448 research outputs found
Alisa Hill Interview, March 05, 2013
No full textSUMMARY: In this interview, Washington, D.C. native Alisa Hill speaks about the phenomenon of homelessness in the city. Alisa shares her personal experiences with homelessness, including her efforts to find shelter and how being homeless has affected her relationships with others. Alisa also discusses her advocacy efforts to bring attention to the issue of homelessness and her outreach with homeless children. PROJECT’S OBJECTIVES: The interviews conducted as part of the DC Oral History and Social Justice Project record how unhoused residents of the greater DC area view the history of homelessness – how did homelessness become such an entrenched part of the city. The interviews will be used to create critical dialogue among people who are currently unhoused in Washington, DC, and then they may be used to assist future advocacy efforts
A “very decent nick”: ethical treatment in prison-based democratic therapeutic communities
No full textThe penal system of England and Wales has been greatly influenced in the past two decades by the emergence of a moral framework or ‘decency agenda’. What decency means to prisoners and how decency can be embodied into daily prison life, however, remains underexplored. Drawing from her original research in prison-based democratic therapeutic communities (TCs), the author argues that decency is experienced in TCs through an ethic of care and an ethos of change. TC residents benefit from atypical institutional practices which encourage the formation of supportive relationships with prison staff and facilitate meaningful opportunities for personal change
My ‘Hair’itage
No full textAuthor: Garland McKinney | Designer: John Saenz | Illustrator: Alisa Jones | Editor: Kristy MastenIt is a girl’s first day at her new school, and she is challenged to fit in because of her unique appearance
Project in author photography: the tradition of writing paper letters.
No full textFotogrāfijaInformācijas un komunikācijas zinātnesPhotographyInformation and Communication SciencesBakalaura darba autore: Alisa Ustinova
Bakalaura darba tēma: “Projekts autorfotogrāfijā: papīra vēstuļu rakstīšanas tradīcija”
Bakalaura darba vadītājs: Doc. Dr. paed. Alnis Stakle
Bakalaura darba apjoms ir 66 lpp., 41 informatīvie avoti, 1 pielikums, 22 fotogrāfijas. Bakalaura darbs uzrakstīts latviešu valodā.
Bakalaura darba mērķis bija izveidot autorfotogrāfijas projektu par papīra vēstuļu rakstīšanas tradīciju, lai pievērstu sabiedrības uzmanību pie mūsdienu komunikācijas veida trūkumiem, kā arī popularizēt tādu tradīciju kā papīra vēstules rakstīšana.
Bakalaura darbs sastāv no teorētiskās daļas un koncepcijas daļas. Lai sasniegtu gala darba mērķi tika izvirzīti sekojoši uzdevumi. Darba teorētiskajā daļā tika apskatīts fotogrāfijas un autorfotogrāfijas jēdziens, kā arī tika veikta papīra vēstuļu vizuālā atainojuma izpēte. Tika apskatīti komunikācijas un verbālās komunikācijas jēdzieni, papīra vēstules jēdziens un to īpašības, kā arī īpašības komunikācijā ar papīra vēstulēm un tika veikta izpēte par tradīcijas jēdzienu. Darba koncepcijas daļā tika veikts radošā darba koncepcijas dizaina izstrādes apraksts, kurš ietver fotosērijas gaitu, fotogrāfiju uzņemšanas procesu un to pēcapstrādes aprakstu. Darba noslēgumā tika izvirzīti secinājumi.
Atslēgas vārdi: fotogrāfija, komunikācija, papīra vēstule, tradīcija, vizuālais atainojums, autorfotogrāfija.Author of the bachelor's thesis: Alisa Ustinova
Bachelor's thesis topic: "Project in author photography: the tradition of writing letter letters"
Supervisor of the bachelor's thesis: Asst. Prof. Dr. paed. Alnis Stakle
The volume of the bachelor's thesis is 66 pages, 41 informative sources, 1 appendix, 22 photos. The bachelor's thesis is written in Latvian.
The aim of the bachelor's thesis was to create an author's photography project on the tradition of writing paper letters in order to draw the public's attention to the shortcomings of modern forms of communication, as well as to popularize such a tradition as writing a paper letter.
The bachelor's thesis consists of a theoretical part and a conceptual part. In order to achieve the goal of the final work, the following tasks were set. The theoretical part of the work deals with the concept of photography and self-photography, as well as the study of the visual representation of paper letters. The concepts of communication and verbal communication, the concept of a paper letter and their properties, as well as the properties of communication with paper letters were examined and a study of the concept of tradition was carried out. In the part of the work concept, a description of the creative work concept design development was made, which includes the course of the photo series, the process of taking photos and a description of their post-processing. Conclusions were drawn at the end of the work.
