scholarly journals Mechanical Performances of Typical Robot Feet Intruding into Sands

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1867
Author(s):  
Dianlei Han ◽  
Rui Zhang ◽  
Hua Zhang ◽  
Zhenyu Hu ◽  
Jianqiao Li
Keyword(s):  
Quartz Sand ◽  
The Other ◽  
Legged Robots ◽  
Spherical Particles ◽  
Particle Sizes ◽  
Resistive Force ◽  
The Media ◽  
Resistive Forces ◽  
Mechanical Performances ◽  
Particle Shapes

Four kinds of feet with typical structures, referred to as the hemispherical foot, the semicylindrical foot, the rectangular foot and the circular foot, respectively, were designed and manufactured to study the foot–terrain interaction mechanics for legged robots. Three kinds of quartz sand were selected to study how particle size, shape and compactness affected the physical properties of the substrate and the intrusion performance of mechanical feet. The media with smaller particle sizes had higher bulk densities and lower angles of stability, but no obvious rule was found for particle shapes of quartz sand with different sizes. The intrusion resistive forces and pressures of the hemispherical foot on these three kinds of quartz sand were all less compared with the other three mechanical feet. The particle disturbance areas and motion trends were compared under these four kinds of mechanical feet using discrete element method simulations. The intrusion resistive forces of these mechanical feet first increased and then decreased with the increasing particle sizes of the quartz sand. Moreover, the intrusion resistive forces of these mechanical feet on spherical particles were smaller compared with irregular particles. The corresponding resistive forces of the mechanical feet were characterized based on the compactness of the quartz sand. According to the intrusion test data, the classic pressure–sinkage model was modified, and the relationships between intrusion resistive force and mechanical foot depth were obtained.

Analisa Wacana Pemberitaan Kasus Korupsi E-KTP Pada Media Kompas.com Terhadap Pembentukan Opini Publik

2019 ◽  
Vol 4 (1) ◽  
pp. 1-19
Author(s):  
Neri Widya Ramailis ◽  
Dede Nopendri
Keyword(s):  
Mass Media ◽  
Social Control ◽  
The Other ◽  
Main Function ◽  
General Knowledge ◽  
Visual Method ◽  
The Public ◽  
The Media ◽  
Private Entrepreneurs

Discourse is a series of sentences that relate and connect one proposition with the other propositions to from a unity. The main function of the news is not to warn, instruct, and make the public stunned, the main function of the news is to inform and then it is upto the public to utilize the news. There are two ways for the news to be useful to the public, the first to effort news as general knowledge and the second to effort the news a tool of social control. E-Ktp corruption cases are one of the biggest corruption cases that occurered in Indonesia. Therefore, many mass media reported heavilly on E-Ktp corruption cases, one of which was the kompas.com. furthermore, to find out how the writer gets the source the writer gets the source of data and information the writer uses the criminology visual method and then analyzes it using criminology newsmaking theory. However, the results of this study illustrate that the aspect highlighted are those of actors suspected of being involved in E-Ktp corruption cases. Where the media only emphasizes one institution, namely the people’s representative council, even though in this case the involved parties are not only the legislature but case the involved parties are not only the legislature but also from various institutions such as the interior ministry, state-owned enterprises, and private entrepreneurs. In the aspect of media projection Kompas.com make the bulk of the news about E- Ktp corruption cases as news headline and a tranding topic.

‘Who is Sir Curtis Seretse?’: A Re evaluation of Black Representation in Sixties British Television

2014 ◽  
Vol 7 (3) ◽  
Author(s):  
Michael Ahmed
Keyword(s):  
The Other ◽  
Prime Time ◽  
Black Representation ◽  
Unique Representation ◽  
Prime Ministers ◽  
Highly Educated ◽  
Crime Dramas ◽  
The Media ◽  
The 1960S ◽  
Head Of Department

This paper re-evaluates the significance of Sir Curtis Seretse, a black character from the 1960s television series Department S (ITV 1969-70) which has largely been ignored. While earlier critical and academic discourse of Department S has primarily centred on the flamboyant Jason King, the importance of Seretse’s character has been overlooked. Seretse, as the head of Department S, is in a position of authority and power over the other (white) characters of the show. Furthermore, he represents a highly educated character that converses on equal terms with Prime Ministers and Presidents, a unique representation of a black character on British television at that time. Seretse’s appearance on prime time television, at a period when black performers in the media were invariably confined to little more than token characters, is therefore worthy of further attention. This paper examines how Seretse represents a different type of black character not previously seen on British television, when compared to the representations of racial problems on other television crime dramas.

