An integrated charge amplifier for a pyroelectric sensor

This paper presents an integrated charge amplifier that measures a small charge. This charge is generated by a pyroelectric detector. The charge amplifier consists of a single-stage c-annon source configuration with a passive feedback network. The charge amplifier has a bandwidth of 700 kHz and an output noise voltage of 20 nV Hz 1/2 at 1 kHz. A 2×2 integrated pyroelectric sensor based on VDF/TrFE copolymer has been realized. The voltage response of this sensor-amplifier is reported

A CASE STUDY OF LUNTIAN MULTI-PURPOSE COOPERATIVE IN BARANGAY LALAIG, TIAONG, QUEZON, PHILIPPINES: A VERTICAL INTEGRATION APPROACH

The Luntian Multi-Purpose Cooperative located in Tiaong, Quezon, Philippines. The Luntian Multi-Purpose cooperative focuses more on feed production as well as hog fattening. The LMC applied the vertical integration to develop the cooperative. They have their members as their primary costumers of their feeds. The cooperative’s business activity includes also meat shop, granting of production loan, micro-finance, mobilization of saving deposits, aside from feed milling and hog fattening. Different agencies, industry organizations and private institutions provide trainings, seminars, assistance, as well as credit for the cooperative.The aims of the study was to determine the present and discuss a noteworthy business issue (s) of Luntian Multipurpose Cooperative, evaluate the business environment prevailing at a particular time of this case , assess the cooperative’s performance in terms of the four business functions , define the problem relevant to the business issue(s) being studied. The study used primary and secondary data. Primary data were gathered through interviews with the key personnel, managers, and other informants of the Luntian Multipurpose Cooperative in order to obtain responses regarding the overall status of the cooperative including its problem and plans. Secondary data were taken from files and documents, especially the history, background information and financial statements. Other data were taken through research materials such as book, unpublished special problems and from some government institutions. The recommendation of this research showed that Luntian MPC should engage in establishing a communal farm as to become the primary source of hybrid piglets that their members would raised. The alternatives solution was establishing a breeding farm that would ask for initial investment. Keywords: cooperative, vertical integration, case study, por

Catalist Performance of Syntetic Zeolite Zsm-5 – Al2o3 in Cracking Reaction of Palm Oil to Become Gasoline Fraction of Hydrocarbon

The requirement of fuel increases without balancing with its production causing the oil resources from fuel will immediately finished. Therefore, palm oil as renewable energy resources is selected for fuel production especially gasoline. Catalitic cracking process by using ZSM-5/Alumina catalys is selected in this research. The reaction was conducted in a simple fixed bed reactor with the pressure of 1.5 atm during half hour and WHSV 1,8 h-1 dan 2,4 h-1. The reaction result product then analyzed by using GC-FID for identify the gasoline fraction obtained, and FT-IR for identify the bonding kind of the samples. The baits used were pure palm oil, oxydized oil,POME (Palm Oil Methyl Esther), and oil with methanol. The parameters of the research were temperature (350 – 500 °C), catalist composition (5 - 20 %), and kinds of baits. The results showed that the composition of catalist 5% at reaction temperature of 400 °C with the bait of POME resulting the highest gasoline yield of 63,1%

Scientific Reasoning Ability of Prospective Student Teacher in the Excellence Program of Mathematics and Science Teacher Education in University of Mataram

The purpose of this study is to investigate the scientific reasoning ability of the prospective student teacher, and to analyze the difference in scientific reasoning ability between students in the study programs. The sample set consisted of 179 students joining the Excellence Program of Mathematics and Science Teacher Education in the Faculty of Teacher Education (FTE) in the University of Mataram. The Classroom Test of Scientific Reasoning (CTSR) was translated into Indonesian language and used to measure the student scientific reasoning ability. The results of this study revealed that 95.5% students had low reasoning ability and were categorized as concrete and transitional reasoner. Only few students (4.5%) reached the category of formal operational reasoner. In addition, significant differences of the students reasoning ability emerged among the third and the fifth semester students, as well as students in the four study programs

Komparasi Algoritma Multi Layer Perceptron dan Radial Basis Function untuk Diagnosa Penyakit Jantung

