Analysis of stray current induced by cathodic protection on steel-framed masonry structures

Cathodic protection (CP) has been successfully employed to protect steel-framed masonry buildings from corrosion related damage. When a CP system is installed to protect the structural members, other metallic items which are within the fabric of the structure but are not in direct electrical continuity may suffer from stray current interactions, resulting in accelerated corrosion of the discontinuous items. Therefore, these must be considered when CP systems are designed prior to installation. This paper presents both experimental and numerical studies into the risk and extent of stray current corrosion in steel-framed masonry structures when subject to impressed current cathodic protection. The objective is to allow CP systems to be optimised so that interference is minimised without compromising the technical or cost benefits of this method of corrosion control

Tuning and Backreaction in F-term Axion Monodromy Inflation

We continue the development of axion monodromy inflation, focussing in particular on the backreaction of complex structure moduli. In our setting, the shift symmetry comes from a partial large complex structure limit of the underlying type IIB orientifold or F-theory fourfold. The coefficient of the inflaton term in the superpotential has to be tuned small to avoid conflict with Kahler moduli stabilisation. To allow such a tuning, this coefficient necessarily depends on further complex structure moduli. At large values of the inflaton field, these moduli are then in danger of backreacting too strongly. To avoid this, further tunings are necessary. In weakly coupled type IIB theory at the orientifold point, implementing these tunings appears to be difficult if not impossible. However, fourfolds or models with mobile D7-branes provide enough structural freedom. We calculate the resulting inflaton potential and study the feasibility of the overall tuning given the limited freedom of the flux landscape. Our preliminary investigations suggest that, even imposing all tuning conditions, the remaining choice of flux vacua can still be large enough for such models to provide a promising path to large-field inflation in string theory.Comment: 46 pages, 6 figures; v2: typos removed, references added; v3: references adde

A Jury of Your [Redacted]: The Rise and Implications of Anonymous Juries

Since their relatively recent beginnings in 1977, anonymous juries have been used across a litany of cases: organized crime, terrorism, murder, sports scandals, police killings, and even political corruption. And their use is on the rise. An anonymous jury is a type of jury that a court may empanel in a criminal trial; if one is used, then information that might otherwise identify jurors is withheld from the parties, the public, or some combination thereof, for varying lengths of time. Though not without its benefits, anonymous juries raise questions regarding a defendant’s presumption of innocence, the public’s right to an open trial, the broad discretion afforded to judges, and the impacts of anonymity on juror decisionmaking. In fact, one mock jury experiment found that anonymous jurors returned approximately 15% more guilty verdicts than their non-anonymous counterparts. The anonymous jury is unquestionably a potent tool that affords a court great flexibility to meet the exigencies of a trial head on. But its extraordinary characteristics counsel care in its empanelment. By adopting the Seventh Circuit’s approach to anonymous juries and requiring reasoned verdicts when they are used, anonymous juries may yet become an “inspired, trusted, and effective” instrument of justice

A Jury of Your [Redacted]: The Rise and Implications of Anonymous Juries

Since their relatively recent beginnings in 1977, when the first completely anonymous jury was empaneled in a federal court in New York, anonymous juries have been used across a litany of cases: organized crime, terrorism, murder, sports scandals, police killings, and even gubernatorial corruption. And their use is on the rise. An anonymous jury is a type of jury that a court may empanel in a criminal trial; if one is used, then information that might otherwise identify jurors is withheld from the parties, the public, or some combination thereof, often for varying lengths of time. Though not without its benefits, anonymous juries raise questions regarding a defendant’s presumption of innocence, the public’s right to an open trial, the broad discretion afforded to judges, and the impacts of anonymity on juror decisionmaking. In fact, one mock jury experiment found that anonymous jurors returned approximately 15% more guilty verdicts than their non-anonymous counterparts. The anonymous jury is unquestionably a potent tool that affords a court great flexibility to meet the exigencies of a trial head-on. But its extraordinary characteristics counsel care in its empanelment. By adopting the Seventh Circuit’s approach to anonymous juries and requiring reasoned verdicts when they are used, anonymous juries may become an “inspired, trusted, and effective” instrument of justice

Pharmacological and non-pharmacological treatments for the Neonatal Abstinence Syndrome (NAS).

