53,015 research outputs found
3-D topology optimization of single-pole-type head by using design sensitivity analysis
No full textIt is necessary to develop a write head having a large recording field and small stray field in adjacent tracks and adjacent bits in perpendicular magnetic recording systems. In this paper, a practical three-dimensional topology optimization technique combined with the edge-based finite-element method is proposed. A technique for obtaining a smooth topology is also shown. The optimization of single-pole-type head having a magnetic shield is performed by using the topology optimization technique so that the leakage flux in the adjacent bit can be reduced. A useful shape of the magnetic shield obtained by the proposed technique is illustrated. </p
Did Blue Cross and Blue Shield Suffer from Adverse Selection? Evidence from the 1950s
No full textThis paper uses a unique data set from 1957 to examine whether or not Blue Cross and Blue Shield suffered from an adverse selection death spiral after for-profit commercial insurance companies entered the market for health insurance. Results suggest that moving to experience rating may have helped the Blues counteract adverse selection in the group health insurance market. Adverse selection posed a greater problem for the Blues in the market for individual health insurance, possibly because of differences in the way the Blues screened potential enrollees relative to commercial insurance companies.
The SHIELD approach
No full textWith a business baseline focused on the impact of embedded systems in the years ahead, the book investigates the Security, Privacy and Dependability (SPD) requirements raised from existing and future IoT, Cyber-Physical and M2M systems. It proposes a new approach to embedded systems SPD, the SHIELD philosophy, that relies on an overlay approach to SPD, on a methodology for composable SPD, on the use of semantics, and on the design of embedded systems with built-in SPD. The book explores new ground and illustrates the development of approximately forty prototypes capable of managing and enhancing SPD, including secure boot, trusted execution environments, adaptable radio interfaces, and different implementations of the middleware for measuring and composing SPD
Affidavit of D. P. Shield regarding Samuel Beach Axtell
No full textAffidavit dated June 11, 1878 of D. P. Shield, in San Miguel County, concerning Samuel Beach Axtell and the Tunstall murder, Lincoln County War, before J. Felipe Baca, Clerk of the Probate Court. Account of Governor Axtell and Captain Purington coming to the home of A. A. McSween, in Lincoln, and that Shield, Widenmann and Reverend Ealy were present. Axtell informed them of his intended actions and they said he should first consult the citizens of the town. Axtell dispised the local people. Shield and Isaac Ellis, a merchant, also visited Axtell at Fort Stanton about condition in Lincoln, illegal murderers controlling the town. Comments on William L. Rynerson letter. Riley, McSween, etc. HL introduction page overlaid by document. Affidavit in English, handwritten, 3pp/fr
Transient neonatal diabetes: widening the understanding of the etiopathogenesis of diabetes
No full textTransient neonatal diabetes (TND) is a rare type of diabetes that presents soon after birth, resolves by 18 months, and predisposes to diabetes later in life. A total of 30 patients were ascertained and investigated for aberrations of chromosome 6. A genotype/phenotype study was also performed. Genotypically, these patients can be classified into 4 etiologic groups. Group 1 had paternal uniparental isodisomy of chromosome 6 (11 cases, including 1 set of identical twins). Group 2 had a duplication involving chromosome band 6q24, which was paternal in origin where tested (4 sporadic cases and 7 familial cases from 2 families). Group 3 consisted of 1 patient with a loss of methylation at a CpG island within the TND critical region (1 sporadic case). Group 4 had no identifiable rearrangement of chromosome 6 (7 sporadic cases). Most patients were growth retarded at birth, presented at a median age of 3 days, and recovered at a median age of 12 weeks. In group 2, 2 relatives of the TND patients who presented with type 2 diabetes and no early history of TND had inherited an identical duplication. An abnormality of chromosome 6 was identified in approximately 70% of sporadic TND cases and in all familial cases. No significant clinical differences were found between the 4 etiological groups. The study has broadened the clinical spectrum of TND to include type 2 diabetes presenting in later life with no neonatal presentation. The findings are consistent with an imprinted gene for diabetes mapping to 6q24, which we predict will have an important function in normal pancreatic development.</p
A seismic study of the mid- and lower-crust beneath the sea of Bothnia: BABEL line 1
