Miracle-dz/UniFAR-FTUs huggingface dataset:
Performance Evaluation of Mobile Phone Antennas in Physical MIMO Channels Using Polarized Spherical Harmonic Decomposition

Modern wireless communications systems fall on the use of multiple antennas at both link ends in order to achieve increased spectral efficiency and high data rates. Recent works have studied the interaction between the antenna array model and the wave propagation scenario in order to provide insight into spatial degrees of freedom of multiple-antenna communication systems. This paper presents a polarization-sensitive MIMO channel decomposition model using spherical harmonics expansion. This approach allows the separation of co- and cross-polarized end-to-end MIMO channel responses into three components: transmit antennas' response, multipath propagation, and receive antennas' response. Besides the inclusion of polarization in the modeling, the novelty is the presence of time delay. Computer simulations are provided to evaluate the correlation and capacity of practical mobile phone antenna setups in conjunction with the WINNER II channel model, exploring the usability of the improved model.
Selective Defect in Antigen-Induced TCR Internalization at the Immune Synapse of CD8 T Cells Bearing the ZAP-70(Y292F) Mutation1

Cbl proteins have been implicated in ligand-induced TCR/CD3 down-modulation, but underlying mechanisms are unclear. We analyzed the effect of mutation of a cbl-binding site on ZAP-70 (ZAP-Y292F) on dynamics, internalization, and degradation of the TCR/CD3 complex in response to distinct stimuli. Naive CD8 T cells expressing the P14 transgenic TCR from ZAP-Y292F mice were selectively affected in TCR/CD3 down-modulation in response to antigenic stimulation, whereas neither anti-CD3 Ab-, and PMA-induced TCR down-modulation, nor constitutive receptor endocytosis/cycling were impaired. We further established that the defect in TCR/CD3 down-modulation in response to Ag was paralleled by an impaired TCR/CD3 internalization and CD3ζ degradation. Analysis of T/APC conjugates revealed that delayed redistribution of TCR at the T/APC contact zone was paralleled by a delay in TCR internalization in the synaptic zone in ZAP-Y292F compared with ZAP-wild-type T cells. Cbl recruitment to the synapse was also retarded in ZAP-Y292F T cells, although F-actin and LFA-1 redistribution was similar for both cell types. This study identifies a step involving ZAP-70/cbl interaction that is critical for rapid internalization of the TCR/CD3 complex at the CD8 T cell/APC synapse.
Robotic arm joint recognition in space using a neural network trained with pattern matching in LabWindows/CVI with Vision Development Module

In this paper it will be presented a robotic arm joint recognition and control in space with cameras. The robotic arm is recognized in space and this way it can be controlled using the information from the cameras. The robotic arm's joints are recognized using a neural network which is trained with pattern matching in LabWindows/CVI with Vision Development Module. The pattern matching uses a previously learned picture pattern from the robotic arm's image and with image comparison can search for the specific pattern in the target image with the robotic arm. This way the robotic arm's joints can be located and controlled in space.
Assessment of lipid dysfunction in patients on maintenance haemodialysis.

BACKGROUND Dyslipidaemia is a major risk factor of cardiovascular disease in patients on maintenance haemodialysis. Both increased and decreased levels of cholesterol are associated with increased cardiovascular mortality in haemodialysis patients. OBJECTIVE To assess the lipid dysfunction among patients on maintenance haemodialysis in a nephrology unit at Rawalpindi as compared with healthy individuals. METHODS A descriptive comparative study was carried out in a nephrology unit at Rawalpindi, Pakistan. A total of 140 subjects were included consisting of 70 patients on maintenance haemodialysis (MHD) and 70 healthy controls. Body mass index (BMI) was measured according to WHO guidelines. Serum total cholesterol (TC), triglycerides (TG) and high-density lipoprotein cholesterol (HDL-C) were assayed on chemistry analyser. Low-density lipoprotein cholesterol (LDL-C) was calculated by Friedwald equation. RESULT MHD patients had significantly lower BMI, mean (SD) 20.07 (3.66) as compared with the controls 22.88 (3.97) kg/m2 (p < 0.001). The lipid profile among MHD patients and controls are given as mean (SD): (a) Total Cholesterol 3.84 (1.06) vs 4.65 (0.97) (p < 0.001), (b) LDL-C 2.21(0.77) vs 2.93 (0.71) (p < 0.001), (c) HDL-C 0.95 (0.166) vs 0.97 (0.138) (p = NS), (d) Non HDL 2.88 (0.95) vs 3.67 (0.88) (p < 0.0001), (e) Triglycerides 1.68 (1.09) vs 1.69 (0.86) (p = NS). The most common abnormality observed in haemodialysis patients was low HDL-C (81%) followed by increased Non-HDL-C (23%) and increased serum triglycerides (19%). CONCLUSION It is concluded that our patients on maintenance haemodialysis have significantly low BMI, total Cholesterol, LDL-C and Non-HDL-C depicting malnutrition leading to inflammation, accelerated atherosclerosis process and cardiovascular complications.
End coupled stripline BPF using LTCC in millimeter-wave

