Motivation Indicators of Involved Commuter Students at the University of Dayton

The purpose of this qualitative, phenomenological study is to understand the motivations of commuter students in universities and colleges in the United States who get involved in co-curricular activities, such as recognized student organizations. This study will increase the already very minimal amount of research on commuter students on college campuses and will provide insight that has not been addressed. Understanding these motivations will help professionals better understand this population of students and be able to improve practices to better address their needs. Data was collected through in person interviews (n = 5) between the researcher and students who fit the criteria of being a commuter students and involved in at least one recognized student organization. Themes that emerged from the data were that commuter students are self-motivated to get involved and the distance of their commute does not affect their motivation.https://ecommons.udayton.edu/stander_posters/2482/thumbnail.jp

A Salmonella protein causes macrophage cell death by inducing autophagy

Salmonella enterica, the causative agent of food poisoning and typhoid fever, induces programmed cell death in macrophages, a process found to be dependent on a type III protein secretion system, and SipB, a protein with membrane fusion activity that is delivered into host cells by this system. When expressed in cultured cells, SipB caused the formation of and localized to unusual multimembrane structures. These structures resembled autophagosomes and contained both mitochondrial and endoplasmic reticulum markers. A mutant form of SipB devoid of membrane fusion activity localized to mitochondria, but did not induce the formation of membrane structures. Upon Salmonella infection of macrophages, SipB was found in mitochondria, which appeared swollen and devoid of christae. Salmonella-infected macrophages exhibited marked accumulation of autophagic vesicles. We propose that Salmonella, through the action of SipB, kills macrophages by disrupting mitochondria, thereby inducing autophagy and cell death

Collaborative, Distributed Simulations of Agri-Food Supply Chains. Analysis on How Linking Theory and Practice by Using Multi-agent Structures

Simulations help to understand and predict the behaviour of complex phenomena’s, likewise distributed socio-technical systems or how stakeholders interacts in complex domains. Such domains are normally based on networked based interaction, where information, product and decision flows comes in to play, especially under the well-known supply chains structures. Although tools exist to simulate supply chains, they do not adequately support multiple stakeholders to collaboratively create and explore a variety of decision-making scenarios. Hence, in order to provide a preliminary understanding on how these interaction affects stakeholders decision-making, this research presents an study, analysis and proposal development of robust platform to collaboratively build and simulate communication among supply chain. Since realistic supply chain behaviours are complex, a multi-agent approach was selected in order to represent such complexities in a standardised manner. The platform provides agent behaviours for common agent patterns. It provides extension hotspots to implement more specific agent behaviour for expert users (that requires programming). Therefore, as key contribution, technical aspects of the platform are presented, and also the role of multi-level supply chain scenario simulation is discussed and analysed, especially under de context of digital supply chain transformation in the agri-food context. Finally, we discuss lessons learned from early tests with the reference implementation of the platform

IMPLEMENTACIÓN DE UNA MAQUINA DE VECTORES SOPORTE EMPLEANDO FPGA

En este artículo, se presenta el diseño y la implementación de una maquina de vector de soporte (SVM) sobre un dispositivo lógico programable (PLD). La maquina es utilizada para solucionar el problema de la XOR. Además, se presenta la implementación del estándar IEEE 754 para la representación de números en punto flotante. La arquitectura del sistema implementado es descrito en detalle y sintetizada sobre una tarjeta del sistema de desarrollo con un arreglo de compuerta programable por campo - FPGA (ALTERA® FLEX10K)

IMPLEMENTACIÓN DE UNA MAQUINA DE VECTORES SOPORTE EMPLEANDO FPGA

En este artículo, se presenta el diseño y la implementación de una maquina de vector de soporte (SVM) sobre un dispositivo lógico programable (PLD). La maquina es utilizada para solucionar el problema de la XOR. Además, se presenta la implementación del estándar IEEE 754 para la representación de números en punto flotante. La arquitectura del sistema implementado es descrito en detalle y sintetizada sobre una tarjeta del sistema de desarrollo con un arreglo de compuerta programable por campo - FPGA (ALTERA® FLEX10K)

