Effects of Internet Exclusion on the City of Detroit

Introduction The rise of Information Technology (IT) in the past 50 years has revolutionized many areas of human life and activity. Information Technology’s most obvious areas of impact are often those where they add a great and obvious value to a particular industry, and it is extremely difficult to find some aspect of life that has not changed since its inception. Some examples include the digitization of stock trading, the automation of factories and life-saving operations, and the enhanced communication and collaboration across public education, enterprise activity, and international affairs. However, what is often overlooked and understudied are the secondary and tertiary effects I.T. has on a particular aspect of human life. These can include such things as subjective feelings of inclusion, belonging, and generally having a “voice.” This research paper analyzes the effects of the rapid rise of I.T. in the city of Detroit, the disparity between I.T. in Detroit and its surrounding areas, as well as the effects this development has had on community engagement and citizenship. This paper will attempt to establish the existence of a digital divide between Detroit and its surrounding areas, as well as highlight the severity of the divide itself by using examples of relevant geographical areas and their associated overall Internet health. Other topics to be explored in this paper will include the effects of this divide on the citizens of Detroit, such as effects on healthcare and education quality and access and its downstream effects. Correlation of key demographic markers will be discussed in an attempt to establish the reason behind this divide. Finally, remedial efforts by both local, state, and federal institutions will be explored in order to see and decipher if these efforts are sustainable, making actual change, and helping to address the problem of Internet access, quality, and availability of hardware

Frustrated couplings between alternating spin-1/2 chains in AgVOAsO4

We report on the crystal structure and magnetic behavior of the spin-1/2 compound AgVOAsO4. Magnetic susceptibility, high-field magnetization, and electron spin resonance measurements identify AgVOAsO4 as a gapped quantum magnet with a spin gap Delta ~ 13 K and a saturation field H_s ~ 48.5 T. Extensive band structure calculations establish the microscopic magnetic model of spin chains with alternating exchange couplings J ~ 40 K and J' ~ 26 K. However, the precise evaluation of the spin gap emphasizes the role of interchain couplings which are frustrated due to the peculiar crystal structure of the compound. The unusual spin model and the low energy scale of the exchange couplings make AgVOAsO4 a promising candidate for an experimental investigation of Bose-Einstein condensation and other exotic ground states in high magnetic fields.Comment: 10 pages + supplementary information and cif files, 7 figures, 6 table

Effectiveness of agricultural interventions that aim to improve nutritional status of children: systematic review

Objective To assess the effectiveness of agricultural interventions in improving the nutritional status of children in developing countries

Directed networks as a novel way to describe and analyze cardiac excitation : directed graph mapping

Networks provide a powerful methodology with applications in a variety of biological, technological and social systems such as analysis of brain data, social networks, internet search engine algorithms, etc. To date, directed networks have not yet been applied to characterize the excitation of the human heart. In clinical practice, cardiac excitation is recorded by multiple discrete electrodes. During (normal) sinus rhythm or during cardiac arrhythmias, successive excitation connects neighboring electrodes, resulting in their own unique directed network. This in theory makes it a perfect fit for directed network analysis. In this study, we applied directed networks to the heart in order to describe and characterize cardiac arrhythmias. Proof-of-principle was established using in-silico and clinical data. We demonstrated that tools used in network theory analysis allow determination of the mechanism and location of certain cardiac arrhythmias. We show that the robustness of this approach can potentially exceed the existing state-of-the art methodology used in clinics. Furthermore, implementation of these techniques in daily practice can improve the accuracy and speed of cardiac arrhythmia analysis. It may also provide novel insights in arrhythmias that are still incompletely understood

Prevalence and profile of musculoskeletal injuries in ballet dancers: A systematic review and meta-analysis

Aim: To determine the prevalence of musculoskeletal disorders and anatomical regions which are most frequently injured in ballet dancers. Methods: Published (AMED, CiNAHL, EMBASE, SPORTDiscus, psycINFO, MEDLINE, the Cochrane Library) and grey literature databases (OpenGrey, the WHO International Clinical Trials Registry Platform, Current Controlled Trials and the UK National Research Register Archive) were searched from their inception to 25th May 2015 for papers presenting data on injury prevalence in ballet dancers. Two reviewers independently identified all eligible papers, data extracted and critically appraised studies. Study appraisal was conducted using the CASP appraisal tool. Pooled prevalence data with 95% confidence intervals were estimated to determine period prevalence of musculoskeletal disorders and anatomical regions affected. Results: Nineteen studies were eligible, reporting 7332 injuries in 2617 ballet dancers. The evidence was moderate in quality. Period prevalence of musculoskeletal injury was 280% (95% CI: 217%-343%). The most prevalent musculoskeletal disorders included: hamstring strain (51%), ankle tendinopathy (19%) and generalized low back pain (14%). No papers explored musculoskeletal disorders in retired ballet dancers. Conclusions: Whilst we have identified which regions and what musculoskeletal disorders are commonly seen ballet dancers. The long-term injury impact of musculoskeletal disorders in re-tired ballet dancers remains unknown

Cs10Ta29.27O78

Single crystals of caesium tantalate(V), Cs10Ta29.27O78, were obtained as a serendipitous product in a welded tantalum ampoule by a blank reaction of CsBr and bis­muth subnitrate [Bi5O(OH)9(NO3)4] with the container material. The crystal structure of the title compound is made up of a three-dimensional framework constituted by two types of layers, viz. (Ta6O15)n and (Ta3O9)n, parallel to (001), which are linked together by TaO6 octa­hedra (3m. symmetry) along [001]. This framework has cavities where three independent Cs+ ions (3m. and m2 symmetry, respectively) are located. The compound reveals a Ta deficiency at one trigonal prismatic coordinated site ( m2 symmetry). The composition of the title compound was verified by energy-dispersive X-ray analysis of single crystals