scholarly journals Influence of stand density on Zn and Cu concentrations in beech leaves

2012 ◽  
Vol 51 (No. 10) ◽  
pp. 458-467
Author(s):  
M. Barna ◽  
J. Machava
Keyword(s):  
Significant Influence ◽  
Stand Density ◽  
Significance Level ◽  
Beech Stand ◽  
The Mean

The paper deals with the response of leaves in a beech stand to opening after shelterwood cutting of various intensity (stocking of 0.3, 0.5, 0.7, 0.9) performed in 1989. The research was running in 1996–1997, on dominant, codominant and subdominant sample trees representing the mean stand diameter on all the examined plots. The obtained data were compared separately for the leaves from  the upper, medium and lower crown thirds. In some cases, there has been confirmed statistically significant influence of the cutting strength and other studied factors on Zn and Cu concentrations – at a significance level of α = 0.05. We found significant influence on the concentrations of the analysed elements, their total amounts (depending on the relevant amounts of leaves on the plots) and their amounts in leaves of unit trees. This paper is a continuation of the previous work focussed on Mn and Fe concentrations in beech leaves.

POTRET PERILAKU RELIGIUS MAHASISWA UIN SAYARIF HIDAYATULLAH JAKARTA

Al-Risalah ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 126-148
Author(s):  
Ay Maryani
Keyword(s):  
Religious Behavior ◽  
Male And Female ◽  
Mean Values ◽  
Significance Level ◽  
Average Value ◽  
Environment Variable ◽  
Independent Variable ◽  
The Mean ◽  
Gender Factor ◽  
Level 2

This study describes the religious behavior of UIN Syarif Hidayatullah Jakarta students. The variables used are internal and external environment as independent variable and religious behavior as dependent variable. The internal environment variable consists of gender factor, (male and female). The external environmental variables comprise the faculty environment, the present resident and the place to grow. The present resident consist of dormitories, boarding houses and parents' homes and the place to grow consist of urban and rural environment. Religious behavior variables consist of habluminallah behavior and habluminannas behavior. Habluminallah's behavior measured by (1) knowledge of faith and worship, (2) attitudes toward faith and worship, and (3) practice of faith and worship. The habluminannas variable measured by (1) Islamic behavior for them self, like honest, discipline and good work / studyethics, trust and concern on legality, (2) Islamic behavior with others, like generous, cooperation, caring, respect to the people's rights and tolerance and (3) Islamic behavior for the natural surroundings, like love of nature and nature conservation efforts. The methodology used was (1) Statistical descriptive, (2) MANOVA (Multivariate Analysis of Variance) and (3) Independent sample t-test. The results showed the religious behavior UIN Syarif Hidayatullah Jakarta students has a very good category. This is indicated by the mean values for the behavior of haluminallah and habluminannas of 158.85 and 178.76,  espectively. The average value of habluminallah behaviour in the range of values "145-180" with the category of "very good" and habluminannas behavior in the range value "165-205" with the category "very good. Habluminallah and habluminannas behavior are different for each faculty. This is indicated by the significance level of Pillai Trace, Wilk Lambda, Hotelling Trace, Roy's Largest Root of 0.00 (<0.05). Habluminallah and habluminannas behavior are the same for respondents who live in dormitories, boarding houses, and parents' homes. This is indicated by the value of F test and significance at Wilk's Lambda respectively for 2.055 and 0.085 (>0.05). Habluminallah and habluminannas behaviors are similar for urban and rural respondents. This is known from the sig level. (2-tailed) for habluminallah and habluminannas behavior of 0.317 and 0.245 (> 0.05), respectively. Habluminallah and habluminannas behaviors are similar for male and female. This is known from the sig level. (2-tailed) for habluminallah and habluminannas behavior of 0.950 and 0.307 (> 0.05),respectively. The results of this study are expected to be used to develop university policies that can enhance the Islamic values of UIN Syarif Hidayatullah Jakarta.

KEMAMPUAN TEKNIK PERSONAL SISTEM INFORMASI, UKURAN ORGANISASI, KETERLIBATAN PEMAKAI DALAM SISTEM TERHADAP KINERJA SISTEM INFORMASI AKUNTANSI

2020 ◽  
Vol 5 (2) ◽  
pp. 175-184
Author(s):  
Prapti Ningsih ◽  
Danang Mintoyuwono ◽  
Wianda Bias Intan Sepvie
Keyword(s):  
Information Systems ◽  
Significant Influence ◽  
Personal Information ◽  
Accounting Information ◽  
User Involvement ◽  
Simple Random Sampling ◽  
Organizational Size ◽  
Significance Level ◽  
Accounting Information Systems ◽  
Technical Ability

This research was conducted to examine the effect of the technical ability of personal information systems, organizational size, user involvement in the system on the performance of accounting information systems. The population in this study includes all employees who use accounting information systems, namely tellers and back offices in conventional banks in the South Jakarta area. The sampling method used in this study is Simple Random Sampling. The final data generated are 48 samples that are ready to be analyzed and tested. The analysis technique used is multiple linear regression and uses the name of the SPPS statistical application with a significance level of 5%. The results of this study indicate that (1) the technical ability of personal information systems has a significant influence on the performance of accounting information systems, (2) the size of the organization has no significant effect on the performance of accounting information systems, (3) user involvement in the system has a significant influence on accounting performance information Systems.

Growth table for Corsican pine in Flanders (Belgium)

1991 ◽  
Vol 56 ◽  
Author(s):  
B. Meuleman
Keyword(s):  
Insect Pests ◽  
Sandy Loam ◽  
Stand Density ◽  
Forest Tree ◽  
Permanent Plots ◽  
New Findings ◽  
Volume Increment ◽  
The Mean ◽  
Annual Volume ◽  
Very High

After  its introduction at the start of this century, the Corsican pine has become  an important forest tree in Flanders (Belgium). The total area covered by  Corsican pine is about 11.000 ha. Due to climatological factors it is  virtually absent from the Walloon part of Belgium. Despite the crisis in 1984  - 1986, practical experiences with its vitality and disease resistance are  generally positive. Compared to Scots pine which is native to Belgium, its  productivity and insensitivity for insect pests is large.     To quantify the productivity of Corsican pine, a growth table was  constructed using a method developed by PALM and DAGNELIE. It was based on  data from 321 temporarily and 80 permanent plots distributed over Flanders.  Five yield classes were distinguished according to dominant height at 50  years. For each yield class, a series of tables as a function of treatment  was constructed. Treatments were characterized by the mean annual  circumference increment.     These tables allow to predict the growth of Corsican pines. Such  predictions for the whole range of species are necessary for the development  of a good forestry policy and for timber industries. The tables also provide  information for any given Corsican pine stand that is helpful in practice:  expected productivity, stand density, determination of the felling quantum.      The data show that the productivity of Corsican pine is very high. The very  early culmination of the current annual volume increment and the rather  constant level of the mean annual volume increment after culmination are  interesting new findings. It is also shown that it is possible to work with  long rotation periods. This offers good opportunities for the production of  high quality wood and is also important for the social and ecological role of  the forest.     Productivity is lowest on very dry and sandy soils. A high productivity on  moderately dry sand and loamy sand soils and loamy soils make the Corsican  pine one of the most valuable tree species for the Kempen in Flanders.  Although productivity is very high on well drained sandy loam and loam soils,  plantation of Corsican pine on these locations is not advised.

scholarly journals Investigating the feasibility of cerebellar transcranial direct current stimulation to facilitate post-stroke overground gait performance in chronic stroke: a partial least-squares regression approach

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Dhaval Solanki ◽  
Zeynab Rezaee ◽  
Anirban Dutta ◽  
Uttama Lahiri
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Chronic Stroke ◽  
Least Squares Regression ◽  
Significance Level ◽  
Gait Performance ◽  
Wilcoxon Rank Sum Test ◽  
Gait Parameters ◽  
The Mean

