Topological hybrid electron-hole Cooper pairing

We consider electron--hole Cooper pair condensation in a heterostructure formed by a topological insulator film and a quantum well. We argue that the helical nature of the Dirac electronic states at the topological insulator surface results in the presence of two competing degenerate pairing channels. The corresponding paired states have an unconventional symmetry in the order parameter describing the Cooper pair condensate, can be classified by the topological Chern invariant, and are topologically distinct. We discuss possible manifestations of the nontrivial topology, including the formation of chiral states at the domain walls separating two distinct states, quantized anomalous transport phenomena, and connections with chiral topological superconductivity.Comment: 9 pages, 4 figure

Continuous Monitoring of Dynamic Levels of Sepsis-Associated Biomarkers in Blood for Early Diagnosis

Sepsis is a general diagnosis related to a dysregulated immune response to a source of infection that, if left untreated, will most likely result in organ failure and eventual death. Sepsis affects 49 million people annually, and is responsible for 11 million annual deaths, according to Jarczak 1. A recent study has shown that over 80% of sepsis deaths may be preventable with earlier diagnosis and treatment, and that the risk of mortality increases by 8% for every hour that sepsis goes untreated 5. Thus, our team identified that the timeliness of sepsis diagnosis is a paramount healthcare need. We further identified the shortcomings of current diagnostic methods to be: 1) the dominance of prognostic tests which make up for diagnostic capabilities, 2 2) long incubation periods in traditional tests like blood cultures, and 3) reliance on downstream indications of organ failure. Inspired by the Third International Consensus on Sepsis, 2 we recognize that a paradigm shift in sepsis patient diagnostics needs to occur in order to adequately address the needs of early diagnosis. To meet these needs, this project consists of three design goals: 1) sample collection and patient accessibility, 2) interface between patient withdrawal and sample deposition, and 3) biomarker detection methodology. Our vision is that a tapered optical fiber within a microfluidic device, conjugated with antibody-based probes, is a promising platform to continually measure biomarkers from blood that are relevant for the early detection of sepsis. In this thesis we describe the steps taken towards these goals including subsystem manufacturing, optical and fluidic testing, and reagent characterization

Parent-child relationships and skill in reading

Thesis (Ed.M.)--Boston UniversityThe purpose of this study is to find the relationship between the parental attitudes of acceptance and rejection and skill in reading in a group of fifty-eight male students from a private preparatory school. Parental attitudes tend to fall into two main classifications: acceptance and rejection. The attitude of parental acceptance is closely related to the sentiment of love. The attitude of parental rejection is closely related to the sentiment of hate. Many parents have ambivalent feelings of love and hate for their children, but there is a tendency for either acceptance or rejection to be predominant in the total parental relationship with the child

Conversando heteronimicamente com a esquizoanálise: a serviço de que olhar está a psicologia?

Para discutir a questão proposta no título do trabalho – a serviço de que olhar está a psicologia? –, exponho e exploro aqui os sentidos de alguns conceitos esquizoanalíticos, como rizoma, corpo sem órgãos, concepções de subjetividade e desejo, entre outros; conceitos estes que, a meu ver, são de fundamental importância para tal discussão. O formato escolhido para abordar esta discussão foi o de um diálogo entre mim, textos esquizoanalíticos e poemas do poeta Fernando Pessoa e seus heterônimos. A heteronímia deste poeta dialoga diretamente com a noção de subjetividade compreendida pela esquizoanálise e usada como base neste trabalho, bem como muitos temas tratados em seus poemas vão ao encontro da discussão que está aqui sendo feit

Long-term Hybrid Stabilization of the Carrier-Envelope Phase

Controlling the carrier envelope phase (CEP) in mode-locked lasers over practically long timescales is crucial for real-world applications in ultrafast optics and precision metrology. We present a hybrid solution that combines a feed-forward technique to stabilize the phase offset in fast timescales and a feedback technique that addresses slowly varying sources of interference and locking bandwidth limitations associated with gain media with long upper-state lifetimes. We experimentally realize the hybrid stabilization system in an Er:Yb:glass mode-locked laser and demonstrate 75 hours of stabilization with integrated phase noise of 14 mrad (1 Hz to 3 MHz), corresponding to around 11 as of carrier to envelope jitter. Additionally, we examine the impact of environmental factors, such as humidity and pressure, on the long-term stability and performance of the system.Comment: 11 pages, 6 figures, 1 table; to be published in Optics Express; revisions include adjustment of some citations, additions to section 2, and added information in table

