Knowledge Construction in Wikipedia: A Systemic-Constructivist Analysis

We propose a systemic-constructivist perspective for analyzing knowledge construction. In contrast to theories that focus on individuals as actors, the systemic-constructivist approach emphasizes the relevance of social systems and regards the construction of knowledge as a self-referential process that takes place in social systems. We propose that it is the system that defines what is accepted as legitimate knowledge and thus shapes individuals’ behavior. We present this approach and its implications by providing a case study of knowledge construction in Wikipedia. We analyzed the article about the Fukushima Daiichi nuclear power plant shortly after the nuclear catastrophe unfolded. There was a flood of highly uncertain information circulating, which the social system Wikipedia had to deal with and make meaning of. We obtained a group of very diverse people who largely lacked specific background education on the topic but accomplished the collaborative creation of an article that was later considered by experts to be of high quality. By interpreting these occurrences as operations of a social system, we aim to extend the theoretical basis of the learning sciences with an approach that emphasizes systems and their structures instead of individuals or groups. We discuss how this perspective may contribute to understanding collaborative knowledge construction.     

Olympic lightweight and open-class rowers possess distinctive physical and proportionality characteristics

Abstract

Rowers competing at the 2000 Olympic Games were measured for 38 anthropometric dimensions. The aim was to identify common physical characteristics that could provide a competitive advantage. The participants included 140 male open-class rowers, 69 female open-class rowers, 50 male lightweight rowers, and 14 female lightweight rowers. Body mass, stature, and sitting height were different (P < 0.01) between the open-class and lightweight rowers, as well as a comparison group of healthy young adults (“non-rowers”, 42 males, 71 females), for both sexes. After scaling for stature, the open-class rowers remained proportionally heavier than the non-rowers, with greater proportional chest, waist, and thigh dimensions (P < 0.01). Rowers across all categories possessed a proportionally smaller hip girth than the non-rowers (P < 0.01), which suggested the equipment places some constraints on this dimension. Top-ranked male open-class rowers were significantly taller and heavier and had a greater sitting height (P < 0.01) than their lower-ranked counterparts. They were also more muscular in the upper body, as indicated by a larger relaxed arm girth and forearm girth (P < 0.01). For the male lightweight rowers, only proportional thigh length was greater in the best competitors (P < 0.01). In the female open-class rowers, skinfold thicknesses were lower in the more highly placed competitors (P < 0.01). In conclusion, the rowers in this sample demonstrated distinctive physical characteristics that distinguish them from non-rowers and other sports performers.     

Filipino Nursing Students' Behavioral Intentions Toward Geriatric Care: A Structural Equation Model (SEM)

Anchored on the key constucts of Ajzen's Theory of Planned Behavior (1985 Ajzen , I. ( 1985 ). From intentions to actions: A theory of planned behavior . In J. Kuhl & J. Beckman (Eds.), Action-control: From cognition to behavior (pp. 11 – 39 ). Heidelberg , Germany : Springer .[Crossref] , [Google Scholar]), this paper seeks to test a model that explores the influence of knowledge, attitude, and caring behavior on nursing students’ behavioral intention toward geriatric care. A five-part survey-questionnaire was administered to 839 third and fourth year nursing students from a comprehensive university in the Philippines. To delineate the underlying dimensions of knowledge, attitude, and caring behavior, an exploratory factor analysis (EFA) was carried out. The resulting factors were integrated in the proposed model prior to structural equation modeling (SEM). The emerging model shows that while knowledge did not directly influence intent, it had a direct impact in the development of attitudes. Impliedly, by delineating the variables through EFA, new relationships between specific knowledge, attitude, and caring behavior dimensions can be observed. As shown, a nursing student's intent to care for older people can be increased if he/she sees them as powerful and wise. On the other hand, if one sees older people as demanding in nature, he/she is less likely to pursue geriatric nursing in the future. Interestingly, the resulting structural model in this study has successfully and clearly delineated the positive and negative determinants of nursing students’ intent to care for geriatric patients. The researchers hope that the model be used as an assessment tool for various nurse populations in order to effectively plan innovative strategies when introducing geriatric nursing.     

