Miracle-dz/UniFAR-FTUs huggingface dataset:
Algorithms for the Connectivity Constrained Unmanned Ground Vehicle Surveillance Problem

The Connectivity Constrained UGV Surveillance Problem (CUSP) considered in this paper is the following. Given a set of surveillance UGVs and an area with obstacles that is to be covered, find waypoint-paths such that; 1) the area is completely surveyed, 2) the time for performing the search is minimized and 3) the induced information graph is kept recurrently connected. It has previously been shown that the CUSP is NP-hard. This paper presents four different heuristic algorithms for solving the CUSP, namely, the Token Station Algorithm, the Stacking Algorithm, the Visibility Graph Algorithm and the Connectivity Primitive Algorithm. These algorithms are then compared by means of Monte Carlo simulations. The conclusions drawn are that the Token Station Algorithm provides the best solutions in terms of objective value function, the Stacking Algorithm has the lowest computational complexity, while the Connectivity Primitive Algorithm provides a good trade-off between optimality and computational complexity for larger problem instances.
Bottom-up Assembly of the Phytochrome Network

Plants have developed sophisticated systems to monitor and rapidly acclimate to environmental fluctuations. Light is an essential source of environmental information throughout the plant’s life cycle. The model plant Arabidopsis thaliana possesses five phytochromes (phyA-phyE) with important roles in germination, seedling establishment, shade avoidance, and flowering. However, our understanding of the phytochrome signaling network is incomplete, and little is known about the individual roles of phytochromes and how they function cooperatively to mediate light responses. Here, we used a bottom-up approach to study the phytochrome network. We added each of the five phytochromes to a phytochrome-less background to study their individual roles and then added the phytochromes by pairs to study their interactions. By analyzing the 16 resulting genotypes, we revealed unique roles for each phytochrome and identified novel phytochrome interactions that regulate germination and the onset of flowering. Furthermore, we found that ambient temperature has both phytochrome-dependent and -independent effects, suggesting that multiple pathways integrate temperature and light signaling. Surprisingly, none of the phytochromes alone conferred a photoperiodic response. Although phyE and phyB were the strongest repressors of flowering, both phyB and phyC were needed to confer a flowering response to photoperiod. Thus, a specific combination of phytochromes is required to detect changes in photoperiod, whereas single phytochromes are sufficient to respond to light quality, indicating how phytochromes signal different light cues.
An improved long short-term memory neural network for stock forecast

This paper presents an improved long short-term memory (LSTM) neural network based on particle swarm optimization (PSO), which is applied to predict the closing price of the stock. PSO is introduced to optimize the weights of the LSTM neural network, which reduces the prediction error. After preprocessing the historical data of the stock, including opening price, closing price, highest price, lowest price, and daily volume these five attributes, we train the LSTM by employing time series of the historical data. Finally, we apply the proposed LSTM to predict the closing price of the stock in the last two years. Compared with typical algorithms by simulation, we find the LSTM has better performance in reliability and adaptability, and the improved PSO-LSTM algorithm has better accuracy.
Comparison of transplantation of bone marrow stromal cells (BMSC) and stem cell mobilization by granulocyte colony stimulating factor after traumatic brain injury in rat.

BACKGROUND Recent clinical studies of treating traumatic brain injury (TBI) with autologous adult stem cells led us to compare effect of intravenous injection of bone marrow mesenchymal stem cells (BMSC) and bone marrow hematopoietic stem cell mobilization, induced by granulocyte colony stimulating factor (G-CSF), in rats with a cortical compact device. METHODS Forty adult male Wistar rats were injured with controlled cortical impact device and divided randomly into four groups. The treatment groups were injected with 2 × 106 intravenous bone marrow stromal stem cell (n = 10) and also with subcutaneous G-CSF (n = 10) and sham-operation group (n = 10) received PBS and "bromodeoxyuridine (Brdu)" alone, i.p. All injections were performed 1 day after injury into the tail veins of rats. All cells were labeled with Brdu before injection into the tail veins of rats. Functional neurological evaluation of animals was performed before and after injury using modified neurological severity scores (mNSS). Animals were sacrificed 42 days after TBI and brain sections were stained by Brdu immunohistochemistry. RESULTS Statistically, significant improvement in functional outcome was observed in treatment groups compared with control group (P<0.01). mNSS showed no significant difference between the BMSC and G-CSF-treated groups during the study period (end of the trial). Histological analyses showed that Brdu-labeled (MSC) were present in the lesion boundary zone at 42nd day in all injected animals. CONCLUSION In our study, we found that administration of a bone marrow-stimulating factor (G-CSF) and BMSC in a TBI model provides functional benefits.
Security issues in IEEE 802.11 wireless local area networks: a survey

