LLukas22/scidocs huggingface dataset:
Security and privacy for big data: A systematic literature review

Big data is currently a hot research topic, with four million hits on Google scholar in October 2016. One reason for the popularity of big data research is the knowledge that can be extracted from analyzing these large data sets. However, data can contain sensitive information, and data must therefore be sufficiently protected as it is stored and processed. Furthermore, it might also be required to provide meaningful, proven, privacy guarantees if the data can be linked to individuals. To the best of our knowledge, there exists no systematic overview of the overlap between big data and the area of security and privacy. Consequently, this review aims to explore security and privacy research within big data, by outlining and providing structure to what research currently exists. Moreover, we investigate which papers connect security and privacy with big data, and which categories these papers cover. Ultimately, is security and privacy research for big data different from the rest of the research within the security and privacy domain? To answer these questions, we perform a systematic literature review (SLR), where we collect recent papers from top conferences, and categorize them in order to provide an overview of the security and privacy topics present within the context of big data. Within each category we also present a qualitative analysis of papers representative for that specific area. Furthermore, we explore and visualize the relationship between the categories. Thus, the objective of this review is to provide a snapshot of the current state of security and privacy research for big data, and to discover where further research is required.
A 6-month clinical trial to study the effects of a cetylpyridinium chloride mouthrinse on gingivitis and plaque.

PURPOSE
To evaluate the effects of a novel mouthrinse containing 0.07% high bioavailable cetylpyridinium chloride (Crest Pro-Health Rinse) on the development of gingivitis and plaque versus a placebo control over a period of 6 months.


METHODS
This was a randomized, 6-month, placebo-controlled, parallel groups, double blind, single center clinical trial. One hundred thirty-nine generally healthy adults with mild-to-moderate gingivitis were enrolled in the study. Subjects were given Modified Gingival Index (MGI), Gingival Bleeding Index (GBI) and Modified Quigley-Hein Plaque Index (MQH) examinations followed by a dental prophylaxis. Subjects were then randomly assigned to either the cetylpyridinium chloride (CPC) rinse or placebo rinse and instructed to begin rinsing twice a day with 20 ml of their assigned mouthrinse for 30 seconds after brushing their teeth. Subjects were assessed for MGI, GBI and MQH scores after 3 and 6 months of product use. Oral hard and soft tissue examinations were also performed at all visits.


RESULTS
124 subjects were evaluable at Month 3 and 119 at Month 6. After 6 months, subjects rinsing with the CPC rinse showed 15.4% less gingival inflammation, 33.3% less gingival bleeding, and 15.8% less plaque relative to the placebo group. All reductions were highly statistically significantly different (P< 0.01). Results were similar at 3 months. Both treatments were well-tolerated.


CLINICAL SIGNIFICANCE
This study demonstrates that the Crest Pro-Health 0.07% CPC mouthrinse provided significant antiplaque and antigingivitis benefits when used twice daily for 6 months as an adjunct to toothbrushing.
Meta-learners for Estimating Heterogeneous Treatment Effects using Machine Learning ∗

There is growing interest in estimating and analyzing heterogeneous treatment effects in experimental and observational studies. We describe a number of meta-algorithms that can take advantage of any machine learning or regression method to estimate the conditional average treatment effect (CATE) function. Meta-algorithms build on base algorithms—such as OLS, the Nadaraya-Watson estimator, Random Forests (RF), Bayesian Average Regression Trees (BART) or neural networks—to estimate the CATE, a function that the base algorithms are not designed to estimate directly. We introduce a new meta-algorithm, the X–learner, that is provably efficient when the number of units in one treatment group is much larger than another, and it can exploit structural properties of the CATE function. For example, if the CATE function is parametrically linear and the response functions in treatment and control are Lipschitz continuous, the X–learner can still achieve the parametric rate under regularity conditions. We then introduce versions of the X–learner that use RF and BART as base learners. In our extensive simulation studies, the X–learner performs favorably, although none of the meta-learners is uniformly the best. We also analyze two real data applications, and provide a software package that implements our methods. Keywords— Causal Inference | Random Forests | Minimax Optimality
Groupthink and Peer Pressure: Social Influence in Online Social Network Groups

