LLukas22/scidocs huggingface dataset:
Distributed mobility load balancing with RRM in LTE

With the rapid growth of mobile communications, deployment and maintenance of cellular mobile networks are becoming more and more complex, time consuming, and expensive. In order to meet the requirements of network operators and service providers, the telecommunication industry and international standardization bodies have recently paid intensive attention to the research and development of self-organizing networks. As one of the most important self-optimization issues for Long Term Evolution (LTE), load balancing is highly concerned because of large demand of resources, time-varying traffic and market side reasons. In this paper, we introduce a novel distributed mobility load balancing algorithm through adjusting Radio Resource Management (RRM) parameters dynamically based on the source cell load and its neighboring cell condition. By setting different RRM parameters for different neighboring cell, the load can be directed to the target neighboring cells without causing much degradation of user's satisfaction.
How the FLOSS Research Community Uses Email Archives

Artifacts of the software development process, such as source code or emails between developers, are a frequent object of study in empirical software engineering literature. One of the hallmarks of free, libre, and open source software (FLOSS) projects is that the artifacts of the development process are publicly-accessible and therefore easily collected and studied. Thus, there is a long history in the FLOSS research community of using these artifacts to gain understanding about the phenomenon of open source software, which could then be compared to studies of software engineering more generally. This paper looks specifically at how the FLOSS research community has used email artifacts from free and open source projects. It provides a classification of the relevant literature using a publicly-available online repository of papers about FLOSS development using email. The outcome of this paper is to provide a broad overview for the software engineering and FLOSS research communities of how other researchers have used FLOSS email message artifacts in their work. DOI: 10.4018/jossp.2012010103 38 International Journal of Open Source Software and Processes, 4(1), 37-59, January-March 2012 Copyright © 2012, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited. and how email is collected for use as a research artifact. Relevant papers were read in order to determine where the emails have been stored, how they have been cleaned, processed, and analyzed, and how the results have been saved or published. Outcomes of this work are two-fold. First, it will be useful to gather in one place the vast body of literature from the FLOSS community that relies on email artifacts. Earlier work by Crowston et al. (2012) is an examination of the FLOSS literature in the large, covering nearly every aspect of empirical research in this area. Our study will be a more in-depth examination of exactly one type of research artifact or data source, and how it has been used. Second, the results of this email artifact survey can guide the leaders of FLOSS data repositories. Three such repositories are FLOSSmole (Howison et al., 2006), SRDA (Van Antwerp & Madey, 2008), and FLOSSMetrics (Herraiz et al., 2009). Results here can indicate which artifacts are being used as data in the field, as reflected in its literature, so that these repositories are collecting and storing the emails in a way that is most helpful to the research community. To achieve these outcomes, the Motivation section outlines in more detail the reasons for doing this survey, and lists the four research questions. The Background section describes the technical foundations for inquiring about email as an artifact of the development process. The Method section explains the structure for the classification process, including an outline of the broad categories of papers and their relation to each other. Following this is a section that includes the Results of the classification, followed by the Limitations and Future Work section.
Performance evaluation of a micro ultrasonic motor using a one-cubic-millimeter stator

A piezoelectric ultrasonic motor has two significant advantages, high energy density and simple structure, and these advantages can help in the miniaturization of the motor. We build a prototype micro ultrasonic motor using a stator with a volume of approximately 1 cubic millimeter. To evaluate its representative performance values (torque, angular velocity, and energy efficiency), we built an experimental setup and operated the prototype motor by varying experimental conditions, such as the preload between the stator and rotor and the amplitude of voltages applied to motor. The performance values obtained at the millimeter to sub-millimeter scale are discussed analytically using the macro scale models of ultrasonic motors. Experimentally, the prototype motor has generated a torque of more than 10 μNm with a 1-cubic-millimeter stator. The motor described herein is now the smallest micro ultrasonic motor with a practical torque, although its efficiency is still low.
Cardiac rehabilitation improves functional capacity and patient-reported health status in patients with continuous-flow left ventricular assist devices: the Rehab-VAD randomized controlled trial.

OBJECTIVES
This study examined the effects of a cardiac rehabilitation (CR) program on functional capacity and health status (HS) in patients with newly implanted left ventricular assist devices (LVADs).


BACKGROUND
Reduced functional capacity and HS are independent predictors of mortality in patients with heart failure. CR improves both, and is related to improved outcomes in patients with heart failure; however, there is a paucity of data that describe the effects of CR in patients with LVADs.


