Miracle-dz/UniFAR-FTUs huggingface dataset:
PERFORMANCE ANALYSIS AND BER COMPARISON OF VARIOUS CHANNELS IN OFDM SYSTEM 1

In multi-carrier transmission, Orthogonal frequency division multiplexing (OFDM) is a unique case as it is capable of maintaining high data rate requirement of the present wireless communication systems. But a very important part regarding communication is the channel or we can say the path on which the signal travels up to long distances. The path itself has its own disadvantages. In wireless communication systems channel plays a very important role, since the estimation of channel is a crucial part in OFDM system, sometimes it becomes challenging to comprehend the appropriate channel evaluation method for OFDM systems so that an appropriate technique can be applied. In our paper we have investigated three different channels namely Raleigh , Rician and AWGN and evaluated their performance on the basis of BER comparison. For simplicity purpose estimation of channel at pilot frequencies is based on LS & MMSE estimation techniques by utilizing 16-QAM modulation scheme.
A Multi-Level Perspective on Ambidexterity : The case of the SOLEIL Synchrotron Research Facility

Sustained long term success requires from organizations to effectively balance exploitative and explorative innovation activities and excel at both, a capability called organizational ambidexterity (Duncan, 1976; Tushman and O’Reilly 1996). The ability to be ambidextrous requires however from organizations to embrace and appropriately manage the tensions that arise from simultaneously conducting both types of learning activities (March, 1991; Smith and Lewis, 2011).
Exactly Soluble Model of a 3 D Symmetry Protected Topological Phase of Bosons with Surface Topological Order

We construct an exactly soluble Hamiltonian on the D=3 cubic lattice, whose ground state is a topological phase of bosons protected by time reversal symmetry, i.e a symmetry protected topological (SPT) phase. In this model anyonic excitations are shown to exist at the surface but not in the bulk. The statistics of these surface anyons is explicitly computed and shown to be identical to the 3-fermion Z2 model, a variant of Z2 topological order which cannot be realized in a purely D=2 system with time reversal symmetry. Thus the model realizes a novel surface termination for SPT phases, which only becomes available in D=3: that of a fully symmetric gapped surface with topological order. The 3D phase found here is also outside the group cohomology classification that appears to capture all SPT phases in lower dimensions. It is identified with a phase previously predicted from a field theoretic analysis, whose surface is roughly ‘half’ of a Kitaev E8 phase. Our construction utilizes the Walker-Wang prescription to create a 3D confined phase with surface anyons,which can be extended to other symmetry classes and topological orders.
A Smart Clustering Management for Concurrent Digital Photos using EXIF Metadata

Currently digital camera prevails in daily life. But the low cost of photographing by digital camera, managing a number of digital photos is burdensome to most users. Therefore, we need intelligent management tools for digital photos. In this paper, we propose a novel clustering algorithm for concurrent digital photos obtained from multiple cameras. Since the previous photo clustering can be applied to a single camera, a group of photos obtained from a few different cameras can not be classified to meet a user preference. In order to help this situation, we newly define the temporal/spatial combined clustering for the set of group photos taken from different cameras. We newly defined the spatial similarity using block alignment for two independent photos. If a user submit a photo clustering which shows one’s preference between spatial and temporal clustering, then we can cluster other photo set according to the preference of reference clustering characteristics. In this method, the EXIF metadata takes essential role. In experiments we tested with more than a thousand of photos taken from group tourists. The final result was quite satisfactory compared to previous methods based on temporal (spatial) criteria only.
Thermal , compositional , and compressional demagnetization of cementite 1

Earth and Environmental Science, LDEO, Columbia University, Palisades, NY 10964, USA 3 Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI 48109, USA 4 Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA 5 Department of Physics Engineering, Hacettepe University, 06800 Beytepe, Ankara, TURKEY 6 Department of Earth and Planetary Sciences, Macquarie University, North Ryde, NSW 2109 and 7 The Bragg Institute, Australian Nuclear Science and Technology Organisation, Locked Bag 2001, 8 Kirrawee DC, NSW 2232, AUSTRALIA 9 10 Abstract 11
BONUSES AND PROMOTION TOURNAMENTS: THEORY AND EVIDENCE* Forthcoming in the Economic Journal

