Miracle-dz/UniFAR-FTUs huggingface dataset:
Test-Bed Implementation of Iterative Transceiver Design and Power Control for Wireless MIMO Interference Networks

Test-bed implementation of iterative transceiver design and power control algorithm for downlink transmission in a multiple-input multiple-output (MIMO) cellular network is presented1. The network consists of three cells where within each cell one base station (BS) communicates with one mobile station (MS) while interferes the other MSs outside the cell. Each terminal is equipped with two antennas and the air interface of the network is designed based on OFDM modulation. The implemented algorithm performs power control to guarantee successful communication at a desired transmission rate while designing transmitter precoders according to the elegant interference alignment concept. Interference alignment in an interference network refers to “a construction of signals in such a manner that they cast overlapping shadows at the receivers where they constitute interference while they remain distinguishable at the intended receivers where they are desired” [3]. An extension of the original interference alignment algorithm, called MaxSINR, along with a power control method is incorporated in our algorithm to guarantee a fixed rate communication and minimization of transmit power at the same time. The indoor measurements were performed on an universal software radio peripheral (USRP) based test-bed. Fig. 1 shows the network structure where the algorithm was implemented in.
Design of A Low Power 8-bit SAR-ADC CMOS

Successive approximation analog-to-digital converter (ADC) implemented in a conventional 0. 18µm CMOS technology with 1.8V and sampling rate 200 KS/s. The SAR composite of sample-and-hold with dummy switch compensation is employed, comparator is low-voltage latched and realized based on current- mode approach, control logic circuit and digital-to-analog conversion consists of binary weighted capacitor arrays for the differential inputs. The ADC has INL and DNL of 0.45 LSB, and signal to noise ratio distortion is 58.8 dB. This design is suitable for standard CMOS technology with low-power and low-cost VLSI implementation. It is well applied when embedded into system-on-chip (SOC) circuit designs.
Reduced-complexity power amplifier linearization for carrier aggregation mobile transceivers

Spurious intermodulation components have recently been identified as a major problem in carrier aggregation mobile transmitters with multi-band power amplifiers (PAs). This article presents novel adaptive digital predistortion (DPD) solutions with reduced complexity in both the predistortion processing and the feedback paths, to tackle this problem. Compared with conventional DPDs which aim to linearize the whole transmit bandwidth, the proposed technique aims at mitigating only those intermodulation components which are most problematic from the spurious emission limit perspective. The proposed technique is verified with extensive simulations in various 3GPP LTE-A carrier aggregation scenarios, showing that the intermodulation spurs can be efficiently mitigated below the spurious emission limit with relatively small back-offs.
Load-balancing heuristics and process behavior

Dynamic load balancing in a system of loosely-coupled homogeneous processors may employ both judicious initial placement of processes and migration of existing processes to processors with fewer resident processes. In order to predict the possible benefits of these dynamic assignment techniques, we analyzed the behavior (CPU, disk, and memory use) of 9.5 million Unix* processes during normal use. The observed process behavior was then used to drive simulation studies of particular dynamic assignment heuristics. Let <italic>F</italic>(·) be the probability distribution of the amount of CPU time used by an arbitrary process. In the environment studied we found:<list><item>(1-<italic>F</italic>(<italic>x</italic>)) ≉ <italic>rx</italic><supscrpt>-<italic>c</italic></supscrpt>, 1.05<<italic>c</italic><1.25. </item><item><italic>F</italic>(·) is far enough from exponential to make exponential models of little use. </item><item>With a foreground-background process scheduling policy in each processor, simple heuristics for initial placement and processor migration can significantly improve the response ratios of processes that demand exceptional amounts of CPU, without harming the response ratios of ordinary processes. </item></list>
Precoder codebook design for linear dispersion codes in spatially and temporally correlated MIMO channels