End coupled stripline BPF using LTCC process in millimeter-wave was designed and fabricated. To design end coupled stripline BPF, the bandgaps of horizontal coupling structure and vertical coupling structure were modeled with w-type capacitance. The bandgap models were verified by a full-wave electromagnetic simulation program. To test a fabricated filter, CPWG-to-stripline transitions were used in input and output ports. To evaluate the validity of this technique, order-3 Chebyschev BPF centered at 44.2 GHz with a 5% fractional bandwidth (FBW) was used. According to design and measurement results, a performance of insertion loss of 3.6 dB and return loss of 18 dB is achieved at full input/output ports, total size of the filter is 512 /spl times/ 3000 /spl times/ 8000 /spl mu/m.
Construction de facettes tridimensionnelles par mise en correspondance de régions en stéréovision

Ce memoire presente un systeme de reconstruction 3-d par mise en correspondance des regions d'une paire d'images stereoscopiques. La mise en correspondance des regions prend en compte l'instabilite des caracteristiques radiometriques et geometriques des regions, ainsi que la coherence topologique (graphes d'adjacences). Cette methode cherche d'abord a apparier les regions homologues verifiant un ensemble de contraintes tres selectives. Puis, ces couples de regions de base sont utilises afin de propager graduellement l'appariement. Enfin, un systeme de regles a ete mis en uvre afin d'ameliorer simultanement les resultats de l'appariement et de la segmentation par fusion de regions celibataires a des regions deja appariees. La complementarite des segmentations en regions et en contours, a aussi ete exploitee afin de developper une premiere methode de reconstruction 3-d basee sur un processus cooperatif d'extraction des primitives structurelles 2-d appelees facettes 2-d. Par superposition des segmentations en regions et en contours, des segments de contours sont d'abord extraits et groupes sous forme de sous-ensembles homologues appeles pseudo-facettes 2-d, puis une mise en correspondance locale des segments est effectuee au sein des facettes 2-d homologues. Les facettes planes 3-d sont obtenues en approximant par la methode des moindres carres par un plan les donnees 3-d obtenues par triangulation. La deuxieme methode de reconstruction 3-d par recalage des frontieres des regions effectue uniquement des calculs bases sur des primitives 2-d. La contrainte 2-d issue de l'hypothese de planarite dans l'espace 3-d a ete exprimee dans un nouveau modele obtenu apres rectification. Le probleme d'optimisation combinatoire obtenu a ete ensuite resolu par un algorithme de recuit simule
Surface parameter inversion scheme over agricultural fields with crop residues and under low vegetation cover from RADARSAT-2 imagery

Many research studies have investigated the retrieval of surface parameters for bare soils. This study attempts to take into account agricultural fields with crop residues and low vegetation cover. An adaptive two-component decomposition (ATCD) method is developed in this paper to invert surface parameters in these fields. The study area is located in Southwestern Ontario, Canada where two wheat fields and two corn-residue fields are selected as sample sites. Three fully polarimetric RADARSAT-2 data, which were acquired in 2013 and 2014 respectively, are employed for the validation. The ATCD has 100% inversion rate compared with the Bragg and X-Bragg models, while its root mean square errors (RMSE) of the soil moisture and roughness have the lowest value of 6.72% and 0.33, respectively. The derived soil moisture in wheat field also has the lowest RMSE value of 3.97% compared with the Y-CIEM.
Modeling Auditory Pathway for Intelligent Information Acquisition

