Sources of Variation in Seed Mass in Arum italicum

Purpose: Investigative interviews are complex, dyadic, activities typically studied by focusing on developing techniques to improve witness performance. However, in field settings, interviewers are known to vary in their presentation of good interviewing practice. Thus, it is important to conduct research reflective of complex idiosyncrasies in witnesses, interviewers and unique pairings of both. This study explores such sources of variation in an by making use of a 'round-robin' design. Such methodology allows the statistical demonstration of individual difference and unique partner-generated variance in interview performance. Methods: In our study, a total of 45 witnesses were questioned about five real crime videos. After witnessing each event, witnesses were interviewed by a different interviewer (or a computer self-administered interview). In total, nine 'rounds' of interviews occurred, with five new witnesses being interviewed in the same five interview settings (resulting in 225 interviews). After each interview both interviewers and witnesses were asked to complete subjective interview experience ratings. The quality (grain size) and quantity of information in the statements was coded to index witness report accuracy. Results: Principally, the results demonstrate the degree to which witnesses and interviewers affect statement quality, and highlight the influence of unique interviewer-witness pairs. (Participant personality and interviewer behaviour were also analysed, but with limited effects). Conclusion: This study presents the useful round-robin methodology for studying interviewer-witness behaviour. Whilst the current personality and behavioural measures do not account for these individual differences, we advocate this methodology be adopted more widely to better understand interview performance.

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Still Connecting with Society?

10.1093/oso/9780198758631.003.0005 ◽

2017 ◽

Cited By ~ 2

Author(s):

Elin Haugsgjerd Allern ◽

Tània Verge

Keyword(s):

Political Parties ◽

Ethnic Minorities ◽

Social Groups ◽

The Public ◽

Organized Interests ◽

Social Interests ◽

Sources Of Variation ◽

Cross Country ◽

Formal Status ◽

Formal Rules

How parties structure their interaction with social groups is a key determinant of their capacity to provide linkage between the institutions of government and the public at large. This chapter investigates the extent to which modern political parties use formal measures to connect to relevant societal interests and strengthen their anchorage in society. The analysis centres on parties’ use of formal rules governing affiliation and representation to link with externally organized interests and parties’ establishment of sub-organizations with representation rights within the party. The chapter authors develop and test several hypotheses concerning cross-country and within-country sources of variation in formal linkage and test them empirically. In addition, they examine whether formal status and representation rights shape parties’ ability to represent descriptively the associated latent social interests focusing on the case of women and ethnic minorities.

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PLANTING DENSITY INFLUENCES THE EXPRESSION OF GENETIC VARIATION IN SEED MASS IN WILD RADISH (RAPHANUS SATIVUS L.: BRASSICACEAE)

American Journal of Botany ◽

10.1002/j.1537-2197.1992.tb13715.x ◽

1992 ◽

Vol 79 (10) ◽

pp. 1185-1193 ◽

Cited By ~ 19

Author(s):

Susan J. Mazer ◽

Lorne M. Wolfe

Keyword(s):

Genetic Variation ◽

Raphanus Sativus ◽

Seed Mass ◽

Planting Density ◽

Wild Radish ◽

Raphanus Sativus L

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Analysis of the Physical Properties of Seeds of Selected Viburnum Species for the Needs of Seed Sorting Operations

Processes ◽

10.3390/pr9040711 ◽

2021 ◽

Vol 9 (4) ◽

pp. 711

Author(s):

Zdzisław Kaliniewicz ◽

Dariusz J. Choszcz

Keyword(s):

Physical Properties ◽

Ornamental Plants ◽

Seed Mass ◽

Terminal Velocity ◽

Landscape Design ◽

Physical Parameters ◽

Regression Analyses ◽

Uniform Size ◽

Size Fractions ◽

Physical Attributes

Viburnum is a genus of colorful and ornamental plants popular in landscape design on account of their high esthetic appeal. The physical properties of viburnum seeds have not been investigated in the literature to date. Therefore, the aim of this study was to characterize the seeds of selected Viburnum species and to search for potential relationships between their physical attributes for the needs of seed sorting operations. The basic physical parameters of the seeds of six Viburnum species were measured, and the relationships between these attributes were determined in correlation and regression analyses. The average values of the evaluated parameters were determined in the following range: terminal velocity—from 5.6 to 7.9 m s−1, thickness—from 1.39 to 1.87 mm, width—from 3.59 to 6.33 mm, length—from 5.58 to 7.44 mm, angle of external friction—from 36.7 to 43.8°, mass—from 16.7 to 35.0 mg. The seeds of V. dasyanthum, V. lentago and V. sargentii should be sorted in air separators, and the seeds of V. lantana and V. opulus should be processed with the use of mesh screens with round apertures to obtain uniform size fractions. The seeds of V. rhytodophyllum cannot be effectively sorted into batches with uniform seed mass, but they can be separated into groups with similar dimensions.

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Physical properties and water absorption kinetics of three varieties of Mucuna beans

Scientific Reports ◽

10.1038/s41598-021-85087-8 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Ajibola B. Oyedeji ◽

Olajide P. Sobukola ◽

Ezekiel Green ◽

Oluwafemi A. Adebo

Keyword(s):

Physical Properties ◽

Water Absorption ◽

Rate Constant ◽

Geometric Mean ◽

Seed Mass ◽

Activation Energies ◽

Mucuna Pruriens ◽

Absorption Kinetics ◽

Kinetics Of ◽

Soaking Temperature

AbstractThe physical properties and water absorption kinetics of three varieties of Mucuna beans (Mucuna pruriens, Mucuna rajada and Mucuna veracruz) were determined in this study. Physical properties including length, width, thickness, geometric mean diameter, sphericity, porosity, bulk density, area, volume and one thousand seed mass were calculated while hydration kinetics was studied by soaking Mucuna beans in water at 30 °C, 40 °C and 50 °C and measuring water uptake at 9 h interval. Peleg’s equation was used to model the hydration characteristics and Arrhenius equation was used to describe the effect of temperature on Peleg’s rate constant k1 and to obtain the activation energies for soaking. Significant variations were observed in almost all the physical properties of the different varieties, however, there were no significant differences (p < 0.05) in their thicknesses and bulk densities. The effectiveness of fit of Peleg’s model (R2) increased with increase in soaking temperature. Peleg’s rate constant k1 decreased with increase in soaking temperature while k2 increased with temperature increase. Activation energies of Mucuna pruriens, Mucuna rajada and Mucuna veracruz were 1613.24 kJ/mol, 747.95 kJ/mol and 2743.64 kJ/mol, respectively. This study provides useful information about the properties of three varieties of Mucuna beans that could be of importance to processors and engineers for process design and optimization.

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Characterization and Evaluation of Salvia hispanica L. and Salvia columbariae Benth. Varieties for Their Cultivation in Southwestern Germany

Agronomy ◽

10.3390/agronomy10122012 ◽

2020 ◽

Vol 10 (12) ◽

pp. 2012

Author(s):

Samantha Jo Grimes ◽

Filippo Capezzone ◽

Peteh Mehdi Nkebiwe ◽

Simone Graeff-Hönninger

Keyword(s):

Seed Mass ◽

Point Of View ◽

Raw Material ◽

Salvia Hispanica ◽

Environmentally Sustainable ◽

Chia Seed ◽

Increasing Demand ◽

Salvia Hispanica L ◽

Reported Data ◽

Seed Yields

Rising consumer attraction towards superfoods and the steadily increasing demand for healthy, environmentally sustainable, and regionally produced food products has sharpened the demand for chia. Over the course of 4 years, two early flowering chia varieties belonging to Salvia hispanica L., and Salvia columbariae Benth. Species were identified to complete their phenological development and, therefore, able to reach maturity under a photoperiod >12 h, thus enabling the cultivation of chia in central Europe—more specifically, in southwestern Germany—consistently for the first time. Results obtained by the conducted field trial in 2018 showed that chia seed yields and thousand-seed mass ranged from 284.13 to 643.99 kg ha−1 and 0.92 to 1.36 g, respectively. Further, the statistical analyses showed that the protein content of the cultivated chia varieties ranged from 22.14 to 27.78%, the mucilage content varied from 10.35 to 20.66%, and the crude oil content amounted up to 28.00 and 31.73%. Fatty acid profiles were similar to previously reported data with α-Linolenic acid being the most prominent one, ranging from 60.40 to 65.87%, and we obtained ω6:ω3 ratios between 0.2 and 0.3. In conclusion, chia could represent a promising raw material from a nutritional point of view, while being able to diversify the local food basis of southwestern Germany.

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