cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Measuring the Speed of Gravitational Waves from the First and Second Observing Run of Advanced LIGO and Advanced Virgo
Creators: name: Liu, Xiaoshu
name: He, Vincent F.
name: Mikulski, Timothy M.
name: Palenova, Daria
name: Williams, Claire E.
name: Creighton, Jolien
name: Tasson, Jay D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The speed of gravitational waves for a single observation can be measured by the time delay among gravitational-wave detectors with Bayesian inference. Then multiple measurements can be combined to produce a more accurate result. From the near simultaneous detection of gravitational waves and gamma rays originating from GW170817/GRB 170817A, the speed of gravitational wave signal was found to be the same as the the speed of the gamma rays to approximately one part in $10^{15}$. Here we present a different method of measuring the speed of gravitational waves, not based on an associated electromagnetic signal but instead by the measured transit time across a geographically separated network of detectors. While this method is far less precise, it provides an independent measurement of the speed of gravitational waves. For GW170817 a binary neutron star inspiral observed by Advanced LIGO and Advanced Virgo, by fixing sky localization of the source at the electromagnetic counterpart the speed of gravitational waves is constrained to 90% confidence interval (0.97c, 1.02c), where c is the speed of light in a vacuum. By combing seven BBH events and the BNS event from the second observing run of Advanced LIGO and Advanced Virgo, the 90% confidence interval is narrowed down to (0.97c, 1.01c). The accurate measurement of the speed of gravitational waves allows us to test the general theory of relativity. We further interpret these results within the test framework provided by the gravitational Standard-Model Extension (SME). In doing so, we obtain simultaneous constraints on 4 of the 9 nonbirefringent, nondispersive coefficients for Lorentz violation in the gravity sector of the SME and place limits on the anisotropy of the speed of gravity.
description: 8 pages, 6 figures
Large Hierarchies from Attractor Vacua
Creators: name: Dvali, Gia
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss a mechanism through which the multi-vacua theories, such as String Theory, could solve the Hierarchy Problem, without any UV-regulating physics at low energies. Because of symmetry the number density of vacua with a certain hierarchically-small Higgs mass diverges, and is an attractor on the vacuum landscape.The hierarchy problem is solved in two steps. It is first promoted into a problem of the super-selection rule among the infinite number of vacua (analogous to theta-vacua in QCD), that are finely scanned by the Higgs mass. This rule is lifted by heavy branes, which effectively convert the Higgs mass into a dynamical variable. The key point is that a discrete "brane-charge-conjugation" symmetry guarantees that the fineness of the vacuum-scanning is set by the Higgs mass itself. On a resulting landscape in all, but a measure-zero set of vacua the Higgs mass has a common hierarchically-small value. In minimal models this value is controlled by the QCD scale and is of the right magnitude. Although in each particular vacuum there is no visible UV-regulating low energy physics, the realistic models are predictive. For example, we show that in the minimal case the "charge conjugation" symmetry is automatically a family symmetry, and imposes severe restrictions on quark Yukawa matrices.
description: 33 pages, Latex
A terrorizmus hatása a nemzetközi idegenforgalomra
Creators: name: Varga, Henriett
name: Bagdi, Róbert
name: Varga, Henriett
name: Bagdi, Róbert
Publisher: name: Unknown
Year: 2011
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: Political Economy
subject: terrorizmus
subject: hatás
subject: nemzetközi
subject: idegenforgalom
subject: szokás
subject: terrorism
subject: effect
subject: international
subject: tourism
subject: habit

