Search results

This article describes the management of an A$20.5 million three‐year capital‐works program to develop and support radio communications for Australia's New South Wales Police Service.

Draws on information provided by the project manager.

Shows that, because of the vast area, the distances involved and remoteness of some of the sites, it was decided to use the existing human resources in a virtual‐team environment. Describes the establishment and operation, benefits and limitations of using a virtual project team, in addition to explaining how a benefit‐management plan was developed to provide a structured way to demonstrate achievements.

Concludes that virtual teams are cost‐effective, but managing them requires skills over and above the management of co‐located project teams.

Contains plenty to interest anyone involved in managing a large project, covering a wide geographical area.

Electromagnetic interference (EMI) on communication systems of unban rail transit can hardly be clarified because of complicated factors around railways. This paper aims to target this issue and extend experimental and theoretical analysis.

This paper take the Nanjing Dashengguan Bridge as an example, because it carries the most tracks in the world and bears three kinds of trains running through, providing a perfect complex environment. First, it investigates the three communication systems, terrestrial trunked radio, communications-based train control (CBTC) and passenger information system (PIS) that Nanjing Metro uses, and select appropriate devices accordingly. Second, it establishes a system level platform and conduct three tests to analyze their respective operating principles and performance difference under common electromagnetic environments. Third, it adopts theoretical formula to verify test results.

The experiment results and theoretical analysis mutually corroborate each other and present practical recommendations: an 8 m or more distance between two tracks will ensure no obvious EMI created by a passing train on communication systems; two certain communication systems should not share the same frequency band; interference level is more related to field strength than weathers and building materials; and CBTC DSSS waveguide mode as well as PIS LTE mode are preferred.

This research also provides a practical method of investigating EMI for other complex situations.

One of the enabling factors of effective supply‐chain management is the effective use of information technology (IT). Highlights a number of IT trends which can be grouped together as four key themes. These four key themes affect the way in which technology is used to support logistics operations in order to deliver competitive advantage. Shows how some of these themes have been developed and utilized to provide an in‐cab computing system which delivers competitive advantage to Exel Logistics. Concludes by showing how the four themes will support future trends in logistics.

This paper provides a brief historical sketch of cable and telephone regulation in the USA, the purpose of which is to demonstrate the legacy that precedes contemporary debates over competing models of digital networks, and to question the justifications offered for regulating such networks as private property with no corresponding public service obligations.

The paper relies on historical research to examine the rationales that have been used for cable and telephone regulation, based on the use of legal documents (statutes, regulations, court rulings).

The historic justifications that have been used to protect telecommunications from competition amounts to what is known as “corporate welfare”. Today's cable and telephone networks, and the accumulated wealth of the corporations that own them, would not have been possible without the willingness of regulators to favor particular firms and business models, and to protect these firms from competition under the rationale that these networks are “natural monopolies”.

Today's digital networks have been built on the wealth and market dominance that was made possible by protection from competition and the guaranteed rates of return that regulation permitted. Consequently, the property rights that have been afforded to network owners should be accompanied by responsibilities, namely, in the form of public service obligations.

Cartago City is located in the central valley of Costa Rica. Situated at the southern foot of the Irazu volcano and characterized by rugged mountainous topography, the city in general is exposed to multiple natural hazards including floods, volcanic eruption, and pyroclastic flows. Indeed, the city has experienced catastrophes in 1724, 1861, 1891, 1928, and 1951. The most recent one was a combination of pyroclastic flows and several floods in 1963–1964. This catastrophe caused US$3.5 million of economic damage as well as 20 deaths (ICE, 1966).

Over the past few years, considerable attention has been focused on the implementation and usage of quality improvement and related techniques to the service industry. Reports on an ongoing project to implement a quality maintenance system (QMS) in a military maintenance organization. Total quality management (TQM) concepts are applied as a management tool to improve the quality of maintenance services. Identifies and analyses the nature of the maintenance problem and its causes using data collected over 12 months. Finds that the low serviceability rate of vehicles needs to be improved. Indicates that TQM concepts can be applied effectively to maintenance services. Although the impact of the QMS has not been fully felt, employee participation, education and supervision surfaced as critical success factors during this stage of the implementation process.