No full textIn the Autumn of 1989, Durham University took part in the BABEL Project, a collaboration of scientists from five nations recording wide angle and normal incidence seismic data in the Baltic Shield. Recording stations were set up along the Swedish coast of the Sea of Bothnia to record marine airgun shots at wide angle. Similar stations were operated by Finnish teams on the eastern coast, and by a German team on Aland. The data recorded are of high quality and high resolution in comparison to previous wide angle surveys in the region, with a shot spacing of 75 m. A large proportion (around fifty percent) of the project involved developing software for processing this data. The in-line data from Line 1, and also those recorded at two off-line stations, have been interpreted using Cerveny's Gaussian Beam forward modelling package BEAM87, the in-line model being further constrained by 2D gravity modelling. The resulting models are compared and contrasted with normal incidence data from the same line, other models derived from BABEL data in the Sea of Bothnia and older refraction lines in the vicinity. The models show a highly complex crust whose thickness varies between 50 and 60 km along the profile. The seismic velocity is high, increasing from 5.85 km s(^-l) near the surface to 7.4 km s(^-1) at the base of the crust. Lateral velocity variations are seen in the mid-upper crust while discontinuous reflectors and diffracting bodies are seen at 30 km depth. In the central/northern part of the line the crust thickens and there is a change in seismic velocity. Using other geophysical information from the region, two hypotheses are put forward for interpreting this part of the seismic model. The first is the presence of a large igneous intrusion, and the second is the existence of a shear zone or tectonic boundary cutting Line 1. Further work will be required to confirm either or both of these hypotheses
Shield laws in Australia: Legal and ethical implications for journalists and their confidential sources
No full textThis article examines whether Australia's current shield law regime meets journalists' expectations and whistleblower needs in an era of unprecedented official surveillance capabilities. According to the peak journalists' organisation, the Media, Entertainment and Arts Alliance (MEAA), two recent Australian court cases 'despite their welcome outcome for our members, clearly demonstrate Australia's patchy and disparate journalist shields fail to do their job' (MEAA, 2014a). Journalists' recent court experiences exposed particular shield law inadequacies, including curious omissions or ambiguities in legislative drafting (Fernandez, 2014c, p. 131); the 'unusual difficulty' that a case may present (Hancock Prospecting No 2, 2014, para 7); the absence of definitive statutory protection in three jurisdictions-Queensland, South Australia and the Northern Territory (Fernandez, 2014b, p. 26); and the absence of uniform shield laws where such law is available (Fernandez, 2014b, pp. 26-28). This article examines the following key findings of a national survey of practising journalists: (a) participants' general profile; (b) familiarity with shield laws; (c) perceptions of shield law effectiveness and coverage; (d) perceptions of story outcomes when relying on confidential sources; and (e) concerns about official surveillance and enforcement. The conclusion briefly considers the significance and limitations of this research; future research directions; some reform and training directions; and notes that the considerable efforts to secure shield laws in Australia might be jeopardised without better training of journalists about the laws themselves and how surveillance technologies and powers might compromise source confidentiality.Full Tex
A 2 h periodic variation in the low-mass X-ray binary Ser X-1
No full textSpectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1
Shield I, Shield II and Shield IV prevent phage infection.
No full textGrowth curves of E. coli MG1655 carrying empty pBAD18 (VC) or the same plasmid encoding (a) ShdA I (the sole component of the Shield I system), (b) the Shield II system or ShdA II only, (c) Shield IV or ShdA IV only, and (d) Shield III or ShdA III only. Strains were grown in LB medium supplemented with 0.2% L-arabinose and phages ϕSipho or ϕAlma were added at the start of the growth curve at a MOI = 1. Points show mean +/− SEM (n = 3 biological replicates).</p
Practical analysis of 3-D dynamic nonlinear magnetic field using time-periodic finite element method
No full textA practical 3-D finite element method using edge elements for analyzing stationary nonlinear magnetic fields with eddy currents in electric apparatus, in which the flux interlinking the voltage winding is given, has been proposed. The method is applied to the analysis of magnetic fields in the Epstein frame </p
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