Sigma

Conservators frequently report that the removal of surface dirt and grime from acrylic paintings can be problematic. While increasing amounts of research is being published on the analysis of acrylic paints and the historical use of acrylic paints by artists, relatively little has focused on the characterisation of the effects of surface cleaning treatments. One of the current areas of research at Tate is the evaluation of surface cleaning treatments for acrylic paintings, which includes the characterisation of the physical and optical changes to acrylic paint films after cleaning. This forms part of a broad research collaboration on modern paints involving many academic and cultural institutions, such as the National Gallery of Art where researchers are developing chromatographic and spectroscopic methods for the identification of additives in acrylic paints and the characterisation of extractable components. The Getty Conservation Institute (GCI) is continuing to develop technique...

Tujuan penulisan ini adalah untuk mendeskripsikan berbagai bentuk tugas baru guru di abad yang serba canggih dan bagaimana guru harus dapat bertransformasi mengikuti perkembangan zaman. Data diperoleh dari observasi dan dokumentasi dari sumber pustaka.Inductive analysis technique digumakam umtuk menganalisi data. Hasil analisis data menunjukkan bahwa guru bukan hanya berpearan sebagai motivator tetapi juga sebagai fasilitator yang membantu dan memfasilitasi siswa mencari informasi dari berbagai sumber yang beragam melalui tekhnologi.

the main aim of this research project is to investigate the current lean modal exist in Electronic manufacturing small and medium firm. These projects mainly identify the success factor of the lean support to the cellular manufacturing in the medium and small electronic business set. The dissertation clearly illustrated the supportive lean model to the electronic manufacturing company that support to the capacity of high variety cellular manufacturing process

Quantum gravity was born as that branch of modern theoretical physics that tries to unify its guiding principles, i.e., quantum mechanics and general relativity. Nowadays it is providing new insight into the unification of all fundamental interactions, while giving rise to new developments in modern mathematics. It is however unclear whether it will ever become a falsifiable physical theory, since it deals with Planck-scale physics. Reviewing a wide range of spectral geometry from index theory to spectral triples, we hope to dismiss the general opinion that the mere mathematical complexity of the unification programme will obstruct that programme.

The inter-rater reliability of the Japanese version of MADRS (MADRSJ) was examined using the structured interview guide for MADRS (SIGMA) developed by our group. Two or more psychiatrists attended the systematic interview sessions with each subject to evaluate MADRSJ independently, using SIGMA. A total of 18 interviews was carried out for seven patients with DSM-IV major depressive disorder. The severity of each item assessed by the raters ranged from 0 to 6 for nine items and from 0 to 4 for one item. The analysis of variance intraclass correlation coefficient inter-rater reliability values for the individual items carried out by two trained personnel ranged from 0.91 to 1.00, while those achieved by three raters ranged from 0.85 to 1.00. The present results suggest that SIGMA is a potentially useful interview guide for assessing ten symptoms of MADRSJ precisely in patients with a depressive disorder.

We formulate an approach to the geometry of Riemann-Cartan spaces provided with nonholonomic distributions defined by generic off-diagonal and nonsymmetric metrics inducing effective nonlinear and affine connections. Such geometries can be modelled by moving nonholonomic frames on (pseudo) Riemannian manifolds and describe various types of nonholonomic Einstein, Eisenhart-Moffat and Finsler-Lagrange spaces with connections compatible to a general nonsymmetric metric structure. Elaborating a metrization procedure for arbitrary distinguished connections, we define the class of distinguished linear connections which are compatible with the nonlinear connection and general nonsymmetric metric structures. The nonsymmetric gravity theory is formulated in terms of metric compatible connections. Finally, there are constructed such nonholonomic deformations of geometric structures when the Einstein and/or Lagrange-Finsler manifolds are transformed equivalently into spaces with generic local anisotropy induced by nonsymmetric metrics and generalized connections. We speculate on possible applications of such geometric methods in Einstein and generalized theories of gravity, analogous gravity and geometric mechanics.

