The influence of vehicle aerodynamic and control response characteristics on driver-vehicle performance

The effects of changes in understeer, control sensitivity, and location of the lateral aerodynamic center of pressure (c.p.) of a typical passenger car on the driver's opinion and on the performance of the driver-vehicle system were studied in a moving-base driving simulator. Twelve subjects with no prior experience on the simulator and no special driving skills performed regulation tasks in the presence of both random and step wind gusts

isplinjavanje zbog mehaničkog djelovanja na metale

In addition to spontaneous outgassing of materials and desorption stimulated by particles or photon bombardment, the gas release from mechanically affected materials was recently discovered as another source of gas in vacuum systems. Particularly, outgassing due to operations of manipulators and transmissions becomes a limitation in attaining low pressure in UHV systems used for production of semiconductor devices (e.g. MBE systems). Experiments are reported that were carried out to study gas release from metals when samples of metals were mechanically affected by rubbing the sample surface by another body or by deformation of the sample. Results of the experiments lead to the conclusion that gases dissolved in the metals and diffusing out when the sample is mechanically affected, represent the main source of the released gases. Adsorbed gases are released by mechanical treatment, too, but in much smaller amount. Mass spectroscopic analysis showed that tribochemical reactions among released gases, residual gases and material of the sample took place on the rubbed surface providing new gases into vacuum.Pored isplinjavanja iz raznih materijala i desorpcije stimulirane česticama ili fotonima, nedavno je otkriveno isplinjavanje metala zbog mehaničkog djelovanja, koje je također izvor plinova u vakuumskim sustavima. Posebice, isplinjavanje zbog rada manipulatora i prijenosa uzrokuje ograničenje tlaka u ultravakuumskim sustavima. Proučavano je isplinjavanje iz površina metala zbog tarenja i zbog deformacija. Glavni uzrok otpuštanja plinova je izlaženje otopljenih plinova koji difundiraju kada se mehanički djeluje na metal. Adsorbirani se plinovi također otpuštaju, ali mnogo manje

Observational insights on relationships between bicycle infrastructure and cyclist demographics, safety gear and bike use in Stavanger.

Norway has ambitious plans to reduce private car use, both for the benefits of reduced emissions and to mitigate their space consuming impacts on roadways and in cities. In conjunction with these plans, a high target has been set for increased bicycle mode share across Norway’s major urban regions. In Stavanger this has translated into increased investment in the facilitation of cycling for transport, including the expansion and improvement of bicycle infrastructure. Although, what cyclists perceive as safe and attractive bicycle infrastructure can vary widely, based on factors such as experience level, age and gender. One example is, that a stronger preference towards infrastructure with a greater level of separation between motorized vehicles and cyclists, has been found in both women and older adult cyclists. Through observations of cyclists at twelve locations and three different infrastructure typologies in Stavanger, this thesis seeks to provide insight on the possible influence of bicycle infrastructure on the proportion of cyclists of different genders and age groups. The proportion of cyclists which use safety gear, sport clothing and e-bikes are also a focus of the analysis. These variables are of relevance, as research has highlighted that cities which have safer and more separated infrastructure, often also have more normalized cycling cultures and cyclists which less often use safety gear and sport clothing. While e-bike users often have different infrastructure preference and choice than that of conventional bike users. The infrastructure typologies which are compared, have been selected on the basis of the degree that they are separated from motorized vehicles. Although other infrastructural and environmental characteristics are also considered, including traffic volume, traffic speed, measure of centrality and density. The findings do not validate the assumptions made between the infrastructure characteristics of degree of separation and the variables considered. Although strong correlations are found between measures of traffic intensity and centrality at observation points and the proportion of women cyclists using the infrastructure. While other findings may point to a moderating effect of e-bikes on the proportion of women cyclists observed at more highly trafficked locations. Additionally, correlations between safety gear and sport clothing use and centrality are found which could be potentially related to two distinct types of cyclists found in Stavanger

PEMBELAJARAN MENGANALISIS UNSUR PEMBANGUN PUISI DENGAN MENGGUNAKAN MEDIA CARD PROBLEM PADA SISWA KELAS X SMA Al-QONA’AH BALEENDAH TAHUN PELAJARAN 2017/2018

