Browsing by Author "Chandrasekara, R"

Now showing 1 - 3 of 3

item: Article-Abstract
Differential effects of employment status on work-related outcomes: A pilot study of permanent and casual workers in Sri Lanka
Wickramasinghe, V; Chandrasekara, R
Purpose – The purpose of this paper is to investigate whether permanent workers with standard employment that is protected, and casual workers with long-term employment that is not protected but performing the same core jobs, along with permanent workers side-by-side in the same work setting, exhibit different work-related outcomes. Design/methodology/approach – Permanent workers and casual workers holding core jobs with long-term employment responded to the survey questionnaire. Logistic regression was used for the data analysis. Findings – Job satisfaction, procedural justice and work performance were found to be important work-related outcomes that discriminate between permanent and casual workers. Originality/value – Although consequences of different employment arrangements would be of interest to many organisations world wide, on the one hand, little empirical research has compared work-related outcomes of permanent workers with casuals (holding the same core functions with long-term employment) or permanent workers with workers in any form of nonstandard employment arrangement. On the other hand, the literature on the use of labour flexibility strategies is mainly concentrated on developed market economies. If organisations use casual workers alongside permanent workers in core jobs, there is a need for examining implications of such practices. The findings of this study establish baseline data that would be a source of general guidance in stimulating future research in this area.
item: Conference-Abstract
Sensing line-of-sight obstructions in a multipath radio environment
(2011) Chandrasekara, R; Wijesinghe, L; Siriwardena, P; Sampath, JPK; Edirisinghe, R; Dias, D
The paper presents the development and the experimental verification of a technique for the identification of obstructions in the line-of-sight path between two or more radio transceivers in a multipath radio environment. The objective of this technique is to use RSS measurements from a mesh of simple sensor nodes to identify intrusions.
item: Article-Abstract
Wi-alert : a wireless sensor network based intrusion alert prototype for HEC
(2015-09-01) Edirisinghe, R; Dias, SAD; Chandrasekara, R; Wijesinghe, L; Siriwardena, P; Sampath, PK
A wired fence based intrusion detection and alerting mechanism for boundaries separating wildlife habitats and human settlements was implemented, particularly as a solution to the Human-Elephant Conflict (HEC). The objective of the research reported in this paper is to propose and verify an alternative technique for this wired fence based alerting mechanism to overcome its limitations and to improve its effectiveness. This article presents a comprehensive study of alternative solutions with deliberate consideration of the practical constraints. Wi-Alert is a wireless sensor network based intrusion detection system proposed as the best alternative solution. This article reports the outcomes of the first two phases of ongoing developments of Wi-Alert. The first phase of experiments was conducted to investigate the multi-path effect reduction techniques at one site. In the next phase, experiments were conducted to verify the ability to detect elephants. The results obtained via the candidate techniques are compared. Both experiments confirm the feasibility of the prototype as a non-invasive method to detect elephants.