Miracle-dz/UniFAR-FTUs huggingface dataset:
Unpacking differences in psychological contracts of organisational expatriates and self-initiated expatriates: a mixed method study

Global staffing has remained a main focus within the field of International Human Resource Management (IHRM) since the 1970s (Collings, Scullion and Morley, 2007). With the changing patterns of global staffing in multinational enterprises, the latest trend has seen a decline in traditional international posts, and a rise in the number of self-initiated expatriates (SIEs), with Asian countries being the emerging popular migration destinations (Collings et al., 2007; OECD, 2012). In recent years, scholars have presented the importance of treating organisational expatriates (OEs) and SIEs as heterogeneous groups (Altman and Baruch, 2012; Guzzo, Noonon, & Elron, 1994). OEs are defined as expatriates whom are sent to international assignments by their home employers, whereas SIEs are those who make their own decisions to work and live in a foreign country (Doherty et al., 2013). SIEs have become a larger segment relative to OEs in global labour market (Myers and Pringle, 2005). Indeed, multi-National Corporations (MNCs) have indicated an intention to replace OE managers with local-hired SIEs (Collings et al., 2007). With the increased reliance on SIEs relative to OEs in organisations, it is important to acknowledge that the drivers and motivations of SIEs might differ, as well as their perceptions towards the Psychological Contract (PC). In the present study, we adopt the definition by Rousseau (1989, p.123) whereby the PC refers to the employee’s beliefs “regarding the terms and conditions of a reciprocal exchange agreement between that focal person and another party”. Given the protean career attitudes of SIEs, which are described as a self-driven and value-oriented towards career advancement (Bricoe et al., 2006), it might result in substantial differences for SIEs in their expectation of their employer and understanding of the perceived promises relative to OEs. Moreover, previous studies have indicated various (perceived) differences of the two groups, e.g. motives, interaction with locals, work adjustment and career advancement opportunities, international mobility patterns (Alshahrani and Morley, 2015; Altman and Baruch, 2012; Guzzo, Noonon, & Elron, 1994). These factors may also have a significant impact on the differences in how SIEs experience the lack of fulfilment of the employer’s obligations, and their emotional reactions to perceived failed promises made by the employer.
Speed Control of Linear Induction Motor using Sliding Mode Controller Considering the End Effects

In the present paper, the mover speed control of a linear induction motor (LIM) using a sliding mode control design is proposed, considering the end effects. First, the indirect field-oriented control LIM is derived, considering the end effects. The sliding mode control design is then investigated to achieve speed- and flux-tracking under load thrust force disturbance. The numerical simulation results of the proposed scheme present good performances in comparison to that of the classical sliding mode control.
Ernst Abbe's Scientific Management: Theoretical Insights from a Nineteenth-Century Dynamic Capabilities Approach

'Scientific management' is the label Frederick Taylor attached to the system of shop-floor management devised by him. In this article we present our discovery of very different 'scientific' management principles that, roughly concurrently with Taylorism, were developed by German physicist-turned-manager Ernst Abbe and that are codified in the statutes of the Carl Zeiss Foundation created by Abbe. They exhibit striking parallels to resource- and capability-based theories of the firm, and indicate managerial challenges that warrant further theoretical elaboration. Abbe develops an account for managing a science-based firm and securing its long-term competitiveness, giving detailed prescriptions with regard to the type and scope of a firm's activities, its organizational set-up and its labor relations. We highlight some of the most characteristic features of Abbe's thought, discuss its effects on the development of the firms owned by the Zeiss Foundation, and compare it to and draw out implications for present-day management theory. Copyright 2005, Oxford University Press.
Cumulative Exposure to Disadvantage and the Intergenerational Transmission of Neighbourhood Effects

