Abide With Me

We got jobs and moved to the Islands, away from the dim hollow of a Continent. Set ourselves up in a modest bungalow across the street from a beach park. We assembled a pallet of Scandinavian furniture, hung mirrors, piped in soft music. When we looked out the picture window we saw, in the upper left hand corner, the blue skin of the sea. We saw surfboards attached to mopeds, tour buses, ambulances three times a day. We saw, sometimes, huge encampments. Family reunions. Bounce houses. Bands playing. Spear fishers cleaning their catch at the showers

Detection of Tectonic and Crustal Deformation using GNSS Data Processing: The Case of PPGnet

Aitolo-Akarnania prefecture, western Greece, is an area with strong earthquakes and large active fault systems. The most prominent are the Katouna sinistral strike slip fault and the Trichonis Lake normal fault system. Their proximity to large cities, and the lack of detailed information on their seismogenic potential, calls for multiparametric research. Since 2013, the area’s crustal deformation has been monitored by a dense GNSS Network (PPGNet), consisting of five stations, equipped with Leica and Septentrio receivers. The objective of this network is to define the rate of deformation across these two main fault systems. Data is recorded using two sampling frequencies, 1 Hz and 10Hz, producing hourly and daily files. Daily data is processed using Bernese GNSS Processing Software using final orbits of International GNSS Service. Double-difference solution is computed using phase measurements from the PPGNet network complemented by four stations from Athens’ National Observatory GNSS network and six stations from METRICA network. First results show a NNE movement at PVOG station of 12 mm/y and a similar movement at RETS station of about 9 mm/y. This means that the Trichonis Lake normal fault system, located between these two stations, depicts a slip rate of 3 mm/y. KTCH and RGNI stations move eastwards at a velocity of about 5 mm/y due to the Katouna-Stamna fault system. Data from PPGNet has provided important results on crustal deformation in the area, i.e. slip rates have been attributed to specific fault systems. The comparison and links of these data with broader geodynamic models is now possible and we expect, in a later phase that will provide a more detailed image of the associated seismic hazard for Aitolo-Akarnania. Doi: 10.28991/cej-2021-03091633 Full Text: PD

The Patras earthquake (14 July 1993): relative roles of source, path and site effects

Abstract A damaging earthquake occurred on 14 July 1993 in Patras, Western Greece. The mainshock (local magnitude 5.1) was followed on the same day by two aftershocks of magnitudes 4.4 M L and 3.6 M L , respectively. The strong motion record of the mainshock is studied, based on the teleseismically determined seismic moment and focal mechanism. The Discrete Wavenumber (DW) and Empirical Green's Function (EGF) methods are used. The main conclusion is that the 1993 Patras mainshock had a complex S-wave group mainly due to structural (path and site) effect. However, some effects of the rupture stopping on the peak ground acceleration (0.2 g in the so-called S3 phase) cannot be ruled out. Two values of the source radius are suggested: R = 1.9 and 3.0 km. The strong motion record better agrees with R = 1.9 km. If the latter is true, the stress drop was of the order of 20 MPa, i.e., higher than often reported for comparable events in Western Greece. Regardless of the true source radius, the ratio of stress drops between the mainshock and aftershocks was about 1-2. The aftershock waveforms indicate significant lateral heterogeneities around Patras. Therefore, the ground-motion predictions of strong events in the area will remain highly non-unique until weak events from an immediate neighbourhood of the particular fault are recorded

Low-parametric modeling of Mw8.3 Illapel 2015, Chile earthquake

The Mw 8.3 (GCMT) Illapel megathrust earthquake is investigated. The objective is to find out which features of the previously published rupture scenarios can be resolved using a regional strong-motion network and source models with few parameters only. Low-frequency waveforms (<0.05 Hz), at nine stations (Centro Sismológico Nacional, Chile - CSN), are subjected to modeling. Various representations of the source are used: (i) Multiple-point-source models based either on iterative deconvolution or simultaneous inversion of source pairs, (ii) Models of circular and elliptical uniform-slip patches, employing synthetic and empirical Green’s functions, respectively. This variety of methods provides consistent results. The earthquake appears to be a segmented rupture progressing from an early (deep) moment release to a later (shallow) one, towards the NW. The source models of slip-uniform patches synchronously suggest a low rupture speed 1-2 km/s. Despite different data sets and methods, this estimate of rupture speed is consistent with independent publications. As for ambiguity in literature regarding depth and timing of the rupture, our paper clearly prefers the models including a ~20-30 s delay of the shallow moment release compared to the initial deep one. The strong-motion data set and low-parametric models proved to be competitive with more sophisticated approaches. This result implies a need to improve regional accelerometer networks in South America, which might eventually help in resolving source process of possible future large events, e.g. in Patagonia.Eje: Estudio del Interior Terrestre.Facultad de Ciencias Astronómicas y Geofísica

