ICT for Library and Information Professionals: A Training Package for Developing Countries (ICTLIP) edited by Andrew Large, McGill University, and published by the Information and Informatics Unit, UNESCO Bangkok, Thailand, consists of 6 modules, namely, Module 1: Introduction to information and communication technologies; Module 2: Introduction to integrated library systems; Module 3: Information seeking in an electronic environment; Module 4: Database design, and information storage and retrieval; Module 5: The Internet as an information resource; and Module 6: Web page concept and design: getting a web site up and running. This is Module 4 Database design, and information storage and retrieval (Teacher's Guide) by Deepali Talagala. Module 4 concerns the concepts of database designing using WinISIS, and the storage and retrieval of information. By the end of the Module, students should: * Be able to use the basic features of WinISIS *Be able to identify the principles of database designing *Be able to design and use a sample database *Understand the technological features *Know how to use

Στην παρούσα διπλωματική εργασία παρουσιάζονται μέθοδοι και εργαλεία προεπεξεργασίας και ανάκτησης πληροφορίας συλλογών κειμένου. Το σύνολο των μεθόδων αυτών στηρίζονται στο μοντέλο Διανυσματικού Χώρου και χρησιμοποιούν στον πυρήνα τους αλγορίθμους από την περιοχή της Υπολογιστικής Γραμμικής Άλγεβρας. Πιο συγκεκριμένα, στην παρούσα εργασία παρουσιάζεται αρχικά το εργαλείο λογισμικού Text to Matrix Generator (TMG), για την κατασκευή μητρώων όρων-κειμένων από συλλογές κειμένου, που είναι γραμμένο εξ / We consider algorithms and tools for text preprocessing and information retrieval. All these algorithms are based on the Vector Space Model and use as kernel Computational Linear Algebra algorithms. In particular, we present the text preprocessing software tool Text to Matrix Generator (TMG), that can be used for the construction of term-document matrices from text collections and is written entirely in MATLAB. TMG can be used for the application of a wide range of text preprocessing techniques, such as stopword removal and stemming. Furthermore, TMG can be used for the construction of query vectors using the collection

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The goal of the experiments was to evaluate an explanation of set-alternation costs based on episodic memory principles. The assumption is that performance of any task is a consequence of memory retrieval processes that involve representations of specific prior experiences (Kolers, 1976; Leboe, Whittlesea, & Milliken, 2005; Neill & Mathis, 1998; Tenpenny, 1995; Whittlesea, 1997; Whittlesea & Jacoby, 1990). When the Event 1 and 3 targets mismatch the retrieval of the Event 1 memory episode is not entirely appropriate for performing the Event 3 task. The interference due to a partial match between Events 1 and 3 might be the source of set-alternation costs. Results of Experiment 1 revealed larger costs in the high probability set-alternation condition. The high probability set-alternation condition encouraged retrieval of Event 1. However, because the targets of Event 1 and 3 mismatched the retrieval of Event 1 interfered with the processing of Event 3’s task-set. In other words, the interference due to a match in task-sets but a mismatch in targets generated costs. If set-alternations costs originate from a partial match between Events 1 and 3, increasing the amount of overlapping information between these events should reduce costs. The findings of Experiments 2 and 3 showed reduced set-alternation costs when there was a target identity match between Events 1 and 3. Lastly, Experiment 4 showed that set-alternation costs are larger when the retrieval of the Event 1 memory episode is obstructed. That is, costs were larger when there was a combination of obstructed Event 1 retrieval and a partial match between Events 1 and 3.

The design of Digital Library Systems (DLSes) has evolved overtime, both in sophistication and complexity, to complement the complex nature and sheer size of digital content being curated. However, there is also a growing demand from content curators, with relatively small-size collections, for simpler and more manageable tools and services to manage their content. The reasons for this particular need are driven by the assumption that simplicity and manageability might ultimately translate to lower costs of maintenance of such systems. This research proposes and advocates for a minimalist and simplistic approach to the overall design of DLSes. It is hypothesised that Digital Library (DL) tools and services based on such designs could potentially be easy to use and manage. A meta-analysis of existing DL and non-DL tools was conducted to aid the derivation of design principles for simple DLSes. The desig n principles were then mapped to design decisions applied to the design of a prototype simple repository. In order to assess the effectiveness of the simple repository design, two real-world case study collections were implemented based on the design. In addition, a developer-oriented study was conducted using one of the case study collections to evaluate the simplicity and ease of use of the prototype system. Furthermore, performance experiments were conducted to establish the extent to which such a simple design approach would scale and also establish comparative advantages to existing designs. In general, the study outlined some possible implications of simplifying DLS design; specifically the results from the developer-oriented user study indicate that simplicity in the design of the DLS repository sub-layer does not severely impact the interaction between the service sub-layer and the repository sub-layer. Furthermore, the scalability experiments indicate that desirable performance results for small- and medium-sized collections are attainable. The practical implication of the proposed design approach is two-fold: firstly the minimalistic design has the potential to be used to design simple and yet easy to use tools with comparable features to those exhibited by well-established DL tools; and secondly, the principled design approach has the potential to be applied to the design of non-DL application domains.

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