Eight-season epidemiological study of injuries in men’s international Under-20 rugby tournaments

The aim of this study was to define the incidence and nature of match injuries sustained in men’s international under-20 rugby. The study comprised an 8-season prospective study of 16 international under-20 rugby tournaments. Procedures complied with the consensus statement for epidemiological studies in rugby. Outputs included players’ mean age, stature and body mass and incidence, severity, location, type and cause of match injuries. The overall incidence of injury was 49.7 injuries/1000 player-match-hours (backs: 48.3; forwards: 50.9) with a mean severity of 32.2 days-absence (backs: 29.4; forwards: 34.4). There were no significant changes in incidence or severity of injury over the study period. Shoulder/clavicle (18.3%), head/face (16.4%), knee (13.7%) and ankle (13.7%) were the most common injury locations and ligament sprain (35.4%), haematoma/bruise (15.9%), concussion (12.5%) and muscle strain (11.2%) the most common types of injury. Being-tackled (29.2%), tackling (24.0%) and collisions (14.3%) were the most common events leading to injury. The results confirm that international under-20 rugby has a high incidence and severity of injury but the incidence is half that reported for senior international players. There was no significant change in the overall incidence of injury at the Under-20 level in the period 2008 to 2016.     

Action learning: avoiding conflict or enabling action

Action learning is based on the premise that action and learning are inextricably entwined and it is this potential, to enable action, which has contributed to the growth of action learning within education and management development programmes. However has this growth in action learning lead to an evolution or a dilution of Revan's classical Principles (RCP)? We illustrate, using examples from a case study organisation, how action learning enabled action but also how action learning supported some participants in avoiding conflict. We argue that key decision makers in the organisation are, often unacknowledged, part of the action learning process and that while the action learning sets enabled participants to practice questioning taken-for-granted-assumptions, this questioning needed to be extended and supported within wider communities. We also argue that critical theory can enhance action learning by enabling better questioning and we refocus attention on the need for ‘organizing insight’ (Vince, 2004). Finally we reemphasise the social aspect of critically reflective practice and in the spirit of engaging and extending the community of reflective practice we offer our reflections; opening a space for others to question and reflect extending further theory which illuminates the idea of action learning.     

Performance tolerance and boat set‐up in elite sprint Kayaking

The aim of this study was to examine the inter‐relationship between athlete morphology, equipment set‐up and performance in elite sprint kayaking. Correlations applied to data from the 2000 Olympics were used to select the most important links between morphology and boat set‐up — paddle grip width and foot‐bar distance. Associations between body size and the above selected equipment set‐ups were calculated using a Pearson correlation matrix, to facilitate the logical selection of independent variables as input for regression analyses. Significant (p < 0.01) regression equations were developed for the prediction of foot‐bar distance (r² = 0.589: standard error of estimate (SEE) = 4.48) and paddle grip width (r² = 0.541: SEE = 3.08). Three national‐standard sprint kayakers used their preferred set‐up together with modifications of their predicted set‐up, derived from Olympic data, to test performance tolerance in sprint kayaking. Mean coefficients of multiple determination over three trials for the three paddlers of 0.91, 0.91 and 0.92 for left paddle force, right paddle force, and paddle angle at water entry, respectively, were recorded when using their preferred set‐up. These data showed that the paddlers produce consistent patterns of motion. The intervention of altering the boat set‐up resulted in varying changes to boat speed. The mean preferred speed for the three paddlers of 4.47 m/s was reduced by 0.07 and 0.10 m/s when the above boat set‐up was modified to a predicted and ‘predicted plus one standard deviation’ respectively. These changes in boat speed were the result of alterations in the mechanics of paddling technique.     

Olympic lightweight and open-class rowers possess distinctive physical and proportionality characteristics

Rowers competing at the 2000 Olympic Games were measured for 38 anthropometric dimensions. The aim was to identify common physical characteristics that could provide a competitive advantage. The participants included 140 male open-class rowers, 69 female open-class rowers, 50 male lightweight rowers, and 14 female lightweight rowers. Body mass, stature, and sitting height were different (P < 0.01) between the open-class and lightweight rowers, as well as a comparison group of healthy young adults ("non-rowers", 42 males, 71 females), for both sexes. After scaling for stature, the open-class rowers remained proportionally heavier than the non-rowers, with greater proportional chest, waist, and thigh dimensions (P < 0.01). Rowers across all categories possessed a proportionally smaller hip girth than the non-rowers (P < 0.01), which suggested the equipment places some constraints on this dimension. Top-ranked male open-class rowers were significantly taller and heavier and had a greater sitting height (P < 0.01) than their lower-ranked counterparts. They were also more muscular in the upper body, as indicated by a larger relaxed arm girth and forearm girth (P < 0.01). For the male lightweight rowers, only proportional thigh length was greater in the best competitors (P < 0.01). In the female open-class rowers, skinfold thicknesses were lower in the more highly placed competitors (P < 0.01). In conclusion, the rowers in this sample demonstrated distinctive physical characteristics that distinguish them from non-rowers and other sports performers.