A key recovery attack on the stream cipher Achterbahn128/80, a cipher in the second phase of eSTREAM, is given. The key observation is a high dependency between some input bits to the Boolean combining function generating the keystream. It results in the first known attacks on both the 128-bit and the 80-bit variants of the cipher. The amount of keystream bits required in the attacks is less th...

Curriculum Change in South Africa Since 1994 The development of a national curriculum is a major challenge for any nation, and when a whole country depends on it to transform society in one broad stroke, it imposes tremendous expectations on such a curriculum. South Africa’s democratic government has inherited a divided and unequal system of education and must recognise that apartheid is not th...

Voltage Source Converter (VSC) based HVDC is the most recent HVDC technology with extruded DC cables in small and medium power transmission. VSC-HVDC converters include Insulated Gate Bipolar Transistors (IGBT’S) and operated with high frequency Pulse Width Modulation (PWM) in order to get high speed control of both active and reactive power. With VSC-HVDC there is an addition degree of freedom...

In this paper, we use linear approximations of the addition modulo 2 of three n-bit integers to identify linear approximations of g1, g2, the feedback functions of HC-128. This, in turn, shows that the process of keystream output generation of HC-128 can be well approximated by linear functions. In this direction, we show that the “least significant bit” based distinguisher (presented by the de...

Follicular dendritic cell sarcoma is an extremely rare malignant neoplasm arising from follicular dendritic cells, and this was fi rst described in 1986 by Monda et al. (1). About 60% of the cases occur in lymph nodes such as the cervical, axillary and mediastinal lymph nodes, while a wide variety of extranodal sites may also be affected, including the tonsil, spleen, liver, gastrointestinal tr...

Let p(n) denote the overpartition function. In a recent paper, K. Mahlburg showed that p(n) ≡ 0 (mod 64) for a set of integers of arithmetic density 1. In this paper, we will prove that p(n) ≡ 0 (mod 128) for almost all integers n.

Management considerations Pretreatment evaluation Vasomotor symptoms Urogenital and Vaginal symptoms The role of local vaginal estrogen for treatment of vaginal atrophy in postmenopausal women Progestogen indication Venous thromboembolism Stroke Diabetes mellitus Breast cancer Endometrial cancer Ovarian cancer Colorectal cancer Gallbladder disease Osteoporosis Dementia and cognitive decline Dep...

475 August 2015 Anesthesiology, V 123 • No 2 475 August 2015 FFor many generations, people have posed the question, “What would you do if you had one day left to live?” Of course, this kind of question often leads to more questions about how to spend that day. “Who would you call to say goodbye? Would you make one last visit to family to say I love you? Would you try to reconnect with those wit...