Puisi merupakan bentuk paling tua dari kesusastraan dalam sejarah peradaban manusia. puisi adalah salah satu karya sastra yang mempunyai nilai estetik (seni) yang tinggi dan berasal dari interpretasi pengalaman hidup manusia yang digubah dalam dalam wujud yang paling berkesan atau sebagai hasil imajinasi dan gagasan penyair yang dituangkan dalam bentuk tipografi yang spesifik. Media Card Problem adalah media pembelajaran yang digunakan guru dengan tujuan mengajak siswa menemukan konsep dan fakta melalui klasifikasi materi yang dibahas dalam pembelajaran dengan menggunakan kartu. Penulis tertarik melakukan penelitian mengenai pembelajaran menganalisis unsur pembangun puisi dengan menggunakan media card problem pada siswa kelas X SMA Al-Qona’ah Baleendah. Rumusan masalah yang penulis ajukan adalah; (1) Mampukah penulis merencanakan, melaksanakan, dan mengevaluasi pembelajaran menganalisis unsur pembangun puisi dengan menggunakan media card problem pada siswa kelas X SMA Al-Qona’ah Baleendah?; (2) Mampukah peserta didik melaksanakan pembelajaran menganalisis unsur pembangun puisi dengan tepat sesuai dengan unsur yang ada didalamnya?; (3) Efektifkah media card problem digunakan dalam pembelajaran menganalisis unsur pembangun puisi? Penelitian ini bertujuan untuk mengetahui kemampuan penulis, kemampuan peserta didik, dan keefektifan media card problem dalam pembelajaran menganalisis unsur pembangun puisi dengan menggunakan media card problem pada siswa kelas X SMA Al-Qona’ah Baleendah. Metode penelitian yang digunakan adalah metode eksperimen semu tipe one grup pretest-posttest design. Adapun hasilnya: (1) Penulis mampu merencanakan, melaksanakan, dan mengevaluasi pembelajaran menganalisis unsur pembangun puisi dengan menggunakan media card problem pada siswa kelas X SMA Al-Qona’ah Baleendah; (2) Siswa kelas X SMA Al-Qona’ah mampu menganalisis unsur pembangun puisi; (3) Media card problem efektif digunakan dalam pembelajaran menganalisis unsur pembangun puisi dengan menggunakan media card problem pada siswa kelas X SMA Al-Qona’ah Baleendah. Berdasarkan hasil penelitian ini, penulis menyimpulkan bahwa Penelitian yang penulis laksanakan berhasil. Kata Kunci: pembelajaran, teks puisi, media card problem

The application of integral performance criteria to the analysis of discrete maneuvers in a driving simulator

The influence of vehicle transient response characteristics on driver-vehicle performance in discrete maneuvers as measured by integral performance criteria was investigated. A group of eight ordinary drivers was presented with a series of eight vehicle transfer function configurations in a driving simulator. Performance in two discrete maneuvers was analyzed by means of integral performance criteria. Results are presented

Poboljšana Beckerova vakuumska mjerka

The possibility to optimize the Becker\u27s design of the friction vacuum gauge "REVA\u27\u27 has been investigated. The basic part of the gauge "REVA\u27\u27 is a metal ribbon stretched across magnetic field as a string (ß" gauge). The vibration of the ribbon is excited by an alternating current. The amplitude of the vibration is determined from the induced voltage and stabilized by varying the supply current according to the damping produced by gas molecules. This principle is analogical to that of the usual Pirani gauge control. The magnetic induction in the area of the string is for the sensitivity of the string gauge as important as the temperature of the heated filament is important for the sensitivity of the Pirani gauge. The shape of the magnetic field has been optimized according to the computation, using a finite element method. In order to achieve sufficient mechanical accuracy necessary for the optimal properties, a bifilar arrangement was chosen.Vibracije trake razapete u magnetskom polju uzbude se izmjeničnom strujom. Amplituda vibracija se određuje i stabilizira pomoću induciranog napona. Veće gušenje uzrokovano trenjem molekula pri višem tlaku zahtijeva jaču uzbudu i to služi za određivanje tlaka. Radi poboljšanja mehaničke izvedbe i smanjenja osjetljivosti na vanjsko magnetsko polje, odabran je bifilarni sustav

Poboljšana Beckerova vakuumska mjerka

The possibility to optimize the Becker\u27s design of the friction vacuum gauge "REVA\u27\u27 has been investigated. The basic part of the gauge "REVA\u27\u27 is a metal ribbon stretched across magnetic field as a string (ß" gauge). The vibration of the ribbon is excited by an alternating current. The amplitude of the vibration is determined from the induced voltage and stabilized by varying the supply current according to the damping produced by gas molecules. This principle is analogical to that of the usual Pirani gauge control. The magnetic induction in the area of the string is for the sensitivity of the string gauge as important as the temperature of the heated filament is important for the sensitivity of the Pirani gauge. The shape of the magnetic field has been optimized according to the computation, using a finite element method. In order to achieve sufficient mechanical accuracy necessary for the optimal properties, a bifilar arrangement was chosen.Vibracije trake razapete u magnetskom polju uzbude se izmjeničnom strujom. Amplituda vibracija se određuje i stabilizira pomoću induciranog napona. Veće gušenje uzrokovano trenjem molekula pri višem tlaku zahtijeva jaču uzbudu i to služi za određivanje tlaka. Radi poboljšanja mehaničke izvedbe i smanjenja osjetljivosti na vanjsko magnetsko polje, odabran je bifilarni sustav

Carbohydrate response element binding protein, ChREBP, a transcription factor coupling hepatic glucose utilization and lipid synthesis

The ability of an organism to sense and store nutrients is vital to survival. The liver is the major organ responsible for converting excess dietary carbohydrate to lipid for storage. An elegant molecular pathway has evolved that allows increased glucose flux into hepatocytes to generate a signaling molecule, xylulose 5-phosphate, that triggers rapid changes in glycolytic enzyme activities and nuclear import of a transcription factor, ChREBP, which coordinates the transcriptional regulation of enzymes that channel the glycolytic end-products into lipogenesis. Further understanding of this metabolic cascade should provide insights on conditions such as fatty liver, obesity, and the metabolic syndrome