RESEARCH NOTE / THE MAP AS INFORMATION CHANNEL: IGNORANCE BEFORE AND AFTER LOOKING AT A CHOROPLETH MAP

1975 ◽  
Vol 12 (1) ◽  
pp. 80-82 ◽  
Author(s):  
JOHN S PIPKIN
Keyword(s):  
Research Note ◽  
Information Channel ◽  
Before And After ◽  
Choropleth Map

An Exploratory Study of Team Cohesion before and after a Spring Trip (Research Note)

1988 ◽  
Vol 2 (4) ◽  
pp. 314-317 ◽  
Author(s):  
David W. Rainey ◽  
Gerald J. Schweickert
Keyword(s):  
Exploratory Study ◽  
Team Cohesion ◽  
Research Note ◽  
Before And After

Involvement of ON and OFF retinal channels in the eye and head horizontal optokinetic nystagmus of the frog

1989 ◽  
Vol 2 (4) ◽  
pp. 357-365 ◽  
Author(s):  
Y. H. Yücel ◽  
B. Jardon ◽  
N. Bonaventure
Keyword(s):  
Dicarboxylic Acid ◽  
Intravitreal Injection ◽  
Optokinetic Nystagmus ◽  
Specific Role ◽  
Slow Phase ◽  
Information Channel ◽  
Before And After ◽  
Information Channels ◽  
Retinal Information

AbstractThe specific role of ON and OFF retinal information channels in the generation of the horizontal optokinetic nystagmus (OKN) of the frog was studied. Coil recordings of monocular eye and head OKN were obtained before and after intravitreal injection of two drugs that block either ON or OFF channels. The intravitreal injection of 2-amino-4-phosphonobutyrate (APB), a glutamate analog that selectively blocks the ON retinal channel, strongly reduced or even cancelled the monocular OKN of the head and of the eye. The intravitreal injection of another glutamate analog, the cis-2, 3-piperidine dicarboxylic acid (PDA) that especially blocks the OFF retinal channel, did not affect the gain velocity of the slow phase of both the horizontal monocular head and eye OKN, for low stimulus velocities. Our results suggest that the retinal ON information channel, but not the OFF channel, is involved in the generation of the slow phase of the OKN of the frog, at least at low drum velocities.

Does the Introduction of Online Voting Create Diversity in Representation?

2021 ◽  
pp. 147892992110644
Author(s):  
Michael J Wigginton ◽  
Daniel Stockemer
Keyword(s):  
Political Communication ◽  
Research Note ◽  
Canadian Province ◽  
Representation Of Women ◽  
Internet Voting ◽  
Gender And Age ◽  
Before And After ◽  
Online Voting

The Internet’s effect on political communication is omnipresent. However, very few jurisdictions around the globe allow their citizens to cast their ballot online. What are the electoral consequences of this reform? Research, so far, has mainly looked at security considerations and effects on turnout. In this research note, we broaden the scope of prior studies by examining the effect of online voting on diversity in representation. Using the voting results of municipalities in the Canadian province of Ontario both before and after the implementation of online voting, we test whether this reform has increased the representation of women and youth. We do not find that Internet voting has any significant impact on which candidates are elected, with both the gender and age of elected mayors being constant across online and traditional elections. We further find that the number of woman candidates does not increase with online voting.

scholarly journals Training in Aura Reading: Results from a Small Quasi-Experimental Study in India (Research Note)

2018 ◽  
Vol 37 (2) ◽  
Keyword(s):  
Experimental Study ◽  
Research Design ◽  
Experimental Research ◽  
Training Session ◽  
Research Note ◽  
Physical Body ◽  
Before And After ◽  
Contingency Coefficient ◽  
Quasi Experimental

The aura is believed to be an invisible field surrounding the physical body, interpenetrating and extending beyond it. The present study examines whether appearance of an aura-like phenomenon around the hand can be perceived visually after a short training session. A quasi-experimental research design was employed with 47 participants with a mean age of 19 years. Results from before and after attempting to view an aura-like phenomenon around the hand were analyzed using Contingency Coefficient analysis. The results suggest that an aura-like phenomenon can be detected around the hand since the participants narrated several experiences that were novel (p < .001). We found a significant increase (p = .009) in the number of reports of positive thoughts among the respondents during the session in which an aura-like phenomenon was experienced.

Deformation Replication

1970 ◽  
Vol 28 ◽  
pp. 280-281
Author(s):  
J. Temple Black
Keyword(s):  
Cutting Speed ◽  
Machining Process ◽  
Depth Of Cut ◽  
Rake Face ◽  
Orthogonal Machining ◽  
Aluminum Chips ◽  
Before And After ◽  
Materials Used ◽  
Glass Knife ◽  
Very High

Tool materials used in ultramicrotomy are glass, developed by Latta and Hartmann (1) and diamond, introduced by Fernandez-Moran (2). While diamonds produce more good sections per knife edge than glass, they are expensive; require careful mounting and handling; and are time consuming to clean before and after usage, purchase from vendors (3-6 months waiting time), and regrind. Glass offers an easily accessible, inexpensive material ($0.04 per knife) with very high compressive strength (3) that can be employed in microtomy of metals (4) as well as biological materials. When the orthogonal machining process is being studied, glass offers additional advantages. Sections of metal or plastic can be dried down on the rake face, coated with Au-Pd, and examined directly in the SEM with no additional handling (5). Figure 1 shows aluminum chips microtomed with a 75° glass knife at a cutting speed of 1 mm/sec with a depth of cut of 1000 Å lying on the rake face of the knife.

