61 research outputs found
Um arcabouço multimodal para geocodificação de objetos digitais
No full textOrientador: Ricardo da Silva TorresTese (doutorado) - Universidade Estadual de Campinas, Instituto de ComputaçãoResumo: Informação geográfica é usualmente encontrada em objetos digitais (como documentos, imagens e vídeos), sendo de grande interesse utilizá-la na implementação de diferentes serviços. Por exemplo, serviços de navegação baseados em mapas e buscas geográficas podem se beneficiar das localizações geográficas associadas a objetos digitais. A implementação destes serviços, no entanto, demanda o uso de coleções de dados geocodificados. Este trabalho estuda a combinação de conteúdo textual e visual para geocodificar objetos digitais e propõe um arcabouço de agregação de listas para geocodificação multimodal. A informação textual e visual de vídeos e imagens é usada para definir listas ordenadas. Em seguida, elas são combinadas e a nova lista ordenada resultante é usada para definir a localização geográfica de vídeos e imagens. Uma arquitetura que implementa essa proposta foi projetada de modo que módulos específicos para cada modalidade (e.g., textual ou visual) possam ser aperfeiçoados independentemente. Outro componente é o módulo de fusão responsável pela combinação das listas ordenadas definidas por cada modalidade. Outra contribuição deste trabalho é a proposta de uma nova medida de avaliação da efetividade de métodos de geocodificação chamada Weighted Average Score (WAS). Ela é baseada em ponderações de distâncias que permitem avaliar a efetividade de uma abordagem, considerando todos os resultados de geocodificação das amostras de teste. O arcabouço proposto foi validado em dois contextos: desafio Placing Task da iniciativa MediaEval 2012, que consiste em atribuir, automaticamente, coordenadas geográficas a vídeos; e geocodificação de fotos de prédios da Virginia Tech (VT) nos EUA. No contexto do desafio Placing Task, os resultados mostram como nossa abordagem melhora a geocodificação em comparação a métodos que apenas contam com uma modalidade (sejam descritores textuais ou visuais). Nós mostramos ainda que a proposta multimodal produziu resultados comparáveis às melhores submissões que também não usavam informações adicionais além daquelas disponibilizadas na base de treinamento. Em relação à geocodificação das fotos de prédios da VT, os experimentos demostraram que alguns dos descritores visuais locais produziram resultados efetivos. A seleção desses descritores e sua combinação melhoraram esses resultados quando a base de conhecimento tinha as mesmas características da base de testeAbstract: Geographical information is often enclosed in digital objects (like documents, images, and videos) and its use to support the implementation of different services is of great interest. For example, the implementation of map-based browser services and geographic searches may take advantage of geographic locations associated with digital objects. The implementation of such services, however, demands the use of geocoded data collections. This work investigates the combination of textual and visual content to geocode digital objects and proposes a rank aggregation framework for multimodal geocoding. Textual and visual information associated with videos and images are used to define ranked lists. These lists are later combined, and the new resulting ranked list is used to define appropriate locations. An architecture that implements the proposed framework is designed in such a way that specific modules for each modality (e.g., textual and visual) can be developed and evolved independently. Another component is a data fusion module responsible for combining seamlessly the ranked lists defined for each modality. Another