Judul: Peran Gaya Kepemimpinan dan Budaya Organisasi terhadap Kinerja Aparatur Pemerintah Kabupaten Padang Lawas Utara
Abstrak: Human resources of organization is a vital asset because of its role in the implementation of the strategy is very important, which is the subject of implementing organizational strategy. They have potential as ideas, thoughts, experties, feelings, desires, educational background, age, sex and various other things that heterogeneous, which if their potentials brought into an organization can be utilized and optimized in carrying out the work to achieve organizational goals. One of the things that must be considered in the implementation of the work, namely the achievement of good performance, accordance with the applicable performance standards and desired by the organization, and in accordance with the vision and mission of the organization. However, that all the civil servants can achieved the desired performance, many factors that can influence it,such as leadership styles, organizational culture, compensation, motivation, work climate, organizational commitment, and so forth. This study will only discuss about leadership styles and organizational cultural factors that may effect the performance of the civil servants. The appropriate leadership style to the situation and condition of the organization, civil servants will be more excited in performing their duties and obligations as well as having their needs fulfilled expectations. Good and condusive organizational culture to an organization can aslo affect the civil servants in their activities as well as directly affecting their performance. This research was done at Local Government of North Padang Lawas, North Sumatera. In this research, the subject was all local government civil servants of North Padang Lawas, North Sumatera. The technique of samples used was cluster purposive sampling so that the sample in this research was 38 clusters (SKPD) in which of every clusters were taken as the sample. Data analysis in this research used SEM method (Structural Equation Modeling) by using LISREL program. From the analysis result structural research models, it could be concluded that leadership styles influenced the performance positively and significantly. Organizational cultures influenced both the leadership styles and performance negatively also unsignificantly. It meant that the higher leadership style, the better performance would be and vise versa. However, the organizational cultures, will not give significant effect on both leadership style and performance.
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Judul: Pengaruh Gaya Kepemimpinan Terhadap Kinerja Pegawai Negeri Sipil (PNS) pada Pusat Pelatihan Manajemen dan Kepemimpinan Pertanian (PPMKP) Ciawi Bogor
Abstrak: Civil servants as officers of the state is required to have an excellence, skill, and professional skills to be able to perform government’s tasks and accountability well. To improve performance and create the work motivation, so the companies apply the fair and feasible leaderhip principle. Leadership style becomes the reason of the research implementation because of problems that occurred starting from the turn of the leader. This research aims to determine the leadership style applied by the leader to the civil servants by using descriptive analysis, determine the performance of civil servants by using descriptive analysis. Analyze the influence of leadership style to the performance of civil servants by using multiple linear regeresi analysis. This results show the respondents agree with the four styles of leadership that is authoritarian, participative, delegative, and situational. Employee fulfills the performance standards set out in the list of employee job execution (DP3). The Leadership style is not a positive influence to the employee performance.
Keyword: linear regeresi analysis, performance of civil servants, leadership style

Judul: Biodiesel production from palm oil in a bubble column reactor by non-catalytic process
Abstrak: Biodiesel has been defined as the monoalkyl esters of long-chain fatty acids derived from renewable feedstocks, such as vegetable oils and animal fats, for use in compression-ignition (diesel) engines. Biodiesel, consisting of fatty acid methyl esters (FAME) can be produced by transesterification of triglycerides (TG) and/or esterification of free fatty acids (FFA) in vegetable oils with short-chain alcohol, mainly methanol (MeOH). Alkaline-catalyzed transeseterification of TG in vegetable oils, with the addition of an acid-catalyzed reaction to esterify FFA are the technologies presently in use for industrial-scale biodiesel production. However, the desire to reduce or remove catalyst cost, waste output and to obtain the simpler process has stimulated the investigation of alternate methods of biodiesel synthesis.
Keyword: superheated methanol, methyl esterification of FFA, transesterification of TG, mass flow rate