Bloomberg: Foxconn Hires Outside Managers for China Dormitories

This document is part of a digital collection provided by the Martin P. Catherwood Library, ILR School, Cornell University, pertaining to the effects of globalization on the workplace worldwide. Special emphasis is placed on labor rights, working conditions, labor market changes, and union organizing.CLW_2010_Report_China_foxconn_hires.pdf: 40 downloads, before Oct. 1, 2020

Classical stochastic measurement trajectories: Bosonic atomic gases in an optical cavity and quantum measurement backaction

We formulate computationally efficient classical stochastic measurement trajectories for a multimode quantum system under continuous observation. Specifically, we consider the nonlinear dynamics of an atomic Bose-Einstein condensate contained within an optical cavity subject to continuous monitoring of the light leaking out of the cavity. The classical trajectories encode within a classical phase-space representation a continuous quantum measurement process conditioned on a given detection record. We derive a Fokker-Planck equation for the quasi-probability distribution of the combined condensate-cavity system. We unravel the dynamics into stochastic classical trajectories that are conditioned on the quantum measurement process of the continuously monitored system, and that these trajectories faithfully represent measurement records of individual experimental runs. Since the dynamics of a continuously measured observable in a many-atom system can be closely approximated by classical dynamics, the method provides a numerically efficient and accurate approach to calculate the measurement record of a large multimode quantum system. Numerical simulations of the continuously monitored dynamics of a large atom cloud reveal considerably fluctuating phase profiles between different measurement trajectories, while ensemble averages exhibit local spatially varying phase decoherence. Individual measurement trajectories lead to spatial pattern formation and optomechanical motion that solely result from the measurement backaction. The backaction of the continuous quantum measurement process, conditioned on the detection record of the photons, spontaneously breaks the symmetry of the spatial profile of the condensate and can be tailored to selectively excite collective modes.Comment: 22 pages, 11 figure

Bloomberg: Suicides Among China Factory Workers Surge, Labor Group Says

This document is part of a digital collection provided by the Martin P. Catherwood Library, ILR School, Cornell University, pertaining to the effects of globalization on the workplace worldwide. Special emphasis is placed on labor rights, working conditions, labor market changes, and union organizing.CLW_2010_Report_China_bloomberg_suicides_among_china.pdf: 37 downloads, before Oct. 1, 2020

Multiple Aqueous Events in the Nakhlite Meteorite North West Africa (NWA)

Geological records suggest the past existence of abundant water flowing freely on Mars’ surface. Most of this aqueous activity appears to have been restricted to early Mars and although aqueous alteration by thin films of water or acid fog may still occur today, evidence suggests that liquid water has not existed at the surface for the last 3 Ga [1]. The Nakhlites, which are 1.3 Ga old Martian meteorites, contain mineralogical proof for the existence of liquid water within the shallow Martian crust duting the Amazonian [2]. To understand the nature of the water-rich fluids and conditions responsible for aqueous alteration on Mars, thorough characterization of chemical and mineralogical changes resulting from aqueous processes is essential.<p></p> The Nakhlite meteorite North West Africa (NWA) 817 was discovered in the Saharan desert (Morocco) as a single stone of 104g by meteorite hunters in 2000 [4]. In common with most other Nakhlite meteorites, NWA 817 presents mineralogical evidence of interactions with low temperature water-bearing fluids on Mars [5]. Here, we present a petrological and chemical reinvestigation of the alteration products of NWA 817. Our study reveals evidence for multiple fluid infiltrations in Mars subsurface during the Amazonian.<p></p&gt

Fluid-rock interactions in the Martian meteorite North West Africa 817

No abstract available

Secondary Minerals in the Nakhlite Meteorite Yamato 000593: Distinguishing Martian from Terrestrial Alteration Products

The nakhlites are olivine-bearing clinopyroxenites that formed in a Martian lava flow or shallow intrusion 1.3 Ga ago [1, 2]. They are scientifically extremely valuable because they interacted with water-bearing fluids on Mars [3]. Fluid-rock interactions led to the precipitation of secondary minerals, many of which are hydrous. The secondary minerals consist in a mixture of poorly crystalline smectitic material and Fe-oxide, collectively called “iddingsite”, but also carbonate and sulphate [4]. The proportion, chemistry and habit of the secondary minerals vary between members of the Nakhlite group, which is thought to reflect compositional variation of the fluid within the Martian crust [5]. However, some secondary minerals are quite similar to terrestrial alteration products and thus the chemical and textural variations could also reflect terrestrial contamination (deposition or exchange). Identifying the origin of the secondary minerals is not straightforward but essential to unravel the Martian fluid chemistry and conditions.<p></p> Yamato 000593 (Y-000593) is a nakhlite meteorite that was discovered in Antarctica near the Yamato Mountains by the Japanesse Antarctic Research Expedition in 2000-2001 [6]. Most of the meteorite is covered by a black shiny fusion crust but it also has deep erosion features in its underside that probably formed by freeze- thaw cycles. As in most other Nakhlites, Y 000593 contains iddingsite-like alteration products believed to have been formed on Mars because they have devolatilization features at the vicinity of the fusion crust [7]. Additional evidence of Martian aqueous alteration is the presence of laihunite, a high temperature oxidative alteration product of fayalitic olivine [8].<p></p> The secondary minerals in Y-000593 can provide a powerful insight into the Martian hydrosphere from high to low temperature environments with implications for the origin, cycling, and availability of water on Mars. However, it is highly likely that some secondary minerals have formed on Earth which can biased our understanding of the Martian groundwater chemistry. With this in mind, we are trying to identify all the different secondary minerals and document their spatial and textural relations, their mineralogy and chemistry to better constrain their possible origin and the impact that terrestrial fluids may have had on the Martian alteration products.<p></p&gt