nils-herrmann/clean_scirepeval huggingface dataset:
Predicting pressure ulcer risk: a multisite study of the predictive validity of the Braden Scale.

There have been no studies that have tested the Braden Scale for predictive validity and established cutoff points for assessing risk specific to different settings.



To evaluate the predictive validity of the Braden Scale in a variety of settings (tertiary care hospitals, Veterans Administration Medical Centers [VAMCs], and skilled nursing facilities [SNFs]). To determine the critical cutoff point for classifying risk in these settings and whether this cutoff point differs between settings. To determine the optimal timing for assessing risk across settings.



Randomly selected subjects (N= 843) older than 19 years of age from a variety of care settings who did not have pressure ulcers on admission were included. Subjects were 63% men, 79% Caucasian, and had a mean age of 63 (+/-16) years. Subjects were assessed for pressure ulcers using the Braden Scale every 48 to 72 hours for 1 to 4 weeks. The Braden Scale score and skin assessment were independently rated, and the data collectors were blind to the findings of the other measures.



One hundred eight of 843 (12.8%) subjects developed pressure ulcers. The incidence was 8.5%, 7.4%, and 23.9% in tertiary care hospitals, VAMCs, and SNFs, respectively. Subjects who developed pressure ulcers were older and more likely to be female than those who did not develop ulcers. Braden Scale scores were significantly (p = .0001) lower in those who developed ulcers than in those who did not develop ulcers. Overall, the critical cutoff score for predicting risk was 18. Risk assessment on admission is highly predictive of pressure ulcer development in all settings but not as predictive as the assessment completed 48 to 72 hours after admission.



Risk assessment on admission is important for timely planning of preventive strategies. Ongoing assessment in SNFs and VAMCs improves prediction and permits fine-tuning of the risk-based prevention protocols. In tertiary care the most accurate prediction occurs at 48 to 72 hours after admission and at this time the care plan can be refined.
Understanding digital and material social communications for older adults

Online technologies are promising for helping older adults maintain social connectedness, particularly with younger people, yet many older adults resist or participate minimally in the mainstream technologies used by younger members of their social network. We present results from an interview study involving 22 older adults (age 71-92) to understand communication preferences and values related to social media. Seniors articulate many concerns with online social media, including the time required for legitimate participation, the loss of deeper communication, content irrelevance, and privacy. Additionally, older adults engage in social practices that could be supported by online social technologies, but they rarely use such tools. The theme of material social communications emerges from our data, and we examine this in context of online social media. We conclude with design considerations for the development of social media for older adults, and as part of this we describe the notion of bridging technologies as a framework for intergenerational communication design.
Gamification for enforcing coding conventions

Software is a knowledge intensive product, which can only evolve if there is effective and efficient information exchange between developers. Complying to coding conventions improves information exchange by improving the readability of source code. However, without some form of enforcement, compliance to coding conventions is limited. We look at the problem of information exchange in code and propose gamification as a way to motivate developers to invest in compliance. Our concept consists of a technical prototype and its integration into a Scrum environment. By means of two experiments with agile software teams and subsequent surveys, we show that gamification can effectively improve adherence to coding conventions.
Phased Array for UAV Communications at 5.5 GHz

This letter presents the design and manufacturing of a phased array at 5.5-GHz band. The antenna application is the communications with unmanned aerial vehicles (UAVs) in a wildfire. The antenna is controlled through a WiMAX station. The vertical radiation pattern is a shaped beam. This shaped beam has the maximum at broadside and a smooth gain decay in positive θ. This way, the differences in the free-space losses of the UAVs are compensated. The antenna is steered in the horizontal plane through phase shifters. It also includes amplifiers and digital attenuators to calibrate the antenna performance. A calibration method is also proposed in the letter.
Query simplification: graceful degradation for join-order optimization

Join ordering is one of the most important, but also most challenging problems of query optimization. In general finding the optimal join order is NP-hard. Existing dynamic programming algorithms exhibit exponential runtime even for the restricted, but highly relevant class of star joins. Therefore, it is infeasible to find the optimal join order when the query includes a large number of joins. Existing approaches for large queries switch to greedy heuristics or randomized algorithms at some point, which can degrade query execution performance by orders of magnitude.
 We propose a new paradigm for optimizing large queries: when a query is too complex to be optimized exactly, we simplify the query's join graph until the optimization problem becomes tractable within a given time budget. During simplification, we apply safe simplifications before more risky ones. This way join ordering problems are solved optimally if possible, and gracefully degrade with increasing query complexity.
 This paper presents a general framework for query simplification and a strategy for directing the simplification process. Extensive experiments with different kinds of queries, different join-graph structures, and different cost functions indicate that query simplification is very robust and outperforms previous methods for join-order optimization.
Pattern and consequences of krathom (Mitragyna speciosa Korth.) use among male villagers in southern Thailand: a qualitative study.

Krathom is currently the most popular illicit substance in use in southern Thailand. Research regarding its effects and health impacts is scarce. This study explored the pattern of krathom use and users' perceptions of the consequences of its use.



An in-depth qualitative interview. A group of 34 self-identified regular users, occasional users, non-users and ex-users of krathom was used in this study. Health volunteer as a key-contact person helped the researcher to invite villagers to participate in the study using snowballing technique. The process of data analysis was guided by Strauss and Corbin's grounded theory.



The core category, 'Understanding krathom use', was generated from three inter-related categories: (i) reasons for continuing krathom use, (ii) the way of applying krathom, and (iii) perceiving positive and realizing the negative effects of krathom use and their 18 subcategories.



The study findings reveal the importance of considering krathom use from the perspective and belief of the villagers. Krathom is addictive with its own characteristic symptoms and signs. The results provide support for policy interventions to control the availability of krathom according to the community context. In addition, krathom misuse by adolescents must be considered.
Intrusion Detection Systems : A Survey and Taxonomy

This paper presents a taxonomy of intrusion detection systems that is then used to survey and classify a number of research prototypes. The taxonomy consists of a classification first of the detection principle, and second of certain operational aspects of the intrusion detection system as such. The systems are also grouped according to the increasing difficulty of the problem they attempt to address. These classifications are used predictively, pointing towards a number of areas of future research in the field of intrusion detection.
Bovine aortic arch: predictor of entry site and risk factor for neurologic injury in acute type a dissection.

The aim of this study was to evaluate if the presence of a bovine aortic arch (BAA)- the most common aortic arch anomaly-influences the location of the primary entry tear, the surgical procedure, and the outcome of patients undergoing operation for type A acute aortic dissection (AAD).



A total of 157 patients underwent emergency operations because of AAD (71% men, mean age 59.5 ± 13 years). Preoperative computed tomographic scans were screened for the presence of BAA. Patients were separated into 2 groups: presenting with BAA (BAA+, n = 22) or not (BAA-, n = 135). Location of the primary tear, surgical treatment, outcome, and risk factors for postoperative neurologic injury and in-hospital mortality were analyzed.



Fourteen percent (22 of 157) of all patients operated on for AAD had a concomitant BAA. Location of the primary entry tear was predominantly in the aortic arch in patients with BAA (BAA+, 59.1% versus BAA-, 13.3%; p < 0.001). Multivariate analysis revealed the presence of a BAA to be an independent risk factor for having the primary tear in the aortic arch (odds ratio [OR], 14.79; 95% confidence interval [CI] 4.54-48.13; p < 0.001) but not for in-hospital mortality. Patients with BAA had a higher rate of postoperative neurologic injury (BAA+, 35% versus BAA-, 7.9%; p = 0.004). Multivariate analysis identified the presence of BAA as an independent risk factor for postoperative neurologic injury (OR, 4.9; 95% CI, 1.635-14.734; p = 0.005).



In type A AAD, the presence of a BAA predicts the location of the primary entry site in the aortic arch and is an independent risk factor for a poor neurologic outcome.
Clinicopathologic Manifestations of Patients with Fordyce's Spots

Vol. 24, No. 1, 2012 103 Received January 5, 2011, Revised March 9, 2011, Accepted for publication April 6, 2011  Gyong Moon Kim, M.D., Department of Dermatology, St. Vincent Hospital, College of Medicine, The Catholic University of Korea, 93-6 Ji-dong, Paldal-gu, Suwon 442-723,   gyongmoonkim@ catholic.ac.kr  2012 http://dx.doi.org/10.5021/ad.2012.24.1.103
A survey of Euler diagrams

Euler diagrams visually represent containment, intersection and exclusion using closed curves. They first appeared several hundred years ago, however, there has been a resurgence in Euler diagram research in the twenty-first century. This was initially driven by their use in visual languages, where they can be used to represent logical expressions diagrammatically. This work lead to the requirement to automatically generate Euler diagrams from an abstract description. The ability to generate diagrams has accelerated their use in information visualization, both in the standard case where multiple grouping of data items inside curves is required and in the area-proportional case where the area of curve intersections is important. As a result, examining the usability of Euler diagrams has become an important aspect of this research. Usability has been investigated by empirical studies, but much research has concentrated on wellformedness, which concerns how curves and other features of the diagram interrelate. This work has revealed the drawability of Euler diagrams under various wellformedness properties and has developed embedding methods that meet these properties. Euler diagram research surveyed in this paper includes theoretical results, generation techniques, transformation methods and the development of automated reasoning systems for Euler diagrams. It also overviews application areas and the ways in which Euler diagrams have been extended.
Design data for quick development of Folded E plane Tee

Most of the microwave communication systems have requirement of power dividers that are essential for power splitting and combining operations. This paper presents a structure and methodology for designing a rectangular waveguide Folded E plane Tee. The structure proposed has the advantage of less area consumption as compared to a conventional waveguide Tee. The paper also presents design equations using which one can design a Folded E plane Tee at any desired frequency. The designs thus obtained at some random frequencies from the equations have been simulated in COMSOL Multiphysics and the scattering parameters obtained have been presented.
Presentation on Facebook and risk of cyberbullying victimisation

Facebook is an environment in which adolescents can experiment with self-presentation. Unfortunately, Facebook can also be an environment in which cyberbullying occurs. The aim of the current study was to investigate whether specific self-presentation behaviours in Facebook were associated with cyberbullying victimisation for adolescents. The contents of 147 adolescent (15–24 years) Facebook profile pages were recorded and used to predict cyberbullying victimisation. Coded contents included the presence or absence of Facebook profile features (e.g., relationship status) and the specific content of certain features (e.g., type and valence of wall posts). Participants completed measures of cyberbullying victimisation and traditional bullying victimisation and perpetration. More than three out of four participants reported experiencing at least one victimisation experience on Facebook in the preceding 6 months. A series of Facebook features and experiences of traditional bullying victimisation/perpetration were found to be associated with an increased risk of cyberbullying victimisation. Number of Facebook friends and traditional bullying victimisation were also significant predictors of cyberbullying victimisation. These results support the hypothesis that self-presentation on Facebook can increase the likelihood of eliciting negative attention from potential perpetrators. This has important implications for the development of cyberbullying prevention and education programs that teach adolescents about measures they may take to decrease their risk for cyberbullying victimisation within social networking sites like Facebook.
What is the best way to schedule patient follow-up appointments?

What is the best way to schedule follow-up appointments? The most popular model requires the patient to negotiate a follow-up appointment time on leaving the office. This process accounts for the majority of follow-up patient scheduling. There are circumstances when this immediate appointment arrangement is not possible, however. The two common processes used to contact patients for follow-up appointments after they have left the office are the postcard reminder method and the prescheduled appointment method.



In 2001 the two methods used to contact patients for follow-up appointments after they had left the clinic were used for all 2,116 reappointment patients at an ophthalmology practice at Dartmouth-Hitchcock Medical Center. The number of completed successful appointments, the no-show rate, and patient satisfaction for each method were calculated.



A larger number of patient reappointments were completed using the prescheduled appointment procedure than the postcard reminder system (74% vs 54%). The difference between completed and pending appointments (minus no-shows) of the two methods equaled 163 patients per quarter, or 652 patients per year. Additional revenues associated with use of the prescheduled appointment letter method were estimated at $594,600 for 3 years.



Using the prescheduled appointment method with a patient notification letter is advised when patients do not schedule their appointments on the way out of the office.
Non-coding RNA networks in cancer

Thousands of unique non-coding RNA (ncRNA) sequences exist within cells. Work from the past decade has altered our perception of ncRNAs from 'junk' transcriptional products to functional regulatory molecules that mediate cellular processes including chromatin remodelling, transcription, post-transcriptional modifications and signal transduction. The networks in which ncRNAs engage can influence numerous molecular targets to drive specific cell biological responses and fates. Consequently, ncRNAs act as key regulators of physiological programmes in developmental and disease contexts. Particularly relevant in cancer, ncRNAs have been identified as oncogenic drivers and tumour suppressors in every major cancer type. Thus, a deeper understanding of the complex networks of interactions that ncRNAs coordinate would provide a unique opportunity to design better therapeutic interventions.
A client-side web application for interactive environmental simulation modeling

Recent developments in web technologies including evolution of web standards, improvements in browser performance, and the emergence of free and open-source software (FOSS) libraries are driving a general shift from server-side to client-side web applications where a greater share of the computational load is transferred to the browser. Modern client-side approaches allow for improved user interfaces that rival traditional desktop software, as well as the ability to perform simulations and visualizations within the browser. We demonstrate the use of client-side technologies to create an interactive web application for a simulation model of biochemical oxygen demand and dissolved oxygen in rivers called the Webbased Interactive River Model (WIRM). We discuss the benefits, limitations and potential uses of client-side web applications, and provide suggestions for future research using new and upcoming web technologies such as offline access and local data storage to create more advanced client-side web applications for environmental simulation modeling.  Software availability Product Title: Web-based Interactive River Model (WIRM)   JavaScript, Python Availability: http://wirm.walkerjeff.com/  Free
Chatbots' Greetings to Human-Computer Communication

Both dialogue systems and chatbots aim at putting into action communication between humans and computers. However, instead of focusing on sophisticated techniques to perform natural language understanding, as the former usually do, chatbots seek to mimic conversation. Since Eliza, the first chatbot ever, developed in 1966, there were many interesting ideas explored by the chatbots’ community. Actually, more than just ideas, some chatbots’ developers also provide free resources, including tools and large-scale corpora. It is our opinion that this know-how and materials should not be neglected, as they might be put to use in the human-computer communication field (and some authors already do it). Thus, in this paper we present a historical overview of the chatbots’ developments, we review what we consider to be the main contributions of this community, and we point to some possible ways of coupling these with current work in the human-computer communication research line.
The attentional requirements of consciousness

It has been widely claimed that attention and awareness are doubly dissociable and that there is no causal relation between them. In support of this view are numerous claims of attention without awareness, and awareness without attention. Although there is evidence that attention can operate on or be drawn to unconscious stimuli, various recent findings demonstrate that there is no empirical support for awareness without attention. To properly test for awareness without attention, we propose that a stimulus be studied using a battery of tests based on diverse, mainstream paradigms from the current attention literature. When this type of analysis is performed, the evidence is fully consistent with a model in which attention is necessary, but not sufficient, for awareness.
Runtime Monitoring for Safety-Critical Embedded Systems

The trend towards more commercial-off-the-shelf (COTS) components in complex safety-critical systems is increasing the difficulty of verifying system correctness. Runtime verification (RV) is a lightweight technique to verify that certain properties hold over execution traces. RV is usually implemented as runtime monitors that can be used as runtime fault detectors or test oracles to analyze a system under test for bad behaviors. Most existing RV methods utilize some form of system or code instrumentation and thus are not designed to monitor potentially black-box COTS components. This thesis presents a suitable runtime monitoring framework for monitoring safety-critical embedded systems with black-box components. We provide an end-to-end framework including proven correct monitoring algorithms, a formal specification language with semi-formal techniques to map the system onto our formal system trace model, specification design patterns to aid translating informal specifications into the formal specification language, and a safety-case pattern example showing the argument that our monitor design can be safely integrated with a target system. We utilized our monitor implementation to check test logs from several system tests. We show the monitor being used to check system test logs offline for interesting properties. We also performed real-time replay of logs from a system network bus, demonstrating the feasibility of our embedded monitor implementation in real-time operation.
Vaccinium arctostaphylos, a common herbal medicine in Iran: molecular and biochemical study of its antidiabetic effects on alloxan-diabetic Wistar rats.

The purpose of this study was to define antidiabetic effects of fruit of Vaccinium arctostaphylos L. (Ericaceae) which is traditionally used in Iran for improving of health status of diabetic patients.



Firstly, we examined the effect of ethanolic extract of Vaccinium arctostaphylos fruit on postprandial blood glucose (PBG) after 1, 3, 5, 8, and 24h following a single dose administration of the extract to alloxan-diabetic male Wistar rats. Also oral glucose tolerance test was carried out. Secondly, PBG was measured at the end of 1, 2 and 3 weeks following 3 weeks daily administration of the extract. At the end of treatment period the pancreatic INS and cardiac GLUT-4 mRNA expression and also the changes in the plasma lipid profiles and antioxidant enzymes activities were assessed. Finally, we examined the inhibitory activity of the extract against rat intestinal α-glucosidase.



The obtained results showed mild acute (18%) and also significant chronic (35%) decrease in the PBG, significant reduction in triglyceride (47%) and notable rising of the erythrocyte superoxide dismutase (57%), glutathione peroxidase (35%) and catalase (19%) activities due to treatment with the extract. Also we observed increased expression of GLUT-4 and INS genes in plant extract treated Wistar rats. Furthermore, in vitro studies displayed 47% and 56% inhibitory effects of the extract on activity of intestinal maltase and sucrase enzymes, respectively.



Findings of this study allow us to establish scientifically Vaccinium arctostaphylos fruit as a potent antidiabetic agent with antihyperglycemic, antioxidant and triglyceride lowering effects.