Similarity based smoothing in language modeling

In this paper, we improve our previously proposed Similarity Based Smoothing (SBS) algorithm. The idea of the SBS is to map words or part of sentences to an Euclidean space, and approximate the language model in that space. The bottleneck of the original algorithm was to train a regularized logistic regression model, which was incapable to deal with real world data. We replace the logistic regression by regularized maximum entropy estimation and a Gaussian mixture approach to model the language in the Euclidean space, showing other possibilities to use the main idea of SBS. We show that the regularized maximum entropy model is flexible enough to handle conditional probability density estimation, thus enable parallel computation tasks with significantly decreased iteration steps. The experimental results demonstrate the success of our method, we achieve 14% improvement on a reail world corpus

Minimálisan leválasztható rétegvastagság vizsgálata S960QL és C45E acélok ellenirányú marással történő megmunkálása során: Determination of minimum uncut chip thickness by means of conventional milling of S960QL, and C45E steels

In this day and age technological advancements aim towards making small sized, compact products. This creates requirements for higher accuracy of machining procedures, where the minimum uncut chip thickness presents itself as a problem. The following research’s aim is to determine this minimum uncut chip thickness and its dependence of the cutting speed and feed rate by means of conventional milling with everyday-use sized tools. Kivonat A korszerű termékek fejlődése a miniatürizálás irányába folytatódik, az egyre kisebb méretű alkatrészek megfelelő pontosságú forgácsolása során felvetődik a minimális rétegvastagság problémája. Ez függ a forgácsolandó anyagtól, valamint a paraméterektől. Ezen rétegvastagság értékének meghatározását tűzi ki célul jelen kutatás, valamint az előtolás és forgácsoló sebesség hatásaira igyekszik eredményeket felmutatni, hagyományos méretű, ellenirányú megmunkálással

Experimental Model for the Main Cutting Force in Face Milling of a High Strength Structural Steel

Machining and more specifically face milling are productive ways of material shaping. Predictive models are very important for effective: quick, easy-to-use and accurate process planning. There are many industrial and scientific researches about modelling the prominent process parameters of machining, notably the machining forces. The main cutting force is one of the most important indicators as it is a primary output parameter of the chip-removing process. The specific cutting force is long time used, traditional type of modelling the main cutting force but still there are missing or difficult-to-find numerical information about the effect of some of the input machining parameters such as cutting speed. In this research, the effects of the theoretical chip-section geometry and the cutting speed were examined through face milling experiments of the S960QL high strength structural steel

Examination of Free Choice of Rabbits among Different Cage-floors

Rabbits were placed in a block of cages with a floor-area of 2 m2. The animals could move freely among the cages, through swing doors. All the four cages were totally equal, they only differed in the floor (planked by OSB panel, plastic-slat, plastic-mesh or wire-mesh). 24 or 32 rabbits, weaned at 21 days of age were placed into the block. During the experiment (until 10 weeks of age) the free choice of rabbits among the cage-floors was studied weekly with the help of 24-hour video recordings. The soiled and wet (by urine) planked-floor was chosen by fewer and fewer rearing rabbits after the first week. Placing both 24 or 32 rabbits into the block, the plastic mesh floor was preferred. With the increase of age the choice of plastic-mesh, wire-mesh and plastic-slat floor became similar. The increase of both number and weight of rabbits in 1 m2 influenced the acceptance of different floors. Rearing 32 rabbits together, the choice of the 3 preferred floor types became similar at 7.5 weeks of age, while rearing 24 rabbits in a group, it became similar only at 9.5 weeks of age

