Benchmarking the performance of Bhutanese students with the performance of the students from the OECD's PISA countries     

Gembo Tshering  Vaughan Prain 《Educational Research and Evaluation》2013,19(4):263-281

Setting international benchmarks for education systems of the Organisation for Economic Co-operation and Development (OECD) countries is one of the goals of the OECD's Programme for International Student Assessment (PISA). However, some countries are not able to participate in PISA, despite their desire to set international benchmarks for their education systems. This article presents a method of setting international benchmarks for a country's school education system, without necessarily participating in PISA, by designing a test using the test items released by PISA for public consumption. The method has been implemented in a study that involved 1,500 Grade 10 students across 60 schools in Bhutan. The students were administered a mathematics test constructed from the PISA Mathematical Literacy test items. The study showed that the performance of Bhutanese students was comparable with the performance of the students from the countries that participated in PISA 2003 and that Bhutan could learn from both high- and low-performing school education systems of those countries.  相似文献   

New methods for compression of MP double array by compact management of suffixes     

Tshering C. Dorji  El-sayed Atlam  Susumu Yata  Mahmoud Rokaya  Masao Fuketa  Kazuhiro Morita  Jun-ichi Aoe 《Information processing & management》2010

Minimal Prefix (MP) double array is an efficient data structure for a trie. However, its space efficiency is degraded by the non-compact management of suffixes. This paper presents three methods to compress the MP double array. The first two methods compress the MP double array by accommodating short suffixes inside the leaf nodes, and pruning leaf nodes corresponding to the end marker symbol. These methods achieve size reduction of up to 20%, making insertion and deletion faster at the same time while maintaining the retrieval time of O(1). The third method eliminates empty spaces in the array that holds suffixes, and improves the maximum size reduction further by about 5% at the cost of increased insertion time. Compared to a Ternary Search Tree, the key retrieval of the compressed MP double array is 50% faster and its size is 3–5 times smaller.  相似文献   

New approaches to conserving the wall painting heritage of Bhutan     

Stephen Rickerby  Lisa Shekede  Dorjee Tshering  Tshewang Gyalpo 《文物保护研究》2014,59(5):S127-S130

  相似文献