Rabu, 01 Desember 2010

Group Nasyid Madani

Group Nasyid Pertama di Kota Banjar

Sejarah Singkat

Madany? Apa? Siapa?

Mmmmmmm.... bagi yang belum kenal, boleh dech...

Madany adalah akronim atau singkatan dari geMA DAkwah dan NasYid. Kami adalah salah satu (atau satu-satunya? :-) red) grup nasyid yang ada di kota Banjar.

Kami mulai eksis atau bahasa kerennya profesional kurang lebih 5 tahun yang lalu. Evolusi dari grup nasyid La Tansa dari SMAN 1 Banjar.

Madany mencoba menyuguhkan seni islami yang lebih plur dan dinamis. Kami tidak terpaku pada seni islami (khususnya seni suara) yang itu-itu saja (misalnya rebana red.), tetapi mencoba bagaimana orang-orang tertarik pada islam melalui seni kami.

Mulai dari acapella, yang menurut orang-orang masih asing atau aneh, karena kok bisa mulut mengeluarkan suara-suara yang digabungkan menjadi seperti musik, kemudian alat musik acoustic (gitar dan bass accoustic plus perkusi) menjadikan nasyid yang kami suguhkan bisa bermacam jenis musik. Ada ballad, bossa, smooth jazz, etnis, melayu, dsb.

Mudah-mudahan bagaimanapun cara kami menyampaikan akan selalu berada di jalan dakwah untuk mengajak kami khususnya selalu mengingat-Nya.
Salam Ta'aruf dari kami Madany.!! (Kang Erik)
Wassalam...

Minggu, 14 November 2010

Imfulsif

Evolusi Seneband

akhirnya melahirkan

Imfulsif

"mudah-mudahan kita bisa menjadi anak yang berbakti kepada orang tua...like ohm was said " There is no need a master plan, it's just a simple plan, but it's perfect.." nice quote, perfect to make them proud - amin
~Dhd&Riki~

Impulsivity

Orbitofrontal cortex, part of the prefrontal cortex

Impulsivity (or impulsiveness) is a personality trait characterized by the inclination of an individual to initiate behavior without adequate forethought as to the consequences of their actions, acting on the spur of the moment. Eysenck and Eysenck related impulsivity to risk-taking, lack of planning, and making up one's mind quickly. Impulsivity has been shown to be a major component of various neuropsychiatric disorders such as ADHD, substance abuse disorders and bipolar disorder. Impulsivity has been shown to have a genetic component and may be inheritable. Abnormal patterns of impulsivity may also be an acquired trait as a result of various neurodegenerative diseases, traumatic brain injury (TBI), hypoxic ischemic encephalopathy, intrauterine hypoxia, bacterial or viral infections or neurotoxicity as a result of chemical exposure. The orbitofrontal cortex and right inferior frontal gyrus have been shown to play a part in impulse control.^[1]^[2]^[3]

As a personality trait, impulsivity is part of normal behavior as it contributes to adaptive functioning. To do something and not be aware, especially for young children, is relatively common. Recent psychological research has suggested that there are various facets of impulsivity.^[4] Some researchers have proposed a 3-factor model according to impulsivity; attentional ("getting easily bored"), motor ("going into action") and cognitive ("inability to plan") factors. Recent theories^[5] have suggested five separate aspects of impulsivity:^[6]

Positive urgency; the tendency to act rashly while in a positive mood.
Negative urgency; the tendency to act rashly while in a negative mood.
Lack of premeditation; the inability to anticipate the future consequences of actions.
Lack of perseverance; the inability to follow through on a task
Sensation-seeking; the experience of positive feelings towards risky actions.

Psychometric tests for impulsivity

Lifetime History of Impulsive Behaviors; a self-report questionnaire of the lifetime prevalence of impulsive behavior.^[7]
UPPS Impulsive Behavior Scale (Whiteside and Lynam; 2001); a 45-item self-report questionnaire which distinguishes four facets of impulsivity: urgency, lack of premeditation, lack of perseverance, and sensation-seeking. It is scored on a 4-point scale from Strongly Agree to Strongly Disagree.^[8]
- UPPS-P Impulsive Behavior Scale (UPPS-P); a revised version of the UPPS is a 59-item self-report questionnaire that adds an additional factor, "positive urgency".^[9]
- UPPS-R Interview (UPPS-R); Semi-structured interview format for UPPS-P Impulsive Behavior Scale.
Barratt Impulsiveness Scale; a 30-item self-report questionnaire.^[10]

