Miracle-dz/UniFAR-FTUs huggingface dataset:
Dynamic modeling of doubly fed induction generator wind turbines

It is now recognized that many large wind farms will employ doubly fed induction generator (DFIG) variable speed wind turbines. A number of such wind farms are already in operation and more are planned or under construction. With the rising penetration of wind power into electricity networks, increasingly comprehensive studies are required to identify the interaction between the wind farm(s) and the power system. These require accurate models of doubly fed induction generator wind turbines and their associated control and protection circuits. A dynamic model has been derived, which can be used to simulate the DFIG wind turbine using a single-cage and double-cage representation of the generator rotor, as well as a representation of its control and protection circuits. The model is suitable for use in transient stability programs that can be used to investigate large power systems. The behavior of a wind farm and the network under various system disturbances was studied using this dynamic model. The influence of the DFIG control on the stability of the wind farm was also investigated by considering different control gains and by applying network voltage control through both stator side and rotor side converters.
Potential support vector machines and Self-Organizing Maps for phytoplankton discrimination

Fluorescence spectroscopy is a powerful technique usually used to evaluate phytoplankton marine environments. In this study, a kernel method (Potential Support Vector Machine, P-SVM) is presented, evaluating its capability to achieve phytoplankton classification from its fluorescence spectra. Different phytoplankton species were studied, and their fluorescence spectra were acquired in laboratory. In a previous study working with Self-Organizing Maps (SOM), it was proved with experimental data from laboratory that excitation spectra were more discriminative than emission spectra. It was also shown that using some preprocessing techniques, such as derivative analysis, the classification performance from emission fluorescence data can be improved. The classification results were encouraging to keep working with emission fluorescence, and herein we present a comparison between P-SVM and SOM for this goal.
Assessing the Impact of Meta-Cognitive Training on Students' Understanding of Introductory Programming Concepts

Students' difficulties in learning computer programming are well documented in the literature and have been studied from different perspectives by the researchers. However, studies that have been conducted from the meta-cognition perspective are rare in the context of programming education. The current study aimed to (i) investigate the effects of a specific metacognitive training on students' programming achievement, retention of programming knowledge, and meta-cognitive awareness; and (ii) explore students' experiences and opinions related to the meta-cognitive training. There were 51 participants (28 male and 23 female) who are 2nd-year students from a public university. In the current study, a mixed methods design, specifically embedded experimental model, was utilized. The experimental group was instructed using the meta-cognitive training, and the control group was taught using traditional instruction. An achievement test, a meta-cognitive awareness inventory, and semi-structured interviews were used to collect data. The results of the study indicated that the intervention based on meta-cognition caused significantly better acquisition of introductory programming concepts. Although there was no significant difference between experimental and control groups in terms of meta-cognitive awareness, qualitative data implied some differences related to students' problem-solving ways and meta-cognitive strategies. Results of retention and post tests revealed that scores of students in experimental and control groups declined at close rates. Moreover, most of the students in the experimental group reported positive feelings toward meta-cognitive instruction. Thus, it might be said that meta-cognitive training was an effective tool to improve students' understanding of introductory programming topics as indicated by post-test scores.
Personal Identity and Standard Economic Theory

This paper investigates the topic of personal identity in standard neoclassical theory. It looks first at the traditional utility theory of maximizing consumers and then at the extension of that analysis in the time-allocation-household-production model to see how relatively settled ontological commitments in the neoclassical research program undergo modification with its development. David Hume's skeptical treatment of personal identity is employed to assess the traditional view. The time-allocation model is shown to escape some of Hume's problems, but encounters difficulties of its own. Concluding remarks emphasize the importance of ontological analysis in economics, and suggest that identity issues underlie the investigation of causality in that analysis.
What has personality and emotional intelligence to do with ‘feeling different’ while using a foreign language?

