State-of-the-art of data collection, analytics, and future needs of transmission utilities worldwide to account for the continuous growth of sensing data

Nowadays, transmission system operators require higher degree of observability in real-time to gain situational awareness and improve the decision-making process to guarantee a safe and reliable operation. Digitalization of energy systems allows utilities to monitor the system dynamic performance in real-time at fast time scales. The use of such technologies has unlocked new opportunities to introduce new data driven algorithms for improving the stability assessment and control of the system. Motivated by these challenges, a group of experts have worked together to highlight and establish a baseline set of these common concerns, which can be used as motivation to propose innovative analytics and data-driven solutions. In this document, the results of a survey on 10 transmission system operators around the world are presented and it aims to understand the current practices of the participating companies, in terms of data acquisition, handling, storage, modelling and analytics. The overall objective of this document is to capture the actual needs from the interviewed utilities, thereby laying the groundwork for setting valid assumptions for the development of advanced algorithms in this field

Novel performance evaluation of information and communication technologies to enable wide area monitoring systems for enhanced transmission network operation

This thesis was submitted for the award of Doctor of Philosophy and was awarded by Brunel University London.The penetration of renewable energy sources has increased significantly in recent years due to the ongoing depletion of conventional resources and the transition to a low carbon energy system. Renewable energy sources such as wind energy are highly intermittent and unpredictable in nature, which makes the operation of the power grid more dynamic and therefore more complex. In order to operate the power system reliably under such conditions, Phasor Measurement Units (PMUs) through the use of satellite technology can offer a state-of-the-art Wide Area Monitoring System (WAMS) for improving power system monitoring, control and protection. They can improve the operation by providing highly precise and synchronised measurements near to real-time with higher frequency and accuracy. In order to achieve such objectives, a high-speed and reliable communications infrastructure is required to transfer time-critical PMU data from remote locations to the control centre. The signals measured by PMUs are transmitted across Local and Wide Area Networks, where they may encounter excessive delays. Signal delays can have a disruptive effect and make applications at best inefficient and at worse ineffective. The main research contribution of this thesis is the performance evaluation of communication infrastructures for WAMS. The evaluation begins from inside substations and continues over wide areas from substations to control centre. Through laboratory-based investigations and simulations, the performance of communications infrastructure in a typical power system substation has been analysed. In addition, the performance evaluation of WAMS communications infrastructure has been presented. In the modelling and analysis, an existing WAMS as installed on the GB transmission system has been considered. The actual PMU packets as received at the Phasor Data Concentrator (PDC) were captured for latency analysis. A novel algorithmic procedure has been developed and implemented to automate the large-scale latency calculations. Furthermore, the internal delays of PMUs have been investigated, determined and analysed. Subsequently, the WAMS has been simulated and detailed comparisons have been performed between the simulated model results and WAMS performance data captured from the actual WAMS. The validated WAMS model has been used for analysing possible future developments as well as to test newly proposed mechanisms, protocols, etc. in order to improve the communications infrastructure performance

Department of Veterinary and Biomedical Sciences 2007 Annual Report

The first class of twenty· five Nebraska students began their DVM degree program at the University of Nebraska-Lincoln. The new program provides for students from Nebraska to complete their first two years of the professional school at UNL. The second two years of training will be completed at the College of Veterinary Medicine, Iowa State University. Under the agreement, the students will pay Iowa State resident tuition rates all four years. To prepare for the new program, an anatomy teaching laboratory, classroom and microbiology laboratory were develop by renovating space in the Animal Science Complex. New faculty members hired to teach the courses that make up the first two years of the professional curriculum include Dr. Jennifer Wood and Dr. Tom Burkey, veterinary physiology; Dr. John Kammermann, veterinary anatomy; Dr. Jay Reddy, veterinary immunology; Dr. Gary Pickard, neurobiology; Dr. Doug Hostetler, veterinary surgery. Faculty searches are underway for a veterinary parasitologist, veterinary pathologist and veterinary epidemiologist. In addition to these positions, Dr. Jeff Ondrak join the faculty at GPVEC as a Beef Cattle Clinical Veterinarian. The Department completed its CSREES and UNL S·year review during the year and the feedback from the review team was very favorable. The department is encourage to maintain its research focus in the area of infectious diseases and biomedical research and commented on the positive addition of the 2 + 2 Program and how it complemented the program. The Veterinary Diagnostic Center prepared for its five year AA VLD accreditation visit. The report was prepared and the site visit is schedule for early January 2008. We are concerned regarding the crowded conditions within the laboratories. In addition, this will be the first time the accreditation process will focus on Standard Operating Procedures within the laboratory. The undergraduate program has had steady growth since a low point in 2003. Much of this growth is credited to the creation of the Professional Program in Veterinary Medicine. The graduate program remains solid, as does the extramural research funding. To strengthen our extension program, Dr. Richard Randle was hired to focus on beef cattle extension activities. Additional activities include discussion with the Department of Animal Science and the Dean\u27s Office to strengthen collaborative efforts in student recruitment and clarify some of the confusion related to Pre-vet students