Studies of neighbourhood effects typically investigate the instantaneous effect of point-in-time measures of neighbourhood poverty on individual outcomes. It has been suggested that it is not solely the current neighbourhood, but also the neighbourhood history of an individual that is important in determining an individual’s outcomes. The effect of long-term exposure to poverty neighbourhoods on adults has largely been ignored in the empirical literature, partly due to a lack of suitable data. Using a population of parental home-leavers in Stockholm, Sweden, this study is innovative in investigating the effects of two temporal dimensions of exposure to neighbourhood environments on personal income later in life: the parental neighbourhood at the time of leaving the home and the cumulative exposure to poverty neighbourhoods in the subsequent 17 years. Using unique longitudinal Swedish register data and bespoke individual neighbourhoods, we are the first to employ a hybrid model, which combines both random and fixed effects approaches, in a study of neighbourhood effects. We find independent and non-trivial effects on income of the parental neighbourhood and cumulative exposure to poverty concentration neighbourhoods. The intergenerational transmission and exposure effects suggest the need for a more dynamic formulation of the neighbourhood effects hypothesis which explicitly takes temporal dimensions into account.
Point-of-Sale Specific Willingness to Pay for Quality-Differentiated Beef

Despite the growing interest of producers and consumers toward grass-fed, local, and organic beef, the supply chain for these products to reach consumers is not always clear-cut. Among the available options are direct-to-consumers and the conventional food supply chain. Although consumers may pay a premium for beef differentiated by quality attributes, the willingness to pay (WTP) difference across point-of-sales is unclear. In this study, we contrast the WTPs for conventional, grass-fed, local, and organic beef by brick-and-mortar supermarkets (B&Ms), farmers’ markets, and via online stores. We conduct a choice experiment with a nationwide online sample of American consumers. The findings indicate that compared to B&Ms, more consumers are reluctant to purchase beef from farmers’ markets and online outlets. Moreover, the WTP for quality-differentiated attributes varies significantly by the point-of-sales. For most consumers, the downside of online or farmers’ markets outweighs the upside of the quality-differentiated attributes sold in those venues.
The sampling volume of trawl and acoustics: estimating availability probabilities from observations of tracked individual fish

The effective sampling volume of trawl and acoustics is an important parameter in fish abundance estimation surveys. This paper presents a method to compute the probability of a fish being available to the bottom trawl and the probability of it being seen on the echo sounder, given its initial position relative to the vessel path. These probabilities are then related to the calculation of the effective observational volume for trawl and acoustics, the two main tools of measuring abundance of Atlantic cod (Gadus morhua) and haddock (Melanogrammus aeglefinus). As an example, the computation is carried out for a typical vertical distribution in the Barents Sea. Our model is based on an Ornstein- Uhlenbeck model for the fish swimming trajectories, and its parameters are estimated using observations of swimming tra- jectories for individual fish, recorded by a split-beam echo sounder. The model itself constitutes a general method to trans- late observations on behaviour of individual fish to probability maps. The results indicate a typical fishing height of 20 m for the bottom trawl, but it is also shown that there is a relatively low probability of catching by the trawl what you see on the echo sounder, even for fish positioned directly in the trawl path. This is because of strong lateral movements of the fish. Resume´ : Le volume effectivement echantillonneest une variable importante dans les inventaires d'abondance des pois- sons faits par chalutage ou par acoustique. Notre travail presente une methode pour calculer la probabilitequ'un poisson soit accessible au chalut de fond et qu'il soit visible sur l'echosondeur, etant donnesa position initiale relative ala trajec- toire du navire. Ces probabilites peuvent ensuite etre reliees au calcul du volume effectif obtenu par chalutage ou acous- tique, les deux outils principaux pour mesurer l'abondance de la morue franche (Gadus morhua) et l'aiglefin (Melanogrammus aeglefinus). Le calcul d'une repartition verticale typique de la mer de Barents est donneen exemple. Notre modele se base sur le modele d'Ornstein-Uhlenbeck des trajectoires de nage des poissons et les parametres sont es- timesapartir d'observations de trajectoires de nage de poissons individuels enregistrees par un echosondeur a faisceau di- vise ´. Le modele lui-meme represente une methode generale pour traduire des observations faites sur un seul poisson individuel en cartes de probabilite ´. Nos resultats indiquent que la hauteur moyenne typique de peche d'un chalut de fond est de 20 m, mais aussi qu'il y a une probabiliterelativement faible de capture par le chalut des poissons visibles al'echo- sondeur, meme pour les poissons places directement dans la trajectoire du chalut; cela s'explique par l'importance des de ´- placements lateraux des poissons. (Traduit par la Redaction)
Adsorption and chromatographic separation of rare earths with EDTA- and DTPA-functionalized chitosan biopolymers

