NEIGHBORHOOD DEVELOPMENT IN THE METROPOLITAN ECONOMY: A Policy Review

ABSTRACT: This article introduces policymakers and scholars to several issues in the development of city neighborhoods and their residents. It constructs a literature review around a tree diagram of problems and solutions, arguing that this is a more useful way to organize information than the social science questions that typically interest academics. Following this structured overview, I make the following arguments about space and scale in neighborhood policy: (1) Even if we adopt an individualistic model of economic behavior, we do not necessarily need to choose “people” over “place.” (2) The rationale for the development of neighborhood export jobs remains weak. However, we may be able to identify a “preferred policy scale” for job development and placement connections. This is defined as the scale at which the problem of spatial mismatch is not solved at the expense of broader economic development considerations, and vice versa. The research agenda underlying this simple idea would require more sophisticated and policy-relevant work on commuting patterns and on the interaction behavior and other competitive advantages of firms situated in intra-metropolitan space.     

实现家庭健康照护

DSP以及加速度计这类型的组件使得对心脏、肺脏与其它更多的家庭监测功能化为可能。 复杂的半导体技术正在为尺寸日益缩小而且功能更加强大的家用医疗装置的开发而铺路。对于病患而言,更小巧的便携设备的优点就是更易于进行照护、     

Laboratory and Pilot Scale Recovery of Protein from Mechanically Separated Chicken Residue

Bone residue resulting from mechanical deboning of chicken backs and necks was subjected to alkali extraction followed by acid precipstation to recover food grade protein. A laboratory study of effects of varying die size in the grinding of the starting material, of extraction temperature, and of g-force during centrifugation on composition of process fractions was conducted. Grinding increased ash content, higher temperature reduced fat content, and increasing centrifugal force decreased ash content, of the final products. Effects of grinding, extraction temperature, and centrifugal type were also studied on a pilot scale. Final protein product yield was higher at a 22°C than at a 3–7°C extraction temperature, and less fat was incorporated using a basket centrifuge than with a horizontal decanter centrifuge.     

Tensor Product Production System: a Modular Architecture and Representation

Can connectionist networks effectively represent and process structure? A technique called ‘tensor product representations’, which formalizes and generalizes the approaches of several previous connectionist models, was developed by Smolensky and shown to possess a number of desirable general properties. This paper shows how the technique can be effectively used to design a specific symbol-processing task: the serial execution of simple production rules requiring pattern matching, variable binding and structure manipulation. This ‘Tensor Product Production System’ is applied to one of the classes of production rules in Touretzky and Hinton's Distributed Connectionist Production System, and a number of comparisons are made between the two approaches. The mathematical simplicity and analyzability of the tensor product scheme allows the straightforward design of a simpler, more principled, and in some ways more efficient system.