Estimasi Lendutan Pelat Untuk Menghitung Kapasitas Beban Dengan Akurasi Tinggi Menggunakan Uji Getar

Asesmen kapasitas struktur bangunan eksisting dapat dilakukan dengan cara analitis, dimana mutu dan dimensi elemen struktur dapat diperoleh dari pengujian dan pengukuran. Uji beban statik disarankan untuk dilakukan dalam beberapa pedoman pemeriksaan bangunan eksisting, namun jarang dilakukan karena membutuhkan waktu persiapan dan pelaksanaan pengujian beberapa hari. Hal ini tentunya mengganggu operasional bangunan, selain masalah biaya dan resiko terhadap struktur itu sendiri. Alternatif yang cukup efektif adalah dengan uji getar, dari data percepatan menggunakan Fast Fourier Transformation, frekuensi struktur dapat diketahui. Lendutan dapat diestimasi dengan integrasi ganda data percepatan. Namun dalam banyak kasus mengubah data percepatan menjadi lendutan tidak selalu akurat karena ketidaktahuan kondisi awal dan noise yang tidak dapat dihindari dalam proses perekaman. Filtering data percepatan yang diterapkan pada satu kasus belum tentu cocok untuk kasus lainnya, karena proses koreksi memungkinkan menghilangkan/ merubah data. Pada penelitian ini mengusulkan penggunaan Highpass Equripple FIR pada data percepatan pada tiap tahap integrasi numerik dengan optimasi pada Panjang Filter. Interpolasi dilakukan dengan hermite kubik dan integrasi menggunakan metode Simpson 3/8. Dengan algoritma tersebut dihasilkan estimasi lendutan statik dari data percepatan 100.67% dari lendutan hasil uji statik dengan deviasi 1.86%.%. Kapasitas beban dapat diketahui dengan memasukkan lendutan ijin pada persamaan lendutan

A Soft Systems Methodology Application to Promote the Multidimensional Model of e-Government Project Management in Indonesia’s Construction Services

The Integrated Construction Services Information System (ICSIS) project is one of the Indonesian government's initiatives to meet public demand for better construction business services. Despite being in operation for approximately 6 (six) years, ICSIS performs poorly. Fragmented business processes, noninteroperable systems, and unaccountable data all demonstrate poor performance in this regard. With all the best efforts, ICSIS only reaches 12% of the total target users. This paper discusses a problem-structuring approach to problem analysis and comprehension, as well as the critical factors to consider through stakeholder interaction. From various perspectives, the results of this structuring phase using literature study, comparative analysis and soft systems methodology indicate that multidimensional factors must be considered in order to achieve the expected ICSIS values. This technique assists decision makers in developing a multidimensional model in ICSIS project management with the goal of fostering more dependable and long-term e-government in the construction services

A study on the relationship between work factors and employee satisfaction

Employee satisfaction enhances confidence, loyalty and consequently improved work quality, productivity and organizational performance. Various factors such as benefits and services provided for employees, health insurance, welfare, rewards as well as training can affect employee satisfaction. The quality level of services provided to employees can influence employee satisfaction. One of the benefits provided by the company in this study is housing loan. Nonetheless, many employees are not satisfied with the quality service provided. Many complaints were lodged with the company on the dissatisfaction. As such, this study was undertaken to investigate the relationship between employee satisfaction and quality service from the aspects of tangible, reliability and responsiveness. A questionnaire on service quality was utilised to examine the relationship between variables. 92 respondents participated in this study. Results showed that all there independent variables measuring service quality were positively and significantly related to employee satisfaction. Reliability of services provided was found to be the most critical towards employee satisfaction. As a conclusion, the company is strongly recommended to review relevant policies and procedures relating to quality of services provided to employees in order to increase employee satisfaction

State dependence and exchange rate regime choice: a new empirical explanation to the polarization phenomenon

This paper, using the dynamic multinomial choice random effect panel Logit model, and focusing on the intermediate exchange rate regimes, tries to provide new empirical explanations to the special polarization phenomenon. The main findings are as follows: Firstly, the state dependence can influence the choice of exchange rate regimes greatly, and the state dependence can explain the phenomenon of the special polarization. Secondly, the non-state dependence factors influence exchange rate regimes choice of different development stage economies in different manner. The non-state dependence factors can also explain the special polarization. Thirdly, the policy makers will choose the less-flexible exchange rate regimes with the increasing of capital account openness. The intermediate exchange rate regimes can survive and stabilize the economy under certain conditions. Lastly, this paper draws a series of important conclusions and policy implications