References

^ Corsini, Raymond Joseph, 1999, The Dictionary of Psychology, Psychology Press, ISBN 158391028X, p. 476.
^ Berlin HA, Rolls ET, Kischka U. Impulsivity, time perception, emotion and reinforcement sensitivity in patients with orbitofrontal cortex lesions. Brain. 2004 May;127(Pt 5):1108-26. Epub 2004 Feb 25. PMID 14985269
^ Salmond CH, Menon DK, Chatfield DA, Pickard JD, Sahakian BJ. Deficits in decision-making in head injury survivors.J Neurotrauma. 2005 Jun;22(6):613-22. PMID 15941371
^ Varieties of impulsivity, J.L. Evenden, Psychopharmacology, 1999, Volume 146, Number 4.
^ Whiteside SP, Lynam DR. The Five Factor Model and impulsivity: Using a structural model of personality to understand impulsivity. Pers Indiv Differ 2001; 30: 669-89.
^ Emotion-based Dispositions to Rash Action: Positive and Negative Urgency Melissa A. Cyders and Gregory T. Smith. Article
^ Schmidt CA, Fallon AE, Coccaro EF. Assessment of behavioral and cognitive impulsivity: development and validation of the Lifetime History of Impulsive Behaviors Interview. Psychiatry Res. 2004 Apr 30;126(2):107-21. PMID 15123390
^ Whiteside SP, Lynam DR. Understanding the role of impulsivity and externalizing psychopathology in alcohol abuse: application of the UPPS impulsive behavior scale.Exp Clin Psychopharmacol. 2003 Aug;11(3):210-7. PMID 12940500
^ Perales JC, Verdejo-Garcia A, Moya M, Lozano O, Perez-Garcia M. Bright and dark sides of impulsivity: Performance of women with high and low trait impulsivity on neuropsychological tasks. J Clin Exp Neuropsychol. 2009 Apr 8:1-18. [Epub ahead of print] PMID 19358009
^ Patton JH, Stanford MS, Barratt ES. Factor structure of the Barratt impulsiveness scale. J Clin Psychol. 1995 Nov;51(6):768-74. PMID 8778124

Impulse (physics)

Classical mechanics

$\mathbf{F} = \frac{\mathrm{d}}{\mathrm{d}t}(m \mathbf{v})$
Newton's Second Law

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In classical mechanics, an impulse is defined as the integral of a force with respect to time. When a force is applied to a rigid body it changes the momentum of that body. A small force applied for a long time can produce the same momentum change as a large force applied briefly, because it is the product of the force and the time for which it is applied that is important. The impulse is equal to the change of momentum.

Mathematical derivation

Impulse I produced from time t₁ to t₂ is defined to be^[1]

$\mathbf{I} = \int_{t_1}^{t_2} \mathbf{F}\, dt$

where F is the force applied from $t 1$ to $t 2$ .

From Newton's second law, force is related to momentum p by

$\mathbf{F} = \frac{d\mathbf{p}}{dt}.$

Therefore

$\begin{align} \mathbf{I} &= \int_{t_1}^{t_2} \frac{d\mathbf{p}}{dt}\, dt \\ &= \int_{t_1}^{t_2} d\mathbf{p} \\ &= \Delta \mathbf{p}, \end{align}$

where Δp is the change in momentum from time t₁ to t₂. This is often called the impulse-momentum theorem.^[2]

As a result, an impulse may also be regarded as the change in momentum of an object to which a force is applied. The impulse may be expressed in a simpler form when both the force and the mass are constant:

$\mathbf{I} = \mathbf{F}\,\Delta t = m \,\Delta \mathbf{v} = \Delta\mathbf{p}$

where

F is the constant total net force applied,

Δt is the time interval over which the force is applied,

m is the constant mass of the object,

Δv is the change in velocity produced by the force in the considered time interval, and

m Δv = Δ(mv) is the change in linear momentum.

It is often the case that not just one but both of these two quantities vary.

In the technical sense, impulse is a physical quantity, not an event or force. The term "impulse" is also used to refer to a fast-acting force. This type of impulse is often idealized so that the change in momentum produced by the force happens with no change in time. This sort of change is a step change, and is not physically possible. This is a useful model for computing the effects of ideal collisions (such as in game physics engines).

Impulse has the same units (in the International System of Units, kg·m/s = N·s) and dimensions (M L T⁻¹) as momentum.

Impulse can be calculated using the equation

$\mathbf{F}\,\Delta t = \Delta p = mv_1 - mv_0 \,$

where

F is the constant total net force applied,

t is the time interval over which the force is applied,

m is the constant mass of the object,

v₁ is the final velocity of the object at the end of the time interval, and

v₀ is the initial velocity of the object when the time interval begins.

Notes

^ Hibbeler, Russell C. (2010), Engineering Mechanics, 12th edition, Pearson Prentice Hall, p. 222, ISBN 0-13-607791-9
^ See, for example, section 9.2, page 257, of Serway (2004).

Bibliography

Serway, Raymond A.; Jewett, John W. (2004). Physics for Scientists and Engineers (6th ed. ed.). Brooks/Cole. ISBN 0-534-40842-7.
Tipler, Paul (2004). Physics for Scientists and Engineers: Mechanics, Oscillations and Waves, Thermodynamics (5th ed. ed.). W. H. Freeman. ISBN 0-7167-0809-4.

