scholarly journals Introduction of suitable species for planting in gaps of different size (case study: Loveh forest, Golestan, Iran)

2017 ◽  
Vol 63 (No. 1) ◽  
pp. 9-15
Author(s):  
Parhizkar Pejman ◽  
Sagheb-Talebi Khosro ◽  
Shahini Yaser ◽  
Teimouri Maryam
Keyword(s):  
Soil Surface ◽  
Medium Size ◽  
Annual Increment ◽  
Significant Difference ◽  
Quantitative Characteristics ◽  
North Of Iran ◽  
Collar Diameter ◽  
The Mean ◽  
Mean Annual Increment

This study was carried out in Loveh forest, north of Iran. We measured the quantitative characteristics of seedlings including collar diameter (measured at 1 cm above the soil surface), height, and current annual height increment and calculated the mean annual increments of height and diameter. Ten gaps with the same climatic, edaphic and topographic conditions were selected. In each gap, two transects, 2 m wide, were laid along the longest (North-South) and the shortest (West-East) axis. Nine sampling microplots, 4 m<sup>2</sup> area, were established: one at the centre, four at the edges and four under the canopy within the transects. Results showed that the highest frequency of seedlings was seen in medium-size gaps (200–500 m<sup>2</sup>). Quantitative characteristics of oak seedlings were better in small and medium-size gaps. There was a significant difference in the length of spring shoots, mean annual increment of height and mean annual increment of diameter between the species. Hornbeam, wild service and wild cherry seedlings are recommended for faster gap recovery, as the results showed that these species had the highest values of studied variables.

scholarly journals Above-ground dendromass of sprouted black locust energy plantations: a case study

2017 ◽  
Vol 23 (1-4) ◽  
Author(s):  
Zs. Keserü ◽  
I. Csiha ◽  
B. Bakti ◽  
K. Rédei
Keyword(s):  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Dry Weight ◽  
Test Results ◽  
Annual Increment ◽  
The Mean ◽  
Energy Plantations ◽  
Robinia Pseudoacacia L ◽  
Mean Annual Increment

Black locust (Robinia pseudoacacia L.) can be considered as one of the most suitable tree species for establishing energy plantations due to its favourable growing characteristics such as vigorous growing potential in the juvenile phase, excellent coppicing ability, a relatively high resistance to pests. Based on national and international test results the mean annual increment of oven-dry weight of energy plantations regenerated by coppicing generally exceeds the first cycle plantations established by seedlings.

scholarly journals Trio-preparation of Health Care Students for Digital Era in Universiti Malaysia Sabah – Case Study

2019 ◽  
pp. 31
Author(s):  
Maher Safien ◽  
Deena C Thomas ◽  
Richard Avoi ◽  
Mohamed Firdaus ◽  
Fairrul Bin Masnah Kadir ◽  
...  
Keyword(s):  
Health Care ◽  
Medical Students ◽  
Nursing Students ◽  
Educational Environment ◽  
Health Care Students ◽  
Digital Era ◽  
Significant Difference ◽  
The Mean ◽  
The Impact

Introduction: Creating an educational climate that engages the students in the digital era is crucial as it prepares them for the future.Objectives: The aim of this multiple case study is to highlight the impact of creative educational environment on the students’ awareness of digital era tools.Methods: In this study three activities were organized. Firstly, a brain storming seminar titled “Medical Practice in Artificial Intelligence Era” was held. The second event was E-poster competitions which challenged the students’ curiosity to address the health problems and to introduce innovative solutions to solve it. Medical and nursing students presented 32 posters. Third activity was MeDuino, a hands-on workshop to familiarize the students with arduino technology in medical practice.Results: Around 260 participants attended the seminar. In their feedback, 72% of students found the topics attractive and more than 60% found its theme relevant and beneficial. E-poster competition was evaluated using a modified rubric scale. The data was analysed by SPSS showed that only “creativity” and “practicality” merits scored little above the mean range. There was no statistically significant difference in the mean score of ‘creativity’ and ‘practicality’ between medical students and nursing students. However, in general medical students’ scores were higher compared to nursing students. 90% of students said that they improved cognitively and 85% found it fascinating. In Meduino workshop (Robotics), The 30 participants practiced mini projects. 86 % found it attractive, 81% expressed that it improve d their cognitive about technology as noted in comparing the pre and post- event questionnaires. The students’ concerns included the time constraints short time and lack of lecturers’ guidance during posters’ preparation.Conclusion(s): Transforming educational environment physically, emotionally and socially managed to address few aspects digital era. Allocating more time, facilities and training in the informal curriculum could enhance health-care students mastering of future tools.International Journal of Human and Health Sciences Supplementary Issue: 2019 Page: 31

scholarly journals The COVID-19 Pandemic and the Challenges of E-Assessment of Calculus Courses in Higher Education: A Case Study in Saudi Arabia

2021 ◽  
Vol 20 (3) ◽  
pp. 265-281
Author(s):  
Fatima M Azmi ◽  
Heba Bakr Khoshaim
Keyword(s):  
Saudi Arabia ◽  
Private University ◽  
Spring Semester ◽  
Mathematical Concepts ◽  
Statistical Tool ◽  
Significant Difference ◽  
The Mean ◽  
Exam Scores ◽  
Mean Differences

The COVID-19 pandemic has affected many aspects of our lives, including education. Due to this unexpected catastrophe, education has shifted to virtual-learning and auto-grading models in most parts of the world. This study explores the validity and appropriateness of auto-grading-assessment for online exams by comparing students’ online exam scores where they are first auto-graded and then manually graded. Furthermore, it investigates whether the mean differences in their scores are statistically significant. The study included two calculus courses taught by the authors, during the spring semester 2019-2020 at a private university in Saudi Arabia. The online exam was performed on the WebAssign platform, which has built-in calculus questions. The sample consisted of fifty-five students who were registered on those calculus courses. The quantitative data was analysed using the SPSS statistical tool. A paired t-test at an alpha level of 0.05 was performed on differences in mean exam scores between auto-graded and manually-graded scores. The statistical analysis results revealed a statistically significant difference in students' mean scores. Our findings illustrate the importance of human intelligence, its role in assessing students' achievements and understanding of mathematical concepts, and the extent to which instructors can currently rely on auto-grading. A careful manual investigation of auto-graded exams revealed different types of mistakes committed by students. Those mistakes were characterized into two categories: non-mathematical mistakes (related to Platform Design) and minor mathematical mistakes, which might deserve partial credit. The study indicated a need to reform the auto-grading system and provided some suggestions to overcome its setbacks.

scholarly journals Gross value yield potential of coppice, high forest and model conversion of high forest to coppice on best sites

2011 ◽  
Vol 57 (No. 12) ◽  
pp. 536-546 ◽  
Author(s):  
M. Kneifl ◽  
J. Kadavý ◽  
R. Knott
Keyword(s):  
Czech Republic ◽  
The Other ◽  
Yield Potential ◽  
Fuel Wood ◽  
Annual Increment ◽  
Site Class ◽  
The Czech Republic ◽  
The Mean ◽  
Model Conversion ◽  
Mean Annual Increment

&nbsp;Based on yield tables for oak high forest and oak coppice (both first site class) and using assortment tables and assortment prices in the Czech Republic in 2009, a set of variants of conversion of high forest to coppice was simulated. Average annual cut and average gross value of annual cut of such conversions were compared with those of well-established (in terms of the age structure balance) variants of coppice and high forest. Under the existing ratio of assortment prices, established coppice does not reach the gross value yield of high forest. No variant of simulated conversions was more financially profitable than the initial high forest. Furthermore, we found out that a +16.8% increase of the current fuel wood price would counterbalance the mean annual increment of gross value of the best coppice and the worst oak high forest variant. On the other hand, a +164.7% fuel wood price increase would be necessary to counterbalance the mean annual increment of gross value of the worst coppice and the best high forest variants. &nbsp;

scholarly journals Limits to CO2-Neutrality of Burning Wood. (Review)

2016 ◽  
Vol 53 (4) ◽  
pp. 48-55
Author(s):  
J. Abolins ◽  
J. Gravitis
Keyword(s):  
Ecological Footprint ◽  
Biomass Accumulation ◽  
Richards Equation ◽  
Forest Land ◽  
Land Area ◽  
Annual Increment ◽  
Excess Amount ◽  
The Mean ◽  
Mean Annual Increment ◽  
Fire Wood