Abstract The present study investigates the link between personality traits (OCEAN Personality test), emotional intelligence (EI) (Trait Emotional Intelligence Questionnaire) and the notion of ‘feeling different’ while using a foreign language among 102 Polish–English bilinguals and Polish L2 users of English who were immersed in a foreign language and culture. Statistical analyses reveal that personality traits such as Extraversion, Agreeableness and Openness had an effect on self-perceived changes in behaviour or body language and occurred while a foreign language was used. A similar effect had been found for EI factors such as Emotion expression, Empathy, Social awareness, Emotion perception, Emotion management, Emotionality and Sociability. These results could explain why some people report changes in personality when switching languages and some do not. Therefore, it is speculated that the existence of self-reported personality changes could be assigned more to certain personality traits and EI, which enables such subtle changes to be noticed, rather than stemming from a difference in the existence of such changes in these participants. The results of this study show the complexity of the relationship between language, culture and emotions, suggesting that both higher- and lower-order personality traits should be incorporated into further research on various aspects of bilingualism.
Passive smoking and asthma exacerbation

New findings on the biological defects underlying oxidative damage in patients with COPD Chronic bronchitis and pulmonary emphysema, also know as chronic obstructive pulmonary disease (COPD), is the only leading cause of death with a rising prevalence.1 Typically, the reduced lung function of COPD patients is associated with a general deconditioning of muscle function and the consequent development of a sedentary lifestyle.2 There is clear evidence that pulmonary rehabilitation programmes that involve generic physical exercise training can improve exercise capacity and state of health in patients with COPD,3 so outpatient and home based exercise training are part of the rehabilitation programme for these subjects in Western countries.4 The role of co-factors such as hypoxia and inflammation on the health of COPD patients and the resulting improvements of exercise performance with training are poorly understood, but the paper by Koechlin and colleagues5 in this issue of Thorax shows that exercise performance and peripheral muscle defects in patients with COPD relate to the level of arterial oxygenation. Using biochemical measures, the authors found that COPD patients with hypoxaemia had higher basal and resistance exercise induced levels of oxidatively damaged lipids and proteins in the vastus lateralis muscle than non-hypoxaemic patients. At baseline, the muscles of hypoxaemic COPD patients also had more lipofuscin inclusions in the muscle fibres and higher neutrophil numbers in the quadriceps muscle. These results suggest that adequate muscle oxygenation is critical to preventing the accumulation of wasteful oxidised lipid products and the harmful downstream reactions that are potentially associated with muscle wasting.6–8 Correlation analysis of endurance and arterial oxygen …
Mexican American Family Functioning and Acculturation: A Family Systems Perspective

This study examines the relationtship betweeni acculturation anid famtnily funictioninig in families of Mexican descent. Using a family s)stemns fraflmework, faiiii funictiotiiig is defined in terms of internal versus extrernalfameilv activitiies. Accultluratioln is defined by generational statu.s, language preferentcelproficienicy, aid letgtgh of-residence. Forty-five families were selected from Head Start programns aid placed ilto three groups-unacculturated, moderately acctulturated, and acctiltturated. Thte notherandfathlerof each famnily were interviewed and adminiistered a socio-demnographic questionnaire anid the Family Environment Scale (FES). Results gemierally support the stated hypolheses: As families of Mexicani descenti acculturate, they become increasingly involved with social systems outside the family while the basic in1terntal family system remains essenltially untchanged. These findings are discussed as they pettaini to diffrenest models of acculturationz and puiblic policy issues.
Enterohemorrhagic Escherichia coli(EHEC) Strains of Serogroup O118 Display Three Distinctive Clonal Groups of EHEC Pathogens

