cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Suppression of single cesium atom heating in a microscopic optical dipole trap for demonstration of an 852nm triggered single-photon source
Creators: name: Liu, Bei
name: Jin, Gang
name: He, Jun
name: Wang, Junmin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate single cesium (Cs) atom heating owing to the momentum accumulation process induced by the resonant pulsed excitation in a microscopic optical dipole trap formed by a strongly focused 1064 nm laser beam. The heating depends on the trap frequency which restricts the maximum repetition rate of pulsed excitation. We experimentally verify the heating of a single atom and then demonstrate how to suppress it with an optimized pulsed excitation/cooling method. The typical trap lifetime of single Cs atom is extended from 108 +/- 6 us to 2536 +/- 31 ms, and the corresponding number of excitation increases from ~ 108 to ~ 360000. In applying this faster cooling method, we use the trapped single Cs atom as a triggered single-photon source at an excitation repetition rate of 10 MHz. The second-order intensity correlations of the emitted single photons are characterized by implementing Hanbury Brown and Twiss setup, and clear anti-bunching effect has been observed.
description: 10 pages, 7 figures
title: Enhancement of a Modular and Versatile UAV Propeller Force Measurement System
Creators: name: Rieger, C.
name: Holzäpfel, A.L.
name: Hornung, M.
Publisher: name: Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V.
Year: 2023

description: Designing vertical take-off and landing (VTOL) unmanned aerial vehicles (UAV) requires precise propeller data for optimization. A propeller test bench is available at the institute of aircraft design at TUM. To determine its accuracy, previous measurements were compared to public data using the same propellers. This evaluation revealed deviations and led to a complete redesign of the hardware, software as well as additions of several environmental sensors for a precise measurement. The paper describes the problems encountered at the old test bench, develops solutions to counter them and shows the current state of the refurbishment. Several propellers have been tested and their preliminary propeller coefficients are presented.
Assessment Of Health Commodities Inventory Management Practices And Challenges: The Case Of Zewditu Memorial Hospital, Addis Ababa, Ethiopia
Creators: name: Semahegn, Azeb
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Background: Health commodities inventory management practices provide current information on quantities of health commodities consumed as well as enables to accurately estimate requirements for future use. A poorly functioning health commodities inventory management can lead to frequent stock outs leading to services interruptions or overstock. The objective of the study was to assess the health commodities inventory management practice of the Zewditu Memorial Hospital using primary data that was collected through a semi-structured questionnaire, observation check list & interview. Out of the 91 questionnaires that were distributed to the purposively elected employees of the hospital, 77 (84.6%) of them were collected back and used for the analysis .Besides 4 hospital stores were visited & all the required information were included in this study .Data was analyzed using descriptive statics . The study found that ZMH health commodities to be long-term agreements between the hospital and its suppliers, maintain proper store management the majority of the store managers had adequate knowledge how to store and practiced health commodities and they had also a positive attitude towards the importance of appropriate storage of commodities, obsolete, expired, or damaged inventories properly identified and segregated, inventory records reconciled to advantage reports on a regular basis and management have review the reconciliation of physical inventory counts to the inventory records applied at ZMH but ,uses automatic stock tracking and adequate detailed written inventory instructions and procedures exist, uses Enterprise Resource Planning system, maintains a data base for all suppliers, uses Just In Time stock control system and an integrated information sharing system were not applicable at ZMH. Finally from the study it can be concluded that the main challenges of the hospital in managing inventory are: lack of modern technologies, insufficient funding, lack of inventory management training, the length of bureaucratic processes in the procurement system and stock out of health commodities. In general the consequences of the above were occurred high level of stock out which might have leaded to services interruptions at ZMH health commodities. Based on these findings, the study recommends that government allocates more funds to public hospitals to be invested in modern information technologies because this will lead to increased information sharing, reduction of costs and improved quality of health services. In addition, inventory management training should be given to improve the availability and the quality of services in ZMH.
A framework or Multimodal Risk Assessment And Symptom Tracking: MRAST Framework
Creators: name: Mlakar, Izidor
name: Šafran, Valentino
name: Urška Smrke
name: Arioz, Umut
Publisher: name: Zenodo
Year: 2022
Subjects: digital biomarkers of depression
facial cues
speech cues
language cues
end-to-end pipline
depression classification