description: A terrorizmus problémája napjainkban már-már a globális felmelegedéssel egyenértékűnek mondható, mert minden területen, így az idegenforgalomban is megjelenik hatása. Abban azonban megoszlanak a vélemények, hogy ez a hatás milyen szintű, illetve, hogy kizárólag negatív, vagy vannak esetleg pozitív aspektusai is. Munkánkban a terrorakciók turizmusra gyakorolt hatását vizsgáljuk, elemezve az egyes idegenforgalmi kínálatot alkotó elemek és a merényletek közötti összefüggéseket. Kitérünk rá, hogy a közlekedés, szálláshelyek és rendezvények ellen elkövetett támadások milyen következménnyel járnak a desztinációk látogatóforgalmának alakulására, s hogy hogyan befolyásolják az utazási szokásokat. Végül, bár abszurdnak tűnik, foglalkozunk a terrorizmus pozitív hatásaival is. ---------------------------------------------------- Nowadays, the issue of terrorism is almost as significant as global warming, because its effects appear in every field, so do in tourism. However, there are different opinions about the extent of its impacts and if these are all negative or there are positive ones, as well. In our investigation, the effects of terrorism-related activities on tourism are examined, comparing the connections between the variety of tourist attractions and the attacks. We discuss the consequences of attacks against transport systems, accommodations and public events as far as the number of visitors and their travel habits are concerned. It may seem to be absurd, but we deal with some positive effects of terrorism.
Investigating the Use of Traveltime and Reflection Tomography for Deep Learning-Based Sound-Speed Estimation in Ultrasound Computed Tomography
Creators: name: Jeong, Gangwon
name: Li, Fu
name: Mitcham, Trevor M.
name: Villa, Umberto
name: Duric, Nebojsa
name: Anastasio, Mark A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Ultrasound computed tomography (USCT) quantifies acoustic tissue properties such as the speed-of-sound (SOS). Although full-waveform inversion (FWI) is an effective method for accurate SOS reconstruction, it can be computationally challenging for large-scale problems. Deep learning-based image-to-image learned reconstruction (IILR) methods can offer computationally efficient alternatives. This study investigates the impact of the chosen input modalities on IILR methods for high-resolution SOS reconstruction in USCT. The selected modalities are traveltime tomography (TT) and reflection tomography (RT), which produce a low-resolution SOS map and a reflectivity map, respectively. These modalities have been chosen for their lower computational cost relative to FWI and their capacity to provide complementary information: TT offers a direct SOS measure, while RT reveals tissue boundary information. Systematic analyses were facilitated by employing a virtual USCT imaging system with anatomically realistic numerical breast phantoms. Within this testbed, a supervised convolutional neural network (CNN) was trained to map dual-channel (TT and RT images) to a high-resolution SOS map. Single-input CNNs were trained separately using inputs from each modality alone (TT or RT) for comparison. The accuracy of the methods was systematically assessed using normalized root mean squared error (NRMSE), structural similarity index measure (SSIM), and peak signal-to-noise ratio (PSNR). For tumor detection performance, receiver operating characteristic analysis was employed. The dual-channel IILR method was also tested on clinical human breast data. Ensemble average of the NRMSE, SSIM, and PSNR evaluated on this clinical dataset were 0.2355, 0.8845, and 28.33 dB, respectively.
description: Associated SPIE proceeding: Jeong, Gangwon, et al. "A deep-learning-based image reconstruction method for USCT that employs multimodality inputs." Medical Imaging 2023: Ultrasonic Imaging and Tomography. Vol. 12470. SPIE, 2023
A DÉL–ALFÖLDI RÉGIÓ ZÖLDSÉG-ÖNELLÁTÁSÁNAK LOGISZTIKAI KÉRDÉSEI
Creators: name: Agárdi, Éva
name: Szabó, Anett Krisztina
name: Tégla, Zsolt
name: Agárdi, Éva
name: Szabó, Anett Krisztina
name: Tégla, Zsolt
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: Farm Management
subject: Production Economics
subject: zöldséghajtatás
subject: kisgazdaságok
subject: önellátás
subject: logisztikai súlypont
subject: vegetable forcing
subject: logistics focus
subject: backyard farms
subject: self-sufficiency

description: Az emberi lét egyik nélkülözhetetlen eleme a táplálkozás, melyet nap mint nap biztosítanunk kell, mely a XXI. század egyik legégetőbb problémája. Kutatásunk témája a helyi zöldségellátás a Dél-alföldi régióban. Tény, hogy a Dél-alföldi régió egyedülálló adottságokkal rendelkezik ökológiai, társadalmi berendezkedés és szociális háttere miatt. Magyarország zöldségtermesztési potenciáljának egyik meghatározó eleme. Felmerül a kérdés, miért nem hazai termesztésű zöldségekkel találkozunk a piacok, boltok polcain? Megoldható-e a régión belül a helyi szükségletek kielégítése? A cikkben bemutatásra kerül egy olyan ellátási lánc, mely alulról szerveződik (tagjai a kisgazdaságok) azonban erejüket közös szervezetben egyesítik. A stratégiai fontosságú zöldségek egy közel 300 mintás primer kutatás során ABC analízissel lett meghatározva. A szükséges termesztési területek tradicionális, ökológiai illetve rendelkezésre álló technológia alapján felosztásra kerültek. Az egyes területek zöldségpotenciáljai alapján meghatározásra kerültek a lokális, megyei logisztikai súlypontok. ----------------------------------------------- An indispensisble element of human life is nourishment, which we must provide day by day, and which is one of the most vital problems of the 21st century. The topic of our research is local vegetable supply in the region of the Great Plain. It is a fact that the region of the Great Plain has unique aptitudes because of its ecological and social position and background. In Hungary, one of the biggest potentials is in vegetable production. The question arises: why don’t we see locally grown vegetables on the markets and shelves of supermarkets? Is it possible to satisfy the local needs withing the region? We have written up a Logistics focus in our essay which has a bottom-up structure (the members are market garden farms) but they unite their power in a common organisation. We have defined the strategically important vegetables with ABC analysis based on a primary research of a pattern of 300. We have mapped out the producing areas which have long traditions in growing certain types of vegetables. We have defined the logistic focus areas in the region of the Great Plain which are in line with the potentials of vegetable production, and created an efficient, logistics focus. We have shared the agricultural land between the 7 vegetables, we take tradicional, ecological, technological criterions into account.
A.K.S.D. DEBRECEN HULLADÉKLERAKÓ TELEP CSURGALÉKVÍZ RENDSZERÉNEK VÍZFORGALMI VIZSGÁLATA
Creators: name: Dávid, Tamás
name: Bíró, Tibor
name: Barna, Sándor
name: Dávid, Tamás
name: Bíró, Tibor
name: Barna, Sándor
Publisher: name: Unknown
Year: 2012
Subjects: subject: Environmental Economics and Policy
subject: Research and Development/Tech Change/Emerging Technologies
subject: hulladéklerakó
subject: csurgalékvíz
subject: vízháztartási egyenlet
subject: landfill
subject: leachate
subject: water balance equation

