A Method for Solving a Class of Multiple-Criteria Analysis Problems

AMS subject classification: 90C29.

Co-constructed caring research and intellectual disability:an exploration of friendship, intimacy and being human

For this paper, emotional and socio-political questions lie at the heart of relationships in understanding intellectual disability and what it is to be a human. While the sexual and intimate is more often than not based on a private and personal relationship with the self and (an)other, the sexual and intimate life of intellectually disabled people is more often a ‘public’ affair governed by parents and/or carers, destabilizing what we might consider ethical and caring practices. In the socio-political sphere, as an all-encompassing ‘care space’, social intolerance and aversion to difficult differences are played out, impacting upon the intimate lives of intellectually disabled people. As co-researchers (one intellectually disabled and one ‘non-disabled’), we discuss narratives from a small scale research project and our personal reflections. In sociological research and more specifically within disability research it is clear that we need to keep sex and intimacy on the agenda, yet also find ways of doing research in a meaningful, caring and co-constructed way.

Analysis of clogging in constructed wetlands using magnetic resonance

In this work we demonstrate the potential of permanent magnet based magnetic resonance sensors to monitor and assess the extent of pore clogging in water filtration systems. The performance of the sensor was tested on artificially clogged gravel substrates and on gravel bed samples from constructed wetlands used to treat wastewater. Data indicate that the spin lattice relaxation time is linearly related to the hydraulic conductivity in such systems. In addition, within biologically active filters we demonstrate the ability to determine the relative ratio of biomass to abiotic solids, a measurement which is not possible using alternative techniques. © 2011 The Royal Society of Chemistry.

A finite element approach to modelling the hydrological regime in horizontal subsurface flow constructed wetlands for wastewater treatment

A Finite Element Analysis (FEA) model is used to explore the relationship between clogging and hydraulics that occurs in Horizontal Subsurface Flow Treatment Wetlands (HSSF TWs) in the United Kingdom (UK). Clogging is assumed to be caused by particle transport and an existing single collector efficiency model is implemented to describe this behaviour. The flow model was validated against HSSF TW survey results obtained from the literature. The model successfully simulated the influence of overland flow on hydrodynamics, and the interaction between vertical flow through the low permeability surface layer and the horizontal flow of the saturated water table. The clogging model described the development of clogging within the system but under-predicted the extent of clogging which occurred over 15 years. This is because important clogging mechanisms were not considered by the model, such as biomass growth and vegetation establishment. The model showed the usefulness of FEA for linking hydraulic and clogging phenomenon in HSSF TWs and could be extended to include treatment processes. © 2011 Springer Science+Business Media B.V.

Why (and When) are Preferences Convex? Threshold Effects and Uncertain Quality

It is often assumed (for analytical convenience, but also in accordance with common intuition) that consumer preferences are convex. In this paper, we consider circumstances under which such preferences are (or are not) optimal. In particular, we investigate a setting in which goods possess some hidden quality with known distribution, and the consumer chooses a bundle of goods that maximizes the probability that he receives some threshold level of this quality. We show that if the threshold is small relative to consumption levels, preferences will tend to be convex; whereas the opposite holds if the threshold is large. Our theory helps explain a broad spectrum of economic behavior (including, in particular, certain common commercial advertising strategies), suggesting that sensitivity to information about thresholds is deeply rooted in human psychology.

Tax morale and tax evasion: Social preferences and bounded rationality

We study a family of models of tax evasion, where a flat-rate tax finances only the provision of public goods, neglecting audits and wage differences. We focus on the comparison of two modeling approaches. The first is based on optimizing agents, who are endowed with social preferences, their utility being the sum of private consumption and moral utility. The second approach involves agents acting according to simple heuristics. We find that while we encounter the traditionally shaped Laffer-curve in the optimizing model, the heuristics models exhibit (linearly) increasing Laffercurves. This difference is related to a peculiar type of behavior emerging within the heuristics based approach: a number of agents lurk in a moral state of limbo, alternating between altruism and selfishness.

