64 research outputs found
Momentum distribution of a freely expanding Lieb-Liniger gas
We numerically study free expansion of a few Lieb-Liniger bosons, which are
initially in the ground state of an infinitely deep hard-wall trap. Numerical
calculation is carried out by employing a standard Fourier transform, as
follows from the Fermi-Bose transformation for a time-dependent Lieb-Liniger
gas. We study the evolution of the momentum distribution, the real-space
single-particle density, and the occupancies of natural orbitals. Our numerical
calculation allows us to explore the behavior of these observables in the
transient regime of the expansion, where they are non-trivially affected by the
particle interactions. We derive analytically (by using the stationary phase
approximation) the formula which connects the asymptotic shape of the momentum
distribution and the initial state. For sufficiently large times the momentum
distribution coincides (up to a simple scaling transformation) with the shape
of the real-space single-particle density (the expansion is asymptotically
ballistic). Our analytical and numerical results are in good agreement.Comment: small changes; references correcte
Anderson localization of a Tonks-Girardeau gas in potentials with controlled disorder
We theoretically demonstrate features of Anderson localization in the
Tonks-Girardeau gas confined in one-dimensional (1D) potentials with controlled
disorder. That is, we investigate the evolution of the single particle density
and correlations of a Tonks-Girardeau wave packet in such disordered
potentials. The wave packet is initially trapped, the trap is suddenly turned
off, and after some time the system evolves into a localized steady state due
to Anderson localization. The density tails of the steady state decay
exponentially, while the coherence in these tails increases. The latter
phenomenon corresponds to the same effect found in incoherent optical solitons
The Comparison of Forensic-Psychiatric Traits between Female and Male Perpetrators of Murder or Attempted Murder
The aim of this investigation was to define more clearly specific forensic-psychiatric characteristics of female murder or attempted murder perpetrators. The retrospective method applied was based on the comparison of the data from forensic-psychiatric assessments carried out in the Center for Forensic Psychiatry, Psychiatric Hospital VrapÄe, Zagreb, from 1983 to 1997 (including 70 female and 70 male subjects ā who committed murder or attempted murder). Compared with men, female offenders were most often in some way emotionally related to their victims, and they were more often victimized themselves before committing the crime. In men alcoholism was a more significant circumstantial factor in the assessment of their accountability. Psychiatric security measures were more often given to male offenders. The intensity of aggression was lower in females than in males. This investigation reveals that there are some sex specific forensic-psychiatric traits of murder or attempted murder perpetrators. The obtained results could be of help in everyday forensic-psychiatric practice, both in assessments and treatment
ECONOMIC ASPECTS ON SOYBEAN PRODUCTION IN EAST CROATIA
Tijekom dvogodiÅ”njeg razdoblja (2004. i 2005. godine) obavljeno je istraživanje o visini prinosa i ekonomskoj isplativosti proizvodnje tri rane sorte soje (Dubravka 0, Marija 00 i Danica 000) razliÄitih grupa dozrijevanja. Pokusi su postavljeni po split-plot shemi na poljima Zavoda za sjemenarstvo i rasadniÄarstvo iz Osijeka, Kutjevo d.d. i PPK Nova GradiÅ”ka uz primjenu standardne agrotehnike za soju.
Jaz koji nastaje porastom broja stanovnika i istovremenim smanjenjem poljoprivrednih povrÅ”ina iz godine u godinu sve je veÄi, a soja zbog velikog postotka bjelanÄevina (od 35-50%) i ulja (od 18-24%) preuzima vodeÄe mjesto u proizvodnji i ishrani ÄovjeÄanstva. Soja zbog naknadne i postrne sjetve postaje zanimljiva poljoprivrednim proizvoÄaÄima diljem svijeta. UzimajuÄi u obzir agrotehniÄke mjere koje se koriste, uz pomoÄ tablica i grafikona dana je analiza Äimbenika i usporedba isplativosti proizvodnje pojedine sorte soje u Hrvatskoj na povrÅ”ini preko tri hektara, kako bi se odredila najpogodnija sorta za domaÄu poljoprivrednu proizvodnju.During the two vegetation years (2004 and 2005) an examination was conducted on influence of three early breeds of soybean (Dubravka 0, Marija 00 and Danica 000) belonging to different groups of ripening in terms of level of crop yield and cost effectiveness. The tests were undertaken by split-plot scheme on the crop fields originated from Institution for seed and seedlings Osijek, Kutjevo d.d. and PPK Nova GradiÅ”ka using standardized agro measures valid for soybean in The Republic of Croatia.
