A high flux source of cold strontium atoms

We describe an experimental apparatus capable of achieving a high loading rate of strontium atoms in a magneto-optical trap operating in a high vacuum environment. A key innovation of this setup is a two dimensional magneto-optical trap deflector located after a Zeeman slower. We find a loading rate of 6x10^9/s whereas the lifetime of the magnetically trapped atoms in the 3P2 state is 54s.Comment: 12 pages, 16 figure

SEWA DB: A rich database for audio-visual emotion and sentiment research in the wild

Natural human-computer interaction and audio-visual human behaviour sensing systems, which would achieve robust performance in-the-wild are more needed than ever as digital devices are becoming indispensable part of our life more and more. Accurately annotated real-world data are the crux in devising such systems. However, existing databases usually consider controlled settings, low demographic variability, and a single task. In this paper, we introduce the SEWA database of more than 2000 minutes of audio-visual data of 398 people coming from six cultures, 50% female, and uniformly spanning the age range of 18 to 65 years old. Subjects were recorded in two different contexts: while watching adverts and while discussing adverts in a video chat. The database includes rich annotations of the recordings in terms of facial landmarks, facial action units (FAU), various vocalisations, mirroring, and continuously valued valence, arousal, liking, agreement, and prototypic examples of (dis)liking. This database aims to be an extremely valuable resource for researchers in affective computing and automatic human sensing and is expected to push forward the research in human behaviour analysis, including cultural studies. Along with the database, we provide extensive baseline experiments for automatic FAU detection and automatic valence, arousal and (dis)liking intensity estimation