Abstract Background Investigation of lobule-specific electric field effects of cerebellar transcranial direct current stimulation (ctDCS) on overground gait performance has not been performed, so this study aimed to investigate the feasibility of two lobule-specific bilateral ctDCS montages to facilitate overground walking in chronic stroke. Methods Ten chronic post-stroke male subjects participated in this repeated-measure single-blind crossover study, where we evaluated the single-session effects of two bilateral ctDCS montages that applied 2 mA via 3.14 cm2 disc electrodes for 15 min targeting (a) dentate nuclei (also, anterior and posterior lobes), and (b) lower-limb representations (lobules VIIb-IX). A two-sided Wilcoxon rank-sum test was performed at a 5% significance level on the percent normalized change measures in the overground gait performance. Partial least squares regression (PLSR) analysis was performed on the quantitative gait parameters as response variables to the mean lobular electric field strength as the predictors. Clinical assessments were performed with the Ten-Meter walk test (TMWT), Timed Up & Go (TUG), and the Berg Balance Scale based on minimal clinically important differences (MCID). Results The ctDCS montage specific effect was found significant using a two-sided Wilcoxon rank-sum test at a 5% significance level for 'Step Time Affected Leg' (p = 0.0257) and '%Stance Time Unaffected Leg' (p = 0.0376). The changes in the quantitative gait parameters were found to be correlated to the mean electric field strength in the lobules based on PLSR analysis (R2 statistic = 0.6574). Here, the mean electric field strength at the cerebellar lobules, Vermis VIIIb, Ipsi-lesional IX, Vermis IX, Ipsi-lesional X, had the most loading and were positively related to the 'Step Time Affected Leg' and '%Stance Time Unaffected Leg,' and negatively related to the '%Swing Time Unaffected Leg,' '%Single Support Time Affected Leg.' Clinical assessments found similar improvement in the TMWT (MCID: 0.10 m/s), TUG (MCID: 8 s), and BBS score (MCID: 12.5 points) for both the ctDCS montages. Conclusion Our feasibility study found an association between the lobular mean electric field strength and the changes in the quantitative gait parameters following a single ctDCS session in chronic stroke. Both the ctDCS montages improved the clinical outcome measures that should be investigated with a larger sample size for clinical validation. Trial registration: Being retrospectively registered.

THE INFLUENCE OF STUDENTS LEARNING STYLE AND LEARNING INTEREST ON THE LEARNING OUTCOMES OF PHYSICS CLASS X IPA DURING THE COVID-19 PANDEMIC

2021 ◽  
Vol 9 (3) ◽  
pp. 132-143
Author(s):  
Albert Lumbu ◽  
Bonefasius Y Boy ◽  
Muhamad Akbar
Keyword(s):  
Learning Styles ◽  
Learning Outcomes ◽  
Learning Style ◽  
Significant Influence ◽  
Pearson Correlation ◽  
Physics Learning ◽  
Significance Level ◽  
Pearson Correlation Test ◽  
Learning Interest ◽  
Learning Together

This study aims to determine whether there are: 1) the influence of learning styles on physics learning outcomes, 2) the influence of interest in learning on physics learning outcomes, 3) the influence of learning styles and interest in learning together on physics learning outcomes in class X SMA Negeri 1 Nimboran . This research was conducted at SMA Negeri 1 Nimboran in April - May 2021. The subjects in this study were all 52 students of class X majoring in science and the objects of research were learning styles, interest in learning and physics learning outcomes. The instruments used are questionnaires and documentation. Data analysis was carried out using the Pearson correlation test with a significance level of 0.05 and a regression test which resulted in conclusions as a result of the study. The results showed that, 1) there was a significant influence of learning style on physics learning outcomes with a contribution of 50.8%, 2) there was a significant influence of interest in learning on physics learning outcomes with a contribution of 60.9%, 3) there were significant influence of learning style and interest in learning, together on the learning outcomes of physics with a contribution of 64.3% influence

Effects of Relationship Enrichment Training on Improving Marital Satisfaction of Infertile Couples: A Randomized Control Trial

