scholarly journals Information Reliability Assessment and Filtering for Decision Making. Case Study of Lithuanian and China Students’ Life Goals Survey Data

Symmetry ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2452
Author(s):  
Aleksandras Krylovas ◽  
Natalja Kosareva ◽  
Stanislav Dadelo
Keyword(s):  
Statistical Methods ◽  
Reliability Assessment ◽  
Research Data ◽  
Life Goals ◽  
Sociological Research ◽  
Improved Method ◽  
Student Data ◽  
Information Reliability ◽  
Erroneous Data

This article presents the methodology and tools to evaluate the reliability of quantitative sociological research data. The problem of filtering unreliable data is usually solved by statistical methods. This article proposes an improved method for filtering unreliable data. In this case, the statistical methods are not applied to the initial data but the value of the distance function between the two preferences. This allows for the disclosure of conflicting or erroneous data. Calculation of the distance between two preferences and prioritisation of life goals are based on binary relation theory, where the properties of symmetry (antisymmetry) are very important. The article presents a case study on 11 life goals evaluation and ranking by Lithuanian and China students. The study revealed that the China student data filtered at least twice as much as the Lithuanian student data, i.e., they are less reliable. The filtered data show that students of both countries ranked the most and the least important life goals in a very similar way with minimum deviations detected in the ranking results.

scholarly journals A Planning Tool for Reliability Assessment of Overhead Distribution Lines in Hybrid AC/DC Grids

2021 ◽  
Vol 13 (11) ◽  
pp. 6099
Author(s):  
Giovanna Adinolfi ◽  
Roberto Ciavarella ◽  
Giorgio Graditi ◽  
Antonio Ricca ◽  
Maria Valenti
Keyword(s):  
Reliability Assessment ◽  
Reliability Function ◽  
Climatic Conditions ◽  
Planning Tool ◽  
Grid Resource ◽  
Distribution Lines ◽  
Ac Networks ◽  
Reliability Performance ◽  
Power Dispatching

Integration of DC grids into AC networks will realize hybrid AC/DC grids, a new energetic paradigm which will become widespread in the future due to the increasing availability of DC-based generators, loads and storage systems. Furthermore, the huge connection of intermittent renewable sources to distribution grids could cause security and congestion issues affecting line behaviour and reliability performance. This paper aims to propose a planning tool for congestion forecasting and reliability assessment of overhead distribution lines. The tool inputs consist of a single line diagram of a real or synthetic grid and a set of 24-h forecasting time series concerning climatic conditions and grid resource operative profiles. The developed approach aims to avoid congestions criticalities, taking advantage of optimal active power dispatching among “congestion-nearby resources”. A case study is analysed to validate the implemented control strategy considering a modified IEEE 14-Bus System with introduction of renewables. The tool also implements reliability prediction formulas to calculate an overhead line reliability function in congested and congestions-avoided conditions. A quantitative evaluation underlines the reliability performance achievable after the congestion strategy action.

RT Level vs. Microarchitecture-Level Reliability Assessment: Case Study on ARM(R) Cortex(R)-A9 CPU

2017 ◽  
Author(s):  
Athanasios Chatzidimitriou ◽  
Manolis Kaliorakis ◽  
Dimitris Gizopoulos ◽  
Maurizio Iacaruso ◽  
Mauro Pipponzi ◽  
...  
Keyword(s):  
Reliability Assessment

Perbandingan harga saham, volume transaksi dan return saham sebelum dan sesudah terjadi pandemi covid-19 pada PT Agung Podomoro Land, Tbk

2021 ◽  
Vol 5 (4) ◽  
pp. 720
Author(s):  
Anggun Putri Romadhina ◽  
Eka Kusuma Dewi
Keyword(s):  
Stock Returns ◽  
Stock Prices ◽  
Stock Price ◽  
Research Data ◽  
Paired Sample ◽  
First Case ◽  
Significant Difference ◽  
Before And After ◽  
Stock Transaction

The first Covid-19 case in Indonesia was announced on March 2, 2020. This study aims to determine whether there is a significant difference in stock prices, stock transaction volume and stock returns due to the COVID-19 pandemic (case study at PT. Agung Podomoro Land, Tbk). This research data was taken 90 days before and 90 days after the announcement of the first case of COVID-19 in Indonesia. The data was processed by paired sample t-test, using SPSS version 20. From the results of data processing, it was shown that there was a significant difference in stock prices before and after the announcement of the first case of covid-19 in Indonesia. This is indicated by a significance value of 0.000 < 0.05 where the stock price has decreased compared to before the Covid-19 case. Meanwhile, the volume of stock transactions also showed a significant difference with a significance value of 0.007 <0.05, where the volume of stock transactions after the announcement showed a decrease. Likewise, stock returns show a significant difference with a significance value of 0.025 < 0.05 where stock returns have decreased after the announcement of the first case of covid-10 in Indonesia.  