description: A Magyarországon üzemelő regionális lerakók mindegyike egy új típusú problémával találta szembe magát, a depóniára hullott és azon átszivárgott csapadék jelentős mennyiségekben jelenik meg, melynek kezeléséről és elhelyezéséről gondoskodni kell. A depóniában lejátszódó kémiai folyamatok csak nehezen modellezhetők, valamint a lerakókra hulló csapadékok sorsa is csak bonyolult összefüggések vizsgálatával követhető nyomon. Mérési adatokkal sajnos nem rendelkezünk a magyarországi klimatikus viszonyok mellett keletkező csurgalékvíz mennyiségekről. Vizsgálataink egy olyan vízháztartási egyenlet kidolgozására irányultak, amely figyelembe veszi az anyagmegmaradás törvényeit, ezáltal a belépő, a kilépő, valamint a tározott víz egyensúlyát. Ezzel a lerakó vízháztartási folyamatok jól jellemezhetők. A vizsgálataink megállapították, hogy a területre hullott és beszivárgó csapadékmennyiségnek 57%-ából képződhet csurgalékvíz. ------------------------------------------------------- Each established regional landfills faced with a new type of problems in Hungary: the percolated rainfall to the waste mass – without the possibility of infiltration processes – appears in significant quantities. At the same time the treatment and placement of big amount of leachate must be provided. Chemical processes of the landfills can be modeled hardly, and the way of the rainfall can be followed up by difficult relationships. We do not have measurement data about quantity of landfill leachate under Hungarian climatic conditions. Our examinations established an equation which can be characterized the water balance of landfills. The result of our examinations that 57% of percolated rainwater becomes leachate.
Higher Powers: Alcohol and After in Uganda’s Capital City
Creators: name: Boyd, Lydia
Publisher: name: Taylor & Francis
Year: 2024

description: Higher Powers provides a close ethnographic reading of how people navigate treatment for alcohol addiction
in a major African city: Kampala, Uganda. Significantly, the authors have chosen to examine multiple
modes of treatment that co-exist in Kampala: clinical/biomedical, spiritualist (both Christian and
indigenous healers), and herbalist.
On the efficiency of exchange in parallel tempering Monte Carlo simulations
Creators: name: Predescu, Cristian
name: Predescu, Mihaela
name: Ciobanu, Cristian V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: If accepted, the paper will be available at http://pubs.acs.org/journals/jpcbfh/
description: this paper is withdrawn due to copyright issues; submitted to J. Phys. Chem. B
Compression-based inference of network motif sets
Creators: name: Bénichou, Alexis
name: Masson, Jean-Baptiste
name: Vestergaard, Christian L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Physical and functional constraints on biological networks lead to complex topological patterns across multiple scales in their organization. A particular type of higher-order network feature that has received considerable interest is network motifs, defined as statistically regular subgraphs. These may implement fundamental logical and computational circuits and are referred as "building blocks of complex networks". Their well-defined structures and small sizes also enables the testing of their functions in synthetic and natural biological experiments. The statistical inference of network motifs is however fraught with difficulties, from defining and sampling the right null model to accounting for the large number of possible motifs and their potential correlations in statistical testing. Here we develop a framework for motif mining based on lossless network compression using subgraph contractions. The minimum description length principle allows us to select the most significant set of motifs as well as other prominent network features in terms of their combined compression of the network. The approach inherently accounts for multiple testing and correlations between subgraphs and does not rely on a priori specification of an appropriate null model. This provides an alternative definition of motif significance which guarantees more robust statistical inference. Our approach overcomes the common problems in classic testing-based motif analysis. We apply our methodology to perform comparative connectomics by evaluating the compressibility and the circuit motifs of a range of synaptic-resolution neural connectomes.
description: Published in PLoS Computational Biology: Methods
A TELJESÍTMÉNYMÉRÉS KÉRDÉSEI A KÖLTSÉGVETÉSI INTÉZMÉNYEKBEN
Creators: name: Fodor, Gizella
name: Takács, István
name: Fodor, Gizella
name: Takács, István
Publisher: name: Unknown
Year: 2012
Subjects: subject: Public Economics
subject: közoktatás
subject: összehasonlító elemzés
subject: közjavak
subject: hatékonyság
subject: modell
subject: public education
subject: comparative analysis
subject: public goods
subject: efficiency
subject: model

