2,263 research outputs found

    Review of R and D on Water Hyacinth Utilization in the Philippine Republic

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    The operations of a Filipino inventor were observed with a view toward determining the technical-economic potential of his hyacinth utilization concepts if the highly fibrous portion of the plant were separated from the other components. Subjects of particular interest include: (1) water hyacinth harvesting techniques, volumes and costs; (2) hyacinth defibering processes; and (3) uses of hyacinth materials for production of animal feeds, paper fibers, particle boards, acoustic and insulation boards, various vitamins and minerals (especially Vitamin A), food products, pesticides, and medicinal and pharmaceutical products

    A History of The Fort Hays Kansas State College

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    This thesis is a history of the Fort Hays Kansas State College from 1902-1942

    The Quintessential Public Servant

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    A Tribute to Wade H. McCree, Jr

    Geology of the Northern Part of the Ortiz Mountains, Santa Fe County, New Mexico

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    The northern part of the Ortiz Mountains of north-central New Mexico consists of a tilted fault block of Cretaceous Mancos shale and Mesaverde formation intruded by latite-andesite porphyry sills and laccoliths and a nepheline-bearing augite manzonite stock. Igneous activity started with the development of a volcanic vent in what is now the central part of the mountains. Volcanic debris from the vent want removed from the area by erosion and provided sedimentary material for the late [ ] Espinaso volcanics of the adjoining areas. Intrusion of the latite-andesite porphyry sills and laccolite followed extrusive igneous activity, as demonstrated by the fact that porphyritic rocks intrude the Espinaso volcanics in the adjacent areas. Igneous acitivity was concluded by the intrusion of the nepheline-bearing augite monzonite which cuts across the earlier rocks. Normal faulting along the eastern border of the adjoining Rio Grande depression uplifted the area in the late Pliocene or early Pleistocene time

    Predictors of Ransomware From Binary Analysis

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    Ransomware, a type of malware that extorts payment from a victim by encrypting her data, is a growing threat that is becoming more sophisticated with each generation. Attackers have shifted from targeting individuals to entire organizations, raising extortions from hundreds of dollars to hundreds of thousands of dollars. In this work, we analyze a variety of ransomware and benign software binaries in order to identify indicators that may be used to detect ransomware. We find that several combinations of strings, cryptographic constants, and a large number loops are key indicators useful for detecting ransomware

    Changes in Purkinje cell firing and gene expression precede behavioral pathology in a mouse model of SCA2.

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    Spinocerebellar ataxia type 2 (SCA2) is an autosomal dominantly inherited disorder, which is caused by a pathological expansion of a polyglutamine (polyQ) tract in the coding region of the ATXN2 gene. Like other ataxias, SCA2 most overtly affects Purkinje cells (PCs) in the cerebellum. Using a transgenic mouse model expressing a full-length ATXN2(Q127)-complementary DNA under control of the Pcp2 promoter (a PC-specific promoter), we examined the time course of behavioral, morphologic, biochemical and physiological changes with particular attention to PC firing in the cerebellar slice. Although motor performance began to deteriorate at 8 weeks of age, reductions in PC number were not seen until after 12 weeks. Decreases in the PC firing frequency first showed at 6 weeks and paralleled deterioration of motor performance with progression of disease. Transcription changes in several PC-specific genes such as Calb1 and Pcp2 mirrored the time course of changes in PC physiology with calbindin-28 K changes showing the first small, but significant decreases at 4 weeks. These results emphasize that in this model of SCA2, physiological and behavioral phenotypes precede morphological changes by several weeks and provide a rationale for future studies examining the effects of restoration of firing frequency on motor function and prevention of future loss of PCs

    Engaging and empowering students in the culture of higher education: a Native analysis of students\u27 experiences in the Teaching-Learning Academy