An auditory model has been developed for an intelligent speech information acquisition system in real-world noisy environment. The developed mathematical model of the human auditory pathway consists of three components, i.e. the nonlinear feature extraction from cochlea to auditory cortex, the binaural processing at superior olivery complex, and the top-down attention from higher brain to the cochlea. The feature extraction is based on information-theoretic sparse coding throughout the auditory pathway. Also, the time-frequency masking is incorporated as a model of the lateral inhibition in both time and frequency domain. The binaural processing is modeled as the blind signal separation and adaptive noise canceling based on the independent component analysis with hundreds of time-delays for noisy reverberated signals. The Top-Down (TD) attention comes from familiarity and/or importance of the sensory information, i.e. the sound, and a simple but efficient TD attention model had been developed based on the.
A distinct subset of glioma cell lines with stem cell‐like properties reflects the transcriptional phenotype of glioblastomas and overexpresses CXCR4 as therapeutic target

Glioblastomas contain stem‐like cells that can be maintained in vitro using specific serum‐free conditions. We investigated whether glioblastoma stem‐like (GS) cell lines preserve the expression phenotype of human glioblastomas more closely than conventional glioma cell lines. Expression profiling revealed that a distinct subset of GS lines, which displayed a full stem‐like phenotype (GSf), mirrored the expression signature of glioblastomas more closely than either other GS lines or cell lines grown in serum. GSf lines are highly tumorigenic and invasive in vivo, express CD133, grow spherically in vitro, are multipotent and display a Proneural gene expression signature, thus recapitulating key functional and transcriptional aspects of human glioblastomas. In contrast, GS lines with a restricted stem‐like phenotype exhibited expression signatures more similar to conventional cell lines than to original patient tumors, suggesting that the transcriptional resemblance between GS lines and tumors is associated with different degrees of “stemness”. Among markers overexpressed in patient tumors and GSf lines, we identified CXCR4 as a potential therapeutic target. GSf lines contained a minor population of CXCR4hi cells, a subfraction of which coexpressed CD133 and was expandable by hypoxia, whereas conventional cell lines contained only CXCR4lo cells. Convection‐enhanced local treatment with AMD3100, a specific CXCR4 antagonist, inhibited the highly invasive growth of GS xenografts in vivo and cell migration in vitro. We thus demonstrate the utility of GSf lines in testing therapeutic agents and validate CXCR4 as a target to block the growth of invasive tumor‐initiating glioma stem cells in vivo. © 2011 Wiley‐Liss, Inc.
Region feature extraction and classification

Since the 1970s land remote sensing images have been widely used in environment protection, territory management, military, and so on. Moreover, the remote sensing images provide the whole body of information of some regions like mountains, rivers, towns, villages, oceans and other land objectives. How do we extract the significant parts we recovered from the remote sensing images? This paper demonstrates use of the single value feature extraction method, which uses the single value decomposition based on mesh samples to obtain the eigenvalues of the image matrixes. The SPOT satellite remote sensing images are used as models. The size of the meshes are defined by 100 X 100 pixels. Using this method, we experimented on four typical regions and acquired optimal vectors and succeeded in the recognition and classification of the regions. Also, this method has a high speed in computation. The above listed reasons proved that the single value decomposition method is efficient in the classification and the recognition of the typical regions of remote sensing images.
Revisando a logística de distribuição de álcool etílico

Este estudo mostra a vantagem economica da distribuicao descentralizada de alcool etilico, diretamente a partir das usinas produtoras, contra a politica usualmente utilizada de distribuicao de varios produtos (alcool, gasolina e oleo diesel) com o intermedio de bases de distribuicao. A analise de investimentos utilizou um modelo de distribuicao baseado em programacao linear para avaliar os custos logisticos. Os resultados quantitativos do estudo influenciaram o cliente do estudo (um dos produtores de alcool) a iniciar esforcos para que o governo brasileiro alterasse as regulamentacoes restritivas, o que foi feito em julho de 1993.
QUALIDADE DE VIDA NO TRABALHO: UM ESTUDO SOBRE A AVALIAÇÃO POR AGENTES DE SEGURANÇA PENITENCIÁRIA

O Proposito do presente trabalho foi o de analisar a percepcao dos Agentes de Seguranca Penitenciaria (ASPs) de unidades prisionais da Grande Joao Pessoa quanto a Qualidade de Vida no Trabalho (QVT). O levantamento de dados foi feito com base no modelo teorico sobre QVT de Walton (1973), que apresenta 8 (oito) categorias conceituais de Qualidade de Vida no Trabalho. A presente pesquisa tem, quanto a seus objetivos, carater descritivo, utilizando o metodo do estudo de caso tendo a aplicacao de um questionario como instrumento de coleta de dados. Quanto a analise dos dados esta e uma pesquisa tanto quanti quanto qualitativa. Dos oito criterios estudados apenas um deles (trabalho e espaco total de vida), alcancou uma avaliacao que possa ser considerada positiva. As respostas dadas pelo ASPs tambem deixam transparecer a falta de investimentos no setor, seja por ma gestao ou falta de prioridade na area de seguranca publica. Salientando-se a importância da profissionalizacao da gestao das unidades prisionais, buscando-se valorizar os profissionais de carreira da Secretaria, pela experiencia que possuem e pela oportunidade de crescimento profissional e salarial dos servidores, o que pode contribuir para aumentar sua motivacao.
Deconvolution of poissonian images via iterative shrinkage

The problem of reconstruction of digital images from their degraded measurements is regarded as a problem of central importance in various fields of engineering and imaging sciences. In such cases, the degradation is typically caused by the resolution limitations of an imaging device in use and/or by measurement noise. In the field of optics and nuclear imaging, the noise is commonly assumed to obey a Poisson distribution. In this note, a novel method for de-noising and/or de-blurring of digital images corrupted by Poisson noise is introduced. The proposed method is derived under the assumption that the image of interest can be sparsely represented in the domain of a linear transform. Consequently, a shrinkage-based iterative procedure is proposed, which guarantees convergence to the global maximizer of an associated maximuma-posteriori criterion.
EURON AS AN A GENT

Existing multi-agent reinforcement learning (MARL) communication methods have relied on a trusted third party (TTP) to distribute reward to agents, leaving them inapplicable in peer-to-peer environments. This paper proposes reward distribution using Neuron as an Agent (NaaA) in MARL without a TTP with two key ideas: (i) inter-agent reward distribution and (ii) auction theory. Auction theory is introduced because inter-agent reward distribution is insufficient for optimization. Agents in NaaA maximize their profits (the difference between reward and cost) and, as a theoretical result, the auction mechanism is shown to have agents autonomously evaluate counterfactual returns as the values of other agents. NaaA enables representation trades in peer-to-peer environments, ultimately regarding unit in neural networks as agents. Finally, numerical experiments (a single-agent environment from OpenAI Gym and a multi-agent environment from ViZDoom) confirm that NaaA framework optimization leads to better performance in reinforcement learning.
Magnetic resonance imaging of the rotator cuff muscles after baseball pitching.

AIM The purposes of present study were to investigate quantitatively using functional MR imaging the effect of a series of throwing activities on rotator cuff muscles and to compare the effect of pitching with that of all-out shoulder external rotator exercise as the targeted external rotator muscle group (the infraspinatus and the teres minor). METHODS EXPERIMENTAL DESIGN MRI measurements after 135 baseball pitches or all-out shoulder external rotator exercise (concentric mode) in each subject's nondominant shoulder. PARTICIPANTS 6 amateur baseball pitchers. MEASURES serial T2-weighted images of rotator cuff muscles were obtained before pitching (or shoulder exercise) and immediately, 30, 60 min, 24, 48, 96 hrs after pitching (or shoulder exercise). T2 relaxation times (T2) at each measurement time were calculated for the rotator cuff muscles. RESULTS Both the supraspinatus and the external rotator muscle group showed significant T2 elevations until 96 hrs after pitching. The subscapularis also showed significantly increased T2 until postpitching 48 hrs. On the other hand, a significant T2 elevation continued until 60 min after shoulder exercise, but thereafter returned towards the value at rest over the next 24 hrs. CONCLUSION Long lasting T2 elevations in rotator cuff muscles would be associated with an increase in each intramuscular water content, and may be attributed to the muscle damage that resulted from eccentric contraction during pitching. This information should serve as a useful complement to shoulder injury prevention for baseball pitchers.
Peripheral Nerve Fiber Size in Experimental Diabetes

Serial morphometric observations were made on the tibial nerves of mature rats before and five weeks after the induction of diabetes by streptozotocin. Maximum and average myelinated Fiber diameter did not alter, neither did the relationship between myelin sheath thickness and axon circumference. This confirms previous observations suggesting that the reduced nerve conduction velocity that is known to occur in experimental diabetes is likely to depend on metabolic alterations rather than on structural changes.
Does the Volume of Post-Acute Care Affect Quality of Life in Nursing Homes?

