Superconducting Qubits Coupled to Nanoelectromechanical Resonators: An Architecture for Solid-State Quantum Information Processing

We describe the design for a scalable, solid-state quantum-information-processing architecture based on the integration of GHz-frequency nanomechanical resonators with Josephson tunnel junctions, which has the potential for demonstrating a variety of single- and multi-qubit operations critical to quantum computation. The computational qubits are eigenstates of large-area, current-biased Josephson junctions, manipulated and measured using strobed external circuitry. Two or more of these phase qubits are capacitively coupled to a high-quality-factor piezoelectric nanoelectromechanical disk resonator, which forms the backbone of our architecture, and which enables coherent coupling of the qubits. The integrated system is analogous to one or more few-level atoms (the Josephson junction qubits) in an electromagnetic cavity (the nanomechanical resonator). However, unlike existing approaches using atoms in electromagnetic cavities, here we can individually tune the level spacing of the ``atoms'' and control their ``electromagnetic'' interaction strength. We show theoretically that quantum states prepared in a Josephson junction can be passed to the nanomechanical resonator and stored there, and then can be passed back to the original junction or transferred to another with high fidelity. The resonator can also be used to produce maximally entangled Bell states between a pair of Josephson junctions. Many such junction-resonator complexes can assembled in a hub-and-spoke layout, resulting in a large-scale quantum circuit. Our proposed architecture combines desirable features of both solid-state and cavity quantum electrodynamics approaches, and could make quantum information processing possible in a scalable, solid-state environment.Comment: 20 pages, 14 separate low-resolution jpeg figure

Agribusiness Extension: The Past, Present, and Future?

The IFAMR is publish by (IFAMA) the International Food and Agribusiness Management Association. www.ifama.orgagribusiness extension, future, Agribusiness, Teaching/Communication/Extension/Profession, Q130,

IMPORTANCE OF VARIOUS ROLES AND EVALUATION METHODS OF EXTENSION ECONOMISTS AS VIEWED BY EXTENSION ADMINISTRATORS, DEPARTMENT HEADS, AND SPECIALISTS

A survey of extension administrators, department heads, and extension specialists was conducted to determine the best methods for evaluating the performance of extension economists. The results demonstrate how different groups view the relative importance of the various roles played by extension economists and how important the specific attributes of extension economists are within each role. In general all three groups agree on the most important roles and attributes. However, important differences among the groups do exist about the relative importance of certain activities.Teaching/Communication/Extension/Profession,

If You Can't Trust the Farmer, Who Can You Trust? The Effect of Certification Types on Purchases of Organic Produce

An information asymmetry exists in the market for organic produce since consumers cannot determine whether produce is organically or conventionally grown. Various methods may solve this problem including signaling, reputation, and certification. Signaling and reputation may not work well, because signals are noisy, and reputation may be difficult for a producer to establish. Certification of the farm and its growing methods shows the most promise. A survey instrument testing the efficacy of certification is presented along with empirical analysis suggesting that no notable difference existed between independent certification methods, although independent certification had significantly different effects than self-certification.Asymmetric information, Certification, Ordered probit, Organic produce, Agribusiness,

An American BSE Crisis: Has it affected the Value of Traceability and Country-of-Origin Certifications for US and Canadian Beef?

With a BSE incident in the United States (US) in December of 2003, questions arose about the effect of the incident on consumers in the US. The purpose of this paper is to determine if traceability systems for beef can help preserve consumer demand following the discovery of BSE. Auctions were conducted approximately 3 weeks before and after the December 2003 BSE incident in the U.S It was found that overall there was no effect on the size of the bribes needed by the BSE incidence. However, for some groups there were important changes. The results indicate that information about traceability and country of origin is valuable to consumers. They also suggest that greater uncertainty about certifications and assurances for beef existed among the participants after December 23rd than before December 23rd.BSE, Traceability, Country-of-origin, Beef market, Auctions, Food Consumption/Nutrition/Food Safety, Livestock Production/Industries,

The Potential Impact of a Proposed Ban on the Sale of U.S. Horses for Slaughter and Human Consumption

