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result(s) for
"JPA"
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The age of the democratic revolution
2014
For the Western world, the period from 1760 to 1800 was the great revolutionary era in which the outlines of the modern democratic state came into being. Here for the first time in one volume is R. R. Palmer's magisterial account of this incendiary age. Palmer argues that the American, French, and Polish revolutions-and the movements for political change in Britain, Ireland, Holland, and elsewhere-were manifestations of similar political ideas, needs, and conflicts. Palmer traces the clash between an older form of society, marked by legalized social rank and hereditary or self-perpetuating elites, and a new form of society that placed a greater value on social mobility and legal equality.
Featuring a new foreword by David Armitage, this Princeton Classics edition ofThe Age of the Democratic Revolutionintroduces a new generation of readers to this enduring work of political history.
An array of two JPAs in a quantum two-mode squeezed radar
by
Norouzi, Milad
,
Seyed-Yazdi, Jamileh
,
Hosseiny, Seyed Mohammad
in
639/766/25
,
639/766/483
,
Array of two-JPA
2025
Quantum two-mode squeezed (QTMS) radar, inspired by quantum illumination but without joint measurements in the receiver, has shown promise in target detection. However, the current prototype of quantum radar, using full-microwave superconducting components, faces challenges in achieving long-range performance. In this study, we propose the integration of an array of Josephson parametric amplifiers (JPAs) in a dilution refrigerator to enhance the performance of QTMS quantum radar. Through the evaluation of signal-to-noise ratio (SNR) and receiver operating characteristic (ROC) metrics, we demonstrate the effectiveness of this enhancing strategy. Our results indicate that the presence of an array of two JPAs significantly improves both the SNR and the detection probability compared to a single JPA configuration, thereby boosting the overall performance of QTMS radar. The key factor of this improvement is the cross-correlation between JPAs, which has a notable impact on the analytical outcomes of the quantum radar. This research provides valuable insights to engineers who want to optimize the design of advanced quantum QTMS radar systems.
Journal Article
Intellectuals and (counter-)politics
2014
Contemporary forms of capitalism and the state require close analytic attention to reveal the conditions of possibility for effective counter-politics. On the other hand the practice of collective politics needs to be studied through historical ethnography if we are to understand what might make people's actions effective. This book suggests a research agenda designed to maximize the political leverage of ordinary people faced with ever more remote states and technologies that make capitalism increasingly rapacious. Gavin Smith opens and closes this series of interlinked essays by proposing a concise framework for untangling what he calls \"the society of capital\" and subsequently a potentially controversial way of seeing its contemporary features. This book tackles the political conundrums of our times and asks what roles intellectuals might play therein.
Investigation of the JPA-Bandwidth Improvement in the Performance of the QTMS Radar
by
Seyed-Yazdi, Jamileh
,
Hosseiny, Seyed Mohammad
,
Livreri, Patrizia
in
Analysis
,
Bandwidths
,
Detectors
2023
Josephson parametric amplifier (JPA) engineering is a significant component in the quantum two-mode squeezed radar (QTMS) to enhance, for instance, radar performance and the detection range or bandwidth. We simulated a proposal of using engineered JPA (EJPA) to enhance the performance of a QTMS radar. We defined the signal-to-noise ratio (SNR) and detection range equations of the QTMS radar. The engineered JPA led to a remarkable improvement in the quantum radar performance, i.e., a large enhancement in SNR of about 6 dB more than the conventional QTMS radar (with respect to the latest version of the QTMS radar and not to the classical radar), a substantial improvement in the probability of detection through far fewer channels. The important point in this work was that we expressed the importance of choosing suitable detectors for the QTMS radars. Finally, we simulated the transmission of the signal to the target in the QTMS radar and obtained a huge increase in the QTMS radar range, up to 482 m in the current study.
