Miracle-dz/UniFAR-FTUs huggingface dataset:
Contextualization and value-in-context: How context frames exchange

The purpose of this paper is to explore the role of context in service provision and, more broadly, in market co-creation. We oscillate foci from an individual actor at the micro level to a market at the macro level to make the scaleable influence of context more salient. This reveals the meso level, which is nestled between the micro and macro levels. We discuss how these market levels influence one another. We conceptualize markets as simultaneous, continuous exchanges that are bounded by each of these levels of context.
Mapping Environmental Health Injustice in Chuka Town Through Land Use Refinement Method and Dispersal Modeling GIS Based Techniques

As the world population becomes urbanized, issues of environmental health, justice and equity are growing in interest. In developing countries, improper waste management contributes to environmental related health risks. In Kenya particularly, dumpsites are located close to residential blocks in urban areas exposing surrounding communities to olfactory nuisance, toxic smokes and diseases. To document cases of local environmental health injustice, sub population at exposure risk to smoke plume was assessed using a case study of Chuka town open dump site. Framework adopted in evaluating potential health risks was that on principles of risk assessment and Geographic Information System (GIS) based modeling. In this study, land use refinement and dispersal modeling methods were used to estimate population at exposure risk. The findings shown about 55,162 persons living along the smoke dispersion route were at high risk of exposure to hazardous smoke plumes. The exposure risk showed a spatial variation across the blocks in relation to land use and terrain. Over 73 percent of population in the affected blocks engaged in informal sector employment and were the less advantaged groups of this town’s urban community. The results of this study are consistent with those of related studies which have shown that location of noxious facilities is often within neighborhoods of minority urban poor. For the case of Chuka town, relocation of the dumpsite to a less populated block and the engagement of affected communities in mitigating the injustice will ease the ecological burden currently borne by these sub population.
Gentle accumulator drive (GAD) - new directions of development for the mining industry

Streszczenie. Ciągnik gorniczy GAD-1 wyposazony w nowoczesne baterie litowo-jonowe nowej generacji moze stanowic korzystną alternatywe dla obecnie stosowanych maszyn transportowych. Jego zastosowanie moze znacząco poprawic jakośc powietrza oraz warunki pracy w podziemiach kopaln, gdzie wzrastająca liczba napedow spalinowych w ciągnikach podwieszanych oraz torowych naraza pracownikow na wysoką koncentracje spalin, oraz generowanego ciepla i halasu. GAD-1 jest wyposazony w naped cierny oraz zebatkowy. Artykul opisuje prototyp kolejki ciągnika, ktory zostal oparty o szereg nowych rozwiązan technicznych po raz pierwszy zastosowanych w przemyśle gorniczym. (Ciągnik gorniczy GAD - nowe mozliwości w rozwoju techniki gorniczej) Abstract. GAD-1 mining drivetrain with state-of-the-art battery electric drive, equipped with the batteries of new generation can be advantageous alternative to currently applied transportation machines. It can significantly improve air quality and working conditions in underground mine, where in the result of increasing number of diesel drives in suspended monorails and floor-mounted railways the workers are exposed to high concentration of exhaust gases, generated heat and noise. The GAD-1 can also generate pulling force in rack-and-pinion and friction drive system. The article describes a prototype drivetrain GAD-1, which was based on a range of new technical solutions applied for the first time in the mining industry.
Emitter Velocity Estimation Comparison for Frequency Difference of Arrival Measurement Based Single and Multiple Reference Lateration Algorithm

The accuracy at which the instantaneous velocity and position of a non-stationary emitting source estimated using a lateration algorithm depends on several factors such as the lateration algorithm approach, the number and choice of reference receiving station (RS) used in developing the lateration algorithm. In this paper, the use of multiple reference RSs was proposed to improve the velocity estimation accuracy of the frequency difference of arrival (FDOA) based lateration algorithm. The velocity estimation performance of the proposed multiple reference FDOA based lateration algorithm is compared with the conventional approach of using single reference RS at some selected emitter positions using Monte Carlo simulation. Simulation result based on an equilateral triangle RS configuration shows that the use of multiple reference RSs improved the velocity estimation accuracy of the lateration algorithm. Based on the selected emitter positions, a reduction in velocity estimation error of about 0.033 and 1.31 for emitter positions at ranges 0.5 km and 5 km respectively was achieved using the multiple reference lateration algorithm.
The Effects of Cognitive and Noncognitive Theories of Motivation on Morale and Performance of Correctional Educators.

