Miracle-dz/UniFAR-FTUs huggingface dataset:
Efficient spectrum utilization: Cognitive radio approach

This paper presents a brief overview of cognitive radio applications and discusses design challenges in implementing integrated circuits for spectrum sensing and wideband/reconfigurable transceivers. Our prototype chip of a cognitive radio receiver with multi-resolution, dynamic-range-scalable spectrum sensing capability over a wide frequency range of 30 MHz to 2.4 GHz is also described.
Let us fight and support one another: adolescent girls and young women on contributors and solutions to HIV risk in Zambia

In Zambia, adolescent girls and young women (AGYW) are disproportionately affected by human immunodeficiency virus (HIV), social, cultural and economic factors making them particularly vulnerable. This study was designed to understand the context in which AGYW are at risk and to identify perceived drivers of the epidemic and potential strategies to reduce HIV risk. Focus group discussions were conducted with AGYW in Zambian districts with the highest HIV prevalence from February through August 2016. The focus group guide addressed HIV risk factors and strategies for HIV prevention in AGYW. Focus group discussions were recorded, translated and transcribed, themes identified and responses coded. Results suggest that gender inequality undermined potentially protective factors against HIV among AGYW. Poverty and stigmatization were major barriers to accessing available HIV prevention services as well as primary risk factors for HIV infection. Sponsorship to support AGYW school attendance, programs for boys and girls to foster gender equality and financial assistance from the government of Zambia to support AGYW most in need were proposed as strategies to reduce HIV risk. Results highlight the utility of using community-based research to guide potential interventions for the affected population. Future research should explore the use of multilevel interventions to combat HIV among AGYW.
Effects of components of protection-motivation theory on adaptive and maladaptive coping with a health threat.

How do people cope with a threat when they do not plan to adopt an adaptive, protective response? We explored this question by examining the effects of information about a health threat and two aspects of coping ability, self-efficacy and response efficacy, on two adaptive and five maladaptive coping strategies (e.g., avoidance, wishful thinking). The results disclosed that the high-threat condition energized all forms of coping; it did not differentially cue specific coping strategies. The critical factor in determining the specific strategies used was the coping information. The high-response-efficacy and high-self-efficacy conditions strengthened adaptive coping and did not foster any maladaptive coping. A supplementary path analysis revealed an intriguing pattern of relations, including the finding that the most maladaptive strategy was avoidant thinking, which simultaneously reduced fear of the threat and weakened intentions to adopt the adaptive response.
Food Miles: Starving the Poor?

Food miles measure the distance food travels to reach consumers’ plates. Although substituting local food for imported produce will not necessarily reduce greenhouse gas (GHG) emissions, the food miles movement is widely supported by consumers and import-competing producers, especially in some parts of Western Europe. We investigate the economic implications of food miles preference changes in the UK, France and Germany on other nations using an economy-wide model. Among the regions we consider, New Zealand is the most distant from Western Europe and Madagascar and Malawi export the most agro-food products relative to GDP, so food miles movements have the largest impacts on these regions. When there is a linear relationship between distance and preference changes, food miles campaigns decrease welfare in New Zealand, Madagascar and Malawi by 0.30, 0.12 and 0.28 per cent, respectively. When there is a preference shift away from imported food unrelated to distance, proportional welfare losses in the three countries are, respectively, 0.11, 0.08 and 0.24 per cent. With the exception of New Zealand, these findings indicate that some of the world’s poorest nations will suffer the most from European food miles lobbying. We conclude that food miles campaigns will increase global inequality without necessarily improving environmental outcomes.
Morphology of Golgi‐Cox‐impregnated barrel neurons in rat SmI cortex

