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.
Keyword: 

Judul: Hubungan Gaya Kepemimpinan Dengan Kinerja Pegawai Pemerintah (Kasus Suku Dinas Peternakan, Perikanan, dan Kelautan Kota Administrasi Jakarta Utara)
Abstrak: The purpose of this research was to study about the relationship between leadership and the performance of government employees in some offices of livestock, fishery, and marine resources in North Jakarta. This study used a quantitative approach by using a census method and was supported by qualitative data. An individual respondent was a civil servant who had been working there. It focused on three points of analysis. They were a leadership type owned or used by a leader, the employees performance, and the relation among them. Based on the result of study, a dominant leadership type used was participatory. Furthermore, a leader also used consultive and delegative leadership type. They used several leadership types in various conditions and in accordance with the character of employees. It indicated that most employees had a good performance. There was a close relation between factor of leadership type anad employees performance. At last, it could be concluded that a leadership type used by a leader would improve the employees performance.
Keyword: 

Judul: Transformation of jatropha seeds (Jatropha curcas L.)  into biodiesel by in situ transesterification
Abstrak: Biodiesel is defined as mono-alkyl esters from transesterification reaction of triglycerides with alkyl alcohol. In situ transesterification is a method to produce biodiesel from oil sources of material by eliminating process steps of oil extraction and refining. The purpose of this research is to study the transformation process of Jatropha seeds into biodiesel by in situ transesterification on the 10 liters scale by studying the influence of reaction time, stirring speed and ratio methanol/hexane/material on the yield and quality of biodiesel. In situ transesterification of Jatropha seeds was carried out under the following process condition: the moisture content of Jatropha seeds were less than 2%, the particles size were ± 20 mesh and KOH concentration was 0.075 mol/L methanol. Operating condition of in situ transesterification was varied at 4 and 6 hours reaction time, 200 and 600 rpm stirring speed and ratio methanol/hexane/material (v/v/w) were 3:3:1, 4:2:1 and 5:1:1. Analysis of variance showed that reaction time, stirring speed and ratio methanol/hexane/material did not significantly affected the yield, acid value, saponification value, ester value, viscosity and ash content of biodiesel. The biodiesel yield was produced between 82.54-87.57%. The best biodiesel yield on all of treatments was 87.57% with condition treatment were reaction time of 6 hours, stirring speed 600 rpm and ratio methanol/hexane/material (v/v/w) of 4:2:1. Acid value, saponification value and ester value of biodiesel were 0.20-0.26 mg KOH/g, 185.49-194.30 mg KOH/g and 185.29-194.10 mg KOH/g respectively. Viscosity of biodiesel was 3.49-6.36 cSt. The ash content of biodiesel was 0%, but the condition treatment, were reaction time of 4 hours, stirring speed of 600 rpm and ratio methanol/hexane/material (v/v/w) of 5:1:1, had ash content of 0.007%. Jatropha cakes had total volatile matter content 1.80-3.64% and extracted material content 3.94-11.42%.
Keyword: