Miracle-dz/UniFAR-FTUs huggingface dataset:
Temporal Issues in Information and Communication Technology-Enabled Organizational Change: Evidence From an Enterprise Systems Implementation

In this article we highlight temporal effects in information and communication technology-enabled organizational change. Examples of temporal effects are explored in the context of one organization's efforts to implement an enterprise-wide information system. Temporality is presented as having two aspects, with the first being the well-recognized, linear and measured clock time. The second aspect of time is that which is perceived--often as nonlinear--and socially defined. We find that temporal effects arise both in changes to the structure of work and in differences among groups in how time is perceived. Evidence suggests that both specific characteristics of the implementation and of the enterprise systems' technologies further exacerbate these temporal effects. We conclude with suggestions for how to incorporate a temporally reflective perspective into analysis of technology-enabled organizational change and how a temporal perspective provides insight into both the social and technical aspects of the sociotechnical nature of enterprise systems.
The relationship between the conditional sum of squares and the exact likelihood for autoregressive moving average models

In this note I will study the relationship between the conditional sum of squares (CSS) estimator of moving averages and the maximum likelihood (ML) estimator. I will show that the CSS estimator can be converted into the ML estimator via the use of the EM algorithm. A by-product of the EM algorithm is an expression for the likelihood function and the score. This argument generalizes to autoregressive moving average (ARMA) models.
An ultracytochemical study of the respiratory potency, integrity, and fate of the sea urchin sperm mitochondria during early embryogenesis

Cytochrome oxidase activity via cytochrome c, as demonstrated by the diaminobenzidine procedure, has been employed in this electron microscope cytochemical study to determine the respiratory potency, integrity and fate of the Arbacia sperm mitochondrion at fertilization and during early embryogenesis. The sperm mitochondrion remained intact and was intensely positive for cytochrome oxidase activity both during and after penetration into the egg. The mitochondrion remained highly reactive throughout zygote formation, up to the eight-cell stage. The sperm mitochondrion formed many projections and buds in the cytoplasm of immature oocytes, monospermic and polyspermic eggs, and in blastomeres. At all stages of early embryogenesis, close juxtaposition and structural contact were observed between the highly reactive sperm mitochondrion and the less reactive egg mitochondria. The results suggest that following fertilization the mitochondrion of the sea urchin spermatozoon retains some degree of metabolic autonomy within the ooplasm. The structural integrity of the paternal mitochondrion is maintained along with a functional respiratory enzyme system (cytochrome c-a3). The hypothesis that the fertilizing sperm mitochondrion may have some relevance to sea urchin development is discussed.
The Impact of Upstream Mergers on Retail Gasoline Markets

In recent years, a number of mergers have occurred in the petroleum industry involving upstream firms that are imperfectly integrated into retail markets. In order to empirically evaluate the competitive effects of such mergers, this paper proposes a structural model of supply and demand that reflects divisions between upstream producers and downstream retailers. Neither downstream costs including wholesale prices nor upstream costs are observed. A standard differentiated products oligopoly model of retail competition provides an expression for downstream costs including wholesale prices as the difference between observed prices and downstream mark-ups. The downstream model is combined with a model of upstream competition that relates wholesale prices and upstream costs to upstream mark-ups. The supply model is estimated along with a demand model reflecting downstream product differentiation using data from the Hawaiian islands in the early 1990s.
Utilization of external knowledge for personal name disambiguation

The amount of information on the World Wide Web (WWW) is increasing at an explosive rate, and the role of computer systems in processing such a huge amount of data has become crucial. In this paper, we focus on the name disambiguation problem when searching for people, because information about people is an important part of the web and improvements to personal information may benefit many web citizens. The name ambiguity problem occurs frequently when searching for people, because a name may be shared by several people. In this research, we use external knowledge while solving this problem, so that we can analyze information in web documents more easily. We collect web directories and use the latent Dirichlet allocation method to extract latent topics from web directories. The extracted topics are used to modify the search result documents so that important contexts that help to discriminate people can be recognized more easily. We carried out experiments with real web documents and verified the advantages of our approach over other disambiguation approaches that use the vector space model and named entity recognition methods.
Consideration of Cosmetic Surgery As Part of Women’s Benefit-Provisioning Mate Retention Strategy