Golgi‐Cox‐impregnated neurons in the barrel cortex of the rat were studied qualitatively and quantitatively. Adult rat brains were sectioned perpendicular to or parallel to the cortical representation of the large facial vibrissae at 125 μm. Cortical laminar and barrel boundaries were identified from the Nissl counterstain. Over 200 well‐impregnated neurons in cortical layers I–IV were selected for classification and further detailed study. Three broad classes of neurons were recognized: (1) pyramidal cells with conical somata, a stout apical dendrite, and spines; (2) class I nonpyramidal cells having small spherical somata and spiny dendrites; and (3) class II nonpyramidal cells having larger ellipsoid somata and smooth or beaded dendrites. The class I cells were further subdivided into “star pyramids” (cells with an apical dendrite) and spiny stellate cells (cells in which all dendrites were of similar length). The class II cells also were subdivided into multiform cells (with multiple dendrites radiating from the soma) and bipolar cells (with two principal dendritic trunks arising from the superficial and deep aspects of the soma). The position of these various cell types in the superficial cortical laminae was mapped in sections normal to the pia. Numerous examples of the class I and class II neurons were drawn with respect to the barrels in layer IV and the extent of their processes noted. Finally, approximately 250 barrel‐related class I and II neurons were studied quantitatively using a computer‐microscope and digitizing tablet.
Research on Trace Tracking and Identification Technology Based on Magnetic Induction Intensity

In application fields of self-direction of vehicle, unmanned drive, trace robot and trace finder, tracking and identification of trace signal have key effects on tracking reliability and accuracy. Trace characterized with magnetic induction intensity is actually electromagnetic field signal produced around conductor when current flows inside conductor, and magnetic intensity has direct relationship with distance from conductor. Trace detecting device on vehicle can detect magnetic induction intensity and its change trend, and then degree and speed of deviation from trace can be calculated by linear regression algorithm, thus, trace tracking and identification can be achieved. Trace characterized with magnetic information can adapt to many complex working environments, and intensity control of trace signal and fault diagnosis can be easily realized
Real estate portfolio construction for a multi-asset portfolio

Purpose - – The purpose of this paper is to explore how tenant end demand dependence and investment market segmentation, as estimated through sector type, impacts real estate portfolio strategy in the context of the multi-asset portfolio. Design/methodology/approach - – The analysis is performed for six investor domeciles, for domestic and international investments over several cycles. The analysis is performed in a mean variance framework. Findings - – The findings are consistent with the hypothesis that an investor benefits from investing in real estate assets where end demand is dependent on local factors rather than global factors. Practical implications - – The efficiency of the overall multi-asset portfolio benefits from a deeper understanding of how the real estate portfolio is constructed. Locally dependent real estate, i.e. real estate that is dependent on local economic factors, tends to better support the overall portfolio than do real estate that is dependent upon global factors. Originality/value - – The paper contributes to the broader knowledge through extending earlier studies using similar methodology by extending the data series to cover the impact of the latest global financial crises, as well through extending the knowledge how the real estate portfolio should be constructed to better support the overall objectives of the multi-asset portfolio.
Entrepreneurship, Geography, and American Economic Growth

The spillovers in knowledge among largely college-educated workers were among the key reasons for the impressive degree of economic growth and spread of entrepreneurship in the United States during the 1990s. Prior 'industrial policies' in the 1970s and 1980s did not advance growth because these were based on outmoded large manufacturing models. Zoltan Acs and Catherine Armington use a knowledge spillover theory of entrepreneurship to explain new firm formation rates in regional economies during the 1990s period and beyond. The fastest-growing regions are those that have the highest rates of new firm formation, and which are not dominated by large businesses. The authors of this text also find support for the thesis that knowledge spillovers move across industries and are not confined within a single industry. As a result, they suggest, regional policies to encourage and sustain growth should focus on entrepreneurship among other factors.
Energy-informatic-centric smart campus

An energy-informatic-centric smart campus represents a viable structure addressing to different groups of users, like: students, teachers/educators, researchers and technical administrators, using information and communications technology system interface for accessing various services and requiring real time information regarding university buildings energy consumption and production, air quality and environmental conditions. This paper deals with the ongoing implementation of a smart campus infrastructure based on an informatic hierarchical system for monitoring and controlling energy consumption and production within a large number of buildings within the university campus. This system can minimize the overall campus exploitation costs using as much as possible the internal energy resources, like high efficiency combined heat and power units and photovoltaic installations, in strong correlation with the objective of high level educational and research activities.
Are the Implications of the Financial Growth Cycle Confirmed for Spanish SMEs

