Miracle-dz/UniFAR-FTUs huggingface dataset:
Noise traders, firm-specific uncertainty and technical trading effectiveness

ABSTRACT This is the first study to document evidence of technical trading effectiveness at firm level in the Chinese A-share market by investigating the relationship between excess profits of technical trading rules and firm-specific characteristics. Our results reveal that firms with higher excess profits from technical trading have more noise traders and higher institutional ownership and that those firms tend to be growth firms with lower liquidity and higher firm-specific uncertainty. Further analysis shows that the profitability of technical trading rules is unsustainable and the excess profits of the highest technical trading profit quintile portfolio disappear in the following year.
Enhanced fault ride — Through ability of DFIG-based wind energy system using superconducting fault current limiter

With rapid increase in the use of wind energy as a source of renewable energy, it is necessary to keep wind turbines (WT) connected with the grid during grid faults and other disturbance. Since the disconnection of wind energy system lose a significant share of power grid. To accomplish this issue protective measure should be taken. This paper incorporates superconducting fault current limiter (SFCL) for reducing the DC link voltage and the fault current range at the stator side along with improving the fault ride through (FRT) ability of the doubly fed induction generator (DFIG). Considering the stator current and dc-link voltage, elaborated simulation outputs are derived with and without SFCL. Analysis of the stator currents and dc link voltage is done along with the variation of SFCL resistance. The entire simulation is carried out using MATLAB/Simulink software. The results obtained confirm the effectiveness of SFCL in decreasing the fault current and dc link voltage.
Entrepreneurship in Virtual Economy: the Case of Currency One SA

Abstract Purpose: The scientific purpose of the study is an attempted synthesis of interpretation of “the virtual economy” and “the virtual environment” in the Polish and foreign literature on the subject. The cognitive purpose thereof is to offer an identification and a qualitative analysis of the factors that determine the development of e-entrepreneurship using an example of business practice. Methodology: The theoretical basis of the study is a scientific research of leading scholars on the theory of entrepreneurship in the context of virtual economy. An exploratory, qualitative case study methodology has been applied for the purpose thereof. The research has been conducted using the example of Currency One SA, operating on the currency exchange market in virtual economy. The application of the empirical method of a case study has made it possible to characterize the essence of e-entrepreneurship and present the studied phenomenon in business practice. Findings: Research results reveal an existence of interdependencies between the intellectual potential of staff members and the market success of a company. Explanation of the critical success factors, showing the implementation of innovative ICT solutions and stages of company development, illustrates how the existing theory is experienced by practitioners in virtual economy. Furthermore, the paper confirms the positive impact of e-entrepreneurship on the effectiveness of the company subject to analysis, and presents virtual economy as a completely new sphere through which it is possible to offer new products and services. Research implications: The rationale for conducting research on case studies is the need to orient the practice towards a better understanding of modern economic reality. The study may provide a starting point for empirical quantitative research, as well as act as a contribution to the discussion on entrepreneurship in the rapidly changing virtual economy. Originality: This paper comprises not only a set of notions related to and the concept of e-business models, but also offers new arguments in the discussion on the framework for entrepreneurship in virtual economy. The conducted research is an original attempt to explain the essence of the studied phenomenon and to illustrate its progress in a changing business environment.
Quality counts: new parameters in blood cell counting

Recently several parameters have been introduced to the complete blood count such as nucleated red blood cells, immature granulocytes; immature reticulocyte fraction, immature platelet fraction and red cell fragments as well as new parameters for detection of functional iron deficiency. Leucocyte positional parameters, which may diagnose specific diseases (e.g. differentiate between abnormal lymphocytes in leukaemia and viral conditions and may also detect malarial infection) are now available. At this time they are only used for research; however, generally such parameters later become reportable. One manufacturer’s routine analyser allows measurement of cells by flow cytometry using monoclonal antibodies. Currently, there are no accredited external quality assessment schemes (EQAS) for these parameters. For a number of parameters, on some instruments, there is no internal quality control, which brings into question whether these parameters should be used for clinical decision making. Other more established parameters, such as mean platelet volume, red cell distribution width and the erythrocyte sedimentation rate do not have EQAS available. The UK National EQAS for General Haematology held a workshop earlier this year in 2008 to discuss these parameters. Participants were asked to provide a consensus opinion on which parameters are the most important for inclusion in future haematology EQAS.
Retrospective analysis of 30 severe autoimmune hemolytic anemia patients treated by whole blood exchange transfusion

Autoimmune hemolytic anemia (AIHA) results from the excessive destruction of red blood cells (RBCs). Nowadays, there is no exact treatment for severe AIHA and our current medical therapies do not effectively stop the progression of severe AIHA. Therapeutic plasma exchange (TPE) is used as emergency therapy that is sometimes helpful. Whole blood exchange (WBE) is based on TPE while its replacement liquids are donor RBCs and fresh plasma. We hypothesized that WBE transfusion might be able to control the process of acute hemolysis, avoid the hemolytic crisis, and improve severe hemolytic anemic symptoms rapidly. The objective was to investigate the efficiency of WBE on severe AIHA.
Synchronization analysis in spiking pixel architecture-hardware implementation and mismatch analysis

