312 research outputs found
COMPUTER UTILIZATION AS A BALANCED OPPONENT IN DAM-DAM-AN
Dam-dam-an is a traditional game played by two players using a board with the size of 8x8 as a media. Each player gets 16 pieces that can be moved one step forward or leaped over opponent‟s piece. The goal of this game is to eliminate all of our pieces as soon as possible. It is exciting to have a challenging opponent, yet it is difficult to find a skillful one. A way to solve this problem is using intelligent computer. This paper presents the result of our research about the computer utilization as balanced opponent in dam-dam-an game using Alpha-Beta Pruning. Alpha-Beta Pruning is a best-step searching algorithm which works by considering and assessing every possibility while excluding the less useful steps. The implementation is developed using C# programming language based on Windows Runtime. Some features were added to make this game more exciting, particularly intelligence level selection (easy, medium, and hard), human or computer opponent selection, undo function, pausing menu, save-load the game, and setting the turning time. This game was validated by twenty respondents which were categorized based on their skill. Each respondent played against the computer thrice and the results were recorded. The results showed that the number of winning between the computer and each player are almost the same. It shows that the computer opponent may prove itself to be a challenging opponent for human player
Faculty Publications and Creative Works 2001
One of the ways in which we recognize our faculty at the University of New Mexico is through Faculty Publications & Creative Works. An annual publication, it highlights our faculty\u27s scholarly and creative activities and achievements and serves as a compendium of UNM faculty efforts during the 2001 calendar year. Faculty Publications & Creative Works strives to illustrate the depth and breadth of research activities performed throughout our University\u27s laboratories, studios and classrooms. We believe that the communication of individual research is a significant method of sharing concepts and thoughts and ultimately inspiring the birth of new ideas. In support of this, UNM faculty during 2001 produced over 2,299* works, including 1,685 scholarly papers and articles, 69 books, 269 book chapters, 184 reviews, 86 creative works and 6 patented works. We are proud of the accomplishments of our faculty which are in part reflected in this book, which illustrates the diversity of intellectual pursuits in support of research and education at the University of New Mexico
Performance Evaluation of Smart Decision Support Systems on Healthcare
Medical activity requires responsibility not only from clinical knowledge and skill but
also on the management of an enormous amount of information related to patient care. It is
through proper treatment of information that experts can consistently build a healthy wellness
policy. The primary objective for the development of decision support systems (DSSs) is
to provide information to specialists when and where they are needed. These systems provide
information, models, and data manipulation tools to help experts make better decisions in a
variety of situations.
Most of the challenges that smart DSSs face come from the great difficulty of dealing
with large volumes of information, which is continuously generated by the most diverse types
of devices and equipment, requiring high computational resources. This situation makes this
type of system susceptible to not recovering information quickly for the decision making. As a
result of this adversity, the information quality and the provision of an infrastructure capable
of promoting the integration and articulation among different health information systems (HIS)
become promising research topics in the field of electronic health (e-health) and that, for this
same reason, are addressed in this research. The work described in this thesis is motivated
by the need to propose novel approaches to deal with problems inherent to the acquisition,
cleaning, integration, and aggregation of data obtained from different sources in e-health environments,
as well as their analysis.
To ensure the success of data integration and analysis in e-health environments, it
is essential that machine-learning (ML) algorithms ensure system reliability. However, in this
type of environment, it is not possible to guarantee a reliable scenario. This scenario makes
intelligent SAD susceptible to predictive failures, which severely compromise overall system
performance. On the other hand, systems can have their performance compromised due to the
overload of information they can support.
To solve some of these problems, this thesis presents several proposals and studies
on the impact of ML algorithms in the monitoring and management of hypertensive disorders
related to pregnancy of risk. The primary goals of the proposals presented in this thesis are
to improve the overall performance of health information systems. In particular, ML-based
methods are exploited to improve the prediction accuracy and optimize the use of monitoring
device resources. It was demonstrated that the use of this type of strategy and methodology
contributes to a significant increase in the performance of smart DSSs, not only concerning precision
but also in the computational cost reduction used in the classification process.
The observed results seek to contribute to the advance of state of the art in methods
and strategies based on AI that aim to surpass some challenges that emerge from the integration
and performance of the smart DSSs. With the use of algorithms based on AI, it is possible to
quickly and automatically analyze a larger volume of complex data and focus on more accurate
results, providing high-value predictions for a better decision making in real time and without
human intervention.A atividade médica requer responsabilidade não apenas com base no conhecimento
e na habilidade clínica, mas também na gestão de uma enorme quantidade de informações
relacionadas ao atendimento ao paciente. É através do tratamento adequado das informações
que os especialistas podem consistentemente construir uma política saudável de bem-estar. O
principal objetivo para o desenvolvimento de sistemas de apoio à decisão (SAD) é fornecer informações
aos especialistas onde e quando são necessárias. Esses sistemas fornecem informações,
modelos e ferramentas de manipulação de dados para ajudar os especialistas a tomar melhores
decisões em diversas situações.
