Illumination methods for optical wear detection

The paper presents some results of a study on optical wear detection. The focus of the paper is on the illumination, to optimize the contrast of the images. Various illumination methods are compared: bright field versus dark field illumination, and various kind of light sources: laser light, diffuse light and ring-light

User Story Software Estimation:a Simplification of Software Estimation Model with Distributed Extreme Programming Estimation Technique

Software estimation is an area of software engineering concerned with the identification, classification and measurement of features of software that affect the cost of developing and sustaining computer programs [19]. Measuring the software through software estimation has purpose to know the complexity of the software, estimate the human resources, and get better visibility of execution and process model. There is a lot of software estimation that work sufficiently in certain conditions or step in software engineering for example measuring line of codes, function point, COCOMO, or use case points. This paper proposes another estimation technique called Distributed eXtreme Programming Estimation (DXP Estimation). DXP estimation provides a basic technique for the team that using eXtreme Programming method in onsite or distributed development. According to writer knowledge this is a first estimation technique that applied into agile method in eXtreme Programming

Sistem Koreferensial Klausa Subordinatif Bahasa Indonesia

This article focuses on the coreferential systems of the Indonesian subordinative clauses. The specific aims are to analyze the Indonesian language typology morphosyntactically, the morphological alteration that brings about the argument structures, and the coreferential behaviour. The data were taken from the Indonesian complex sentences taking the forms of the combination of: 1) intransitive clause and intransitive clause, 2) intransitive clause and transitive clause, 3) transitive clause and intransitive clause, and 4) transitive clause and transitive clause. The theory employed is the theory of typology proposed by Comrie (1988) modified by Artawa (2004). The result of the analysis showed that the Indonesian language does not belong to such language typologies as accusative, active, passive, ergarive, and antipassive; the morphological alteration of the verb can result in the argument structures of the clause taking the forms and marked with zero and personal pronoun; and the basic coreferential system of the Indonesian language may be in the forms of S = P in which A is different, and S = A in which P is different, while the derived systems, which are based upon the combination of clauses, are as follows: (1) S = S, (2) S = P, (3) S = A, (4) A = S, (5) P = S, (6) A = A, (7) A = P, and (8) P = A

Uji Tarik Hidrodinamikmodel Kapal Bersayap Wise Dengan Lambung Dasar Berstep

This paper describes hydrodynamic model tests of Wing in Surface Effect (WiSE) Craft. These craft was fitted with stephull form in different location on longitudinal flat bottom (stepedhull planning craft) to determine the influences of sticking and porpoising motion performances. These motions are usually occured when the craft start to take-off from water surfaces. The test models with scale of 1 : 7 were comprised of 4 (four) stephull models and 1 (one) non-stephull model as a comparative study. The hydrodynamic tests were performed with craft speed of 16 – 32 knots (prototype values) in Towing Tank at UPT. Balai Pengkajian dan Penelitian Hidrodinamika (BPPH), BPPT, Surabaya. The resistance (drag) was measured by dynamo meter and the trim of model (draft changing at fore and aft of model due to model speed) was measured by trim meter. By knowing the value of model trim, the wetted surface area can be determined. Then, the lift forces were calculated based on these measured values. The model test results were presented on tables and curves. Test results show that models with step located far away from center of gravity of the WiSE craft tend to porpoising and sticking condition, except if the step location on the below of these center of gravity. While model without step tends to sticking conditions

Kajian Potensi Pertumbuhan Karkas Kambing Kejobong Berdasarkan Persamaan Alometrik Huxley

Penelitian bertujuan untuk mengevaluasi produksi karkas kambing lokal khas Kejobong berdasarkan umur dan bobot potong. Metode penelitian berupa survai di tempat pemotongan kambing di Desa Nangkod, Kecamatan Kejobong, Kabupaten Purbalingga. Materi penelitian berupa 50 ekor kambing lokal Kejobong betina. Sampel ternak yang digunakan diambil secara acak sederhana. Data yang diperoleh dianalisis secara deskriptif untuk menggambarkan karakteristik fisik dan produksi karkas yang dihasilkan. Analisis regresi berganda digunakan untuk menentukan hubungan antara umur dan bobot potong terhadap karkas yang dihasilkan. Potensi pertumbuhan karkas dianalisis dengan persamaan Alometrik Huxley. Hasil penelitian menunjukkan bahwa umur berpengaruh tidak nyata (P>0,05) terhadap bobot dan persentase karkas, sedangkan bobot potong berpengaruh nyata (