2021 ◽  
Vol 17 ◽  
Author(s):  
Seyedeh Zahra Masoumi ◽  
Khodayar Oshvandi ◽  
Masoumeh Rostami-Moez ◽  
Arezoo Shayan ◽  
Farideh Kazemi
Keyword(s):  
Marital Satisfaction ◽  
Intervention Group ◽  
Analysis Of Covariance ◽  
Control Group ◽  
Chi Square ◽  
Significance Level ◽  
Significant Difference ◽  
The Mean ◽  
Infertile Couples ◽  
Relationship Enrichment

Background: Infertility can cause low marital satisfaction. Marital satisfaction has an important effect on infertile couples’ health. Objective: This study aimed to assess the effect of relationship enrichment training on improving the marital satisfaction of infertile couples. Methods: This randomized clinical trial was conducted on 50 infertile couples in the infertility center of Fatemieh Hospital in Hamadan, Iran in 2018. Participants were matched for demographic characteristics and randomly assigned to intervention and control groups (each group had 25 couples). Informed consent was obtained from all participants. The Enrich Marital Satisfaction questionnaire and demographic information were used to collect data before the study and two months after the intervention. Two trained midwifery students taught only the intervention group the relationship enrichment topics in seven sessions (each session = 90 minutes). The data were analyzed by SPSS Statistics version 21 using analysis of covariance, independent t-test, chi-square, and Mann–Whitney. The significance level was set at p ≤ 0.05. Results: There was no significant difference in demographic and obstetric information between the two groups (p >0.05). The mean of marital satisfaction in the intervention group significantly increased among women and men from 151.00 ±28.61 to 154.88 ±22.62 and from 152.56 ±27.33 to 159.24 ±22.14, respectively, (p <0.001). Conversely, the mean of marital satisfaction decreased among women and men from 158.13 ±13.86 to 146.25 ±19.53 and from 164.25 ±17.00 to 153.17 ±27.50 in the control group (p=0.02). Conclusion: Relationship enrichment training can be effective in promoting the marital satisfaction of infertile couples. Registration number: The National Center for Strategic Research in medical education, No. 960185.

scholarly journals Different trends between extreme and median surface aerosol extinction coefficients over China inferred from quality controlled visibility data

2017 ◽  
Author(s):  
Jing Li ◽  
Chengcai Li ◽  
Chunsheng Zhao
Keyword(s):  
Northwest China ◽  
Positive Trend ◽  
Median Surface ◽  
Aerosol Extinction ◽  
Significance Level ◽  
The North ◽  
Synoptic Conditions ◽  
The Mean ◽  
Mean Trend ◽  
Year 2000

Abstract. Although the temporal changes of aerosol properties have been widely investigated, the majority focused on the averaged condition without much emphasis on the extremes. However, the latter can be more important in terms of human health and climate change. This study uses a previously validated, quality-controlled visibility dataset to investigate the long-term trends of extreme surface aerosol extinction coefficient (AEC) over China, and compare them with the median trends. Two methods are used to independently evaluate the trends, which arrive at consistent results. The sign of extreme and median trends are generally coherent, whereas their magnitudes show distinct spatial and temporal differences. In the 1980s, an overall positive trend is found throughout China with the extreme trend exceeding the mean trend, except for Northwest China and the North China Plain. In the 1990s, AEC over Northeast and Northwest China starts to decline while the rest of the country still exhibits an increase. The extreme trends continue to dominate in the south while it yields to the mean trend in the north. After year 2000, the extreme trend becomes weaker than the mean trend overall in terms of both the magnitude and significance level. The annual trend can be primarily attributed to winter and fall trends. The results suggest that the decadal changes of pollution in China may be governed by different mechanisms. Synoptic conditions that often result in extreme air quality changes might dominate in the 1980s, whereas emission increase might be the main factor for the 2000s.

scholarly journals Erosive rainfall in the Rio do Peixe Valley: Part III - Risk of extreme events

2018 ◽  
Vol 22 (1) ◽  
pp. 63-68
Author(s):  
Álvaro J. Back ◽  
Augusto C. Pola ◽  
Nilzo I. Ladwig ◽  
Hugo Schwalm
Keyword(s):  
Extreme Events ◽  
Annual Rainfall ◽  
Data Series ◽  
Rainfall Erosivity ◽  
Significance Level ◽  
Control Structures ◽  
Kolmogorov Smirnov ◽  
Runoff Control ◽  
The Mean ◽  
Erosive Rainfall