In the past few years, wireless networks, specifically those based on the IEEE 802.11 standard, have experienced tremendous growth. However, numerous security problems have dampened this growth. The IEEE and vendors sensitive to these issues began a wholesale redesign of the security architecture, while simultaneously producing measures for mitigating existing problems. In this paper, we describe the past and future security architectures as well as the problems and concerns with both. Copyright © 2004 John Wiley & Sons, Ltd.
Accumulation, Detoxification, and Genotoxicity of Heavy Metals in Indian Mustard (Brassica Juncea L.)

Plants of Indian mustard (Brassica juncea L.) were exposed to different concentrations (15, 30, 60, 120 μM) of (Cd, Cr, Cu, Pb) for 28 and 56 d for accumulation and detoxification studies. Metal accumulation in roots and shoots were analyzed and it was observed that roots accumulated a significant amount of Cd (1980 μg g−1 dry weight), Cr (1540 μg g−1 dry weight), Cu (1995 μg g−1 dry weight), and Pb (2040 μg g−1 dry weight) after 56 d of exposure, though in shoot this was 1110, 618, 795, and 409 μg g−1 dry weight of Cd, Cr, Cu, and Pb, respectively. In order to assess detoxification mechanisms, non-protein thiols (NP-SH), glutathione (GSH) and phytochelatins (PCs) were analyzed in plants. An increase in the quantity of NP-SH (9.55), GSH (8.30), and PCs (1.25) μmol g−1 FW were found at 15 μM of Cd, however, a gradual decline in quantity was observed from 15 μM of Cd onwards, after 56 d of exposure. For genotoxicity in plants, cytogenetic end-points such as mitotic index (MI), micronucleus formation (MN), mitotic aberrations (MA) and chromosome aberrations (CA) were examined in root meristem cells of B. juncea. Exposure of Cd revealed a significant (P < 0.05) inhibition of MI, induction of MA, CA, and MN in the root tips for 24 h. However, cells examined at 24 h post-exposure showed concentration-wise recovery in all the end-points. The data revealed that Indian mustard could be used as a potential accumulator of Cd, Cr, Cu, and Pb due to a good tolerance mechanisms provided by combined/concerted action of NP-SH, GSH, and PCs. Also, exposure of Cd can cause genotoxic effects in B. juncea L. through chromosomal mutations, MA, and MN formation.
High Prevalence of Celiac Disease Among Patients Affected by Crohn's Disease

Background: Recent literature has shown a correlation between Crohn's disease (CD) and celiac disease, but a prospective study has not been performed. Our aim was to evaluate the prevalence of celiac disease in a consecutive series of patients affected by CD, in whom the disease was diagnosed for the first time. Methods: From January to December 2004, we diagnosed 27 patients affected by CD (13 men and 14 women; mean age, 32.3 yrs; range, 16‐69 yrs). In all patients, we performed antigliadin, antiendomysium, and antitransglutaminase antibody tests, and the sorbitol H2 breath test evaluation. In case of antibodies and/or sorbitol positivity, esophagogastroduodenoscopy was performed for a small bowel biopsy. Results: Antigliadin, antiendomysium, and antitransglutaminase antibody tests were positive in 8/27 (29.63%), 4/27 (14.81%), and 5/27 (18.52%) patients, respectively, whereas the sorbitol H2 breath test was positive in 11/27 (40.74%) patients: all of them underwent esophagogastroduodenoscopy. Nine of 11 patients showed signs of duodenal endoscopic damage, and 5/9 (55.55%) showed histologic features of celiac disease (18.52% of overall CD population studied): 2 showed Marsh IIIc lesions (1 patient affected by ileal CD and 1 affected by ileo‐colonic CD), 2 showed Marsh IIIb lesions (all of them affected by ileo‐colonic CD), 1 showed a Marsh IIIa lesion (1 patient affected by colonic CD). Conclusions: Prevalence of celiac disease seems to be high among patients affected by CD, and this finding should be kept in mind at the time of the first diagnosis of CD; a gluten‐free diet should be promptly started.
Azithromycin Protects Against Hyperoxic Lung Injury in Neonatal Rats

