Property Management Analytics (OLAP) System

In information technology, on-line analytical processing (OLAP) is an approach or technique to analyze the raw data in multi-dimensional analytical perspectives to provide summaries. OLAP consists of basic analytical operations such as consolidation (roll-up), drill-down, and slicing and dicing. This involves aggregation of data that can be accumulated and computed in one or more dimensions based on the data hierarchy. Typical applications of OLAP include key performance indicators i.e., does the current value satisfy the goal, business reporting for sales, marketing, management reporting, business process management (BPM), budgeting & forecasting, financial reporting. OLAP functionality depicts the multi-dimensional analysis of consolidated enterprise data supporting end user analytical and navigational activities including: calculations and modeling applied across dimensions, hierarchies, trend analysis over sequential time periods, and drill-down to deeper levels of consolidation. OLAP encompasses: Relational database Report writing Data mining Databases configured for OLAP uses a multi-dimensional data model, allowing for complex analytical and ad-hoc queries with a rapid execution time. They borrow aspects of navigational databases, hierarchical databases, and relational databases that allow business users to slice and dice data at will. Property Management Analytics (OLAP) System is being developed for the in-house use for meeting business needs from time to time. This Property Management Analytics (OLAP) System will extensively be used by managers and service providers, which will help in making certain business decisions. It was developed for this audience to be able to provide better service. A key feature of this Property Management Analytics (OLAP) System is embedding business portability centralized to one system

SYNTHESIS OF BIO – DEGRADABLE BANANA NANOFIBERS

The present work includes the development of composites in nano based, reinforced with natural fibers. The fibers to be studied come from mechanical extraction from banana. The process, in general, consists of mechanical extraction. Further, the fibers are cut, classified in the adequate mesh and later on undergoes a chemical pulping process. The pulp is hydrolized and filtered, in order to produce nanofibers. A great deal of attention has been paid recently to cellulosic nanofibrillar structures as components in nanocomposites. Present paper is aimed for production of Nano Banana fibers using high energy ball milling method. Banana stem powder was soaked in sodium hypochlorite solution for 24 h at room temperature then ball milled at variable milling time to produce banana stem powder dispersions with variable particle size. The effect of ball milling time on the particle size and morphology of the banana stem powder particles was examined. Results showed the mean particle size of the banana stem powder reduced progressively with milling time. The size of chemically treated fibers is reduced down to Nano crystalline level by high energy ball milling. Wet ball milling was carried out for the production of Banana Nano fibers. Wet milling with toluene as medium was carried out for different milling hours viz. 20, 40, 60 and 80 hours. The nanofibers are characterized by X-ray diffraction to measures the crystallinity

Determining the trajectory of the vehicle motion on the basis of the recorded physical quantities describing its dynamics during double lane change maneuvers

The paper indicated the results of the vehicle motion trajectory calculations determined on the basis of the recorded waveforms of the acceleration vector and angular velocity components during the double lane change maneuver, taking into account the errors of acceleration sensors reset (zeroing). For the sake of simplicity, it was assumed that the zeroing errors apply only to the linear acceleration sensors, while the angular velocity sensors show exact values at the time t = 0 s (when starting the double lane change maneuver). During the analysis of the results of the experimental research, the vehicle kinematics model was used, in which right-handed coordinate systems were used: global and two local coordinate systems. The differences in the results of the calculations were determined and possible causes of these differences were indicated. The test results indicate that special attention should be paid to zeroing the acceleration sensors, in particular the ay component

Problemy poruszania się autobusów po skrzyżowaniach z ruchem okrężnym

W artykule zanalizowano problem poruszania się autobusów po rondzie z ruchem okrężnym. Problem fizycznej możliwości przejechania przez rondo wynika z małej szerokości pasa ruchu oraz z występowaniem zjawiska tzw. "zachodzenia z tyłu". Szerokość skrętu ma kluczowe znaczenie w przypadku autobusów miejskich, przegubowych o dużym zwisie przednim

