Statistics and Probability Commons^™

Statistical Machine Learning Methods For Mining Spatial And Temporal Data, Fei Tan

Dissertations

Spatial and temporal dependencies are ubiquitous properties of data in numerous domains. The popularity of spatial and temporal data mining has thus grown with the increasing prevalence of massive data. The presence of spatial and temporal attributes not only provides complementary useful perspectives, but also poses new challenges to the representation and integration into the learning procedure. In this dissertation, the involved spatial and temporal dependencies are explored with three genres: sample-wise, feature-wise, and target-wise. A family of novel methodologies is developed accordingly for the dependency representation in respective scenarios.

First, dependencies among discrete, continuous and repeated observations are studied …

Risk Assesment Of Air Pollution Exposure (No2, So2, Total Suspended Particulate, And Particulate Matter 10 Micron) And Smoking Habits On The Lung Function Of Bus Drivers In Palembang City, Elvi Sunarsih, Suheryanto Suheryanto, Rini Mutahar, Rahmi Garmini

Kesmas

Nitrogen dioxide (NO2), carbon monoxide (CO), sulfur dioxide (SO2), Particulate Matter (PM10) and TSP are the most common and harmful air pollutants to humans. In short period, air pollution exposure at 5 ppm for 10 minutes to humans causes dyspnea, and when the level is increase to 800 ppm could cause 100% mortality in animals. This study was an analytical research, with cross sectional design and risk analysis. One hundred subjects were analyzed in this study. The results showed that non-cancer Hazard Index (HI) for realtime exposure with mean value was NO2: 1.85; SO2: 2.92; TSP: 7.09; and PM10: 11.7 …

Obesity As Type 2 Diabetes Common Comorbidity: Study Of Type 2 Diabetes Patients’ Eating Behaviour And Other Determinants In Jakarta, Indonesia, Isna Aulia Fajarini, Ratu Ayu Dewi Sartika

Kesmas

Obesity is one of the comorbidities widely occurred among type 2 diabetes patients. It is one of the most modifiable risk factors for the prevention of other comorbid conditions such as diabetic nephropathy and cardiovascular disease. The aim of this study was to recognize eating behaviour, physical activity, and other related factors, also their correlation with obesity as comorbidity among type 2 diabetes patients. Using cross-sectional design, data were collected from purposively selected 133 members of “PROLANIS” in Jatinegara Primary Health Care, East Jakarta. Food intake was assessed by 1x24 hours food recall and FFQ, physical activity by GPAQ. The …

Post Hypertension And Stroke: A Case Control Study, Aulia Imanda, Santi Martini, Kurnia Dwi Artanti

Kesmas

The purpose of this study was to determine the factors that influence the incidence of stroke including smoking status, past hypertension , past diabetes, diet, physical activity, alcohol consumption. The design of this study is case control with a ratio of 1: 1. The total number of respondents is 132 people. Research subjects were selected using systematic random sampling. This research was conducted at Ngudi Waluyo Hospital in Wlingi. Blitar, Indonesia in October till November 2017. Bivariate analysis showed that factors significantly related to stroke were smoking status (p=0.011, OR=2.6), history of past hypertension (p=0.00, OR= 6), past diabetes (p=0.015 …

Type 2 Diabetes Patients’ Need For Physical Activity Programming: A Qualitative Study At A Yogyakarta Hospital Clini, Novita Intan Arovah, Bernadeta Wara Kushartanti, Tracy L. Washington, Kristiann C. Heesch

Kesmas

Physical activity programs offered in Indonesian hospitals are often inadequate to help type 2 diabetes (T2D) patients meet international physical activity recommendations. This study aimed to identify T2D patients’ physical activity enablers and barriers, their preferences for, and experiences with, physical activity programming, with a view to developing future programs that are suited to these patients’ needs and preferences. Four focus groups were conducted with 28 patients (50% female) of the T2D clinic at the Local General Hospital of Yogyakarta. Discussions were thematically analysed in NVivo 10. The most reported types of physical activity were walking and participation in the …

Dengue Haemorrhagic Fever And House Conditions In Kupang City, East Nusa Tenggara Province, Wanti Wanti, Ririh Yudhastuti, Hari Basuki Notobroto, Sri Subekti, Oktofianus Sila, Ragu Harming Kristina, Feby Dwirahmadi

Kesmas

Kupang City has the highest Incidence of DHF in East Nusa Tenggara and also higher than the national figure. This study aims to analyze the relationship between housing conditions and the DHF incidence in the Kupang City. This observational study uses a case-control study in 25 villages with a total sample of 500 people. Data is analyzed using t test and chi square test. The house conditions were significantly related to the DHF incidence (p≤0.05), namely house lighting, water usage, wall construction, ventilation area and ownership of clean water facilities. People are advised to ventilate the house ≥10% of the …