Chitosan, which is derived from chitin by deacetylation, is one of the most promising biopolymers for adsorption of metal ions from diluted waste streams. By functionalization of chitosan with ethylenediaminetetraacetic acid (EDTA) or diethylenetriaminepentaacetic acid (DTPA) groups, it is possible to obtain a material that is much less soluble in acidic aqueous solutions than native chitosan. The coordinating EDTA and DTPA ligands are very efficient for binding of rare-earth (lanthanide) ions. The functionalization was achieved by reaction of chitosan with EDTA bisanhydride or DTPA bisanhydride. The binding of lanthanide ions to functionalized chitosan was investigated by FTIR (binding of Nd3+) and luminescence spectroscopy (binding of Eu3+). Comparison of the luminescence decay times of the europium(III) coordinated chitosan complexes swollen in water and in heavy water allowed determination of the hydration number of the coordinated Eu3+ ion. Batch adsorption tests for the uptake of neodymium(III) from aqueous nitrate solutions were performed for EDTA-chitosan and DTPA-chitosan. Different experimental parameters such as the adsorption kinetics, loading capacity and pH of the aqueous feed were investigated. The modified chitosan materials are much more effective for adsorption of rare earths than unmodified chitosan. It was shown that adjustment of the pH of the aqueous feed solution allows achieving selectivity for adsorption of rare-earth ions for mixtures containing two different ions. After stripping of the metal content, the modified chitosans could be reused for new adsorption experiments. Medium pressure liquid chromatography (MPLC) with DTPA-chitosan/silica as the stationary phase and a dilute nitric acid solution as eluent was used for the separation of the following mixtures of rare-earth ions: Nd3+/Ho3+, Pr3+/Nd3+ and Pr3+/Nd3+/Ho3+. The experiments show that separation of the rare-earth ions is feasible with DTPA-chitosan/silica, without the need for using solutions of chelating agents as eluents.
Context factors in context-aware recommender systems

With the rise in volume of data from various sources, we have an increasing need of recommender systems, which provide a data filtering to help users to find appropriate information. To satisfy even more users' needs, a new kind of recommender systems called context-aware recommender systems (CARS) integrate contextual information related to the user in their recommendation process. However there exists no unique definition for context. In this poster we propose a context representation for CARS, to improve upon previous propositions, which can be used for a large spectrum of applications.
Policy and Resource Orchestration in Software-Defined Networks

This position paper deals with policy and resource orchestration in large-scale software-defined networks (SDNs) through network function virtualization (NFV). One of the key issues in a large-scale SDN is the automated policy orchestration and efficient resource sharing. The rich set of SDN policies that collectively drive the behavior of a single SDN often interacts in complex ways. With NFV, on the other hand, multiple workloads can co-locate and use a given infrastructure simultaneously. We examine challenges related to the automated orchestration and provisions of SDN-enabled policies and software middleboxes. We propose novel solutions — optimizations algorithms and reasoning procedures — that advance the state of art SDN orchestration service.
The R-package phtt: Panel Data Analysis with Heterogeneous Time Trends

The R-package phtt provides estimation procedures for panel data with large dimensions n, T, and general forms of unobservable heterogeneous effects. Particularly, the estimation procedures are those of Bai (2009) and Kneip, Sickles, and Song (2012), which complement one another very well: both models assume the unobservable heterogeneous effects to have a factor structure. Kneip et al. (2012) considers the case in which the time varying common factors have relatively smooth patterns including strongly positive auto-correlated stationary as well as non-stationary factors, whereas the method of Bai (2009) focuses on stochastic bounded factors such as ARMA processes. Additionally, the phtt package provides a wide range of dimensionality criteria in order to estimate the number of the unobserved factors simultaneously with the remaining model parameters.
Effective Bounds on the Podelski-Rybalchenko Termination Theorem

