scholarly journals APLIKASI PUPUK KOMPOS DAN FREKUENSI PEMUPUKAN NPK DALAM MENINGKATKAN PRODUKSI BAWANG MERAH (Allium ascalonicum L) PADA TANAH GAMBUT

2020 ◽  
Vol 34 (3) ◽  
pp. 201-210
Author(s):  
Selvia Sutriana ◽  
M. Nur
Keyword(s):  
Research Design ◽  
Interaction Effect ◽  
Crop Production ◽  
Peat Soil ◽  
Tuber Number ◽  
Tuber Weight ◽  
Main Application ◽  
Main Effects

ABSTRACT Peatlands is a very specific ecosystem with conditions that are always flooded, fragile, relatively infertile, able to absorb more water, and bad aeration. Riau has the largest peat land, which is 64% of the total peatlands area in Sumatra, but the development of shallot has not been intensively cultivated. So it must be dealt with seriously. The use of compost fertilizer and the frequency of NPK apply can improve the nature of these peatlands and increase crop production. The aim of study was to determine the interaction effect and the main application of compost and the frequency of NPK apply to increasing shallot production on peat soil. Research conducted at the Faculty of Agriculture Experimental Farm, Riau Islamic University during 6 month, i.e. form March - August 2018. Factorial Completely Randomized Research design, the first factor was 10, 20 and 30 tons/ha of corn compost, the second factor was NPK 16:16:16 fertilization frequency 1 and 2 fertilizing doses of 150, 300 and 450 kg/ha. Parameters observed were peat analysis, tuber number, tuber diameter, wet tuber weight per clump, dry tuber weight per clump and percentage of tuber shrinkage. The results showed that the interaction and main effects were significant for all observed parameters with the best treatment of compost is 30 tons/ha and 2 times the fertilizer dose of 150 kg/ha per application (300 kg/ha). Keywords: Shallot, Frequency, Compost, Fertilization, NPK, Production

Evaluating Options for CRT Display of Process Trend Data

1982 ◽  
Vol 26 (1) ◽  
pp. 49-53 ◽  
Author(s):  
Christopher G. Koch ◽  
Thomas R. Edman ◽  
R. Kim Guenther
Keyword(s):  
Reaction Time ◽  
Interaction Effect ◽  
Error Rates ◽  
Time Orientation ◽  
Load Management ◽  
Control Room ◽  
Control Task ◽  
Nuclear Control ◽  
Trend Data ◽  
Main Effects

Effectiveness of colorgraphics CRT-based process trend display formats was evaluated by manipulating time scale orientation and time directionality. Performance was assessed in terms of reaction time and accuracy in responding to questions representative of process control task scenarios. Reaction time analyses reveal no main effects of time orientation or directionality, but a reliable orientation-directionality interaction effect is present. This interaction supports the conclusion that more rapid interpretation of trend is associated with x-axis time orientation progressing away from the origin and with y-axis time orientation progressing toward the origin. Error rates were nearly equivalent among the format types and supported no further discrimination among them. The findings have implications for the design of trend displays in applications such as nuclear control room, petrochemical processing, and load management.

scholarly journals Consumo de alcohol, tabaco, cannabis y otras drogas en la adolescencia: efectos de la familia y el barrio [Use of alcohol, tobacco, cannabis and other drugs in adolescence: Effects of family and neighborhood]

2015 ◽  
Vol 31 (3) ◽  
pp. 1000 ◽  
Author(s):  
María C. Fuentes ◽  
Antonio Alarcón ◽  
Fernando García ◽  
Enrique Gracia
Keyword(s):  
Risk Factors ◽  
High Risk ◽  
Parental Involvement ◽  
Parenting Styles ◽  
Interaction Effect ◽  
Protective Factor ◽  
Intervention Programs ◽  
Educational Strategies ◽  
Neighborhood Risk ◽  
Main Effects

The aim of this study was to analyze the protective or risk factors of parental educational styles for the consumption of alcohol, tobacco, cannabis and other drugs, considering the interaction of parenting styles with the dangerousness of the neighborhood. Based on the responses of 628 adolescents, 369 females (58.8%) and 259 males (41.2%) between 15 and 17 years old (<em>M</em> = 16.03 years old, <em>SD</em> = 0.79 years old), families were classified according to their educational style (authoritative, indulgent, authoritarian or neglectful) and their level of perceived neighborhood risk (high or low). Results showed no interaction effect; however, main effects of educational styles and perceived neighborhood risk were obtained. Adolescents from indulgent families showed the lowest consumption in the substances evaluated, while those from authoritative, authoritarian and neglectful families showed the highest consumption. Moreover, adolescents from high-risk neighborhoods obtained the highest consumption. Indulgent educational style, acting primarily through affection and not imposition, works as a protective factor regardless of the danger in the neighborhood. The importance of encouraging this parental performance in prevention and intervention programs is highlighted, promoting specific educational strategies to improve affection, communication and parental involvement.

