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ANDROID MALWARE DETECTION AND CLASSIFICATION USING MACHINE LEARNING TECHNIQUES
No full textAndroid is popular mobile operating system and there are multiple marketplaces for android applications. Most of these market places allow applications to be signed using self-signed certificates. Due to this practice there exists little or very limited control over the kind of applications that are being distributed. Also advancement of android root kits is making it increasingly easier to repackage existing android applications with malicious code. Conventional signature based techniques fail to detect these malwares. So detection and classification of android malwares is a very difficult problem to solve. We present a method to classify and detect such malwares by performing dynamic analysis of the system call sequences. Here we make use of machine learning techniques to build multiple models using distributions of syscalls as features. Using these models we predict whether given application is malicious or benign. Also we try to classify given application to specific known malware family. We also explore deeplearning methods such as stacked denoising autoencoder (SdA) algorithms and its effectiveness. We experimentally evaluate our methods using a real dataset of 600 malicious applications spread across 38 malware families along with 25 popular benign applications from various areas. We find that deeplearning algorithm (SdA) is most accurate in detecting a malware with lowest false positives while AdaBoost performs better in classifying a malware family
Involvement Beliefs and Behaviors of Parents Enrolled in a Community-Based Educational Program
No full textThe educational involvement practices of many Black parents are often overlooked by researchers and practitioners. In addition, the factors that lead to increased involvement among Black parents may be different than those of their non-Black peers. Thus, the goal of the two interrelated studies was to explore factors impacting educational involvement beliefs and behaviors among a population of primarily Black parents. Study 1, a quantitative study that extended the work on the Hoover-Dempsey and Sandler (2005) model of parent involvement, examined the extent to which contextual factors (parent time and energy and parent knowledge) moderate the relation between motivational (parental role construction and self-efficacy) and school-based (parental perception of school outreach) factors and involvement at school and home. The study was also designed to determine if the constructs of the model remained predictive among a racially homogeneous sample. Study 2 was a qualitative exploration of factors that influenced parent involvement behaviors among a sample of parents enrolled in a community-based educational program for the first time. In Study 1, data from 88 parents from a Maryland school district were analyzed to estimate hypothesized Hoover-Dempsey and Sandler model relations. In Study 2, data from 12 parents and program staff were analyzed using frameworks grounded in the work of Hoover-Dempsey and Sandler and Epstein (2009) to identify parent involvement themes present in their experiences. Consistent with expectations, knowledge moderated the relation between self-efficacy and home involvement and time and energy moderated the relation between school outreach and school involvement. Although the full Hoover-Dempsey and Sandler model predicted both home and school involvement, several novel relations were evidenced. Study 2 parents engaged in involvement activities often overlooked by educators such as communicating high expectations, making sacrifices to support their children, and teaching the value of education. These findings emphasize the importance of developing more inclusive, culturally-relevant conceptualizations of parent involvement than those currently employed by researchers and educators. The study also provides evidence that parental involvement efforts will be more successful if schools attend to three critical attributes: information provided to parents, educator knowledge, and educator attitudes
The Impact of Medicare's Per Diem Prospective Payment System on Psychiatric Inpatients: an empirical study on length of stay between Maryland and New Jersey psychiatric inpatients
