712 research outputs found
Nonclassical Fields and the Nonlinear Interferometer
We demonstrate several new results for the nonlinear interferometer, which
emerge from a formalism which describes in an elegant way the output field of
the nonlinear interferometer as two-mode entangled coherent states. We clarify
the relationship between squeezing and entangled coherent states, since a weak
nonlinear evolution produces a squeezed output, while a strong nonlinear
evolution produces a two-mode, two-state entangled coherent state. In between
these two extremes exist superpositions of two-mode coherent states manifesting
varying degrees of entanglement for arbitrary values of the nonlinearity. The
cardinality of the basis set of the entangled coherent states is finite when
the ratio is rational, where is the nonlinear strength. We
also show that entangled coherent states can be produced from product coherent
states via a nonlinear medium without the need for the interferometric
configuration. This provides an important experimental simplification in the
process of creating entangled coherent states.Comment: 21 pages, 2 figure
Childhood hospitalisation and related deaths in Hanoi, Vietnam: a tertiary hospital database analysis from 2007 to 2014
To describe hospital admission and emergency visit rates and potential risk factors of prolonged hospitalisation and death among children in Hanoi.; A retrospective study reviewed 212 216 hospitalisation records of children (aged 0-17) who attended the Vietnam National Children's Hospital in Hanoi between 2007 and 2014. Four indicators were analysed and reported: (1) rate of emergency hospital visits, (2) rate of hospitalisation, (3) length of hospital stay and (4) number of deaths. The risk of prolonged hospitalisation was investigated using Cox proportion hazard, and the risk of death was investigated through logistic regressions.; During 2007-2014, the average annual rate of emergency visits was 2.2 per 1000 children and the rate of hospital admissions was 13.8 per 1000 children. The annual rates for infants increased significantly by 3.9 per 1000 children during 2012-2014 for emergency visits and 25.1 per 1000 children during 2009-2014 for hospital admissions. Digestive diseases (32.0%) and injuries (30.2%) were common causes of emergency visits, whereas respiratory diseases (37.7%) and bacterial and parasitic infections (19.8%) accounted for most hospital admissions. Patients with mental and behavioural disorders remained in the hospital the longest (median=12 days). Morbidities related to the perinatal period dominated mortality causes (32.5% of deaths among those admitted to the hospital. Among the respiratory diseases, pneumonia was the leading cause of both prolonged hospitalisation and death.; Preventable health problems, such as common bacterial infections and respiratory diseases, were the primary causes of hospital admissions in Vietnam
Palm Polysaccharides in the Diet of Broilers Challenged Against Escherichia coli: A Preliminary Study
The use of palm polysaccharides in broiler diet as a feed additive has recently been reported with promising results. A study was conducted to determine the use of palm polysaccharides in broiler diets when the birds were challenged with E. coli. A total of 32 unsexed broilers, with the similar body weight (1400-1480 g) was selected and used in this study as experimental birds. The birds were kept in the individually metabolism cages for 2 weeks. Feed and and water were available at all times. The diet was formulated to meet the nutrients need for grower chickens. Four different types of feed additives (Control, palm kernel polysaccharides, copra polysaccharides, antibiotic avilamycin), with and without E. coli challenge were used in this study. The birds were challenged with E.coli for three consecutive days (days 8 to 10), after a week of adaptation period. A completely randomised factorial design was used with the first factor is feed additive (Control, palm kernel polysaccharides, copra polysaccharides, antibiotic avilamycin), the second factor is two types of E. coli challenge (with or without E. coli challenge) and four replications. Differences among treatmens found were further tested with Tukey test. The results indicated that the supplementation of feed aditives (palm kernel polysaccharides, copra polysaccharides and avilamycine) improved body weight gain, FCR and excreta dry matter. The birds challenged with E. coli produced lower body weight gain and feed intake. Interaction between type of feed additives and E. coli challenge was found in body weight gain, feed intake, FCR and excreta dry matter. In conclusion, feed additives improved the quality of the diet and E. coli challenge had detrimental effect on bird performance. There was an interaction between type of feed additives and E. coli challenge on body weight gain, feed intake, FCR and excreta dry matter
Electrophysiological correlates of high-level perception during spatial navigation
We studied the electrophysiological basis of object recognition by recording scalp\ud
electroencephalograms while participants played a virtual-reality taxi driver game.\ud
Participants searched for passengers and stores during virtual navigation in simulated\ud
towns. We compared oscillatory brain activity in response to store views that were targets or\ud
nontargets (during store search) or neutral (during passenger search). Even though store\ud
category was solely defined by task context (rather than by sensory cues), frontal ...\ud
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Identification of Reproductive Activity of Donggala Cattle at Post Puberty and Post Partum Periods