description: The MRAST framework is built on top of the cutting-edge AI algorithms and machine learning models for feature extraction. The final structure of the MRAST framework is given in the figure above. The goal of the framework is to extract observable biomarkers of depression from patient diaries and risk asses individuals against depression. It is built on top of PERSIST Sensing network.
Tan's contact and the phase distribution of repulsive Fermi gases: Insights from QCD noise analyses
Creators: name: Porter, William J.
name: Drut, Joaquín E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Path-integral analyses originally pioneered in the study of the complex-phase problem afflicting lattice calculations of finite-density quantum chromodynamics are generalized to non-relativistic Fermi gases with repulsive interactions. Using arguments similar to those previously applied to relativistic theories, we show that the analogous problem in nonrelativistic systems manifests itself naturally in Tan's contact as a nontrivial cancellation between terms with varied dependence on extensive thermodynamic quantities. We analyze that case under the assumption of gaussian phase distribution, which is supported by our Monte Carlo calculations and perturbative considerations. We further generalize these results to observables other than the contact, as well as to polarized systems and systems with fixed particle number. Our results are quite general in that they apply to repulsive multi-component fermions, are independent of dimensionality or trapping potential, and hold in the ground state as well as at finite temperature.
description: 6 pages, 1 figure
Removal of Heavy Metals from Electroplating Waste Water Industry Using Adsorption Techinque(Lignite Coal)
Creators: name: Hiluf, Hailu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: Wastewater from industry can lead to water pollution if untreated, especially due to its high concentration of heavy metals. Heavy metals are considered extremely harmful because they can cause illnesses, disorder and diseases to human. Therefore, industrial wastewater containing heavy metal should be treated before discharge to the water stream but its treatment is very costly. There are several techniques to remove heavy metals from wastewater such as biosorption, filtration and adsorption of heavy metal but there is some limitation such as long treatment time. The adsorption of copper and zinc from synthetic wastewater by lignite coal was investigated. The effect of different environmental conditions such as contact time, initial metal ion concentration adsorbent dosage and pH on metal ions removal has been studied by keeping stirring at 200rpm and solution temperature of 25oc. Experiment results showed that maximum removal of Cupper ion by lignite coal at optimum condition (6 pH, 120 min. contact time, 2g adsorbent dose and 200ppm concentration) is 82.32% and for Zinc ion are 77.54% at optimum condition (4 pH, 90 min. contact time and 1.5g adsorbent dose, 150ppm concentration). These experimental studies on adsorbents would be quite useful in developing an appropriate technology for the removal of heavy metal ions from contaminated industrial effluents.The adsorption data of metal ions at temperature of 25°C have been described by the Freundlich and Langmuir isotherm models. The sorption process conformed to both Langmuir and Freundlich isotherms with maximum sorption capacities of 16.468 and 13.45mg/g for copper and zinc, respectively. The equilibrium time was found to be of the order of 120 minute for copper and 90 minute for zinc sorption by lignite coal. Sorption kinetics was determined using pseudo first-order, second order and, hence adsorption rate constants were calculated. The results revealed that sorption kinetics of copper and zinc followed pseudo second order with regration coefficients of 0.9994 and 0.9988 respectively. Optimum results were applied to remove copper and zinc from real electroplating wastewater. Optimum parameters for copper sorption were pH=6, contact time =120 mins, and lignite dosage of 2gm and for zinc batch sorption were; pH=4, contact time =90 minute, and lignite dosage of 1.5gm. The results showed lignite coal reduced copper ions from its initial concentration of 187.67 mg/l to 38.37 mg/l while zinc was reduced from 147.45 mg/l to 88.73 mg/l. Their respective removal efficiency was 63.45% and 59.65%
Dissolution of carbides during the austenitizing of HSLA steels
Creators: name: Lee., Yong-Deuk
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Nonlinear Neumann problems driven by a nonhomogeneous differential operator
Creators: name: Bisci, Giovanni Molica
name: Repovš, Dušan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35A15, 35J20, 35J62

