Understanding mathematical questions effectively is a crucial task, which can benefit many applications, such as difficulty estimation. Researchers have drawn much attention to designing pre-training models for question representations due the scarcity of human annotations (e.g., labeling difficulty). However, unlike general free-format texts user comments), are generally designed with explicit...

The traditional method of construction and demolition waste (CDW) consumes a substantial amount land resources causing severe environmental social problems. In Portugal, the low recycling rate, combined with high use landfill as way managing CDW, has resulted in negative index 39% hierarchy, thus making it impossible for Portugal to be classified country that implements hierarchy practice. main...

the implementation of inter-organizational systems like business- to- business e-commerce (b2b e-commerce)  is being categorized as a system with high degree of difficulty since it involves complexity of the multiple relationships and interactions between trading partners. companies need to consider their own strengths and weaknesses before making decisions to explore new b2b e-commerce without...

the increasing reliance on information gathered from the web and other internet technologies raise the issue of trust. through the development of semantic web, one major difficulty is that, by its very nature, the semantic web is a large, uncensored system to which anyone may contribute. this raises the question of how much credence to give each resource. each user knows the trustworthiness of ...

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learning vocabulary constitutes a crucial step in language learning. amongst different word categories, compound words have failed to attract the attention they deserve. this led us to conduct a study trying to pinpoint the difficulties learning these words and to suggest some techniques facilitating their acquisition. to that effect, a questionnaire as well as a vocabu-lary test were given to ...