Despite the popularity and importance of linear dispersion (LD) codes, precoding for LD codes has rarely been investigated. In this paper we propose a method for designing a precoder codebook for LD codes in spatially and temporally correlated channels. Our codebook consists of two parts: a unitary codebook and a diagonal codebook. We propose a systematic algorithm for a unitary code- book design because unitary codebooks are hard to generate using numerical optimization methods. For each column (starting with the first column), we generate a set of vectors in the null space of previous columns. These vectors are generated by skewing i.i. d. unit vector codebooks by means of channel statistics-dependent transformations. A diagonal codebook is generated using a vector quantization technique. We use mutual information as a design criterion throughout this paper. Numerical results illustrate the benefits of matching a codebook to channel statistics and employing adaptive power shaping.
Navigating the Web with Query Tags

We propose to integrate various pieces of information about a web page (search queries, social annotations, terms extracted from the pagetext) into a navigational menu. This menu displays an auxiliary set of tags (navigational tags) selected with the goal of helping user navigation. We propose a novel framework (navigational utility) for comparing different tag selection methods. We also investigate which source of tags is more suitable for our scenario and we conclude that tags extracted from search queries (query tags) are more appropriate.
Modélisation bayésienne du développement conjoint de la perception, l'action et la phonologie

A travers les tâches de perception et de production, les humains peuvent manipuler non seulement des mots et des phrases mais egalement des unites de plus bas niveau tels des syllabes et des phonemes. Les etudes en phonetique sont principalement focalisees sur ces seconds types d'unitees. Un des objectif majeur dans ce domaine et de comprendre comment les humains acquiert et manipulent ces unites.Dans cette these, nous nous interessons a cette question a travers l'utilisation de la modelisation computationnelle en realisant des simulation informatiques a l'aide d'un modele bayesien de la communication nomme COSMO (“Communicating Objects using Sensory-Motor Operations”). Nos etudes s'etendres a trois aspects.Dans une premiere partie, nous etudions les representations cognitives des unites phonetiques. Il est maintenant bien etablie que les unites sont caracterisees par des representations auditives et motrices. En examinant leur role respectifs durant le developpement, nous etablissons leur complementarite a travers ce que nous nommons la propriete >. Dans une seconde partie, nous nous interessons a la variabilite des unites phonetiques, notamment a travers l'etude de la correlation des idiosyncrasies en perception et en production. En comparant plusieurs conditions de developpement, nous etablissons qu'elles s'acquiert a travers un processus de reproduction des categories plutot qu'a une repetition des sons.Dans une troisieme partie, nous analysons la nature des categories phonetiques. En phonetique, il y a un debat autour du statut des syllabes vs. des phonemes dans la communication de la parole. Dans nos simulations, nous examinons leurs acquisitions respectives a travers un apprentissage non supervisee et montrons les particularites necessaires a la communication.
Fabrication challenges for indium phosphide microsystems

From the inception of III–V microsystems, monolithically integrated device designs have been the motivating drive for this field, bringing together the utility of single-chip microsystems and conventional fabrication techniques. Indium phosphide (InP) has a particular advantage of having a direct bandgap within the low loss telecommunication wavelength (1550 nm) range, able to support passive waveguiding and optical amplification, detection, and generation depending on the exact alloy of In, P, As, Ga, or Al materials. Utilizing epitaxy, one can envision the growth of a substrate that contains all of the components needed to establish a single-chip optical microsystem, containing detectors, sources, waveguides, and mechanical structures. A monolithic InP MEMS system has, to our knowledge, yet to be realized due to the significant difficulties encountered when fabricating the integrated devices. In this paper we present our own research and consolidate findings from other research groups across the world to give deeper insight into the practical aspects of InP monolithic microsystem development: epitaxial growth of InP-based alloys, etching techniques, common MEMS structures realized in InP, and future applications. We pay special attention to shedding light on considerations that must be taken when designing and fabricating a monolithic InP MEMS device.
Schisandra chinensis regulates drug metabolizing enzymes and drug transporters via activation of Nrf2-mediated signaling pathway