Dolu kalıp ve Replicast CS döküm yöntemleri alüminyum, dökme demir, bronz ve çelik dökümlerin yapımında yayGIgın olarak kullanılmaktadır. Dolu kalıba döküm yönteminin en çok tercih edilen kullanımında refrakter kaplı köpük model bağlayıcı içermeyen kuma yerleştirilerek, sıkıştırılmakta bundan sonra ise döküm esnasında köpük sıvı metal ile yer değiştirmektedir. Dolu kalıba döküm yöntemindeki, karbon alma ve katmer hataları başarılı ticari uygulmalar için engel yaratabilmektedir. Alternatif yöntemeler köpük modellin dökümden önce ortadan kaldırılmasıdır. Replicast CS yönteminde, köpük modeller seramiğin çok sayıda tabakası ile kaplanırlar daha sonra köpük modellin döküm boşluğundan atılması için seramik kabuk yakılır . Seramik kabuklar bağlayıcısız kumla sıkıştırılarak desteklenir ve döküm yapılabilir. Bu çalışmada ETIAL-160 Al-Si alaşımının döküm deneyleri dolu kalıba ve Replicast CS yöntemleri kullanılarak yapılmıştır. Anahtar Sözcükler: Dolu Kalıp, Replicast CS, Etial -160 ABSTRACT Full Mold and Replicast CS casting methods have been used widely in producing aluminum, cast iron, bronze and steel castings. The most popular use of the Full Mold method places the refractory coated foam pattern in compacted unbonded sand and the the foam replaced by the liquid metal during pouring. In the full mold casting method, the carbon pickup, lap and fold defects can create an obstacle for the successful commercial applications. Therefore, other methods to allow foam patterns in casting production required. The alternative methods are the elimination of the foam pattern before pouring. In the Replicast CS method, foam patterns are covered with several layers of ceramic coating and then ceramic shell can be fired in order to eliminate the foam pattern from casting cavity. The ceramic shells are backed by compacted unbonded sand and pouring can be done. In this study, casting experiments of ETIAL 160 Al-Si alloy have been made by using Full mold and Replicast CS methods.

The thermionic vacuum arc (TVA) is a new technique for the deposition of thin metallic and nonmetallic films. TVA discharge is established in vacuum between a heated cathode (a tungsten filament) and an anode (a tungsten crucible filled with Al 2 O 3 pellets). TVA discharges in Al 2 O 3 vapors were generated and thin Al 2 O 3 films were deposited on the glass substrates using TVA. The surfaces of thin Al 2 O 3 films were examined using a Metallurgical Optical Microscope (MOM) and Scanning Electron Microscope (SEM). Al 2 O 3 thin films have been analyzed using X-ray diffraction (XRD) method. Keywords: Plasma, Thermionic vacuum arc, Al 2 O 3 thin film deposition.

Supply Chain Management (SCM) offers some business solutions to companies in various sectors by increasing customer service while minimizing costs. Supply chains for suppliers, manufacturers, distribution centers, resellers, customers or any other members differs from each other depending on their business functions, goals, types of organizations etc. Thus, the definition of supply chain varies from one company to another. But in general, SCM can be defined as a complex business relations network that contains synchronized efforts among these business entities to plan, control, coordinate and distribute raw materials, parts, subassemblies and finished goods from suppliers to ultimate customers. It can be strongly claimed that, the most important objective of SCM is to ensure production and delivery of products at the right diversity, with the right amounts, at the right time and to the right locations. In order to achieve this aim, some strategic decisions have to be made such as finding number of plants (manufacturing facilities, distribution centers, cross-docks etc.) to be opened, defining location of these plants, choosing suppliers to use (called Supplier Selection Problem), determining transportation times and modes, and creating supply chain strategies. In this study, supplier selection problem in SCM is considered with the help of Analytic Hierarchy Process. A case study in a textile manufacturer is presented.

This paper presents an experimental investigation of the machining characteristics of AISI 304 austenitic stainless steel in turning process. During experiments, parameters such as cutting speed, feed rate and depth of cut were changed to explore their effect on the surface roughness, tool flank wear and tool – chip interface temperature. Chip forms were determined. Taking into consideration the experimental results, it is found that with increasing cutting speed, tool – chip interface temperature and tool flank wear were decreased. Surface roughness got better with decreasing feed rate and depth of cut.

Pseudo dynamic testing methodology which aims to simulate earthquake behavior of structures or particular structural components subjected to dynamic loads consists of both the analytical and experimental analyses in a coupled interaction. The test specimen is idealized as a spring-mass discrete system, hydraulic actuators are positioned to the lumped mass levels, and the test specimen is deformed up to the target displacement which is extracted from the analytical calculation. The reaction forces measured from the load cells attached to the hydraulic actuators; are the terms of the stiffness matrix of the test specimen. Based on the experimentally obtained stiffness matrix and the prescribed mass and damping matrices, the dynamic equilibrium equation is generated and the displacement vector to be applied to the specimen in the next step is calculated by using a proper numerical integration technique. This process is repeated for the whole seismic event. Due to application of the loading function in a quasi-static manner, local behavior and damage propagation of the test structure could be traced. Within the context of this study, a pseudo-dynamic testing algorithm for single degree of freedom systems was developed and a computer code was produced. In order to verify the developed algorithm, a steel column was tested under different acceleration levels in the linear and non-linear regions and the test results were compared with the analytical ones.

Penelitian ini bertujuan untuk mengetahui ada tidaknya pengaruh motivasi orang tua terhadap prestasi belajar siswa pada bidang studi matematika di MTs Nahdlatun Nasyiin IV Pasanggar Pegantenan dan untuk mengetahui seberapa besar  pengaruh motivasi orang tua terhadap prestasi belajar siswa pada bidang studi matematika di MTs Nahdlatun Nasyiin IV Pasanggar Pegantenan. Penelitian ini merupakan jenis penelitian kuantitatif. Penelitian ini terdapat dua variabel yaitu variabel X (Motivasi orang tua) dan Y (prestasi belajar siswa). Populasi dalam penelitian ini yaitu semua siswa MTs Nahdlatun Nasyiin IV dimana diambil siswa kelas VIII yang berjumlah 21 siswa untuk dijadikan sampel . Teknik pengumpulan data yang digunakan adalah angket, wawancara dan dokumentasi. Teknik analisis yang digunakan adalah korelasi product moment .Berdasarkan hasil analisis data korelasi product moment diperoleh  r hitung = 0,930 sementara pada tabel  r product moment dengan N = 21 pada taraf signifikan 5% nilai ...

Penelitian ini bertujuan untuk mengidentifikasi kesalahan siswa serta faktor yang menjadi penyebab siswa melakukan kesalahan dalam menyelesaikan soal matematika pada materi trigonometri kelas X. Subjek penelitian ini adalah siswa kelas XI sebanyak 2 orang yang dipilih sesuai kriteria pada penelitian ini. Penelitian yang digunakan adalah penelitian deskriptif  kualitatif. Teknik yang digunakan untuk mengumpulkan data dalam penelitian ini adalah dengan melakukan tes dan wawancara. Dan kemudian, hasil tes dan wawancara di triangulasi dalam upaya mendapatkan data valid sehingga dapat dianalisis sebagai hasil dari penelitian ini. Adapun hasil penelitian menunjukkan bahwa jenis kesalahan dan faktor penyebab siswa dalam menyelesaikan soal matematika pada materi trigonometri di antaranya: Jenis Kesalahan meliputi kesalahan konsep, kesalahan prinsip, dan kesalahan operasi serta faktor penyebabnya yaitu dimana siswa kurang memahami soal dengan baik, kurang memahami tentang konsep yang terkait...

The purpose of this paper is to compare and discuss the similar principles in various quality management tools like Six Sigma, Lean which already exist in International Organization for Standardization (ISO) certification. With increasing competition and costs companies have been implementing various quality management systems and tools to reduce the costs and improve their markets. Many quality management tools like ISO, Lean, Six Sigma etc. have been successfully implemented by many companies. If we can dig down to the nomenclature of the various quality management approaches, it can be found that the basic quality tools, methods and approaches have been there for decades and some of the statistical tools are being implemented from centuries. By studying the process and steps in various tools like Six Sigma, lean and ISO, it can be found that the same principles are being applied in all the quality management tools but a different approach is carried out in implementing them. A study has been done to explain the similar principles followed by various quality tools.

Elliptic quantum groups can be associated to solutions of the star-triangle relation of statistical mechanics. In this paper, we consider the particular case of the E τ,η (so 3) elliptic quantum group. In the context of algebraic Bethe ansatz, we construct the corresponding Bethe creation operator for the transfer matrix defined in an arbitrary representation of E τ,η (so 3).

Genetic Algorithms are research algorithms which are based on natural selection and natural genetic mechanism. In this paper, the definition and the principle as operators of the genetic algorithms have been introduced and (crossover and mutation) have been analyzed. Various studies have been carried out for the engineering applications of genetic algorithms and information has been given about these studies. In the last part of this paper, An explanatory example related to genetic algorithms has been given.

Indirect Direct 60 65 70 75 80 85 FIG. 2. 68% CL constraint on H0 from different cosmological probes (based on Refs. [49, 50]). the local value of the H 0 from SNIa, where one does not enforce a universal color-luminosity relation to correct the near-IR Cepheid magnitudes, which gives H 0 = (71.8 ± 1.76) km s −1 Mpc −1 , or H 0 = (66.9 ± 2.5) km s −1 Mpc −1 , at 68% CL depending on the approach [123], and H 0 = (70.8 ± 2.1) km s −1 Mpc −1 at 68% CL in Ref. [124]. At the same time, the impact of known and several previously neglected or unrecognized systematic effects on the center values of the SH0ES results has been constrained to be well below the 1% level [125-129]. Interestingly, correcting reported H 0 values for such systematic effects can result in an increased value of H 0 (e.g., due to time dilation of observed variable star periods, cf. Ref. [126]), and thus, to an increased significance of the discord between the distance ladder and the early Universe-based H 0 values. An independent determination of H 0 is based on calibration of the Type Ia supernovae (SNIa) using the Tip of the Red Giant Branch, where one finds H 0 = (71.17 ± 1.66 (stat) ± 1.87 (sys)) km s −1 Mpc −1 at 68% CL [130], H 0 = (69.8 ± 0.8 (stat) ± 1.7 (sys)) km s −1 Mpc −1 at 68% CL [131], H 0 = (72.4 ± 2.0) km s −1 Mpc −1 at 68% CL [132], and the final H 0 = (69.6 ± 0.8 (stat) ± 1.7 (sys)) km s −1 Mpc −1 at 68% CL [133]. Then we have H 0 = (71.1 ± 1.9) km s −1 Mpc −1 at 68% CL [111], and the H 0 estimate using velocities and TRGB distances to 33 galaxies located between the Local Group and the Virgo cluster, H 0 = (69.5 ± 3.5 (stat) ± 2.4 (sys)) km s −1 Mpc −1 at 68% CL [134]. Moreover, it is important to mention the Freedman result H 0 = (69.8 ± 0.6 (stat) ± 1.6 (sys)) km s −1 Mpc −1 at 68% CL [135], or the re-analysis of Ref. [136] that gives H 0 = (71.5 ± 1.8) km s −1 Mpc −1 at 68% CL. Finally, there are the latest measurements H 0 = (72.4 ± 3.3) km s −1 Mpc −1 at 68% CL of Ref. [137] and H 0 = (76.94 ± 6.4) km s −1 Mpc −1 at 68% CL of Ref. [138]. A larger value for H 0 is preferred also by the analysis of the near-infrared HST WFC3 observations of the Mira variable red giant stars in NGC 1559, that gives H 0 = (73.3 ± 4.0) km s −1 Mpc −1 at 68% CL [139]. A measurement of the Hubble constant can be obtained with the Surface Brightness Fluctuations (SBF) method calibrated from Cepheids, with H 0 = (71.9 ± 7.1) km s −1 Mpc −1 at 68% CL [140] from a single galaxy (the host of GW170817) at 40 Mpc and H 0 = (70.50 ± 2.37 (stat) ± 3.38 (sys)) km s −1 Mpc −1 at 68% CL [141] from using SBF as an intermediate rung between Cepheids and SNIa. A re-analysis of the latter performed by Ref. [142], improving the LMC distance, gives instead H 0 = (71.1 ± 2.4(stat) ± 3.4(sys)) km s −1 Mpc −1 at 68% CL. Moreover, if SBF is used as another long-range indicator calibrated by Cepheids and TRGB, Ref. [142] finds H 0 = (73.3 ± 0.7 (stat) ± 2.4 (sys)) km s −1 Mpc −1 at 68% CL from a new sample of HST NIR data for 63 galaxies out to 100 Mpc. Another possible observable to constrain H 0 is given by the Standardized Type II supernovae. Using 7 SNe II with host-galaxy distances measured from Cepheid variables or the TRGB, the Hubble constant is equal to H 0 = 75.8 +5.2 −4.9 km s −1 Mpc −1 at 68% CL [143], while with 13 SNe II Ref. [144] finds H 0 = 75.4 +3.8 −3.7 km s −1 Mpc −1 at 68% CL. An important independent result was obtained with the Megamaser Cosmology Project, which gives an H 0 estimate by using the geometric distance measurements to megamaser-hosting galaxies, finding H 0 = (66.6±6.0) km s −1 Mpc −1 at 68% CL [145], and H 0 = (73.9 ± 3.0) km s −1 Mpc −1 at 68% CL [146], independent of distance ladders. In addition, there are the estimates of the Hubble constant based on the Tully-Fisher Relation, i.e. the correlation between the rotation rate of spirals and their absolute luminosity used to measure the galaxy distances. Using optical and infrared calibrated Tully-Fisher Relations, the Hubble constant is equal to H 0 = (76.0 ± 1.1 (stat) ± 2.3 (sys)) km s −1 Mpc −1 at 68% CL [147]. Considering the baryonic Tully-Fisher relation (bTFR) as a new distance indicator, instead, the Hubble constant is found to be H 0 = (75.1 ± 2.3 (stat) ± 1.5 (sys)) km s −1 Mpc −1 at 68% CL [148], and H 0 = (75.5 ± 2.5) km s −1 Mpc −1 at 68% CL [149]. An estimate of H 0 can also be obtained by modeling the extragalactic background light and its role in attenuating γ-rays, but this is challenging and the uncertainties may be underestimated. In this case there is Ref. [150] that finds H 0 = 71.8 +4.6 −5.6 (stat) +7.2 −13.8 (sys) km s −1 Mpc −1 at 68% CL, the updated value H 0 = 67.4 +6.0 −6.2 km s −1 Mpc −1 at 68% CL [151], and H 0 = 64.9 +4.6 −4.3 km s −1 Mpc −1 at 68% CL [152]. The HII galaxy measurement can also act as a good distance indicator independent of SNIa to probe the background evolution of the Universe. Using 156 HII galaxy measurements, we obtain the constraint H 0 = 76.12 +3.47 −3.44 km s −1 Mpc −1 at 68% CL [153], which is more consistent with the H 0 value from the SH0ES Team than that from the Planck collaboration (see also [154]) Moreover, we have the strong lensing time delays estimates, that are not ΛCDM model dependent but still astrophysical model dependent, because of the imperfect knowledge of the foreground and lens mass distributions. Here we have the H0LiCOW inferred values H 0 = 71.9 +2.4 −3.0 km s −1 Mpc −1 at 68% CL in 2016 [155], H 0 = 72.5 +2.1 −2.3 km s −1 Mpc −1 at 68% CL in 2018 [156], and H 0 = 73.3 +1.7 −1.8 km s −1 Mpc −1 at 68% CL in 2019 [67], 3 based on strong gravitational lensing effects on quasar systems under standard assumptions on the radial mass density profile of the lensing galaxies. A reanalysis of H0LiCOW's four lenses is performed in Ref. [162] finding H 0 = 73.65 +1.95 −2.26 km s −1 Mpc −1 at 68% CL. Under the same assumptions, the STRIDES collaboration measures from the strong lens system DES J0408-5354

We study non-Hermitian quantum mechanics in the presence of a minimal length. In particular we obtain exact solutions of a non-Hermitian displaced harmonic oscillator and the Swanson model with minimal length uncertainty. The spectrum in both the cases are found to be real. It is also shown that the models are η pseudo-Hermitian and the metric operator is found explicitly in both the cases.

We develop our method to prove quantum superintegrability of an integrable 2D system, based on recurrence relations obeyed by the eigenfunctions of the system with respect to separable coordinates. We show that the method provides rigorous proofs of superintegrability and explicit constructions of higher order generators for the symmetry algebra. We apply the method to 5 families of systems, each depending on a parameter $k$, including most notably the caged anisotropic oscillator, the Tremblay, Turbiner and Winternitz system and a deformed Kepler-Coulomb system, and we give proofs of quantum superintegrability for all rational values of $k$, new for 4 of these systems. In addition, we show that the explicit information supplied by the special function recurrence relations allows us to prove, for the first time in 4 cases, that the symmetry algebra generated by our lowest order symmetries closes and to determine the associated structure equations of the algebras for each $k$. We have no proof that our generating symmetries are of lowest possible order, but we have no counterexamples, and we are confident we can can always find any missing generators from our raising and lowering operator recurrences. We also get for free, one variable models of the action of the symmetry algebra in terms of difference operators. We describe how the St\"ackel transform acts and show that it preserves the structure equations.

The essay rereads some stylistic and structural elements of Petrolio, the great posthumous novel by Pier Paolo Pasolini. Referring to the most successful hermeneutic efforts on the text, the work emphasizes the role of contamination between media within the novel, as a key element to understand its singular form, drawing inspiration from Pasolini’s theoretical essays in Empirismo Eretico. In fact, it is precisely the field of the media and of intermediality where historically all the complex problems that Petrolio tried to address were emerging, in clear opposition with other outcomes of the contemporary postmodern literature.

Accurate, rapid and economic qualitative and quantitative analysis of trace amount substances in biological, environmental and food products is an important issue. Mostly, such substances must be taken from the matrix (separation) and concentrated (enrichment) before determining with analytical equipment. For these processes liquid-liquid, solid-liquid extraction and solid phase extraction are commonly used. However these methods are recently replaced by microexraction methods minimizing organic solvent consumption, simplifying sample preparation steps, providing high enrichment rates and appropriate to automation. Keywords: Microextraction, sample preparation, organic pollutants.