Abstract Consumption of wood as a source of energy is discussed with respect to efficiency and restraints to ensure sustainability of the environment on the grounds of a simple analytical model describing dynamics of biomass accumulation in forest stands – a particular case of the well-known empirical Richards’ equation. Amounts of wood harvested under conditions of maximum productivity of forest land are presented in units normalised with respect to the maximum of the mean annual increment and used to determine the limits of CO2-neutrality. The ecological “footprint” defined by the area of growing stands necessary to absorb the excess amount of CO2 annually released from burning biomass is shown to be equal to the land area of a plantation providing sustainable supply of fire-wood.

scholarly journals The Effectiveness of Ice Breaking to Increase Students’ Motivation in Learning English

2021 ◽  
Vol 3 (1) ◽  
pp. 31-38
Author(s):  
Mohammad Sofyan Adi ◽  
Riska Ayu Susanti ◽  
Qomariatul Jannah
Keyword(s):  
Data Analysis ◽  
Experimental Design ◽  
Learning Process ◽  
First Grade ◽  
English Learning ◽  
Teaching English ◽  
Significant Difference ◽  
Post Test ◽  
The Mean

This study was generally attempted to find the effect of ice breaking to increase students' motivation in English learning at the first grade of SMP Nurul Jadid.  This research used pre-experimental design by using one shot case study pre-test and post-test. Before the treatment, the researcher gave the pre-test in one class. Moreover, the researcher taught English by using ice breaking in the experimental class. The last, the researcher conducted the post-test to know whether an ice breaking was effective for teaching English in experimental class. Based on the data analysis, the data t-test (2.77) was higher than t-table value (2.042). The result analyzing showed that there was significant difference on the students’ motivation taught by using ice breaker. The students’ mean score of the pre-test of the experiment class was 60. Then, in the post-test, the mean score of experiment class was 66.1. Therefore, hypothesis H0 was rejected and H1 was accepted. It concluded that ice breaking was effective in teaching English learning toward the students’ motivation for the first grade of SMP Nurul Jadid. Thus, this research make students be enjoy, be active, energize, feeling happiness, interactive in the classroom, stay in the class during learning process, and focus on the material.

scholarly journals Comparison of Visit Length and Waiting Time of Patients in Public and Private Clinics in the North of Iran

Health Scope ◽  
2021 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Raana Gholamzadeh Nikjoo ◽  
Mobin Sokhanvar ◽  
Khadijeh Motahari ◽  
Yegane Partovi ◽  
Mohammad Taghi Khodayari
Keyword(s):  
Waiting Time ◽  
Random Sampling ◽  
Simple Random Sampling ◽  
Public And Private ◽  
Patients Satisfaction ◽  
The North ◽  
Mean Waiting Time ◽  
Significant Difference ◽  
North Of Iran ◽  
The Mean

Background: The visit length is considered one of the indicators for assessing patients’ satisfaction. Factors such as waiting time for getting a visit affects the desirability of the visit. Objectives: This study aimed to investigate the visit length and waiting time of patients in public and private clinics in Tabriz. Methods: This is a descriptive-analytic study conducted in five clinics in 2018. A questionnaire-based survey was used to collect data from 386 participants recruited through simple random sampling. Mann-Whitney U and Kruskal-Wallis tests were applied to analyze the data using SPSS version 22.0. Results: Overall, the mean visit length was 25.5 and 25.4 min in public and private centers, respectively, while the mean waiting time was 141.2 and 156.4 min in public and private centers, respectively. There was no significant difference between public and private centers regarding the visit length (P > 0.05); however, there was a significant difference between public and private centers in terms of waiting time (P < 0.05). Conclusions: The waiting time was too much, especially in private clinics, which can negatively affect patient satisfaction. Therefore, suggested interventions may consist of using internet and telephone admission, scheduling a waiting list, and requiring physicians to be present on time.

scholarly journals PERTUMBUHAN AWAL TITI (Gmelina moluccana)

2020 ◽  
Vol 4 (2) ◽  
pp. 122-131
Author(s):  
Febian. F. Tetelay ◽  
Lily Pelupessy ◽  
Yacob Rahayaan ◽  
Bronie S Serlaloy ◽  
Hein A. Nimreskossu ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Environmental Factors ◽  
Plant Height ◽  
Soil Ph ◽  
Regression Equations ◽  
Growth Data ◽  
Annual Increment ◽  
The Mean ◽  
Mean Annual Increment ◽  
Sunlight Intensity

