Gauging internal fermionic symmetries and spin 3/2 fields

Field theoretic models possessing a global internal fermionic shift symmetry are considered. When such a symmetry is realized locally, spin 3/2 fields appear naturally as gauge fields. Implementation of the gauging procedure requires not only the usual replacement of ordinary derivatives by covariant derivatives containing the spin 3/2 fields, but also the inclusion of additional monomials. The Higgs mechanism and the high energy Nambu-Goldstone fermion equivalence theorem are explicitly demonstrated.Comment: 9 page

Vehicles Recognition Using Fuzzy Descriptors of Image Segments

In this paper a vision-based vehicles recognition method is presented. Proposed method uses fuzzy description of image segments for automatic recognition of vehicles recorded in image data. The description takes into account selected geometrical properties and shape coefficients determined for segments of reference image (vehicle model). The proposed method was implemented using reasoning system with fuzzy rules. A vehicles recognition algorithm was developed based on the fuzzy rules describing shape and arrangement of the image segments that correspond to visible parts of a vehicle. An extension of the algorithm with set of fuzzy rules defined for different reference images (and various vehicle shapes) enables vehicles classification in traffic scenes. The devised method is suitable for application in video sensors for road traffic control and surveillance systems.Comment: The final publication is available at http://www.springerlink.co

Wightman Functions' Behaviour on the Event Horizon of an Extremal Reissner-Nordstr\"om Black Hole

A weaker Haag, Narnhofer and Stein prescription as well as a weaker Hessling Quantum Equivalence Principle for the behaviour of thermal Wightman functions on an event horizon are analysed in the case of an extremal Reissner-Nordstr\"{o}m black hole in the limit of a large mass. In order to avoid the degeneracy of the metric in the stationary coordinates on the horizon, a method is introduced which employs the invariant length of geodesics which pass the horizon. First the method is checked for a massless scalar field on the event horizon of the Rindler wedge, extending the original procedure of Haag, Narnhofer and Stein onto the {\em whole horizon} and recovering the same results found by Hessling. Afterwards the HNS prescription and Hessling's prescription for a massless scalar field are analysed on the whole horizon of an extremal Reissner-Nordstr\"{o}m black hole in the limit of a large mass. It is proved that the weak form of the HNS prescription is satisfyed for all the finite values of the temperature of the KMS states, i.e., this principle does not determine any Hawking temperature. It is found that the Reissner-Nordstr\"{o}m vacuum, i.e., $T=0$ does satisfy the weak HNS prescription and it is the only state which satisfies weak Hessling's prescription, too. Finally, it is suggested that all the previously obtained results should be valid dropping the requirements of a massless field and of a large mass black hole.Comment: 27 pages, standard LaTex, no figures, final version containing the results following from Hessling's principle as they appeared in the other paper gr-qc/9510016, minor changes in the text and in references, it will appear on Class. Quant. Gra

There are No Causality Problems for Fermi's Two Atom System

A repeatedly discussed gedanken experiment, proposed by Fermi to check Einstein causality, is reconsidered. It is shown that, contrary to a recent statement made by Hegerfeldt, there appears no causality paradoxon in a proper theoretical description of the experiment.Comment: 6 pages, latex, DESY 94-02

Interaction of Hemispheric Brain Dominance and Treatment Type on Lowering the Frontalis Muscle Tension in College Students

It was hypothesized that a combination of imagery and biofeedback would be more effective in reducing frontalis muscle tension than either imagery or biofeedback alone. Also, because spatial and artistic abilities are often attributed to right-brain strategies, it was hypothesized that subjects who use a right-brained cognitive style would be more successful using guided imagery than subjects who use a left-brained cognitive style. Subjects were 12 college students, six right-brained and six left-brained as determined by a hemispheric strategy questionnaire. Each subject received imagery, biofeedback or both for 6 nonconsecutive days

Effects of response-independent stimulus delivery and functional communication training

Two individuals with developmental delays with a history of problem behavior participated in this study. Its purpose was to examine the efficacy of combining two treatments demonstrated to reduce problem behavior: response-independent stimulus delivery and differential reinforcement of an alternative behavior. This study examined whether the response-independent delivery of an alternative preferred stimulus and differential reinforcement of manding resulted in increases in manding and suppression of problem behavior prior to and during the fading of the schedule of response-independent stimulus delivery. The study also examined the necessity of extinction to obtain suppression of problem behavior. The response-independent delivery of an alternative preferred stimulus and the implementation of functional communication training resulting in access to the maintaining reinforcer increased manding and decreased problem behavior. Results also suggest tentatively that extinction may be necessary to maintain response suppression during fading of the response-independent stimulus delivery schedule

Establishing control of stereotypy by an antecedent stimulus using punishment

Few studies have demonstrated conclusively that the use of punishment in the presence of an antecedent stimulus can bring responding under control of that stimulus. The purpose of this study was to determine stereotypy could be controlled by antecedent stimuli due to a differential history of punishment, and, if so, whether participants would then request the stimulus correlated with nonpunishment. Three adults with mental retardation participated. In Experiment 1, analog functional analyses were conducted to develop hypotheses about the effects of environmental variables on participants\u27 repetitive behaviors. Results of Experiment 1 suggested that the responding of all participants likely was sensory maintained. The purpose of Experiment 2 was to determine whether responding could be brought under antecedent stimulus control using punishment. Obtained results suggest that stimulus control was achieved with all participants. The purpose of Experiment 3 was to determine whether participants would acquire a response maintained by access to the stimulus conditions correlated with nonpunishment, and if a practical intervention for stereotypy then could be developed. Results suggest that for two of three participants, such a mand was acquired and for all participants, practical interventions using stimulus control and mand training were developed. Overall, results obtained in this study contribute to the literature by demonstrating that it is possible to obtain antecedent stimulus control using punishment. The results have implications for the development of antecedent interventions for stereotypy, as it may be possible to control responding such that it occurs only in situations where it is appropriate (e.g., when the individual is alone)

Satellite battery testing status

Because of the large numbers of satellite cells currently being tested and anticipated at the Naval Weapons Support Center (NAVWPNSUPPCEN) Crane, Indiana, satellite cell testing is being integrated into the Battery Test Automation Project (BTAP). The BTAP, designed to meet the growing needs for battery testing at the NAVWPNSUPPCEN Crane, will consist of several Automated Test Stations (ATSs) which monitor batteries under test. Each ATS will interface with an Automation Network Controller (ANC) which will collect test data for reduction

Nickel hydrogen low Earth orbit test program update and status

The current status of nickel-hydrogen (NiH2) testing ongong at NWSC, Crane In, and The Aerospace Corporation, El Segundo, Ca are described. The objective of this testing is to develop a database for NiH2 battery use in Low Earth Orbit (LEO) and support applications in Medium Altitude Orbit (MAO). Individual pressure vessel-type cells are being tested. A minimum of 200 cells (3.5 in diameter and 4.5 in diameter) are included in the test, from four U.S. vendors. As of this date (Nov. 18, 1986) approximately 60 cells have completed preliminary testing (acceptance, characterization, and environmental testing) and have gone into life cycling