Kemampuan Representasi Matematis Siswa pada Materi Segi Empat di Kelas VIII SMP Kemala Bhayangkari

The purpose of this research is to reveal the students ability of representation enactive, iconic, and symbolic on the quadrilateral matter in the class 8 SMP Kemala Bhayangkari. The method that is used is descriptive research in survey research mode. Based on the result of research, student\u27s enactive representation aspects identified that student is able to put a square on the frame and students at the intermediate and lower ability is not able to fold a square of paper according the line, then made its point and the relevance edge of square. In the aspect of iconic representations, all students are not able to put a rectangular piece of paper in accordance with it\u27s associated and only one student who was not able to draw a rectangle on the Cartesian diagram. In the aspects of symbolic representation identified that all students are not able to identify objects around and classify these objects according to the types of rectangular, but all students were able to write the same edge pairs in length of a rectangle

Spatial distribution of introduced brook trout Salvelinus fontinalis (Salmonidae) within alpine lakes: evidences from a fish eradication campaign

Brook trout Salvelinus fontinalis have been used worldwide to stock fishless alpine lakes, negatively affecting native biota. Understanding its spatial ecology in invaded ecosystems can provide information to interpret and contrast its ecological impact. We opportunistically used capture points of brook trout gillnetted during an eradication campaign to assess the distribution patterns of four unexploited populations inhabiting high-altitude lakes. The main eradication method implies the use of many gillnets with several mesh sizes, which are selective for different fish sizes. For each lake we drew six capture maps associated with as many different mesh sizes, and we tested whether the distance from the coastline (which in alpine lakes is a reliable proxy of the most important spatial gradients, e.g. depth, temperature, prey availability, lighting conditions) influences the proportion of captured fish belonging to different size classes and the number of fish captured by the nets with different mesh sizes. To interpret the results, we also provide a cartographic description of the lakes’ bathymetry and littoral microhabitats. We found (1) a negative relationship between brook trout distribution and the distance from the coastline in all of the size classes, lakes and mesh sizes; (2) that large brook trout can thrive in the lakes’ center, while small ones are limited to the littoral areas; and (3) that the distance from the coastline alone cannot explain all the differences in the catch densities in different parts of the lakes. As in their native range, introduced brook trout populations also have littoral habits. Microhabitats, prey availability and distance from the spawning ground are other likely factors determining the distribution patterns of brook trout populations introduced in alpine lakes. The obtained results also provide useful information on how to plan new eradication campaigns

Changing Behavior Using Self-Determination Theory

Self-determination theory is a generalized theory of behavior that focuses on motivation quality and psychological need satisfaction as preeminent behavioral determinants. The theory distinguishes between autonomous and controlled forms of motivation. Autonomous motivation reflects willingly engaging in behaviors for self-endorsed reasons, whereas controlled motivation reflects engaging in behavior for externally or internally pressured or controlled reasons. Satisfaction of the needs for autonomy, competence, and relatedness is necessary for optimal functioning and well-being, and influences the form of motivation, autonomous or controlled, experienced by individuals when acting. Autonomous motivation is consistently related to sustained behavior change and adaptive outcomes. Interventions to promote autonomous motivation have targeted psychological need support provided by social agents (e.g., leaders, managers, teachers, health professionals), particularly autonomy need support. Interventions using need-supportive techniques have demonstrated efficacy in promoting autonomous motivation, behavior change, and adaptive outcomes. Research has identified behaviors displayed, and language used, by social agents, or communicated by other means, that support autonomous motivation. Autonomy-support training programs have been developed to train social agents to promote autonomous motivation and behavior change. Future research needs to examine the unique and interactive effects of specific autonomy-support techniques, provide further evidence for long-term efficacy, and examine “dose” effects and long-term efficacy.Peer reviewe

Factors shaping distribution and abundance of raptors wintering in two large Mediterranean islands