Although short-stay, post-acute nursing home stays are increasing, little is known about the impact of volume of post-acute care on quality of life (QOL) within nursing homes. We analyzed data from the 2010 Minnesota QOL and Consumer Satisfaction survey (N = 13,433 residents within 377 facilities) and federal Minimum Data Set to determine the influence of living in a facility with an above-average proportion of post-acute care residents on six domains of resident QOL. In bivariate analyses, an above-average proportion of Medicare-funded post-acute care had a significant negative influence on four domains (mood, environment, food, engagement) and overall facility QOL. However, when resident and facility covariates were added to the model, only the food domain remained significant. Although the challenges of caring for residents with a diverse set of treatment and caregiving goals may negatively affect overall facility QOL, negative impacts are moderated by individual resident and nursing home characteristics.
To Be Involved or Not to Be Involved? Using Entertainment-Education in an HIV-Prevention Program for Youngsters

The purpose of this study is to gain insight into factors that are associated with youngsters’ involvement with dance4life, a global HIV-prevention program. The Youth Engagement Framework, which includes factors impacting youngsters’ involvement on three levels (individual, social, and system), was used as a theoretical base. In total, 67 youngsters participated, with 21 of them still involved in dance4life’s program, and 46 not. They either were individually interviewed or took part in subsequent online or face-to-face focus groups. Results show that both individual, social, and system-level factors are associated with youngsters’ involvement. Involved youngsters have higher intrinsic motivation to prevent HIV, receive more social support from parents and friends, and are stimulated more by dance4life to remain part of their program than youngsters who are no longer involved. Hence, HIV-prevention programs should focus on all three levels simultaneously to successfully stimulate youngsters’ involvement.
Myosin-dependent endoplasmic reticulum motility and F-actin organization in plant cells

Plants exhibit an ultimate case of the intracellular motility involving rapid organelle trafficking and continuous streaming of the endoplasmic reticulum (ER). Although it was long assumed that the ER dynamics is actomyosin-driven, the responsible myosins were not identified, and the ER streaming was not characterized quantitatively. Here we developed software to generate a detailed velocity-distribution map for the GFP-labeled ER. This map revealed that the ER in the most peripheral plane was relatively static, whereas the ER in the inner plane was rapidly streaming with the velocities of up to ∼3.5 μm/sec. Similar patterns were observed when the cytosolic GFP was used to evaluate the cytoplasmic streaming. Using gene knockouts, we demonstrate that the ER dynamics is driven primarily by the ER-associated myosin XI-K, a member of a plant-specific myosin class XI. Furthermore, we show that the myosin XI deficiency affects organization of the ER network and orientation of the actin filament bundles. Collectively, our findings suggest a model whereby dynamic three-way interactions between ER, F-actin, and myosins determine the architecture and movement patterns of the ER strands, and cause cytosol hauling traditionally defined as cytoplasmic streaming.
The Effects of the Ramadan Month of Fasting on Disease Activity in Patients with Rheumatoid Arthritis

Bulgular: Oruc tutan grupta Ramazan ayindan once ortalama DAS 28 skoru, sonrasina kiyasla daha yuksekti; ancak bu istatistiksel olarak anlamli degildi (p>0.05). Ramazan ayindan sonra daha az sayida hastada sabah katiligi ve halsizlik klinik semptomlari goruldu; ancak bu da istatistiksel olarak anlamli degildi (p>0.05). Oruc tutan grupta sabah katiligi (p=0.001) ve fonksiyonel sinifta (p=0.011) istatistiksel olarak anlamli bir azalma vardi. Bu grupta yuksek kalorili besinlerin alimi, istatistiksel olarak anlamli degildi (p=0.022).
Determination of alpha-amylase activity of Streptomyces spp isolated from Bangladeshi soils

Streptomyces, the largest genus of actinobacteria, is a group of bacte ria which is most commonly isolated from soil. In this st udy, total 24 indigenous Streptomyces spp. were isolated from soil samples collected from di fferent parts of Bangladesh Of them, two species designated as S-31 and S-109 were studied to determine their alpha -amylase activity. The α-amylase activity of S-31 and S-109 was 2.26 unit/ml and 2.67 unit/ml . Based on this study, it can be concl uded that both species of Streptomyces were good candidate for amylase