description: We study a nonlinear parametric Neumann problem driven by a nonhomogeneous quasilinear elliptic differential operator $\operatorname{div}(a(x,\nabla u))$, a special case of which is the $p$-Laplacian. The reaction term is a nonlinearity function $f$ which exhibits $(p-1)$-subcritical growth. By using variational methods, we prove a multiplicity result on the existence of weak solutions for such problems. An explicit example of an application is also presented.
Energy conversion by surface-tension driven charge separation
Creators: name: Pini, Cesare
name: Baier, Tobias
name: Dietzel, Mathias
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: In this work, the shear-induced electrokinetic streaming potential present in free-surface electrolytic flows subjected to a gradient in surface tension is assessed. Firstly, for a Couette flow with fully resolved electric double layer (EDL), the streaming potential per surface stress as a function of the Debye parameter and surface potential is analyzed. By contrast to the Smoluchowski limit in pressure-driven channel flow, the shear-induced streaming potential vanishes for increasing Debye parameter (infinitely thin EDL), unless the free surface contains (induced) surface charge or the flow at the charged, solid wall is permitted to slip. Secondly, a technical realization of surface-tension induced streaming is proposed, with surface stress acting on the free (slipping) surfaces of a micro-structured, superhydrophobic wall. The streaming potential is analyzed with respect to the slip parameter and surface charge. Finally, the surface tension is assumed to vary with temperature (thermocapillarity) or with surfactant concentration (destillocapillarity). The maximal thermal efficiency is derived and compared to the Carnot efficiency. For large thermal Marangoni number, the efficiency is severely limited by the large heat capacity of aqueous solvents. By contrast, destillocapillary flows may reach conversion efficiencies similar to pressure-driven flow.
description: 16 pages, 6 figures
Development of Service Quality Indicator for Ethiopian Freight Railways
Creators: name: Fasil, Tadele
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2014

description: In this study I try to develop the specific item of the rail freight transportation of quality indicator model which help to monitor, control and improve their service and competiveness. Indicator of quality for any service organization is the decisive factor to create the difference and obtain competitive advantage. The purpose of the study is making a model for rail freight quality indicator may give the true picture about the short comings in Railway freight service. The current article is to give a partial overview about experts/ specialist, importer/ exporter and Freight transportation organization (company) survey results. This survey, conducted in the form of a questionnaire, asked respondents to assign priority levels to forty four items considered to be important in maintaining the quality of transportation services. The questionnaire for survey was prepared after thorough deep Preliminary literature study. To this end, based on the result of the survey, I carried out a factor analysis and attempt to reduce the number of variables. The data obtained from the respondents are entered in the software SPSS sheet for calculating the descriptive statistics. The study is based on empirical research. Moreover the questionnaire-based survey proved that the following items are regarded as most important for freight transportation. Those determinants are identified are Safety of cargoes during transportation, Regularity of cargo arrival, Just-in-time delivery, Security of carriages, Proper maintenance of the cargos, Availability of cargo handling equipment at loading points. The findings are useful and applicable to most of railway country and the research findings may be applicable for a new constriction of Ethiopian freight railways. Those important quality indicators have emerged as an important framework in Ethiopia rail freight transportation management. This framework can help define, monitor and manage high quality freight transportation opportunities.
Biophysical comparison of ATP-driven proton pumping mechanisms suggests a kinetic advantage for the rotary process depending on coupling ratio
Creators: name: Anandakrishnan, Ramu
name: Zuckerman, Daniel M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Subcellular Processes (q-bio.SC)
subject: FOS: Biological sciences

description: ATP-driven proton pumps, which are critical to the operation of a cell, maintain cytosolic and organellar pH levels within a narrow functional range. These pumps employ two very different mechanisms: an elaborate rotary mechanism used by V-ATPase H+ pumps, and a simpler alternating access mechanism used by P-ATPase H+ pumps. Why are two different mechanisms used to perform the same function? Systematic analysis, without parameter fitting, of kinetic models of the rotary, alternating access and other possible mechanisms suggest that, when the ratio of protons transported per ATP hydrolyzed exceeds one, the one-at-a-time proton transport by the rotary mechanism is faster than other possible mechanisms across a wide range of driving conditions. When the ratio is one, there is no intrinsic difference in the free energy landscape between mechanisms, and therefore all mechanisms can exhibit the same kinetic performance. To our knowledge all known rotary pumps have an H+:ATP ratio greater than one, and all known alternating access ATP-driven proton pumps have a ratio of one. Our analysis suggests a possible explanation for this apparent relationship between coupling ratio and mechanism. When the conditions under which the pump must operate permit a coupling ratio greater than one, the rotary mechanism may have been selected for its kinetic advantage. On the other hand, when conditions require a coupling ratio of one or less, the alternating access mechanism may have been selected for other possible advantages resulting from its structural and functional simplicity.
Bolstering the Indian Child Welfare Act
Creators: name: Daprile, Olivia
Publisher: name: Unknown
Year: 2022

