Laboratizing the border: The production, translation and anticipation of security technologies

This paper critically interrogates how borders are produced by scientists, engineers and security experts in advance of the actual deployment of technical devices they develop. This paper explores the prior stages of translation and decision-making as a socio-technical device is conceived and developed. Drawing on in-depth interviews, observations and ethnographic research of the EU-funded Handhold project (consisting of nine teams in five countries), it explores how assumptions about the way security technologies will and should perform at the border shape the way that scientists, engineers, and security experts develop a portable, integrated device to detect CBRNE threats at borders. In disaggregating the moments of sovereign decision making across multiple sites and times, this paper questions the supposed linearity of how science comes out of and feeds back into the world of border security. An interrogation of competing assumptions and understandings of security threats and needs, of competing logics of innovation and pragmatism, of the demands of differentiated temporalities in detection and interrogation, and of the presumed capacities, behaviours, and needs of phantasmic competitors and end-users reveals a complex, circulating and co-constitutive process of device development that laboratises the border itself. We trace how sovereign decisions are enacted as assemblages in the antecedent register of device development itself through the everyday decisions of researchers in the laboratory, and the material components of the Handhold device itself.

São Vicente (RN) nos primeiros anos da TV: Memória, sociabilidade e cotidiano

The present work aims to reflect on the everyday and its Vincentian practices of sociability in the early years of the presence of television in the city of São Vicente (RN), from the memories of the protagonists who witnessed the first insertion of TV set sin the beginning sof 1970s.Thus, the research was guided by some questions deemed relevant to the study in order to understand the most significant changes in the daily Vincentian boosted by the arrival of television in some private houses, which soon became a meeting place, recreation and sociability. At that time, filled the role of TV unites and brings people together. These houses, reinvented in spaces of sociability, were sanctioned by the various actors who gathered daily to include television programming. This popularity of television was measured by the joint efforts of people who moved their homes to homes that had this technical device. Each home with their uniqueness sand peculiarity, which attracted the population frequency f these spaces were frequent. Of course people still sit on the sidewalks, to be held the night rides in the streets and square, but soon came to the program schedule Preferred came into leaving their homes or to homes that had TV, watch them in the design of audiovisual programs. We use the oral memory as the principal methodology in order to interpret the memories recounted by people who lived in that time period studied. For this purpose we constructed a narrative that highlights the categories memory, media, social practices, everyday life and thus has the theoretical and methodological contributions of authors of humanities and social sciences its main foundation. In field research in the use of in-depth interviews, since the narratives of our research is interviewed. The importance of a study of such order, is not only in understanding the TV as an essential mediator for the interaction of individuals in society, from 1970 in São Vicente (RN), but also for the unveiling of his relationship with the daily routines of the Vincentians, founded in environments and symbols that regulated the conduct and reordered the social practices and sociability of these subjects. In this sense, the making of a work on the presence of TV in the city of São Vicente (RN) is also of paramount importance for the history of this media at the national level, since this is nothing more than a set of multiple stories

A política empresarial: a responsabilidade social como mecanismo de segurança

Neste ensaio, tomamos como problema as ações da política empresarial no Brasil, em específico a política de responsabilidade social das empresas, por entender que existe nessa iniciativa um status de inovação tecnológica que precisa ser interrogado, pois se inscreve no interior de uma racionalidade que objetiva o governo das populações e tem como instrumento técnico, para realizar esse fim, uma sociedade controlada por mecanismos de segurança. Para tanto, partimos da análise de três procedimentos efetivados por alguns projetos sociais desenvolvidos por empresas brasileiras - a pesquisa científica, o protagonismo juvenil e a metodologia participativa. A referência de análise são textos de diversas naturezas, veiculados por esses projetos e disponíveis ao acesso público.

