Observations on Bog and Pollen Stratigraphy of the Des Moines Glacial Lobe, lowa

As part of an investigation into the effect of environmental changes of landscape and soils on the Des Moines lobe (Cary till), three deep bogs (Colo, Jewell, McCulloch) were examined in detail. The center profile of each has a surface peat underlain by deep, dark-colored, calcareous silts; these in turn are underlain by a second peat zone which passes into basal calcareous silts and eventually to till. Preliminary pollen data on the Colo bog shows six zones. The key zones are Zone 1 (0 to 75 inches), in which the pollen is of dominantly herbaceous genera indicating an open grassland environment, and Zones IV and V (102 to 155 to 212 inches) dominated by pollen of forest species. The changes in bog and pollen strata were probably related to a marked change from a cool climate in the early postglacial to a warmer climate in the latter part of the postglacial continuing to the present

The Quantum Speed Limit of Optimal Controlled Phasegates for Trapped Neutral Atoms

We study controlled phasegates for ultracold atoms in an optical potential. A shaped laser pulse drives transitions between the ground and electronically excited states where the atoms are subject to a long-range 1/R^3 interaction. We fully account for this interaction and use optimal control theory to calculate the pulse shapes. This allows us to determine the minimum pulse duration, respectively, gate time T that is required to obtain high fidelity. We accurately analyze the speed limiting factors, and we find the gate time to be limited either by the interaction strength in the excited state or by the ground state vibrational motion in the trap. The latter needs to be resolved by the pulses in order to fully restore the motional state of the atoms at the end of the gate.Comment: 11 pages, 10 figures, 1 tabl

Optimal Control of Superconducting N-level quantum systems

We consider a current-biased dc SQUID in the presence of an applied time-dependent bias current or magnetic flux. The phase dynamics of such a Josephson device is equivalent to that of a quantum particle trapped in a $1-$D anharmonic potential, subject to external time-dependent control fields, {\it i.e.} a driven multilevel quantum system. The problem of finding the required time-dependent control field that will steer the system from a given initial state to a desired final state at a specified final time is formulated in the framework of optimal control theory. Using the spectral filter technique, we show that the selected optimal field which induces a coherent population transfer between quantum states is represented by a carrier signal having a constant frequency but which is time-varied both in amplitude and phase. The sensitivity of the optimal solution to parameter perturbations is also addressed

Penerapan Akuntansi Biaya Bahan Baku dalam Proses Produksi pada PT. Putra Karangetang Minahasa Selatan

Manajemen Perusahaan manufaktur, dituntut untuk melaksanakan penyempurnaan aktivitas secara berkesinambungan, agar Perusahaan memiliki daya saing yang tinggi dalam jangka panjang. Hal ini mendorong pimpinan Perusahaan untuk merencanakan, mengendalikan, serta mengawasi setiap kegiatan yang dilakukan agar tujuan Perusahaan dapat tercapai. Objek penelitian ini yaitu PT. Putra Karangetang Minahasa Perusahaan yang bergerak dalam bidang industri bahan makanan berupa tepung kelapa sebagai produk utama. Tujuan penelitian ini yaitu untuk mengetahui bagaimana penerapan akuntansi biaya bahan baku dalam proses produksi telah dilakukan dengan benar. Metode analisis yang digunakan yaitu metode deskriptif analisis. Dengan metode ini, data penelitian disusun,diinterpretasikan, dideskripsikan, dan dianalisis. Penelitian ini dibandingkan dengan kebijakan yang diterapkan Perusahaan jika Perusahaan menggunakan metode Economical Order Quantity (EOQ). Alat analisis data yang digunakan untuk menganalisis data penelitian ini meliputi kuantitas pemesanan. Hasil penelitian menunjukkan bahwa Perusahaan sebaiknya meninjau kembali kebijakan persediaan bahan baku yang selama ini telah dilakukan dan Perusahaan sebaiknya menentukan besarnya persediaan bahan baku dengan menggunakan economic order quantity untuk menghindari resiko kehabisan bahan baku dan juga kelebihan bahan baku sehingga dapat meminimalisasi biaya bahan baku bagi Perusahaan. Kata kunci: akuntansi, biaya bahan bak

Research Notes : Australia : Designation of a core collection of perennial Glycine

Over the last decade, a large germplasm collection of the 12 currently recognized perennial species of Glycine has been assembled. This collection, now numbering more than 1400 accessions, is held in Canberra, Australia, and is recognized by the International Board of Plant Genetic Resources as the world base collection for perennial Glycine. The 12 species include five that have been described recently

Investigating the association between strategic and pathological gambling behaviors and substance use in youth: Could religious faith play a differential role?