Supply logistics in the restaurant and hotel industry

The thesis deals with the analysis of supply logistics of specific restaurant and hotel operation. Currently, in times of high and hard competition, supply proces plays an increasingly important role. A suitably chosen procurement process and choice of suppliers is to a large extent a competitive advantage, for example in the form of higher ingredient freshness, flexible deliveries or cost savings. The aim of the thesis is to approach, analyze and subsequently evaluate the current supply process and find its possible optimization. The first part deals with the theoretical knowledge and methods of the given topic, processed on the basis of available literature and electronic resources. The second part focuses on practical knowledge of specific restaurant and hotel operations. This section will be mainly based on interviews with the owner and staff of the restaurant and the analysis of internal documents.Práce se zabývá analýzou zásobovací logistiky konkrétního restauračního a hotelového provozu. V současné době vysoké a tvrdé konkurence hraje v tomto odvětví zásobování čím dál tím důležitější roli. Vhodně zvolený proces zásobování a volby dodavatelů je do značné míry konkurenční výhodou například v podobě vyšší čerstvosti surovin, flexibilních dodávek či snižování nákladů. Cílem práce je přiblížit, analyzovat a následně zhodnotit dosavadní proces zásobování a najít jeho možnou optimalizaci. První část práce se věnuje teoretickým poznatkům a metodám daného tématu, zpracovaných na základě dostupné literatury a elektronických zdrojů. Část druhá je zaměřena na praktické poznatky z konkrétního restauračního a hotelového provozu. Tato část bude zpracována především na základě rozhovorů s majitelem a zaměstnanci restaurace a analýzy interních dokumentů

Erfassung der Populationen von Orchis militaris und Orchis ustulata im Planungsgebiet LIFE+ Traisen im Natura 2000 Gebiet "Tullnerfelder Donauauen"

Das Natura 2000 Gebiet Tullnerfelder Donauauen ist Heimat vieler seltener Arten. Der Bereich der M\ufcndung der Traisen bei Altenw\uf6rth in die Donau wird im Rahmen des LIFE+ Projektes renaturiert. Dadurch soll die Aue wieder naturnaher Bedingungen unterworfen werden. Im Rahmen dieser Arbeit wurde das Vorkommen zweier bedrohter Orchideenarten, Orchis militaris und Orchis ustulata, im Bereich des Donaukraftwerkes Altenw\uf6rth s\ufcdlich der Donau im Renaturierungsgebiet der Traisen, untersucht. Die Orchideenbest\ue4nde wurden im Fr\ufchjahr 2014 kartiert. Dabei zeigte sich ein Schwerpunkt der Verbreitung rund um das Donaukraftwerk und der Zufahrtsstra fe dahin sowie ein massives Ungleichgewicht bez\ufcglich der Individuenanzahlen der beiden Arten zu Gunsten von Orchis militaris. Westlich dieses Verbreitungsschwerpunktes konnten nur noch geringe Dichten an Orchideen festgestellt werden bis hin zu Einzelpflanzen. Eine m\uf6gliche Ursache wurde in der Verbuschung und mangelnden Pflege dieser Fl\ue4che gefunden. Auf den westlichst gelegenen Fl\ue4chen wurde nur noch Orchis militaris, die anscheinend konkurrenzst\ue4rker als Orchis ustulata ist, gefunden. Ein wichtiger Faktor, der die Verbreitung der Orchideen, aber besonders von Orchis ustulata, im Untersuchungsgebiet bestimmt, ist die Pflege der Fl\ue4chen und die Bewahrung der Freifl\ue4chen vor weiterer Sukzession. Au ferdem scheint Orchis ustulata auch Fl\ue4chen mit Solidago sp. wegen der starken Konkurrenz zu meiden, weswegen es f\ufcr diese Orchideenart von Vorteil w\ue4re einen Weg zu finden Solidago zu bek\ue4mpfen. Um die Best\ue4nde der Orchideen in Zukunft zu erhalten oder zu erh\uf6hen ist ein langfristiges Monitoring der Fl\ue4chen sowie der Erhalt einer f\ufcr die Orchideen g\ufcnstigen Vegetationsstruktur von Bedeutung.The Natura 2000 site Tullnerfelder Donauauen is characterized by being a habitat of many rare indigenous plant species. Within the scope of the Life+ project the Traisen river is going to be restored in the concourse area of Traisen and Danube aiming the reconstruction of natural riverside forest conditions. In this master thesis the populations of the rare orchid species Orchis militaris and Orchis ustulata were monitored in the region near the hydroelectric power plant Altenw\uf6rth. The investigation of recent orchid population numbers was carried out during spring 2014. Most of the orchid habitats were detected near th the hydroelectric power plant and in the meadows accompanying the access road. Meadows in the investigation area were characterized by differing habitat structures from wetlands to hot and dry sites underlying varying cultivation methods and included natural and formerly agricultural sites as well. Overall numbers at the monitoring site of Orchis militaris individuals were significantly higher then Orchis ustulata numbers. In the western regions of the study area only populations of small density and single individuals were observed. The main reason for this circumstance may be the lack of meadow cultivation management which leads to uncontrolled growth of shrubs and trees in the formerly open spaces. In these areas only Orchis militaris was found because this species is more tolerant to environmental influences then Orchis ustulata. One important factor supporting the growth and long term establishment of orchids, especially Orchis ustulata is the ecological quality of meadow cultivation management procedures. Unlike Orchis militaris Orchis ustulata seems to be more sensitive to ecological changes caused by the regionally well established neophyte plant Solidago. In order to protect Orchis ustulata populations of Solidago should be drastically reduced by cultivation management. Long term monitoring of orchid populations and accompanying flora completed by vegetation management plan is critical for preservation of the orchid population structure and improvement of growth condition.durchgef\ufchrt von Alexandra PlickaZusammenfassung in englischer SpracheMasterarbeit Universit\ue4t f\ufcr Bodenkultur 201

