Widespread adoption of virtualization has resulted in an increased interest in Virtual Machine (VM) introspection. To perform useful analysis of the introspected VMs, hypervisors must deal with the semantic gap between the low-level information available to them and the high-level OS abstractions they need. To bridge this gap, systems have proposed making assumptions derived from the operating system source code or symbol information. As a consequence, the resulting systems create a tight coupling between the hypervisor and the operating systems run by the introspected VMs. This coupling is undesirable because any change to the internals of the operating system can render the output of the introspection system meaningless. In particular, malicious software can evade detection by making modifications to the introspected OS that break these assumptions. Instead, in this thesis, we introduce Architectural Introspection, a new introspection approach that does not require information about the internals of the introspected VMs. Our approach restricts itself to leveraging constraints placed on the VM by the hardware and the external environment. To interact with both of these, the VM must use externally specified interfaces that are both stable and not linked with a specific version of an operating system. Therefore, systems that rely on architectural introspection are more versatile and more robust than previous approaches to VM introspection. To illustrate the increased versatility and robustness of architectural introspection, we describe two systems, Patagonix and P2, that can be used to detect rootkits and unpatched software, respectively. We also detail Attestation Contracts, a new approach to attestation that relies on architectural introspection to improve on existing attestation approaches. We show that because these systems do not make assumptions about the operating systems used by the introspected VMs, they can be used to monitor both Windows and Linux based VMs. We emphasize that this ability to decouple the hypervisor from the introspected VMs is particularly useful in the emerging cloud computing paradigm, where the virtualization infrastructure and the VMs are managed by different entities. Finally, we show that these approaches can be implemented with low overhead, making them practical for real world deployment.

Widespread adoption of virtualization has resulted in an increased interest in Virtual Machine (VM) introspection. To perform useful analysis of the introspected VMs, hypervisors must deal with the semantic gap between the low-level information available to them and the high-level OS abstractions they need. To bridge this gap, systems have proposed making assumptions derived from the operating system source code or symbol information. As a consequence, the resulting systems create a tight coupling between the hypervisor and the operating systems run by the introspected VMs. This coupling is undesirable because any change to the internals of the operating system can render the output of the introspection system meaningless. In particular, malicious software can evade detection by making modifications to the introspected OS that break these assumptions. Instead, in this thesis, we introduce Architectural Introspection, a new introspection approach that does not require information about the internals of the introspected VMs. Our approach restricts itself to leveraging constraints placed on the VM by the hardware and the external environment. To interact with both of these, the VM must use externally specified interfaces that are both stable and not linked with a specific version of an operating system. Therefore, systems that rely on architectural introspection are more versatile and more robust than previous approaches to VM introspection. To illustrate the increased versatility and robustness of architectural introspection, we describe two systems, Patagonix and P2, that can be used to detect rootkits and unpatched software, respectively. We also detail Attestation Contracts, a new approach to attestation that relies on architectural introspection to improve on existing attestation approaches. We show that because these systems do not make assumptions about the operating systems used by the introspected VMs, they can be used to monitor both Windows and Linux based VMs. We emphasize that this ability to decouple the hypervisor from the introspected VMs is particularly useful in the emerging cloud computing paradigm, where the virtualization infrastructure and the VMs are managed by different entities. Finally, we show that these approaches can be implemented with low overhead, making them practical for real world deployment.

