computational efficiency and rapid convergence properties. We present a practical application of such an approach to the robot path planning problem to provide a trajectory considering the robot’s dynamic properties. We extend the existing literature by augmenting the path constraints with sensed obstacles rather than predefined analytical functions to enable real world application

The Sharp Log-Sobolev Inequality on a Compact Interval

We provide a proof of the sharp log-Sobolev inequality on a compact interval

Report on Scottish council elections 2012

This report to the Electoral Commission covers the Scottish council elections of May 2012. It considers aspects of the administration of the elections, turnout, patterns of candidature and party support and control of councils

Foreign Currency Loans - Demand or Supply Driven?

Motivated by concerns over foreign currency exposures of banks in Emerging Europe, we examine the currency denomination of business loans made in Bulgaria during the period 2003-2007. We analyze a unique dataset including information on the requested and granted currency for more than hundred thousand loans granted by one bank to sixty thousand different firms. This data set allows us to disentangle demand-side from supply-side determinants of foreign currency loans. We find that 32% of the foreign currency loans disbursed in our sample were actually requested in local currency by the firm. Our analysis suggests that the bank lends in foreign currency, not only to less risky firms, but also when the firm requests a long-term loan and when the bank itself has more funding in euro. These results imply that foreign currency borrowing in Eastern Europe is not only driven by borrowers who try to benefit from lower interest rates but also by banks hesitant to lend longterm in local currency and eager to match the currency structure of their assets and liabilities.foreign currency debt, banking

Studies on the use of sulfites to control shrimp melanosis (Blackspot) (Presented at the 11th Annual Meeting of the Tropical and Subtropical Fisheries Technological Conference of the Americas, January 14, 1986, Tampa, Florida)

Shrimp melanosis, commonly known as 'blackspot' is a harmless but objectionable surface dicoloration caused by polyphenoloxidase enzyme systems which remain active during refrigeration or ice storage. In the early 1950's sulfiting agents, particularily sodium bisulfite was first introduced to prevent or inhibit melanosis, thus yielding a more valuable harvest (1). Such use of sulfites was 'prior sanctioned1 by the U.S. Food and Drug Administration (FDA) in 1956 (2). More recent FDA decisions reaffirmed this practice, (3) but continuing regulatory scrutiny could restrict or eliminate the application of sulfite on shrimp. The regulatory action is prompted by an increasing concern for adverse 'allergic' reactions most common amongst hyper-(sulfite) sensitive asthmatics. Thus work was initiated to find alternatives to replace or reduce the amount of sulfites required to inhibit shrimp melanosis. This work would screen for possible alternatives which would require subsequent verification with field tests and statistical evaluations. (21pp.