Personality traits, surface traits, organisational culture and performance outcomes of the call centre agents in the Klang Valley / Mohmad Najid Ramli

The main thrust of this present study is to identify the antecedents and underlying dimensions of performance outcomes of the call-centre agents in the Klang Valley. The data for the provision of the empirical evidence was drawn from the call centres of five participating banks namely, Maybank, CIMB, RHB, Bank Islam, and Public Bank. The two underlying dimensions of performance outcomes are customer service satisfaction and job performance. Additionally, the two antecedents of performance outcomes were basic personality traits and surface traits. The first antecedent is composed of two underlying dimensions namely customer orientation and adaptability whereas the second antecedent is made up of two underlying dimensions namely customer orientation and adaptability. The sampling design was quota sampling of which the gender composition was 60.0 per cent female and 40 per cent male. This present study strives towards explicating social phenomena by embracing the methodological principles of positivism within which explanation, evaluation, prediction and testing of theories which were hypothesised by earlier researchers. The five underpinning theories for the conceptual model are the resource-based theory, equity theory, social exchange theory, agency theory and organisational culture

Performance analysis of 802.11ac with frame aggregation using NS3

802.11ac is an interesting standard of IEEE bringing multiple advantages than its predecessor 802.11n. 802.11ac is faster and more scalable version of 802.11n offering the capabilities of wireless Gigabit Ethernet. 802.11ac will enable access points (AP) to support more STAs with a better experience for clients and more channel bonding increasing from a maximum of 40 MHz with 802.11n up to 80 or 160 MHz with 802.11ac standard. In this paper, we analyze and evaluate the 802.11ac performance using NS3 simulator (v3.26) relying on several features like channel bonding, modulation and coding schemes, guard interval and frame aggregation. Then, we present the effect of the variation of distance between STAs and AP on the network performance in term of throughput. Finally, we capture the most relevant simulations outcomes and we indicate some research challenges for the future work

Effets des diètes de remplacement du maïs sur les performances de croissance, le pH ruminal et les paramètres biochimiques sanguins chez les veaux de grains

