Water Quality Trading Markets for the Kentucky River Basin: A Point Source Profile

This study assessed the feasibility and suitability of a Water Quality Trading (WQT) program within the Kentucky River Basin (KRB). The study’s focal point was based on five success factors of a WQT program: environmental suitability, geospatial orientation, participant availability, regulatory incentive, and economic incentive. The study utilized these five success factors, geographical characteristics, and Discharge Monitoring Reports (DMR) to assess the feasibility of a WQT program. The assessment divided the KRB into five eight digit Hydrologic Unit Codes (HUC), North, Middle, and South Fork, Middle Basin, and Lower Basin, to determine regional impacts caused by the nutrient PSs. Individual nutrient profiles were generated to show the number of point sources (PS) operating in the KRB, their geospatial orientation to one another, and their permitted nutrient limits and nutrient discharges in form of total phosphorus (TP), total nitrogen (TN), and total nitrogen (as ammonia) (TA). Findings suggest trading is highly unlikely for TP and TN PSs due to the lack of regulatory standards, limited number of TN and TP PSs, and an inadequate demand for offset credits. Trading is also unlikely in all the HUC 8 watersheds except for the Lower Basin due to the lack of nutrient impaired waters. Key Words: Point Source, Non-Point Source, Water Quality Trading, TMDL, Impaired Water

Legal Malpractice in Virginia: Tort or Contract?

A client who attempts to recover from an attorney does so because the client feels that the attorney has acted negligently. The concepts of standard of care, negligence, and damages are usually associated with actions in tort. However, while an examination of applicable Virginia law reveals that concepts usually associated with tort apply to legal malpractice, the presence of elements of negligence does not always equal tort

Aiding a Reformed Church into a Multiethnic and Economically Diverse Congregation

Ethnic and economic diversity can be experienced in the local church. There is a biblical undertone in the Scriptures that shows Jesus, the apostles, and Old Testament themes that point to Revelation 7 for the reality of it. This reality can be lived on earth while Christians practice for heaven. While 95 percent of the churches around America remain homogeneous, with intentionality, adequate training, and a willingness to engage in difficult conversations, historically Reformed churches can also experience ethnic and economic diversity within their congregations. Although many churches do not feel the capabilities to become multiethnic and economically diverse, by participating in the PRIME Diversity Action Plan, churches can be trained and walked with in achieving that goal. This DMIN action research project’s purpose is to develop and deploy the PRIME Diversity Action Plan to implement the value of intentionally pursuing and becoming a multiethnic and economically diverse church. Using the diversity plan, new core values will generate a multiethnic and economically diverse church, resembling Revelation 7 and Philippians 2. The PRIME Diversity Action Plan was implemented to gather qualitative data from elders, deacons, leaders, and ethnic minorities attending the same church in order to train, equip, and empower the leadership and pastor to move into church diversity. The results revealed participants grew in their ethnic and economic awareness, their desire to pursue, and their willingness to help cultivate a value for ethnic and economic diversity in the Reformed church

Introduction: International Arbitration and the Courts

What role do national courts play in international arbitration? Is international arbitration an “autonomous dispute resolution process, governed primarily by non-national rules and accepted international commercial rules and practices” where the influence of national courts is merely secondary? Or, in light of the fact that “international arbitration always operates in the shadow of national courts,” is it not more accurate to say that national courts and international arbitration act in partnership? On April 17, 2015, the Pepperdine Law Review convened a group of distinguished authorities from international practice and academia to discuss these and other related issues for a symposium on International Arbitration and the Courts