description: A teljesítmény mérése, értékelése, s még inkább a teljesítményt befolyásoló tényezők feltárása kulcsfontosságú úgy az üzleti vállalkozások, mint a nem profitorientált szervezeteknél is. A mérési módszereket neves közgazdászok, üzleti szakemberek igyekeznek tökéletesíteni. A non-profit szervezetek szembeni elvárások teljesítésének mérése jellemzően a költségek, a gazdálkodás elemzésével történik, de nyilvánvalóan ez nem elegendő. Igaz ez a költségvetési szervként működő közoktatási intézményekre is, amelyek közfeladatot látnak el közpénzek felhasználásával. A cikk célja, hogy egy konkrét non-profit szervezet vizsgálatával bemutassa az eredményesség mérés kulcskérdéseit, továbbá ismertesse azt a modellt, amely célja a közoktatási intézmények teljesítményének összehasonlítása. Ez a modell az eddig alkalmazott modellek kritikai értékelése révén szerzett tapasztalatok felhasználásával, az azokban feltárt hiányosságok kiküszöbölésére tesz kísérletet. -------------------------------------------------------------- Measurement and evaluation of performance, furthermore exploring the factors influencing performance play a key role for business as well as for non-profit organizations. Renowned economists as well as business professionals seek to improve the measurement methods. Measuring the fulfillment of the expectations against the non-profit organizations is typically evaluated by analyzing the costs and the management however this is obviously not enough. This is true for the public education as budgetary financed public institutions, having a public-service mission and using public funds. The goal of the paper is to show the key issues of the effectiveness measurement by the analysis of a specific nonprofit institution and describe a model which is designed to compare the performance of different public education institutions. Based on the critical evaluation of the experiences of the models used so far the presented model attempts to correct those deficiencies.
Pushing the Boundaries of the Cl 1604 Supercluster at z~0.9
Creators: name: Gal, R. R.
name: Lubin, L. M.
name: Squires, G. K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Cl 1604 supercluster at z~0.9 is known to contain at least four distinct member clusters, separated in both projection and redshift. In this paper we present deep, multicolor wide-field imaging of a region spanning ~45' on a side, corresponding to 21 h^{-1}_{70} Mpc (physical) at the supercluster redshift. We select galaxies whose colors correspond to those of spectroscopically confirmed cluster members in the r' vs. (r'-i') color-magnitude diagram. Using an adaptive kernel, we generate a map of the projected red galaxy density and identify numerous new candidate clusters which are likely supercluster members. Assuming that all of the density peaks are associated with the supercluster, its transverse size is ~10 h^{-1}_{70} Mpc, which is still significantly smaller than the nearly 93 h^{-1}_{70} Mpc depth in redshift space.
description: 5 pages, 5 figures. Accepted for publication in AJ. Figures and text updated with corrections
Ouverture commerciale, croissance économique et environnement au Mali
Creators: name: COULIBALY, Siriki
name: CISSOKO, Alassane
Publisher: name: Zenodo
Year: 2024
Subjects: commerce international, croissance économique, environnement, Mali.

description: L’objectif de cette étude est de déterminer l’impact de l’ouverture commerciale sur la pollution au Mali. Pour cela, nous avons utilisé la méthode ARDL (Auto Regressive Distributed Lag) pour tester la cointégration entres nos variables. Les variables d’intérêt sont l’ouverture commerciale, le Produit Intérieur Brut (PIB) par tête et les émissions de CO2 par tête. La consommation d’énergie, le taux de croissance de la population et le PIB industriel sont introduit des variables de contrôle notamment. L’analyse couvre la période 1990-2022. Nous avons trouvé que le commerce international à court et long terme a un effet positif les émissions de CO2 par tête au Mali.
Analysis of Compression Techniques for DNA Sequence Data
Creators: name: Bibi, Shakeela
name: Iftekhar, Adnan
name: Iqbal, Javed
name: Mirnejad, Hassan
Publisher: name: figshare
Year: 2020
Subjects: subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences

description: Biological data mainly comprises of Deoxyribonucleic acid(DNA) and protein sequences. These are the biomolecules which are present in all cells of human beings. Due to the self-replicating property of DNA, it is a key constitute of genetic material that exist in all breathing creatures. This biomolecule (DNA) comprehends the genetic material obligatory for the operational and expansion of allpersonified lives. To save DNA data of single person we require 10CD-ROMs. Moreover, this size is increasing constantly, and more and more sequences are adding in the public databases. This abundant increase in the sequence data arise challenges in the precise information extraction from this data. Since many data analyzing and visualization tools do not support processing of this huge amount ofdata. To reduce the size of DNA and protein sequence, many scientists introduced various types of sequence compression algorithms such as compress or gzip, Context Tree Weighting (CTW), Lampel ziv Welch (LZW), arithmetic coding, run length encoding and substitution method etc. These techniques have sufficiently contributed to minimizethe volume of the biological datasets. On the other hand, thetraditional compression techniques are also not much suitable for the compression of these types of sequential data. In this paper, we have explored diverse types of techniques for compression of large amount of DNA Sequence data. In this paper, the analysis of techniques reveals that efficient techniques not only reduce the size of the sequence but also avoid from any information loss. The review of existing studies also shows that compression of DNA sequence is significant for understanding the critical characteristics of DNA data in addition to improving storage efficiency and data transmission. In addition, the compression of protein sequence is a challenge for the research community. The major parameters for evaluation of these compression algorithms includes compression ratio, running time complexity etc.
Constraints on the CKM angle alpha in the B --> rho rho decays
Creators: name: Li, Haibo
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using a data sample of 122 million Upsilon(4S) -> BBbar decays collected with BaBar detector at the PEP-II asymmetric B factory at SLAC, we measure the time-dependent-asymmetry parameters of the longitudinally polarized component in the B0 -> rho^+ rho^- decay as C_L = -0.23 +/- 0.24 (stat) +/- 0.14 (syst) and S_L = -0.19 +/- 0.33 (stat) +/- 0.11 (syst). The B0 -> rho0 rho0 decay mode is also searched for in a data sample of about 227 million BBbar pairs. No significant signal is observed, and an upper limit of 1.1 * 10-6 (90% C.L.) on the branching fraction is set. The penguin contribution to the CKM angle $α$ uncertainty is measured to be 11 degree. All results are preliminary.
description: 3 pages, 1 postscript figues, submitted to DPF2004
PÉNZ- ÉS TŐKEPIACI STRATÉGIÁK RENDSZEREZÉSE, ÉS A KIVÁLASZTÁSI SZEMPONTOK KÖZÖTTI ÖSSZEFÜGGÉSEK FELTÁRÁSA
Creators: name: Kocsis, Márió
name: Zakár, Tivadar
name: Kocsis, Márió
name: Zakár, Tivadar
Publisher: name: Unknown
Year: 2012
Subjects: subject: Financial Economics
subject: stratégia
subject: tőkepiac
subject: rendszerezés
subject: ismérv
subject: csoportosítás
subject: strategy
subject: capital market
subject: systematization
subject: criteria
subject: classification