Individuals perform mate retention behaviors to minimize the risk of partner infidelity and relationship dissolution. The current study investigates whether consideration of cosmetic surgery can be conceptualized as part of a broader strategy of mate retention for women, but not men. We hypothesized that women’s consideration of cosmetic surgery would be positively associated with performance frequencies of Benefit-Provisioning and Cost-Inflicting mate retention behaviors. We recruited 203 individuals (54% women) in committed heterosexual relationships from Tehran, Iran. Results indicate a positive association between consideration of cosmetic surgery and Benefit-Provisioning mate retention behaviors for women, but not men. There was no association between consideration of cosmetic surgery and Cost-Inflicting mate retention behaviors. Women therefore may consider cosmetic surgery to improve their physical attractiveness as part of a Benefit-Provisioning strategy to retain a long-term mate. We discuss limitations of the study and highlight future directions for research from an evolutionary perspective.
Bimodal System for Emotion Recognition from Facial Expressions and Physiological Signals Using Feature-Level Fusion

This paper presents an automatic approach for emotion recognition from a bimodal system based on facial expressions and physiological signals. The information fusion is to combine information from both modalities. We tested two approaches, one based on mutual information which allows the selection of relevant information, the second approach is based on principal component analysis that allows the transformation of data into another space. The obtained results using both modalities are better compared to the separate use of each modality.
MIMO for airborne communications [Industry Perspectives]

MIMO technology has been widely applied in terrestrial wireless communications due to its high spectral efficiency in the presence of rich multi-paths. The benefits of MIMO in airborne communications, however, have not been fully recognized. The lack of scattering in the airborne environment may lead one to incorrectly believe that the spectral efficiency gain of an airborne MIMO is rather limited. In this article, we describe how spatial multiplexing gain can be obtained in airborne environments by antenna system design rather than natural scattering. In particular, we will focus on two techniques: the use of dual polarized antennas and the choice of antenna separation relative to the carrier wavelength. We present both field test results and computer simulations demonstrating the benefits of MIMO in airborne environments.
The Seville Anti-Bullying in School Project

This article describes the current problem of bullying in schools in Andalucia (southern Spain) and goes on to examine some possible responses being developed at the University of Seville to meet the challenge of school-based aggression. The project goes under the collective rubric of “SAVE”—The Seville Anti-Bullying in School Project. The SAVE project combines an investigative research initiative with a preventive action programme aimed at reducing the problems of violence in primary and secondary schools. This takes a whole-school approach (similar to that used in the Sheffield Anti-Bullying Project in the U.K.) And involves coordinated action against bullying across 13 schools situated in socially deprived areas in Seville. The problem is approached through the school curriculum and places particular emphasis on children who are considered to have special needs in this area. Aggr. Behav. 26:113–123, 2000. © 2000 Wiley-Liss, Inc.
Gifted Dropouts: The Who and the Why

Two studies were conducted to obtain comprehensive information about ifted high school dropouts and to examine factors that are related to their dropout behavior using the Dropout and Student questionnaires of the National Education Longitudinal Study of 1988 (NELS:88). The results indicated that mwny gifted dropouts were from low socioeconomic-status families and racial minority groups; had parents with low levels of education; and participated less in extracurricular activities. Also, reasons for gifted male dropouts were More related to econornic issues, while reasons for gifted teniale dropouts were more related to personal issues, although both males and femiales were likely to offer school-related reasons. The logistic regression analysis results indicated that dropout behavior for gifted students was significantly related to students' educational aspirations. pregnancy or child-rearing, gender, father's highest level of education, and mother's highest level of education.
A 220-mV input, 8.6 step-up voltage conversion ratio, 10.45-μW output power, fully integrated switched-capacitor converter for energy harvesting

This paper presents a fully integrated step-up switched-capacitor DC-DC converter for energy harvesting applications. The proposed solution exhibits both a high voltage-conversion ratio and a high power-conversion efficiency from a low-voltage source such as a thermoelectric generator or an indoor solar cell. The circuit has been implemented in TSMC 55nm CMOS process. Measurements demonstrate that it can properly operate with a 220 mV input, providing a 1.9 V output voltage at 10.45 μW output power, with 37.4% power conversion efficiency. We demonstrate that it can be used as a power supply for a Bluetooth Low Energy beacon with a thermoelectric generator subjected to a temperature difference of only 3.5°C.
A wireless traffic probe for radio resource management and QoS provisioning in IEEE 802.11 WLANs

