Tavoitteena kielitaidon monipuolistaminen Suomessa. Opettajien näkemyksiä mahdollisuuksista monipuolistaa oppilaiden kielivalintoja

Tässä tutkimuksessa tarkastellaan rehtoreiden ja opettajien käyttämiä vapaavalintaisten kielten opiskelun edistämisen keinoja ja sitä, millaisiksi opettajat kokevat mahdollisuutensa vaikuttaa kielten opiskeluun. Lisäksi tutkitaan opettajien näkemyksiä parhaista mahdollisista tavoista edistää oppilaiden kielivalintojen monipuolisuutta. Suomessa on koko itsenäisyyden ajan panostettu monipuoliseen kielitaitoon, ja vielä 1970-luvulla Suomi oli kieliohjelmapolitiikan saralla edelläkävijämaa. Vuosikymmenien saatossa vieraiden kielten monipuolinen osaaminen on heikentynyt ja nykyään oppilaat opiskelevat pääasiassa vain kahta pakollista kieltä. Lähes kaikki opiskelevat ensimmäisenä vieraana kielenä englantia ja kaikki toista kotimaista kieltä. Vaikka kaikki suomalaiset opiskelevat kahta kieltä äidinkielen lisäksi, ainoastaan 75 % suomalaisista kokee pystyvänsä kommunikoimaan jollain muulla kielellä kuin äidinkielellään. Viime vuosikymmeninä yksipuolistuvaan vieraiden kielten osaamiseen on kiinnitetty erityistä huomiota ja on tehty erilaisia hankkeita kielitaidon monipuolistamiseksi, muun muassa KIMMOKE ja Kielitivoli. Hankkeiden tavoitteiden täyttyminen on ollut kuitenkin toivottua heikompaa. Tutkimusaineistona on 37 peruskoulun ja 34 lukion rehtorin sekä 20 kieltenopettajan kyselylomakeaineisto. Lisäksi haastateltiin neljää opettajaa. Tutkimuksessa selvisi, että pääasiassa käytetään kielten opetuksen käytännön toteutukseen liittyviä edistämisen keinoja. Peruskoulut ja lukiot eroavat toisistaan jonkin verran. Erilaisia monipuolistamisen keinoja on olemassa ja niitä käytetään moni tavoin, Opettajat kokivat kuitenkin, että heidän mahdollisuutensa vaikuttaa kielten opiskelun monipuolistamiseen ovat melko heikot. Toisaalta opettajan oma innostunut esimerkki, kielten markkinointi sekä mielekäs ja laadukas opetus koettiin parhaimmiksi tavoiksi edistää vieraiden kielten opiskelua. Näitä keinoja jokaisen opettajan on helppo toteuttaa omassa arjessaan. Kielten opiskelun monipuolistamisen suurimpina esteinä ja ongelmina nähtiin erityisesti resurssipula ja eri tahojen negatiiviset asenteet. Kielten opiskelun monipuolistaminen on tärkeää eikä siihen päästä pelkästään valinnaista kielten opiskelua lisäämällä. Monipuolinen kielitaito on sekä yksilön että yhteisön kannalta välttämätöntä, koska kielitaito on avain kommunikointiin.

Luokanopettajien käsitykset ammatillisen kehittymisen tarpeesta ja työyhteisöstä sen tukena

