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Search Results: 1 - 10 of 240 matches for " Shay Beider "
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An Ethical Argument for Integrated Palliative Care
Shay Beider
Evidence-Based Complementary and Alternative Medicine , 2005, DOI: 10.1093/ecam/neh089
Abstract: ‘In the midst of life, we are in death’from The Book of Common PrayerThe Palliative Care, or comfort care, movement in the USA is on the rise. Currently, palliative services are not integrated in an organized way throughout healthcare. If we accept the argument that palliative care is ethically desirable and that all patients are entitled to palliative services regardless of a terminal diagnosis, it follows that it needs to be integrated across a wide range of healthcare services. Ethical questions regarding palliative care and well-known ethical frameworks are discussed and an argument is made for integrating palliative healthcare services throughout the healthcare system and not simply at the end of life. Complementary and alternative medicine (CAM) therapies are discussed as useful and necessary components of palliative care. If we as a society look beyond separating cures and palliation, we will come closer to incorporating compassionate care throughout the disease process.
Randomized Controlled Trials of Pediatric Massage: A Review
Shay Beider,Christopher A. Moyer
Evidence-Based Complementary and Alternative Medicine , 2007, DOI: 10.1093/ecam/nel068
Abstract: The existing reviews of massage therapy (MT) research are either limited to infants, adults, or were conducted prior to the publication of the most recent studies using pediatric samples. Randomized controlled trials (RCTs) of pediatric MT are reviewed. A literature search yielded 24 RCTs of pediatric MT, defined as the manual manipulation of soft tissue intended to promote health and well-being in recipients between 2 and 19 years of age. Because RCTs of pediatric MT varied considerably in the amount and types of data reported, quantitative and narrative review methods were both used. Single-dose and multiple-dose effects were examined separately. Among single-dose effects, significant reductions of state anxiety were observed at the first session (g = 0.59, P < 0.05) and the last session (g = 1.10, P < 0.01) of a course of treatment. Effects for salivary cortisol (g = 0.28), negative mood (g = 0.52) and behavior (g = 0.37) were non-significant. Three of eleven multiple-dose effects were statistically significant. These were trait anxiety (g = 0.94, P < 0.05), muscle tone (g = 0.90, P < 0.01) and arthritis pain (g = 1.33, P < 0.01). Results of studies not permitting effect size calculation were judged to be generally consistent with quantitative results. MT benefits pediatric recipients, though not as universally as sometimes reported. Numerous weaknesses endemic to MT research (e.g. low statistical power, frequent failure to report basic descriptive statistics) are identified, and recommendations for future pediatric MT research are discussed.
Touch and Massage for Medically Fragile Infants
Karen Livingston,Shay Beider,Alexis J. Kant,Constance C. Gallardo,Michael H. Joseph,Jeffrey I. Gold
Evidence-Based Complementary and Alternative Medicine , 2009, DOI: 10.1093/ecam/nem076
Abstract: Research investigating the efficacy of infant massage has largely focused on premature and low birth weight infants. The majority of investigations have neglected highly acute patients in academic neonatal intensive care units (NICUs). The current study was developed with two aims: (Phase 1) to develop, implement and demonstrate the feasibility and safety of a parent-trained compassionate touch/massage program for infants with complex medical conditions and (Phase 2) to conduct a longitudinal randomized control trial (RCT) of hand containment/massage versus standard of care in a level III academic Center for Newborn and Infant Critical Care (CNICC). Certified infant massage instructors (CIMIs) taught parents to massage their hospitalized infants. Massage therapy and instruction were performed for seven consecutive days and health outcomes were collected for up to 1 month following treatment. Caregivers, nurses and certified infant massage therapists indicated moderate to high levels of satisfaction and feasibility with the implementation of hand containment/massage in a level III academic center CNICC. In addition, infant behavioral and physiological measures were within safe limits during the massage sessions. All caregivers participating in the massage group reported high levels of satisfaction 7 days into the intervention and at the 1-month follow-up with regards to their relationship with their infant, the massage program's impact on that relationship and the massage program. Due to unequal and small sample sizes, between group analyses (control versus massage) were not conducted. Descriptive infant characteristics of health outcomes are described. Preliminary data from this study indicates feasibility and safety of infant massage and satisfaction among the caregivers, CIMIs and the nurses in the CNICC. An important contribution from this study was the demonstration of the infants' safety based on physiological stability and no change in agitation/pain scores of the infants receiving massage. Massage in a tertiary urban academic NICU continues to be an area of needed study. Future studies examining infant health outcomes, such as weight gain, decreased length of hospitalization and caregiver–infant bonding, would provide greater insight into the impact of massage for medically fragile infants.
A j-Lanes Tree Hashing Mode and j-Lanes SHA-256  [PDF]
Shay Gueron
Journal of Information Security (JIS) , 2013, DOI: 10.4236/jis.2013.41002
Abstract:

j-lanes hashing is a tree mode that splits an input message to j slices, computes j independent digests of each slice, and outputs the hash value of their concatenation. We demonstrate the performance advantage of j-lanes hashing on SIMD architectures, by coding a 4-lanes-SHA-256 implementation and measuring its performance on the latest 3rd Generation IntelR CoreTM. For messages whose lengths range from 2 KB to 132 KB, we show that the 4-lanes SHA-256 is between 1.5 to 1.97 times faster than the fastest publicly available implementation that we are aware of, and between ~2 to ~2.5 times faster than the OpenSSL 1.0.1c implementation. For long messages, there is no significant performance difference between different choices of j. We show that the 4-lanes SHA-256 is faster than the two SHA3 finalists (BLAKE and Keccak) that have a published tree mode implementation. Finally, we explain why j-lanes hashing will be faster on the coming AVX2 architecture that facilitates using 256 bits registers. These results suggest that standardizing a tree mode for hash functions (SHA-256 in particular) could be useful for performance hungry applications.

Parallelized Hashing via j-Lanes and j-Pointers Tree Modes, with Applications to SHA-256  [PDF]
Shay Gueron
Journal of Information Security (JIS) , 2014, DOI: 10.4236/jis.2014.53010
Abstract:

j-lanes tree hashing is a tree mode that splits an input message into j slices, computes j independent digests of each slice, and outputs the hash value of their concatenation. j-pointers tree hashing is a similar tree mode that receives, as input, j pointers to j messages (or slices of a single message), computes their digests and outputs the hash value of their concatenation. Such modes expose parallelization opportunities in a hashing process that is otherwise serial by nature. As a result, they have a performance advantage on modern processor architectures. This paper provides precise specifications for these hashing modes, proposes appropriate IVs, and demonstrates their performance on the latest processors. Our hope is that it would be useful for standardization of these modes.

Organs-on-a-Chip: A Future of Rational Drug-Design  [PDF]
Stephen Shay
Journal of Biosciences and Medicines (JBM) , 2017, DOI: 10.4236/jbm.2017.59003
Abstract: Many recent advances in biomedical research are related to the combination of biology and microengineering. Microfluidic devices, such as organ-on-a-chip systems, integrate with living cells to allow for the detailed in vitro study of human physiology and pathophysiology. With the poor translation from animal models to human models, the organ-on-a-chip technology has become a promising substitute for animal testing, and their small scale enables precise control of culture conditions and high-throughput experiments, which would not be an economically sound model on a macroscopic level. These devices are becoming more and more common in research centers, clinics, and hospitals, and are contributing to more accurate studies and therapies, making them a staple technology for future drug design.
Simultaneous Hashing of Multiple Messages  [PDF]
Shay Gueron, Vlad Krasnov
Journal of Information Security (JIS) , 2012, DOI: 10.4236/jis.2012.34039
Abstract: We describe a method for efficiently hashing multiple messages of different lengths. Such computations occur in various scenarios, and one of them is when an operating system checks the integrity of its components during boot time. These tasks can gain performance by parallelizing the computations and using SIMD architectures. For such scenarios, we compare the performance of a new 4-buffers SHA-256 S-HASH implementation, to that of the standard serial hashing. Our results are measured on the 2nd Generation Intel? CoreTM Processor, and demonstrate SHA-256 processing at effectively ~5.2 Cycles per Byte, when hashing from any of the three cache levels, or from the system memory. This represents speedup by a factor of 3.42x compared to OpenSSL (1.0.1), and by 2.25x compared to the recent and faster n-SMS method. For hashing from a disk, we show an effective rate of ~6.73 Cycles/Byte, which is almost 3 times faster than OpenSSL (1.0.1) under the same conditions. These results indicate that for some usage models, SHA-256 is significantly faster than commonly perceived.
FORMA O DO MERCADO INFORMAL EM KINSHASA (REPUBLICA DEMOCRáTICA DO CONGO)
Mukenge Shay
Revista Tamoios , 2010,
Abstract: Trata-se deum ensaio sobre os dois circuitos da economia urbana (especificamente o mercado informal) em Kinshasa, capital da República Democrática do Congo. Este ensaio está baseado em dados e experiências da realidade desta cidade, onde buscou-se iluminar, com nova luz, um importante aspecto dos países do Terceiro Mundo: a constru o social do trabalho. O estudo dos dois circuitos da economia urbana, proposto por Milton Santos (1979), valoriza os fen menos da pobreza e do mercado informal como express es simultaneas da domina o e da luta pela sobrevivência.O trabalho apresenta uma interpreta o inovadora e polêmica das causas do predomínio do mercado informal na economia da cidade. A coloniza o e as ditaduras s o as causas do predomínio da pobreza e do mercado informal em Kinshasa, incorporando grande parte da popula o, situa o essa, agravada pelas características atuais do cenário mundial. A seguir, associa-se o conceito de circuito inferior à dinamica do mercado informal em Kinshasa.Como as atividades deste circuito interessam principalmente aos pobres na afirma o de Milton Santos, a pobreza e o mercado informal surgem, simultaneamente, como causa e efeito inegáveis. Palavras-chave: Mercado informal; pobreza; impacto da globaliza o, Kinshasa e República Democrática do Congo.
Cross-Correlation and Maximum Likelihood Analysis: A New Approach to Combine Cross-Correlation Functions
Shay Zucker
Physics , 2003, DOI: 10.1046/j.1365-8711.2003.06633.x
Abstract: This paper presents a new approach to combine cross-correlation functions. The combination is based on a maximum-likelihood approach and uses a non-linear combination scheme. It can be effective for radial-velocity analysis of multi-order spectra, or for analysis of multiple exposures of the same object. Simulations are presented to show the potential of the suggested combination scheme. The technique has already been used to detect a very faint companion of HD41004.
Detection of Periodicity Based on Serial Dependence of Phase-Folded Data
Shay Zucker
Physics , 2015, DOI: 10.1093/mnras/stv509
Abstract: We introduce and test several novel approaches for periodicity detection in unevenly-spaced sparse datasets. Specifically, we examine five different kinds of periodicity metrics, which are based on non-parametric measures of serial dependence of the phase-folded data. We test the metrics through simulations in which we assess their performance in various situations, including various periodic signal shapes, different numbers of data points and different signal to noise ratios. One of the periodicity metrics we introduce seems to perform significantly better than the classical ones in some settings of interest to astronomers. We suggest that this periodicity metric - the Hoeffding-test periodicity metric - should be used in addition to the traditional methods, to increase periodicity detection probability.
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