No full textPrior to January 1, 2005, psychiatric hospitals and Medicare exempt inpatient psychiatric units were paid on a reasonable cost basis, with a limit on the rate of increase, under the Tax Equity and Fiscal Responsibility Act of 1982 (TEFRA). They were exempted from Medicare's DRG-specific per case PPS because of concerns that the psychiatric DRGs were very heterogeneous. As of January 1, 2005, an inpatient per diem prospective payment system (IPPS) was phased in over four years to allow adjustment time for hospitals. The IPPS was presumed to better capture these within-DRG variations among patients. It is possible, however, that length of stay (LOS) of Medicare's psychiatric inpatients would increase because of incentives to retain some patients longer if the applicable per diem rates exceeded their marginal per diem costs. This thesis examined the IPPS impacts on LOS of patients discharged from Medicare exempt inpatient units in New Jersey (the treatment group) with similar Medicare patients in Maryland and non-Medicare psychiatric patients in New Jersey (the control groups). We used a difference-in-differences regression for two models, the first with Medicare patient data only and the second with both Medicare and non-Medicare patients, using discharge data for calendar years 2004 and 2007. Analysis was restricted to patients in two DRG groups, depressive neuroses and major depression. Results, from both models, indicated that, ceteris paribus, the treatment group experienced a small increase in LOS relative to the control groups after IPPS implementation. With Model 2, however, the differential LOS increase for New Jersey Medicare patients was barely (and not significantly) larger than the differential increase for New Jersey non-Medicare patients. This result may be evidence of IPPS spillover effects onto LOS decisions for non-Medicare patients. Overall IPPS impacts (including the spillover effects) on the average LOS of New Jersey Medicare patients were statistically significant and positive but the magnitudes were relatively small. With the exception of hospital size, which tended to increase LOS, no patient or hospital characteristics showed systematically significant influences on LOS. Our findings mirrored previous studies. Hospitals appeared to respond to the IPPS incentive as expected though the estimated effect was modest
Untitled [King Kong]
No full textDerek_Coleman_February_21__2014_at_0129PMThese images were created as part of the Hughes Remix project, a collaborative endeavor developed by UMBC's Albin O. Kuhn Library Special Collections and the Department of Visual Art to foster creative engagement with archival holdings in conjunction with the 2014 Society for Photographic Education annual conference. UMBC's Special Collections offered a selection of images from the Hughes Company Glass Negatives (http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughes) collection for SPE members and conference attendees to remix, reinvent, reinterpret, and reimagine the images in this collection of Baltimore street scenes, promotional and advertising photographs, businesses, churches, schools, monuments, factories, machinery, and portraits. Images that were created were displayed during the conference as well as on a Tumblr site and are now archived in the Special Collections. Full details of the project can be found at: http://hughes-remix.tumblr.com/overview.The original Hughes Company Glass Negatives collection can be found at: http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughe
Untitled [Reverse silhouette of man in top hat overlaid on building]
No full textEvan_Leavitt__Milledgeville__GA_February_22__2014_at_0943PMThese images were created as part of the Hughes Remix project, a collaborative endeavor developed by UMBC's Albin O. Kuhn Library Special Collections and the Department of Visual Art to foster creative engagement with archival holdings in conjunction with the 2014 Society for Photographic Education annual conference. UMBC's Special Collections offered a selection of images from the Hughes Company Glass Negatives (http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughes) collection for SPE members and conference attendees to remix, reinvent, reinterpret, and reimagine the images in this collection of Baltimore street scenes, promotional and advertising photographs, businesses, churches, schools, monuments, factories, machinery, and portraits. Images that were created were displayed during the conference as well as on a Tumblr site and are now archived in the Special Collections. Full details of the project can be found at: http://hughes-remix.tumblr.com/overview.The original Hughes Company Glass Negatives collection can be found at: http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughe
Untitled [Ballet dancer and feather]
No full textEvan_Leavitt__Milledgeville__GA_February_22__2014_at_1028PMThese images were created as part of the Hughes Remix project, a collaborative endeavor developed by UMBC's Albin O. Kuhn Library Special Collections and the Department of Visual Art to foster creative engagement with archival holdings in conjunction with the 2014 Society for Photographic Education annual conference. UMBC's Special Collections offered a selection of images from the Hughes Company Glass Negatives (http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughes) collection for SPE members and conference attendees to remix, reinvent, reinterpret, and reimagine the images in this collection of Baltimore street scenes, promotional and advertising photographs, businesses, churches, schools, monuments, factories, machinery, and portraits. Images that were created were displayed during the conference as well as on a Tumblr site and are now archived in the Special Collections. Full details of the project can be found at: http://hughes-remix.tumblr.com/overview.The original Hughes Company Glass Negatives collection can be found at: http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughe
Untitled [Hand and group portrait; He deserted hope]
No full textEvan_Leavitt__Milledgeville__GA_February_22__2014_at_1043PMThese images were created as part of the Hughes Remix project, a collaborative endeavor developed by UMBC's Albin O. Kuhn Library Special Collections and the Department of Visual Art to foster creative engagement with archival holdings in conjunction with the 2014 Society for Photographic Education annual conference. UMBC's Special Collections offered a selection of images from the Hughes Company Glass Negatives (http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughes) collection for SPE members and conference attendees to remix, reinvent, reinterpret, and reimagine the images in this collection of Baltimore street scenes, promotional and advertising photographs, businesses, churches, schools, monuments, factories, machinery, and portraits. Images that were created were displayed during the conference as well as on a Tumblr site and are now archived in the Special Collections. Full details of the project can be found at: http://hughes-remix.tumblr.com/overview.The original Hughes Company Glass Negatives collection can be found at: http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughe
Untitled [Pocket watches and trees in forest]
No full textEvan_Leavitt__Milledgeville__GA_February_22__2014_at_1114PMThese images were created as part of the Hughes Remix project, a collaborative endeavor developed by UMBC's Albin O. Kuhn Library Special Collections and the Department of Visual Art to foster creative engagement with archival holdings in conjunction with the 2014 Society for Photographic Education annual conference. UMBC's Special Collections offered a selection of images from the Hughes Company Glass Negatives (http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughes) collection for SPE members and conference attendees to remix, reinvent, reinterpret, and reimagine the images in this collection of Baltimore street scenes, promotional and advertising photographs, businesses, churches, schools, monuments, factories, machinery, and portraits. Images that were created were displayed during the conference as well as on a Tumblr site and are now archived in the Special Collections. Full details of the project can be found at: http://hughes-remix.tumblr.com/overview.The original Hughes Company Glass Negatives collection can be found at: http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughe
Death Display
No full textHenry_Aragoncillo__Santa_Fe__N.M.___Death_Display_February_22__2014_at_0102PMThese images were created as part of the Hughes Remix project, a collaborative endeavor developed by UMBC's Albin O. Kuhn Library Special Collections and the Department of Visual Art to foster creative engagement with archival holdings in conjunction with the 2014 Society for Photographic Education annual conference. UMBC's Special Collections offered a selection of images from the Hughes Company Glass Negatives (http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughes) collection for SPE members and conference attendees to remix, reinvent, reinterpret, and reimagine the images in this collection of Baltimore street scenes, promotional and advertising photographs, businesses, churches, schools, monuments, factories, machinery, and portraits. Images that were created were displayed during the conference as well as on a Tumblr site and are now archived in the Special Collections. Full details of the project can be found at: http://hughes-remix.tumblr.com/overview.The original Hughes Company Glass Negatives collection can be found at: http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughe
Untitled [Little girl, building, trees]
No full textHyesoo_Choi__UMBC_Student_February_21__2014_at_0102PMThese images were created as part of the Hughes Remix project, a collaborative endeavor developed by UMBC's Albin O. Kuhn Library Special Collections and the Department of Visual Art to foster creative engagement with archival holdings in conjunction with the 2014 Society for Photographic Education annual conference. UMBC's Special Collections offered a selection of images from the Hughes Company Glass Negatives (http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughes) collection for SPE members and conference attendees to remix, reinvent, reinterpret, and reimagine the images in this collection of Baltimore street scenes, promotional and advertising photographs, businesses, churches, schools, monuments, factories, machinery, and portraits. Images that were created were displayed during the conference as well as on a Tumblr site and are now archived in the Special Collections. Full details of the project can be found at: http://hughes-remix.tumblr.com/overview.The original Hughes Company Glass Negatives collection can be found at: http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughe