Digital Commons Network^™

The Effects Of A Laboratory Approaches On The Development Of University Students' Science Process Skills And Conceptual Achievement, Uygar Kanli, Rahmi Yagbasan

Essays in Education

The purpose of this study was to compare the effects a laboratory based on the 7E learning cycle model with verification laboratory approach on university students’ development of science process skills and conceptual achievement.

In this study the sample consisted of 81 freshman university students who were taking the General Physics Laboratory-I- course at the university in Türkiye. In this study pretest-posttest design with control group was used. The night class students (43) who took lower weighted standard points from university entrance exam (UEE) than day class students were selected as experimental group. Day class students (38) were selected as …

Graduate Catalog - The School Year 2008-2010, Prairie View A&M University

Graduate Catalog

No abstract provided.

The Next Wave Of Nuclear Proliferation, Nader Elhefnawy

The US Army War College Quarterly: Parameters

No abstract provided.

Earmstrong, Armstrong Atlantic State University

Armstrong News & Publications: e-Armstrong Newsletter (Archived)

No abstract provided.

Ltc Newsletter, University Of Dayton. Ryan C. Harris Learning Teaching Center

LTC Newsletter

Fall 2008

Review Panel, Essays In Education

Essays in Education

Science and Science Education in Turkey Review Panel

Associations Between Performance On The Rey-Osterrieth Complex Figure And Regional Brain Volumes In Children With And Without Velocardiofacial Syndrome, Kevin M. Antshel, Jena Peebles, Nuria Abdulsabur, Anne Marie Higgins, Nancy Roizen, Robert J. Shprintzen, Wanda Fremont, Robert Natasi, Wendy R. Kates

Communication Disorders Faculty Publications

Ninety-two children with velocardiofacial syndrome (VCFS), a genetic disorder caused by a microdeletion of chromosome 22q11.2 and an age, race, and gender-ratio comparable sample of 59 control participants were included in the project. Participants received an MRI as well as a comprehensive neuropsychological battery; the primary outcome measure in the current report is the Rey-Osterrieth Complex Figure (ROCF). Children with VCFS performed less well on the ROCF and have lower whole brain volume compared to controls. After controlling for whole brain volume differences, children with VCFS have bilaterally less parietal lobe gray and white matter yet more frontal lobe white …

Computational Analysis Of Expressed Sequence Tags For Understanding Gene Regulation., I. Elizabeth Cha 1973-

Electronic Theses and Dissertations

High-throughput sequencing has provided a myriad of genetic data for thousands of organisms. Computational analysis of one data type, expressed sequence tags (ESTs) yields insight into gene expression, alternative splicing, tissue specificity gene functionality and the detection and differentiation of pseudogenes. Two computational methods have been developed to analyze alternative splicing events and to detect and characterize pseudogenes using ESTs. A case study of rat phosphodiesterase 4 (PDE4) genes yielded more than twenty-five previously unreported isoforms. These were experimentally verified through wet lab collaboration and found to be tissue specific. In addition, thirteen cytochrome-like gene and pseudogene sequences from the …

Dispersion Of Narrow Diameter Carbon Nanotubes For Optical Characterization., Hemant M. Shah 1981-

Electronic Theses and Dissertations

Optical properties of carbon nanotubes have recently attracted considerable amount of attention. Due to there direct band gap material characteristic these and dimension of the order of nano meters they find potential applications in the field of nano photonics. Thus the optical study of carbon nanotubes is important for both fundamental research and for the next generation technical applications. In this thesis single walled carbon nanotubes were dispersed in various encapsulates such as surfactants, polymers, proteins etc to separate them individually and study there optical properties. The individually dispersed single walled carbon nanotubes displayed unique absorbance spectra. The optical absorption …

The Association Of Maternal Intention To Breastfeed, Early Skin-To-Skin Mother/Infant Contact, And Exclusive Breastfeeding During The Maternity Hospital Stay, Leslie Mary Bramson

Loma Linda University Electronic Theses, Dissertations & Projects

Breastfeeding is the optimal method to nourish and nurture an infant. Exclusive breastfeeding rates in the United States have reached the goal of Healthy People 2010 that 75% of mother's breastfeed in the immediate postpartum period. Yet, less than 35% of San Bernardino county mothers and 47.7% of Riverside county mothers are exclusively breastfeeding during their maternity hospital stays, with as many as 50% of the infants being weaned from the breast in the first 14 days of life.

This prospective study examined archived data collected by Perinatal Services Network (PSN) of Loma Linda University Medical Center/Children's Hospital for the …

Attachment Pathologies Among Incarcerated Sex Offenders, Kelly J. Hunsicker

Loma Linda University Electronic Theses, Dissertations & Projects

Attachment theory underscores the central role of how individuals form and interact within interpersonal and intimate relationships and emphasizes the importance of harmony between caregiver and infant as a foundation for healthy interpersonal relationships. It is believed that amongst the sex offender population that a pathological attachment style will be found which has implication on the types of treatment that would work best for this difficult population. The current research endeavor aggregated empirical research on attachment styles among incarcerated sex offenders. The results suggest a relationship between pathological attachment and sex offender populations.

Summer Commencement Ceremonies, University Of North Florida

Commencement Printed Materials

Program for the Summer Commencement ceremonies.

Production Of Bangla Stops By Native English Speakers Learning Bangla: An Acoustic Analysis, Dustin D. Miller

Theses and Dissertations

Differences in the phonetic and phonological systems of Bangla and English result in negative transfer in the Bangla stop productions of native English speakers. The phonetic realizations of Voice and Aspiration and their interactions with each other are the key factors in this. A production study was carried out focusing on sixteen of the twenty Bangla stops that are distinguished by a four-way voice/aspiration contrast at four different places of articulation, providing a contrastive acoustic analysis of the pronunciation of L1 and L2 adult speakers. Data containing these stops in an intervocalic environment in word-initial, word-medial, and word-final positions was …

Adolescent Depression: Vulnerability Factors For Boys And Girls, Paul Andrew Stebbins

Theses and Dissertations

This study examined sex and age differences in vulnerability factors associated with adolescent depression in a sample of boys and girls. Sex and age comparisons in the means and associations with depressive symptoms, self-esteem, social support, attachment, and expressiveness were examined among 510 adolescents (263 boys; 247 girls; Mage= 13.68; SD= 1.769). Additionally, this study was to identify prominent vulnerability factors for depression in adolescence from a group of known vulnerability factors with depression.

Findings indicate that all of the vulnerability variables included were associated with depression; and these vulnerability factors associated with depression in adolescent boys and girls are …

In-Vitro Evaluation Of Dye Leakage Of An Mta Apical Barrier At Varying Setting Times, Mark Daniel Richey

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to compare the dye leakage of an MTA apical barrier after immediate placement, 1 hour, 4 hours, 24 hours, and 1 week of setting time. One hundred twenty single-rooted extracted teeth were accessed and the apical three millimeters resected. The teeth were instrumented with 0.06 tapered Brasseler EndoSequence series rotary instruments to the apex. The same instrument was then placed in the apical opening and advanced to D16, resulting in an apical opening of 1.36mm. The teeth were randomly assigned to the five test groups, and ten teeth each were placed in positive and …

Organic Methods To Control Root Rot Of Peas And Spinach In North-Central West Virginia, Hannah Witten Schrum

Graduate Theses, Dissertations, and Problem Reports (ETD)

Root rot disease is a limiting factor in organic production of cool season crops for many growers in North central West Virginia. In attempt to control root rot and its devastating impact on crop stands we decided to study a number of environmental, cultural, and biological control methods. The purpose of this work was to study the effect of alterations of the seed environment on disease incidence (measured by crop emergence and survival 21 days after planting) and thereby define techniques which are suitable for small growers to adopt if they have root rot problems. We therefore explored four broadly …

Microwave Dielectroscopy Of Breast Tissue Phantoms In The 5.8-40 Ghz Range, Binh Tran

Electrical Engineering Undergraduate Honors Theses

Based on the high contrast in dielectric properties between the low-water-contain sample and the high-water-content one, we can determine whether the tissue sample is cancerous or normal. In order to make the measurement repeatable and convenient, some phantom materials, which have the same dielectric properties of human tissues, have been prepared. These phantom tissues are made from gelatin, water with honey syrup and Sodium Chloride (NaCl). In this project, we are going to measure and compare the dielectric properties of different types of phantom tissues by using focused beam antennas. The purpose of this project is to perform a systematic …

Mucosal Immunity In Toxoplasma Gondii Infection, J. Schulthess, D. Fourreau, S. Darche, B. Meresse, L. Kasper, N. Cerf-Bensussan, D. Buzoni-Gatel

Dartmouth Scholarship

Toxoplasma gondii is an intracellular parasite that frequently infects a large spectrum of warm-blooded animals. This parasite induces abortion and establishes both chronic and silent infections, particularly in the brain. Parasite penetration into the host activates a strong anti-parasite immune response. In the present paper, we will discuss the interplay between innate and adaptive immunity that occurs within the infected intestine to clear the parasite and to maintain intestinal homeostasis despite the exacerbation of an inflammatory immune response.