A study assessed the perceived effectiveness of cognitive theories of motivation on correctional educators in Tennessee in facilitating teacher attitude and performance as compared to noncognitive models. The Performance Motivation Questionnaire obtained demographic information and responses to items on motivational concepts and practices. Responses were arranged on a Likert scale. The subjects were all certified teachers and administrators employed by the Tennessee Department of Correction and the Tennessee Department of Youth Development; 192 of 240 completed questionnaires. Four hypotheses were tested, comparing the perceptions of correctional educators of cognitive and noncognitive approaches to staff motivation in terms of effects on their attitudes, morale, and performance. The other three variables were types of students, educator's sex, and educator's position. Data were analyzed using means, standard deviations, and t-test of significance. Research findings showed a significant difference in the perceptions of correctional educators toward noncognitive versus cognitive theories and approaches to staff motivation, especially in terms of what best facilitates positive effects on teacher attitudes, morale, and performance. Overall, the cognitive approach was preferred to the noncognitive. No significant differences were found in perceptions of educators working with adult and juvenile students, male and female educators, and supervisors and teachers. (Seven data tables are provided.) (YLB) *********************************************************************** Reproductions supplied by EDRS are the best that can be made from the original document. *****************************A***************************************** The Effects of Cognitive and Noncognitive Theories of Motivation on Morale and Performance of Correctional Educators Eben N. Gilbert. , Jr. Tennessee State University Presented to The Annual Meeting of the Mid-South Educational Research Association Knoxville, Tennessee November 11-13, 1992 U.S. DEPARTMENT OF EDUCATION 011.5. 43 of Ed:JUN:Mat Research and Improvement E bCATIONAL RESOURCES INFORMATION CENTER (ERICI 0 This ck>cument has been reproduced an received from the person or organization originating it O Minor changes have been made to improve reproduction duality Points of view or opinions stated in this docu. mere do not necessarily represent official OEM position or policy PERMISSION TO REPRODUCE THIS MATERIAL HAS BEEN GRANTED BY / 10 111E 'EDOCATIONAL RESOURCES INFORMATION CENTER (ERIC)"
Positioning Control of a One Mass Rotary System with CM-NCTF Controller

In this paper, a Continuous Motion Nominal Characteristic Trajectory Following (CM-NCTF) controller is proposed as a practical control approach on a DC driven one mass rotary system. A CM-NCTF controller has simple controller structure and easy design procedures, and it does not require the exact plant model parameters. The CM-NCTF controller is made up of two major parts: a Nominal Characteristic Trajectory (NCT) and a Proportional-Integral (PI) compensator. The NCT is constructed on a phase plane with open loop information of the mechanism, while PI compensator is designed to ensure the mechanism follows the NCT and stops at the origin of the phase plane. The positioning performance of the CM-NCTF controller are evaluated and compared with a PID controller in point-to-point and tracking motion experimentally. The proposed controller achieved at least 36.8 % smaller steady state error than the PID controller, with no presence of overshoot in point-to-point motion. In tracking motion, the maximum tracking error produced by the CM-NCTF controller is 3 times lower than the PID controller in 1 rad amplitude. Overall, the experimental results demonstrated that the CM-NCTF controller has greater positioning and tracking performances than the PID controller.
Dynamic Performance Prediction of an Axial Flux Resolver

