Miracle-dz/UniFAR-FTUs huggingface dataset:
Energy and error analysis of IEEE 802.15.4 Zigbee RF transceiver under various fading channels in Wireless Sensor Network

This paper addresses the performance analysis of Zigbee transceiver using IEEE 802.15. 4 standard under 2.4 GHz frequency band in terms of Energy and Error over various fading channel conditions. Energy is a critical aspect in Wireless Sensor Network (WSN) for improved network lifetime. The multipath nature of the wireless sensor network channel imposes adverse effect on the received signal characteristics. These unreliable links increases the error level to a greater extent and hence, degrades battery life. In this paper, we investigate the energy efficiency of a Zigbee transceiver using Direct Sequence Spread Spectrum- Offset Quadrature Phase Shift Keying (DSSS-OQPSK) modulation under 2.4 GHz frequency band in a WSN. The Symbol Error Rate (SER) is computed for a Zigbee transceiver, and an expression for energy efficiency measurement is obtained. Simulation results on SER are obtained for AWGN, Rayleigh and Rician fading channels and used in energy efficiency computation. It is found that the energy efficiency of Zigbee transceivers is as low as 10% for Rayleigh channels, but it is over 90% for AWGN channels, when the received SNR is 10 dB, whereas, for Rician channels, it lies in between Rayleigh and AWGN, depending upon the fading level.
Ontological Queries Supporting Decision Process in KaSeA System

With development of knowledge bases (KB) there appeared expert systems that use KBs to support them in decision making process. Decision Support Systems, that are the subject of the paper, communicate with knowledge bases by populating them with known facts and receiving newly inferred knowledge. However there exist situations when a DSS receives ambiguous response from knowledge base and needs to know what additional information is missing and is required to give a precise response. The paper focuses on a communication between a DSS and a knowledge base especially in the scope of getting the missing information. The special type of inference performed over a Description Logics ontology to solve the problem, the corresponding query and implementation issues are described.
Distance effects in memory for sequences: Evidence for estimation and scanning processes

The current study sought to uncover how temporal information is represented in our knowledge about routine events. In Experiment 1 we collected norming data on eight routines taken from Galambos (1983). In Experiment 2 participants were presented with two actions of varying distance from a routine and asked “Are the actions in the correct order? ”. We found that a number of variables interact with distance, including action position, routine familiarity, and experimental block. These data suggest that sometimes participants are faster when the actions are far apart in the routine, while at other times they are faster when actions are closer together, providing evidence for both distance and reverse-distance effects, respectively. A model is presented to help interpret these data in which temporal information for routine events is both: (1) coarsely coded, and processed by an estimation mechanism; and (2) represented serially, and processed by a scanning mechanism.
Performance Improvement for Frequent Term-based Text Clustering Algorithm

Frequent term-based text clustering [2] is a recently introduced text clustering technique, which uses frequent term sets and dramatically decreases the dimensionality of the document vector space, thus especially addressing itself to the problems of text clustering: very high dimensionality of the date and very large size of the databases [2]. Moreover, frequent term sets provide understandable meanings for clusters. Frequent term-based text clustering algorithm (FTC) has shown significant efficiency comparing to some well-known text clustering methods [2], but the quality of clustering still needs further enhancement. This report points out the problems of the overlap calculations in FTC and introduces polished algorithms that aim at improvements on both the running time and the cluster quality. The performances of FTC before and after improvements are compared on the basis of the experiments on classical text documents as well as on web documents. At last, an evaluation on the clustering procedure may provide a clue for further work. General Terms Algorithms, Performance, Experimentation.
Real-Time Planning of Humanoid Robot's Gait for Force-Controlled Manipulation