In this paper, we describe the design of an image sensor based on spiking pixel architecture (SPA). A feedback reference excitation scheme, that is proven useful for image segmentation, is then proposed and simulated. The proposed scheme relies on local interaction between pixels, making it suitable for VLSI implementation. A mismatch analysis is also carried out in an attempt to evaluate the effect of reference voltage on the synchronization ability across the array. The use of bandgap reference voltage is proposed in order to reduce the effect of the reference voltage mismatch on the synchronization ability of neighboring pixels. A test array has been realized in order to test the proposed concepts.
Infertility in Female Rabbits Immunized with Lactate Dehydrogenase X

Immunization of female rabbits with the sperm-specific lactate dehydrogenase (LDH-X) resulted in a highly significant reduction of pregnancies compared to nonimmunized controls. This is the first demonstration of immunosuppression of fertility by a crystalline protein shown to be strictly homogeneous by ultracentrifugation, polyacrylamide gel electrophoresis, immunodiffusion, and micro complement fixation.
A Measurement Analysis of Information Propagation in Online Social Network

In the modeling, monitoring, and control of information dissemination in social network, a fundamental problem concerns how to describe the spreading process during different nodes. A novel information propagation model is proposed to measure the effect by information by using generating function and giant connected component. We present examples of blog networks leads to unusual percolation properties by measuring the effect of information dissemination.
Risk factors for delayed healing of neuropathic diabetic foot ulcers: a pooled analysis.

OBJECTIVE To estimate the effect of various risk factors on the probability that neuropathic diabetic foot ulcers will heal within 20 weeks of care. DESIGN AND SETTING A pooled or meta-analysis of individual patient data from the standard care arms of 5 randomized clinical trials was conducted. We analyzed 586 subjects with diabetes mellitus who had a neuropathic diabetic foot ulcer. All patients received good wound care, debridement, and "off-loading" of the wound. MAIN OUTCOME MEASURE Multivariable logistic regression was used to calculate the magnitude of the association of each risk factor with patients having healed wounds. RESULTS Logistic regression odds ratios (ORs; 95% confidence intervals [95% CIs]) revealed that those patients with a diabetic neuropathic foot ulcer that healed within 20 weeks using standard care were more likely to have a smaller wound (OR = 0.67; 95% CI, 0.55-0.81), a wound that existed for a shorter period (OR = 0.73; 95% CI, 0.61-0.87), and be nonwhite (OR = 0.64; 95% CI, 0.43-0.96) compared with patients whose wounds did not heal within 20 weeks. The patient's age (OR = 0.99; 95% CI, 0.89-1.01), serum level of glycosylated hemoglobin at the start of the study (OR = 1.03; 95% CI, 0.97-1.10), and sex (OR = 1. 02; 95% CI, 0.69-1.50) were unassociated with the probability of wound healing. Substantial heterogeneity was not found among the studies. CONCLUSIONS A standard care regimen for diabetic neuropathic foot ulcers is most likely to be effective for patients who have wounds that are small and of brief duration. This information should help dermatologists decide initially whether to use standard care, to try a new treatment, or to refer the patient to a specialty center.
Consequences of Electroencephalographic-suppressive Doses of Propofol in Conjunction with Deep Hypothermic Circulatory Arrest

Background Some patients who undergo cerebral aneurysm surgery require cardiopulmonary bypass and deep hypothermic circulatory arrest. During bypass, these patients often are given large doses of a supplemental anesthetic agent in the hope that additional cerebral protection will be provided. Pharmacologic brain protection, however, has been associated with undesirable side effects. These side effects were evaluated in patients who received large doses of propofol. Methods Thirteen neurosurgical patients underwent cardiopulmonary bypass and deep hypothermic circulatory arrest to facilitate clip application to a giant or otherwise high-risk cerebral aneurysm. Electroencephalographic burst suppression was established before bypass with an infusion of propofol, and the infusion was continued until the end of surgery. Hemodynamic and echocardiographic measurements were made before and during the prebypass propofol infusion and again after bypass. Emergence time also was determined. Results Prebypass propofol at 243 plus/minus 57 micro gram *symbol* kg sup -1 *symbol* min sup -1 decreased vascular resistance from 34 plus/minus 8 to 27 plus/minus 8 units without changing heart rate, arterial or filling pressures, cardiac index, stroke volume, or ejection fraction. Propofol blood concentration was 8 plus/minus 2 micro gram/ml. Myocardial wall motion appeared hyperdynamic at the end of cardiopulmonary bypass, and all patients were weaned therefrom without inotropic support. After bypass, vascular resistance decreased further, and cardiovascular performance was improved compared to baseline values. Nine of the 13 patients emerged from anesthesia and were able to follow commands at 3.1 plus/minus 1.4 h. Three others had strokes and a fourth had cerebral swelling. Conclusions Propofol infused at a rate sufficient to suppress the electroencephalogram does not depress the heart or excessively prolong emergence from anesthesia after cardiopulmonary bypass and deep hypothermic circulatory arrest.
Output 5 ― Evaluation-Tool

The ERASMUS+ grant program of the European Union under grant no. 2014-1-DE01-KA203-00624 has funded the creation of the resource. Neither the European Commission nor the project's national funding agency DAAD are responsible for the content or liable for any losses or damage resulting of the use of these resources
Cutting Edge: BAFF Regulates CD21/35 and CD23 Expression Independent of Its B Cell Survival Function

Herein we demonstrate that B cell-activating factor of the TNF family (BAFF), a B cell survival factor, also regulates CD21/35 and CD23 expression. BAFF blockade in wild-type mice down-modulates CD21/35 and CD23 on B cells while survival remains intact, and BAFF exposure causes elevated CD21/35 and CD23 expression. Similar down-modulation is observed in bcl-2-transgenic mice treated with a BAFF inhibitor. This is the first evidence that BAFF has a function independent of B cell survival. Reports using CD21/35 and CD23 expression to assess splenic B cell subsets in BAFF-null mice concluded a lack of B cells beyond the immature stage. Since CD21/35 and CD23 are inadequate for delineating B cell subpopulations in BAFF-null mice, we used expression of BAFF-R and several B cell markers to identify more mature splenic B cells in these mice. These data broaden our understanding of BAFF function and correct the view that BAFF-null mice lack mature B cells.
Germline p53 mutations in a cohort with childhood sarcoma: sex differences in cancer risk.

To characterize cancer risk in heterozygous p53 mutation carriers, we analyzed cancer incidence in 56 germline p53 mutation carriers and 3,201 noncarriers from 107 kindreds ascertained through patients with childhood soft-tissue sarcoma who were treated at the University of Texas M. D. Anderson Cancer Center. We systematically followed members in these kindreds for cancer incidence for >20 years and evaluated their p53 gene status. We found seven kindreds with germline p53 mutations that include both missense and truncation mutation types. Kaplan-Meier analysis showed similar cancer risks between 21 missense and 35 truncation p53 mutation carriers (log-rank chi(2)=0.04; P=. 84). We found a significantly higher cancer risk in female carriers than in male carriers (log-rank chi(2)=12.1; P<. 001), a difference not explained by an excess of sex-specific cancer. The calculated standardized incidence ratio (SIR) showed that mutation carriers had a risk for all types of cancer that was much higher than that for the general population (SIR = 41.1; 95% confidence interval [CI] 29.9-55.0) whereas noncarriers had a risk for all types of cancer that was similar to that in the general population (SIR = 0.9; 95% CI 0.8-1.0). The calculated SIRs showed a >100-fold higher risk of sarcoma, female breast cancer, and hematologic malignancies for the p53 mutation carriers and agreed with the findings of an earlier segregation analysis based on the same cohort. These results quantitatively illustrated the spectrum of cancer risk in germline p53 mutation carriers and will provide valuable reference for the evaluation and treatment of patients with cancer.
A hybrid multi-path CMOS magnetic sensor with 76 ppm/°C sensitivity drift

This paper presents a temperature-stable system for wide-bandwidth contactless current sensing. It employs a multipath combination of Hall sensors (low frequencies) and coils (high frequencies) to sense the magnetic field produced by a current-carrying conductor under a chip. To cancel the effect of earth's common-mode field, a differential sensing arrangement is used. This is further exploited to stabilize the Hall sensor's temperature drift with the help of a self-generated AC commonmode field. In a test chip fabricated in a 0.18 μm CMOS process, the stabilization scheme reduces the Hall sensor's sensitivity drift from 22% to 1% from -45°C to 105°C, corresponding to a temperature coefficient of 76 ppm/°C. The complete system has a bandwidth of 3 MHz, which represents a 10x improvement on previous low-drift CMOS magnetic sensors.
Reproducibility of incremental maximal cycle ergometer tests in healthy recreationally active subjects

Testing of the ventilatory threshold (VT) and maximal oxygen uptake (VO2peak) is relevant for the evaluation of a range of training studies, clinical trials and cross‐sectional studies. Due to a possible learning effect, a familiarization test is often performed to increase test reproducibility. However, limited research has investigated this learning effect and reproducibility of maximal exercise testing. The most appropriate ways to determine VT and VO2peak are not clear, and this study evaluated two approaches (V‐slope and a combined method) for the determination of VT and five time‐averaging intervals (60, 30, 15, 10 and 5 s) for the determination of VO2peak to compare test results and reproducibility.
Are Family Firms Really Better? Reexamining “Examining the ‘Family Effect’ on Firm Performance”