The purpose of this paper is to identify selected tools of external public relations (PR) employed by the public media in the area of corporate social responsibility (CSR) and to exemplify them with the activities of Radio Gdańsk in the years 2012-2015.

The opening section of the work is based on studies of the desk research type, i.e. analysis of the literature and industry data, plus exploration of the Radio Gdańsk website. The core part of the work was compiled based on primary research conducted under the quality method – a direct unstructured telephone interview held with a member of the Radio Gdańsk Supervisory Board. The interview concerned the activities of Radio Gdańsk in the years 2012-2015. The information acquired via telephone surveys has been supplemented with more written sources. The sources contained some detailed data without which the analysis of the subject matter would not have been possible. The authors of this study maintain that not only have the data acquired made the analysis possible but also that the paper ought to be treated only as a preliminary study with some interesting findings and a starting point for further analyses.

Reaching for actions of the CSR area carries tangible benefits also to the public media which consolidate their competitive edge thanks to the positive image of a socially engaged enterprise. Thus, using CSR tools, the public media are setting a model of a kind for others. Analysis of the Radio Gdańsk activity areas reveals that the broadcasters successfully employ the selected tools of external communication (external PR) which enable them to put in flesh the postulates of CSR and effectively create their image of a sensitive and socially engaged institution.

This study is based on an analysis of one of a dozen public radio stations and it has some interesting findings, which may be a starting point for further research into the subject. However, it gives the authors no answer as to whether other public media outlets in Poland implement CSR strategies, and what tools they apply in this respect. The authors think that the phenomenon deserves comprehensive and thorough research, which would help us broaden our knowledge of the problem. Yet another interesting aspect of the study, which is mentioned in the introduction, is the question whether (and if so – to what extent) the public media outlets implement CSR policies as part of their market strategy. The policies may after all be merely some intuitive attempts resulting from the general mission of such entities and unstable market situation, and in such cases the noble goals of CSR may be achieved solely by accident.

Using CSR tools, the public media are setting a model of a kind for others (i.e. commercial firms).

The assumptions of a CSR strategy can be found reflected in public media operations and become an action model of a kind for the management of commercial firms.

Wireless communication channel provides a wide area of applications in the field of communication, distributed sensor network and so on. The prominence of the wireless communication channel is because of its robust nature and the sustainability for the precise ranging and the localization. The precision and accuracy of the wireless communication channel largely depend on the localization. The development of the wireless communication channel with improved benefits needs the accurate channel model.

This paper characterizes the tangential path loss model in the WINNER based wireless communication channel model. The measurements taken in the WINNER channel model are compared with the tangential path loss characterized WINNER Channel model.

The model operates well over the varying antenna orientations, measurement condition and the propagation condition. The proposed tangential path loss model is performing well over the various outdoor scenarios.

The proposed characterization shows change in the small-scale parameters (SSP), such as power, delay, angle of arrival and angle of departure as well as the large-scale parameters (LSP), such as RMS delay spread, shadowing, path loss and Ricean factor associated with the model.

This paper aims to report an investigation into the benefits and limitations of radio to communicate agricultural information to peasant farmers, and how it can be successfully incorporated into agricultural extension service programs in Zimbabwe.

Quantitative and qualitative research techniques were applied to gather, analyze and interpret data. A total of 25 semi‐structured interviews were conducted with peasant farmers in Ward 16 of the Buhera South Constituency, and four in‐depth interviews were conducted with key informants in agricultural extension and radio services.

Extension service programs do not satisfy the agricultural information needs of peasant farmers because: there are not enough extension workers; they do not have the means of transport to reach all households; they lack the communication skills to interact effectively with the peasant farmers; and they lack the motivation to carry out their work. A community radio service was the most preferred medium of communication for rural peasant farmers. The farming radio programs are relevant to their agricultural activities, their language and accents are used, and they can contribute to the program content.

The study proposes a suitable model for communicating agricultural information effectively to the peasant farmers. The model elaborates how the community radio service should be set up, what the important components are, and how the community radio service can be incorporated into extension service programs.