Analisis Perubahan Kemiringan Sudut Antena Terhadap Unjuk Kerja Perangkat Nanostation2 Loco (Ns2l) Pada Outdoor Hotspot System

Inclination is the angle formed by tilt angle to vertical line. This research determine the effect of tilt angle to the performance of the device, changes the quality, affordability and stability of connections. In addition, this research also presented the comparative performance of the device after tilt angle changed and find the optimal angle. This research, explained the change in angle of inclination generally affected the main lobe and back lobe in the antenna's beam of NanoStation2 Loco. Inclination angle also causes the signal strength and connection stability affected, especially on devices at distance over 100 m from the antenna. This research made changes three times to the antenna's tilt. There are 10 °, 20 ° and 30 °. From the angle change, the result indicates that the most effective use of research sites of the Faculty of Engineering, University Tanjungpura Pontianak is tilted at angle of 20°. This is proved by results of measuring Received Signal Strength Indicator and Packet Loss that be the main indicator to determine the quality of the antenna. From the data showed the measurement of signal strength under -90 dBm at distance over 100 m will lead the connection and stability to be poor connection. This situation is shown by the high number percentage of packet loss that occurs during pingtest. At the point of measurement locations under 100 m and minimum obstacle, change angles do not have a big impact and quality of the antenna is in excellent. In addition to the distance from the antenna, the obstacle factors (barriers of the building) is also a big influence on the quality of the antenna

2 D Modelling of Overpressure in the West Baram Delta, Sarawak

This project is entitled 2D modeling of overpressure in the West Baram Delta, Sarawak, and the focus is on the basin study, reservoir fluid pressure, petroleum system and geophysical method. The main objective for this project is to reconstruct overpressure history in West Baram Delta area, with the aid of basin modelling. The study carried out in two phases. In the first phase, model reconstruction was based on disequilibrium compaction as the overpressuring mechanism. In the second phase, additional contribution to the development of overpressure from hydrocarbon generation was investigated. The methodology employed in this study include: seismic time to depth conversion, I D modelling, pore pressure estimation and 2D Basin modelling. Based on seismic interpretation, the tectonics in the Baram Delta is shown very active as where many growth faults can be seen. This high tectonism in Baram Delta leads to shale diapirism. From I D modelling the modeled basal heat flow range from 25 m W /m2 to 53 m W /m2 The comparison of top overpressure suggest that in Well H is shallower, located at the depth of 1000 m, while the top of overpressure in Well 0 is at 1800 m. The 2D models have been calibrated with the observed pressure, temperature and vitrinite reflectance datasets. The calibrated heat flow for the 2D modelling ranges from 35mW/m2 to 53mW/m2 . From the modeled overpressure in 2D basin modelling, the onset of overpressure is estimated to occur at 3050 m. In Well P, the top of overpressure was occurs at 3048 m, in Well A4 the depth occurs at 3100 m, Well 0 at 2987 m and Well Hat 2682 m. In the first model of2D basin modeling, the disequilibrium compaction indicates that overpressure starts approximately at 3050 m. In the second model, which includes the hydrocarbon generation, the depth of overpressure does not seem to vary much from the first model. It is therefore concluded that the main origin of overpressure in the West Baram Delta is disequilibrium compaction. Hydrocarbon generation does not contribute significantly to the development of overpressure in the Baram Delta

Study on Adaptive Thermal Comfort, Natural Ventilation Effect, and Thermal Improvement in Nepalese School Buildings

東京都市大学博士（環境情報学）2022年度（令和4年）doctoral thesi

The Methodology of Benefit-Cost Analysis with Particular Reference to the CFC Program

This paper is a preliminary investigation of some critical concepts of allocative economics to determine the extent to which benefit-cost analysis of the CFC problem can make an economic contribution to the decision-making processes of society. If our conclusions are, in the main, correct, they will act inevitably to weaken the faith that can be reposed in a benefit-cost analysis or, at least, to restrict its range of application

Extension of the item pocket method allowing for response review and revision to a computerized adaptive test using the generalized partial credit model

Computerized Adaptive Testing (CAT) has increased in the last few decades, due in part to the increased use and availability of personal computers, but also partly due to the benefits of CATs. CATs provide increased measurement precision of ability estimates while decreasing the demand on examinees with shorter tests. This is accomplished by tailoring the test to each examinee and selecting items that are not too difficult or too easy based on the examinees’ interim ability estimate and responses to previous items. These benefits come at the cost of the flexibility to move through the test as an examinee would with a Paper and Pencil (P & P) test. The algorithms used in CATs for item selection and ability estimation require restrictions to response review and revision; however, a large portion of examinees desire options for review and revision of responses (Vispoel, Clough, Bleiler, Hendrickson, and Ihrig, 2002). Previous research has examined response review and revision in CATs with limited review and revision options and are limited to after all items had been administered. The development of the Item Pocket (IP) method (Han, 2013) has allowed for response review and revision during the test, relaxing the restrictions, while maintaining an acceptable level of measurement precision. This is achieved by creating an item pocket in which items are placed, which are excluded from use in the interim ability estimation and the item selection procedures. The initial simulation study was conducted by Han (2013) who investigated the use of the IP method using a dichotomously-scored fixed length test. The findings indicated that the IP method does not substantially decrease measurement precision and bias in the ability estimates were within acceptable ranges for operational tests. This simulation study extended the IP method to a CAT using polytomously-scored items using the Generalized Partial Credit model with exposure control and content balancing. The IP method was implemented in tests with three IP sizes (2, 3, and 4), two termination criteria (fixed and variable), two test lengths (15 and 20), and two item completion conditions (forced to answer and ignored) for items remaining in the IP at the end of the test. Additionally, four traditional CAT conditions, without implementing the IP method, were included in the design. Results found that the longer, 20 item IP method conditions using the forced answer method had higher measurement precision, with higher mean correlations between known and estimated theta, lower mean bias and RMSE, and measurement precision increased as IP size increased. The two item completion conditions (forced to answer and ignored) resulted in similar measurement precision. The variable length IP conditions resulted in comparable measurement precision as the corresponding fixed length IP conditions. The implications of the findings and the limitations with suggestions for future research are also discussed.Educational Psycholog