Tutkimuksessa selvitetään luokanopettajien käsityksiä ammatillisen kehittymisen tarpeesta ja työyhteisöstä kehittymisen tukena. Teemaa tarkastellaan kolmesta näkökulmasta. Ensin keskitytään tekijöihin, jotka saavat luokanopettajan tavoittelemaan ammatillista kehittymistä. Toiseksi tutkitaan, millainen työyhteisö luokanopettajien mielestä edistää tai estää ammatillista kehittymistä. Kolmanneksi selvitetään, miten arjen vuorovaikutustilanteet työpaikalla tukevat urallaan eri vaiheissa olevien luokanopettajien ammatillista kehittymistä. Tutkimusmenetelmänä käytettiin puolistrukturoitua teemahaastattelua. Tutkimusta varten haastateltiin seitsemää varsinaissuomalaista luokanopettajaa. Haastateltavat valittiin Berlinerin opettajan ammatilliseen kehityskaarimalliin perustuen. Tässä tutkimuksessa opettajat on jaoteltu opetusvuosien määrän mukaan noviiseihin ja ammattilaisiin. Haastatelluista kolme on noviiseja ja neljä ammattilaisuusvaiheessa olevia. Tutkittavien työkokemuksen pituus vaihtelee yhden kuukauden ja kuudentoista vuoden välillä. Tämän tutkimuksen mukaan luokanopettajien kokemiin ammatillisiin kehittymis-tarpeisiin vaikuttavat heidän omat koulukokemuksensa ja elämäntilanteensa. Lisäksi tavoitteiden asettamiseen vaikuttaa se, minkälaiset arjen vuorovaikutustilanteet koetaan haasteellisiksi. Ammatillista kehittymistä edistävän työyhteisön kantavina voimina ovat aktiivinen ja vastuunsa kantava rehtori sekä opettajanhuone, jossa vallitsee avoin ja hyväksyvä ilmapiiri. Arjen vuorovaikutustilanteissa ammattilaisuusvaiheessa olevien opettajien vahvuuksina nähtiin hyvät luokan- ja aineenhallinta-taidot, oppilaan kohtaamisen luontevuus ja itsevarmuus. Toisaalta taas he saattavat olla työssään rutinoituneita eikä oman toiminnan tietoista reflektointia pidetä tärkeänä. Noviisiopettajien vahvuuksia olivat tarmokkuus, uudet ideat ja rohkeus kokeilla erilaisia työtapoja. He kuitenkin kaipaavat uransa alkuvaiheessa tukea opettajuuteensa, koska kokonaisuuden näkeminen on vielä vaikeaa. Tämä tutkimus osoittaa, että opettajat suhtautuvat ajatuksen tasolla yhteistyöhön myönteisesti, ja tiedostavat sen mahdollisuudet. Käytännön tasolla yhteistyön toteuttaminen jää kuitenkin monella vähäiseksi. Haasteena on saada kaikki opettajat sitoutumaan ajatukseen siitä, että oppiminen on elinikäinen prosessi.

Ohjaava opetustyyli – opetushenkilöstön käsityksiä ja kokemuksia

Tutkielman aiheena oli selvittää, millaisia käsityksiä opetushenkilöstöllä on ohjaavasta opetustyylistä: Mitä ohjaavalla opetuksella tavoitellaan, millaisia toimintatapoja opetus sisältää ja millaisia haasteita opetushenkilöstö arjessa kohtaa. Alun teoreettisessa osuudessa kuvataan kolmen ohjaavan opetustyylin mallia: Feuersteinin ohjattu oppimiskokemus (Mediated Learning Experience), ohjaava opetuskeskustelu eli scaffolding ja dynaaminen arviointi. Keskeistä näissä malleissa on, että oppija nähdään tiedon aktiivisena prosessoijana, oppiminen tapahtuu taitavamman ohjauksessa ja tavoitteena oppimisessa on oppijan ajattelutaitojen ja oppimisprosessien kehittyminen. Tutkielma on laadullinen, fenomenografinen, tutkimus. Tutkielman aineisto koostui kahdeksan henkilön haastattelusta Uudenmaan opetusyksiköistä. Heistä viisi oli työssä peruskoulun ala- tai yläluokilla ja kolme ammatillisessa peruskoulutuksessa. Haastateltavat olivat työssä sekä yleis- että erityisopetuksessa. Tulokset osoittivat, että haastateltavat pitivät tärkeänä oppijan aktiivista roolia oppimisessa, itseohjautuvuuden kehittymistä ja positiivista näkemystä itsestä oppijana. Oppijan omaa ajattelua korostettiin, ja sen nähtiin kehittyvän taitavamman henkilön ohjauksessa. Tuloksissa näkyi, että haastateltavien käsitys oli ohjaavan opetustyylin mukainen, mutta ajattelutaitojen tietoista ja käsitteidenkäytön täsmällistä ohjaamista esiintyi haastateltavien puheessa melko vähän. Ajattelutaidot ja ongelmanratkaisutaidot ovat esimerkiksi peruskoulun uuden opetussuunnitelman (2014) yleisiä tavoitteita. Tämän tutkielman perusteella ohjaavan opetustyylin mukaista toimintamallia ja ajattelutapaa voisi kouluttamalla tuoda enemmän opetushenkilöstön tietoisuuteen ja toimintaan. Kyse ei ole pelkästään ajattelutaitojen ohjaamisen opettelusta, vaan myös näkökulman ja opettajan roolin muutoksesta sisällön tarjoajasta oppimisen ohjaamiseen.

