Sistem Penunjang Keputusan Penerimaan Karyawan Baru Dengan Metode Profile Matching

One of the most important activities in a company or organization is the human resources. The recruitment process is a strategic stage to identify the appropriate candidates. When the recruitment process is not conducted properly, the new employees will not meet the criteria expected by the company.a decision support system application for a new employee recruitment in this research was built using the Profile Matching Method. In general, the Profile Matching Process is the process of comparing competencies between individuals and jobs or occupations to determine the suitability. The comparison was made by calculating the test scores of the recruits to get the rating scores that would serve as references in determining the decisions in the recruitment process.In applying the Profile Matching Method, determining the weight value for each aspect of the test greatly affects the final calculation of the ranking value of each employee, therefore the determination of the greatest weight value will be given to the priority aspects of the test in order to obtain the results of the selection according to the predetermined priorities according to the company's needs.Keywords: employee selection, profile matching, decision support syste

The importance of training EFL teachers for affect teaching strategies

The purpose of this study is to identify whether there is a relationship between the use of affect teaching strategies and consequently an increase in the language learning motivation/proficiency. Raising teachers’ awareness to the relevance of affective issues is a priority, which will be reflected in the creation of a supportive classroom atmosphere in which learners can be encouraged to do better, to work harder in an effort to reach their full learning potential. However, prior to understanding teachers’, learners’ perceptions needed to be analyzed to be able to confront both. A screening model was used in this qualitative research study. Additional tools like questionnaires were also applied in order to: (a) establish a relation between teaching strategies which promote affect and students’ reactions to them; (b) study EFL teachers’ concrete perceptions on the concept of teaching strategies which promote affect; (c) understand if and how EFL teachers are applying affect teaching strategies while specifying which ones; (d) establish the importance of integrating affect in EFL teachers’ training. Since Russia initiated a full-size military invasion into Ukraine on February 24, 2022, millions of Ukrainians were forced to flee to neighboring countries (mostly women and children). The hosting countries, including Portugal allowed for Ukrainian learners immediate integration in their national schooling systems, thus changing educators’ teaching realities. This has led me to reflect on the relevance of affect in a situation of war/refugee crisis. It became therefore relevant to understand to what extent ELT teachers felt prepared to embrace this new multicultural and sensitive educational context and to question if EFL educators specific training on refugee affect teaching strategies is not a current necessity

Vitimação criminal nos Campi Universitários (UMinho) : da prevalência às medidas de autoproteção

