Miracle-dz/UniFAR-FTUs huggingface dataset:
In the shadow of the coal breaker: cultural extraction and participatory communication in the Anthracite Mining Region

ABSTRACT What stories do ruins tell? What is the legacy of the extractive coal industry? When is extraction complete in a single-industry area? Tied to global capital, fuelling the Industrial Revolution on the labour immigrants, the legacy of extraction in the Anthracite Coal-Mining Region in Northeastern Pennsylvania extends into local notions of heritage, memory, community welfare, and place. Tracking (de)industrial life scenes in the Anthracite Coal-Mining Region, this ethnographic work follows traces of the past as they emerge and the day-to-day practices that sustained them noting intensities and flashpoints as they arise in daily life. As a particular flashpoint, Coal Region residents processed the demolition of the ruins of Saint Nicholas Coal Breaker, the last anthracite coal breaker built before 1960 and once the largest coal breaker in the world. Residents rapidly produced and shared digital media of the Breaker with and through a large public digital humanities collaboratory that I created and maintain through an active Facebook page (https://www.facebook.com/AnthraciteCoalRegion) of more than 8000 members and a corresponding website. Engaging in community dialogue, participatory communication, and offering critical interpretations, residents wrote accounts about the demolition of the Breaker including its historical and mnemonic relevance, the cultural politics surrounding it, and the ethical dimensions of its extraction from the landscape by a mining company engaged in strip-mining on the surrounding land. These connections and dislocations between situated pasts show affective intensities arising suddenly even though dominant or more official narratives may have overwhelmed them. The sanitizing of the landscape of Saint Nicholas Breaker tries to empty the physical place of the material cultural traces of mining people/mined people to re-extract more coal through strip-mining operations, thereby rendering superfluous the underground miners’ labour by removing the last sign of it - the Breaker - from the landscape.
Semantics and Model Driven Design Patterns Instantiation

This paper is focused on the method of the design pat- terns support which is based on a principle of suggestion of design pattern instances via the semantic marking of model elements or source code fragments and the sub- sequent transformations of this way marking models or source code. The transformations generate the missing structure of the suggested design pattern instances in a requested form. The method provides the support of de- sign patterns at three levels of abstraction and in this way it enables earlier application of the design patterns into the models and it provides more abstract view on the pat- tern instances. The emphasis is put also on the support of specialization, concretization and variability of design patterns. The method defines transformations between the supported model levels and the source code. Within the transformations the emphasis is put on the preserv- ing of visibility of pattern instances and on the preserving of the pattern support also at the lower abstraction lev- els till the source code. Moreover, the transformations are driven by models of patterns and they are designed in the way which provides great adaptability of the transfor- mations results and easy extension of the support about new patterns or custom model structures. Thanks to the continual support of the design patterns at more levels of abstraction and thanks to the transformations between particular model levels and source code, the method tries to achieve the applicability in the area of the iterative, incremental and model driven development. Categories and Subject Descriptors
Safe spaces in online places: social media and LGBTQ youth

Abstract This study responds to a need for research in a fast-growing and significant area of study, that of exploring, understanding and documenting the numerous ways that multiply marginalized LGBTQ youth use social media as part of their everyday experiences in an attempt to safely navigate their lives through learning, participating, engaging, communicating and constructing identities in digital spaces. The research question examined whether digital spaces, such as Facebook, provide safe spaces for multiply minoritized LGBTQ youth to express and explore issues of sexuality and gender. In addition, the study explores and categorizes multiple ways that participants interact with social media. Findings suggest that social media are an important aspect in most participants’ lives. Participants’ accessibility to social media, frequency of activity within Facebook, use of social media as a connection and exploration strategy, levels of commitment to social media and perceptions of comfort online are described. Analyses suggest that social media have become a safe space for multiply minoritized LGBTQ youth to explore issues of sexuality and gender. Because previous studies of this kind focused around this population do not exist, this study provides a baseline for continued research in the intersection of Queer studies, multicultural education and digital spaces.
State estimation for distributed parameter systems under intermittent observations

We consider the problem of estimating the state of a Distributed Parameter System, using discrete-time measurements taken by a set of wireless sensors. A few problems have to be faced in this context: first, wireless communication channels are lossy, therefore the reconstructor of the state could not receive the measurements; furthermore, wireless sensors are powered the batteries, hence it is crucial to use them as little as possible, to preserve their lifetime. Finally, the communication channel usually has little bandwidth, so as little as possible sensors must be used at any time. We present a selection sensors policy that aims to cope with the above issues, and we show, by numerical simulations, that the filter using the proposed sensor querying policy is able to find the best sensor (or a close sub-optimal one) or the best scanning sequence with a little computational effort.
Reliability of the channel estimation for the wireless communication systems

