هدف: هدف از این پژوهش بررسی واسطه‌­ای راهبردهای سازش نایافته تنظیم شناختی هیجان در رابطه باورهای فراشناختی با اضطراب امتحان بود. روش: روش حاضر توصیفی و نوع همبستگی جامعه آماری را کلیه دانش‌­آموزان پسر دوره دوم متوسطه شهر تهران سال تحصیلی 1401-1400 تشکیل دادند که تعداد 456 نفر به نمونه‏‌گیری دسترس انتخاب شرکت کردند. ابزارها شامل سیاهه ابوالقاسمی همکاران (1375)، پرسشنامه باکو دیگران (2009)، فرم ک...

With the emergence of software delivery platforms such as Microsoft’s .NET, code compression has become one of the core enabling technologies strongly affecting system performance. In this paper, we present PPMexe a set of compression mechanisms for executables that explores their syntax and semantics to achieve superior compression rates. The fundament of PPMexe is the generic paradigm of pred...

With the emergence of software delivery platforms such as Microsoft’s .NET, code compression has become one of the core enabling technologies strongly affecting system performance. In this paper, we present compression mechanisms for executables that explore their syntax and semantics to achieve superior compression rates. The fundament of our compression codec is the generic paradigm of predic...

The PPM data compression scheme has set the performance standard in lossless compression of text throughout the past decade. PPM is a "nite-context statistical modelling technique that can be viewed as blending together several "xed-order context models to predict the next character in the input sequence. This paper gives a brief introduction to PPM, and describes a variant of the algorithm, ca...

— To attain a wider range of data rates in pulse position modulation (PPM) schemes with constrained pulse durations, the sender can repeat a PPM symbol multiple times, forming a super-symbol. In addition to the slot and symbol synchronization typically required for PPM, the receiver must also properly align the noisy super-symbols. We present a low-complexity approximation of the maximum-likeli...