Analysis of motorcyclist’s body movement during a motorcycle impact against a motor car side

The motorcyclist’s body motion following a motorcycle impact against a motor car side is determined by a system of forces and reactions acting on the rider’s body. An analysis of this motion was carried out, based on a research experiment. The related measurements and calculations were taken as a basis for an analysis of the dynamic loads; they also indicated the type and scope of the bodily injuries that may be incurred by the motorcyclist during a road accident. Based on the research experiment, the trajectory of motorcyclist’s head and torso and the course of contact between the motorcyclist’s body and the car were determined. The acceleration values having been obtained from the measurements were used for determining the displacements and changes in the angular position of motorcyclist’s head and torso. The research experiment confirmed the motorcyclist’s head to be the part of his/her body that undergoes the highest accelerations. The system of forces and reactions acting on motorcyclist’s body at the initial stage of the motion under consideration may lead to a situation dangerous to the motorcyclist where his/her head hits the edge of the car roof

Wyznaczanie niepewności obliczeń w przypadku modeli nieliniowo zależnych od parametrów

The problem of determining the uncertainty of results of calculations carried out e.g. during expert.s activities within the reconstruction of road accidents has been addressed in this paper. The total differential formula that is often used to estimate the uncertainty of calculation results has the from of a Taylor series where the terms comprising higher-order partial derivatives have been omitted. Then, a question arises whether the omission of these terms, if they exist, may have a considerable impact on the accuracy of uncertainty calculation results. The effect of the omission of these terms has been analysed in this paper with taking as an example the estimation of uncertainty of the stopping distance of a braking motorcycle. It has been found that in the case of mathematical models where the final nonlinearly depends on model parameters, the differences ontained may be significant.W artykule podjęto problem określenia niepewności wyników obliczeń prowadzonych np. podczas praktyki rzeczoznawczej w ramach rekonstrukcji wypadków drogowych. Często stosowany do oceny niepewności wyników obliczeń wzór na różniczkę zupełną ma postać szeregu Taylora, w którym pominięto człony zawierające pochodne cząstkowe wyższych rzędów. Powstaje pytanie, czy pominiecie tych członków, jeśli istnieją, może mieć istotny wpływ na dokładność obliczenia niepewności. W artykule, na przykładzie oceny niepewności długości drogi zatrzymania hamującego motocykla, przeanalizowano wpływ pominięcia tych członów. Okazuje się, że w przypadku modeli matematycznych, w których wynik końcowy zależy nieliniowo od parametrów modelu, różnice mogą być znaczące

Charakterystyka obrotu i unoszenia motocykla po uderzeniu w bok samochodu

An analysis of the course of a road accident where a motorcycle hit the side of a passenger car has been presented. The scope of the analysis was limited to the post-impact motorcycle movement at the initial stage of contact with the car. At this stage, the most important forms of this movement include rotation of the motorcycle around a variably located instantaneous centre and lifting of the rear end of the motorcycle. Based on an analysis (frame-by-frame) of the video record of the experiment and the acceleration values measured on the motorcycle frame, the parameters of motorcycle motion were determined for specific time instants. The trajectories of noteworthy motorcycle points after the motorcycle impact against the car have been shown. The parameters of motorcycle motion as determined from the experiment may provide a good basis for the road accident reconstruction process and for the analysis of the course of generation of injuries to motorcyclist's body. The course of the process of motorcycle rotation and lifting has crucial influence on the movement of motorcyclist's body and especially on the point of impact of motorcyclist's head against the car. The location of this point (side window, roof edge, roof panel) is critical for the type of the head injuries resulting from the accident.Przedstawiono analizę przebiegu wypadku drogowego polegającego na uderzeniu motocykla w bok samochodu osobowego. Obszar analizy został ograniczony do pozderzeniowego ruchu motocykla w początkowej fazie kontaktu z samochodem. Wówczas jedną z ważnych form ruchu jest obrót motocykla wokół chwilowego środka o zmiennym położeniu oraz unoszenie jego tyłu. Na podstawie analizy filmu z eksperymentu (metodą klatka po klatce) oraz pomierzonych wartości przyspieszeń na ramie motocykla określono parametry tego ruchu w poszczególnych chwilach czasu. Pokazano trajektorię ruchu charakterystycznych punktów motocykla po jego uderzeniu w samochód. Wyznaczone parametry ruchu motocykla stanowić mogą dobrą podstawę do procesu rekonstrukcji wypadków drogowych i analizy powstawania obrażeń u motocyklisty. Przebieg procesu obracania i unoszenia motocykla ma zasadniczy wpływ na ruch ciała motocyklisty, a przede wszystkim na miejsce uderzenia jego głowy w samochód. Położenie tego miejsca (szyba boczna, krawędź dachu, dach) silnie wpływa na charakter obrażeń głowy, które powstają w czasie wypadku