Dissertação de mestrado integrado em Psicologia (área de especialização em Psicologia da Justiça)Face às estatísticas oficiais de criminalidade, os inquéritos de vitimação criminal apresentam-se como um instrumento de mensuração alternativo que permite a deteção de muita criminalidade oculta. A investigação internacional sobre a vitimação em campi universitários tem-se dedicado ao estudo da prevalência de criminalidade neste contexto específico. O presente estudo tem como objetivo captar a prevalência de vitimação criminal no ano letivo 2009/2010, junto dos seus utilizadores (alunos, professores e staff) nos campi universitários da Universidade do Minho. Simultaneamente, procura analisar as modalidades criminais com maior expressão, os segmentos da população mais vitimados, as características do ofensor, as circunstâncias espaciais e temporais do delito, o impacto decorrente da experiência da vitimação sofrida e a posição da vítima face à denúncia do crime. O estudo procurou, ainda, captar as perceções de (in) segurança dos participantes face ao campus ao qual estão vinculados pelas suas atividades académicas ou profissionais. Para tal, foi construído o inquérito Campi Universitários (UM): Vitimação Criminal e Perceção de (In) Segurança (Costa, Matos & Mendes, 2011), administrado a uma amostra de 1001 participantes. Os resultados documentam que 10.3% dos participantes foram alvo de, pelo menos, um episódio de vitimação criminal nesse ano e que 41.6% observou vitimação criminal contra terceiros (bens ou pessoas) nos campi universitários da UM (o crime de injúria foi o mais experienciado e observado).A vítima de crime é, tipicamente, do sexo feminino, de nacionalidade portuguesa, jovem adulta, solteira, estudante e com escolaridade superior, à exceção das vítimas do crime de coação, as quais apresentam algumas especificidades diferenciadoras (e.g., adulto, com união civil formalizada e não aluno). Das vítimas, 41.8% recorreram a medidas de autoproteção após a experiência de vitimação criminal. Quanto à participação dos factos, apenas uma pequena percentagem de vítimas optou por essa prática (14.9%), quer junto das entidades da UM, quer às entidades judiciais. O ofensor é, habitualmente, descrito pelas vítimas como sendo um indivíduo do sexo masculino, desconhecido (à exceção do crime de coação, no qual é conhecido das vítimas) e que não recorre a armas durante o episódio criminal. Maioritariamente os delitos foram perpetrados em período diurno e o mês de Maio destacou-se pela maior frequência. Amplamente demonstrada a eficácia de medidas de prevenção situacional do crime em estudos internacionais, avançamos com algumas sugestões finais dirigidas especificamente aos hot spots criminais que este inquérito de vitimação permitiu identificar.Criminal victimization surveys are presented as an alternative measurement tool which allows the detection of many hidden criminality. The international research regarding victimization on college campi has been showing the crime prevalence in this particular context. This study aimed to capture the criminal victimization prevalence, occurred in the year 2009/2010, between the members of the University of Minho (students, faculty and staff). Simultaneously this study examined the most prevalent crimes, and the most victimized groups, as well as the victimization impact, victims’ position towards crime complaint, and finally the characteristics of the offender and the spatial and temporal circumstances of the offense. Furthermore, the study also assessed participants’ perceptions concerning caumpus security. To reach these proposes, we developed a survey entitled “University Campus (UM): Criminal Victimization and Perception of (In)Security (Costa Matos & Mendes, 2011). The survey was completed by a sample of 1001 participants. The results revealed that 10.3% of participants experienced at least one episode of criminal victimization during the assessed period and 41.6% of participants observed criminal victimization against other at the UM campus. The victim was typically a single young female, with Portuguese nationality and a student in this higher education institution. An exception to this profile was found concerning coercion victimization, wherein victims are usually adults, in formal relationships, and not students. From the victims group, 41.8% reported the use of self-protection measures after the criminal episode. The results also demonstrated that only a small percentage of the victims (14.9%) reported the incident to UM officials or law enforcement agencies. The offender was usually described by the victims as an unknown male individual (with exception of coercion crimes where the offender is known by the victims) who did not use weapons during the crime episode. The crimes were committed mostly during the day, being May the month with higher crimes’ frequency. Supported by international studies that demonstrated the effectiveness of crime’s situational prevention strategies against, we proposed some final suggestions towards the criminal hot spots based on the results of our victimization survey

Optimization of chitosan-hydroxyapatite-based bioinks for potential 3d bioprinting application in bone tissue regeneration