Sports News, Commentary and Interviews, From the Other Side: Journalists Seen Through the Eyes of Athletes

2021 ◽  
pp. 216747952199237
Author(s):  
Ondřej Trunečka
Keyword(s):  
Athletic Performance ◽  
The Other ◽  
Professional Athletes ◽  
Main Role ◽  
Cast Doubt ◽  
The Media ◽  
Sports News

This study explores how professional athletes perceive sports journalists and the role of the media. They acknowledge that communication with journalists is an essential part of their profession and appreciate the verified information, knowledge, and dutiful preparation. They consider the main role of media as monitorial. In some cases, they cast doubt on journalists’ ability to evaluate athletic performance accurately, and they are also critical of errors in interviews, however they acknowledgethat there are good, and possibly excellent journalists as well.

scholarly journals Isolation and Characterization of Yeasts from Rumen Fluids for Potential Use as Additives in Ruminant Feeding

2021 ◽  
Vol 8 (3) ◽  
pp. 52
Author(s):  
Chanon Suntara ◽  
Anusorn Cherdthong ◽  
Metha Wanapat ◽  
Suthipong Uriyapongson ◽  
Vichai Leelavatcharamas ◽  
...  
Keyword(s):  
Incubation Time ◽  
Cellulase Activity ◽  
The Other ◽  
Pichia Kudriavzevii ◽  
Factor B ◽  
Yeast Strains ◽  
Randomized Design ◽  
Holstein Friesian ◽  
The Media ◽  
Completely Randomized Design

Saccharomyces cerevisiae is a yeast strain often used to improve the feed quality of ruminants. However, S. cerevisiae has limited capacity to provide biomass when inoculated with carbon sources and a low ability to produce cellulase enzymes. Here, we hypothesized that yeast in the rumen produces a large amount of biomass and could release cellulase enzymes to break down fiber content. Therefore, the aim of this study was to screen, isolate and identify yeast from the rumen fluids of Holstein Friesian steers and measure the efficiency of biomass production and cellulase activity. A fermentation medium containing sugarcane molasses as a carbon source and urea as a nitrogen source was optimized. Two fistulated–crossbred Holstein Friesian steers averaging 350 ± 20 kg body weight were used to screen and isolate the ruminal yeast. Two experiments were designed: First, a 12 × 3 × 3 factorial was used in a completely randomized design to determine biomass and carboxymethyl cellulase activity. Factor A was the isolated yeast and S. cerevisiae. Factor B was sugarcane molasses (M) concentration. Factor C was urea (U) concentration. In the second experiment, potential yeasts were selected, identified, and analyzed for 7 × 4 factorial use in a completely randomized design. Factor A was the incubation times. Factor B was the isolated yeast strains, including codes H-Khon Kaen University (KKU) 20 (as P. kudriavzevii-KKU20), I-KKU20 (C. tropicalis-KKU20), and C-KKU20 (as Galactomyces sp.-KKU20). Isolation was imposed under aerobic conditions, resulting in a total of 11 different colonies. Two appearances of colonies including asymmetric colonies of isolated yeast (indicated as A, B, C, E, and J) and ovoid colonies (coded as D, F, G, H, I, and K) were noted. Isolated yeast from the rumen capable of providing a high amount of biomass when inoculant consisted of the molasses 15% + urea 3% (M15 + U3), molasses 25% + urea 1% (M25 + U1), molasses 25% + urea 3% (M25 + U3), and molasses 25% + urea 5% (M25 + U5) when compared to the other media solution (p < 0.01). In addition, 11 isolated biomass-producing yeasts were found in the media solution of M25 + U1. There were 4 isolates cellulase producing yeasts discovered in the media solution of M25 + U1 and M25 + U5 whereas molasses 5% + urea 1% (M5 + U1), molasses 5% + urea 3% (M5 + U3), molasses 5% + urea 5% (M5 + U5), molasses 15% + urea 1% (M15 + U1), molasses 15% + urea 3% (M5 + U3), and M25 + U3 were found with 2, 3, 1, 2, 1, and 2 isolates, respectively. Ruminal yeast strains H-KKU20, I-KKU20, and C-KKU20 were selected for their ability to produce biomass. Identification of isolates H-KKU20 and I-KKU20 revealed that those isolates belonged to Pichia kudriavzevii-KKU20 and Candida tropicalis-KKU20 while C-KKU20 was identified as Galactomyces sp.-KKU20. Two strains provided maximum cell growth: P. kudriavzevii-KKU20 (9.78 and 10.02 Log cell/mL) and C. tropicalis-KKU20 (9.53 and 9.6 Log cells/mL) at 60 and 72 h of incubation time, respectively. The highest ethanol production was observed in S. cerevisiae at 76.4, 77.8, 78.5, and 78.6 g/L at 36, 48, 60, and 72 h of incubation time, respectively (p < 0.01). The P. kudriavzevii-KKU20 yielded the least reducing sugar at about 30.6 and 29.8 g/L at 60 and 72 h of incubation time, respectively. The screening and isolation of yeasts from rumen fluids resulted in 11 different yeasts being obtained. The potential yeasts discovered in the rumen fluid of cattle were Pichia kudriavzevii-KKU20, Candida tropicalis-KKU20, and Galactomyces sp.-KKU20. P. kudriavzevii-KKU20 had higher results than the other yeasts in terms of biomass production, cellulase enzyme activity, and cell number.