The aim of the study is to investigate condition and reproductive activity of Donggala cattles during post-puberty and post-partom periods. The study was carried out for 12 months at Donggala, Palu and Sigi Districts where major populations of Donggala cattles were kept by farmers. A total of 200 heads of Donggala cattles belonged to the local farmers were sampled. The animals were categorized as heifers when they were 10 – 18 months old and cows at 18 – 24 months old. Data colected inthis study were from structured interview and direct observation. Variables measured were body condition score, live body weight, age of puberty, age of first estrus and first mating, days open, service per conception rate, non return rate and conception rate either during post puberty or post partum. Data found in this study were describe descriptively. The results of the study indicated that the age of puberty was late as live body weight body condition score of Donggala were low. First mating of Donngala heifers was much dependant upon live body weight. Heavier cattles tended to mat earlier than the lighter cattles. Heavier catlles had better service per conception rate, non return rate and conception rate either at post puberty or post partum periods. In conclusion, the cows with high body weight had earlier first estrus, first mating and better service per conception rate, non return rate and conception rate than those cows with low live body weight. Keywords: Donggala cattle, reproductive efficiency, post puberty, post partum DOI: 10.7176/JBAH/9-6-05 Publication date:March 31st 201
Antecedents to Intention to Engage in the Online Negative Word-of-Mouth Communication
Complaints delivered directly to a firm will not be a problem if they can be handled properly, while the ones that are not disclosed directly to the firm but to a third party or even warnings to others not to use particular products or services, will be negative word-of-mouth communication. It can damage the image of the firm and be very detrimental. The purpose of this study was to analyze the antecedents of intention to engage in negative online word-of-mouth communication that includes dissatisfaction, service importance, success of complaint, complaint benefit, self confidence, altruism, retaliatory intention, and complaint cost. Medical services were selected considering the impact caused by the negligence of the service provider possibly giving rise to negative word-of-mouth communication. The online environment has been considered because of the developments in technology which provide opportunities for consumers to communicate with ach other. In addition, the dissemination of information through online media can spread incredibly widely and rapidly. The samples in this study comprised consumers of medical services who had disappointing experiences in using those services either directly or indirectly. A total of 123 questionnaires were analyzed with multiple regression analysis to test the research hypothesis. The results showed that the factors influencing the intentions behind negative online word-of-mouth communication were success of complaint, altruism, retaliatory intention, and complaint cost.
Set optimization - a rather short introduction
Recent developments in set optimization are surveyed and extended including
various set relations as well as fundamental constructions of a convex analysis
for set- and vector-valued functions, and duality for set optimization
problems. Extensive sections with bibliographical comments summarize the state
of the art. Applications to vector optimization and financial risk measures are
discussed along with algorithmic approaches to set optimization problems
Studi tentang sertifikasi hasil tangkapan ikan di Pelabuhan Perikanan Samudera Bitung (Study on Fish Catch Certification in Samudera Bitung Fishing Port)
European Union is nowadays the largest market in the world for fisheries products; it is also the strickest country in controlling the food security. It has also established requirements for marine fisheries products (fresh or processed products) exported directly or indirectly to European Union must be free of IUU Fshing. The fish catch certification follows the legal aspects and national reguaations in line with international regulations. Fish catch certification consists of Initial Sheet, Derivative Sheet, and Simplified Derivative Sheet. The objectives of the study are to know the issuance procedure of fish catch certificate in the form of preliminary document, the issuance procedure of fich catch certificate iin the form of derivative document as export supporting document, and the issuance procedure of fish catch certificate in simple form of derivative document. This study was carried out in September - November 2016 in Samudera Bitung Fisheries Port. The initial sheet is used for >20 GT-fishing vessels and proposed by the ship owner or its representative, the derivative sheet was used for the fish processing unit, and the simplified derivative sheet was export and fishing document for 20 GT, dokumen Lembar Turunan untuk unit pengolahan ikan, dan dokumen Lembar Turunan yang diserhanakan sebagai dokumen ekspor dan penangkapan ikan bagi kapal penangkap berukuran < 20 GT. Dokumen yang disebut terakhir adalah sertifikat hasil tangkapan ikan di bawah kesepakatan antara DG MARE dan pemerintah Indonesia.Kata-kata Kunci: IUU fshing, sertifikasi, lembar awal, lembar turunan, lembar turunan yang disederhanaka
Demographic factors and teachers’ effectiveness among secondary school teachers in calabar education zone cross river state, nigeria
The article aims to discuss teaching effectiveness in relation to teacher demographic factors like teachers’ age and teachers’ gender among Secondary School teachers in Calabar Education Zone of Cross River State, Nigeria. To achieve this aim, two hypotheses were stated and tested. These variables have important role to evaluate teachers’ effectiveness as scholarly proven through literatures. The descriptive survey design was adopted for use. The sample consist of one hundred and sixty-four (164) teachers and three hundred and twenty-eight (328) student from the Calabar Education Zone. Teachers’ Demographic Factors Questionnaire (TDFQ) and Teaching Effectiveness Questionnaire (TEQ) were developed by the researcher and validated by experts in Sociology of Education and Test/Measurement. The descriptive statistics, one-way analysis of variance, a post-hoc scheffe & independent t-test were used.
The result revealed that teachers’ age and gender significantly influence teaching effectiveness. Based on the findings, it is recommended among others that Government should see teachers age as an asset thereby put in more resources to train them so that they will be of benefit to the students and the society at large
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