Life history variations in two populations of Sphaerium rhomboideum (Bivalvia: Pisidiidae)

1983 ◽  
Vol 61 (4) ◽  
pp. 860-867 ◽  
Author(s):  
G. L. Mackie ◽  
L. A. Flippance
Keyword(s):  
Life History ◽  
Growth Rates ◽  
The Other ◽  
Life History Patterns ◽  
Summer Growth ◽  
Two Populations ◽  
Selection Of

Distinctly different life history patterns of Sphaerium rhomboideum were observed in two permanent ponds within 1 km of each other near Guelph, Ontario. Compared with the population from the large pond, the population from the small pond usually had larger numbers of newborn (40% vs. 20%) that did not grow immediately after birth, three birth periods (peaks in late May, July to August, and October to November) instead of one (peak in September), significantly smaller newborn (3.8–4.2 mm in length depending on birth period vs. 4.5 mm in length), significantly faster average summer growth rates (0.147 mm∙day−1 vs. 0.062 mm∙day−1), shorter longevities (12 months vs. 14 months), both semelparous and iteroparous reproduction (depending on birth period) as opposed to only iteroparous reproduction in the other population, and less mortality of larvae (58% vs. 72%) resulting in annual ratios of selection of 3.21 for the semelparous form and 4.39 for the iteroparous form as opposed to 5.08 for the iteroparous form in the other population. Neither r, K, nor stochastic theories of life history tactics appear to predict the differences in life history patterns of these two populations of S. rhomboideum.

On Selection Procedures Based on The Exceedance Probability

1976 ◽  
Vol 25 (1-4) ◽  
pp. 29-40 ◽  
Author(s):  
Umesh D. Naik
Keyword(s):  
The Other ◽  
Sequential Procedure ◽  
Exceedance Probability ◽  
Selection Procedures ◽  
Normal Populations ◽  
Two Populations ◽  
Bayes Procedure ◽  
Selection Of ◽  
Better Than

A number of normal populations are to be compared in terms of exceedance probability. When comparing two populations, a population is to be designated as better than the other if it has a greater exceedance probability. A Bayes procedure is given for selecting the subset of populations which contains the best population. A Bayes sequential procedure for selection of the best population is also described.

The effect of Frankia isolates from Comptoniaperegrina and Alnuscrispa on the growth of Alnusglutinosa, A. cordata, and A. incana clones

1981 ◽  
Vol 11 (4) ◽  
pp. 758-762 ◽  
Author(s):  
Jeffrey O. Dawson ◽  
Soon-Hwa Sun
Keyword(s):  
Host Plant ◽  
Growth Rates ◽  
Host Plants ◽  
Root Nodules ◽  
Growth Increment ◽  
Stem Diameter ◽  
The Other ◽  
Diameter Growth ◽  
Stem Diameter Growth ◽  
Selection Of

Three Alnus clones, one each of A. glutinosa (L.) Gaertn., A. cordata (Lois.) Desg., and A. incana (L.) Ait., were inoculated with Frankia isolates from root nodules of Comptoniaperegrina (L.) Coult. and A. crispa var. mollis Fern. Both Frankia isolate and Alnus clone contributed significantly to postinoculation height and diameter growth of plants in nitrogen-free culture, while interaction between isolate and clone was not statistically significant (α = 0.05). All combinations of host plants and isolates yielded nodules that were effective in fixing nitrogen as evidenced by the ability of nodules to reduce acetylene to ethylene. Alnus plants inoculated with the Comptonia isolate grew in height at a rate 1.9 times that of Alnus plants inoculated with the A. crispa isolate, while more than doubling the stem diameter growth increment of plants inoculated with the A. crispa isolate. The A. glutinosa clone grew at least four times as rapidly in height and at least twice as rapidly in diameter as the other two Alnus clones after inoculation with Frankia isolates. Results indicate that potential exists for the improvement of growth rates of Alnus and other Frankia-nodulated plants by selection of both Frankia isolates and host plant genotypes for specific environments.

Note on Selection of Coordinate Systems for Geodynamics

1975 ◽  
Vol 26 ◽  
pp. 395-407
Author(s):  
S. Henriksen
Keyword(s):  
Sea Level ◽  
The Other ◽  
Coordinate Systems ◽  
Mean Sea Level ◽  
The Earth ◽  
The One ◽  
Static Systems ◽  
Selection Of

The first question to be answered, in seeking coordinate systems for geodynamics, is: what is geodynamics? The answer is, of course, that geodynamics is that part of geophysics which is concerned with movements of the Earth, as opposed to geostatics which is the physics of the stationary Earth. But as far as we know, there is no stationary Earth – epur sic monere. So geodynamics is actually coextensive with geophysics, and coordinate systems suitable for the one should be suitable for the other. At the present time, there are not many coordinate systems, if any, that can be identified with a static Earth. Certainly the only coordinate of aeronomic (atmospheric) interest is the height, and this is usually either as geodynamic height or as pressure. In oceanology, the most important coordinate is depth, and this, like heights in the atmosphere, is expressed as metric depth from mean sea level, as geodynamic depth, or as pressure. Only for the earth do we find “static” systems in use, ana even here there is real question as to whether the systems are dynamic or static. So it would seem that our answer to the question, of what kind, of coordinate systems are we seeking, must be that we are looking for the same systems as are used in geophysics, and these systems are dynamic in nature already – that is, their definition involvestime.