ABSTRACT Understanding the risks of extreme events related to soil erosion is important for adequate dimensioning of erosion and runoff control structures. The objective of this study was to determine the rainfall erosivity with different return periods for the Valley of the Rio do Peixe in Santa Catarina state, Brazil. Daily pluviographic data series from 1984 to 2014 from the Campos Novos, and Videira meteorological stations and from 1986 to 2014 from the Caçador station were used. The data series of maximum annual rainfall intensity in 30 min, maximum annual erosive rainfall, and total annual erosivity were analyzed for each station. The Gumbel-Chow distributions were adjusted and their adhesions were evaluated by the Kolmogorov-Smirnov test at a significance level of 5%. The Gumbel-Chow distribution was adequate for the estimation of all studied variables. The mean annual erosivity corresponds to the return period of 2.25 years. The data series of the annual maximum individual rainfall erosivity coefficients varied from 47 to 50%.

scholarly journals Number Head Together (NHT) in Teaching Writing in EFL Classroom

2021 ◽  
Vol 1 (2) ◽  
pp. 22
Author(s):  
Hidayatul Hamdiah ◽  
Nik Mohd Rahimi Nik Yusoff
Keyword(s):  
Quantitative Research ◽  
Teaching Writing ◽  
Vocational High School ◽  
Significance Level ◽  
Tenth Graders ◽  
Writing Test ◽  
Before And After ◽  
Post Test ◽  
Efl Students ◽  
The Mean

This article focused on the effectiveness of Number Head Together in teaching writing in the EFL Classroom. The aim of the study was to improve EFL students’ writing. This study was quantitative research and used an experimental design. The population was 30 students and the sample was 15 students. Purposive sampling was used in determining the sample of the study. The writing test was the instrument used to collect the data. The data were analyzed by using descriptive statistics and paired sample t-test to test the hypothesis. The students' instrument was an essay-informed descriptive text. Furthermore, the researchers used pre and post to compare scores before and after implied Number Head Together. The mean score of the pre-test was 49.06 at p = 1.364 and the post-test was 78.40 at p = 1.576 which was higher than 0.05 (as the standard significance level in SPSS). This value showed the differences before and after implementing Number Head Together. Hence, it can be concluded that Number Head Together was significantly effective in teaching writing in the tenth graders of Public Vocational High School (SMKN) 1 Janapria, Indonesia. However, The student's writing improves because in grouping the students able to help each other. Keywords:  Number Head Together (NHT), EFL Classroom,  Teaching Writing

scholarly journals Pengaruh Audit Tenure, Komite Audit Dan Audit Capacity Stress Terhadap Kualitas Audit

2019 ◽  
Vol 1 (2) ◽  
pp. 543-555
Author(s):  
Stephanie Yolanda ◽  
Fefri Indra Arza ◽  
Halmawati Halmawati
Keyword(s):  
Significant Influence ◽  
Audit Committee ◽  
Audit Quality ◽  
Stock Exchange ◽  
Secondary Data ◽  
Manufacturing Companies ◽  
Significance Level ◽  
Earnings Surprise ◽  
Data Collection Technique ◽  
Benchmark Approach

This study aims to determine the effect of the audit tenure, audit committee, and audit capacity stress on audit quality as measured by earnings surprise benchmark approach. The research used secondary data. The population was all manufacturing companies listed in Indonesia Stock Exchange in the period of 2015-2017. The data collection technique used is purposive sampling and 303 samples obtained data. The independent variables were audit tenure, audit committee, and audit capacity stress at the significance level of 5%.  This study using logistic regression analysis techniques. The result of the research showed that audit tenure had no significant influence on audit quality with a significance level that is equal to 0.145, audit committee had no significant influence on audit quality a significance level that is equal to 0.652, and audit capacity stress had no significant influence on audit quality a significance level that is equal to 0.522 of the manufacturing companies listed in Indonesia Stock Exchange

Sign in / Sign up

Export Citation Format

Share Document