Migration and Long-Distance Commuting Histories and Their Links to Career Achievement in Germany: A Sequence Analysis

Moving and travelling extensively for job reasons is often seen as a way to achieve a successful career. Yet, evidence based on longitudinal data is limited. In this paper, we use a sequence analysis to study typical histories of intensive forms of work-related spatial mobility, i.e. migration, daily and weekly long-distance commuting and overnight business travel (called below ‘high mobility’), and their links to career achievement. Using retrospective survey data from Germany, we show that a variety of high mobility histories coexist. While migrations occur mainly in the first years of the professional life, the chances of experiencing long-distance daily or weekly commuting and frequent overnight business trips remain stable over the career. Some evidence was found that long-lasting high mobility is associated with better incomes. Nevertheless, having repeated experiences of high mobility has no positive impact, per se, on managerial responsibilities or socio-economic status. These findings suggest that high mobility has become a ‘usual’ feature in many job careers and is often a way of combining a distant job with a local attachment to a place, home or community, rather than a way of achieving upward career mobility. This study points out that, besides migration, long-distance commuting and frequent travel for job reasons should receive more attention in longitudinal research on spatial mobility.

Two-Phase Refrigerant Maldistribution in the Vertical Header and its Effect on the Heat Exchanger Performance as Evaporator in Heat Pump Mode

The vertical header is a usual feature of outdoor heat exchanger of the residential air-conditioning system, typically a multipass microchannel heat exchanger. When operating in heat pump mode, it functions as an evaporator. In such a system, refrigerant maldistribution in the header can deteriorate the performance of the heat exchanger. The objective of study in this paper is the adiabatic upward flow of the refrigerant in the second pass vertical header of microchannel heat exchanger and its effect on distribution. R410A is circulated into the header through the microchannel tubes (5 or 10 tubes) in the bottom pass and exits through tubes (5 or 10 tubes) in the top pass. Three circular headers were explored, each with the microchannel tubes inserted to half depth. The best distribution is found at high flow rate and low quality. The distribution is affected by the flow patterns in the header as well as axial momentum. A distribution correlation, obtained based on the flow rate measurement in each tube, was then incorporated with a microchannel heat exchanger model. The simulation results quantified the capacity reduction of the 2-pass microchannel condenser due to the refrigerant maldistribution.

The Paradoxical Nature of State Making: The Violent Creation of Order

The central argument of this paper is developed as a criticism of a widely accepted interpretation of collective violence in new states. It is shown that instead of indicating political decay, violence in these states is an integral part of the process of accumulation of power by the national state. To the degree that this power accumulation is necessary for the imposition or maintenance of order, collective violence also indicates movement towards political order on a new scale. Admittedly, our evidence is far from definitive. Nevertheless, it consistently contradicts the interpretation of violence as political decay and supports our interpretation of violence as a usual feature of the process of primitive accumulation of power.

The Pěriya purāṇam frieze at Tārācuram: episodes in the lives of the Tamil śaiva saints

The sculptured frieze that forms the subject of this paper is carved on the main shrine of the Śiva temple at Tārācuram, 5 km. south of Kumpakonam, a provincial town in Thanjavur District, Tamilnadu. Narrative friezes of the great Indian epics are a quite usual feature of Hindu architectural ornament both in India and beyond. It is also the case that individual Tamil Śaiva saints, to whom the collective name in Tamil, Nāyaṉmār, sing. nāyaṉār, is applied, appear commonly in iconography in temples of the Tamil-speaking area. But the frieze at Tārācuram is exceptional in being a portrayal of the complete set of the 63 Nāyaṉmār as they figure in that closely-related group of Tamil medieval texts of which the most important is Cekkiḻār's Pěriya purāṇam. Indeed, as will be shown, it is difficult to avoid the conclusion that the Tārācuram frieze is virtually a set of illustrations to that work, and that the one would tend to confirm the date assumed for the other. Moreover, the various anomalies in Pěriya purānam, such as the total omission of Māṇikkavācakar and the reversing of the logical order of events in the case of Nāyaṉār 51 (N51), Kaḻaṟciṅka nāyaṉār and N54, Pukaḻttuṇai nāyaṉār, are precisely mirrored in the Tārācuram frieze.

Simultaneous determination of blood volume with Cr51 and T-1824 during hypothermia and rewarming

Dogs lightly anesthetized with ether, maintained between 23–24°C for 2 hours and rewarmed, were subjected to simultaneous determinations of red cell volume (Cr51) and plasma volume (T-1824). Red cell volume values were unchanged during the course of the experiment. Plasma volumes were significantly decreased during hypothermia and were transiently elevated during rewarming. Twenty-four hours after rewarming, total blood volume and plasma volume values were not significantly different from control values. It would seem that circulatory failure (‘rewarming shock’) is not a usual feature of rewarming following hypothermia of 2 hours duration.