Risk Factor Analysis Of Overnutrition Among Elementary School Children In Pekanbaru: An Urban-Rural Perspective, Arfianti Arfianti

Kesmas

The prevalence of childhood overnutrition is increasing in many parts of the world including Indonesia. National basic health research (RISKESDAS) 2010 showed that over-nutrition in urban children (10.4%) was greater than in rural areas (8.1%). The purpose of this study was to analyse risk factors for overnutrition on elementary students in urban and rural areas in Pekanbaru. This was an observasional analytical study with cross-sectional design. This study involved 137 urban and 113 rural students from six elementary schools in Pekanbaru recruited by quota sampling technique. This study was conducted between April-May 2018. The results showed that the proportions of …

Occurrence Of Natural Vertical Transmission Of “Zika Like Virus” In Aedes Aegypti Mosquito In Jambi City, Tri Baskoro Satoto, Nur Alvira Pasca Wati, Wida Purwaningsih, Hari Kusnanto Josef, Purwono Purwono, Rumbiwati Rumbiwati, Hermanto Hermanto, Roger Frutos

Kesmas

Zika virus can be transmitted through mosquitoes such as Aedes aegypti and Ae. albopictus. During the transition period of 2014–2015, an outbreak of dengue was reported in Jambi City, during which several sufferers were screened positive for Zika virus infection by the Eijkman Institute. It was interesting to note that all of those positive for Zika virus infection were indigenous residents and none of them had a history of international travel. This descriptive analytic study with a cross-sectional design study was conducted to present an overview of Aedes spp. population using ovitrap and egg colonization methods and to detect the …

Factors Related To Adolescent Behavior Towards Hiv/Aids Prevention, Yuliasti Eka Purnamaningrum, Ratyas Ekartika Puspita Candra Nugrahawati, Munica Rita Hernayanti, Anne Vajee

Kesmas

In 2016 Special Region of Yogyakarta was ranked 9th as the province with the highest number of people suffered from HIV/AIDS especially at Sleman regency. Globally, AIDS was the second leading cause of adolescents’s death aged of 10-19 years. The purpose of this study was to find out factors affecting the behaviour of the adolescents towards HIV/AIDS prevention. This research using with cross sectional study design. The sampling technique which used was stratified random sampling resulted in 59 respondents from 11th grade students at SMA Negeri 2 Sleman were selected as sample. Data were collected using questionnaire and analyzed using …

Adiposity Mediates The Association Between The Dietary Inflammatory Index And Markers Of Type 2 Diabetes Risk In Middle-Aged Black South African Women, Asanda Mtintsilana, Lisa K. Micklesfield, Elin Chorell, Tommy Olsson, Nitin Shivappa, James R. Hebert, Andre P. Kengne, Julia H. Goedecke

Faculty Publications

The dietary inflammatory index (DII^®), a validated tool used to measure the inflammatory potential of the diet, has been associated with metabolic disorders in various settings, but not in African populations. The aim of this study was to investigate whether the DII is associated with markers of type 2 diabetes (T2D) risk, and if this association is mediated by adiposity and/or low-grade inflammation, in black South Africa women. Energy-adjusted-DII (E-DII) scores were calculated in 190 women (median age, 53 years) from the Birth-to-Twenty plus cohort using a validated food frequency questionnaire. Fasting glucose, insulin, HbA1c, and inflammatory cytokines …

The Price Is Right: Analyzing Bidding Behavior On Contestants’ Row, Paul Kvam

Department of Math & Statistics Faculty Publications

The TV game show “The Price is Right” features a bidding auction called Contestant’s Row that rewards the player (out of four) who bids closest to an item’s value without overbidding. By exploring 903 game outcomes from the 2000–2001 season, we show how player strategies are significantly inefficient, and compare the empirical results to probability outcomes for optimal bid strategies found in a recent study. Findings show that the last bidder would do better using the naïve strategy of bidding a dollar more than the highest of the three bids. We apply the EM algorithm in a novel way to …

A Statistical Analysis Of The Roulette Martingale System: Examples, Formulas And Simulations With R, Peter Pflaumer

International Conference on Gambling & Risk Taking

Some gamblers use a martingale or doubling strategy as a way of improving their chances of winning. This paper derives important formulas for the martingale strategy, such as the distribution, the expected value, the standard deviation of the profit, the risk of a loss or the expected bet of one or multiple martingale rounds. A computer simulation study with R of the doubling strategy is presented. The results of doubling to gambling with a constant sized bet on simple chances (red or black numbers, even or odd numbers, and low (1 – 18) or high (19 – 36) numbers) and …

Responding To Some Challenges Posed By The Re-Identification Of Anonymized Personal Data, Herman T. Tavani, Frances S. Grodzinsky

Computer Ethics - Philosophical Enquiry (CEPE) Proceedings

In this paper, we examine a cluster of ethical controversies generated by the re-identification of anonymized personal data in the context of big data analytics, with particular attention to the implications for personal privacy. Our paper is organized into two main parts. Part One examines some ethical problems involving re-identification of personally identifiable information (PII) in large data sets. Part Two begins with a brief description of Moor and Weckert’s Dynamic Ethics (DE) and Nissenbaum’s Contextual Integrity (CI) Frameworks. We then investigate whether these frameworks, used together, can provide us with a more robust scheme for analyzing privacy concerns that …

Kelly Fraction Estimation For Multiple Correlated Bets, William Chin

International Conference on Gambling & Risk Taking

It is well-known that expected portfolio growth is maximized by maximizing

expected logarithmic utility. This investment criterion is known as Kelly betting.

It has many optimality properties but is considered to be risky. Blackjack

teams and other advantage gamblers practice a fraction of the Kelly optimal to

decrease risk. Some hedge fund managers are thought to practice according to

Kelly principles. We use a continuous multivariate Geometric Brownian motion

model and present an interval estimate for the historical fraction for a portfolio

of correlated bets, possibly including a risk-free asset. Historical data comes

from a range of sources and the …

Dietary Inflammatory Index And Odds Of Colorectal Cancer And Colorectal Adenomatous Polyps In A Case-Control Study From Iran, Pegah Rafiee, Nitin Shivappa, James R. Hébert, Saeede Jaafari Nasab, Alireza Bahrami, Azita Hekmatdoost, Bahram Rashidkhani, Amir Sadeghi, Mohammad Houshyari, Ehsan Hejazi

Faculty Publications

Background: Chronic inflammation is implicated in the development of colorectal cancer (CRC) and its precursor; colorectal adenomatous polyps (CAP). Some dietary factors are important triggers for systemic inflammation. Therefore, the present study aimed to investigate the association between the dietary inflammatory index (DII^®) and the risk of CRC and CAP in an Iranian case-control study. Methods: 134 newly diagnosed CRC patients, 130 newly diagnosed CAP patients, and 240 hospitalized controls were recruited using convenience sampling. Energy-adjusted DII (E-DII) scores were computed based on dietary intake assessed using a reproducible and valid 148-item food frequency questionnaire. Logistic regression models …

Probabilistic And Statistical Prediction Models For Alzheimer’S Disease And Statistical Analysis Of Global Warming, Maryam Ibrahim Habadi

USF Tampa Graduate Theses and Dissertations

The importance and applicability of data-driven statistical models have increased significantly. This current study, we have utilized statistical techniques in interdisciplinary research, including environmental and health.

Environmentally, global warming is considered one of the critical issues facing our planet. It is the increase in average global temperatures caused mostly by increases in Carbon Dioxide CO₂. The excessive rise of carbon dioxide from the average level as the side effect of the industrial revolution has a significant impact on blocking the heat and increase the temperature within the Earth’s atmosphere. Based on the record of total CO₂ emissions …

Detection Of Sand Boils From Images Using Machine Learning Approaches, Aditi S. Kuchi

LSU New Orleans Theses and Dissertations

Levees provide protection for vast amounts of commercial and residential properties. However, these structures degrade over time, due to the impact of severe weather, sand boils, subsidence of land, seepage, etc. In this research, we focus on detecting sand boils. Sand boils occur when water under pressure wells up to the surface through a bed of sand. These make levees especially vulnerable. Object detection is a good approach to confirm the presence of sand boils from satellite or drone imagery, which can be utilized to assist in the automated levee monitoring methodology. Since sand boils have distinct features, applying object …

Forward Selection Via Distance Correlation, Ty Adams

Mathematical Sciences Technical Reports (MSTR)

No abstract provided.

Advances In Measurement Error Modeling, Linh Nghiem

Statistical Science Theses and Dissertations

Measurement error in observations is widely known to cause bias and a loss of power when fitting statistical models, particularly when studying distribution shape or the relationship between an outcome and a variable of interest. Most existing correction methods in the literature require strong assumptions about the distribution of the measurement error, or rely on ancillary data which is not always available. This limits the applicability of these methods in many situations. Furthermore, new correction approaches are also needed for high-dimensional settings, where the presence of measurement error in the covariates adds another level of complexity to the desirable structure …

Reaching Out To Behavioral Science Audiences Via Meta-Analysis, Bruce E. Blaine

Statistics Faculty/Staff Publications

Exposing students to meta-analysis supports ASA Curriculum Guidelines regarding the importance of data science, working with real and unusual data, diverse approaches to statistical models, and building relationships with allied disciplines. This poster present some of the benefits to students from taking an undergraduate meta-analysis course. The course is a 300-level statistics elective (class size: 12-18) that enrolls statistics majors and students from social and allied health science majors who are working on a data science minor. The course assumes one prior statistics course, and is taught using R. Benefits to students include: learning how to read primary research papers …