TM digital image products for applications

Computer compatible tapes (CCTs) of LANDSAT 4 thematic mapper (TM) digital image products are compared and reviewed. The following tape formats are discussed: (1) raw band-sequential data (CCT-BT); (2) calibrated data (CCT-AT); and (3) geometrically resampled data (CCT-PT). Each format represents different steps in the process of producing fully corrected TM data. The CCT-BT images are uncorrected radiometrically or geometrically, CCT-AT data are radiometrically calibrated, and CCT-PT images are both radiometrically and geometrically corrected

TM digital image products for applications

The image characteristics of digital data generated by LANDSAT 4 thematic mapper (TM) are discussed. Digital data from the TM resides in tape files at various stages of image processing. Within each image data file, the image lines are blocked by a factor of either 5 for a computer compatible tape CCT-BT, or 4 for a CCT-AT and CCT-PT; in each format, the image file has a different format. Nominal geometric corrections which provide proper geodetic relationships between different parts of the image are available only for the CCT-PT. It is concluded that detector 3 of band 5 on the TM does not respond; this channel of data needs replacement. The empty bin phenomenon in CCT-AT images results from integer truncations of mixed-mode arithmetric operations

Evaluation of LANDSAT MSS vs TM simulated data for distinguishing hydrothermal alteration

The LANDSAT Follow-On (LFO) data was simulated to demonstrate the mineral exploration capability of this system for segregating different types of hydrothermal alteration and to compare this capability with that of the existing LANDSAT system. Multispectral data were acquired for several test sites with the Bendix 24-channel MSDS scanner. Contrast enhancements, band ratioing, and principal component transformations were used to process the simulated LFO data for analysis. For Red Mountain, Arizona, the LFO data allowed identification of silicified areas, not identifiable with LANDSAT 1 and 2 data. The improved LFO resolution allowed detection of small silicic outcrops and of a narrow silicified dike. For Cuprite - Ralston, Nevada, the LFO spectral bands allowed discrimination of argillic and opalized altered areas; these could not be spectrally discriminated using LANDSAT 1 and 2 data. Addition of data from the 1.3- and 2.2- micrometer regions allowed better discriminations of hydrothermal alteration types

Tunable Oscillations in the Purkinje Neuron

In this paper, we study the dynamics of slow oscillations in Purkinje neurons in vitro, and derive a strong association with a forced parametric oscillator model. We demonstrate the precise rhythmicity of the oscillations in Purkinje neurons, as well as a dynamic tunability of this oscillation using a photo-switchable compound. We show that this slow oscillation can be induced in every Purkinje neuron, having periods ranging between 10-25 seconds. Starting from a Hodgkin-Huxley model, we also demonstrate that this oscillation can be externally modulated, and that the neurons will return to their intrinsic firing frequency after the forced oscillation is concluded. These results signify an additional functional role of tunable oscillations within the cerebellum, as well as a dynamic control of a time scale in the brain in the range of seconds.Comment: 12 pages, 5 figure

Children’s attitudes toward older people: current and future directions

The children of today will be the adults of tomorrow and thus their attitudes toward older people lay the ground for their future self-concept and psychological well-being. Understanding how young children perceive older people is thus of crucial importance in an ageing world. The literature suggests mixed findings regarding the existence of ageism among children, which may be an artifact of the diversity measures used. This chapter presents a literature review that assesses most of these measures to assess children’s attitudes regarding older people and the assorted findings. We propose a classification based on two criteria: (i) the dimensions covered – cognitive, affective and behavioral (tripartite model of attitudes) and (ii) the four automaticity features (consciousness, controllability, intentionality and efficacy) which together led us to classify measures into three categories: solely explicit, solely implicit and partially both explicit and implicit measures. Based on this categorization, we delineate distinct patterns of results, associated with the participant’s age. In studies using explicit measures or a combination of both explicit and implicit measures, children revealed more positive or mixed attitudes regarding older people. The most positive attitudes were found in studies with older children and adolescents (e.g. using the Tuckman-Lorge Older People Scale”). When implicit measures were used, a different pattern of results emerged. Children expressed negative attitudes toward older people across childhood (e.g. behavioral measure). Based on this pattern of evidence, we make recommendations regarding the improvement of measures to assess children’s attitudes toward older people at different points in their social development.info:eu-repo/semantics/publishedVersio

Is moral elevation an approach-oriented emotion?