ABSTRACT A recent case report of a child infected with enterohemorrhagic Escherichia coli (EHEC) of serotype O118:H16 in Bavaria, in association with the isolation of a bovine O118 strain on the same farm (A. Weber, H. Klie, H. Richter, P. Gallien, M. Timm, and K. W. Perlberg, Berl. Muench. Tieraerztl. Wochenschr. 110:211–213, 1997), prompted us to investigate the relationship between bovine and human strains of serogroup O118. A total of 29 human O118 E. coli strains from Europe (21), Canada (4), and Peru (4) were compared by virulence typing and macrorestriction analysis with 7 bovine O118 EHEC strains isolated in Bavaria. Twenty-five of the human strains were characterized as EHEC. By serotyping and determination of the virulence-associated factors Shiga toxin (stx1 stx2 stx2 variants), intimin (eae), and EHEC hemolysin (HlyEHEC), three distinctive groups of O118 human pathogens were identified. Most of the strains belonged to serotype O118:H16, displaying the virulence traits Stx1, intimin, HlyEHEC, and EspP/PssA (group 1). In addition, we identified strains of serotype O118:H12 (Stx2d only; group 2) and of serotype O118:H30 (Stx2 and intimin; group 3). Macrorestriction analysis withBlnI and XbaI revealed that all strains with a single O118 serotype profile (O118:H12, O118:H16, and O118:H30) belonged to one clonal cluster, irrespective of their origin. Group 1 strains clustered in the same clonal group as the bovine O118:H16 strains. Moreover, four pairs of strains of different origins and indistinguishable by all other methods applied were identified as group 1 strains. Our data support the direct transmission of an EHEC O118:H16 strain from a calf to a 2-year-old boy in the above-mentioned case report. Since bovine and human O118:H16 strains represent the same clones, they must be considered zoonotic EHEC pathogens. In contrast, EHEC strains of serotypes O118:H12 and O118:H30 have been isolated only from humans, indicating a reservoir for certain human O118 EHEC strains other than bovines.
A Dissimilarity Measure for the ALC Description Logic

This work presents a dissimilarity measure for an expressive Description Logic endowed with the principal constructors employed in the standard representations for ontological knowledge. In particular, the focus is on the definition of a dissimilarity measure for the ALC description logic based both on the syntax and on the semantics of the descriptions. The measure is shown to be applicable to assess the dissimilarity for cases involving individuals.
Dynamic Phenomenology of Grapheme-Color Synesthesia

In grapheme-color synesthesia, observers perceive colors that are associated with letters and numbers. We tested the dynamic limits of this phenomenon by exposing two synesthetes to characters that rotate smoothly, that morph into other characters, that disappear abruptly, or that have colors either consistent or inconsistent with the corresponding synesthetic color. Rotating letters changed their synesthetic colors abruptly as letter identification changed or failed. Morphing letters also changed color together with a change in letter identification. Abrupt disappearance of a black character on a white background yielded a negative afterimage, but maintenance of the same synesthetic color. Our synesthetes could maintain both physical and synesthetic color in the same character, without conflict. Neon color spreading in one observer occurred for physical but not synesthetic color. These and other results show close linking of synesthetic color with character identity rather than image properties, in contrast to physical color.
Skin-penetrating parasites and the release of alarm substances in juvenile rainbow trout

Juvenile trout Oncorhynchus mykiss did not react to the odours of Diplostomum sp. cercariae alone, indicating that they were incapable of detecting the parasites directly. However, they increased the number of random darts as well as the amount of time spent motionless when exposed to the odours of a conspecific that was being infected by Diplostomum cercariae. These results suggest that even the minor damage inflicted by the cercariae to the fish’s skin was enough to cause the release of alarm substances. The effectiveness of the fish’s response with respect to the avoidance of parasites remains to be demonstrated.
Global Supplier Without a Global Brand Name: A Case Study of Hong Kong's Electronics Industry