Effect of Different Rearing Methods on the Weight of Rabbits

The aim of the experiment was to study the effect of the nutrient supply at foetal, suckling and growing age on the body weight of rabbits. 242 new-born rabbits were divided into three groups on the basis of their birth weight (Low = 34-45 g, Medium = 53-58 g, High = 65-70 g). One half of the litters were nursed by one doe, while the other half by two does. After weaning at 21 days of age, half of the rabbits were fed ad libitum, while the other half were fed restricted (ca. 85-90% of the ad lib.). All of the 12 groups were divided into two subgroups randomly: first artificial insemination (AI) at 15.5 or 18.5 weeks of age. All of the studied factors had significant effects on the body weight of rabbits. At four weeks of age the influence of birth weight was the highest (L: 0.51, H: 0.67 kg, P<0.05). A significant difference was found between the groups nursed by one or two does (0.52 and 0.64 kg). At nine weeks of age the effect of all factors were similar. At 15 weeks of age the following differences were found: L: 3.03, H: 3.37 kg, one or two does: 3.11 and 3.26 kg, rest. and ad lib.: 3.00 and 3.37 kg, respectively. The highest difference was found between the group of low birth weight, nursed by one doe and fed restricted (2.75 kg) and that of high birth weight, nursed by two does and fed ad libitum (3.81 kg)

Assessment of deformation in bridge bearing areas using measurements and welding simulation

Deformations of bottom flanges in the vicinity of bridge bearings, i.e., in bearing areas, due to manufacturing and loading can result in serious problems in service life and damages in bridge superstructures and structural bearings coming from nonuniform stress distribution. The paper focuses on the out-of-flatness measurement of bearing areas using Coordinate Measuring Machine (CMM) in typical steel and composite bridges having box and open cross-sections. Advanced manufacturing simulations are also carried out in addition to site measurements to analyse imperfections due to welding during assembly and strengthening of a typical bridge superstructure. A qualitative comparison is made with measurement results showing that the magnitudes of simulated and measured distortions are in good agreement. Results are evaluated in accordance with the permitted total deformation limit in EN 1337–2 recommended for spherical structural bearings. The current study uses a novel approach in the field of bridge engineering; the analogy of Abbott-Firestone curve is applied for describing the deformed shape and evaluating the extent of defects in the contact area since the magnitude of out-of-flatness imperfection is not inevitably sufficient for classifying the surfaces. Based on the obtained results it is demonstrated that using additional transverse bearing stiffeners for strengthening the superstructure can result in large distortions. Even the magnitude of out-of-flatness due to welding of transverse bearing stiffeners can exceed the permitted limit resulting in nonuniform stress distribution in the sliding elements affecting wear resistance and service life of spherical structural bearings

A mentorálás módszertani lehetőségei a leendő testnevelő tanárok képzésében

&nbsp; The Hungarian Educational System, the Higher Education also Teacher Education have been constantly changing over the past decades. According to the results of international and domestic examinations, there is an increasing need for new standards and approaches,&nbsp; in the entire Public Education, especially Teacher Education sector. The purpose of our study was to examine the key aspects of the mentoring process in physical education. We were trying to identify those special factors and identify new trends in the area of physical education. What is the role of these factors in the process of professional development of a teacher. &nbsp;A magyar oktatási rendszer nagyon sok változáson ment keresztül az utóbbi évtizedekben. Változtak a felsőoktatásban részt vevő hallgatók képzési formái, így a tanárképzés is folyamatosan módosul. A közoktatás, a tanárképzés megreformálásnak szükségességét a hazai és nemzetközi tesztek, mérésekkel alátámasztott romló tendenciája indokolja. Tanulmányunkban arra kerestük a választ, hogy a leendő testnevelő tanári képzésben a mentorálásnak milyen kulcsmozzanatai vannak. Melyek azok a tényezők, amelyek a testnevelés sajátosságaiból adódóan másféle megoldásokat kívánnak a folyamatban. Mik azok a tényezők, amelyek nehezítik a pályakezdő pedagógusok nevelő – oktató munkáját. A mentoráltat ért negatív hatások csökkentésére és a pozitív dolgok erősítésére, valamint a korai pályaelhagyás visszaszorításában sokat tehet a mentor. A mentor képes csökkenteni ezeket a hatásokat. A mentor, mint példa segíthet a pozitív énkép kialakításában