scholarly journals Analysis for Stroke Etiology in Duplicated/Accessory MCA-Related Cerebral Infarction: Two Case Report and Brief Literature Review

Diagnostics ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 205
Author(s):  
Kou Tsuyama ◽  
Nobukazu Miyamoto ◽  
Atsuhiko Shindo ◽  
Kenichiro Hira ◽  
Yuji Ueno ◽  
...  
Keyword(s):  
Cerebral Infarction ◽  
Clinical Course ◽  
The Other ◽  
Shearing Stress ◽  
Common Site ◽  
Arterial Diameter ◽  
Stroke Etiology ◽  
Proximal Site ◽  
The Media ◽  
Intracranial Arteries

Duplication and accessory of the middle cerebral artery (MCA) constitute a rare congenital variation. MCA anomalies are found at a lesser frequency than the vascular anomalies of the other major intracranial arteries. Duplicated/accessory MCA was usually noted incidentally with subarachnoid hemorrhage, due to resulted aneurysmal formation. However, duplicated/accessory MCA-related cerebral infarction is rarer. We report two cases of cerebral infarction due to dissection at the entry of the duplicate/accessory MCA. Both cases were similar in dissected site and clinical course, without headache or injury. In 20 previously reported cases and our two cases of duplicated/accessory MCA-related infarction, mean age (55.8 ± 21.2 years) was slightly younger for cerebral infarction, and stroke etiology was mainly embolism. The main etiologies of stroke were embolism and dissection. Considering embolism etiology, proximal site of arterial diameter changing lesion was a common site for embolism, as duplicated/accessory MCA was usually smaller than normal M1 segment. In cerebral dissection cases, the dissected site was similar to our cases. Numerous mechanisms of dissection were considered, but they mainly included dysfunction of the media and endothelium or shearing stress at the entry of duplication. As the detailed mechanisms of cerebral dissection remain unknown, clinicians should include a differential diagnosis for MCA dissection.

Theoretical Parameter Study of Aerodynamic Vectoring Particle Sorting

2007 ◽  
Vol 129 (7) ◽  
pp. 902-907 ◽  
Author(s):  
Dane N. Jackson ◽  
Barton L. Smith
Keyword(s):  
Density Ratio ◽  
Large Data ◽  
Flow Speed ◽  
Spherical Particles ◽  
Parameter Study ◽  
Particle Sizes ◽  
Case Scenario ◽  
Velocity Magnitude ◽  
Particle Sorting ◽  
Sorting Technique