The aim of this paper is to analyze whether some of the empirical implications of the financial growth cycle hold in a sample of Spanish SMEs. We use a sample of 5,944 observations for the year 2007 and test several hypotheses using MANOVA analysis. The results show that companies tend to have different financing structures depending on their age and size. Hypotheses about trade credit, short term debt and risk are confirmed with respect to age, as the younger companies tend to use proportionally more trade credit and short term debt, and are riskier. Size is also associated in the expected way with trade credit, relative trade credit and relative short-term financial debt. On the other hand hypotheses about equity and the financing deficit are not confirmed. The effect of a pecking order behaviour over a long period of time may provide an explanation of why these two hypotheses are not confirmed.
Calcium and Magnesium Metabolism in Pre-Eclampsia.

BACKGROUND Preeclampsia is a multisystem disorder associated with high maternal and perinatal mortality and morbidity. The cause of the disorder is largely unknown and its pathogenesis is complex and poorly understood. Calcium and magnesium are divalent ions which may have roles to play in the manifestations of the disease. An understanding of their metabolism in preeclampsia may aid our management of pregnant women who develop the disease. OBJECTIVE To determine the plasma and urinary concentrations of calcium, magnesium and parathyroid hormone in women with mild, severe preeclampsia and in normal pregnancy. METHODS This is was a case control study of fifty women with mild preeclampsia, fifty women with severe preeclampsia and fifty women with normal pregnancy as controls, drawn from The Antenatal Clinic at the Lagos University Teaching Hospital, Lagos, Nigeria. The women were consecutively recruited after signing an informed consent form. Ethical approval was obtained from the medical ethics committee of the hospital. RESULTS The three groups of women were similar in their socio demographic characteristics. Plasma calcium was low in mild and severe preeclampsia compared to normal pregnancy controls (p=0.021). Urine calcium/creatinine ratio was lower in mild and severe preeclampsia compared to normal pregnancy controls (p= 0.030). Fractional excretion of calcium and levels of parathyroid hormone were similar across all three subgroups of women. Plasma magnesium was higher in mild and severe preeclampsia compared to normal pregnancy controls (p=0.011) and showed a positive correlation with plasma creatinine (r=0.48, p=0.045). Parathyroid hormone levels were similar across the study groups. CONCLUSION Preeclampsia is associated with significant changes in calcium and magnesium metabolism. This study noted significant hypocalcaemia in mild and severe preeclampsia with significantly low urine calcium/creatinine levels. Calcium supplementation may have a place in patient's management. Hypermagnesemia was observed in mild and severe preeclampsia and appeared related to renal function.
A prognostic system for transient ischemia or minor stroke.

OBJECTIVE To build a prognostic system for patients with carotid transient ischemic attack or minor stroke. DESIGN Inception cohort study with 2-year follow-up. SETTING Urban community teaching hospital. PATIENTS Eligible patients (n = 142), identified on a carotid ultrasound roster, had been hospitalized between 1984 and 1987 within 30 days of a first carotid transient ischemic attack or minor stroke. MEASUREMENTS Stroke or death within 2 years. MAIN RESULTS Three factors were associated with stroke or death: age of more than 65 years, diabetes, and hypertension. Based on regression coefficients, age of more than 65 years was assigned 3 points; diabetes, 3 points; and hypertension, 2 points. An initial prognostic system comprised risk groups 1 (0 points), 2 (1 to 5 points), and 3 (6 to 8 points). Outcome rates in the three groups were 2%, 31%, and 54% (P less than 0.0001), respectively. In an independent test sample, the corresponding outcome rates for the initial system were 12%, 21%, and 31% (P = 0.04). A final prognostic system, including two additional predictors (coronary heart disease [1 point] and the distinction between stroke and transient ischemic attack for the baseline event [2 points]), comprised risk groups 1 (0 to 2 points), 2 (3 to 6 points), and 3 (7 to 11 points). Corresponding outcome rates were 3%, 27%, and 48% (P less than 0.001) in the original cohort and 10%, 21%, and 59% (P less than 0.001) in the test cohort. CONCLUSION For selected patients with carotid transient ischemia or minor stroke, five clinical features can be combined to stratify effectively the risk for a subsequent stroke or death.
Isolation of a gene involved in 1,3-beta-glucan synthesis in Aspergillus nidulans and purification of the corresponding protein

