Empirical Research on Computer Assisted Risk Measurement Method Statistics and Securities Investment Portfolio Model

2021 ◽  
Author(s):  
Guanglei Zhao ◽  
Yuhuan Shi
Keyword(s):  
Empirical Research ◽  
Measurement Method ◽  
Risk Measurement ◽  
Computer Assisted ◽  
Investment Portfolio ◽  
Securities Investment

scholarly journals Effect of Computer Multimedia Assisted Word Annotation on Incidental Vocabulary Acquisition of English Reading

2019 ◽  
Vol 14 (13) ◽  
pp. 21
Author(s):  
Mengqing Han ◽  
Shanshan Niu
Keyword(s):  
Empirical Research ◽  
Vocabulary Acquisition ◽  
Experimental Result ◽  
Computer Assisted ◽  
Positive Role ◽  
Multimedia Annotation ◽  
English Reading ◽  
Incidental Vocabulary ◽  
Incidental Vocabulary Acquisition ◽  
Research Experiment

This paper aims at researching the effect of computer multimedia assisted word annotation on incidental vocabulary acquisition of English reading of Chinese students. An empirical research experiment is designed based on the ideas of word annotation, incidental vocabulary acquisition, multimedia annotation, and so on. Through analyzing, three main problems are put forward in this paper. In the empirical experiment, two variables of different annotation modes and subjects’ English levels are designed and immediate test and delayed test are adopted. By selecting suitable test subjects, test materials and test tool, an empirical research has been conducted and the corresponding conclusions have been drawn. The re-search takes the effect of individual English level differences on incidental vocabulary acquisition of English reading and the experimental result play a positive role in the selection of suitable computer assisted annotation modes for students of different English levels.

scholarly journals Discrete approximate iterative method for fuzzy investment portfolio based on transaction cost threshold constraint

Open Physics ◽  
2019 ◽  
Vol 17 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Manwen Tian ◽  
Shurong Yan ◽  
Xiaoxiao Tian
Keyword(s):  
Empirical Research ◽  
Dynamic Optimization ◽  
Optimization Model ◽  
Path Dependence ◽  
Stock Exchange ◽  
Linear Convergence ◽  
Threshold Value ◽  
Investment Strategy ◽  
Investment Portfolio ◽  
Absolute Deviation

Abstract There are many non-probability factors affecting financial markets and the return on risk assets is fuzzy and uncertain. The authors propose new risk measurement methods to describe or measure the real investment risks. Currently many scholars are studying fuzzy asset portfolios. Based on previous research and in view of the threshold value constraint and entropy constraint of transaction costs and transaction volume, the multiple-period mean value -mean absolute deviation investment portfolio optimization model was proposed on a trial basis. This model focuses on a dynamic optimization problem with path dependence; solving using the discrete approximate iteration method certifies the algorithm is convergent. Upon the empirical research on 30 weighted stocks selected from Shanghai Stock Exchange and Shenzhen Stock Exchange, a multi-period investment portfolio optimum strategy was designed. Through the empirical research, it can be found that the multi-period investments dynamic optimization model has linear convergence and is more effective. This is of great value for investors to develop a multi-stage fuzzy portfolio investment strategy.

scholarly journals M‑communication in Product Information Exchange – an International Comparison

2018 ◽  
Vol 2 (334) ◽  
Author(s):  
Małgorzata Bartosik-Purgat
Keyword(s):  
Mobile Devices ◽  
Empirical Research ◽  
Social Networking Sites ◽  
Information Exchange ◽  
Product Information ◽  
Computer Mediated Communication ◽  
Research Problem ◽  
The United States ◽  
Computer Assisted ◽  
Literature Study

The main objective of the paper is to identify the degree to which Social Networking Sites (SNSs) are used in communication related to gathering information about products via mobile devices (mobile communication). The research problem is presented in the context of Computer Mediated Communication theory (CMC). In the realisation of the main purpose of this paper, an attempt has been made to answer two research questions: firstly, is there a relationship between types of products and the frequency of gathering and conveying information about them via SNSs? Secondly, what role do mobile devices play in this communication? A comprehensive literature study has been complemented with an empirical research, conducted in four countries – China, Poland, the United States and Turkey. Two research methods: PAPI (Paper and Pen Personal Interview) and CAWI (Computer Assisted Web Interview) were used in the empirical research. The research showed a significant use of mobile devices (i.e. smartphones and tablets) in communication (gathering and conveying information about products) via SNSs, especially in relation to products such as electronic devices as well as clothes and footwear.