This paper proposes a new style of manipulation by a humanoid robot. Focusing on the task of pushing an object, the foot placement is planned in real time according to the result of manipulation of the object. By using the impedance control of the arms, the humanoid robot can stably push the object regardless of the mass of the object. If the object is heavy, the humanoid robot pushes it by walking slowly and vice versa. Also, for planning the gait in real time, we propose a new analytical method where a newly calculated trajectory of the robot motion is smoothly connected to the current one. The effectiveness of the proposed method is confirmed by simulation and experiment
Simultaneous Monitoring of Presynaptic Transmitter Release and Postsynaptic Receptor Trafficking Reveals an Enhancement of Presynaptic Activity in Metabotropic Glutamate Receptor-Mediated Long-Term Depression

Although the contribution of postsynaptic mechanisms to long-term synaptic plasticity has been studied extensively, understanding the contribution of presynaptic modifications to this process lags behind, primarily because of a lack of techniques with which to directly and quantifiably measure neurotransmitter release from synaptic terminals. Here, we developed a method to measure presynaptic activity through the biotinylation of vesicular transporters in vesicles fused with presynaptic membranes during neurotransmitter release. This method allowed us for the first time to selectively quantify the spontaneous or evoked release of glutamate or GABA at their respective synapses. Using this method to investigate presynaptic changes during the expression of group I metabotropic glutamate receptor (mGluR1/5)-mediated long-term depression (LTD) in cultured rat hippocampal neurons, we discovered that this form of LTD was associated with increased presynaptic release of glutamate, despite reduced miniature EPSCs measured with whole-cell recording. Moreover, we found that specific blockade of AMPA receptor (AMPAR) endocytosis with a membrane-permeable GluR2-derived peptide not only prevented the expression of LTD but also eliminated LTD-associated increase in presynaptic release. Thus, our work not only demonstrates that mGluR1/5-mediated LTD is associated with increased endocytosis of postsynaptic AMPARs but also reveals an unexpected homeostatic/compensatory increase in presynaptic release. In addition, this study indicates that biotinylation of vesicular transporters in live cultured neurons is a valuable tool for studying presynaptic function.
Incidental Memory of Younger and Older Adults for Objects Encountered in a Real World Context

Effects of context on the perception of, and incidental memory for, real-world objects have predominantly been investigated in younger individuals, under conditions involving a single static viewpoint. We examined the effects of prior object context and object familiarity on both older and younger adults’ incidental memory for real objects encountered while they traversed a conference room. Recognition memory for context-typical and context-atypical objects was compared with a third group of unfamiliar objects that were not readily named and that had no strongly associated context. Both older and younger adults demonstrated a typicality effect, showing significantly lower 2-alternative-forced-choice recognition of context-typical than context-atypical objects; for these objects, the recognition of older adults either significantly exceeded, or numerically surpassed, that of younger adults. Testing-awareness elevated recognition but did not interact with age or with object type. Older adults showed significantly higher recognition for context-atypical objects than for unfamiliar objects that had no prior strongly associated context. The observation of a typicality effect in both age groups is consistent with preserved semantic schemata processing in aging. The incidental recognition advantage of older over younger adults for the context-typical and context-atypical objects may reflect aging-related differences in goal-related processing, with older adults under comparatively more novel circumstances being more likely to direct their attention to the external environment, or age-related differences in top-down effortful distraction regulation, with older individuals’ attention more readily captured by salient objects in the environment. Older adults’ reduced recognition of unfamiliar objects compared to context-atypical objects may reflect possible age differences in contextually driven expectancy violations. The latter finding underscores the theoretical and methodological value of including a third type of objects–that are comparatively neutral with respect to their contextual associations–to help differentiate between contextual integration effects (for schema-consistent objects) and expectancy violations (for schema-inconsistent objects).
RFI excision in synthesis imaging without a reference signal