description: From 1960 through 1980, roughly 25–35 percent of Indigenous American children were removed from their families and placed in foster care, adoptive homes, or institutions, most of which were outside of their original communities and family systems. With the passage of the Indian Child Welfare Act (ICWA) of 1978, these numbers decreased, but contemporary studies conducted by the National Indian Child Welfare Association confirm there is still an alarming disproportionality of Indigenous children in foster care (NICWA, 2017). These high rates of family separation cause irreparable harm to Indigenous American communities in every state and can be traced to increased rates of poverty and mental illness, and a decrease in upward mobility and quality of life. This level of disproportionality is unacceptable but can be remedied with strengthened relationships between the Bureau of Indian Affairs (BIA) and state-level Departments of Children and Families through the implementation of a formalized Department of Indigenous American Child Welfare.
Simulating terahertz quantum cascade lasers: Trends from samples from different labs
Creators: name: Winge, David O.
name: Franckié, Martin
name: Wacker, Andreas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a systematic comparison of the results from our non-equilibrium Green's function formalism with a large number of AlGaAs-GaAs terahertz quantum cascade lasers previously published in the literature. Employing identical material and simulation parameters for all samples, we observe that discrepancies between measured and calculated peak currents are similar for samples from a given group. This suggests that the differences between experiment and theory are partly due to a lacking reproducibility for devices fabricated at different laboratories. Varying the interface roughness height for different devices, we find that the peak current under lasing operation hardly changes, so that differences in interface quality appear not to be the sole reason for the lacking reproducibility.
description: 9 pages, 6 figures; section VI with 2 figures added in v2; accepted for publication in J. Appl. Phys
Development of Safety Control Structure of Addis Ababa Light Rail Transit, Using System –Theoretic Approach
Creators: name: Gemta, Kedjela
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: Light Rail Transit is drawing attention as an environmentally-friendly transportation mode, and is expected to be a solution for sociotechnical transportation issues in many societies. Currently, its market has been rapidly expanding all over the world. In the Ethiopia, the Ethiopian Railway Corporation (ERC) released a strategic vision to develop new LRTs in 2008, specifically focusing on two corridors, Ayat Adababay to Torhailoch and from Piazza (Areda Georgis) to Kaliti. With such rapid growth, safety is a growing concern in LRT projects; in fact, there have been two accidents over the past three years. In developing a new LRT system, it is crucial to conduct risk analysis based on lessons learned from these past accidents. Furthermore, for risk analysis of complex sociotechnical systems such as LRT systems, a holistic system-safety approach focusing not only on physical domains but also on institutional levels is essential. With these perspectives, this research proposes a new system-based safety Control methodology for complex sociotechnical systems. This methodology is based on the system safety approach, called STAMP (System-Theoretic Accident Model and Processes). As a case study, the proposed LRT project in the AA is analyzed by this methodology. This methodology includes steps of conducting STAMP-based accident analysis, developing a safety control model of the LRT system in the AA based on lessons learned from the analyzed accidents, with a specific focus on the institutional structure. Thus, this thesis research concludes with specific recommendations about safety management in the project in the LRT, making a point that the proposed methodology can be valuable for the actual project processes as a ―safety-guided institutional design‖ tool.
The Thermal Bath of de Sitter from Holography
Creators: name: Chu, Chong-Sun
name: Giataganas, Dimitrios
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the AdS/dS CFT correspondence and study the nature of the thermal bath of the de Sitter field theory using holography. Unlike the temperature of a thermal field theory in flat spacetime, the temperature of a superconformal field theory on de Sitter space is an integral part of the theory and leaves intact the conformal symmetry and supersymmetry. In the dual AdS side, there is no black hole. Instead we have cosmological expansion of the de Sitter factor. We consider a number of different observables, such as the entanglement entropy, two point correlation function, Wilson loops corresponding to static and spinning mesons in the field theory, and study their thermal properties using holography. The former two quantities have trivial temperature dependence due to conformal symmetry. We compute the energy of the quark anti-quark bound state for a static meson, as well as the energy and the angular momentum for a spinning meson. We find that there is a maximum distance, as well as a maximum spin for the latter case, beyond which the bound state become unstable. The temperature behavior of the physical quantities in these meson systems are similar to that of the usual thermal field theory with holographic black hole dual. With these examples, we show clearly how the field theory observables get their thermal properties from the bulk despite the absence of a black hole, with the role of the black hole horizon played by the cosmological expansion of the de Sitter factor of the AdS metric.
description: 1+26 pages, 12 figures
Sintering of metastable oxides
Creators: name: Lee., Dong-hi
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Assessment Of Pharmaceuticals Distribution System: The Case Of Pharmaceuticals Fund And Supply Agency (PFSA)
Creators: name: Teketel, Adimasu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Government of Ethiopia is focusing to avail pharmaceuticals at an affordable price,accessible to all citizens through pharmaceuticals fund and Supply agency.However the Ethiopian pharmaceuticals distribution system is constrained by weak distribution practices and weak fleet management. The objective of this studywas to assess the pharmaceuticals supply chain distribution system practices at PFSA.The study employed both quantitative and qualitative study approaches. Quantitative data was collected from 41 employees using self-administeredquestionnaires, whereas, interview questions were also used to collect qualitative data from the two directors and 31 Drivers.Descriptive data analysis method through the use of Statistical packages for social science (SPSS) version 20 software was used to analyze the data. Findings of the study showed that most of the employees perceived the following;warehousing and storage are moderately practiced however computerized system for inventory control to pick products was not fully implemented in the warehouses, availability of mechanical machines is very low. Location of some warehouses was not comfortable to load pharmaceuticals. They also agreed that fleet management of the agency has the following problems: global positioning system (GPS) was not in place, volume of the vehicles is not known,there is lowcoordination withreceiving health facilities. During transportation, pharmaceuticals were managed by drivers. Delivery document prepared as soon as they comes from hubs and health facilities, however there is limitations in that documents were not prepared considering to pick all products from a single warehouse. The study recommends that agency shall fully implement computerized system and use of mechanical machines in the warehouses. To control vehicles, PFSA shall apply GPS andperform volume determination for each vehicle. It is also recommended pharmacy professional shall handle when transporting pharmaceuticals. Over all, the entire agency is expected to work coordinatelywith receiving health facilities
Traffic Control Methods and Safety Assurance at 'Sebategna' Area –Level Crossing
Creators: name: Tesfu, Alemu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: Today railway transportation is one of the modern and basic transportation systems in developed countries due to its mass transportation system. But, rail-road level crossing related accidents are more dangerous than other transportation accidents in terms of loss of human life, injury, damage to railway property, severity and death rate etc. and there still remain level crossings requiring improvements. Since our country's railway system is modern type of railway system, this thesis assesses the modern type of traffic control systems that are used at level crossing in order to reduce the fatal accidents that could occur at these conflicting places in general and the 'Sebategna' area level crossing of the Addiss-Abeba Light Rail Transit (AA-LRT) in particular depending on the experiences of developed countries that use modern railway transportation. The main parameter in traffic control at level crossing is sight distance of a train from road users. So, various elements that have effects on determining the sight distance are stated, various mathematical equations of sight distances at different states of the road users are established depending on the stated elements, and particularly the sight distances for different road users of the 'Sebategna' area level crossing i.e. position of control sensors and distance of the block sections near the level crossing are determined, appropriate traffic control systems i.e. signals, signs and road markings are selected and displayed graphically using AutoCAD software. The results of this thesis shows carefully selected fail-safe type of active control systems along with signs and road markings is necessary in order to achieve safe, reliable, and efficient traffic control and safety assurance at the 'Sebategna' area level crossing. So, this thesis can help to the Ethiopian Railway Corporation and other sectors as an instrument in designing traffic control systems at level crossings.
Web Archive Research Skills and Tools Survey (WARST)
Creators: name: Brügger, Niels
Publisher: name: Zenodo
Year: 2023