Thirty years ago, research in designing operating systems to defeat malicious software was very popular. The primary technique was to design and implement a small security kernel that could provide security assurances to the rest of the system. However, as operating systems grew in size throughout the 1980's and 1990's, research into security kernels slowly waned. From a security perspective, the story was bleak. Providing security to one of these large operating systems typically required running software within that operating system. This weak security foundation made it relatively easy for attackers to subvert the entire system without detection. The research presented in this thesis aims to reimagine how we design and deploy computer systems. We show that through careful use of virtualization technology, one can effectively isolate the security critical components in a system from malicious software. Furthermore, we can control this isolation to allow the security software a complete view to monitor the running system. This view includes all of the necessary information for implementing useful security applications including the system memory, storage, hardware events, and network traffic. In addition, we show how to perform both passive and active monitoring securely, using this new system architecture. Security applications must be redesigned to work within this new monitoring architecture. The data acquired through our monitoring is typically very low-level and difficult to use directly. In this thesis, we describe work that helps bridge this semantic gap by locating data structures within the memory of a running virtual machine. We also describe work that shows a useful and novel security framework made possible through this new monitoring architecture. This framework correlates human interaction with the system to distinguish legitimate and malicious outgoing network traffic.

The insecurity of modern-day software has created the need for security monitoring applications. Two serious deficiencies are commonly found in these applications. First, the absence of isolation from the system being monitored allows malicious software to tamper with them. Second, the lack of secure and reliable monitoring primitives in the operating system makes them easy to be evaded. A technique known as Virtual Machine Introspection attempts to solve these problems by leveraging the isolation and mediation properties of full-system virtualization. A problem known as semantic gap, however, occurs as a result of the low-level separation enforced by the hypervisor. This thesis proposes and investigates novel techniques to overcome the semantic gap, advancing the state-of-the-art on the syntactic and semantic view re-creation for applications that conduct passive and active monitoring of virtual machines. First, we propose a new technique for reconstructing a syntactic view of the guest OS kernel's heap state by applying a combination of static code and dynamic memory analysis. Our key contribution is the accuracy and completeness of our analysis. We also propose a new technique that allows out-of-VM applications to invoke and securely execute API functions inside the monitored guest's kernel, eliminating the need for the application to know details of the guest's internals. Our key contribution is the ability to overcome the semantic gap in a robust and secure manner. Finally, we propose a new virtualization-based event monitoring technique based on the interception of kernel data modifications. Our key contribution is the ability to monitor operating system events in a general and secure fashion.