With the passing of the years, scientific evolution has contributed many times to medicine by providing solutions to, what seemed to be, life-long problems for patients. Not all health problems can be fixed with traditional treatments, as not all complications are caused by drug treated diseases. This is especially true with bone related issues. Age, accidents or birth defects can all be at fault for serious skeletal defects that cannot be treated on their own. This necessity to create further solutions to aid in medicine, arose an interest in the scientific community. Fast forward to this day and age, we can now count on a vast number of options to help in bone repair and regeneration, particularly 3D bioprinted scaffolds. In this study, the main goal was to create and optimize a biomaterial that could be used as an ink to create 3D bioprinted structures for future bone regeneration application. The material used consisted of a chitosan (Ch) -based hydrogel with the incorporation of hydroxyapatite (HA), which is known as the most common calcium phosphate present in human bone. Synthetic HA (SYN_HA) was synthesized and showed to be a suitable material for hydrogel preparation; natural HA (NAT_HA) from tuna fish bones, however, also looked as a very interesting alternative, although it still requires some additional work. In the future, with optimized preparation conditions, it would be more sustainable option for patients. Several tests were performed on the hydrogel, to optimize its composition, in particular the most appropriate concentration of HA to include in the hydrogel itself. Tests on the nanocrystals to assess their purity and crystallinity as well the particle size were performed. These were followed by experiments to compare hydrogels with two final HA percentages: 0.125% wt/vol and 0.25% wt/vol. The following analysis were performed: a stability test to study in vitro hydrogel degradation kinetics under physiological conditions; pH, homogeneity and polymerization assessments; a compression test to evaluate mechanical properties of the hydrogel, particularly the stiffness; a bioprintability test, by a hand-extrusion method, that assessed its capability to form fibers without merging, to form 3D constructs. All of these were pre-conditions to determine if they would behave well as a biomaterial ink and for future use on cell viability trials. The ultimate test was the bioprinting of the material where the parameters were optimized, to guarantee a successful reproduction of the printed structures every time. Results showed that the biomaterial with the best concentration of SYN_HA was the 0.125% wt/vol one, as it had the most satisfactory results in all tests performed, confirming it can be used for bioprinting purposes.Com o passar dos anos, a evolução científica contribuiu muitas vezes para a medicina, fornecendo soluções, para o que pareciam ser, problemas para toda a vida. Nem todos os problemas de saúde podem ser resolvidos com tratamentos tradicionais, pois nem todas as complicações são causadas por doenças tratadas com medicamentos. Isto é especialmente verdade com problemas relacionados com os ossos. Idade, acidentes ou defeitos congênitos podem ser culpados por deformidades esqueléticas graves que não podem ser tratadas por conta própria. Esta necessidade de criar novas soluções para auxiliar na medicina, despertou o interesse da comunidade científica. Atualmente, podemos contar com um grande número de opções para ajudar no reparo e regeneração óssea, particularmente scaffolds 3D bioimpressos. Neste estudo, o principal objetivo foi criar e otimizar um biomaterial que pudesse ser usado como bioink para criar estruturas bioimpressas em 3D para futura aplicação em regeneração óssea. O material utilizado consistiu num hidrogel à base de quitosano com incorporação de hidroxiapatita (HA), que é conhecido como o fosfato de cálcio mais comum presente no osso humano. A HA sintética (SYN_HA) foi sintetizada e mostrou ser um material adequado para a preparação de um hidrogel; HA natural (NAT_HA) de espinhas de atum, no entanto, também se mostrou uma alternativa muito interessante, embora ainda exija algum trabalho adicional. No futuro, com condições de preparo otimizadas, seria uma opção mais sustentável para os pacientes. Vários testes foram realizados no hidrogel, para otimizar a sua composição, em particular a concentração de HA mais adequada para incluir no próprio hidrogel. Foram realizados testes nos nanocristais para avaliar sua pureza e cristalinidade, bem como o tamanho das partículas. Estes foram seguidos por testes para comparar hidrogéis com duas percentagens finais de HA: 0.125% p/vol e 0.25% p/vol. As seguintes análises foram realizadas: um teste de estabilidade para estudar a cinética de degradação do hidrogel in vitro em condições fisiológicas; análise de pH, homogeneidade e polimerização; um teste de compressão para avaliar as propriedades mecânicas do hidrogel, particularmente a rigidez; um teste de bioimpressão, pelo método de extrusão manual, que avaliou a sua capacidade de formar fibras sem se misturar, para formar construções 3D. Todas estas eram pré-condições para determinar se os hidrogéis se comportariam bem como uma biomaterial ink e para uso futuro em testes de viabilidade celular. O teste final foi a bioimpressão do material onde os parâmetros foram otimizados, para garantir sempre uma reprodução bem-sucedida das estruturas impressas. Os resultados mostraram que o biomaterial com melhor concentração de SYN_HA foi o de 0.125% p/vol, pois apresentou os resultados mais satisfatórios em todos os testes realizados, confirmando que pode ser utilizado para fins de bioimpressão

Products of i.i.d. random matrices and a theorem by Furstenberg

Mestrado Bolonha em Mathematical FinanceWe study the Lyapunov exponents associated to the product of i.i.d. random matrices linear cocyle in SL±(2,R). The existence of these quantities and conditions to guarantee strict positivity are established. These results are used to prove the exponential growth of a random Fibonacci sequence.info:eu-repo/semantics/publishedVersio

A sound is worth a thousand words : exploring the taxonomic and causal link between emotions and sound objects

This investigation's object is the relation between emotion and sound and how the latter can be understood through an emotion-oriented study. Psychological investigations strive to understand how the world affects people and how people, in turn, understand the world on the grounds of their own reflections and interpretations. Thus, an emotional understanding of sound is inevitably linked to the concept of perceived emotion. This dissertation's purpose is to understand whether there is a taxonomic relation between sounds and perceived emotions. To this aim, emotional semantics and proposals for emotional categorization are approached, as well as studies on sound categorization and its relation with experiments between emotion and sound or music. Two studies investigated the aforementioned themes. In Experiment 1, participants rated sound-image pairs in a causaloriented environment, followed by a similar recall task, with the aim of understanding the connection between the listener and a sound's semantic content. In Experiment 2, participants rated a group of sounds, half of which were masked to hide their semantic content, with the goal of understanding the importance of semantic content in auditory stimuli. Taken together, the data suggest that some emotions cannot be transmitted by sound alone and that it takes a combination of the listener, the context, and the sound's physical features in order to get a complete understanding of perceived emotions

Caracterização das comunidades de protozoários e metazoários em ETAR domésticas e industriais de São Miguel : relação de eficiência de remoção e condições de operação