Drug metabolizing enzymes (DMEs) and drug transporters are regulated via epigenetic, transcriptional, posttranscriptional, and translational and posttranslational modifications. Phase I and II DMEs and drug transporters play an important role in the disposition and detoxification of a large number of endogenous and exogenous compounds. The nuclear factor (erythroid-derived 2)-like 2 (Nrf2) is a critical regulator of a variety of important cytoprotective genes that are involved in disposition and detoxification of xenobiotics. Schisandra chinensis (SC) is a commonly used traditional Chinese herbal medicine that has been primarily used to protect the liver because of its potent antioxidative and anti-inflammatory activities. SC can modulate some DMEs and drug transporters, but the underlying mechanisms are unclear. In this study, we aimed to explore the role of Nrf2 in the regulatory effect of SC extract (SCE) on selected DMEs and drug transporters in human hepatocellular liver carcinoma cell line (HepG2) cells. The results showed that SCE, schisandrin A, and schisandrin B significantly increased the expression of NAD(P)H: Nicotinamide Adenine Dinucleotide Phosphate-oxidase or:quinone oxidoreductase 1, heme oxygenase-1, glutamate–cysteine ligase, and glutathione S-transferase A4 at both transcriptional and posttranscriptional levels. Incubation of HepG2 cells with SCE resulted in a significant increase in the intracellular level of glutathione and total glutathione S-transferase content. SCE significantly elevated the messenger ribonucleic acid and protein levels of P-glycoprotein and multidrug resistance-associated protein 2 and 4, whereas the expression of organic anion transporting peptide 1A2 and 1B1 was significantly downregulated by SCE. Knockdown of Nrf2 by small interfering ribonucleic acid attenuated the regulatory effect of SCE on these DMEs and drug transporters. SCE significantly upregulated Nrf2 and promoted the translocation of Nrf2 from cytoplasm to the nuclei. Additionally, SCE significantly suppressed the expression of cytosolic Kelch-like ECH-associated protein 1 (the repressor of Nrf2) and remarkably increased Nrf2 stability in HepG2 cells. Taken together, our findings suggest that the hepatoprotective effects of SCE may be partially ascribed to the modulation of DMEs and drug transporters via Nrf2-mediated signaling pathway. SCE may alter the pharmacokinetics of other coadministered drugs that are substrates of these DMEs and transporters and thus cause unfavorable herb–drug interactions.
Toward Theory for Dissuasion (or Deterrence) by Denial: Using Simple Cognitive Models of the Adversary t o Inform Strategy

RAND working papers are intended to share researchers' latest findings and to solicit informal peer review. They have been approved for circulation by the RAND Security Research Division but have not been formally edited or peer reviewed. Unless otherwise indicated, working paper can be quoted and cited without permission of the author, provided the source is clearly referred to as a working paper. RAND's publications do not necessarily reflect the opinions of the research clients and sponsors. RAND® is a registered trademark. was co-organized by the Munk School of Global Affairs and the Center for Security Studies, ETH Zurich. It included a number of international scholars from a broad range of university and research institutions. As it turned out, there was a good deal new and interesting in the subject, and much fodder for discussion. This Working Paper extends my conference paper and is intended to invite informal peer review before I complete it at a later date. A chapter-length adaptation of that final paper will appear in a book being edited by Andreas Wenger and Alex Wilner. (NSRD). NSRD conducts research and analysis on defense and national security topics for the U.S. and allied defense, foreign policy, homeland security, and intelligence communities and foundations and other non-governmental organizations that support defense and national security analysis.
End to end measurements of multimedia streaming over LTE

This paper presents some end to end measurements of multimedia services carried out in the frame of LTExtreme project. We provide some understanding of the main parameters and the role of the different protocol layers in the achievement of the desired Quality of Experience (QoE). The trade-offs related to the adaptation algorithms that have been tested in a demonstrator are discussed, showing that adaptation may decrease the video delay at the expenses of decreasing also the efficiency and stability.
The Assimilation of Envisat data (ASSET) project

This paper discusses the highlights of the EU-funded "Assimilation of Envisat data" (ASSET) project, which has involved assimilation of Envisat atmospheric constituent and temperature data into systems based on Numerical Weather Prediction (NWP) models and chemical transport models (CTMs). Envisat was launched in 2002 and is one of the largest Earth Observation (EO) satellites ever built. It carries several sophisticated EO instruments providing insights into chemistry and dynamics of the atmosphere. In this paper we focus on the assimilation of temperature and constituents from Envisat. The overarching theme of the ASSET project has been to bring together experts from all aspects of the data assimilation problem. This has allowed ASSET to address several themes comprehensively: enhancement of NWP analyses by assimilation of research satellite data; studies of the distribution of stratospheric chemical species by assimilation of research satellite data into CTM systems; objective assessment of the quality of ozone analyses; studies of the spatial and temporal evolution of tropospheric pollutants; enhanced retrievals of Envisat data; and data archival and dissemination. Among the results from the ASSET project, many of which are firsts in their field, we can mention: a positive impact on NWP analyses from assimilation of height-resolved stratospheric humidity and temperature data, and assimilation of limb radiances; the extraction of temperature information from the assimilation of chemical species into CTMs; a first intercomparison between ozone assimilation systems; the extraction of information on tropospheric pollution from assimilation of Envisat data; and the large potential of the Envisat MIPAS dataset. This paper discusses these, often novel, developments and results. Finally, achievements of, and recommendations from, the ASSET project are presented.
The APOC Framework for the Comparison of Agent Architectures

In this paper, we present APOC, an agent architecture framework intended for the analysis, comparison, and evaluation of agent architectures. We demonstrate how four main architectures, GRL, ICARUS, PRODIGY, and SOAR can be translated into APOC and briefly discuss how these translations could be used to compare architectures and possibly integrate features from these different architectures within one common archi-
Verbal chunk extraction in French using limited resources

A way of extracting French verbal chunks, inflected and infini tive, is explored and tested on effective corpus. Declarative morphological and local grammar rules specifying chunks and some simple contextual structures are used, relying on limited lexi cal information and some simple heuristic/statistic properties obtained from restricted corpor a. The specific goals, the architecture and the formalism of the system, the linguistic information on which it relies and the obtained results on effective corpus are presented.
Regulation of Photochemical Energy Transfer Accompanied by Structural Changes in Thylakoid Membranes of Heat-Stressed Wheat

Photosystems of higher plants alleviate heat-induced damage in the presence of light under moderate stressed conditions; however, in the absence of light (i.e., in the dark), the same plants are damaged more easily. (Yamauchi and Kimura, 2011) We demonstrate that regulating photochemical energy transfer in heat-treated wheat at 40 °C with light contributed to heat tolerance of the photosystem. Chlorophyll fluorescence analysis using heat-stressed wheat seedlings in light showed increased non-photochemical quenching (NPQ) of chlorophyll fluorescence, which was due to thermal dissipation that was increased by state 1 to state 2 transition. Transmission electron microscopy revealed structural changes in thylakoid membranes, including unstacking of grana regions under heat stress in light. It was accompanied by the phosphorylation of thylakoid proteins such as D1 and D2 proteins and the light harvesting complex II proteins Lhcb1 and Lhcb2. These results suggest that heat stress at 40 °C in light induces state 1 to state 2 transition for the preferential excitation of photosystem I (PSI) by phosphorylating thylakoid proteins more strongly. Structural changes of thylakoid membrane also assist the remodeling of photosystems and regulation of energy distribution by transition toward state 2 probably contributes to plastoquione oxidation; thus, light-driven electrons flowing through PSI play a protective role against PSII damage under heat stress.
Evolution of diverse mechanisms for protecting chromosome ends by Drosophila TART telomere retrotransposons