Journal Article
Performance Analysis and Improvement for CRUD Operations in Relational Databases from Java Programs Using JPA, Hibernate, Spring Data JPA
2024
The role of databases is to allow for the persistence of data, no matter if they are of the SQL or NoSQL type. In SQL databases, data are structured in a set of tables in the relational database model, grouped in rows and columns. CRUD operations (create, read, update, and delete) are used to manage the information contained in relational databases. Several dialects of the SQL language exist, as well as frameworks for mapping Java classes (models) to a relational database. The question is what we should choose for our Java application, and why? A comparison of the most frequently used relational database management systems, mixed with the most frequently used frameworks should give us some guidance about when to use what. The evaluation is conducted based on the time taken for each CRUD operation to run, from thousands to hundreds of thousands of entries, using the possible combinations in the relational database system and the framework. Aiming to assess and improve the performance, the experiments included the possibility of warming-up the Java Virtual Machine before the execution of queries. Also, the research investigated the time spent using different methods of code to determine the critical regions (bottlenecks). Thus, the conclusions provide a comprehensive overview of the performances of Java applications accessing databases depending on the suite decisions considering the database type, the framework in use, and the type of operation, with clear comparisons between the alternatives, the key findings of the advantages and drawbacks of each of them, and supporting architects and developers in their technological decisions and improving the speed of their programs.
Journal Article
Duplication of 7q34 is specific to juvenile pilocytic astrocytomas and a hallmark of cerebellar and optic pathway tumours
by
Hawkins, C
,
Albrecht, S
,
Sader, E
in
Adolescent
,
Astrocytoma - genetics
,
Astrocytoma - metabolism
2009
Background:
Juvenile pilocytic astrocytomas (JPA), a subgroup of low-grade astrocytomas (LGA), are common, heterogeneous and poorly understood subset of brain tumours in children. Chromosomal 7q34 duplication leading to fusion genes formed between
KIAA1549
and
BRAF
and subsequent constitutive activation of BRAF was recently identified in a proportion of LGA, and may be involved in their pathogenesis. Our aim was to investigate additional chromosomal unbalances in LGA and whether incidence of 7q34 duplication is associated with tumour type or location.
Methods and results:
Using Illumina-Human-Hap300-Duo and 610-Quad high-resolution-SNP-based arrays and quantitative PCR on genes of interest, we investigated 84 paediatric LGA. We demonstrate that 7q34 duplication is specific to sporadic JPA (35 of 53 – 66%) and does not occur in other LGA subtypes (0 of 27) or NF1-associated-JPA (0 of 4). We also establish that it is site specific as it occurs in the majority of cerebellar JPA (24 of 30 – 80%) followed by brainstem, hypothalamic/optic pathway JPA (10 of 16 – 62.5%) and is rare in hemispheric JPA (1 of 7 – 14%). The MAP-kinase pathway, assessed through ERK phosphorylation, was active in all tumours regardless of 7q34 duplication. Gain of function studies performed on hTERT-immortalised astrocytes show that overexpression of wild-type
BRAF
does not increase cell proliferation or baseline MAPK signalling even if it sensitises cells to EGFR stimulation.
Conclusions and interpretation:
Our results suggest that variants of JPA might arise from a unique site-restricted progenitor cell where 7q34 duplication, a hallmark of this tumour-type in association to MAPK-kinase pathway activation, potentially plays a site-specific role in their pathogenesis. Importantly, gain of function abnormalities in components of MAP-Kinase signalling are potentially present in all JPA making this tumour amenable to therapeutic targeting of this pathway.
Journal Article
Monitoring democracy
2012
In recent decades, governments and NGOs--in an effort to promote democracy, freedom, fairness, and stability throughout the world--have organized teams of observers to monitor elections in a variety of countries. But when more organizations join the practice without uniform standards, are assessments reliable? When politicians nonetheless cheat and monitors must return to countries even after two decades of engagement, what is accomplished? Monitoring Democracy argues that the practice of international election monitoring is broken, but still worth fixing. By analyzing the evolving interaction between domestic and international politics, Judith Kelley refutes prevailing arguments that international efforts cannot curb government behavior and that democratization is entirely a domestic process. Yet, she also shows that democracy promotion efforts are deficient and that outside actors often have no power and sometimes even do harm.