In this paper, we present a horizontal view of social influence, more specifically a quantitative study of the influence of neighbours on the probability of a particular node to join a group, on four popular Online Social Networks (OSNs), namely Orkut, YouTube, LiveJournal, and Flickr. Neighbours in OSNs have a mutually acknowledged relation, most often defined as friendship, and they are directly connected on a graph of a social network. Users in OSNs can also join groups of users. These groups represent common areas of interest.We present a simple social influence model to describe and explain the group joining process of users on OSNs. To this end, we extract the social influence from data sets of OSNs of a million sample nodes. One of our findings is that a set of neighbours in the OSN is about $100$ times more powerful in influencing a user to join a group than the same number of strangers.
Nursing students ' self-efficacy , self-regulated learning and academic performance in science

The study examined the relationships among selfefficacy, learning strategies and academic performance. Specifically, it reports a study of students' academic and science self-efficacy, self-regulatory learning strategies and academic performance in first year science courses of undergraduate nursing programs. Students from several universities were surveyed by questionnaire and a sample of these students was interviewed by telephone.
A Planar WWAN/LTE Antenna for Portable Devices

A Wireless Wide Area Network (WWAN) and Long Term Evolution (LTE) eight-band antenna for portable wireless devices is proposed, which consists of a direct-fed monopole with a chip inductor, a grounded strip, and a coupled-fed monopole with a distributed inductor. The fundamental modes of these three components form a low operating band from 0.66 to 1.03 GHz. The higher modes of the grounded strip and coupled-fed monopole create a high operating band from 1.7 to 2.87 GHz. Based on the 6-dB return loss, the two wide operating bands can be employed in LTE 700/GSM 850/900/1800/1900/UMTS/LTE 2300/2500 applications. The proposed antenna having dimensions 75<formula formulatype="inline"><tex Notation="TeX">$\,\times\,$</tex></formula>10<formula formulatype="inline"><tex Notation="TeX">$\,\times\,$</tex></formula>0.8 mm<formula formulatype="inline"><tex Notation="TeX">$^3$</tex></formula> is appropriate for the top edge of a tablet computer. A 200<formula formulatype="inline"> <tex Notation="TeX">$\,\times\,$</tex></formula>260 mm<formula formulatype="inline"> <tex Notation="TeX">$^2$</tex></formula> copper plate, which is about the size of a 13-in screen plate, is used as the system ground plane.
Annexin A1 down-regulation in oral squamous cell carcinoma correlates to pathological differentiation grade.

OBJECTIVES
Functional role of Annexin A1 in tumorigenesis is poorly understood. The aim of this study was to investigate the relationship between Annexin A1 protein expression and pathological differentiation grade in biopsy samples from a large cohort of patients with oral squamous cell carcinoma (OSCC); and to evaluate the potential role of Annexin A1 on cell proliferation and tumorigenesis of OSCC.


MATERIALS AND METHODS
We investigated the relationship between Annexin A1 expression by immunohistochemical staining and pathological differentiation grade of biopsy samples from 232 OSCC patients, and the relationship between Annexin A1 expression and cell proliferation as well as tumor formation using both in vitro and in vivo OSCC models.


RESULTS
Annexin A1 expression correlated significantly with pathological differentiation grade in OSCC patients, a lower Annexin A1 expression correlating with a poorer differentiation grade. Forced Annexin A1 overexpression in OSCC cell lines, CAL27 and Tca8113, significantly reduced the cell proliferation whereas down-regulation of Annexin A1 expression in OSCC cell line, HB96, significantly increased proliferation of HB96 cells. Tumors formed from CAL27 cells overexpressing Annexin A1 grown significantly slower compared to the parental CAL27 cells in nude mice and showed a significantly reduced nuclear Ki-67 labeling index. Interestingly, these tumors also showed a well differentiated histology pattern whereas the tumors formed from the parental cells were consistently moderately differentiated.