As I have thought about why I wrote my article, “Examining the ‘Family Effect’ on Firm Performance” (Dyer, 2006) and its impact on the field of family business, my thoughts turned to how I got interested in studying family firms in the first place. At my career stage, I am more convinced than ever that we can only truly understand the present by understanding the past. My interest in family business began shortly after I entered MIT as a doctoral student in the fall of 1979. The primary reason I chose to go to MIT was to work with Professor Edgar Schein since both he and I had an interest in doing research on organizational culture. As I worked as Ed’s research assistant, I also found myself working with Dick Beckhard as his teaching assistant for his class on consulting. One afternoon I had a lunch with Dick that was to change my life. As we were eating Dick asked the question, “Gibb, what do you know about family businesses? ” I admitted that I did not know much. Dick told me that many of his clients were family business owners and that they were challenging clients to work with. He would attempt to help these clients solve various business problems only to have family conflicts undermine his work. He proposed that we collaborate on a research project on the problems of family businesses and suggested that we invite some of his clients to Boston to listen to their issues and problems. Based on what his clients would tell us, we would then develop our research agenda. (This is a very different approach to doing research than we typically experience in academia where we generate research ideas by interacting with our like-minded academic colleagues rather than formulating research questions by gathering data from, and listening to, those who we purport to study.) After Dick’s clients arrived in Boston in the spring of 1982, I spent 3 days listening to issues and problems that I never encountered in my MBA program, whose training was focused primarily on large, public corporations. In my mind’s eye, I still can see one tall, silver-haired founder of a family business standing during those meetings to express his feelings about succession:
The Tyranny of Distance and the Gravity of Resources

To what extent does geography remain an important determinant of comparative advantage and factor incomes in resource markets? We estimate gravity models for resources and find that some minerals and fuels, particularly iron ore and gas, do have very high elasticities of trade with respect to distance. To assess the implications of this we then consider a simple counterfactual where location advantages are eliminated. We find that for a few countries, including Australia and New Zealand, distance barriers have a large impact of their market share.
A Tale of Two Courses: Exploring Teacher Candidates’ Translation of Science and Special Education Methods Instruction Into Inclusive Science Practices

Early childhood educators teach science to all students, including students with disabilities. Strategies for accommodating students with disabilities in science, including familiarity with equitable frameworks such as Universal Design for Learning (UDL) are therefore a critical aspect of early childhood teacher candidates’ pedagogical content knowledge (PCK). Such strategies are often emphasized in special education courses that are offered separately from science methods courses. This practice assumes that teacher candidates can synthesize and transfer those practices into their science lesson planning. To explore how teacher candidates actually assimilate the instruction on inclusive science that is taught in their preparation coursework, this study examined the early and late semester science lesson plans of 26 early childhood teacher candidates who were concurrently enrolled in science and special education methods courses. Qualitative and discourse analysis illuminated the following key findings: 1) Teacher candidates demonstrate a strong tendency to accommodate students with disabilities by having them rely on others both before and after extensive instruction; 2) Instruction appears to reduce teacher candidates’ accommodating students with disabilities through separate materials/activities/directions; 3) Principles of UDL were more evident in late semester lesson plans; and 4) Late semester lesson plans contained more “behavior oriented” language and concerns. These findings are discussed with particular attention paid to ways in which science and special education teacher educators might intervene at key junctures in teacher candidates’ lesson planning processes to promote student autonomy, science inquiry, and greater use of the continuum of adaptations that are available to them.
Emotion recognition from EEG signals through one electrode device

In recent years, researchers have concentrated on the development of ElectroEncephaloGraphy (EEG) based Brain-Computer Interfaces (BCI) to increase the quality of life using medical applications. BCIs can also be used for marketing, gaming, and entertainment to provide users with a more personalized experience. Both medical and non-medical applications require the ability to interpret the user's multimedia-induced perception and emotional experience. This paper presents a novel method to detect human emotion with a single-channel commercial BCI device. The proposed EEG-based emotion recognition system was tested on human test subjects using a deep learning neural network and an accuracy above 87% was achieved.
On the asymmetric effects of oil price changes on Alaska oil tax revenue

ABSTRACT Alaska depends on oil tax revenue for more than 90% of the state budget. In this article, we apply the nonlinear autoregressive distributed lag (ARDL) approach of to test whether the effect of changes in oil prices on Alaska’s oil reven ues is symmetric or asymmetric. The results show that oil prices have an asymmetric effect on Alaska’s oil revenues in the long run, though not in the short run. Additionally, declines in oil prices have a more substantial long-run effect than increases in oil prices.