The robustness against static eccentricity has caused axial flux resolvers (AFRs) to be proposed in high performance motion control systems. In this paper, the dynamic performance of AFR is predicted using a mathematical model based on d-q axis theory. In particular, the proposed model takes into account the stator currents of brushless AFR and it will be able to model the effect of static eccentricity. Furthermore, it is used to compute the dynamic and steady state equivalent circuits. Finally, the studied AFR is fabricated and tested. Good agreement between simulation results and experimental ones confirms the proposed model. Streszczenie. Analizowano resolver z osiowym strumieniem AFR. Na podstawie modelu matematycznego oceniono wlaściwości dynamiczne. Szczegolną uwage zwrocono na prąd stojana i efekt ekscentryczności. Przedstawiono uklad zastepczy. Zbadano model. (Wlaściwości dynamiczne resolvera z osiowym strumienem)
Real-time vocal tract modelling

To date, most speech synthesis techniques have relied upon the representation of the vocal tract by some form of filter, a typical example being linear predictive coding (LPC). This paper describes the development of a physiologically realistic model of the vocal tract using the well-established technique of transmission line modelling (TLM). This technique is based on the principle of wave scattering at transmission line segment boundaries and may be used in one, two, or three dimensions. This work uses this technique to model the vocal tract using a one-dimensional transmission line. A six-port scattering node is applied in the region separating the pharyngeal, oral, and the nasal parts of the vocal tract.
The Process of Ghetto Formation: Evidence from Chicago

Residential segregation along ethnic and racial lines is a fact of life in the US and in many other countries. A substantial body of literature documents the economic and social costs of segregation. Ethnic sorting retards inter-generational improvements for relatively disadvantaged groups, reduces empathetic connections between ethnic groups and therefore diminishes political support for redistribution (as in Cutler, Elmendorf and Zeckhauser (1993)) and increases statistical discrimination because whites, for example, end up relying more on stereotypes of blacks instead of actual experience (Wilson 1987). While we know a great deal about the outcomes of residential segregation on society the mechanism which gives rise to ghettos in the first place is less clear. What features make a residential area in the city particularly susceptible to ethnic
EFFECTIVENESS OF ACCEPTANCE AND COMMITMENT THERAPY ON PSYCHOLOGICAL WELL-BEING AND ANGER REDUCTION AMONG MOTHERS WITH DEAF CHILDREN IN TEHRAN

Background and Aim: As the acceptance and commitment therapy (ACT) helps improve psychological well-being, the effectiveness of this approach has drawn the attention of many researchers recently. This study aimed at evaluating the effectiveness of ACT on psychological well-being and anger reduction among mothers with deaf children in Tehran. Methods: Thirty mothers of deaf children, who met the inclusion criteria, were randomly divided into control and experimental groups (15 women per group). For the experimental group, ten sessions of ACT on anger reduction were held, whereas the control group received no education in this respect. Their psychological well-being level and anger reduction level were evaluated before and after the intervention using Ryff scales of psychological well-being and the multidimensional anger inventory (MAI), respectively. Results: The ACT affected the psychological well-being and anger reduction among mothers with deaf children and persisted at follow-up (p<0.001). Conclusion: This study indicates the importance of using these interventions in the case of mothers with deaf children and providing new horizons in the interventions. In other words, ACT has a performance compatible with many variables.
Effect of prickly pear cactus seeds oil on the blood glucose level of streptozotocin-induced diabetic rats and its molecular mechanisms.

This study was undertaken to investigate the hypoglycemic effect of the prickly pear cactus seeds oil (PPO) in streptozotocin-induced diabetic rats (STZ) and its molecular mechanisms. Oil extracts exhibited strong antioxidant properties when compared to α-tocopherol. Unsaturated fatty acids were the most fatty acids content representing up to 80.9%. Administration of PPO at different doses to STZ induced diabetic rats, resulted in significant decrease (P<0.05) in plasma glucose level in a dose dependent manner. Treatment with PPO elicited an increase in the expression level of glucose transporter 2 (Slc2a2) gene but reduced the expression of phosphoenolpyruvate carboxykinase (PCK1) gene. More fore, PPO treated rats, showed significantly lower levels of serum alanine transaminase (ALT), aspartate aminotransferase (AST) and urea levels compared to STZ untreated rats. Prickly pear cactus oil is beneficial for improvement of hyperglycemia by increasing gene expression of liver Slc2a2 and reducing expression of PCK1 genes in streptozotocin-induced diabetic rats.
The Impact of Corporate Governance on Firm's Performance: Evidence from Oil and Gas Sector of Pakistan

