scholarly journals Marine Litter in Croatian Adriatic: Sources, Quantities and Stakeholders′ Perspectives

2021 ◽  
Vol 13 (9) ◽  
pp. 4691
Author(s):  
Marina Funduk ◽  
Pero Tutman ◽  
Anamarija Farkaš ◽  
Sanja Tišma ◽  
Ana-Maria Boromisa
Keyword(s):  
Quantitative Analysis ◽  
Document Analysis ◽  
Mean Value ◽  
Survey Method ◽  
Marine Litter ◽  
Current State ◽  
The Mean ◽  
Mean Value Method ◽  
Marine Areas

The problem of marine litter is becoming more visible in Croatia. The main goal of this paper is to investigate issues related to marine litter in the Croatian Adriatic, from the current state of sources and quantities of marine litter, through marine litter monitoring and legislation, to stakeholders’ awareness about the marine litter issue in Croatia. The topic was designed as a case study and was covered by the method of document analysis and the survey method. Quantitative analysis was done for involved stakeholders and their level of interest. The mean value method and method for stakeholder mapping for marine areas was used. In addition, an exhaustive review of Croatian marine litter studies was done. The results of the research indicate that our knowledge about marine litter sources and quantities in the Croatian Adriatic is still quite scarce and that the stakeholders in Croatia have a moderate level of interest in the marine litter issue. Conclusions indicate that in Croatia particular attention is committed to strengthening both bilateral and multilateral relations with the neighboring countries given the transboundary nature that allows marine litter to spread over long distances.

scholarly journals A Mean Extragradient Method for Solving Variational Inequalities

Symmetry ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 462
Author(s):  
Apichit Buakird ◽  
Nimit Nimana ◽  
Narin Petrot
Keyword(s):  
Hilbert Space ◽  
Variational Inequality ◽  
Weak Convergence ◽  
Numerical Experiments ◽  
Variational Inequality Problem ◽  
Extragradient Method ◽  
Mean Value ◽  
Inequality Problem ◽  
The Mean ◽  
Mean Value Method

We propose a modified extragradient method for solving the variational inequality problem in a Hilbert space. The method is a combination of the well-known subgradient extragradient with the Mann’s mean value method in which the updated iterate is picked in the convex hull of all previous iterates. We show weak convergence of the mean value iterate to a solution of the variational inequality problem, provided that a condition on the corresponding averaging matrix is fulfilled. Some numerical experiments are given to show the effectiveness of the obtained theoretical result.

Learning for the workplace: a case study in graduate employees' generic competencies

2005 ◽  
Vol 17 (4) ◽  
pp. 231-242 ◽  
Author(s):  
Ai‐Hwa Quek
Keyword(s):  
Cognitive Skills ◽  
Work Performance ◽  
Survey Method ◽  
Content Type ◽  
Generic Competencies ◽  
Current State ◽  
Successful Work ◽  
The One ◽  
Tertiary Training

PurposeThis study seeks to address empirically the current state of generic competencies considered to be important for successful work performance among Malaysian graduate employees. This study also aims to explain the elements of generic competencies that are needed to complement the tertiary training of students in workplace learning.Design/methodology/approachUsing the survey method, questionnaires (validated by a pilot test and with a Cronbach's alpha of 0.81) were administered to a purposive sample of graduate employees (n=32).FindingsResponses were factor‐analysed and correlated through the Pearson product‐moment correlation procedure. Drawing from the significant correlations ( p<0.01) of the factors extracted, this study highlights interpersonal skills, knowledge‐acquiring skills and flexibility as being highly important in contributing toward success in work performance. Additionally, these graduate employees also expressed value‐improving skills, practical orientation abilities and cognitive skills as being important for successful work performance. These generic competencies are important for enabling Malaysian graduate employees to transfer learning from the classroom to the workplace for success in work performance.Research limitations/implicationsGiven the financial constraints, this study is limited to Malaysian graduate employees. Therefore, the generalisability of the results is limited to other situations that are similar to the one discussed in this study.Originality/valueIn the Malaysian context, tertiary training probably needs to consider the development of generic competencies in students so as to enable them to transfer tertiary learning to meet the changing demands of the workplace when they graduate. In this direction additional research is recommended in Malaysia so that graduates can be better trained to contribute successfully in the workplace.