Causal relationship between obesity and vitamin D status: bi-directional mendelian randomization analysis of multiple cohorts

BACKGROUND: Obesity is associated with vitamin D deficiency, and both are areas of active public health concern. We explored the causality and direction of the relationship between body mass index (BMI) and 25-hydroxyvitamin D [25(OH)D] using genetic markers as instrumental variables (IVs) in bi-directional Mendelian randomization (MR) analysis. METHODS AND FINDINGS: We used information from 21 adult cohorts (up to 42,024 participants) with 12 BMI-related SNPs (combined in an allelic score) to produce an instrument for BMI and four SNPs associated with 25(OH)D (combined in two allelic scores, separately for genes encoding its synthesis or metabolism) as an instrument for vitamin D. Regression estimates for the IVs (allele scores) were generated within-study and pooled by meta-analysis to generate summary effects. Associations between vitamin D scores and BMI were confirmed in the Genetic Investigation of Anthropometric Traits (GIANT) consortium (n = 123,864). Each 1 kg/m(2) higher BMI was associated with 1.15% lower 25(OH)D (p = 6.52×10⁻²⁷). The BMI allele score was associated both with BMI (p = 6.30×10⁻⁶²) and 25(OH)D (-0.06% [95% CI -0.10 to -0.02], p = 0.004) in the cohorts that underwent meta-analysis. The two vitamin D allele scores were strongly associated with 25(OH)D (p≤8.07×10⁻⁵⁷ for both scores) but not with BMI (synthesis score, p = 0.88; metabolism score, p = 0.08) in the meta-analysis. A 10% higher genetically instrumented BMI was associated with 4.2% lower 25(OH)D concentrations (IV ratio: -4.2 [95% CI -7.1 to -1.3], p = 0.005). No association was seen for genetically instrumented 25(OH)D with BMI, a finding that was confirmed using data from the GIANT consortium (p≥0.57 for both vitamin D scores). CONCLUSIONS: On the basis of a bi-directional genetic approach that limits confounding, our study suggests that a higher BMI leads to lower 25(OH)D, while any effects of lower 25(OH)D increasing BMI are likely to be small. Population level interventions to reduce BMI are expected to decrease the prevalence of vitamin D deficiency.

A genome-wide association meta-analysis identifies new childhood obesity loci

Multiple genetic variants have been associated with adult obesity and a few with severe obesity in childhood; however, less progress has been made in establishing genetic influences on common early-onset obesity. We performed a North American, Australian and European collaborative meta-analysis of 14 studies consisting of 5,530 cases (≥95th percentile of body mass index (BMI)) and 8,318 controls (<50th percentile of BMI) of European ancestry. Taking forward the eight newly discovered signals yielding association with P < 5 × 10(-6) in nine independent data sets (2,818 cases and 4,083 controls), we observed two loci that yielded genome-wide significant combined P values near OLFM4 at 13q14 (rs9568856; P = 1.82 × 10(-9); odds ratio (OR) = 1.22) and within HOXB5 at 17q21 (rs9299; P = 3.54 × 10(-9); OR = 1.14). Both loci continued to show association when two extreme childhood obesity cohorts were included (2,214 cases and 2,674 controls). These two loci also yielded directionally consistent associations in a previous meta-analysis of adult BMI(1).

Meta-analysis of the INSIG2 association with obesity including 74,345 individuals: does heterogeneity of estimates relate to study design?

