nils-herrmann/clean_scirepeval huggingface dataset:
Ultrasonic heat transfer enhancement on different structural tubes in LiBr solution

A LiBr absorption refrigeration system that uses solar energy is a promising alternative to traditional air conditioning systems. However, its overall efficiency is low due to the poor boiling heat transfer of the LiBr solution. This paper investigates the ultrasonic heat transfer enhancement on three different structural tubes (smooth, screwed and finned) in LiBr solution in the sub cooled boiling regime. The pool boiling heat transfer performance of the LiBr solution is investigated, and the characteristics of the boiling heat transfer, which are driven by the ultrasonic field, are described using bubble dynamics, which are numerically determined by the Rayleigh Plesset (R P) equation. The effects of ultrasonic parameters (e.g. frequency, power) on the boiling heat transfer of the three different structural tubes are investigated, and the sound pressure distribution around the tested tubes that is calculated by a two dimensional numerical model is used to describe the mechanism of the ultrasonic heat transfer enhancement. Additionally, a high speed camera is used to take images of the bubbles in the structural tubes to help analyze the mechanism.
Spatio temporal Pattern discovery in sensor data: A multivalued decision systems approach
Venue: Knowl. Based Syst.

Uses multivalued decision systems for spatio temporal pattern recognition.Discovers local spatio temporal rules from cluster heads of sensors.Incorporates rough set inference to reason with space time variant data.Achieves data compression by using compact rules from the nodes to the sinks.Preserves underlying data semantics and quantifies uncertainty parameters. Discovering novel and interesting spatio temporal patterns in sensor data is a major challenge in many scientific domains. Such data are often continuous, unbounded, and associated with high speed, time variant distribution with local and spatial trends. This paper presents a formalism that includes an extension of classical rough set inference mechanism to reason with space time variant data streams. The concept of multivalued decision systems has been used to account for multiple patterns in a single time window or snapshot. Such patterns or templates are incorporated in rough set based rule induction process. A framework for sensor data integration is illustrated by using a space time clustering mechanism followed by the generation of templates and local rules from such clusters. The multivalued decision system allows mining complex multiple patterns instead of a single value in a given template without requiring complex feature transformation. It also allows us to quantify and estimate potential data compression and associated uncertainty parameters. Finally, the results are validated and compared with other related algorithms. In general, the framework will help us understand the underlying reasoning mechanism about the "part and whole" or spatio temporal mereological relationship without sacrificing the semantics of the sensor data attributes.
Child abuse and physical health in adulthood.
Venue: Health reports

A large literature exists on the association between child abuse and mental health, but less is known about associations with physical health. The study objective was to determine if several types of child abuse were related to an increased likelihood of negative physical health outcomes in a nationally representative sample of Canadian adults.  Data are from the 2012 Canadian Community Health Survey Mental Health (n 23,395) The study sample was representative of the Canadian population aged 18 or older. Child physical abuse, sexual abuse, and exposure to intimate partner violence were assessed in relation to self perceived general health and 13 self reported, physician diagnosed physical conditions.  All child abuse types were associated with having a physical condition (odds ratios 1.4 to 2.0) and increased odds of obesity (odds ratios 1.2 to 1.4) Abuse in childhood was associated with arthritis, back problems, high blood pressure, migraine headaches, chronic bronchitis/emphysema/COPD, cancer, stroke, bowel disease, and chronic fatigue syndrome in adulthood, even when sociodemographic characteristics, smoking, and obesity were taken into account (odds ratios 1.1 to 2.6) Child abuse remained significantly associated with back problems, migraine headaches, and bowel disease when further adjusting for mental conditions and other physical conditions (odds ratios 1.2 to 1.5) Sex was a significant moderator between child abuse and back problems, chronic bronchitis/emphysema/COPD, cancer, and chronic fatigue syndrome, with slightly stronger effects for women than men.  Abuse in childhood was associated with increased odds of having 9 of the 13 physical conditions assessed in this study and reduced self perceived general health in adulthood. Awareness of associations between child abuse and physical conditions is important in the provision of health care.
Conformal geometry of timelike curves in the (1+2) Einstein universe

We study the conformal geometry of timelike curves in the 1 2 Einstein universe, the conformal compactification of Minkowski 3 space defined as the quotient of the null cone of R 2 3 by the action by positive scalar multiplications. The purpose is to describe local and global conformal invariants of timelike curves and to address the question of existence and properties of closed trajectories for the conformal strain functional. Some relations between the conformal geometry of timelike curves and the geometry of knots and links in the 3 sphere are discussed.
Mutual Coupling Reduction for UWB MIMO Antennas With a Wideband Neutralization Line
Venue: IEEE Antennas and Wireless Propagation Letters