Analyzing original data on over 600 monitoring missions and 1,300 elections, Kelley grounds her investigation in solid historical context as well as studies of long-term developments over several elections in fifteen countries. She pinpoints the weaknesses of international election monitoring and looks at how practitioners and policymakers might help to improve them.
Microwave Photon Emission in Superconducting Circuits
2023
Quantum computing requires a novel approach to store data as quantum states, opposite to classical bits. One of the most promising candidates is entangled photons. In this manuscript, we show the photon emission in the range of microwave frequencies of three different types of superconducting circuits, a SQUID, a JPA, and a JTWPA, often used as low-noise parametric amplifiers. These devices can be operated as sources of entangled photons. We report the experimental protocol used to produce and measure microwave radiation from these circuits, as well as data simulations. The collected spectra are obtained by performing single-tone measurements with a direct rf pump on the devices; the output spectra at low powers (below −100 dBm) are well interpreted by the dynamical Casimir model, while at high powers (above −100 dBm) the system is well described by the Autler–Townes fluorescence of a three-level atom.
Journal Article
Masters of the universe
by
Daniel Stedman Jones
in
20Th Century
,
Angebotsorientierte Wirtschaftspolitik
,
Business & Economics
2012,2014
How did American and British policymakers become so enamored with free markets, deregulation, and limited government? This book--the first comprehensive transatlantic history of the rise of neoliberal politics--presents a surprising answer. Based on archival research and interviews with leading participants in the movement,Masters of the Universetraces the ascendancy of neoliberalism from the academy of interwar Europe to supremacy under Reagan and Thatcher and in the decades since. Daniel Stedman Jones argues that there was nothing inevitable about the victory of free-market politics. Far from being the story of the simple triumph of right-wing ideas, the neoliberal breakthrough was contingent on the economic crises of the 1970s and the acceptance of the need for new policies by the political left.
Masters of the Universedescribes neoliberalism's road to power, beginning in interwar Europe but shifting its center of gravity after 1945 to the United States, especially to Chicago and Virginia, where it acquired a simple clarity that was developed into an uncompromising political message. Neoliberalism was communicated through a transatlantic network of think tanks, businessmen, politicians, and journalists that was held together by Friedrich Hayek and Milton Friedman. After the collapse of Bretton Woods in 1971, and the \"stagflation\" that followed, their ideas finally began to take hold as Keynesianism appeared to self-destruct. Later, after the elections of Reagan and Thatcher, a guileless faith in free markets came to dominate politics.
Fascinating, important, and timely, this is a book for anyone who wants to understand the history behind the Anglo-American love affair with the free market, as well as the origins of the current economic crisis.
Radical Resection of Cerebellar Juvenile Pilocytic Astrocytoma - A 22-Year Survival: A Case Report
2020
Juvenile pilocytic astrocytoma (JPA) is a low-grade glioma, a most common astrocytoma in young patients. It is a tumor with relatively well-defined margins. Pilocytic astrocytomas (PA) comprise approximately 5-6% of all gliomas. Gross total resection ensures a radical cure of patients and long-time survival. In the literature, the data on the survival rate of more than 20 years is scarce. A 5.5-year old boy with a history of 3-month complaints of headache, dizziness, and vomiting was diagnosed after CT to harbour a hypodense cerebellar tumor mass, situated in the midline-right hemisphere. The compression of the fourth ventricle resulted in rostral hydrocephalus with transependymal resorption. Within a week, a VP shunt was applied, followed by a radical Nafziger-Town operation. Gross total resection of the tumor was achieved. Profound clinical improvement was observed immediately after the operation. Postoperative CT scans, including the ones 22 years after the operation, remained practically normal. The patient is now 28-year old and is a perspective economist now. He leads a healthy working life. In general, the prognosis is excellent. If the tumor is completely removed by surgery, the chances of being “cured” are very high. Pilocytic astrocytoma has a five-year survival rate in over 96 percent in children and young adults, which is one of the highest survival rates of any brain tumor. However, there is even a small percent possibility for malignant transformation (1-4%).
Journal Article