Defect-Induced Self-Poling in a W₁₈O₄₉/PVDF Piezoelectric Energy Harvester

W18O49 nanostructures, previously used for electrocatalysis, energy storage, electrochromic, and gas sensing applications, are incorporated in poly(vinylidene fluoride) (PVDF) in this work for mechanical energy-harvesting applications. X-ray diffraction spectroscopy (XRD), high-resolution transmission electron microscopy (HR-TEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, differential scanning calorimetry (DSC), and the polarization-electric (P-E) field loop test prompts the addition of W18O49 nanorods in PVDF nucleates and stabilizes the piezoelectric polar γ-phase in the nanocomposite. Electrochemical experiments were employed for the first time to relate the event of the evolution of crystalline phases in PVDF to the transfer of electrons to the electrolyte from PVDF using the data from cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). High dielectric constant (ε′) and low dielectric loss (ε″) values were obtained proportionately for different weight percentage additions of W18O49 nanorods in PVDF. DSC was employed to study the crystallization kinetics of γ-phase evolution. Piezoresponse force microscopy (PFM) was used to compare the piezoelectric responses from the PVDF nanocomposites. The W18O49/PVDF nanocomposite could generate a peak open circuit voltage of ∼6 V and a peak short circuit current of ∼700 nA. The W18O49/PVDF nanocomposite could light two commercial blue-light-emitting diodes (LEDs) with hand impulse imparting

Satisfaction with Life after Rectal Prolapse Surgery

Assessment of satisfaction with life, as a result of comparing own life situation with the individualised personal standards, is an important element for measuring satisfaction with life of the patients suffering from somatic disorders. Literature provides numerous data on satisfaction with life of different groups of patients suffering from somatic disorders. Little space is devoted to the study of the level of satisfaction of patients with rectal prolapse, which is particularly evident in relation to the Polish patient population. The aim of the studywas planned to determine the level of satisfaction with life and its determinants among patients with full-thickness rectal prolapse surgery as well as to assess the improvement of continence after this surgery. Material and methods.The study group consisted of 20 patients operated on for full-thickness rectal prolapse in the Department of General and Colorectal Surgery, Medical University in Lódź. SWLS (Satisfaction with Life Scale) Diener et al. in the Polish adaptation by Juczyński was used to assess global life satisfaction. Assessment of the incontinence severity and the postoperative improvement was made with Jorge and Wexner scale. Results.The average level of global life satisfaction among patients with rectal prolapse surgery is 21.05 (SD = 4.68) and it corresponds to the level of satisfaction of the total population. In the study group, there were no statistically significant differences in the level of global satisfaction with life depending on age, disease recurrence and continence improvement after surgery. The continence after rectal prolapse surgery improved significantly (p< 0.05). Conclusions.The most common consequences of rectal prolapse include incontinence of varying severity. The studies give grounds for considering that a rectal prolapse surgery is an effective method of treatment, being conducive to continence improvement in the study group. Rectal prolapse involves also numerous psychosocial consequences. Due to the complexity of the problem, it appears advisable to undertake further empirical studies with the object of identifying the factors influencing life satisfaction of patients operated on for rectal prolapse