A Poisson-Like Model Of Sub-Clinical Signs From The Examination Of Healthy Aging Subjects, Stephen Merrill, Barbara Myklebust, Joel B. Myklebust, Norman Reynolds, Edmund Duthie

Mathematics, Statistics and Computer Science Faculty Research and Publications

Background and aims: Our studies of the standard neurological examination on 66 middle-aged (50–64 yrs) and elderly subjects (65–84 yrs) demonstrate that healthy elders have neurological deficits (or “signs”) that are not associated with specific known neurological disease. The purpose of the current study is to describe this loss of neurological function in healthy aging subjects as seen through accumulated subclinical neurological signs present.

Methods: Logistic regression is applied to the data on each of six signs. Parameters determined are used to describe the distribution of first occurrence times for each sign. The results are then used to construct a …

Dietary Intakes Of Swedish Children And Adolescents: The European Heart Study, Emma Patterson

Masters

What children eat is important both for their health now and for their risk of chronic non communicable diseases, such as cardiovascular disease, in the future. The diets of 1,121 children (aged 9 y, n=552) and adolescents (aged 15 y, n=569) were assessed by an interviewer mediated 24-hour recall, as part of the European Youth Heart Study. Group macronutrient intakes and their food sources were described, and dietary energy density (ED) and breakfast habits were employed as markers of dietary quality. The effect of socioeconomic status on these markers was investigated. The adequacy of energy-reporting in this population was also …

Classification Algorithms On The Cell Processor, Mateusz Wyganowski

Theses

The rapid advancement in the capacity and reliability of data storage technology has allowed for the retention of virtually limitless quantity and detail of digital information. Massive information databases are becoming more and more widespread among governmental, educational, scientific, and commercial organizations. By segregating this data into carefully defined input (e.g.: images) and output (e.g.: classification labels) sets, a classification algorithm can be used develop an internal expert model of the data by employing a specialized training algorithm. A properly trained classifier is capable of predicting the output for future input data from the same input domain that it was …

Time-Measuring Device: Making Your Own History Of Remembrance Box With Childhood’S Physical Growth, Sang Hee Huh

Theses

Memories, for most of us, are precious indeed. Reminiscing helps us recall long gone events and a wide range of emotions. However, our recollection is imperfect and we know our memory is limited. Our memories may change or we may forget. We are unwilling to entrust precious memories solely to the unassisted mind. Children, in particular, undergo considerable physical, mental, and emotional changes. It is not easy for them to realize or later recall their growth process without assistance. At present, children can review their growth with different types of records: written data on a medical history, photos in family …

The Effects Of Eisenia Fetida (Lumbricidae) And Vermicomposting On Earthworm Populations In Monteverde, Costa Rica, August 2008, Sibylle Freiermuth

Monteverde Institute: Tropical Ecology and Conservation

Eisenia fetida (Lumbricidae) is an African earthworm species used in vermicomposting in the larger Monteverde region of Costa Rica. Despite its widespread use and growing popularity, little is known about the impact that introducing E. fetida has on local earthworm species. Exotic earthworms have the potential to drastically change the soil composition and community structure causing cascading effects throughout the ecosystem. However, previous studies have found signs of possible niche partitioning and that species richness and abundance actually increased in the presence of E. fetida. Taking samples for six farms using vermicomposting and six without, I found that vermicomposting actually …

Kin Recognition In The Social Spiders Anelosimus Sp. In Monteverde, Costa Rica, August 2008, Mary Kathryn Busby

Monteverde Institute: Tropical Ecology and Conservation

Anelosimus spiders are social and use pheromonal and vibrational cues to distinguish conspecifics from predators and prey. Juveniles live in their natal web with adults until maturity, at which time they disperse. Given that juveniles are more likely to disperse to locations near to their natal web and that Anelosimus has developed mechanisms for kin recognition, these spiders would be expected to exhibit aggressive behavior less frequently in the presence of intruding spiders from nearby webs than towards intruders from distant webs. This hypothesis was tested by introducing spiders to new webs from distant locations as well as from nearby …

Species Richness Of Vascular Plants In The Riparian Transition Zones Of The Quebrada La Cruz And The Quebrada Socorro In Monteverde, Costa Rica, August 2008, Rhiannon Cook