Adómorál és adócsalás - társadalmi preferenciák és korlátozott racionalitás = Tax morale and tax system: social preferences and bounded rationality

Az adócsalásnak egy olyan modellcsaládját vizsgáljuk, ahol az egykulcsos adó kizárólag a közjavakat finanszírozza. Két megközelítés összehasonlítására összpontosítunk. Az elsőben minden dolgozó jövedelme azonos, és ebből minden évben annyit vall be, amennyi maximalizálja a nála maradó jövedelemből fedezhető fogyasztás nyújtotta hasznosság és a jövedelembevallásból fakadó hasznosság összegét. A második hasznosság három tényező szorzata: a dolgozó exogén adómorálja, a környezetében előző évben megfigyelt átlagos jövedelembevallás és saját bevallásából fakadó endogén hasznossága. A második megközelítésben az ágensek egyszerű heurisztikus szabályok szerint cselekszenek. Míg az optimalizáló modellben hagyományos Laffer-görbékkel találkozunk, addig a heurisztikán alapuló modellekben (lineárisan) növekvő Laffer-görbék jönnek létre. E különbség oka, hogy a heurisztikán alapuló modellben egy sajátos viselkedésfajta jelentkezik: számos ágens ingatag helyzetbe kerül, amelyben altruizmus és önzés között ingadozik. ________ The authors study a family of models of tax evasion, where a flat-rate tax only finances the provision of public goods and audits and wage differences are ne-glected. The paper focuses on comparing two modelling approaches. The first is based on optimizing agents, endowed with social preferences, their utility being the sum of private consumption and moral utility. The second approach involves agents acting according to simple heuristics. While the traditionally shaped Laffer curves are encountered in the optimizing model, the heuristics models exhibit (linearly) increasing Laffer curves. This difference is related to a peculiar type of behaviour: within the agent-based approach lurk a number of agents in a moral state of limbo, alternating between altruism and selfishness.

Preferences of Hungarian consumers for quality, access and price attributes of health care services — result of a discrete choice experiment

In 2010, a household survey was carried out in Hungary among 1037 respondents to study consumer preferences and willingness to pay for health care services. In this paper, we use the data from the discrete choice experiments included in the survey, to elicit the preferences of health care consumers about the choice of health care providers. Regression analysis is used to estimate the effect of the improvement of service attributes (quality, access, and price) on patients’ choice, as well as the differences among the socio-demographic groups. We also estimate the marginal willingness to pay for the improvement in attribute levels by calculating marginal rates of substitution. The results show that respondents from a village or the capital, with low education and bad health status are more driven by the changes in the price attribute when choosing between health care providers. Respondents value the good skills and reputation of the physician and the attitude of the personnel most, followed by modern equipment and maintenance of the office/hospital. Access attributes (travelling and waiting time) are less important. The method of discrete choice experiment is useful to reveal patients’ preferences, and might support the development of an evidence-based and sustainable health policy on patient payments.

Az IKT-eszközökkel kapcsolatos preferenciák és használatuk előrejelzése (Preferences and usage forecast of ICT tools)

A szerzők ebben a tanulmányukban az információs és kommunikációs technológiai (továbbiakban IKT) eszközök közül az asztali számítógépekkel (desktopok), laptopokkal (notebookok és netbookok), táblagépekkel és okostelefonokkal foglalkoznak. Az IKT-eszközök elterjedtségének vizsgálatánál meghatározó szerepet játszik a technológia jelenléte mellett a társadalom befogadóképessége. A technológia és társadalom kapcsolatát különböző módszerekkel és modellekkel mutatják be, melyek indokolják ezen eszközök növekvő használatának szükségességét. Ebben a tanulmányban a modellekből és a felmérésekből összeállított tényezők beépítésével és az általuk feldolgozott kérdőívek elemzése által kirajzolódnak minták és olyan összefüggések, amelyek magyarázatot adhatnak a különböző eszközhasználat okainak megértésére. _____ In their study the authors deal with the desktop computers (Desktop), laptops (notebooks and netbooks), smartphones and tablet machines among of information and communication technology (hereinafter referred to as ICT) tools. The capacity of society is one of the key elements in the examination of spread of ICT. The relationship between technology and society is presented with different methods and models that are justified by the need for increasing the use of these devices. In this paper such samples and correlations are emerged of the models and surveys, which may explain the reasons for understanding of the different tool use.