Veidrodis mene neretai pasitelkiamas dėl simboliškai suvokiamo reflektavimo reiškinio. Šiuolaikiniame mene kombinuojant ne tik materialias medžiagas, bet ir mentalinio pobūdžio elementus, veidrodis tampa priemone įprasminti simbolinį atspindžio motyvą. Veidrodis svarbus ne tik kaip medžiaga, bet visų pirma kaip „atspindėjimo“ idėjos ir semantinių prasmių realizacija. Jis naudojamas dėl atspindžio motyvo, dėl galimybės transformuoti ar deformuoti erdvės įspūdį, keisti jos suvokimą, kurti originalų estetinį vaizdą. Tokio pobūdžio kūriniai nėra apibrėžti į vieną kryptį ar judėjimą, terminas veidrodžių menas egzistuoja dailės praktikoje kaip darbinis, nėra apibrėžiamas dailės terminų žodynuose ir nėra sunormintas. Šiame tyrime siekiama išanalizuoti, kaip veidrodžio pagalba meno kūrinyje konstruojamas savivokos ir savistabos elementas, kaip veidrodis dalyvauja autokoncepcijos kūrime, kaip menininkas „įtraukia“ žiūrovą į kūrinį arba, transformuodamas erdvę ir dezorientuodamas pasąmonę, žaidžia stebėtojo percepcija. Darbe akcentuojama semantinė veidrodinio atspindžio funkcija dailės kūriniuose. Tyrime pateikiamos teorinės idėjos – daugiausia iš Lietuvos autorių verstų, interpretuotų tekstų, kuriuose kalbama apie savęs suvokimą, antrininko vaizdinį, psichoanalizę. Šios teorijos atrinktos pagal darbo probleminius aspektus, apibendrintos ir pritaikytos veidrodžių meno teoriniam kontekstui. Magistriniame tyrime nagrinėjamas ir savivokos aspektas, per kurį saviidentifikacijos reiškinys... [toliau žr. visą tekstą] / In this research is emphasized the semantic function of reflection in art. Analyzed which significances gain reflections, optically transforming the space and how they reveal the perception of human introspection and relation with surrounding. Mirror in art often is invoked exactly due to symbolically perceptible phenomenon of reflection. In contemporary art mirror becomes the medium to give a sense to symbolical motive of reflection. The aim is to analyze how is constructed the element of introspection and self-concept, how mirror participating in founding of self-perception, how artist involves the viewer into the artwork, and how manipulates the perception of spectator by optically transforming a space and disorientating the subconsciousness by using mirror in art. In this research are presented theoretical ideas mainly from Lithuanian authors translations. Theories are sorted out by problematical aspects of research, summarized and adapted to theoretical context of mirror art. There is mentioned the idea that physical qualities of mirror could be associated with semantic meanings, so often aspect of reflexion is compared with motif of reflection as a representation of different phenomenons. The object of this research is the phenomenon of mirror art. The aim is to investigate this phenomenon in various ways and expose the role of reflection in art. This work is the first in Lithuanian art history, where is described and structured phenomenon of mirror art, justified... [to full text]

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Qualquer duvida estamos a disposição, Pãmela Tonsa 3799-7852 on 2016-04-06T16:23:52Z (GMT) / Submitted by Maria Carolina Zanette (carolzanette@gmail.com) on 2016-04-06T17:12:49Z No. of bitstreams: 1 Tese final final mesmo 3.pdf: 1821304 bytes, checksum: 6e8ee30f04b4059805d8385670f3dc80 (MD5) / Approved for entry into archive by Pamela Beltran Tonsa (pamela.tonsa@fgv.br) on 2016-04-06T18:38:23Z (GMT) No. of bitstreams: 1 Tese final final mesmo 3.pdf: 1821304 bytes, checksum: 6e8ee30f04b4059805d8385670f3dc80 (MD5) / Made available in DSpace on 2016-04-06T21:01:54Z (GMT). No. of bitstreams: 1 Tese final final mesmo 3.pdf: 1821304 bytes, checksum: 6e8ee30f04b4059805d8385670f3dc80 (MD5) Previous issue date: 2016-03-10 / This Dissertation explores why the plus size fashion field lacks legitimacy with plus size consumers. I have explored the subject in three papers. In the first paper, I study the process of legitimacy of a new emergent market, the Brazilian plus-size fashion market, and the challenges to institutionalization that it faces. I conducted seventeen interviews, performed netnography in four Brazilian plus-size fashion blogs and analyzed in a semiotic fashion an e-commerce shop that sells plus size fashion clothes. My results indicate that despite having legitimate actors promoting these plus size fashion brands, the plus size fashion field is still perceived as a shameful version of the fashion field. I argue here that the fact that one of the logics of the plus size fashion field being stigma, it affects derogatorily consumers’ identity projects in a way that prevents them from engaging in within the field cultural capital practices. In the second paper, I conducted a genealogical introspection in which I researched identity issues. As a (selfproclaimed) plus-sized woman I