Titi or Gmelina moluccana is a type of the Lamiaceae family that grows in Maluku. Although this species is local, there is still very little information about its growth. This study aims to determine the growth of this species from planting in the field until the sixth year, environmental factors that affect its growth. Data collected in the form of plant height and diameter, air temperature, humidity, soil pH, soil moisture, sunlight intensity. Environmental factors are then related to plant height and diameter to determine environmental factors that affect the growth of these plants through multiple linear regression equations. Besides, the mean annual  increment and the current annual increment is also calculated to determine the cycle of this plant. Based on the results of research, Titi plants up to the sixth year have an men annual increment and the current annual increment is 0.99 meters/year and 1.46 meters for height and 1.62 cm/year and 2.50 cm for diameter. Until the sixth year this species has not entered the techniquecycle, while for woodworking purposes, this species can be harvested at the age of 24.5 years. Environmental factors that affect the growth of Titi are soil pH and soil moisture.

scholarly journals Clinical Epidemiology and Paraclinical Findings in Tuberculosis Patients in North of Iran

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Farhang Babamahmoodi ◽  
Ahmad Alikhani ◽  
Jamshid Yazdani Charati ◽  
Amir Ghovvati ◽  
Fatemeh Ahangarkani ◽  
...  
Keyword(s):  
Clinical Epidemiology ◽  
Wide Spectrum ◽  
Cross Sectional Study ◽  
Common Symptom ◽  
Cross Sectional ◽  
Significant Difference ◽  
North Of Iran ◽  
History Of ◽  
The Mean ◽  
Mean Time

Background. Mycobacterium tuberculosis (M.TB) causes a wide spectrum of clinical diseases. The prevalence of TB is different in various parts of Iran and throughout the world. The present study aimed to determine the clinical epidemiology and paraclinical findings of TB. Methods. A cross-sectional study was conducted from 2008 to 2013. Patient demographic, clinical, and radiologic characteristics, picked up from the TB patient’s files, were collected using a standard questionnaire format. Data was entered and analyzed using the SPSS version 16 statistical software and P value < 0.05 was considered statistically significant. Results. Out of 212 patients enrolled in this study 62% were male and the mean age was about 50 years old. 98.6% were Iranian, and 46.2% were rural. Prevalence of smear-positive TB was 66.4%. Prevalence of positive PPD was 50.7% with no significant difference between HIV-positive and -negative patients (P = 0.8). Prevalence of diabetes mellitus was 17%. 36% of the patients had history of smoking and about 29.3% were addicted to narcotics. Cough was the most common symptom (94.5%) and 84% had sputum. 15 cases (7%) had extrapulmonary TB. The mean time between the onset of symptoms and admission was 46.5 days. The delay for admission between urban and rural populations was not significantly different (P = 0.68); but for those who were in prison, the delay was significant (P = 0.02). About 46% of the patients had cavitary lesions in CXRs. Conclusion. Timely diagnosis of TB especially in prisoners by understanding its most important epidemiologic characteristics and clinical features can help to make an early treatment and prevent spread of mycobacteria and their complications.

Effects of Geographic Distribution of Small and Medium-Size Enterprises on Growth, Innovation, and Economic Contributions

2020 ◽  
Vol 11 (4) ◽  
pp. 23-41
Author(s):  
Khaula Abdulla Saif Alkaabi
Keyword(s):  
Geographic Distribution ◽  
Global Positioning System ◽  
Secondary Data ◽  
Medium Size ◽  
Home Based ◽  
Significant Difference ◽  
Global Positioning ◽  
The Mean ◽  
Economic Contribution ◽  
The Impact

The study examines the impact of the geographical distribution of SMEs on its growth, innovation, and economic contribution and validating the significant difference in the growth and economic contribution of home-based and non-home-based businesses in the UAE. This study also explores the economic and financial performances of SME sectors. Kruskal Wallis Test has been used to find the mean difference in growth and economic contributions of SMEs based on their respectively locations by using secondary data from government authorities. Also, a simple descriptive statistics analysis has been used to represent the data in a graphical and numerical form. Home-based and non-home-based entrepreneurships in the Emirates were mapped using global positioning system (GPS). This study reveals the importance of geographic distribution of SMEs in the country which will help government authorities as well as the entrepreneurs to choose their location for business.

Sign in / Sign up

Export Citation Format

Share Document