Mobile networks have experienced an unexpected penetration and continue to impress with their extensions and applications. Better yet, a growing demand there is for new services that require high speed and require a good quality of the connection. namely that the flow rate will be improved by the operation of a number of antenna both in transmission and reception, and that we will improve the quality of the bond by the use of space-time coding block (STBC) [1]. Through the literature [2], [3], several propagation channel models were developed at the end of designing a communication system according to the environment of propagation of the signal and the standard adopted by such entity. These models are characterized by the power - delay profile (PDP) that describes a well-defined environment. Through the PDP, we create a channel at some length characterized by complex coefficients in a chosen distribution. The problem in the communication system is how to get the channel coefficients at the end to extract the data sent. In this work, we will see the impact of the channel length, the pilot arrangement and the number of antennas on the error of the estimation and later on system performance.
Matrix model eigenvalue integrals and twist fields in the su(2)-WZW model

We propose a formula for the eigenvalue integral of the hermitian one matrix model with infinite well potential in terms of dressed twist fields of the su(2) level one WZW model. The expression holds for arbitrary matrix size n, and provides a suggestive interpretation for the monodromy properties of the matrix model correlators at finite n, as well as in the 1/n-expansion.
Analysis of a User-space Device-driver for the memcpy Hardware

In this paper, we analyze the utilization of a previously presented memcpy hardware when accessed through a user-space device-driver in a computer system. As the memcpy hardware only performs the actual data movement when it has less impact on the system, it is faster and does not incur on cache pollution. We also present the details of the chosen implementation and the results of executing two benchmarks suites, LMbench and STREAM. We demonstrate that the memcpy hardware can reach up to 121 times average execution time speedup for copies of 32kB when utilizing a 32kB cache. We analyze the impact of changing the processor frequency, the memory latency and the cache-line size and we concluded that our device is access bounded and not copy size bounded.
THE INVERSE SPECTRAL THEORY FOR THE WARD EQUATION AND FOR THE 2 + 1 CHIRAL MODEL 1

We solve the Cauchy problem of the Ward model in light-cone coordinates using the inverse spectral (scattering) method. In particular we show that the solution can be constructed by solving a 2 × 2 local matrix Riemann-Hilbert problem which is uniquely defined in terms of the initial data. These results are also directly applicable to the 2 + 1 Chiral model. AMS (MOS) Subject Classification 35Q15, 35Q51
Social support and physical activity participation among healthy adults: a systematic review of prospective studies

ABSTRACT The objective of this review was to determine the direction and strength of the prospective relationship between social support and PA among healthy adults. A systematic review was conducted; including studies up until December 2015, in the following databases: Ovid MEDLINE, EMBASE, PsychINFO, SPORTDiscus, and Scopus. Published English and French written studies were included if the reported study used a longitudinal design; examined the relationship between social support and PA over at least two intervals; and assessed a sample of healthy adults between 18–65 years of age. Two reviewers independently extracted study information and independently assessed the risk of bias in each study. The initial search yielded a total of 2892 citations, and 20 studies were included in the review. Follow-up period ranged from 2 weeks to 10 years. Irrespective of the type and source of support, the strength and direction of the association between social support and PA was inconsistent across studies, with effect sizes ranging from small to large and from negative to positive. Based on meta-analysis, there was a small positive association between support for PA from friends and future PA. Researchers are encouraged to continue to conduct longitudinal studies to better understand the relationship between social support and PA.
Statistical Analysis on Detecting Recombination Sites in DNA-β Satellites Associated with Old World Geminiviruses

Although exchange of genetic information by recombination plays an important role in the evolution of viruses, it is not clear how it generates diversity. Understanding recombination events helps with the study of the evolution of new virus strains or new viruses. Geminiviruses are plant viruses which have ambisense single-stranded circular DNA genomes and are one of the most economically important plant viruses in agricultural production. Small circular single-stranded DNA satellites, termed DNA-β, have recently been found to be associated with some geminivirus infections. In this paper we analyze several DNA-β sequences of geminiviruses for recombination events using phylogenetic and statistical analysis and we find that one strain from ToLCMaB has a recombination pattern and is a recombinant molecule between two strains from two species, PaLCuB-[IN:Chi:05] (major parent) and ToLCB-[IN:CP:04] (minor parent). We propose that this recombination event contributed to the evolution of the strain of ToLCMaB in South India. The Hidden Markov Chain (HMM) method developed by Webb et al. (2009) estimating phylogenetic tree through out the whole alignment provide us a recombination history of these DNA-β strains. It is the first time that this statistic method has been used on DNA-β recombination study and give a clear recombination history of DNA-β recombination.
Inverting Wireless Collision Avoidance Technical Report SING-0900