Keywords: photography, communication, paper letter, tradition, visual representation, author photography
Rheological properties of granular materials: critical parameters and mixing rules
No full textGranular materials can be found at any stage of processing in many industries, such as food, pharmaceuticals, catalysts, and chemicals. These materials exhibit a variety of flow patterns, and their state and behavior differ from application to application. Since there is a lack of fundamental understanding of particulate or powder behavior, multiple problems can be encountered during routine manufacturing. Scale-up can also be a challenge, as the lack of constitutive equations for granular materials forces most scale-up efforts to follow the trial-and-error route. Powder characterization measurements are employed as both a selection tool and a predictive method for the material's process performance. Therefore, it plays a very important role in process and product development. The numerous existing methods used to characterize the flow properties of powders are mostly application-specific and it is not clear how they correlate with each other or with process performance. Moreover, understanding the relationships between the material properties and the processing conditions is necessary for a successful design of a continuous manufacturing system, which has been a major focus for pharmaceutical industry in the recent years. Before such changes can be implemented, a better understanding of fundamental physical phenomena governing powder flow behavior must be developed. In this work we study particulate/powder flow behavior experimentally using several characterization methods, including the Gravitational Displacement Rheometer (an avalanching tester), the rotational shear cell, and the compressibility tester. We establish the variables of interest through correlative comparison and study the differences and similarities between the methods in order to investigate particulate/powder flow behavior during processing and characterization. A mixing rule for principal stresses is developed through investigation of shear behavior of binary mixtures in a shear cell. In order to better understand the mixing rule the relationship between the particle-particle contact density and measured stresses in a powder bed is explored with DEM simulations. Powder testing methodologies were applied to a case study where the efficiency of the catalyst dry impregnation process was analyzed. As a result, predictive rules and characterization guidelines were developed for different powder systems subjected to various processing conditions.Ph. D.Includes bibliographical referencesby Alisa Victoria Vasilenk
White Dwarf Stars and the Age of the Milky Way
No full textWhite Dwarf Stars and the Age of the Milky Way
Researchers: Alisa Tiselska, Theodore von Hippel, Allison Woodruff, and Joey Hamill
Faculty mentor: Theodore Von Hippel
Abstract Author: Alisa Tiselska
Our research objective is to determine the ages of the Milky Way’s stellar populations using our derived ages from thousands of white dwarf stars. Right ascension, declination, parallax, and proper motion values for known white dwarfs were taken from the Gaia Observatory database to calculate U, V, and W velocities relative to our position in the Galaxy. We wrote two codes —one in Matlab and one in Python — to assist with error propagation. Assuming that the input error distributions are Gaussian and that the transformations from the astrometric data to the U, V, and W velocities are sufficiently linear, we calculated the probability that each star belongs to the Galactic thin disk, thick disk, or halo. We are currently working on determining the ages of these star populations. The halo stars are the oldest of the three types; therefore, the average age of this population could give us an accurate estimate of the Milky Way’s age
Isolation of induced mutants using gamma ray and ethyl methane sulphonate in Tomato (Solanum lycopersicum L.)
No full textPresent investigation was undertaken to compare the mutagenic efficiency and effectiveness of gamma ray and ethyl methane sulphonate (EMS) and to study the frequency and spectrum of macro-mutations in tomato. For this purpose, two cultivars of tomato having widely divergent place of origin viz., Patharkutchi of West Bengal, India and Alisa Craig of England were treated with 50, 100, 150, 200 and 250Gy gamma rays and 0.05, 0.10, 0.15, 0.20 and 0.25% (V/V) EMS solution. Results showed that seed germination, seedling height and pollen fertility in M1 generation reduced steadily with the increasing doses of both mutagens. The LD50 dose for Patharkutchi and Alisa Craig was 310.7Gy and 229.7Gy gamma ray, 0.30% and 0.20% EMS concentration, respectively. Gamma ray (50Gy to 150Gy) proved to be more efficient and effective mutagen followed by 0.05% to 10% EMS treatment. Five true breeding mutants hold promise for their utilization in tomato breeding programme
Art therapy postcards:
No full textThis research article draws on a master’s thesis. This historical narrative emerges from a familial relationship with the artist Irmin Henkel, the author’s step-grandfather. Henkel was known as the official portrait painter of the 1960s apartheid government Cabinet. The approach repurposed family photographs into postcards to reflect on the past. The analytical framing of the study is grounded in inherited perpetrator trauma theories that reverberate with conditions in post-apartheid South Africa. A gap in the literature on trauma beyond apartheid is the enduring relationship between inherited perpetrator trauma and toxic shame. A heuristic self-study and arts-based approach were used as the vehicle through which I convey personal insights of my family history and drive home their meaning. My analytical approach derives from dialectical thinking as a way of grappling with more than one perspective. The creation of postcards from historical family narratives successfully uncovered three main themes: guilt, denial, and toxic shame. Because toxic shame is avoided, shunned, and kept secret, I advance a five-step protocol that art therapists could use to address inherited perpetrator trauma. However, the protocol has not been tested beyond the self-study. In extending this protocol to a broader South African society, the larger contribution of this study is to suggest the advantages of the use of the protocol in confronting inherited trauma and making toxic shame conscious, thereby preventing a repeat of past historical transgressions and encouraging healthier relationships to self, family, community and a broader South African society
Dynamic Centrality for Directed Co-author Network with Context
No full textPart 4: Data Analysis and Information RetrievalInternational audienceCo-author network is a typical example of dynamic complex network, which evolves and changes over time. One of the ways how to capture and describe the dynamics of the network is determination of Stationarity for detected communities in the network. In the paper, we have proposed the modified Stationarity, which is focused only on co-authors of a given author and not on the whole community to which the author belongs. Therefore, this modified Stationarity is defined for each author in the network and is perceived as dynamic centrality. The relations in homogeneous co-author network are not only set by the number of common publications, but are given by a context to terms used by the author extracted from the article titles. This dynamic centrality calculates with the evaluation by context of directed edges in co-author network. Such modified Stationarity gives us information about stability or dynamics of the author’s neighbourhood that influences her/him, or about the stability and dynamics of the author’s neighbourhood, which the author influences in relation to context
Magnetic bentonite composite for decolorization of methylene blue and methyl orange dye in aqueous solution / Nur Syafiqah Alisa Mohd Nizam
No full textMagnetic bentonite composite is one of the recent engineered clay materials currently developed for the treatment of dye-contaminated water. However, its efficiency against different type of dyes, structural transformation and stabilities, and practicality in treatment of real effluent are relatively unknown. This study aims to prepare the magnetic bentonite composite (MBC) using co-precipitation technique by combining bentonite and iron oxide (IO) via in situ approach. The composite’s structure, morphological and magnetic properties were characterized using spectroscopic, macroscopic and various analytical techniques like Fourier transformed infrared (FTIR) spectroscopy, X-ray Powder Diffraction (XRD), X-ray Fluorescence (XRF), Vibrating Sample Magnetometer (VSM), Scanning Electron Microscopy coupled with Energy Dispersive X-ray spectrometry (SEM-EDX), Transmission Electron Microscopy (TEM), surface area analysis using N2 adsorption-desorption isotherm and pHzpc analysis. The removal efficiencies of MBC against the cationic (Methylene Blue, MB) was investigated against experimental parameters such as pH, initial dye concentration, and contact time followed by comparison with an anionic (Methyl orange, MO) azo dye. The desorption efficiencies were investigated using different eluents such as NaCl, NaOH, HCl, ethanol, and deionized water for reusability studies. The stability and structural transformation of spent and reused MBC were elucidated via FTIR, XRD, SEM, TEM, and VSM analysis. The practicality of MBC towards removing MB in more realistic water conditions was further assessed by adsorption experiment in the artificial textile effluent. The characterization results showed that the magnetic composite exhibited a saturation magnetization of 10.6 emu/g with high degree of crystallinity as supported by the XRD analysis. The composite shows better performance (100% dye removal) towards MB removal as compared to the MO dye. The equilibrium adsorption profile has a good agreement with the Langmuir isotherm model (R2: 0.9982) and followed the pseudo-second order kinetic model (R2: 0.999). The proposed mechanism of MB adsorption on MBC were via the hydrogen bonding, π-π stacking and electrostatic attraction. Desorption of spent MBC (SMBC) using 0.1 M NaCl recorded the highest desorption efficiency (64%). SMBC demonstrates a high structural stability and minor morphological changes as evidenced by the characterization data. Three (3) adsorption-desorption cycles were successfully carried out during reusability studies. However, the magnetic strength and removal efficiency of the reused MBC (RMBC) declined to 5.5 emu/g and 50% after the final cycle. The MBC shows a 100% removal of MB in artificial textile effluent with improved water quality parameters. This composite has a great potential as a green and efficient adsorbent for water remediation especially for treating dye contaminated water. The research findings on structural transformation of magnetic clay contributes to the knowledge advancement of the environmental sustainability of engineered clay adsorbent
- …