Standard models of promotion tournaments do not distinguish between wages and bonuses and thus cannot explain variation in the use of bonuses. We combine classic and market-based tournament theories to develop a model in which wages and bonuses serve distinctly different roles. We use this model to derive testable predictions which we test employing both a single firm dataset and a dataset encompassing a large segment of the Finnish economy. Our empirical analysis supports the testable predictions and shows that our theoretical approach better matches the data than alternative theories of bonus determination based on arguments already in the literature. A seminal contribution in the personnel economics literature is the idea of promotion tournaments first put forth in Lazear and Rosen (1981). In this theory large wage increases are attached to promotions in order to achieve efficient effort levels for lower level workers. One drawback of the Lazear and Rosen approach, however, is that it makes no distinction between * Corresponding author: Emre Ekinci, Universidad Carlos III de Madrid, Calle Madrid, 126, 28903 Getafe (Madrid), SPAIN. Email: emre.ekinci@uc3m.es. We thank Fran Blau, Kevin Hallock, George Jakubson, Victoria Prowse, Kjell Salvanes (the editor), Jan Zabojnik, two anonymous referees, and seminar and conference participants at Cornell University, MIT, Universidad Carlos III de Madrid, Queen’s University, IAE-CSIC, and the 2016 SOLE meetings for helpful comments. We also thank Michael Gibbs for providing one of the datasets used in this study. Financial support from Spain’s Ministry of Economy and Competitiveness (ECO2016-75961-R) and the Academy of Finland (Grant no. 258771) are gratefully acknowledged.
Report of Sex Determination , Determines Who Helps in Eusocial Populations

Laura Ross,1,2,* Andy Gardner,2,3,4 Nate Hardy,5 and Stuart A. West2 1School of Biological Sciences, Institute of Evolutionary Biology, University of Edinburgh, Edinburgh, EH9 3JT, UK 2Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, UK 3Balliol College, University of Oxford, Broad Street, Oxford OX1 3BJ, UK 4School of Biology, University of St Andrews, Dyers Brae, St Andrews KY16 9TH, UK 5Department of Entomology and Plant Pathology, Auburn University, Auburn, AL 36849, USA
Feedback Linearized-Based and Approximated Parallel Distributed Compensation Approach: Theory and Experimental Implementation

In this paper, the Parallel Distributed Compensation (PDC) method is used to stabilize a cart-mounted inverted pendulum and Overhead Crane model. One of the significant issues of using PDC approach for systems with nonlinear terms is finding a linear sectors. Since equations of motion (EoM) of an inverted pendulum and overhead crane include some complicated nonlinear terms, finding sectors is often impossible. Therefore, the traditional PDC has some difficulties from the practical point of view. In order to overcome such a problem, here, two different approaches have been proposed. In the first approach, prior to utilizing a PDC, complex equations have been simplified using feedback linearization method. PDC method is then applied to the obtained closed loop system. In the second strategy, named as the approximated PDC, after eliminating the small terms in the EoM, PDC method is applied. The results of simulations pertinent to PDC controller and traditional LQR method have been compared. Finally, for verification of the presented approximated approach, practical implementation on the experimental crane setup has been done and results reported and compared with simulation.
Simulation-driven exploration of NVM as a substitute for DRAM in the main memory = Explorando a substituição de DRAM por NVM na memória principal através de simulação

