We describe a criterion for real or complex hyperbolic lattice to admit residually finite rational solvable (RFRS) tower that consists entirely of congruence subgroups. use this show certain Bianchi groups PSL 2 (

OBJECTIVES To describe mechanographic tests that can be performed by patients with a range of functional abilities and to assess the reproducibility of test results in healthy adults and children. METHODS Fifteen adults and 13 children underwent two separate sessions, one week apart. Participants performed five different tests in both sessions: Multiple one-legged hopping, multiple two-legged...

this article is a comparative evaluation of airflow in two kinds of yazdi and kermani wind-towers. in the late decades of twenty century regarding to high population growth rate and energy crisis, vernacular architecture and its passive methods for gaining thermal comfort, has been strongly focused. moreover, a huge scientific movement setup for researches deep in exploring passive cooling and ...

あらまし 次世代移動無線通信では超高速パケットアクセスが主流になり,誤り訂正符号化と自動再送要求 (ARQ)を組み合わせたハイブリッド ARQ(HARQ)が重要な技術になると考えられる.直接拡散符号分割マルチアク セス(DS-CDMA)を対象に,平均 2 乗誤差最小(MMSE)規範に基づく周波数領域等化(FDE)を用いることで,よく知ら れた Rake 合成受信よりも優れた伝送特性が得られることが示されている.FDE を用いる場合にはブロック間干渉 (IBI)を避けるためにガードインターバル(GI)の挿入が必要であるが,これは伝送効率の低下を招く.そこで最近, GI の挿入を必要としないオーバーラップ FDE が提案された.筆者らは以前,オーバーラップ FDE を用いる DS-CDMA HARQ のスループット特性を明らかにしたが,これまでの検討では理想チャネル推定を仮定していた. ...

The purpose of this study was to examine the role of central command, generated prior to arbitrary motor execution, in cardiovascular and muscle blood flow regulation during exercise. Thirty two subjects performed 30 s of two-legged cycling or 1 min of one-legged cycling (66 ± 4% and 35% of the maximal exercise intensity, respectively), which was started arbitrarily or abruptly by a verbal cue ...

As the mobile telecommunication systems are growing tremendously all over the world, the numbers of handheld and base stations are also rapidly growing and it became very popular to see these base stations distributed everywhere in the neighborhood and on roof tops which has caused a considerable amount of panic to the public in Palestine concerning wither the radiated electromagnetic fields fr...

Objective: Recent technological advances have exponentially expanded globally; harbouring upon Electromagnetic fields (EMF). The utilization of field has become universal from everyday usage electronic appliances such as micro wave ovens, tablets and portable computers to telecommunication systems mobile phone towers, radio- television broadcast power transmission resulting in electromagnetic a...

In this study we focus on bio-inspired legged locomotion concepts. A primary goal of comparative biomechanics is to understand the fundamental physics of locomotion within an evolutionary context. Such an understanding of legged locmotion results in a transition from copying nature to borrowing strategies for interacting with the physical world in design and control of bio-inspired legged robot...

1. Motivation Legged robots will need to be fast, robust and efficient for real world applications. In this research, we aim to design a high speed bipedal running robot on 3D environments based on active tail stabilization method, Raptor 2 robot. 2. State of the Art Many legged robots have been studied and developed so far, but only a few robots have achieved stable fast legged locomotion. In ...