2020 ◽  
Vol 6 (2) ◽  
pp. 439-448
Author(s):  
Fadilah Umar
Keyword(s):  

Penelitian ini bertujuan untuk mengetahui pengaruh model latihan UMAC-CPF dalam meningkatkan kelincahan pemain Tim Cerebral Palsy Football Indonesia Asean Paragames Philippines 2020. Rancangan penelitian dengan one group pretest-posttest design menggunakan metode penelitian pre-experimental. Sampel penelitian semua atlet sepakbola cerebral palsy Tim Indonesia Asean Paragames 2020 yaitu 14 orang. Data dikumpulkan dengan instrument Arrow Head Test. Teknis analisis data uji-t dengan taraf signifikansi 5%. Hasil analisis data menunjukkan bahwa model latihan  UMAC-CPF secara signifikan meningkatkan kelincahan pemain dengan nilai thitung sebesar 9.169, sehingga dapat disimpulkan bahwa model latihan UMAC-CPF layak digunakan untuk meningkatkan kelincahan Pemain Tim CP Football Indonesia Asean Paragames Philippines 2020. Diharapkan penelitian ini dapat dikembangkan oleh peneliti lain dengan melibatkan faktor lain seperti kecepatan, power, dan daya tahan.


2020 ◽  
Vol 20 (2) ◽  
pp. 101-109 ◽  
Author(s):  
Andrews Boakye ◽  
Rafui King Raji ◽  
Pibo Ma ◽  
Honglian Cong

AbstractThis research investigates the compressive property of a novel composite based on a weft-knitted auxetic tube subjected to a quasi-static compression test. In order to maximize the influence of the fiber content on the compression test, a Kevlar yarn was used in knitting the tubular samples using three different auxetic arrow-head structures (i.e. 4 × 4, 6 × 6 and 8 × 8 structure). A quasi-static compression test was conducted under two different impact loading speeds (i.e. 5 mm/min and 15 mm/min loading speed). The results indicate that the energy absorption (EA) property of the auxetic composite is highly influenced by the auxeticity of the knitted tubular fabric.


1965 ◽  
Vol 11 ◽  
pp. 46-49
Author(s):  
N. IKEDA ◽  
K. KAWAGUCHI ◽  
Y. HIROSE ◽  
H. SAKATA ◽  
T. ITAYAMA ◽  
...  

Author(s):  
Dennis Harding

In recent years the issue of violence in Iron Age society has become polarized between those who believe that it was endemic and those who believe that it has been exaggerated, particularly by conventional stereotypes of ‘warrior Celts’ based on classical and Irish literary sources. Currently, the ‘postprocessual consensus that dominates academic archaeology in the United Kingdom retains, as its default position, a more or less pacifist view of the prehistoric past’ (Armit, 2011: 503). The conventional interpretation of ‘war cemeteries’ and ‘massacre sites’ in hillforts especially may have been unduly simplistic, and it is these therefore that we shall consider first. The archetypal Iron Age war cemetery was that excavated by Wheeler (1943) in the eastern entrance at Maiden Castle, Dorset, where several skeletons bore traces of physical trauma compatible with the sack of the hillfort by Vespasian’s Second Augustan legion. An adult male in grave P7A had an iron arrow-head buried in his spine, and another adult male in grave P7 had a small, square perforation through the left temporal bone, consistent with a Roman ballista bolt. In some instances there were multiple injuries, notably skeleton P12 whose skull bore at least nine sword cuts, a measure of ‘overkill’ that reflected either the ferocity of the attack or systematic degradation after death. In reviewing the physical evidence for warfare in Iron Age Britain Knüsel (2005) divided instances of weapon trauma into three principal categories, those inflicted with a sharp-bladed weapon, such as a sword, those resulting from crushing from a blunt instrument, and wounds from a weapon or missile that penetrated the skeleton. The first two are essentially the same classification as those offered by Wheeler (1943: 351) for the Maiden Castle war cemetery. He too had raised the question whether the peri-mortem injuries apparent on some of the victims were the cause of death, or were inflicted after death.


Zootaxa ◽  
2019 ◽  
Vol 4551 (4) ◽  
pp. 479 ◽  
Author(s):  
SANKARAPPAN ANBALAGAN ◽  
SURULIYANDI VIJAYAN ◽  
SUNDARAM DINAKARAN ◽  
MUTHUKALINGAN KRISHNAN

Simulium (Gomphostilbia) kumbakkaraiense sp. n. is described based on adults, pupae and mature larvae from Kumbakkarai stream, in the Palani Hills of Western Ghats, South India. This new species is placed in the Simulium batoense species-group of the subgenus Gomphostilbia Enderlein. This new species is characterized by a scutum with three brownish-black longitudinal vittae and hind basitarsus in the female 5.3 times as long as wide, and in male the large facets of the upper eye in 13 vertical columns and 14 horizontal rows, the respiratory gill with short common basal in the pupa and postgenal cleft arrow-head-shaped in the larva. Taxonomic notes are provided to distinguish this new species from related species. [Zoobank register: http://zoobank.org/urn:lsid:zoobank.org:act:C575FB25-B6B2-414B-AE11-0468A1871DFA] 


The operational approach to linearized supersonic aerofoil problems is further developed. In particular, the method is extended to give a general treatment of the drag on swept-back wings at zero incidence. Problems involving the lift on swept-back wings are also considered, and a recurrence method developed for obtaining the lift on a trapezoidal wing with tips swept back beyond the Mach angle. As a particular case this latter method is applied to the arrow-head wing.