The Role of Power Distance and Explanation Facility in Online Bargaining Utilizing Software Agents

2011 ◽  
pp. 73-90
Author(s):  
John Lim
Keyword(s):  
Factorial Design ◽  
Task Performance ◽  
Interaction Effect ◽  
Power Distance ◽  
Software Agents ◽  
Research Perspective ◽  
Online Transactions ◽  
Main Effects ◽  
Factorial Design Experiment

Online transactions have become increasingly popular and deserve greater attention from a research perspective. Whereas there are various aspects of online transactions, this study specifically examined an online bargaining scenario utilizing software agents. User’s performance and attitudes were studied in a 2x2 factorial-design experiment. The independent variables were power distance (a dimension of culture)-for reasons associated with increasing and irresistible globalization, and explanation facility-for its conjecturable benefits in helping users to better understand and work with their software agents. Results showed these factors to have an interaction effect on task performance; as well, explanation facility exhibited main effects on trust and satisfaction. The findings have implications for system designers and builders; they also help managers in tailoring their expectations on what technology can deliver-under which conditions.

scholarly journals Effects of nitrogen on yield and chlorophyll of potato (Solanum tuberosum L.) cultivars

1970 ◽  
Vol 38 (2) ◽  
pp. 163-169 ◽  
Author(s):  
Semiha Güler
Keyword(s):  
Solanum Tuberosum ◽  
Tuber Yield ◽  
Solanum Tuberosum L ◽  
Total Yield ◽  
Correlation Coefficients ◽  
Tuber Number ◽  
Tuber Weight ◽  
Nitrogen Rate ◽  
Leaf Chlorophyll ◽  
Nitrogen Rates

Effects of nitrogen on the leaf chlorophyll (chl), yield and yield attributing characters of potato as tuber number and mean tuber weight were studied. Correlation coefficients between the investigated characters were determined. Five nitrogen rates (0, 150, 200, 250 and 300 kg/ha) and four potato cultivars (Burren, Slaney, Anna and Emma) were used in the study. First, second, third class tuber yields and total tuber yield, tuber number per plant, and leaf chl were significantly influenced by both nitrogen rate and cultivar, whereas mean tuber weight was affected only by cultivar. Maximum total yield was obtained at 200 kg N/ha. There was significant linear relationship between leaf chl and N applied (R2=0.91). There were significant correlations between chl and yield and yield related characters. Total yield significantly correlated with leaf chl. Correlations between first class yield and total yield as well as total yield and tuber number per plant were highly significant.   Key words: Potato; Solanum tuberosum L.; Leaf chlorophyll; Nitrogen; Yield DOI: 10.3329/bjb.v38i2.5141 Bangladesh J. Bot. 38(2): 163-169, 2009 (December)  

Fixed and Variable Time Press and Sex Differences in Production of Verbal Originality

1986 ◽  
Vol 63 (2) ◽  
pp. 1011-1016 ◽  
Author(s):  
Seyed Hossein Sajjadi-Bafghi
Keyword(s):  
Sex Differences ◽  
Interaction Effect ◽  
Female Students ◽  
Variable Time ◽  
Main Effects

Thinking Creatively with Sounds and Words was administered to 42 male and 42 female students (Grades 7 through 9) to investigate the effects of time press (fixed vs variable) on sex differences in production of verbal originality. The results indicated that the main effects of time press and sex and their interaction effect were nonsignificant.

Core Self-Evaluations

2008 ◽  
Vol 13 (2) ◽  
pp. 96-102 ◽  
Author(s):  
Geir Scott Brunborg
Keyword(s):  
Social Support ◽  
Job Stress ◽  
Interaction Effect ◽  
Job Demands ◽  
Job Control ◽  
Job Outcomes ◽  
Southern Norway ◽  
And Control ◽  
Core Self ◽  
Main Effects

Core self-evaluations (CSE), a personality construct underlying self-esteem, locus of control, generalized self-efficacy, and neuroticism, has previously been found to relate strongly to job satisfaction. While previous research has shown relationships between personality traits and various adverse psychosocial job outcomes, no published studies have looked at the relationship between CSE and job stress. A study was conducted to test the effects of job demands, job control, and social support, as hypothesized in the job demand control support (JDCS) model, and the effect of CSE on job stress. Two hundred and twelve employees from 12 work places in southern Norway filled in a questionnaire consisting measures of job demands, job control, social support, CSE, and job stress. Initially, the results from hierarchical multiple regression analysis showed significant main effects of demands and control on job stress. However, when social support was included in the analysis, control was no longer significant. In addition, ANOVA showed that the two-way job demands × job control interaction effect, and the three way job demands × job control × social support interaction effect, as predicted by the JDCS model, were nonsignificant. The results showed a strong positive main effect of CSE on perceived job stress, and that CSE accounted for a large proportion of the variance in job stress. This is in accordance with studies that have shown relationships between other personality measures and job stress. The present study confirms the relevance of CSE for further research on links between personality and job stress.