METHODS
Enrolled subjects (n = 26; 7 women; age 55 ± 13 years; ejection fraction 21 ± 8%) completed a symptom-limited cardiopulmonary exercise test, the Kansas City Cardiomyopathy Questionnaire (KCCQ), a 6-min walk test (6MW), and single-leg isokinetic strength test before 2:1 randomization to CR versus usual care. Subjects in the CR group underwent 18 visits of aerobic exercise at 60% to 80% of heart rate reserve. Within-group changes from baseline to follow-up were analyzed with a paired t-test, whereas an independent t-test was used to determine differences in the change between groups.


RESULTS
Within-group improvements were observed in the CR group for peak oxygen uptake (10%), treadmill time (3.1 min), KCCQ score (14.4 points), 6MW distance (52.3 m), and leg strength (17%). Significant differences among groups were observed for KCCQ, leg strength, and total treadmill time.


CONCLUSIONS
Indicators of functional capacity and HS are improved in patients with continuous-flow LVADs who attend CR. Future trials should examine the mechanisms responsible for these improvements, and if such improvements translate into improved clinical outcomes. (Cardiac Rehabilitation in Patients With Continuous Flow Left Ventricular Assist Devices:Rehab VAD Trial [RehabVAD]; NCT01584895).
Feeling bad on Facebook: depression disclosures by college students on a social networking site.

BACKGROUND
Depression is common and frequently undiagnosed among college students. Social networking sites are popular among college students and can include displayed depression references. The purpose of this study was to evaluate college students' Facebook disclosures that met DSM criteria for a depression symptom or a major depressive episode (MDE).


METHODS
We selected public Facebook profiles from sophomore and junior undergraduates and evaluated personally written text: "status updates." We applied DSM criteria to 1-year status updates from each profile to determine prevalence of displayed depression symptoms and MDE criteria. Negative binomial regression analysis was used to model the association between depression disclosures and demographics or Facebook use characteristics.


RESULTS
Two hundred profiles were evaluated, and profile owners were 43.5% female with a mean age of 20 years. Overall, 25% of profiles displayed depressive symptoms and 2.5% met criteria for MDE. Profile owners were more likely to reference depression, if they averaged at least one online response from their friends to a status update disclosing depressive symptoms (exp(B) = 2.1, P <.001), or if they used Facebook more frequently (P <.001).


CONCLUSION
College students commonly display symptoms consistent with depression on Facebook. Our findings suggest that those who receive online reinforcement from their friends are more likely to discuss their depressive symptoms publicly on Facebook. Given the frequency of depression symptom displays on public profiles, social networking sites could be an innovative avenue for combating stigma surrounding mental health conditions or for identifying students at risk for depression.
A 14-Item Mediterranean Diet Assessment Tool and Obesity Indexes among High-Risk Subjects: The PREDIMED Trial

OBJECTIVE
Independently of total caloric intake, a better quality of the diet (for example, conformity to the Mediterranean diet) is associated with lower obesity risk. It is unclear whether a brief dietary assessment tool, instead of full-length comprehensive methods, can also capture this association. In addition to reduced costs, a brief tool has the interesting advantage of allowing immediate feedback to participants in interventional studies. Another relevant question is which individual items of such a brief tool are responsible for this association. We examined these associations using a 14-item tool of adherence to the Mediterranean diet as exposure and body mass index, waist circumference and waist-to-height ratio (WHtR) as outcomes.


DESIGN
Cross-sectional assessment of all participants in the "PREvención con DIeta MEDiterránea" (PREDIMED) trial.


SUBJECTS
7,447 participants (55-80 years, 57% women) free of cardiovascular disease, but with either type 2 diabetes or ≥ 3 cardiovascular risk factors. Trained dietitians used both a validated 14-item questionnaire and a full-length validated 137-item food frequency questionnaire to assess dietary habits. Trained nurses measured weight, height and waist circumference.


RESULTS
Strong inverse linear associations between the 14-item tool and all adiposity indexes were found. For a two-point increment in the 14-item score, the multivariable-adjusted differences in WHtR were -0.0066 (95% confidence interval, -0.0088 to -0.0049) for women and -0.0059 (-0.0079 to -0.0038) for men. The multivariable-adjusted odds ratio for a WHtR>0.6 in participants scoring ≥ 10 points versus ≤ 7 points was 0.68 (0.57 to 0.80) for women and 0.66 (0.54 to 0.80) for men. High consumption of nuts and low consumption of sweetened/carbonated beverages presented the strongest inverse associations with abdominal obesity.


CONCLUSIONS
A brief 14-item tool was able to capture a strong monotonic inverse association between adherence to a good quality dietary pattern (Mediterranean diet) and obesity indexes in a population of adults at high cardiovascular risk.
Effect of humic acids on phosphate level and energetic metabolism of tobacco BY-2 suspension cell cultures.