scholarly journals Teachers’ Misbehaviours in Class and Students’ Reactions: A Case Study

2021 ◽  
Vol 9 (3) ◽  
pp. 97-114
Author(s):  
Reem Alkurdi ◽  
Sharif Alghazo
Keyword(s):  
English Language ◽  
Mean Value ◽  
Language Teachers ◽  
Communication Style ◽  
Communication Styles ◽  
Student Teacher Relationship ◽  
Efl Teachers ◽  
English Language Teachers ◽  
The Mean

This study aims to investigate English as a Foreign Language (EFL) teachers’ misbehaviours in class and their students’ reactions to these misbehaviours. Towards this end, 60 classroom observations of six English language teachers (N=10 each) were conducted at a public school in Jordan. Moreover, a survey was used to elicit 201 students’ reactions to their teachers’ misbehaviours by gauging their satisfaction with the teachers’ communication styles. Finally, the teacher participants were interviewed in order to more deeply understand why such misbehaviours occurred. Analysis of the data is grounded in the Expectancy Violation Theory. The results revealed that when the mean value of teachers’ communication style was more than 3 on a 5-point Likert Scale, the students often perceived their teachers as being positive, and the students compensated most of their teachers’ misbehaviours. However, when the mean value was below 3, the teachers were perceived as being negative, and the students reciprocated for most of the misbehaviours. The results also showed that the students are more tolerant towards their teachers’ misbehaviours as long as the teacher is perceived to be positive. The study provides insights into understanding the student-teacher relationship in EFL classes.

scholarly journals Multivariate autoregressive modelling and conditional simulation for temporal uncertainty analysis of an urban water system in Luxembourg

2021 ◽  
Vol 25 (1) ◽  
pp. 193-216
Author(s):  
Jairo Arturo Torres-Matallana ◽  
Ulrich Leopold ◽  
Gerard B. M. Heuvelink
Keyword(s):  
Water Quality ◽  
Monte Carlo ◽  
Uncertainty Propagation ◽  
Mean Value ◽  
Water Quantity ◽  
Urban Drainage ◽  
Urban Water ◽  
The Mean ◽  
Input Variables

Abstract. Uncertainty is often ignored in urban water systems modelling. Commercial software used in engineering practice often ignores the uncertainties of input variables and their propagation because of a lack of user-friendly implementations. This can have serious consequences, such as the wrong dimensioning of urban drainage systems (UDSs) and the inaccurate estimation of pollution released to the environment. This paper introduces an uncertainty analysis in urban drainage modelling, built on existing methods and applied to a case study in the Haute-Sûre catchment in Luxembourg. The case study makes use of the EmiStatR model which simulates the volume and substance flows in UDS using simplified representations of the drainage system and processes. A Monte Carlo uncertainty propagation analysis showed that uncertainties in chemical oxygen demand (COD) and ammonium (NH4) loads and concentrations can be large and have a high temporal variability. Furthermore, a stochastic sensitivity analysis that assesses the uncertainty contributions of input variables to the model output response showed that precipitation has the largest contribution to output uncertainty related with water quantity variables, such as volume in the chamber, overflow volume, and flow. Regarding the water quality variables, the input variable related to COD in wastewater has an important contribution to the uncertainty for the COD load (66 %) and COD concentration (62 %). Similarly, the input variable related to NH4 in wastewater plays an important role in the contribution of total uncertainty for the NH4 load (34 %) and NH4 concentration (35 %). The Monte Carlo (MC) simulation procedure used to propagate input uncertainty showed that, among the water quantity output variables, the overflow flow is the most uncertain output variable, with a coefficient of variation (cv) of 1.59. Among water quality variables, the annual average spill COD concentration and the average spill NH4 concentration were the most uncertain model outputs (coefficients of variation of 0.99 and 0.82, respectively). Also, low standard errors for the coefficient of variation were obtained for all seven outputs. These were never greater than 0.05, which indicates that the selected MC replication size (1500 simulations) was sufficient. We also evaluated how the uncertainty propagation can more comprehensively explain the impact of water quality indicators for the receiving river. While the mean model water quality outputs for COD and NH4 concentrations were slightly above the threshold, the 0.95 quantile was 2.7 times above the mean value for COD concentration and 2.4 times above the mean value for NH4. This implies that there is a considerable probability that these concentrations in the spilled combined sewer overflow (CSO) are substantially larger than the threshold. However, COD and NH4 concentration levels of the river water will likely stay below the water quality threshold, due to rapid dilution after CSO spill enters the river.