The purpose of this study is to examine the impact of corporate governance on firm's performance. A sample of 14 oil and gas related firms has been taken for the period of 2005 to 2010 (N=14*6). Canonical regression analysis has been done to analyze the impact of corporate governance on firm's performance. The present study focused on the three variables for measuring the firm's performance such as Return on assets (ROA), Return on Equity (ROE) and Net Profit Margin (NPM). The obtained results report that corporate governance has significant and positive impact on firm's performance and it shows that firm's performance can be increased by improving the corporate governance structure.
On the Performability of Hierarchical Wireless Networked Control Systems

This paper investigates the performability of hierarchical Wireless Networked Control Systems (WNCS). The WNCS studied can operate in two modes: passive supervisor and active supervisor. It is first shown that the Markov models for both modes are identical. Performability models are then developed and a case study shows how to use these models to help make design decisions. More specifically, it is observed that the performability of a passive supervisor system increases in time while that of an active supervisor system decreases in time.
Globalization and the gains from variety: size and openness of countries and the extensive margin

With the seminal work of Feenstra (1994) and its application to the United States by Broda and Weinstein (2006) the gains from variety through trade as suggested by Krugman (1979) have become quantifiable. My paper adds to this literature in different respects: On the theoretical side, the Feenstra ratios are reinterpreted to allow for unobserved growth at the extensive margin. Also, the gains from variety are decomposed regarding countries of origin and industries. On the empirical side, the gains from variety are calculated for the United States and Switzerland, a small open economy. Analyzing the empirical results for these countries as well as data from other OECD economies, it is then argued that size and openness of countries as well as the (unobserved) true growth at the extensive margin are important factors in determining the welfare gains from variety.
Stellar envelope inflation near the Eddington limit - Implications for the radii of Wolf-Rayet stars and luminous blue variables

Context. It has been proposed that the envelopes of luminous stars may be subject to substantial radius inflation. The peculiar structure of such inflated envelopes, with an almost void, radiatively dominated region beneath a thin, dense shell could mean that many in reality compact stars are hidden below inflated envelopes, displaying much lower effective temperatures. The inflation effect has been discussed in relation to the radius problem of Wolf-Rayet (WR) stars, but has yet failed to explain the large observed radii of Galactic WR stars. Aims. We wish to obtain a physical perspective of the inflation effect, and study the consequences for the radii of WR stars, and luminous blue variables (LBVs). For WR stars the observed radii are up to an order of magnitude larger than predicted by theory, whilst S Doradus-type LBVs are subject to humongous radius variations, which remain as yet ill-explained. Methods. We use a dual approach to investigate the envelope inflation, based on numerical models for stars near the Eddington limit, and a new analytic formalism to describe the effect. An additional new aspect is that we take the effect of density inhomogeneities (clumping) within the outer stellar envelopes into account. Results. Due to the effect of clumping we are able to bring the observed WR radii in agreement with theory. Based on our new formalism, we find that the radial inflation is a function of a dimensionless parameter W, which largely depends on the topology of the Fe-opacity peak, i.e., on material properties. For W > 1, we discover an instability limit, for which the stellar envelope becomes gravitationally unbound, i.e. there no longer exists a static solution. Within this framework we are also able to explain the S Doradustype instabilities for LBVs like AG Car, with a possible triggering due to changes in stellar rotation. Conclusions. The stellar effective temperatures in the upper Hertzsprung-Russell (HR) diagram are potentially strongly affected by the inflation effect. This may have particularly strong effects on the evolved massive LBV and WR stars just prior to their final collapse, as the progenitors of supernovae (SNe) Ibc, SNe II, and long-duration gamma-ray bursts (long GRBs).
Predicting hyperlipidemia using enhanced ensemble classifier