Bronchopulmonary dysplasia (BPD) is a pulmonary disorder that causes significant morbidity and mortality in premature infants. BPD is pathologically characterized by inflammation, fibrosis, and mucosal necrosis, which leads to emphysematous coalescence of alveoli. We tested the hypothesis that azithromycin, a macrolide antibiotic, would decrease the severity of lung injury in an animal model of BPD. Sixty-three rat pups were randomly divided equally into control, hyperoxia, and hyperoxia plus azithromycin groups. The hyperoxia groups were exposed to > 95% oxygen from days of life 4 to 14. On day 14, the animals were processed for lung histology and tissue analysis. Lung morphology was assessed by mean linear intercept, a measure of alveolar size, with larger values corresponding to lungs that are more emphysematous. The degree of lung inflammation was assessed by quantifying interleukin-6 (IL-6) from lung homogenate. Fifty pups survived to day 14 (control = 21, hyperoxia = 11, hyperoxia + azithromycin = 18). Mortality was increased in the hyperoxia group versus the control group (p < .0001). Treatment with azithromycin improved survival in animals subjected to hyperoxia (p < .05). Azithromycin significantly decreased lung damage as determined by the mean linear intercept in the hyperoxia groups (p < .001). Finally, azithromycin-treated pups had lower levels of IL-6 in lung homogenate from the hyperoxia groups (p < .05). Azithromycin treatment resulted in improved survival, less emphysematous change, and decreased IL-6 levels in an animal model of BPD.
Should We Encode Rain Streaks in Video as Deterministic or Stochastic?

Videos taken in the wild sometimes contain unexpected rain streaks, which brings difficulty in subsequent video processing tasks. Rain streak removal in a video (RSRV) is thus an important issue and has been attracting much attention in computer vision. Different from previous RSRV methods formulating rain streaks as a deterministic message, this work first encodes the rains in a stochastic manner, i.e., a patch-based mixture of Gaussians. Such modification makes the proposed model capable of finely adapting a wider range of rain variations instead of certain types of rain configurations as traditional. By integrating with the spatiotemporal smoothness configuration of moving objects and low-rank structure of background scene, we propose a concise model for RSRV, containing one likelihood term imposed on the rain streak layer and two prior terms on the moving object and background scene layers of the video. Experiments implemented on videos with synthetic and real rains verify the superiority of the proposed method, as compared with the state-of-the-art methods, both visually and quantitatively in various performance metrics.
A Longitudinal Assessment of the Effect of Resident‐Centered Care on Quality in Veterans Health Administration Community Living Centers

OBJECTIVE To examine whether changes in resident-centered care (RCC) over time were associated with changes in quality. DATA SOURCES/STUDY SETTING Data sources were the Minimum Dataset quality indicators (which consist of measures of both prevalence and incidence of adverse events) and the Artifacts of Culture Change Tool (which measures RCC; FYs 2009-2012) from 130 Veterans Health Administration community living centers. STUDY DESIGN A retrospective longitudinal study. DATA COLLECTION/EXTRACTION METHODS Data were from VA secondary data sources. PRINCIPAL FINDINGS The overall relationship between RCC and quality was not statistically significant (p = .22), although there was a weakly significant negative relationship (i.e., increased RCC was associated with poorer quality) in the seven quarters after implementation of an automated version of the Artifacts Tool (p = .08). In facility-specific analyses, there were 15 facilities with a weakly significant (p < .10) positive relationship between RCC and quality and 21 with a weakly significant negative relationship. Adjusted cost per patient day was over 50 percent higher in the 21 facilities with a negative relationship than in the 15 facilities with a positive relationship (p < .05). CONCLUSIONS The Artifacts score is a formal performance metric in the VA, and thus, facilities were explicitly incentivized to increase RCC. Using qualitative methods to identify characteristics that distinguished those facilities able to increase both RCC and quality from those that suffered declines in quality as RCC was improved is an important follow-up to this study.
Understanding user experiences of online travel review websites for hotel booking behaviours: an investigation of a dual motivation theory