Munkavállalói preferenciák az egyetemi hallgatók körében = Employees' preferences according to graduates and undergraduates

Napjaink munkaerőpiaci tendenciái következtében egyre több figyelem irányul az atipikus munkavégzésre. Az atipikus munkavégzésben rejlő lehetőségeket a munkavállalók oldaláról vizsgáltuk. Ennek érdekében egy kétfázisú kutatássorozatot hajtottuk végre a Budapesti Corvinus Egyetem hallgatói körében. A felmérés rámutatott arra, hogy az egyetemi hallgatók már az egyetemi tanulmányaik alatt is potenciális munkaerőt jelentenek. Foglalkoztatásuk során a legfontosabb tényező a rugalmas, tanulmányokkal összeegyeztethető munkavégzés. A második kutatás fő célja a teljes életcikluson keresztüli munkavállalói preferenciák feltárása volt. A hallgatók által a két leginkább előnybe részesített munkavállalási forma a napi nyolcórás munkaviszony rugalmas munkaidőben és a saját vállalkozás indítása. A hallgatók elsősorban magas jövedelmet, ezt követően stabil, biztos jövedelmet, fejlődési lehetőséget, és a munka és magánélet egyensúlyát várják el munkahelyüktől. A tanulmány rámutat az egyes alcsoportok különbségeire, illetve kiindulópontot jelenthet további kutatásokhoz. _____ More and more attention is paid to atypical work due to workplace trends. Increasing opportunities deriving from atypical work have been investigated from employees’ viewpoint in this paper. We conducted a two-step survey amongst graduates and undergraduates of Corvinus University of Budapest. The survey pointed out that undergraduates are potential workers as well, and the most important factor for them was the flexible form of work. The second survey aimed to explore employees’ preferences through a whole lifetime period. The two most popular forms of work were flexible full-time jobs and starting their own enterprise. Students prefer high salaries, a stable and secure income, opportunities for development and work-life balance. The surveys pointed out some differences between subgroups and their conclusions could be a starting point for future research.

A qualitative analysis of the congruency of Jungian psychological preferences identified by the Myers-Briggs Type Indicator (MBTI) and the human resource development role of instructor/facilitator

The purpose of this ethnographic study was to describe and explain the congruency of psychological preferences identified by the Myers-Briggs Type Indicator (MBTI) and the human resource development (HRD) role of instructor/facilitator. This investigation was conducted with 23 HRD professionals who worked in the Miami, Florida area as instructors/facilitators with adult learners in job-related contexts.^ The study was conducted using qualitative strategies of data collection and analysis. The research participants were selected through a purposive sampling strategy. Data collection strategies included: (a) administration and scoring of the MBTI, Form G, (b) open-ended and semi-structured interviews, (c) participant observations of the research subjects at their respective work sites and while conducting training sessions, (d) field notes, and (e) contact summary sheets to record field research encounters. Data analysis was conducted with the use of a computer program for qualitative analysis called FolioViews 3.1 for Windows. This included: (a) coding of transcribed interviews and field notes, (b) theme analysis, (c) memoing, and (d) cross-case analysis.^ The three major themes that emerged in relation to the congruency of psychological preferences and the role of instructor/facilitator were: (1) designing and preparing instruction/facilitation, (2) conducting training and managing group process, and (3) interpersonal relations and perspectives among instructors/facilitators.^ The first two themes were analyzed through the combination of the four Jungian personality functions. These combinations are: sensing-thinking (ST), sensing-feeling (SF), intuition-thinking (NT), and intuition-feeling (NF). The third theme was analyzed through the combination of the attitudes or energy focus and the judgment function. These combinations are: extraversion-thinking (ET), extraversion-feeling (EF), introversion-thinking (IT), and introversion-feeling (IF).^ A last area uncovered by this ethnographic study was the influence exerted by a training and development culture on the instructor/facilitator role. This professional culture is described and explained in terms of the shared values and expectations reported by the study respondents. ^

Local officials' preferences of performance measurements: A study of local police services

The purpose of this study is to identify the determinants of local officials' preferences of performance measures under the assumption that public officials' consensus on performance measures can enhance the accountability in public service delivery. This research consists of two steps: multiple case studies and a survey. The author conducted the case studies in five general-purpose municipalities in Florida, interviewing 25 local officials, attending community meetings, and reviewing relevant local documents. Based on the case studies and the relevant literature, a survey was developed and sent to 445 local officials in 67 general-purpose municipalities in Dade, Broward, and Palm Beach Counties, Florida. The findings of the case studies and the survey suggest that local officials' preferences of performance measures are influenced by their perception of utilities of performance measures and their desire to measure the achievement of organizational goals. The author concludes that a consensus among local officials for outcome-oriented performance measures is easier to achieve if a prospective performance measurement system is designed for reporting and management purposes rather than for budgeting purposes. ^