figured it would be relevant to look inside myself in order to explore how my identity entangles with the semiotic-material network that surrounds me in terms of both fashion, food and other elements. My data came both from concurrent and retrospective introspection techniques. In theoretical terms, I used the idea of assemblages and I focused my analysis both on the material aspects of my network of consumption and on the stability of this network. The consequences of my assemblage are linked to a total quality management of my identity, both online and offline, reflected on consumption practices that connect to the idea of a bulimic consumption logic on which food consumption and body management are interlinked. On my third paper, I examine the concept of identity from the perspective of plus size women´s consumption of fashion. Fourteen phenomenological interviews were conducted and analyzed from a hermeneutical perspective. Three thematic categories emerged from the data analysis: the construction of identity through fashion, elements of plus size identity and creative strategies to deal with the lack of products for plus size women in retail. Among the main results, the way the term plus size acts as stigma, influencing consumer´s identity projects, the role of retail in the stigmatization process and the shopping epic saga, which involves a ‘black market’ with the participation of sellers. Finally, I conclude discussing the role of identity in the instability of the plus size fashion field. / O presente trabalho explora as causas pelas quais o campo da moda plus size carece de legitimidade com as consumidoras plus size. Eu explorei o assunto em três artigos. No primeiro, eu estudo o processo de legitimação de um novo mercado emergente, o mercado da moda plus size brasileira e os desafios para sua a institucionalização. Eu conduzi dezessete entrevistas com consumidoras plus size, uma netnografia em quatro blogs de moda plus size brasileiros e analisei de maneira semiótica um site que vende roupas de moda plus size. Meus resultados indicam que, apesar de ter atores legítimos que promovem essas marcas de moda plus size, o campo da moda plus size ainda é percebido como uma versão vergonhosa do campo da moda. Defendo aqui que o fato de uma das lógicas de campo da moda plus size ser estigma, acaba afetando os projetos identitários das consumidoras de maneira depreciativa, de forma elas não se envolvem em práticas de capital cultural que ocorrem dentro do campo da moda plus size. No segundo artigo, eu conduzi uma introspecção genealógica em que eu pesquisei questões de identidade. Como uma mulher (que se assume ) plus size, eu imaginei que seria relevante para olhar para dentro de mim mesma, a fim de explorar a forma como a minha identidade liga-se com a rede semiótica-material que me rodeia em termos de moda, alimentos e outros elementos. Meus dados vieram tanto de técnicas de introspecção simultâneas, quanto retrospectivas. Em termos teóricos, eu usei a ideia de ―assemblages‖ e eu foquei minha análise tanto nos aspectos materiais da minha rede de consumo, quanto na estabilidade da rede. As consequências da minha assemblage estão ligadas a uma gestão de qualidade total da minha identidade, tanto online como off-line, refletidas em práticas de consumo que se conectam à ideia de uma lógica de consumo bulímica em que o consumo de alimentos e gestão corpo estão interligadas. Por fim, no meu terceiro artigo, eu explorei o conceito de identidade a partir do consumo da moda feminina plus size. Foram feitas catorze entrevistas fenomenológicas, cujos dados foram analisados a partir de uma perspectiva hermenêutica. Três categorias temáticas emergiram da análise de dados: a construção da identidade por meio da moda, elementos de identidade plus size e estratégias criativas para lidar com a falta de produtos para mulheres plus size no varejo. Entre os principais resultados, destacam-se a forma como o termo plus size atua como estigma, influenciando projetos de identidade das consumidoras, o papel do varejo no processo de estigmatização e a saga épica de compras, que envolve um 'mercado negro', com a participação de vendedores. Eu concluo discutindo o papel da identidade na instabilidade do campo da moda plus size.

