Ipteks Om-span Pada Direktorat Jenderal Perbendaharaan Negara Sulawesi Utara

This report shows how modernization greatly influences the performance carried out, which makes work easier and faster precisely. using the online monitoring application SPAN on the performance of employees at the directorate general of the state of North Sulawesi, especially in the internal part of the company to be more efficient in monitoring stakeholders. this report is compiled descriptively and qualitative data collection. the results of which affect work, resulting in satisfactory work results in the directorate general of the state treasury of North Sulawesi

Spin Tunneling, Berry phases and Doped Antiferromagnets

Interference effects between Berry phase factors in spin tunneling systems have been discussed in recent Letters by Loss, DiVincenzo and Grinstein and von Delft and Henley. This Comment points out that Berry phases in spin tunneling are important in another interesting case: the two dimensional doped antiferromagnet. I show that the dispersion of a single hole in the t-J model changes sign as $e^{2\pi s}$ where $s$ is the size of the spins. This provides an interpretation of the numerical results for the s=\half model, and a prediction for other spin sizes.Comment: 5 pages, LaTe

Polarization transitions in interacting ring 1D arrays

Periodic nanostructures can display the dynamics of arrays of atoms while enabling the tuning of interactions in ways not normally possible in Nature. We examine one dimensional arrays of a ``synthetic atom,'' a one dimensional ring with a nearest neighbor Coulomb interaction. We consider the classical limit first, finding that the singly charged rings possess antiferroelectric order at low temperatures when the charge is discrete, but that they do not order when the charge is treated as a continuous classical fluid. In the quantum limit Monte Carlo simulation suggests that the system undergoes a quantum phase transition as the interaction strength is increased. This is supported by mapping the system to the 1D transverse field Ising model. Finally we examine the effect of magnetic fields. We find that a magnetic field can alter the electrostatic phase transition producing a ferroelectric groundstate, solely through its effect of shifting the eigenenergies of the quantum problem.Comment: 12 pages in two column format, 18 figure

Oscillating Superfluidity of Bosons in Optical Lattices

We follow up on a recent suggestion by C. Orzel et. al., Science, 291, 2386 (2001), whereby bosons in an optical lattice would be subjected to a sudden parameter change from the Mott to the superfluid phase. We analyze the Bose Hubbard model with a modified coherent states path integral which can escribe - both - phases. The saddle point theory yields collective oscillations of the uniform superfluid order parameter. These would be seen in time resolved interference patterns made by the released gas. We calculate the collective oscillation's damping rate by phason pair emission. In two dimensions the overdamped region largely overlaps with the quantum critical region. Measurements of critical dynamics on the Mott side are proposed.Comment: 4 pages 1 eps figures; Final version as appears in PRL. Added discussion on spontaneous generation of vortice

Domain Patterns in the Microwave-Induced Zero-Resistance State

It has been proposed that the microwave-induced ``zero-resistance'' phenomenon, observed in a GaAs two-dimensional electron system at low temperatures in moderate magnetic fields, results from a state with multiple domains, in which a large local electric field \bE(\br) is oriented in different directions. We explore here the questions of what may determine the domain arrangement in a given sample, what do the domains look like in representative cases, and what may be the consequences of domain-wall localization on the macroscopic dc conductance. We consider both effects of sample boundaries and effects of disorder, in a simple model, which has a constant Hall conductivity, and is characterized by a Lyapunov functional.Comment: 19 pages, 5 figures; submitted to a special issue of Journal of Statistical Physics, in honor of P. C. Hohenberg and J. S. Lange

Caractéristiques gustatives de l’eau des fruits de quatre cultivars du cocotier (Cocos nucifera L.)

Les caractéristiques gustatives (descriptives et hédoniques) de l’eau des fruits de quatre cultivars du cocotier (Cocos nucifera L.) ont été étudiées au cours de la maturation des noix. Il s’est agi du Grand OuestAfricain, du Nain Jaune de Malaisie, du Nain Vert de Guinée Equatoriale et de l’hybride PB121 amélioré. Les paramètres testés ont été les saveurs (sucrée, salée et acide) et les préférences gustatives. Les résultats obtenus ont montré des interactions significatives entre les cultivars et les stades de maturité pour les paramètres analysés. Ainsi, au cours de la maturation des noix, la saveur sucrée de l’eau de coco est prédominante quel que soit le stade de maturité. Elle est maximale chez les cultivars nains de rang 21 avec des perceptions équivalant à des teneurs en sucres de 5,80 à 6,10%. A maturité, la saveur sucrée de l’eau de coco baisse car les sucres interviennent dans la formation de l’amande. Les résultats des tests hédoniques ont abouti à la préférence de l’eau de coco en fonction de son goût sucré. Ainsi, l’eau des noix immatures des cultivars nains a été la plus appréciée. Cette étude a permis de déterminer les caractéristiques sensorielles de l’eau de coco afin de fournir des indicateurs pour une valorisation technologique efficiente.Mots clés: Eau de coco, tests sensoriels, cultivars, maturation

Generalized Elitzur's Theorem and Dimensional Reduction

We extend Elitzur's theorem to systems with symmetries intermediate between global and local. In general, our theorem formalizes the idea of {\it dimensional reduction}. We apply the results of this generalization to many systems that are of current interest. These include liquid crystalline phases of Quantum Hall systems, orbital systems, geometrically frustrated spin lattices, Bose metals, and models of superconducting arrays.Comment: 10 pages, 1 figur

KAJIAN PERANAN PENGELOLA PROYEK DALAM MENYELENGGARAKAN PROYEK PADA TAHAP PELAKSANAAN

Proyek pembangunan Mall Star Square di kota Manado membutuhkan metode kerja yang terarah dan tepat sasaran karena adanya beberapa permasalahan yang kompleks dan bervariasi sehingga peran pengelola yang baik diperlukan untuk mencapai tujuan yang diinginkan. Pelaksanaan konstruksi pekerjaan pada suatu proyek dapat berjalan sesuai dengan target waktu, biaya, kwalitas dan mutu apabila pengelolanya baik. Konsultan manajemen konstruksi harus memahami/menguasai area pekerjaan sehingga dapat melakukan pengendalian proyek, melakukan pengawasan terhadap konstruksi, dapat mengendalikan biaya, mengembangkan dan menerapkan sistem penyiapan pekerjaan, review dan pemrosesan order perubahan, mengembangkan dan menerapkan prosedur untuk review, pemrosesan pembayaran kemajuan dan akhir pelaksanaan pekerjaan bagi kontraktor, dan pengurusan mendapatkan izin dari pihak yang berwenang. Ada beberapa cara pengelolaan konstruksi pada proyek ini yang tidak berjalan sesuai dengan rencana, hal ini menyebabkan keterlambatan waktu pelaksanaan. Adapun pekerjaan tersebut antara lain: pembersihan lokasi, galian tanah lantai basement, pelaksanaan pekerjaan pondasi bored pile, Tower Crane (TC), pelaksanaan pekerjaan balok, pelaksanaan pekerjaan pengecoran. Jika pelaksanaan proyek ini berjalan lancar maka deviasi sebesar 20,280% berdasarkan penjadwalan pekerjaan dapat diminimalisasi atau bisa sesuai dengan rencana pekerjaan realisasi 100%.Kata kunci: peran pengelola, pelaksanaan, keterlambata