Z2×Z2 \mathbb{Z}_2 \times \mathbb{Z}_2 generalizations of N=1{\cal N} = 1 superconformal Galilei algebras and their representations

We introduce two classes of novel color superalgebras of $\mathbb{Z}_2 \times \mathbb{Z}_2$ grading. This is done by realizing members of each in the universal enveloping algebra of the ${\cal N}=1$ supersymmetric extension of the conformal Galilei algebra. This allows us to upgrade any representation of the super conformal Galilei algebras to a representation of the $\mathbb{Z}_2 \times \mathbb{Z}_2$ graded algebra. As an example, boson-fermion Fock space representation of one class is given. We also provide a vector field realization of members of the other class by using a generalization of the Grassmann calculus to $\mathbb{Z}_2 \times \mathbb{Z}_2$ graded setting.Comment: 17 pages, no figur

A Rare Case of Reversible Encephalopathy Syndrome Accompanying Late Postpartum Eclampsia or Hypertensive Encephalopathy-A Clinical Dilemma

Posterior Reversible Encephalopathy Syndrome (PRES) refers to a clinic-radiologic diagnosis. Clinically it is characterized by non specific symptoms such as headache, confusion, visual disturbances and seizures. The radiological findings in PRES are thought to be due to vasogenic oedema, predominantly in the posterior cerebral hemispheres, and are reversible with appropriate management. We report a case of reversible encephalopathy diagnosed by MRI scan occurring in atypical areas like the caudate and lentiform nuclei of the brain following an uneventful lower segment caesarean section in a normotensive patient, who was successfully treated with antihypertensives, anticonvulsants and supportive treatment. The differential diagnosis of convulsions in the post-partum period is discussed

Hassles and Panacea to Educational Researches in South- South Nigeria

This study examined the problems affecting educational researches in South-South Nigeria. The research work was conducted at the University of Port Harcourt, Rivers state (UNIPORT); Niger Delta University, Amasoma, Bayelsa state (NDU); and the University of Calabar, Cross Rivers state (UNICAL). Descriptive survey research design was used for the study. The population for the study was 3000 which comprised of final year students and academic staff in the above mentioned institutions. A sample size of 600 was drawn from the population. Four research questions guided the study. A 30- item questionnaire was developed and administered. The study revealed governmental factors, tertiary institutional factors, and researchers’ factors affecting educational researches in South-South Nigeria. Recommendations were made such as: the various state governments should improve on the security condition in their respective regions; the managements of the South- South tertiary institutions should encourage lecturers to carry out researches by making funds available to them through Tertiary Education Trust (TET) fund; e-libraries should be introduced, etc

Obstacles and Way Forward in Promoting Renewable Energy in Nigeria

Nigeria is one of the world's leading producers of crude oil and yet it is a net importer of refined oil. Its average daily premium motor spirit (PMS) consumption is 30 million liters. At 100% capacity the nation's refineries will produce 17.74 million liters of premium motor spirit daily. A shortfall of over 10 million liters per day exists. Recent estimates stipulate that Nigeria requires 20,000 MW of electricity per annum. The projected electricity supply from all sources (conventional and renewable) in Nigeria in the short (2007), medium (2015) and long term (2025) is estimated to be 7000 MW, 14000 MW and 29,000 MW respectively. Annual peak electricity demand in Nigeria will increase from 4,558 MW to 45,755 MW in 2050 at high growth rate and 4,558 to 19,599 MW for low growth. Nigeria's electricity per capita of 27 W/person is not enough to light an electric incandescent bulb of 30 W. These provide enough justification for the use of renewable energy in Nigeria. The use of renewable energy in Nigeria is hindered by the lack of regulation, financial incentives, energy infrastructures, framework for sustainability and technical expertise. Overcoming these obstacles will require invigorating research and development in renewable energy technologies, training and education to build local technical capacity, diversification of energy mix and scaling up of renewable energy utilization, aggressive capacity building in all areas of energy development and creation of enabling environment that will attract investment in energy infrastructure. This paper discusses the obstacles and way forward in promoting renewable energy in Nigeria

Postcard: Asbestos Century Shingles Applied French Method

This black and white photographic postcard features the First Christian Church in Winfield, Kansas. The roof is completed with asbestos shingles. The front of the church contains four columns. Trees and a street lies to the left of the building. Printed text is at the bottom and on the back of the card. Typed text is on the back of the card.https://scholars.fhsu.edu/tj_postcards/1973/thumbnail.jp

Modeling the dynamics of a tracer particle in an elastic active gel

The internal dynamics of active gels, both in artificial (in-vitro) model systems and inside the cytoskeleton of living cells, has been extensively studied by experiments of recent years. These dynamics are probed using tracer particles embedded in the network of biopolymers together with molecular motors, and distinct non-thermal behavior is observed. We present a theoretical model of the dynamics of a trapped active particle, which allows us to quantify the deviations from equilibrium behavior, using both analytic and numerical calculations. We map the different regimes of dynamics in this system, and highlight the different manifestations of activity: breakdown of the virial theorem and equipartition, different elasticity-dependent "effective temperatures" and distinct non-Gaussian distributions. Our results shed light on puzzling observations in active gel experiments, and provide physical interpretation of existing observations, as well as predictions for future studies.Comment: 11 pages, 6 figure

Intraseasonal Management Strategies for Deficit Irrigation

Reduced availability of irrigation water to producers has led to the need for intraseasonal management strategies that efficiently use the limited supply of irrigation water. Historical weather data was used to develop a range of conditions experienced at the location. Sound weather data improves the dependability of management strategies. Data from weather stations on the Automated Weather Data Network and the Colorado AgMet network were evaluated based upon net radiation and dew point temperature observations expected in an irrigated agricultural setting. This weather data was used to create a relationship between the Penman-Montieth evapotranspiration (ET) and Hargreaves ET and the geographical location of the weather stations. The AquaCrop model was calibrated to data from the Carbon Sequestration Project at Mead, Nebraska. The model was able to accurately predict canopy cover (R2 = 0.96), biomass production (R2 = 0.98), and yields (R2 = 0.84, RMSE = 0.72 Mg ha-1). The model was also able to track ET throughout the growing season. The weather data and calibrated model were used to simulate the impact of irrigation timing throughout the growing season and to determine the timing of irrigation events that produced the highest marginal yields for different system capacities and initial soil water contents. Using the optimized irrigation distribution, a management strategy was developed to deficit irrigate corn based upon days after planting, initial soil water content, well-waterd ET, and a yield goal. The model predicted yields within 10% of the yield goal for the majority of simulations. It translated geographically and expressed the ability to account for differences in system capacity. Advisers: Raymond J. Supalla and Derrel L. Marti