The Clinical, Roentgenological and Morphological Effects of an Acute Exposure of Phosgene on the Lungs of Dogs

1971 ◽  
Vol 29 ◽  
pp. 236-237
Author(s):  
R. F. Bils ◽  
W. F. Diller ◽  
F. Huth
Keyword(s):  
Latent Period ◽  
Chemical Industry ◽  
Toxic Substance ◽  
Lung Edema ◽  
X Rays ◽  
Beagle Dogs ◽  
Male And Female ◽  
Morphological Alterations ◽  
Before And After ◽  
Electron Microscopes

Phosgene still plays an important role as a toxic substance in the chemical industry. Thiess (1968) recently reported observations on numerous cases of phosgene poisoning. A serious difficulty in the clinical handling of phosgene poisoning cases is a relatively long latent period, up to 12 hours, with no obvious signs of severity. At about 12 hours heavy lung edema appears suddenly, however changes can be seen in routine X-rays taken after only a few hours' exposure (Diller et al., 1969). This study was undertaken to correlate these early changes seen by the roengenologist with morphological alterations in the lungs seen in the'light and electron microscopes.Forty-two adult male and female Beagle dogs were selected for these exposure experiments. Treated animals were exposed to 94.5-107-5 ppm phosgene for 10 min. in a 15 m3 chamber. Roentgenograms were made of the thorax of each animal before and after exposure, up to 24 hrs.

Ultrastructure of Melanin Formation in Curvularia sp., Alternaria sp., and Drechslera Sorokiniana

1977 ◽  
Vol 35 ◽  
pp. 398-399
Author(s):  
M. H. Wheeler ◽  
W. J. Tolmsoff ◽  
A. A. Bell
Keyword(s):  
Potassium Phosphate ◽  
Thielaviopsis Basicola ◽  
Wild Type ◽  
Potassium Phosphate Buffer ◽  
Transmission Microscopy ◽  
Electron Transmission ◽  
Melanin Formation ◽  
Before And After ◽  
Alternaria Sp ◽  
Electron Transmission Microscopy

(+)-Scytalone [3,4-dihydro-3,6,8-trihydroxy-l-(2Hj-naphthalenone] and 1,8-di- hydroxynaphthalene (DHN) have been proposed as intermediates of melanin synthesis in the fungi Verticillium dahliae (1, 2, 3, 4) and Thielaviopsis basicola (4, 5). Scytalone is enzymatically dehydrated by V. dahliae to 1,3,8-trihydroxynaphthalene which is then reduced to (-)-vermelone [(-)-3,4- dihydro-3,8-dihydroxy-1(2H)-naphthalenone]. Vermelone is subsequently dehydrated to DHN which is enzymatically polymerized to melanin.Melanin formation in Curvularia sp., Alternaria sp., and Drechslera soro- kiniana was examined by light and electron-transmission microscopy. Wild-type isolates of each fungus were compared with albino mutants before and after treatment with 1 mM scytalone or 0.1 mM DHN in 50 mM potassium phosphate buffer, pH 7.0. Both chemicals were converted to dark pigments in the walls of hyphae and conidia of the albino mutants. The darkened cells were similar in appearance to corresponding cells of the wild types under the light microscope.

Evaluation of Freezing Methods by Low Temperature X-Ray Diffraction

1977 ◽  
Vol 35 ◽  
pp. 330-333
Author(s):  
T. Gulik-Krzywicki ◽  
M.J. Costello
Keyword(s):  
Biological Materials ◽  
Molecular Organization ◽  
X Ray Diffraction ◽  
Glass Capillary ◽  
X Ray ◽  
Rate Dependent ◽  
Before And After ◽  
Freeze Etching ◽  
Diffraction Patterns ◽  
Set Up

Freeze-etching electron microscopy is currently one of the best methods for studying molecular organization of biological materials. Its application, however, is still limited by our imprecise knowledge about the perturbations of the original organization which may occur during quenching and fracturing of the samples and during the replication of fractured surfaces. Although it is well known that the preservation of the molecular organization of biological materials is critically dependent on the rate of freezing of the samples, little information is presently available concerning the nature and the extent of freezing-rate dependent perturbations of the original organizations. In order to obtain this information, we have developed a method based on the comparison of x-ray diffraction patterns of samples before and after freezing, prior to fracturing and replication.Our experimental set-up is shown in Fig. 1. The sample to be quenched is placed on its holder which is then mounted on a small metal holder (O) fixed on a glass capillary (p), whose position is controlled by a micromanipulator.

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