A platform for time-resolved scanning Kerr microscopy in the near-field

This is the author accepted manuscript. The final version is available from AIP Publishing via the DOI in this record.Time-resolved scanning Kerr microscopy (TRSKM) is a powerful technique for the investigation of picosecond magnetization dynamics at sub-micron length scales by means of the magneto-optical Kerr effect (MOKE). The spatial resolution of conventional (focused) Kerr microscopy using a microscope objective lens is determined by the optical diffraction limit so that the nanoscale character of the magnetization dynamics is lost. Here we present a platform to overcome this limitation by means of a near-field TRSKM that incorporates an atomic force microscope (AFM) with optical access to a metallic AFM probe with a nanoscale aperture at its tip. We demonstrate the near-field capability of the instrument through the comparison of time-resolved polar Kerr images of magnetization dynamics within a microscale NiFe rectangle acquired using both near-field and focused TRSKM techniques at a wavelength of 800 nm. The flux-closure domain state of the in-plane equilibrium magnetization provided the maximum possible dynamic polar Kerr contrast across the central domain wall and enabled an assessment of the magneto-optical spatial resolution of each technique. Line profiles extracted from the Kerr images demonstrate that the near-field spatial resolution was enhanced with respect to that of the focused Kerr images. Furthermore, the near-field polar Kerr signal (∼1 mdeg) was more than half that of the focused Kerr signal, despite the potential loss of probe light due to internal reflections within the AFM tip. We have confirmed the near-field operation by exploring the influence of the tip-sample separation and have determined the spatial resolution to be ∼550 nm for an aperture with a sub-wavelength diameter of 400 nm. The spatial resolution of the near-field TRSKM was in good agreement with finite element modeling of the aperture. Large amplitude electric field along regions of the modeled aperture that lie perpendicular to the incident polarization indicate that the aperture can support plasmonic excitations. The comparable near-field and focused polar Kerr signals suggest that such plasmonic excitations may lead to an enhanced near-field MOKE. This work demonstrates that near-field TRSKM can be performed without significant diminution of the polar Kerr signal in relatively large, sub-wavelength diameter apertures, while development of a near-field AFM probe utilizing plasmonic antennas specifically designed for measurements deeper into the nanoscale is discussed.The authors gratefully acknowledge the financial support of the UK Engineering and Physical Sciences Research Council under Grant No. EP/I038470/1 “A plasmonic antenna for magneto-optical imaging at the deep nanoscale.

Barylambda churchilli, A New Species of Pantolambdidae (Mammalia, Pantodonta) from the Late Paleocene of Western North America

141-155http://deepblue.lib.umich.edu/bitstream/2027.42/48516/2/ID368.pd

Museum bulletin ; no. 1

This report, the first in a series of bulletins from the South Carolina Museum Commission, reports the vascular plants found during a 2.5 year collection in Spartanburg County

Composite-pulse magnetometry with a solid-state quantum sensor

The sensitivity of quantum magnetometers is challenged by control errors and, especially in the solid-state, by their short coherence times. Refocusing techniques can overcome these limitations and improve the sensitivity to periodic fields, but they come at the cost of reduced bandwidth and cannot be applied to sense static (DC) or aperiodic fields. Here we experimentally demonstrate that continuous driving of the sensor spin by a composite pulse known as rotary-echo (RE) yields a flexible magnetometry scheme, mitigating both driving power imperfections and decoherence. A suitable choice of RE parameters compensates for different scenarios of noise strength and origin. The method can be applied to nanoscale sensing in variable environments or to realize noise spectroscopy. In a room-temperature implementation based on a single electronic spin in diamond, composite-pulse magnetometry provides a tunable trade-off between sensitivities in the microT/sqrt(Hz) range, comparable to those obtained with Ramsey spectroscopy, and coherence times approaching T1

Decoherence-protected quantum gates for a hybrid solid-state spin register

Protecting the dynamics of coupled quantum systems from decoherence by the environment is a key challenge for solid-state quantum information processing. An idle qubit can be efficiently insulated from the outside world via dynamical decoupling, as has recently been demonstrated for individual solid-state qubits. However, protection of qubit coherence during a multi-qubit gate poses a non-trivial problem: in general the decoupling disrupts the inter-qubit dynamics, and hence conflicts with gate operation. This problem is particularly salient for hybrid systems, wherein different types of qubits evolve and decohere at vastly different rates. Here we present the integration of dynamical decoupling into quantum gates for a paradigmatic hybrid system, the electron-nuclear spin register. Our design harnesses the internal resonance in the coupled-spin system to resolve the conflict between gate operation and decoupling. We experimentally demonstrate these gates on a two-qubit register in diamond operating at room temperature. Quantum tomography reveals that the qubits involved in the gate operation are protected as accurately as idle qubits. We further illustrate the power of our design by executing Grover's quantum search algorithm, achieving fidelities above 90% even though the execution time exceeds the electron spin dephasing time by two orders of magnitude. Our results directly enable decoherence-protected interface gates between different types of promising solid-state qubits. Ultimately, quantum gates with integrated decoupling may enable reaching the accuracy threshold for fault-tolerant quantum information processing with solid-state devices.Comment: This is original submitted version of the paper. The revised and finalized version is in print, and is subjected to the embargo and other editorial restrictions of the Nature journa