description: Plenary session by WG3: Helena Byrne, Sharon Healy, Olga Holownia, Michael Kurzmeier and Jason Webber,
 Aarhus Autumn Meeting 2021, Thursday 4 November
A correlation between chemistry, polarization and dust properties in the Pipe Nebula starless core FeSt 1-457
Creators: name: Juárez, Carmen
name: Girart, Josep M.
name: Frau, Pau
name: Palau, Aina
name: Estalella, Robert
name: Morata, Oscar
name: Alves, Felipe O.
name: Beltrán, Maria T.
name: Padovani, Marco
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Pre-stellar cores within molecular clouds provide the very initial conditions in which stars are formed. We use the IRAM 30m telescope and the PdBI to study the chemical and physical properties of the starless core FeSt 1-457 (Core 109), in the Pipe nebula. We fit the hyperfine structure of the N2H+(1-0) IRAM 30m data. This allow us to measure with high precision the velocity field, line widths and opacity and derive the excitation temperature and column density in the core. We use a modified Bonnor-Ebert sphere model adding a temperature gradient towards the center to fit the 1.2 mm continuum emission and visual extinction maps. Using this model, we estimate the abundances of the N2H+ and the rest of molecular lines detected in the 30 GHz wide line survey performed at 3 mm with IRAM 30m using ARTIST software. The core presents a rich chemistry with emission from early (C3H2, HCN, CS) and late-time molecules (e.g., N2H+), with a clear chemical spatial differentiation for nitrogen, oxygen and sulphurated molecules. For most of the molecules detected (HCN, HCO+, CH3OH, CS, SO, 13CO and C18O), abundances are best fitted with three values, presenting a clear decrease of abundance of at least 1 or 2 orders of magnitude towards the center of the core. The Bonnor-Ebert analysis indicates the core is gravitationally unstable and the magnetic field is not strong enough to avoid the collapse. Depletion of molecules onto the dust grains occurs at the interior of the core, where dust grain growth and dust depolarization also occurs. This suggests that these properties may be related. On the other hand, some molecules exhibit asymmetries in their integrated emission maps, which appear to be correlated with a previously reported submillimetre polarization asymmetry. These asymmetries could be due to a stronger interstellar radiation field in the western side of the core.
description: 16 pages, 11 figures, accepted for publication in A&A
Investigation on the Performance of Train Timetable for the Case of Addis Ababa Light Rail Transit
Creators: name: Tekle, Haylekiros
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: Currently, the AA-LRT system operation is in its initial phase. Hence, most operations are working in their lower level such as the speed, headway time and line capacity. But still, this is reasonable in order to familiarize with the system for gaining experience in the process and to grow up step by step to its higher performance level. One of the most decisive elements to have a good performance in a railway operation is the train timetable. With a good train timetable: the train can go faster, more frequently, more safely with efficient service to the passengers and with optimal use of the available resources. So that, investigating and studying of the current train timetable specifically for the newly operated AA-LRT timetable has a fundamental importance to design a new train timetable with better quality. In this thesis, the main parameters which have a big influence on the design of train timetable are picked out. To mention some of them: the headway time, dwell time, trip time, speed, braking distance, synchronization of trains and other available resources. So that, these parameters are discussed in detail and their values are calculated. Based on these calculated results, comparisons between the current timetable and the obtained parameters are done. Consequently, from the comparison results the optimal values are to be taken to design the new timetable. To check the validation of those calculated values, simulating software called Arena is used. In the Arena software parameters like headway, dwell time, speed, synchronization time, the number of trains and safety block are used as inputs. When those parameters are simulated, it runs correctly and gives valid result including visualizing animation to show the real traffic movement. So that, from the output of the simulation a decision is made for each parameter to compare with the existing timetable and to give an attention to their effect on the design of the timetable. Finally based on the calculated values and simulating results a better result for the main parameters of the timetable is found such as for the current speed a headway time of 7.5 minutes should be used and for the current available number of trains a speed of 30km/h with headway of 5.55 minutes are the optimal values.
The vortex-induced vibrations of tethered bodies
Creators: name: Lee., Hyeok
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Differences in production, carbon stocks and biodiversity outcomes of land tenure regimes in the Argentine Dry Chaco
Creators: name: Marinaro, Sofía
name: Grau, H. Ricardo
name: Gasparri, Nestor Ignacio
name: Kuemmerle, Tobias
name: Baumann, Matthias
Publisher: name: Humboldt-Universität zu Berlin
Year: 2017
Subjects: subject: conservation of biodiversity
subject: farming
subject: forest biomass
subject: indigenous communities
subject: neotropical dry forests
subject: protected areas
subject: zoning
subject: 690 Bau von Gebäuden