A wideband neutralization line is proposed to reduce the mutual coupling of a compact ultrawideband (UWB) multiple input multiple output (MIMO) antenna. With the introduced decoupling method, the designed UWB MIMO antenna covers the band of 3.1 5 GHz with an isolation of higher than 22 dB. The proposed wideband neutralization line is not necessarily placed in the clearance area between two MIMO elements and can be put above the copper ground. A small clearance (antenna area) of 35 x16 mm2 is achieved. The designed UWB MIMO antenna is fabricated. Sparameters, radiation patterns, total efficiency, and realized gain of the prototype are measured and compared to the simulations.
Compact Dual Polarized UWB Quasi Self Complementary MIMO/Diversity Antenna With Band Rejection Capability
Venue: IEEE Antennas and Wireless Propagation Letters

A novel compact ultrawideband (UWB) multiple input multiple output (MIMO) antenna system with dual polarization and band rejection capabilities is proposed. The proposed MIMO antenna system consists of two quasi self complementary (QSC) antenna elements. The elements are arranged orthogonally and fed perpendicularly to obtain polarization diversity. High isolation can be achieved without additional decoupling structure owing to the inherent advantage of the self complementary structure. Notched band at WLAN system can be realized by etching a bent slit in each of the radiating elements. Moreover, a four element MIMO system is also proposed and investigated to fully reveal its potential use. Diversity performance in terms of envelope correlation coefficient (ECC) and the mean effective gain (MEG) ratio are studied. Measured results show that the proposed antenna has a wide bandwidth ranging from 3 to 12 GHz with band rejection at WLAN system and high port isolation (S12 20 dB at most of the band) which demonstrate the proposed MIMO/diversity antenna system can be a good candidate for UWB applications.
MicroRNA 155 Promotes the Directional Migration of Resident Smooth Muscle Progenitor Cells by Regulating Monocyte Chemoattractant Protein 1 in Transplant Arteriosclerosis
Venue: Arteriosclerosis, thrombosis, and vascular biology

Smooth muscle like cells are major cell components of transplant arteriosclerosis lesions. This study investigated the origin of the smooth muscle like cells, the mechanisms responsible for their accumulation in the neointima, and the factors that drive these processes.  A murine aortic transplantation model was established by transplanting miR 155 bone marrow cells into miR 155+ mice. MicroRNA 155 was found to play a functional role in the transplant arteriosclerosis. Moreover, we found that the nonbone marrow derived progenitor cells with markers of both early differentiated smooth muscles and stem cells in the allograft adventitia were smooth muscle progenitor cells. Purified smooth muscle progenitor cells expressed a mature smooth muscle cell marker when induced by platelet derived growth factor BB in vitro. In vivo, these cells could migrate into the intima from the adventitia and could contribute to the neointimal hyperplasia. The loss of microRNA 155 in bone marrow derived cells decreased the concentration gradient of monocyte chemoattractant protein 1 between the intima and the adventitia of the allografts, which reduced the migration of smooth muscle progenitor cells from the adventitia into the neointima.  This study demonstrated that microRNA 155 promoted the directional migration of smooth muscle progenitor cells from the adventitia by regulating the monocyte chemoattractant protein 1 concentration gradient, which aggravated transplant arteriosclerosis.
Life Orientation Test Revised (LOT R) Versus Academic Score in Various First Year Health Professional Students.
Venue: Journal of clinical and diagnostic research JCDR

Health field per se requires mental, physical and psychological steadiness and wellbeing. In modern times decline in psychological and physical health has been observed in student after admission in health education program. Factors like perfectionism, self esteem, personal and professional consequence have affected their academic score directly or indirectly. Life Orientation Test Revised (LOT R) instrument measures optimism in relation to self esteem of individual. A better score will show more confidence level of the student.  To find an association of LOT R with the academic score of health professional students and assess gender variation.  A total of 350 students enrolled for academic year 2015 16 in health professional program of medicine, dental and physiotherapy institutes of Sumandeep Vidyapeeth University were considered. Non randomized and purposive study was done by providing LOT R questionnaire to students. Average academic score of Anatomy and Physiology course was used for analysis excluding the biochemistry due to non availability of tangible data at the time of study. Data was collected, analysed statistically using independent t test, ANOVA with post hoc and correlation analysis.  Statistical significant for one way ANOVA was assessed for academic score between the group of health professional students. While no statistical correlation of significance was observed for LOT R score with that of academic score. As per gender distribution there was no statistical significant observation for LOT R score within the groups.  The present study highlighted the need of student's counseling for their approach towards health education; as their career. Psychological self reliance and optimism improves the academic score. A study needs to be compared with the socio economic status of the student to have a better understanding of the LOT R.
The Four Cs of disaster partnering: communication, cooperation, coordination and collaboration.
Venue: Disasters