IMPLEMENTACIÓN DE UNA MAQUINA DE VECTORES SOPORTE EMPLEANDO FPGA

En este artículo, se presenta el diseño y la implementación de una maquina de vector de soporte (SVM) sobre un dispositivo lógico programable (PLD). La maquina es utilizada para solucionar el problema de la XOR. Además, se presenta la implementación del estándar IEEE 754 para la representación de números en punto flotante. La arquitectura del sistema implementado es descrito en detalle y sintetizada sobre una tarjeta del sistema de desarrollo con un arreglo de compuerta programable por campo - FPGA (ALTERA® FLEX10K)

Operations management and collaboration in agri-food supply chains

Agri-food supply chains refers to the connections that exist across the agri-food stakeholders from farm to fork related processes. In this environment, operations like planning and control are critical to enhance agri-food supply chains performance and decisions, which are considered complex mainly because the presence of a high variety of information and variables that are required to be managed simultaneously. Hence, the use of a combination of methods, methodologies and multidisciplinary approaches are one of the key trends in research to handle these complexities. The purpose of this is to benefit the agri-food sector by identifying sustainable solutions that will enhance social opportunities, as well as livelihoods, local and national economies. From this, impacts are expected in terms of providing stakeholders with validated scenarios to improve agri-food supply chain resilience, establish agri-food decision-making guidelines to enhance agriculture quality delivery and strengthen agri-food stakeholders position in local and global supply chains. However, since the interdependencies between agri-food stakeholders are related to several agri-food activities, resources and systems, the establishment of collaborative business models across the agri-food supply chain has turned more important than ever, specially to support global agri-food supply chains, food safety and traceability in response to the sustainable global challenges. Therefore, aligned with the H2020 RUC-APS research project, this research focuses in addressing key decision-making challenges in agri-food supply chain environments by connecting key operations management methodologies to collaborative research approaches in the regions of Europe, Asia and South America. The objective is to identify the operations management situations where decisions are made difficult by uncertainty in the agri-food domain, within the study and implementation of Operations Management based approaches in agri-food supply chains

Semantic Support for Scenarios to Improve Communication in Agribusiness

Organizations produce and exchange a lot of critical information to obtain good results. Systems developed in different domains are adapted to be integrated when they need to exchange information. Food and agribusiness are not the exceptions, they are pioneers in the use of massive data and collaboration. One of the biggest challenges to communicate software systems is analyzing their colliding context. Every software system relies on its own context, with its rules, dynamic, and language. It is a big effort to have a complete understanding of the composed domain. Scenarios are well-known tools to describe domains and are commonly described with text. When Scenarios are built by different stakeholders it is extremely important to review them in order to unify their description. Thus, the improved Scenarios with a unified point of view make it possible an analysis to identify the relationship between two different domains. This analysis is the key to design a mechanism to exchange information. This paper proposes a semantic definition of Scenarios and a set of queries to identify issues in the Scenarios and improve their quality. We also provide a wiki platform to implement the semantic support and the queries.Publicado en IFIP Advances in Information and Communication Technology book series (IFIPAICT, volume 568)

Sorption kinetic study of selenite and selenate onto a high and low pressure aged iron oxide nanomaterial

The sorption of selenite (SeO32−) and selenate (SeO42−) onto Fe3O4 nanomaterials produced by non microwave-assisted or microwave-assisted synthetic techniques was investigated through use of the batch technique. The phase of both synthetic nanomaterials was determined to be magnetite by X-ray diffraction. The average grain sizes of non microwave-assisted and microwave-assisted synthetic Fe3O4 were determined to be 27 and 25 nm, respectively through use of the Scherrer\u27s equation. Sorption of selenite was pH independent in the pH range of 2-6, while sorption of selenate decreased at pH 5 and 6. The addition of Cl− had no significant effect on selenite or selenate binding, while the addition of NO3− only affected selenate binding to the microwave assisted Fe3O4. A decrease of selenate binding to both synthetic particles was observed after the addition of SO42− while selenite binding was not affected. The addition of PO43− beginning at concentrations of 0.1 ppm had the most prominent effect on the binding of both selenite and selenate. The capacities of binding, determined through the use of Langmuir isotherm, were found to be 1923 and 1428 mg Se/kg of non microwave-assisted Fe3O4 and 2380 and 2369 mg Se/kg of microwave-assisted Fe3O4 for selenite and selenate, respectively