A forecasting of stock trading price using time series information based on big data

Big data is a large set of structured or unstructured data that can collect, store, manage, and analyze data with existing database management tools. And it means the technique of extracting value from these data and interpreting the results. Big data has three characteristics: The size of existing data and other data (volume), the speed of data generation (velocity), and the variety of information forms (variety). The time series data are obtained by collecting and recording the data generated in accordance with the flow of time. If the analysis of these time series data, found the characteristics of the data implies that feature helps to understand and analyze time series data. The concept of distance is the simplest and the most obvious in dealing with the similarities between objects. The commonly used and widely known method for measuring distance is the Euclidean distance. This study is the result of analyzing the similarity of stock price flow using 793,800 closing prices of 1,323 companies in Korea. Visual studio and Excel presented calculate the Euclidean distance using an analysis tool. We selected “000100” as a target domestic company and prepared for big data analysis. As a result of the analysis, the shortest Euclidean distance is the code “143860” company, and the calculated value is “11.147”. Therefore, based on the results of the analysis, the limitations of the study and theoretical implications are suggested

Efficiency of railway management

Basically, the railroad network is a national asset that could be used to reduce the costs of transportation.The paper has two aims which the first is to describe the efficiency improvements that the railroad industry itself has made.The second is to describe the role that rail network could play in a more efficient overall national transportation system.The paper uses a secondary data or quantitative grounded theory research methods to investigate the efficiency of Malaysia’s railways since quantitative way are more naturalistic.Author found that there was substantial inefficiency in the industry with no sign of reduction over time.Author’s main conclusion is that principal agent problems were pervasive in railway management.Research results suggest that private ownership in the railway industry can promote efficiency and should be supported by competition for franchises and price-capping regulation as well.There are two formal economic aspects of efficiency.Productive efficiency occurs when an economy cannot produce more of one good or service without producing less of another.It generally occurs when firms produce at minimum average total cost.Allocate efficiency occurs when the economy cannot raise one consumer’s satisfaction without lowering another’s.It occurs when price signals to consumers are based on marginal costs. The focus of research is on techniques of improving rail network performance.Author is concerned with the productive efficiency of railroad firms.Author is asking what needs to be done to enable railroads to provide service at the minimum average cost that is technologically possible.The allocate efficiency of the transportation system within which railroads operate is also important

VALIDATION OF OPTIMALLY DESIGNED STATOR-PROPELLER SYSTEM BY EFD AND CFD

The development of energy-saving devices to lower the energy efficiency design index (EEDI) of ships has been actively researched worldwide. One such device is an asymmetric pre-swirl stator, which helps to improve the propulsion efficiency by recovering the rotational energy generated during propeller rotation. Determining the pitch angle is the most important factor in the design of an efficient asymmetric pre-swirl stator. To optimize the pitch angle of an asymmetric pre-swirl stator, this study deals with potential-flow, computational fluid dynamics, and model tests. The model delivered power at a design speed of 24 kt was compared by changing the pitch angle by ±2° with respect to the reference angle designed using a potential-flow program. The commercial code Star-CCM+ was used for the numerical analysis, and the model was also tested in a towing tank at Pusan National University. This study proposes an effective method for determining and verifying the optimal pitch angle of an asymmetric pre-swirl stator

Total Laparoscopic Hysterectomy and Laparoscopy-Assisted Vaginal Hysterectomy

This study suggests that total laparoscopic hysterectomy and laparoscopic-assisted vaginal hysterectomy are safe and feasible with laparoscopic-assisted hysterectomy preferred in patients with a mass involving the lower uterine segment or those with a large uterus

Diversity and Inclusion in Academia: Does AIS Have a Problem?

Academia has suffered from a lack of diversity and inclusiveness over its long history. It is only in recent years that underrepresentation among faculty and students has started to receive attention and remediation. This panel will explore the presence of underrepresentation among our colleagues within the Association for Information Systems, the Information Systems academic discipline, and academia more broadly. We draw on personal experience and published research to depict the extent of underrepresentation based upon the gender and race/ethnicity of community members. We discuss current efforts to include underrepresented members and propose ideas for improving and benefiting from a more diverse and inclusive community

Valuation of Credit Derivatives with Multiple Time Scales in the Intensity Model

We propose approximate solutions for pricing zero-coupon defaultable bonds, credit default swap rates, and bond options based on the averaging principle of stochastic differential equations. We consider the intensity-based defaultable bond, where the volatility of the default intensity is driven by multiple time scales. Small corrections are computed using regular and singular perturbations to the intensity of default. The effectiveness of these corrections is tested on the bond price and yield curve by investigating the behavior of the time scales with respect to the relevant parameters

수신 상관정보를 이용한 상향링크 셀룰러 시스템에서의 사용자 스케줄링에 관한 연구

In this paper, we consider multi-user scheduling to maximize the ergodic capacity near the cell boundary in the uplink of cellular systems. The base station (BS) determines a user pair that can minimize the interference from other cells by exploiting the receive correlation matrices of users from adjacent BSs. The performance of the proposed scheme is verified by computer simulation. Simulation results show that the proposed multi-cell scheduling significantly increase the ergodic capacity near the cell boundary compared to conventional random user scheduling, particularly in highly correlated channel environments

상향링크 셀룰러 시스템에서 채널 상관 기반의 협력 사용자 스케줄링 기법

In this paper, we consider multi-user scheduling to avoid other cell interference (OCI) in the uplink of cellular systems. The base station (BS) determines a user group that can minimize the interference from other cells by exploiting the spatial correlation matrix of users from adjacent BSs. The proposed scheme is applicable to multi-input multi-output (MIMO) as well as single-input multi-output (SIMO) environments by applying an eigen-beamforming technique, enabling the use of flexible antenna structures at the transmitter. Simulation results show that the proposed multi-cell scheduling significantly increase the ergodic capacity by avoiding the OCI compared to conventional scheduling schemes, particularly in high mobility and highly correlated channel environments.Seoul R&BD Progra

Reliability Verification of the Performance Evaluation of Multiphase Pump

The crude oil in an oil well exists in various phases such as gas, seawater, and sand, as well as oil. Therefore, a phase separator is needed at the front of a single-phase pump for pressurization and transfer. On the other hand, the application of a multiphase pump can provide such advantages as simplification of the equipment structure and cost savings, because there is no need for a phase separation process. Therefore, the crude oil transfer method using a multiphase pump is being applied to recently developed oil wells. Due to this increase in demand, technical demands for the development of multiphase pumps are sharply increasing, but the progress of research into related technologies is insufficient, due to the nature of multiphase pumps that require high levels of skills. This study was conducted to verify the reliability of pump performance evaluation using numerical analysis, which is the basis of the development of a multiphase pump. For this study, a model was designed by selecting the specifications of the pump under study. The performance of the designed model was evaluated through numerical analysis and experiment, and the results of the performance evaluation were compared to verify the reliability of the result using numerical analysis