Neonatal abstinence syndrome is defined by signs and symptoms of withdrawal that infants develop after intrauterine maternal drug exposure. All infants with documented in utero opioid exposure, or a high pre-test probability of exposure should have monitoring with a standard assessment instrument such as a Finnegan Score. A Finnegan score of \u3e8 is suggestive of opioid exposure, even in the absence of declared use during pregnancy. At least half of infants in most locales can be treated without the use of pharmacologic means. For this reason, symptom scores will drive the decision for pharmacologic therapy. Nevertheless, all infants, regardless of initial manifestations, should be first be managed with non-pharmacologic approaches which in turn, should not be considered as the sole alternative to drug therapy, but rather, as the base upon which all patients are treated. Those who continue to have symptoms despite supportive care should be pharmacologically treated, which in the most severe cases, is life-saving

A Jury of Your [Redacted]: The Rise and Implications of Anonymous Juries

Since their relatively recent beginnings in 1977, anonymous juries have been used across a litany of cases: organized crime, terrorism, murder, sports scandals, police killings, and even political corruption. And their use is on the rise. An anonymous jury is a type of jury that a court may empanel in a criminal trial; if one is used, then information that might otherwise identify jurors is withheld from the parties, the public, or some combination thereof, for varying lengths of time. Though not without its benefits, anonymous juries raise questions regarding a defendant’s presumption of innocence, the public’s right to an open trial, the broad discretion afforded to judges, and the impacts of anonymity on juror decisionmaking. In fact, one mock jury experiment found that anonymous jurors returned approximately 15% more guilty verdicts than their non-anonymous counterparts. The anonymous jury is unquestionably a potent tool that affords a court great flexibility to meet the exigencies of a trial head on. But its extraordinary characteristics counsel care in its empanelment. By adopting the Seventh Circuit’s approach to anonymous juries and requiring reasoned verdicts when they are used, anonymous juries may yet become an “inspired, trusted, and effective” instrument of justice

Tweeting Strategy: Military Social Media Use as Strategic Communication

Many Western militaries now actively engage with various social media platforms. The starting point for my dissertation research was this question: how does the military use social media? Considering the Canadian Armed Forces’ use of Twitter as a case study, I collected over 14,000 tweets from four Twitter accounts of the Canadian Armed Forces (CAF), the Canadian Army, the Royal Canadian Navy, and the Royal Canadian Air Force with some tweets as old as September 2012 and the most recent tweets from December 2015. I employed Grounded Theory Method to analyze these tweets, which revealed four themes — organization, history, preparedness, and partnership. These themes create an image of CAF as a Canadian institution and a military one, as they speak to the many war and other combat operations that the Canadian Armed Forces have engaged in at the behest of the government. A literature review conducted simultaneously with the analysis uncovered the International Relations literature on strategic narratives and the Organizational/Military Studies literature on strategic communication. The main finding is that the Canadian Armed Forces are using social media for the strategic communication of government strategic narratives because the norms of civil-military relations require the military to follow government orders and prevent the military from using social media as intended because social media tend to be political whereas the military has to be “apolitical.” The military, thus, maintains an “apolitical” image by communicating what the government wishes it to communicate, even though the government’s narrative can be political. Government strategic narratives frame organizational strategic communication, while organizational strategic communication supports government strategic narratives

Influence of shear reinforcement corrosion on the performance of under-reinforced concrete beams

The in-service performance of reinforced concrete beams can be severely affected through cor-rosion of the steel reinforcement when it becomes subjected to harsh corrosive environments containing chlo-rides and carbon dioxide. In such instances, corrosion is likely to occur in the steel reinforcement, with the expansive nature of the corrosion products likely to induce cracking and spalling of the concrete. A loss of structural integrity (stiffness) will occur and this can severely influence the serviceability of the member. The purpose of this paper is to investigate the relationship between degree of corrosion and loss of stiffness in corrosion damaged under-reinforced concrete beams. Beams (100mm x 150mm cross section) were subjected to accelerated corrosion in the laboratory and subsequently tested in flexure to failure. The paper reports on the results of these tests and relates the degree of corrosion in the main steel to the percentage loss in stiffness in the concrete beams