Taiwanese faculty and administrators' perceptions and preferences toward shared governance

This study investigated the perceptions, attitudes, preferences, and actual reported degree of faculty participation in decision-making in Taiwanese universities. It was aimed at exploring possible agreements and disagreements between the faculty and administrators concerning these perceptions, and between the actual and preferred degree of faculty participation in both groups. ^ Seven questions were addressed in this study: (a) What are the most and the least reported areas of faculty involvement in decision making? (b) What are the most and the least preferred areas of faculty involvement in decision-making? (c) Is there a difference between faculty and administrators' reports of faculty involvement in decision-making? (d) Is there a difference between faculty and administrators in their preference for faculty involvement in decision-making? (e) Among the faculty, is reported involvement different from preferred involvement in decision-making? (f) Among the administrators, is their reported faculty involvement different from their preferred faculty involvement? and (g) Do faculty and administrators hold different attitudes toward faculty participation in decision-making? ^ The results indicated that: (a) Faculty had the highest level of involvement in academic decisions, and had the lowest level of involvement in developing general policies. (b) Both faculty and administrators had the highest preference for faculty involvement in academic decisions, and both of them had the lowest preference for faculty involvement in general policies. (c) Administrators reported a level of involvement for the faculty that was higher than the level that the faculty themselves reported. (d) Faculty desired a higher level of involvement than they currently have, and administrators also agreed that faculty should have greater involvement. ^ The interview results indicated that the presidents believed that faculty should participate in decision-making, but they also had negative feelings towards faculty who were enthusiastic about participating. The presidents showed their support of faculty participation in academic decisions, but not in other areas. ^ The results reflected the traditional Taiwanese social expectations of the role of faculty. When the range of decisions was narrowed to the academic context, the disagreements between the faculty, administrators, and university presidents disappeared. However, when the range of decisions was expanded, the agreement declined. ^

Tracking rates of ecotone migration due to salt-water encroachment using fossil mollusks in coastal South Florida

We determined the rate of migration of coastal vegetation zones in response to salt-water encroachment through paleoecological analysis of mollusks in 36 sediment cores taken along transects perpendicular to the coast in a 5.5 km2 band of coastal wetlands in southeast Florida. Five vegetation zones, separated by distinct ecotones, included freshwater swamp forest, freshwater marsh, and dwarf, transitional and fringing mangrove forest. Vegetation composition, soil depth and organic matter content, porewater salinity and the contemporary mollusk community were determined at 226 sites to establish the salinity preferences of the mollusk fauna. Calibration models allowed accurate inference of salinity and vegetation type from fossil mollusk assemblages in chronologically calibrated sediments. Most sediments were shallow (20–130 cm) permitting coarse-scale temporal inferences for three zones: an upper peat layer (zone 1) representing the last 30–70 years, a mixed peat-marl layer (zone 2) representing the previous ca. 150–250 years and a basal section (zone 3) of ranging from 310 to 2990 YBP. Modern peat accretion rates averaged 3.1 mm yr)1 while subsurface marl accreted more slowly at 0.8 mm yr)1. Salinity and vegetation type for zone 1 show a steep gradient with freshwater communities being confined west of a north–south drainage canal constructed in 1960. Inferences for zone 2 (pre-drainage) suggest that freshwater marshes and associated forest units covered 90% of the area, with mangrove forests only present along the peripheral coastline. During the entire pre-drainage history, salinity in the entire area was maintained below a mean of 2 ppt and only small pockets of mangroves were present; currently, salinity averages 13.2 ppt and mangroves occupy 95% of the wetland. Over 3 km2 of freshwater wetland vegetation type have been lost from this basin due to salt-water encroachment, estimated from the mollusk-inferred migration rate of freshwater vegetation of 3.1 m yr)1 for the last 70 years (compared to 0.14 m yr)1 for the pre-drainage period). This rapid rate of encroachment is driven by sea-level rise and freshwater diversion. Plans for rehydrating these basins with freshwater will require high-magnitude re-diversion to counteract locally high rates of sea-level rise.