The difference between increase of the number of inhabitants and decrease in the crop fields area has risen significantly. Soybean, because of its high percentage of proteins (35-50%) and oil (18-24%), slightly for sure overtakes the first position in agricultural production and nutrition of mankind. Soybean is becoming more and more interesting to producers worldwide because of its rich seeding capability. Taking into account the agricultural measures used the analysis and comparison of production effectiveness between each breed of soybean in Croatian on the area more than three ha are presented in tables and graphs. In this way the best breed can be ultimately determined for domestic farm production
Concentration of nutritional important minerals in Croatian goat and cow milk and some dairy products made of these
The concentration of the minerals (Ca, Mg and P) and trace elements (Zn, Fe) were determined in goat and cowās dairy products. The aim of this work was to determine the concentrations of mentioned minerals and trace elements in fermented dairy products made of goat milk, as well as in East Croatia traditional White Slice goat cheese. Obtained results show that goat milk and dairy products from goat milk had higher concentration of Mg and Fe than these of cow milk. Goat milk and dairy products from goat milk also had higher concentration of P, whereas the concentration of Ca was equally in goat and cow milk. However, significantly lower concentrations of Zn in goat milk and goat milk products were determined. Levels of analyzed major and trace minerals were higher in fermented dairy products and cheeses than in liquid milk. The levels of major and trace minerals in White Slice cheese were greater than those in fermented milk products. High content of phosphorus in White Slice goat cheese than in White Slice cow cheese was determined
Psychiatric Patients\u27 Experiences in Complementary and Alternative Medicine (CAM), and in Religious Support ā A Pilot Study
In the Psychiatric Hospital Ā»Vrap~eĀ« an investigation on a 200 patient sample was
carried out in the year 2000. The purpose of the investigation was to analyze the examineesā
experiences of complementary and alternative medicine (CAM) and religious
support. 35.5% of the examinees had had previous experiences of CAM and religious
support. The examinees born in towns used CAM methods and religious support significantly
more often. The schizophrenic patients used CAM methods and religious support
significantly more frequently than the patients with affective and anxiety disorders.
Non-significantly more often CAM methods and religious support were utilized by
women, examinees between 21 and 30 years of age, persons who graduated from junior
college, those who live in cohabitation and patients of Islamic religion. Patients consulted
priests most often. Significantly more often patients did not pay for the CAM
treatments and religious support and non-significantly more often patients considered
CAM therapy and religious support to be successful. Non-significantly more often patients
consulted CAM practitioners and religious practitioners without being previously advised
by their relatives or friends. Relatives of the patients advised them to consult CAM
practitioners and religious practitioners significantly more often than the friends of the
patients did. Considering the possible missed benefits and harm effects of CAM treatment
as well as of the interaction between utilization of CAM methods/religious support and
conventional treatment, this problem should be given full attention. Further investigations
are required
INFLUENCE OF LOCALITY AND YEAR ON CONTENT OF OIL AND PROTEINS IN SOYBEAN SEED
Tijekom 2004. i 2005. godine obavljena su istraživanja o utjecaju lokaliteta i godine uzgoja na postotak ulja i bjelanÄevina u sjemenu. Ispitivanja su provedena na tri sorte soje - Dubravka, Marija i Danica, razliÄitih grupa dozrijevanja. Pokusi su postavljeni po split-plot shemi na tri lokacije - Zavod za sjemenarstvo i rasadniÄarstvo u Osijeku, Kutjevo d.d. i PPK Nova GradiÅ”ka. Ispitivane sorte pokazale su statistiÄki visoko opravdane razlike (P<0,01) u postotku ulja i bjelanÄevina u sjemenu soje na razliÄitim lokacijama i u razliÄitim godinama ispitivanja. Dobiveni podaci ukazuju na moguÄnost poveÄanja dobiti (veÄim postotkom ulja) u proizvodnji kroz izbor najbolje sorte za pojedinu lokaciju.During two vegetation years, 2004 and 2005, research work was conducted regarding influence of locality and year on oil and protein content in soybean seeds. Research work included soybean varieties - Dubravka, Marija and Danica. Trials were planted in split-plot design, in four replications at three different locations ā Osijek, Kutjevo and Nova GradiÅ”ka.
Results are showing statistically highly important differences (P<0,01) in seed quality for different varieties, different locations and different years. Results also pointing out possibilities for improvement of soybean production with the right choice of variety depending of location condition
Reflection of a Lieb-Liniger wave packet from the hard-wall potential
Nonequilibrium dynamics of a Lieb-Liniger system in the presence of the
hard-wall potential is studied. We demonstrate that a time-dependent wave
function, which describes quantum dynamics of a Lieb-Liniger wave packet
comprised of N particles, can be found by solving an -dimensional Fourier
transform; this follows from the symmetry properties of the many-body
eigenstates in the presence of the hard-wall potential. The presented formalism
is employed to numerically calculate reflection of a few-body wave packet from
the hard wall for various interaction strengths and incident momenta.Comment: revised version, improved notation, Fig. 5 adde
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