Environmental Design, Personality, and Online Learning

2018 ◽  
Vol 62 (1) ◽  
pp. 1171-1175
Author(s):  
Nancy J. Stone
Keyword(s):  
Online Learning ◽  
Learning Environment ◽  
Interaction Effect ◽  
Environmental Design ◽  
Online Tutorial ◽  
Main Effects ◽  
The Impact

Students completed an online tutorial presented as a video or PowerPoint presentation in a room with or without a window with blue, green, red, or white draperies to determine the impact of the environment on online learning. Students’ scores improved significantly from pretest to posttest; however, contrary to expectation, there were no main effects of windows, color, or the type of tutorial. There was a Room X Color interaction effect. Contrary to expectation, posttest scores were highest in the windowed room with red drapes and in the windowless room with green or white drapes. The lowest posttest scores occurred in a windowless room with red drapes and a windowed room with green drapes. Learners high in extraversion and agreeableness tended to have lower posttest scores, but high levels of conscientiousness were not related to performance. These results suggest that the presence of a window influences the impact of color in the learning environment, but the relation between personality and online performance is still unclear.

Growth and Productivity of Tapioca (Manihot utilissima) IV. Devlopment and Yield of Tubers

1974 ◽  
Vol 10 (1) ◽  
pp. 9-16 ◽  
Author(s):  
C. N. Williams
Keyword(s):  
Growth Rate ◽  
Root Length ◽  
Stem Growth ◽  
Tuber Number ◽  
High Yield ◽  
Tuber Growth ◽  
Tuber Weight ◽  
Storage Tissue ◽  
Slowing Down ◽  
Tissue Cells

SUMMARYRoot measurements on three Malayan varieties of tapioca (high, medium and low-yielding clones) showed that the onset of tuberization brings about a slowing-down or cessation of growth in root length, but no changes in stem growth rate were associated with the onset of tuber growth. High yield was associated with high tuber weight rather than with tuber number, which could be related to the size of storage tissue cells formed by the root cambium. The process of tuberization in tapioca is discussed generally.

Using MYSTAT to Analyze Simple Main Effects in Analysis of Variance

1994 ◽  
Vol 79 (1) ◽  
pp. 265-266
Author(s):  
Richard A. Hudiburg
Keyword(s):  
Analysis Of Variance ◽  
Interaction Effect ◽  
Significant Interaction ◽  
Significant Interaction Effect ◽  
Effect Factor ◽  
Research Designs ◽  
Main Effect ◽  
Two Factors ◽  
Main Effects

Research designs with two factors having a significant interaction effect are analyzed for simple main effects using MYSTAT. The coding used performs a series of one-way analyses of variance for each main-effect factor at only one level of the second factor.

Age, Socioeconomic Status and Human Abilities

1970 ◽  
Vol 1 (2) ◽  
pp. 161-169 ◽  
Author(s):  
Ronald L. Nuttall ◽  
James L. Fozard
Keyword(s):  
Socioeconomic Status ◽  
Interaction Effect ◽  
Manual Dexterity ◽  
Equal Size ◽  
Aptitude Test ◽  
Healthy Men ◽  
3D Space ◽  
General Aptitude Test ◽  
Ability Tests ◽  
Main Effects

The effects of age and socioeconomic status (SES) on the twelve ability tests of the General Aptitude Test Battery (GATB) were examined with a population of 1146 healthy men between 25 and 83 years of age. The main effects of Age and SES were highly significant and of about equal size. The interaction effect was not significant, indicating that Age and SES do not interact in this ability domain. All twelve tests had highly significant declines with Age but the magnitudes of the declines differed greatly. Most affected by Age was the psychomotor test, Disassemble, while least affected were Arithmetic Reason and Vocabulary. Nine tests showed highly significant SES differences with Computation most differentiating followed by Mark Making, 3D—Space, Vocabulary and Arithmetic Reason. Unrelated to SES were the manual dexterity tests of Place, Turn, and Disassemble. Only 3D-Space was highly related to both Age and SES.

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