http://dr.lib.sjp.ac.lk/handle/123456789/11009 Fri, 24 Apr 2026 00:44:51 GMT 2026-04-24T00:44:51Z http://dr.lib.sjp.ac.lk/handle/123456789/11018 Health Care Workers’ Use of Electronic Hospital Information System and Their Computer Literacy at the Outpatient Department in District General Hospital Trincomalee in Sri Lanka Jayawardena, D.B.A.S.; Wickramasinghe, S.C.; Wimalaratne, S.R.U. Objectives: To describe the use of Electronic Hospital Information System (EHIS) by the staff, to assess the competency of them to handle the EHIS and to assess the computer literacy among health care workers at the Out Patient’s Department(OPD) in District General Hospital (DGH) Trincomalee. Study design: A cross sectional descriptive study. A competency assessment test and a self administered questionnaire were used. Participants: All the staff members operating the EHIS at the OPD in DGH Trincomalee. Results: Regarding the general use of the EHIS medical officers (100%) used the EHIS to write prescriptions,(>70%)to get the patient’s socio-demographic details, enter patient’s history to retrieve previous medical records, to obtain what drugs available and what drugs out of stock at the outdoor pharmacy, for notification of diseases and used less frequently to get the laboratory reports (50-70%). The system was used for 17 tasks out of 20 tasks and most unused tasks were writing the diagnosis according to the ICD-10. Nurses and attendants used the system less than half of the tasks for which the system was functional. The pharmacists use of the system was optimal. Overall respondents’ competency of using the system was high (>80%). Conclusions: Majority of staff members had low level of computer literacy. Majority of them used the system successfully. Recommendations: To strengthen the training program, combat several constraints and upgrade the system, provide digital X-ray imaging and download them to CDs and improved to write the diagnosis according to the ICD-10. Fri, 01 Jan 2016 00:00:00 GMT http://dr.lib.sjp.ac.lk/handle/123456789/11018 2016-01-01T00:00:00Z http://dr.lib.sjp.ac.lk/handle/123456789/11017 Angle-Aware Greedy Forwarding Algorithm for Vehicular Ad Hoc Networks Minn, A.Z.; Zin Oo, M. Greedy Perimeter Stateless Routing (GPSR) gives good forwarding nodes for Mobile Ad Hoc Networks (MANET) but does not provide the right directional forwarding nodes in Vehicular Ad Hoc Network (VANET). This is the fact that MANET uses the nodes without limitations in moving but VANET uses fixed infrastructure in mobility such as roads with lanes. The key of original greedy forwarding is to choose the forwarding node with the shortest distance between the source and the destination. As it does not consider the direction of the forwarding nodes, it wrongly selects a forwarding node, which is going in the opposite direction from the destination. Thus, This paper tries to improve the greedy forwarding method, called angle-aware greedy forwarding algorithm of GPSR by taking into considerations in both the distance and the direction. Moreover, it shows the mystery of angle that gives the right direction. The optimized GPSR (OGPSR) using angle-aware greedy forwarding provides the better throughput, average end-to-end delay and routing overheads than the original GPSR. Fri, 01 Jan 2016 00:00:00 GMT http://dr.lib.sjp.ac.lk/handle/123456789/11017 2016-01-01T00:00:00Z http://dr.lib.sjp.ac.lk/handle/123456789/11016 A Novel Text Steganographic Technique Using Specific Alphabets Htet, M.; Phyo, S.W. In today’s electronic era, wealth of electronic information are being accessed over the Internet. Several important information and private data transferring over the Internet are being hacked by attackers via latest communication technologies and as such, maintaining the security of secret data has been a great challenge. To tackle the security issue, cryptographic methods as well as steganographic techniques are essential. This paper focuses on hybrid security system using cryptographic algorithm and text steganographic technique to achieve a more robust security system. In this work, to overcome the limited data hiding capacity, suspiciousness, and data damaging effect due to modification of traditional steganographic techniques, a new technique for information hiding in text file is proposed. The proposed approach conceals a message, without degrading cover, by using the first, second, second last, and last letter of words of the cover text. Hence, from the embedding capacity point of view, its capacity depends on the similarity of characters of the words in cover text. In addition, as a further improvement for security, secret message encryption is performed using the Blowfish algorithm before hiding into the innocuous cover text. Fri, 01 Jan 2016 00:00:00 GMT http://dr.lib.sjp.ac.lk/handle/123456789/11016 2016-01-01T00:00:00Z