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The Impact of Impoundment on Downstream Macroinvertebrate Communities at Koga Irrigation Dam, West Gojam, Ethiopia

Despite its vital importance, river regulation affects downstream lotic environment and aquatic fauna. In this study, downstream effects of reservoir were evaluated using macro invertebrate bio-assessment techniques. Macro invertebrates community structure and physicochemical parameters were assessed at upstream and downstream sites relating to dam impact. Samples from four sites were collected using standard dip-net (500-μm mesh size) and identified to family level. Rapid Bio-assessment Protocol-II metrics and scoring criteria was used to quantify changes in macro invertebrate community structure and water quality. Downstream of reservoir; total abundance, Chironomidae abundance and Hilsenhoff Biotic Index values increased. However, richness, Ephemeroptera Plecoptera and Trichoptera taxa and Ephemeroptera abundance decreased. Trichoptera were absent from reservoir and downstream sites, but the number of gatherers and filter-feeder individuals were higher than reaches above the reservoir. Physicochemical parameters were significantly different (p < 0. 05) among sites except temperature. A post-hoc test for Shannon Diversity Index indicated a significant difference (p < 0. 05) between Site 1 and Site 4. Habitat and water quality changes have disrupted downstream continuum of macro-invertebrate communities. Generally, impoundments have profound impacts on macro invertebrates within reservoir and below it as indicated by this study; therefore, needs an appropriate conservation measures.
Major Delay Factors for Construction Projects in Nigeria

Twenty three studies to identify major delay factors for construction projects in Nigeria have been reported in the literature. All these studies are based on self-administered questionnaire survey of views and perception of project participants except one study which is based on actual construction projects. Almost all of the more than forty construction delay factors reported in the literature have been identified as one of the major construction delay factors by one of the twenty three studies. Obviously, this cannot be true and is confusing to practitioners in prioritizing appropriate remedial measures to achieve better schedule performance. A thorough review of these twenty three studies is undertaken to identify major construction delay factors for Nigeria so that appropriate management measures can be implemented to achieve better schedule performance. The methodology is to count the number of times each major construction delay factors has been identified by the twenty three studies. The top major construction delay factors are factors identified by the most number of studies. Major construction delay factors identified include: “finance and payments of completed work by owner”, “late delivery/shortage of construction materials or fuel”, “ineffective planning and scheduling”, “variation orders/changes of scope by owner during construction”, “late issuance of instructions, information or drawings/incomplete drawings/inadequate information/delay in revising design documents and approving works or materials/delays in design work/delay due to progress payment evaluation and issuance of certificate by quantity surveyor”, “equipment (or operator) availability and failure”, “poor site management and supervision”, “mistakes and discrepancies in design documents by consultant”, “communication problems/lack of adequate project coordination”, “slow decisions from owner”, “inadequate contractor experience/incompetence contractor”, “financing by contractor”, and “subcontractor problems”. With respect to the construction delay factors identified, measures to improve the schedule performance of construction projects in Nigeria are presented.
Mining Frequent Patterns of Crime using FP-Growth with Multiple Minimum Supports based on Shannon Entropy

FP-Growth is one of the most effective and widely used association rules mining algorithm for discovering interesting relations between items in large datasets. Unfortunately, classical FP-Growth mines frequent patterns by using single user-defined minimum support threshold. This is not adequate for real life applications such as crime patterns mining. On one side, if minimum support is set too low, huge amount of crime patterns (including uninteresting patterns) may be generated, and on the other side, if it is set too high lots of interesting patterns (including seasonal patterns) may be lost. This paper proposes the use of Multiple Item Support (MIS) thresholds instead of single minimum support to tackle the challenge. We employ Shannon entropy method to develop an algorithm that obtains MIS values from crime datasets. The proposed approach is tested on different sizes of input data via a developed working prototype. Experimental results show that our suggested approach outperforms classical FP-Growth in terms of running time and memory use.
Öğretmen Adaylarının Matematiğe ve Matematik Öğretimine İlişkin Tutumları