Both federal and state governments in the United States are being asked to enact laws that would make slaughtering of horses for human consumption illegal. In the past, the United States was one of the principal exporters of horsemeat to Europe. This paper examines the impacts of a proposed ban on the U.S. horse industry and the U.S. export market for horsemeat. Findings indicate a loss of approximately $300 per horse in the United States as a result of such a ban. The supply of U.S. exported horsemeat has declined during the past decade. The results suggest that the most significant factors influencing this decline are lower real prices and competing imports.horse slaughter, horsemeat, meat exports, Agricultural and Food Policy, Livestock Production/Industries,

Measuring Selenoprotein Content in False Map Turtles (Graptemys pseudogeographica) Along the Missouri River

Metals and metalloids are becoming more prevalent in lakes and reservoirs of South Dakota which are toxic and hazardous in high concentrations or when biomagnified through trophic levels. Selenium is of particular concern as it can bind into the structures of proteins in place of other elements, changing protein structure and function within affected organisms. Zebra mussels (Dreissena polymorpha) are an invasive filter-feeding metal-bioaccumulating species that are rapidly spreading upstream through the Missouri River. They can take up selenium and directly transfer it to higher trophic level taxa. False map turtles (Graptemys pseudogeographica) are a common predator of zebra mussels and serve as a model organism to detect selenium levels in higher trophic level organisms. It was predicted that there would be a higher selenoprotein content in turtles residing in downstream vs upstream reservoirs of the Missouri River due the prevalence of zebra mussels downstream that may contribute to dietary selenium intake. To test this hypothesis, false map turtles were randomly sampled from Lake Francis Case (upstream) and the 59 Mile Stretch of the Missouri River (downstream). Blood samples were randomly selected from both sites and tested for selenoprotein concentration using an ELISA assay. Based on a Bayesian statistical model, there is a 96.3% probability that Lake Francis Case absorbance values are higher than the 59 Mile Stretch absorbance values. Higher absorbance values are indicative of higher concentrations of selenoprotein. These results suggest that the turtles of the 59 Mile Stretch are exposed to lower levels of selenium than those of Lake Francis Case. This indicates that there are other factors to consider. More work must be done to understand the reason for variance in selenoprotein absorbance values between sites and what impact the invasive zebra mussels truly have on other marine inhabitants

Relationship between Narcissism, the Economy, and the Pandemic

Narcissists are more likely to be found in individualistic cultures. The study focuses on the economic decline associated from the pandemic and the reduced narcissism levels in the population. Narcissism levels from the University of South Alabama undergraduate students would be lower in Fall 2020 compared to Fall 2019. This was assessed using students enrolled in introductory psychology courses during either Fall 2019 or Fall 2020 semesters who completed the Narcissistic Personality Inventory during a subject pool registration process. Predictions were made that the NPI scores would be lower for the Fall 2020 sample compared to the Fall 2019 sample

What does neuroscience offer us in understanding cognitive therapy and person-centred therapy for depression? A realist synthesis review

A need for increased access to effective therapies for depression has been identified in the United Kingdom. There has been significant investment in Cognitive Therapy but a perceived lack of funding for alternatives. This study takes a pluralistic perspective in enquiring into what neuroscience offers us in understanding Cognitive Therapy and Person-Centred Therapy for Depression. This realist synthesis review provides a background of the theories, mapped for commonality in causality and therapy for depression. It examines neuroscience theory of depression and fMRI evidence of the effects of Cognitive Therapy and Person-Centred therapeutic concepts on the brain. This review highlights some of the limitations of scanning technology and the way that research within ‘schools’ interprets evidence from the perspective of a particular theory. This has led to evidence being presented for the case of cognitive control of emotion. The alternate hypothesis for emotional regulation was not tested in the studies reviewed despite being observed as the mechanism of change in drug therapy for depression. Since all disciplines and theories reviewed suggest the involvement of both cognitive and affective processes further research is suggested to clarify their interaction

Behavior of Petrie Lines in Certain Edge-Transitive Graphs

We survey the construction and classification of one-, two- and infinitely-ended members of a class of highly symmetric, highly connected infinite graphs. In addition, we pose a conjecture concerning the relationship between the Petrie lines and ends of some infinitely-ended members of this class