INTERFERENSI GRAMATIKAL DALAM KUMPULAN CERPEN BIARKAN AKU MEMULAI KARYA NURUL F. HUDA

2019 ◽  
Vol 1 (01) ◽  
pp. 16-23
Author(s):  
Zimmatul Liviana
Keyword(s):  
Short Stories ◽  
Data Collection ◽  
Qualitative Method ◽  
Language Variation ◽  
The Other ◽  
Qualitative Descriptive ◽  
Ofthe Object ◽  
Selection Of ◽  
Descriptive Qualitative

The research grammatical interference in a collection ofshort stories Biarkan Aku Memula iwork Nurul F. Hudaisa collection ofshort storiesset in the back that Is start work Let Nurul F. Huda contains many grammatical interference.The problem of this   study were(1)how   the various morphologi calinterference containedin   a   collection of short stories Biarkan Aku Memulai work Nurul F. Huda. (2)how the various syntactic interference contained in a collection of short stories Biarkan Aku Memulai work Nurul F. Huda. The purposeof this studyis to describe the morphological and         Syntactic interference contained in a collection of short stories Biarkan Aku Memulai work Nurul F. Huda. Sociolinguistics is the study of language variation and use in society. Interference is the event of the use of language elements of one into the other language elements that occur in the speakers themselves. This research uses descriptive qualitative method because to describe the actual realityin order to obtainan accurateand objective. Qualitative descriptive methods were used to analyzethe elements ofa word orphrase that incorporated elements of other languages with the analysis and description of the formulation of the problem is the answer. Data collection techniques using observation techniques, the determination ofthe object of research, the selection of short stories.Based on the analysis of the data in this study can be found that there are six forms of interference morphology, namely (1) the prefix nasal N-sound, (2) the addition of the suffix, (3) the exchange prefix, (4) exchange suffixes, (5) exchange konfiks, (6) removal affixes. While the syntactic interference only on the words and phrases in a sentence. The results of the study it can be concluded that the interference morphology more common than syntactic interference.

Identify This…

2009 ◽  
Vol 2 (2) ◽  
pp. 209-228 ◽  
Author(s):  
Leslie Rebecca Bloom ◽  
Amanda Reynolds ◽  
Rosemary Amore ◽  
Angela Beaman ◽  
Gatenipa Kate Chantem ◽  
...  
Keyword(s):  
Higher Education ◽  
Life History ◽  
Graduate Students ◽  
Women's Studies ◽  
Essential Elements ◽  
Women's Voices ◽  
Readers Theater ◽  
Creative Pedagogy ◽  
And Gender ◽  
Selection Of

Readers theater productions are meaningful expressions of creative pedagogy in higher education. This article presents the script of a readers theater called Identify This… A Readers Theater of Women's Voices, which was researched, written, and produced by undergraduate and graduate students in a women's studies class called Intersections of Race, Class, and Gender. Section one of the article reproduces the script of Identify This that was based on life history interviews with a diverse selection of women to illustrate intersectional identities. Section two briefly describes the essential elements of the process we used to create and perform Identify This.

The Propaganda Feedback Loop

2018 ◽  
Author(s):  
Yochai Benkler ◽  
Robert Faris ◽  
Hal Roberts
Keyword(s):  
Case Studies ◽  
Feedback Loop ◽  
The Other ◽  
Hillary Clinton ◽  
Donald Trump ◽  
The Public ◽  
False Reporting ◽  
Media Ecosystem ◽  
Crowd Out ◽  
Selection Of

This chapter presents a model of the interaction of media outlets, politicians, and the public with an emphasis on the tension between truth-seeking and narratives that confirm partisan identities. This model is used to describe the emergence and mechanics of an insular media ecosystem and how two fundamentally different media ecosystems can coexist. In one, false narratives that reinforce partisan identity not only flourish, but crowd-out true narratives even when these are presented by leading insiders. In the other, false narratives are tested, confronted, and contained by diverse outlets and actors operating in a truth-oriented norms dynamic. Two case studies are analyzed: the first focuses on false reporting on a selection of television networks; the second looks at parallel but politically divergent false rumors—an allegation that Donald Trump raped a 13-yearold and allegations tying Hillary Clinton to pedophilia—and tracks the amplification and resistance these stories faced.

scholarly journals Design Concepts for NiTiNOL Wires to Function as a Sensor

2021 ◽  
Author(s):  
D. Josephine Selvarani Ruth
Keyword(s):  
Shape Memory Alloy ◽  
Electrical Resistance ◽  
Nickel Titanium ◽  
The Other ◽  
Sensing Element ◽  
Proper Selection ◽  
Design Concepts ◽  
Mechanical Element ◽  
Selection Of ◽  
Inverse Hysteresis

AbstractNickel Titanium Naval Ordinance Laboratory (NiTiNOL) is widely called as a shape memory alloy (SMA), a class of nonlinear smart material inherited with the functionally programmed property of varying electrical resistance during the transformation enabling to be positioned as a sensing element. The major challenge to instrument the SMA wires is to suppress the wires’ nonlinearity by proper selection of two important factors. The first factor is influenced by the mechanical biasing element and the other is to identify the sensing current for the sensing device (SMA wires + biasing). This paper focuses on developing SMA wires for sensing in different orientation types and configurations by removing the non-linearity in the system’s output by introducing inverse hysteresis to the wires through the passive mechanical element.

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