Pathways to Homelessness of Homeless Women in Chile:

Thesis advisor: Shanta PandeyThesis advisor: Paulette LandonHomeless women in Chile live in high-risk situations; however, little research exists about how they face homelessness. This dissertation helps address this information gap through the inquiry into the question about what are the pathways to homelessness of homeless women in Chile? For this, a mixed-method research design has been used. The quantitative data were obtained from the Annex Questionnaire for homeless people of the Social Registry of Household, Government of Chile, updated to March 31, 2019, while the Qualitative information was obtained by conducting in-depth interviews with 4 homeless women and professionals who have worked with them in the context of their participation in social programs. The findings showed three main results: (1) The paths to homelessness for women in Chile begins with residential instability and individual adjustment to deal with it. (2) Residential instability transforms into homelessness through an extended accumulation of disadvantages and loss of significant resources and social networks. (3) Women's homelessness, even though it may become permanent or chronic, is cyclical with many entries and exits within a permanent context of residential instability.Thesis (PhD) — Boston College, 2020.Submitted to: Boston College. Graduate School of Social Work.Discipline: Social Work

Projeto de controladores de tensão e corrente para um conversor Buck utilizado no carregamento de baterias de Li-Ion

TCC (graduação) - Universidade Federal de Santa Catarina. Campus Blumenau. Engenharia de Controle e AutomaçãoO estudo e aprimoramento de metodologias para carregamento de baterias vem ganhando amplo destaque devido ao crescente aumento de aplicações elétricas móveis, tais como celulares, computadores portáteis, veículos elétricos, entre outros. De modo a garantir um carregamento seguro, diversas metodologias de controle bem como diferentes topologias de conversão de potência podem ser aplicadas. Este trabalho aborda o carregamento de baterias de íon de lítio (Li-Ion), realizando-se um breve revisão sobre os diferentes modelos e suas principais características, bem como busca dar enfâse na conversão CC-CC, devido a ser um estágio em contato direto com as baterias, sendo um dos mais cruciais. É demonstrado o desenvolvimento do conversor Buck, que é um dos mais utilizados para conversão CC-CC, bem como projetar controladores de corrente e tensão a fim de obter-se uma metodologia de carregamento conhecida como Constant Current-Constant Voltage. O trabalho também apresenta a coleta de resultados computacionais por meio do soft ware de simulação PSIM, onde se analisa diversos cenários, introduzindo-se múltiplas perturbações, a fim de se analisar a robutez do sistema projetado.The study and enhancement of charging techniques for batteries have gained wide pro minence due to the growth in mobile eletric applications, such as cellphones, portable computers, eletric vehicles, among others. In order to guarantee a safe charging, different techniques of control as well as different power conversion topologies can be applied. This work adresses the charging of Li-Ion batteries, where a brief summary of the different models and it’s main characteristics is made, as well as seeking to emphazise the CC-CC conversion, due to it being a stage in direct contact with the batteries, being one of the most crucial.The development of the Buck converter, which is one of the most used for DC-DC conversion, is demonstrated, as well as the design of current and voltage controllers in order to obtain a charging methodology known as Constant Current-Constant Voltage. The work also presents the collection of computational results through the PSIM simulation software, where different scenarios are analyzed, introducing multiple perturbations, in order to analyze the robustness of the designed system

1-(5-Acetyl-2-hy­droxy­phen­yl)ethanone

The crystal structure of the title compound, C10H10O3, is characterized by classical intra­molecular hydrogen bonding. The hy­droxy group is disordered over two positions (77 and 23%). The crystal structure is stabilized via π–π [3.5986 (1) Å] and weak nonclassical C—H⋯O inter­actions [3.2797 (15) Å]

Zur Entwicklung der jungquartären Tieflandstäler im Saale-Elbe-Raum unter besonderer Berücksichtigung von 14C-Daten

Erstmalig wurden für den Saale-Elbe-Raum — als geologisch gut erschlossenes Untersuchungsgebiet Mitteleuropas — systematisch gesammelte Proben durch Radiokarbon datiert. Somit ist es möglich, das weichseiszeitliche Alter der intakten und gekappten Niederterrasse zu bestätigen sowie die stark differenzierte holozäne Flußdynamik chronostratigraphisch zu erfassen. Die in der nacheiszeitlichen Flußgeschichte innerhalb eines komplexen Wirkungsgefüges ablaufenden Sedimentationsprozesse wurden in bestimmten Einzugsgebieten durch mittelbare anthropogene Eingriffe bereits seit neolithischer Zeit stark beeinflußt. Dies zeigt sich vor allem im Beginn und Verlauf der Auelehmakkumulation. Durch die radiometrische Datierung subfossiler Hölzer aus holozänen Flußschottern konnte ebenfalls für den mitteldeutschen Raum die Verdrängung der Kiefer durch die Eiche aus den Flußtälern bereits für das Boreal (ältestes 14C-Datum 8790 ± 140 BP) festgestellt werden. Dies stimmt gut mit Befunden aus anderen Flußgebieten vor allem des südlichen Mitteleuropas überein.researc

2,2,2-Trifluoro-1-[3-(2,2,2-trifluoro­acet­yl)azulen-1-yl]ethanone

There are two mol­ecules in the asymmetric unit of the title compound, C14H6F6O2, in which the azulene systems possess an almost planar geometry with maximum deviations of 0.0438 (15) and 0.0396 (14) Å. Besides intra- and inter­molecular C—H⋯O and C—H⋯F inter­actions, the structure displays three F⋯F contacts [2.793 (2), 2.8820 (17) and 2.9181 (16) Å]. Furthermore, a characteristic azulene π-stacking is observed with an alternating sequence of electron-rich five-membered rings and electron-deficient seven-membered rings [centroid–centroid distances = 3.5413 (12), 3.6847 (12), 3.5790 (12) and 3.7718 (12) Å]

Generation of digital elevation models using sensor images of SPOT-5 HRS to create mapping at scales 1:25,000-1:50,000

Today Chile has no elevation model (DEM) with national character. Analyzed from the point of view of science and geomatics technologies, a DEM and the orthoimages may be updated in their respective scales 1:25,000 and 1:50,000, these are essential for national development in its various applications. Due to new developments in hardware and software technology it is possible to lead towards new methods of processing and have access to satellite technology to create cartography with new parameters and elements. Based on the methodology employed by Imagine Spot for the generation of cartographic products, the proposal of this research are modifications to methodology to develop our means and get a DEM with the respective orthoimagen, which will validate the data both vertically and horizontally, thus to generate maps for the different productive and strategic areas of the country. From the results obtained it can be concluded that the proposed methodology meets all the objectives and opens a new opportunity to innovate in developing quality cartographic products

25-Allyloxy-5,11,17,23-tetra-tert-butyl-26,27,28-trihydroxycalix[4]arene chloroform disolvate

In the title solvated calixarene, C(47)H(60)O(4) x 2 CHCl(3), the host chalice displays an almost undistorted cone conformation, stabilized by three strong O-H...O hydrogen bonds at the calixarene's lower rim. One chloroform solvent molecule is fixed in the calixarene cavity by C-H...pi interactions, while the second is accommodated in a clathrate-like mode in elliptical packing voids. These voids are spanned by six host molecules connected via C-H...pi contacts and van der Waals interactions. Within the crystal structure, one tert-butyl group of the calixarene host is disordered over two orientations, with occupancies of 0.884 (4) and 0.116 (4). Furthermore, both solvent molecules show disorder, with occupancies of 0.857 (2) and 0.143 (2) for the cavitate-type, and 0.9359 (17) and 0.0641 (17) for the clathrate-type chloroform solvent molecules

TRANSBORDANDO MATEMÁTICA EM RIO DO OESTE

Não se aplica

Methyl 2-(4-chloro-3,5-dinitro­benz­amido)­acetate

The title mol­ecule, C10H8ClN3O7, is twisted with the dihedral angle between the amide and benzene ring being 38.75 (11)°. The C—N—C—C torsion angle between the amide and acetyl groups is −150.1 (2)°. Finally, each nitro group is twisted out of the plane of the benzene ring to which it is connected [O—N—C—C torsion angles = 34.0 (3) and −64.5 (3)°]. Linear supra­molecular chains along [010] and mediated by N—H⋯O hydrogen bonds between successive amide groups dominate the crystal packing. The chains are consolidated into the three-dimensional structure by C—H⋯O contacts