contribution of this work is related to the proposal of a new effectiveness evaluation measure named Weighted Average Score (WAS). The proposed measure is based on distance scores that are combined to assess how effective a designed/tested approach is, considering its overall geocoding results for a given test dataset. We validate the proposed framework in two contexts: the MediaEval 2012 Placing Task, whose objective is to automatically assign geographical coordinates to videos; and the task of geocoding photos of buildings from Virginia Tech (VT), USA. In the context of Placing Task, obtained results show how our multimodal approach improves the geocoding results when compared to methods that rely on a single modality (either textual or visual descriptors). We also show that the proposed multimodal approach yields comparable results to the best submissions to the Placing Task in 2012 using no additional information besides the available development/training data. In the context of the task of geocoding VT building photos, performed experiments demonstrate that some of the evaluated local descriptors yield effective results. The descriptor selection criteria and their combination improved the results when the used knowledge base has the same characteristics of the test setDoutoradoCiência da ComputaçãoDoutora em Ciência da Computaçã
Postharvest Technology of Guava (Psidium guajava L.) Fruits
No full text本試驗調查低溫貯藏對番石榴果實品質之影響，品種包括‘水晶拔’、‘珍珠拔’、
‘梨仔拔’、‘世紀拔’等。除‘水晶拔’、‘珍珠拔’外，貯藏於1℃及5℃下14-21 日後，
在移至25℃下3 日後，表現出嚴重寒害徵狀，而其餘供試品種貯存於1℃及5℃下
7-21 日後，在移至20-25℃下3-4 日，就有寒害症狀出現，寒害症狀表現因品種而
異：‘水晶拔’在果皮出現褐化症狀；‘珍珠拔’則表現果皮褐化及果心呈水浸狀之病
徵；‘世紀拔’則先出現果肉褐化現象，其次果皮褐化；‘泰國拔’在高濕下亦先出現果
肉褐化症狀，而貯藏末期(1℃, 21 日)才有果皮褐化症狀。‘梨仔拔’的寒害症狀計有
果實無法正常後熟、果肉褐化及果心呈水浸狀等；整體而言，番石榴耐寒性由高而
低依序為‘水晶拔’、‘珍珠拔’、‘泰國拔’、‘世紀拔’及‘梨仔拔’。低溫貯藏時，果實在
PE 袋包裝及加濕下可延緩果皮皺縮情況及果皮褐化之表現。最適貯藏溫度為5-10℃
貯藏壽命平均為14-21 天。番石榴‘水晶拔’、‘珍珠拔’等品種可利用1℃ 15 天進行
低溫檢疫並以1、5、10℃低溫貨櫃船運具7 至14 天之貯運壽命，但櫥架販售需維
持5 或10℃低溫下可維持較佳之品質。
Effects of low temperature storage and heat treatment on fruit qualities of
guava (Psidium guajava L.) were evaluated under controlled environmental
condition. Guava cultivars, ‘Li-Tzy Bar’, ‘Shyh-Jii Bar’, ‘Tai-Kuo Bar’ and
‘Jen-Ju Bar’, were used in the experiment. Symptom of chilling injury appeared
when fruits were stored at 1℃ or 5℃ for a period of 7-12 days and then placed at
20-25℃ for 3 to 4 more days. The symptoms of chilling injury were abnormal
ripening, pulp browning and water-soaking core in ‘Li-Tzy Bar’. In the case of
‘Shyh-Jii Bar’ only peel and pulp browning were observed. The water-soaking
core usually became visible at the terminal stage. Pulp browning emerged at an
early stage and then spreader to the peel of ‘Tai-Kuo Bar’ at 1℃ for 21 days.
Fruit of ‘Jen-Ju Bar’ exhibited only brown peel as well as water-soaking core.
This seemed to suggest that ‘Jen-Ju Bar’ was most chilling resistant, while
‘Tai-Kuo Bar’ was less tolerant. Cultivars such as ‘Shyh-Jii Bar’ and ‘Li-Tzy
Bar’ were found most sensitive to low temperature. In the mean time, the guava
fruit was individually wrapped up in a polyethylene bag under high humidity
condition with a view to reducing water loss and preventing sample from
shrinking
[[alternative]]The Effect of Creative Drama Instruction to Creativity and Interpersonal Communication of Elementary Gifted Students
No full text[[abstract]]This study was designed to assess the effect of Creative Drama Instruction to creativity and interpersonal communication ability of elementary gifted students. The study used the unequal-group experimental design. The sample included the 4th grade gifted students from three elementary schools in Taipei County. The experimental group participated the training courses during thirteen weeks. The controlled group is taught as usual without the extra courses.