We describe grant-to-send, a novel collision avoidance algorithm for wireless mesh networks. Rather than announce packets it intends to send, a node using grant-to-send announces packets it expects to hear others send. We present evidence that inverting collision avoidance in this way greatly improves wireless mesh performance. Evaluating four protocols from 802.11 meshes and 802.15. 4 sensor networks, we find that grant-to-send matches or outperforms CSMA and RTS/CTS in all cases. For example, in a 4-hop UDP flow, grant-to-send can achieve 96% of the theoretical maximum throughput while maintaining a 99.9% packet delivery ratio. We also find that grant-to-send is general enough to replace protocol-specific collision avoidance mechanisms common to sensor network protocols. Grant-to-send is simple. Incorporating it into 802.11 requires only 11 lines of driver code and no hardware changes. Furthermore, as it reuses existing 802.11 mechanisms, grantto-send interoperates with current networks and can be incrementally deployed.
COMPREHENSIVE TWO-POINT ANALYSES OF WEAK GRAVITATIONAL LENSING SURVEYS

We present a framework for analyzing weak gravitational lensing survey data, including lensing and source-density observables, plus spectroscopic redshift calibration data. All two-point observables are predicted in terms of parameters of a perturbed Robertson–Walker metric, making the framework independent of the models for gravity, dark energy, or galaxy properties. For Gaussian fluctuations, the two-point model determines the survey likelihood function and allows Fisher matrix forecasting. The framework includes nuisance terms for the major systematic errors: shear measurement errors, magnification bias and redshift calibration errors, intrinsic galaxy alignments, and inaccurate theoretical predictions. We propose flexible parameterizations of the many nuisance parameters related to galaxy bias and intrinsic alignment. For the first time, we can integrate many different observables and systematic errors into a single analysis. As a first application of this framework, we demonstrate that: uncertainties in power-spectrum theory cause very minor degradation to cosmological information content; nearly all useful information (excepting baryon oscillations) is extracted with ≈3 bins per decade of angular scale; and the rate at which galaxy bias varies with redshift, substantially influences the strength of cosmological inference. The framework will permit careful study of the interplay between numerous observables, systematic errors, and spectroscopic calibration data for large weak lensing surveys.
Impacts of Autophagy-Inducing Ingredient of Areca Nut on Tumor Cells

Areca nut (AN) is a popular carcinogen used by about 0.6-1.2 billion people worldwide. Although AN contains apoptosis-inducing ingredients, we previously demonstrated that both AN extract (ANE) and its 30-100 kDa fraction (ANE 30-100K) predominantly induce autophagic cell death in both normal and malignant cells. In this study, we further explored the action mechanism of ANE 30-100K-induced autophagy (AIA) in Jurkat T lymphocytes and carcinoma cell lines including OECM-1 (mouth), CE81T/VGH (esophagus), SCC25 (tongue), and SCC-15 (tongue). The results showed that chemical- and small hairpin RNA (shRNA)-mediated inhibition of AMP-activated protein kinase (AMPK) resulted in the attenuation of AIA in Jurkat T but not in OECM-1 cells. Knockdown of Atg5 and Beclin 1 expressions ameliorated AIA in OECM-1/CE81T/VGH/Jurkat T and OECM-1/SCC25/SCC-15, respectively. Furthermore, ANE 30-100K could activate caspase-3 after inhibition of Beclin 1 expression in OECM-1/SCC25/SCC15 cells. Meanwhile, AMPK was demonstrated to be the upstream activator of the extracellular-regulated kinase (ERK) in Jurkat T cells, and inhibition of MEK attenuated AIA in Jurkat T/OECM-1/CE81T/VGH cells. Finally, we also found that multiple myeloma RPMI8226, lymphoma U937, and SCC15 cells survived from long-term non-cytotoxic ANE 30-100K treatment exhibited stronger resistance against serum deprivation through upregulated autophagy. Collectively, our studies indicate that Beclin-1 and Atg5 but not AMPK are commonly required for AIA, and MEK/ERK pathway is involved in AIA. Meanwhile, it is also suggested that long-term AN usage might increase the resistance of survived tumor cells against serum-limited conditions.
Robust controller design for a series resonant converter