El fuego aprisionado : Artillería y pirotecnia en la poesía moral de Quevedo

A primera vista, Quevedo no parece muy amigo de las máquinas de su tiempo. En una pieza de artillería, por ejemplo, ve una invención típica de la ingeniería moderna que amenaza no solamente a la creación divina, sino también a la sociedad estamental. En el caso de la pirotecnia, sin embargo, su actitud hacia la técnica parece más matizada, como se puede ver en su soneto moral sobre el cohete. Si por un lado este artificio se opone a la naturaleza y engaña al hombre, se presenta por otra parte como un equivalente asombroso del texto poético.

El fuego aprisionado : Artillería y pirotecnia en la poesía moral de Quevedo

A primera vista, Quevedo no parece muy amigo de las máquinas de su tiempo. En una pieza de artillería, por ejemplo, ve una invención típica de la ingeniería moderna que amenaza no solamente a la creación divina, sino también a la sociedad estamental. En el caso de la pirotecnia, sin embargo, su actitud hacia la técnica parece más matizada, como se puede ver en su soneto moral sobre el cohete. Si por un lado este artificio se opone a la naturaleza y engaña al hombre, se presenta por otra parte como un equivalente asombroso del texto poético.

El fuego aprisionado : Artillería y pirotecnia en la poesía moral de Quevedo

A primera vista, Quevedo no parece muy amigo de las máquinas de su tiempo. En una pieza de artillería, por ejemplo, ve una invención típica de la ingeniería moderna que amenaza no solamente a la creación divina, sino también a la sociedad estamental. En el caso de la pirotecnia, sin embargo, su actitud hacia la técnica parece más matizada, como se puede ver en su soneto moral sobre el cohete. Si por un lado este artificio se opone a la naturaleza y engaña al hombre, se presenta por otra parte como un equivalente asombroso del texto poético.

Inicial nasal mucosa detachment using piezoelectric device in the Le Fort I osteotomy: A technical note

In maxillary Le Fort I type osteotomy the detachment of the nasal mucosa should be done carefully. Piezoelectric surgery contributed much to increase the safety of osteotomies, despite the initial advantage of minimizing the risk of injury in nervous tissue, mainly in bilateral sagittal split osteotomy; we use the piezoelectric device for the initial detachment of the nasal mucosa in the maxillary osteotomy.

Technical Feasibility and Application of Mechanical Thrombectomy with the Solitaire FR Revascularization Device in Acute Basilar Artery Occlusion

Acute BAO is a devastating neurological condition associated with a poor clinical outcome and a high mortality rate. Recanalization has been identified as a major prognostic factor for good outcome in BAO. Mechanical thrombectomy using retrievable stents is an emerging treatment option for acute stroke. First clinical trials using stent retrievers have shown promising high recanalization rates. However, these studies mainly included large artery occlusions in the anterior circulation with only a few or single cases of BAO. Therefore, the purpose of this study was to evaluate technical feasibility, safety, and efficacy of mechanical thrombectomy using retrievable stent in the treatment of acute BAO.

Technical impediments to a more effective utilization of neutron transmutation doped silicon for high-power device fabrication /

"Issued May 1980."

Technical note : modelling a complex micro-multileaf collimator using the standard BEAMnrc distribution

Purpose: The component modules in the standard BEAMnrc distribution may appear to be insufficient to model micro-multileaf collimators that have tri-faceted leaf ends and complex leaf profiles. This note indicates, however, that accurate Monte Carlo simulations of radiotherapy beams defined by a complex collimation device can be completed using BEAMnrc's standard VARMLC component module.---------- Methods: That this simple collimator model can produce spatially and dosimetrically accurate micro-collimated fields is illustrated using comparisons with ion chamber and film measurements of the dose deposited by square and irregular fields incident on planar, homogeneous water phantoms.---------- Results: Monte Carlo dose calculations for on- and off-axis fields are shown to produce good agreement with experimental values, even upon close examination of the penumbrae.--------- Conclusions: The use of a VARMLC model of the micro-multileaf collimator, along with a commissioned model of the associated linear accelerator, is therefore recommended as an alternative to the development or use of in-house or third-party component modules for simulating stereotactic radiotherapy and radiosurgery treatments. Simulation parameters for the VARMLC model are provided which should allow other researchers to adapt and use this model to study clinical stereotactic radiotherapy treatments.