The production capacity of Hong Kong's electronics manufacturers for certain electronic products has reached the number-one ranking amongst world export suppliers in terms of total quantity, quality and values. Yet, there is an absence of global brand name electronic products in the industry. This paper aims to explore how this development pattern is possible by conducting indepth interview research with 35 managing directors and CEOs from the manufacturer companies, and analyzing secondary data from the Hong Kong government. The research findings indicate that without government support and assistance to overcome the structural difficulties in the production process, and market and product diversification, an individual manufacturer can hardly grow bigger in company size continuously and mobilize large amounts of capital to develop global brand name products. The study also indicates that the role of the government has no effect on the growth of the export sector; however, it influences the industrial organizational structure and industrial specialization pattern.
Eclampsia: ten-years of experience in a rural tertiary hospital in the Niger delta, Nigeria

Summary Eclampsia is a major cause of maternal and perinatal morbidity and mortality in developing countries including Nigeria. However, most studies on eclampsia have been in urban communities. The objective of this study was to determine the incidence, pattern of clinical presentation and maternal and fetal outcomes of cases of eclampsia in a rural tertiary hospital in Nigeria. A descriptive review of all cases of eclampsia seen between 1 January 1994 and 31 December 2003 in a tertiary hospital was undertaken. The incidence of eclampsia was 1 in 43 deliveries (2.3%). Most of the women (86.2%) were unbooked for antenatal care in our centre; 58.5% were nullipara, and the onset of seizures was in the ante-partum period (68.3%). Patients presenting were mostly from the traditional birth attendants (46.3%). The time interval between the onset of convulsions and hospital admission was less than 12 h in 52% of cases. The majority of the women had premonitory symptoms (78.8%) with headache being the most frequent (78%). The major route of delivery was abdominal (66.7%). The case fatality rate was 15.4%. Most of the deaths (89.5%) were in unbooked women and the most common causes of death were acute renal failure, cardiopulmonary failure, disseminated intravascular coagulopathy and cerebrovascular accident. The perinatal mortality rate was 195 per 1000 births. This study found a high incidence of eclampsia. It is recommended that community-based health education programmes should be pursued with vigour to enhance early utilisation of modern antenatal care services in rural areas. Traditional birth attendants need to be trained and integrated into the heathcare team. Appropriate mechanisms should be put in place to improve clinic referrals. The capacity of tertiary health institutions to provide intensive care for eclamptics need to be improved with continuous training of heathcare personnel and provision of necessary equipment.
Grassroots Organizing with Homeless People: A Participatory Research Approach

This article discusses Participatory Research (PR), an intervention approach that involves oppressed people in the analysis of and solutions to social problems. A case study is provided to illustrate the application of PR's principles and components. The project involved the creation of a Homeless Persons Union, whose purpose was to empower participants both individually and collectively in a political struggle against homelessness. PR is suggested as a useful approach for researchers and activists engaged in grassroots organizing.
Expression of apoptosis regulators in germinal centers and germinal center‐derived B‐cell lymphomas: Insight into B‐cell lymphomagenesis

Germinal centers (GC) are unique sites in peripheral lymphoid tissue where clonal selection of B cells takes place in response to stimulation by various antigens. To select a proper B‐cell clone for antibody‐mediated immunity, multiple apoptotic signals synchronize in the GC, both in negative and positive selection pathways. At the same time, GC have been known to be a major source of B‐cell lymphomas including follicular and Burkitt's, and also some diffuse large B‐cell lymphomas. Therefore, uncovering the biological characteristics of GC would greatly contribute to understanding lymphomagenesis, or progression of B‐cell lymphomas of GC origin. Herein the authors briefly explain the expression and pathophysiological significance of apoptosis regulators in GC, focusing particularly on Bcl‐2, Fas (CD95) and a transcription factor, nuclear factor of activated T cells, which seems to play a critical role in regulating cellular dynamics of GC B cells via B‐cell antigen receptor. The expression of these molecules is then compared with that of the neoplastic counterpart B‐cell lymphomas in order to consider lymphomagenesis of GC origin. In conclusion, follicular lymphoma closely reflected characteristics of GC among these B‐cell lymphomas, although it acquires strong expression of apoptosis‐resistant gene, bcl‐2.
Homes from Home: Memories and Projections