Because of their reduced switching losses, allowing a higher operating frequency, dc-to-dc resonant converters have been used extensively in the design of smaller size and lighter weight power supplies. The steady state and dynamic behavior of both the conventional series and parallel resonant converters have been thoroughly analyzed and small-signal models around given nominal operating points have been obtained. These models have been used in the past to design controllers that attempted to keep the output voltage constant in the presence of input perturbations. However, these controllers did not take into account either load or components variations, and this could lead to instability in the face of component or load changes. Moreover, prediction of the frequency range for stability was done a posteriori, either experimentally or by a trial and error approach In this paper we use /spl mu/-synthesis to design a robust controller for a series resonant converter (SRC). In addition to robust stability the design objectives include rejection of disturbances at the converter input while keeping the control input and the settling time within values compatible with a practical implementation.
WideTable: An Accelerator for Analytical Data Processing

This paper presents a technique called WideTable that aims to improve the speed of analytical data processing systems. A WideTable is built by denormalizing the database, and then converting complex queries into simple scans on the underlying (wide) table. To avoid the pitfalls associated with denormalization, e.g. space overheads, WideTable uses a combination of techniques including dictionary encoding and columnar storage. When denormalizing the data, WideTable uses outer joins to ensure that queries on tables in the schema graph, which are now nested as embedded tables in the WideTable, are processed correctly. Then, using a packed code scan technique, even complex queries on the original database can be answered by using simple scans on the WideTable(s). We experimentally evaluate our methods in a main memory setting using the queries in TPC-H, and demonstrate the effectiveness of our methods, both in terms of raw query performance and scalability when running on many-core machines.
Low Computational Algorithm for Space Time Coded System with LDPC codes

In wireless communication, it requires a high speed transmission with various services and a high reliability. To satisfy these needs, the LDPC code and STC technologies are actively researched. Concatenating LDPC codes to the transmit diversity achieves the coding gain from the concatenated LDPC codes and the diversity gain from the transmit diversity. In this paper, to feed the soft values to LDPC decoder from multiple transmitter and receiver antennas, we propose on effective algorithm for calculation of soft values from multiple receiver antennas based on LLR. We show that maximum 60% of computational complexity is reduced with a little loss of performance.
The Core Components of Organelle Biogenesis and Membrane Transport in the Hydrogenosomes of Trichomonas vaginalis

Trichomonas vaginalis is a parasitic protist of the Excavata group. It contains an anaerobic form of mitochondria called hydrogenosomes, which produce hydrogen and ATP; the majority of mitochondrial pathways and the organellar genome were lost during the mitochondrion-to-hydrogenosome transition. Consequently, all hydrogenosomal proteins are encoded in the nucleus and imported into the organelles. However, little is known about the membrane machineries required for biogenesis of the organelle and metabolite exchange. Using a combination of mass spectrometry, immunofluorescence microscopy, in vitro import assays and reverse genetics, we characterized the membrane proteins of the hydrogenosome. We identified components of the outer membrane (TOM) and inner membrane (TIM) protein translocases include multiple paralogs of the core Tom40-type porins and Tim17/22/23 channel proteins, respectively, and uniquely modified small Tim chaperones. The inner membrane proteins TvTim17/22/23-1 and Pam18 were shown to possess conserved information for targeting to mitochondrial inner membranes, but too divergent in sequence to support the growth of yeast strains lacking Tim17, Tim22, Tim23 or Pam18. Full complementation was seen only when the J-domain of hydrogenosomal Pam18 was fused with N-terminal region and transmembrane segment of the yeast homolog. Candidates for metabolite exchange across the outer membrane were identified including multiple isoforms of the β-barrel proteins, Hmp35 and Hmp36; inner membrane MCF-type metabolite carriers were limited to five homologs of the ATP/ADP carrier, Hmp31. Lastly, hydrogenosomes possess a pathway for the assembly of C-tail-anchored proteins into their outer membrane with several new tail-anchored proteins being identified. These results show that hydrogenosomes and mitochondria share common core membrane components required for protein import and metabolite exchange; however, they also reveal remarkable differences that reflect the functional adaptation of hydrogenosomes to anaerobic conditions and the peculiar evolutionary history of the Excavata group.
Seeking the single thread: The conceptual quest

This chapter focuses on how research works as a process of interpretive enquiry. It argues that research is necessarily a heuristic endeavour the outcomes of which cannot be pre-specified. When we ask open questions, we cannot presume to know the answers. The practice of interpretive enquiry requires patience, a waiting mind, a kind of stillness: dispositions that are difficult to acquire. We outline this line of argument in the opening section. The central section is concerned with a specific case: how do we begin to frame questions regarding the experience of students of Chinese origin in an English university that has its own complicated history of institutional development. We build this chapter around that central story of intellectual discovery and conceptualisation. The final section – attempting to weave the various strands into a single thread – returns to the indeterminacy of enquiry. What, under such epistemological circumstances, constitutes a beginning?