Modelling of finite-extent seismic sources by empirical Green's functions.

The dissertation is devoted to earthquake modelling by the EGF method. It is based on three published papers in which the EGF method is applied and innovated. The main innovation is the modification of the standard EGF method to allow unequal focal mechanism of mainshock and aftershock, and in retrieval of so-called Empirical Green's tensor derivatives, EGTD. Alternative techniques used in the dissertation include the synthetic Green's function method for point and finite extent sources. The methods are applied to weak earthquakes in western Bohemia and two damaging earthquakes in Greece. The EGF method belongs to the most powerful modelling tools. The suggested innovations may further strengthen its advantages, e.g. in the non-DC focal mechanism retrieval, as well as in studies of heterogeneous slip inversion. This is the author's plan for future research.Available from STL Prague, CZ / NTK - National Technical LibrarySIGLECZCzech Republi

Recruitment in the organization

Práce se zabývá analýzou náborového procesu v konkrétní strojírenské společnosti. Cílem je přiblížit, analyzovat a následně zhodnotit dosavadní proces získávání, výběru, přijímání a adaptace pracovníků a najít možnou optimalizaci těchto procesů. První část se věnuje teoretickým metodám a přístupům náborového procesu, které bývají v praxi nejčastěji uplatňovány. Praktická část je zaměřena na přiblížení a analýzu konkrétních metod a postupů náborového procesu ve vybrané společnosti. Analýza jednotlivých procesů bude probíhat především na základě rozhovorů se zaměstnanci personálního oddělení dané společnosti a analýzy interních dokumentů. Tento proces bude na základě teoretických poznatků vyhodnocen a následně bude navrženo možné řešení pro zlepšení efektivnosti tohoto procesu.The bachelor's thesis deals with the analysis of the recruitment process in a particular engineering company. The aim is to explain, analyze and evaluate the current process of recruitment, selection, hiring and adaptation of workers and find possible optimization of these processes. The first part deals with theoretical methods and approaches of the recruitment process, which are in practice most frequently applied. The practical part focuses on the approach and analysis of specific methods and procedures of the recruitment process in a selected company. Analysis of individual processes will be primarily based on interviews with employees of the HR department of the company and analysis of internal documents. This process will be evaluated on the basis of theoretical knowledge and subsequently suggested a possible solution to improve the efficiency of the process