ABSTRACT Online travel review websites (a form of social media) have become an important information source for online travellers. However, previous studies have mainly focused on the issue of the adoption of social media websites. Recognising the theoretical gap in tourism, this paper tries to understand users’ experiences in using social media, associated with user satisfaction and determining the success of an information system. The findings of this research indicate that, in accordance with the motivation theory, both extrinsic (i.e. the argument quality of consumer reviews) and intrinsic (i.e. the credibility of the source) motivation play important roles that enhance user satisfaction. Specifically, the completeness, relevance, flexibility, and timeliness of the argument quality as well as the trustworthiness of source credibility positively influence user satisfaction, leading to intentions to reuse the website and purchase the tourism product. Practical implications for online tourism marketers are also discussed.
The transnationalisation of far right discourse on Twitter

ABSTRACT How transnational are the audiences of far right parties and movements on Twitter? While an increasing number of contributions addresses the topic of transnationalism in far right politics, few systematic investigations exist on the actors and discourses favored in transnational exchanges on social media. Building on the literature on the far right, social movements, transnationalism and the Internet, the paper addresses this gap by studying the initiators and the issues that are favored in online exchanges between audiences of far right organizations, e.g. political parties and movements across France, Germany, Italy and the United Kingdom. We use a new dataset on the activities of far right Twitter users that is analyzed through a mixed methods approach. Using social network analysis, we detect transnational links between far right organizations across countries based on retweets from audiences of far right Twitter users. Retweets are qualitatively coded for content and compared to the content retweeted within national communities. Finally, using a logistic regression, we quantify the level to which specific issues and organizations enjoy high levels of attention across borders. Subsequently, we use discourse analysis to qualitatively reconstruct the interpretative frames accompanying these patterns. We find that although social media are often ascribed much power in favoring transnational exchanges between far right organizations, there is little evidence of this. Only a few issues (anti-immigration and nativist interpretations of the economy) garner transnational far right audiences on Twitter. In addition, we find that more than movements, political parties play a prominent role in the construction of a transnational far right discourse.
Senates : Moving from Mystery to Models

Undoubtedly faculty play an integral role in the intellectual enterprise of colleges and universities (Barnett, 1994). Their role in governance and decision-making, however, is a point of contention on many campuses (Gerber, 2001). In the tradition of higher education, approximately 90% percent of four-year institutions have a faculty governing body that, for better or worse, participate in campus governance (Gilmour, 1991). Yet research and theoretical knowledge about their involvement in campus decision-making is limited (Kezar & Eckel, forthcoming). For example, functional and structural differences that exist among senates, within or across institutional types, are virtually unknown. As a result, litigious discussion about faculty governance continues in the absence of descriptive or theoretical understanding about how faculty senates participate in decision making.
Social capital and growth: causal evidence from Italian municipalities

The macroeconomic effects of social capital are typically studied using data at country, region or, at most, province level of aggregation. However, social capital is defined by connections among agents who know each other and its effects, if any, should be detected at a more detailed level of spatial aggregation. To the best of our knowledge, this is the first study using longitudinal municipality-level data to investigate the causal link between social capital and growth. We extend earlier research by accounting for the endogeneity of all the covariates as well as unobserved heterogeneity. The evidence suggests that social capital has been a source of growth inequality in Italy between 1951 and 2001. The causal effect of social capital on growth is positive, on average, and stronger in the Centre-North of Italy. In addition, it was higher in the 1950s. The paper also presents local estimates of the growth return to social capital, which are of interest for specific sub-populations of municipalities.
L'effet d'une variation du montant de certains transferts du système socio-fiscal sur le niveau de vie : résultats sur 2016 à partir du modèle de microsimulation Ines (Cahier de variantes)