Mestrado (Trabalho de Projeto), Engenharia e Gestão de Sistemas de Água, 25 de outubro de 2019, Universidade dos Açores.O tratamento de águas residuais por lamas ativadas é o processo mais utilizado em todo o mundo e consiste no fornecimento constante de matéria orgânica e oxigénio a uma comunidade de microrganismos, que através do seu metabolismo, transformam essa matéria orgânica em nova biomassa microbiana e compostos inorgânicos, dos quais se destacam o dióxido de carbono e os compostos de azoto e de fósforo. Neste processo de tratamento biológico é importante compreender a estrutura e o funcionamento da comunidade microbiológica, assim como da sua rede trófica. Além das bactérias, que são responsáveis pela decomposição da matéria orgânica, existem diferentes populações de protozoários e metazoários que se podem desenvolver no tanque de arejamento. A sua presença é fundamental para o bom desempenho da ETAR, pois estimulam o crescimento bacteriano e, promovem a floculação, reduzindo a turvação do efluente tratado. Este trabalho de projeto teve como objetivo principal analisar as comunidades de protozoários e metazoários nas ETAR de Lamas Ativadas em funcionamento na ilha de São Miguel e relacionar o tipo de microrganismos com a eficiência de remoção registada e com as condições de operação (parâmetros físico-químicos no reator biológico). Iniciou-se este trabalho fazendo o levamento das ETAR existentes em São Miguel, contactando as entidades gestoras e dando a conhecer os objetivos do estudo pretendido. Com a lista de ETAR organizada, elaborou-se um plano de visitas e amostragens às ETAR, para recolha de amostras de licor misto, para análise de parâmetros biológicos e físico-químicos. Em cada uma das ETAR estudadas realizaram-se seis colheitas, a partir das quais se efetuaram as análises microscópicas e o cálculo do Índice Biológico de Lamas (IBL), segundo a metodologia proposta por Madoni. De um modo geral, as comunidades microbiológicas das várias ETAR comportaram-se de acordo com os resultados relativos à comunidade de protozoários e metazoários, especialmente no que refere à associação dos grupos funcionais com a qualidade do efluente. Os ciliados sésseis, móveis de fundo e as amibas com teca foram os grupos funcionais mais frequentes nas ETAR com efluentes de boa qualidade. Por outro lado, as ETAR com uma qualidade menor da água residual tratada, apresentavam frequentemente Opercularia sp. e ciliados nadadores. Para algumas ETAR estudas, o IBL não se traduziu numa ferramenta muito eficaz para a avaliação da qualidade do efluente tratado. Contudo, o IBL forneceu sempre informações importantes sobre a abundância e a densidade da comunidade de protozoários e metazoários, sendo uma valiosa ferramenta na análise do desempenho da ETAR.ABSTRACT: The activate sludge process for wastewater treatment, use the microorganisms metabolism to, transform biodegradable organic matter into microbial biomass and inorganic compounds, such as carbon dioxide, nitrogen and phosphorus compounds. In this biological treatment process, it is important to understand the structure and functioning of the microbiological community, as well as its trophic network. In addition to bacteria, which are responsible for the decomposition of organic matter, there are different populations of protozoa and metazoans that can develop in the aeration tank. Its presence is fundamental for the proper functioning of the WWTP, as it stimulates bacterial growth, promotes flocculation, reduces turbidity of the treated effluent. This master course project had, as main objective, to analyse the communities of protozoa and metazoa in the activated sludge plant in operation in São Miguel Island and to relate the type of microorganisms with the registered removal efficiency and the operating conditions (the physical-chemical characteristics of mixed liquor). This work was started by carrying out the existing WWTP in São Miguel, contacting the management entities and informing the objectives of the intended study. With the list of WWTPs organized, a plan of visits and samplings to the WWTP was elaborated, to measure the physical-chemical parameters of mixed liquor and collect samples for analysis of biological parameters. In each of the WWTPs, six samples were taken, from which the microscopic analysis and IBL calculation were performed, according to the methodology proposed by Madoni. In general, the microbiological communities of the studied WWTPs behave according to the results of the protozoan and metazoan community, especially regarding the association of functional groups with effluent quality. The sessile cilia, crawling and the amibas with teak were the most frequent functional groups in WWTP with good quality effluents. On the other hand, WWTPs with a lower quality of treated wastewater often had Opercularia sp. and ciliates swimmers. For some WWTPs studied, the IBL did not translate into a very effective tool for evaluating the quality of the treated effluent. However, the IBL has always provided important information on the abundance and density of the protozoa and metazoan community and is a valuable tool in the analysis of the performance of the WWTP