ABSTRACT This article presents an interpretation of home, in which home is not fixed in time and space, but is reinvented time after time in different locations. Memories and projections are the quintessential links in a lifetime cycle of home inventions. This is the predicament of most urbanites in Western countries for whom a lifetime stay in the natal home or the natal town have become an exception. In concentrating on the material level of homemaking, especially on objects and object-related practices in the reinvention of home, this article addresses the intermediary role of objects, not only in reviving memories of past homes, but also in linking present homes to future homes. The case of Dutch university students is presented to illustrate not only the material conditions of a lifetime cycle of reinventions of home in different locations, but also the psychological conditions of home attachment as mirrored in the discursive transition of home.
Lung Cancer Care in General Hospitals

Diagnostic procedure, therapeutic care and degree of follow-up delivered to 1692 lung cancer patients over 2 years (1978–79) in 31 Italian hospitals were reviewed. The data show marked deficiencies in the various indicators analysed: staging by standard methods was recorded only in 13% of patients; reliable histocytologic classification in 54% of patients. A group of commonly accepted protocols was adopted as first-line therapy only in 49% of treated cases; 19% of patients were regularly followed according to standard programs, whereas 49% had been dropped without any information in the charts. Better performance, although not satisfactory, was found in hospitals with oncologic facilities and wards compared to centers without « ad hoc » organizations. The discussion focussed on the limits of organizational measures and efforts to determine widespread improvement in care for a disease such as lung cancer for which real therapeutic gains are still hard to achieve.
Fatigue in Operational Settings: Examples from the Aviation Environment

The need for 24-h operations creates nonstandard and altered work schedules that can lead to cumulative sleep loss and circadian disruption. These factors can lead to fatigue and sleepiness and affect performance and productivity on the job. The approach, research, and results of the NASA Ames Fatigue Countermeasures Program are described to illustrate one attempt to address these issues in the aviation environment. The scientific and operational relevance of these factors is discussed, and provocative issues for future research are presented.
[Distortion product of otoacoustic emissions in normal hearing and sensorineural hearing loss].

Based on a variety of experimental and clinical studies the diagnostic significance of transient evoked otoacoustic emissions (TEOAEs) is well established. This is also due to the availability of commercial hardware and software which is optimized for the recording of click-evoked OAEs. In cases with distortion product otoacoustic emissions (DPOAEs) the significance for clinical purposes is not yet clear. This study presents results obtained in normal hearing subjects and patients with sensorineural hearing losses (214 ears). The study focuses on three problems: 1. Incidence of DPOAEs in different groups of hearing loss. 2. Level of DPOAEs at various frequencies in each group of hearing loss. 3. Frequency-specific relationships between hearing loss and DPOAEs. Recording of DPOAEs was performed with the ILO92 system and standard configuration (primary tone level, 70 dB SPL). In normal hearing ears DPOAEs were observed at all frequencies above 1 kHz. In cases with moderate hearing loss the detection rate decreased to about 80%. With further increases in hearing loss the detection rate and level of DPOAEs decreased. At frequencies below 1500 Hz even in normal hearing subjects, the level of DPOAEs only slightly exceeded the noise level. The upper limit of hearing loss for which DPOAEs could be observed depended on frequency. In the low-frequency range DPOAEs were absent in ears with a sensorineural hearing loss greater than 35-45 dB; at frequencies between 4 and 6 kHz DPOAEs were observed even in ears with a hearing loss 65 dB. (ABSTRACT TRUNCATED AT 250 WORDS)
Punk Rock, Festival Fringes and Football Fanzines: A Future for Social and Environmental Accounting Research?

Abstract This is a commentary piece that responds to Correa Ruiz and Laine [2013. “Struggling Against Like-Minded Conformity to Enliven SEAR: A Call for Passion. ” Social and Environmental Accountability Journal 33 (3): 134–144] and is intended to create a bit of controversy and debate.