Let R be an associative ring, I a nonzero ideal of R and σ, τ two epimorphisms of R. An additive mapping F : R → R is called a generalized (σ, τ)derivation of R if there exists a (σ, τ)-derivation d : R → R such that F (xy) = F (x)σ(y) + τ (x)d(y) holds for all x, y ∈ R. The objective of the present paper is to study the following situations in prime and semiprime rings: (i) [F (x), x]σ,τ = 0, (ii) F ([x, y]) = 0, (iii) F (x • y) = 0, (iv) F ([x, y]) = [x, y]σ,τ , (v) F (x • y) = (x • y)σ,τ , (vi) F (xy) − σ(xy) ∈ Z(R), (vii) F (x)F (y) − σ(xy) ∈ Z(R) for all x, y ∈ I, when F is a generalized (σ, τ)-derivation of R.

Let h a positive integer, A a set of positive integers, with hA we denote the set of all integers representable as a sum of at most h elements of A (allowing repetitions). The Postage Stamp Problem, is to find the largest integer n = n(h,A) such that {1, . . . , n} hA.In this paper we present a new proof of the result of St¨ohr that say how to calculate n(h,A) when A has two elements. From this result we show that if h is a positive integer there exists a set A which is an extremal (, h)−basis and an extremal (, h+ 1)−basis for two stamps.In addition, we find the cases when exist a set which is an extremal (, h)−basis and an extremal (, h + 1)−basis in the case of three stamps.

The number of sleep spindles remains relatively stable within individuals from night to night. However, there is little explanation for the large interindividual differences in spindles. The authors investigated the relationship between spindles and intelligence quotient (IQ) in 3 separate studies. The number of spindles and sigma power were positively correlated with performance IQ (PIQ), but not verbal IQ (VIQ). The perceptual/analytical skills measured by the PIQ Picture Completion subscale accounted for most of the interindividual differences in spindles. Furthermore, there was a relationship between the rapid eye movements (REMs) of REM sleep and VIQ in individuals with higher IQ scores. A similar pattern was observed between spindles and PIQ. It was hypothesized that high-IQ individuals have more spindles that can support more complex cortical networks underlying perceptual/analytical abilities.

El proyecto consiste en aplicar la metodología PMI (Project Management Institute), en la gestión y control del proyecto para implementar un Sistema Integrado Financiero SIGMA que tiene por objetivo automatizar de manera ágil e integrada la información que requieren los procesos que se realizan en el área financiera de la Empresa CanalTV. CanalTV ha adquirido esta solución informática con funcionalidades estables orientadas a administrar con eficiencia la documentación que surgen en la ejecución de sus transacciones contables y de esta manera obtener con efectividad la reducción de errores en el ingreso de datos inconsistentes brindando así atención rápida a sus clientes y proveedores. Para este proyecto propuesto como tema de tesis nos hemos basado en la aplicación de PMBOK (Libro Guia de PMI) para su dirección, para conseguir principalmente una mejora en el manejo de la información contable que brindará el uso del sistema integrado implementado.

PENGGUNAAN LEMBAR AKTIVITAS SISWA PADA PEMBELAJARAN MATEMATIKA SMP DALAM MENINGKATKAN KEMANDIRIAN BELAJAR MAHASISWA Rika Sukmawati1, Yenni2,1,2Program Studi Pendidikan Matematika, Universitas Muhammadiyah TangerangEmail : rikasukma75rika@gmail.com Abstrak:Penelitian ini bertujuan untuk Mengetahui gambaran peningkatan kemandirian belajar  mahasiswa dalam penggunaan lembar aktivitas siswa (LAS) pada pembelajaran matematika Sekolah Menengah Pertama (SMP). Jenis penelitian yang dilakukan menggunakan metode penelitian kualitatif deskriptif. Subjek penelitiannya adalah mahasiswa semester 1 tahun akademik 2019/2020 Program Studi Pendidikan Matematika Fakultas Keguruan dan Ilmu Pendidikan Universitas Muhamadiyah Tangerang. Instrumen yang digunakan dalam penelitian ini menggunakan angket, lembar observasi, lembar Aktivitas Siswa dan pengamatan dokumen dengan pengolahan data menggunakan analisis persentase. Hasil penelitian menunjukkan kemandirian   mahasiswa meningkat berdasarkan indikator k...

En la parte inicial de este artículo se presenta una introducción al estudio de las curvas elípticas definidas sobre un campo K y algunas características de dichas curvas que dependen del campo sobre el cual se han definido; posteriormente se muestra que es posible definir una operación binaria entre los puntos de una curva elíptica proporcionándole a ésta estructura de grupo abeliano. En el apéndice se presentan algoritmos desarrollados en este trabajo, implementados en el sistema de álgebra computacional MuPAD.

We further develop our method to prove quantum superintegrability of an integrable 2D system, based on recurrence relations obeyed by the eigenfunctions of the system with respect to separable coordinates. We show that the method provides rigorous proofs of superintegrablity and explicit constructions of the higher order generators for the symmetry algebra. We apply the method to 5 families of systems, each depending on a parameter k. including most notably the caged anisotropic oscillator, the Tremblay, Turbiner and Winternitz system and a deformed Kepler-Coulomb system, and we give new proofs of superintegrability for all rational values of the parameter k. In addition, we show that the explicit information supplied by the special function recurrence relations allows us to prove, for the first time, that the symmetry algebra generated by the lowest order symmetries closes for all these cases and to determine the structure equations of the algebras for each k. We also get for free, one variable models of the action of the symmetry algebra in terms of difference operators. We describe how the Stäckel transform acts and show that it preserves the structure equations.

The paper presents SIGMA (Semantic Government Mash-up Application), a platform able to create mash-ups by providing access to open governmental data. The proposed solution is based on the existing semantic Web technologies (especially RDF and SPARQL) and uses public distributed endpoints conforming to the Linked Data initiative. Also, SIGMA allows creating and deployment of independent plugins, encouraging the developers to build innovative applications, visualization solutions and mash-ups that give ...

Supercritical fluid extraction of grape seed oil was performed to study the effect of various parameters such as pressure (80–120 bar), temperature (40-50°C) and modifier concentration (10-30%) on the yield and composition of oil. Experiments were performed based on experimental design in three levels. The maximum yield of the oil was obtained by adding 30% of methanol as a modifier. The fatty acid composition of grape seed oil was analyzed by GC-MS using by a standard estimation method. Unsaturated fatty acids constitute about 70% of the oil, in conformance with respective literature.

Resumen: Gracias a la vision socio-antropologica de la sordera desde la decada de los 70's, la educacion se viene preocupando por replantear sus concepciones sobre lo que es la educacion especial y quienes deben ser parte de ella. La conclusion mas interesante es que la sordera no implica deficiencia mental. Esto ha hecho que todas las areas pertenecientes a la educacion se preocupen por pensar en la integracion y posteriormente en la inclusion de personas sordas en las aulas regulares de clase. Para el caso de la educacion matematica, los replanteamientos apenas tienen efectos importantes a partir de los ultimos anos, dejando grandes tareas para los educadores matematicos del presente y el futuro. En este articulo se realiza una aproximacion teorica sobre las ideas fundamentales para tener en cuenta al tratar con comunidad sorda, segun el informe de la investigacion Aprendizaje del concepto algebraico de variable y su relacion con las representaciones semioticas en una poblacio...

Present study deals with the various principles of Lean Construction where the concepts of POKA-YOKE, Visual Management, Just-In-Time, Total Quality Management, Employee Involvement, KAIZEN, KANBAN, 6S, Last Planner System (LPS), Value Stream Mapping are discussed along with their benefits and application in real field. In Lean construction the above-mentioned concepts and ideas play major role in success of many projects.

Este caso se enfocó en una planta procesadora de queso fresco y se estableció como finalidad el mejoramiento de la calidad del producto, reducir los costos innecesarios provocados por fallas de proceso, incrementar los beneficios para la empresa y consolidar el trabajo en equipo de sus empleados. En este proyecto se presenta información de la metodología, orígenes, etapas, herramientas involucradas, información del producto y su procesamiento. Se complementa además con el desarrollo de un proyecto basado en información recopilada de la procesadora de queso empleando herramientas de Calidad y Estadística Descriptiva, las primeras para generar y organizar ideas y las otras para medir variables del proceso industrial. Durante el desarrollo del trabajo se determinó la variabilidad del proceso, se investigó las causas que la ocasionan y se gestionaron soluciones. La integración de un Programa de Mejoramiento de Calidad Seis Sigma en cualquier planta procesadora permitirá encontrar soluciones a los problemas tanto en procesos de producción como en el producto, de esta manera las empresas mejorarán su calidad y consecuentemente incrementarán sus ventas, ganancias y mercado.