description: Kutatásunk célja a pénz- és tőkepiaci stratégiák összegyűjtése, osztályozása és rendszerezése volt. A rendszer megalkotásánál arra törekedtünk, hogy abba már a létező, vagy a későbbiekben kialakuló stratégiák is besorolhatóak lehessenek. A kutatásunk első lépéseként tőkepiaci stratégiákat kellett összegyűjteni, amelyek elemzésével létrehoztuk azokat a csoportosítási ismérveket, amelyek a rendszerező táblázatot alkotják. Ezek alapján az időtáv, a módszertani megközelítés, a kockázat kezelése és a termékek szerint rendszerezésre kerültek a stratégiák. Miután létrehoztuk a rendszert, a csoportosítási ismérvek közötti összefüggések feltárása volt a célunk. Kutatásunk eredményeként mélyebb betekintést nyertünk a hatékony stratégiák felépítésébe és használatába, amely implicit módon a stratégiák kiválasztásában, vagy akár egy új stratégia kialakításában is segítséget nyújthat. A rendszerező munkát követően arra a kérdésre kerestük a választ, hogy a stratégiák alkalmazása valóban többlethozamot eredményez-e a véletlenszerű kereskedéssel szemben. Ennek igazolására egy olyan tesztsorozatot hoztunk létre, amely során néhány stratégia eredményét összevetettük a véletlenszerűen generált kötésekből álló kontrollkereskedési adatokkal. Az eredmény visszaigazolja, hogy piaci szereplőként érdemes stratégiákat használni a hosszú távú eredményesség érdekében. ---------------------------------------------------- The objective of our research was to collect, classify and systematize money and capital market strategies. We have aimed at creating a system into which any existing or future emerging strategies could be classified. After collecting strategies we analysed them and created grouping criteria which build up our system. On this basis we systematized these strategies by horizon, method, risk management and instruments. Having created the system we have aimed to reveal relationships between grouping criteria. As a result of our research we gained deeper insight into the set up and use of efficient strategies. It can help to choose and create strategies. After the systematic work we sought the answer whether the use of strategies is more efficient than accidental trading. We created a test which compares the result of strategies and accidental trading. The results show that strategies can produce significant excess return as opposed to the accidental trading.
Quasi parton distribution functions at NNLO: flavor non-diagonal quark contributions
Creators: name: Chen, Long-Bin
name: Wang, Wei
name: Zhu, Ruilin
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a next-to-next-to-leading order (NNLO) calculation of the quasi parton distribution functions (Quasi-PDFs) in the large momentum effective theory (LaMET). We focus on the flavor non-diagonal quark-quark channel and demonstrate the LaMET factorization at the NNLO accuracy in the modified minimal subtraction scheme. The matching coefficient between the quasi-PDF and the light-cone PDF is derived. This provides a first step towards a complete NNLO analysis of quasi-PDFs and to better understand the nucleon structures from the first principle of QCD.
description: 10 pages, 3 figures; v2: accepted for publication in Physical Review D as a rapid communication
A NEM PÉNZÜGYI ESZKÖZÖK SZEREPE, JELENTŐSÉGE A KIS- ÉS KÖZÉPVÁLLALKOZÁSOK FEJLESZTÉSÉBEN
Creators: name: Kozma, Judit
name: Hágen, István Zsombor
name: Kozma, Judit
name: Hágen, István Zsombor
Publisher: name: Unknown
Year: 2012
Subjects: subject: Financial Economics
subject: vállalkozásfejlesztés
subject: nem pénzügyi eszközök
subject: kis- és középvállalkozások
subject: stratégia
subject: developing enterprises
subject: non-financial assets
subject: small and medium sized enterprises
subject: strategy

