Financial statement analysis

Purpose The Chinese Telecoms Industry has been rapidly growing over the years since 2001. An analysis of financial performance of the three giants in this industry is very important. However, it is difficult to know how many ratios can be used best with little information loss. The paper aims to discuss this issue. Design/methodology/approach A total of 18 financial ratios were calculated based on the financial statements for three companies, namely, China Mobile, China Unicom and China Telecom for a period of 17 years. A principal component analysis was run to come up with variables with significance value above 0.5 from each component. Findings At the end, the authors conclude how financial performance can be analysed using 12 ratios instead of the costly analysis of too many ratios that may be complex to interpret. The results also showed that ratios are all related as they come from the same statements, hence, the authors can use a few to represent the rest with limited loss of information. Originality/value This study will help different stakeholders who are interested in the financial performance of each company by giving them a shorter way to analyse performance. It will also assist those who do financial reporting on picking the ratios which matter in reflecting the performance of their companies. The use of PCA gives unbiased ratios that are most significant in assessing performance.

Big Data en China

El sector del Big Data en China está creciendo a gran velocidad impulsado por los agentes públicos y privados que lo consideran esencial para la transformación del país en una potencia tecnológica mundial. China cuenta con un entorno privilegiado para el desarrollo del Big Data debido a su volumen de datos, aceptación social y flexibilidad legal, siendo los sectores de mayor aplicación el sanitario, transporte, seguridad, retail, turismo, smart cities, fintech, e incluso un sistema de crédito social para la población. Las empresas españolas pueden encontrar oportunidades de colaboración en materia de formación, desarrollo tecnológico o aplicación de sus productos a un mercado con más de 730 millones de usuarios digitales. Un ejemplo de éxito es el proyecto conjunto de geolocalización entre Telefónica (tecnología) y China Unicom (datos).

Planning and Application of Analyzing and Decision Support System

In this paper, the planning and application of analyzing and decision support system at China Unicom Zhongshan are introduced. It also introduces the comprehensive DSS, decision support system, which composed of data warehouse and OLAP, data mine, and some important new technologies.

A Multiband Monopole Antenna with the Inverted-Trapezoidal CPW Feeding

A multi-band monopole antenna with the improved inverted-trapezoidal coplanar waveguide (CPW) feeding is presented. The antenna has a simple planar structure, and occupies an area of 15 mm × 50 mm. The proposed antenna consists of an improved inverted-trapezoidal CPW-fed patch, and a series of monopole strips with different length. This monopole antenna utilizes the advantages of the CPW feeding to simplify the structure of the antenna into a single metallic level and achieve high antenna gain. The improved inverted-trapezoidal CPW-fed patch and a meander shorting strip lead to a better impedance matching result and multi-band operation. The experimental results of the proposed antenna are shown and discussed. The antenna generates two wide bands centered at about 900 and 2200 MHz to cover the GSM850/GSM900/DCS/PCS/UMTS/LTE2300/2500 bands and the 2.4 GHz WLAN operation. Meanwhile the antenna covers the 4 G bands of China Telecom (2370–2390 MHz/2635–2655 MHz), China Unicom (2300–2320 MHz/2555–2575 MHz) and China Mobile (1880–1900 MHz/2320–2370 MHz/2575–2635 MHz), too.