The instruments for this study were ”New Creative Thinking Test” and ”Interpersonal Communication Scale”. And also, documents of feedback questionary, and teacher’s teaching record , were analysised to see their creativity and interpersonal communication. The results showed that:
1. The performance of the experimental group was significantly better than those of the controlled group in figure fluency, flexibility, originality, and elaboration.
2. The performance of the experimental group was significantly better than those of the controlled group in verbal fluency, flexibility, and originality.
3. There was significant effect on improving the interpersonal communication ability of the experimental group.
4. After the creative drama instruction, the subjects reported that they enjoyed the whole training course, and they also improved in creativity and interpersonal interaction.
Based on the findings, the researcher provided some suggestion in the future teaching and study.
Wayfaring: Photography in Taiwan 1950s−1980s
No full textWayfaring: Photography in Taiwan, 1950s–1980s explores four transformative decades of photography in Taiwan, tracing its evolution amid the island’s emergence from Japanese colonialism and integration into Nationalist China, largely under martial law (1949–87). Through a dozen richly illustrated essays and interviews, the book bridges the gap between vigorous Chinese-language scholarship on photography in Taiwan and its limited representation in English. Essays on photographers in the 1950s–60s, including Long Chin-San (Lang Jingshan), Deng Nan-Guang, Chang Chao-Tang, Liu An-Ming, Huang Pai-Chi, Hsu Yuan-Fu and Tsai Hui-Feng, reveal photography’s pivotal role in documenting ‘local’ culture and shaping cultural identity, while challenging ideas of ‘amateur’ and ‘realist’ practices and recognising the importance of transnational connections. Meanwhile, essays on Hsu Jen-Shiu, Lin Bo-Liang, Kao Chung-Li, Lien Hui-Ling and Hou Tsung-Hui, along with interviews sharing the firsthand experiences of Liu Chen-Hsiang, Lulu Shur-tzy Hou and Yao Jui-Chung, highlight the experience of photography in 1970s–80s Taiwan, as both witness and agent of social transformation, addressing issues such as environmental protection, mental health and gender politics, as well as being a crucial vehicle for the transdisciplinary nature of contemporary art, theatre, cinema and performance in Taiwan at that time
Between a Rock and a Cell Phone: Social Media Use during Mass Protests in Iran, Tunisia and Egypt
No full textIn this paper we examine the use of social media, and especially Twitter, in Iran, Tunisia and Egypt during the mass political demonstrations and protests in June 2009, December 2010 - January 2011, and February 2011, respectively. We compare this usage with methods and findings from other studies on the use of Twitter in emergency situations, such as natural and man-made disasters. We draw on our own experiences and participant-observations as an eyewitness in Iran (first author), and on Twitter data from Iran, Tunisia and Egypt. In these three cases, Twitter filled a unique technology and communication gap at least partially. We summarize suggested directions for future research with a view of placing this work in the larger context of social media use in conditions of crisis and social convergence
Trends in cannabis use disorders among racial/ethnic population groups in the United States
No full textAbstractBackgroundMinority groups generally experience more disparities than whites in behavioral healthcare use. The population of racial/ethnic groups is growing faster than whites. Given increased concerns of cannabis use (CU) and its associations with health conditions, we examined national trends in cannabis use disorder (CUD) among adults aged ≥18 by race/ethnicity.MethodsData were from the 2005–2013 National Surveys on Drug Use and Health (N=340,456). We compared CU patterns and the conditional prevalence of CUD among cannabis users by race/ethnicity to understand racial/ethnic variations in CUD.ResultsApproximately 1.5% of adults met criteria for a CUD in