description: Rising global demand for agricultural products results in agricultural expansion and intensification, with substantial environmental trade-offs. The South American Dry Chaco contains some of the fastest expanding agricultural frontiers worldwide, and includes diverse forms of land management, mainly associated with different land tenure regimes; which in turn are segregated along environmental gradients (mostly rainfall). Yet, how these regimes impact the environment and how trade-offs between production and environmental outcomes varies remains poorly understood. Here, we assessed how biodiversity, biomass stocks, and agricultural production, measured in meat-equivalents, differ among land tenure regimes in the Dry Chaco. We calculated a land-use outcome index (LUO) that combines indices comparing actual vs. potential values of 'preservation of biodiversity' (PI), 'standing biomass' (BI) and 'meat production' (MI). We found land-use outcomes to vary substantially among land-tenure regimes. Protected areas showed a biodiversity index of 0.75, similar to that of large and medium-sized farms (0.72 in both farming systems), and higher than in the other tenure regimes. Biomass index was similar among land tenure regimes, whereas we found the highest median meat production index on indigenous lands (MI = 0.35). Land-use outcomes, however, varied more across different environmental conditions than across land tenure regimes. Our results suggest that in the Argentine Dry Chaco, there is no single land tenure regime that better minimizes the trade-offs between production and environmental outcomes. A useful approach to manage these trade-offs would be to develop geographically explicit guidelines for land-use zoning, identifying the land tenure regimes more appropriate for each zone.
On the Supersymmetric Extension of Gauss-Bonnet like Gravity
Creators: name: Concha, P. K.
name: Ipinza, M. C.
name: Ravera, L.
name: Rodríguez, E. K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explore the supersymmetry invariance of a supergravity theory in the presence of a non-trivial boundary. The explicit construction of a bulk Lagrangian based on an enlarged superalgebra, known as $AdS$-Lorentz, is presented. Using a geometric approach we show that the supersymmetric extension of a Gauss-Bonnet like gravity is required in order to restore the supersymmetry invariance of the theory.
description: v4, 13 pages, version accepted for publication in JHEP
การประเมินมูลค่าเศรษฐศาสตร์ป่าชุมชนเฉลิมพระเกียรติบ้านควนยูง จังหวัดสุราษฎร์ธานี
Creators: name: มโนลี ศรีเปารยะ เพ็ญพงษ์
Publisher: name: คณะเทคโนโลยีการเกษตร มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2022
Subjects: ป่าชุมชน
ประเมินมูลค่า
เศรษฐศาสตร์

