Suchergebnisse

This paper documents research and development (R7amp;D) spillovers between nations and between industries, discussing some theoretical and measurement issues. A new technique makes patent data more practical for economic uses, allowing analysis of the industries of manufacture and sectors of use for inventions. New technology introduced for use in the agricultural and food processing sectors in 14 less developed and newly industrialized nations is traced, comparing the regional and industrial sources of these inventions across time. An application shows that both international and interindustrial spillovers add to agricultural total factor productivity, and distinguishes between the direct and indirect effects of spillovers from public and private, domestic and foreign sources. (JEL C67, 031, 047, Q16)

Subjective intergroup beliefs and authoritarianism were assessed in a field study (N = 255) of White Australians' anti-Asian stereotyping and prejudice. A social identity analysis of intergroup prejudice was adopted, such that perceptions of the intergroup structure (instability, permeability, legitimacy and higher ingroup status) were proposed as predictors of higher prejudice (blatant and covert) and less favorable stereotyping. Consistent with the social identity approach, both independent and interacting roles for sociostructural predictors of Anti-Asian bias were observed, even after demographic and personality variables were controlled. For example, perceived legitimacy was associated with higher prejudice when White Australians' status position relative to Asian Australians was valued. Moreover, when participants evaluated Whites' position as unstable and high status or legitimate, perceptions of permeable intergroup boundaries were associated with anti-Asian bias. The present findings demonstrate status protection responses in advantaged group members in a field setting, lending weight to the contention that perceptions of sociostructural threat interact to predict outgroup derogation. Implications for theories of intergroup relations are discussed.

· Brings together diverse, yet interrelated, areas of innovations, agricultural development, technology, and industry assessing their combined roles in developing an economy!

This paper describes the design of an extended Kalman filter to obtain the precise relative position of two aircraft in a refueling maneuver while operating in GPS-denied environments. The extended Kalman filter uses the inertial navigation system already present in both aircraft as well as the stereo camera system organic to new tanker systems. The aircraft trajectories are generated to represent an authentic refueling profile with flight dynamics software and executed in a three-dimensional virtual environment to enable deterministic simulation of the stereo camera system and to demonstrate the effectiveness of the combined system in an authentic refueling scenario. Results show the system can achieve sufficient accuracy using only stereo machine vision and inertial navigation system measurements, though the system is capable of incorporating GPS measurements when available for an additional increase in accuracy.