description: A KKV-k a gazdaság egyik legfőbb mozgatórugói. Jelentőségük a foglalkoztatás és a hozzáadott érték szempontjából egyaránt kiemelkedő. A téma aktualitása egyértelmű, tekintettel arra, hogy a pénzügyi-gazdasági válság miatt meggyengült kisvállalatoknak égető szüksége van a támogatásra. Annak érdekében, hogy a segítség eredményes legyen, a vállalatok vezetőinek fel kell ismernie, hogy a pénzügyi eszközök alkalmazása önmagában már nem elegendő. A válság hatására megváltozott a gazdasági környezet, felgyorsultak a gazdasági folyamatok, amelyhez a kevés tőkével rendelkező kis- és középvállalkozások nem, vagy nagyon kis hányadban tudtak alkalmazkodni. Ahhoz, hogy a kisvállalatok képesek legyenek kilábalni a jelenlegi helyzetükből, fontos hogy hosszú távú stratégiával rendelkezzenek, illetve képesek legyenek ezeket operatív szintre - a mindennapi üzletmenet szintjére- átültetni. Mindezek megvalósításában fontos szerepet töltenek be a nem pénzügyi eszközök. ------------------------------------------------------------ SMEs are one of the main drivers of economy. Their importance in employment and added value are equally outstanding. The topic’s actualization is clear, given that weakened small companies need urgent help due to the financial-economical crisis. In order to help them successfully company leaders have to recognize that using only financial assets is not enough. The crisis has changed the economic environment, speeded up economic processes, to witch small and medium sized enterprises which have very little capital couldn’t adopt, only few of them. It is important to have a long-term strategy for small companies to be able to emerge from their current situation. Also they should be able to implement these to operational level- the level of everyday business. All of these play an important role in implementing non-financial assets.
Neural Dynamical Operator: Continuous Spatial-Temporal Model with Gradient-Based and Derivative-Free Optimization Methods
Creators: name: Chen, Chuanqi
name: Wu, Jin-Long
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Data-driven modeling techniques have been explored in the spatial-temporal modeling of complex dynamical systems for many engineering applications. However, a systematic approach is still lacking to leverage the information from different types of data, e.g., with different spatial and temporal resolutions, and the combined use of short-term trajectories and long-term statistics. In this work, we build on the recent progress of neural operator and present a data-driven modeling framework called neural dynamical operator that is continuous in both space and time. A key feature of the neural dynamical operator is the resolution-invariance with respect to both spatial and temporal discretizations, without demanding abundant training data in different temporal resolutions. To improve the long-term performance of the calibrated model, we further propose a hybrid optimization scheme that leverages both gradient-based and derivative-free optimization methods and efficiently trains on both short-term time series and long-term statistics. We investigate the performance of the neural dynamical operator with three numerical examples, including the viscous Burgers' equation, the Navier-Stokes equations, and the Kuramoto-Sivashinsky equation. The results confirm the resolution-invariance of the proposed modeling framework and also demonstrate stable long-term simulations with only short-term time series data. In addition, we show that the proposed model can better predict long-term statistics via the hybrid optimization scheme with a combined use of short-term and long-term data.
On the lightlike Lorentz violation
Creators: name: Chkareuli, J. L.
name: Kepuladze, Z.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the lightlike spontaneous Lorentz invariance violation (SLIV) appearing through the zero "length-fixing" constraint put on a gauge vector field, $A_{μ}A^{μ}=0$, and discuss its physical consequences in the framework of a conventional QED and beyond. Again, as in the timelike and spacelike SLIV cases, $A_{μ}A^{μ}=\pm M_{A}^{2}$ ($M_{A}$ is a scale of SLIV), while this constraint leads to an emergence of the Nambu-Goldstone modes collected in physical photon, the SLIV itself is still left unobservable unless gauge invariance in the theory is broken. At the same time, a crucial difference with the two former cases is that the asymmetrical vacuum corresponding to the lightlike Lorentz violation appears infinitely degenerated with all other vacua including the symmetrical one. We show that this degeneracy can be lifted out by introducing an extra gauge vector field being sterile with respect to an ordinary matter, though having some potential couplings with the basic $A_{μ}$ field. A slight mixing of them makes the underlying gauge invariance to be partially broken due to which physical Lorentz invariance occurs broken as well. This may cause a variety of the Lorentz violating processes some of which are briefly discussed.
description: 15 pages, to appear in Physics Letters B, published version
DOJ Intervention and the Checkpoint Shift: Profiling Hispanic Motorists under the 287 (g) Program
Creators: name: Ortega, Alberto
name: Dantzler, Prentiss A.
name: Rubalcaba, Joaquin Alfredo-Angel
Publisher: name: American Economic Association
Year: 2024

description: This research examines whether the Department of Justice's (DOJ's) investigation into the Alamance County Sheriff's Office, a 287(g) program participant, influenced the policing behavior of other 287(g)-participating agencies in North Carolina. The study reveals that these agencies increased stops of Hispanic drivers at checkpoints following the DOJ lawsuit, indicating a strategic shift in response to potential DOJ scrutiny. Our findings suggest a phenomenon where 287(g) agencies, under threat of investigation, modify their discriminatory strategies, perpetuating racial and ethnic disparities in policing. This adds to the understanding of 287(g) and its role in fostering racial profiling.
Quantifying metadata relevance to network block structure using description length
Creators: name: Mangold, Lena
name: Roth, Camille
Publisher: name: arXiv
Year: 2023
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Network analysis is often enriched by including an examination of node metadata. In the context of understanding the mesoscale of networks it is often assumed that node groups based on metadata and node groups based on connectivity patterns are intrinsically linked. This assumption is increasingly being challenged, whereby metadata might be entirely unrelated to structure or, similarly, multiple sets of metadata might be relevant to the structure of a network in different ways. We propose the metablox tool to quantify the relationship between a network's node metadata and its mesoscale structure, measuring the strength of the relationship and the type of structural arrangement exhibited by the metadata. We show on a number of synthetic and empirical networks that our tool distinguishes relevant metadata and allows for this in a comparative setting, demonstrating that it can be used as part of systematic meta analyses for the comparison of networks from different domains.
Elementy umiędzynarodowienia polskiego przemysłu rolno-spożywczego
Creators: name: Cieślewicz, Wiesława
name: Cieślewicz, Wiesława
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Industrial Organization
subject: Production Economics
subject: internationalization
subject: agri-food sector
subject: / internacjonalizacja
subject: sektor rolno-spożywczy