SET DEFUZZIFICATION AND CHOQUET INTEGRAL

2001 ◽  
Vol 09 (01) ◽  
pp. 1-12 ◽  
Author(s):  
YUKIO OGURA ◽  
SHOUMEI LI ◽  
DAN A. RALESCU
Keyword(s):  
Integral Method ◽  
Choquet Integral ◽  
Mean Value ◽  
Fuzzy Measure ◽  
The Other ◽  
Sufficient Condition ◽  
Aumann Integral ◽  
First Case ◽  
The Mean ◽  
Mean Value Method

In this paper, we discuss the defuzzification problem. We first propose a set defuzzification method, (from a fuzzy set to a crisp set) by using the Aumann integral. From the obtained set to a point, we have two methods of defuzzification. One of these uses the mean value method and the other uses a fuzzy measure. In the first case, we compare our mean value method with the method of the center of gravity. In the second case, we compare fuzzy measure method with the Choquet integral method. We also give there a sufficient condition so that the results in the last two methods are equivalent.

On Two First Order Reliability Methods for Computing the Non-Probabilistic Reliability Index

2014 ◽  
Vol 551 ◽  
pp. 648-652
Author(s):  
Xin Zhou Qiao
Keyword(s):  
Reliability Index ◽  
Limit State ◽  
Mean Value ◽  
Point Method ◽  
State Function ◽  
Design Point ◽  
First Order ◽  
Reliability Methods ◽  
The Mean ◽  
Mean Value Method

The two first order reliability methods (FORM) for computing the non-probabilistic reliability index, namely the mean-value method and the design-point method, are investigated. A performance comparison is presented between these two methods. The results show that: (1) the value of the reliability index of the mean-value method depends on the specific form of the limit state function, whereas the value of the reliability index of the design-point one does not;(2) the design-point method should be preferentially used in structural reliability assessment. The conclusions are verified by a numerical example.

scholarly journals The Effectiveness of Patient Safety Cultural Training with Mirror Method and Case Study on Nurse Understanding About Application of Patient Safety at Hospital Pekanbaru

2019 ◽  
Vol 1 (1) ◽  
pp. 11-17
Author(s):  
Awaliyah Ulfah Ayudytha Ezdha ◽  
Silvia Nora Anggreini ◽  
Dwi Elka Fitri
Keyword(s):  
Patient Safety ◽  
Standard Deviation ◽  
Mean Value ◽  
P Value ◽  
Test Results ◽  
Cultural Training ◽  
Lecture Method ◽  
The Mean

Quality development in hospitals has led to efforts to improve quality oriented towards patient safety. The purpose of this study was to compare what methods were most effective between lectures and case studies to improve nurses' understanding of the application of patient safety. The design of the research used is a mix method that is qualitative and quantitative. This research was carried out at Hospital in Pekanbaru with a sample of the study were all nurses who served at the hospital as many as 60 people. The results obtained from the study showed that the mean value of nurses 'understanding of patient safety habit after the lecture method training was 67.47 with a standard deviation of 8.320 while the mean value of nurses' understanding of the HABIT of patient safety after training in the case study method was 73.97 with a standard deviation of 6.835. The independent t test results obtained p value = 0.002. The results of this study are expected in addition to improving the understanding of nurses as well as the hospital can apply the most appropriate method so that the goals of the patient's safety goals are the quality of service can be achieved.