Le modele de microsimulation Ines est utilise pour simuler les effets sur le niveau de vie d’une variation du montant des principaux transferts en France. Plus precisement, sont simulees une hausse et une baisse exceptionnelles de respectivement 1 %, 3 % et 5 % ayant lieu le 1er janvier 2016 du montant du revenu de solidarite active (RSA), du minimum vieillesse (Aspa), de l’allocation adulte handicape (AAH), de la prime d’activite, de la base mensuelle des allocations familiales (Bmaf), du bareme des allocations logement, des tranches du bareme de l’impot sur le revenu, et des taux de CSG et CRDS. Sont presentes les effets de ces variations sur les indicateurs d’inegalites et de pauvrete, le niveau de vie par decile des menages, le revenu disponible total des menages (et donc le cout ou gain budgetaire) et les variations des masses et des effectifs de beneficiaires des differents transferts.
One-year follow-up of multisystemic therapy as an alternative to the hospitalization of youths in psychiatric crisis.

OBJECTIVE This study presents findings from a 1-year follow-up to a randomized clinical trial comparing multisystemic therapy (MST), modified for use with youths presenting psychiatric emergencies, with inpatient psychiatric hospitalization. METHOD One hundred fifty-six children and adolescents approved for emergency psychiatric hospitalization were randomly assigned to home-based MST or inpatient hospitalization followed by usual services. Assessments examining mental health symptoms, out-of-home placement, school attendance, and family relations were conducted at five times: within 24 hours of recruitment, shortly after the hospitalized youth was released from the hospital (1-2 weeks after recruitment), at the completion of MST (average of 4 months postrecruitment), and 10 and 16 months postrecruitment. RESULTS Based on placement and youth-report measures, MST was initially more effective than emergency hospitalization and usual services at decreasing youths' symptoms and out-of-home placements and increasing school attendance and family structure, but these differences generally dissipated by 12 to 16 months postrecruitment. Hospitalization produced a rapid, but short-lived, decrease in externalizing symptoms based on caregiver reports. CONCLUSION Findings suggest that youths with serious emotional disturbance might benefit from continuous access to a continuum of evidence-based practices titrated to clinical need.
Reflection of Electromagnetic Wave Using a Plasma Sheet

A stable plasma sheet with an area of 250 × 300 mm2 was generated between two different pairs of electrode models, a pair of hollow electrodes discharge model, a single hollow cathode, and a metal plate anode discharge model, by direct current discharge under an axial magnetic field. The electron density distribution across the sheet plasmas in the two different discharge models were compared by the measurements using Langmuir probe. The results showed that the electric field configuration of the pair of hollow electrodes discharge model was more effective to confine the electrons and showed higher electron density in the sheet plasma. The microwave return loss of the sheet plasma had been studied by using a microwave scale network analyzer and the sheet plasma exhibited almost the same reflection capability with an aluminum plate in a microwave range of 2.2 to 4 GHz, which indicated that the sheet plasma with high electron density could be used to reflect electromagnetic wave, and hopefully replace metal plate antenna.
Effects of AGEs on oxidation stress and antioxidation abilities in cultured astrocytes.

OBJECTIVE To investigate whether two kinds of in vitro prepared advanced glycation end products (AGEs), Glu-BSA and Gal-BSA, could change oxidation stress and anti-oxidation abilities in astrocytes, and thus might contribute to brain injury. METHODS Changes of GSH, MDA, SOD, MAO-B, nitric oxide were measured after AGEs treatment. RESULTS Both 0.1 g/L Glu-BSA and Gal-BSA could slightly decrease GSH level, while 1 g/L of them significantly decreased GSH level by 35% and 43% respectively. The MDA levels of both 1 g/L AGEs treated groups (306 +/- 13 and 346 +/- 22) were higher than that of the normal group (189 +/- 18), which could be inhibited by free radical scavenger NAC. The SOD activities of both 1 g/L AGEs treated groups (67.0 +/- 5.2 and 74.0 +/- 11.0) were lower than that of the normal group (85.2 +/- 8.0). Both 0.1 g/L AGEs could slightly increase the activity of MAO-B, while 1 g/L of them could increase MAO-B activity by 1.5 and 1.7 folds respectively. Both AGEs stimulation could produce NO level by 1.7 and 2 folds respectively. CONCLUSION Enhanced levels of astrocytic oxidation stress and decrease of antioxidation abilities may contribute to, at least partially, the detrimental effects of AGEs in neuronal disorders and aging brain.