Monteverde Institute: Tropical Ecology and Conservation

While many studies have been performed to determine the effects of urbanization in the later stages of development on biodiversity, little is known about how biodiversity is affected by urbanizations in its early phases. This research evaluates how the biodiversity of herbaceous plants in the riparian ecotones of two rivers is affected in the transition from a rural to town setting. Morpho species diversity was sampled on two rivers of the Monteverde, Costa Rica area; the Quebrada Socorro, relatively unaffected by human influence, and the Quebrada La Cruz, which is greatly influenced by both the growth of town infrastructure and …

Distribution Of American Leaf Spot Disease (Mycena Citricolor) In Coffee Plantations In Cañitas, Costa Rica, August 2008, Caitlin Looby

Monteverde Institute: Tropical Ecology and Conservation

One of the biggest commodities in the world coffee (Coffea) is an extremely important crop to Costa Rica. There are many ways to manage this crop, however it is primarily shade-grown. Although it is the best method in which to conserve biodiversity, these conditions also promote the growth of Mycena citricolor. Also, known as American Leaf Spot disease, this fungal pathogen causes coffee plants to defoliate and lose their fruit. Four farms in Cañitas, Costa Rica were visited and 12 plants per farm were studied to determine the distribution of this fungus during the wet season. This study also compares …

Pegylated Interferon 2a And 2b In Combination With Ribavirin For The Treatment Of Chronic Hepatitis C In Hiv Infected Patients., Ravinder Dhillon, Simona Rossi, Steven K Herrine

Department of Medicine Faculty Papers

Coinfection with hepatitis C virus (HCV) and HIV is an increasingly recognized clinical dilemma, particularly since the advent of highly active antiretroviral therapy. Several studies of this population have demonstrated both more rapid progression of liver disease and poorer overall prognosis compared to HCV monoinfected patients. Consensus guidelines, based primarily on the results of 4 major randomized trials, recommend treatment with peginterferon and ribavirin for 48 weeks in coinfected patients. However, this current standard of care is associated with lower response rates to therapy than those seen in monoinfected patients. Important predictors of response include HCV genotype, pretreatment HCV RNA …

Isolation And Cloning Of Human Papillomavirus 16 L1 Gene From Iranian Isolate, Ali Teimoori, Hoorieh Soleimanjahi, Fatemeh Fotouhi, Zahra Meshkat

Saudi Medical Journal

OBJECTIVE: To isolate and construct cloning and expression vectors containing human papillomavirus (HPV16-L1) gene as target for application as recombinant vaccine. METHODS: The study was performed in 2007 in Tarbiat Modares University, Tehran, Iran. Four genital specimens DNAs were amplified with the use of HPV type-specific primers based on HPV-16 L1, E6, and E7 genes. The polymerase chain reaction products were cloned into suitable cloning and expression vectors and were confirmed by restriction enzyme analysis and sequencing. RESULTS: The desired plasmids were sequenced and indicated 99% homology with those submitted full length L1 sequences in the GenBank. CONCLUSION: The results …

Activity Of Propolis In An Experimental Model Of Pneumocystosis, Muge Oguzkaya-Artan, A. Nedret Koc, Sibel Silici, Ahmet Ozturk

Saudi Medical Journal

OBJECTIVE: To investigate the anti Pneumocystis effects of propolis on Pneumocystis carinii P. carinii in rat model. METHODS: Rats were obtained, and the study was taken in to place in Erciyes University Clinical and Experimental Research Center, Kayseri, Turkey, in June 2007. In order to obtain spontaneous pneumonia, rats were remained on immunosuppression therapy with dexamethasone throughout the study. Propolis administered orally at doses of 30, 50, and 100 mg/kg/day. Trimethoprim-sulfamethoxazole (TMP-SMX, 50/250 mg/kg/day) was used as positive control and untreated animals as negative control in the study. There were 6 animals in each group. RESULTS: Untreated animals showed P. …

Effects Of Exotic Invasive Vegetation On Breeding Birds Along The North Chickamauga Creek, Shannon Elaine Hatmaker

Masters Theses and Doctoral Dissertations

The invasion of exotic plants into riparian areas of southeastern United States is a conservation concern not only for native plant communities, but also for wildlife. Breeding bird community structure could be particularly affected by such invasions and subsequent habitat changes as birds respond quickly to changes in habitat resources. During the 2007 breeding season, bird communities were surveyed using the line transect census method at four sites along the North Chickamauga Creek in Hamilton County, Tennessee. Two of the sites were regarded as being highly invaded by exotic understory plant species, while the other two sites remain relatively free …