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A Database Querying Language for Formulating Relational Queries on Small Devices

Computer Technology and Application 2011年第3期2卷 172-181页

作者： Ahmad Rohiza abdul-kareem sameem Department of Computer and Information Sciences Universiti Teknologi PETRONAS 31750 Tronoh Malaysia Faculty of Computer Science and Information Technology University of Malaya 50603 Kuala Lumpur Malaysia

For small devices like the PDAs and mobile phones, formulation of relational database queries is not as simple as using conventional devices such as the personal computers and laptops. Due to the restricted size and resources of these smaller devices, current works mostly limit the queries that can be posed by users by having them predetermined by the developers. This limits the capability of these devices in supporting robust queries. Hence, this paper proposes a universal relation based database querying language which is targeted for small devices. The language allows formulation of relational database queries that uses minimal query terms. The formulation of the language and its structure will be described and usability test results will be presented to support the effectiveness of the language.

关键词： Database query language relational queries small devices.

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An automatic subdigraph renovation plan for failure recovery of composite semantic Web services

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Frontiers of Computer Science 2013年第6期7卷 894-913页

作者： Hadi SABOOHI sameem abdul kareem Department of Artificial Intelligence Faculty of Computer Science and Information Technology University of Malaya Kuala Lumpur 50603 Malaysia

A Web service-based system never fulfills a user＇s goal unless a failure recovery approach exists. It is inevitable that several Web services may either perish or fail before or during transactions. The completion of a composite process relies on the smooth execution of all constituent Web services. A mediator acts as an intermediary between providers and consumers to monitor the execution of these services. If a service fails, the mediator has to recover the whole composite process or else jeopardize achieving the intended goals. The atomic replacement of a perished Web service usually does not apply because the process of locating a matched Web service is unreliable. Even the system cannot depend on the replacement of the dead service with a com- posite service. In this paper, we propose an automatic renova- tion plan for failure recovery of composite semantic services based on an approach of subdigraph replacement. A replacement subdigraph is posed in lieu of an original subdigraph, which includes the failed service. The replacement is done in two separate phases, ofltine and online, to make the recovery faster. The ofitine phase foresees all possible subdigraphs, pre-calculates them, and ranks several possible replacements. The online phase compensates the unwanted effects and executes the replacement subdigraph in lieu of the original subdigraph. We have evaluated our approach during an experiment and have found that we could recover more than half of the simulated failures. These achievements show a significant improvement compared to current approaches

关键词： semantic Web service composite services fail- ure recovery subdigraph replacement

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Does music reduce anxiety and discomfort during flexible sigmoidoscopy?A systematic review and meta-analysis

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World Journal of Gastrointestinal Endoscopy 2017年第5期9卷 228-237页

作者： Arun P Shanmuganandan Muhammad R sameem Siddiqui Nicholas Farkas Kiran Sran Rhys Thomas Said Mohamed Robert I Swift Al Mutaz Abulafi Department of Colorectal Surgery Croydon University Hospital Department of Surgery Royal Free Hospital

To investigate the role of music in reducing anxiety and discomfort during flexible sigmoidoscopy. METHODSA systematic review of all comparative studies up to November 2016, without language restriction that were identified from MEDLINE and the Cochrane Controlled Trials Register (1960-2016), and EMBASE (1991-2016). Further searches were performed using the bibliographies of articles and abstracts from major conferences such as the ESCP, NCRI, ASGBI and ASCRS. MeSH and text word terms used included “sigmoidoscopy”, “music” and “endoscopy” and “anxiety”. All comparative studies reporting on the effect of music on anxiety or pain during flexible sigmoidoscopy, in adults, were included. Outcome data was extracted by 2 authors independently using outcome measures defined a priori. Quality assessment was performed. RESULTSA total of 4 articles published between 1994 and 2010, fulfilled the selection criteria. Data were extracted and analysed using OpenMetaAnalyst. Patients who listened to music during their flexible sigmoidoscopy had less anxiety compared to control groups [Random effects; SMD: 0.851 (0.467, 1.235), S.E = 0.196, P 2 = 0). Patients who listened to music during their flexible sigmoidoscopy had less pain compared to those who did not, but this difference did not reach statistical significance [Random effects; SMD: 0.345 (-0.014, 0.705), S.E = 0.183, P = 0.06]. Patients who listened to music during their flexible sigmoidoscopy felt it was a useful intervention, compared to those who did not (P 2 = 0). CONCLUSIONMusic appeared to benefit patients undergoing flexible sigmoidoscopies in relation to anxiety and was deemed a helpful intervention. Pain may also be reduced however further investigation is required to ascertain this.

关键词： Music Flexible sigmoidoscopy Anxiety Discomfort Screening

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