MASALAH PRIORITAS YANG DIHADAPI PETANI DALAM BUDIDAYA TOMAT DI DESA OEMATNUNU KECAMATAN KUPANG BARAT KABUPATEN KUPANG

2020 ◽  
Vol 21 (2) ◽  
pp. 111-121
Author(s):  
Juruslan Djawa Rangga Ndima ◽  
Serman Nikolaus ◽  
Selfius P. N. Nainiti
Keyword(s):  
Random Sampling ◽  
Mean Value ◽  
Descriptive Statistics ◽  
Survey Method ◽  
Straight Line ◽  
Cultivation Technique ◽  
The Mean ◽  
Quantitative Descriptive ◽  
High Level ◽  
Level Of Importance

The Research with respect to determine the priority problem faced by farmers in tomato cultivation at Oematnunu Village, West Kupang Sub-District, the District of Kupang, had been conducted for five months in 2019. Objectives of this researeh are:1) to indentify characteristics of tomato cultivation applied by farmers at Oematnunu Village, West Kupang Sub-District, Kupang District; 2) to determine the priority problem faced by farmers in the cultivation of tomato crops at Oematnunu Village, West Kupang Sub-District, the District of Kupang. The research was carried out by the use of a survey method. The research location was determined purposively. In determining 43 farmers as the sample of this research, it was applied proportional random sampling from the population of 74 farmers cultivating tomato crops. To answer objective 1, data were analyzed by the use of quantitative descriptive statistics namely mean value and frequency, while to answer objective 2, data were analized by the use of guide according to McCaslin and Tibesinda cited by Hungawuwali (2016) The procedures of this guide are: (a) finding out the mean value of importance and ability score in the application of each aspect of tomato cultivation, (b) finding out the overall mean value of importance and ability score of tomato cultivation aspect, and (c) making a matrix of 2X2 which is formed by X axis and Y and straight line which is drawn through coordinate point and parallel with X axis and Y. Results of research indicated that : 1) characteristics of tomato cultivation technique applied by farmers in the research location was not in good category; and 2) the priority of problems faced by farmer in tomato cultivation at Oematnunu Village, West Kupang Sub-District, the District of Kupang is tomato cropps are attacked by disease and pest, meanwhile farmer’s ability in the application of eradication technique of disease and pest attacking tomato crops is in low level, while the level of importance in this technique is high level.

Land degradation and soil conservation in the Barlad Plateau, Romania: a case study from Racova catchment

2020 ◽  
Author(s):  
Lilian Niacsu ◽  
Ion Ionita ◽  
Claudia Samoila ◽  
Georgel Grigoras ◽  
Ana-Maria Belebea-Apostu
Keyword(s):  
Land Degradation ◽  
Soil Conservation ◽  
Farming System ◽  
Mean Value ◽  
Environmental Threat ◽  
Conservation Measures ◽  
The Mean ◽  
Landslide Distribution ◽  
Soil Conservation Measures

&lt;p&gt;Land degradation by soil erosion, gullying, landslides and reservoir sedimentation is a major environmental threat in the Barlad Plateau of Romania. This paper reviews both land degradation and the development of soil conservation measures in a representative 32,908 ha catchment. Previous studies focused on larger regional areas and provided insufficient detailed information about land degradation and land improvements. Results estimated the mean value of soil loses at 22.7 t ha-1 y-1 based mostly on the USLE. Gully erosion is very limited in extent (covering 3% of the catchment area), but has considerable impacts in terms of sediment production and triggering or reactivating landslides. The 1:5,000 scale landslide distribution map shows that 56% of Racova Catchment is covered by landslides, in any shape or age. Most of them are shallow seated and inactive landslides. Traditional agriculture in the Barlad Plateau focused on &amp;#8216;up-and-down slope&amp;#8217; farming on small plots. Soil conservation measures were actively undertaken over a 20-year period (1970-1989). However, more recent legislation (No. 18/1991 Agricultural Real Estate Act) includes two provisions that discourage maintaining and extending soil conservation practises. Hence, the former contour farming system has been abandoned in favour of the traditional, degradational farming methods. The mean annual sedimentation rate in reservoirs is moderate at 2.7 cm y-1 in the upper Racova Catchment and almost double that rate in Puscasi Reservoir at the catchment outlet. Consequently, land degradation remains a serious problem in the study area and effective soil conservation is urgently needed.&lt;/p&gt;

Sign in / Sign up

Export Citation Format

Share Document