Computer memory systems have relied on volatile memories to enhance their performance for quite a time by now. SRAM technology is used at the closest layer to the CPU to accelerate the access time to the main memory, which is traditionally composed by DRAM technology. Non-volatile memories are left as secondary memories, serving as an extension of the main memory and allowing data to be persisted. Persistent data, for residing in the farthest memory layer from the CPU, are commonly not manipulated directly. They are indirectly manipulated with their transient copies that may differ, in form, from their persistent form. These transient copies will also be scattered throughout the several volatile memories in the memory hierarchy, incurring in data replication. This scenario may change with the adoption of emerging non-volatile memories (NVMs), like phase change memory for example, that may allow persistent data to exist in the main memory. This might allow a direct manipulation of persistent data, accelerating their access time and probably reducing the usage of replications. Unfortunately, NVMs are still not broadly available on the market, and research on their usage is still mostly done through simulation. We present a simulator to explore the usage of NVMs in the main memory. We demonstrate the usage of the simulator in two scenarios, the first where DRAM is completely replaced for NVMs, and the second in which a hybrid architecture employing DRAM and NVM is explored. For now, DRAM provides faster access times when compared with NVMs. We show that the use of a main memory composed exclusively of NVMs may incur in slowdowns as high as 5.3, but may be negligible in some cases. In the hybrid main memory scenario, we showed that, although persistent data can be manipulated directly, there are cases in which is still better to work with transient copies, depending on the frequency of usage of the persistent data. To allow programs to make use of the non-volatility presented in main memory, we provide an API, called NVMalloc, that is able to allocate persistent memory in the main memory. We expect the simulator to be a starting point for future researches regarding the usage of NVMs.
Technical Section Di!usion rendering ofblack ink paintings using new paper and ink models

A practical technique is presented for e$ciently rendering oriental black ink paintings with realistic di! usion e! ects, being based on models which simulate a variety ofpaper types and black ink properties. Strokes can be generated by bristles or elastic brush models simulating those actually used in oriental black ink painting. Incorporation ofpaper modeling allows users to draw on a wide variety ofpapers having either randomly generated "ber meshes or uniform meshes commonly found in fabrics which are also frequently used. This accordingly provides a unique platform for real-time dynamic simulation ofrealistic ink di ! usion in that the resultant di! usion images re#ect the texture and the global change ofgray tones as well as local temporal variations speci "c to a particular paper. Examples are presented demonstrating the capability ofthe proposed technique f handling di ! erent ink and paper properties. 2001 Elsevier Science Ltd. All rights reserved.
Co-Expression Network Analysis Revealed That the ATP5G1 Gene Is Associated With Major Depressive Disorder

Major depressive disorder (MDD) is a leading cause of disability worldwide, although its etiology and mechanism remain unknown. The aim of our study was to identify hub genes associated with MDD and to illustrate the underlying mechanisms. A weighted gene co-expression network analysis (WGCNA) was performed to identify significant gene modules and hub genes associated with MDD in peripheral blood mononuclear cells (PBMCs) (n = 45). In the blue module (R 2 = 0.95), five common hub genes in both co-expression network and protein–protein interaction (PPI) network were regarded as “real” hub genes. In another independent dataset, GSE52790, four genes were still significantly down-regulated in PBMCs from MDD patients compared with the controls. Furthermore, these four genes were validated by quantitative real-time polymerase chain reaction (qRT-PCR) in PBMCs from 33 MDD patients and 41 healthy controls. The qRT-PCR analysis showed that ATP synthase membrane subunit c locus 1 (ATP5G1) was significantly down-regulated in samples from MDD patients than in control samples (t = −2.89, p-value = 0.005). Moreover, this gene was significantly differentially expressed between patients and controls in the prefrontal cortex (z = −2.83, p-value = 0.005). Highly significant differentially methylated positions were identified in the Brodmann area 25 (BA25), with probes in the ATP5G1 gene being significantly associated with MDD: cg25495775 (t = 2.82, p-value = 0.008), cg25856120 (t = −2.23, p-value = 0.033), and cg23708347 (t = −2.24, p-value = 0.032). These findings indicate that the ATP5G1 gene is associated with the pathogenesis of MDD and that it could serve as a peripheral biomarker for MDD.
Chaperones and Beyond as Key Players in Pluripotency Maintenance

Pluripotency is orchestrated by distinct players and chaperones and their partners have emerged as pivotal molecules in proteostasis control to maintain stemness. The proteostasis network consists of diverse interconnected pathways that function dynamically according to the needs of the cell to quality control and maintain protein homeostasis. The proteostasis machinery of pluripotent stem cells (PSCs) is finely adjusted in response to distinct stimuli during cell fate commitment to determine successful organism development. Growing evidence has shown different classes of chaperones regulating crucial cellular processes in PSCs. Histones chaperones promote proper nucleosome assembly and modulate the epigenetic regulation of factors involved in PSCs’ rapid turnover from pluripotency to differentiation. The life cycle of pluripotency proteins from synthesis and folding, transport and degradation is finely regulated by chaperones and co-factors either to maintain the stemness status or to cell fate commitment. Here, we summarize current knowledge of the chaperone network that govern stemness and present the versatile role of chaperones in stem cells resilience. Elucidation of the intricate regulation of pluripotency, dissecting in detail molecular determinants and drivers, is fundamental to understanding the properties of stem cells in order to provide a reliable foundation for biomedical research and regenerative medicine.
Diameter Effect on the Wall Temperature Behaviors During Supercritical Water Heat Transfer Deterioration in Circular Tubes and Annular Channels

Diameter effect on heat transfer deterioration (HTD) was numerically studied for supercritical water flowing upward in circular tubes and annular channels at high heat flux and low mass flux based on validated turbulence model. When the same boundary conditions were applied, i.e. heat flux, mass flux, and inlet temperature, it was found that in circular tubes the first wall temperature peak moves upstream and the magnitude of the peak increases first and then decreases with the increase of tube diameter, the second peak moves downstream with the increase of tube diameter. Whereas in annular channels with a fixed inner diameter, HTD is suppressed when the outer diameter is small and HTD occurs gradually with the increase of outer diameter. These phenomena are consistent with previous experimental results. The mechanism was analyzed based on fully developed turbulent velocity profile at the inlet of the heated sections. Increasing inner diameter for circular tubes or outer diameter for annular channels will result in the decrease of maximum velocity and velocity gradient in the near wall region, which makes velocity profile in this region much easier to be flattened by the buoyancy. Then an M-shaped velocity profile is formed, which will significantly decrease the Reynolds shear stress and turbulent kinetic energy and hence impair the heat transfer and cause HTD. For the same flow conditions, HTD is much easier to occur in circular tubes than in annular channels with the same hydraulic diameters.
Escalating human–wildlife conflict in the Wolong Nature Reserve, China: A dynamic and paradoxical process

Abstract Human–wildlife conflict (HWC) has become a conservation focus for both protected area management and local communities in many parts of the world. The incidence and mediation of HWCs are rooted in coupled environmental and socioeconomic contexts. A systematic analysis of HWCs was undertaken in 2016 in the Wolong Nature Reserve located in Sichuan Province, southwestern China. Semi‐structured interviews were conducted with 201 local households to understand the occurrence of wildlife damage, the wildlife species involved, the typical losses incurred, and the mitigation measures employed. The results revealed that local HWC has increased rapidly in recent years due to effective biodiversity conservation and ecological restoration policies. Despite the widespread occurrence of HWCs, with nearly all respondents stating that they had suffered a financial loss, appropriate compensation schemes are lacking. Local respondents' expected compensation amount and style were investigated, and it was concluded that integrated compensation and community development plans are needed to mediate and resolve HWC. In particular, greater attention should be given to reduce local households' dependence on agriculture and transform local livelihood strategies to alternative economic activities not related to farming, such as ecotourism development and migrating employment.
Shoal familiarity modulates effects of individual metabolism on vulnerability to capture by trawling

The role of shoal familiarity in modulating relationships between individual fish’s metabolic traits and vulnerability to capture in a simulated trawl were tested in the lab. Fish tested in familiar shoals showed a negative relationship between anaerobic metabolic capacity and time spent in the trawl net, but not fish tested in unfamiliar shoals.
The Potential of Telemedicine to Improve Pediatric Concussion Care in Rural and Remote Communities in Canada

Concussion is a form of mild traumatic brain injury that affects thousands of Canadian children and adolescents annually. Despite national efforts to harmonize the recognition and management of pediatric concussion in Canada, timely access to primary and specialized care following this injury remains a challenge for many patients especially those who live in rural and remote communities. To address similar challenges facing patients with stroke and other neurological disorders, physicians have begun to leverage advances in telemedicine to improve the delivery of specialized neurological care to those living in medically underserved regions. Preliminary studies suggest that telemedicine may be a safe and cost-effective approach to assist in the medical care of select patients with acute concussion and persistent post-concussion symptoms. Here we provide an overview of telemedicine, teleneurology, the principles of concussion assessment and management, as well as the current state of concussion care in Canada. Utilizing preliminary evidence from studies of telemedicine in concussion and experience from comprehensive systems of care for stroke, we outline steps that must be taken to evaluate the potential of telemedicine-based concussion networks to improve the care of pediatric concussion patients living in underserved rural and remote communities in Canada.
A molecular study of Neophyllaphisvaricolor (Hemiptera, Aphididae) in Costa Rica

Abstract The genus Neophyllaphis (Takahashi) (Aphididae: Neophyllaphidinae) is composed of 18 species; however, in the Americas only nine species have been reported previously. A new species, Neophyllaphisvaricolor Miller & Halbert, was described in 2014 in USA. Colonies resembling those of this new species have been observed in Costa Rica on Podocarpus spp. In order to determine if N.varicolor is also present in Costa Rica, we sampled Neophyllaphis colonies from Podocarpusfalcatus and P.chinensis. Additionally, we sampled individuals from Podocarpus sp. in Spain and Vietnam. DNA of each sample was extracted and used to amplify and sequence the cytochrome c oxidase subunit I (COI) and elongation factor I (EF-1α) partial regions. According to morphological characteristics, sequences comparisons done in GenBank and BOLD, and phylogenetic analyses, the colonies collected from Podocarpus spp. in Costa Rica and the colony from Vietnam corresponded to the species N.varicolor. To the best of our knowledge this is the first report of the presence of N.varicolor in Central America and Vietnam.
Exploring spatial nonstationary environmental effects on Yellow Perch distribution in Lake Erie

Background Global regression models under an implicit assumption of spatial stationarity were commonly applied to estimate the environmental effects on aquatic species distribution. However, the relationships between species distribution and environmental variables may change among spatial locations, especially at large spatial scales with complicated habitat. Local regression models are appropriate supplementary tools to explore species-environment relationships at finer scales. Method We applied geographically weighted regression (GWR) models on Yellow Perch in Lake Erie to estimate spatially-varying environmental effects on the presence probabilities of this species. Outputs from GWR were compared with those from generalized additive models (GAMs) in exploring the Yellow Perch distribution. Local regression coefficients from the GWR were mapped to visualize spatially-varying species-environment relationships. K-means cluster analyses based on the t-values of GWR local regression coefficients were used to characterize the distinct zones of ecological relationships. Results Geographically weighted regression resulted in a significant improvement over the GAM in goodness-of-fit and accuracy of model prediction. Results from the GWR revealed the magnitude and direction of environmental effects on Yellow Perch distribution changed among spatial locations. Consistent species-environment relationships were found in the west and east basins for adults. The different kinds of species-environment relationships found in the central management unit (MU) implied the variation of relationships at a scale finer than the MU. Conclusions This study draws attention to the importance of accounting for spatial nonstationarity in exploring species-environment relationships. The GWR results can provide support for identification of unique stocks and potential refinement of the current jurisdictional MU structure toward more ecologically relevant MUs for the sustainable management of Yellow Perch in Lake Erie.