Parent-child relationships and skill in reading

Thesis (Ed.M.)--Boston UniversityThe purpose of this study is to find the relationship between the parental attitudes of acceptance and rejection and skill in reading in a group of fifty-eight male students from a private preparatory school. Parental attitudes tend to fall into two main classifications: acceptance and rejection. The attitude of parental acceptance is closely related to the sentiment of love. The attitude of parental rejection is closely related to the sentiment of hate. Many parents have ambivalent feelings of love and hate for their children, but there is a tendency for either acceptance or rejection to be predominant in the total parental relationship with the child

Pëtr Semënov-Tian-Chanski et Nicolas Semënov : deux frères au service de la réforme du servage en Russie

Pëtr et Nicolas Semënov sont des représentants typiques de la noblesse libérale qui possédait des terres avec leurs paysans, mais qui réfléchissait depuis longtemps sur le servage. Pëtr Semënov (1827-1914) — depuis 1906 Semënov-Tian-Chanski —, connu davantage comme géographe avant les réformes, étudiait depuis longtemps déjà les divers aspects du problème agraire en Russie et en Europe. Cela lui permit de participer activement à la préparation de l’abolition du servage, en tant qu’expert et dirigeant à la Commission de rédaction, dans la préparation de la réforme. Nicolas Petrovitch Semënov (1823-1904), juriste, ober-procureur d'un département du Sénat, participait aux travaux de la Commission, en tant que membre permanent, représentant le ministère de la Justice. Après l’achèvement de la réforme, les deux frères ont laissé beaucoup de témoignages importants sur la préparation du Statut et du Manifeste du 19 février 1861 et ont continué jusqu’à leur fin de s’intéresser au sort des paysans émancipés. Ils défendaient les intérêts des paysans, sans oublier ceux des propriétaires, réclamaient la libération des paysans avec la terre, mais dans des limites acceptables par les propriétaires. Leurs conceptions étaient proches des idées des slavophiles, comme le montrent les déclarations enflammées de Nicolas Petrovitch en faveur de la commune paysanne.Petr and Nikolai Semenov are typical representatives of liberal gentry, who were landlords and owners of serfs, but both of them were preoccupied for a long time with the problem of serfdom. Petr Petrovich Semenov (1827–1914)—since 1906 Semenov-Tian-Shanski—was more famous as geographer, and he devoted much of his time to studying various aspects of the agrarian problems in Russia and Europe. That enabled him to take active part in the preparatory activities aimed at abolition of serfdom as qualified expert and head of administrative affairs of the Editing Commissions. Nikolaï Petrovich Semenov (1823–1904), jurist, Ober-Procurator of one of the Senate Departments, participated in the Commissions activities as its member representing Ministry of Justice. When the Emancipation reform took place, the two brothers left important evidences regarding preparation of the Tsar’s Emancipation Manifesto and the Peasantry Regulations dated from February 19, 1861 and continued to be interested in the fate of the emancipated peasants. They were defending interests of peasants without forgetting the interests of landlords at the same time. Both supported idea of freeing peasants with some land, but within limits acceptable for the landlords. Their conceptual idea was close to the ideas of the Slavophil as may be seen from passionate speeches by of Nikolai Semenov devoted to conservation of agricultural communities (called obshchina) in Russia.Пётр и Николай Семёновы — типичные представители либерального дворянства, которое имело земли с крестьянами, но давно размышляло о проблеме крепостного права. Пётр Петрович Семёнов (1827-1914) — с 1906-го года Семёнов-Тян-Шанский — более известный накануне реформы, как географ, давно изучал разные аспекты аграрной проблемы в России и в Европе. Это позволяло ему активно участвовать в подготовке отмены крепостного права в качестве эксперта и заведующего делами Редакционных комиссий по подготовке реформы. Николай Петрович Семёнов (1823-1904), юрист, обер-прокурор департамента Сената, участвовал в работах Комиссий в качестве постоянного члена-представителя Министерства юстиции. После проведения реформы оба брата оставили много важных свидетельств о подготовке Положения и Манифеста 19 февраля 1861 года и продолжали до конца своих дней живо интересоваться судьбой освобождённых крестьян. Они защищали интересы крестьян, не забывая и об интересах помещиков, выступали за освобождение крестьян с землёй, но в доступных для помещиков пределах. Их концепция была близка к идеям славянофилов, как показывают горячие выступления Николая Петровича в пользу сохранения сельской общины

I is for Agency: Education, Social Justice, and Auto/Biographical Practices

In this polyphonic pedagogical essay, six members of the Department of English at the University of Puerto Rico at Mayagüez discuss their incorporation of auto/biographical acts into course syllabi for the purpose of facilitating social justice in and through education. Drawing from disciplinarily diverse faculty members holding different contractual positions within the university, this essay demonstrates the widespread need for creating space for student voices as means of supporting agency on- and off-campus, especially in times of disaster, tragedy, and crisis