The excision of interfering signals is crucial to the continuation of radio astronomical observations into the future. Many algorithms for RFI excision require an estimate of the interference found by observations with a reference system. However, often the best measurements of the interference come from the scientific observations themselves the sensitivity and sampling are guaranteed to be appropriate. This is similar to the logic of self calibration whereby the best way to calibrate the telescope is to use the scientific observations. We develop and test an algorithm in which the interference is estimated by a least squares fit to the observations and removed by simple subtraction. We call this technique "RFI selfpartitioning". Differentiation of interference from signal is dependent on the natural fringe rotation of celestial sources, and the lack of fringe rotation for ground-based interference. Our test is on VIA 333MHz observations of the closely circumpolar radio source NGC6251. The interference source is a radar transmitter at Albuquerque airport, some 200km from the VIA.
A Hybrid Hyperquadric Model for 2-D and 3-D Data Fitting

We present in this paper a new curve and surface implicit model. This implicit model is based on hyperquadrics and allows a local and global control of the shape and a wide variety of allowable shapes. We define a hybrid hyperquadric model by introducing implicitly some local properties on a global shape model. The advantage of our model is that it describes global and local properties through a unique implicit equation, yielding a representation of the shape by means of its parameters, independently of the chosen numerical resolution. The data fitting is obtained through the minimization of energy, modeling the attraction to data independently of the implicit description of the shape. After studying the geometry of hyperquadrics and how the shape deforms when we modify slightly its implicit equation, we are able to define an algorithm for automatic refining of the fit by adding an adequate term to the implicit representation. This geometric approach makes possible an efficient description of the data points and an automatic tuning of the fit according to the desired accuracy.
Numerical modeling of image discriminability for home storage and organization system on a smart device

In Home storage and organization system on a smart device, thumbnail pictures (Tag Image) of daily-use objects are often used. Discriminability of Tag Image is important to realize superior usability. In this paper, we have tried to construct a numerical model of Tag Image's discriminabillity. The proposed model is based on simple linear regression from popular image features and their statistics. In addition, web-based data input system has also been developed to collect training data efficiently. Consequently, the input system has acquired a substantial number of data and a numerical model has been constructed. The constructed model has substantially good but not perfect performance.
Turning points in the transition to parenthood: Variability of father involvement over time

Leseprobe ----- Abstract Although fathers’ involvement in care work has increased, the transition to parenthood still implies a gendered division of labour. In order to gain more knowledge of this ambivalence, we focus on the variability of father involvement at this transition. Based on an Austrian qualitative longitudinal study with couples experiencing the transition to first-time parenthood, we examined how fathers’ affective, cognitive and behavioural involvement varies across the transition process. Changes in fathers’ involvement culminated at particular points in time, conceptualised as turning points. Results show that the transition to fatherhood is characterised by a variety of prepregnancy, prenatal and postnatal turning points at which father involvement undergoes crucial transformations. Father involvement varies not only between fathers, but also within individual transitions. The study indicates that turning points contribute to the dynamics and fluidity of the transition process. Keywords: care work, father involvement, qualitative longitudinal data, transition to parenthood, turning points ----- Wendepunkte am Ubergang zur Elternschaft: Variabilitat vaterlicher Beteiligung Zusammenfassung Obwohl die vaterliche Beteiligung an der Betreuungsarbeit im Steigen begriffen ist, ist der Ubergang zur Elternschaft nach wie vor mit einer geschlechtsspezifischen und ungleichen Arbeitsteilung verbunden. Um diese Ambivalenz zu verstehen, konzentrieren wir uns auf die Variabilitat vaterlicher Beteiligung bei diesem Ubergang. Anhand einer osterreichischen qualitativen Langsschnittstudie mit Paaren, die das erste Mal Eltern werden, wurde untersucht, wie sich die affektive, kognitive und verhaltensmasige Beteiligung in diesem Transitionsprozess verandert. Die Ergebnisse zeigen, dass der Ubergang zur Elternschaft sich durch zahlreiche Wendepunkte (turning points) auszeichnet, an denen vaterliche Beteiligung eine wesentliche Anderung erfahrt. Diese Wendepunkte konnen vor und wahrend der Schwangerschaft sowie nach der Geburt auftreten. Die Beteiligung variiert nicht nur zwischen Vatern, sondern auch innerhalb individueller Ubergange. Wendepunkte implizieren einen Wechsel in der Arbeitsteilung zwischen Muttern und Vatern und tragen zur Dynamik und Fluiditat des Transitionsprozesses bei. Schlagworter: Betreuungsarbeit, qualitative Langsschnittdaten, Ubergang zur Elternschaft, vaterliche Beteiligung, Wendepunkte ----- Bibliographie: Schmidt, Eva-Maria/Rieder, Irene/Zartler, Ulrike/Schadler, Cornelia/Richter, Rudolf: Turning points in the transition to parenthood: Variability of father involvement over time, ZfF, 2-2017, S. 139-155. https://doi.org/10.3224/zff.v29i2. 01
Meta-analysis and the rehabilitation of punishment

Do we know what “works” in the way of rehabilitative treatment in corrections? Not yet. Has the old “nothing works” literature been invalidated by new reviews of research claiming to show, through meta-analysis, that treatment really does work, at least when it is “appropriate? ” Not likely. Would production of this knowledge enhance the ability of prison officials to do their job? Not ever. Their job, and their highest duty, is to administer justice, not treatment. Individualized treatment muddles the message of punishment, making it less principled and not necessarily more humane. A “confinement model” of imprisonment is proposed, which rejects rehabilitation as an official goal and yet allows for programs of work, education, and other activities within the mission of a prison.
Determinants of Item-Level Timing

Response latency information has been used in the past to provide information for consideration along with response accuracy when obtaining trait level estimates, and more recently, to flag unusual response patterns, to establish appropriate time-to-test limits (Reese, 1993), and to determine predictors of the amount of time needed to administer a given item (Gershon, Bergstrom, & Lunz, 1993). Data for this research were obtained from administration of an adaptive college mathematics placement test to 3,364 examinees. This study investigated item and examinee variables as potential influences of item-level response time. The item variables in this study were presentation order in the test, content classification, and cognitive classification. Examinee variables consisted of estimated ability, average rate of response, gender, ethnicity, age. The examinee-item variables were conditional probability and correctness of response. Results were analyzed through a series of regression models to ascertain the variables that function as the strongest determinants of item latency. There are six tables and three figures. (Contains 14 references.) (Author/SLD) *********************************************************************** Reproductions supplied by EDRS are the best that can be made from the original document. *********************************************************************** U.S. DEPARTMENT OF EDUCATION Offce of Educational Rsearch and ImprOviment EDUCATIONAL RESOURCES INFORMATION CENTER (ERIC) 17:14'h"i: document has ben repoduced as reCsinied from the WW1 0( oirdanizatiOn yiurAibl Aieskin eeonpinsting 0 Minor Changes hare boon made to imprOo reproduction Quality "PERMISSION TO REPRODUCE THIS MATERIAL HAS BEEN GRANTED BY Points of vie.ro, ognions Slated in this cloCument do not MitaManly toprmtnt ofircial 0E141 position or policy TO THE EDUCATIONAL REOURCES INFORMATION CENTER (ERIC). " Response Latency: An Investigation into Determinants of Item-Level Timing Cynthia G. Parshall David J. Mittelholtz Timothy R. Miller American College Testing Program Paper presented at tin: Annual Meeting of the National Council on Measurement in Education, April 48, 1994, New Orleans, LA.
Storing UIMA CASes in a relational database

In the UIMA text annotation framework the most common way to store annotated documents (CAS) is by serializing the document to XML and storing this XML in a file in the file system. We present a framework to store CASes as well as their type systems in a relational database. This does not only provide a way to improve document management but also the possibility to access and manipulate selective parts of the annotated documents using the database’s index structures. The approach has been implemented for MSSQL and MySQL databases.
Methylation of discrete regions of the O6-methylguanine DNA methyltransferase (MGMT) CpG island is associated with heterochromatinization of the MGMT transcription start site and silencing of the gene

