Stacked Transformer for Driver Gain and Receive Signal Splitting

In a high-speed signal transmission system that uses transformer coupling, there is a need to provide increased transmitted signal strength without adding active components. This invention uses additional transformers to achieve the needed gain. The prior art uses stronger drivers (which require an IC redesign and a higher power supply voltage), or the addition of another active component (which can decrease reliability, increase power consumption, reduce the beneficial effect of serializer/deserializer preemphasis or deemphasis, and/or interfere with fault containment mechanisms), or uses a different transformer winding ratio (which requires redesign of the transformer and may not be feasible with high-speed signals that require a 1:1 winding ratio). This invention achieves the required gain by connecting the secondaries of multiple transformers in series. The primaries of these transformers are currently either connected in parallel or are connected to multiple drivers. There is also a need to split a receive signal to multiple destinations with minimal signal loss. Additional transformers can achieve the split. The prior art uses impedance-matching series resistors that cause a loss of signal. Instead of causing a loss, most instantiations of this invention would actually provide gain. Multiple transformers are used instead of multiple windings on a single transformer because multiple windings on the same transformer would require a redesign of the transformer, and may not be feasible with high-speed transformers that usually require a bifilar winding with a 1:1 ratio. This invention creates the split by connecting the primaries of multiple transformers in series. The secondary of each transformer is connected to one of the intended destinations without the use of impedance-matching series resistors

Application Agreement and Integration Services

Application agreement and integration services are required by distributed, fault-tolerant, safety critical systems to assure required performance. An analysis of distributed and hierarchical agreement strategies are developed against the backdrop of observed agreement failures in fielded systems. The documented work was performed under NASA Task Order NNL10AB32T, Validation And Verification of Safety-Critical Integrated Distributed Systems Area 2. This document is intended to satisfy the requirements for deliverable 5.2.11 under Task 4.2.2.3. This report discusses the challenges of maintaining application agreement and integration services. A literature search is presented that documents previous work in the area of replica determinism. Sources of non-deterministic behavior are identified and examples are presented where system level agreement failed to be achieved. We then explore how TTEthernet services can be extended to supply some interesting application agreement frameworks. This document assumes that the reader is familiar with the TTEthernet protocol. The reader is advised to read the TTEthernet protocol standard [1] before reading this document. This document does not re-iterate the content of the standard

Investigating Actuation Force Fight with Asynchronous and Synchronous Redundancy Management Techniques

Within distributed fault-tolerant systems the term force-fight is colloquially used to describe the level of command disagreement present at redundant actuation interfaces. This report details an investigation of force-fight using three distributed system case-study architectures. Each case study architecture is abstracted and formally modeled using the Symbolic Analysis Laboratory (SAL) tool chain from the Stanford Research Institute (SRI). We use the formal SAL models to produce k-induction based proofs of a bounded actuation agreement property. We also present a mathematically derived bound of redundant actuation agreement for sine-wave stimulus. The report documents our experiences and lessons learned developing the formal models and the associated proofs

Educator Stress: Finding Solutions to Combat Negativity, Exhaustion, and Burnout

What are habits of mind necessary for effective teaching? high levels of uncertainty attention to others mental flexibility emotion regulation relationship management skills working with conflict creatively being resilient after conflicts practicing forgiveness and relationship reengagement after conflict

Stress in Education: Finding Solutions to Combat Negativity and Burnout

Working in education can be one of the most fulfilling jobs, but the current climate for many staff is filled with stress and frustration. With teachers feeling underappreciated and overworked, mental health issues are on the rise and the climate of many schools has had a negative turn. This session will discuss topics around compassion fatigue, negativity, not feeling connected, and overall discomfort to change

Impact of in-house specialty pharmacy on access to novel androgen axis inhibitors in men with advanced prostate cancer

Introduction: Novel androgen axis inhibitors are standard of care treatments in advanced prostate cancer. The billed amounts for these medications are often very high, which may create significant financial toxicity for patients and lead to delays in treatment. Our institution implemented an in-house specialty pharmacy in 2014, that provides these medications and evaluates copay assistance options for all patients. We evaluated the program’s impact on out of pocket cost (OOP) and turnaround time (TAT). Methods: We reviewed available internal specialty pharmacy records to identify prescriptions for abiraterone or enzalutamide filled between 1/1/17 and 12/31/18. Payments were stratified by primary payment (amount reimbursed by the patient’s prescription plan based on the benefit’s design) and copayment assistance. Turnaround times (TAT) in business days were stratified by prescriptions requiring intervention (prior authorization, copayment assistance, or insufficient inventory) and clean prescriptions (those requiring no intervention). Results: One thousand four hundred seventeen prescriptions for 175 unique patients requiring abiraterone (n=869, 61.3%) or enzalutamide (n=548, 38.7%) were filled through the institution’s specialty pharmacy. The average amount paid by primary payer was $9,492.96 for a 30 day supply (range:$3,382.48-$12,939.84). Average quoted copay was$577.53 (range $3.08-$10,560.39). 64% of patients received copayment assistance. Average OOP cost per prescription after co-pay assistance was $100.83 (range$0-$8556.64). Three patients declined treatment due to cost (1.7% of overall). Average TAT was 2.98 days for clean prescriptions and 3.36 days for prescriptions needing intervention (p=0.055). Discussion: OOP cost varied significantly based on plan design and copayment assistance eligibility. The majority of patients received copayment assistance, which markedly reduced OOP cost. Cost rarely precluded access to treatment. TAT was not significantly prolonged for prescriptions requiring intervention. Further studies to determine impact of pharmacy type on access to specialty medications are indicated