description: The agricultural and food processing sector play a key role in the internationalization of Polish economy. Polish agri-food exports to the EU member countries quickly increased after the Pol- ish accession to the EU. During the years 2004-2007, food and food products accounted on average for 9,6% of total exports and 6,5% of total imports in Poland. The biggest volume of sales in foreign markets has been reported for the major branches of the Polish agricultural and food sector, i.e. meat production, dairy industry as well as fruit and vegetable processing. The main reasons for branch di- versification of the undergoing internationalization of Polish agricultural and food processing sector are the level of consumption in the domestic market, the strengthened position in the global market, the foreign demand level and the economic terms of transactions with foreign partners. / Synopis. Sektor rolno-spożywczy ma bardzo duże znaczenie w internacjonalizacji polskiej gospodar- ki. Przystąpienie Polski do UE przyczyniło się do szybkiego wzrostu eksportu polskich produktów rolno-spożywczych na rynki Wspólnoty. W latach 2004-2007 żywność stanowiła średnio 9,6% eks- portu oraz 6,5% importu Polski. Na rynki zagraniczne najwięcej sprzedają producenci głównych branż polskiego sektora rolno-spożywczego, tj. mięsnej, mleczarskiej oraz przetworów owocowych i owo- ców. Do głównych przyczyn branżowego zróżnicowania internacjonalizacji sektora rolno- spożywczego w Polsce zalicza się wielkość konsumpcji na rynku wewnętrznym, pozycję na rynku światowym, wielkość popytu zagranicznego oraz warunki ekonomiczne transakcji z partnerami za- granicznymi.
The KOF Economic Barometer, Version 2014: A Composite Leading Indicator for the Swiss Business Cycle
Creators: name: Abberger, Klaus
name: Graff, Michael
name: Siliverstovs, Boriss
name: Sturm, Jan-Egbert
Publisher: name: ETH Zurich
Year: 2014
Subjects: ECONOMIC CYCLE + BUSINESS CYCLE FORECASTS + TRADE CYCLE FORECASTS
Principal component analysis
Real-time simulations
Leading indicators
SCHWEIZ (MITTELEUROPA). SCHWEIZERISCHE EIDGENOSSENSCHAFT
SWITZERLAND (CENTRAL EUROPE). SWISS CONFEDERATION
Growth rate cycles
KONJUNKTUR + KONJUNKTURVORHERSAGEN + KONJUNKTURPROGNOSEN
Business cycles
Composite indicators
info:eu-repo/classification/ddc/330
Economics

description: KOF Working Papers, 353
Triple Memory Networks: a Brain-Inspired Method for Continual Learning
Creators: name: Wang, Liyuan
name: Lei, Bo
name: Li, Qian
name: Su, Hang
name: Zhu, Jun
name: Zhong, Yi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Continual acquisition of novel experience without interfering previously learned knowledge, i.e. continual learning, is critical for artificial neural networks, but limited by catastrophic forgetting. A neural network adjusts its parameters when learning a new task, but then fails to conduct the old tasks well. By contrast, the brain has a powerful ability to continually learn new experience without catastrophic interference. The underlying neural mechanisms possibly attribute to the interplay of hippocampus-dependent memory system and neocortex-dependent memory system, mediated by prefrontal cortex. Specifically, the two memory systems develop specialized mechanisms to consolidate information as more specific forms and more generalized forms, respectively, and complement the two forms of information in the interplay. Inspired by such brain strategy, we propose a novel approach named triple memory networks (TMNs) for continual learning. TMNs model the interplay of hippocampus, prefrontal cortex and sensory cortex (a neocortex region) as a triple-network architecture of generative adversarial networks (GAN). The input information is encoded as specific representation of the data distributions in a generator, or generalized knowledge of solving tasks in a discriminator and a classifier, with implementing appropriate brain-inspired algorithms to alleviate catastrophic forgetting in each module. Particularly, the generator replays generated data of the learned tasks to the discriminator and the classifier, both of which are implemented with a weight consolidation regularizer to complement the lost information in generation process. TMNs achieve new state-of-the-art performance on a variety of class-incremental learning benchmarks on MNIST, SVHN, CIFAR-10 and ImageNet-50, comparing with strong baseline methods.
description: 12 pages, 3 figures
Effectiveness of XBB.1.5 vaccines and antiviral drugs against severe outcomes of omicron infection in the USA
Creators: name: Duggal, Abhijit
name: Lin, Dan-Yu
name: Milinovich, Alex
name: Wang, Xiaofeng
name: Huang, Shuaiqi
Publisher: name: Elsevier
Year: 2024

description: In the fall of 2023, the US Food and
Drug Administration (FDA) authorised
the use of the updated Moderna
(Sept 11), Pfizer-BioNTech (Sept 11),
and Novavax (Oct 3) COVID-19 vaccines
containing a monovalent component
of the XBB.1.5 variant “to provide
better protection against serious
consequences of COVID-19, including
hospitalization and death”, with
neither the FDA nor the companies
providing clinical evidence.
Konwergencja czy dywergencja mechanizmów wsparcia sektora rolnego?
Creators: name: Czyżewski, Andrzej
name: Kułyk, Piotr
name: Czyżewski, Andrzej
name: Kułyk, Piotr
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Political Economy
subject: agricultural policy
subject: convergence theory
subject: globalization
subject: / polityka rolna
subject: teoria konwergencji
subject: globalizacja