the past year. Regardless of survey year, cannabis dependence was more common than cannabis abuse, representing 66% of adults with a CUD. Across racial/ethnic groups, the prevalence of cannabis abuse and dependence remained stable during 2005–2013. In the total adult sample, the odds of weekly CU, monthly CU, and cannabis dependence were greater among blacks, native-Americans, and mixed-race adults than whites. Among cannabis users, the odds of cannabis abuse and dependence were greater among blacks, native-Americans, and Hispanics than whites. Logistic regression controlling for age, sex, education, and survey year indicated an increased trend in monthly CU and weekly CU in the total sample and among past-year cannabis users. Younger age, male sex, and low education were associated with increased odds of cannabis dependence.ConclusionsThe large sample provides robust information that indicates a need for research to monitor CUD and identify culturally appropriate interventions especially for targeting minority populations
Between a Rock and a Cell Phone: Social Media Use during Mass Protests in Iran, Tunisia and Egypt
No full textIn this paper we examine the use of social media, and especially Twitter, in Iran, Tunisia and Egypt during the mass political demonstrations and protests in June 2009, December 2010 - January 2011, and February 2011, respectively. We compare this usage with methods and findings from other studies on the use of Twitter in emergency situations, such as natural and man-made disasters. We draw on our own experiences and participant-observations as an eyewitness in Iran (first author), and on Twitter data from Iran, Tunisia and Egypt. In these three cases, Twitter filled a unique technology and communication gap at least partially. We summarize suggested directions for future research with a view of placing this work in the larger context of social media use in conditions of crisis and social convergence
番石榴果實褐化與乙烯之關係
No full text本試驗調查番石榴幼果採收後果實褐化的發生與乙烯間之關係。'梨仔拔'和'水晶拔'幼果採收後果皮逐漸變暗，由深綠色轉變為紅褐色，且二品種皆具有假性更年性(Pseudo-climacteric)的現象，並出現乙烯高峰。但當乙烯釋放率明顯上升時，酚類化合則有下降之趨勢，再以AVG及l-MCP處理幼果皆無法有效抑制果實褐化，此結果顯示，幼果採收後的褐化可能和乙烯產生無直接相關。此外，幼果採收後酚類化合物有累積現象，可能由於新陳代謝加速，促進老化，造成細胞內胞器間膜之區隔作用消失，造成褐化反應，而使幼果產生褐化現象。The objectives of this experiment were to investigate the ethylene biosynthesis and browning reactions of harvested guava fruitlets. 'Shui-Jing' and 'Li-Tzy Bar' fruitlets after harvest possessed pseudo-climacteric phenomenon with apparent peak ethylene release and accompanied peel browning. Since AVG (inhibitor of ethylene biosynthesis) and 1-MCP (inhibitor of ethylene action) treatments had no alleviation effect indicating the browning of harvested fruitlets had nothing to do with ethylene per se. in addition, phenolic compound was accumulated of fruitlets after harvest. The results suggest that owing to high catabolism and senescence induced membrane breakdown and browing reactions of fruit let after harvested
Trivial, Dialectal and Scientific Knowledges - Nomogogic Argument and Scientific Argument
No full textConhecimentos trivial, dialetal e científico - Argumento nomogógico e Argumento científico. A presente pesquisa tem por objeto, ao colocar a Teoria da Comunicação em sintaxe com a relação “sujeito / objeto” como abordada pela Teoria do Conhecimento, levantar as injunções que condicionam os graus da verossimilhança à verdade na relação “objeto / signo” e os interpretantes ocultos pelo “sujeito” de uma proposição no continente do conhecimento humano, com foco no conhecimento das disciplinas acadêmicas. A pesquisa objetiva observar e descrever quais as injunções que segmentam a utilidade, no alcance, previsão, e explicação nas descrições e proposições do sujeito trivial ao pesquisador acadêmico na ambiência física, no mercado econômico e no mercado político, implicando conhecimento trivial, conhecimento dialetal, e conhecimento científico. Sobre tal objeto, o autor superporá o método complexo físico-semiótico da Semioselogia, includente da fenomenologia Física (Heisenberg, Bohr, Lao Tzy), da Signologia (Peirce), e do Instrumento Operacional da Progmática (Modesto). Espera