1982 ◽  
Author(s):  
V. Zakkay ◽  
V. Barra

An attempt to obtain a description of the coherent, or quasi-ordered structure of the turbulent boundary layer in the lateral direction at low and high velocity is presented in this paper. Simultaneous measurements of velocity, wall pressure and wall shear fluctuations at U∞ = 10, 22.4 and 206 m/sec have been analyzed to obtain a description of the so-called “turbulent burst.” A conditional sampling scheme has been applied to the digitized fluctuations to identify the occurrence of bursts, and their spread thereof in the lateral direction. The results for the lateral spread of the “bursts” indicate that the events can be separated into two groups with opposite phase relationship across the lateral measurements and is thought to be an indication of “arrow-head” or “horseshoe” type shape. The angular spread of the “horseshoe” may be estimated and therefore the angle of each “leg” which makes the x axis may be determined. These results lead to the conclusions that the flow structures at high velocities tend to be very narrow and swept back at, or near the wall and are much wider and flatter away from the wall.


1987 ◽  
Author(s):  
N Shibatay ◽  
K Tanaka ◽  
K Okamoto ◽  
T Onji

This study was done to clarify the intracellular dynamic arrangements of myosin(My) and actin(Ac) in activation process of human platelets (PLs) from unactivated to activated stage (clot retraction) in electron microscopy. The observation of unactivated PLs was done either in the fresh whole blood fixed directly with 0.1 % glutaraldehyde or in PLs isolated by gel filtration of platelet rich plasma(PRP) containing prostaglandin I2 (10 ng/ml). The isolated PLs mounted on a glass cover slip were used as activated PLs (adrerent ones). The contracted PLs were prepared in PRP incubated with thrombin (0.5 u/ml) and 20 mM CaCl- for 10-60 min. Treating PLs with 0.15 % Triton X-100 containing 0.05 % glutaraldehyde produced cytoskeleton. My and F-Ac were identified by an indirect immuno-cytochemical method using the specific antibody (rabbit IgG) against PL-My and protein A-gold and by demonstration of in “arrow-head” decoration by Ishikawa's method using skeletal meromyosin (HMM), respectively. [Results] (1) Unactivated PLs. Mys in monomer or oligomer distributed homogenously in scare association with cytoskeleton. Cytoskeletons were exclusively composed of F-Ac networks of crossolinked short filaments which were thinly distributed in the cytoplasm with partial connection to the cell membrance. (2) Surface activated spreading PLs. PLs adhered to the glass cover slip in dendritic forms. Mys were densely located around granulomere and formed linear arrays associated with F-Ac filaments of the cytoskeleton surrounding the granulomere and running straightly in cytoplasm. (3) Contracted PLs. Activated PLs protruded several filopodia in which networks or bundles of F-Ac filaments were found connecting to extracellular fibrin strand through cell membrene. Microfilaments formed arrow-head decoration with HMM pointing toward the cell body. The cytoskeleton in contracted PLs contained thick filaments of My-polymers attaching to F-Ac filaments end by end. It is concluded that the reorganization of Ac-My is the basis for the shape change, secretion and clot retraction of activated PLs.


2001 ◽  
Vol 687 ◽  
Author(s):  
Edward S. Kolesar ◽  
Matthew D. Ruff ◽  
William E. Odom ◽  
Simon Y. Ko ◽  
Jeffery T. Howard ◽  
...  

AbstractA new polysilicon surface micromachining technique for fabricating and assembling three- dimensional structures has been developed. Single-layer polysilicon elements and laminated polysilicon panels incorporating trapped-glass reinforcement ribs have been successfully fabri- cated on a silicon substrate with robust and continuous hinges that facilitate out-of-plane rotation and assembly. To realize a stable three-dimensional structure, one of the device's elevatable panel components is terminated with an array of open windows, and the mating rotatable element has a matched set of protruding arrowheads/microrivets with flexible barbs that readily flex to facilitate their joining and assembly. Because the arrowhead/microrivet barb tip-to-barb tip sepa- ration is larger than the opening in the mating window, the barbs flex inward as they pass through the open window and then expand to their original shape upon exiting the window, re- sulting in a permanently latched joint and a three-dimensional structure. Three novel arrow- head/microrivet designs have been micromachined to facilitate the latching process, including a simple arrowhead, a high-aspect ratio arrowhead, and a rivet-like structure with a hemispherical shaped cap and a flexible split shank.


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