A new particle sorting technique called aerodynamic vectoring particle sorting (AVPS) has recently been shown to be effective at sorting particles without particles contacting surfaces. The technique relies on turning a free jet sharply without extended control surfaces. The flow turning results in a balance of particle inertia and several forces (pressure, drag, added mass, and body forces) that depend on particle size and density. The present paper describes a theoretical study of particle sorting in a turning flow. The purpose of this study is to extend AVPS to parameter spaces other than those that are currently under investigation. Spherical particles are introduced into a turning flow in which the velocity magnitude increases like r. The trajectory of each particle is calculated using the particle equation of motion with drag laws that are appropriate for various Knudsen number regimes. Large data sets can be collected rapidly for various particle sizes, densities, turning radii, flow speeds, and fluid properties. Ranges of particle sizes that can be sorted are determined by finding an upper bound (where particles move in a straight line) and a lower bound (where particles follow flow streamlines). It is found that the size range of particles that can be sorted is larger for smaller turning radii, and that the range moves toward smaller particles as the flow speed and the particle-to-fluid density ratio are increased. Since this flow is laminar and 2-D, and particle loading effects are ignored, the results represent a “best case” scenario.

Literature, Media and Market

2021 ◽  
Vol 9 (8) ◽  
pp. 2176-2178
Author(s):  
Dr. Jnanee Debasish Mishra
Keyword(s):  
Daily Life ◽  
Great Influence ◽  
The Other ◽  
Media Ethics ◽  
Modern Times ◽  
Market Communication ◽  
The Media ◽  
Media Market

Synopsis: Literature is the medicine for man and civilization for years. It attracts and affects the soul and mind. In modern times transformation of media makes a big difference in human approach. Though Communication is the primary aim of media, but it works like a window of conscience. In the age of globalization the media has a great influence on society. Though market is an economical concept but our daily life is bound to rely upon it. And now literature, media and market remain in an inter related manner. One affects the other two. This analysis tries to find out the inter relationship among literature, media and market. Keywords: Literature, Media, Market, Communication, Globalization, Literary Sensibility, Media ethics, Change in media approach

scholarly journals Medieøkologien i SKAM

2017 ◽  
Vol 6 (2) ◽  
pp. 60-66
Author(s):  
Ruth Grüters ◽  
Knut Ove Eliassen
Keyword(s):  
Social Media ◽  
New Media ◽  
Historical Perspective ◽  
18Th Century ◽  
Media Ecology ◽  
The Other ◽  
Media Platform ◽  
The Media ◽  
Use Of Social Media ◽  
Media Practices

AbstractTo understand the success of SKAM, the series’ innovative use of “social media” must be taken into consideration. The article follows two lines of argument, one diachronic, the other synchronic. The concept of remediation allows for a historical perspective that places the series in a longer tradition of “real time”-fictions and media practices that span from the epistolary novels of the 18th century by way of radio theatre and television serials to the new media of the 21st century. Framing the series within the current media ecology (marked by the connectivity logic of “social media”), the authors analyze how the choice of the blog as the drama’s media platform has formed the ways the series succeeded in affecting and mobilizing its audience. Given the long tradition of strong pedagogical premises in the teenager serials of publicly financed Norwegian television, the authors note the absence of any explicit media critical perspectives or didacticism. Nevertheless, the claim is that the media-practices of the series, as well as the actions and discourses of its followers (blogposts, facebook-groups, etc.), generate new insights and knowledge with regards to the series’ form, content, and practices.

scholarly journals THE IMPLEMENTATION OF GAME TO INCREASE COURAGE CHILDREN TO SPEAKING ENGLISH IN DAHANREJO VILLAGE GRESIK

2021 ◽  
Vol 3 (1) ◽  
pp. 667
Author(s):  
Risca Hidayanti Qurani ◽  
Safira Dewi Kurnia ◽  
Henny Dwi Bhakti ◽  
Andi Rahmad Rahim ◽  
Sukaris Sukaris ◽  
...  
Keyword(s):  
Action Research ◽  
English Language ◽  
Language Skills ◽  
The Other ◽  
Teaching English ◽  
The Media ◽  
English Language Skills

This study aims to increase courage children to speaking English using implementation of game in Dahanrejo village, Kebomas, Gresik. The author as tutors and teachers for children in Dahanrejo village in this research. The problems refer to in Dahanrejo village, many children are afraid to speak English because there are no motivation to increase knowledge related studying English, therefore they have lack vocabulary and also teachers can’t explore the other media to teaching English in the classroom. The results of the action research given by the authors are the application of the media can improve the English language skills especially speaking of students and be able to provide variations in indoor learning that are not only fixed on the Package Books and Students Worksheets (LKS). Not only that, but the authors also found that the media was able to change the mood of students who did teaching through the media and were more interested in English.

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