We have developed and deployed several web-based tutors for C++ programming concepts. We have been remotely collecting usage data from these tutors, and analyzing them for the benefit of the students, the teachers and ourselves. In this paper, we will describe the tutors, the types of data collected, and the types of analysis we perform on the data for the benefit of the various constituencies ...

the effect of gibberellic acid (ga3) on jerusalem cherry (solanum pseudocapsicum l.) was evaluated at pot cultivation conditions. this study was performed in factorial test based on complete random design plan and 4 repeats with 12 treatments. the main factor was included spraying, drip and spraying + drip. secondary factor was included concentrations of ga3 at 0, 100, 200 and 400 mg.l-1 levels...

We propose a practical flexible (or arbitrary) length small domain block cipher, FNR encryption scheme. FNR denotes Flexible Naor and Reingold. It can cipher small domain data formats like IPv4, Port numbers, MAC Addresses, Credit card numbers, any random short strings while preserving their input length. In addition to the classic Feistel networks, Naor and Reingold propose usage of Pair-wise ...

Recent spectral topic discovery methods are extremely fast at processing large document corpora, but scale poorly with the size of the input vocabulary. Random projections are vital to ensure speed and limit memory usage. We empirically evaluate several methods for generating random projections and measure the effect of parameters such as sparsity and dimensionality. We find that methods with s...

abstract introduction: introduction: traditionally, the central library of any university is the main source of scientific data retrieval for respective faculty members. exploration of rate and pattern of such usage makes it possible to promote the quantity and quality of library services and increasing the efficacy of faculty members' activities. objective: to determine the rate of usage ...

This paper develops a two-stage stochastic cost-reliability optimization model for multi-component systems subjected to uncertain stress exposure which leads to uncertain component and system degradation and wear. Optimization models are used for making decisions of system configurations to be applied in different and occasional diverse future usage scenarios. Component reliability and cost dat...

the present investigation was carried out to identify the factors affecting the use of information technology ‎‎(it) by trainees in apply - scientific education in agriculture. the statistical population of this study was educators ‎of agricultural apply - scientific centers. method of sampling was random multi steps sampling. questionnaire used ‎for data collection. the collected data were ana...

the increase in the number of adsl users over recent years has encouraged different companies to enter to this context. for this reason, the current article aims to study internet adsl users’ characteristics that affect their usage rate as one of the factors of organization’s achievement. therefore, the data were collected using simple random method and questionnaire, the validity and reliabili...

For programmers seeking to familiarize themselves with the component of the C++11 standard library, we provide background information and tutorial guidance with numerous usage examples.