In this study firstly, without ambient flow, jet flow measurements have been performed, then for different ambient flow and jet outflow velocity, jet flow measurements have been carried out. Jet flow and free air flow are parallel one another. With data obtained from measurements, velocity and turbulence distribution of flow profiles have been showed. In addition, throughout jet axis, velocity variation and diffusion ratio have been presented as graphics. Experimental studies have been implemented in low-range, suction type, subsonic wind tunnel. The length of the section is 750 mm and its inlet cross-sectional area is 320x320 mm 2 , outlet cross-sectional are is 336x336 mm 2 . Velocity and turbulence measurements have been carried out via hot wire anemometer which used for detail of gas and liquid flow areas and for investigation of velocity profiles and turbulence characteristics.

Low energy hadron phenomenology involving the (u,d,s) quarks is often approached through effective multi-quark Lagrangians with the symmetries of QCD. A very successful approach consists in taking the four-quark Nambu-Jona-Lasinio Lagrangian with the chiral U L (3) × U R (3) symmetry in the massless limit, combined with the U A (1) breaking six-quark flavour determinant interaction of 't Hooft. We review the present status and some very recent developments related to the functional integration over the cubic term in auxiliary mesonic variables that one introduces to bosonize the system. Various approaches for handling this functional, which cannot be integrated exactly, are discussed: the stationary phase approximation, the perturbative expansion, the loop expansion, their interrelation and importance for the evaluation of the effective action. The intricate group structure rules out the method of Airy's integral. The problem of the instability of the vacuum is stated and a solution given by including eight-quark interactions.

In this study, chlorine from 2-chlorophenol was removed with crude laccase enzyme produced from Trametes versicolor ATCC (200801) grown in PDB culture including wheat straw. Effects of pH value, substrate concentration, enzyme amount, contact time and temperature on dechlorination were examined. Besides, dissolved oxygen consumption was followed simultaneously dechlorination and the decrease was observed. A change in toxicity of 2-chlorophenol under determined optimum conditions was monitored through Microtox. ...

Penelitian ini merupakan penelitian deskriptif dengan menggunakan teknik the one shot case study yang bertujuan untuk mendeskripsikan aktivitas mahasiswa selama pembelajaran dan ketuntasan hasil belajar mahasiswa terhadap pembelajaran model Reciprocal Teaching. Tahap-tahap dalam Reciprocal Teaching yaitu 1) Qustioning Generating dimana mahasiswa diminta untuk membuat pertanyaan terkait materi yang sedang dibahas, 2) Clarifying mahasiswa diberi kesempatan untuk mengklarifikasi materi yang dianggap sulit yaitu dengan bertanya kepada guru, 3) Predicting mahasiswa diberi sola latihan yang memuat soal pengembangan yang harus dikerjakan secara individu, dan 4) Summarizing mahasiswa diminta untuk menyampaikan kesimpulan tentang materi yang dipelajari. pengumpulan data menggunakan metode observasi aktivitas mahasiswa dan tes. Data yang diperoleh, meliputi aktivitas mahasiswa dan ketuntasan hasil belajar mahasiswa terhadap pembelajaran Reciprocal Teaching.

The paper presents SIGMA (Semantic Government Mash-up Application), a platform able to create mash-ups by providing access to open governmental data. The proposed solution is based on the existing semantic Web technologies (especially RDF and SPARQL) and uses public distributed endpoints conforming to the Linked Data initiative. Also, SIGMA allows creating and deployment of independent plugins, encouraging the developers to build innovative applications, visualization solutions and mash-ups that give an improved access to the governmental data.

Este caso se enfocó en una planta procesadora de queso fresco y se estableció como finalidad el mejoramiento de la calidad del producto, reducir los costos innecesarios provocados por fallas de proceso, incrementar los beneficios para la empresa y consolidar el trabajo en equipo de sus empleados. En este proyecto se presenta información de la metodología, orígenes, etapas, herramientas involucradas, información del producto y su procesamiento. Se complementa además con el desarrollo de un proyecto basado en información recopilada de la procesadora de queso empleando herramientas de Calidad y Estadística Descriptiva, las primeras para generar y organizar ideas y las otras para medir variables del proceso industrial. Durante el desarrollo del trabajo se determinó la variabilidad del proceso, se investigó las causas que la ocasionan y se gestionaron soluciones. La integración de un Programa de Mejoramiento de Calidad Seis Sigma en cualquier planta procesadora permitirá encontrar soluciones a los problemas tanto en procesos de producción como en el producto, de esta manera las empresas mejorarán su calidad y consecuentemente incrementarán sus ventas, ganancias y mercado.

Abstract. The algebraic structure and the spectral properties of a special class of multicomponent NLS equations, related to the symmetric spaces of BD. I-type are analyzed. The focus of the study is on the spectral theory of the relevant Lax operators for different ...