L’objectif de cette étude a été d’évaluer l’effet du remplacement total ou partiel du maïs d’une ration alimentaire standard (MS) sur les performances de croissance, le pH ruminal et les paramètres biochimiques sanguins chez les veaux de grain de race Holstein. Quatre groupes de 80 veaux ont été répartisen32 parcs (10 veaux/parc) et ont été assignés au hasard à quatre rations alimentaires. Les rations alimentaires ont été: la ration standard qui est constituée de maïs et un supplément protéique à 43,6% de protéine brute (MS);une ration réduite de maïs, avec tourteau de canola et de drèche de distillerie de maïs avec soluble (MCD); une ration réduite de maïs, avec supplément protéique à 43,6% de protéine brute et de drèche de distillerie de maïs avec soluble (MSD); et finalement une ration d’orge roulé, de tourteau de canola et de drèche de distillerie de maïs avec soluble (OCD). Les rations alimentaires ont été formulées selon une phase de démarrage P1 (j0 à j54), une de croissance P2 (j55 à j85) et une de finition P3 (j86 à j96). Un groupe additionnel de 5 veaux contrôle (CT), a reçu une ration alimentaire non acidogène à base de fourrage et de concentré. Notons qu’avant le début des traitements alimentaires au j0, sauf CT, les veaux ont reçu une ration d’adaptation contenant du maïs et de l’orge (50-50) et un supplément protéique pendant 20j. Les gains moyens quotidiens (GMQ) ont été similaires aux périodes P1 (0j-j27, j28-j54) et P2 (j55-j85), mais à la période P3 (j86-j96), le GMQ de la ration OCD a été plus grand que ceux dans les autres rations (p0.83), mais plus grandes que celle du groupe de OCD (p 0.05), le pH sanguin (p > 0.001; non significatif après l’ajustement de Bonferroni :NSAB) et le trou anionique (p > 0.009; NSAB). La PCO2 des animaux du groupe MS a été plus grande que celle du groupe CT (p = 0.0003). Au j68, HCO3 - du groupe CT a été plus grande que celle du groupe MCD (p = 0.0008). Les traitements alimentaires n’ont pas d’effets sur la lipopolysaccharide binding protein (LBP) aux j0 et j68. Au j96, la LBP du groupe CT a été plus petite que celle du groupe MS et MCD (p=0.001). Les diètes n’ont pas d’effets significatifs sur les épithéliums et les lamina propria du rumen (p0>0.37), ainsi que sur les abcès du foie (p=0.80). Le remplacement total du maïs par l’orge roulé, la drêche de distillerie de maïs avec soluble et le tourteau de canola amélioré le GMQ en phase de finition, a amélioré le pH du rumen, le rapprochant du pH ruminal physiologique, n’a pas modifié les paramètres biochimiques sanguins qui ont été mesurés et a diminué le rendement carcasse moyen de 1,1%.The objective of the present study was to evaluate the impact of partial or total replacement of corn in standard diet (MS) on growth performances, ruminal pH, and blood biochemical parameters in grain-fed calves. Four groups of 80 calves housed in 32 pens (10 calves/pen), were randomly assigned to four diets consisting of standard diet with corn and protein supplement (MS); reduced corn, canola meal and dried distiller’s corn grain with soluble diet (MCD); reduced corn, protein supplement and dried distiller’s corn grain with soluble diet (MSD), and rolled barley, canola meal and dried distiller’s corn grain with soluble diet (BCD). All diets were fed for 96 days and formulated according to starting (d0 to d54), growing (d55 to d85) and finishing phases (d86 to d96). Additional group of five calves fed a non-acidogenic control diet (CT) containing 1.4 kg of concentrate and grass hay ad libitum. Dry matter intake (DMI) was depressed in MSD at d96, compared to MS and BCD (p0.83), and greater than that in BCD (p 0.05), blood pH (p > 0.001; not significant after Bonferroni adjustement NSBA), and AnGap (p>0.009; NSBA). Dietary treatments had no effects on LBP at d0 and d68. At d96, LBP in CT was smaller than that of MS and MCD (p=0.001). Diets had no significant effects on epithelium and lamina propria (p=0>0.37), and liver abscess (p=0.80). Partial replacement of corn by dried distiller’s corn grain with soluble and/or Canola meal allowed a similar level of growth performances, did not decrease duration of acidic ruminal pH, and did not affect blood biochemical parameters. Total replacement of corn by rolled barley, dried distiller’s corn grain with soluble, and canola meal decreased duration of ruminal pH below 5.6, improved ADG at the finishing phase and did not affect blood biochemical parameters but slightly reduced carcass yiel

TABU SEARCH FOR THE MULTI-MODE RESOURCE CONSTARINED PROJECT SCHEDULING PROBLEM WHITH RESOURCE FLEXIBILITY

International audienceThe scheduling problem under study may be viewed as an extension of the standard Multi-mode Resource-Constrained Project Scheduling Problem (MRCPSP) including Multi-Skilled Labor and will be called as MRCPSP-MS. This problem requires an integration of resource limitation, labor skills, and multiple possible execution modes for each task, and the objective is to minimize the overall project duration. This paper present a new tabu search (TS) algorithm using a powerful neighborhood function based on a flow graph representation in order to implement various search strategies. The search of the solution space is carried out via two types of moves. Furthermore, the TS algorithm is embedded in a decomposition based heuristic (DBH) which serve to reduce the solution space. The effectiveness of the new Tabu Search is demonstrated through extensive experimentation on different standard benchmark problem instances and proves that our results are competitive

An Efficient Simulation Model for Wireless LANs Applied to the IEEE 802.11 Standard

In this research report, we propose a simple simulation model for wireless LANs. In wireless LANs, contrary to LANs different transmission results can be observed by network nodes. This phenomenon is the result of radio propagation laws where the signal decay is by far more important than on cables. This leads to new and interesting modelization and simulation problems. In this article we propose a simple but general physical model to take into account radio propagation. We then apply this model to the study of the IEEE 802.11 standard. We show how IEEE 802.11 can be efficiently modeled and simulated. This allows us to offer a detailed study of the standard. We will give performance evaluations of the IEEE 802.11 DS standard with transmisson rate 1, 2, 5.5 or 11 Mbit/s which take into account the exact protocol overhead. We also study special behaviour as broadcast transmission, performance with hidden nodes, spatial reuse