A growing number of ecological studies suggest that animal distributions are not only influenced by classical ecological features such as habitat availability, but also by the motion capacity of the studied animal. Here we analyse the diversity and density of two wintering raptor communities from Crete and Sicily, two large Mediterranean islands located along migratory flyways. We performed 611 and 1030 km of transects in Crete and Sicily respectively, examining the spatial distribution of raptors in relation to land use, topography, raptor species diversity and abundance. Our results show that community diversity and specific abundance are strictly related in accordance with the ‘More Individuals Hypothesis’. Comparing the two most common raptors, the density of the Eurasian kestrel was the highest in Sicily and that of the common buzzard in Crete. An overall positive effect of Eurasian kestrel density on that of the common buzzard was found in both islands, but higher in Crete. Our findings suggest that the distribution and density of the Eurasian kestrel, because of its higher movement ability, are less influenced by the presence of ecological barriers along potentially migratory flyways. We cannot exclude that higher inter specific competition with common buzzards in Crete might have pushed the smaller species to cross the Mediterranean Sea in order to overwinter in Africa

Analisis Faktor Risiko Kejadian Hipertensi pada Masyarakat di Pesisir Sungai Siak Kecamatan Rumbai Kota Pekanbaru

Hypertension was one of the deases which often caused cardiovascular disorder and the reason from enhance of death number because of cardiovascular disorder that come from hypertension, was to know the hypertension risk factor and do the prevention. In Indonesia, hypertension was serious problem, beside because of the high prevalension, also the disease came from that is fatal like heart disease, stroke, kidney failure and others. Arm of this experiment to get information about the amount of risk factor which adhere or cannot be change and the risk factor which can be change as hypertension risk factor. The experiment was kind of observasional analytic experiment with case control study. Number of respondent is 78 sample, consist of 39 cases and 39 control. Sample collected was using consecutive sampling method. The data was analyzing bivariat and multivariat with regression logistic method, using SPSS program. Experiment result shows that there were 3 risk factor which related to hypertension event that was physical activity (p=0,000; OR=13,47; 95% CI=3,52-51,58), obecity (p=0,002; OR=6,46; 95% CI=1,95-21,47) dan stress (p=0,016; OR=0,196; 95% CI=0,05-0,74)

Meeting the Expectations of Your Heritage Culture: Links between Attachment Style, Intragroup Marginalisation, and Psychological Adjustment

This article has been made available through the Brunel Open Access Publishing Fund.This article has been made available through the Brunel Open Access Publishing Fund.Do insecurely-attached individuals perceive greater rejection from their heritage culture? Few studies have examined the antecedents and outcomes of this perceived rejection – termed intragroup marginalisation – in spite of its implications for the adjustment of cultural migrants to the mainstream culture. The present study investigated whether anxious and avoidant attachment orientations among cultural migrants were associated with greater intragroup marginalisation and, in turn, with lower subjective well-being and flourishing, and higher acculturative stress. Anxious attachment was associated with heightened intragroup marginalisation from friends and, in turn, with increased acculturative stress; anxious attachment was also associated with increased intragroup marginalisation from family. Avoidant attachment was linked with increased intragroup marginalisation from family and, in turn, with decreased subjective well-being

Gas-sensitive properties of thin film heterojunction structures based on Fe2O3-In2O3 nanocomposites

This paper reports an investigation of the gas-sensitive properties of thin film based on the double-layers Fe2O3/In2O3 and Fe2O3-In2O3/In2O3 towards gases with different chemical nature (C2H5OH, CH4, CO, NH3, NO2, O3). As it was found, the -Fe2O3-In2O3 composite (Fe:In = 9:1) is more sensitive to O3; on the contrary, the -Fe2O3-In2O3 system (9:1), possesses an higher sensitivity to NO2. The optimal temperature for detecting both gases is in the range 70 - 100C. Sensors based on the -Fe2O3/In2O3 heterostructure show the maximum response to C2H5OH at considerably higher temperatures (250-300C), but this layer is practically insensitive to other reducing gases like CH4, CO and NH3 in the same temperature range. An explanation of the different gas-sensitive behavior for the these samples resulted from the particular features of their structure and phase stat

The Science of Behavior Change : The Road Ahead

Peer reviewe