Public, nonprofit and private organisations respond to large scale disasters domestically and overseas. Critics of these assistance efforts, as well as those involved, often cite poor interorganisational partnering as an obstacle to successful disaster response. Observers frequently call for 'more' and 'better' partnering. We found important qualitative distinctions existed within partnering behaviours. We identified four different types of interorganisational partnering activities often referred to interchangeably: communication, cooperation, coordination and collaboration the Four Cs. We derived definitions of the Four Cs from the partnering literature. We then tested them in a case study of the response to the 2010 Haiti earthquake. We suggest that the Four Cs are distinct activities, that organisations are typically strong or weak in one or more for various reasons, and that the four terms represent a continuum of increased interorganisational embeddedness in partnering activities.
A Typology of School Community Relationships

School community relationships can serve many goals ranging from enhancing student achievement to community development. This article examines the relationship between school community partnerships and community development in light of a state prekindergarten policy that requires partnering. To understand the local responses, we propose a typology using a continuum of partnering, from isolation to committed partner, and a continuum of community health, from declining to growth. Using mixed method analysis, we apply this typology to the Universal Prekindergarten policy in New York State. The relationship among these measures illustrates the potential role of state education policy to positively or negatively affect the health of a community.
Chaos Based Image Encryption using Expand Shrink Concept

Revised May 15, 2014 Accepted May 20, 2014 Image information security plays a vital role in computing and communication technologies. This paper describes a new concept of expand and shrink to enhance the strength of chaos based image encryption technique. This method consists of both permutations as well as substitution process for image scrambling and encryption. In permutation plain image is shuffled using chaos technique. Input image undergo two times chaos permutation in between expand and shrink process leads to substitution. Permutation decreases the correlation between the pixel and substitution increases the entropy of encrypted image. Proposed encryption technique works for both gray scale and color image. From the experiment highly scrambled image is obtained at the end of encryption process. Decryption process employs exactly reverse process of encryption which results in the reconstructed images.
Study of the Influence of the Banking Sector Development on the Inflows of Foreign Investment in Nigeria and Ghana

The level of bank development has a determinant effect on the growth potentials of a developing economy. In response, this study examined the impact of banking sector development on foreign investment inflows in the West African countries of Nigeria and Ghana. The study relied on secondary data for analysis and made use of multiple regression technique. However, to ensure the authenticity of our result, Augmented Dickey Fuller unit root test and Johansen Cointegration techniques were respectively employed to test for the presence unit root and long run equilibrium relationship in the exogenous variables. Additionally, causal relationships were tested with Granger Causality. It was revealed that banking sector development has a significant influence on foreign investment inflows in the two West African countries. Specifically, domestic credit to private sector and bank deposit rate has significant influence on foreign investment inflows in both countries. Whereas domestic credit to private sector is directly related to the dependent variable in Ghana, it is related inversely in Nigeria. It was also discovered that bank lending rate is significantly and positively related to foreign investment in Ghana. Intermediation efficiency and profitability of banks should be improved by enhancing the capital structure and adopting the appropriate lending rate especially in Nigeria as measures to attract more inflows of foreign investment in both countries.
Four (algorithms) in one (bag) an integrative framework of knowledge for teaching the standard algorithms of the basic arithmetic operations

In this article we present an integrative framework of knowledge for teaching the standard algorithms of the four basic arithmetic operations. The framework is based on a mathematical analysis of the algorithms, a connectionist perspective on teaching mathematics and an analogy with previous frameworks of knowledge for teaching arithmetic operations with rational numbers. In order to evaluate the potential applicability of the framework to task design, it was used for the design of mathematical learning tasks for teachers. The article includes examples of the tasks, their theoretical analysis, and empirical evidence of the sensitivity of the tasks to variations in teachers' knowledge of the subject. This evidence is based on a study of 46 primary school teachers. The article concludes with remarks on the applicability of the framework to research and practice, highlighting its potential to encourage teaching the four algorithms with an emphasis on conceptual understanding.
Parametric analysis of radar cross section of metamaterial coated cylindrical surface
Venue: 2016 International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET)

The study of electromagnetic (EM) scattering from canonical structures is of prime interest, for the estimation of RCS of complex aerospace structures. Metamaterials exhibit special EM characteristics which may be useful in radar cross section (RCS) control. This motivates the parametric analysis of RCS of metamaterial coated structures. In this paper, an infinitely long PEC cylinder with one and two layers of metamaterial coating is considered. An analytical formulation is derived for the RCS of the coated cylinder, with the EM fields expressed as series summation of cylindrical wave functions. The unknown coefficients are obtained by applying appropriate boundary conditions and far field RCS is computed in terms of scattered field coefficients. Using this formulation, parametric analysis of RCS of coated cylinder is carried out and compared with that of the bare cylinder. The effect of constitutive material parameters of the coating and frequency on cylinder RCS is studied for both principal polarizations, with focus on RCS reduction.
A Dual Perturbation Approach for Differential Private ADMM Based Distributed Empirical Risk Minimization
Venue: AISec@CCS