Abstract To investigate the role of natural humic substances on plant cell phosphate level and metabolism, tobacco BY-2 suspension cell cultures were grown in the presence of humic samples of different chemical composition: soil humic acid and its three size-fractions (I–III) separated by High Pressure Size Exclusion Chromatography. The humic samples were characterized by CPMAS-NMR spectroscopy and on-line pyrolysis–gas chromatography–mass spectrometry. Suspension cell cultures, after 7 days of incubation, were facing Pi starvation. The fraction III, the most hydrophilic and smallest in molecular size among humic samples, induced a partial relief from Pi starvation, increasing total cell phosphate amount, ATP and glucose-6-phosphate levels, as well as the activity of secreted acid phosphatases. Furthermore, fraction III induced a decrease of KCN-insensitive respiration, evaluated in both suspension cells and isolated mitochondria. The low amount of acidic groups in fraction III excluded that its observed effect in relieving cells from Pi deficiency may be attributed to a partial replacement of the chelating ability of secreted acids (mainly citric and malic acids) in releasing Pi from metal–phosphate complexes. The molecular characteristics of fraction III are conducive to a flexible conformational structure due to hydrophilic domains, which are still contoured by hydrophobic moieties such as alkyl and aromatic compounds. Such flexible molecular associations may induce an efficient release of Pi from organic sources (e.g. nucleic acids), released in the media by damaged or dead cells, exerting a sort of positive effect on either the production or activity of extracellular Pi hydrolytic enzymes. This work shows that only by combining advanced molecular characterization of natural humic molecules with their effect on plant cells, it is possible to formulate sound hypotheses for structure–activity relationships.
Mindfulness-based stress reduction is associated with improved glycemic control in type 2 diabetes mellitus: a pilot study.

CONTEXT
Psychological distress is linked with impaired glycemic control among diabetics.


OBJECTIVE
Estimate changes in glycemic control, weight, blood pressure, and stress-related psychological symptoms in patients with type 2 diabetes participating in a standard Mindfulness Based Stress Reduction (MBSR) program.


DESIGN
Prospective, observational study.


SETTING
Academic health center.


PATIENTS
Adult patients with type 2 diabetes mellitus.


INTERVENTIONS
Participation in MBSR program for heterogeneous patient population. Diet and exercise regimens held constant.


MAIN OUTCOME MEASURES
Glycosylated hemoglobin A1c (HA1c), blood pressure, body weight, and Symptom Checklist 90-Revised (anxiety, depression, somatization, and general psychological distress scores).


RESULTS
Eleven of 14 patients completed the intervention. At 1 month follow-up, HA1c was reduced by 0.48% (P = .03), and mean arterial pressure was reduced by 6 mmHg (P = .009). Body weight did not change. A decrease in measures of depression, anxiety, and general psychological distress was observed.
Passive dynamic walking with elastic energy

This paper presents passive dynamic walking with elastic energy. We propose a new type of passive dynamic walking robot. by adding elastic materials such as spring or rubber between a supporting leg and a swing leg of the robot By utilizing restoring force of spring or rubber, we can make the passive dynamic walking robot easily walk since the crotch angle between legs is restricted. In this paper, we firstly derive dynamics of the passive dynamic walking robot with elastic energy. Next, we show the effectiveness of adding elastic energy by computer simulation. Finally, we make the actual passive dynamic walking robot with elastic energy and carry out walking experiments.
Multicentre phase II study of cisplatin-etoposide chemotherapy for advanced large-cell neuroendocrine lung carcinoma: the GFPC 0302 study.

BACKGROUND
The optimal treatment of large-cell neuroendocrine carcinoma (LCNEC) of the lung remains unclear. Here, our primary objective was to assess the efficacy of cisplatin-etoposide doublet chemotherapy in advanced LCNEC. Accuracy of the pathological diagnosis and treatment toxicity were assessed as secondary objectives.


PATIENTS AND METHODS
Prospective, multicentre, single-arm, phase II study with a centralised review of treatment-response and pathological data. Patients had untreated performance status (PS) 0/1 stage IV/IIIB LCNEC and received cisplatin (80 mg/m22 d1) and etoposide (100 mg/m22 d1-3) every 21 days.


RESULTS
Eighteen centres included 42 patients (mean age, 59 ± 9 years; 69% men; median of four cycles/patient). At least one grade-3/4 toxicity occurred in 59% of patients (neutropaenia, thrombocytopaenia, and anaemia in 32%, 17%, and 12%, respectively). The median progression-free survival (PFS) and overall survival (OS) were 5.2 months (95% confidence interval, CI, 3.1-6.6) and 7.7 months (95% CI, 6.0-9.6), respectively. The centralised pathologist review reclassified 11 of 40 (27.5%) patients: 9 as small-cell lung cancer, 1 as undifferentiated non-small-cell lung cancer, and 1 as atypical carcinoid. Survival data were not significantly changed by excluding the reclassified patients.


CONCLUSIONS
The pathological diagnosis of LCNEC is difficult. The outcomes of advanced LCNEC treated with cisplatin-etoposide doublets are poor, similar to those of patients with advanced small-cell lung carcinoma (SCLC).
Does parental sexual orientation matter? A longitudinal follow-up of adoptive families with school-age children.

Controversy continues to surround parenting by lesbian and gay (LG) adults and outcomes for their children. As sexual minority parents increasingly adopt children, longitudinal research about child development, parenting, and family relationships is crucial for informing such debates. In the psychological literature, family systems theory contends that children's healthy development depends upon healthy family functioning more so than family structure. From the framework of family stress theory, it was expected that longitudinal outcomes for school-age children adopted in infancy could be distinct among those with same-sex versus other-sex parents (N = 96 families). Similar findings were hypothesized in terms of parent adjustment, couple relationships, and family functioning in comparing same-sex and other-sex parent families. Results indicated that adjustment among children, parents, and couples, as well as family functioning, were not different on the basis of parental sexual orientation (lesbian, gay, or heterosexual) when children were school-age. Rather, children's behavior problems and family functioning during middle childhood were predicted by earlier child adjustment issues and parenting stress. These findings are consistent with and extend previous literature about families headed by LG parents, particularly those that have adopted children. The results have implications for advancing supportive policies, practices, and laws related to adoption and parenting by sexual minority adults. (PsycINFO Database Record
Development of a clinical prediction score for congestive heart failure diagnosis in the emergency care setting: The Brest score.

OBJECTIVE
To derive and validate a clinical prediction rule of acute congestive heart failure obtainable in the emergency care setting.


DESIGN
Derivation of the score was performed on a retrospective 927 patients cohort admitted to our Emergency Department for dyspnea. The prediction model was externally validated on an independent 206-patient prospective cohort.


INTERVENTIONS AND MEASURES
During the derivation phase, variables associated with acute congestive heart failure were included in a multivariate regression model. Logistic regression coefficients were used to assign scoring points to each variable. During the validation phase, every diagnosis was confirmed by an independent adjudication committee.


RESULTS
The score comprised 11 variables: age ≥65 years (1 point), seizure dyspnea (2 points), night outbreak (1 point), orthopnea (1 point), history of pulmonary edema (2 points), chronic pulmonary disease (-2 points), myocardial infarction (1 point), crackles (2 points), leg edema (1 point), ST-segment abnormality (1 point), atrial fibrillation/flutter (1 point) on electrocardiography. In the validation step, 30 patients (14.6%) had a low clinical probability of acute congestive heart failure (score ≤3), of which only 2 (6.7%) had a proven acute cardiogenic pulmonary edema. The prevalence of acute congestive heart failure was 58.5% in the 94 patients with an intermediate probability (score of 4-8) and 91.5% in the 82 patients (39.8%) with a high probability (score ≥9).


CONCLUSION
This score of acute congestive heart failure based on easily available and objective variables is entirely standardized. Applying the score to dyspneic adult emergency patients may enable a more rapid and efficient diagnostic process.
Ring Oscillator PUF Design and Results

A Physical Unclonable Function (PUF) is a function in some physical device that is easy to evaluate but hard to predict. In many ways it is the hardware equivalent of a mathematical one-way function. Every challenge should map to a specific response, but this mapping should be impossible to predict and different for every physical device. An on-chip PUF is very useful for several reasons. First, it provides a way to uniquely identify a given device. This could be used for secure chip authentication or for protection of Intellectual Property. Second, since an FPGA PUF is based on intrinsic randomness, it could also serve as a Random Number Generator. Finally, and most importantly, a PUF provides all this functionality without storing any secret information on the chip. Most solutions to the previously listed problems involve storing some type of key or seed value on the chip. This poses many security hazards. However, a PUF relies on the characteristics of the chip itself, which are considered impossible to observe and duplicate. There are a wide variety of PUF designs, but the only ones relavant to our interests are those that can be implemented on an FPGA. There are basically five designs that meet these requirements. 1)The first PUF designed for an FPGA was introduced in [1]. The proposed ”Arbiter PUF” design can be seen in Figure 1. Two paths are created by connecting a number of ”switch delay elements” in series. Each element uses a two-to-one multiplexer to control which path is taken by the inputs. The challenge bits X are used as the select bits to the multiplexers, and the response of the PUF is based on which path leads to the faster signal propogation.