The retrotransposons HeT-A, TART, and TAHRE, which maintain Drosophila telomeres, transpose specifically onto chromosome ends to form long arrays that extend the chromosome and compensate for terminal loss. Because they transpose by target-primed reverse transcription, each element is oriented so that its 5′ end serves as the extreme end of the chromosome until another element transposes to occupy the terminal position. Thus 5′ sequences are at risk for terminal erosion while the element is at the chromosome end. Here we report that TART elements in Drosophila melanogaster and Drosophila virilis show species-specific innovations in promoter architecture that buffer loss of sequence exposed at chromosome ends. The two elements have evolved different ways to effect this protection. The D. virilis TART (TARTvir) promoter is found in the 3′ UTR of the element directly upstream of the element transcribed. Transcription starts within the upstream element so that a “Tag” of extra sequence is added to the 5′ end of the newly transcribed RNA. This Tag provides expendable sequence to buffer end erosion of essential 5′ sequence after the RNA is reverse transcribed onto the chromosome. In contrast, the D. melanogaster TART (TARTmel) promoter initiates transcription deep within the 5′ UTR, but the element is able to replace and extend the 5′ UTR sequence by copying sequence from its 3′ UTR, we believe while being reverse transcribed onto the chromosome end. Astonishingly, end-protection in TARTvir and HeT-Amel are essentially identical (using Tags), whereas HeT-Avir is clearly protected from end erosion by an as-yet-unspecified program.
Classification algorithms applied to narrative reports

Narrative text reports represent a significant source of clinical data. However, the information stored in these reports is inaccessible to many automated decision support systems. Data mining techniques can assist in extracting information from narrative data. Multiple classification methods, such as rule generation, decision trees, Bayesian classifiers, and information retrieval were used to classify a set of 200 chest X-ray reports according to 6 clinical conditions indicated. A general-purpose natural language processor was used to convert the narrative text into a coded form that could be used by the classification algorithms. Significant differences in performance were found between algorithms. The best performing algorithm applied to the processor output was significantly better than information retrieval applied to raw text. Predictor variables from the coded processor output were limited to avoid overfitting. Methods that limited by domain knowledge performed significantly better than those that limited by conditional probabilities of the variables in the training set. Algorithms were also shown to be dependent on training set size.
The formation of social capital in newly constructed neighborhoods

ABSTRACT What factors encourage or discourage the formation of social capital and community resilience in neighborhoods geared toward affordable/workforce housing and vulnerable populations? Newly built starter-home neighborhoods—first introduced in the mass-produced Levittowns and commonly called “cookie-cutter”—present a unique opportunity to answer this question. Lessons learned from divergent neighborhood outcomes help us better understand how to build more resilient neighborhoods and avoid constructing neighborhoods “built to fail. ” Including survey data in research introduces people’s experiences and viewpoints, and helps us learn things that can only come from the perspectives of those living in the neighborhoods—for example, why someone chooses to move to a particular neighborhood, what things are liked/disliked about the neighborhood, feelings of safety, and the social dimensions of a neighborhood. These factors are indicators of social capital and in this study, door-to-door surveys of starter-home residents were used to try and understand its formation in newly built neighborhoods and how social capital is associated with resilience. Results show the building in of resources, including providing open spaces, street trees, quality construction practices, and locating neighborhoods near amenities and away from harmful land uses, facilitates the formation of social capital and resilience in newly constructed neighborhoods.
Low-Complexity Ordered Successive Detection for Group Layered Space-Time MIMO System

Group layered space-time can attain a better tradeoff between data rate and diversity gain. For the GLST, in this paper we propose a new generalized detection algorithm that is an ordered successive detection employing an extended Gaussian elimination algorithm. The algorithm can reduce computational complexity, as low as O(Nt2Nr) per symbol interval, by using the characteristics of the channel matrix. Nt and Nr are the number of transmitter and receiver antennas, respectively. Simulation results show that the proposed detector can achieve low-complexity and better performance over linear MMSE ones. In addition, the effect of spatial correlation in GLST systems is discussed from the BER performance