A maioria dos desafios que os SAD inteligentes enfrentam advêm da grande dificuldade
de lidar com grandes volumes de dados, que é gerada constantemente pelos mais diversos
tipos de dispositivos e equipamentos, exigindo elevados recursos computacionais. Essa situação
torna este tipo de sistemas suscetível a não recuperar a informação rapidamente para a
tomada de decisão. Como resultado dessa adversidade, a qualidade da informação e a provisão
de uma infraestrutura capaz de promover a integração e a articulação entre diferentes sistemas
de informação em saúde (SIS) tornam-se promissores tópicos de pesquisa no campo da saúde
eletrônica (e-saúde) e que, por essa mesma razão, são abordadas nesta investigação. O trabalho
descrito nesta tese é motivado pela necessidade de propor novas abordagens para lidar
com os problemas inerentes à aquisição, limpeza, integração e agregação de dados obtidos de
diferentes fontes em ambientes de e-saúde, bem como sua análise.
Para garantir o sucesso da integração e análise de dados em ambientes e-saúde é
importante que os algoritmos baseados em aprendizagem de máquina (AM) garantam a confiabilidade
do sistema. No entanto, neste tipo de ambiente, não é possível garantir um cenário
totalmente confiável. Esse cenário torna os SAD inteligentes suscetíveis à presença de falhas
de predição que comprometem seriamente o desempenho geral do sistema. Por outro lado, os
sistemas podem ter seu desempenho comprometido devido à sobrecarga de informações que
podem suportar.
Para tentar resolver alguns destes problemas, esta tese apresenta várias propostas e
estudos sobre o impacto de algoritmos de AM na monitoria e gestão de transtornos hipertensivos
relacionados com a gravidez (gestação) de risco. O objetivo das propostas apresentadas nesta
tese é melhorar o desempenho global de sistemas de informação em saúde. Em particular, os
métodos baseados em AM são explorados para melhorar a precisão da predição e otimizar o
uso dos recursos dos dispositivos de monitorização. Ficou demonstrado que o uso deste tipo
de estratégia e metodologia contribui para um aumento significativo do desempenho dos SAD
inteligentes, não só em termos de precisão, mas também na diminuição do custo computacional
utilizado no processo de classificação.
Os resultados observados buscam contribuir para o avanço do estado da arte em métodos
e estratégias baseadas em inteligência artificial que visam ultrapassar alguns desafios que
advêm da integração e desempenho dos SAD inteligentes. Como o uso de algoritmos baseados
em inteligência artificial é possível analisar de forma rápida e automática um volume maior de
dados complexos e focar em resultados mais precisos, fornecendo previsões de alto valor para uma melhor tomada de decisão em tempo real e sem intervenção humana
Smart and Pervasive Healthcare
Smart and pervasive healthcare aims at facilitating better healthcare access, provision, and delivery by overcoming spatial and temporal barriers. It represents a shift toward understanding what patients and clinicians really need when placed within a specific context, where traditional face-to-face encounters may not be possible or sufficient. As such, technological innovation is a necessary facilitating conduit. This book is a collection of chapters written by prominent researchers and academics worldwide that provide insights into the design and adoption of new platforms in smart and pervasive healthcare. With the COVID-19 pandemic necessitating changes to the traditional model of healthcare access and its delivery around the world, this book is a timely contribution
Interplay between inflammation and calcification in cardiovascular diseases
Cardiovascular calcification has been linked to all-cause mortality and is a broadly adopted
predictor of cardiovascular (CV) events. Rather than a mere by-product of the changing
disease environment, calcification impacts actively the disease progression and pathogenesis
as it predominates both in early- and late-stages, through mediating tissue biomechanical
destabilisation and directly impacting tissue inflammation. However, its clinical contribution
to the fate of the disease remains to be elucidated. Emerging body of evidence from both
basic and clinical research has demonstrated the significance of the innate immune system in
cardiovascular diseases (CVDs). Here, inflammation and calcification are engaged in a
vicious cycle particularly at early-stages, whereas in advanced-lesions, large calcifications
linked with suppressed inflammation and plaque stability. However, this interaction during
disease progression remains largely elusive. The aim of this thesis is to investigate the
interplay between inflammation and calcification in advanced atherosclerosis and calcific
aortic valve disease (CAVD).
Study I explores gene and protein expression signatures and biological pathways of advanced
CAVD lesions in order to characterise the underlining mechanisms associated with the
disease pathology. Multi-omics integration of overlapping transcriptome/proteome
molecules with miRNAs, identified a unique CAVD-related protein-protein 3D layered
interaction network. After addition of a metabolite layer, Alzheimer's disease (AD) was
identified in the core of the gene-disease network. This study suggests a novel molecular
CAVD network potentially linked to amyloid-like structures formation.
Study II characterises osteomodulin (OMD) in the context of atherosclerosis, chronic kidney
disease (CKD) and CAVD. Plasma OMD levels were correlated with markers of
inflammation and bone turnover, with the protein being present in the calcified arterial media
of patients with CKD stage 5. Circulating OMD levels were also associated with cardiac
valve calcification in the same patients and its positive signal was detected in calcified valve
leaflets by immunohistochemistry. In patients with carotid atherosclerosis, plasma OMD
levels were increased in association with plaque calcification as assessed by computed
tomography. Transcriptomic and proteomic data analysis showed that OMD expression was
upregulated in atherosclerotic compared to non-atherosclerotic control arteries, and
particularly in highly calcified plaques, where its expression correlated positively with
markers of vascular smooth muscle cells (VSMCs) and osteoblasts. In vivo, OMD was
enriched in VSMCs around calcified nodules in aortic media of nephrectomised rats and in
plaques from ApoE-/- mice on warfarin. In vitro experiments revealed that exogenous
administration of recombinant human OMD protein repressed the calcification process of
VSMCs treated with phosphate by maintaining the VSMC contractile phenotype along with
enriched extracellular matrix (ECM) organisation, thereby attenuating VSMC osteoblastic
transformation.
Study III analyses OMD expression in human carotid plaques and particularly its link with
future CV events. Transcriptomic analysis revealed that OMD levels were increased in
plaques from asymptomatic patients compared to symptomatic ones, with high levels being
associated with fewer CV events in a follow-up analysis.
Study IV investigates the link between mast cell (MC) activation and key features of human
plaque vulnerability, and the role of MC in VSMC-mediated calcification. Integrative
analyses from a large biobank of human plaques showed that MC activation is inversely
associated with macrocalcification and positively with morphological parameters of plaque
vulnerability. Bioinformatic analyses revealed associations of MCs with NK cells and other
immune cells in plaques. Mechanistic in vitro experiments showed that calcification
attenuated MC activation, while both active and resting MCs induced VSMC calcification
and triggered their dedifferentiation towards a pro-inflammatory- and osteochondrocyte-like
phenotype.
Overall, this thesis demonstrates that the underlying mechanisms of CVD related to
inflammation and calcification can be comprehensively characterised by integration of largescale
multi-omics datasets along with cellular and molecular assays on one side, and disease
specific biomarkers and advanced diagnostic imaging tools on the other. In summary, these
studies not only indicate that advanced-calcification is a stabilising factor for plaque and
disease progression but also, unveil novel insights into the cardiovascular calcification
pathobiology, and offer promising biomarkers and new therapeutic avenues for further
exploration
Deprescribing tool for STOPPFall (screening tool of older persons prescriptions in older adults with high fall risk) items
Background: Health care professionals are often reluctant to deprescribe fall-risk-increasing drugs (FRIDs). Lack of knowledge and skills form a significant barrier. To support clinicians in the management of FRIDs and to facilitate the deprescribing process, a deprescribing tool was developed by a European expert group for STOPPFall (Screening Tool of Older Persons Prescriptions in older adults with high fall risk) items.
Methods: STOPPFall was created using an expert Delphi consensus process in 2019 and in 2020, 24 panellists from EuGMS SIG on Pharmacology and Task and Finish on FRIDs completed deprescribing tool questionnaire. To develop the questionnaire, a Medline literature search was performed. The panellists were asked to indicate for every medication class a possible need for stepwise withdrawal and strategy for withdrawal. They were asked in which situations
withdrawal should be performed. Furthermore, panellists were requested to indicate those symptoms patients should be monitored for after deprescribing and a possible need for follow-ups.
Results: Practical deprescribing guidance was developed for STOPPFall medication classes. For each medication class, a decision tree algorithm was developed including steps from medication review to symptom monitoring after medication withdrawal.
Conclusion: STOPPFall was combined with a practical deprescribing tool designed to optimize medication review. This practical guide can help overcome current reluctance towards deprescribing in clinical practice by providing an up-to-date and straightforward source of expert knowledge
Association between number of medications and mortality in geriatric inpatients : a Danish nationwide register-based cohort study
Purpose: To explore the association between the number of medications and mortality in geriatric inpatients taking activities of daily living and comorbidities into account.
Methods: A nationwide population-based cohort study was performed including all patients aged C65 years admitted to geriatric departments in Denmark during 2005-2014. The outcome of interest was mortality. Activities of daily living using Barthel-Index (BI) were measured at admission. National health registers were used to link data on an individual level extracting data on medications, and hospital diseases. Patients were followed to the end of study (31.12.2015), death, or emigration, which ever occurred first. Kaplan-Meier survival curves were used to estimate crude survival proportions.
Univariable and multivariable analyses were performed using Cox regression. The multivariable analysis adjusted for age, marital status, period of hospital admission, BMI, and BI (model 1), and further adding either number of diseases (model 2) or Charlson comorbidity index (model 3).
Results: We included 74603 patients (62.8% women), with a median age of 83 (interquartile range [IQR] 77-88) years. Patients used a median of 6 (IQR 4-9) medications. Increasing number of medications was associated with increased overall, 30-days, and 1-year mortality in all 3 multivariable models for both men and women. For each extra medication the mortality increased by 3% in women and 4% in men in the fully adjusted model.
Conclusion: Increasing number of medications was associated with mortality in this nationwide cohort of geriatric inpatients. Our findings highlight the importance of polypharmacy in older patients with comorbidities
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