Efficient MDS Diffusion Layers Through Decomposition of Matrices

Diffusion layers are critical components of symmetric ciphers. MDS matrices are diffusion layers of maximal branch number which have been used in various symmetric ciphers. In this article, we examine decomposition of cyclic matrices from mathematical viewpoint and based on that, we present new cyclic MDS matrices. From the aspect of implementation, the proposed matrices have lower implementation costs both in software and hardware, compared to what is presented in cryptographic literature, up to our knowledge

Completely Simple and Regular Semi Hypergroups 1 HOSSEIN MOUSA JAFARABADI, 2 NOR HANIZA SARMIN

Abstract. In this paper the notion of simple and completely simple semi hypergroups are introduced. Basic properties of these algebraic structures are considered. Some methods for constructing new kinds of these hyperstructures are presented. The regularity of semi hypergroups is considered and three structural results are proved. Mathematics Subject Classification: 20N20 Keywords and phrases: Semi hypergroup, hypergroup, simple semi hypergroup, completely simple semi hypergroup, regular semi hypergroup

Effect of Self-monitoring Strategy Instruction on Modify Behavior of Hyperactive Disorder in Early Childhood of Shiraz City

Abstract: The objective of this research was study the effects of self-monitoring method teaching on hyperactive child s behavior modify of preschool centers of Shiraz. So the CSI-IV, questionnaire for teachers and parents was performed by using cluster random sampling about 40 hyperactive child between 5 to 6 years of Shiraz preschool centers which includes 20 boys and 20 girls whom they were placed in 2 group of experimental and control. For experimental group, self-monitoring method teaching program was performed in 12 days, 3 hours daily, the control group did not receive any interference program. The results were analyzed by use of T-Test to compare the mean of experimental and control group. The results indicated that: Selfmonitoring method teaching was effective on hyperactive Childs modifying behavior. Self-monitoring method teaching was effective on increasing hyperactive child s waiting for their turn in group activity, amount of not leaving the bench, amount of no

Phonetic Neutralization: The Case of Persian Final Devoicing Phonetic Neutralization: The Case of Persian Final Devoicing

Abstract This paper aims to investigate the degree of word-final devoicing in Persian (Farsi). 9 word pairs were chosen with each word consisting of one syllable. Each word has the structure CVC, and in every pair only the phoneme for final C changes in underlying voicing and the initial CV remains unchanged. Pairs were chosen in a way to include all Persian voiced and voiceless plosives: /p , b/, /t , d/ , /k , g/, and also all three Persian long vowels: / i: / , / u: / , / ɑ: /. Words were pronounced by 4 Persian native speakers, 2 males and 2 females, and were recorded using Praat software. Acoustic analysis focused on different measures, like: F0, F1, F2, F3, COG, VOT and duration. Results showed the absence of complete neutralization of underlying voice in this environment in Persian

Contextual differences in the interpretation of thermal perception scales – a large-scale international questionnaire study

Within the IEA EBC Annex 69 on Strategy and Practice of Adaptive Thermal Comfort in Low Energy Buildings (http://annex69.org/), we are conducting an international questionnaire study related to thermal comfort scales. Our objective is the analysis of influences on the perception of thermal comfort scales. In particular, we are looking at the effect of the current thermal state, peoples climatic background, and level of adaptation on the relationship between thermal sensation, thermal comfort, and thermal acceptance

Metadata record for: The Scales Project, a cross-national dataset on the interpretation of thermal perception scales

This dataset contains key characteristics about the data described in the Data Descriptor The Scales Project, a cross-national dataset on the interpretation of thermal perception scales. Contents: 1. human readable metadata summary table in CSV format 2. machine readable metadata file in JSON format Versioning Note:Version 2 was generated when the metadata format was updated from JSON to JSON-LD. This was an automatic process that changed only the format, not the contents, of the metadata