Reclaiming Self-Determination: A Call for Intraracial Adoption

The wholesale marketing of Black children to suit the economic interests of others was one of the cruelest aspects of slavery. Sons and daughters who were traded away from their parents would later struggle in vain to remember their families, their customs, and their countries of origin. Even the extended families which evolved in the transient slave communities were continually fragmented as children and their caretakers were merchanted to different plantations according to the whims of White slavemasters. 1 Although due to quite different circumstances, today the Black community continues to lose its children. At present, government sponsored entities, 2 overlooking the potentially harmful consequences of transracial adoption, 3 remove Black children from their communities through transracial adoption with Whites who are unable to secure children of their own race. 4 Part I of this Note provides an overview of transracial adoption legislation leading up to the Multiethnic Placement Act (MPA) of 1994 and critiques the Act. Part II considers the effects of the transracial placement of Black children. This section focuses on the survival skills Black transracial adoptees would or would not acquire in a White home and the effect such an adoption may have on their racial identities and sense of community. Part III examines the current state of the law regarding the transracial adoption of Native American children. This section concludes that Black children should be accorded similar treatment, and moreover, that Black parents should be encouraged to adopt thereby diminishing the lengthy wait faced by adoptees ..

Force reflecting hand controller

A universal input device for interfacing a human operator with a slave machine such as a robot or the like includes a plurality of serially connected mechanical links extending from a base. A handgrip is connected to the mechanical links distal from the base such that a human operator may grasp the handgrip and control the position thereof relative to the base through the mechanical links. A plurality of rotary joints is arranged to connect the mechanical links together to provide at least three translational degrees of freedom and at least three rotational degrees of freedom of motion of the handgrip relative to the base. A cable and pulley assembly for each joint is connected to a corresponding motor for transmitting forces from the slave machine to the handgrip to provide kinesthetic feedback to the operator and for producing control signals that may be transmitted from the handgrip to the slave machine. The device gives excellent kinesthetic feedback, high-fidelity force/torque feedback, a kinematically simple structure, mechanically decoupled motion in all six degrees of freedom, and zero backlash. The device also has a much larger work envelope, greater stiffness and responsiveness, smaller stowage volume, and better overlap of the human operator's range of motion than previous designs

The most rapidly rotating He-strong emission line star: HR7355

Using archival spectroscopic and photometric data, we searched for massive stars with Balmer-emission consistent with magnetically confined circumstellar material. HR 7355 is a formerly unknown He-strong star showing Balmer emission. At V=6.02 mag, it is one of the brightest objects simultaneously showing anomalous helium absorption and hydrogen emission. Among similar objects, only sigma Ori E has so far been subjected to any systematic analysis of the circumstellar material responsible for the emission. We argue that the double-wave photometric period of 0.52d corresponds to the rotation period. In tandem with the high projected equatorial velocity, v sin i=320 km/s, this short period suggests that HR 7355 is the most rapidly rotating He-strong star known to date; a class that was hitherto expected to host stars with slow to moderate rotation only.Comment: 4 pages with 2 figures. Accepted for publication as Research Note by Astronomy and Astrophysic

Faithful qubit distribution assisted by one additional qubit against collective noise

We propose a distribution scheme of polarization states of a single photon over collective-noise channel. By adding one extra photon with a fixed polarization, we can protect the state against collective noise via a parity-check measurement and post-selection. While the scheme succeeds only probabilistically, it is simpler and more flexible than the schemes utilizing decoherence-free subspace. An application to BB84 protocol through collective noise channel, which is robust to the Trojan horse attack, is also given.Comment: 4 pages, 3 figures; published version in Phys. Rev. Let