Satellite Data Processing System (SDPS) users manual V1.0

SDPS is a menu driven interactive program designed to facilitate the display and output of image and line-based data sets common to telemetry, modeling and remote sensing. This program can be used to display up to four separate raster images and overlay line-based data such as coastlines, ship tracks and velocity vectors. The program uses multiple windows to communicate information with the user. At any given time, the program may have up to four image display windows as well as auxiliary windows containing information about each image displayed. SDPS is not a commercial program. It does not contain complete type checking or error diagnostics which may allow the program to crash. Known anomalies will be mentioned in the appropriate section as notes or cautions. SDPS was designed to be used on Sun Microsystems Workstations running SunView1 (Sun Visual/Integrated Environment for Workstations). It was primarily designed to be used on workstations equipped with color monitors, but most of the line-based functions and several of the raster-based functions can be used with monochrome monitors. The program currently runs on Sun 3 series workstations running Sun OS 4.0 and should port easily to Sun 4 and Sun 386 series workstations with SunView1. Users should also be familiar with UNIX, Sun workstations and the SunView window system

Factors that influence learners’ performance in grade 12 Accounting: A case study in the Northern Cape

This article explores the elements that contribute to the poor performance of grade 12 learners in Accounting. As far as Accounting as a school subject in South Africa is concerned, there is a growing concern about the underperformance of learners, due to both a decrease in learners who enrol for the subject in grade 12 and the low pass rate in the National Senior Certificate examination. Existing research points out that fewer students elect Accounting as a grade 12 subject and that the performance of these students is below the average pass rate when compared to other subjects. This article employed as research methodology a qualitative case study in which interviews were used to collect data. Based on the case study conducted in the Frances Baard District Municipality in the Northern Cape, this article identifies critical factors that contribute to the underperformance of learners in grade 12 Accounting. Addressing these factors may contribute to the improvement of the performance of learners in Accounting. This is relevant for South Africa, which is experiencing a serious shortage of chartered accountants and other financial and auditing professionals.OPSOMMINGFaktore wat die prestasie van leerders in graad 12-Rekeningkunde beïnvloed: ’n Gevallestudiein die Noord-Kaap Hierdie artikel ondersoek elemente wat bydra tot die swak prestasie van graad 12-leerders in Rekeningkunde. Wat Rekeningkunde as ’n skoolvak in Suid-Afrika betref, is daar toenemende kommer oor die onderprestasie van leerders, as gevolg van die afname in leerders wat in graad 12 vir die vak inskryf, en die lae slaagsyfer in die eksamen vir die Nasionale Senior Sertifikaat. Bestaande navorsing wys daarop dat minder leerders Rekeningkunde as graad 12-vak kies en dat die prestasie van hierdie leerders onder die gemiddelde slaagsyfer is as dit met ander vakke vergelyk word. Hierdie artikel maak van ’n kwalitatiewe gevallestudie gebruik as navorsingsmetode waarin onderhoude gebruik is om data in te samel. Op grond van die gevallestudie wat in die Frances Baard-distriksmunisipaliteit in die Noord-Kaap uitgevoer is, word ’n aantal kritiese faktore geïdentifiseer wat bydra tot die onderprestasie van leerders in graad 12-Rekeningkunde. Die aanspreek van hierdie faktore kan bydra tot die verbetering van die prestasie van leerders in Rekeningkunde. Dit is relevant vir Suid-Afrika wat ’n ernstige tekort aan geoktrooiieerde rekenmeesters en ander finansiële en ouditpersoneel ervaar. https://doi.org/10.19108/KOERS.86.1.250

The association of metacognitive beliefs with emotional distress after diagnosis of cancer.

Objective: Emotional distress after a diagnosis of cancer is normal and, for most people, will diminish over time. However, a significant minority of patients with cancer experience persistent or recurrent symptoms of emotional distress for which they need help. A model developed in mental health, the self-regulatory executive function model (S-REF), specifies that maladaptive metacognitive beliefs and processes, including persistent worry, are key to understanding why such emotional problems persist. This cross-sectional study explored, for the first, time whether metacognitive beliefs were associated with emotional distress in a cancer population, and whether this relationship was mediated by worry, as predicted by the S-REF model. Method: Two hundred twenty-nine participants within 3 months of diagnosis of, and before treatment for, primary breast or prostate cancer completed self-report questionnaires measuring anxiety, depression, posttraumatic stress disorder (PTSD) symptoms, metacognitive beliefs, worry, and illness perceptions. Results: Regression analysis showed that metacognitive beliefs were associated with symptoms of anxiety, depression, and PTSD, and explained additional variance in these outcomes after controlling for age, gender, and illness perceptions. Structural equation modeling was consistent with cross-sectional hypotheses derived from the theory that metacognitive beliefs cause and maintain distress both directly and indirectly by driving worry. Conclusions: The findings provide promising first evidence that the S-REF model may be usefully applied in cancer. Further study is required to establish the predictive and clinical utility of these findings

Practitioner Interview

Phone interview with David Ford from Ford Consulting Engineers; Chris Dunn from US Army Corps of Engineers, Hydrologic Engineering Center; and Leon Basdekas from Colorado Spring Water Utility by David Rosenberg and David Watkins, Jr. Interview questions asked inquired about (i) practitioner’s professional background, (ii) practitioner’s personal experience with systems analysis techniques and software in their job, (iii) role, benefits, and challenges in using systems analysis concepts in the water resources engineering profession, and (iv) recommendations for improving education of environmental and water resources systems analysis in universities

Feshbach Resonance Cooling of Trapped Atom Pairs

Spectroscopic studies of few-body systems at ultracold temperatures provide valuable information that often cannot be extracted in a hot environment. Considering a pair of atoms, we propose a cooling mechanism that makes use of a scattering Feshbach resonance. Application of a series of time-dependent magnetic field ramps results in the situation in which either zero, one, or two atoms remain trapped. If two atoms remain in the trap after the field ramps are completed, then they have been cooled. Application of the proposed cooling mechanism to optical traps or lattices is considered.Comment: 5 pages, 3 figures; v.2: major conceptual change

Atom-Molecule Laser Fed by Stimulated Three-Body Recombination

Using three-body recombination as the underlying process, we propose a method of coherently driving an atomic Bose-Einstein condensate (BEC) into a molecular BEC. Superradiant-like stimulation favors atom-to-molecule transitions when two atomic BECs collide at a resonant kinetic energy, the result being two molecular BEC clouds moving with well defined velocities. Potential applications include the construction of a molecule laser.Comment: 4 pgs, 3 figs, RevTeX4, submitted to PRL; Corrected numerical example