In this brief note, we give a simple information-theoretic proof that 2-state 3-color universal Turing machines don’t exist. Let us suppose that there exists a 2-state 3-color universal Turing machine U (without a halting state). Then it must be possible to program U to emulate any Turing machine T (without a halting state) by initializing the tape of U with a string of colors that specify both...

OBJECTIVE To assess the role of the introital ultrasound in the evaluation of patients with low urinary tract symptoms after sling placement. MATERIAL AND METHOD From 2000 till 2007, a total of 31 patients underwent sub-urethral tape placement for a stress urinary incontinence and developed thereafter a low urinary tract symptoms. The urological evaluation consisted of a detailed medical hist...

In the present paper we propose a generalization of the model developed in Afferrante, L.; Carbone, G.; Demelio, G.; Pugno, N. Tribol. Lett. 2013, 52, 439-447 to take into account the effect of the pre-tension in the tape. A detailed analysis of the peeling process shows the existence of two possible detachment regimes: one being stable and the other being unstable, depending on the initial con...

We propose a new method of ensuring the redundant storage of information on tertiary storage, especially tape storage. Conventional methods for redundant data storage on tape include mirroring (storing the data twice) and Redundant Arrays of Inexpensive Tapes (RAIT). Mirroring incurs high storage costs, while RAIT is inflexible because special hardware is used and all tapes in a stripe must be ...

Traditionally, digital tape has been used by applications accessing the tape mostly sequentially. Applications having a random access pattern to the data are much better off storing the data on magnetic disks. Today we see new application areas, where the need for huge amounts of digital storage does not make it cost-effective to store all the data on magnetic disk. One example of such an appli...

Tape backup has traditionally been the mainstay of enterprise data protection when long-term data protection is required. As disk technologies have improved and economies of scale have driven down prices, disk adoption rates have surged and it would appear disk is poised to eclipse tape as the dominant backup platform and relegate tape to a minor archival and disaster recovery role. Numerous su...

In a PTFE tape phase-vanishing reaction (PV-PTFE), a delivery tube sealed with PTFE tape is inserted into a vessel which contains the substrate. The reagent diffuses across the PTFE tape barrier into the reaction vessel. PTFE co-polymer films have been found to exhibit selective permeability towards organic compounds, which was affected by the presence of solvents. In this study, we attempted t...

The paper presents preliminary results of an experimental study on solar water heater with full width and 75% twisted tapes as heat transfer enhancement device. The study shows that the thermal efficiency due the use of the twisted tape increases by 4.5-8%; higher for the 75% twisted tape. Keyword Solar water heater (collector), tube-in-fin, twisted tape, thermal efficiency, performance enhance...

Nowadays, heat exchangers with twisted-tape inserts have widely been applied for enhancing the convective heat transfer in various industries such as thermal power plants, chemical processing plants, air conditioning equipment, refrigerators, petrochemical, biomedical and food processing plants. In general, twisted tape insert introduces swirl into the bulk flow which consequently disrupts a th...

STUDY DESIGN Randomized, controlled, crossover trial. OBJECTIVES To examine the effects of elastic therapeutic taping (ETT) applied to the lumbar paraspinal region on back muscle endurance (BME) compared to no tape or a rigid therapeutic taping (RTT) procedure in individuals with nonspecific low back pain. BACKGROUND Elastic therapeutic taping is an increasingly popular intervention for cli...