The effect of bright light on sleep in nursing home patients with dementia

Background: Up to 70% of nursing home patients with dementia suffer from disrupted sleep, often characterized by multiple awakenings at night and excessive daytime sleep. Sleep disruption may have negative effects on the cognition, mood, behaviour, and well-being of nursing home patients, while also representing a challenge for nursing home staff. However, few sleep scales are developed and validated specifically for the nursing home setting. Sleep problems among nursing home patients are frequently treated by medications, which are associated with severe side effects, including daytime sleepiness, and an increased risk of falls. Thus, there is a need for non-pharmacological interventions to improve sleep in this population. Bright light treatment (BLT) may represent such an intervention, providing increased light exposure aiming to impact sleep, circadian rhythmicity, mood, and/or behaviour. Light is the most important zeitgeber to the circadian system, and consequently has a significant impact on sleep-wake behaviour. Unfortunately, studies have reported low indoor light levels in nursing homes, which in combination with dementia-related neuropathology and age-related reductions in light sensitivity, are likely to contribute to sleep problems in this population. The aim of this thesis was to investigate whether increasing daytime light exposure, by means of BLT, can improve sleep in nursing home patients with dementia, and also to address methodological challenges in this field of research. Methods: Paper 1 is a systematic review of the literature, focusing on the methodological features of the included studies, in addition to their findings. Paper 2 and 3 are based on data from the DEM.LIGHT trial; a cluster-randomized placebo-controlled trial conducted in Norwegian nursing homes, including 69 patients. The intervention comprised a diurnal cycle of ambient light with a maximum of 1,000 lux and 6,000 Kelvin (K) from 10:00-15:00, administered using light emitting diode (LED) light. Before and after this interval, the light levels gradually increased/decreased in lux and K. In the placebo condition, standard light levels were maintained at 150-300 lux and approximately 3,000 K throughout the day. The intervention and placebo lights were installed in the common rooms of the included nursing home units. Outcomes were measured at baseline and at follow-up at week 8, 16, and 24. Paper 2 was a validation study of a proxy-rated sleep scale, using the baseline data from the DEM. LIGHT trial. Actigraphy was used as the reference standard. Paper 3 reported on the sleep outcomes of the trial, which were the primary outcomes. Results: Paper 1 found that there are promising, though inconsistent, results regarding the effect of BLT on sleep and circadian rhythmicity in dementia. Large heterogeneity in terms of interventions, study designs, population characteristics, and outcome measurement tools may explain some of the inconsistencies of results across studies. Paper 2 showed that the proxy-rated Sleep Disorder Inventory (SDI) had satisfactory internal consistency and convergent validity. Using actigraphy as the reference standard, the SDI was termed clinically useful, and we suggested a cut-off score of five or more as defining disrupted sleep in nursing home patients with dementia. These results should be interpreted keeping in mind that actigraphy have some important weaknesses, such as underestimating wake time. Paper 3 evaluated the effects of the BLT on sleep and found an improvement in sleep according to the SDI scores in the intervention group, as compared to the control group, from baseline to week 16 and baseline to week 24. There was no effect in terms of sleep measured by actigraphy. Conclusion: In summary, this thesis found that the evidence for an effect of BLT on sleep in nursing home patients with dementia is promising, but equivocal. Importantly, the research field faces some important methodological challenges, such as accurately measuring sleep. The SDI may represent a valid tool to measure sleep in the nursing home setting, which may be used both by researchers and by practitioners. Although the results of this thesis are not conclusive regarding the effect of BLT on sleep in nursing home patients with dementia, it may represent a step forward in understanding the potential value of BLT in this population, and may lay the ground for further investigation. The lack of an improvement on the SDI at week 8 indicates that the effect of BLT may take a long time to manifest in this population.Doktorgradsavhandlin

Religion in Global Health and Development

The COVID-19 pandemic has made evident that the field of global health – its practices, norms, and failures – has the power to shape the lives of billions. Global health perspectives on the role of religion, however, are strikingly limited. Uncovering the points where religion and global health have connected across the twentieth century, focusing on Ghana, provides an opportunity to challenge narrow approaches. In Religion in Global Health and Development Benjamin Walker shows that the religious features of colonial state architecture were still operating by the turn of the twenty-first century. Walker surveys the establishment of colonial development projects in the twentieth century, with a focus on the period between 1940 and 1990. Crossing the colonial-postcolonial divide, analyzing local contexts in conjunction with the many layers of international organizations, and identifying surprisingly neglected streams of personnel and funding (particularly from Dutch and West German Catholics), this in-depth history offers new ways of conceptualizing global health. Patchworks of international humanitarian intervention, fragmented government services, local communities, and the actions of many foreign powers combined to create health services and the state in Ghana. Religion in Global Health and Development shows that religion and religious actors were critical to this process – socially, culturally, and politically

Religion in Global Health and Development

The COVID-19 pandemic has made evident that the field of global health – its practices, norms, and failures – has the power to shape the lives of billions. Global health perspectives on the role of religion, however, are strikingly limited. Uncovering the points where religion and global health have connected across the twentieth century, focusing on Ghana, provides an opportunity to challenge narrow approaches. In Religion in Global Health and Development Benjamin Walker shows that the religious features of colonial state architecture were still operating by the turn of the twenty-first century. Walker surveys the establishment of colonial development projects in the twentieth century, with a focus on the period between 1940 and 1990. Crossing the colonial-postcolonial divide, analyzing local contexts in conjunction with the many layers of international organizations, and identifying surprisingly neglected streams of personnel and funding (particularly from Dutch and West German Catholics), this in-depth history offers new ways of conceptualizing global health. Patchworks of international humanitarian intervention, fragmented government services, local communities, and the actions of many foreign powers combined to create health services and the state in Ghana. Religion in Global Health and Development shows that religion and religious actors were critical to this process – socially, culturally, and politically

Annual Reports of the Department of the Interior for the fiscal year ended June 30, 1897; Annual Report of the Commissioner of Education, 1897.

Annual Report of the Sec. of Interior. 16 Nov. HD 5, 55-2, v12-22, 8978p. [3640-3650] Indian affairs; annual report of the Gen. Land Office (Serial 3640); annual report of the CIA (Serial 3641); etc