Miracle-dz/UniFAR-FTUs huggingface dataset:
PLC channel characterization up to 300 MHz: Frequency response and line impedance

We investigate the statistics of the in-home power line communications channel in the broadband frequency range up to 300 MHz. The analysis is based on the results of an experimental measurement campaign in Italy during which we acquired more than 1300 channels. Firstly, we focus on the channel frequency response. We study the statistics of the amplitude (in dB). In particular, we infer the normal distribution of the quantity. Furthermore, we examine the statistics of the phase. Then, we study the line impedance. We investigate the statistics of the resistive and reactive component of the line impedance and their relation. Finally, we perform the joint analysis of the line impedance components and the amplitude of the channel frequency response.
Comparison between Dutch and Norwegian parents regarding their perceptions on parental measures to prevent substance use among adolescents

This study investigated whether Dutch and Norwegian parents differ in their perceptions on parental measures and how parents view governmental responsibility to prevent adolescents from substance use. Data were derived from a cross-sectional internet survey conducted in the Netherlands and Norway. A subsample of Dutch (n = 2017) and Norwegian parents (n = 844) was selected. Parents were asked about their perceptions on different parental measures in relation to substance use, e.g. setting the right example, setting rules, parental behavior in the presence of adolescents, and how they view governmental responsibility compared with parental responsibility in relation to substance use among adolescents. The parental responsibility for taking parental measures against adolescents’ substance use was emphasized by both the Dutch and Norwegian parents. Compared to Dutch parents, Norwegian parents were slightly more positive about taking parental measures. Dutch frequent and heavy drinkers and Norwegian men were the most negative about parental perceptions on alcohol measures. Regarding perceptions on parental measures on drug use, Dutch and Norwegian lifetime cannabis users and current cannabis users supported parental measures to a lesser extent. Overall, the results suggest that both Dutch and Norwegian parents feel the responsibility to provide measures to prevent children from alcohol and drug use, irrespective of the alcohol and drug policy in their own country. Both the Dutch and Norwegian supported parental measures to prevent adolescents from substance use.
Re-creating a vision of motherhood: Therapeutic Drug Court and the narrative

The experience of mothering for women recovering from drug abuse in the criminal justice system is a serious issue. This article describes a study nested in a multi-method community participatory project to improve the services of the Therapeutic Drug Court (TDC) for citizens in our community. Interviews with felonious female offenders with minor children completing a TDC and mental health associates who work with them were analyzed using an interpretive phenomenological approach in the Heideggerian tradition. Findings revealed that mothers could reclaim a vision of parenting with or without their children, with help. This article shows how this reclamation occurs.
Towards combining the cognitive neuropsychological and the pragmatic in aphasia therapy

Abstract Given that the aim of aphasia therapy is to improve communication rather than performance on formal tests, cognitive neuropsychologically-based approaches need to provide evidence that successful outcomes generalise to communication in everyday life. One means of doing this is to address everyday communication directly by combining inferences made from a psycholinguistic assessment with analysis of natural conversation. This permits the individualised case-study approach used in cognitive neuropsychology to be applied in pragmatic intervention, since ethno-methodologically driven Conversational Analysis (CA) also uses a fine level of detail from individual language users. This can then be applied in indirect intervention achieved through caregivers. In the study reported here, the word-finding difficulties of two aphasic women were interpreted from a psycholinguistic perspective, and conversations between them and their caregivers at home analysed using CA. Inferences from both were combined in o.
The Effects of Exercise-induced Fatigue on Acetylcholinesterase Expression and Activity at Rat Neuromuscular Junctions

Acetylcholinesterase is the enzyme that terminates neurotransmission by hydrolyzing the acetylcholine released by the motoneurons at the neuromuscular junctions. Although acetylcholinesterase has been studied for almost a century, the underlying relationship between exercise-induced fatigue and acetylcholinesterase activity at the synaptic cleft is not clear. The purpose of this study was to assess the effects of exercise-induced fatigue on the expression and activity of acetylcholinesterase at the neuromuscular junctions. The expression and activity of acetylcholinesterase at the gastrocnemius neuromuscular junctions was decreased transiently by exercise-induced fatigue and then gradually increased over 24 hr. The expression of acetylcholinesterase in the 24 hr recovery group returned to the level of the control (non-exercised) group, but the activity of acetylcholinesterase remained significantly lower. These data suggest that the decrease of acetylcholinesterase expression and activity may be involved in the production and/or maintenance of exercise-induced fatigue.
Hemispheric Differences in Relational Reasoning: Novel Insights Based on an Old Technique