ANALISIS PERUBAHAN KEMIRINGAN SUDUT ANTENA TERHADAP UNJUK KERJA PERANGKAT NANOSTATION2 LOCO (NS2L) PADA OUTDOOR HOTSPOT SYSTEM

Inclination is the angle formed by tilt angle to vertical line. This research determine the effect of tilt angle to the performance of the device, changes the quality, affordability and stability of connections. In addition, this research also presented the comparative performance of the device after tilt angle changed  and  find  the optimal angle. This research, explained  the change in  angle of inclination generally affected the main lobe and back lobe in the antenna’s beam of NanoStation2 Loco. Inclination angle also causes the signal strength and connection stability affected, especially on devices at distance over 100 m from the antenna. This research made changes three times to the antenna’s tilt. There are 10 °, 20 ° and 30 °. From the angle change, the result indicates that the most effective use of research sites of the Faculty of Engineering, University Tanjungpura Pontianak is tilted at angle of 20°. This is proved by results of measuring Received Signal Strength Indicator and Packet Loss that be the main indicator to determine the quality of the antenna. From the data showed the measurement of signal strength under -90 dBm at distance over 100 m will lead the connection and stability to be poor connection. This situation is shown by the high number percentage of packet loss that occurs during pingtest. At the point of measurement locations under 100 m and minimum obstacle, change angles do not have a big impact and quality of the antenna is in excellent. In addition to the distance from the antenna, the obstacle factors (barriers of the building) is also a big influence on the quality of the antenna

INVESTIGATION OF THE THERMAL COMFORT AND PRODUCTIVITY IN JAPANESE MIXED-MODE OFFICE BUILDINGS

This study investigates the overall comfort and productivity of Japanese office workers in mixed-mode office buildings. The indoor thermal environment is adjusted using the air-conditioning in Japanese office buildings to maintain thermal comfort and productivity. Thus, it is necessary to research thermal comfort and productivity to understand how occupants prepare themselves to be at a comfortable temperature and perform their daily tasks under mixed-mode (MM) and free-running (FR) modes. Environmental parameters such as air temperature, relative humidity, and so on were measured in 17 Japanese office buildings with the help of digital instruments, and thermal comfort transverse surveys were conducted for two years in Tokyo, Yokohama, and Odawara of Japan. The data were collected every once a month for a day visiting each building with the measurement instruments, together with the questionnaires. Almost 3000 votes were collected. This paper evaluates the overall comfort discussions followed by how the occupant could achieve their productivity. The occupants were found to be thermally comfortable and productive in the office. The most suitable comfortable temperature range for MM mode was found to be 22–26 °C and 23–25 °C for FR mode. The workers' productivity range is defined by the globe temperature range of 21–27 °C for MM and 20–27 °C for FR mode. The findings should be useful to suggest that whenever new office buildings are designed, these factors always need to be taken into consideration

2 D Modelling of Overpressure in the West Baram Delta, Sarawak

This project is entitled 2D modeling of overpressure in the West Baram Delta, Sarawak, and the focus is on the basin study, reservoir fluid pressure, petroleum system and geophysical method. The main objective for this project is to reconstruct overpressure history in West Baram Delta area, with the aid of basin modelling. The study carried out in two phases. In the first phase, model reconstruction was based on disequilibrium compaction as the overpressuring mechanism. In the second phase, additional contribution to the development of overpressure from hydrocarbon generation was investigated. The methodology employed in this study include: seismic time to depth conversion, I D modelling, pore pressure estimation and 2D Basin modelling. Based on seismic interpretation, the tectonics in the Baram Delta is shown very active as where many growth faults can be seen. This high tectonism in Baram Delta leads to shale diapirism. From I D modelling the modeled basal heat flow range from 25 m W /m2 to 53 m W /m2 The comparison of top overpressure suggest that in Well H is shallower, located at the depth of 1000 m, while the top of overpressure in Well 0 is at 1800 m. The 2D models have been calibrated with the observed pressure, temperature and vitrinite reflectance datasets. The calibrated heat flow for the 2D modelling ranges from 35mW/m2 to 53mW/m2 . From the modeled overpressure in 2D basin modelling, the onset of overpressure is estimated to occur at 3050 m. In Well P, the top of overpressure was occurs at 3048 m, in Well A4 the depth occurs at 3100 m, Well 0 at 2987 m and Well Hat 2682 m. In the first model of2D basin modeling, the disequilibrium compaction indicates that overpressure starts approximately at 3050 m. In the second model, which includes the hydrocarbon generation, the depth of overpressure does not seem to vary much from the first model. It is therefore concluded that the main origin of overpressure in the West Baram Delta is disequilibrium compaction. Hydrocarbon generation does not contribute significantly to the development of overpressure in the Baram Delta