Search results for "Retention"

Good Practices for Ensuring Access and Equity in Higher Education

2017

The dropout problem in University Study

2014

Resumen tomado de la publicación Título, resumen y palabras clave en español e inglés Disponible la versión en inglés Se analiza el fenómeno problemático del abandono de los estudios universitarios, que alcanza hasta el 50 por ciento en algunas titulaciones. Para ello, se parte de la presentación y análisis de los porcentajes de abandono de distintas universidades españolas. Posteriormente, al amparo de distintos estudios nacionales e internacionales, y resultados de investigación propios, se elabora un perfil teórico que contempla: definición, causas, modelos explicativos y soluciones. Finalmente, se ofrece una perspectiva crítica de la enseñanza universitaria, en relación al papel social …

Genetics of familial hypobetalipoproteinemia

2007

Primary hypobetalipoproteinemias include three monogenic disorders: the relatively frequent codominant familial hypobetalipoproteinemia (FHBL), the rare recessive conditions abetalipoproteinemia (ABL) and chylomicron retention disease (CMRD). Approximately 50% of FHBL patients are carriers of mutations in the APOB gene, mostly causing the formation of truncated forms of ApoB. In some kindred, FHBL is linked to a locus on chromosome 3 (3p21), but the candidate gene is still unknown. Recently, a FHBL-like phenotype was observed in carriers of mutations of the proprotein convertase subtilisin/kexin type 9 (PCSK9) gene causing loss-of-function of the encoded protein, a proprotein convertase tha…

Digital Education For All: Multi-University Study of Increasing Competent Student Admissions at Scale

2022

An indubitable way to put learning at scale in practice is to implement Massive Open Online Courses, or MOOCs. When a wide-enough portfolio of them is available, new applications arise. For instance, university admissions in Finland, where this study was conducted, have traditionally been based on students' grades in high school studies, an entrance examination, or a combination of both. A minority of students have been accepted through an open university admission path where students can get a study right if they complete enough university course credits with a high enough grade in a given time frame. In this work, we report results from a multi-university project in which the open univers…

RELATIONSHIP MARKETING - A CLIENT RELATIONSHIP LIFECYCLE PERSPECTIVE - THEORETICAL CONSIDERATIONS ON THE CLIENT ACQUISITION AND RETENTION PHASE

2015

The purpose of this paper is to review conceptually the first two phases of the client relationship lifecycle. In this regard, the author has structured the paper in two parts, the first one describing the client acquisition phase, and the second one the client retention phase. Thus, the client acquisition phase describes the actions undertaken by both the client and the company for starting an exchange relationship. Client retention is defined by using different theoretical surrogates (e.g. loyalty, rebuying behaviour), and determinants (e.g. satisfaction, social effects, anticipated regret of future use). Moreover, the dynamic character of this phase is taken in consideration by presentin…

Knowledge Retention within Small and Mediumsized Enterprises

2019

Abstract In the constantly changing nowadays economy, all organizations have to be prepared to embrace all technological innovation and become good competitors in the market place all over the world. This need puts a special emphasize on the ability of a company to evolve through employee ability to grow professional. The retention of good, qualified employee is a complex process, because of the importance of the knowledge for the financial efficiency of a company. This article aims is to examine knowledge retention as an advantage of companies in this era of information, an era in which organizations view their employees as the main sources of competitive edge, acknowledging, at the same t…

Testing the shape-similarity hypothesis between particle-size distribution and water retention for Sicilian soils

2012

Application of the Arya and Paris (AP) model to estimate the soil water retention curve requires a detailed description of the particlesize distribution (PSD) but limited experimental PSD data are generally determined by the conventional sieve-hydrometer (SH) method. Detailed PSDs can be obtained by fitting a continuous model to SH data or performing measurements by the laser diffraction (LD) method. The AP model was applied to 40 Sicilian soils for which the PSD was measured by both the SH and LD methods. The scale factor was set equal to 1.38 (procedure AP1) or estimated by a logistical model with parameters gathered from literature (procedure AP2). For both SH and LD data, procedure AP2 …

Analysis of Biomass Characteristics in MBR and MB-MBR Systems Fed with Synthetic Wastewater: Influence of a Gradual Salinity Increase

2014

The paper presents the results of a field gathering campaign carried out on two different pilot scale membrane bioreactor (MBR) systems, treating synthetic wastewater subject to a gradual increase of salinity. One was a conventional MBR system, while the other was a moving bed biofilm membrane bioreactor (MB-MBR), which combines suspended biomass and biofilm. Indeed, the presence of suspended carriers inside the bioreactor seems to give benefits due to the collisions between the circulating media and the membrane. The aim of the study was the comparison of two configurations in terms of biomass activity characterization and performance (pollutants removal and hydraulic behaviour). The resul…

Yielding of a quartz sand from saturated to dry state

2020

The paper presents the results of an experimental work where we analyse the behaviour of an unsaturated quartz sand in a wide range of degree of saturation (from saturated to dry state). The possibility of anticipating the hydro-mechanical behaviour of the soils when they approach the dry state is fundamental in many areas. An extensive experimental program, including controlled-suction and constant water content oedometric tests, was carried out to deeply analyse the water retention behaviour and the relationship between the yield stress and suction (Loading-Collapse curve). All elasto-plastic models provide a monotonically increase of the yield stress with suction. This assumption implies…

Suction controlled drying and wetting cycle effects on the volumetric behaviour of a lime-treated high plasticity clay

2016

The paper presents some experimental results collected on samples recovered from an experimental embankment obtained by compacting a lime-treated clay. Samples were collected soon after the in situ compaction and they were cured in controlled environmental conditions for at least 18 months. Mercury intrusion porosimetry tests (MIP) were carried out on freeze-dried specimens to characterize the microstructure of the material. In order to assess the durability of the improved material, laboratory tests focused on the effects of cyclic variations of the degree of saturation on the water retention properties and the volumetric behaviour of the stabilized clay. Collected results show that the li…