description: วารสารเกษตรพระวรุณ, 19, 2, 159-165
The enigma of environmental organoarsenicals: Insights and implications
Creators: name: Xue, Xi-Mei
name: Xiong, Chan
name: Yoshinaga, Masafumi
name: Rosen, Barry
name: Zhu, Yong-Guan
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Computational Biology

description: Over 300 species of naturally occurring-organoarsenicals have been identified with the development of modern analytical techniques. Why there so many environmental organoarsenicals exist is a real enigma. Are they protective or harmful? Or are they simply by-products of existing pathways for non-arsenical compounds? Fundamental unanswered questions exist about their occurrence, prevalence and fate in the environment, metabolisms, toxicology and biological functions. This review focuses on possible answers. As a beginning, we classified them into two categories: water-soluble and lipid-soluble organoarsenicals (arsenolipids). Continual improvements in analytical techniques will lead to identification of additional organoarsenicals. In this review, we enumerate identified environmental organoarsenicals and speculate about their pathways of synthesis and degradation based on structural data and previous studies. Organoarsenicals are frequently considered to be nontoxic, yet trivalent methylarsenicals, synthetic aromatic arsenicals and some pentavalent arsenic-containing compounds have been shown to be highly toxic. The biological functions of some organoarsenicals have been defined. For example, arsenobetaine acts as an osmolyte, and membrane arsenolipids have a phosphate-sparing role under phosphate-limited conditions. However, the toxicological properties and biological functions of most organoarsenicals are largely unknown. The objective of this review is to summarize the toxicological and physiological properties and to provide novel insights into future studies.
Continuous rotation of achiral nematic liquid crystal droplets driven by heat flux
Creators: name: Ignés-Mullol, Jordi
name: Poy, Guilhem
name: Oswald, Patrick
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Suspended droplets of cholesteric (chiral nematic) liquid crystals spontaneously rotate in the presence of a heat flux due to a temperature gradient, a phenomenon known as Lehmann effect. So far, it is not clear whether this effect is due to the chirality of the phase and the molecules or only to the chirality of the director field. Here, we report the continuous rotation in a temperature gradient of nematic droplets of a lyotropic chromonic liquid crystal featuring a twisted bipolar configuration. The achiral nature of the molecular components leads to a random handedness of the spontaneous twist, resulting in the coexistence of droplets rotating in the two senses, with speeds proportional to the temperature gradient and inversely proportional to the droplet radius. This result shows that a macroscopic twist of the director field is sufficient to induce a rotation of the droplets, and that the phase and the molecules do not need to be chiral. This suggests that one can also explain the Lehmann rotation in cholesteric liquid crystals without introducing the Leslie thermomechanical coupling -- only present in chiral mesophases. An explanation based on the Akopyan and Zeldovich theory of thermomechanical effects in nematics is proposed and discussed.
Antistreptococcal and antistaphylococcal properties of cannabinoids: A systematic review
Creators: name: Niyangoda, Dhakshila
name: Thomas, Jackson
name: Tesfaye, Wubshet
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Chemicals and Drugs
subject: Medicine and Health Sciences
subject: cannabinoids
subject: cannabis
subject: medicinal cannabis