The emergence of real-time services such as voice over IP (VoIP) and video streaming, imposes stringent requirements on the performance of a network if quality of service (QoS) targets are to be achieved. In the case of wireless networks, some form of radio resource management (RRM) is typically required to allocate the available resources among the contending stations in accordance with their needs and respective priorities. A critical aspect of any RRM scheme is the ability to monitor resource usage and to determine the resource requirements on a per-station basis. In this paper we describe a wireless traffic probe for IEEE 802.11 WLANs capable of obtaining this information and presenting it in a compact and intuitive format. The probe also shows how the wireless stations interact with one another in competing for the resources of the WLAN in a clear and quantifiable way. The results from the WLAN traffic probe obtained in a series of video streaming test scenarios are also presented that clearly demonstrate its usefulness and importance as a network tool in RRM and QoS provisioning schemes.
Catastrophizing, locus of control, pain, and disability in chinese chronic low back pain patients

Abstract The present study examined the associations of locus of control (LOC) and catastrophizing with pain intensity and disability in Chinese chronic low back pain (CLBP) patients. In the study, 56 respondents (21 men and 35 women) with a mean age of 36.98 years (SD= 12.22) completed measures assessing locus of control, catastrophizing tendency, pain intensity, disability, and psychological distress. Results showed that after partialling out the effects of gender, duration of pain, and psychological distress, internal LOC significantly explained the variance of disability. For pain intensity, only catastrophizing accounted for a large portion of the variance. Limitations of the study and suggestions for future work were discussed.
Arterial oxygenation, central motor output and exercise performance in humans

The studies of Amann et al. (2006, 2007) conclude that feedback from fatiguing skeletal muscle during exercise at different reduces central motor output to the working muscles “in order to reinvent excessive development of peripheral muscle fatigue beyond a critical threshold or sensory tolerance limit” (Amann et al. 2006, p. 950). We suggest that their findings can be better explained by hypoxia-induced changes in central motor output acting in an anticipatory manner.
Forecasting Inflation and Output: Comparing Data-Rich Models With Simple Rules

Decision makers, both public and private, use forecasts of economic growth and inflation to make plans and implement policies. In many situations, reasonably good forecasts can be made with simple rules of thumb that are extrapolations of a single data series. In principle, information about other economic indicators should be useful in forecasting a particular series like inflation or output. Including too many variables makes a model unwieldy and not including enough can increase forecast error. A key problem is deciding which other series to include. Recently, studies have shown that Dynamic Factor Models (DFMs) may provide a general solution to this problem. The key is that these models use a large data set to extract a few common factors (thus, the term #data-rich*). This paper uses a monthly DFM model to forecast inflation and output growth at horizons of 3, 12 and 24 months ahead. These forecasts are then compared to simple forecasting rules.
Two-phase minislot scheduling algorithm for HFC QoS services provisioning

Data-over-cable service interface specifications v1.1 (DOCSIS v1.1) defines five upstream services for supporting per-flow quality of service (QoS). The cable modem termination system (CMTS) must periodically grant upstream transmission opportunities to the QoS flows based on their QoS parameters. This study proposes a two-phase minislot scheduling algorithm to reduce the QoS violation rate. In the scheduling sequence determination phase, the flow whose packets are most unlikely to violate QoS is scheduled first. In the minislot assignment phase, the scheduler allocates to a flow the available interval where the likelihood of packet violation is minimum. Simulation results demonstrate that our scheduling algorithm can reduce the QoS violation rate by 80% - 35% over that of the first-come-first-serve-random-selection algorithm and increase the utilization by 25% as well.
FOCUS: MASS SPECTROMETRY AS A PROBE OF HIGHER ORDER PROTEIN STRUCTURE: RESEARCH ARTICLE Structural Characterization of Missense Mutations Using High Resolution Mass Spectrometry: A Case Study of the Parkinson's-Related Protein, DJ-1