CONCLUSIONS
These data support a significant correlation between Annexin A1 expression and pathological differentiation grade, and a functional role of Annexin A1 in inhibiting cell proliferation and cell differentiation in OSCC.
A Multiple-Kernel Fuzzy C-Means Algorithm for Image Segmentation

In this paper, a generalized multiple-kernel fuzzy C-means (FCM) (MKFCM) methodology is introduced as a framework for image-segmentation problems. In the framework, aside from the fact that the composite kernels are used in the kernel FCM (KFCM), a linear combination of multiple kernels is proposed and the updating rules for the linear coefficients of the composite kernel are derived as well. The proposed MKFCM algorithm provides us a new flexible vehicle to fuse different pixel information in image-segmentation problems. That is, different pixel information represented by different kernels is combined in the kernel space to produce a new kernel. It is shown that two successful enhanced KFCM-based image-segmentation algorithms are special cases of MKFCM. Several new segmentation algorithms are also derived from the proposed MKFCM framework. Simulations on the segmentation of synthetic and medical images demonstrate the flexibility and advantages of MKFCM-based approaches.
Bureau of Ocean Management, Regulation, and Enforcement Arctic Oil Spill Response Research and Development Program “Two Decades of Achievement”

ABSTRACT Oil and gas exploration, development, production, and transportation in the Arctic have increased dramatically in recent years. Oil spill response in cold environments must take into account the atmospheric, biological, oceanographic and physical features when developing appropriate plans and strategies. Factors such as extreme low temperatures, remoteness of the area, the presence of ice and seasonal darkness confront planners and first responders. From 1993 through 2009, the Bureau of Ocean Management, Regulation, and Enforcement (BOEMRE) (formerly the Minerals Management Service) initiated and successfully conducted thirty-one projects directly related to improving the equipment, technologies and methodologies for the prompt identification and removal of oil in Arctic environments and to provide regulators with the scientific data necessary to support regulatory decisions pertaining to permitting and approving plans, safety and pollution inspections, enforcement actions, training requirements,...
Turboelectric Distributed Propulsion in a Hybrid Wing Body Aircraft

The performance of the N3-X, a 300 passenger hybrid wing body (HWB) aircraft with turboelectric distributed propulsion (TeDP), has been analyzed to see if it can meet the 70% fuel burn reduction goal of the NASA Subsonic Fixed Wing project for N+3 generation aircraft. The TeDP system utilizes superconducting electric generators, motors and transmission lines to allow the power producing and thrust producing portions of the system to be widely separated. It also allows a small number of large turboshaft engines to drive any number of propulsors. On the N3-X these new degrees of freedom were used to (1) place two large turboshaft engines driving generators in freestream conditions to maximize thermal efficiency and (2) to embed a broad continuous array of 15 motor driven propulsors on the upper surface of the aircraft near the trailing edge. That location maximizes the amount of the boundary layer ingested and thus maximizes propulsive efficiency. The Boeing B777-200LR flying 7500 nm (13890 km) with a cruise speed of Mach 0.84 and an 118100 lb payload was selected as the reference aircraft and mission for this study. In order to distinguish between improvements due to technology and aircraft configuration changes from those due to the propulsion configuration changes, an intermediate configuration was included in this study. In this configuration a pylon mounted, ultra high bypass (UHB) geared turbofan engine with identical propulsion technology was integrated into the same hybrid wing body airframe. That aircraft achieved a 52% reduction in mission fuel burn relative to the reference aircraft. The N3-X was able to achieve a reduction of 70% and 72% (depending on the cooling system) relative to the reference aircraft. The additional 18% 20% reduction in the mission fuel burn can therefore be attributed to the additional degrees of freedom in the propulsion system configuration afforded by the TeDP system that eliminates nacelle and pylon drag, maximizes boundary layer ingestion (BLI) to reduce inlet drag on the propulsion system, and reduces the wake drag of the vehicle.
No clear association between female hormonal aspects and osteoarthritis of the hand, hip and knee: a systematic review.

OBJECTIVE
Incidence of OA rises steeply in women of age >50 years; the climacteric period for women. The simultaneous occurrence of these events suggests an association between OA and changes in female hormonal aspects. This systematic review studies the assumed association between OA and aspects concerning the fertile period (duration, endogenous hormones, age at menarche/menopause) and the menopause [menopausal status, years since menopause (YSM) and surgical menopause].


METHODS
Medline and EMBASE were searched for articles assessing associations between hand/hip/knee OA and female hormonal aspects. Methodological quality was assessed systematically, and results were summarized in a best-evidence synthesis.


RESULTS
Sixteen studies were included in the present study. For most hormonal aspects no association was found. Conflicting evidence was found for an association of age at menarche with Herberden's nodes (HNs) and hand ROA, YSM with knee ROA and ovariectomy with hip OA. An increased risk was seen for low estradiol serum levels in the early follicular phase with incident knee ROA, age at menarche being < or =11 years old with total hip replacement, being post-menopausal and YSM with the presence of HN. A protective effect was seen for age at menopause being > or =52 years with total knee replacement. Evidence level was limited for all.


CONCLUSIONS
The assumed relationship between the female hormonal aspects and OA was not clearly observed in this review. The relationship is perhaps too complex, or other aspects, yet to be determined, play a role in the increased incidence in women aged >50 years.
An EXCEL template for calculation of enzyme kinetic parameters by non-linear regression

MOTIVATION
An EXCEL template has been developed for the calculation of enzyme kinetic parameters by non-linear regression techniques. The tool is accurate, inexpensive, as well as easy to use and modify.


AVAILABILITY
The program is available from http://www.ebi.ac.uk/biocat/biocat.html


CONTACT
agustin. hernandez@bio.kuleuven.ac.be
Properties and applications of starch-converting enzymes of the α-amylase family

Starch is a major storage product of many economically important crops such as wheat, rice, maize, tapioca, and potato. A large-scale starch processing industry has emerged in the last century. In the past decades, we have seen a shift from the acid hydrolysis of starch to the use of starch-converting enzymes in the production of maltodextrin, modified starches, or glucose and fructose syrups. Currently, these enzymes comprise about 30% of the world’s enzyme production. Besides the use in starch hydrolysis, starch-converting enzymes are also used in a number of other industrial applications, such as laundry and porcelain detergents or as anti-staling agents in baking. A number of these starch-converting enzymes belong to a single family: the -amylase family or family13 glycosyl hydrolases. This group of enzymes share a number of common characteristics such as a ( / )8 barrel structure, the hydrolysis or formation of glycosidic bonds in the conformation, and a number of conserved amino acid residues in the active site. As many as 21 different reaction and product specificities are found in this family. Currently, 25 three-dimensional (3D) structures of a few members of the -amylase family have been determined using protein crystallization and X-ray crystallography. These data in combination with site-directed mutagenesis studies have helped to better understand the interactions between the substrate or product molecule and the different amino acids found in and around the active site. This review illustrates the reaction and product diversity found within the -amylase family, the mechanistic principles deduced from structure–function relationship structures, and the use of the enzymes of this family in industrial applications. © 2002 Elsevier Science B.V. All rights reserved.
People With Dark Personalities Tend to Create a Physically Attractive Veneer

Which personality traits are associated with physical attractiveness? Recent findings suggest that people high in some dark personality traits, such as narcissism and psychopathy, can be physically attractive. But what makes them attractive? Studies have confounded the more enduring qualities that impact attractiveness (i.e., unadorned attractiveness) and the effects of easily manipulated qualities such as clothing (i.e., effective adornment). In this multimethod study, we disentangle these components of attractiveness, collect self-reports and peer reports of eight major personality traits, and reveal the personality profile of people who adorn themselves effectively. Consistent with findings that dark personalities actively create positive first impressions, we found that the composite of the Dark Triad—Machiavellianism, narcissism, and psychopathy—correlates with effective adornment. This effect was also evident for psychopathy measured alone. This study provides the first experimental evidence that dark personalities construct appearances that act as social lures—possibly facilitating their cunning social strategies.
Vasopressin, from Regulator to Disease Predictor for Diabetes and Cardiometabolic Risk.

BACKGROUND
Type 2 diabetes and its cardiovascular disease complications are the major public health threats of our century. Although physical activity and dietary changes are the cornerstones in prevention of diabetes, their broad implementation is not elementary and other complementary lifestyle regimens are needed.


SUMMARY
Vasopressin (VP) is the main regulator of body water homeostasis, and at insufficient water intake, normal plasma osmolality can be maintained by increased pituitary VP secretion through VP-2 receptor mediated renal water reabsorption. During the last 6 years several independent studies have shown that high circulating VP, measured by the stable VP marker copeptin, predicts development of type 2 diabetes as well as the metabolic syndrome, cardiovascular disease and premature mortality. Interestingly, VP stimulates adrenocorticotrophic hormone, and as a consequence cortisol secretion, through pituitary VP-1B receptors, which could explain why the 25% of the middle-aged population with high circulating VP have a mild Cushing's syndrome-like phenotype. In rats, high VP results in deterioration of glucose tolerance whereas low VP, obtained by high water intake, ameliorates the VP associated dysmetabolic state, suggesting that the relationship between high VP and risk of diabetes and cardiometabolic disease in humans may be causal and reversible by increasing water intake.


KEY MESSAGES
With the emerging evidence that high VP, which is present in 25% of the population, is an independent risk factor for diabetes and cardiometabolic disease, VP reduction through water supplementation appears as an attractive candidate intervention to prevent diabetes and its cardiovascular complications.
Road traffic congestion monitoring and measurement using active RFID and GSM technology

In this paper, we present an intelligent Traffic Congestion Monitoring & Measurement System called TrafficMonitor to monitor and measure the road traffic congestions using probe vehicle. The concept of probe vehicle has come up in recent times for collecting real time traffic data. Our system provides an easy platform to analyze the traffic movement and congestion pattern. TrafficMonitor is a rapidly deployable, cost-effective and easily maintainable traffic congestion monitoring & measurement system that combines active RFID (based on IEEE 802.15.4 protocol, 2.4 GHz ISM band) and GSM technologies. The congestion detection algorithm is based upon calculation of vehicular speed over a stretch of road and the average waiting time of vehicles at road-crossing. Besides providing a complete description of our system and the concepts developed, the paper also provides a comprehensive description of on-road test results to support our concepts. We also provide a detailed description of all the field trials conducted, various traffic data gathered and finally the conclusions derived from such data. Government agencies, especially traffic control department, may use this system for realtime congestion monitoring by installing the system with probe vehicles. Road research organizations and NGOs may use this for studying and analyzing traffic mobility and congestion patterns.
Teenage pregnancy.

OBJECTIVES
This article examines trends in teenage pregnancy in Canada, focussing on induced abortions, live births and fetal loss among women aged 15 to 19 in 1997.


DATA SOURCES
The data come from the Hospital Morbidity Data Base and the Canadian Vital Statistics Data Base at Statistics Canada, and the annual Therapeutic Abortion Survey, conducted by the Canadian Institute for Health Information. Data on abortions performed on Canadian residents in the United States are from an annual survey of selected states. International data are from the Alan Guttmacher Institute.


ANALYTICAL TECHNIQUES
Pregnancy rates, abortion rates, live birth rates and fetal loss rates are calculated using population counts of women in the age groups 15 to 17, 18 to 19, and 15 to 19. The percentages of pregnancies that ended in the three outcomes are also calculated for these years.


MAIN RESULTS
The teenage pregnancy rate declined from 1994 to 1997, reflecting lower teenage birth and fetal loss rates. Through this period the abortion rate remained stable, with the result that slightly more than half of all teenage pregnancies ended in abortion by 1997. Younger teens are more likely to have an abortion than to give birth. The majority of pregnancies among older teens end in a live birth, although the number of live births is decreasing.