LEAL, Wesclei Ribeiro da. A condição humana na poética de Clarice Lispector. 2017. 367f. Tese (Doutorado) – Universidade Federal do Ceará, de Pós-graduação em Letras, Fortaleza (CE), 2017. / Submitted by Gustavo Daher (gdaherufc@hotmail.com) on 2017-08-24T17:54:48Z No. of bitstreams: 1 2017_tese_wrcunha.pdf: 2436903 bytes, checksum: ecb7c1d29106e7a385159499d1781c38 (MD5) / Approved for entry into archive by Márcia Araújo (marcia_m_bezerra@yahoo.com.br) on 2017-08-25T12:34:00Z (GMT) No. of bitstreams: 1 2017_tese_wrcunha.pdf: 2436903 bytes, checksum: ecb7c1d29106e7a385159499d1781c38 (MD5) / Made available in DSpace on 2017-08-25T12:34:00Z (GMT). No. of bitstreams: 1 2017_tese_wrcunha.pdf: 2436903 bytes, checksum: ecb7c1d29106e7a385159499d1781c38 (MD5) Previous issue date: 2017 / Esta Tese pretende verificar como as narrativas construídas por Clarice Lispector (1920-1977) apreendem o que o pensador Paul Ricoeur (2010c, p.328) considera como “tempo humano”, por meio do vínculo dinâmico entre os âmbitos da introspecção e da exterioridade. Sob estudo comparativo com as narrativas de O Processo (1925) e O Castelo (1926), de Franz Kafka (1883-1924) e com o pensamento de Hannah Arendt (1906-1975), buscaremos interpretar a “condição sitiada” do “homem comum”, nos “tempos sombrios” que antecedem as Grandes Guerras aos anos que as sucedem, a fim de verificar a atualidade da Literatura de Clarice Lispector, no que diz respeito ao seu caráter “contemporâneo” (AGAMBEN: 2009, p. 62). Do entrecruzamento entre as narrativas histórica e ficcional, que compreendem a trajetória literária e cultural de Clarice Lispector, analisaremos a historicidade e as múltiplas temporalidades da narrativa clariceana, enfatizando a experiência como uma categoria fundante, originária, que se diz por meio da linguagem. Para tanto, entre suas obras, destacaremos o terceiro romance da escritora, A cidade sitiada (1949), para análise e aprofundamento do processo de construção de alegorias presentes nessa narrativa para uma interpretação das angústias existenciais das personagens, junto ao conceito de condição humana, sob o lastro dos pensamentos de Walter Benjamin (1892-1940) e Hannah Arendt, que consideramos pertinentes tanto por conta das vivências destes pensadores em face do tempo de “crise dos fundamentos da vida humana” (HOBSBAWN: 2002, p.21), a partir das concepções de Eric Hobsbawn (1917-2012) e Gilberto de Melo Kujawski, quanto por permitir uma análise comparatista em relação ao universo ficcional de Franz Kafka. Este trabalho integra a pesquisa “Histórias de Leitura: Bibliotecas Pessoais”, sob a Coordenação da Profª. Drª. Odalice de Castro Silva, do Programa de Pós-Graduação em Letras – Literatura Brasileira, da Universidade Federal do Ceará.

Tendo como objeto de estudo a ficção de Cornelio Penna, representada por Fronteira (1935), primeiro livro do escritor, esta dissertação está estruturada em duas partes. Na primeira delas é desenvolvida uma breve abordagem do ambiente de 1930, com destaque para as tensões ideológicas e políticas que dominavam a cena. Nesse contexto, são relevantes as mudanças provocadas pela chegada de Getúlio Vargas ao poder e pelo rearmamento institucional experimentado pela Igreja desde a década anterior. Esse estado de coisas se refletiu na produção cultural e, no caso específico da literatura, foi percebido pela crítica como responsável pelo estabelecimento de uma polarização entre autores regionalistas e católicos/intimistas, reproduzindo de certa forma a oposição política existente entre direita e esquerda. O que se procura problematizar aqui é a rigidez dessa categorização, que, de modo sumário, acaba por misturar escritores de orientações muito diversas. Em última instância, questiona-se a própria validade do termo romance católico, que, em função de seus contornos pouco precisos, conduz facilmente a equívocos e generalizações. A segunda parte do trabalho consiste numa leitura de Fronteira. Explorando de modo profundamente original as possibilidades do realismo psicológico, Cornelio cria um romance que destoa no ambiente marcado por obras de cunho político e documental. Ambientada no século XIX, a narrativa exibe características muito peculiares, sobretudo no que toca ao ritmo lento e a uma premente ausência de explicações para os eventos descritos. Embora manipulando elementos de ordem histórica e social, o texto introspectivo de Cornelio se mantém formalmente distante da literatura de denúncia, sendo