Neural network as a data mining model has many algorithms with different accuracy level. This research use UCI machine learning repository's data to compare the accuracy level of Multilayer Perceptron (MLP) and Radial Basis Function (RBF) algorithm in predicting the heart disease. Confusion matrix and the ROC (Receiver Operating Characteristic) curve method is used to measure the performance of the both algorithms. Based on the test results of the implementation, proved that the MLP algorithm has the higher value of accuracy than the RBF algorithm. Using the Confusion Matrix, the MLP algorithm has higher value of accuracy with 87.3% than the RBF algorithm with 81.1%. Using the ROC curve, the MLP algorithm also has higher AUC (Area Under the Curve) value with 0.949 than the RBF algorithm with 0.911. Using confusion matrix, the accuracy value of both algorthms are included as good classification, because the AUC value is in the range of 0.80 until 0.90. Using ROC Curve, the accuracy values are included as excellent classification, because the AUC value is in the range of 0.90 until 1.00

Social-Economic Immobility: a Study of Fishermen's Struggle Among Corporation Powers in the East Coast of Kalimantan, Indonesia

A majority of fishermen in the coastal areas of Bumi Seribu Nyiur Melambai, East Kalimantan, Indonesia, are migrants from other islands of Indonesia. This paper presents results from a research of the fisherman community. Most of the fisherman came from lower-middle-class families. Both lower-and lower-middle-class fisherman have access to the development program, aids and others resources delivered by government and International corporate. This paper describes how most fisherman see and believe that Bumi Seribu Nyiur Melambai is an area of battle for many actors to upscale their economic and social mobility through accumulation of wealth and social status. Many fishermen express the ambiguity, uncertainty, and marginality of their social-economic status. The marginal status is caused by (i) Long Story of Unequal Social Structure; (ii) elite capture of programs and aids (iii) uncertainty and the loss of fishing area due to the presence of the company; (iv) Their technology are not able to resist the change of seasons. Data in this research are collected by qualitative and quantitative method, such as a participatory observation, in-depth interview, FGD, and survey

Pengaruh Latihan Variasi terhadap Kemampuan Passing dan Stopping dalam Permainan Sepak Bola Klub Sman 1 Sabak Auh Kecamatan Sabak Auh Kabupaten Siak

Based on field observations conducted by researchers, that there are some problems or phenomena that occur in the game diklub SMAN 1 Sabak Auh, namely the lack of mastering technique of playing the ball. Such as passing and stopping in doing passing a lot of players make mistakes like not the right target, the ball is too slow and a lot of balls so that the ball did not get very easily taken up and controlled by the opponent. The purpose of this study was to determine the effect of exercise variations and Stopping Against Passing Ability Games Football Clubs In SMAN 1 Sabak Auh District Siak. The population in this study were as many as 16 people. The sampling technique is total sampling thus the sample in this study amounted to 16 people. Instruments used in this research is the ability of passing and stopping. Data were analyzed using t-test. Based uji- t produce tcount of 9.473 to 1.753 ttabel then H_a received, on the level of alpha (α) 0.05. It can be concluded that there is significant influence of exercise variations to the passing ability and stoping the game of football club SMA Negeri 1 Sabak Auh Subdistrict Siak. This suggests that the practice game this variation can be used to enhance the passing ability and stoping

In Vitro Fertility of Post-thawed Epididymal Ram Spermatozoa After Storage at 5 °C Before Cryopreservation

This study addressed the effects of storage duration of epididymides at 5 °C before sperm collection and their fertility after cryopreservation in vitro. Spermatozoa from one of the testes pairs were immediately collected, evaluated and frozen (control group). The remaining epididymides were cooled to 5 °C and stored for 24, 48, 72, and 96 h (experimental groups), after which spermatozoa were collected and frozen as in the control group. Before and after thawing, sperm motility, sperm viability and plasma membrane integrity were assessed. The fertilizing ability of frozen-thawed spermatozoa of each group was evaluated by in vitro fertilization of matured sheep oocytes. Sperm quality (sperm motility, viability, and plasma membrane integrity) at collection and after cryopreservation decreased as the duration of the epididymal storage interval increase (P < 0.05). The motility decreased steadily along the studied time periods. Although, the fertilizing ability of post-thawed epididymal spermatozoa gradually decreased as the storage period was prolonged, the spermatozoa collected from the cauda epididymides stored at 5 °C for up to 96 h were able to fertilize 16%-65% of oocytes in vitro. Results of the present study showed that ram epididymal spermatozoa survive in storage at 5 °C for up to 96 h. These spermatozoa maintain their fertilizing ability and may be suitable for use in IVF and other assisted reproductive procedures