Saccharomyces cerevisiae has two highly homologous genes, FKS1 and FKS2, which encode interchangeable putative catalytic subunits of 1,3-beta-glucan synthase (GS), an enzyme that synthesizes an essential polymer of the fungal cell wall. To determine if GS in Aspergillus species is similar, an FKS homolog, fksA, was cloned from Aspergillus nidulans by cross-hybridization, and the corresponding protein was purified. Sequence analysis revealed a 5,716-nucleotide coding region interrupted by two 56-bp introns. The fksA gene encodes a predicted peptide of 229 kDa, FksAp, that shows a remarkable degree of conservation in size, charge, amino acid identity, and predicted membrane topology with the S. cerevisiae FKS proteins (Fksps). FksAp exhibits 64 and 65% identity to Fks1p and Fks2p, respectively, and 79% similarity. Hydropathy analysis of FksAp suggests an integral membrane protein with 16 transmembrane helices that coincide with the transmembrane helices of the Saccharomyces Fksps. The sizes of the nontransmembrane domains are strikingly similar to those of Fks1p. The region of FksAp most homologous to the Saccharomyces FKS polypeptides is a large hydrophilic domain of 578 amino acids that is predicted to be cytoplasmic. This domain is 86% identical to the corresponding region of Fks1p and is a good candidate for the location of the catalytic site. Antibodies raised against a peptide derived from the FksAp sequence recognize a protein of approximately 200 kDa in crude membranes and detergent-solubilized active extracts. This protein is enriched approximately 300-fold in GS purified by product entrapment. Purified anti-FksAp immunoglobulin G immunodepletes nearly all of the GS activity in crude or purified extracts when Staphylococcus aureus cells are used to precipitate the antibodies, although it does not inhibit enzymatic activity when added to extracts. The purified GS is inhibited by echinocandins with a sensitivity equal to that displayed by whole cells. Thus, the product of fksA is important for the activity of highly purified preparations of GS, either as the catalytic subunit itself or as an associated copurifying subunit that mediates susceptibility of enzymatic activity to echinocandin inhibition.
Thermoelectric and Transport Properties of Delafossite CuCrO2:Mg Thin Films Prepared by RF Magnetron Sputtering

P-type Mg doped CuCrO2 thin films have been deposited on fused silica substrates by Radio-Frequency (RF) magnetron sputtering. The as-deposited CuCrO2:Mg thin films have been annealed at different temperatures (from 450 to 650 °C) under primary vacuum to obtain the delafossite phase. The annealed samples exhibit 3R delafossite structure. Electrical conductivity σ and Seebeck coefficient S of all annealed films have been measured from 40 to 220 °C. The optimized properties have been obtained for CuCrO2:Mg thin film annealed at 550 °C. At a measurement temperature of 40 °C, this sample exhibited the highest electrical conductivity of 0.60 S·cm−1 with a Seebeck coefficient of +329 µV·K−1. The calculated power factor (PF = σS²) was 6 µW·m−1·K−2 at 40 °C and due to the constant Seebeck coefficient and the increasing electrical conductivity with measurement temperature, it reached 38 µW·m−1·K−2 at 220 °C. Moreover, according to measurement of the Seebeck coefficient and electrical conductivity in temperature, we confirmed that CuCrO2:Mg exhibits hopping conduction and degenerates semiconductor behavior. Carrier concentration, Fermi level, and hole effective mass have been discussed.
The Use of Numeraires in Multi-Dimensional Black-Scholes Partial Differential Equations

The change of numeraire gives very important computational simplification in option pricing. This technique reduces the number of sources of risks that need to be accounted for and so it is useful in pricing complicated derivatives that have several sources of risks. In this article, we considered the underlying mathematical theory of numeraire technique in the viewpoint of PED theory and illustrated it with five concrete pricing problems. In the viewpoint of PED theory, the numeraire technique is a method of reducing the dimension of status spaces where PDE is defined.
Difluorothromboxane A2 and stereoisomers: stable derivatives of thromboxane A2 with differential effects on platelets and blood vessels.