Datalog-Based program analysis with BES and RWL

This paper describes two techniques for Datalog query evaluation and their application to object-oriented program analysis. The first technique transforms Datalog programs into an implicit Boolean Equation System (Bes) that can then be solved by using linear-time complexity algorithms that are available in existing, general purpose verification toolboxes such as Cadp. In order to improve scalability and to enable analyses involving advanced meta-programming features, we develop a second methodology that transforms Datalog programs into rewriting logic (Rwl) theories. This method takes advantage of the preeminent features and facilities that are available within the high-performance system Maude, which provides a very efficient implementation of Rwl. We provide evidence of the practicality of both approaches by reporting on some experiments with a number of real-world Datalog-based analyses. © 2011 Springer-Verlag.This work has been partially supported by the eu(feder), the Spanish mec/micinn under grants tin2007-68093-C02 and tin2010-21062-C02-02, and the Generalitat Valenciana under grant Emergentes gv/2009/024. M.A.Feliu was partially supported by the Spanish mec fpu grant AP2008-00608.Alpuente Frasnedo, M.; Feliú Gabaldón, MA.; Joubert, C.; Villanueva García, A. (2011). Datalog-Based program analysis with BES and RWL. En Datalog Reloaded. Springer Verlag (Germany). 6702:1-20. https://doi.org/10.1007/978-3-642-24206-9_1S1206702Afrati, F.N., Ullman, J.D.: Optimizing joins in a map-reduce environment. In: Manolescu, I., Spaccapietra, S., Teubner, J., Kitsuregawa, M., Léger, A., Naumann, F., Ailamaki, A., Özcan, F. (eds.) EDBT. ACM International Conference Proceeding Series, vol. 426, pp. 99–110. ACM, New York (2010)Alpuente, M., Feliú, M., Joubert, C., Villanueva, A.: Defining Datalog in Rewriting Logic. Technical Report DSIC-II/07/09, DSIC, Universidad Politécnica de Valencia (2009)Alpuente, M., Feliú, M., Joubert, C., Villanueva, A.: Using Datalog and Boolean Equation Systems for Program Analysis. In: Cofer, D., Fantechi, A. (eds.) FMICS 2008. LNCS, vol. 5596, pp. 215–231. Springer, Heidelberg (2009)Alpuente, M., Feliú, M.A., Joubert, C., Villanueva, A.: Defining datalog in rewriting logic. In: De Schreye, D. (ed.) LOPSTR 2009. LNCS, vol. 6037, pp. 188–204. Springer, Heidelberg (2010)Andersen, H.R.: Model checking and boolean graphs. Theoretical Computer Science 126(1), 3–30 (1994)Bancilhon, F., Maier, D., Sagiv, Y., Ullman, J.D.: Magic Sets and Other Strange Ways to Implement Logic Programs. In: Proc. 5th ACM SIGACT-SIGMOD Symp. on Principles of Database Systems, PODS 1986, pp. 1–15. ACM Press, New York (1986)Ceri, S., Gottlob, G., Tanca, L.: Logic Programming and Databases. Springer, Heidelberg (1990)Chen, T., Ploeger, B., van de Pol, J., Willemse, T.A.C.: Equivalence Checking for Infinite Systems Using Parameterized Boolean Equation Systems. In: Caires, L., Vasconcelos, V.T. (eds.) CONCUR 2007. LNCS, vol. 4703, pp. 120–135. Springer, Heidelberg (2007)Clavel, M., Durán, F., Ejer, S., Lincoln, P., Martí-Oliet, N., Meseguer, J., Talcott, C.: All About Maude - A High-Performance Logical Framework. LNCS, vol. 4350. Springer, Heidelberg (2007)Dam, A., Ploeger, B., Willemse, T.: Instantiation for Parameterised Boolean Equation Systems. In: Fitzgerald, J.S., Haxthausen, A.E., Yenigun, H. (eds.) ICTAC 2008. LNCS, vol. 5160, pp. 440–454. Springer, Heidelberg (2008)de Moor, O., Sereni, D., Verbaere, M., Hajiyev, E., Avgustinov, P., Ekman, T., Ongkingco, N., Tibble, J.: QL: Object-oriented queries made easy. In: Lämmel, R., Visser, J., Saraiva, J. (eds.) GTTSE 2008. LNCS, vol. 5235, pp. 78–133. Springer, Heidelberg (2008)Feliú, M., Joubert, C., Tarín, F.: Efficient BES-based Bottom-Up Evaluation of Datalog Programs. In: Gulías, V., Silva, J., Villanueva, A. (eds.) Proc. X Jornadas sobre Programación y Lenguajes (PROLE 2010), Garceta, pp. 165–176 (2010)Feliú, M., Joubert, C., Tarín, F.: Evaluation strategies for datalog-based points-to analysis. In: Bendisposto, J., Leuschel, M., Roggenbach, M. (eds.) Proc. 10th Workshop on Automated Verification of Critical Systems (AVoCS 2010), pp. 88–103. Technical Report of Düsseldorf University (2010)Garavel, H., Mateescu, R., Lang, F., Serwe, W.: CADP 2006: A Toolbox for the Construction and Analysis of Distributed Processes. In: Damm, W., Hermanns, H. (eds.) CAV 2007. LNCS, vol. 4590, pp. 158–163. Springer, Heidelberg (2007)Hajiyev, E., Verbaere, M., de Moor, O.: CodeQuest: Scalable Source Code Queries with Datalog. In: Hu, Q. (ed.) ECOOP 2006. LNCS, vol. 4067, pp. 2–27. Springer, Heidelberg (2006)Hanus, M.: The Integration of Functions into Logic Programming: From Theory to Practice. Journal on Logic Programming 19 & 20, 583–628 (1994)Joubert, C., Mateescu, R.: Distributed On-the-Fly Model Checking and Test Case Generation. In: Valmari, A. (ed.) SPIN 2006. LNCS, vol. 3925, pp. 126–145. Springer, Heidelberg (2006)Leeuwen, J. (ed.): Formal Models and Semantics, vol. B. Elsevier, The MIT Press (1990)Liu, X., Smolka, S.A.: Simple Linear-Time Algorithms for Minimal Fixed Points. In: Larsen, K.G., Skyum, S., Winskel, G. (eds.) ICALP 1998. LNCS, vol. 1443, pp. 53–66. Springer, Heidelberg (1998)Liu, Y.A., Stoller, S.D.: From datalog rules to efficient programs with time and space guarantees. ACM Trans. Program. Lang. Syst. 31(6) (2009)Livshits, B., Whaley, J., Lam, M.: Reflection Analysis for Java. In: Yi, K. (ed.) APLAS 2005. LNCS, vol. 3780, pp. 139–160. Springer, Heidelberg (2005)Marchiori, M.: Logic Programs as Term Rewriting Systems. In: Rodríguez-Artalejo, M., Levi, G. (eds.) ALP 1994. LNCS, vol. 850, pp. 223–241. Springer, Heidelberg (1994)Mateescu, R.: Local Model-Checking of an Alternation-Free Value-Based Modal Mu-Calculus. In: Proc. 2nd Int’l Workshop on Verication, Model Checking and Abstract Interpretation, VMCAI 1998 (1998)Mateescu, R., Thivolle, D.: A Model Checking Language for Concurrent Value-Passing Systems. In: Cuellar, J., Sere, K. (eds.) FM 2008. LNCS, vol. 5014, pp. 148–164. Springer, Heidelberg (2008)Meseguer, J.: Conditional Rewriting Logic as a Unified Model of Concurrency. Theoretical Computer Science 96(1), 73–155 (1992)Meseguer, J.: Membership algebra as a logical framework for equational specification. In: Parisi-Presicce, F. (ed.) WADT 1997. LNCS, vol. 1376, pp. 18–61. Springer, Heidelberg (1998)Reddy, U.: Transformation of Logic Programs into Functional Programs. In: Proc. Symposium on Logic Programming (SLP 1984), pp. 187–197. IEEE Computer Society Press, Los Alamitos (1984)Reps, T.W.: Solving Demand Versions of Interprocedural Analysis Problems. In: Adsul, B. (ed.) CC 1994. LNCS, vol. 786, pp. 389–403. Springer, Heidelberg (1994)Rosu, G., Havelund, K.: Rewriting-Based Techniques for Runtime Verification. Autom. Softw. Eng. 12(2), 151–197 (2005)Schneider-Kamp, P., Giesl, J., Serebrenik, A., Thiemann, R.: Automated Termination Analysis for Logic Programs by Term Rewriting. In: Puebla, G. (ed.) LOPSTR 2006. LNCS, vol. 4407, pp. 177–193. Springer, Heidelberg (2007)Ullman, J.D.: Principles of Database and Knowledge-Base Systems, Volume I and II, The New Technologies. Computer Science Press, Rockville (1989)Vieille, L.: Recursive Axioms in Deductive Databases: The Query/Subquery Approach. In: Proc. 1st Int’l Conf. on Expert Database Systems, EDS 1986, pp. 253–267 (1986)Whaley, J.: Joeq: a Virtual Machine and Compiler Infrastructure. In: Proc. Workshop on Interpreters, Virtual Machines and Emulators, IVME 2003, pp. 58–66. ACM Press, New York (2003)Whaley, J., Avots, D., Carbin, M., Lam, M.S.: Using Datalog with Binary Decision Diagrams for Program Analysis. In: Yi, K. (ed.) APLAS 2005. LNCS, vol. 3780, pp. 97–118. Springer, Heidelberg (2005)Zheng, X., Rugina, R.: Demand-driven alias analysis for C. In: Proc. 35th ACM SIGPLAN-SIGACT Symp. on Principles of Programming Languages, POPL 2008, pp. 197–208. ACM Press, New York (2008