Physiological, perceptual and technical responses to on-court tennis training on hard and clay courts

The aim of this study was to investigate the effect of court surface (clay v hard-court) on technical, physiological and perceptual responses to on-court training. Four high-performance junior male players performed two identical training sessions on hard and clay courts, respectively. Sessions included both physical conditioning and technical elements as led by the coach. Each session was filmed for later notational analysis of stroke count and error rates. Further, players wore a global positioning satellite device to measure distance covered during each session; whilst heart rate, countermovement jump distance and capillary blood measures of metabolites were measured before, during and following each session. Additionally a respective coach and athlete rating of perceived exertion (RPE) were measured following each session. Total duration and distance covered during of each session were comparable (P>0.05; d<0.20). While forehand and backhands stroke volume did not differ between sessions (P>0.05; d<0.30); large effects for increased unforced and forced errors were present on the hard court (P>0.05; d>0.90). Furthermore, large effects for increased heart rate, blood lactate and RPE values were evident on clay compared to hard courts (P>0.05; d>0.90). Additionally, while player and coach RPE on hard courts were similar, there were large effects for coaches to underrate the RPE of players on clay courts (P>0.05; d>0.90). In conclusion, training on clay courts results in trends for increased heart rate, lactate and RPE values, suggesting sessions on clay tend towards higher physiological and perceptual loads than hard courts. Further, coaches appear effective at rating player RPE on hard courts, but may underrate the perceived exertion of sessions on clay courts.

Nickel Electrode for Improving Current Density in Organic Electronic Device

In this work, polymer diode performance was analyzed by using nickel as anode electrode from two kinds of nickel as starting materials, namely nickel wire Ni{B} and nickel nano-particle Ni{N}. Metal electrode surface roughness and grain morphology were investigated by atomic force microscope and scanning electron microscope, respectively. Current-voltage (I-V) and capacitance-voltage (C-V) characteristics were measured for the fabricated device at room temperature. Obtained result from the current-voltage characteristics shows an increment in the current density for nickel nano-particle top electrode device. The increase in the current density could be due to a reduction in built-in voltage at P3HT/Ni{N} interface.

Curvature Management in Buffer Layer for Device Quality GaN Growth on Si (111)

An efficient buffer layer scheme has been designed to address the issue of curvature management during metalorganic chemical vapour deposition growth of GaN on Si (111) substrate. This is necessary to prevent cracking of the grown layer during post-growth cooling down from growth temperature to room temperature and to achieve an allowable bow (<40 m) in the wafer for carrying out lithographic processes. To meet both these ends simultaneously, the stress evolution in the buffer layers was observed carefully. The reduction in precursor flow during the buffer layer growth provided better control over curvature evolution in the growing buffer layers. This has enabled the growth of a suitable high electron mobility transistor (HEMT) stack on 2'' Si (111) substrate of 300 m thickness with a bow as low as 11.4 m, having a two-dimensional electron gas (2DEG) of mobility, carrier concentration, and sheet resistance values 1510 cm(2)/V-s, 0.96 x 10(13)/cm(2), and 444 /, respectively. Another variation of similar technique resulted in a bow of 23.4 m with 2DEG mobility, carrier concentration, and sheet resistance values 1960 cm(2)/V-s, 0.98 x 10(13)/cm(2), and 325 /, respectively.

Some Key Technics of Drop Tower Experiment Device of National Microgravity Laboratory (China) (NMLC)

Drop tower is an important ground based facility for microgravity science experiment. The technical performances of the drop tower NMLC are advanced compared with similar facilities in the US, Germany and Japan. The main components such as drop capsule, deceleration devices, release mechanism present its advantages and creativities.