The rapid growth of data has raised the importance of privacy preserving techniques in distributed machine learning. In this paper, we develop a privacy preserving method to a class of regularized empirical risk minimization (ERM) machine learning problems. We first decentralize the learning algorithm using the alternating direction method of multipliers (ADMM) and propose the method of dual variable perturbation to provide dynamic differential privacy. The mechanism leads to a privacy preserving algorithm under mild conditions of the convexity and differentiability of the loss function and the regularizer. We study the performance of the algorithm measured by the number of data points required to achieve a bounded error. To design an optimal privacy mechanism, we analyze the fundamental tradeoff between privacy and accuracy, and provide guidelines to choose privacy parameters. Numerical experiments using the real world database are performed to corroborate the results on the privacy and utility tradeoffs and design.
Performance driven instrumentation and mapping strategies using the LARA aspect oriented programming approach
Venue: Softw. Pract. Exp.

The development of applications for high performance embedded systems is a long and error prone process because in addition to the required functionality, developers must consider various and often conflicting nonfunctional requirements such as performance and/or energy efficiency. The complexity of this process is further exacerbated by the multitude of target architectures and mapping tools. This article describes LARA, an aspect oriented programming language that allows programmers to convey domain specific knowledge and nonfunctional requirements to a toolchain composed of source to source transformers, compiler optimizers, and mapping/synthesis tools. LARA is sufficiently flexible to target different tools and host languages while also allowing the specification of compilation strategies to enable efficient generation of software code and hardware cores (using hardware description languages) for hybrid target architectures a unique feature to the best of our knowledge not found in any other aspect oriented programming language. A key feature of LARA is its ability to deal with different models of join points, actions, and attributes. In this article, we describe the LARA approach and evaluate its impact on code instrumentation and analysis and on selecting critical code sections to be migrated to hardware accelerators for two embedded applications from industry.
Pedagogical and Performance Aspects of Three American Compositions for Solo Piano: John Corigliano's Fantasia on an Ostinato, Miguel del Aguila's Conga for Piano, and William Bolcom's Nine New Bagatelles

Pedagogical and Performance Aspects of Three American Compositions for Solo Piano: John Corigliano's Fantasia on an Ostinato, Miguel del Aguila's Conga for Piano, and William Bolcom's Nine New Bagatelles
Validation of a method using Taguchi, response surface, neural network, and genetic algorithm

Piston is one of the important parts for aircraft engine, and the quality of piston affects the efficiency and safety of the engine. This study applies Taguchi method, response surface methodology (RSM) and back propagation neural networks (BPNN) combining with genetic algorithm (GA) on the quality improvement of piston manufacturing processes to enhance the process yield. The Taguchi parameter design concerns three nominal the best specifications, including ring groove diameter specification, inner groove diameter specification, and inner diameter of pistons. Together with five control factors consisting of (1) type of carbon steel, (2) type of cutting fluid, (3) cutting depth, (4) spindle speed, and (5) chuck pressure, the L27(313) orthogonal array was selected for this experiment. Three models: (1) Taguchi model, (2) Taguchi_RSM model, and (3) Taguchi_BPNN_GA model were constructed to find the parameter combinations of five control factors for each model. Confirmation experiments were done for each model and the performances of three models were also compared to indict the enhancement of manufacturing quality of piston.
Hankel Determinants, Pade Approximations, and Irrationality Exponents

The irrationality exponent of an irrational number \xi$ which measures the approximation rate of \xi$ by rationals, is in general extremely difficult to compute explicitly, unless we know the continued fraction expansion of \xi$ Results obtained so far are rather fragmentary, and often treated case by case. In this work, we shall unify all the known results on the subject by showing that the irrationality exponents of large classes of automatic numbers and Mahler numbers (which are transcendental) are exactly equal to $2$ Our classes contain the Thue Morse Mahler numbers, the sum of the reciprocals of the Fermat numbers, the regular paperfolding numbers, which have been previously considered respectively by Bugeaud, Coons, and Guo, Wu and Wen, but also new classes such as the Stern numbers and so on. Among other ingredients, our proofs use results on Hankel determinants obtained recently by Han.
Complexity in Classroom Foreign Language Learning Motivation: A Practitioner Perspective from Japan

Tables and FiguresAcknowledgements 1. IntroductionPart One: Growth A Research Narrative2.  Research in Japan3. A Move to Socio Dynamic Motivation4.  Action Research NarrativePart Two: Re viewing6. Revisiting Complex Systems Theory7. Class Group as Open System8. Co Adaptation between Self and Environment9. Motivational Phase Shifts and Self Organisation across the Class Group10. Novel Motivational Emergence in the Class GroupPart Three: Reciprocity11. The Landscape of Classroom Motivation12.