Abacus-based mental calculation is a unique Chinese culture. The abacus experts can perform complex computations mentally with exceptionally fast speed and high accuracy. However, the neural bases of computation processing are not yet clearly known. This study used a BOLD contrast 3T fMRI system to explore the ...

... All parameters are fit by maximum likelihood. � 5 models for haploid data (null,A,C,G,T). ... At least 6x Haploid ABACUS Base Calls ...

Make calculations when necessary to solve real-world problems and decide whether to make the calculation mentally, on paper, or with the help of a calculator or computer.

the shape the experience of mental health and illness and the consequences of disorders for individuals, families, and communities. We will cover epidemiology research and theories of mental health and illness of calculating disability from mental disorder," British Journal of Psychiatry, 173, 123-131. Wells, K. ...

This study was conducted to analyze the impact on human's left and right brain by mental calculation based on principal components analysis (PCA). Electroencephalogram (EEG) data were collected from twenty-one people before and during mental calculation. In each subject, we first calculated the ...

Develop fluency in operations with real numbers, vectors, and matrices, using mental computation or paper-and-pencil calculations for simple cases and ...

In this activity, students will compare and contrast Chinese and Japanese abaci, and explore calculations on the Japanese abacus. They will also learn to use the abacus to display numbers and calculate sums of whole numbers. Students will then compare the abacus, the calculator and mental computation to determine ...

BackgroundSmoking has been associated with a range of mental disorders including schizophrenia, anxiety disorders and depression. People with mental illness have high rates of morbidity and mortality from smoking related illnesses such as cardiovascular disease, respiratory diseases and cancer. As many people who meet diagnostic criteria for ...

calculated. HRV feature data were obtained using two models of photoplethysmography (PPG) sensors (Freeze

29 Solve logic problems involving two sets by using elementary set logic ... mental math, calculators, or paper/pencil strategies to solve addition and ...

Comparison of calculated acoustic pressure (the solid line) with Booth's experi- mental data. Observer's distance = 100 chord lengths; angle of attack = 0. ...

Savants and prodigies are individuals with exceptional skills in particular mental domains. In the present study we used functional magnetic resonance imaging to examine neural correlates of calendar calculation in two individuals, a savant with Asperger's disorder and a self-taught mathematical prodigy. If there is a modular neural organization of ...

The ability for mental calculation represents a fundamental prerequisite for development of intelligence, which is predictive for educational and professional success in life. Many individuals with calculation difficulties are survivors of premature birth. The brain mechanisms of these deficits are, however, largely unknown. In this ...

It is necessary to monitor the daily health condition for preventing stress syndrome. In this study, it was proposed the method assessing the mental and physiological condition, such as the work stress or the relaxation, using heart rate variability at real time and continuously. The instantanuous heart rate (HR), and the ratio of the number of extreme points (NEP) and the ...

BEATCALC: Mental Math Exercises. BEATCALC will wake up your brain on Monday morning with a mental math exercise that will stimulate those gray cells. Each Monday you will receive instructions for an exercise that will enable you to do math computations mentally faster than a friend can do them on a calculator. For ...

French neurologist Jean Martin Charcot (1825-1893) and French psychologist Alfred Binet (1857-1911) are almost unknown as investigators who conducted original and fascinating studies in the area of memory. In a series of 1893 experiments, they compared the performance of two expert mental calculators, Jacques Inaudi and P�ricl�s Diamandi, in tasks that ...

We found 5-7 Hz magnetic theta waves in the frontal association cortex of adult human subjects during calculation and musical imagination by using 37-channel SQUID gradiometers. Simultaneous recording from the left and right cerebral hemispheres with two sets of 37-channel gradiometers revealed that the theta activity appeared in a waxing and waning manner in the frontal ...

Calendrical savants can name the weekdays for dates from different years with remarkable speed and accuracy. Whether calculation rather than just memory is involved is disputed. Grounds for doubting whether they can calculate are reviewed and criteria for attributing date calculation skills to them are discussed. At least some ...