KEPEMIMPINAN LURAH DALAM PENGELOLAAN BANK SAMPAH DI KELURAHAN RAYA KECAMATAN SINGKEP BARAT KABUPATEN LINGGA PROVINSI KEPULAUAN RIAU

2021 ◽  
pp. 13-27
Author(s):  
Agung Nurrahman ◽  
Gatiningsih Gatiningsih ◽  
Muhammad Tri Syaputra
Keyword(s):  
Environmental Issues ◽  
Research Data ◽  
Community Leaders ◽  
Structured Interviews ◽  
Political Will ◽  
Descriptive Research ◽  
Qualitative Descriptive ◽  
Waste Bank

This research focuses on how leadership has a major role in addressing environmental issues, especially through the garbage bank program as a form of case study. Furthermore, the problems that occur in the midst of society are often rely solely on political will or political desire to solve them. The research is to know and learn Lurah's (head of village) leadership in the management of waste banks specifically. This research is qualitative descriptive research. Data collection techniques through structured interviews, documentation and observations. Researchers conducted an analysis using leadership theory from Yukl, where the theory discusses leadership comprehensively. Researchers only focus on five parts of the concept that are considered relevant, namely: visionary, guidance, affiliative, democratic and communicative concepts. The results of this study based on these dimensions are good enough Lurah (head of village) leadership. But there are several things that are considered able to optimize the running of the program through the role of Lurah (Head of village) leadership, namely: first, involving active knots and community leaders such as MUI, academics to support scientific aspects, and professionals in the field of practical management. Keywords: Leadership, Head of Village, Environmental Issues, Waste Management, Waste Bank  

scholarly journals Evaluating a methodology for assessing the strategic alignment of a mining company recruitment function

2009 ◽  
Vol 7 (1) ◽  
Author(s):  
Adelé Janse van Rensburg ◽  
Gerhard Roodt
Keyword(s):  
Best Practice ◽  
Strategic Alignment ◽  
Research Data ◽  
Focus Group Interviews ◽  
Bottom Line ◽  
Mining Company ◽  
Strategic Objectives ◽  
Emerging Themes ◽  
Group Interviews

In the human capital era, the strategic importance of measurement is unmistakable.  Therefore, the  objective  of  this  study  was  to  qualitatively  evaluate  a  methodology  for  assessing  the strategic alignment of a recruitment function. Persons working in the recruitment best practice community of a mining company were targeted as the case study for this research.  Individual (one-on-one) and focus group interviews were conducted to elicit the research data.  Thematic coding was used to identify the emerging themes from the research data.  The findings indicated that  this methodology can be used effectively  to determine  the alignment of  the  recruitment function with the strategic objectives of the company.  However, the bottom line contribution is still unclear.

scholarly journals Which Technologies Do Pre-Service Teachers Prefer to Use While Presenting Their Teaching Skills and for What Purposes Do They Use These Technologies?

2017 ◽  
Vol 7 (3) ◽  
pp. 103
Author(s):  
Fatma Sasmaz Oren
Keyword(s):  
Science Teachers ◽  
Research Data ◽  
Service Science ◽  
Teaching Skills ◽  
Structured Interviews ◽  
Science Courses ◽  
Use Of Technology ◽  
The Subject

This research aims to determine the technologies that pre-service science teachers prefer to use in micro teaching presentations performed for improving their teaching skills and to determine the purposes of using these technologies. For this purpose, the case study model was used in the research. The research was made with some 48 pre-service science teachers. In the research, data was collected from the presentation files the pre-service science teachers had prepared with respect to the microteaching applications, from the instructor’s observation notes on their presentations, from the view form and from the semi-structured interviews. According to the findings obtained from the research, the pre-service science teachers used computers, projection apparatuses, overhead projectors, videos, animations, simulations and microscopes the most in the microteaching applications. The pre-service science teacher’s expressed that they used technology primarily for reasons such as enhancing the comprehensibility of the subject, concretizing abstract subjects, ensuring visuality and saving time. Considering these results, some recommendations were made regarding the use of technology in science courses.

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