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    There is a marked climate of concern over the quality of teaching and learning in the culture of higher education. In the 1980s, The Carnegie Foundation for the Advancement of Teaching conducted a national survey and found that most faculty members felt strained by the competing priorities of teaching and research, which at times negatively impacted their performance in the classroom and their relationship with students. Carnegie addressed this problem by spearheading a reform movement to study and enhance teaching and learning in the university classroom, a growing body of literature known today as the Scholarship of Teaching and Learning (SoTL). Western Washington University (WWU) was an early participant in these efforts beginning in 1998, and has since received national and international acclaim for the Teaching-Learning Academy (TLA), WWU\u27s primary SoTL initiative. The TLA uses a participatory action research (PAR) process in its work; students partner with administrators, staff and faculty to study and enhance the learning culture at WWU through dialogue and action. Little has been published about the impact of partnering with students in SoTL and this thesis examined how students benefitted from participation in TLA. The author of this thesis participated in the TLA as a student and also worked for the program as a staff member. Using an anthropological approach, the author situates herself as a native researcher, and uses a grounded theory approach to analyze the benefits students perceived. Five themes were discovered in the students\u27 surveys: 1) increased opportunities for self-awareness and self-expression; 2) increased awareness/understanding of the diversity of ideas/perspectives; 3) increased pedagogical intelligence and learner autonomy; 4) increased sense of power within the university; and 5) increased sense of belonging and community at WWU. The key findings indicate that participating in TLA increases students\u27 engagement in their learning, and empowers students to make a difference in the university because they feel they are valued members of the campus community. The TLA\u27s PAR model has significant benefits for student participants which can and should be expanded both in the field of SoTL as well as in other aspects of higher education

    Mathematics for Whom: Reframing and Humanizing Mathematics

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    Mathematics for social justice allows students to see mathematics as an analytic tool to understand and influence issues important to them and their communities. Existing work in teaching mathematics for social justice often connects to secondary curriculum. But what about elementary mathematics? This paper describes the theoretical frames and gives an example of social justice-oriented mathematics with elementary-age students. We share the process of analyzing published K-6 mathematics curriculum as an entryway to engage in investigations that raise studentsā€™ awareness of social issues and to develop their mathematical power and sense of self as mathematics thinkers and doers

    Mathematics for Whom: Reframing and Humanizing Mathematics

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    In this paper, we share a process in which we, as mathematics teacher educators and education researchers, have worked in collaboration with Kā€“6 teachers and students to analyze the purported neutrality of mathematics textbook word problems and to consider ways to use mathematics to analyze social inequities in the world. In the sections that follow, we describe the framework that grounds our development of justice-oriented mathematics curriculum and share an example of how textbook analysis can serve as an entryway to investigations that raise studentsā€™ awareness of social issues while developing their power as mathematics thinkers and doers. Drawing from these experiences of creating and teaching mathematics projects, we end with a discussion of the complexities, challenges, and possibilities of creating justice-oriented mathematics curriculum in elementary-school settings

    High frequency rays of cosmic origin II. Mountain peak and airplane observations

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    The elimination in penetrating ray experiments of temperature and pressure effects is accomplished through new features in the design of Wulf electroscopes, but especially through immediate reduction in situ of all deflections to volts. Variation of penetrating radiation with altitude and with time of day. ā€” When suitable precautions are taken for eliminating the activity of adjacent rocks, both airplane and mountain peak observations agree in showing a definite variation of the penetrating radiation with altitude alone. Within the limits of experimental error all observations are consistent in showing no dependence of the penetrating radiation upon the time of day or upon the position of heavenly bodies. Absorption coefficients of penetrating rays. ā€” Absorption experiments made on Pikes Peak with lead sheets 4.8 cm thick furnish evidence for the existence on mountain peaks of copious new rays of local origin of no greater hardness than that of gamma rays. If these new rays are assumed to be homogeneous their absorption coefficient is about 3.1 per meter of water. These experiments, however, furnish no definite evidence for the existence of very penetrating rays of cosmic origin. Necessary characteristics of cosmic rays if they exist ā€” Such rays cannot produce as much as 2 ions per cc per sec. at sea level if they have an absorption coefficient not less than 0.25 per meter of water. If cosmic rays exist at all they must be less intense than this, or else they must be more penetrating than anyone has as yet suggested
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