O6-Methylguanine DNA methyltransferase (MGMT) repairs the mutagenic and cytotoxic O6-alkylguanine lesions produced by environmental carcinogens and the chemotherapeutic nitrosoureas. As such, MGMT-mediated repair of O6-alkylguanine lesions constitutes a major form of resistance to nitrosourea chemotherapy and makes control of MGMT expression of clinical interest. The variability of expression in cell lines and tissues, along with the ease with which the MGMT phenotype reverts under various conditions, suggests that MGMT is under epigenetic control. One such epigenetic mechanism, 5-methylation of cytosines, has been linked to MGMT expression. We have used an isogenic human multiple myeloma tumor cell line model composed of an MGMT-positive parent cell line, RPMI 8226/S, and its MGMT-negative variant, termed 8226/V, to study the control of MGMT expression. The loss of MGMT activity in 8226/V was found to be due to the loss of detectable MGMT gene expression. Bisulfite sequencing of the MGMT CpG island promoter revealed large increases in the levels of CpG methylation within discrete regions of the 8226/V MGMT CpG island compared to those in 8226/S. These changes in CpG methylation are associated with local heterochromatinization of the 8226/V MGMT transcription start site and provide a likely mechanism for the loss of MGMT transcription in 8226/V.
Impact of Diabetes on the Risk Stratification Using Stress Single-Photon Emission Computed Tomography Myocardial Perfusion Imaging in Patients With Symptoms Suggestive of Coronary Artery Disease

Background—Coronary artery disease can develop prematurely and is the leading cause of death among diabetics, making noninvasive risk stratification desirable. Methods and Results—Patients with symptoms of coronary artery disease who were undergoing stress myocardial perfusion imaging (MPI) from 5 centers were prospectively followed (2.5±1.5 years) for the subsequent occurrence of cardiac death, myocardial infarction (MI), and revascularization. Stress MPI results were categorized as normal or abnormal (fixed or ischemic defects and 1, 2, or 3 vessel distribution). Of 4755 patients, 929 (19.5%) were diabetic. Patients with diabetes, despite an increased revascularization rate, had 80 cardiac events (8.6%; 39 deaths and 41 MIs) compared with 172 cardiac events (4.5%; 69 deaths and 103 MIs) in the nondiabetic cohort (P <0.0001). Abnormal stress MPI was an independent predictor of cardiac death and MI in both populations. Diabetics with ischemic defects had an increased number of cardiac events (P <0.001), with the highest MI rates (17.1%) observed with 3-vessel ischemia. Similarly, a multivessel fixed defect was associated with the highest rate of cardiac death (13.6%) among diabetics. The unadjusted cardiac survival rate was lower for diabetic patients (91% versus 97%, P <0.001), but it became comparable once adjusted for the pretest clinical risk and stress MPI results. In multivariable Cox analysis, both ischemic and fixed MPI defects independently predicted cardiac death alone or cardiac death/MI. Diabetic women had the worst outcome for any given extent of myocardial ischemia. Conclusions—In this large cohort of diabetics undergoing stress MPI, the presence and the extent of abnormal stress MPI independently predicted subsequent cardiac events. Using stress MPI in conjunction with clinical information can provide risk stratification of diabetic patients.
The Sisyphus Continuous Integration System

Integration hell is a prime example of software evolution gone out of control. The Sisyphus continuous integration system is designed to prevent this situation in the context of component-based software configuration management. We show how incremental and backtracking techniques are applied to strike a balance between maximal feedback and being up-to-the-minute, and how these techniques enable automation of release and delivery
Landscape of international event-based biosurveillance

Event-based biosurveillance is a scientific discipline in which diverse sources of data, many of which are available from the Internet, are characterized prospectively to provide information on infectious disease events. Biosurveillance complements traditional public health surveillance to provide both early warning of infectious disease events and situational awareness. The Global Health Security Action Group of the Global Health Security Initiative is developing a biosurveillance capability that integrates and leverages component systems from member nations. This work discusses these biosurveillance systems and identifies needed future studies.