resultar discriminadas as sintaxes cosmológicas, mitológicas e derivações teológicas dos interpretantes da proposição do sujeito trivial ao pesquisador acadêmico e os métodos, entre a persuasão verbal e a verificação empírica, que segmentam e distinguem o alcance do conhecimento em conhecimento trivial, conhecimento dialetal, e conhecimento científico na Teoria do Conhecimento desimpedida pela físico-semiótica, aferindo-se comparativamente a condição de cientificidade sensu stricto do argumento dialetal da Nomogogia, exemplificado nas espécies étnicas de mando como Lex, Case Law, 禮 (Li), 法 (Fa), em relação ao argumento universal da Ciência e respectivas efetividades na dinâmica do mercado econômico e do mercado político. Sumário. 1. Interdependência dos Conhecimentos: dinâmica e entropia. 2. Conhecimento Trivial: Mitologia - Sócrates-Platão em Mênon. 3. Conhecimento Dialetal. 3.1. Τεχνη (Tékhne) supondo (Επιστημη) Epistéme - Platão em Timeu. 3.2. Dogmática - Sócrates-Platão em Crátilo. 3.3. Teologia - Aristóteles em Teologia (ou Primeira Filosofia). 4. Conhecimento Científico. 4.1.知識, Chih shih (conhecimento experimental han) - Lao Tzy em Tao:知測, chi tse (conhecimento medido). 4.2. Science anglo - Bacon em Novum Organum: empírico-racional. 5. Argumento dialetal da Nomogogia e Argumento universal da Ciência - Persuasão verbal e Verificação empírica. 6. Suporte: Dez Classes Sígnicas (cla) - Equações icônicas e analítica estrutural.Trivial, dialectal and scientific Knowledges - Nomogogic argument and Scientific argument. The present research has for object, by placing the Theory of Communication in syntax with the relation "subject / object" as approached by the Theory of Knowledge, to rise the injunctions that condition the degrees from the verisimilitude to the truth in the relation "object / sign" and the interpretants occult by the "subject" of a proposition in the continent of the human knowledge, with focus in the knowledge of the academic disciplines. The research objectifies observe and describe which are the injunctions that segment the usefulness, in the reach, previsibility, and explanation of the descriptions and propositions of the trivial subject to the academic researcher in the physical ambience, in the economic market and in the political market, implying trivial knowledge, dialectal knowledge, and scientific knowledge. On such object, the author will superpose the semiotics-physics complex method of the Semioselogy, including the Physics phenomenology (Heisenberg, Bohr, Lao Tzy), the Signology (Peirce), and the Progmatic Operational Instrument (Modesto). We hope to result discriminated the cosmological, mythological and theological derivations syntaxes of the interpretants of the proposition of the trivial to the academic researcher subject and the methods, among the verbal persuasion to the empiric verification, that segment and distinguish the reach of the knowledge in trivial knowledge, dialectal knowledge, and scientific knowledge in the Theory of the Knowledge disencumbered by the semiotics-physics, comparatively gauging the condition of sensu stricto scientificity of the Nomogogy dialectal argument, exemplified in the ethnic species of exact as Lex, Case Law, (Li), (Fa), in relation to the universal argument of the Science and respective effectiveness in the economic market and in the political market dynamics. Contents. 1. Interdependency of the Knowledges: dynamics and entropy. 2. Trivial Knowledge: Mythology - Socrates-Plato in Mênon. 3. Dialectal Knowledge. 3.1. (Tékhne) supposing Epistéme - Plato in Timeu. 3.2. Dogmatic - Socrates-Plato in Crátilo. 3.3. Theology - Aristotle in Theology (or First Philosophy). 4. Scientific Knowledge. 4.1. Chih shih (experimental knowledge han) - Lao Tzy in Tao: chi tse (measured knowledge). 4.2. Anglo Science - Bacon in Novum Organum: empiric-rational. 5. Dialectal argument of the Nomogogy and universal argument of the Science - Verbal persuasion and Empiric verification. 6. Support: Ten Signic Classes (cla) - Iconic Equations and structural analytics
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