Two studies were designed to test whether moral elevation should be conceptualized as an approach-oriented emotion. The studies examined the relationship between moral elevation and the behavioral activation and inhibition systems. Study 1 (N = 80) showed that individual differences in moral elevation were associated with individual differences in behavioral activation but not inhibition. Study 2 (N = 78) showed that an elevation-inducing video promoted equally high levels of approach orientation as an anger-inducing video and significantly higher levels of approach orientation than a control video. Furthermore, the elevation-inducing stimulus (vs. the control condition) significantly promoted prosocial motivation and this effect was sequentially mediated by feelings of moral elevation followed by an approach-oriented state. Overall the results show unambiguous support for the proposal that moral elevation is an approach-oriented emotion. Applied and theoretical implications are discussed

Testing the prosocial effectiveness of the prototypical moral emotions: Elevation increases benevolent behaviors and outrage increases justice behaviors

How can we overcome apathy and instigate a desire to help others? This research tests and compares the prosocial effects of two of the most prototypical emotions on a range of prosocial intentions and behaviors. Emotion-inducing videos were used to instigate states of moral elevation (felt when witnessing a moral virtue) and/or moral outrage (felt when witnessing a moral transgression). Although elevation and outrage are derived from opposing appraisals, separate strands of research show that they both instigate a desire to help others. The current research tests the appraisal tendency framework to explore whether elevation and outrage increase prosociality across moral domains or whether their prosocial effects are domain specific. Results of Experiment 1 showed that elevation, but not outrage, increased donations to charity (i.e., benevolence domain). Experiment 2 showed that outrage, but not elevation, increased prosocial political action intentions (i.e., justice domain). Experiment 3 showed that outrage, but not elevation, increased compensation in a third-party bystander game (i.e., justice domain). This research shows that although elevation and outrage both inspire a desire to help others, they affect distinct types of prosocial behaviors, offering support for the appraisal tendency framework. Applied and theoretical implications are discussed

The arts as a catalyst for human prosociality and cooperation

We tested the hypothesis that engagement in the arts may act as a catalyst that promotes prosocial cooperation. Using “Understanding Society” data (a nationally representative longitudinal sample of 30,476 people in the UK), we find that beyond major personality traits, demographic variables, wealth, education, and engagement in other social activity (sports), people’s greater engagement with the arts predicts greater prosociality (volunteering and charitable giving) over a period of 2 years. The predictive effect of prosociality on subsequent arts engagement is significantly weaker. The evidence is consistent with the hypothesis that the arts provide an important vehicle for facilitating a cohesive and sustainable society. Fostering a society in which engagement in the arts is encouraged and accessible to all may provide an important counter to economic, cultural, and political fracture and division

Radiometric calibration and processing procedure for reflective bands on LANDSAT-4 protoflight Thematic Mapper

The radiometric subsystem of NASA's LANDSAT-4 Thematic Mapper (TM) sensor is described. Special emphasis is placed on the internal calibrator (IC) pulse shapes and timing cycle. The procedures for the absolute radiometric calibration of the TM channels with a 122-centimeter integrating sphere and the transfer of radiometric calibration from the channels to the IC are reviewed. The use of the IC to calibrate TM data in the ground processing system consists of pulse integration, pulse averaging, IC state identification, linear regression analysis, and histogram equalization. An overview of the SCROUNGE-era (before August 1983) method is presented. Procedural differences between SCROUNGE and the TIPS-era (after July 1983) and the implications of these differences are discussed