Electromgnetic-gravitational cross-sections in external elctromagnetic fields

The classical processes: the conversion of photons into gravitons in the static electromagnetic fields are considered by using Feynman perturbation techniques. The differential cross sections are presented for the conversion in the electric field of the flat condesor and the magnetic field of the selenoid. A numerical evaluation shows that the cross sections may have the observable value in the present technical scenario.Comment: 11 pages, LATEX, no figure

Sanatorium with Speleotherapy for Childern Ostrov u Macochy

Diplomová práce Dětská léčebna se speleoterapií Ostrov u Macochy je architektonický koncept, který spočívá ve vytvoření sanatoria s různými funkcemi pro pacienty, tak i pro veřejnost. Areál nabízí léčebnou část, ubytování pacientů, administrativní a hospodářská část, základní škola, stravování pro návštěvníky, penzion pro dospělé klienty a komplement. Stavební parcela se nachází na svažitém terénu poblíž Císařské jeskyně a je obklopeny ze tří stran lesy. Z místa stavby, směrem na jih, je krásný výhled na okolí. Okolní zástavba tvoří pouze rodinné domy. Areál sanatoria se snažil o co nejlepší interakci s okolím a s terénem a tak vznikl objekt členěný na 3 různé provozy podle třech nejdůležitějších funkcí stavebního programu.The master thesis Sanatorium with Speleotherapy for Children - Ostrov u Macochy is an architectonical concept which consist of the establishment of a sanatorium with various functions for patients and the public. The compound offers a medical block, administrative and economic blocks, a school, a cafeteria for visitors, a guests house for adult clients and complement. The building site is located on an inclined terrain near Císařské jeskyně (Caesar cave) and it is surrounded by forest from three sides. There is a scenic view to the south from the construction site. The neighboring buildings consist only of family houses. The compound of sanatorium aimed to have the closest interaction with surroundings and the terrain, therefore the estate is divided into three different segments based on the three most important functions of the construction program.

BUT Technology Transfer Centre

Předmětem vypracování bakalářské práce je novostavba Centra Transferu Technologií VUT v městské části Brno - Královo pole při ulici Kolejní v rámci kampusu VUT Pod Palackého vrchem . Areál VUT je ve svém plném rozvoji a staví se dále nové budovy. Návrh je zakomponován do GENERELU od dvojice architektů Pech a Fixel a kopíruje vymezený tvar pozemku. Výškově stavba nevyčnívá z důvodu funkce a účelu stavby, které tvoří kancelářské prostory s laboratořemi a výrobní halou.The subject of my bachelor’s thesis is a lately constructed building of BUT Technology Transfer Center in the city of Brno - Kralovo pole, in the street Kolejní within University Campus BUT Pod Palackého vrchem. University Campus BUT is in a full expansion and they are still building new buildings. Concept of Technology Transfer Center is concluded in the project Generel from architects Pech and Fixel and it copies the defined shape of parcel. Height of building does not stand out because of the function and purpose of the work. The building consists of offices, laboratories and factory hall.

Factors Affecting the Bank Credit Accessibility of Rural Households in Vietnam

The research identifies and measures factors affecting the bank credit accessibility using Heckman (1979). The research uses data from dataset of Vietnam Household Living Standard Survey (VHLSS) in 2014 and 2016 to eliminate the shock due to the global economic crisis in 2008-2009 making the estimate unsustainable. The results show that among the factors that can affect the bank credit accessibility considered in the first stage of Heckman model, there are six factors that significantly and statistically affect the bank credit accessibility of rural households. These factors include the household’s average income, householder’s age, ethnic group, marital status, previous loan period and members of the Farmers Associations. The estimate results obtained from the second stage of Heckman model on the possibility to receive loans of rural households in Vietnam indicates seven factors affecting the value of loans received from bank credit institutions are the household’s average income, householder’s age, ethnic group, marital status, previous loan period and members of the Farmers Associations

Improving Pareto Front Learning via Multi-Sample Hypernetworks

Pareto Front Learning (PFL) was recently introduced as an effective approach to obtain a mapping function from a given trade-off vector to a solution on the Pareto front, which solves the multi-objective optimization (MOO) problem. Due to the inherent trade-off between conflicting objectives, PFL offers a flexible approach in many scenarios in which the decision makers can not specify the preference of one Pareto solution over another, and must switch between them depending on the situation. However, existing PFL methods ignore the relationship between the solutions during the optimization process, which hinders the quality of the obtained front. To overcome this issue, we propose a novel PFL framework namely PHN-HVI, which employs a hypernetwork to generate multiple solutions from a set of diverse trade-off preferences and enhance the quality of the Pareto front by maximizing the Hypervolume indicator defined by these solutions. The experimental results on several MOO machine learning tasks show that the proposed framework significantly outperforms the baselines in producing the trade-off Pareto front.Comment: Accepted to AAAI-2

A Framework for Controllable Pareto Front Learning with Completed Scalarization Functions and its Applications

Pareto Front Learning (PFL) was recently introduced as an efficient method for approximating the entire Pareto front, the set of all optimal solutions to a Multi-Objective Optimization (MOO) problem. In the previous work, the mapping between a preference vector and a Pareto optimal solution is still ambiguous, rendering its results. This study demonstrates the convergence and completion aspects of solving MOO with pseudoconvex scalarization functions and combines them into Hypernetwork in order to offer a comprehensive framework for PFL, called Controllable Pareto Front Learning. Extensive experiments demonstrate that our approach is highly accurate and significantly less computationally expensive than prior methods in term of inference time.Comment: Under Review at Neural Networks Journa

SOCIAL SECURITY CONTRIBUTION INDEBTED FIRMS IN VIETNAM: CHARACTERISTICS AND MARKET VALUE

Abstract: This research is the first to empirically analyse the characteristics of firms that defer the social security contribution for their employees to the Vietnam Social Security agency, which is a chargeable offense starting 2018 as the Vietnam government focuses on ensuring worker welfare. Using data on 873 public firms headquartered in four major cities (Ha Noi, Ho Chi Minh, Da Nang, and Hai Phong), we find that non-state-owned firms and firms with lower profitability and higher debts are more likely to be in arrears on social security contribution. On the other hand, the roles of foreign ownership, size, number of employees, and number of branches/offices are insignificant. We further show that being social security contribution indebted would negatively affect shareholders’ interest as it is associated with lower firm market values.Key words: social security contribution, worker welfare, state ownership, foreign ownership, firm market valu

A High-Throughput Hardware Implementation of NAT Traversal For IPSEC VPN

In this paper, we present a high-throughput FPGA implementation of IPSec core. The core supports both NAT and non-NAT mode and can be used in high speed security gateway devices. Although IPSec ESP is very computing intensive for its cryptography process, our implementation shows that it can achieve high throughput and low lantency. The system is realized on the Zynq XC7Z045 from Xilinx and was verified and tested in practice. Results show that the design can gives a peak throughput of 5.721 Gbps for the IPSec ESP tunnel mode in NAT mode and 7.753 Gbps in non-NAT mode using one single AES encrypt core. We also compare the performance of the core when running in other mode of encryption

Multimodal Personal Verification Using Likelihood Ratio for the Match Score Fusion

In this paper, the authors present a novel personal verification system based on the likelihood ratio test for fusion of match scores from multiple biometric matchers (face, fingerprint, hand shape, and palm print). In the proposed system, multimodal features are extracted by Zernike Moment (ZM). After matching, the match scores from multiple biometric matchers are fused based on the likelihood ratio test. A finite Gaussian mixture model (GMM) is used for estimating the genuine and impostor densities of match scores for personal verification. Our approach is also compared to some different famous approaches such as the support vector machine and the sum rule with min-max. The experimental results have confirmed that the proposed system can achieve excellent identification performance for its higher level in accuracy than different famous approaches and thus can be utilized for more application related to person verification

SEGURANÇA MARÍTIMA NA REGIÃO DO INDO-PACÍFICO: UMA PERSPECTIVA GEOESTRATÉGICA DO ESTREITO DE MALACCA

Maritime security has been in recent times emerged as a burning issue in the fields of international relations in general and in the Indo-Pacific region in particular. With topographical tectonics, this area includes numerous “choke points” on maritime routes that are strategically important to world trade, playing an important role in the transportation of oil, gas and cargo products from the Middle East to Australia and East Asia. Therefore, maritime security issues for the lifeline of the world economy are concerned by the countries in the Indo-Pacific region, in which the important role of the sea route through Straits of Malacca is increasingly emphasized. With a geostrategic position connecting the Andaman Sea (Indian Ocean) and the South China Sea (Pacific Ocean), Straits of Malacca is the shortest route between the Middle East and Asia in general and Pacific Rim countries in particular. This is the location that accounts for a quarter of the world’s marine traffic annually. Energy security and trade economy of major powerful countries in the Indo-Pacific region depend heavily on the maritime security of Straits of Malacca route. Through an analysis of the Malacca Strait’s geostrategic location, this paper elucidates the Indo-Pacific region’s importance in maritime security field in the first two decades of the twenty-first century.Com uma posição geoestratégica conectando o Mar de Andaman (Oceano Índico) e o Mar da China Meridional (Oceano Pacífico), o Estreito de Malaca é a rota mais curta entre o Oriente Médio e a Ásia em geral e os países do Pacífico em particular. Este é o local que responde por um quarto do tráfego marítimo mundial anualmente. A segurança energética e a economia comercial dos principais países poderosos da região do Indo-Pacífico dependem fortemente da segurança marítima da rota do Estreito de Malaca. Através de uma análise da localização geoestratégica do Estreito de Malaca, este artigo elucida a importância da região do Indo-Pacífico no campo da segurança marítima nas duas primeiras décadas do século XXI