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71.
Brent D. Williams Matthew A. Waller Sanjay Ahire Gary D. Ferrier 《European Journal of Operational Research》2014
Despite advances in retail point-of-sale (POS) data sharing, retailers’ suppliers struggle to effectively use POS data to improve their fulfillment planning processes. The challenge lies in predicting retailer orders. We present evidence that retail echelon inventory processes translate into a long-run balance or equilibrium between orders and POS, which we refer to as the inventory balance effect, allowing for more accurate order forecasting. Based on the inventory balance effect, this research prescribes a forecasting approach which simultaneously uses both sources of information (retailer order history and POS data) to predict retailer orders to suppliers. Using data from a consumable product category, this approach is shown to outperform approaches based singularly on order or POS data, by up to 125%. The strength of this novel approach – significantly improved forecast accuracy with minimal additional analysis – make it a candidate for widespread adoption in retail supply chain collaborative planning and forecasting initiatives with corresponding impact on fulfillment performance and related operating costs. 相似文献
72.
T. Cousins T. A. Jones J. R. Brisson J. E. McFee T. J. Jamieson E. J. Waller F. J. LeMay H. Ing E. T. H. Clifford E. B. Selkirk 《Journal of Radioanalytical and Nuclear Chemistry》1998,235(1-2):53-58
In order to detect and locate buried landmines for peacekeeping, the Canadian Department of National Defence (DND), under
the Improved Landmine Detection Project, is developing a vehicle-mounted, two-phase mine detection system. The first phase
constitutes a suite of detectors used to indicate the possibility of a mine at a particular location (to ±30 cm in accuracy).
In the second phase a Thermal Neutron Activation (TNA) system is used to confirm the presence of explosives via detection
of the 10.83 MeV gamma-ray associated with nitrogen decay. The TNA system developed for this uses a 100 μg252Cf neutron source surrounded by four 3″×3″ NaI(Tl) detectors. Combining the use of state-of-the art radiation transport codes
for design, judicious choice of specialized shielding materials and development of high-rate, fast-pulse processing electronics,
has led to a system which can; (i) confirm the presence of all surface- or lightly-buried anti-tank mines in a few seconds
to a minute (depending on mass of explosive), (ii) confirm the presence of anti-tank mines down to 20 cm depth in less than
5 minutes, (iii) confirm the presence of large (>100 g nitrogen) anti-personnel mines in less than five minutes, (iv) operate
in adverse climatic conditions. These results have been verified in field trials and the system is due to be fielded in 1999. 相似文献
73.
Molecular Diversity - 相似文献
74.
Howell LA Waller ZA Bowater R O'Connell M Searcey M 《Chemical communications (Cambridge, England)》2011,47(29):8262-8264
Small molecules that induce the formation of higher order DNA structures have potential therapeutic and nanotechnology applications. Screening of a click library has identified the first compound to induce the formation of a Holliday junction structure at room temperature without the need for a high temperature annealing step. 相似文献
75.
Anion photoelectron spectra of Mo(3)O(y)(-) and W(3)O(y)(-) (y = 3-6) are reported and analyzed using density functional theory results in an attempt to determine whether electronic and structural trends in the less oxidized clusters (y = 3, 4) could elucidate the disparate chemical properties of the M(3)O(y)(-) (M = Mo, W, y = 5, 6) species. In general, cyclic structures are calculated to be more stable by at least 1 eV than extended structures, and the lowest energy structures calculated for the most reduced species favor M = O terminal bonds. While the numerous low-energy structures found for Mo(3)O(y)(-)/Mo(3)O(y) and W(3)O(y)(-)/W(3)O(y) were, in general, similar, various structures of W(3)O(y)(-)/W(3)O(y) were found to be energetically closer lying than analogous structures of Mo(3)O(y)(-)/Mo(3)O(y). Additionally, the Mo-O-Mo bridge bond was found to be a more stabilizing structural motif than the W-O-W bridge bond, with the oxygen center in the former having the highest negative charge. Based on this, the observation of trapped intermediates in reactions between Mo(3)O(y)(-) and water or CO(2) that are not observed in analogous W(3)O(y)(-) reactivity studies may be partially attributed to the role of bridge bond fluxionality. 相似文献
76.
H. Behrens P. Jaschke J. Steinhausen H. Waller 《Mathematical and Computer Modelling of Dynamical Systems: Methods, Tools and Applications in Engineering and Related Sciences》2013,19(3):223-250
First a short survey of modelling of technical systems is presented. The different methods of modelling are applied to hydrodynamic torque converters and couplings. The results of linear modelling around an operating point, of nonlinear modelling for larger operating areas and of hybrid modelling using simplified physical laws are illustrated. Simulations for large excitations show the validity of the models. The advantages and disadvantages of the different methods are discussed. 相似文献
77.
Raymond Ko Chad Shew Sharman Perera Baki Sadi Kristine Mattson Kathy Nielsen David Kelly Ed Waller Chunsheng Li 《Journal of Radioanalytical and Nuclear Chemistry》2014,300(1):147-152
Nasal swabs and facial swipes have been used to screen potential internal radioactive contamination for decades. However, the ratio between the lung intake and the activity on a swab or a swipe varies according to the nature of the contaminant involved and the exposure conditions such as particle sizes of the contaminant and the humidity in the air. This paper reports the experimental results using stable La2O3 as an analog for actinide oxides, focusing on the most important parameters such as humidity, plume velocity, and facial condition at a fixed room temperature of 23 ± 2 °C. The results showed that the effects of humidity, plume velocity, and facial condition vary more on orofacial swipe/lung deposition ratios compared to nasal swab/lung deposition ratios. The amounts on nasal swabs tended to show smaller change with respect to parameters such as plume velocity, humidity, and skin moisture. The amounts on orofacial swipes varied by a factor of 10–15 among the samples collected across all parameters. Such variability would be expected to be even greater in a real-world scenario with a larger range of physiological and environmental conditions. 相似文献
78.
79.
Chris Pickering Maria Hägglund Joanna Szmydynger-Chodobska Fernanda Marques Joana A Palha Linn Waller Adam Chodobski Robert Fredriksson Malin C Lagerström Helgi B Schiöth 《BMC neuroscience》2008,9(1):97
Background
GPR125 belongs to the family of Adhesion G protein-coupled receptors (GPCRs). A single copy of GPR125 was found in many vertebrate genomes. We also identified a Drosophila sequence, DmCG15744, which shares a common ancestor with the entire Group III of Adhesion GPCRs, and also contains Ig, LRR and HBD domains which were observed in mammalian GPR125. 相似文献80.
Ericksen's theory incorporates in the constitutive equations a vector ni that characterizes the anisotropy of a fluid particle arising from flow induced orientation. The present study is an appraisal of the potential of such an approach in studying orientable polymeric fluids. The behavior of a normalized version of ni (ni → 0 at rest and ni → 1 when fully stretched) is studied in simple shear, elongational, and converging flow fields. Following a discussion of the merits and the problems with this approach, a modification is proposed where directional anisotropy and stretching of a fluid particle are separated. Empirical extensions include the incorporation of a simple structure parameter in viscoelastic fluid theories. 相似文献