description: Antibacterial potential of cannabinoids had been studied immensely. A few narrative reviews highlighted the emerging antimicrobial properties of them. Therefore, this systematic review designed to evaluate the current evidence on the potential of cannabinoids, alone or in combination with other agents, against S. aureus, methicillin-resistant S. aureus (MRSA), vancomycin-resistant S. aureus (VRSA) and S. pyogenes.
Catalytic conversion of C₂ hydrocarbons using nickel catalysts
Creators: name: Lee., Woo Jin
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Opportunity and challenges in large-scale geothermal energy exploitation in China
Creators: name: Hu, Yuanan
name: Cheng, Hefa
name: Tao, Shu
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology

description: Under the significant pressure to diversify energy supply and reduce the dependence on fossil fuels, harnessing the vast geothermal resources has been made a priority in China’s renewable energy development plans. This review provided an overview on the development of geothermal power generation and direct use in China, identified the key barriers for geothermal energy utilization, particularly in power generation, and proposed corresponding measures for boosting the growth of geothermal industry. Little progress was made in geothermal power generation over the past decades, while geothermal direct use, particularly geothermal heat pumps (GHPs) and district heating, has been growing quickly. Development of geothermal power generation was primarily limited by the lack of high temperature hydrothermal resources near the major demand centers. A series of technological challenges associated with drilling under extremely high pressure and temperature conditions, transportation of heavy equipment, long-distance electricity transmission, and hot dry rock (HDR) exploitation, also hindered large-scale development of geothermal resources for power generation and district heating. There were no social barriers for geothermal exploitation except in hot spring tourism areas, while the high cost could limit the consumer acceptance of geothermal heating/cooling solutions. Significant investment in research and development of enhanced geothermal system (EGS) technologies for exploiting HDR resources and establishment of favorable policy instruments are recommended as key technological and policy measures to accelerate the growth of geothermal energy market, while the potential social barriers for the development EGS projects in the densely populated areas should also be recognized and mitigated in the future.
MPEC 2023-S105 : 2023 SX1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 SX1

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Needs Assessment of English Communication Skills Used by Shop Assistants, Food Sellers, and Service Providers in Muengthongthani
Creators: name: Krittika Ma-In
Publisher: name: Pransak Thonyeam3
Year: 2022
Subjects: Shop assistants
food sellers
service providers
foreign customers
service users

description: RICE Journal of Creative Entrepreneurship and Management, Vol.3, No.3, 1
Salient Factors Affecting Marketing Communication Performance
Creators: name: Nalinee Saengaran
Publisher: name: RICE Journal of Creative Entrepreneurship and Management
Year: 2022
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: PCA
subject: MLR
subject: basic conditions
subject: market conditions
subject: facilitation
subject: support industries

description: RICE Journal of Creative Entrepreneurship and Management, Vol.3, No.3, 15-22
The Highly Ionized Circumgalactic Medium is Kinematically Uniform Around Galaxies
Creators: name: Nielsen, Nikole M.
name: Kacprzak, Glenn G.
name: Muzahid, Sowgat
name: Churchill, Christopher W.
name: Murphy, Michael T.
name: Charlton, Jane C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The circumgalactic medium (CGM) traced by OVI $λλ1031, 1037$ doublet absorption has been found to concentrate along the projected major and minor axes of the host galaxies. This suggests that OVI traces accreting and outflowing gas, respectively, which are key components of the baryon cycle of galaxies. We investigate this further by examining the kinematics of 29 OVI absorbers associated with galaxies at $0.13 < z_{\rm gal} < 0.66$ as a function of galaxy color, inclination, and azimuthal angle. Each galaxy was imaged with HST and the absorption was detected in COS/HST spectra of nearby ($D<200$ kpc) background quasars. We use the pixel-velocity two-point correlation function to characterize the velocity spread of the absorbers, which is a method used previously for a sample of MgII absorber--galaxy pairs. The absorption velocity spread for OVI is more extended than MgII, which suggests that the two ions trace differing components of the CGM. Also contrary to MgII, the OVI absorption velocity spreads are similar regardless of galaxy color, inclination, and azimuthal angle. This indicates that the kinematics of the high ionization gas is not strongly influenced by the present star formation activity in the galaxy. The kinematic homogeneity of OVI absorption and its tendency to be observed mainly along the projected galaxy major and minor axes is likely due to varying ionization conditions and gas densities about the galaxy. Gas in intermediate azimuthal angles may be ionized out of the OVI phase, possibly resulting in an azimuthal angle dependence on the distribution of gas in higher ionization states.
description: 12 pages, 6 figures, 2 tables. Accepted for publication in The Astrophysical Journal on November 22nd, 2016