scholarly journals Marketingowe determinanty wprowadzania na rynek nowych produktów w przedsiębiorstwach sektora zbożowego

2015 ◽  
pp. 43-60
Author(s):  
Hanna Górska-Warsewicz ◽  
Monika Świątkowska
Keyword(s):  
Empirical Research ◽  
New Products ◽  
Point Of View ◽  
Medium Size ◽  
Computer Assisted ◽  
Small Companies ◽  
Development Fund ◽  
Telephone Interviews ◽  
European Regional Development Fund ◽  
European Regional

The aim of this study was to analyze selected marketing conditions of introducing new products into market in cereals sector companies. Special attention was given to promotional and branding activities. Empirical research was conducted via computer assisted telephone interviews in project POIG.01-14-041/12 of European Regional Development Fund. The research sample of 200 companies was selected due to the size of companies: 20% of the sample were micro-companies, 30% small companies, 30% medium size companies, and 20% large companies. This study refers to the data concerning the marketing determinants of new products development and introduction into market in the cereals sector. Introducing new products concerned mostly bread and the like – 90% of the companies stated so. The highest expected effectiveness of promotional activities was noticed in the case of advertising in purchasing places, price promotion and degustation. The brand was the most important from the point of view of maintaining consumers, company development, improving sales, as well as possibilities of gaining new consumers.

PENGUKURAN RISIKO PORTFOLIO DENGAN MENGGUNAKAN METODE VALUE AT RISK (VAR)

2013 ◽  
Author(s):  
Fajri Adrianto ◽  
Laela Susdiani
Keyword(s):  
At Risk ◽  
Value At Risk ◽  
Measurement Method ◽  
Simulation Method ◽  
Risk Measurement ◽  
Portfolio Risk ◽  
Historical Simulation ◽  
Stock Investment ◽  
Risk Investment

Value at Risk (VAR) is a risk measurement method that use in risk investment calculation. VAR shows risk in nominal. This research calculate risk portfolio of stock using VAR method and measure whether VAR value overvalued or underestimated. Using historical simulation method is found VAR value tend to decrease when stock investment consist more stocks in the portfolio. Risk investment calculation consistent with standar devistion as risk measurement, which the more investment diversified the less the risk in the investment. Then, using backtesting reveal that VAR tend too high in portfolio consisting small number of stocks. VAR value can accepted in the portfolio that consist many stocks or the more investment diversified the more accurate VAR value as risk measurement.

Precision and Reliability of the T-Scan III System

2020 ◽  
pp. 100-128
Author(s):  
Bernd Koos, DMD
Keyword(s):  
Measurement Method ◽  
Sequence Data ◽  
Timing Analysis ◽  
Computer Assisted ◽  
High Definition ◽  
Occlusal Force ◽  
Occlusal Contact ◽  
Precise Analysis ◽  
Computer Based ◽  
Assisted Analysis

Precise analysis of occlusal contacts and occlusal force is a problem in functional diagnostics that has not yet been satisfactorily resolved, despite the fact that the deleterious consequences of an unbalanced occlusion are widespread, and can be severe. In clinical practice, the present-day analysis of the occlusion is reduced to depicting force with color-marking foils that leave ink marks upon the teeth. However, these foils only indicate the localization of contacts, but do not describe reliably the occlusal force relationships. Precise analysis that incorporates time resolution, and plots the distribution of forces within the occlusion, is not possible when employing the traditional occlusal indicator methods. A detailed occlusal force and timing analysis can only be provided by performing a computer-assisted analysis, using the T-Scan III system (Tekscan, Inc. S. Boston, MA, USA), which records changing relative occlusal force levels and real-time occlusal contact sequence data, with high definition (HD) recording sensors. The following chapter demonstrates the accuracy and reliability of this computer-based occlusal measurement method that reliably describes the time-dependent distribution of occlusal force evolution.

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