External links

Dynamics

Sabtu, 06 November 2010

Masih Ada Waktu (Ebiet G Ade)

Bila masih mungkin kita menorehkan bakti

atas nama jiwa dan hati tulus ikhlas

Mumpung masih ada kesempatan buat kita

mengumpulkan bekal perjalanan abadi

ho ho ho du du du du du du

du du du du du du du ho ho ho ho

Kita pasti ingat tragedi yang memilukan

Kenapa harus mereka yang terpilih menghadap?

Tentu ada hikmah yang harus kita petik

Atas nama jiwa mari heningkan cipta

Kita mesti bersyukur bahwa kita masih diberi waktu

Entah sampai kapan, tak ada yang bakal dapat menghitung

Hanya atas kasihNya, hanya atas kehendakNya

Kita masih bertemu matahari

Kepada rumpun ilalang, kepada bintang gemintang

Kita dapat mencoba meminjam catatanNya

Sampai kapankah gerangan waktu yang masih tersisa?

Semuanya menggeleng, semuanya terdiam,

semuanya menjawab, "Tak mengerti."

Yang terbaik hanyalah segeralah bersujud

Mumpung kita masih diberi waktu

Kita mesti bersyukur bahwa kita masih diberi waktu

Entah sampai kapan, tak ada yang bakal dapat menghitung

Hanya atas kasihNya, hanya atas kehendakNya

Kita masih bertemu matahari

Kepada rumpun ilalang, kepada bintang gemintang

Kita dapat mencoba meminjam catatanNya

Sampai kapankah gerangan waktu yang masih tersisa?

Semuanya menggeleng, semuanya terdiam,

semuanya menjawab, "Tak mengerti."

Yang terbaik hanyalah segeralah bersujud

Mumpung kita masih diberi waktu

ho ho ho du du du du du du

du du du du du du du ho ho ho ho

ho ho ho du du du du du du

du du du du du du du ho ho ho ho

ho ho ho du du du du du du

du du du du du du du ho ho ho ho

ho ho ho du du du du du du

du du du du du du du ho ho ho ho

Senin, 01 November 2010

Ngupingkeun Suanten Musik

Listening to Music

Lecture 2 - Introduction to Instruments and Musical Genres

Overview:

This lecture provides an introduction to basic classical music terminology, orchestral instruments, and acoustics. Professor Wright begins with a brief discussion of the distinctions between such broad terms as "song" and "piece," briefly mentioning more specific terms for musical genres, such as "symphony" and "opera." He then moves on to describe the differences between a "motive" and a "theme," demonstrating the distinction between the two with the use of music by Beethoven and Tchaikovsky. Following this, he calls upon three guest instrumentalists on French horn, bassoon, and viola to give a brief performance-introduction to each instrument. He concludes the session with a discussion of acoustics, focusing on the concept of partials, and then brings the lecture to a close with commentary on Richard Strauss's tone-poem, Death and Transfiguration.

Reading assignment:

Wright, Craig. Listening to Music, chapter 5

Class lecture:

Credits:

Professor Wright's course contains copyrighted material, including portions of musical works, the use of which may not have been specifically authorized by the copyright owner. In making this content available, we have relied on fair use as provided for in section 107 of the United States Copyright Law. We make no representation that your use, reuse or remixing of this content will constitute fair use or that by using, reusing or remixing this content you will not infringe upon the rights of others. If you wish to use copyrighted material from this site for purposes that exceed fair use or wish to use such material in a manner that is not authorized under the applicable copyright law, you must request permission from the copyright owner.

Special thanks to Naxos, LLC for providing recordings from the Naxos Music Library for use in connection with the Open Yale Courses publication of Craig Wright's Listening to Music course. For specific credits, see:
Naxos Music Credits - Lecture 2 [PDF]

Rabu, 27 Oktober 2010

Ngupingkeun Suanten Musik

Listening to Music with Professor Craig Wright

About Professor Craig Wright

Craig Wright received the degree Bachelor of Music in piano and music history at the Eastman School of Music (1966) and a Ph.D. in musicology at Harvard (1972), and since 1973 has taught at Yale University where he is currently the Henry L. and Lucy G. Moses Professor of Music. At Yale, Wright's courses include his perennially popular introductory course "Listening to Music" and his selective seminar "Exploring the Nature of Genius." During the summers he has led several Yale Alumni tours to France, Germany, and Italy. Among his six books are Music and Ceremony at Notre Dame of Paris (1989), Music in Western Civilization (2005), Listening to Music (6th edition, 2011), and Listening to Western Music (2007). He is presently at work on a volume entitled Mozart's Brain: Exploring the Nature of Genius. In 2004 Wright was awarded the honorary degree Doctor of Humane Letters by the University of Chicago.

Lecture 1 - Introduction

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