The INSIG2 rs7566605 polymorphism was identified for obesity (BMI> or =30 kg/m(2)) in one of the first genome-wide association studies, but replications were inconsistent. We collected statistics from 34 studies (n = 74,345), including general population (GP) studies, population-based studies with subjects selected for conditions related to a better health status ('healthy population', HP), and obesity studies (OB). We tested five hypotheses to explore potential sources of heterogeneity. The meta-analysis of 27 studies on Caucasian adults (n = 66,213) combining the different study designs did not support overall association of the CC-genotype with obesity, yielding an odds ratio (OR) of 1.05 (p-value = 0.27). The I(2) measure of 41% (p-value = 0.015) indicated between-study heterogeneity. Restricting to GP studies resulted in a declined I(2) measure of 11% (p-value = 0.33) and an OR of 1.10 (p-value = 0.015). Regarding the five hypotheses, our data showed (a) some difference between GP and HP studies (p-value = 0.012) and (b) an association in extreme comparisons (BMI> or =32.5, 35.0, 37.5, 40.0 kg/m(2) versus BMI<25 kg/m(2)) yielding ORs of 1.16, 1.18, 1.22, or 1.27 (p-values 0.001 to 0.003), which was also underscored by significantly increased CC-genotype frequencies across BMI categories (10.4% to 12.5%, p-value for trend = 0.0002). We did not find evidence for differential ORs (c) among studies with higher than average obesity prevalence compared to lower, (d) among studies with BMI assessment after the year 2000 compared to those before, or (e) among studies from older populations compared to younger. Analysis of non-Caucasian adults (n = 4889) or children (n = 3243) yielded ORs of 1.01 (p-value = 0.94) or 1.15 (p-value = 0.22), respectively. There was no evidence for overall association of the rs7566605 polymorphism with obesity. Our data suggested an association with extreme degrees of obesity, and consequently heterogeneous effects from different study designs may mask an underlying association when unaccounted for. The importance of study design might be under-recognized in gene discovery and association replication so far.

Six new loci associated with body mass index highlight a neuronal influence on body weight regulation

Common variants at only two loci, FTO and MC4R, have been reproducibly associated with body mass index (BMI) in humans. To identify additional loci, we conducted meta-analysis of 15 genome-wide association studies for BMI (n > 32,000) and followed up top signals in 14 additional cohorts (n > 59,000). We strongly confirm FTO and MC4R and identify six additional loci (P < 5 x 10(-8)): TMEM18, KCTD15, GNPDA2, SH2B1, MTCH2 and NEGR1 (where a 45-kb deletion polymorphism is a candidate causal variant). Several of the likely causal genes are highly expressed or known to act in the central nervous system (CNS), emphasizing, as in rare monogenic forms of obesity, the role of the CNS in predisposition to obesity.

Interaction between allelic variations in vitamin D receptor and retinoid X receptor genes on metabolic traits

BACKGROUND: Low vitamin D status has been shown to be a risk factor for several metabolic traits such as obesity, diabetes and cardiovascular disease. The biological actions of 1, 25-dihydroxyvitamin D, are mediated through the vitamin D receptor (VDR), which heterodimerizes with retinoid X receptor, gamma (RXRG). Hence, we examined the potential interactions between the tagging polymorphisms in the VDR (22 tag SNPs) and RXRG (23 tag SNPs) genes on metabolic outcomes such as body mass index, waist circumference, waist-hip ratio (WHR), high- and low-density lipoprotein (LDL) cholesterols, serum triglycerides, systolic and diastolic blood pressures and glycated haemoglobin in the 1958 British Birth Cohort (1958BC, up to n = 5,231). We used Multifactor- dimensionality reduction (MDR) program as a non-parametric test to examine for potential interactions between the VDR and RXRG gene polymorphisms in the 1958BC. We used the data from Northern Finland Birth Cohort 1966 (NFBC66, up to n = 5,316) and Twins UK (up to n = 3,943) to replicate our initial findings from 1958BC. RESULTS: After Bonferroni correction, the joint-likelihood ratio test suggested interactions on serum triglycerides (4 SNP - SNP pairs), LDL cholesterol (2 SNP - SNP pairs) and WHR (1 SNP - SNP pair) in the 1958BC. MDR permutation model testing analysis showed one two-way and one three-way interaction to be statistically significant on serum triglycerides in the 1958BC. In meta-analysis of results from two replication cohorts (NFBC66 and Twins UK, total n = 8,183), none of the interactions remained after correction for multiple testing (Pinteraction >0.17). CONCLUSIONS: Our results did not provide strong evidence for interactions between allelic variations in VDR and RXRG genes on metabolic outcomes; however, further replication studies on large samples are needed to confirm our findings.

Interactions between uncoupling protein 2 gene polymorphisms, obesity and alcohol intake on liver function: a large meta-analysed population-based study

BACKGROUND AND OBJECTIVE: Given the role of uncoupling protein 2 (UCP2) in the accumulation of fat in the hepatocytes and in the enhancement of protective mechanisms in acute ethanol intake, we hypothesised that UCP2 polymorphisms are likely to cause liver disease through their interactions with obesity and alcohol intake. To test this hypothesis, we investigated the interaction between tagging polymorphisms in the UCP2 gene (rs2306819, rs599277 and rs659366), alcohol intake and obesity traits such as BMI and waist circumference (WC) on alanine aminotransferase (ALT) and gamma glutamyl transferase (GGT) in a large meta-analysis of data sets from three populations (n=20 242). DESIGN AND METHODS: The study populations included the Northern Finland Birth Cohort 1966 (n=4996), Netherlands Study of Depression and Anxiety (n=1883) and LifeLines Cohort Study (n=13 363). Interactions between the polymorphisms and obesity and alcohol intake on dichotomised ALT and GGT levels were assessed using logistic regression and the likelihood ratio test. RESULTS: In the meta-analysis of the three cohorts, none of the three UCP2 polymorphisms were associated with GGT or ALT levels. There was no evidence for interaction between the polymorphisms and alcohol intake on GGT and ALT levels. In contrast, the association of WC and BMI with GGT levels varied by rs659366 genotype (Pinteraction=0.03 and 0.007, respectively; adjusted for age, gender, high alcohol intake, diabetes, hypertension and serum lipid concentrations). CONCLUSION: In conclusion, our findings in 20 242 individuals suggest that UCP2 gene polymorphisms may cause liver dysfunction through the interaction with body fat rather than alcohol intake.

Screening of ARHSP-TCC Patients Expands the Spectrum of SPG11 Mutations and Includes a Large Scale Gene Deletion

Autosomal recessive spastic paraplegia with thinning of corpus callosum (ARHSP-TCC) is a complex form of HSP initially described in Japan but subsequently reported to have a worldwide distribution with a particular high frequency in multiple families from the Mediterranean basin. We recently showed that ARHSP-TCC is commonly associated with mutations in SPG11/KIAA1840 on chromosome 15q. We have now screened a collection of new patients mainly originating from Italy and Brazil, in order to further ascertain the spectrum of mutations in SPG11, enlarge the ethnic origin of SPG11 patients, determine the relative frequency at the level of single Countries (i.e., Italy), and establish whether there is one or more common mutation. In 25 index cases we identified 32 mutations; 22 are novel, including 9 nonsense, 3 small deletions, 4 insertions, 1 in/del, 1 small duplication, 1 missense, 2 splice-site, and for the first time a large genomic rearrangement. This brings the total number of SPG11 mutated patients in the SPATAX collection to 111 cases in 44 families and in 17 isolated cases, from 16 Countries, all assessed using homogeneous clinical criteria. While expanding the spectrum of mutations in SPG11, this larger series also corroborated the notion that even within apparently homogeneous population a molecular diagnosis cannot be achieved without full gene sequencing. (C) 2008 Wiley-Liss, Inc.

Diagnóstico regional do processo de queijo coalho comercializado em Natal/RN

Coalho cheese is a typical product of the Northeastern Brazil, which is consumed both raw and cooked. The present work aimed to study the characteristics of artisanal and industrial processes in the production of coalho cheese sold in Natal / RN in order to evaluate its quality and consumer s profile. Four artisanal cheeses plants were monitored and a questionnaire was sent to different cheese industries. Besides this, eight cheese samples (four artisanal and four industrial) were evaluated in regard to the microbiological quality, physical-chemical and sensory attributes. The sensory acceptance was evaluated by using 108 non-trained panelists by using the hedonic scale. The consumer s profile survey was applied to 400 consumers of coalho cheese. The lack of hygiene control was detected at the artisanal cheese production, which uses raw milk as its raw material. Research has shown that the industrialized cheeses are made from pasteurized milk provided by their own production or by a third party, as observed in cheese making dairies. In general, the results indicate variation in the manufacturing process of coalho cheese, which results in the lack of product standardization. Regarding the physical-chemical analysis, most artisanal and industrial samples presented moisture content between 36 and 40 %, classified as medium moisture cheese, which is the only parameter that showed no significant difference (p>0.05). However, the water activity (Aw), pH and acidity results differed significantly. All artisanal samples showed coliform contamination at 35 °C, which confirms the poor hygienic conditions. In regard to coliforms at 45 °C, 75 % of artisanal coalho cheese samples had value higher than 103 MPN / g, a value above the lawful limits determined by RDC nº 12. Fifty percent of industrial coalho cheese samples showed coagulase-positive Staphylococcus values above the limit allowed by the RDC nº 12, indicating poor handling. The sensory evaluation revealed that the taste was the only parameter that showed significant difference, and this difference was only between two industrial brands. The consumer s survey showed that the coalho cheese flavor is the most important reason for buying this kind of cheese. Although coalho cheese is mainly bought in supermarkets, open street markets and country shops are still important selling points. It is concluded that there is no coalho cheese standardization in the RN state, which leads to variations in physical-chemical and sensory attributes. Moreover, it is necessary greater hygiene control in the production and handling procedures of coalho cheese.

