[Do breast-fed children have a lower risk for later obesity? Discussion of a meta-analysis]

The relationship between breast-feeding and childhood obesity is of great interest. Since 2000, several studies have been published with conflicting data regarding the potential protective effect of breast-feeding on childhood obesity. Meta-analyses suggested a small but significant protective effect of breast-feeding, but a recent study was not able to show such an effect. This paper summarises one of these meta-analyses and discusses the strengths and limitations of the meta-analysis approach.

Panel Discussion - Local Finns in Illinois

Finnish North American labor contributions and involvement in strikes such as the 1913-14 Michigan Copper Strike are being restored to the historical record and even commemorated; yet some Finnish American communities’ labor history still goes untold. We contend that in the case of DeKalb, Illinois, the Finnish American labor and strike history has been, in part, overshadowed in contemporary remembrance by the city’s promotion of traditional history and commemoration focused on the barbed wire barons. Local Finnish American labor involvement and participation in strikes appears to have been marginalized in favor of a subsequent historical narrative surrounding the capitalist entrepreneurship of elites. However, counter memories of labor struggles may be lost for a variety of reasons. External and internal forces make it difficult for marginalized groups to offer alternatives to the construction of collective memories that exclude them. These forces include, but are not limited to gradual assimilation into dominant culture, internal conflict within social movements, and fear of, or experience with, governmental repression. In our archival research, surveys and interviews with 2nd and 3rd generation Finnish American residents reveal the many forces of “forgetting” that can influence the counter memory of Finnish American labor history in certain communities.

Panel Discussion - Finns in the United States

“Book Notes with Four Authors from Finns in the United States: A History of Settlement, Dissent, and Integration” This panel presentation will highlight chapters in the newly released book, Finns in the United States, published by Michigan State University Press. Authors will discuss their contribution to the book, and highlight key aspects of their work. Finns in the United States has been touted as a fresh and up-to-date analysis of Finnish Americans, an insightful volume that lays the groundwork for exploring this unique culture through a historical context, followed by an overview of the overall composition and settlement patterns of these newcomers.

Occasional white boarding : examining the effects of physics students' understanding of motion graphs

The Modeling method of teaching has demonstrated well--‐documented success in the improvement of student learning. The teacher/researcher in this study was introduced to Modeling through the use of a technique called White Boarding. Without formal training, the researcher began using the White Boarding technique for a limited number of laboratory experiences with his high school physics classes. The question that arose and was investigated in this study is “What specific aspects of the White Boarding process support student understanding?” For the purposes of this study, the White Boarding process was broken down into three aspects – the Analysis of data through the use of Logger Pro software, the Preparation of White Boards, and the Presentations each group gave about their specific lab data. The lab used in this study, an Acceleration of Gravity Lab, was chosen because of the documented difficulties students experience in the graphing of motion. In the lab, students filmed a given motion, utilized Logger Pro software to analyze the motion, prepared a White Board that described the motion with position--‐time and velocity--‐time graphs, and then presented their findings to the rest of the class. The Presentation included a class discussion with minimal contribution from the teacher. The three different aspects of the White Boarding experience – Analysis, Preparation, and Presentation – were compared through the use of student learning logs, video analysis of the Presentations, and follow--‐up interviews with participants. The information and observations gathered were used to determine the level of understanding of each participant during each phase of the lab. The researcher then looked for improvement in the level of student understanding, the number of “aha” moments students had, and the students’ perceptions about which phase was most important to their learning. The results suggest that while all three phases of the White Boarding experience play a part in the learning process for students, the Presentations provided the most significant changes. The implications for instruction are discussed.

Pineal parenchymal tumor of intermediate differentiation: diagnostic pitfalls and discussion of treatment options of a rare tumor entity

Tumors of the pineal region are uncommon, comprising approximately 0.4-1% of all intracranial tumors in adults in European and American series. Histopathologically, they are a very heterogeneous group of tumors. Of genuine pineal tumors, pineal parenchymal tumors of intermediate differentiation (PPTIDs) are the least frequently found type. In this paper, we report on the case of a patient with an unexpected and difficult-to-diagnose PPTID. A 2.2 x 2.2-cm midline mass within the posterior part of the third ventricle with consecutive obstructive hydrocephalus was found in a 44-year-old man presenting with diplopia and gait disturbances. There was no clear connection of the tumor to the pineal gland. Differential diagnosis included all intraventricular and midline tumors, therefore a biopsy was taken. Preliminary histopathological diagnosis was germinoma or primitive neuroectodermal tumor, and the tissue sample was reexamined by a referential neuropathological institute. Final diagnosis was PPTID. The tumor was then resected through a transventricular/transchoroidal approach. Histopathological examination of tumor specimen confirmed the diagnosis of a PPTID. Postoperatively, the patient received gamma-knife radiosurgery. At 1-year follow-up, there are no signs of tumor regrowth. Diagnosis of pineal parenchymal tumors in general and PPTIDs in particular can be troublesome. Their histopathological features are still being defined, as is the biological behavior of the different tumor entities. Thus, treatment options including surgery, radiation therapy, and chemotherapy remain controversial. We recommend surgical removal of PPTID, preferably in toto whenever the size of the tumor permits that kind of excision.