Development of an energy-absorbing passenger seat for a transport aircraft

Commercial air transport passenger safety and survivability, in the event of an impact-survivable crash, are subjects receiving increased technical focus/study by the aviation community. A B-720 aircraft, highly instrumented, and remotely controlled from the ground by a pilot in a simulated cockpit, was crashed on a specially prepared gravel covered impact site. The aircraft was impacted under controlled conditions in an air-to-ground gear-up mode, at a nominal speed of 150 knots and 4-1/2 deg glide slope. Data from a number of on board, crash worthiness experiments provided valuable information related to structural loads/failure modes, antimisting kerosene fuel, passenger and attendant restraint systems and energy absorbing seats. The development of an energy absorbing (EA) seat accomplished through innovative modification of a typical modern standard commercial aviation transport, three passenger seat is described

Equality and Value-holism

In this paper, I consider a recent challenge to egalitarianism raised by Michael Huemer. Huemer?s challenge takes the form of a dilemma: egalitarians can either be atomists or holists about equality?s value. If they are atomists, then they must accept that equality in fact does not have intrinsic value; if they are holists, then their view will be inconsistent with an intuitively very plausible form of consequentialism. I show that this dilemma should not trouble egalitarians. Egalitarians can be holists about value and still embrace consequentialism

Droplets displacement and oscillations induced by ultrasonic surface acoustic waves: a quantitative study

We present an experimental study of a droplet interacting with an ultrasonic surface acoustic wave (SAW). Depending on the amplitude of the wave, the drop can either experience an internal flow with its contact-line pinned, or (at higher amplitude) move along the direction of the wave also with internal flow. Both situations appear together with oscillations of the drop free-surface. The physical origins of the internal mixing flow as well as the drop displacement and surface waves are still not well understood. In order to give insights of the underlying physics involved in these phenomena, we carried out an experimental and numerical study. The results suggest that the surface deformation of the drop can be related as a combination between acoustic streaming effect and radiation pressure inside the drop.Comment: 9 pages, 14 figures. To appear in Physical Review

The Integrity of Religious Believers

According to Cécile Laborde, persons with religious commitments that are incidentally burdened by generally applicable laws should, under certain circumstances, be provided with an exemption from those laws. Labore’s justification for this view is that religious commitments are a type of commitment with which a person must comply if she is to maintain her integrity. I argue that Laborde´s account is insufficiently demanding in terms of the other-regarding attitudes it expects people to have before they can make claims to exemptions based on their integrity. The reason for this is that Laborde’s account rests on what I call a ‘non-moralised’ view of integrity. I raise some criticisms of this view and defend an alternative, ‘moralised’ view of integrity, according to which a religious person’s integrity depends on whether the practice she wishes to perform complies with certain moral constraints

A Paradox of State-Dependent Diffusion and How to Resolve It

Consider a particle diffusing in a confined volume which is divided into two equal regions. In one region the diffusion coefficient is twice the value of the diffusion coefficient in the other region. Will the particle spend equal proportions of time in the two regions in the long term? Statistical mechanics would suggest yes, since the number of accessible states in each region is presumably the same. However, another line of reasoning suggests that the particle should spend less time in the region with faster diffusion, since it will exit that region more quickly. We demonstrate with a simple microscopic model system that both predictions are consistent with the information given. Thus, specifying the diffusion rate as a function of position is not enough to characterize the behaviour of a system, even assuming the absence of external forces. We propose an alternative framework for modelling diffusive dynamics in which both the diffusion rate and equilibrium probability density for the position of the particle are specified by the modeller. We introduce a numerical method for simulating dynamics in our framework that samples from the equilibrium probability density exactly and is suitable for discontinuous diffusion coefficients.Comment: 21 pages, 6 figures. Second round of revisions. This is the version that will appear in Proc Roy So

ANALISIS CURAHAN TENAGA KERJA WANITA TANI DALAM PRODUKSI USAHATANI PADI SAWAH DI KECAMATAN MALAKA TENGAH KABUPATEN MALAKA

This research was conducted in the Central Malaka district, namely in Wehali village and Kletek village from January to May 2020. This research aims to determine the amount of female agricultural labor force in the production of lowland rice farming, the factors that affect the outpouring of female workers in lowland rice farming. , as well as a large influence on the production of lowland rice farming. The location of the study was determined deliberately by as many as 84 female rice farmers using the Slovin formula. The types of data collected are primary data and secondary data. The data collected was then analyzed descriptively to determine the first objective, and using multiple linear regression analysis to determine the second objective.            The results showed that: (1) The total outpouring of female agricultural labor in the production of lowland rice farming in the Central Malaka district was 2,400.57 HKO/planting season of the total area of ​​land cultivated of 6,310 acres, with an average share of female labor amounting 57.95 HKO/planting season. (2) Based on the results of multiple linear regression analysis, the factor of land area and lowland rice farming income has a significant effect on the outpouring of female agricultural labor. Meanwhile, the factors of the number of family members, the level of education of female farmers, and the age of female farmers do not have a significant effect on the outpouring of female farm labor in the production of lowland rice farming in Central Malaka district, Malaka regency

Dissipative failure of adiabatic quantum transport as a dynamical phase transition

Entanglement is the central resource in adiabatic quantum transport. Dephasing affects the availability of that resource by biasing trajectories, driving transitions between success and failure. This depletion of entanglement is important for the practical implementation of quantum technologies. We present an alternative perspective on the failure of adiabatic computation by understanding the failure of adiabatic transport as a dynamical phase transition. These ideas are demonstrated in a toy model of adiabatic quantum transport in a two-spin system

An assessment of potential unintended consequences following a national antimicrobial stewardship programme in England: an interrupted time series analysis

Background: The 'Quality Premium' (QP) introduced in England in 2015 aimed to financially reward local healthcare commissioners for targeted reductions in primary care antibiotic prescribing. We aimed to evaluate possible unintended clinical outcomes related to this QP. Methods: Using Clinical Practice Research Datalink and Hospital Episode Statistics datasets, we examined general practitioner (GP) consultations (visits) and emergency hospital admissions related to a series of pre-defined conditions of unintended consequences of reduced prescribing. Monthly age and sex-standardised rates were calculated using a direct method of standardisation. We used segmented regression analysis of interrupted time series to evaluate the impact of the QP on seasonally adjusted outcome rates. Results: We identified 27,334 GP consultations and over five million emergency hospital admissions with pre-defined conditions. There was no evidence that the QP was associated with changes in GP consultation and hospital admission rates for the selected conditions combined. However, when each condition was considered separately, a significant increase in hospital admission rates was noted for quinsy, and significant decreases were seen for hospital-acquired pneumonia, scarlet fever, pyelonephritis and complicated urinary tract conditions. A significant decrease in GP consultation rates was estimated for empyema and scarlet fever. No significant changes were observed for other conditions. Conclusions: Findings from this study show that overall there was no significant association between the intervention and unintended clinical consequences, with the exception of a few specific conditions, most of which could be explained through other parallel policy changes or should be interpreted with caution due to small numbers