Relational reasoning, or the ability to integrate multiple mental relations to arrive at a logical conclusion, is a critical component of higher cognition. A bilateral brain network involving lateral prefrontal and parietal cortices has been consistently implicated in relational reasoning. Some data suggest a preferential role for the left hemisphere in this form of reasoning, whereas others suggest that the two hemispheres make important contributions. To test for a hemispheric asymmetry in relational reasoning, we made use of an old technique known as visual half-field stimulus presentation to manipulate whether stimuli were presented briefly to one hemisphere or the other. Across two experiments, 54 neurologically healthy young adults performed a visuospatial transitive inference task. Pairs of colored shapes were presented rapidly in either the left or right visual hemifield as participants maintained central fixation, thereby isolating initial encoding to the contralateral hemisphere. We observed a left-hemisphere advantage for encoding a series of ordered visuospatial relations, but both hemispheres contributed equally to task performance when the relations were presented out of order. To our knowledge, this is the first study to reveal hemispheric differences in relational encoding in the intact brain. We discuss these findings in the context of a rich literature on hemispheric asymmetries in cognition.
Assessing Subjective Age and Adjustment to Aging in a Portuguese and German Older Population: A Comparative Multiple Correspondence Analysis

Purpose: This study aims at examining the contributors to adjustment to aging (AtA) and subjective age (SA) identified by older adults and to investigate the latent constructs that can work as major determinants in AtA and SA in an older Portuguese and German population. Method: Measures were completed, using a variety of appropriate methods, including demographics and interviews. Complete data were available for 102 older adults aged between 74-100 years (M=81.2; SD = 6.70). Data was subjected to content analysis. Representation of the associations and latent constructs were analyzed by a Multiple Correspondence Analysis (MCA). Results: Findings showed a model for each nationality. SA and AtA for Portuguese elderly were explained by a three-factor overall model: “active”, “concentrated” and “attuned”. A three-dimension overall model formed by “harmonized”, “focused” and “young-at-heart” was indicated as a best-fit solution for German elderly. Conclusion: SAis differently related to AtA in older adults in both samples. The findings presented in this paper highlighted the under-developed potential of an adjustment and age overall model for this population.
Evaluating the contribution of changes in isoprene emissions to surface ozone trends over the eastern United States

[1] Reducing surface ozone (O3) to concentrations in compliance with the national air quality standard has proven to be challenging, despite tighter controls on O3 precursor emissions over the past few decades. New evidence indicates that isoprene emissions changed considerably from the mid-1980s to the mid-1990s owing to land-use changes in the eastern United States (Purves et al., 2004). Over this period, U.S. anthropogenic VOC (AVOC) emissions decreased substantially. Here we apply two chemical transport models (GEOS-CHEM and MOZART-2) to test the hypothesis, put forth by Purves et al. (2004), that the absence of decreasing O3 trends over much of the eastern United States may reflect a balance between increases in isoprene emissions and decreases in AVOC emissions. We find little evidence for this hypothesis; over most of the domain, mean July afternoon (1300–1700 local time) surface O3 is more responsive (ranging from −9 to +7 ppbv) to the reported changes in anthropogenic NOx emissions than to the concurrent isoprene (−2 to +2 ppbv) or AVOC (−2 to 0 ppbv) emission changes. The estimated magnitude of the O3 response to anthropogenic NOx emission changes, however, depends on the base isoprene emission inventory used in the model. The combined effect of the reported changes in eastern U.S. anthropogenic plus biogenic emissions is insufficient to explain observed changes in mean July afternoon surface O3 concentrations, suggesting a possible role for decadal changes in meteorology, hemispheric background O3, or subgrid-scale chemistry. We demonstrate that two major uncertainties, the base isoprene emission inventory and the fate of isoprene nitrates (which influence surface O3 in the model by −15 to +4 and +4 to +12 ppbv, respectively), preclude a well-constrained quantification of the present-day contribution of biogenic or anthropogenic emissions to surface O3 concentrations, particularly in the high-isoprene-emitting southeastern United States. Better constraints on isoprene emissions and chemistry are needed to quantitatively address the role of isoprene in eastern U.S. air quality.
Visual orienting with central and peripheral precues: Deconfounding the contributions of cue eccentricity, cue discrimination and spatial correspondence