Advancement in medical technology has resulted in bulk creation of electronic medical health records. These health records contain valuable data which are not fully utilized. Efficient usage of data mining techniques helps in discovering potentially relevant facts from medical records. Classification plays an important role in disease prediction. In this paper we developed a prediction model for predicting hyperlipidemia based on ensemble classification. Support Vector Machine, Naïve Bayes Classifier, KNN Classifier and Decision Tree method are combined for developing the ensemble classifier. Performance of each classifier is evaluated separately. An overall accuracy of 97.07% has been obtained by using ensemble approach which is better than the performance of each classifier.
Inequality, politics and economic growth

The paper studies the relationship between inequality and economic growth. This is done in a two sector model of endogenous growth with agents characterized by heterogeneity of factor endowments. The private sector consists of a large number of competitive firms who produce the only final good in the economy. This good is both consumable as well as accumulable. The government is seen to produce a productive factor interpreted as infrastructure. Infrastructure is both nonrival and accumulable. Infrastructural services flow into the production of infrastructural stocks as well as the final good. Capital used for infrastructural production is financed by the government by taxing capital income. The choice of the growth rate is determined by the tax rate on capital income. We study the choice of the economy's growth rate under a median voter democracy. The results show that inequality of the distribution of capital does not hamper growth.
Mourning dove densities on Chihuahuan Desert rangelands

Abstract Mourning dove (Zenaida macroura L.) densities were determined using strip census techniques over a 2-year period (spring 1996 to winter 1998) on pastures in early-, mid-, and late-seral ecological condition. This study was conducted on the Chihuahuan Desert Rangeland Research Center and adjacent Bureau of Land Management rangelands in south-central New Mexico on 6 adjoining pastures that were similar in terrain and shape. Mourning dove densities pooled across sampling periods (8) were different (P < 0.10) on pastures in mid- and early-seral condition. They averaged 10.3, 33.9, and 7.2 birds km−2 on pastures in late-, mid- and early-seral condition, respectively. Leatherleaf croton (Croton pottsii Lam.), the primary mourning dove food on all study pastures, was more abundant (P < 0.10) on late- and mid-seral pastures than on early-seral pastures. Therefore, heavy livestock grazing may adversely affect mourning dove populations in the Chihuahuan Desert by depleting leatherleaf croton. Autumn perennial grass cover and standing biomass differed (P < 0.10) among seral stages. More optimal interspersion of bare ground and perennial grasses may further explain why mid-seral rangelands tend to favor mourning doves. Our study shows mourning doves in the Chihuahuan Desert prefer moderately grazed, mid-seral rangelands over heavily grazed, early-seral rangelands.
Physiological responses of two sublittoral nassariid gastropods to hypoxia

Anthropogenic hypoxia of coastal bottom waters now affects hundreds of thousands of km 2 worldwide. The present study investigated the physiological responses of 2 sublittoral nassariid gastropods, Nassarius conoidalis and N. siquijorensis, to hypoxia using endpoints, including scope for growth (SfG) and the related energy budget items (i.e. rate of energy intake from food, rate of energy lost to respiration and rate of energy lost to excretion) over a 31-d laboratory experiment. Our results showed that after exposure for ≥8 d, the stronger hypoxia treatment of 1.5 mg O2 l -1 significantly reduced the rate of energy intake for Nassarius siquijorensis, while N. conoidalis stopped feeding in the same treatment. SfG was sig nificantly reduced in N. siquijorensis after exposure to 1.5 mg O2 l -1 during the mid and late exposure period. Exposure to ≤3 mg O2 l -1 also resulted in a negative SfG for N. conoidalis, except for the weaker hypoxia treatment during the late exposure period. Nassariid gastropods occur in great abundance in Hong Kong waters; therefore, any adverse effect on these gastropods may lead to major ecological consequences, including altered trophodynamics and disrupted nutrient recycling processes in coastal ecosystems.