description: In the last few decades there has been much debate on the convergence theory of the general and the particular aspects of this process. It has, however, resulted in a lot of controversy, debate and confusion as to how one should measure and interpret the convergence. We show that misspecification sources need to be carefully taken into account. We have tested the hypothesis about convergence of the agricultural support policy both in the regional and global approach. We have analyzed two approaches to the convergence process, the so called β-convergence and σ-convergence in the agricultural support policy. We measure the effects of a policy with the size of retransfer of economic surplus according to the OECD methodology. Research included years 1986-2006 and concerned a group of states, belonging to the OECD, with diverse levels of economic development. The research showed a limited character of the investigated phenomenon. In spite of the premises being an evidence of the effect of processes of liberalization and globalization of the world economy and the agreements in the area of agriculture reached within the framework of the WTO we did not confirm the hypothesis about an absolute convergence of the size of retransfers. We can observe only a regional conditional convergence which means the existence of several separable points of convergence. This shows that in the process of globalization of the farming sector still the key role play national policies of the states dominating in the world market. / Synopsis. Prowadzona od kilku dekad dyskusja wokół przekształceń w polityce wsparcia sektora rolnego, zarówno w ujęciu regionalnym jak i globalnym, koncentruje się także na problemie konwergencji wielkości wsparcia. W artykule analizujemy różne podejścia do procesów konwergencji, w tym także ujęcie β-konwergencji i σ-konwergencji, oraz polityki wsparcia, wyznaczonej wielkością retransferów zgodnie z metodologią OECD, w odniesieniu do jednego aktywnego zawodowo w rolnictwie. Badania obejmowały lata 1986-2006 i dotyczyły grupy państw o zróżnicowanym poziomie rozwoju gospodarczego. Mimo występujących przesłanek będących efektem procesów liberalizacji i globalizacji gospodarki światowej, w tym porozumień w obszarze rolnictwa osiągniętych w ramach WTO, nie uzyskano potwierdzenia hipotezy o absolutnej konwergencji wielkości retransferów. Można natomiast mówić o ograniczonym charakterze występowania analizowanego zjawiska. Wskazuje to na fakt, iż w procesie globalizacji sektora rolnego nadal kluczowe znaczenie odgrywają polityki krajowe państw dominujących na rynku światowym.
Spółdzielczość bankowa w Polsce na tle wybranych spółdzielczych grup i systemów bankowych Unii Europejskiej
Creators: name: Gajowiak, Dominik K.
name: Gajowiak, Dominik K.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: International Relations/Trade
subject: cooperative banking
subject: models of the cooperative banking
subject: economic and organisational situation
subject: / spółdzielczość bankowa
subject: modele spółdzielczości bankowej
subject: sytuacja ekonomiczno-organizacyjna

description: The aim of the paper is an attempt to assess the economic and organisational situation of the Polish cooperative banking group against the background of the selected cooperative banking groups and systems, associated with the European Association of Co-operative Banks (EACB), which is the largest European organization of the type. The analysis was realized basing on data published by the EACB for years 2005-2007. / Synopsis. Celem opracowania jest próba oceny sytuacji ekonomiczno-organizacyjnej polskiej spółdzielczości bankowej na tle wybranych spółdzielczych grup i systemów bankowych, stowarzyszonych w Europejskim Związku Banków Spółdzielczych (EACB), który jest największą europejską tego typu organizacją. Analizę przeprowadzono w oparciu o dane opublikowane przez EACB za lata 2005-2007.
“Relative Movements of Real Wages and Output”: How does Keynes’s 1939 essay relate to his Principle of Effective Demand?
Creators: name: Hartwig, Jochen
Publisher: name: ETH Zurich
Year: 2014
Subjects: D/Z model
KEYNESIANISM (ECONOMIC THEORIES)
Marginal returns to labour
LABOUR ECONOMICS
DEMAND (ECONOMIC THEORY)
NACHFRAGE (WIRTSCHAFTSTHEORIE)
Effective demand
Keynes
KEYNESIANISMUS (WIRTSCHAFTSTHEORIEN)
ARBEITSÖKONOMIE
REALLOEHNE
REAL WAGE
info:eu-repo/classification/ddc/330
Economics

description: KOF Working Papers, 355
Wpływ integracji Polski z Unią Europejską na przemiany jakości produkcji przedsiębiorstw rolno-spożywczych
Creators: name: Grębowiec, Mariusz
name: Grębowiec, Mariusz
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Industrial Organization
subject: International Relations/Trade
subject: quality
subject: competitiveness
subject: market
subject: quality systems
subject: quality management
subject: / jakość
subject: konkurencyjność
subject: rynek
subject: systemy jakości
subject: zarządzanie jakością

description: The essential part of the paper is sacrificed to reviewing the major types of quality systems and quality marks as well as their impact on the economic situation of a group of examined enterprises from agri-food branch. Furthermore, other factors which, combined with successfully implemented quality rules, can have an essential influence on building permanent competitive advantages, are presented. / Synopsis. W pracy zwrócono szczególną uwagę na podstawowe rodzaje systemów i znaków jakości oraz ich wpływ na sytuację ekonomiczną grupy badanych przedsiębiorstw, reprezentujących branżę rolno-spożywczą. Zwrócono również uwagę na inne czynniki, które w połączeniu ze skutecznie wdrożonymi zasadami jakościowymi mogą mieć istotny wpływ na budowanie trwałych przewag konkurencyjnych.