Missense mutations that lead to the expression of mutant proteins carrying single amino acid substitutions are the cause of numerous diseases. Unlike gene lesions, insertions, deletions, nonsense mutations, or modified RNA splicing, which affect the length of a polypeptide, or determine whether a polypeptide is translated at all,missensemutationsexert moresubtleeffectsonproteinstructure,whichareoften difficult to evaluate. Here, we took advantage of the spectral resolution afforded by the EMR Orbitrap platform, togeneratea mass spectrometry-basedapproach relying on simultaneous measurements of the wild-type protein and the missense variants. This approach not only considerably shortens the analysis time due tothe concurrent acquisition but, more importantly, enables direct comparisons between the wild-type protein and the variants, allowing identification of even subtle structural changes. We demonstrate our approach using the Parkinson's-associated protein, DJ-1. Together with the wild-type protein, we examined two missense mutants, DJ-1A104T and DJ-1D149A, which lead to early-onset familial Parkinson's disease. Gas-phase, thermal, and chemical stability assays indicate clear alterations in the conformational stability of the two mutants: the structural stability of DJ-1D149A is reduced, whereas that of DJ-1A104T is enhanced. Overall, we anticipate that the methodology presented here will be applicable to numerous other missense mutants, promoting the structural investigations of multiple variants of the same protein.
Occupational Rank and Grade of Residence in a Metropolis

Of two common explanations of the general correspondence between occupational rank and grade of residence appearing in studies of American cities, one is in terms of the resources that occupations provide, the other of the implied styles of life. Analysis of survey data from one metropolitan county on the effects of these two groups of factors, as represented by income and education, on occupational differences in grade of housing shows that both affect grade of residence; that income is somewhat less influential than education; and that blue-collar and white-collar occupations differ significantly in these respects.
A multivariate technique for multiply imputing missing values using a sequence of regression models

This article describes and evaluates a procedure for imputing missing values for a relatively complex data structure when the data are missing at random. The imputations are obtained by fitting a sequence of regression models and drawing values from the corresponding predictive distributions. The types of regression models used are linear, logistic, Poisson, generalized logit or a mixture of these depending on the type of variable being imputed. Two additional common features in the imputation process are incorporated: restriction to a relevant subpopulation for some variables and logical bounds or constraints for the imputed values. The restrictions involve subsetting the sample individuals that satisfy certain criteria while fitting the regression models. The bounds involve drawing values from a truncated predictive distribution. The development of this method was partly motivated by the analysis of two data sets which are used as illustrations. The sequential regression procedure is applied to perform multiple imputation analysis for the two applied problems. The sampling properties of inferences from multiply imputed data sets created using the sequential regression method are evaluated through simulated data sets.
Response to Comment on “Trafficking of Antigen-Specific CD8+ T Lymphocytes to Mucosal Surfaces following Intramuscular Vaccination”

A critical goal of vaccine development for a wide variety of pathogens is the induction of potent and durable mucosal immunity. However, it has been assumed that this goal would be difficult to achieve by systemic vaccination due to the anatomic and functional distinctness of the systemic and mucosal immune systems and the resultant compartmentalization of immune responses. In this study, we show that Ag-specific CD8(+) T lymphocytes traffic efficiently to mucosal surfaces following systemic vaccination. Intramuscular immunization with recombinant adenovirus (rAd) vector-based vaccines expressing SIV Gag resulted in potent, durable, and functional CD8(+) T lymphocyte responses at multiple mucosal effector sites in both mice and rhesus monkeys. In adoptive transfer studies in mice, vaccine-elicited systemic CD8(+) T lymphocytes exhibited phenotypic plasticity, up-regulated mucosal homing integrins and chemokine receptors, and trafficked rapidly to mucosal surfaces. Moreover, the migration of systemic CD8(+) T lymphocytes to mucosal compartments accounted for the vast majority of Ag-specific mucosal CD8(+) T lymphocytes induced by systemic vaccination. Thus, i.m. vaccination can overcome immune compartmentalization and generate robust mucosal CD8(+) T lymphocyte memory. These data demonstrate that the systemic and mucosal immune systems are highly coordinated following vaccination.
Situational and Patterned Behavior Description Interviews: A Comparison of Their Validity, Correlates, and Perceived Fairness

This study compared the situational interview (SI) and patterned behavior description interview (PBDI) in terms of their ability to predict performance and fairness perceptions, their relationship with cognitive ability and experience, and the impact of advance knowledge of interview questions on interview performance. 120 participants received either an SI or PBDI as part of the application process for a fictitious academic program. The SI and PBDI predicted performance equally well r = . 37, r = . 36, respectively) and were perceived as equally fair. However, the SI was only related to cognitive ability, whereas the PBDI was only related to experience. Both interview formats explained variance in performance beyond experience and ability. Individuals with advance knowledge of the questions perceived the interview as being more fair, regardless of interview type. Although advance knowledge was associated with higher interview performance, it did not alter the concurrent validity of either interview type.