The Calculators in Primary Mathematics Project in Australia was a long-term investigation into the effects of the introduction of calculators on the learning and teaching of primary mathematics. The Australian project commenced with children who were in kindergarten and grade 1 in 1990, moving up through the schools to grade 4 level by 1993. Children were ...

analysis and experi- mental results of output performance for Nd-doped double- clad fiber lasers,'' OptEfficiency of pump absorption in double-clad fiber amplifiers. III. Calculation of modes Dmitrii us to calculate the efficiency of an incoherent pump in general-geometry double-clad fibers

A discussion is provided of issues related to neuropsychological assessment of mentally retarded individuals. The first matters considered are test selection in relation to mental age and diagnostic issues. Various methods of evaluation are then considered, including assessment of orientation to sound and visual stimuli, language comprehension, right-left ...

Feature extraction for mental fatigue and relaxation states is helpful to understand the mechanisms of mental fatigue and search effective relaxation technique in sustained work environments. Experiment data of human states are often affected by external and internal factors, which increase the difficulties to extract common features. The aim of this study ...

A potential energy curve for the ground state of H/sub 2/ was approximated by a power series, and the vibrational constants calculated. They differ by plus or minus 1 cm/sup -1/ from the experi-mental values. (auth)

The project involved the construction of two Trombe wall systems to be attached to a residential building for mentally retarded persons. The construction and information phases of this project are briefly discussed. The thermal analysis and load calculations are attached.

mental basis for our calculations. belt, the inner belt electrons have been neglected ..... 'Ne Metropolis, R. Bivins, M. Storm, A. mrkevich, J. Miller, and G. .... significantly their operational life. of the clearcut low energy limit, ...

This paper argues for problems where the math can be done in one's head (with g = 10 m/s2) so that physics concepts can be stressed and calculator use de-emphasized. Examples of standard problems are presented.

MA-P-NPO-S-NO11 use mental math, pencil-and-paper methods, calculators and/or computers to explore mathematical ... using manipulatives, numbers and/or symbols.

Prodigies are individuals with exceptional mental abilities. How is it possible that some of these people mentally calculate exponentiations with high accuracy and speed? We examined CP, a mental calculation prodigy, and a control group of 11 normal calculators for moderate ...

Why is subsequent recall sometimes better for self-generated answers than for answers obtained from an external source (e.g., calculator)? In this study, we explore the relative contribution of 2 processes, recall attempts and self-computation, to this "generation effect" (i.e., enhanced answer recall relative to when problems are practiced with a ...

BackgroundA national cross-sectional survey was conducted in Japan. This is because the growing recognition of the social determinants of health has stimulated research on social capital and mental health. In recent years, systematic reviews have found that social capital may be a useful factor in the prevention of mental illness. Despite these studies, ...

Using functional magnetic resonance imaging, we investigate the variation in dynamical complexity of human brain activity for different mental loads. Our experiments measured the activity of ten subjects under three experimental conditions: a rest condition, a periodic task of finger opposition, and a task of finger opposition alternated with mathematical serial ...

Individual differences in strategy use (choice and accuracy) were analyzed. A sample of 362 Grade 6 students solved complex division problems under 2 different conditions. In the choice condition students were allowed to use either a mental or a written strategy. In the subsequent no-choice condition, they were required to use a written strategy. Latent class analysis showed ...

The population of most developed countries is rapidly aging, which has created a growing demand for home care. A key issue in medicine is supporting the increasing number of elderly patients, both physically and mentally. In this study, we developed a wearable computer that contained modules for measuring electrocardiograms (ECGs) and femoral artery pulse waves using an ...

The purpose of this study was to analyze participants' levels of hemoglobin as they performed arithmetic mental calculations using Optical Topography (OT, helmet type brain-scanning system, also known as Functional Near-Infrared Spectroscopy or fNIRS). A central issue in cognitive neuroscience involves the study of how the human brain encodes and ...