Abstract Sumatra Island is an island located in the subduction zone of Indo-Australian plate towards Eurasia. The geological structure on Semangko Fault. There active volcanic activity, such as Bukit Barisan Mountains, which makes vulnerable to eruptions. study was conducted Lake Toba, North Sumatra, using earthquake data from IRIS station. purpose this investigate amplitude determining presenc...

Let E pq be the vertical homology Hg(E 0 p∗) of this complex. In other words, if Z pq = ker(d v pq), B pq = im(d v p,q+1), then E pq = Z 1 pq/B 1 pq. We note that d h induces maps E pq → E p−1,q as follows. The condition dd = −dd shows that d(Z pq) ⊆ Z p−1,q and d(B pq) ⊆ B p−1,q; therefore, there is a homomorphism d̃pq : E 1 pq → E p−1,q. Let E pq be the horizontal homology Hp(E ∗q) of this com...

The theory of frames normal for general connections on differentiable bundles is developed. Links with the existing theory of frames normal for covariant derivative operators (linear connections) in vector bundles are revealed. The existence of bundle coordinates normal at a given point and/or along injective horizontal path is proved. A necessary and sufficient condition of existence of bundle...

It is known that night-migratory songbirds use a magnetic compass measuring the magnetic inclination angle, i.e. the angle between the Earth's surface and the magnetic field lines, but how do such birds orient at the magnetic equator? A previous study reported that birds are completely randomly oriented in a horizontal north-south magnetic field with 0° inclination angle. This seems counter-int...

[1] A near-global ocean state estimate over the period 1992–2004 is used to study the mean seasonal cycle in sea level z. The state estimate combines most available observations, including all the altimetric missions, with a general circulation model in an optimization procedure. The annual cycle tends to be larger than the semi-annual one, except in tropical regions. For global mean z, annual ...

A lattice path P in Z is a path in the d-dimensional integer lattice Z which uses only points of the lattice, that is, it is a sequence (P0, P1, . . . , Pl), where Pi ∈ Z d for all i. The vectors −−→ P0P1, −−→ P1P2, . . . , −−−−→ Pl−1Pl are called the steps of P . The number of steps, l, is called the length of P , and denoted by l(P ). Figure 1 shows a lattice path in Z of length 11. (The hori...

When feature selection in mass spectrometry is based on single m/z values, problems arise from the fact that variability is not only in vertical but also in horizontal direction, i.e. also slightly differing m/z values may correspond to the same feature. Hence, we propose to use the full spectra as input to a classifier, but to select small groups -- or blocks -- of adjacent m/z values, instead...

Horizontal gaze palsy with progressive scoliosis (HGPS) is a rare, autosomal recessive disorder characterized by a congenital absence of conjugate horizontal eye movement, with progressive scoliosis developing in childhood or adolescence. The authors identified two unrelated consanguineous families with HGPS. Genomewide homozygosity mapping and linkage analysis mapped the disease locus to a 30-...

Relic neutrino νr light masses clustering in Galactic and Local Hot Dark Halos act as a beam dump calorimeter. Ultra High Energy ν, above ZeV, born by AGNs,GRBs at cosmic edges, overcoming the Greisen, Zatsepin, Kuzmin (GZK) cut-off, may hit near Z resonance and WW-ZZ channels energies: their showering into nucleons and γ Ultra High Cosmic Ray (UHECR) fit observed data. Any tiny neutrino mass s...