Five experiments examined effects of spatial precues on visual attention. Precues consisted of letters (X, T, O) presented bilaterally at central and peripheral locations.In the spatial correspondence conditions targets tended (p= .8) to appear on the same side as one of the letters. In the spatial translation conditions the bilateral letters were identical; one letter (e.g., X) indicated that the target would probably (p= .8) appear on the left, and the other (e.g., T) indicated that the target would probably appear on the right. In the spatial correspondence conditions (Experiments 1, 3A, 4, and 5) response latencies were quicker on valid than invalid trials, even at very brief (0 ms, 33 ms, 66 ms, 100 ms) stimulus onset asynchronies (SOAs) between cue and target onset. Also,the dynamic pattern of cost and benefit resembled that seen in previous studies with unilateral peripheral precues. In the spatial translation conditions (Experiments 2 and 3B), a clear advantage for valid trials was only apparent at somewhat longer SOAs (150 ms, 300 ms, 500 ms). Results show that the need to discriminate between cue stimuli, and the visual eccentricity of cues, are not critical factors mediating attentional effects of spatial precues. However, the presence or absence of spatial correspondence between the location of a cue stimulus and the location of the target was critically important.
The Archaeology of Emotion and Affect

The literature on the archaeology of emotion and affect is mostly quite recent and is not extensive. This review considers the main lines of approach taken so far and explores how different understandings of what constitutes an emotion underlie the work of archaeologists in this area. A distinction is made between past emotion as a subject of study and examination of the emotional subjectivity of the archaeologist as a method. The potential contribution of archaeology to emotion studies in the future includes bringing a sense of contextual historicity to the discussion and developing our knowledge of how material things and places are involved in shaping and expressing emotion. Inspired by some historians of emotion, a focus on shared emotional meanings, values, and codes seems a more productive direction than the exploration of idiosyncratic personal emotional experience.
The Effect of Police on Crime: New Evidence from U.S. Cities, 1960-2010

We argue that the key impediment to accurate measurement of the effect of police on crime is not necessarily simultaneity bias, but bias due to mismeasurement of police. Using a new panel data set on crime in medium to large U.S. cities over 1960- 2010, we obtain measurement error corrected estimates of the police elasticity of the cost-weighted sum of crimes of roughly -0.5. The estimates confirm a controversial finding from the previous literature that police reduce violent crime more so than property crime.
Conjunctival Blue Naevus in an Anophthalmic Socket

Purpose of the Study: To describe an unusual brown pigmented lesion of the conjunctiva in an anophthalmic socket in a 16-year-old male. Procedures: A 16-year-old male patient presented with socket irritation whilst wearing an artificial eye due to meibomian gland dysfunction. An area of flat, subepithelial, dark brown pigmentation with irregular and indistinct borders on the bulbar conjunctiva of the anophthalmic socket was seen. The patient believed it had been present for at least 2 years. His past ocular history was of childhood trauma to the right eye at the age of 9 years, and he underwent primary enucleation and hydroxyapatite orbital implant insertion at that time. Unfortunately, the implant extruded and was removed a year later. Results: An incisional biopsy of the pigmented lesion showed a conjunctival, subepithelial bland spindle cell melanocytic lesion, with uniform-sized and -shaped melanosomes. Immunohistochemistry showed the cells to express Melan A and HMB45 and they were negative for CD68 and pan-cytokeratins. The features were of a common blue naevus. Conclusion: This is the first documentation of a post-enucleation conjunctival naevus in an anophthalmic socket. We propose a pathogenesis and suggest surveillance as there is a risk of transformation to melanoma.
A New Look at Split-Ticket Outcomes for House and President: The Comparative Midpoints Model

We argue that conservative districts that go Democratic for the House should be likely to choose a Republican for president, while liberal districts represented by a Republican should be likely to opt for a Democrat for president. We test these and related predictions about split-ticket voting with election data from the eight presidential elections between 1964 and 1992. We show that ideological differences in the estimated location of the district's median voter explains a substantial component of the systematic variation in patterns of split outcomes in this period across districts, but that other factors (e.g., an especially popular incumbent or a particularly poor challenger, the magnitude of presidential election victory, region-specific realignment effects) also play a role.
Pipe Replacement in a Water Supply Network: Coordinated Versus Uncoordinated Replacement and Budget Effects

Operators of underground water supply networks are challenged with pipe replacement decisions, because pipes are subject to increased failure rates as they age and financial resources are often limited.We study the optimal replacement time and optimal number of pipe replacements such that the expected failure cost and replacement cost are minimized, while satisfying a budget constraint and incorporating uncoordinated and coordinated replacement. Results show that coordinated replacement is economically preferred to uncoordinated replacement. It depends on the size of the budget whether the increase in the number of pipe replacements is sufficient to reduce the total expected failure cost.
An integrative model of organizational learning and social capital on effective knowledge transfer and perceived organizational performance

