title: Sheets of large superhydrophobic metal particles self assembled on water by the Cheerios effect

authors: Larmour, Iain A.

subjects: hydrophobic effect

abstract: Surface tension in water gives rise to a variety of phenomena some of which, such as the rise of water inside hydrophilic tubes under capillary action or the ability of pond skaters to walk on the surface of water, are so familiar that they seldom excite comment. However, there is still potential for new insights and discoveries to be made in this area. Two recent examples are the discovery that liquid marbles can be prepared by coating solvent droplets with powder and the elucidation of a general mechanism for the attraction of buoyant objects in liquids, the  Cheerios effect . Here we report a method for preparing large (up to 0.4 mm diameter) superhydrophobic copper particles and show that these particles, which have extraordinarily large contact angles but are much denser than water, give rise to a range of striking effects, including the ability to self assemble into sheets which can support objects that normally sink in water.

text: Sheets of large superhydrophobic metal particles self assembled on water by the Cheerios effect Surface tension in water gives rise to a variety of phenomena some of which, such as the rise of water inside hydrophilic tubes under capillary action or the ability of pond skaters to walk on the surface of water, are so familiar that they seldom excite comment. However, there is still potential for new insights and discoveries to be made in this area. Two recent examples are the discovery that liquid marbles can be prepared by coating solvent droplets with powder and the elucidation of a general mechanism for the attraction of buoyant objects in liquids, the  Cheerios effect . Here we report a method for preparing large (up to 0.4 mm diameter) superhydrophobic copper particles and show that these particles, which have extraordinarily large contact angles but are much denser than water, give rise to a range of striking effects, including the ability to self assemble into sheets which can support objects that normally sink in water.

year: 2008

title: Path dependence or convergence? The evolution of corporate ownership around the world

authors: Yeh, Andrew Jia-Yuh

subjects: corporate governance

abstract: We offer a theory that sheds light on the current debate over whether the form of corporate ownership converges to the Berle-Means image. Our analytical results are threefold. First, legal rules and firm-specific protective arrangements are complementary. Secondly, corporate ownership patterns can be convergent or path dependent depending on the relative importance of these protective arrangements. We predict, for example, diffuse stock ownership in countries that impose legal limits on blockholders’ power to expropriate minority investor rights. Thirdly, we find that convergence toward diffuse share ownership is a movement towards the social optimum. Our empirical results suggest a case for the co-existence of path dependence and functional convergence (convergence to the diffuse form of share ownership through cross-listings on U.S. stock exchanges that impose more stringent disclosure and listing requirements). These results have implications for the design of executive compensation, the case for institutional investor activism and the proposal to increase shareholder power.

text: Path dependence or convergence? The evolution of corporate ownership around the world We offer a theory that sheds light on the current debate over whether the form of corporate ownership converges to the Berle-Means image. Our analytical results are threefold. First, legal rules and firm-specific protective arrangements are complementary. Secondly, corporate ownership patterns can be convergent or path dependent depending on the relative importance of these protective arrangements. We predict, for example, diffuse stock ownership in countries that impose legal limits on blockholders’ power to expropriate minority investor rights. Thirdly, we find that convergence toward diffuse share ownership is a movement towards the social optimum. Our empirical results suggest a case for the co-existence of path dependence and functional convergence (convergence to the diffuse form of share ownership through cross-listings on U.S. stock exchanges that impose more stringent disclosure and listing requirements). These results have implications for the design of executive compensation, the case for institutional investor activism and the proposal to increase shareholder power.

year: 2006-05

title: Moehewa: Death, lifestyle & sexuality in the Maori World

authors: Nikora, Linda Waimarie

abstract: Customary death ritual and traditional practice have continued for the Māori (indigenous) people of Aotearoa/New Zealand, despite intensive missionary incursion and the colonial process. This paper critically considers what occurs when the deceased is different, in a most significant way. What happens when you die – and you are Māori and any one, or a combination, of the following: a queen, takatāpui,[1] butch, like that, gay, she-male, lesbian, transsexual, a dyke, intersex, tomboy, kamp, drag, homosexual, or just queer? Who remembers you and how? Same sex relationships today are still discouraged or denied, although traditional chant and Māori visual narratives record such liaisons and erotic experience as joyously normal (Te Awekotuku, 2005). And yet some people choose to remain in the closet. In this paper, we present three case studies, and invite the reader to reflect with us on mourning rituals or tangi – Māori death rites, in a same sex relationship, or for a gay, lesbian or transsexual family member. In this way, we open up a space for dialogue about such matters in our intimate and kin communities.

text: Moehewa: Death, lifestyle & sexuality in the Maori World Customary death ritual and traditional practice have continued for the Māori (indigenous) people of Aotearoa/New Zealand, despite intensive missionary incursion and the colonial process. This paper critically considers what occurs when the deceased is different, in a most significant way. What happens when you die – and you are Māori and any one, or a combination, of the following: a queen, takatāpui,[1] butch, like that, gay, she-male, lesbian, transsexual, a dyke, intersex, tomboy, kamp, drag, homosexual, or just queer? Who remembers you and how? Same sex relationships today are still discouraged or denied, although traditional chant and Māori visual narratives record such liaisons and erotic experience as joyously normal (Te Awekotuku, 2005). And yet some people choose to remain in the closet. In this paper, we present three case studies, and invite the reader to reflect with us on mourning rituals or tangi – Māori death rites, in a same sex relationship, or for a gay, lesbian or transsexual family member. In this way, we open up a space for dialogue about such matters in our intimate and kin communities.

year: 2016