Objectives: This study investigated the link between gambling behaviors and the use of alcohol, drugs, and nonprescribed prescription medications, while exploring the moderating role of distinct religious faiths. Methods:: In 2010, 570 students from the American University of Beirut completed a self-reported, anonymous English questionnaire, which included lifetime gambling and past-year substance use measures. Results: Half (55%) were lifetime gamblers, of whom, 12% were probable pathological gamblers. About 60% were strategic gamblers. Lifetime gamblers were more than twice as likely as nongamblers to report past-year illegal drug use and alcohol abuse. Probable pathological gamblers were also more than four times as likely as nongamblers to report nonmedical prescription drug use, illegal drug use, and alcohol abuse. Compared to nonstrategic gamblers, strategic gamblers had more than three times the odds of illegal drug and cigarette use. The link between alcohol abuse and gambling was stronger among Christians than Muslims. Conversely, Muslims were more likely to report the co-occurrence of various gambling behaviors (lifetime, probable pathological, and strategic gambling) with both illegal drug use and cigarette use. Conclusions: Gambling and substance use behaviors were strongly linked in this sample of youth from Lebanon, corroborating the evidence from North America. Particularly novel are the co-occurrence of pathological gambling and nonmedical prescription drug use and the potential differential role of religion

The Family Employment Awareness Training (FEAT): A Mixed-method Follow-up

This is the author's accepted manuscript. The original publication is available at http://dx.doi.org/10.3233/JVR-130652.BACKGROUND: Although competitive employment (i.e., employment in community settings among peers without disabilities for minimum wage or higher) is associated with numerous benefits for individuals with disabilities (Johannesen, McGrew, Griss, & Born, 2007), people with disabilities are underrepresented in the competitive workforce (National Disability Rights Network, 2011). OBJECTIVES: This study sought to determine the longer-term effectiveness of the Family Employment Awareness Training (FEAT) on the expectations and knowledge of participants who attended the program in 2010-2011. The study also sought to explore the perceptions of families who attended the program. METHODS: We distributed a FEAT Follow-up Survey to 220 participants to evaluate the program’s longer-term influence on participants’ expectations and knowledge and conducted 13 semi-structured interviews using a FEAT Interview Protocol to explore families’ perceptions. RESULTS: Study findings indicated that participants who attended FEAT rated their expectations as average and rated their knowledge above average one to two years after attending FEAT. An analysis of interview data indicated that families described several aspects of FEAT they liked, aspects they disliked, and suggested improvements for the program. CONCLUSIONS: Results from this study indicate that FEAT is a promising approach to improving competitive employment outcomes for individuals with disabilities

LArPix: Demonstration of low-power 3D pixelated charge readout for liquid argon time projection chambers

We report the demonstration of a low-power pixelated readout system designed for three-dimensional ionization charge detection and digital readout of liquid argon time projection chambers (LArTPCs). Unambiguous 3D charge readout was achieved using a custom-designed system-on-a-chip ASIC (LArPix) to uniquely instrument each pad in a pixelated array of charge-collection pads. The LArPix ASIC, manufactured in 180 nm bulk CMOS, provides 32 channels of charge-sensitive amplification with self-triggered digitization and multiplexed readout at temperatures from 80 K to 300 K. Using an 832-channel LArPix-based readout system with 3 mm spacing between pads, we demonstrated low-noise ($<$500 e$^-$ RMS equivalent noise charge) and very low-power ($<$100 $\mu$W/channel) ionization signal detection and readout. The readout was used to successfully measure the three-dimensional ionization distributions of cosmic rays passing through a LArTPC, free from the ambiguities of existing projective techniques. The system design relies on standard printed circuit board manufacturing techniques, enabling scalable and low-cost production of large-area readout systems using common commercial facilities. This demonstration overcomes a critical technical obstacle for operation of LArTPCs in high-occupancy environments, such as the near detector site of the Deep Underground Neutrino Experiment (DUNE).Comment: 19 pages, 10 figures, 1 ancillary animation. V3 includes minor revisions based on referee comment

Encoding a qubit into multilevel subspaces

We present a formalism for encoding the logical basis of a qubit into subspaces of multiple physical levels. The need for this multilevel encoding arises naturally in situations where the speed of quantum operations exceeds the limits imposed by the addressability of individual energy levels of the qubit physical system. A basic feature of the multilevel encoding formalism is the logical equivalence of different physical states and correspondingly, of different physical transformations. This logical equivalence is a source of a significant flexibility in designing logical operations, while the multilevel structure inherently accommodates fast and intense broadband controls thereby facilitating faster quantum operations. Another important practical advantage of multilevel encoding is the ability to maintain full quantum-computational fidelity in the presence of mixing and decoherence within encoding subspaces. The formalism is developed in detail for single-qubit operations and generalized for multiple qubits. As an illustrative example, we perform a simulation of closed-loop optimal control of single-qubit operations for a model multilevel system, and subsequently apply these operations at finite temperatures to investigate the effect of decoherence on operational fidelity.Comment: IOPart LaTeX, 2 figures, 31 pages; addition of a numerical simulatio