Purpose – The purpose of this paper is to set out to examine the relationships of organizational learning, social capital and the effectiveness of knowledge transfer and perceived organisational performance. Integrating organizational learning capability with social capital networks to shape a holistic knowledge sharing and management enterprise framework is a significant strategy to achieve organizational success.Design/methodology/approach – An integrative framework is used to determine the relationships of key variables of organizational learning such as learning intention, shared values, absorption capacity, integration capability, and social capital variables such as network structure, network stability and network relational quality on the effectiveness of knowledge transfer in organizations. In this research, senior management (Chief Executive Officer, Chief Financial Officer, Chief Operating Officer) from 650 firms were randomly sampled and surveyed from the register of the Industrial Technologica.
BARRIERS TO NATURE CONSERVATION IN GERMANY: A MODEL EXPLAINING OPPOSITION TO PROTECTED AREAS

Germany is particularly plagued in its nature conservation strategies by widespread and persistent opposition to the designation and management of protected areas through local resistance. This opposition is continuing, despite Germany's commitment to international and European mandates to enhance biodiversity within its borders. This paper seeks to explain why this opposition is so coherent and so protracted with reference to research into the attitudes of residents, landowners and managers on both sides of the debate. The research involved the use of grounded theory approaches, sensitive interactive interviewing, and the gradual application of social psychological theories of social identity and reactance. The evidence is strong that there are powerful emotional and cultural drivers that divide nature conservationists and local landusers and residents into two camps, maintained by stereotyping and group bonding. Based on these findings, practical and constructive ways are proposed to reconcile these differing perceptions.
A Novel User Authentication Scheme Based on QR-Code

User authentication is one of the fundamental procedures to ensure secure communications and share system resources over an insecure public network channel. Thus, a simple and efficient authentication mechanism is required for securing the network system in the real environment. In general, the password-based authentication mechanism provides the basic capability to prevent unauthorized access. Especially, the purpose of the one-time password is to make it more difficult to gain unauthorized access to restricted resources. Instead of using the password file as conventional authentication systems, many researchers have devoted to implement various one-time password schemes using smart cards, time-synchronized token or short message service in order to reduce the risk of tampering and maintenance cost. However, these schemes are impractical because of the far from ubiquitous hardware devices or the infrastructure requirements. To remedy these weaknesses, the attraction of the QR - code technique can be introduced into our one-time password authentication protocol. Not the same as before, the proposed scheme based on QR code not only eliminates the usage of the password verification table, but also is a cost effective solution since most internet users already have mobile phones. For this reason, instead of carrying around a separate hardware token for each security domain, the superiority of handiness benefit from the mobile phone makes our approach more practical and convenient.
A novel approach to extract colon lumen from CT images for virtual colonoscopy

An automatic method has been developed for segmentation of abdominal computed tomography (CT) images for virtual colonoscopy obtained after a bowel preparation of a low-residue diet with ingested contrast solutions to enhance the image intensities of residual colonic materials. Removal of the enhanced materials was performed electronically by a computer algorithm. The method is a multistage approach that employs a modified self-adaptive on-line, vector quantization technique for a low-level image classification and utilizes a region-growing strategy for a high-level feature extraction. The low-level classification labels each voxel based on statistical analysis of its three-dimensional intensity vectors consisting of nearby voxels. The high-level processing extracts the labeled stool, fluid and air voxels within the colon, and eliminates bone and lung voxels which have similar image intensities as the enhanced materials and air, but are physically separated from the colon. This method was evaluated by volunteer studies based on both objective and subjective criteria. The validation demonstrated that the method has a high reproducibility and repeatability and a small error due to partial volume effect. As a result of this electronic colon cleansing, routine physical bowel cleansing prior to virtual colonoscopy may not be necessary.
Evaluation of a Second-Generation Microtransesophageal Echocardiography Transducer and Software

Background: Transesophageal echocardiographic imaging of small infants has been limited because of equipment size. A newer miniaturized transducer has allowed for the imaging of even the smallest patients but has been limited by intermittent poor image quality because of hardware durability. A second generation of the transducer was developed to address this problem. The aim of this study was to evaluate the performance and durability of the second-generation transducer over multiple uses and to compare the image quality from the modified transducer and new software preset to the original transducer. Methods: Patients undergoing transesophageal echocardiography (TEE) based on clinical indications with the original or second-generation transducers were included in the study. All studies were reviewed for image quality and unacceptable image degradation, which was defined as imaging quality inadequate for clinical use. Study review was performed by two echocardiographers. Results: Using the original transducer, 37 studies were performed with a mean patient weight of 3.46 ± 0.89 kg (range 2.1-5.7). Using the second-generation transducer, 65 studies were performed with a mean patient weight of 4.87 ± 2.05 kg (range 2.2-13.8). Image quality was clinically inadequate in 8 of the 35 studies with the original transducer and in zero with the second generation (P < .0001). Conclusions: The second-generation transducer allows for effective use of TEE even in the smallest infants and avoids the mechanical failures associated with the first-generation release.