por vezes associado, de forma indevida, ao pensamento católico conservador. Partindo de aspectos específicos do romance, como a relação problemática que se estabelece entre os indivíduos e a impossibilidade de figurarem harmoniosamente num espaço que lhes é hostil e ameaçador, a análise pretende identificar marcas constitutivas e mecanismos ficcionais que permitam compreender melhor a lógica particular que rege o funcionamento do texto corneliano / Having as an object of study the fiction of Cornelio Penna, represented by his first book, Threshold (1935), this dissertation is structured into two parts. In the first one a brief approach to the political and ideological climate of the Thirties is developed. In this context, the changes occurred with the arrival of Getúlio Vargas to power and with the institutional rearmament that Church had been experimenting since the previous decade are relevant. This state of affairs had reflections on cultural production and was seen by literary criticism as responsible for the establishment of a polarization between regionalist and Catholic/intimist authors, reproducing, to some extent, the existing left-right political opposition. The intention here is to problematize the rigidness of this categorization, which, in a hurried manner, ends up mixing writers of extremely different orientations. In the last instance, what is questioned is the validity itself of the term Catholic novel, which, because of its vague delimitations, leads easily to mistakes and generalizations. The second part of the dissertation consists of a reading of Threshold. Exploring in a deeply original way the possibilities of psychological realism, Cornelio creates a novel that does not fit in the space dominated by works with documentary and political concerns. Set in the nineteenth century, the narrative shows some quite peculiar characteristics, especially when it comes to its slow rhythm and to an anguishing lack of explanations to the depicted events. Although manipulating social and historic elements, Cornelios introspective text keeps itself formally distant from literature of denunciation, being at times inappropriately associated with conservative Catholic intellectuality. Starting from specific aspects of the novel, such as the problematic relationship that is established among individuals and the impossibility of them harmoniously being part of a space which is in fact hostile and threatening, the analysis intends to identify constitutive marks and fictional mechanisms that allow a better understanding of the particular logic that governs the functioning of Cornelios text

Tendo como objeto de estudo a ficção de Cornelio Penna, representada por Fronteira (1935), primeiro livro do escritor, esta dissertação está estruturada em duas partes. Na primeira delas é desenvolvida uma breve abordagem do ambiente de 1930, com destaque para as tensões ideológicas e políticas que dominavam a cena. Nesse contexto, são relevantes as mudanças provocadas pela chegada de Getúlio Vargas ao poder e pelo rearmamento institucional experimentado pela Igreja desde a década anterior. Esse estado de coisas se refletiu na produção cultural e, no caso específico da literatura, foi percebido pela crítica como responsável pelo estabelecimento de uma polarização entre autores regionalistas e católicos/intimistas, reproduzindo de certa forma a oposição política existente entre direita e esquerda. O que se procura problematizar aqui é a rigidez dessa categorização, que, de modo sumário, acaba por misturar escritores de orientações muito diversas. Em última instância, questiona-se a própria validade do termo romance católico, que, em função de seus contornos pouco precisos, conduz facilmente a equívocos e generalizações. A segunda parte do trabalho consiste numa leitura de Fronteira. Explorando de modo profundamente original as possibilidades do realismo psicológico, Cornelio cria um romance que destoa no ambiente marcado por obras de cunho político e documental. Ambientada no século XIX, a narrativa exibe características muito peculiares, sobretudo no que toca ao ritmo lento e a uma premente ausência de explicações para os eventos descritos. Embora manipulando elementos de ordem histórica e social, o texto introspectivo de Cornelio se mantém formalmente distante da literatura de denúncia, sendo por vezes associado, de forma indevida, ao pensamento católico conservador. Partindo de aspectos específicos do romance, como a