The present study reports on the selective effects on human platelets and canine saphenous veins of four stable difluorinated analogues and thromboxane A2 (TXA2), in which the characteristic 2,6-dioxa[3.1. 1]bicycloheptane structure of TXA2 has been retained. The four compounds differ in their stereochemistry of the 5,6 double bond and/or the 15-hydroxyl group. Only 10,10-difluoro-TXA2 (compound I) with the natural stereochemistry of TXA2 was an agonist in both platelets and canine saphenous veins (EC50 = 36 +/- 3.6 nM and 3.7 +/- 0.8 nM, respectively). (15R)-10,10-Difluoro-TXA2 (compound II), (5E)-10,10-difluoro-TXA2 (compound III), and (5E,15R)-10,10-difluoro-TXA2 (compound IV) were antagonists of platelet aggregation stimulated by compound I (Kd = 98 +/- 46 nM, 140 +/- 42 nM, and 1450 +/- 350 nM, respectively). However, compounds II, III, and IV stimulated contraction of canine saphenous veins (EC50 = 36 +/- 4.4 nM, 31 +/- 6.8 nM, and 321 +/- 50 nM, respectively). All four compounds could displace the TXA2/prostaglandin H2 antagonist 9,11-dimethylmethano-11,12-methano-16-(3- 125I-4-hydroxyphenyl)-13,14-dihydro-13-aza-15 alpha beta-omega-tetranor-TXA2 from its platelet receptor (Kd values = 100 +/- 30 nM, compound I; 280 +/- 60 nM, compound II; 230 +/- 70 nM, compound III; and 1410 +/- 1020 nM, compound IV). These results support the existence of two subtypes of TXA2/prostaglandin H2 receptors and emphasize the importance of the stereochemical requirements of these TXA2 analogues for interaction with these receptors. These stable fluorinated TXA2 analogues should prove useful tools for the further characterization of these and other TXA2/prostaglandin H2 receptors.
Bayesian Approaches for Portfolio Construction: A Review

Determining the optimal mix of assets in the context of a portfolio construction involves “smart” forecasts of asset returns as well as good estimates of the asset return variances and covariances. Typically, sample moments are used as best estimates of the population moments. Several researchers have pointed out, however, that this generally acceptable practice introduces uncertainty, which can degrade the desirable properties of the constructed portfolio. In this chapter we discuss several approaches that use Bayesian principles to address uncertainty in the context of portfolio construction. The literature we review covers a period of about 30 years.We start with a detailed overview of the problem. We then present remedies that have been proposed to address various aspects of uncertainty in the empirical finance literature.
The 2000 Presidential Election in Historical Perspective

The year 2000 presidential election was a unique historical event. With a very close popular vote, the outcome depended on Florida, where, whichever way the votes were counted, the outcome was the closest state election in memory, closer than if Florida voters were deciding by flipping fair coins. ' Although Al Gore won the national popular vote, George W. Bush eventually won the contested Electoral College verdict with help from the U.S. Supreme Court. Continuing the Political Science Quarterly tradition of following each presidential election with an early analysis in the spring issue after the election,2 this article attempts to put the 2000 election in perspective-to understand the electorate's 2000 verdict within the context of what we know about elections past. Fortunately, several resources are available to help with this task. For a start, there are the Voter News Service (VNS) exit polls of voters as they left their polling places on election day. Both national and state exit polls, with their breakdowns of the vote by attitudes and social characteristics, became available to all on the web immediately after the election. Another data source available from the web is the trial-heat poll results reported throughout the cam-