ISSR Analysis of Variability of Cultivated Form and Varieties of Pomegranate (Punica granatum L.) from Azerbaijan

The article presents the results of a study of genetic polymorphism for the first time carried out on pomegranate varieties and forms of Azerbaijan origin using molecular markers. In total, 102 PCR fragments were identified, of which 80 were polymorphic. The high level of polymorphism (75.5%) and the rich genetic diversity were identified among the studied pomegranate collection. As a result of data analysis and on the basis of the values of the basic parameters (PIC, EMR, MI, RP, MRP) determining informativeness of markers, all 14 ISSR primers were suitable for genotyping pomegranate accessions. The most effective markers (UBC808, UBC811, UBC834, and UBC840) were identified among the set of primers tested. A dendrogram was constructed on the basis of the data obtained, which made it possible to group genotypes into 16 major clusters. The genetic similarity index ranged from 0.032 to 0.94. The study of the genetic relationship of different pomegranate varieties confirms the effectiveness of the ISSR method, which makes it possible to determine the level of genetic diversity, as well as to establish the relationship among the studied pomegranate accessions

On Solving Statistical Problems for the Stochastic Processes by the Sufficient Empirical Averaging Method

A problem of the statistical estimation of stochastic process functionals is considered. The sufficient empirical averaging method is used. The method requires the existence of the complete sufficient statistics for unknown parameters. Some examples are considered

Single-Frame Attitude Determination Methods for Nanosatellites

Single-frame methods of determining the attitude of a nanosatellite are compared in this study. The methods selected for comparison are: Single Value Decomposition (SVD), q method, Quaternion ESTimator (QUEST), Fast Optimal Attitude Matrix (FOAM) − all solving optimally the Wahba’s problem, and the algebraic method using only two vector measurements. For proper comparison, two sensors are chosen for the vector observations on-board: magnetometer and Sun sensors. Covariance results obtained as a result of using those methods have a critical importance for a non-traditional attitude estimation approach; therefore, the variance calculations are also presented. The examined methods are compared with respect to their root mean square (RMS) error and variance results. Also, some recommendations are given

Effect of autumn and winter water-charging irrigation on water status of almond

The water status of almond was monitored during the vegetational season and autumn-winter period. The effect of autumn-winter water-charging irrigation on the development of almond and its productivity was studied. The highest level of productivity has been received at use of three vegetative and two water-charging irrigation in November and December