relação problemática que se estabelece entre os indivíduos e a impossibilidade de figurarem harmoniosamente num espaço que lhes é hostil e ameaçador, a análise pretende identificar marcas constitutivas e mecanismos ficcionais que permitam compreender melhor a lógica particular que rege o funcionamento do texto corneliano / Having as an object of study the fiction of Cornelio Penna, represented by his first book, Threshold (1935), this dissertation is structured into two parts. In the first one a brief approach to the political and ideological climate of the Thirties is developed. In this context, the changes occurred with the arrival of Getúlio Vargas to power and with the institutional rearmament that Church had been experimenting since the previous decade are relevant. This state of affairs had reflections on cultural production and was seen by literary criticism as responsible for the establishment of a polarization between regionalist and Catholic/intimist authors, reproducing, to some extent, the existing left-right political opposition. The intention here is to problematize the rigidness of this categorization, which, in a hurried manner, ends up mixing writers of extremely different orientations. In the last instance, what is questioned is the validity itself of the term Catholic novel, which, because of its vague delimitations, leads easily to mistakes and generalizations. The second part of the dissertation consists of a reading of Threshold. Exploring in a deeply original way the possibilities of psychological realism, Cornelio creates a novel that does not fit in the space dominated by works with documentary and political concerns. Set in the nineteenth century, the narrative shows some quite peculiar characteristics, especially when it comes to its slow rhythm and to an anguishing lack of explanations to the depicted events. Although manipulating social and historic elements, Cornelios introspective text keeps itself formally distant from literature of denunciation, being at times inappropriately associated with conservative Catholic intellectuality. Starting from specific aspects of the novel, such as the problematic relationship that is established among individuals and the impossibility of them harmoniously being part of a space which is in fact hostile and threatening, the analysis intends to identify constitutive marks and fictional mechanisms that allow a better understanding of the particular logic that governs the functioning of Cornelios text

nÃo hà / Esta Tese pretende verificar como as narrativas construÃdas por Clarice Lispector (1920-1977) apreendem o que o pensador Paul Ricoeur (2010c, p.328) considera como âtempo humanoâ, por meio do vÃnculo dinÃmico entre os Ãmbitos da introspecÃÃo e da exterioridade. Sob estudo comparativo com as narrativas de O Processo (1925) e O Castelo (1926), de Franz Kafka (1883-1924) e com o pensamento de Hannah Arendt (1906-1975), buscaremos interpretar a âcondiÃÃo sitiadaâ do âhomem comumâ, nos âtempos sombriosâ que antecedem as Grandes Guerras aos anos que as sucedem, a fim de verificar a atualidade da Literatura de Clarice Lispector, no que diz respeito ao seu carÃter âcontemporÃneoâ (AGAMBEN: 2009, p. 62). Do entrecruzamento entre as narrativas histÃrica e ficcional, que compreendem a trajetÃria literÃria e cultural de Clarice Lispector, analisaremos a historicidade e as mÃltiplas temporalidades da narrativa clariceana, enfatizando a experiÃncia como uma categoria fundante, originÃria, que se diz por meio da linguagem. Para tanto, entre suas obras, destacaremos o terceiro romance da escritora, A cidade sitiada (1949), para anÃlise e aprofundamento do processo de construÃÃo de alegorias presentes nessa narrativa para uma interpretaÃÃo das angÃstias existenciais das personagens, junto ao conceito de condiÃÃo humana, sob o lastro dos pensamentos de Walter Benjamin (1892-1940) e Hannah Arendt, que consideramos pertinentes tanto por conta das vivÃncias destes pensadores em face do tempo de âcrise dos fundamentos da vida humanaâ (HOBSBAWN: 2002, p.21), a partir das concepÃÃes de Eric Hobsbawn (1917-2012) e Gilberto de Melo Kujawski, quanto por permitir uma anÃlise comparatista em relaÃÃo ao universo ficcional de Franz Kafka. Este trabalho integra a pesquisa âHistÃrias de Leitura: Bibliotecas Pessoaisâ, sob a CoordenaÃÃo da ProfÂ. DrÂ. Odalice de Castro Silva, do Programa de PÃs-GraduaÃÃo em Letras â Literatura Brasileira, da Universidade Federal do CearÃ.