Ogretmenlerin ve ozellikle ogretmen adaylarinin matematik ogretimine iliskin tutumlarinin ogrencilerin matematige iliskin olumlu tutum gelistirmeleri uzerindeki etkisi sebebiyle ogretmenlerin ve ogretmen adaylarinin matematige iliskin tutumlari kadar matematik ogretimine iliskin tutumlari da onem arz etmektedir. Ayrica ogretmenlik mesleginin basinda bulunan ogretmen adaylarinin tutumlari meslegin gelecek yillarinda olusacak tutumlari acisindan da onemlidir. Bu calismanin amaci ogretmen adaylarinin matematige ve matematik ogretimine iliskin tutumlarini belirlemektir. Calismada veri toplama araci “Matematik Ogretimi” baslikli olcme araci kullanilmistir. Okuloncesi ve sinif ogretmeni adaylarinin matematige iliskin tutumlarinin ve matematik ogretimine iliskin tutumlarinin program, cinsiyet ve yas degiskenlerine gore farklilasmasini inceleyebilmek icin toplam 254 ogretmen adayindan veri toplanmistir. Sonuclara gore sinif ogretmeni adaylarinin matematige iliskin tutumlari daha yuksek cikarken, matematik ogretimine iliskin tutumlarinda farklilik cikmamistir. Diger taraftan erkek ogretmen adaylarinin hem matematige hemde matematik ogretimine iliskin tutumlari kiz ogretmen adaylarindan daha yuksek cikmistir. Calisma sonucunda elde edilen bulgular isiginda oneriler sunulmustur.
INFLUENCE OF AYURVEDIC ANTIDIABETIC AGENT ON THE PHARMACODYNAMICS OF GLIMEPIRIDE

The present study is planned to explore the influence of ayurvedic antidibetic drug Madhumehari on the pharmacodynamics of glimepiride. Wistar albino rats of either sex were induced diabetes with alloxan and were used. The study was done in two phases, acute phase and chronic phase. In acute phase the diabetic rats were divided into six groups each consisting of 6. The diabetic control (Group-I) was treated with 0.5%W/V CMC suspension orally. To the diabetic group II, III and IV glimepiride 4mg/kg body wt, madhumehari 100mg/kg body wt. and madhumehari 200mg/kg body wt. were administered orally respectively. Groups V and VI were given orally the combination of glimepiride 4mg/kg body wt + madhumehari 100mg/kg body wt and glimepiride 4mg/kg body wt + madhumehari 200mg/kg body wt. In chronic study the protocol was similar to that of acute study but treatment was given for 7 days. Blood samples were collected from retro orbital plexus at predetermined time intervals for serum glucose level estimation after the oral dosing of glimepiride. The combination of glimepiride + madhumehari has shown antidiabetic activity at 3 rd hour. Glimepiride when administered along with madhumehari 100 & 200mg orally the fall in serum glucose level was found to be more significant when compared with the per se treatment of glimepiride, madhumehari 100 & 200mg in both acute and chronic studies. From the above study it may be concluded that there is additive type of Pharmacodynamic interaction is possible between glimepiride and madhumehari.
Preparation of Low Molecular Weight Natural Polymers by gamma-Radiation and Their Growth Promoting Effect on Zea Maize Plants

Preparation of oligosaccharides from chitosan and Na-alginate were done using ? -rays and H 2 O 2 as oxidizing agent. Structural and molecular weight changes of such oligosaccharides were determined by GPC, FT-IR and UV-Vis. spectroscopy. FT-IR and UV-Vis. studies revealed that during radiation degradation process, the main polysaccharide chain structure was almost remained. The effects of spraying 100 ppm of oligochitosan or oligoalginate or both of them with different ratios on the growth of zea maize plants showed an enhancement of plant growth performance and the productivity at the same time suggesting their possible use in agriculture purposes as growth promoters for plants.