Efeito do ácido lático sobre as características microbiológicas, físico-químicas e sensoriais na carne do sol

The dried beef is a food traditionally eaten by Northeastern and has an extensive trade in the city of Natal-RN. It is usually produced in an empirical manner, without any standardization in production. Characterized as partially dehydrated meat product, so that the activity of water present is not sufficient to prevent microbial growth, degradation or the production of microbial toxins. The guarantee that the market dried beef is to provide a quality product hygienic, microbiological, physicochemical and sensory stable and adequate for the safety and consumer satisfaction, which has been increasingly attracted to food with natural preservatives. Thus, the meat industries are replacing the current seasonings and natural preservatives for similar, with it without affecting the shelf life of products. Lactic acid has been used to meet these requirements. In this sense, this study aimed to evaluate the effect of lactic acid on the physico-chemical, microbiological and sensory, besides knowing the consumer profile of dried meat of the City of Natal / RN. The results demonstrated that the use of lactic acid in concentrations of 1% and 2% during the processing of dried meat, had statistically significant effect (p < 0.05) on the physico-chemical (pH and water activity) and consequently reduced the microbial count does not alter the taste of the new product developed. Regarding the results on the consumer profile, it was found that the majority of respondents (71.75%) did not observe the presence of the stamp of the Federal Inspection Service (SIF) to buy this meat food that 81.55% of consumers check the hygiene conditions of the site and handlers, however, a large proportion of respondents not concerned with the guarantee of origin of typical regional products featuring a hazard to food safety for consumers of the city of Natal-RN

Clinical and molecular phenotype of Aicardi-Goutières syndrome

Aicardi-Goutières syndrome (AGS) is a genetic encephalopathy whose clinical features mimic those of acquired in utero viral infection. AGS exhibits locus heterogeneity, with mutations identified in genes encoding the 3′→5′ exonuclease TREX1 and the three subunits of the RNASEH2 endonuclease complex. To define the molecular spectrum of AGS, we performed mutation screening in patients, from 127 pedigrees, with a clinical diagnosis of the disease. Biallelic mutations in TREX1, RNASEH2A, RNASEH2B, and RNASEH2C were observed in 31, 3, 47, and 18 families, respectively. In five families, we identified an RNASEH2A or RNASEH2B mutation on one allele only. In one child, the disease occurred because of a de novo heterozygous TREX1 mutation. In 22 families, no mutations were found. Null mutations were common in TREX1, although a specific missense mutation was observed frequently in patients from northern Europe. Almost all mutations in RNASEH2A, RNASEH2B, and RNASEH2C were missense. We identified an RNASEH2C founder mutation in 13 Pakistani families. We also collected clinical data from 123 mutation-positive patients. Two clinical presentations could be delineated: an early-onset neonatal form, highly reminiscent of congenital infection seen particularly with TREX1 mutations, and a later-onset presentation, sometimes occurring after several months of normal development and occasionally associated with remarkably preserved neurological function, most frequently due to RNASEH2B mutations. Mortality was correlated with genotype; 34.3% of patients with TREX1, RNASEH2A, and RNASEH2C mutations versus 8.0% RNASEH2B mutation-positive patients were known to have died (P = .001). Our analysis defines the phenotypic spectrum of AGS and suggests a coherent mutation-screening strategy in this heterogeneous disorder. Additionally, our data indicate that at least one further AGS-causing gene remains to be identified. © 2007 by The American Society of Human Genetics. All rights reserved.